Staple abutting seat for anastomosis nail

Abstract

The utility model relates to the field of medical instruments, and aims to provide an anastomosis nail abutting seat, a main body is a nail seat, a plurality of nail forming units in one-to-one correspondence with anastomosis nails are arranged on the nail seat, each nail forming unit comprises a left nail forming groove and a right nail forming groove, the center connecting line of the nail inlets in the outer ends of the two nail forming grooves forms a datum line extending left and right, the nail outlets in the inner ends of the two nail forming grooves are located on the front side and the rear side of the datum line respectively, and arc-shaped faces for guiding the nail legs of the anastomosis nails to slide from the nail inlets in the outer ends to the nail outlets in the inner ends to be closed to form the nails are arranged on the bottom faces of the nail forming grooves. The nail leg of the anastomosis nail can be guided to be closed to form a nail, so that the anastomosis area of the anastomosis nail is increased, local dense distribution of the anastomosis nail is avoided, and the anastomosis nail has an excellent suture hemostasis effect.

Description

Technical Field

[0001] This utility model relates to the field of medical devices, specifically to an anastomosis staple holder. Background Technology

[0002] The use of staplers to suture tissue is common in various surgical procedures. Surgeons use linear or circular staplers to fire staples into the tissue to suture it. Because small blood vessels can pass through the gaps in the "B"-shaped staples, the blood supply to the sutured area and its distal ends is not affected. Staples are mostly made of titanium or its alloys, resulting in less tissue reaction compared to hand sutures. The neat arrangement and equal spacing of the staples avoid the problems of overly sparse or dense suturing and overly tight or loose ligation inherent in hand sutures, thus ensuring good tissue healing.

[0003] Bleeding during suturing surgery is a serious issue, so all types of surgeons pay close attention to it. Analysis of bleeding after stapled closure using a stapler reveals that if the staple closure height is too high and fails to compress larger blood vessels within the tissue enclosed by the staple ring, bleeding at the cut edge will occur. Conversely, if the staple closure height is too low, it will cause crushing damage and bleeding to the tissue. Sometimes, even if the staple height meets the hemostatic requirements, localized bleeding may still occur at the cut edge of some tissues.

[0004] Extensive research suggests that this is related to the current suture arrangement method. The current suture arrangement method struggles to prevent bleeding at the incision site and still has weaknesses in hemostasis, primarily in two areas:

[0005] 1. The gap between the two "B" shaped stitches;

[0006] 2. The gap between the two nail legs forming rings of the "B" type nail (as shown in the attached document). Figure 6 (As shown). Utility Model Content

[0007] The purpose of this invention is to provide a staple anchor seat that can guide the staple legs to close into a staple, thereby increasing the anastomosis area and avoiding localized dense distribution of staples, resulting in excellent suturing and hemostasis.

[0008] The objective of this utility model is achieved through the following technical solution:

[0009] An anastomosis staple holder has a staple holder as its main body. The staple holder is provided with a plurality of staple forming units corresponding one-to-one with the anastomosis staples. Each staple forming unit includes two staple forming grooves distributed on the left and right. The center line connecting the staple inlets at the outer ends of the two staple forming grooves forms a reference line extending on the left and right. The staple outlets at the inner ends of the two staple forming grooves are located on the front and rear sides of the reference line, respectively. The bottom surface of the staple forming groove is provided with an arc-shaped surface that guides the staple legs to slide and close the staple from the outer staple inlet to the inner staple outlet to form the staple.

[0010] Compared with the prior art, the advantages of this utility model are:

[0011] 1. By combining two staple grooves with the arc-shaped surface, the staple legs can be guided by the arc-shaped surface to close and form staples on both sides before and after the baseline, increasing the anastomosis area and making the staples more evenly distributed after formation. This avoids the problem of localized dense distribution of type B staples, thereby improving the tightness of sutures and hemostasis.

