A nail support

Abstract

The present invention discloses an anvil, comprising a seat body and a cutting groove provided in the middle of the seat body, wherein the upper surface of the seat body is provided with raised parts, the raised parts are located on both sides of the cutting groove, and the surfaces of the raised parts are higher than the surface of the seat body; the raised parts are provided with a plurality of anti-slip parts, the anti-slip parts include a first anti-slip part and a second anti-slip part connected to the first anti-slip part, and the first anti-slip part and the second anti-slip part are both inclinedly arranged. The present invention can reduce the sliding between the tissue and the anvil, and improve the anastomosis effect.

Description

Technical Field

[0001] The invention relates to the field of minimally invasive linear cutting stapler equipment for laparoscopes, and in particular to an anvil. Background Art

[0002] With the popularization of minimally invasive surgery in China, laparoscopic minimally invasive linear cutting staplers have been widely used. The design of the nail groove of the anvil and the compression and locking effect on the tissue during the use of the stapler directly affect the suturing effect. Specifically, the more reasonable the design of the nail groove of the anvil, the better the tissue compression and locking effect, and the better the suturing quality of the surgical incision. In addition, the anvil plays a crucial role in positioning and guiding the process of cutting tissue in the stapler, which directly affects the cutting effect.

[0003] The contact surface of the stapler assembly of the laparoscopic linear cutting stapler currently used in surgical operations usually adopts a flat tissue contact surface. Since human tissue contains a large amount of tissue fluid and the tissue fluid is sticky, slippage is likely to occur between the tissue and the stapler support during the surgical anastomosis process, thereby affecting the anastomosis effect, prolonging the operation time, and causing pain to the patient. Summary of the invention

[0004] The technical problem to be solved by the present invention is to provide a nail support, which can reduce the sliding between the tissue and the nail support and improve the anastomosis effect.

[0005] In order to solve the above technical problems, the present invention provides a nail support seat, including a seat body and a tool groove opened in the middle of the seat body, the upper surface of the seat body is provided with a protrusion, the protrusion is located on both sides of the tool groove, and the surface of the protrusion is higher than the surface of the seat body; a plurality of anti-slip parts are provided on the protrusion, the anti-slip parts include a first anti-slip part and a second anti-slip part connected to the first anti-slip part, the first anti-slip part and the second anti-slip part are both inclined.

[0006] Furthermore, an end portion of the first anti-slip portion is connected to an end portion of the second anti-slip portion.

[0007] Furthermore, the first anti-slip portion and the second anti-slip portion are symmetrically distributed along a straight line parallel to the raised portion.

[0008] Furthermore, the first anti-slip portion takes the connection between it and the second anti-slip portion as a base point and is inclined in a direction away from the free end of the seat body; the second anti-slip portion takes the connection between it and the first anti-slip portion as a base point and is inclined in a direction away from the free end of the seat body.

[0009] Furthermore, the anti-slip parts distributed on the two raised portions are symmetrically arranged with respect to the tool feeding groove.

[0010] Furthermore, the anti-slip member is distributed close to the free end of the seat body.

[0011] Furthermore, the end of the protrusion close to the free end of the seat body is chamfered.

[0012] Furthermore, guard plates are provided on both sides of the seat body to prevent overflow of soft tissue.

[0013] Furthermore, the end of the seat body is connected to a limiting piece.

[0014] Furthermore, the seat body is integrally formed.

[0015] Beneficial effects of the present invention:

[0016] A protrusion is provided on the upper surface of the seat body, and the surface of the protrusion is higher than the surface of the seat body. Therefore, when the anvil is used to clamp the tissue, the contact area between the seat body and the tissue can be reduced. Therefore, when the same clamping force is applied to the tissue, the internal stress of the tissue can be increased by the protrusion acting on the tissue to obtain a greater clamping force. The anti-slip part composed of the inclined first anti-slip part and the second anti-slip part can increase the friction between the tissue and the protrusion, thereby increasing the stability of the seat body when clamping the tissue. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 It is an overall schematic diagram of the present invention;

[0018] Figure 2 It is a partial schematic diagram of the present invention;

[0019] Figure 3 This is the force analysis of the first anti-slip part and the second anti-slip part in the present invention.

