CN212996583U

CN212996583U - Handle assembly and anastomat comprising same

Info

Publication number: CN212996583U
Application number: CN202020747665.XU
Authority: CN
Inventors: 陈志�; 林江; 刘伟; 郭毅
Original assignee: Suzhou Tianchen International Medical Technology Co Ltd
Current assignee: Touchstone International Medical Science Co Ltd; Suzhou Tianchen International Medical Technology Co Ltd
Priority date: 2020-05-08
Filing date: 2020-05-08
Publication date: 2021-04-20
Anticipated expiration: 2030-05-08

Abstract

The utility model provides a handle subassembly reaches anastomat including it, handle subassembly are used for medical anastomat, include: a first handle and a second handle; the sliding groove is arranged on the first handle and comprises a first section and a second section which are communicated, the sliding block is arranged in the sliding groove and can slide along a first direction, and the first direction is the extending direction of the sliding groove; when the sliding block is positioned at the first section of the sliding groove, the first handle and the second handle are not linked; when the sliding block is positioned at the second section of the sliding groove, the first handle and the second handle are linked through the sliding block; and a guide portion which guides the slider to move in the first direction and prevents the slider from moving in the second direction. This handle subassembly is through add the removal of guide part restriction slider in other directions on slider or spout, makes the slider slide along spout extending direction more steadily, guarantees the accuracy of slider position, realizes the smooth meshing and the separation of first in command and second handle, improves the stability of operation anastomat.

Description

Handle assembly and anastomat comprising same

Technical Field

The utility model relates to the technical field of medical equipment, especially, relate to anastomat technical field, concretely relates to handle subassembly reaches anastomat including it.

Background

In the prior art, a circular tube-shaped anastomat comprises an anastomat body, a handle assembly movably connected with the anastomat body and a nail anvil assembly matched with the anastomat body. The anastomat body comprises a nail bin assembly arranged on the far end side, and the nail bin assembly comprises an annular nail bin and a cutter; and a knob provided on a proximal end side of the body, the knob being rotatable relative to the body. Here, the distal side and the proximal side are relative to the operator, and the end closer to the operator is the proximal side, and the end farther from the operator is the distal side. The nail anvil component comprises a nail anvil, a nail anvil cap arranged at the top of the nail anvil, a knife anvil arranged inside the nail anvil, and a nail anvil shaft detachably connected with the anastomat body. In the operation process, after tumor tissues are removed by separation, the nail anvil shaft penetrates out of a purse at one end of the tissues and is arranged at the far end side of the anastomat body, the knob is rotated to gradually reduce the distance between the nail anvil and the nail bin to a proper distance, and then the nail anvil and the nail bin reach a cocked state, and the handle is held to trigger the instrument to complete anastomosis. With the continuous development of medical instruments, the anastomat is also widely applied to surgical operations such as hemorrhoid treatment, tumor treatment, digestive tract reconstruction and the like.

With the development of technology, people have improved the firing transmission mechanism of the stapler, dividing the handle assembly into two separate handles: the first handle and the second handle are matched through a sliding chute and sliding block matching mechanism in a selective linkage mode. When the sliding block is located at a specific position of the sliding groove, the first handle and the second handle can be linked, a doctor holds the first handle, can drive the second handle to rotate, and then pushes the trigger block inside the anastomat through the second handle, so that the trigger of the anastomat is completed.

However, the degree of freedom of the matching between the sliding groove and the sliding block in the prior art is relatively large, the sliding block can move in the extending direction of the sliding groove and can also move freely in other directions, the positioning precision of the sliding block in the sliding groove is adversely affected, the matching precision of the first handle and the second handle can be affected, and the force transmission efficiency is low.

It is to be noted that the information disclosed in the above background section is only for enhancement of understanding of the background of the present invention and therefore may include information that does not constitute prior art known to a person of ordinary skill in the art.

SUMMERY OF THE UTILITY MODEL

To the problem among the prior art, the utility model aims to provide a handle subassembly reaches anastomat including it, the handle subassembly is through the removal of restriction slider in the direction of rotation, realizes the smooth meshing and the separation of the first in command and the second in command, improves the stability and the reliability of operating the anastomat.

