Safety firing anastomat

Abstract

The application discloses a safe firing anastomat and belongs to the technical field of medical devices. The safe firing anastomat further comprises a hook piece, a limiting boss is arranged on the mounting section, the bending direction of the first arc-shaped section is opposite to the bending direction of the second arc-shaped section, the mounting section is arranged on the firing handle and can swing along with the firing handle; the fixed handle is fixedly arranged on the anastomat main body and located on the swing track line of the hook piece, the fixed handle has a containing cavity, the first opening and the second opening are arranged on the fixed handle and in communication with the containing cavity, the first retreat-stop platform is arranged on the inner bottom wall of the fixed handle and close to the first opening, the guide strip-shaped part is arranged on the inner side wall of the fixed handle and close to the second opening, and the outer side surface of the guide strip-shaped part and the inner side wall of the fixed handle surround to form the handle reset sliding groove. The firing handle can be reset only after the firing handle is gripped in place, and the success rate of operation is improved.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of medical devices, in particular to a safe firing anastomat. BACKGROUND

[0002] The tube anastomat is a medical device specially used for digestive tract reconstruction surgery, which can quickly and accurately anastomose two segments of digestive tract lumen by mechanical means. The anastomat usually has a streamlined design, is easy to operate with one hand, and has various specifications to adapt to different diameters of the lumen.

[0003] The tube anastomat has been used in clinical practice for a long time, but there are cases of surgical failure due to the firing handle not being completely held in place during the operation.

[0004] Therefore, it is urgent to provide a safe firing anastomat to solve the above problems. SUMMARY

[0005] The purpose of the present application is to provide a safe firing anastomat, which must be held in place before the firing handle can be reset during clinical use, thereby improving the success rate of the operation.

[0006] To achieve the above purpose, the following technical solutions are provided:

[0007] The safe firing anastomat comprises an anastomat main body and a firing handle, the firing handle is rotatably arranged on the anastomat main body, and the safe firing anastomat further comprises:

[0008] A hook member, the hook member comprises an installation section, a first arc section and a second arc section connected in sequence, a limiting boss is arranged on the installation section, the bending direction of the first arc section is opposite to the bending direction of the second arc section, and the installation section is arranged on the firing handle and can swing with the firing handle;

[0009] A fixed handle is fixedly arranged on the anastomat main body and located on the swing track line of the hook member, the fixed handle has a receiving cavity, the fixed handle is provided with a first opening and a second opening, the first opening and the second opening are in communication with the receiving cavity, a first retreat-stop platform is arranged on the inner bottom wall of the fixed handle and close to the first opening, a guide strip-shaped part is arranged on the inner side wall of the fixed handle and close to the second opening, and the outer side surface of the guide strip-shaped part and the inner side wall of the fixed handle form a handle reset sliding groove;

[0010] The hook piece is configured to move along a self-swinging track line during the firing of the firing handle, the limiting boss slides along the inner side surface of the guide strip-shaped part, the second arc-shaped segment is deformed after abutting against the first retreat-stop platform and enters the accommodating cavity, the limiting boss enters the handle reset sliding groove after the firing handle is fired, and the hook piece is separated from the fixed handle.

[0011] As an optional solution of the safety firing anastomat, the extending direction of the guide strip-shaped part gradually inclines from the second opening to the inner bottom wall of the fixed handle.

[0012] As an optional solution of the safety firing anastomat, the surface of the limiting boss is provided with a first inclined surface, the inner side surface of the guide strip-shaped part is provided with a second inclined surface near the first opening, and the first inclined surface slides along the second inclined surface and enters the accommodating cavity of the fixed handle.

[0013] As an optional solution of the safety firing anastomat, the surface of the limiting boss is provided with a third inclined surface, the outer side surface of the guide strip-shaped part is provided with a fourth inclined surface near the second opening, and the third inclined surface slides along the fourth inclined surface and enters the handle reset sliding groove.

[0014] As an optional solution of the safety firing anastomat, the two opposite inner side walls of the fixed handle are both provided with the guide strip-shaped part, the two opposite outer side walls of the mounting segment are both provided with the limiting boss, and the guide strip-shaped part and the limiting boss are one-to-one correspondingly arranged.

