Bleeding stop needle core and biopsy needle

Abstract

The invention discloses a bleeding stop needle core and a biopsy needle. The bleeding stop needle core comprises a positive pole rod, a first insulation sleeve, a negative pole sleeve, an insulation spacer, a second insulation sleeve and a guide wire, wherein the positive pole rod is provided with a major diameter radio frequency end head and a minor diameter electric conduction pillar, the first insulation sleeve sleeves the outer wall of the minor diameter electric conduction pillar, the negative pole sleeve sleeves the first insulation sleeve, the insulation spacer sleeves the first insulation sleeve or the minor diameter electric conduction pillar, two ends of the insulation spacer are respectively pressed against the major diameter radio frequency end head and the negative pole sleeve, the second insulation sleeve sleeves the outer wall of the negative pole sleeve, and the guide wire is used to respectively communicate the positive pole rod and the negative pole sleeve with a radio frequency source. According to the bleeding stop needle core, the positive pole rod and the negative pole sleeve are electrically connected with the radio frequency source through the guide wire, the major diameter radio frequency end head generates radio frequency of corresponding frequency, tissue molecules around a needle passage are vibrated and rubbed at high speed, and generate heat energy, a bleeding stop function is achieved by rapidly shrinking vascular tissue surfaces of a wound surface around the needle passage, and a thermal insulating layer is arranged so as to effectively prevent other tissue from being injured due to heat propagation when the bleeding stop needle core works.

Description

technical field [0001] The invention relates to the technical field of medical devices, in particular to a hemostatic needle core and a biopsy needle. Background technique [0002] Tumor is an abnormal lesion formed by a certain cell in a local tissue losing its normal regulation of its growth at the gene level under the action of various carcinogenic factors, resulting in abnormal clonal proliferation. In recent years, the incidence has gradually increased, and the incidence of The age gradually declines, early detection, correct diagnosis, and timely treatment have an important impact on the prognosis. With the continuous improvement of examination methods and methods, the correct rate of diagnosis has gradually increased, but there are still a large part of tumors that do not have typical imaging features, making diagnosis difficult. A correct diagnosis requires a combination of clinical, imaging, and pathological factors. Among them, pathological diagnosis plays a key ...

AI Technical Summary

Problems solved by technology

It solves the problem of difficulty in hemostasis after puncture in the prior art, and the problem that the tumor tissue is easily brought out along the needle track when the needle is withdrawn, resulting in the spread of the tumor

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