CN112754403B - An endoscope operating self-locking device and the endoscope - Google Patents

Abstract

The invention discloses an endoscope operation self-locking device and an endoscope, comprising: a casing, a locking button device and a bending angle device, the casing includes a first casing and a second casing; the lock The tight button device is sequentially composed of a locking button, a camshaft, an elastic member and a damping member axially superimposed and arranged in the first housing; the camshaft can perform radial rotation and axial rotation under the pressure of the locking button. Move; the angle bending device is sequentially composed of an angle angle knob, a drum wheel, and a circlip axially superimposed in sequence, and is placed in the second housing; the drum wheel is arranged on the angle angle knob through a circlip; the The camshaft can make the spring pressed to push the damping piece; the damping piece can make the angled knob self-lock or unlock. The endoscope operation self-locking device provided by the present invention has the self-locking function of the endoscope angle knob, which can keep the bending part of the tip of the endoscope aligned with the lesion position and keep it still, thus effectively overcoming the problems existing in the prior art .

Description

An endoscope operating self-locking device and the endoscope

technical field

The invention relates to the technical field of endoscopes, in particular to the corner self-locking technology in endoscopes.

Background technique

The endoscope consists of two main components, the operation part and the insertion part. Usually, the doctor holds the operation part with his left hand to control the bending direction of the insertion part, and holds the insertion part with his right hand to perform the endoscopic operation. Especially during surgical treatment, the doctor needs to remove the lesion. For biopsy or electric knife cutting, the doctor is required to press the angle knob with his left thumb so that the curved part of the tip of the endoscope is always aligned with the lesion, and hold the insertion part with his right hand to stabilize the lens to ensure that the high-frequency electric knife can cut the lesion accurately. The operation process requires the doctor’s left thumb to keep exerting force on the bending knob to stabilize the bending angle. Long-term operation will make the doctor feel tired.

In the invention patent of publication number CN111067469A, an endoscope operating part with a self-locking device is mentioned. The angled knob requires the doctor to loosen the right hand that was originally holding the insertion part, and immediately return to hold the insertion part after turning the self-locking device with the right hand. Such an operation is likely to cause the previously aligned target to be lost, and the device and structure are complicated , the cost is high.

Therefore, it is an urgent problem for those skilled in the art to provide an endoscope operation self-locking device that is easy to operate.

Contents of the invention

Aiming at the problems existing in the locking of the bending angle in the existing endoscope, a new solution is needed.

Therefore, the object of the present invention is to provide an endoscope operating self-locking device to overcome the problems existing in the prior art, and further provide an endoscope using the angled self-locking device on this basis.

In order to achieve the above object, the self-locking device for endoscope operation provided by the present invention includes: a housing, a locking button device and an angled device, the housing includes a first housing and a second housing; the locking The button device is sequentially composed of a locking button, a camshaft, an elastic member and a damping member axially superimposed and arranged in the first housing; the camshaft can perform radial rotation and axial rotation under the pressure of the locking button. Move; the angle bending device is successively composed of an angle angle knob, a drum wheel, and a retaining spring, which are sequentially stacked in an axial direction, and are arranged in the second housing; the drum wheel is arranged on the angle angle knob through a retaining spring; the The camshaft can make the spring pressed to push the damping piece; the damping piece can make the angled knob self-lock or unlock.

Further, the first casing is a cavity casing, and the first turning hole is provided on the cavity casing, and four linear grooves and eight first turning holes are evenly distributed in the first turning hole. Triangular teeth; the second casing is provided with a second turning hole.

Further, the locking button is a cylindrical shaft, one end of which is set on the bottom of the first turning hole, and eight limiting ribs are arranged on the peripheral surface of the other end, and the limiting ribs are connected with the first turning hole. The linear grooves in the holes are set in cooperation with each other.

Further, the camshaft is configured as a column, and four inclined teeth are evenly distributed on the outer peripheral surface of the camshaft.

Further, the elastic member may be composed of a columnar spring or a columnar rubber elastic body.

Further, the damping element may be composed of a columnar rubber piece or a columnar nylon sheet.

