CN110840503A

CN110840503A - Direction-variable clamping device and endoscope anastomat comprising same

Info

Publication number: CN110840503A
Application number: CN201911319435.1A
Authority: CN
Inventors: 刘青; 刘民生; 路新; 赵建钵
Original assignee: BJ ZHF Panther Medical Equipment Co Ltd
Current assignee: BJ ZHF Panther Medical Equipment Co Ltd
Priority date: 2019-12-19
Filing date: 2019-12-19
Publication date: 2020-02-28

Abstract

The invention discloses a reversible clamping device, which comprises a clamping part, a first fixed seat and a second fixed seat, wherein the clamping part comprises a horizontal fixed rod, a return push rod and shifting teeth, the return push rod and the shifting teeth are arranged at the upper part and the lower part of the horizontal fixed rod, two ends of the horizontal fixed rod are rotatably fixed between the first fixed seat and the second fixed seat, two elastic sheets symmetrically arranged at two sides of the clamping part are further arranged between the first fixed seat and the second fixed seat, elastic ends of the two elastic sheets are contacted with the return push rod, and when the shifting teeth swing in a reversed way, the return push rod is under the elastic action of the elastic sheets at two sides of the return push rod to realize the return and. The endoscope anastomat comprises a clamping device, wherein the clamping device is arranged above an initial clamping groove of a pushing rack, and an elastic collision bead is arranged at the tail end of the pushing rack. According to the invention, through the improvement of the clamping device, the clamping part can change along with the movement direction of the pushing rack, and the effect of reducing the triggering force and the resetting force of the instrument is realized. And the elastic collision bead is additionally arranged, so that the reset opening angle is increased, and the reset is more accurate and reliable.

Description

Direction-variable clamping device and endoscope anastomat comprising same

Technical Field

The invention relates to the technical field of medical instruments, in particular to a reversible clamping device and an endoscope anastomat comprising the same.

Background

In surgical operation, the medical endoscopic cutting anastomat becomes an essential auxiliary medical instrument in the process of suturing human tissues. With the development of medicine and product research and development, more and more multifunctional staple products are applied to clinic, and the application range of the multifunctional staple products relates to various fields of gastrointestinal surgery, hepatobiliary surgery, thoracic surgery, urology surgery, gynecology and the like, and becomes one of the essential tools for doctors. The application of the endoscopic cutting anastomat has the advantages of less bleeding in the operation, shorter operation time, capability of reducing manual operation errors, infection avoidance, quick postoperative function recovery and the like.

Most of the existing endoscope anastomats have large restoring force and poor hand feeling when the assembly is bent for use, and the physical burden of doctors is increased. And the resetting opening angle of the component is smaller in a right-turning state, so that the tissue can not be effectively and thoroughly separated from the component after the tissue is cut, the operation time is long, and the medical risk of a patient is increased. The reason is that, the structure of the clamping device in the existing endoscope anastomat is shown in the attached

drawings

1 and 2, the clamping device comprises a clamping part 3 and a clamping spring 2, the clamping spring 2 is sleeved on the outer side of the clamping part 3, two ends of the clamping spring 2 are fixed, the shifting teeth at the lower part of the clamping part 3 can swing for a certain angle along with the movement of the pushing rack 1 under the action of the anastomat pushing rack 1, and the clamping spring 2 is compressed at the moment to accumulate larger restoring force. And because the shifting teeth of the clamping piece 3 in the structure can only incline towards one direction, the direction of the shifting teeth can not be changed, the movement direction of the pushing rack 1 is changed during resetting, the inclining direction of the shifting teeth of the clamping piece 3 is not changed, the resetting force between the pushing rack 1 and the clamping piece 3 is increased, the hand feeling of the instrument is not good during use, the operation time is prolonged, and the burden is brought to doctors and patients.

Therefore, it is obvious that the above-mentioned conventional endoscopic stapler still has inconvenience and drawbacks in structure, method and use, and further improvement is needed. How can establish a novel but screens ware of diversion and including chamber mirror anastomat of this screens ware, make it effectively reduce the apparatus power that resets, increase simultaneously and reset the opening angle, make the anastomat use and feel good, and the subassembly resets reliably safely, and user experience degree promotes greatly, becomes the target that the industry needs the improvement at present.

Disclosure of Invention

The invention aims to provide a clamping device, which can effectively reduce the resetting force of an instrument, improve the use hand feeling of an anastomat and overcome the defects of the clamping device in the existing endoscope anastomat.