An embodiment of the utility model provides a handle subassembly for medical anastomat, the handle subassembly includes:

a first handle and a second handle;

the sliding groove is arranged on the first handle and comprises a first section and a second section which are communicated, the sliding block is arranged in the sliding groove and can slide along a first direction, and the first direction is the extending direction of the sliding groove;

when the sliding block is positioned at the first section of the sliding groove, the first handle and the second handle are not linked; when the sliding block is positioned at the second section of the sliding groove, the first handle and the second handle are linked through the sliding block; and

a guide portion that guides the slider to move in the first direction and prevents the slider from moving in a second direction.

According to an example of the present invention, when the chute is located at the first handle, the second direction is perpendicular to the side wall of the first handle;

or when the sliding groove is positioned on the second handle, the second direction is vertical to the side wall of the second handle.

According to an example of the present invention, the sliding groove is located on the first handle, the first handle includes a cavity having two side walls, and two side walls of the cavity are respectively provided with one sliding groove;

the slider includes the conflict portion between two sliding parts and the sliding part, two the sliding part slidable respectively sets up in one in the spout.

According to an example of the present invention, the guide portion includes at least a first guide portion provided in the sliding portion.

According to an example of the present invention, the first guiding portion is a first rib plate disposed on the protrusion of the sliding portion, and the first rib plate is engaged with the inner side wall of the first handle and/or engaged with the outer side wall of the first handle.

According to an example of the present invention, the first guide portion is a second rib plate provided at the protrusion of the sliding portion, the sliding groove is provided with a first groove, and the first groove and the second rib plate constitute a slide rail mechanism.

According to an example of the present invention, the guiding portion includes at least one second guiding portion disposed at a position of the first handle in the sliding groove.

According to an example of the present invention, the second guide portion is a third rib plate protruding from the sliding groove, the sliding portion is provided with a second groove, and the second groove and the third rib plate constitute a slide rail mechanism.

According to an example of the present invention, the second guiding portion is a fourth rib plate protruding from the sliding groove, the fourth rib plate is respectively engaged with the inner wall of the sliding portion and/or the outer wall of the sliding portion.

The utility model also provides an anastomat, including foretell handle subassembly.

The utility model provides a handle subassembly, through add guide portion restriction slider on the slider except following the ascending removal in the outside side of spout extending direction, realize that the slider slides along spout extending direction more steadily, guarantee the accuracy nature of slider position to realize the smooth meshing and the separation of the first in command and the second in command, the medical anastomat that has above-mentioned handle subassembly has higher operating stability and reliability.

Drawings

Other features, objects, and advantages of the invention will be apparent from the following detailed description of non-limiting embodiments, which proceeds with reference to the accompanying drawings and which is incorporated in and constitutes a part of this specification, illustrating embodiments consistent with this application and together with the description serve to explain the principles of this application. It is obvious that the drawings in the following description are only some embodiments of the invention, and that for a person skilled in the art, other drawings can be derived from them without inventive effort.

FIG. 1 is a schematic view of a handle assembly;

FIG. 2 is a schematic structural view of a slider for the handle assembly of FIG. 1;

FIG. 3 is a schematic view of a first handle;

fig. 4 is a schematic structural view of a handle assembly according to an embodiment of the present invention;

fig. 5 is a schematic structural view of a first handle according to a first embodiment of the present invention;

fig. 6 is a schematic structural view of a slider according to a first embodiment of the present invention;

fig. 7 is a schematic structural view of a slider and a first handle according to a first embodiment of the present invention;

fig. 8 is a schematic structural view of a first handle according to a second embodiment of the present invention;

FIG. 9 is a schematic structural view of a first handle according to a third embodiment of the present invention;

fig. 10 is a schematic structural view of a first handle according to a fourth embodiment of the present invention.

Detailed Description

Example embodiments will now be described more fully with reference to the accompanying drawings. Example embodiments may, however, be embodied in many different forms and should not be construed as limited to the examples set forth herein; rather, these embodiments are provided so that this disclosure will be thorough and complete, and will fully convey the concept of example embodiments to those skilled in the art. The described features, structures, or characteristics may be combined in any suitable manner in one or more embodiments.

