Drainage guide needle

Abstract

The invention relates to the technical field of medical equipment, and provides a drainage guide needle. The drainage guide needle comprises a needle head, wherein the needle head is connected with a needle handle through a transition arc; the needle head comprises an inner side cutting edge plane; an outer side cutting edge plane is arranged on one side of the inner side cutting edge plane; the inner side cutting edge plane and the outer side cutting edge plane are asymmetrical; the size of the outer side cutting edge plane is smaller than that of the inner side cutting edge plane; and an operating part is arranged on the needle head. Compared with the conventional prism structure, the drainage guide needle has the advantages that the puncture resistance can be effectively reduced, transverse cutting damage of the conventional needle head to tissues is eliminated, and suturing and healing of a puncture hole are facilitated; the operating part is arranged on the needle head, namely the operating part is arranged at the position behind a needle tip, so that sticking and slipping caused by adhesion of tissue fluid to gloves are overcome after the needle penetrates through the skin of a doctor, the needle is pulled out of the tissues, and the operation is convenient; and in addition, the operating part is also arranged on the needle handle, so that forward pushing and slipping are prevented, the puncture force and accuracy are controlled, the one-time puncture success rate is increased, and tissue damage to a patient is reduced.

Description

technical field [0001] The invention relates to the technical field of medical equipment, in particular to a drainage guide needle. Background technique [0002] Drainage tubes play a very important role in surgical operations. During postoperative catheter drainage treatment, one end of the catheter is generally implanted in the body, and the other end is exposed outside the body for drainage; the drainage tube needs to be passed through a drainage guide needle. Therefore, the drainage guide needle is also an indispensable part in the surgical operation; the drainage guide needle is composed of a needle handle and a needle head, and the drainage guide needle in the prior art mainly has the following structures: [0003] 1) The needle tip is a triangular-shaped needle tip structure: [0004] ①The sharpness of the needle point is not easy to maintain: the needle point is generally protected by a hard soft plastic tube sleeve, the tip of the gun is close to the wall of the tu...

AI Technical Summary

Problems solved by technology

[0004] ①The sharpness of the needle point is not easy to maintain: the needle point is generally protected by a hard soft plastic tube sleeve, the tip of the gun is close to the wall of the tube, and the strength of the tip of the gun is limited due to the material limitation. Increased puncture resistance and more tissue damage to patients during use;

[0005] ②The cutting edge of the needle tip adopts the transverse grinding process, the sharpness is poor, and the puncture resistance is large;

[0006] ③ Different puncture operation methods have different degrees of difficulty in operation and increased trauma to patients: Doctors generally have two puncture operation tendencies—forward piercing and upward piercing. When doctors use forward piercing, the damage to the tissue The wound is generally triangular (or T-shaped), which has great resistance to the forward movement of the needle, and the transverse cutting damage to the tissue (especially muscle) is obvious, and the wound on the skin surface is triangular (or T-shaped) after passing through. ) is very unfavorable to the suture and healing of the wound after the drainage tube is withdrawn; when the doctor uses upward piercing, the wound formed on the tissue is basically linear, and the horizontal cutting of the tissue is less harmful. The wound on the skin surface is linear, which is beneficial Suturing and healing in the later stage, but because the blade of the needle is generally relatively long, when picking through, the longitudinal cutting width of the tissue is often too wide, and even the wound on the skin is too long, resulting in air leakage and puncture failure

[0007] 2) The needle handle adopts a round rod structure; when the doctor is operating, the glove is stained with sticky tissue fluid, so there are problems such as difficulty in grasping the direction of the needle during puncture, easy to turn over, push forward and slip, and difficulty in pulling out the needle tip after it is exposed

In addition, sometimes the doctor needs to adjust the angle of the needle according to the actual puncture situation, but the strength of the needle shaft is too high to be corrected on-site

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