CN120392278B - A high-frequency electric knife with coagulation and cutting functions - Google Patents
A high-frequency electric knife with coagulation and cutting functionsInfo
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- CN120392278B CN120392278B CN202510897153.9A CN202510897153A CN120392278B CN 120392278 B CN120392278 B CN 120392278B CN 202510897153 A CN202510897153 A CN 202510897153A CN 120392278 B CN120392278 B CN 120392278B
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Abstract
本发明属于医疗器械技术领域，提供一种具有凝、切功能的高频电刀，绝缘鞘管的近端安装在手柄上，第一针状电极和电凝电极均呈管状，第二针状电极呈实心柱状，第一针状电极、第二针状电极和电凝电极同轴设置，电凝电极的近端插入绝缘鞘管的远端并与绝缘鞘管固定连接，电凝电极的远端伸出绝缘鞘管，第一针状电极插入电凝电极内并与电凝电极间隙配合，第二针状电极插入第一针状电极内并与第一针状电极间隙配合；可被驱动做沿远近方向直线运动的第一连接件的远端插入绝缘鞘管内与第一针状电极固定连接，可被驱动做沿远近方向直线运动的第二连接件的远端插入绝缘鞘管内与第二针状电极固定连接。高频电刀能够根据需求切换不同的电极。
The present invention belongs to the technical field of medical devices and provides a high-frequency electric knife with coagulation and cutting functions. The proximal end of an insulating sheath is mounted on a handle. A first needle electrode and a coagulation electrode are both tubular, and a second needle electrode is solid cylindrical. The first needle electrode, the second needle electrode, and the coagulation electrode are coaxially arranged. The proximal end of the coagulation electrode is inserted into and fixedly connected to the distal end of the insulating sheath, and the distal end of the coagulation electrode extends out of the insulating sheath. The first needle electrode is inserted into the coagulation electrode and fits in the gap between the coagulation electrodes. The second needle electrode is inserted into the first needle electrode and fits in the gap between the first needle electrode. The distal end of a first connector that can be driven to move linearly in a distal-proximal direction is inserted into the insulating sheath and fixedly connected to the first needle electrode. The distal end of a second connector that can be driven to move linearly in a distal-proximal direction is inserted into the insulating sheath and fixedly connected to the second needle electrode. The high-frequency electric knife can switch between different electrodes as needed.
Description
Technical Field
The invention relates to the technical field of medical appliances, in particular to a high-frequency electrotome with a coagulation and cutting function.
Background
The high frequency electric knife is an electric surgical instrument for cutting tissues instead of a mechanical surgical knife. The tissue is heated when the high-frequency high-voltage current generated by the tip of the effective electrode contacts with the body, so that the separation and solidification of the body tissue are realized, and the purposes of cutting and hemostasis are achieved. The high-frequency electric knife needs to be matched with a corresponding neutral polar plate in the use process, and when the high-frequency electric knife is used, the neutral polar plate is stuck to the rich muscle part of a patient, and the current gathered on the human body can be led back to the high-frequency electric knife and other instruments, so that a complete high-frequency loop is formed. Therefore, when the high-frequency operation is used, the current can be dispersed, the risk of current concentration is reduced, the current is safely collected and transmitted to the outside of a human body, and the safety of a patient is protected.
In the process of performing an operation on a tissue by a high-frequency electrotome, a dense connective tissue with a collagen content of >60% is generally treated by using a large-caliber needle electrode, such as fascia, scar, etc., and an elastic fiber dominant region, such as adventitia, nerve sheath, etc., is treated by using a small-caliber needle electrode. In complex operations, the large-caliber needle electrode and the small-caliber needle electrode are often used in a matched mode, the diameter of the large-caliber electrode is 1.5-2.5 mm, and the diameter of the small-caliber electrode is 0.3-0.8 mm. In addition, the needle-shaped electrode has higher bleeding rate in the use process, when bleeding, a special electric coagulation electrode needs to be quickly replaced, a flushing pump is used for flushing blood clots to expose bleeding points, and the electric coagulation electrode is used for carrying out spot coagulation hemostasis on the bleeding points. In the prior art, one electric knife is often fixedly provided with one electrode, so that a plurality of electric knives with different electrodes are needed to be matched for use in one operation, the number of the electric knives is large, the puncture outfit is frequently replaced by the instrument, the operation is complex, the operation time is prolonged, and the high operation cost is brought to a patient by the large number of the electric knives.
For this reason, it is highly desirable to provide a high-frequency electric knife capable of switching different electrodes.
Disclosure of Invention
First, the technical problem to be solved
In view of the problems with the above-described techniques, the present invention addresses, at least to some extent. The present invention provides a high-frequency electric knife with coagulation and cutting functions, which can switch different electrodes.
(II) technical scheme
In order to achieve the above purpose, the main technical scheme adopted by the invention comprises the following steps:
the invention provides a high-frequency electrotome with coagulation and cutting functions, which comprises an insulating sheath, a first needle electrode, a second needle electrode, an electrocoagulation electrode, a first connecting piece, a second connecting piece and a handle, wherein the proximal end of the insulating sheath is arranged on the handle, the first needle electrode and the electrocoagulation electrode are both tubular, the second needle electrode is in a solid column shape, the first needle electrode, the second needle electrode and the electrocoagulation electrode are coaxially arranged, the proximal end of the electrocoagulation electrode is inserted into the distal end of the insulating sheath and fixedly connected with the insulating sheath, the distal end of the electrocoagulation electrode extends out of the insulating sheath, the first needle electrode is inserted into the electrocoagulation electrode and is in clearance fit with the electrocoagulation electrode, the distal end of the second needle electrode is inserted into the first needle electrode and is in clearance fit with the first needle electrode, the proximal end of the first connecting piece is inserted into the insulating sheath and can be driven to linearly move along the far and near direction, the distal end of the second connecting piece is inserted into the insulating sheath and is in smooth and is in face of the first needle electrode and the far and near direction, and the distal end of the second needle electrode is in smooth transition and smooth and parallel with the distal end of the first needle electrode.
