Duplex tissue clip and clip applier

Abstract

A duplex tissue clip is provided with two tissue clamps of a parallel structure; each tissue clamp comprises a V-shaped clamp body integratedly formed by a first arc-shaped clamp arm and a second arc-shaped clamp arm; free ends of each first arc-shaped clamp arm and the corresponding second arc-shaped clamp arm are respectively provided with a clamping hook and a clamping groove; a hinge structure is formed between each first arc-shaped clamp arm and the corresponding second arc-shaped clamp; each V-shaped clamp body is formed when the corresponding first arc-shaped clamp arm and the corresponding second arc-shaped clamp are in a free state; first projections are disposed at positions, close to the clamping hooks, of adjacent inner side surfaces of the first arc-shaped clamp arms; the first projections are connected at the adjacent side surfaces to form a first connecting rod for connecting the two tissue clamps; the two tissue clamps are provided with two clamping grooves corresponding to the clamping hooks; upward projection portions are disposed at adjacent inner side surfaces between the two clamping grooves, and the upward projection portions are connected to form a fourth connecting rod for connecting the two tissue clamps; and the third and fourth connecting rods are supporting ends of a clip applier.

Description

technical field [0001] The present invention relates to an auxiliary medical instrument for surgical operation, especially a clip used for closing blood vessels or tissues during surgical operations, also known as blood vessel clip or ligation clip. Background technique [0002] During laparoscopic surgery, the broken blood vessel in the incision needs to be closed to stop bleeding. Clamping the ruptured vessel with a hemostat and then ligating it with sutures is not suitable for the quick and easy requirements of laparoscopic surgery. Hemostatic tissue clips using polymer materials have been widely used. The tissue clip includes a V-shaped clamp body integrally formed by a first arc-shaped clamp arm and a second arc-shaped clamp arm. The free ends of the first arc-shaped clamp arm and the second arc-shaped clamp arm are hooks and grooves respectively. There is a "hinge" structure between the arc-shaped clamp arm and the second arc-shaped clamp arm. The hinge structure is ...

AI Technical Summary

Problems solved by technology

Typical Chinese patents and patent applications include: CN201110023843, 201310334138 and 201410777554; however, there are still deficiencies in the prior art: although the reliability of the clip (there is a slit on the clip) is already very good, in actual operation, a doctor is usually needed Apply the second clip, sometimes it is difficult to apply the second clip at the position of the stump of the tissue incision. For example, when complete clamping is required or higher reliability is required, the second clip is often used by doctors; endoscopic surgery The front end of the existing clip applier used in surgery (with metal jaws to clamp the prominence and apply force, because the tissue clip width is only 1mm or even narrower) fully wraps the tissue clip, although there is a guide mirror during use (or dedicated image acquisition device) as an observation window

[0010] In the past, the so-called double insurance is actually not safe, because once the dynamic pulse opens one clip, the other clip has no difference in clamping force and non-slip properties compared to the previously opened clip, so It is not safe; in the case of usually using one clip to clamp the blood vessel, it is mostly because the blood vessel stump (cuff length) is too short, or the area available for clamping is too narrow, or the free blood vessel exposed by the doctor's quick operation is not fine, so it cannot be used more , not because it is sufficient to use a

[0011] In addition, the existing clip applicator wraps the clip for clipping, and the clip is about to be clamped. The vision is not clear, and it is impossible to intuitively see whether the blood vessel is clamped. Especially for free, unclean or too thick blood vessels, often appear The phenomenon of "false clipping", the occurrence of intraoperative and postoperative collapse, slippage and other fatal bleeding phenomena, especially postoperative collapse, can easily lead to the death of the patient or secondary surgery caused by infection, which is a medical malpractice

In addition, the tissue clips in the prior art are composed of a hook and a slot, but there is still room for improvement

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