anastomat

Abstract

The anastomat of the application comprises a shaft body, a jaw body, a bending control pull rod, a push blade and a rigid protection piece, the shaft body is fixedly connected with a connecting piece, the jaw body is fixedly connected with a rotating seat, the rotating seat is rotationally connected with the connecting piece; the bending control pull rod drives the jaw body to deflect relative to the shaft body through the rotating seat; the push blade can deflect with the rotating seat; the rigid protection piece is arranged between the rotating seat and the shaft body and is rotationally connected with the connecting piece, a through slot is formed in the rigid protection piece to allow the push blade to pass through, the rigid protection piece can deflect with the push blade, and the rigid protection piece is limited by abutting against the rotating seat; wherein the slot wall of the through slot can support the deflected push blade when the rigid protection piece is limited by abutting. In this way, the rigid protection piece can realize the following protection of the push blade, and the rigid protection piece will not affect the deflection of the jaw body in this process, so that the jaw body can realize large-angle turning when the anastomat works.

Description

Technical Field

[0001] This application belongs to the field of medical device technology, and in particular relates to a stapler. Background Technology

[0002] A stapler is a medical device used to replace manual suturing. Its main working principle is to use titanium staples to separate or anastomose tissue, similar to a stapler. During operation, the pusher blade needs to withstand an axial force of up to 600N. Due to the resistance from the pusher staples at the front end and the impact force from the drive shaft at the rear end, combined with the flexible structure of the pusher blade itself, it is easy for the blade to bend at the turning joints when subjected to excessive axial force. In severe cases, this can even cause the blade to fold, making it impossible to advance or retract, leading to serious failure of the stapler. Especially after the jaws deflect at a large angle, the impact force is greatly lost at the joints, easily causing the pusher blade to excessively arch and deform outwards at the joints. Summary of the Invention

[0003] In view of this, it is necessary to provide a stapler to solve the problem of excessive bending failure of the pusher blade caused by large-angle deflection.

[0004] An anastomosis device, the anastomosis device comprising:

[0005] The shaft body is fixedly connected with a connecting piece;

[0006] The jaw body is fixedly connected to a rotating seat, and the rotating seat is rotatably connected to the connecting piece.

[0007] A bending control rod is movably mounted on the shaft body and connected to the rotating seat in a transmission manner. The bending control rod is used to drive the rotating seat to rotate on the connecting piece, so as to drive the jaw body to deflect relative to the shaft body through the rotating seat.

[0008] The pusher blade passes through the rotating seat from the shaft body and is connected to the pusher drive in the jaw body, and the pusher blade can deflect with the rotating seat;

[0009] A rigid protective component is disposed between the rotating seat and the shaft body and is rotatably connected to the connecting piece. The rigid protective component has a through groove for the pusher blade to pass through, and the rigid protective component can deflect with the pusher blade and abut against and limit the rigid protective component with the rotating seat.

[0010] The groove wall of the through groove can provide abutment and support to the deflected pusher blade when the rigid protective member abuts and limits its movement.

[0011] Understandably, in this application, the rigid protective component rotates on the connecting plate following the pusher blade, and the rigid protective component abuts against and supports the deflected pusher blade by utilizing the abutment limit between the rigid protective component and the rotating seat. In this way, the rigid protective component can provide following protection for the pusher blade, and during this process, the rigid protective component will not affect the deflection of the jaw body. This allows for large-angle turning of the jaw body during operation of the stapler and meets the requirements of large-angle rotation in operating conditions.

[0012] In one embodiment, the rigid protective member has an abutting surface, and the rotating seat has an abutting mating surface, the abutting mating surface abutting against the abutting surface to circumferentially limit the rigid protective member to the rotating seat;

[0013] Both the contact surface and the contact mating surface are configured as arc-shaped surfaces.

[0014] In one embodiment, the number of abutting surfaces is two; the two abutting surfaces are arranged on both sides of the through groove along the thickness direction of the pusher blade.

[0015] It is understandable that by using two contact surfaces to abut against the rotating seat respectively, the rigid protective component can provide follow protection when the pusher blade deflects in two opposite directions.