Optionally, the first connector is movable between an electrocoagulation position and an electrocoagulation position arranged in sequence from near to far, the first connector is positioned at the electrocoagulation position, the distal end of the first needle electrode extends out of the electrocoagulation electrode, and the second connector is movable between the electrocoagulation position and the electrocoagulation position arranged in sequence from near to far, the second connector is positioned at the electrocoagulation position, and the distal end of the second needle electrode extends out of the electrocoagulation electrode.
Optionally, the first connecting piece and the second connecting piece are both located at the electrocoagulation position, and the distal end face of the electrocoagulation electrode, the distal end face of the first needle electrode, and the distal end face of the second needle electrode are in a spherical cap shape.
Optionally, an adapter chamber is arranged in the handle, an inlet of the adapter chamber is communicated with a liquid outlet of the water pump, the first connecting piece is tubular and is communicated with the adapter chamber, the second connecting piece is positioned in a tube of the first connecting piece, the first connecting piece is always communicated with the adapter chamber in the moving process of the first connecting piece, the second connecting piece can move between a first water supply position, an electrocoagulation position and an electrotome position which are sequentially arranged from near to far, and when the first connecting piece is positioned at the electrocoagulation position and the second connecting piece is positioned at the first water supply position, the second needle electrode pulls out the first needle electrode and is positioned at the near side of the first needle electrode.
Optionally, the second connector is capable of moving between a first water supply position, a second water supply position, an electrocoagulation position and an electrotome position which are arranged in sequence from near to far, and when the first connector is positioned at the electrotome position and the second connector is positioned at the second water supply position, the second needle electrode pulls out the first needle electrode and is positioned at the near side of the first needle electrode.
Optionally, a support member is fixedly arranged in the pipe of the first connecting member, a first through hole is formed in the support member, the second connecting member penetrates through the first through hole and is in clearance fit with the first through hole, a channel for water flow to pass through is formed between the support member and the pipe wall of the first connecting member, or a second through hole for water flow to pass through is formed in the support member.
The high-frequency electric knife with the coagulation and cutting functions comprises a first connecting piece and a second connecting piece, wherein the first connecting piece is fixedly connected with the switching chamber, the second connecting piece penetrates through the switching chamber and is in sliding connection with the switching chamber, the first connecting piece is connected with the switching chamber or the first connecting piece, the second connecting piece is connected with a part, extending out of the switching chamber, of the second connecting piece, the first connecting piece is driven to move with the switching chamber by the first connecting piece, the second connecting piece is driven to move by the second connecting piece, and in the moving process of the switching chamber, the inlet of the switching chamber is always communicated with the liquid outlet of the water pump.
Optionally, the transfer chamber is provided with a sleeve part extending along the far and near direction, the sleeve part is arranged through the proximal end part of the handle shell, the second connecting piece is inserted into the sleeve part and extends out of the sleeve part towards the near, the part of the sleeve part extending out of the handle shell is provided with a first transmission piece, and the part of the second connecting piece extending out of the sleeve part is provided with a second transmission piece.
The high-frequency electric knife with the coagulation and cutting functions comprises a first connecting piece and a second connecting piece, wherein the first connecting piece is in sliding connection and communication with the transfer chamber, the second connecting piece penetrates through the transfer chamber and is in sliding connection with the transfer chamber, the first connecting piece is connected with the first connecting piece, the second connecting piece is connected with a part, extending out of the transfer chamber, of the second connecting piece, the first connecting piece is driven to move by the first connecting piece, the second connecting piece is driven to move by the second connecting piece, or the first connecting piece is in sliding connection and communication with the transfer chamber, the second connecting piece is fixedly connected with the transfer chamber, the first connecting piece is connected with the first connecting piece, the second connecting piece is connected with the transfer chamber, the first connecting piece is driven to move by the second connecting piece, and in the moving process of the transfer chamber, the inlet of the transfer chamber is always communicated with the liquid outlet of the water pump.
Optionally, the first connecting piece is made of metal, the proximal end of the first connecting piece is used for being electrically connected with a power supply, and/or the second connecting piece is made of metal, the proximal end of the second connecting piece is used for being electrically connected with the power supply, or the first connecting piece comprises a first supporting body and a first conductive wire embedded in the first supporting body, the first end of the first conductive wire is electrically connected with the first needle electrode, the second end of the first conductive wire is located at the proximal end of the first connecting piece and used for being electrically connected with the power supply, and/or the second connecting piece comprises a second supporting body and a second conductive wire embedded in the second supporting body, the first end of the second conductive wire is electrically connected with the second needle electrode, and the second end of the second conductive wire is located at the proximal end of the second connecting piece and used for being electrically connected with the power supply.
