A trocar sleeve and method of using the inner and outer tubes thereof

Abstract

The invention relates to a trocar sleeve and a method for using the inner and outer tubes thereof, which are mainly suitable for the operation of the abdominal cavity and thoracic cavity of a human body. The casing assembly of the present invention includes a casing lower cover, a sealed cabin and a casing upper cover, and is characterized in that: a locking seat, a locking clip, and circular inner and outer pipes are also provided, and the inner and outer pipes are movably connected , the lock card seat is fixed with the inner tube, and the lock card is fixed on the lock card seat; the outer tube is provided with an outer tube boss, which can move up and down in the chute of the inner tube, and make the lock card extend or retract Advance; the lock card is an elastic part that expands outwards, and is made of memory alloy wire; the inner and outer tube usage method of the present invention is realized by rotating the outer tube so that the lock card is expanded outwards and fixed on the inner cavity wall of the human body. The structure design of the present invention is more reasonable, the casing will not fall off during use, and the use is safer and more reliable.

Description

technical field [0001] The invention relates to a medical puncture device, in particular to a puncture device casing and a method for using the inner and outer tubes thereof, which belongs to the field of medical technology and is mainly suitable for abdominal cavity and thoracic cavity operations of human body. Background technique [0002] At present, the field of minimally invasive surgery, that is, laparoscopic surgery, has been widely used in human abdominal surgery. When in use, after the puncture device punctures the abdomen of the human body, take out the puncture needle, borrow the channel, inject gas into the abdominal cavity through the pneumoperitoneum machine interface of the puncture device, establish an pneumoperitoneum, and then insert a laparoscope, which can be performed under the supervision of the laparoscope. Laparoscopic surgery. [0003] Chinese patent application number 2014102920056 discloses a "puncture device", which includes a sleeve assembly, a ...

AI Technical Summary

Problems solved by technology

However, when it is used in surgery, it is fixed on the inner wall of the abdominal cavity of the human body through the sleeve thread, and the sleeve tube is easy to fall off during the operation, resulting in a series of well-known consequences

[0004] Chinese invention patent application number 2014100692568 discloses a "disposable trocar", which includes a trocar body device, an air-blocking sealing device, a locking device and a puncture cone device, but the trocar with this structure has a gas-blocking device. The sealing device cannot be disassembled, and when there is a large tissue foreign body that needs to be taken out, it cannot pass through, and the scope of application is narrow; it also increases the resistance of the instrument during the surgical operation, and the cost is high; at the same time, it also has the following disadvantages: due to work The principle is that the tissue of the incision is wrapped in the blade-shaped anti-slip holes on the casing. In the application of small-sized casings, the wrapping force is not strong enough, and the casing is easy to fall off; at the same time, there are many structural parts, complicated processes, and high cost.

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