[0020] Explanation of the numbers in the figure: 1, seat body; 11, tool groove; 2, raised portion; 3, anti-slip part; 31, first anti-slip part; 32, second anti-slip part; 4, limit part; 5, guard plate. DETAILED DESCRIPTION

[0021] The present invention is further described below in conjunction with the accompanying drawings and specific embodiments so that those skilled in the art can better understand the present invention and implement it, but the embodiments are not intended to limit the present invention.

[0022] Reference Figure 1-Figure 3As shown, an embodiment of the anvil of the present invention comprises a seat body 1 and a cutting groove 11 provided in the middle of the seat body 1, wherein the cutting groove 11 is provided along the length direction of the seat body 1 and is used to cooperate with the nail pushing plate. A protrusion 2 is provided on the upper surface of the seat body 1, and the surface of the protrusion 2 is higher than the surface of the seat body 1. Therefore, when the anvil is used to clamp tissue, the contact area between the seat body 1 and the tissue can be reduced, so that when the same clamping force is applied to the tissue, the internal stress of the tissue can be increased by the protrusion 2 acting on the tissue to obtain a greater clamping force.

[0023] The raised portions 2 are located on both sides of the cutting groove 11 so that the clamping force applied by the seat body 1 to the tissue is more evenly distributed. In this embodiment, the raised portions 2 are symmetrically distributed about the cutting groove 11, and the two raised portions 2 are arranged close to the cutting groove 11, so that the clamping force of the anvil seat on the tissue close to the cutting position is larger, so as to ensure the stability of the tissue clamping during cutting and anastomosis, thereby improving the anastomosis effect.

[0024] One side of the protrusion 2 close to the free end of the seat body 1 is chamfered. When the seat body 1 contacts the tissue, the chamfered end facilitates the clamping of the tissue.

[0025] The protrusion 2 is provided with a plurality of anti-slip parts 3, and the anti-slip parts 3 include a first anti-slip part 31 and a second anti-slip part 32, and the first anti-slip part 31 and the second anti-slip part 32 are connected. The anti-slip part 3 composed of the first anti-slip part 31 and the second anti-slip part 32 can increase the friction between the tissue and the protrusion 2, thereby increasing the stability of the seat body 1 when clamping the tissue. The first anti-slip part 31 and the second anti-slip part 32 are both inclined, and the inclined first anti-slip part 31 and the second anti-slip part 32 will respectively apply pressure perpendicular to the first anti-slip part 31 and the second anti-slip part 32 to the tissue, thereby further increasing the clamping effect.

[0026] The end of the first anti-slip part 31 is connected to the end of the second anti-slip part 32. The first anti-slip part 31 is based on the connection point with the second anti-slip part 32 and is inclined in the direction away from the free end of the seat body 1. The second anti-slip part 32 is based on the connection point with the first anti-slip part 31 and is inclined in the direction away from the free end of the seat body 1. Therefore, the opening of the tissue clamping space formed by the first anti-slip part 31 and the second anti-slip part 32 is set in the direction away from the free end of the seat body 1. When the seat body 1 is used to clamp the tissue, the first anti-slip part 31 presses the tissue in the direction of F1, and the second anti-slip part 32 presses the tissue in the direction of F2. The pressure F1 applied by the first anti-slip part 31 can be decomposed into F1a along the length direction of the seat body 1 and F1b perpendicular to the length direction of the seat body 1. At the same time, the pressure F2 applied by the second anti-slip part 32 can be decomposed into F2a along the length direction of the seat body 1 and F2b perpendicular to the length direction of the seat body 1. At the same time, F1a and F2a both point in the direction away from the free end of the seat body 1, so the first anti-slip part 31 and the second anti-slip part 32, which are arranged obliquely, can compress the tissue to the middle of the seat body 1, so as to improve the effect of the seat body 1 in compressing the tissue. In addition, when the first anti-slip part 31 and the second anti-slip part 32 are symmetrically distributed along a straight line parallel to the protrusion 2, the pressure exerted on the tissue by the first anti-slip part 31 and the pressure exerted on the tissue by the second anti-slip part 32 are the same, so that F1b and F2b can offset each other to fix the tissue in the middle of the seat body 1, and at the same time, the first anti-slip part 31 and the second anti-slip part 32 exert the same force on the tissue, so that the force exerted on the tissue by the seat body 1 can be uniform, thereby improving the clamping effect.

