Injection needle for laparoscopic surgery

Abstract

The invention provides an endoscopic surgery syringe needle comprising a needle head, a deforming segment and a needle body. A medicine delivery opening end of the needle body is the tail end of the needle body and an injection end of the needle head is the front end of the needle head; the deforming segment is located between the tail end of the needle head and the front end of the needle body; the needle head is provided with an annular scale line; one side of the axis of the deforming segment is an energized expansion material and the other side is an energized contraction material; the deforming segment has two states: an energized deformation state and an original state; the deforming segment is a bent tube in the original state, wherein the part of the deforming segment on the outer side of the bending included angle employs the energized contraction material and the part of the deforming segment on the inner side of the bending included angle employs the energized expansion material; in the energized deformation state, the deforming segment is a straight tube or nearly a straight tube; the deforming segment is connected with wires which extend to the tail end of the needle body along the needle body and are externally connected with the positive electrode and the negative electrode of a power source. The endoscopic surgery syringe needle can enter via a surgery inlet and perform injection on different positions of a surgery area, so that the injury of human bodies caused by puncture injection is prevented and the injection depth can be controlled conveniently.

Description

technical field [0001] The invention relates to the technical field of medical equipment, in particular to an injection needle for endoscopic surgery. Background technique [0002] When performing minimally invasive surgery, hysteroscopic surgery, nasal endoscopic surgery, etc., because the surgical location cannot be seen directly, the surgery is usually performed with the help of various observation mirrors, such as laparoscopy, thoracoscopy, hysteroscopy, and nasal endoscopy. Etc., the incision in minimally invasive surgery, the vagina in hysteroscopic surgery, and the nostrils in endoscopic nasal surgery are the surgical entrances. When drug injection is required during surgery, due to the small surgical entrance, the injection position that the needle can reach through the surgical entrance is limited. For the position that cannot be reached through the surgical entrance, the method of external puncture is usually adopted, but this method will cause harm to the human bo...

AI Technical Summary

Problems solved by technology

[0006] The present invention aims at the problem that the existing injection needle cannot simultaneously inject to the front, rear and side walls of the operation site through the operation entrance, and the injection depth cannot be controlled, and develops an injection needle for laparoscopic surgery, which can enter through the operation entrance And inject at different positions in the surgical area, avoiding the damage to the human body caused by puncture injection, and at the same time, the injection depth can be visualized and the injection depth can be controlled conveniently

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