Thrombectomy instrument and thrombectomy device

Abstract

The invention provides a thrombectomy instrument and a thrombectomy device, and relates to the technical field of medical instruments. The thrombectomy instrument comprises a far-end fixing end, a first near-end fixing end, a second near-end fixing end and a thrombus extraction bracket; the thrombus extraction bracket includes an inner bracket body and an outer bracket body which are connected at the far-end fixing end; the near end of the outer bracket body is connected with the first near-end fixing end, the near end of the inner bracket body is connected with the fixing end of the second near-end fixing end, and the second near-end fixing end is connected with the first near-end fixing end in a sliding mode so that the inner bracket can move relative to the outer bracket body; the thrombectomy device includes a pre-installation sheath, a delivery catheter, an operation controlling rod and the thrombectomy instrument; the operation controlling rod and the thrombectomy instrument are connected, and the installed thrombectomy instrument and the operation controlling rod enter the delivery catheter through the pre-installation sheath, sent to the position of thrombus through the delivery catheter and then released. The problems that an existing thrombectomy instrument can not hold the thrombus in the thrombus extraction process and the thrombus can not be extracted and the thrombus is easy to fall off to cause secondary embolisms when the thrombectomy device is used for thrombus extraction are alleviated.

Description

technical field [0001] The invention relates to the technical field of medical devices, in particular to a thrombus retriever and a thrombus retriever. Background technique [0002] At present, cardiovascular and cerebrovascular diseases often plague many middle-aged and elderly people, especially thrombotic diseases, including cerebral thrombosis or other parts of the blood clots. If not treated in time, it is easy to cause serious sequelae or even death. For thrombosis, the current solutions include drug thrombolysis and mechanical thrombectomy, as follows: [0003] There are two kinds of drug thrombolysis, one is to inject the thrombolytic agent directly into the venous blood vessel, that is, intravenous thrombolysis, and the other is to inject the thrombolytic agent into the thrombus in the blood vessel through a superselective catheter, and instantly form a small blood vessel at the thrombus. High thrombolytic agent concentration speeds up the dissolution rate of throm...

AI Technical Summary

Problems solved by technology

[0006] The purpose of the present invention is to provide a thrombus remover and a thrombus removal device, so as to alleviate the problem that the thrombus in the prior art cannot be firmly caught in the thrombus during the thrombus removal process and is easy to fall off, and to effectively alleviate the thrombus. There are problems with the large size of the thrombus retriever in the existing technology and limited use

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