(III) beneficial effects
The beneficial effects of the invention are as follows:
The high-frequency electrotome with the coagulation and cutting functions can realize the switching of the coagulation electrode, the first needle-shaped electrode and the second needle-shaped electrode on one high-frequency electrotome, so that the high-frequency electrotome is respectively used for the coagulation working mode, the large-caliber electrode electrotome working mode and the small-caliber electrode electrotome working mode of the high-frequency electrotome, the use quantity of the electrotome in one operation is reduced, the operation time is shortened, and the cost pressure of a patient is reduced. In the high-frequency electric knife provided by the invention, the first needle electrode, the second needle electrode and the electric coagulation electrode are coaxially arranged, the second needle electrode is inserted into the first needle electrode, the first needle electrode is inserted into the electric coagulation electrode, the structure is more compact, the hollow on the distal end surface of the electric coagulation electrode is filled by utilizing the distal end surface of the first needle electrode and the distal end surface of the second needle electrode as electric coagulation contact surfaces, the electric coagulation contact surfaces with larger areas are designed, the electric coagulation effectiveness is improved, and the tubular first needle electrode provides a structural foundation for realizing the electric knife water spraying function subsequently.
Drawings
The invention is described with the aid of the following figures:
fig. 1 is a schematic structural view of a high-frequency electric knife according to embodiment 1;
fig. 2 is a schematic view of the distal end structure of a high-frequency electric knife in an electrocoagulation operation mode according to embodiment 1;
FIG. 3 is a schematic view of the distal end structure of a high-frequency electric knife in a large-caliber electrode cutting operation mode according to embodiment 1;
FIG. 4 is a schematic view showing the distal end structure of a high-frequency electric knife in a small-caliber electrode cutting operation mode according to embodiment 1;
FIG. 5 is a schematic cross-sectional view of a high frequency electrotome in an electrocoagulation mode of operation according to example 1;
FIG. 6 is an enlarged schematic view at A in FIG. 5;
FIG. 7 is an enlarged schematic view at B in FIG. 5;
fig. 8 is a schematic sectional view of a high-frequency electric knife in a water injection operation mode according to embodiment 1;
FIG. 9 is an enlarged schematic view at A in FIG. 8;
fig. 10 is an enlarged schematic view at B in fig. 8.
[ Reference numerals description ]
11, An insulating sheath, 12, 13, a second needle electrode, 14, an electrocoagulation electrode, 15, a first connector, 16, a second connector and 17, a ceramic sleeve;
The device comprises a transfer chamber 21, a water pump 22, a mounting chamber 23, a first sealing ring 24, a second sealing ring 25, a third sealing ring 26 and an infusion port 27;
211, a sleeve part;
3, a first transmission piece;
And 4, a second transmission piece.
Detailed Description
The invention will be better explained by the following detailed description of the embodiments with reference to the drawings. Wherein, reference herein to "proximal" refers to the side proximal to the operator and "distal" refers to the side proximal to the patient. References herein to "upper", "lower", "front", "rear", "left", "right", etc. are made to the orientation of fig. 1, wherein the near-to-far direction is also the rear-to-front direction.
Example 1
As shown in fig. 1 to 10, the present embodiment provides a high-frequency electric knife with coagulation and cutting functions. The high-frequency electric knife comprises a handle and a shaft assembly which are connected in sequence from near to far.
The shaft assembly comprises an insulating sheath 11, a first needle electrode 12, a second needle electrode 13, an electrocoagulation electrode 14, a first connector 15 and a second connector 16. The proximal end of the insulating sheath 11 is attached to the handle. The first needle electrode 12 and the electric coagulation electrode 14 are both tubular, the second needle electrode 13 is in a solid column shape, the first needle electrode 12, the second needle electrode 13 and the electric coagulation electrode 14 are coaxially arranged, the proximal end of the electric coagulation electrode 14 is inserted into the distal end of the insulating sheath 11 and fixedly connected with the insulating sheath 11, the distal end of the electric coagulation electrode 14 extends out of the insulating sheath 11, the first needle electrode 12 is inserted into the electric coagulation electrode 14, the first needle electrode 12 is in clearance fit with the electric coagulation electrode 14, the second needle electrode 13 is inserted into the first needle electrode 12, and the second needle electrode 13 is in clearance fit with the first needle electrode 12.
The distal end of the first connecting member 15 is inserted into the insulating sheath 11 and fixedly connected with the first needle electrode 12, the proximal end of the first connecting member 15 is inserted into the handle, the proximal end of the first connecting member 15 can be driven to linearly move in the distal-proximal direction, the distal end of the second connecting member 16 is inserted into the insulating sheath 11 and fixedly connected with the second needle electrode 13, the proximal end of the second connecting member 16 is inserted into the handle, and the proximal end of the second connecting member 16 can be driven to linearly move in the distal-proximal direction.
The first connector 15 is movable between an electrocoagulation position and an electrocoagulation position, which are arranged in sequence from near to far, and the second connector 16 is movable between an electrocoagulation position and an electrocoagulation position, which are arranged in sequence from near to far. When both the first connecting member 15 and the second connecting member 16 are positioned at the electrocoagulation position, the distal end face of the first needle electrode 12 is aligned with the distal end face of the electrocoagulation electrode 14 and smoothly transitions, and the distal end face of the second needle electrode 13 is aligned with the distal end face of the first needle electrode 12 and smoothly transitions. The first connecting member 15 is located at the electric cutting position, and the distal end of the first needle electrode 12 extends out of the electrocoagulation electrode 14 for performing the electric cutting operation of the large-caliber electrode by the high-frequency electric knife. The second connecting piece 16 is positioned at the electrotome position, and the distal end of the second needle-shaped electrode 13 extends out of the electrocoagulation electrode 14 for the high-frequency electrotome to perform the electrotome operation of the small-caliber electrode.