[0016] In one embodiment, the through slot includes a first slot and a second slot that are interconnected, and the pusher blade passes through the first slot and the second slot in sequence along the extension direction of the pusher blade;

[0017] The width of the first groove gradually decreases towards the second groove.

[0018] Understandably, the width of the first groove is gradually reduced towards the rotating seat to ensure smooth movement of the pusher blade when it deflects.

[0019] In one embodiment, at least a portion of the rigid protective member extends into the rotating seat at the location of the second groove.

[0020] In one embodiment, the width of the second groove remains consistent along the extension direction of the pusher blade.

[0021] In one embodiment, there are two rigid protective members and two connecting pieces. The two rigid protective members correspond one-to-one with the two connecting pieces, and the two rigid protective members are independent of each other and are rotatably connected to the corresponding connecting pieces respectively.

[0022] Along the thickness direction of the connecting piece, the two rigid protective members are symmetrically arranged on both sides of the pusher blade.

[0023] Understandably, using two independent rigid protective components to simultaneously protect the push blade from rotation provides clearance for the bending control tie rod.

[0024] In one embodiment, the pusher blade has a curved portion, and the pusher blade is deflectable through the curved portion;

[0025] The stapler also includes two turning springs, which are arranged on both sides of the curved portion along the thickness direction of the pusher blade to protect the curved portion.

[0026] It is understandable that by using a turning spring to press against the curved part of the pusher blade, the turning spring can bend along with the rotation of the curved part on the pusher blade, thus providing flexible support for the curved part of the pusher blade and preventing excessive bending of the curved part.

[0027] In one embodiment, the two ends of the turning spring are respectively engaged with the shaft body and the jaw body;

[0028] Along the extending direction of the turning spring, one end of the turning spring is movably disposed on the corresponding shaft body or the corresponding jaw body.

[0029] In one embodiment, the bending control rod is configured as a rigid component;

[0030] The bending control rod is movably connected to the rotating seat and is used to drive the rotating seat to rotate relative to the connecting piece.

[0031] Due to the application of the above technical solution, this application has the following advantages compared with the prior art:

[0032] The stapler claimed in this application has a rigid protective member that rotates on the connecting plate along with the pusher blade. The rigid protective member and the rotating seat abut and limit the movement of the pusher blade after it deflects. In this way, the rigid protective member can follow and protect the pusher blade. During this process, the rigid protective member will not affect the deflection of the jaw body. This allows the jaw body to turn at a large angle during the operation of the stapler and meets the working conditions of large-angle rotation. Attached Figure Description

[0033] To more clearly illustrate the technical solutions in the embodiments of this application or the conventional technology, the drawings used in the description of the embodiments or the conventional technology will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this application. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0034] Figure 1 This is a partial structural schematic diagram of the stapler provided in an embodiment of this application;

[0035] Figure 2 for Figure 1 Enlarged view of section A in the middle;

[0036] Figure 3 This is a partial structural schematic diagram of the stapler provided in one embodiment of this application;

[0037] Figure 4 for Figure 3 Enlarged view of section B;

[0038] Figure 5 This is a partial structural schematic diagram of a stapler provided in an embodiment of this application, wherein the jaw body is deflected in one direction relative to the shaft body;

[0039] Figure 6 for Figure 5 Enlarged view of section C;

[0040] Figure 7 This is a partial structural schematic diagram of a stapler provided in an embodiment of this application, wherein the jaw body is deflected in another direction relative to the shaft body;

[0041] Figure 8 for Figure 7 Enlarged view of section D;

[0042] Figure 9 This is a structural schematic diagram of a rigid protective member provided in an embodiment of this application;

[0043] Figure 10 This is a structural schematic diagram from another perspective of a rigid protective member provided in an embodiment of this application;

[0044] Figure 11 This is a schematic diagram of the structure of the turning spring provided in one embodiment of this application when it is assembled between the shaft body and the jaw body.

