Novel endoscope object taking bag and delivery system

Abstract

The invention discloses a novel endoscope object taking bag and a delivery system. The novel endoscope object taking bag comprises a flexible bag, an elastic silk, a connector and a sliding block. The elastic silk movably penetrates through a through hole at an open end of the flexible bag. The elastic silk can movably penetrate through a through hole of the sliding block, and the sliding block can move along the elastic silk. When a relative distance between the sliding block and the connector is increased, the elastic silk is furled step by step by using the sliding block as an obligatory point, so as to furl a bag mouth of the flexible bag. When the relative distance between the sliding block and the connector is reduced, the elastic silk is unfolded step by step by using the sliding block as the obligatory point, so as to unfold the bag mouth of the flexible bag. The delivery system has a sleeve structure consisting of an outer sheath and an inner sheath. According to the novel endoscope object taking bag and the delivery system, the bag mouth of the novel endoscope object taking bag not only can be opened conveniently in a human body, but also can be closed conveniently, and particularly can be released in the body through a tiny endoscope pipeline, so that an excised sample is taken out, and the defects that the endoscope object taking bag in the prior art cannot be opened after the bag mouth is sealed and is difficult to be delivered through a tiny pipeline are overcome.

Description

technical field [0001] The invention relates to a minimally invasive surgical instrument, in particular to an instrument for excision and tissue removal under laparoscopic surgery, such as an endoscopic object extraction bag. Background technique [0002] Endoscopic surgery is a minimally invasive surgery performed through small incisions. This type of surgery has small incisions, less postoperative pain, and faster recovery, so it has been more and more widely used. However, in the implementation of such operations, how to safely take out the surgically resected large biological tissues through small incisions is a difficult problem encountered in the further development of endoscopic surgery; When liquid tissue or malignant tumor tissue remains in the body, fragmented tissue or overflowing fluid can easily lead to infection, complications, or the spread of cancer cells, endangering other healthy tissues and even the safety of patients. [0003] In order to solve the techn...

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Problems solved by technology

For another example, when the resected polyps and other diseased tissues are taken out through digestive endoscopy, or when the resected polyps and other diseased tissues are taken out through endoscopes such as enteroscopy, nephroscope or laryngoscope, since it can only be delivered through a small diameter such as 3mm or 1mm diameter , into the human body, there is also the problem of opening the mouth of the retrieval bag, and the endoscopic retrieval bag of the prior art cannot meet these requirements

[0007] Another shortcoming of the prior art endoscopic retrieval bag is that it needs to pass through a 10mm or 12mm trocar (Trocar) or incision to deliver the endoscopic retrieval bag into the human body, and many endoscopic operations need to deliver the extraction belt into the human body through smaller incisions or instruments, such as 5mm, or even 3mm, or 1mm, etc., in order to achieve more minimally invasive and safer purposes, while the existing Technical endoscopic retrieval bags cannot meet this clinical requirement

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