The high-frequency electric knife is arranged in the way that when the high-frequency electric knife is in an electric coagulation working mode, the first connecting piece 15 and the second connecting piece 16 are located at the electric coagulation position, the distal end face of the electric coagulation electrode 14, the distal end face of the first needle-shaped electrode 12 and the distal end face of the second needle-shaped electrode 13 form an electric coagulation contact face together, and can effectively coagulate bleeding points, when the high-frequency electric knife is in a large-caliber electrode electric coagulation working mode, the first connecting piece 15 is located at the electric coagulation position, the second connecting piece 16 is located at the electric coagulation position, the first needle-shaped electrode 12 extending out of the electric coagulation electrode 14 can perform electric coagulation operation on tissues, and when the high-frequency electric knife is in a small-caliber electrode electric coagulation working mode, the second connecting piece 16 is located at the electric coagulation position, and the second needle-shaped electrode 13 extending out of the electric coagulation electrode 14 can perform electric coagulation operation on tissues. Therefore, the high-frequency electrotome provided by the embodiment can realize the switching of the electrocoagulation electrode 14, the first needle electrode 12 and the second needle electrode 13 on one high-frequency electrotome, so that the high-frequency electrotome is respectively used for an electrocoagulation working mode, a large-caliber electrode electrotome working mode and a small-caliber electrode electrotome working mode of the high-frequency electrotome, the number of electrotomes used in one operation is reduced, the operation time is shortened, and meanwhile, the cost pressure of a patient is reduced. In addition, in the high-frequency electric knife provided by the embodiment, the first needle electrode 12, the second needle electrode 13 and the electric coagulation electrode 14 are coaxially arranged, the second needle electrode 13 is inserted into the first needle electrode 12, the first needle electrode 12 is inserted into the electric coagulation electrode 14, the structure is more compact, the cavity on the distal end face of the electric coagulation electrode 14 is filled by using the distal end face of the first needle electrode 12 and the distal end face of the second needle electrode 13 as electric coagulation contact faces, the electric coagulation contact faces with larger areas are designed, the electric coagulation effectiveness is improved, and the tubular first needle electrode 12 provides a structural basis for realizing the water spraying function of the electric knife subsequently.
Specifically, in the present embodiment, the electrocoagulation electrode 14 has an insertion portion and an electrocoagulation portion which are connected in this order from near to far, the insertion portion being inserted into the distal end of the insulating sheath 11, the electrocoagulation portion extending out of the insulating sheath 11, the insertion portion and the electrocoagulation portion being coaxially disposed, and a radial dimension of the electrocoagulation portion being larger than a radial dimension of the insertion portion. Thus, the distal end face of the electrocoagulation electrode 14 is advantageous in having a larger area, and the electrocoagulation efficiency is improved.
Preferably, the shaft assembly further comprises a ceramic sleeve 17, a proximal end of the ceramic sleeve 17 is inserted into a distal end of the insulating sheath 11 and fixedly connected with the insulating sheath 11, a distal end of the ceramic sleeve 17 extends out of the insulating sheath 11, and a proximal end of the electrocoagulation electrode 14 is inserted into the ceramic sleeve 17 and fixedly connected with the ceramic sleeve 17, and a distal end of the electrocoagulation electrode 14 extends out of the ceramic sleeve 17. Because the insulating sheath 11 is generally made of plastic, the melting point is low, and the ceramic sleeve 17 is arranged, so that the heat transfer from the electrode to the insulating sheath 11 is reduced by utilizing the poor heat conduction property of the ceramic sleeve 17, and the insulating sheath 11 is prevented from being deformed by heating.
Preferably, the first connecting piece 15 and the second connecting piece 16 are both located at the electrocoagulation position, and the distal end face of the electrocoagulation electrode 14, the distal end face of the first needle electrode 12 and the distal end face of the second needle electrode 13 are in a spherical crown shape. The electric coagulation contact surface in the spherical crown shape is more convenient for a user to operate the electric knife to curtail the hemostatic points. Further, in the present embodiment, the first connecting member 15 and the second connecting member 16 are both located at the electrocoagulation position, and the distal end face of the electrocoagulation electrode 14, the distal end face of the first needle electrode 12, and the distal end face of the second needle electrode 13 are hemispherical in common. Alternatively, the first connecting member 15 and the second connecting member 16 are both positioned at the electrocoagulation position, and the distal end face of the electrocoagulation electrode 14, the distal end face of the first needle electrode 12, and the distal end face of the second needle electrode 13 are in a plane or a tapered face in common.
Preferably, a switching chamber 21 is arranged in the handle, an inlet of the switching chamber 21 is communicated with a liquid outlet of the water pump 22, the first connecting piece 15 is in a tube shape, the first connecting piece 15 is communicated with the switching chamber 21, the second connecting piece 16 is positioned in the tube of the first connecting piece 15, a water flow channel is formed between the second connecting piece 16 and the first connecting piece 15, the first connecting piece 15 is always communicated with the switching chamber 21 in the moving process of the first connecting piece 15, the second connecting piece 16 can move between a first water supply position, an electrocoagulation position and an electrocutting position which are sequentially arranged from near to far, and when the first connecting piece 15 is positioned at the electrocoagulation position and the second connecting piece 16 is positioned at the first water supply position, the second needle electrode 13 pulls out the first needle electrode 12 and is positioned near to the first needle electrode 12. Thus, the second connecting piece 16 is located at the first water supply position, the first connecting piece 15 is located at the electrocoagulation position or the electrotome position, the second needle-shaped electrode 13 is pulled out of the first needle-shaped electrode 12 and located at the near side of the first needle-shaped electrode 12, and at the moment, the space in the tube of the first needle-shaped electrode 12 is exposed and communicated with the first connecting piece 15, so that the water injection function of the high-frequency electrotome is realized. The high-frequency electrotome has a water injection function, can spray water after electrically cutting tissues so as to wash away blood clots to expose bleeding points, and is convenient for the electrocoagulation electrode 14 to perform point coagulation hemostasis on the bleeding points.
