A staple cartridge pad membrane for controlling the tightness of the fit

Abstract

This invention relates to the field of wound protection membrane technology, and in particular to a staple cartridge pad membrane for controlling the tightness of anastomosis. It includes a membrane body, on the left and right sides of the end face facing the staple cartridge, with staple placement structures on each side. Each staple placement structure includes multiple staple placement protrusion groups arranged sequentially along the width of the membrane body. Each staple placement protrusion includes multiple protrusions located on the same straight line. The height of the protrusions in each staple placement protrusion group is consistent, while the height of the protrusions in different staple placement protrusion groups is different. This invention, by setting placement protrusions of different protrusion heights on the surface of the membrane body, can achieve different degrees of anastomosis tightness at different anastomosis positions, thereby achieving a gradient effect of loose inner and tight outer anastomosis, resulting in an ideal healing effect of the anastomosis section. The placement protrusions can also compress the anastomotic tissue within the staples, improving the fixation effect of the anastomosis.

Description

Technical Field

[0001] This invention relates to the field of anastomosis device technology, and in particular to a stapler cartridge pad membrane for controlling the tightness of anastomosis. Background Technology

[0002] When using an anastomosis device for surgical resection and anastomosis, the morphological changes and blood supply of the local tissues at the anastomosis site affect the stability and healing of the anastomosis. Clinically, a gradient of looseness at the inner edge and tightness at the outer edge is desired to achieve ideal healing of the resection and reduce the impact on physiological structures. Specifically, this means achieving a tight anastomosis edge and a slightly looser proximal side.

[0003] In existing technologies, the stapler's cartridge suture (located on the stapler's central axis) typically has three rows of "U"-shaped staples on each side. Adjacent rows of staples are staggered to prevent bleeding and leakage. During anastomosis, the staples are ejected from the cartridge, and after passing through two layers of anastomosed tissue, the two staple legs fold back upon encountering the anvil's shaping die, forming an inward "B" shape to complete the anastomosis. The tightness of the tissue within the two loops of the "B" shape determines the anastomosis tightness. Since the distance between the cartridge surface and the anvil surface is fixed during anastomosis, the anastomosis tightness within the loops formed by staple legs of the same length is the same. Currently, different tightness distributions on the same anastomotic surface are achieved by matching some long-legged staples with corresponding deep anvil die or some short-legged staples with shallow cartridges. However, this structure has considerable complexity and a risk of unreliable fixation, mainly because the "B" shape fixation from staple legs of different lengths can easily result in incomplete fixation. Summary of the Invention

[0004] This application addresses the shortcomings of existing production technologies by providing a staple cartridge pad film for controlling the tightness of the anastomosis. Positioning bosses with different protrusion heights are provided on the surface of the film body. After the film body is attached to the staple cartridge surface, the positioning bosses are inserted between the two legs of the corresponding staples in the staple cartridge. During anastomosis, different anastomosis tightness can be obtained at different staple anastomosis positions, thereby achieving an anastomosis gradient effect of loose inside and tight outside, and obtaining an ideal healing effect of the anastomosis section.

[0005] The technical solution adopted in this invention is as follows:

[0006] A staple cartridge pad membrane for controlling the tightness of anastomosis includes a film body. On the end face of the film body facing the staple cartridge, staple occupant structures are respectively provided on the left and right sides. The two staple occupant structures on the left and right sides of the film body are symmetrically arranged about the center line of the film body's length direction. Each staple occupant structure includes multiple staple occupant protrusion groups, which are arranged sequentially along the width direction of the film body. Each staple occupant protrusion includes multiple occupant protrusions located on the same straight line, and these protrusions are equidistantly distributed along the length direction of the film body. The height of the protrusions in each staple occupant protrusion group is consistent, but the height of the protrusions in different staple occupant protrusion groups is different, with the protrusions in the outermost staple occupant protrusion group having the smallest height.

[0007] Furthermore, the membrane body is made of absorbable biomaterials and has a long strip-shaped plate structure.

[0008] Furthermore, one end of the film body along its length is a trapezoidal head end, with a non-cutting groove provided at the center of the head end.

[0009] Furthermore, the other end of the film body along the length direction is a rearward protrusion, the width of which is smaller than the width of the film body.

[0010] Furthermore, a positioning groove is provided at the center of the tail end, and the width of the positioning groove gradually increases from the inside to the outside.

[0011] Furthermore, the locating bosses of the multiple anastomotic staple locating boss groups are staggered with each other in the length direction.

[0012] Furthermore, the occupant boss has a long strip-shaped structure, and the corners of the occupant boss are rounded.

[0013] The beneficial effects of this invention are as follows:

[0014] This invention achieves different anastomotic tightness at different anastomotic positions by setting occupant protrusions of different protrusion heights on the surface of the film body, thereby achieving an anastomotic gradient effect of loose inside and tight outside, and obtaining an ideal healing effect of the anastomotic section; the occupant protrusions can also press the anastomotic tissue into the anastomotic staple, improving the fastening effect of the anastomosis. Attached Figure Description

[0015] Figure 1 This is a three-dimensional structural diagram of the present invention.

[0016] Figure 2 This is a side view of the present invention.

[0017] Figure 3 This is a structural diagram of the anastomosis staple of the present invention.

[0018] Figure 4This is a structural diagram of the anastomosis state of the anastomosis staple of the present invention.

[0019] The components are: 1. Membrane body; 2. No-cut groove; 3. Tail protrusion; 4. Positioning groove; 5. Placement protrusion; 6. Anastomosis staple; 7. Anastomosis tissue. Detailed Implementation

[0020] The specific embodiments of the present invention will now be described with reference to the accompanying drawings.

