CN114569197B - Liquid injection device for removing tissue - Google Patents
Liquid injection device for removing tissueInfo
- Publication number
- CN114569197B CN114569197B CN202210274250.9A CN202210274250A CN114569197B CN 114569197 B CN114569197 B CN 114569197B CN 202210274250 A CN202210274250 A CN 202210274250A CN 114569197 B CN114569197 B CN 114569197B
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- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61B—DIAGNOSIS; SURGERY; IDENTIFICATION
- A61B17/00—Surgical instruments, devices or methods
- A61B17/32—Surgical cutting instruments
- A61B17/3203—Fluid jet cutting instruments
-
- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61B—DIAGNOSIS; SURGERY; IDENTIFICATION
- A61B2217/00—General characteristics of surgical instruments
- A61B2217/002—Auxiliary appliance
- A61B2217/005—Auxiliary appliance with suction drainage system
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- Health & Medical Sciences (AREA)
- Life Sciences & Earth Sciences (AREA)
- Surgery (AREA)
- Heart & Thoracic Surgery (AREA)
- Engineering & Computer Science (AREA)
- Biomedical Technology (AREA)
- Nuclear Medicine, Radiotherapy & Molecular Imaging (AREA)
- Medical Informatics (AREA)
- Molecular Biology (AREA)
- Animal Behavior & Ethology (AREA)
- General Health & Medical Sciences (AREA)
- Public Health (AREA)
- Veterinary Medicine (AREA)
- Surgical Instruments (AREA)
Abstract
本发明公开了一种用于切除组织的液体喷射装置，包括压力管、回流管以及套管，压力管的第一端形成有喷射孔，压力管的第二端用于通入高压液体，喷射孔被配置为当高压液体从喷射孔射出时形成液体射流；回流管套设于压力管上，压力管的第一端伸出于回流管的第一端外；喷射孔与回流管的第一端的开口相向对置，回流管的第一端的开口被配置为接收液体射流；喷射孔与回流管的第一端的开口相对间隔以形成有切割口；套管套设于回流管的第一端上，且套管能够沿回流管的轴向滑动以使套管的第一端突出于回流管的第一端的外部以遮盖切割口的至少一部分。通过套管的滑动来改变切割口的大小，改变切割面积形成不同的切割力，满足不同组织的切割需求。
The present invention discloses a liquid injection device for tissue excision, comprising a pressure tube, a return tube, and a sleeve. The first end of the pressure tube is formed with a spray hole, the second end of the pressure tube is used to pass high-pressure liquid, and the spray hole is configured to form a liquid jet when the high-pressure liquid is ejected from the spray hole; the return tube is sleeved on the pressure tube, and the first end of the pressure tube extends outside the first end of the return tube; the spray hole and the opening of the first end of the return tube are opposite to each other, and the opening of the first end of the return tube is configured to receive the liquid jet; the spray hole and the opening of the first end of the return tube are relatively spaced to form a cutting opening; the sleeve is sleeved on the first end of the return tube, and the sleeve can slide along the axial direction of the return tube so that the first end of the sleeve protrudes outside the first end of the return tube to cover at least a portion of the cutting opening. The sliding of the sleeve can change the size of the cutting opening, change the cutting area, and form different cutting forces to meet the cutting requirements of different tissues.
Description
Technical Field
The invention relates to the technical field of medical appliances, in particular to a liquid jet device for resecting tissues.
Background
Currently, surgical removal of tissue typically requires an operator to manually remove the severed tissue using forceps, or to apply an external vacuum source (e.g., via a vent) to the surgical site in order to remove the severed tissue. However, the forceps or external vacuum source described above (e.g., via a vent tube) remove tissue and the tissue removal process are independent of each other, and it is difficult to completely remove the excised tissue from the surgical site, and there is a risk of post-operative contamination.
In the prior art, the apparatus which adopts liquid jet partially is applied to cut or ablate tissues, which has the advantages of avoiding the surrounding tissues from being damaged by heat (caused by laser equipment or electrosurgical instruments, for example), and simultaneously discharging the tissues along the liquid flow after the tissues are cut off. For example, a distal selectively controllable shape fluid jet surgical instrument is disclosed in CN101394877B, wherein pressurized fluid is passed through a pressure tube to form a fluid jet from a nozzle, the tissue is cut by the suction of the high velocity fluid jet, and the cut tissue is expelled as the fluid flows into an evacuation tube. However, the suction portion of the liquid jet surgical instrument is fixed and unchangeable, so that the suction force is fixed and unchanged, and if the suction force is changed by adjusting the pressure of the pressurized liquid due to the difference of the cutting forces of different tissues on the surgical portion, the cleaning or clearing effect of the liquid jet is easily affected, and the risk of incomplete tissue clearing exists.