Preferably, a support (not shown in the figure) is fixedly arranged in the pipe of the first connecting piece 15, a first through hole is formed in the support, the second connecting piece 16 penetrates through the first through hole and is in clearance fit with the first through hole, a channel for water flow to pass through is formed between the support and the pipe wall of the first connecting piece 15, or a second through hole for water flow to pass through is formed in the support. In this way, the support member is arranged in the pipe of the first connecting member 15, so that the first connecting member 15 can be guaranteed to normally pass water, and simultaneously, the second connecting member 16 can be supported and axially guided, on one hand, the position and the structural state of the second needle-shaped electrode 13 after being separated from the first needle-shaped electrode 12 are guaranteed to be stable, and on the other hand, the second needle-shaped electrode 13 can be smoothly reinserted into the first needle-shaped electrode 12. It is further preferred that a support member is provided in the tube of the first connecting member 15 at a position close to the first needle electrode 12. Specifically, in the present embodiment, the first through hole is located at the axis of the first connecting member 15.
Preferably, the high-frequency electric knife further comprises a first transmission piece 3 and a second transmission piece 4, wherein the first transmission piece 15 is fixedly connected with the switching chamber 21, the second connection piece 16 penetrates through the switching chamber 21 and is in sliding connection with the switching chamber 21, the first transmission piece 3 is connected with the switching chamber 21 or the first transmission piece 15, the second transmission piece 4 is connected with a part, extending out of the switching chamber 21, of the second connection piece 16, the first transmission piece 3 drives the first connection piece 15 and the switching chamber 21 to move, the second transmission piece 4 drives the second connection piece 16 to move, and in the moving process of the switching chamber 21, the inlet of the switching chamber 21 is always communicated with the liquid outlet of the water pump 22. Thus, the first link 15 can be linearly moved in the far and near directions, and the second link 16 can be linearly moved in the far and near directions.
Further preferably, in the present embodiment, the transfer chamber 21 has a sleeve portion 211 extending in the distal-proximal direction, the sleeve portion 211 is provided through the proximal end portion of the handle housing, the second coupling member 16 is inserted into the sleeve portion 211 and extends proximally beyond the sleeve portion 211, the first transmission member 3 is provided at a portion of the sleeve portion 211 extending beyond the handle housing, and the second transmission member 4 is provided at a portion of the second coupling member 16 extending beyond the sleeve portion 211. Thus, the user can conveniently act on the first transmission piece 3 and the second transmission piece 4 respectively to drive the first connecting piece 15 and the second connecting piece 16 to linearly move.
Specifically, in this embodiment, the mounting chamber 23 is fixedly disposed in the handle, the inlet of the mounting chamber 23 is communicated with the liquid outlet of the water pump 22 and is fixedly connected, the switching chamber 21 is slidably connected in the mounting chamber 23, the proximal end of the switching chamber 21 is sleeved with the first sealing ring 24, the proximal end of the switching chamber 21 is hermetically connected with the inner wall of the mounting chamber 23 through the first sealing ring 24, the distal end of the switching chamber 21 is sleeved with the second sealing ring 25, the distal end of the switching chamber 21 is hermetically connected with the inner wall of the mounting chamber 23 through the second sealing ring 25, and the side portion of the switching chamber 21 corresponding to the inlet of the mounting chamber 23 is provided with the inlet of the switching chamber 21 so as to be communicated with the inlet of the mounting chamber 23. In the process of moving the transfer chamber 21, the proximal end of the transfer chamber 21 is always in sealing connection with the inner wall of the installation chamber 23 through the first sealing ring 24, the distal end of the transfer chamber 21 is always in sealing connection with the inner wall of the installation chamber 23 through the second sealing ring 25, and the inlet of the transfer chamber 21 is always communicated with the inlet of the installation chamber 23.
Specifically, in this embodiment, the third sealing ring 26 is sleeved on the second connecting member 16, the second connecting member 16 is connected with the inner wall of the sleeve portion 211 in a sealing manner through the third sealing ring 26, and in the moving process of the second connecting member 16, the second connecting member 16 is always connected with the inner wall of the sleeve portion 211 in a sealing manner through the third sealing ring 26.
Specifically, in the present embodiment, the second connecting member 16 includes a first connecting portion and a second connecting portion which are connected in sequence from near to far, the first connecting portion and the second connecting portion are coaxially disposed, a radial dimension of the first connecting portion is larger than a radial dimension of the second connecting portion, the first connecting portion is disposed corresponding to the sleeve portion 211, the second transmitting member 4 is disposed at a portion of the first connecting portion extending out of the sleeve portion 211, and a proximal end of the second connecting portion is connected to the second needle electrode 13.
Preferably, the first connecting member 15 is made of metal, the proximal end of the first connecting member 15 is used for being electrically connected to a power supply, the second connecting member 16 is made of metal, and the proximal end of the second connecting member 16 is used for being electrically connected to the power supply. Thus, since the first needle electrode 12, the second needle electrode 13 and the electrocoagulation electrode 14 are coaxially arranged, and the second needle electrode 13 is inserted into the first needle electrode 12, the first needle electrode 12 is inserted into the electrocoagulation electrode 14, only the first connecting piece 15 and the second connecting piece 16 are required to be electrically connected with a power supply, and the electrocoagulation electrode 14 is not required to be electrically connected with the power supply, when the first connecting piece 15 and the second connecting piece 16 are both positioned at the electrocoagulation position, the first connecting piece 15 and the second connecting piece 16 are electrified, and tissue fluid can enter a gap between the first needle electrode 12 and the electrocoagulation electrode 14 as a conductive medium in the process of carrying out the electrocoagulation operation, so that the first needle electrode 12 conducts electricity to the electrocoagulation electrode 14.
