Endoscope anastomat

Abstract

The utility model discloses an endoscope anastomat, and belongs to the technical field of medical instruments. The endoscope anastomat comprises a mounting shell, and a containing cavity is formed in the mounting shell; the percussion rack with one-way teeth is arranged in the mounting shell, and the percussion rack is made of plastic; the percussion handle piece is rotationally connected with the mounting shell and located below the percussion rack, a pushing block is arranged on the percussion handle piece, and the pushing block can push the percussion rack to move in the first direction by rotating the percussion handle piece; the cylinder is provided with an abutting part, a spiral section of the torsional spring is wound on the cylinder, a first section of the torsional spring is connected with the cylinder, a second section of the torsional spring abuts against the installation shell, one end of the cylinder is rotationally connected with the installation shell and located above the percussion rack, and the abutting part can press the percussion rack so that the percussion rack can be close to the pushing block. In the percussion process, the push block and the one-way teeth of the percussion rack can be prevented from slipping off, and normal work of the endoscope anastomat is guaranteed.

Description

TECHNICAL FIELD

[0001] The utility model relates to medical instrument technical field especially, relate to a kind of endoscope anastomat. BACKGROUND

[0002] Endoscopic surgery, also known as minimally invasive surgery, is a surgical method that uses a small incision to place instruments into the body cavity (such as the abdominal cavity, uterine cavity, thoracic cavity, etc.), and then uses a television screen to examine, diagnose and treat diseases in the cavity. Its principle lies in using modern optics, electronics, machinery and other high-tech means to send surgical instruments and camera equipment into the human body through a small incision. The surgeon can clearly observe the situation of the surgical area through the real-time image on the television screen and perform precise surgical operations.

[0003] Endoscopic anastomat is one of the important instruments for endoscopic surgery. It is also known as endoscopic cutting anastomat and disposable cartridge, which is used for disconnection, resection, anastomosis and other operations of tissues under endoscopic surgery. In the prior art, such as the endoscopic anastomat single-handed adjustable anastomosis mechanism disclosed in CN106037847A, the firing rack in the endoscopic anastomat is pushed forward by a push block on the firing handle member. However, due to manufacturing errors, the push block on the firing handle member may not fully engage with the one-way teeth on the firing rack, resulting in the problem of slippage of the push block and the firing rack during the firing process.

[0004] Therefore, there is an urgent need to provide an endoscopic anastomat to solve the above problems. UTILITY MODEL CONTENT

[0005] The utility model aims to provide an endoscopic anastomat that can prevent the push block and the one-way teeth of the firing rack from slipping during the firing process, ensuring the normal operation of the endoscopic anastomat.

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

[0007] The endoscopic anastomat comprises:

[0008] A mounting shell having a receiving cavity inside;

[0009] A firing rack with one-way teeth, which is arranged inside the mounting shell, and the material of the firing rack is plastic;

[0010] A firing handle member, which is rotationally connected with the mounting shell and located below the firing rack, and a push block is arranged on the firing handle member. Rotating the firing handle member can make the push block push the firing rack to move in the first direction;

[0011] The torsion spring has a helical section arranged on the column, a first section of the torsion spring is connected with the column, and a second section of the torsion spring is in abutment with the mounting shell.

[0012] As an alternative to the endoscope anastomat, an inner wall surface of the mounting shell is provided with a mounting groove, and one end of the column is rotationally arranged in the mounting groove.

[0013] As an alternative to the endoscope anastomat, a clamping groove is arranged on the column, and the first section of the torsion spring is inserted into the clamping groove.

[0014] As an alternative to the endoscope anastomat, an inner wall surface of the mounting shell is provided with a limiting portion, the limiting portion is located above the firing rack, and the second section of the torsion spring is in abutment with the limiting portion.

[0015] As an alternative to the endoscope anastomat, one end of the column near the pressing portion is provided with a weight-reducing hole.

[0016] As an alternative to the endoscope anastomat, the endoscope anastomat further comprises a reset cap connected with the firing rack, and the reset cap is used to pull the firing rack to move in the reverse direction of the first direction.

[0017] As an alternative to the endoscope anastomat, an avoiding groove is arranged on the firing rack, and the pressing portion can be in abutment with a side wall of the avoiding groove.