Disclosure of Invention
The invention aims to provide a liquid jet device for cutting tissues, which can change the suction force of a suction part under the condition of ensuring that the pressure and the flow speed of liquid jet flow are unchanged so as to meet the cutting requirements of different tissues, and can reasonably remove or clear the tissues so as to achieve the aims of effectively cutting and clearing the tissues.
In order to achieve the above object, a first aspect of the present invention provides a liquid ejection device for resecting tissue, comprising:
A pressure tube having a first end formed with an injection orifice and a second end for passing a high pressure liquid, the injection orifice configured to form a liquid jet when the high pressure liquid is injected from the injection orifice;
A return tube disposed in the pressure tube with a first end extending beyond the first end of the return tube, the jet orifice being opposite an opening of the first end of the return tube configured to receive the jet of liquid, the jet orifice being spaced opposite the opening of the first end of the return tube to form a cutting orifice, and
The sleeve is sleeved on the first end of the return pipe, and the sleeve can slide along the axial direction of the return pipe so that the first end of the sleeve protrudes out of the first end of the return pipe to cover at least one part of the cutting opening.
In some embodiments, the jet orifice is spaced from the opening of the first end of the cannula by a distance of 0-200mm.
In some embodiments, the injection orifice is open at an end of the first end of the pressure tube that is bent such that the end of the first end of the pressure tube is open to the first end of the return tube.
In some embodiments, the end of the first end of the pressure tube is provided with a depth of cut plateau extending axially outward of the return tube.
In some embodiments, the return tube is bent upward at a location near the second end of the sleeve to form a bend, the bend having an angle with the horizontal in the range of 0-90 °.
In some embodiments, the pressure tube further comprises a second end connected to the second end of the return tube, and a second end connected to the second end of the return tube.
In some embodiments, the mount is vented.
Further, in order to achieve the above object, a second aspect of the present invention provides a liquid ejection device for resecting tissue, comprising:
A pressure tube having a first end formed with an injection orifice and a second end for passing a high pressure liquid, the injection orifice configured to form a liquid jet when the high pressure liquid is injected from the injection orifice;
A return tube disposed in the pressure tube with a first end extending beyond the first end of the return tube, the jet orifice being opposite an opening of the first end of the return tube configured to receive the jet of liquid, the jet orifice being spaced opposite the opening of the first end of the return tube to form a cutting orifice, and
The sleeve is sleeved on the first end of the return pipe, at least one first through hole is formed in the side wall of the sleeve, at least one second through hole is formed in the side wall of the return pipe, and the sleeve can rotate along the axis of the return pipe so that at least one first through hole and at least one second through hole are mutually communicated.
In some embodiments, the return tube is bent upward at a location near the second end of the sleeve to form a bend, the bend having an angle with the horizontal in the range of 0-90 °.
In some embodiments, the pressure tube further comprises a second end connected to the second end of the return tube, and a second end connected to the second end of the return tube.
Compared with the prior art, the liquid injection device for resecting tissues has the beneficial effects that:
The first end of the pressure pipe extends out of the first end of the return pipe, so that the jet hole on the pressure pipe is opposite to the opening of the first end of the return pipe, high-speed liquid jet flow is formed when high-pressure liquid is ejected from the jet hole, suction force which is negative pressure is formed at the position of the cutting opening, tissue can be sucked to form cutting force, the cut tissue can be cut, the cut tissue flows into the opening of the first end of the return pipe along the liquid jet flow with kinetic energy and then is discharged along the return pipe, the effect of removing the cut tissue is achieved, and meanwhile, the high-speed liquid jet flow cleans the surgical parts to improve the removal integrity of the cut tissue. The sleeve is sleeved outside the first end of the return pipe, the sleeve can slide along the axial direction of the return pipe to change the size of the cutting opening, the cutting area of the tissue is changed to adjust the negative pressure value of the suction force (or the sleeve rotates along the axis of the return pipe to enable the first through hole to be communicated with the second through hole and change the negative pressure value of the cutting opening), so that different cutting forces are formed to meet the cutting requirements of different tissues, excessive blood loss of the tissues is avoided, the cleaning or clearing effect of the tissues is not influenced, and the tissue is reasonably cut and cleared.