[0045] Reference numerals: 100, stapler; 10, shaft body; 11, connecting piece; 12, first slot; 20, jaw body; 21, rotating seat; 211, protrusion; 212, mating surface; 22, second slot; 30, bending control rod; 31, insertion hole; 40, pusher blade; 41, bending part; 50, rigid protective component; 51, through groove; 511, groove wall; 5111, first groove; 5112, second groove; 52, mating surface; 60, turning spring; 61, first locking part; 62, second locking part. Detailed Implementation

[0046] The technical solutions of the embodiments of this application will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only a part of the embodiments of this application, and not all of them. Based on the embodiments of this application, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of this application.

[0047] It should be noted that when a component is said to be "located on" another component, it can be directly located on the other component or may have an intervening component. When a component is considered to be "located on" another component, it can be directly located on the other component or may have an intervening component. When a component is considered to be "fixed to" another component, it can be directly fixed to the other component or may have an intervening component.

[0048] Unless otherwise defined, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this application belongs. The terminology used in this specification is for the purpose of describing particular embodiments only and is not intended to be limiting of the application. The term "and / or" as used herein includes any and all combinations of one or more of the associated listed items.

[0049] like Figures 1 to 9 As shown, an embodiment of the stapler 100 provided in this application includes a shaft body 10, a jaw body 20, a bending control rod 30, a pusher blade 40, and a rigid protective component 50. A connecting piece 11 is fixedly connected to the shaft body 10, and a rotating seat 21 is fixedly connected to the jaw body 20. The rotating seat 21 is rotatably connected to the connecting piece 11. The bending control rod 30 is movably mounted on the shaft body 10 and is drivenly connected to the rotating seat 21. The bending control rod 30 drives the rotating seat 21 to rotate on the connecting piece 11, thereby causing the jaw body 20 to deflect relative to the shaft body 10. The pusher blade 40 passes through the rotating seat 21 from the shaft body 10 and is drivenly connected to a pusher blade (not shown) inside the jaw body 20. The pusher blade 40 can deflect along with the rotating seat 21; the rigid protective member 50 is disposed between the rotating seat 21 and the shaft body 10 and is rotatably connected to the connecting piece 11. The rigid protective member 50 has a through groove 51 for the pusher blade 40 to pass through, and the rigid protective member 50 can deflect along with the pusher blade 40, and the rigid protective member 50 abuts and limits the contact with the rotating seat 21; wherein, the groove wall 511 of the through groove 51 can abut and support the deflected pusher blade 40 when the rigid protective member 50 abuts and limits the contact. That is to say, the rigid protective member 50 and the rotating seat 21 of this application are independent of each other and are respectively hinged to the connecting piece 11.

[0050] It is understood that the rigid protective member 50 can rotate on the connecting piece 11 along with the pusher blade 40, and the rigid protective member 50 and the rotating seat 21 are used to abut and limit the pusher blade 40 after it is deflected. This allows the bent part 41 of the pusher blade 40 to be supported by the groove wall 511 of the through groove 51 on the rigid protective member 50 when the pusher blade 40 is subjected to axial force, and to protect the pusher blade 40 and prevent the bent part 41 of the pusher blade 40 from bending excessively. In this way, the rigid protective member 50 can follow and protect the pusher blade 40. In this process, the rigid protective member 50 will not affect the deflection of the jaw body 20. This allows the jaw body 20 to turn at a large angle when the stapler 100 is working and meets the working conditions of large-angle rotation.

[0051] It should be noted that the connecting piece 11 and the rotating seat 21 together form a turning joint between the shaft body 10 and the jaw body 20, so that when the stapler 100 is working, the bending control rod 30 can control the jaw body 20 to deflect relative to the shaft body 10 through the rotating seat 21; the specific structure of the pusher blade 40 and how it is connected to the pusher drive inside the jaw body 20 can adopt the conventional method of existing staplers, and will not be elaborated here.

[0052] like Figure 2 , Figure 8 As shown, in some embodiments, the bending control rod 30 is configured as a rigid component; the bending control rod 30 is movably connected to the rotating seat 21 and is used to drive the rotating seat 21 to rotate relative to the connecting piece 11. It should be noted that the bending control rod 30 is configured as a rigid component, specifically, the bending control rod 30 has a certain structural strength. For example, the bending control rod 30 can be configured as a metal component such as a stainless steel plate, so that while the bending control rod 30 moves relative to the shaft body 10, it can drive the rotating seat 21 to drive the jaw body 20 to rotate relative to the shaft body 10.