[0015] As an optional solution of the safety firing anastomat, the inner bottom wall of the fixed handle is provided with a second retreat-stop platform away from the first opening, the second retreat-stop platform is arranged in a spaced manner with the first retreat-stop platform, and a plurality of retreat-stop teeth are arranged on the second retreat-stop platform.

[0016] As an optional solution of the safety firing anastomat, the safety firing anastomat further comprises a pin shaft, and the firing handle is rotationally connected with the anastomat body through the pin shaft.

[0017] As an optional solution of the safety firing anastomat, the firing handle is provided with a pushing part, and the pin shaft is located between the pushing part and the hook piece.

[0018] As an optional solution of the safety firing anastomat, the tail part of the firing handle is provided with a connecting arm, and the mounting segment is arranged on the connecting arm.

[0019] As an optional solution of the safety firing anastomat, the surface of the firing handle is provided with an anti-skid structure.

[0020] Compared with the prior art, the safety firing anastomat has the following beneficial effects:

[0021] The safety firing anastomat provided by the application is characterized in that the firing handle is rotatably connected with the anastomat body, the fixed handle is fixedly connected with the anastomat body, a hook element is arranged on the firing handle of the instrument, the hook element contacts the first retreat-stop platform on the fixed handle when firing, at this time, the firing handle is released and is limited and cannot be reset, the firing handle is continuously gripped, and the hook element continuously moves along the swing track line to the fixed handle. Meanwhile, the hook element is provided with a limiting boss which abuts against the inner side surface of the guide strip-shaped part to prevent the hook from falling off from the second opening. When the firing handle is fired to the bottom, the limiting platform is pushed into the handle reset sliding groove through the deformation of the hook element, at this time, the firing handle is released, and the instrument can be normally reset. BRIEF DESCRIPTION OF DRAWINGS

[0022] In order to more clearly illustrate the technical solutions in the embodiments of the present application, the drawings needed to be used in the description of the embodiments of the present application will be briefly introduced. Obviously, the drawings in the following description are only some embodiments of the present application, and other drawings can be obtained by those skilled in the art without any creative effort on the basis of the contents of the embodiments of the present application and the drawings.

[0023] Figure 1 It is an assembly schematic view of the safety firing anastomat in the embodiments of the present application.

[0024] Figure 2 It is a structure schematic view of the firing handle with a hook element in the embodiments of the present application.

[0025] Figure 3 It is a local enlarged view of the tail part of the firing handle in the embodiments of the present application.

[0026] Figure 4 It is a structure schematic view of the first view angle of the fixed handle in the embodiments of the present application.

[0027] Figure 5 It is a structure schematic view of the second view angle of the fixed handle in the embodiments of the present application.

[0028] Figure 6 It is a sectional view of the safety firing anastomat in the embodiments of the present application in a pre-firing state.

[0029] Figure 7 It is a sectional view of the safety firing anastomat in the embodiments of the present application in a firing state.

[0030] Figure 8 It is a sectional view of the safety firing anastomat in the embodiments of the present application in a post-firing state.

[0031] Reference signs:

[0032] 1, anastomat main body; 2, firing handle; 3, hook piece; 4, fixed handle; 5, pin shaft; 6, safety block;

[0033] 21, connecting arm;

[0034] 31, mounting section; 32, first arc section; 33, second arc section; 34, limiting boss; 341, first inclined surface; 342, third inclined surface;

[0035] 41, accommodating cavity; 42, first opening; 43, second opening; 44, first retreat-stop platform; 45, guide strip-shaped part; 451, outer side surface; 452, inner side surface; 453, second inclined surface; 454, fourth inclined surface; 46, handle reset sliding groove; 47, second retreat-stop platform; 471, retreat-stop tooth. DETAILED DESCRIPTION

[0036] In order to make the objects, technical solutions and advantages of the embodiments of the present application clearer, the technical solutions in the embodiments of the present application will be described clearly and completely below with reference to the drawings in the embodiments of the present application. Obviously, the described embodiments are some but not all of the embodiments of the present application. The components of the embodiments of the present application described and shown in the drawings herein can be arranged and designed in various different configurations.

