Medical operation sheath

Abstract

The invention discloses a medical operation sheath, and belongs to the field of medical apparatuses, which aims at solving the problem of easiness in pain and damage in the catheter inserting or plugging process of the prior art. The medical operation sheath comprises a curved tubular sheath body, wherein the front part and the back part of the curved tubular sheath body are penetrated through, the sheath body comprises an inner wall layer and an outer layer, the inner wall layer and the outer wall layer are made of medical hard material, the peripheries of the inner wall layer and the outer wall layer are sealed to form a hollow sac cavity, and the sheath body is provided with a valve which is communicated with the sac cavity. The medical operation sheath has the advantages that by utilizing the characteristic that the curved tubular sheath body can be retracted after expanding, the risk of easiness in pain and injury in the catheter inserting or plugging process is reduced, and the safety and convenience of the medical operation sheath are improved.

Description

technical field [0001] The invention belongs to the field of medical instruments, and relates to a medical body cavity pipeline inserter, more specifically, a medical operation sheath. Background technique [0002] Endoscopic operation is widely used clinically, and has the advantages of less damage and faster postoperative recovery. Before the operation, it is often necessary to establish a large enough channel in advance with the help of an operating sheath, and then enter the body through the cavity inside the operating sheath for operation. [0003] At present, the commonly used channel establishment method is external expansion, that is, a thin guide wire is first inserted as a guide, and then a sheath with a fixed lumen size is placed along the guide wire, and then the guide wire is withdrawn, and the channel The build is complete. This method has the following disadvantages: first, because the sheath is wrapped around the guide wire, when the sheath is placed along ...

AI Technical Summary

Problems solved by technology

This method has the following disadvantages: first, because the sheath is wrapped around the guide wire, when the sheath is placed along the guide wire, the sheath wall will directly rub against human tissue, which may easily cause tissue damage; second, the diameter of the sheath is relatively large , to forcibly expand the human cavity and tissue greatly, causing great pain to the patient

[0007] In the above two patent documents, gas or liquid is injected into the airbag, and the expansion of the airbag is used to expand the operation space. The disadvantage is that the diameter of the operating sheath cannot be changed, and the operating sheath is used to establish a large enough channel. It is necessary to ensure that the diameter of the operating sheath is large enough, but the larger the diameter of the operating sheath, the more serious the pain and injury caused by catheterization or extubation

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