Furthermore, the drawings are merely schematic illustrations of the present disclosure and are not necessarily drawn to scale. The same reference numerals in the drawings denote the same or similar parts, and thus their repetitive description will be omitted. Some of the block diagrams shown in the figures are functional entities and do not necessarily correspond to physically or logically separate entities.

Fig. 1 to 3 are schematic structural views of a handle assembly. The handle assembly is used for the percussion of anastomat, wherein, handle assembly includes: a first handle 1 'and a second handle 2'; a sliding groove 11 ' and a sliding block 3 ', the sliding groove 11 ' comprises a first section and a second section which are communicated, the sliding groove 11 ' is positioned on the first handle 1 ', and the sliding block 3 ' can move in the sliding groove 11 '. The slider 3 ' generally comprises two sliding portions 31 ' and a slider abutting portion located in the middle of the two sliding portions 31 ', the two sliding portions 31 ' are respectively located in the sliding grooves 11 ' on both sides, the slider abutting portion can be designed with a slider guiding portion 32 ' (see fig. 2), and a handle guiding portion 21 ' (see fig. 3) is provided on the second handle.

When the sliding block is located at the first section of the sliding groove 11 ', the first handle 1' and the second handle 2 'are not linked, specifically, when the first handle 1' rotates counterclockwise in the view angle of fig. 1, the sliding block 3 'does not interfere with the second handle 2', the second handle is located at the safety position, and the anastomat is not triggered at this time. When the sliding block 3 ' is positioned at the second section of the sliding groove 11 ', the first handle 1 ' and the second handle 2 ' are linked through the sliding block 3 '; specifically, when the first handle 1 'is rotated, the sliding block 3' is abutted against the second handle 2 ', and reliable engagement is formed between the sliding block and the second handle, and at the moment, the second handle 2' can drive a firing block inside the anastomat to move towards the far-end side, so that the anastomat is fired.

However, when the first handle 1 ' and the second handle 2 ' are linked, the binding force of the two handles engaged through the handle guiding portion 21 ' and the slider guiding portion 32 ' is along the moving direction 3 ' of the slider, i.e. along the extending direction of the sliding chute, how to reduce or limit the movement of the slider along the vertical direction (rotating direction) of the sliding chute, so as to realize the smooth engagement and separation of the slider and the second handle.

Fig. 4 is a schematic structural diagram of a handle assembly for a medical stapler according to an embodiment of the present invention, specifically, the handle assembly includes:

a first handle 1 and a second handle 2;

the sliding groove 11 is arranged on the first handle 1, the sliding groove 11 comprises a first section and a second section which are communicated, the sliding block 3 is arranged in the sliding groove 11, the sliding block 3 can slide along a first direction, and the first direction is a sliding groove extending direction;

whether the sliding block 3 is abutted against the second handle 2 is determined by the abutting part 21 arranged on the second handle 2. When the sliding block 3 is located at the first section of the sliding slot 11, the first handle 1 and the second handle 2 are not linked, that is, when the doctor holds the first handle 1, the first handle 1 rotates counterclockwise in the viewing angle of fig. 4, at this time, the sliding block 3 rotates along with the first handle 1, and the rotation path of the sliding block 3 does not interfere with the interference part 21 of the second handle 2, so that the rotation of the first handle 1 does not drive the rotation of the second handle 2, the second handle 2 is still at the safety position, and the stapler cannot be fired.

When the sliding block 3 is located at the second section of the sliding slot 11, the first handle 1 and the second handle 2 are linked through the sliding block, that is, when the doctor holds the first handle 1, the first handle 1 rotates counterclockwise in the view angle of fig. 4, at this time, the sliding block 3 rotates along with the first handle 1, the rotation path of the sliding block 3 interferes with the interference portion 21 of the second handle 2, and the rotation of the sliding block 3 pushes the rotation of the interference portion 21, so that the rotation of the first handle 1 drives the rotation of the second handle 2, and the counterclockwise rotation of the second handle 2 pushes the trigger block inside the anastomat to move to the distal end side, thereby triggering the anastomat.