[0037] In the description of the present application, it should be noted that the terms "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer" and the like indicate the orientation or positional relationship based on the orientation or positional relationship shown in the drawings, or the orientation or positional relationship commonly placed when the product of the present application is used, and are only for the convenience of describing the present application and simplifying the description, and therefore cannot be understood as indicating or implying that the indicated device or element must have a particular orientation, be constructed and operated in a particular orientation, and therefore cannot be understood as limiting the present application. In addition, the terms "first", "second", "third" and the like are only used to distinguish the description and cannot be understood as indicating or implying relative importance. In the description of the present application, unless otherwise specified, the meaning of "a plurality of" is two or more.

[0038] In the description of the present application, it should also be noted that, unless otherwise specified and limited, the terms "provided", "connected" should be understood broadly, for example, it can be fixedly connected, or it can be detachably connected, or integrally connected; it can be mechanically connected, or it can be electrically connected. For those skilled in the art, the specific meaning of the above terms in the present application can be understood according to the specific circumstances.

[0039] Embodiments of the present application are described below in detail with reference to the accompanying drawings, wherein the same or similar components or components having the same or similar functions are denoted by the same or similar reference numerals throughout the drawings. The embodiments described below with reference to the accompanying drawings are exemplary and are only used to explain the present application and cannot be understood as a limitation of the present application.

[0040] In order to improve the success rate of surgery, the firing handle must be held in place before it can be reset, the present embodiment provides a safety firing anastomat, which is described below in combination with Figures 1 to 8 The specific content of the present embodiment is described in detail.

[0041] The safety firing anastomat in the present embodiment comprises an anastomat body 1, a safety block 6, a firing handle 2, a hook piece 3 and a fixed handle 4. The firing handle 2 is rotatably arranged on the anastomat body 1. The safety block 6 is rotatably connected with the anastomat body 1, and the safety block 6 is located between the firing handle 2 and the fixed handle 4. The hook piece 3 comprises a mounting segment 31, a first arc segment 32 and a second arc segment 33 connected in sequence, a limiting boss 34 is arranged on the mounting segment 31, the bending direction of the first arc segment 32 is opposite to that of the second arc segment 33, and the mounting segment 31 is arranged on the firing handle 2 and can swing with the firing handle 2. The fixed handle 4 is fixedly arranged on the anastomat body 1 and located on the swing track line of the hook piece 3, the fixed handle 4 has a receiving cavity 41, the fixed handle 4 is provided with a first opening 42 and a second opening 43, the first opening 42 and the second opening 43 are both in communication with the receiving cavity 41, a first stop platform 44 is arranged on the inner bottom wall of the fixed handle 4 and close to the first opening 42, a guide strip part 45 is arranged on the inner side wall of the fixed handle 4 and close to the second opening 43, and the outer side surface 451 of the guide strip part 45 and the inner side wall of the fixed handle 4 form a handle reset sliding groove 46. The hook piece 3 is configured as follows: during the firing process of the firing handle 2, the hook piece 3 moves along its own swing track line, the limiting boss 34 slides along the inner side surface 452 of the guide strip part 45, the second arc segment 33 is deformed after abutting against the first stop platform 44 and enters the receiving cavity 41, after the firing handle 2 completes firing, the limiting boss 34 enters the handle reset sliding groove 46, and the hook piece 3 is separated from the fixed handle 4.

[0042] In summary, the safety-firing stapler provided by this invention has a firing handle 2 rotatably connected to the stapler body 1, and a fixed handle 4 fixedly connected to the stapler body 1. A hook 3 is provided on the firing handle 2. When firing, the hook 3 contacts the first anti-return platform 44 on the fixed handle 4. At this point, releasing the firing handle 2 will limit its movement, preventing it from returning to its original position. Continuing to hold the firing handle 2 will cause the hook 3 to continue moving along its swing trajectory towards the fixed handle 4. Simultaneously, the hook 3 has a limiting protrusion 34 that abuts against the inner side 452 of the guide strip 45, preventing the hook from falling off from the second opening 43. When the firing handle 2 is fully fired, the limiting platform is pushed into the handle return groove 46 by the deformation of the hook 3. Releasing the firing handle 2 at this point allows the device to return to its original position normally.

[0043] Optionally, the total width of the first arc segment 32 and the second arc segment 33 is greater than the distance between the guide strip 45 and the inner bottom wall of the fixed handle 4. When the hook 3 enters the fixed handle 4, the hook 3 is always in a deformed state. The limiting boss 34 of the hook 3 is blocked by the guide strip 45, ensuring that the firing handle 2 will not be at risk of the hook 3 separating from the fixed handle 4 during firing.