[0012] 2. By arranging multiple rows of linear staple units and staggering adjacent rows of staple units, multiple anastomoses can be performed on the tissue sections that need to be anastomosed, further avoiding local bleeding at the tissue cut ends. Attached Figure Description

[0013] Figure 1 This is a schematic diagram of the structure of an embodiment of the stapled anchor seat of this utility model;

[0014] Figure 2 This is a simplified structural diagram of the nail-forming unit of this utility model;

[0015] Figure 3 yes Figure 2 Structural sectional view;

[0016] Figure 4 It is a simplified schematic diagram of the staples being formed within the staple unit;

[0017] Figure 5 This is a simplified diagram illustrating the arrangement of the staples after they have been fastened together.

[0018] Figure 6 This is a simplified structural diagram of the anastomotic staple after it has been assembled.

[0019] Figure 7 This is a simplified structural diagram of the existing B-type nail after it has been nailed.

[0020] Labeling explanation: 1. Nail seat; 2. Nail slot; 300. Matching nail after nailing; 400. Type B nail. Detailed Implementation

[0021] The present invention will now be described in detail with reference to the accompanying drawings and embodiments:

[0022] like Figure 1-7 The diagram shown is a schematic representation of an embodiment of a staple anvil provided by this utility model:

[0023] A staple holder for anastomosis includes a staple holder 1 as the main body. The staple holder 1 is provided with a plurality of staple forming units corresponding one-to-one with the staples. Each staple forming unit includes two staple forming grooves 2 distributed on the left and right. The center line connecting the staple inlets at the outer ends of the two staple forming grooves 2 forms a reference line extending on the left and right. The staple outlets at the inner ends of the two staple forming grooves 2 are located on the front and rear sides of the reference line, respectively. The bottom surface of the staple forming groove 2 is provided with an arc-shaped surface that guides the staple legs to slide and close the staple from the staple inlet at the outer end to the staple outlet at the inner end.

[0024] The two nailing grooves 2 are set parallel to each other.

[0025] The arc-shaped surface is a concave single-curved surface in the middle, and the distance a from the lowest point of the single-curved surface to the opening of the nail groove 2 is 0.35mm to 0.45mm.

[0026] Preferably, the distance a from the lowest point of the single curved surface to the opening of the rivet groove 2 is 0.4 mm.

[0027] The groove edge of the nailing groove 2 is an isosceles trapezoid;

[0028] The nail inlet of the nail-forming groove 2 is located on the side of the long base of the isosceles trapezoid, and the nail outlet of the nail-forming groove 2 is located on the side of the short base of the isosceles trapezoid.

[0029] The nail outlet of the left nail groove 2 is located in front of the baseline, and the nail outlet of the right nail groove 2 is located behind the baseline.

[0030] Among them, the rear side of the isosceles trapezoid of the left-side nail groove 2 forms an angle α1 with the baseline, and the angle α1 is 15° to 16°.

[0031] Preferably, the included angle α1 is 15.5°.

[0032] The front side of the isosceles trapezoid of the right-side nail groove 2 forms an angle α2 with the baseline, and the angle α2 is 15° to 16°.

[0033] Preferably, the included angle α2 is 15.5°.

[0034] The height h of the isosceles trapezoid on the top surface of the nail groove 2 is 1.7 mm to 2.1 mm.

[0035] Preferably, the height h of the isosceles trapezoid on the top surface of the nailing groove 2 is 2 mm.

[0036] The width b1 of the nail inlet is 0.8 mm to 1 mm.

[0037] Preferably, the width b1 of the nail inlet is 0.9 mm.

[0038] The width b2 of the nail outlet is 0.35mm to 0.45mm.

[0039] Preferably, the width b2 of the nail outlet is 0.4 mm.

[0040] The overall length L of the two nailing grooves 2 is 3.9 mm to 4.1 mm.

[0041] Preferably, the overall length L of the two nailing grooves 2 is 4.0 mm.

[0042] Several stapled units are arranged in multiple rows in a straight line, with stapled units in adjacent rows arranged in a staggered manner.

