Anastomat

Abstract

The anastomat comprises a shaft main body, a jaw main body, a bending control pull rod, a push blade and a rigid protection piece, the shaft main body is fixedly connected with a connecting piece, the jaw main body is fixedly connected with a rotating seat, and the rotating seat is rotationally connected with the connecting piece; the bending control pull rod drives the jaw main body to deflect relative to the shaft main body through the rotating seat; the push blade can deflect along with the rotating seat; the rigid protection piece is arranged between the rotating seat and the shaft main body and is rotationally connected with the connecting piece, a through groove is formed in the rigid protection piece, the push blade can penetrate through the through groove, the rigid protection piece can deflect along with the push blade, and the rigid protection piece and the rotating seat are made to abut against each other for limiting; the groove wall of the through groove can abut against and support the deflected push blade when the rigid protection piece abuts against and limits. Thus, the following protection effect of the rigid protection piece on the push blade can be achieved, in the process, the rigid protection piece cannot affect deflection of the jaw body, and therefore large-angle turning of the jaw body can be achieved when the anastomat works.

Description

Technical Field

[0001] The present application belongs to the technical field related to medical devices, and in particular, relates to a stapler. Background Art

[0002] The stapler is a medical device that replaces manual suturing. Its main working principle is to use titanium nails to sever or staple tissues, similar to a stapler. When the stapler is working, the push blade needs to withstand an axial force of up to 600N. Since the front end of the push blade is subject to the resistance of the push nails and the rear end is subject to the triggering force of the transmission shaft, combined with the fact that the push blade itself is a flexible structure, when the push blade is subjected to excessive axial force, it is easy for the push blade to bend at the turning joint. In severe cases, it may even cause the push blade to fold, making it impossible to advance and retract the blade, and cause serious failure of the stapler. In particular, after the jaws are deflected at a large angle, the loss of triggering force at the joint is very large, which can easily cause the push blade to excessively arch outward and deform at the joint. Summary of the invention

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

[0004] A stapler, comprising:

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

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

[0007] A bending control rod, movably mounted on the shaft body and drivingly connected to the rotating seat, 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] A push blade, passing through the rotating seat from the shaft body and being drivingly connected to the push blade in the jaw body, and the push blade can deflect along with the rotating seat;

[0009] A rigid protection member is disposed between the rotating seat and the shaft body and is rotatably connected to the connecting piece. A through slot is provided on the rigid protection member, and the through slot is used for the push blade to pass through. The rigid protection member can deflect with the push blade and abut against the rotating seat to limit the position.

[0010] Wherein, the groove wall of the through groove can support the deflected push blade when the rigid protective member abuts and limits.

[0011] It is understandable that in the present application, the rigid protective member follows the push blade to rotate on the connecting piece, and the rigid protective member and the rotating seat are used to abut and limit the push blade. In this way, the rigid protective member can follow the push blade and protect it. In this process, the rigid protective member will not affect the deflection of the jaw body, so that the jaw body can turn at a large angle when the stapler is working, and meet the use conditions of large-angle rotation.

[0012] In one embodiment, an abutment surface is formed on the rigid protection member, and an abutment mating surface is formed on the rotating seat, and the abutment mating surface abuts against the abutment surface to limit the rigid protection member circumferentially to the rotating seat;

[0013] Wherein, the abutting surface and the abutting matching surface are both configured as arc-shaped surfaces.

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

[0015] It can be understood that two abutting surfaces are used to abut the rotating seat respectively, so that the rigid protection member can provide follow-up protection for the push blade when it deflects in two opposite directions.

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

[0017] Wherein, the width of the first groove gradually decreases toward the second groove.

[0018] It can be understood that the width of the first groove is gradually reduced toward the rotating seat, so that the smoothness of the movement of the push blade when it is deflected can be ensured.

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

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

[0021] In one embodiment, the number of the rigid protection members is two, the number of the connecting plates is two, the two rigid protection members correspond to the two connecting plates one by one, and the two rigid protection members are independent of each other and are rotatably connected to the corresponding connecting plates respectively;

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

[0023] It can be understood that two independent rigid protection members are used to simultaneously protect the push blade from rotation, thereby providing an escape space for the bending control rod.