[0044] Furthermore, such as Figures 5 to 8 As shown, the extension direction of the guide bar 45 gradually slopes towards the inner bottom wall of the fixed handle 4 from the second opening 43. By setting the guide bar 45 in a rightward tilt, the mounting section 31 of the hook 3 can be deflected to the right and elastically deformed during firing. When the firing handle 2 is fully gripped and firing is completed, the hook 3 is stopped by the guide bar 45, and the mounting section 31 of the hook 3 can be deflected to the left and reset under the action of the elastic deformation restoring force and enter the handle reset groove 46.

[0045] Furthermore, the surface of the limiting boss 34 is provided with a first inclined surface 341, and the inner side surface 452 of the guide strip portion 45 is provided with a second inclined surface 453 near the first opening 42. The first inclined surface 341 slides into the receiving cavity 41 of the fixed handle 4 along the second inclined surface 453. The first inclined surface 341 and the second inclined surface 453 have the same inclination direction. By adding the first inclined surface 341 and the second inclined surface 453, it is convenient to guide the limiting boss 34 of the hook member 3 into the receiving cavity 41 of the fixed handle 4.

[0046] Further, the surface of the limiting boss 34 is provided with a third inclined surface 342, the outer side surface 451 of the guide strip-shaped part 45 is provided with a fourth inclined surface 454 near the second opening 43, and the third inclined surface 342 slides along the fourth inclined surface 454 into the handle reset sliding groove 46. The third inclined surface 342 and the fourth inclined surface 454 have the same inclination direction, and the third inclined surface 342 and the fourth inclined surface 454 facilitate guiding the limiting boss 34 of the hook piece 3 into the handle reset sliding groove 46.

[0047] Optionally, the two inner side walls opposite to each other of the fixed handle 4 are provided with the guide strip-shaped part 45, the two outer side walls opposite to each other of the mounting section 31 are provided with the limiting boss 34, and the guide strip-shaped part 45 and the limiting boss 34 are provided in one-to-one correspondence. By providing the limiting boss 34 on both sides of the mounting section 31, each limiting boss 34 slides along the corresponding guide strip-shaped part 45 during the firing process.

[0048] Further, the inner bottom wall of the fixed handle 4 and away from the first opening 42 is provided with a second retreat-stop platform 47, the second retreat-stop platform 47 is provided in a spaced manner with the first retreat-stop platform 44, and the second retreat-stop platform 47 is provided with a plurality of retreat-stop teeth 471. With the depth of the hook piece 3 into the accommodating cavity 41, the second arc-shaped section 33 cooperates with the plurality of retreat-stop teeth 471 to meet the firing demand of multiple gears of the firing handle 2.

[0049] Further, the safety firing anastomat further comprises a pin shaft 5, and the firing handle 2 is rotationally connected with the anastomat main body 1 through the pin shaft 5. By additionally providing the pin shaft 5, the rotation of the firing handle 2 can be realized under the condition of holding. Further, by additionally providing a reset torsional spring on the pin shaft 5, the automatic reset of the firing handle 2 after firing is realized.

[0050] Further, the firing handle 2 is provided with a pushing part, and the pin shaft 5 is located between the pushing part and the hook piece 3. The pushing part is located at the end of the firing handle 2 away from the hook piece 3, and the pushing part is used for firing the nail clip assembly in the anastomat main body 1.

[0051] Optionally, a connecting arm 21 is provided at the tail of the firing handle 2, and the mounting section 31 is arranged on the connecting arm 21. By additionally providing the connecting arm 21, the hook piece 3 is conveniently installed, and there is a spacing between the hook piece 3 and the firing handle 2, so as to avoid structural interference between the firing handle 2 and the fixed handle 4 during the firing process.

[0052] Illustratively, an anti-skid structure is provided on the surface of the firing handle 2. The anti-skid structure can be, but is not limited to, an anti-skid protrusion, an anti-skid groove, or an anti-skid line, etc.