Specifically, in the present embodiment, the second needle electrode 13 and the second connecting member 16 are made of tungsten metal. Tungsten has a high hardness so that the thinner second connecting member 16 can effectively perform force transmission to drive the second needle electrode 13 to move, while the thinner second connecting member 16 has a higher strength for electrocutting.
Optionally, the first connector 15 comprises a first support body and a first conductive wire embedded in the first support body, a first end of the first conductive wire is electrically connected to the first needle electrode 12, a second end of the first conductive wire is located at a proximal end of the first connector 15 for electrical connection to a power source, and the second connector 16 comprises a second support body and a second conductive wire embedded in the second support body, a first end of the second conductive wire is electrically connected to the second needle electrode 13, and a second end of the second conductive wire is located at a proximal end of the second connector 16 for electrical connection to the power source.
Specifically, in this embodiment, the handle is further provided with a water pump 22 therein, and the housing of the handle is provided with an infusion port 27 for communicating with the liquid storage device, the infusion port 27 communicating with the liquid inlet of the water pump 22. So, through placing the water pump 22 in the handle, the water pump 22 is not fragile, improves the use portability of high frequency electric knife to be used for reducing with high frequency electric knife complex external equipment, and then the occupation space of external equipment reduces.
Example 2
On the basis of embodiment 1, this embodiment provides a high-frequency electric knife with coagulation and cutting functions, in which the second connector is movable between a first water supply position, a second water supply position, an electrocoagulation position and an electrotome position which are arranged in this order from near to far, and when the first connector is located at the electrotome position and the second connector is located at the second water supply position, the second needle electrode pulls out the first needle electrode and is located at the near side of the first needle electrode.
Therefore, the second connecting piece is positioned at the second water supply position, the first connecting piece is positioned at the electric cutting position, the second needle-shaped electrode can be pulled out of the first needle-shaped electrode and positioned at the near side of the first needle-shaped electrode, at the moment, the space in the tube of the first needle-shaped electrode is exposed and communicated with the first connecting piece, the water injection function of the high-frequency electric knife is realized, and the water injection of the electric knife can be realized only by moving the second connecting piece for a short time as the second water supply position is positioned at the far side of the first water supply position.
The rest is the same as in embodiment 1 and will not be described here again.
Example 3
The main difference between this embodiment and embodiment 1 is that:
The first connecting piece is connected with the transfer chamber in a sliding manner and communicated with the transfer chamber, the second connecting piece penetrates through the transfer chamber and is connected with the transfer chamber in a sliding manner, the first transmission piece is connected with the first connecting piece, the second transmission piece is connected with the part, extending out of the transfer chamber, of the second connecting piece, the first transmission piece drives the first connecting piece to move, and the second transmission piece drives the second connecting piece to move. Therefore, the first connecting piece can also linearly move along the far and near directions, and the second connecting piece can linearly move along the far and near directions.
The sliding connection part of the first connecting piece and the switching chamber is sealed, and the sliding connection part of the second connecting piece and the switching chamber is sealed.
The rest is the same as in embodiment 1 and will not be described here again.
Example 4
The main difference between this embodiment and embodiment 1 is that:
The first connecting piece is connected with the transfer chamber in a sliding manner and communicated with the transfer chamber, the second connecting piece is fixedly connected with the transfer chamber, the first transmission piece is connected with the first connecting piece, the second transmission piece is connected with the transfer chamber, the first transmission piece drives the first connecting piece to move, the second transmission piece drives the transfer chamber and the second connecting piece to move, and the inlet of the transfer chamber is always communicated with the liquid outlet of the water pump in the moving process of the transfer chamber. Therefore, the first connecting piece can also linearly move along the far and near directions, and the second connecting piece can linearly move along the far and near directions.
Optionally, the second connecting piece penetrates through the switching chamber and is fixedly connected with the switching chamber, and the second transmission piece is connected with the switching chamber or a part of the second connecting piece extending out of the switching chamber.
The sliding connection between the first connecting piece and the transfer chamber is sealed.
The rest is the same as in embodiment 1 and will not be described here again.
In the description of the present invention, it should be understood that the terms "first," "second," and the like are used for descriptive purposes only and are not to be construed as indicating or implying a relative importance or number of technical features indicated. Thus, a feature defining "a first" or "a second" may explicitly or implicitly include one or more such feature. In the description of the present invention, the meaning of "a plurality" is two or more, unless explicitly defined otherwise.
In the present invention, unless explicitly specified and limited otherwise, the terms "mounted," "connected," "secured," and the like are to be construed broadly, and may be, for example, fixedly connected, detachably connected, or integrally formed, mechanically connected, electrically connected, directly connected, indirectly connected via an intervening medium, or in communication between two elements or in an interaction relationship between two elements. The specific meaning of the above terms in the present invention can be understood by those of ordinary skill in the art according to the specific circumstances.
In the present invention, unless expressly stated or limited otherwise, a first feature is "on" or "under" a second feature, which may be in direct contact with the first and second features, or in indirect contact with the first and second features via an intervening medium. Moreover, a first feature "above," "over" and "on" a second feature may be a first feature directly above or obliquely above the second feature, or simply indicate that the first feature is higher in level than the second feature. The first feature being "under", "below" and "beneath" the second feature may be the first feature being directly under or obliquely below the second feature, or simply indicating that the first feature is level lower than the second feature.