[0024] In one embodiment, the push blade has a curved portion, and the push blade can be deflected by the curved portion;

[0025] The stapler further comprises two turning spring sheets, which are arranged on both sides of the bending portion along the thickness direction of the push blade to protect the bending portion.

[0026] It can be understood that by placing the turning spring sheet against the curved portion of the push blade, the turning spring sheet can bend along with the rotation of the curved portion on the push blade, thereby achieving flexible support for the curved portion on the push blade to prevent excessive bending of the curved portion.

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

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

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

[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, the present application has the following advantages compared with the prior art:

[0032] The stapler for which protection is requested in the present application has a rigid protective member that follows the push blade and rotates on the connecting plate, and utilizes the abutment limit between the rigid protective member and the rotating seat to achieve the abutment support of the rigid protective member on the deflected push blade. In this way, the rigid protective member can achieve the following protection effect on the push blade, and in this process, the rigid protective member will not affect the deflection of the jaw body, so that the jaw body can turn at a large angle when the stapler is working and meet the use conditions of large-angle rotation. BRIEF DESCRIPTION OF THE DRAWINGS

[0033] In order to more clearly illustrate the technical solutions in the embodiments of the present application or the conventional technology, the drawings required for use in the embodiments or the conventional technology descriptions are briefly introduced below. Obviously, the drawings described below are only some embodiments of the present application. For ordinary technicians in this field, other drawings can be obtained based on these drawings without creative work.

[0034] Figure 1 A schematic diagram of a partial structure of a stapler provided in one embodiment of the present application;

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

[0036] Figure 3 A schematic diagram of a partial structure of a stapler provided in one embodiment of the present application;

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

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

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

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

[0041] Figure 8 for Figure 7 Enlarged view of the middle D part;

[0042] Fig. 9 A schematic diagram of the structure of a rigid protective member provided in one embodiment of the present application;

[0043] Fig.10 A structural schematic diagram of a rigid protective member provided by an embodiment of the present application from another perspective;

[0044] Fig.11 This is a schematic diagram of the structure of the turning spring provided in one embodiment of the present application when 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, boss; 212, abutment surface; 22, second slot; 30, bending control rod; 31, socket; 40, push blade; 41, bending portion; 50, rigid protective member; 51, through slot; 511, slot wall; 5111, first slot; 5112, second slot; 52, abutment surface; 60, turning spring piece; 61, first clamping portion; 62, second clamping portion. DETAILED DESCRIPTION

[0046] The following will be combined with the drawings in the embodiments of the present application to clearly and completely describe the technical solutions in the embodiments of the present application. Obviously, the described embodiments are only part of the embodiments of the present application, not all of the embodiments. Based on the embodiments in the present application, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of this application.

[0047] It should be noted that when an element is referred to as being "provided on" another element, it may be directly provided on the other element or there may be a central element. When an element is considered to be "provided on" another element, it may be directly provided on the other element or there may be a central element at the same time. When an element is considered to be "fixed to" another element, it may be directly fixed to the other element or there may be a central element at the same time.

[0048] Unless otherwise defined, all technical and scientific terms used herein have the same meaning as those commonly understood by those skilled in the art to which this application belongs. The terms used in the specification of this application are only for the purpose of describing specific embodiments and are not intended to limit this application. The term "and / or" used herein includes any and all combinations of one or more related listed items.

[0049] like Figures 1 to 9 As shown, the stapler 100 provided in one embodiment of the present application includes a shaft body 10, a jaw body 20, a bending control rod 30, a push blade 40 and a rigid protective member 50. The shaft body 10 is fixedly connected with a connecting piece 11, and the jaw body 20 is fixedly connected with a rotating seat 21, and 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 transmission-connected to the rotating seat 21, and the bending control rod 30 is used to drive the rotating seat 21 to rotate on the connecting piece 11, so as to drive the jaw body 20 to deflect relative to the shaft body 10 through the rotating seat 21; the push blade 40 passes through the rotating seat 21 from the shaft body 10 and is transmission-connected to the push blade (not shown) in the jaw body 20, and The push blade 40 can deflect with the rotating seat 21; the rigid protection member 50 is arranged between the rotating seat 21 and the shaft body 10 and is rotatably connected with the connecting piece 11. A through slot 51 is provided on the rigid protection member 50, and the through slot 51 is used for the push blade 40 to pass through. The rigid protection member 50 can deflect with the push blade 40 and make the rigid protection member 50 abut against the rotating seat 21 to limit the position; wherein the groove wall 511 of the through slot 51 can abut against and support the deflected push blade 40 when the rigid protection member 50 abuts against the limit position. That is to say, the rigid protection member 50 of the present application is independent of the rotating seat 21 and is respectively hinged to the connecting piece 11.