Further, the angled knob is provided with a cylindrical rotating shaft, the cross-sectional shape of the cylindrical rotating shaft end is square, and the cylindrical rotating shaft end is provided with a stepped groove.

Further, the drum is circular, and a square hole is provided in the center of the circular; a U-shaped groove is provided on the circular peripheral surface, and the number of steps is not limited to the circular peripheral surface.

In order to achieve the above object, the endoscope provided by the present invention includes an operation part and an insertion part, and the above-mentioned angle self-locking device is arranged in the operation part.

The endoscope operation self-locking device provided by the present invention has a simple structure and is easy to operate, and can operate the locking button and the angled knob simultaneously with one hand. While pressing the locking button with the index finger of the left hand, press the angled knob with the thumb to Stabilize the angle of the endoscope, without letting go of the right hand holding the insertion part to assist in operating the locking device, avoiding lens instability and loss of the target.

Description of drawings

The present invention will be further described below in conjunction with the accompanying drawings and specific embodiments.

Fig. 1 is a top view sectional structural schematic diagram of an endoscope operation self-locking device in Embodiment 1;

Fig. 2 is a schematic diagram of the exploded structure of the locking button device of the endoscope operating self-locking device in Embodiment 1;

Fig. 3 is a schematic diagram of the exploded structure of the angle device of the endoscope operation self-locking device in the first embodiment.

Fig. 4 is a schematic diagram of the operation of the endoscope operation self-locking device in the first embodiment;

Fig. 5 is the second schematic diagram of the operation of the endoscope operation self-locking device in the first embodiment;

Fig. 6 is a top view sectional structural schematic diagram of the endoscope operation self-locking device in the second embodiment;

Fig. 7 is a schematic diagram of the operation of the endoscope operation self-locking device in the second embodiment.

Meanings of symbols in the figure:

The first housing 1, the linear groove 101, the first triangular tooth 102, the first turning hole 103, the locking button 2, the limit rib 201, the second triangular tooth 202, the camshaft 3, the inclined tooth 301, the first step Type terminal 302, spring 4, damping plate fixing ring 5, second stepped terminal 501, damping plate 6, damping seat 601, a seat cover 602, drum 7, square hole 701, U-shaped groove 702, curved Angle knob 8, cylindrical rotating shaft 801, step groove 802, cylindrical rotating shaft end section 803, second housing 9, second turning hole 901, damping rubber ring 10, traction steel wire 11, circlip 12.

Detailed ways

In order to make the technical means, creative features, goals and effects achieved by the present invention easy to understand, the present invention will be further described below in conjunction with specific illustrations.

Embodiment one

The self-locking device for endoscope operation given in this example includes: a locking button device and an angled device, wherein the locking button device and the angled device are arranged in cooperation with each other, and the locking button device can drive the angled device to perform self-locking Or unlock, and at the same time, one hand can operate the locking button and the angled knob at the same time.

As shown in FIG. 1 and FIG. 3 , the locking button device in this example is formed by axially superimposing a first housing 1 , a locking button 2 , a camshaft 3 , an elastic member and a damping member in sequence.

Wherein, the first shell 1 is a cavity shell, which is used to accommodate other components. The cavity shell is provided with a first turning hole 103, and four straight grooves 101 are arranged in the first turning hole 103. Two linear grooves 101 are evenly distributed on the inner circumferential wall of the first turning hole 103, and the distance between two adjacent linear grooves 101 is 90°.

Further, there are eight first triangular teeth 102 adjacent to the linear groove 101, and the distance between two adjacent first triangular teeth 102 is 45°.

The locking button 2 is a cylindrical shaft as a whole, which is arranged at the bottom of the first turning hole 103, and one end thereof is used for pressing by the operator, and adopts an ergonomic design.

The other end peripheral surface of locking button 2 is provided with some space-limiting ribs 201, and some space-limiting ribs 201 cooperate with the linear groove 101 in the first turning hole 103 to set mutually, and here the space-limiting ribs are preferably set as eight.

