Asymmetric arrangement method of staples for surgical anastomosis and surgical stapler

Abstract

The invention discloses a suture needle asymmetric arrangement method for surgical anastomosis and a surgical anastomat. A first suture needle row comprises a plurality of first suture needles, and a second suture needle row comprises a plurality of second suture needles; on a surface parallel to the first suture needle row, the projection of the central line of the first suture needle at least partially overlaps with the projection of the second suture needle which is nearest to the first suture needle; and on a surface parallel to the second suture needle row, the projection of the central line of the second suture needle at least partially overlaps with the projection of the first suture needle which is nearest to the second suture needle. A needle bin of the anastomat is provided withat least two needle hole rows, wherein the first needle hole row comprises a plurality of first needle hole, and the second needle hole row comprises a plurality of second needle holes; on a surface parallel to the first needle hole row, the projection of the central line of the first needle hole at least partially overlaps with the projection of the second needle hole which is nearest to the first needle hole; and on a surface parallel to the second needle hole row, the projection of the central line of the second needle hole at least partially overlaps with the projection of the first needle hole which is nearest to the second needle hole.

Description

technical field [0001] The invention relates to an asymmetric arrangement method of staples for surgical anastomosis and a surgical stapler. Background technique [0002] The endoluminal linear cutting stapler is a very important surgical instrument in laparoscopic surgery. The use of this instrument can reduce the operation time and improve the quality of the operation. Many digestive tract reconstruction operations must have this instrument to complete. [0003] Surgeons pay considerable attention to bleeding problems in application. Analysis of the main causes of bleeding after staples will reveal that if the closure height of the staples is too high to compress the large blood vessels in the tissue contained in the staple circle, it will cause bleeding at the cutting edge, and the A closure height that is too low can cause compression injury bleeding to the tissue. Sometimes the height of the staples meets the requirements for hemostasis, but in many cases there is loc...

AI Technical Summary

Problems solved by technology

The current method is difficult to avoid the bleeding at the incisal end, and there are still hemostatic weaknesses on the staple line, which mainly appear in two places: 1. The gap between the two staples; 2. The gap between the two forming rings of the "B"-shaped staple gap

[0004]The current commonly used arrangements are double-row symmetrical staggered or three-row symmetrical staggered, but neither of these two arrangements can effectively block the above two The running blood vessels in the gap, as shown in attached Figure 1 Two rows of staples are symmetrically staggered, the size of the first staples 100 and the second staples 200 are the same, and two adjacent second staples 200 are symmetrical about the symmetry plane of the first staples 100 behind them , while two adjacent first staples 100 are symmetrical about the symmetry plane of the second staple 200 in front of them, the gap area between the two loops of the first staples 100 is the first loop gap 12, the second The gap area between the two staple rings of the staple 200 is the second staple ring gap 22, although the first staple 100 and the second staple 200 can fill the gap between the adjacent staples of the other side, but in its own second Loopholes still exist at the first nail ring gap 12 and the second nail ring gap 22

The three-row symmetrical staggered structure is better, but squeezing the tissue as a whole to achieve the purpose of hemostasis will easily cause tissue compression damage and cause scar healing, and the closure of three rows of staples is not good for nutrient delivery to the incisional margin of

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