Drawings
FIG. 1 is a schematic view showing a structure of a liquid ejecting apparatus according to embodiment 1 of the present invention;
FIG. 2 is a schematic view showing another structure of a liquid ejecting apparatus according to embodiment 1 of the present invention, in which a return pipe is provided with a bending portion;
FIG. 3 is a view showing the state of use of the liquid ejecting apparatus according to embodiment 1 of the present invention;
FIG. 4 is a schematic view showing a structure of a liquid ejecting apparatus according to embodiment 2 of the present invention, in which a return pipe is provided with a bending portion;
In the figure, 1, a pressure pipe, 11, an injection hole, 12, a cutting depth platform, 2, a return pipe, 21, a bending part, 22, a second through hole, 3, a sleeve, 31, a first through hole, 4, a fixing piece, 41, a vent hole, 42, a third through hole, 10, a cutting opening, 20, high-pressure liquid and 30, and tissues.
Detailed Description
The following describes in further detail the embodiments of the present invention with reference to the drawings and examples. The following examples are illustrative of the invention and are not intended to limit the scope of the invention.
In the description of the present invention, it should be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", etc. indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings are merely for convenience in describing the present invention and simplifying the description, and do not indicate or imply that the devices or elements referred to must have a specific orientation, be configured and operated in a specific orientation, and thus should not be construed as limiting the present invention.
Furthermore, 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 implicitly indicating the 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 "above" or "below" a second feature may include both the first and second features being in direct contact, as well as the first and second features not being in direct contact but being in contact with each other through additional features therebetween. Moreover, a first feature being "above," "over" and "on" a second feature includes the first feature being directly above and obliquely above the second feature, or simply indicating that the first feature is higher in level than the second feature. The first feature being "under", "below" and "beneath" the second feature includes the first feature being directly under and obliquely below the second feature, or simply means that the first feature is less level than the second feature.
Example 1
Referring to fig. 1-3, embodiment 1 of the present invention provides a liquid injection device for resecting tissue, comprising a pressure tube 1, a return tube 2 and a sleeve 3, wherein the interior of the pressure tube 1 is hollow, the first end of the pressure tube is closed, the second end of the pressure tube is used for connecting a high-pressure pipeline, the return tube 2 and the sleeve 3 are hollow, and two ends of the return tube 2 and the sleeve 3 are provided with openings. The first end of the pressure tube 1 is formed with an injection hole 11, the second end of the pressure tube 1 is used for introducing high-pressure liquid 20, for example, physiological saline or other physiological compatible liquid, which is introduced into the pressure tube 1 after forming the high-pressure liquid 20 under the action of a pressurizing pump and a hose, and the injection hole 11 is configured to form a liquid jet when the high-pressure liquid 20 is injected from the injection hole 11, wherein the liquid jet has a high flow velocity and a negative pressure capable of forming aspiration tissues. The return tube 2 is sleeved on the pressure tube 1, the first end of the pressure tube 1 extends out of the first end of the return tube 2, the jet hole 11 is opposite to the opening of the first end of the return tube 2, the opening of the first end of the return tube 2 is configured to receive a liquid jet, the high-speed liquid jet sucks and cuts tissue 30 and flows into the opening of the first end of the return tube 2 under the driving of residual kinetic energy and then is discharged along the return tube 2, the jet hole 11 is opposite to the opening of the first end of the return tube 2 at intervals to form a cutting opening 10, the high-speed liquid jet contacts the tissue 30 of a surgical site through the cutting opening 10 to suck and cut shallow tissue 30, the cut tissue 30 flows into the opening of the first end of the return tube 2 together with the liquid jet, and the cut tissue 30 is removed. The sleeve 3 is slidably sleeved on the first end of the return pipe 2, the sleeve 3 is driven to slide by external force so that the first end of the sleeve 3 protrudes out of the first end of the return pipe 2, the part of the sleeve 3 protruding out of the return pipe 2 covers the cutting opening 10, the size of the cutting opening 10 is changed to adjust the contact area between the liquid jet and the tissue 30, and therefore the negative pressure value of the liquid jet sucking the tissue 30 is adjusted.
It should be noted that the number of the injection holes 11 in embodiment 1 of the present invention may be one or more, and the shape of the injection holes 11 may be circular, square, trapezoid, etc., which is not limited herein, and is specifically designed adaptively according to the actual use situation.
Based on the above technical scheme, the size of the cutting opening 10 is changed through the sleeve 3 to change the cutting area of the tissue so as to adjust the negative pressure value of the suction force, thereby forming different cutting forces so as to meet the cutting requirements of different tissues, avoiding excessive blood loss of the tissue, and simultaneously not affecting the cleaning or clearing effect of the tissue, and cutting and clearing the tissue more reasonably.