In the description of the present specification, the terms "one embodiment," "some embodiments," "examples," "particular examples," or "some examples," etc., refer to particular features, structures, materials, or characteristics described in connection with the embodiment or example as being included in at least one embodiment or example of the present invention. In this specification, schematic representations of the above terms are not necessarily directed to the same embodiment or example. Furthermore, the particular features, structures, materials, or characteristics described may be combined in any suitable manner in any one or more embodiments or examples. Furthermore, the different embodiments or examples described in this specification and the features of the different embodiments or examples may be combined and combined by those skilled in the art without contradiction.
While embodiments of the present invention have been shown and described above, it will be understood that the above embodiments are illustrative and not to be construed as limiting the invention, and that alterations, modifications, substitutions and variations may be made in the above embodiments by those skilled in the art within the scope of the invention.
Claims (9)
1. The high-frequency electrotome with the coagulation and cutting functions is characterized by comprising an insulating sheath tube (11), a first needle-shaped electrode (12), a second needle-shaped electrode (13), an electrocoagulation electrode (14), a first connecting piece (15), a second connecting piece (16) and a handle;
The proximal end of the insulating sheath tube (11) is arranged on the handle, the first needle-shaped electrode (12) and the electric coagulation electrode (14) are tubular, the second needle-shaped electrode (13) is in a solid column shape, the first needle-shaped electrode (12), the second needle-shaped electrode (13) and the electric coagulation electrode (14) are coaxially arranged, the proximal end of the electric coagulation electrode (14) is inserted into the distal end of the insulating sheath tube (11) and fixedly connected with the insulating sheath tube (11), the distal end of the electric coagulation electrode (14) extends out of the insulating sheath tube (11), the first needle-shaped electrode (12) is inserted into the electric coagulation electrode (14) and is in clearance fit with the electric coagulation electrode (14), and the second needle-shaped electrode (13) is inserted into the first needle-shaped electrode (12) and is in clearance fit with the first needle-shaped electrode (12);
The distal end of the first connecting piece (15) is inserted into the insulating sheath (11) and fixedly connected with the first needle-shaped electrode (12), the proximal end of the first connecting piece (15) is inserted into the handle and can be driven to linearly move along the far and near directions, the distal end of the second connecting piece (16) is inserted into the insulating sheath (11) and fixedly connected with the second needle-shaped electrode (13), and the proximal end of the second connecting piece (16) is inserted into the handle and can be driven to linearly move along the far and near directions;
The handle is internally provided with a switching chamber (21), an inlet of the switching chamber (21) is communicated with a liquid outlet of the water pump, the first connecting piece (15) is communicated with the switching chamber (21), the second connecting piece (16) is positioned in a pipe of the first connecting piece (15), and the first connecting piece (15) is always communicated with the switching chamber (21) in the moving process of the first connecting piece (15);
The second connecting piece (16) can move among a first water supply position, an electrocoagulation position and an electrotome position which are arranged in sequence from near to far, when the first connecting piece (15) is positioned at the electrocoagulation position and the second connecting piece (16) is positioned at the first water supply position, the second needle electrode (13) pulls out the first needle electrode (12) and is positioned at the near side of the first needle electrode (12).
2. The high-frequency electric knife with coagulation and cutting functions according to claim 1, characterized in that the first connecting piece (15) can move between an electric coagulation position and an electric cutting position which are arranged in sequence from near to far, the first connecting piece (15) is positioned at the electric cutting position, and the distal end of the first needle-shaped electrode (12) extends out of the electric coagulation electrode (14);
the second connecting piece (16) can move between an electrocoagulation position and an electrocoagulation position which are arranged in sequence from near to far, the second connecting piece (16) is positioned at the electrocoagulation position, and the distal end of the second needle-shaped electrode (13) extends out of the electrocoagulation electrode (14).
3. The high-frequency electric knife with coagulation and cutting functions according to claim 1, wherein the first connecting piece (15) and the second connecting piece (16) are both positioned at the coagulation position, and the distal end face of the coagulation electrode (14), the distal end face of the first needle-like electrode (12) and the distal end face of the second needle-like electrode (13) are in a spherical cap shape.
4. The high-frequency electric knife with coagulation and cutting functions according to claim 1, characterized in that the second connecting member (16) is movable between a first water supply position, a second water supply position, an electrocoagulation position and an electrocoagulation position which are arranged in sequence from near to far, the first connecting member (15) being located at the electrocoagulation position, and the second connecting member (16) being located at the second water supply position, the second needle electrode (13) being pulled out of the first needle electrode (12) and being located at the near side of the first needle electrode (12).
5. The high-frequency electric knife with coagulation and cutting functions according to claim 1, wherein a supporting piece is fixedly arranged in a tube of the first connecting piece (15), a first through hole is formed in the supporting piece, the second connecting piece (16) penetrates through the first through hole and is in clearance fit with the first through hole, a channel for water flow to pass through is formed between the supporting piece and the tube wall of the first connecting piece (15), or a second through hole for water flow to pass through is formed in the supporting piece.
6. The high-frequency electric knife with coagulation and cutting functions according to claim 1, further comprising a first transmission member (3) and a second transmission member (4);
First connecting piece (15) and transfer room (21) fixed connection, second connecting piece (16) run through transfer room (21) and with transfer room (21) sliding connection, first driving medium (3) are connected with transfer room (21) or first connecting piece (15), second driving medium (4) are connected with the position that transfer room (21) are stretched out to second connecting piece (16), first driving medium (3) drive first connecting piece (15) and transfer room (21) remove, second driving medium (4) drive second connecting piece (16) remove, the in-process that transfer room (21) removed, the import of transfer room (21) is all the time with the liquid outlet intercommunication of water pump.
