Thoracic and abdominal puncture knife

Abstract

The invention discloses a thoracic and abdominal puncture knife, and belongs the technical field of medical apparatuses. The puncture knife comprises a knife rod body and a knife head which is integrally arranged at one end of the knife rod body and is identical to the knife rod body in diameter, and a knife edge is constituted on the knife head; the puncture knife is characterized in that an easy-to-bend transition section is constituted between the knife rod body and the knife head; and the diameter of the easy-to-bend transition section is 1 / 3-1 / 5 of the diameter of the knife rod body. Angle requirements of doctors, who implement a puncture operation on a patient in clinical, can be satisfied by bending the knife head having the knife edge relative to the knife rod body as required; theoperation can be facilitated, and operating difficulty of the operating doctors can be reduced and puncture efficiency can be improved; and materials can be saved; therefore, the puncture knife is consistent with the spirit of economizing and energy-saving economy which is advocated by the whole society at present.

Description

technical field [0001] The invention belongs to the technical field of medical equipment, in particular to a puncture knife for the chest cavity and abdominal cavity. Background technique [0002] The puncture knife mentioned above is also called a puncture drainage needle or a puncture guide needle, which is a surgical equipment for thoracotomy and abdominal cavity puncture. As far as thoracentesis is concerned, the puncture knife is pierced through the chest wall through the skin and enters the pleural cavity, which is used to extract pleural fluid, pneumothorax, hemorrhage or forceps pleural tissue, intrapleural administration, etc. Disease diagnosis and treatment. [0003] The technical information about the puncture knife can be found in Chinese patent documents, such as the utility model patent authorization announcement number CN201422912Y recommending "a puncture guide needle for minimally invasive surgery" and the invention patent authorization announcement number ...

AI Technical Summary

Problems solved by technology

[0005] Not limited to the puncture knives involved in the patents cited above and the puncture knives currently used in medical clinics generally have the following technical problems: one, because the diameter of the knife head with the blade is the same as the diameter of the knife rod body, especially because the knife head It is on the same axis (that is, on the same straight line) as the knife rod body, so when the surgeon performs a puncture operation on the patient, he cannot operate according to the angle required for the puncture operation. Specifically, the surgeon can only change his limb posture. It is the angle change of the hand holding the puncture knife to meet the angle requirements required for puncture, which not only increases the operating strength of the surgeon, but also makes it difficult to guarantee the desired puncture effect and also affects the puncture speed; Surgery, usually before the operation, according to the patient's posture, puncture site (puncture point) and other factors, it is necessary to bend the knife head, so that a reasonable arc is formed between the knife head and the knife rod body, so as to facilitate the smooth operation of the puncture knife. Piercing into the patient's chest or abdominal cavity, but because the diameter of the knife head is the same as the diameter of the knife body, and because the material of the puncture knife is high-strength stainless steel, it is very difficult to bend the arc

The applicant has noticed that the aforementioned CN301439549S and CN301439550S ​​form a radian on the body of the knife rod, that is, a circular arc bending part is formed on the body of the knife rod, but the circular arc bending part is mechanically formed by the manufacturer of the piercing knife , and cannot fully adapt to the puncture angle of all patients, because the degree of arc formed between the knife head and the knife rod body by the surgeon varies from person to person (patient), and is random; third, due to the blade structure Unreasonable, thus affecting the puncture speed to a certain extent

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