In some embodiments, please refer to fig. 1-2, the negative pressure value of the tissue to the liquid jet is between 0-0.1Mpa, which is obtained according to experimental statistics, so that the distance L between the injection hole 11 and the opening of the first end of the sleeve 3 can be controlled to be 0-200mm, e.g. 1mm, 10mm, 20mm, 50mm, 80mm, 200mm, etc., by driving the sleeve 3 to slide on the return tube 2, so as to meet the negative pressure value requirements of different tissues.
In some embodiments, in order to face the injection hole 11 opposite to the opening of the first end of the return pipe 2, the injection hole 11 of example 1 of the present invention is opened at the end of the first end of the pressure pipe 1, and the first end of the pressure pipe 1 is bent so that the end of the first end of the pressure pipe 1 faces the opening of the first end of the return pipe 2. The injection holes 11 communicate with the interior of the pressure tube 1 such that the high pressure liquid 20 is injected from the injection holes 11 after flowing from the second end of the pressure tube 1 to the first end of the pressure tube 1, forming a liquid jet and flowing to the opening of the first end of the return tube 2.
In some embodiments, referring to fig. 1 and 3, the end of the first end of the pressure tube 1 is provided with a depth of cut land 12 extending axially outwardly of the return tube 2. The cutting depth platform 12 may be fixedly connected to the end of the first end of the pressure tube 1, and the cutting depth platform 12 is used for limiting the diffusion range of the liquid jet ejected from the ejection hole 11 so as to control the depth between the liquid jet and the cutting opening 10, and further adjust the cutting depth of the liquid jet on the tissue 30, so as to prevent damage to good deep tissues.
In some embodiments, referring to fig. 2, the return tube 2 is bent upward at a position near the second end of the sleeve 3 to form a bent portion 21, and an angle α between the bent portion 21 and the horizontal plane ranges from 0 ° to 90 °, for example, 1 °,5 °,10 °,45 °, 60 °, 75 °, and the like. Thus, the angle of the return pipe 2 is adjusted to change the return direction of the liquid jet, so that the flow speed of the liquid jet is changed, the negative pressure value of the liquid jet at the cutting opening 10 is changed, and different suction cutting forces are formed to meet the cutting requirements of different tissues. In general, the larger the included angle α, the slower the flow velocity of the liquid jet, and the smaller the suction cutting force formed, so as to avoid the risk of tissue trauma due to excessive suction cutting force.
In some embodiments, in order to fix the injection hole 11 opposite to the opening of the first end of the return tube 2, the liquid injection device of the embodiment 1 of the present invention further includes a fixing member 4, the fixing member 4 is hollow, the shape of the fixing member 4 is adapted to the shape of the pressure tube 1, the fixing member 4 is wrapped on the outer sidewall of the first end of the pressure tube 1, and one end of the fixing member 4 is connected to the first end of the return tube 2, so that the return tube 2, the pressure tube 1 and the fixing member 4 are fixed together, and the shape of the pressure tube 1 is prevented from being changed after collision with tissue, so as to ensure that the injection hole 11 opposite to the opening of the first end of the return tube 2 is opposite to each other. For example, the fixture 4 may be a spatula structure capable of cutting the surgical site first to expose the portion to be cut by aspiration of the liquid jet.
In some embodiments, the mount 4 is provided with a vent 41. Because the high-speed liquid jet forms a negative pressure vacuum environment in the fixing piece 4, in order to ensure that the fixing piece 4, the pressure pipe 1 and the return pipe 2 are not flattened and deformed by external atmospheric pressure, the fixing piece 4 is provided with a vent hole 41 communicated with the inside of the fixing piece, the vent hole 41 is used for communicating the inside of the fixing piece 4 with the outside, and external air enters the inside of the fixing piece 4 through the vent hole 41 under the action of air pressure difference so as to prevent the fixing piece 4, the pressure pipe 1 and the return pipe 2 from being pressed and deformed.
In some embodiments, in order to prevent the fixing element 4 from being separated from the pressure tube 1, the fixing element 4 is adhered to the outer side wall of the first end of the pressure tube 1, so that the fixing element 4 is formed into a whole with the pressure tube 1, thereby effectively protecting the pressure tube 1 and improving the overall structural strength.
In some embodiments, in order to prevent the pressure tube 1 from moving in position in the return tube 2 during operation of the liquid injection apparatus, the outer sidewall of the second end of the pressure tube 1 of example 1 of the present invention is adhered to the inner sidewall of the return tube 2, so that the pressure tube 1 and the return tube 2 form a whole, and the liquid injection apparatus is ensured to operate normally.