[0027] The anti-slip parts 3 on the two protrusions 2 are symmetrically distributed about the cutting groove 11, so that the two protrusions 2 apply the same clamping force to the tissue. Therefore, when the base 1 is used to clamp the tissue, the force on both sides of the cutting point is evenly distributed to ensure the cutting and anastomosis effect.

[0028] In addition, all the anti-slip parts 3 in this embodiment are arranged close to the free end of the seat body 1. Because the free end is far away from the force-applying end, the clamping force applied to the tissue by the free end of the seat body 1 will be smaller than that by the force-applying end, making it easy for the free end of the seat body 1 to slide relative to the tissue, affecting the cutting and anastomosis effect. Setting the anti-slip part 3 at a position close to the free end of the seat body 1 can increase the clamping force between the free end of the seat body 1 and the tissue, thereby making the force applied by the seat body 1 on the tissue more uniform. At the same time, setting the anti-slip part 3 at a position close to the free end of the seat body 1 can avoid interference between the anti-slip part 3 and the nail outlet bin for accommodating titanium nails; because the free end of the seat body 1 does not have a nail outlet bin, the strength and rigidity of the seat body 1 itself can be improved.

[0029] Guard plates 5 are provided on both sides of the base body 1, and the surface of the guard plates 5 is higher than the height of the surface of the base body 1. In this embodiment, the two guard plates 5 are located at the force-applying end of the base body 1. When the base body 1 is used to clamp tissue, the guard plates 5 will first contact the tissue and confine the tissue between the two guard plates 5, so the guard plates 5 can effectively prevent the soft tissue from overflowing.

[0030] The end of the seat body 1 is connected to the limiter 4, and the limiter 4 is located at the force-applying end of the seat body 1. When the seat body 1 is used to clamp tissue, the tissue and the limiter 4 are fitted and fixed, so that the position of the tissue is limited by the limiter 4 to control the distance of tissue clamping.

[0031] In this embodiment, the seat body 1 is integrally formed, and thus the seat body 1 integrally formed using forging technology has higher structural strength; at the same time, the crystals inside it are more evenly distributed, so that its strength and rigidity per unit volume are higher, so that the seat body 1 can withstand greater stress, thereby improving the squeezing effect when the seat body 1 clamps the tissue.

[0032] The above-described embodiments are only preferred embodiments for fully illustrating the present invention, and the protection scope of the present invention is not limited thereto. Equivalent substitutions or changes made by those skilled in the art based on the present invention are within the protection scope of the present invention. The protection scope of the present invention shall be subject to the claims.

Claims

1. A nail support, characterized in that: It includes a seat body and a tool groove opened in the middle of the seat body, the upper surface of the seat body is provided with a protrusion, the protrusion is located on both sides of the tool groove, and the surface of the protrusion is higher than the surface of the seat body; a plurality of anti-slip parts are provided on the protrusion, the anti-slip parts include a first anti-slip part and a second anti-slip part connected to the first anti-slip part, and the first anti-slip part and the second anti-slip part are both inclined.

2. The anvil according to claim 1, characterized in that: An end portion of the first anti-slip portion is connected to an end portion of the second anti-slip portion.

3. The anvil according to claim 1, characterized in that: The first anti-slip portion and the second anti-slip portion are symmetrically distributed along a straight line parallel to the raised portion.

4. The anvil according to claim 1, characterized in that: The first anti-slip portion takes the connection point between it and the second anti-slip portion as a base point and is inclined in a direction away from the free end of the seat body; the second anti-slip portion takes the connection point between it and the first anti-slip portion as a base point and is inclined in a direction away from the free end of the seat body.

5. The anvil according to claim 1, characterized in that: The anti-slip parts distributed on the two protruding parts are symmetrically arranged with respect to the tool feeding groove.

6. The anvil according to claim 1, characterized in that: The anti-slip part is distributed close to the free end of the seat body.

7. The anvil according to claim 1, characterized in that: The end of the protrusion close to the free end of the seat body is chamfered.

8. The anvil according to claim 1, characterized in that: Guard plates are arranged on both sides of the seat body to prevent soft tissue from overflowing.

9. The anvil according to claim 1, characterized in that: The end of the seat body is connected to a limiting piece.

10. The anvil according to claim 1, characterized in that: The seat body is integrally formed.

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