In order to solve the technical problem, the invention provides a reversible clamping device which comprises a clamping part, a first fixed seat and a second fixed seat, wherein the clamping part comprises a horizontal fixed rod, and a push-back rod and a shifting tooth which are respectively arranged at the upper part and the lower part of the horizontal fixed rod, two ends of the horizontal fixed rod are rotatably fixed between the first fixed seat and the second fixed seat, two elastic sheets which are respectively and symmetrically arranged at two sides of the clamping part are further arranged between the first fixed seat and the second fixed seat, elastic ends of the two elastic sheets are contacted with the push-back rod at the upper part of the clamping part, and when the shifting tooth at the lower part of the clamping part swings in a turning way, the push-back rod at the upper part of the clamping part is under the elastic action of the elastic sheets at two sides of the clamping part, so that the.

The improved structure is characterized in that the horizontal fixing rod is of a tubular structure, protruding shafts are arranged at the corresponding positions of the first fixing seat and the second fixing seat, and two ends of the tubular structure are respectively rotatably sleeved on the protruding shafts.

The elastic sheet is an L-shaped elastic sheet, the horizontal section of the L-shaped elastic sheet is embedded in the clamping groove in the first fixing seat and/or the second fixing seat, the top of the vertical section of the L-shaped elastic sheet is an elastic end, and the elastic end is provided with a bending plate extending to the push-back rod.

The improved structure is characterized in that the end part of the bending plate is arranged into an inwards concave arc-shaped structure, and the arc-shaped structure is matched with the outer circumference of the return push rod.

In a further improvement, the joint of the horizontal section and the vertical section of the L-shaped elastic sheet is arranged into an arc transition structure.

The improved structure is characterized in that the end part of the horizontal section of the L-shaped elastic sheet is also provided with a bending structure, and the first fixing seat and the second fixing seat are provided with clamping grooves matched with the side structures of the horizontal section.

The invention also aims to solve the technical problem of providing the endoscope anastomat, which not only can effectively reduce the resetting force of the instrument, but also can increase the resetting opening angle of the assembly, so that the assembly is reset reliably and safely, and the user experience is greatly improved.

In order to solve the technical problem, the invention provides a cavity mirror anastomat comprising the clamping device, wherein the cavity mirror anastomat comprises a pushing rack, an initial clamping groove and a terminal clamping groove are formed in the upper end of the pushing rack, the clamping device is arranged above the initial clamping groove, when the cavity mirror anastomat is in an initial state, the shifting teeth of the clamping device fall into the initial clamping groove, the shifting teeth swing towards the pushing direction of the rack along with the pushing of the pushing rack until the pushing rack reaches a terminal position, the shifting teeth fall into the terminal clamping groove under the action of the elastic sheet, when the pushing rack resets, the shifting teeth swing towards the resetting direction of the rack until the pushing rack reaches the initial position, and the shifting teeth fall into the initial clamping groove under the action of the elastic sheet.

In a further improvement, a compression elastic collision bead is arranged between the tail end of the handle of the anastomat and the pushing rack.

In a further improvement, a fixing groove for fixing the first fixing seat and the second fixing seat is arranged on the inner side of the handle shell of the anastomat.

The improved structure is characterized in that a plurality of end point clamping grooves are formed in the upper end of the pushing rack.

After adopting such design, the invention has at least the following advantages:

1. the clamping device can realize the direction-changing swing of the lower shifting teeth of the clamping part by arranging the rotatable clamping part and the elastic sheets arranged on the two sides of the rotatable clamping part, and can keep the downward rotary force of the shifting teeth under the action of the elastic forces of the elastic sheets on the two sides to achieve the purposes of returning and clamping the clamping device, so that the clamping device can flexibly swing in a direction-changing way and can realize the technical effect of clamping.

2. The clamping device is simple and convenient to mount and moderate in elasticity through the arrangement of the L-shaped elastic sheet, and the moderate rotation force of the clamping piece is ensured. And the elasticity of the elastic sheet is further improved through the arc-shaped transition structure.

3. The anastomat has the advantages that through improvement of the clamping device, the clamping piece of the clamping device can change along with the movement direction of the pushing rack, the inclination direction of the clamping piece is always the same as the movement direction of the pushing rack, the purpose of reducing the friction force between the clamping piece and the pushing rack is achieved, and the effect of reducing the triggering force and the resetting force of an instrument is achieved.

4. Still through set up compression elasticity at propulsion rack end and touch the pearl, make this elasticity of compression touch the pearl when advancing the rack and reseing, increase the stroke that resets of advancing the rack, increase the opening angle that resets of subassembly to this elasticity touches the pearl and can also impel to advance the rack and further resume to the most initial position after the termination that resets, and it is accurate, safe and reliable to reset.

Drawings

The foregoing is only an overview of the technical solutions of the present invention, and in order to make the technical solutions of the present invention more clearly understood, the present invention is further described in detail below with reference to the accompanying drawings and the detailed description.

Fig. 1 is a schematic structural diagram of a stopper and a pushing rack in the prior art.