[0053] Note that the above merely describes preferred embodiments of the present application and the principles of the technology applied. Those skilled in the art will understand that the present application is not limited to the specific embodiments described herein, and that various obvious changes, modifications and substitutions can be made thereto without departing from the scope of the present application. Therefore, although the present application has been described in detail through the above embodiments, the present application is not limited to the above embodiments, and can include more other equivalent embodiments without departing from the concept of the present application, and the scope of the present application is determined by the scope of the claims.

Claims

1. A safety firing anastomat comprising an anastomat body (1) and a firing handle (2) which is rotatably arranged on the anastomat body (1), characterized in that The safety firing anastomat further comprises: A hook piece (3) comprising a mounting section (31), a first arc section (32) and a second arc section (33) connected in sequence, a limiting boss (34) being arranged on the mounting section (31), the bending direction of the first arc section (32) being opposite to that of the second arc section (33), the mounting section (31) being arranged on the firing handle (2) and being able to swing with the firing handle (2); A fixed handle (4) being fixedly arranged on the anastomat main body (1) and being located on the swing track of the hook piece (3), the fixed handle (4) having a containing cavity (41), the fixed handle (4) being provided with a first opening (42) and a second opening (43), the first opening (42) and the second opening (43) both communicating with the containing cavity (41), a first retreat-stop platform (44) being arranged on the inner bottom wall of the fixed handle (4) and being close to the first opening (42), a guide strip-shaped part (45) being arranged on the inner side wall of the fixed handle (4) and being close to the second opening (43), an outer side surface (451) of the guide strip-shaped part (45) and the inner side wall of the fixed handle (4) surrounding to form a handle reset sliding groove (46); The hook piece (3) is configured to: during the firing process of the firing handle (2), the hook piece (3) moves along its own swing track, the second arc section (33) abuts against the first retreat-stop platform (44) and deforms to enter the containing cavity (41), the limiting boss (34) slides along the inner side surface (452) of the guide strip-shaped part (45), after the firing handle (2) completes firing, the limiting boss (34) enters the handle reset sliding groove (46), and the hook piece (3) is separated from the fixed handle (4).

2. The safety-firing anastomosis appliance defined in claim 1, wherein: The extension direction of the guide strip-shaped part (45) gradually inclines from the second opening (43) to the inner bottom wall of the fixed handle (4).

3. The safety-firing anastomosis device according to claim 2, wherein, A first inclined surface (341) is arranged on the surface of the limiting boss (34), a second inclined surface (453) is arranged on the inner side surface (452) of the guide strip-shaped part (45) close to the first opening (42), and the first inclined surface (341) slides into the containing cavity (41) of the fixed handle (4) along the second inclined surface (453).

4. The safety-firing anastomosis device according to claim 3, wherein, A third inclined surface (342) is arranged on the surface of the limiting boss (34), a fourth inclined surface (454) is arranged on the outer side surface (451) of the guide strip-shaped part (45) close to the second opening (43), and the third inclined surface (342) slides into the handle reset sliding groove (46) along the fourth inclined surface (454).

5. The safety-firing anastomosis appliance defined in claim 2 wherein, The opposite inner side walls of the fixed handle (4) are both provided with the guide strip-shaped part (45), the opposite outer side walls of the mounting section (31) are both provided with the limiting boss (34), and the guide strip-shaped part (45) and the limiting boss (34) are one-to-one corresponding.

6. The safety-firing anastomosis appliance defined in claim 1 wherein, The inner bottom wall of the fixed handle (4) is provided with a second retreat-stop platform (47) away from the first opening (42), the second retreat-stop platform (47) is spaced apart from the first retreat-stop platform (44), and a plurality of retreat-stop teeth (471) are arranged on the second retreat-stop platform (47).

7. The safety-firing anastomat of Claim 1 wherein, The safety firing anastomat further comprises a pin shaft (5), and the firing handle (2) is rotationally connected with the anastomat body (1) through the pin shaft (5).

8. The safety-firing anastomosis device according to claim 7, wherein, The firing handle (2) is provided with a pushing part, and the pin shaft (5) is located between the pushing part and the hook part (3).

9. The safety-firing anastomat of Claim 1, wherein The tail part of the firing handle (2) is provided with a connecting arm (21), and the mounting segment (31) is arranged on the connecting arm (21).

10. The safety-firing anastomosis device according to any of claims 1-9, wherein, The surface of the firing handle (2) is provided with an anti-skid structure.

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