Dual-functional linear cutting suture instrument for laparotomy laparoscopic-assisted surgery

Abstract

The invention discloses a dual-functional linear cutting suture instrument for laparotomy laparoscopic-assisted surgery. The suture instrument comprises a shell, a support, a cutting and suturing component, a positioning push rod, a positioning push button, a reset component, a pre-percussion push rod, a percussion push rod, a percussion handle, a pre-percussion handle, a percussion push board and a supporting ring, wherein the cutting and suturing component comprises a supporting body, a first positioning needle inserted in the upper part of the supporting body, a second positioning needle inserted in the lower part of the supporting body, staple cartridges and a cutting blade which are arranged at the front end of the supporting body, and suturing staples positioned in the staple cartridges; the cutting blade is a linear blade; the two staple cartridges are positioned at two sides of the cutting blade, and the staple feeding surfaces of the two staple cartridges are rectangular planes; the support is a rectangular block with a U-shaped straight slot; the shell is a cylindrical body, a fixed handle is arranged on the lower part of the rear end of the shell; the pre- percussion push rod and the percussion push rod are cylindrical bodies, the inner diameter of the pre-percussion push rod is more than the outer diameter of the percussion push rod, the pre-percussion push rod is positioned in the cavity of the shell, and the percussion push rod is positioned in the inner hole of the pre-percussion push rod.

Description

technical field [0001] The invention belongs to medical instruments, in particular to a dual-purpose linear cutting stapler for laparotomy and laparoscope-assisted surgery. Background technique [0002] With the in-depth study of pathogenesis and biological behavior, cardiac cancer is increasingly accepted by scholars as an independent disease. For siewert II and III cardia cancer, most scholars advocate the use of transabdominal and transdiaphragmatic hiatus extended gastrectomy instead of transthoracic surgery. However, the biggest difficulty in enlarged gastrectomy through the diaphragmatic hiatus is the reconstruction of the digestive tract. The traditional purse-string clamp method to complete the purse-string suture of the broken end of the esophagus and place the anvil in the narrow inferior posterior mediastinum has considerable advantages. The difficulty of operation and the risk of tearing the esophagus make it more difficult to adapt to laparoscopic anastomosis. ...

AI Technical Summary

Problems solved by technology

Among them, manual suture is difficult to be widely promoted due to high technical difficulty, and various side-to-side anastomoses are difficult to achieve high-level separation of the esophagus in the mediastinum and complete anastomosis

The common problem with the use of Orvil and other double anastomosis techniques is that it is difficult to avoid pushing the esophagus forward when using a linear cutting stapler for clipping the esophagus, so that the cutting line of the esophagus is usually significantly wider than the esophagus The diameter of the esophagus (usually above 4cm), and it is difficult to avoid oblique cutting of the esophagus

Although the anastomosis of the esophagus in the mediastinum with the stomach or jejunum can be completed using the arc-shaped cutting closer (Kaitu), there is also the problem that the staple cabin staple line at the front end is too long, resulting in a non-"full-mouth" anastomosis. There are the following problems: the two corners of the arc-shaped stapler cannot be completely included in the cutting area of ​​the circular stapler; the head end is too large to penetrate into the deep and narrow posterior mediastinum; it cannot be used without air tightness. in laparoscopic surgery

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