[0050] It can be understood that the rigid protective member 50 can follow the push blade 40 to rotate on the connecting piece 11, and use the abutment limit between the rigid protective member 50 and the rotating seat 21 to achieve the abutment support of the rigid protective member 50 on the deflected push blade 40, so that when the deflected push blade 40 is subjected to axial force, the groove wall 511 of the through groove 51 on the rigid protective member 50 can be used to support the curved portion 41 of the push blade 40, and the push blade 40 can be protected to prevent the curved portion 41 of the push blade 40 from excessive bending; in this way, the rigid protective member 50 can achieve the follow-up protection of the push blade 40, and in this process, the rigid protective member 50 will not affect the deflection of the jaw body 20, so that the jaw body 20 can turn at a large angle when the anastomosis device 100 is working, and meet the use 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; wherein, the specific structure of the push blade 40 and how it is connected to the push blade transmission in the jaw body 20 can adopt the conventional method of the existing stapler, which 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 member; 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 member, specifically, the bending control rod 30 has a certain structural strength, for example, the bending control rod 30 can be configured as a metal member such as a stainless steel plate, so that the bending control rod 30 can drive the rotating seat 21 to drive the jaw body 20 to rotate relative to the shaft body 10 while moving relative to the shaft body 10.

[0053] like Figure 2 , Figure 8 As shown, illustratively, one of the bending control rod 30 and the rotating seat 21 is provided with a convex column 211, and the other is provided with a plug hole 31, the extension direction of the plug hole 31 is set at an angle with the pushing direction of the bending control rod 30, and the convex column 211 is slidably installed in the plug hole 31; when the bending control rod 30 is pushed, the convex column 211 slides in the plug hole 31, so that the rotating seat 21 rotates relative to the connecting piece 11 under the guidance of the plug hole 31. Of course, the number of the bending control rods 30 in the stapler 100 of this embodiment is two, and the two bending control rods 30 can drive the rotating seat 21 to rotate at the same time.

[0054] In some embodiments, the boss 211 is disposed on the rotating seat 21, for example, the boss 211 is connected to the rotating seat 21 as a whole, and the socket 31 is disposed on the bending control rod 30; of course, for those skilled in the art, the boss can also be disposed on the rotating seat 21, and the socket 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, a contact surface 52 is formed on the rigid protection member 50, and a contact mating surface 212 is formed on the rotating seat 21, and the contact mating surface 212 contacts the contact surface 52 to limit the rigid protection member 50 circumferentially to the rotating seat 21; wherein the contact surface 52 and the contact mating surface 212 are both configured as arc-shaped surfaces. It should be noted that the above-mentioned rigid protection member 50 is circumferentially limited to the rotating seat 21, specifically, the rigid protection member 50 is 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 abutment surface 52 can be specifically set as an inwardly concave arc surface, and the abutment mating surface 212 can be set as an outwardly convex arc surface, so that when the rotating seat 21 rotates, the abutment mating surface 212 on the rotating seat 21 and the abutment surface 52 can be abutted against each other, so as to limit the rigid protection member 50 in the opposite direction of rotation when the rotating seat 21 rotates. When the deflected push blade 40 impacts the groove wall 511 on the rigid protection member 50 in the process of bearing axial force, the pushing direction is just opposite to the rotation direction of the rotating seat 21 when the rotating seat 21 rotates. Therefore, the rigid protection member 50 when it is abutted and limited with the rotating seat 21 can protect the deflected push blade 40.

[0057] In some embodiments, there are two abutment surfaces 52; along the thickness direction of the push blade 40, the two abutment surfaces 52 are arranged on both sides of the through slot 51, so that the rigid protection member 50 can follow and protect the push 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 protection member 50.

