Protractor matched with puncture needle

Abstract

The invention discloses a protractor matched with a puncture needle. The protractor comprises a puncture needle, a protractor outer frame, a protractor inner slot, a graduated scale, a pointer, a solid metal ball, a fixed sleeve, a bolt, a gasket, a pointer ring, a fixed nut and a pointer rotating shaft. The protractor is matched with the puncture needle, and the inclined angle of the puncture needle can be directly found from the protractor when the protractor is used, so that the accuracy of the actual inclined angle of the puncture needle during puncture can be greatly improved, injury of important tissues, blood vessels and trachea of a human body can be effectively avoided, and the success rate of puncture can be improved; the pointer height can be increased due to the gasket, friction between the pointer and the protractor outer frame can be effectively avoided, and the pointer has a relatively high sensitivity; due to the solid metal ball, the solid metal ball moves under the action of gravity when the protractor is inclined, the pointer is driven to rotate, and the pointer is always kept in a vertical state, so that the pointer working stability of the protractor can be greatly improved.

Description

technical field [0001] The invention relates to a protractor, in particular to a protractor used in conjunction with a puncture needle, and belongs to the technical field of medical instruments. Background technique [0002] Lung cancer is currently one of the major diseases that seriously endanger human health and life. The incidence rate of lung cancer ranks first among all kinds of malignant tumors in the world today. Surgical operations are becoming more and more mature, but most patients are diagnosed in the middle and advanced stages, losing the best time for surgery, and most lung cancer patients are elderly patients, many patients cannot tolerate traditional lobectomy, and can only choose radiotherapy and chemotherapy; radiotherapy The permanent interstitial implantation of nuclide 125I particles for the treatment of malignant tumors is an emerging method of tumor brachytherapy, which refers to the implantation of radioactive sources into tumors or tissues infiltrate...

AI Technical Summary

Problems solved by technology

[0002] Lung cancer is currently one of the major diseases that seriously endanger human health and life. The incidence rate of lung cancer ranks first among all kinds of malignant tumors in the world today. Surgical operations are becoming more and more mature, but most patients are diagnosed in the middle and advanced stages, losing the best time for surgery, and most lung cancer patients are elderly patients, many patients cannot tolerate traditional lobectomy, and can only choose radiotherapy and chemotherapy; radiotherapy The permanent interstitial implantation of nuclide 125I particles for the treatment of malignant tumors is an emerging method of tumor brachytherapy, which refers to the implantation of radioactive sources into tumors or tissues infiltrated and invaded by tumors, and the continuous radiation emitted by miniature radioactive sources. Low-energy γ-rays can cause the tumor tissue to be destroyed to the greatest extent and cause no damage or only minimal damage to normal tissue; many hospitals at home and abroad have used it for early-stage tumors that cannot tolerate surgery and tumors that cannot be completely surgically removed. treatment method

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