[0018] As an alternative to the endoscope anastomat, the endoscope anastomat further comprises a safety unit, and the safety unit comprises:

[0019] The swing limiting piece has a protruding column, a first end of the swing limiting piece is provided with a central shaft, an inner wall surface of the mounting shell is provided with a central hole, and the central shaft is rotationally arranged in the central hole.

[0020] The adapter link has a first end hingedly connected with the firing handle member.

[0021] The pulling link has a first end hingedly connected with a second end of the adapter link, and a second end of the pulling link is provided with a guide sliding groove, the protruding column is arranged in the guide sliding groove, and rotation of the firing handle member can make the second end of the swing limiting piece away from the firing rack and be unlocked with the firing rack or close to the firing rack and be locked with the firing rack.

[0022] As an alternative to the endoscopic anastomat, the first end of the adapter link is provided with a first pin shaft, the firing handle member is provided with a first through hole, and the first pin shaft is rotationally arranged in the first through hole.

[0023] The second end of the adapter link is provided with a second pin shaft, and the first end of the pull link is provided with a second through hole, and the second pin shaft is rotationally arranged in the second through hole.

[0024] As an alternative to the endoscopic anastomat, the outer wall surface of the firing handle member is provided with an anti-skid structure; and / or, the inner wall surface of the mounting shell is provided with a reinforcing rib.

[0025] Compared with the prior art, the endoscopic anastomat has the following beneficial effects:

[0026] The endoscopic anastomat provided by the utility model installs the plastic material firing rack in the mounting shell, and rotating the firing handle member can make the push block push the firing rack to move in the first direction. A torsional spring and a column are arranged in the mounting shell and above the firing rack, and under the action of the torsional spring, the pressing part of the column is pressed towards the firing rack, so that the firing rack is deformed to some extent and close to the push block, and the one-way tooth of the push block is completely engaged with the one-way tooth of the firing rack, so that the one-way tooth of the push block is prevented from slipping off the one-way tooth of the firing rack, and the normal work of the endoscopic anastomat is ensured. BRIEF DESCRIPTION OF DRAWINGS

[0027] In order to more clearly illustrate the technical solutions in the embodiments of the utility model, the following will briefly introduce the drawings needed to be used in the description of the embodiments of the utility model. Obviously, the drawings in the following description are only some embodiments of the utility model, and other drawings can be obtained by the person skilled in the art according to the contents of the embodiments of the utility model and the drawings without any creative labor.

[0028] Figure 1 It is the assembly schematic view of the endoscopic anastomat in the embodiment of the utility model in the unfired state;

[0029] Figure 2 It is the assembly schematic view of the endoscopic anastomat in the embodiment of the utility model in the fired state;

[0030] Figure 3 It is the structural schematic view of the mounting shell in the embodiment of the utility model;

[0031] Figure 4 It is the structural schematic view of the column pressing the firing rack downwards in the embodiment of the utility model;

[0032] Figure 5 It is the structural schematic view of the reset cap pulling and pressing the firing rack backwards in the embodiment of the utility model;

[0033] Figure 6 It is the structural schematic view of the column body in the utility model embodiment;

[0034] Figure 7 It is the structural schematic view of the firing hand component in the utility model embodiment;

[0035] Figure 8 It is the structural schematic view of the safety unit and the firing rack locking in the utility model embodiment;

[0036] Figure 9 It is the assembly schematic view of the safety unit in the utility model embodiment;

[0037] Figure 10 It is the explosion schematic view of the safety unit in the utility model embodiment.

[0038] Reference signs:

[0039] 1, installation housing;2, firing rack;3, firing hand component;4, torsion spring;5, column body;6, reset cap;7, safety unit;8, reset spring;

[0040] 11, installation groove;12, limiting portion;13, center hole;14, reinforcing rib;

[0041] 21, one-way tooth;22, avoiding groove;

[0042] 31, push block;32, first through hole;33, hook hole;

[0043] 51, abutting pressure portion;52, clamping groove;53, weight-reducing hole;

[0044] 71, swing limiting piece;711, protruding column;712, center shaft;713, wedge-shaped portion;72, adapter connecting rod;721, first pin shaft;722, second pin shaft;73, pulling connecting rod;731, guide sliding groove;732, second through hole. DETAILED DESCRIPTION

[0045] In order to make the purpose, technical scheme and advantages of the utility model embodiment more clear, the technical scheme in the utility model embodiment will be described clearly and completely below by combining with the drawings in the utility model embodiment, obviously, the described embodiment is a part of the embodiment of the utility model, rather than all the embodiments. The components of the utility model embodiment described and shown in the drawings here can be arranged and designed in various different configurations.