With such a structure, the limiting rib 201 can be embedded in the linear groove 101 in the first turning hole 103, limiting the radial rotation of the locking button 2, so that the locking button 2 can only move axially along the linear groove 101. sports.

At the same time, eight second triangular teeth 202 are provided on the end surface of the locking button 2 , and the interval between two adjacent second triangular teeth 102 is 45°, which are set in cooperation with the camshaft 3 .

The camshaft 3 is a cylindrical shaft as a whole, and its outer peripheral surface is provided with four bevel teeth 301, and the interval between two adjacent bevel teeth is 90°.

One end of the camshaft 3 is set in cooperation with the locking button 2. In specific applications, the bevel teeth 301 on the camshaft 3 can mesh with the second triangular teeth 202 on the end surface of the locking button 2, and can be located on the first housing 1. Inside the straight line slot Te 101.

The other end of the camshaft 3 is provided with a first stepped end 302, and the first stepped end 302 is arranged in cooperation with the elastic member.

The elastic member here can be a cylindrical spring or a cylindrical rubber member. The elastic member in this example is preferably composed of a spring 4 .

One end of the spring 4 is arranged in cooperation with the camshaft 3 , and the other end is arranged in cooperation with the fixed ring 5 of the damping plate.

A second stepped end 501 is arranged on the damping sheet fixing ring 5 , and the spring 4 is arranged in cooperation with the damping sheet fixing ring 5 through the second stepped end 501 .

The damping plate 6 is arranged on the other end of the spring 4 through the damping plate fixing ring 5, which is used to provide a frictional force for the angle bending device in this example.

When specifically arranged, the damping sheet 6 in this example can be made of a columnar rubber piece or a columnar nylon sheet.

As shown in Figures 1 and 4, the angle bending device in this example includes: a drum 7, an angle angle knob 8, a second housing 9, a damping rubber ring 10, a traction wire 11 and a snap spring 12, wherein the angle angle The knob 8, the second housing 9, the drum 7, and the retaining spring 12 are stacked axially in sequence.

The angled knob 8 is provided with a cylindrical rotating shaft 801 , the cross section 803 of the cylindrical rotating shaft end is square in shape, and the cylindrical rotating shaft end is provided with a step groove 802 for matching positioning.

The second casing 9 is a cavity casing, which is arranged in cooperation with the first casing 1 , and the cavity casing is provided with a second turning hole 901 .

The drum 7 is used for arranging the traction wire 11 , which is in the shape of a disk, and the center of the disk is provided with a square hole 701 for positioning with the stepped groove 802 on the angle knob 8 .

One side of the drum 7 disk is provided with a groove, the other side is provided with a small hole, and the top of the disk is also provided with a U-shaped groove 702. With such a structure, when the traction steel wire 11 is placed, the small hole can be passed through on the one hand, and the other One side is placed in the groove, so that it is stably placed on the drum 7 and is not easy to fall off.

During specific arrangement, the drum 7 is fixed on the angled knob 8 by a jumper 12 .

The cylindrical rotating shaft 801 of the angled knob 8 passes through the second turning hole 901 on the second housing 9 and the square hole 701 on the drum 7 and is arranged corresponding to the damping plate 6 .

The locking button device set based on the above structure, in specific applications, as shown in Figure 1-Figure 5, after pressing the locking button 2 with the index finger of the left hand and releasing it, the camshaft 3 is pushed by the locking button 2, and the pressing force is determined by The second triangular tooth 202 on the locking button 2 is transmitted to the camshaft 3, and the pressing force is decomposed into a radial force and an axial force through the beveled teeth 301 on the outer peripheral surface of the camshaft, and the axial force causes the spring 4 to be pressed and pushed to damp The piece 6 is close to the end surface of the angle knob 8 to generate friction force. After the radial force and the axial force act together, the camshaft 3 is driven to rotate along the slope of the slope. The first triangular tooth 102 in the hole 103 meshes, the axial displacement of the camshaft 3 is fixed, the compression force of the spring 4 is maintained, and friction is generated between the damping plate 6 and the end face of the angle bending knob 8 to make the angle bending device self-locking.