In this embodiment, the stapler may further comprise a pointer for controlling the movement of the slider 3, which may indicate, on the one hand, whether the stapler is ready for firing and, on the other hand, may drive the slider 3 from the first section to the second section of the chute 11. When the anastomat does not reach the cocked state, the sliding block 3 is located at the first section of the sliding groove 11, in the process that the distance between the nail bin assembly and the nail anvil assembly is drawn close through the rotary knob of the rotary anastomat, the rotary knob can also sequentially pass through the screw rod and the pull piece to draw the pointer to rotate, in the rotating process of the pointer, the sliding block 3 can be driven to move towards the second section of the sliding groove 11, when the distance between the nail bin assembly and the nail anvil assembly is proper, the sliding block 3 is located at the second section of the sliding groove 11, and the anastomat can be cocked. The doctor can also see the position of the pointer at this time through the viewing window. Therefore, by dividing the handle assembly into the first handle and the second handle, it is possible to prevent the misfiring when the stapler is not completely prepared.

Because the position of the sliding block is directly related to the linkage state of the second handle and the first handle, the position of the sliding block directly influences the operation effect of the anastomat by judging whether the anastomat can be fired when a doctor holds the first handle or not. In this embodiment, in order to maintain the positional accuracy of the movement of the slider 3 in the chute 11, the slider 3 of this embodiment is provided with a guide portion that guides the movement of the slider in the first direction and prevents the movement of the slider 3 in the second direction.

Fig. 5 is a schematic structural diagram of a first handle in a first embodiment, in this embodiment, a sliding groove 11 is disposed on the first handle 1, the first handle 1 includes a cavity having two side walls 12, and the two side walls 12 of the cavity are respectively disposed with one sliding groove 11. In this embodiment, the two sliding grooves 11 are in the same shape and have an open straight line shape. Here, the face of the first handle 1 facing into the cavity is defined as the inner side wall 121 of the first handle 1, and the face of the first handle 1 facing away from the cavity is defined as the outer side wall 122 of the first handle 1.

Fig. 6 is a schematic structural diagram of the slider in the first embodiment, and the slider 3 includes two sliding portions 31 and an interference portion 32 between the two sliding portions, and the interference portion 32 is used for interfering with the second handle 2. Here, a surface of the sliding portion 31 located inside the cavity is defined as an inner wall of the sliding portion 31, and a surface of the sliding portion 31 located outside the cavity is defined as an outer wall of the sliding portion 31.

The embodiments of fig. 6 and 7 are both examples in which the guide portion comprises at least one first guide portion provided to the sliding portion.

In the embodiment of fig. 6, the guiding portions include two first guiding portions 41 disposed on two of the sliding portions 31, where the two first guiding portions 41 are respectively protruding first rib plates disposed on the bottom of the sliding portion 31, and when the first rib plates are disposed on the inner wall of the sliding portion 31, the first rib plates are engaged with the inner side wall 121 of the first handle 1; when first gusset set up in the outer wall of sliding part 31, first gusset with the lateral wall 122 of the first in command 1 agrees with mutually, the utility model discloses the inner wall and the outer wall that do not get rid of sliding part 31 all are provided with the design of first gusset. The present invention does not exclude the technical solution of only providing a first guiding portion 41 on one sliding portion 31.

In the above embodiment, the schematic structural diagram of the slide block 3 disposed in the sliding slot 11 is shown in fig. 7.

In the actual use of the medical stapler, when the sliding block 3 slides in the sliding slot 11, it is desirable that the sliding block slides only along the extending direction of the sliding slot 11 (i.e. the direction of D1 in fig. 5), if the sliding slots 11 of the two side walls are considered as a plane, i.e. the purpose of the present invention is to limit the rotation of the sliding block relative to the plane or relative to the plane, and also to limit the sliding movement perpendicular to the extending direction of the sliding slot (i.e. the direction of D2 in fig. 5). When slider 3 only has the slip degree of freedom along 11 extending directions of spout, the slip of slider is more stable, at this moment, more can guarantee the accuracy nature of slider 3 position, and the location that slider 3 contradicts with second handle 2 is also more accurate, realizes meshing and separating smoothly of slider 3 and second handle 2.

