Puncture needle for epidural space

Abstract

The invention discloses a puncture needle for an epidural space, which comprises a needle body, a needle core and a water containing device. The needle core is sleeved in the needle body, and the water containing device is installed at the tail portion of the needle core. The tail end of the needle core is a conical body with a large lower end a small upper end, the front end of the conical body is a ring face, and a connection body and a core body are sequentially arranged at the front end of the ring face. The core body comprises a straight rod and an arc elbow at the front end of the straight rod, the needle core is provided with a longitudinal water cavity, an outer inclined plane corresponding to a through hole till the arc elbow is arranged on the water cavity at the position of the arc elbow, and a film is attached to the outer inclined plane. The water containing device comprises a connection sleeve, a silica gel capsule and a plastic capsule. The puncture needle uses continuous shrinkage of the silica gel capsule to judge whether a needle point enters the epidural space to stop punching, thereby overcoming difference in touch sensitivity of different operators, bringing great convenience to operators, lightening metal stress in operation, importantly reducing pains of repeated punch on patients and avoiding life risks of the patients caused by endorhachis punching.

Description

technical field [0001] The invention belongs to the field of medical devices, in particular to an epidural cavity puncture needle for automatically displaying the position of the human epidural cavity. Background technique [0002] Epidural block anesthesia is currently widely carried out, and epidural puncture must be performed. When needle puncture is used now, it is judged that the needle tip has reached the epidural space entirely by the sense of falling when the anesthetist operates. Then use a smooth glass syringe, push the syringe with slight force, and push a small amount of saline into the dural space to verify whether the puncture needle tip is indeed in the epidural space. [0003] It is difficult to accurately judge that the needle tip has reached the epidural space in the current operation. Because: this operation is performed by different anesthetists, and everyone has different hand sensitivity, especially for people with low hand sensitivity, it is more dif...

AI Technical Summary

Problems solved by technology

[0003] The current operation is difficult to accurately judge that the needle tip has reached the epidural space

Because: this operation is performed by different anesthetists, and everyone has different hand sensitivity, especially for people with low hand sensitivity, it is more difficult to accurately judge

Moreover, the tissue structure of patients of different ages and genders is different; the epidural space is very small, and a little carelessness may puncture the dura mater and cause puncture failure, and even cause epidural hematoma, which may even be life-threatening

Images