[0046] In the description of the utility model, it is necessary to explain 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 utility model product is used, and is only for the convenience of describing the utility model and simplifying the description, and does not indicate or imply 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 utility model. In addition, the terms "first", "second", "third" and the like are only used for differentiation in description, and cannot be understood as indicating or implying relative importance. In the description of the utility model, unless otherwise specified, the meaning of "a plurality of" is two or more.

[0047] In the description of the utility model, it is also necessary to explain that, unless otherwise specified and limited, the terms "set", "connected" should be understood broadly, for example, can be fixedly connected, can be detachably connected, or integrally connected, can be mechanically connected, or electrically connected. For ordinary skilled in the art, the specific meaning of the above terms in the utility model can be understood according to the specific circumstances.

[0048] The embodiments of the utility model are described in detail below, and the examples of the embodiments are shown in the drawings, wherein the same or similar reference numerals represent the same or similar elements or elements with the same or similar functions throughout. The embodiments described below by referring to the drawings are exemplary, only for explaining the utility model, and cannot be understood as limiting the utility model.

[0049] In order to avoid the push block and the one-way tooth of the firing rack from slipping off, and ensure the normal work of the endoscope anastomat, the embodiment provides an endoscope anastomat, which is described below in combination with Figures 1 to 10 The specific content of the embodiment is described in detail. It should be noted that the first direction mentioned in the embodiment is Figure 1 the X direction in the above, the head of the X direction arrow is the direction of the forward movement of the firing rack, and the tail of the X direction arrow is the direction of the backward movement of the firing rack.

[0050] The endoscopic anastomat in the embodiment comprises a mounting shell 1, a firing rack 2 with one-way teeth 21, a firing handle 3, a torsional spring 4 and a column 5 with a pressing part 51. The mounting shell 1 is internally provided with a containing cavity. The firing rack 2 is arranged in the mounting shell 1 and is made of plastic. The firing handle 3 is rotationally connected with the mounting shell 1 and is located below the firing rack 2. The firing handle 3 is provided with a pushing block 31. When the firing handle 3 is rotated, the pushing block 31 can push the firing rack 2 to move in a first direction. The firing handle 3 is provided with a hook hole 33. One end of a reset spring 8 is connected with the mounting shell 1, and the other end of the reset spring 8 is connected with the hook hole 33. After the hand is released, the reset spring 8 can make the firing handle 3 in an unfolded state. The helical section of the torsional spring 4 is arranged on the column 5. The first section of the torsional spring 4 is connected with the column 5, and the second section of the torsional spring 4 is in abutment with the mounting shell 1. One end of the column 5 is rotationally connected with the mounting shell 1 and is located above the firing rack 2. The pressing part 51 can press the firing rack 2 to make the firing rack 2 close to the pushing block 31.

[0051] Briefly, the endoscopic anastomat is characterized in that the plastic firing rack 2 is arranged in the mounting shell 1. When the firing handle 3 is rotated, the pushing block 31 can push the firing rack 2 to move in the first direction. The torsional spring 4 and the column 5 are arranged in the mounting shell 1 and above the firing rack 2. Under the action of the torsional spring 4, the pressing part 51 of the column 5 presses the firing rack 2, so that the firing rack 2 is deformed and close to the pushing block 31. The pushing block 31 is completely engaged with the one-way teeth 21 of the firing rack 2, so that the pushing block 31 cannot slip off the one-way teeth 21 of the firing rack 2, and the normal work of the endoscopic anastomat is ensured.

[0052] Further, as shown in the drawings, Figure 3 combined Figure 1 with the mounting shell 1, the inner wall surface of the mounting shell 1 is provided with a mounting groove 11, and one end of the column 5 is rotationally arranged in the mounting groove 11. By adding the mounting groove 11, the mounting position of the main body in the mounting shell 1 is determined.

[0053] Further, the column 5 is provided with a clamping groove 52, and the first section of the torsional spring 4 is inserted into the clamping groove 52. By adding the clamping groove 52, the first section of the torsional spring 4 is stably connected with the column 5 by bending the first section of the torsional spring 4 and inserting it into the clamping groove 52.