[0058] like Fig.10 As shown, in some embodiments, the through groove 51 includes a first groove 5111 and a second groove 5112. Along the extension direction of the push blade 40, the push blade 40 sequentially passes through the first groove 5111 and the second groove 5112; wherein the groove width of the first groove 5111 gradually decreases toward the direction of the second groove 5112, so that the groove wall of the first groove 5111 can be prevented from causing position interference to the deflection of the push blade 40, thereby ensuring the smoothness of the movement of the push blade 40 when it deflects. Here, the groove 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 part of the rigid protection member 50 at the location of the second groove 5112 extends into the rotating seat 21. In this way, the smoothness of the movement of the push blade 40 when rotating can be further improved. It should be noted that the rotating seat 21 can provide an escape space for the part of the rigid protection member 50 extending into the rotating seat 21, so that the rotating seat 21 interferes with the part of the rigid protection member 50 extending into the rotating seat 21 while rotating.

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

[0061] In some embodiments, there are two rigid protection members 50 and two connecting pieces 11, and the two rigid protection members 50 correspond to the two connecting pieces 11 one by one. The two rigid protection members 50 are independent of each other and are rotatably connected to the corresponding connecting pieces 11 respectively; along the thickness direction of the connecting piece 11, the two rigid protection members 50 are symmetrically arranged on both sides of the push blade 40. In this way, an avoidance space can be provided for the bending control rod 30.

[0062] like Figure 2 , Figure 8 As shown, in some embodiments, the push blade 40 has a curved portion 41, and the push 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 push blade 40 to deflect. The stapler 100 of this embodiment also includes two turning springs 60, which are arranged on both sides of the curved portion 41 along the thickness direction of the push blade 40 to protect the curved portion 41. In this way, the turning spring 60 can bend along with the rotation of the curved portion 41 on the push blade 40, so that the flexible support of the curved portion 41 on the push blade 40 can be achieved, that is, the two turning springs 60 can achieve double protection of the push blade 40 together with the rigid protective member 50 to prevent the curved portion 41 on the push blade 40 from excessive bending.

[0063] In some embodiments, the two side ends of the turning spring piece 60 are respectively engaged with the shaft body 10 and the jaw body 20; in this way, the turning spring piece 60 can be easily assembled between the shaft body 10 and the jaw body 20. Along the extension direction of the turning spring piece 60, one side end of the turning spring piece 60 is movably arranged on the corresponding shaft body 10 or the corresponding jaw body 20, so that the turning spring piece 60 always remains engaged between the shaft body 10 and the jaw body 20 during the process of the turning spring piece 60 following the deflection of the push blade 40. It should be noted that the specific structure of the turning spring piece 60 can adopt the existing conventional method, which will not be elaborated here.

[0064] like Fig.11 As shown, exemplarily, the turning spring piece 60 has a first clamping portion 61 and a second clamping portion 62, the shaft body 10 is provided with a first clamping slot 12, the jaw body 20 is provided with a second clamping slot 22, the first clamping portion 61 can be clamped and matched with the first clamping slot 12, and the second clamping portion 62 can be clamped and matched with the second clamping slot 22. In this way, the turning spring piece 60 is assembled between the shaft body 10 and the jaw body 20. Among them, the slot length of the first clamping slot 12 is greater than the length of the first clamping portion 61, so that the first clamping portion 61 can move along the turning spring piece 60 in the first clamping slot 12 when the push blade 40 deflects. Of course, for those skilled in the art, the slot length of the second clamping slot 22 can also be set to be greater than the length of the second clamping portion 62, which will not be elaborated here.

[0065] In summary, when the stapler 100 of the present application is working, the bending control rod 30 can be used to drive the rotating seat 21 to rotate on the connecting piece 11, and realize the control of the jaw body 20 to deflect relative to the shaft body 10. In this process, the rigid protection member 50 can follow the push blade 40 to swing on the connecting piece 11 and abut against the rotating seat 21. Afterwards, when the rotating seat 21 rotates a certain angle driven by the bending control rod 30 and remains stationary, the rotating seat 21 can circumferentially limit the rigid protection member 50 in the opposite direction of the rotation on the connecting piece 11, so that the groove wall 511 on the rigid protection member 50 can support the push blade 40 after the deflection when it moves after being subjected to the axial force, that is, it plays a role in protecting the push blade 40. Since the rigid protection member 50 of the present application rotates with the rotating seat 21, it will not affect the rotation of the rotating seat 21. Therefore, when the stapler 100 is working, the jaw body 20 can turn at a large angle and meet the use conditions of large-angle rotation.