In some embodiments, the fluid jet device of the present invention further comprises a handle portion (not shown) remote from the first end of the return tube 2, and an operator drives the return tube 2 and the first end of the pressure tube 1 to the tissue site of the surgical operation by holding the handle portion by hand, so that the fluid jet device can smoothly perform suction cutting on the tissue.
In summary, embodiment 1 of the present invention provides a liquid jet device for resecting tissue, wherein a first end of a pressure tube 1 extends out of a first end of a return tube 2, so that an injection hole 11 on the pressure tube 1 is opposite to an opening of the first end of the return tube 2, high-speed liquid jet is formed when high-pressure liquid 20 is injected from the injection hole 11, suction force with negative pressure is formed at a position of a cutting opening 10 by the liquid jet, the tissue 30 can be sucked to form cutting force, the tissue 30 is cut, the cut tissue 30 flows into the opening of the first end of the return tube 2 along the liquid jet with kinetic energy, and then is discharged along the return tube 2, thereby achieving an effect of clearing the cut tissue 30, and meanwhile, the surgical site is cleaned by the high-speed liquid jet, so as to improve the clearing integrity of the cut tissue. The sleeve 3 is sleeved outside the first end of the return pipe 2, the sleeve 3 can slide along the axial direction of the return pipe 2 to change the size of the cutting opening 10, and the cutting area of the tissue 30 is changed to adjust the negative pressure value of the suction force, so that different cutting forces are formed to meet the cutting requirements of different tissues, excessive blood loss of the tissues is avoided, the cleaning or clearing effect of the tissues is not influenced, and the tissues are cut and cleared more reasonably.
Example 2
Referring to fig. 4, embodiment 2 of the present invention provides a liquid jet apparatus for resecting tissue, which is similar to the liquid jet apparatus of embodiment 1 described above, except that at least one first through hole 31 is formed in a side wall of the sleeve 3, at least one second through hole 22 is formed in a side wall of the return tube 2, and the sleeve 3 is further capable of rotating along an axis of the return tube 2 to communicate the at least one first through hole 31 with the at least one second through hole 22. So through rotating sleeve 3 in order to make a plurality of first through-hole 31 and a plurality of second through-hole 22 intercommunication, outside air gets into back flow 2 inside through first through-hole 31, second through-hole 22 in proper order, has changed the gas flow rate in the back flow 2 to adjust the negative pressure value of cutting mouth 10 under the cutting area condition of not changing cutting mouth 10, realize adjusting the negative pressure value of cutting mouth 10, thereby further satisfy the cutting demand of different tissues, improve the washing or the clear effect to the tissue.
Further, when the liquid spraying device of embodiment 2 of the present invention includes the fixing member 4, at least one third through hole 42 is formed on the side wall of the fixing member 4, and the first through hole 31, the third through hole 42 and the second through hole 22 are sequentially communicated by rotating the sleeve 3, so that the external air sequentially enters the return pipe 2 through the first through hole 31, the third through hole 42 and the second through hole 22, thereby changing the air flow speed in the return pipe 2, realizing the adjustment of the negative pressure value of the cutting opening 10, and meeting the cutting requirements of different tissues.
In addition, for other structures of the liquid ejecting apparatus of the present embodiment 2, please refer to the liquid ejecting apparatus of the above embodiment 1, and redundant descriptions thereof are omitted here.
In the description of the present specification, reference to the terms "one embodiment," "some embodiments," "illustrative embodiments," "examples," "specific examples," or "some examples," etc., means that a particular feature, structure, material, or characteristic described in connection with the embodiment or example is included in at least one embodiment or example of the invention. In this specification, schematic representations of the above terms do not necessarily refer to the same embodiments or examples. Furthermore, the particular features, structures, materials, or characteristics described may be combined in any suitable manner in any one or more embodiments or examples.
Although embodiments of the present invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made therein without departing from the spirit and scope of the invention as defined by the appended claims and their equivalents.
Claims (6)
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| Application Number | Priority Date | Filing Date | Title |
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| CN202210274250.9A CN114569197B (en) | 2022-03-18 | 2022-03-18 | Liquid injection device for removing tissue |
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| Application Number | Priority Date | Filing Date | Title |
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| CN202210274250.9A CN114569197B (en) | 2022-03-18 | 2022-03-18 | Liquid injection device for removing tissue |
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| CN114569197B true CN114569197B (en) | 2025-09-23 |
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| CN119454172A (en) * | 2023-08-11 | 2025-02-18 | 蓝帆外科器械有限公司 | Medical water jet instruments and medical water jet systems |
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