For the above purpose, preferably, when the sliding groove 11 is located on the first handle 1, the second direction is a direction perpendicular to the side wall 12 of the first handle 1. Or when the sliding groove is positioned on the second handle, the second direction is vertical to the side wall of the second handle.

In the above embodiments, the guiding portion is a first rib plate disposed on the bottom surface of the sliding portion 31 and protruding downward, and it should be noted that the guiding portion is a first rib plate disposed on the top surface of the sliding portion 31 and protruding upward, or the first rib plates disposed on both the bottom surface and the top surface of the sliding portion 31 and protruding upward do not exceed the technical scope of the present invention. However, the length of the first rib plate and the like need to be matched with the space of the sliding groove and the size of the sliding block.

Fig. 8 is a schematic structural diagram of a second handle in a second embodiment of the present invention, which is different from the first embodiment in that: the first guiding portion may be a protruding second rib (not shown in the drawings) provided on the sliding portion 31, that is, the second rib is not provided on the inner wall or the outer wall of the sliding portion 31, but provided on the bottom surface of the sliding portion 31, in this case, a first concave groove 111 that is concave downward is also provided at a position corresponding to the upper surface of the sliding chute 11, and the first concave groove 111 and the second rib constitute a sliding rail mechanism. In another alternative embodiment, the guiding portion may be a second rib protruding upwards on the top surface of the sliding portion 31, and the first groove 111 recessed upwards is disposed on the lower surface of the sliding chute 11 corresponding to the guiding portion. The second rib is embedded in the first groove 111 and is guided by the first groove 111 to limit the moving direction of the chute 3.

Fig. 9 is a schematic structural view of a first handle according to a third embodiment of the present invention. In contrast to the embodiment of fig. 8, the guiding portion comprises at least one second guiding portion 42 provided at the first handle at the location of the chute.

In the embodiment of fig. 9, two protruding third rib plates included in the second guiding portion 42 are respectively disposed in the sliding groove 11, and a second groove is disposed in a position corresponding to the second rib plate in each sliding portion 31, and the second groove and the third rib plates form a sliding rail mechanism. The present invention does not exclude the technical solution of providing a second guiding portion 42 only on one sliding portion 31.

Fig. 10 is a schematic structural view of a first handle according to a fourth embodiment of the present invention. This embodiment differs from the first embodiment in that: the protruded rib plate can be used as a guiding part and also can be arranged on the first handle, and the second guiding part 42 is a fourth rib plate which is arranged at the position of the first handle 1 in the chute and protrudes out of the chute 11.

In the embodiment of fig. 10, two fourth rib plates are respectively disposed on the two outer side walls 122 at the lower surface of the sliding chute 11 and protrude from the lower surface of the sliding chute 11, and similarly, in other embodiments, a single or two fourth rib plates may be disposed on the two outer side walls 122 at the upper surface of the sliding chute 11 and protrude from the upper surface of the sliding chute 11, and the fourth rib plates are respectively engaged with the outer walls of one sliding portion. The slider 3 at this time may adopt the structure of fig. 2.

Similarly, the fourth rib plates may be respectively disposed on two inner side walls 121 of the sliding groove 11, which protrude from the sliding groove, and at this time, the two fourth rib plates are respectively engaged with the inner wall of one sliding portion 31. The present invention does not exclude the technical solution of only arranging a second guiding portion 42 at a chute.

In another alternative embodiment, the sliding groove 11 may also be disposed on the second handle 2, the guiding portion may also be disposed on the sliding block 3 or the second handle 2, and the guiding portion may be disposed by adopting the structures of the above embodiments, which will not be described herein again. When the sliding block 3 is located at the first section of the sliding chute 11 and the first handle 1 is rotated, the rotating path of the first handle 1 does not interfere with the sliding block 3, the second handle 2 does not rotate, the anastomat is not fired at the moment, when the sliding block 3 is located at the second section of the sliding chute 11 and the first handle 1 is rotated, the rotating path of the first handle 1 interferes with the sliding block 3, and the second handle 2 rotates along with the rotating path to fire the anastomat.