The index finger of the left hand presses the lock button 2 again and releases it, and the camshaft 3 is stressed again. The pressing force is decomposed into a radial force and an axial force through the beveled teeth 301 on the outer peripheral surface, and the radial force and the axial force work together to push The camshaft 3 rotates along the bevel tooth slope, and the bevel teeth 301 on the outer peripheral surface of the previous camshaft are disengaged from the first triangular teeth 102 in the first turning hole 103, and the bevel teeth 301 on the surrounding surface of the camshaft 3 are rotated to slide into the first turning. In the adjacent linear groove 101 in the hole 103, the spring 4 resets, the pressure is unloaded, and the angled device is unlocked.

The angle bending device here pushes the angle bending knob 8 to rotate clockwise or counterclockwise through the thumb of the left hand to drive the traction steel wire 11 to pull the snake bone in the insertion part to bend.

Embodiment two

6 and 7, the endoscope operation self-locking device provided in this example includes: a locking button device and an angled device, wherein the locking button device and the angled device are arranged in cooperation with each other, and the locking button device can be Drive the angled device for self-locking or unlocking, and simultaneously operate the locking button and the angled knob with one hand.

In this example, the damping member in the locking button device is arranged in cooperation with the peripheral surface of the drum 7 in the angle bending device, and the first housing 1 and the second housing 9 are respectively arranged corresponding to the locking button device and the angle bending device, and other The settings are the same as those in Embodiment 1.

Specifically, the damping member in this example includes: a damping sheet 6, a damping seating seat 601 and a placement cover 602, wherein the damping sheet 6 is placed in the first turning hole 103 through the damping seating seat 601, and the placement cover 602 is arranged at the second Flip the end of the hole 103 and cover it completely to prevent the damping seat 601 from falling.

The center of the placement cover 602 is a hollow structure, and the hollow structure is arranged corresponding to the damping sheet 6 .

The damping sheet 6 can move radially in the placement cover 602 .

As shown in FIG. 6 , the drum 7 in this example is arranged in a step shape, and is arranged in cooperation with the square step on the angled knob 8 through the clip spring 12 .

The peripheral surface of the drum 7 is arranged in correspondence with the damping sheet 6 .

The locking button device set based on the above structure, in specific application, as shown in Figure 7, after pressing the locking button 2, the camshaft 3 is pushed by the locking button 2, and the pressure is transmitted to the locking button 2 by the triangular teeth. On the beveled teeth on the camshaft 3, the pressure is decomposed into two components, axial and radial, by the beveled teeth. The camshaft 3 is subjected to the joint action of these two components to rotate radially. After rotating 45°, the camshaft 3 The beveled teeth on the camshaft 3 slide out of the linear groove of the first housing 1 and fall into the triangular teeth of the first housing 1. At this time, the beveled teeth on the camshaft 3 mesh with the triangular teeth on the first housing 1, and the displacement is controlled by Keeping, the displacement compresses the spring 4, and the spring 4 transmits the pressure to the damping plate 6, and the peripheral surface of the drum 7 rubs against the damping plate 6 to generate friction force, and the angled knob 8 is self-locking.

Press the lock button 2 again, the pressure is decomposed into two components, axial and radial, by the bevel teeth on the camshaft 3, and the camshaft 3 is subjected to the joint action of these two components to rotate radially again, after rotating 45° , the bevel teeth of the camshaft 3 slide into the linear groove of the first housing 1, at this time the camshaft 3 is reset to the initial position, the pressure of the spring 4 is released, the damping plate 6 is disengaged from the peripheral surface of the drum 7, and the angled knob 8 to unlock.

The traction steel wire 11 is wound in the U-shaped groove feature on the peripheral surface of the drum 7 , and when the bending angle knob 8 is rotated, the drum 7 is driven to rotate so as to pull the traction steel wire 11 .

The self-locking device for endoscope operation provided by the present invention can operate the locking button and the angled knob simultaneously with one hand. While pressing the locking button with the index finger of the left hand, the thumb presses the angled knob to stabilize the angle of the endoscope. Release the right hand holding the insertion part to assist in operating the locking device to prevent the lens from becoming unstable and losing the target.