[0053] like Figure 2 , Figure 8 As shown, exemplarily, one of the bending control rod 30 and the rotating seat 21 is provided with a protrusion 211, and the other has an insertion hole 31. The extending direction of the insertion hole 31 is angled to the pushing direction of the bending control rod 30, and the protrusion 211 is slidably installed in the insertion hole 31. When the bending control rod 30 is pushed, the protrusion 211 slides in the insertion hole 31, so that the rotating seat 21 rotates relative to the connecting piece 11 under the guidance of the insertion hole 31. Of course, in this embodiment, the number of bending control rods 30 in the stapler 100 is two, and the two bending control rods 30 can simultaneously drive the rotating seat 21 to rotate.

[0054] In some embodiments, the protrusion 211 is disposed on the rotating seat 21, for example, the protrusion 211 and the rotating seat 21 are connected as one unit, and the insertion hole 31 is disposed on the bending control rod 30; of course, for those skilled in the art, the protrusion can also be disposed on the rotating seat 21 and the insertion hole can be disposed on the bending control rod 30, which will not be elaborated here.

[0055] like Figure 4 , Figure 6 As shown, in some embodiments, the rigid protective member 50 has an abutment surface 52, and the rotating seat 21 has an abutment mating surface 212. The abutment mating surface 212 abuts against the abutment surface 52 to circumferentially limit the rigid protective member 50 to the rotating seat 21; wherein, both the abutment surface 52 and the abutment mating surface 212 are set as arc-shaped surfaces. It should be noted that the above-mentioned circumferential limitation of the rigid protective member 50 to the rotating seat 21 specifically refers to the rigid protective member 50 being limited to the rotating seat 21 in the opposite direction of rotation when the rotating seat 21 rotates.

[0056] It should be noted that the contact surface 52 can be specifically set as a concave arc surface, while the contact mating surface 212 is set as a convex arc surface. This allows the contact mating surface 212 on the rotating seat 21 to contact the contact surface 52 while the rotating seat 21 is rotating, thereby limiting the rigid protective member 50 in the opposite direction of rotation when the rotating seat 21 is rotating. When the deflected pusher 40 impacts the groove wall 511 of the rigid protective member 50 during the axial force process, the pushing direction is exactly the opposite direction of rotation when the rotating seat 21 is rotating. Therefore, the rigid protective member 50, when it contacts and limits the contact with the rotating seat 21, can protect the deflected pusher 40.

[0057] In some embodiments, there are two abutment surfaces 52; along the thickness direction of the pusher blade 40, the two abutment surfaces 52 are arranged on both sides of the through groove 51, so that the rigid protector 50 can provide follow protection for the pusher blade 40 when it rotates in two opposite directions. In some embodiments, the two abutment surfaces 52 are symmetrically arranged on both sides of the rigid protector 50.

[0058] like Figure 10 As shown, in some embodiments, the through groove 51 includes a first groove 5111 and a second groove 5112, which pass sequentially through the pusher blade 40 along its extension direction. The width of the first groove 5111 gradually decreases towards the second groove 5112. This prevents the groove wall of the first groove 5111 from interfering with the deflection of the pusher blade 40, thus ensuring smooth movement of the pusher blade 40 during deflection. Here, the width of the first groove 5111 refers to the horizontal distance between the two side walls of the first groove 5111.

[0059] like Figure 2 , Figures 8 to 10 As shown, in some embodiments, at least a portion of the rigid protective member 50 extends into the rotary seat 21 at the location of the second groove 5112. This further improves the smoothness of the movement of the pusher blade 40 during rotation. It should be noted that the rotary seat 21 can provide clearance for the portion of the rigid protective member 50 extending into the rotary seat 21, so that the rotary seat 21 does not interfere with the portion of the rigid protective member 50 extending into the rotary seat 21 while rotating.