The utility model also provides an anastomat, including foretell handle subassembly. When the anastomat does not reach the percussion state, the first handle can not drive the second handle, the anastomat can not be triggered, a doctor can also judge the percussion state through operation experience, and only when the anastomat reaches the percussion state, the motion of the first handle can drive the motion of the second handle, and then the anastomat is triggered. Therefore, on the basis of avoiding the anastomat from being fired by mistake, the condition that the anastomat shell is cracked is avoided. And simultaneously, the utility model discloses a handle subassembly is through the guide portion of design, can restrict the slider along the outside motion of other directions of spout extending direction, guarantees the accuracy nature of slider position, realizes the smooth meshing and the separation of the first in command with the second in command, has improved the rotatory stable form of the first in command, has also improved medical identical utensil operating stability and reliability.

To sum up, the utility model provides a handle subassembly is through addding guide portion restriction slider on the slider except following the ascending removal of the outside side of spout extending direction, realizes that the slider slides along spout extending direction more steadily, guarantees the accuracy nature of slider position to realize smooth meshing and the separation of slider and second handle, the medical anastomat that has above-mentioned handle subassembly has higher operating stability and reliability.

The foregoing is a more detailed description of the present invention, taken in conjunction with the specific preferred embodiments thereof, and it is not intended that the invention be limited to the specific embodiments shown and described. It will be evident to those skilled in the art that the present application is not limited to the details of the foregoing illustrative embodiments, and that the present application may be embodied in other specific forms without departing from the spirit or essential attributes thereof. The present embodiments are therefore to be considered in all respects as illustrative and not restrictive, the scope of the application being indicated by the appended claims rather than by the foregoing description, and all changes which come within the meaning and range of equivalency of the claims are therefore intended to be embraced therein. Any reference sign in a claim should not be construed as limiting the claim concerned. Furthermore, it is obvious that the word "comprising" does not exclude other elements or steps, and the singular does not exclude the plural. A plurality of units or means recited in the apparatus claims may also be implemented by one unit or means in software or hardware. It is to be understood that the terms "lower" or "upper," etc., are used to describe features of the exemplary embodiments with reference to the positions of such features as displayed in the figures; the terms first, second, etc. are used to denote names, but not any particular order.

Claims

1. A handle assembly for a medical stapler, the handle assembly comprising:

a first handle and a second handle;

the sliding groove is arranged on the first handle or the second handle and comprises a first section and a second section which are communicated, the sliding block is arranged in the sliding groove and can slide along a first direction, and the first direction is the extending direction of the sliding groove;

2. The handle assembly of claim 1, wherein the second direction is perpendicular to a sidewall of the first handle when the chute is positioned at the first handle;

3. The handle assembly of claim 1, wherein said slide slot is located on said first handle, said first handle comprising a cavity having two side walls, each of said two side walls of said cavity being provided with a respective one of said slide slots;

4. The handle assembly of claim 3, wherein the guide portion comprises at least a first guide portion disposed on the sliding portion.

5. The handle assembly according to claim 4, wherein the first guide portion is a protruding first rib provided to the sliding portion, the first rib engaging with an inner sidewall of the first handle and/or an outer sidewall of the first handle.

6. The handle assembly according to claim 4, wherein the first guide portion is a protruding second rib plate provided on the sliding portion, the sliding groove is provided with a first groove, and the first groove and the second rib plate form a sliding rail mechanism.

7. The handle assembly of claim 3, wherein the guide portion comprises at least a second guide portion disposed at the first handle at the location of the chute.

8. The handle assembly according to claim 7, wherein the second guide portion is a protruding third rib plate disposed in the sliding groove, the sliding portion is provided with a second groove, and the second groove and the third rib plate form a sliding rail mechanism.

9. The handle assembly according to claim 7, wherein the second guiding portion is a fourth rib protruding from the sliding slot and disposed at the position of the sliding slot on the first handle, and the fourth rib is engaged with an inner wall of the sliding portion and/or an outer wall of the sliding portion, respectively.

10. A stapler comprising a handle assembly according to any one of claims 1 to 9.