The self-locking device for endoscope operation provided by the present invention has a simple structure, and the locking button device and the angle bending device only need to stack the parts in sequence, without gluing and welding operations, which saves man-hours and is low in cost.

Finally, it should be noted that in the description of the present invention, it should be understood that the orientation or positional relationship indicated by the terms "inner", "outer", "axial", "radial", and "surrounding surface" are based on the drawings The orientations or positional relationships shown are only for the convenience of describing the present invention and simplifying the description, but do not indicate or imply that the referred device or element must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be construed as an important aspect of the present invention. limits.

In addition, the terms "first", "second", etc. are used for descriptive purposes only, and should not be construed as indicating or implying relative importance. In the description of the present invention, it should be noted that unless otherwise specified and limited, the term "connection" should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; It can be a mechanical connection or an electrical connection; it can be a direct connection or an indirect connection through an intermediary. Those of ordinary skill in the art can understand the specific meanings of the above terms in the present invention in specific situations. In addition, in the description of the present invention, unless otherwise specified, "plurality" means two or more.

The basic principles, main features and advantages of the present invention have been shown and described above. Those skilled in the industry should understand that the present invention is not limited by the above-mentioned embodiments, and what described in the above-mentioned embodiments and the description only illustrates the principles of the present invention, and the present invention will also have other functions without departing from the spirit and scope of the present invention. Variations and improvements are possible, which fall within the scope of the claimed invention. The protection scope of the present invention is defined by the appended claims and their equivalents.

Claims (6)

1. An endoscope operated self-locking device, comprising: the locking button device comprises a shell, a locking button device and an angle bending device, wherein the shell comprises a first shell and a second shell; the locking button device is formed by axially superposing a locking button, a cam shaft, an elastic piece and a damping piece in sequence and is arranged in the first shell;

the end face of the locking button is provided with a second triangular tooth, the cam shaft is provided with a plurality of inclined plane teeth, one end of the cam shaft is mutually matched with the locking button, and the inclined plane teeth on the cam shaft can be meshed with the second triangular teeth on the end face of the locking button;

the cam shaft can radially rotate and axially move under the pressure of the locking button; the corner bending device is formed by sequentially axially superposing a corner bending knob, a drum wheel and a clamp spring, and is arranged in the second shell; the drum wheel is arranged on the bent angle knob through a clamp spring; the cam shaft can enable the elastic piece to be pressed to push the damping fin; the damping piece can make the bent angle knob self-lock or unlock;

the first shell is a cavity shell, a first hole flanging is arranged on the cavity shell, and four linear grooves and eight first triangular teeth are uniformly distributed in the first hole flanging; a second hole flanging is arranged on the second shell; the locking button is a columnar shaft, one end of the locking button is arranged at the bottom of the first hole flanging, eight limiting ribs are arranged on the peripheral surface of the other end of the locking button, and the limiting ribs are mutually matched with the linear grooves in the first hole flanging; the camshaft is arranged in a columnar shape, and four bevel teeth are uniformly distributed on the outer peripheral surface of the camshaft.

2. The endoscope operated self-locking device according to claim 1, wherein said elastic member is constituted by a columnar spring or a columnar rubber elastic body.

3. The endoscope operated self-locking device of claim 1, wherein the damping member is constituted by a columnar rubber member or a columnar nylon sheet.

4. The endoscope operation self-locking device according to claim 1, wherein a cylindrical rotation shaft is provided on the angle knob, the cross-sectional shape of the end of the cylindrical rotation shaft is square, and a stepped groove is provided on the end of the cylindrical rotation shaft.

5. The endoscope operated self-locking device according to claim 1, wherein said drum is circular, said circular center being provided with a square hole; the round peripheral surface is provided with U-shaped grooves, and the number of the step surfaces is not limited by the round peripheral surface.

6. An endoscope comprising an operation portion and an insertion portion, wherein the operation portion is provided with the self-locking device according to any one of claims 1 to 5.

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