[0066] The technical features of the above embodiments may be arbitrarily combined. To make the description concise, 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 the present application and are not used as limitations on the present application. As long as they are within the spirit of the present application, appropriate changes and modifications to the above embodiments are within the scope of protection required by the present application.

Claims

1. A stapler, characterized in that: The stapler (100) comprises: The shaft body (10) is fixedly connected with a connecting piece (11); The jaw body (20) is fixedly connected with a rotating seat (21), and the rotating seat (21) is rotatably connected to the connecting piece (11); A bending control rod (30) is movably mounted on the shaft body (10) and is in driving connection with the rotating seat (21), wherein the bending control rod (30) is used to drive the rotating seat (21) to rotate on the connecting piece (11), so as to drive the jaw body (20) to deflect relative to the shaft body (10) through the rotating seat (21); A push blade (40) passes through the rotating seat (21) from the shaft body (10) and is drivingly connected to the push blade in the jaw body (20), and the push blade (40) can deflect along with the rotating seat (21); a rigid protective member (50) disposed between the rotating seat (21) and the shaft body (10) and rotatably connected to the connecting piece (11); a through slot (51) is provided on the rigid protective member (50); the through slot (51) is used for the push blade (40) to pass through; and the rigid protective member (50) can deflect along with the push blade (40) and make the rigid protective member (50) abut against the rotating seat (21) to limit the position; The groove wall (511) of the through groove (51) can support the deflected push blade (40) when the rigid protection member (50) is in abutment and limiting position.

2. The stapler according to claim 1, characterized in that: The rigid protection member (50) is formed with an abutment surface (52), and the rotating seat (21) is formed with an abutment matching surface (212), and the abutment matching surface (212) abuts against the abutment surface (52) to limit the rigid protection member (50) circumferentially to the rotating seat (21); Wherein, the abutting surface (52) and the abutting matching surface (212) are both configured as arc-shaped surfaces.

3. The stapler according to claim 2, characterized in that: The number of the abutment surfaces (52) is two; along the thickness direction of the push blade (40), the two abutment surfaces (52) are arranged on both sides of the through groove (51).

4. The stapler according to claim 1, characterized in that: The through groove (51) comprises a first groove (5111) and a second groove (5112) which are connected to each other, and along the extension direction of the push blade (40), the push blade (40) passes through the first groove (5111) and the second groove (5112) in sequence; Wherein, the width of the first groove (5111) gradually decreases toward the second groove (5112).

5. The stapler according to claim 4, characterized in that: At least a portion of the rigid protection member (50) at the location of the second groove (5112) extends into the rotating seat (21).

6. The stapler according to claim 5, characterized in that: Along the extension direction of the push blade (40), the width of the second groove (5112) remains consistent.

7. The stapler according to claim 1, characterized in that: The number of the rigid protection members (50) is two, the number of the connecting plates (11) is two, the two rigid protection members (50) correspond to the two connecting plates (11) one by one, the two rigid protection members (50) are independent of each other and are rotatably connected to the corresponding connecting plates (11) respectively; and the two rigid protection members (50) are symmetrically arranged on both sides of the push blade (40).

8. The stapler according to claim 1, characterized in that: The push blade (40) has a curved portion (41), and the push blade (40) can be deflected by the curved portion (41); The stapler (100) further comprises two turning spring sheets (60), which are arranged on both sides of the bending portion (41) along the thickness direction of the push blade (40) to protect the bending portion (41).

9. The stapler according to claim 8, characterized in that: The two side ends of the turning spring piece (60) are respectively engaged with the shaft body (10) and the jaw body (20); Along the extension direction of the turning spring piece (60), one end portion of the turning spring piece (60) is movably arranged on the corresponding shaft body (10) or the corresponding jaw body (20).

10. The stapler according to claim 1, characterized in that: The bending control rod (30) is configured as a rigid part; 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 plate (11).

Images