Fig. 2 is a schematic structural diagram of various parts of a stopper and a pushing rack in the prior art.

FIG. 3 is a schematic structural view of the clamping device for the endoscopic stapler according to the present invention.

FIG. 4 is an enlarged view of a part of the structure of the clamping device for the endoscope anastomat.

Fig. 5 is a schematic diagram of the relative position structure of the position limiter and the pushing rack.

Fig. 6 is a schematic view of the structure of the propulsion rack of the present invention.

Fig. 7 is a schematic structural view of the first fixing seat, the locking member and the two resilient pieces of the locking device of the present invention.

Fig. 8 is a schematic structural view of the second fixing seat, the locking member and the two resilient pieces of the locking device of the present invention.

Fig. 9 is a perspective view of the assembled retainer of the present invention.

FIG. 10 is a schematic view showing the structural relationship between the retainer and the inner wall of the housing of the stapler.

Detailed Description

The invention improves the clamping device on the basis of the existing endoscope anastomat, so that the swinging direction of the shifting teeth of the clamping device can be changed along with the moving direction of the pushing rack, namely the clamping device which can change the direction is obtained, and the resetting force of the instrument is effectively reduced. Still bump the pearl through setting up compression elasticity, increase the opening angle that resets of propelling movement rack, make the subassembly accurate that resets, user experience degree promotes greatly. Specific examples thereof are as follows.

Referring to fig. 3 to 6, the endoscopic stapler of the present embodiment includes a pushing rack 1 and a stopper. The upper end of the pushing rack 1 is provided with an initial clamping groove 11 and a terminal clamping groove 12.

Specifically, referring to fig. 7 to 9, the locking device of the present embodiment includes a locking member 4, a first fixing seat 5 and a second fixing seat 6. The clamping member 4 includes a horizontal fixing rod 41, and a push rod 42 and a shifting tooth 43 respectively disposed on the upper portion and the lower portion of the horizontal fixing rod 41, wherein two ends of the horizontal fixing rod 41 are rotatably fixed between the first fixing seat 5 and the second fixing seat 6 to realize the direction-changing swing of the clamping member. Two elastic sheets 7 symmetrically arranged on two sides of the clamping part 4 are further arranged between the first fixing seat 5 and the second fixing seat 6, elastic ends of the two elastic sheets 7 are in contact with the push-back rod 42 on the upper part of the clamping part 4, and when the shifting teeth 43 on the lower part of the clamping part 4 swing back and forth, the push-back rod 42 on the upper part of the clamping part 4 is under the elastic action of the elastic sheets 7 on the two sides, so that the shifting teeth 43 return and clamping actions are realized.

More specifically, the horizontal fixing rod 41 in this embodiment is a cylindrical structure, the first fixing seat 5 and the second fixing seat 6 are provided with

protruding shafts

51 and 61 at corresponding positions, and two ends of the cylindrical structure are respectively rotatably sleeved on the

protruding shafts

51 and 61.

The elastic sheet 7 is an L-like elastic sheet, the horizontal section of the L-like elastic sheet is embedded in the

slots

52 and 62 of the first and

second fixing bases

5 and 6, the top of the vertical section is an elastic end, the elastic end is provided with a bending plate 71 extending to the push-back rod 42, the end of the bending plate 71 is only contacted with the push-back rod 42 when the clamping element 4 does not swing, and no acting force exists. And the end of the bending plate 71 is designed into an inward concave circular arc structure, and the circular arc structure is matched with the outer circumference of the return push rod 42.

In addition, the joint of the horizontal section and the vertical section of the L-shaped elastic sheet is provided with an arc transition structure 72, so that the elasticity of the elastic sheet 7 is improved. In this embodiment, the arc-shaped transition structure 72 is further provided with a middle opening to increase the swing range of the locking member 4.

The horizontal section of the L-shaped elastic sheet is set to be a bending structure 73, and the first fixing seat 5 and the second fixing seat 6 are provided with

clamping grooves

52 and 62 matched with the side structures of the horizontal section, so that the elastic sheet is stably connected with the fixing seats.

The retainer is disposed above the initial slot 11 to hold the stapler at its initial position. The handle shell of the anastomat is internally provided with a fixing groove 9 for fixing the first fixing seat 5 and the second fixing seat 6, as shown in the attached drawing 10, the fixing groove 9 can facilitate the fixing of the fixing seats, so that the clamping device is simple to install, convenient to operate and low in improvement cost.

Thus, when the endoscope anastomat is in an initial state, the shifting teeth 43 of the clamping part 4 fall into the initial clamping groove 11, along with the pushing of the pushing rack 1, the shifting teeth 43 swing towards the rack pushing direction until the pushing rack 1 reaches the end point position, the shifting teeth 43 fall into the end point clamping groove 12 under the action of the elastic sheet 7 on one side, when the pushing rack 1 resets, the shifting teeth 43 swing towards the rack resetting direction until the pushing rack 1 reaches the initial position, and the shifting teeth 43 fall into the initial clamping groove 11 under the action of the elastic sheet 7 on the other side.