[0054] Further, the inner wall surface of the mounting shell 1 is provided with a limiting part 12, the limiting part 12 is located above the firing rack 2, and the second section of the torsional spring 4 is in abutment with the limiting part 12. The limiting part 12 is a protruding structure. By adding the limiting part 12, the second section of the torsional spring 4 can be limited to abut with the mounting shell 1. Figure 1 For example, the torsional spring 4 can always make the column 5 have a tendency to rotate clockwise.

[0055] Further, the column 5 is provided with a weight-reducing hole 53 near one end of the abutting portion 51. By adding the weight-reducing hole 53, the overall weight of the column 5 is reduced.

[0056] Further, the laparoscope anastomat further comprises a reset cap 6 connected with the firing rack 2, and the reset cap 6 is used to pull the firing rack 2 to move in the reverse direction of the first direction.

[0057] Further, the abutting portion 51 is capable of abutting with the sidewall of the avoiding groove 22 provided on the firing rack 2. The principle of the laparoscope anastomat retraction assistance in the embodiment is that when the reset cap 6 pulls the firing rack 2 to move backward until the abutting portion 51 falls into the avoiding groove 22, the retraction force is increased due to the action of the torsional spring 4, and an obvious retraction-to-position prompt is given. The principle of the firing rack 2 compression in the embodiment is that the two ends of the torsional spring are clamped on the column and the mounting shell respectively to generate a clockwise rotation force. When the pushing block 31 pushes the firing rack 2 to fire forward, the abutting portion 51 will press the firing rack 2 to ensure the full contact of the pushing block 31 with the one-way tooth 21 of the firing rack 2, and the stability of the firing rack travel is improved.

[0058] Further, the laparoscope anastomat further comprises a safety unit 7, which comprises a swing limiting piece 71 with a protruding column 711, an adapter connecting rod 72, and a pulling connecting rod 73. The first end of the swing limiting piece 71 is provided with a central shaft 712, the inner wall surface of the mounting shell 1 is provided with a central hole 13, and the central shaft 712 is rotationally arranged in the central hole 13. The first end of the adapter connecting rod 72 is hingedly connected with the firing handle member 3. The first end of the pulling connecting rod 73 is hingedly connected with the second end of the adapter connecting rod 72, and the second end of the pulling connecting rod 73 is provided with a guide sliding groove 731, and the protruding column 711 is arranged in the guide sliding groove 731. Rotating the firing handle member 3 can make the second end wedge-shaped portion 713 of the swing limiting piece 71 away from or close to the firing rack 2 and be unlocked or locked with the firing rack 2. When the laparoscope anastomat is in the unfired state, the firing handle member 3 is in the unfolded state under the action of the reset spring 8, and the wedge-shaped portion 713 of the swing limiting piece 71 is locked with the firing rack 2, which can ensure that the firing rack 2 will not displace and improve the safety of the laparoscope anastomat. The adapter connecting rod 72 and the pulling connecting rod 73 are arranged between the firing handle member 3 and the swing limiting piece 71, and under the transmission action of the adapter connecting rod 72 and the pulling connecting rod 73, when the firing handle member 3 is rotated, the swing limiting piece 71 is unlocked with the firing rack 2, and at the same time, the firing handle member 3 drives the firing rack 2 to move in the first direction to complete the firing of the nail cartridge.

[0059] Specifically, the first end of the adapter link 72 is provided with a first pin shaft 721, the firing handle member 3 is provided with a first through hole 32, the first pin shaft 721 is rotatably arranged in the first through hole 32, and after the first pin shaft 721 is inserted into the first through hole 32, the adapter link 72 can rotate relative to the firing handle member 3. The second end of the adapter link 72 is provided with a second pin shaft 722, the first end of the pull link 73 is provided with a second through hole 732, and the second pin shaft 722 is rotatably arranged in the second through hole 732. After the second pin shaft 722 is inserted into the second through hole 732, the pull link 73 can rotate relative to the adapter link 72. Further, the first end of the swing limiting piece 71 is provided with a center shaft 712, the mounting shell 1 is provided with a center hole 13, and the center shaft 712 is movably arranged in the center hole 13. After the center shaft 712 is inserted into the center hole 13, the first end of the swing limiting piece 71 can rotate relative to the mounting shell 1.