7. The high-frequency electric knife with coagulation and cutting functions according to claim 6, wherein the switching chamber (21) has a sleeve portion (211) extending in the distal-proximal direction, the sleeve portion (211) being provided through the proximal end portion of the handle housing, the second connecting member (16) being inserted into the sleeve portion (211) and extending proximally beyond the sleeve portion (211);
the part of the sleeve part (211) extending out of the handle shell is provided with a first transmission piece (3), and the part of the second connecting piece (16) extending out of the sleeve part (211) is provided with a second transmission piece (4).
8. The high-frequency electric knife with coagulation and cutting functions according to claim 1, further comprising a first transmission member (3) and a second transmission member (4);
the first connecting piece (15) is connected and communicated with the transfer chamber (21) in a sliding way, the second connecting piece (16) penetrates through the transfer chamber (21) and is connected with the transfer chamber (21) in a sliding way, the first transmission piece (3) is connected with the first connecting piece (15), the second transmission piece (4) is connected with the part, extending out of the transfer chamber (21), of the second connecting piece (16), the first transmission piece (3) drives the first connecting piece (15) to move, the second transmission piece (4) drives the second connecting piece (16) to move, or
First connecting piece (15) and switching room (21) sliding connection and intercommunication, second connecting piece (16) and switching room (21) fixed connection, first driving medium (3) are connected with first connecting piece (15), second driving medium (4) are connected with switching room (21), first driving medium (3) drive first connecting piece (15) remove, second driving medium (4) drive switching room (21) and second connecting piece (16) remove, the in-process that switching room (21) removed, the import of switching room (21) is with the liquid outlet intercommunication of water pump all the time.
9. The high-frequency electric knife with coagulation and cutting functions according to claim 1, wherein the first connecting member (15) is made of metal, the proximal end of the first connecting member (15) is used for being electrically connected with a power supply, and/or the second connecting member (16) is made of metal, the proximal end of the second connecting member (16) is used for being electrically connected with the power supply, or
The first connecting piece (15) comprises a first supporting body and a first conductive wire buried in the first supporting body, a first end of the first conductive wire is electrically connected with the first needle-shaped electrode (12), a second end of the first conductive wire is located at a proximal end of the first connecting piece (15) and is used for being electrically connected with a power supply, and/or the second connecting piece (16) comprises a second supporting body and a second conductive wire buried in the second supporting body, a first end of the second conductive wire is electrically connected with the second needle-shaped electrode (13), and a second end of the second conductive wire is located at a proximal end of the second connecting piece (16) and is used for being electrically connected with the power supply.
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| CN202510897153.9A CN120392278B (en) | 2025-07-01 | 2025-07-01 | A high-frequency electric knife with coagulation and cutting functions |
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| CN202510897153.9A CN120392278B (en) | 2025-07-01 | 2025-07-01 | A high-frequency electric knife with coagulation and cutting functions |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN110507412A (en) * | 2019-09-30 | 2019-11-29 | 南京微创医学科技股份有限公司 | A multifunctional high frequency electric knife |
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| AT137802B (en) * | 1932-02-10 | 1934-06-11 | Wolf Gmbh Georg | Working electrode for electrosurgery. |
| DE4138116A1 (en) * | 1991-11-19 | 1993-06-03 | Delma Elektro Med App | MEDICAL HIGH-FREQUENCY COAGULATION CUTTER |
| US6758848B2 (en) * | 1998-03-03 | 2004-07-06 | Senorx, Inc. | Apparatus and method for accessing a body site |
| US7678107B2 (en) * | 2005-03-10 | 2010-03-16 | Boston Scientific Scimed, Inc. | Medical needles and electrodes with improved bending stiffness |
| US20160051320A1 (en) * | 2014-08-25 | 2016-02-25 | Hs West Investments, Llc | Electrosurgical instrument with selective control of electrode activity |
| CN208808644U (en) * | 2018-03-07 | 2019-05-03 | 南京微创医学科技股份有限公司 | It is a kind of can binary channels fluid injection bipolar high frequency electric knife |
| CN210931791U (en) * | 2019-09-30 | 2020-07-07 | 南微医学科技股份有限公司 | Multifunctional high-frequency electrotome |
| CN213430509U (en) * | 2020-07-08 | 2021-06-15 | 安瑞医疗器械(杭州)有限公司 | Multifunctional high-frequency cutter |
| CN113081245A (en) * | 2021-05-25 | 2021-07-09 | 诸暨市鹏天医疗器械有限公司 | Multifunctional incision knife |
| CN217853283U (en) * | 2022-02-25 | 2022-11-22 | 首都医科大学宣武医院 | A multi-mode plasma surgical electrode device |
| CN114886548B (en) * | 2022-04-13 | 2025-02-28 | 广州中达福瑞医疗科技有限公司 | A switchable surgical electrode |
| CN116616890B (en) * | 2023-05-16 | 2024-04-16 | 浙江舒友仪器设备股份有限公司 | Bipolar electric coagulation forceps for sucking liquid during operation |
| WO2025022188A1 (en) * | 2023-07-26 | 2025-01-30 | Swift Sync, Inc. | Transvenous intracardiac pacing catheter having improved leads |
| CN118648975A (en) * | 2024-08-22 | 2024-09-17 | 南昌大学第二附属医院 | A water-injection high-frequency electric knife |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN110507412A (en) * | 2019-09-30 | 2019-11-29 | 南京微创医学科技股份有限公司 | A multifunctional high frequency electric knife |
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