[0060] In some embodiments, the width of the second groove 5112 remains consistent along the extension direction of the pusher blade 40 toward the rotating seat 21, thereby ensuring that the groove wall 511 of the rigid protector 50 can support and protect the deflected pusher blade 40 when subjected to axial force.

[0061] In some embodiments, there are two rigid protective members 50 and two connecting pieces 11. The two rigid protective members 50 correspond one-to-one with the two connecting pieces 11. The two rigid protective members 50 are independent of each other and are rotatably connected to their respective connecting pieces 11. Along the thickness direction of the connecting piece 11, the two rigid protective members 50 are symmetrically arranged on both sides of the pusher blade 40. In this way, clearance space can be provided for the bending control rod 30.

[0062] like Figure 2 , Figure 8 As shown, in some embodiments, the pusher blade 40 has a curved portion 41, and the pusher blade 40 can be deflected through the curved portion 41. That is, when the jaw body 20 turns relative to the shaft body 10, the jaw body 20 can drive the curved portion 41 on the pusher blade 40 to deflect. The stapler 100 of this embodiment also includes two turning springs 60. Along the thickness direction of the pusher blade 40, the two turning springs 60 are arranged on both sides of the curved portion 41 to protect the curved portion 41. In this way, the turning springs 60 can bend with the rotation of the curved portion 41 on the pusher blade 40, thus achieving flexible support for the curved portion 41 on the pusher blade 40. That is, the two turning springs 60, together with the rigid protective member 50, can achieve double protection for the pusher blade 40 to prevent excessive bending of the curved portion 41 on the pusher blade 40.

[0063] In some embodiments, the two ends of the turning spring 60 are respectively engaged with the shaft body 10 and the jaw body 20; this facilitates the assembly of the turning spring 60 between the shaft body 10 and the jaw body 20. Along the extending direction of the turning spring 60, one end of the turning spring 60 is movably disposed on the corresponding shaft body 10 or the corresponding jaw body 20, so that the turning spring 60 remains engaged between the shaft body 10 and the jaw body 20 during the deflection process following the pusher blade 40. It should be noted that the specific structure of the turning spring 60 can adopt existing conventional methods, which will not be described in detail here.

[0064] like Figure 11 As shown, exemplarily, the turning spring 60 has a first engaging portion 61 and a second engaging portion 62. A first slot 12 is formed on the shaft body 10, and a second slot 22 is formed on the jaw body 20. The first engaging portion 61 can engage with the first slot 12, and the second engaging portion 62 can engage with the second slot 22. This achieves the assembly of the turning spring 60 between the shaft body 10 and the jaw body 20. The length of the first slot 12 is greater than the length of the first engaging portion 61, allowing the first engaging portion 61 to move within the first slot 12 as the turning spring 60 deflects along with the pusher blade 40. Of course, those skilled in the art can also set the length of the second slot 22 to be greater than the length of the second engaging portion 62, which will not be elaborated upon here.

[0065] In summary, when the stapler 100 of this application is in operation, the rotating seat 21 can be driven to rotate on the connecting plate 11 by the bending control rod 30, thereby controlling the deflection of the jaw body 20 relative to the shaft body 10. During this process, the rigid protective member 50 can swing along with the pusher blade 40 on the connecting plate 11 and abut against the rotating seat 21. Afterwards, when the rotating seat 21 rotates a certain angle under the drive of the bending control rod 30 and remains stationary, the rotating seat 21 can circumferentially limit the rigid protective member 50 in the opposite direction of its rotation on the connecting plate 11. This allows the groove wall 511 of the rigid protective member 50 to abut and support the pusher blade 40 when it moves under axial force after deflection, thus protecting the pusher blade 40. Since the rigid protective member 50 of this application rotates along with the rotating seat 21, it does not affect the rotation of the rotating seat 21. Therefore, the jaw body 20 can be turned at a large angle during the operation of the stapler 100, meeting the operating conditions of large-angle rotation.

[0066] The technical features of the above embodiments can be combined in any way. For the sake of brevity, not all possible combinations of the technical features in the above embodiments are described. However, as long as there is no contradiction in the combination of these technical features, they should be considered to be within the scope of this specification.