[0060] Further, the outer wall surface of the firing handle member 3 is provided with an anti-skid structure, and / or the inner wall surface of the mounting shell 1 is provided with a reinforcing rib 14. The anti-skid structure in the embodiment can be, but is not limited to, an anti-skid protrusion, an anti-skid groove or an anti-skid line, which is not limited here. By additionally arranging the reinforcing rib 14, the overall structural strength of the mounting shell 1 is improved, and the service life is prolonged.

[0061] It should be noted that the above are only preferred embodiments of the present application and the technical principles applied. Those skilled in the art will understand that the present application is not limited to the specific embodiments described herein, and those skilled in the art can make various obvious changes, re-adjustments and substitutions 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 appended claims.

Claims

1. A laparoscopic stapler, characterized by, The utility model relates to a laparoscope anastomat, which comprises: a mounting shell (1) having a containing cavity in the mounting shell (1); a firing rack (2) provided in the mounting shell (1) and having one-way teeth (21), the firing rack (2) being made of plastic; a firing handle member (3) rotatably connected to the mounting shell (1) and located below the firing rack (2), the firing handle member (3) being provided with a push block (31), and rotation of the firing handle member (3) can make the push block (31) push the firing rack (2) to move in a first direction; a torsional spring (4) and a column (5) provided with a pressing portion (51), a helical section of the torsional spring (4) being wound around the column (5), a first section of the torsional spring (4) being connected to the column (5), a second section of the torsional spring (4) abutting against the mounting shell (1), one end of the column (5) being rotatably connected to the mounting shell (1) and located above the firing rack (2), and the pressing portion (51) being capable of pressing against the firing rack (2) to make the firing rack (2) approach the push block (31).

2. The endoscopic stapler according to claim 1, wherein, An installation groove (11) is arranged on an inner wall surface of the mounting shell (1), and one end of the column (5) is rotatably arranged in the installation groove (11).

3. The endoscopic stapler according to claim 2, wherein, A clamping groove (52) is arranged on the column (5), and the first section of the torsional spring (4) is inserted into the clamping groove (52).

4. The endoscopic stapler according to claim 3, wherein, A limiting portion (12) is arranged on the inner wall surface of the mounting shell (1), the limiting portion (12) being located above the firing rack (2), and the second section of the torsional spring (4) abutting against the limiting portion (12).

5. The endoscopic stapler according to claim 4, wherein, One end of the column (5) close to the pressing portion (51) is provided with a weight-reducing hole (53).

6. The endoscopic stapler according to claim 1, wherein, The laparoscope anastomat further comprises a reset cap (6) connected to the firing rack (2), the reset cap (6) being used to pull the firing rack (2) to move reversely in the first direction.

7. The endoscopic stapler according to claim 6, wherein, An avoiding groove (22) is arranged on the firing rack (2), and the pressing portion (51) is capable of abutting against a side wall of the avoiding groove (22).

8. The endoscopic stapler according to claim 1, wherein, The laparoscope anastomat further comprises a safety unit (7), the safety unit (7) comprising: a swing limiting member (71) provided with a convex column (711), a first end of the swing limiting member (71) being provided with a central shaft (712), an inner wall surface of the mounting shell (1) being provided with a central hole (13), and the central shaft (712) being rotatably arranged in the central hole (13); an adapter connecting rod (72), a first end of the adapter connecting rod (72) being hingedly connected to the firing handle member (3). A pulling connecting rod (73) is hinged with the second end of the adapter connecting rod (72), the second end of the pulling connecting rod (73) is provided with a guide sliding groove (731), the protruding column (711) is arranged in the guide sliding groove (731), and rotation of the trigger handle assembly (3) can make the second end of the swing limiting piece (71) away from or close to the trigger rack (2) and be unlocked or locked with the trigger rack (2).

9. The endoscopic stapler according to claim 8, wherein, The first end of the adapter connecting rod (72) is provided with a first pin shaft (721), the trigger handle assembly (3) is provided with a first through hole (32), and the first pin shaft (721) is rotationally arranged in the first through hole (32). The second end of the adapter connecting rod (72) is provided with a second pin shaft (722), the first end of the pulling connecting rod (73) is provided with a second through hole (732), and the second pin shaft (722) is rotationally arranged in the second through hole (732).

10. The endoscopic stapler according to any one of claims 1-9, wherein, The outer wall surface of the trigger handle assembly (3) is provided with an anti-skid structure; and / or, the inner wall surface of the mounting shell (1) is provided with a reinforcing rib (14).

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