Piercing introducer with tear-off sheath

Abstract

Disclosed in the invention is a puncture guiding device capable of tearing and removing a sheath. The puncture guiding device comprises a casing sheath and a pin embedded into the casing sheath; and the casing sheath and the pin are in integrated modes. The guiding device is characterized in that the two ends of the casing sheath are open; the rear end of the sheath is expanded and is formed by two horn-shaped sheath bodies; grooves are formed in two symmetric sides of a rod body along the length direction; and tearing openings are formed in the grooves. A pair of mutually-matched buckles is arranged at symmetric positions, where the rod body approaches the positions and the two sheath bodies approach each other mutually, of the sheath bodies. The pointed end of the pin is in a shape of a solid cone; and the rear end of the pin is an expanding body matching the sheath bodies of the casing sheath. According to the invention, the structure is simple and the cost is low. Because of the change of the casing sheath structure, the puncture guiding device is suitable for various drainage tubes, especially ones with rear parts with expanding connectors; and the casing sheath can be removed from the wound of a patient in a tearing mode and the implementation is easy to carry out, so that little trauma is caused and thus the pain of the patient suffering from sickness can be substantially reduced.

Description

technical field [0001] The invention relates to the field of medical instruments, in particular to a puncture introducer with a tearable sheath. Background technique [0002] In modern medical treatment, most of the drainage operations are to make small incisions in the chest, bladder, abdominal cavity and other organs through surgery, and then implant the drainage tube through the incision site. This method is not only complicated, but also brings great trauma to the patient. And a certain amount of pain, and to observe the changes in the condition of the patient's incision site in real time, so as to avoid new problems such as cross-infection. Therefore, a new medical method has emerged to achieve drainage—the puncture guide needle, which includes a sheath and a needle core nested in the sheath. After the puncture is completed through the needle core, the internal needle core is taken out. The outer sheath is left, and then the drainage tube is inserted into the sheath to...

AI Technical Summary

Problems solved by technology

In modern medical devices, the rear end of most drainage tubes has an enlarged joint for externally connecting other medical equipment for monitoring and testing. Therefore, when using the aforementioned puncture guide needle, although the drainage tube can be guided through the The needle is implanted in the chest cavity, bladder, abdominal cavity and other organs, but due to the enlarged joint at the back end of the drainage tube, the external sheath cannot be removed smoothly, which limits the use of this type of drainage tube and brings certain troubles to medical staff

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