[0067] Those skilled in the art should recognize that the above embodiments are only used to illustrate this application and are not intended to limit this application. Any appropriate changes and variations made to the above embodiments within the spirit and essence of this application fall within the scope of protection claimed in this application.

Claims

1. An anastomosis device, comprising: The anastomat (100) comprises: A shaft body (10) fixedly connected with a connecting sheet (11); A jaw body (20) fixedly connected with a rotating seat (21) rotationally connected with the connecting sheet (11); A bending control pull rod (30) movably mounted on the shaft body (10) and drivingly connected with the rotating seat (21), the bending control pull rod (30) being used to drive the rotating seat (21) to rotate on the connecting sheet (11) so as to drive the jaw body (20) to deflect relative to the shaft body (10) through the rotating seat (21); A push knife (40) penetrating the rotating seat (21) from the shaft body (10) and drivingly connected with a push knife in the jaw body (20), the push knife (40) being able to deflect with the rotating seat (21); A rigid protection member (50) arranged between the rotating seat (21) and the shaft body (10) and rotationally connected with the connecting sheet (11), the rigid protection member (50) being provided with a through slot (51) for the push knife (40) to penetrate, the rigid protection member (50) being able to deflect with the push knife (40) and abutting against the rotating seat (21) to limit the deflection of the rigid protection member (50); The slot wall (511) of the through slot (51) is able to abut against and support the deflected push knife (40) when the rigid protection member (50) abuts against the rotating seat (21) to limit the deflection, so that the slot wall (511) of the through slot (51) of the rigid protection member (50) is able to support the bent portion (41) of the push knife (40) when the deflected push knife (40) bears an axial force.

2. The anastomat of claim 1, wherein The rigid protection member (50) is formed with an abutting surface (52), the rotating seat (21) is formed with an abutting matching surface (212) abutting with the abutting surface (52) to limit the rigid protection member (50) circumferentially to the rotating seat (21); The abutting surface (52) and the abutting matching surface (212) are both arranged as arc surfaces.

3. The anastomosis device according to claim 2, wherein The number of the abutting surfaces (52) is two, and the two abutting surfaces (52) are arranged on both sides of the through slot (51) along the thickness direction of the push knife (40).

4. The anastomat of claim 1 wherein, The through slot (51) comprises a first slot (5111) and a second slot (5112) in communication with each other, the push knife (40) penetrating the first slot (5111) and the second slot (5112) in sequence along the extension direction of the push knife (40); The slot width of the first slot (5111) gradually decreases towards the second slot (5112).

5. The anastomat of claim 4 wherein, At least part of the rigid protection member (50) at the position of the second slot (5112) extends into the rotating seat (21).

6. The anastomat of claim 5 wherein, The slot width of the second slot (5112) remains unchanged along the extension direction of the push knife (40).

7. The anastomat of claim 1 wherein, The number of the rigid protection pieces (50) is two, the number of the connecting pieces (11) is two, two rigid protection pieces (50) correspond to two connecting pieces (11) respectively, two rigid protection pieces (50) are independently connected with the corresponding connecting pieces (11) respectively, and two rigid protection pieces (50) are symmetrically arranged on the two sides of the push blade (40).

8. The anastomat of claim 1 wherein, The push blade (40) has a bending part (41), and the push blade (40) can be deflected through the bending part (41); The anastomat (100) further comprises two turning elastic pieces (60), and the two turning elastic pieces (60) are arranged on the two sides of the bending part (41) along the thickness direction of the push blade (40) and used for protecting the bending part (41).

9. The anastomat of claim 8 wherein, The two side ends of the turning elastic piece (60) are respectively connected with the shaft body (10) and the jaw body (20) in a clamping manner; Along the extension direction of the turning elastic piece (60), one side end of the turning elastic piece (60) is movably arranged on the corresponding shaft body (10) or the corresponding jaw body (20).

10. The anastomat of claim 1 wherein, The bending control pull rod (30) is arranged as a rigid piece; The bending control pull rod (30) is movably connected with the rotating seat (21) and used for driving the rotating seat (21) to rotate relative to the connecting piece (11).

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