[0021] like Figure 1 and Figure 2 As shown, a staple cartridge membrane for controlling the tightness of the anastomosis includes a long strip-shaped plate-like membrane body 1, which is made of absorbable biomaterial.

[0022] like Figure 1 As shown, one end of the membrane body 1 along its length is a trapezoidal head end, and a non-cutting groove 2 is provided at the center of the head end. The membrane body 1 is installed on the staple cartridge surface of the stapler for use. During use, since the cutting blade of the stapler cannot cut to the head end of the membrane body 1, the non-cutting groove 2 allows the membrane body 1 to be separated into two halves after being cut by the cutting blade.

[0023] like Figure 1 As shown, the other end of the membrane body 1 along its length is a rearward protrusion 3, the width of which is smaller than the width of the membrane body 1. The protrusion 3 can extend into the throat of the stapler, enabling the membrane body 1 to be positioned and installed in the throat of the stapler.

[0024] like Figure 1 As shown, a positioning groove 4 is provided at the center of the tail end of the tail protrusion 3. The positioning groove 4 can be engaged at the throat position of the stapler, realizing the positioning and installation of the tail protrusion 3 within the throat of the stapler. The width of the positioning groove 4 gradually increases from the inside to the outside.

[0025] like Figure 1 and Figure 2 As shown, staple occupancy structures are respectively provided on the left and right sides of the end face of the film body 1 facing the staple cartridge. The two staple occupancy structures on the left and right sides of the film body 1 are symmetrically arranged with respect to the center line of the length direction of the film body 1.

[0026] like Figure 1 and Figure 2 As shown, the staple placement structure includes three staple placement boss groups, which are arranged sequentially along the width direction of the membrane body 1. Each staple placement boss includes multiple placement bosses 5 located on the same straight line, and the multiple placement bosses 5 are equidistantly distributed along the length direction of the membrane body 1.

[0027] The three anastomotic staple placement bosses 5 are staggered along their length to prevent bleeding and leakage at the anastomosis site. The multiple placement bosses 5 in each anastomotic staple placement boss group maintain the same height, but the placement bosses 5 in different anastomotic staple placement boss groups have different heights, with the outermost placement boss 5 having the smallest height.

[0028] like Figure 1 and Figure 2 As shown, the occupant boss 5 is a long strip structure, and the corner of the occupant boss 5 is a rounded transition.

[0029] This invention comprises multiple unconnected, spacer protrusions 5 of varying heights distributed on the staple cartridge surface of the film body 1. The film body 1 is fixed to the staple cartridge surface by the spacer protrusions 5 being pushed into the staple cartridge. Each spacer protrusion 5 is positioned between the two legs of a corresponding anastomotic staple 6. During anastomosis, the spacer protrusion 5 directly occupies the volume within the "B" ring formed by the anastomotic staple 6, compressing the anastomotic tissue 7. The film body 11 is made of an absorbable material with a density greater than or equal to the density of the anastomotic tissue 7. The tightness of the anastomosis is related to the volume compression ratio of the anastomotic tissue 7 within the "B" ring formed by the anastomotic staple 6; the higher the spacer protrusion 5 is pushed in, the tighter the anastomotic tissue 7 is compressed within the anastomotic staple 6.

[0030] The above description is an explanation of the present invention and not a limitation thereof. The scope of the present invention is defined by the claims. Within the scope of protection of the present invention, any form of modification may be made.

Claims

1. A staple cartridge pad membrane for controlling the tightness of the fit, comprising a film body (1), characterized in that: The film body (1) has two staple occupancy structures on the left and right sides of the end face facing the staple cartridge. The two staple occupancy structures on the left and right sides of the film body (1) are symmetrically arranged with respect to the center line of the length direction of the film body (1). The staple occupancy structure includes multiple staple occupancy boss groups. The multiple staple occupancy boss groups are arranged sequentially along the width direction of the film body (1). Each staple occupancy boss includes multiple occupancy bosses (5) located on the same straight line. The multiple occupancy bosses (5) are equidistantly distributed along the length direction of the film body (1). The height of the multiple occupancy bosses (5) in each staple occupancy boss group is consistent. The height of the occupancy bosses (5) in different staple occupancy boss groups is different, and the height of the occupancy bosses (5) in the outermost staple occupancy boss group is the smallest.

2. The staple cartridge pad membrane for controlling the tightness of the fit as described in claim 1, characterized in that: The film body (1) is made of absorbable biomaterial and has a long strip plate structure.

3. The staple cartridge pad membrane for controlling the tightness of the fit as described in claim 2, characterized in that: The film body (1) has a trapezoidal head end along its length, and a non-cutting groove (2) is provided at the center of the head end.

4. The staple cartridge pad membrane for controlling the tightness of the fit as described in claim 3, characterized in that: The other end of the film body (1) along the length direction is a rearward protrusion (3), and the width of the protrusion (3) is smaller than the width of the film body (1).

5. The staple cartridge pad membrane for controlling the tightness of the fit as described in claim 4, characterized in that: The tail protrusion (3) is provided with a positioning groove (4) at the center of its tail end. The width of the positioning groove (4) gradually increases from the inside to the outside.

6. The staple cartridge pad membrane for controlling the tightness of the fit as described in claim 5, characterized in that: The occupant protrusions (5) of the multiple anastomosis staple occupant protrusion groups are staggered with each other in the length direction.

7. The staple cartridge pad membrane for controlling the tightness of the fit as described in claim 6, characterized in that: The occupant protrusion (5) is a long strip structure, and the corner of the occupant protrusion (5) is a rounded transition.

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