[0043] The principle behind the excellent anastomosis effect of the staples formed by this invention is roughly as follows:

[0044] The staple includes a staple body and staple legs (this is the structure of most staples on the market). In this invention, the center line connecting the outer ends of the two staple grooves 2 forms a reference line extending left and right. During the staple assembly process, this reference line and the staple body are in the same vertical plane. This allows the staple legs to directly contact the arc-shaped surface of the staple groove 2 through the staple inlet, and bend towards the staple outlet under the guidance of the arc-shaped surface to form a staple. In this invention, the staple outlets at the inner ends of the two staple grooves 2 are located on the front and rear sides of the reference line, respectively. This allows the two staple legs to close and form a staple on the front and rear sides of the staple body (e.g., ...). Figure 6 As shown), the mating nail 300 formed in this way increases the mating area during molding (approximately twice that of the conventionally straight-formed planar B-type nail 400, as shown). Figure 7 As shown in the figure, it has excellent anastomosis effect. Compared with single-row sutures, the anastomosis connection formed by this invention has a more uniform distribution of staples in the tissue, avoiding local dense distribution of staples. This allows the tissue to be evenly wrapped, reduces the chance of inflammation at the anastomosis site, and makes the anastomosis site easier to heal.

[0045] The above description is merely a preferred embodiment of this utility model, but the protection scope of this utility model is not limited thereto. For example, the nail-forming groove 2 can be scaled up proportionally based on its preferred dimensions. Any equivalent substitutions or modifications made by those skilled in the art within the scope of the technology disclosed in this utility model, based on the technical solution and inventive concept of this utility model, should be included within the protection scope of this utility model.

Claims

1. A staple holder, comprising a staple holder (1) as the main body, wherein the staple holder (1) is provided with a plurality of staple forming units corresponding one-to-one with the staples, wherein the staple forming unit includes two staple forming grooves (2) distributed left and right, characterized in that: The center line connecting the two nailing slots (2) at their outer ends forms a baseline extending to the left and right, while the nailing outlets at the inner ends of the two nailing slots (2) are located on the front and back sides of the baseline, respectively. The bottom surface of the nailing slots (2) is provided with an arc-shaped surface that guides the matching nail legs to slide and close the nail from the outer end nailing outlet to the inner end nailing outlet to form the nail.

2. The stapler seat according to claim 1, characterized in that: The two nailing grooves (2) are set parallel to each other.

3. The stapler anvil according to claim 1, characterized in that: The arc-shaped surface is a concave single-curved surface in the middle, and the distance a from the lowest point of the single-curved surface to the groove opening of the nailing groove (2) is 0.35mm to 0.45mm.

4. The stapler seat according to claim 1, characterized in that: The groove edge of the nailing groove (2) is an isosceles trapezoid; The nail inlet of the nail groove (2) is located on the side of the long base of the isosceles trapezoid, and the nail outlet of the nail groove (2) is located on the side of the short base of the isosceles trapezoid.

5. The stapler anvil according to claim 4, characterized in that: The nail outlet of the left nail groove (2) is located in front of the baseline, and the nail outlet of the right nail groove (2) is located behind the baseline. Among them, the rear side of the isosceles trapezoidal groove of the left nail groove (2) forms an angle α1 with the baseline, and the angle α1 is 15° to 16°. The isosceles trapezoidal front side of the groove opening of the right-side nailing groove (2) forms an angle α2 with the baseline, the angle α2 being 15° to 16°.

6. The stapler anvil according to claim 4, characterized in that: The height h of the isosceles trapezoid on the top surface of the nailing groove (2) is 1.7 mm to 2.1 mm.

7. The stapler seat according to claim 4, characterized in that: The width b1 of the nail inlet is 0.8 mm to 1 mm.

8. The stapler anvil according to claim 4, characterized in that: The width b2 of the nail outlet is 0.35mm to 0.45mm.

9. The stapler anvil according to claim 4, characterized in that: The overall length L of the two nailing grooves (2) is 3.9 mm to 4.1 mm.

10. The stapler seat according to any one of claims 1-9, characterized in that: Several stapled units are arranged in multiple rows in a straight line, with stapled units in adjacent rows arranged in a staggered manner.

Images