In a more preferred embodiment, a compression elastic collision bead 8 is arranged between the tail end of the handle of the anastomat and the pushing rack 1. The function of the elastic collision bead 8 is to compress the elastic collision bead 8 when the push rack 1 resets, so that the reset stroke of the push rack 1 is increased, and the reset opening angle of the assembly is increased. And after the pushing rack 1 is reset, the elastic force of the elastic collision bead 8 can promote the pushing rack 1 to be restored to the most initial position, so that the anastomat is reset accurately, and the resetting repeatability is good, safe and reliable.

Certainly, a plurality of end point clamping grooves 12 can be formed in the upper end of the pushing rack 1, for example, three end point clamping grooves are formed in the embodiment, so that the clamping device can conveniently select the clamping positions of the end points of different types of components, and the application range is expanded.

In the description of the present invention, it should be noted that, unless otherwise explicitly specified or limited, the terms "mounted," "connected," and "connected" are to be construed broadly, e.g., as meaning either a fixed connection, a removable connection, or an integral connection; they may be connected directly or indirectly through intervening media, or they may be interconnected between two elements. The specific meanings of the above terms in the present invention can be understood in specific cases to those skilled in the art.

The above description is only for the purpose of illustrating the preferred embodiments of the present invention and is not to be construed as limiting the present invention in any way, and it will be apparent to those skilled in the art that the above description of the present invention can be applied to various modifications, equivalent variations or modifications without departing from the spirit and scope of the present invention.

Claims

1. The utility model provides a but screens ware of diversion, its characterized in that includes screens piece, first fixing base and second fixing base, the screens piece includes horizontal fixation pole and sets up respectively horizontal fixation pole upper portion and lower part push back rod and dial the tooth, the rotatable fixing in both ends of horizontal fixation pole is between first fixing base and the second fixing base, still be equipped with two respectively the symmetry between first fixing base and the second fixing base and set up the shell fragment of screens piece both sides, two the elasticity end of shell fragment with the push back rod on screens piece upper portion contacts when dialling the tooth diversion swing of screens piece lower part, the push back rod on screens piece upper portion receives the elastic force effect of its both sides shell fragment, realizes dialling the return and the screens action of tooth.

2. The card stopper of claim 1, wherein the horizontal fixing rod is a cylindrical structure, the first fixing seat and the second fixing seat are provided with protruding shafts at corresponding positions, and two ends of the cylindrical structure are respectively rotatably sleeved on the protruding shafts.

3. The clip device as claimed in claim 1, wherein the clip is an L-shaped elastic piece, a horizontal section of the L-shaped elastic piece is embedded in the slot of the first and/or second fixing base, a top of a vertical section of the L-shaped elastic piece is an elastic end, and the elastic end is provided with a bending plate extending to the push-back rod.

4. The retainer according to claim 3, characterized in that the end of the bent plate is designed into an inward concave circular arc structure, and the circular arc structure is matched with the outer circumference of the push-back rod.

5. The clip device as claimed in claim 4, wherein the joint between the horizontal section and the vertical section of the L-shaped elastic piece is configured as an arc transition structure.

6. The retainer according to claim 5, wherein the end of the horizontal section of the L-shaped elastic sheet is provided with a bent structure, and the first fixing seat and the second fixing seat are provided with clamping grooves matched with the side structures of the horizontal section.

7. An endoscope anastomat comprising the clamping device according to any one of claims 1 to 6, wherein the endoscope anastomat comprises a pushing rack, an initial clamping groove and a terminal clamping groove are formed in the upper end of the pushing rack, the clamping device is arranged above the initial clamping groove, when the endoscope anastomat is in an initial state, the shifting teeth of the clamping device fall into the initial clamping groove, along with the pushing of the pushing rack, the shifting teeth swing towards the pushing direction of the rack until the pushing rack reaches the terminal position, the shifting teeth fall into the terminal clamping groove under the action of the elastic sheet, when the pushing rack resets, the shifting teeth swing towards the resetting direction of the rack until the pushing rack reaches the initial position, and the shifting teeth fall into the initial clamping groove under the action of the elastic sheet.

8. The endoscopic stapler of claim 7, wherein a compressed resilient catch is disposed between the end of the stapler handle and the advancing rack.

9. The endoscopic stapler according to claim 8, wherein fixing grooves for fixing the first and second fixing seats are provided inside the handle housing of the stapler.

10. The endoscopic stapler of claim 7, wherein the upper end of the pushing rack is provided with a plurality of end point slots.