Flexible injury-preventing spiral steel wire reinforced anesthetic catheter and preparation method thereof

Abstract

The invention provides a flexible injury-preventing spiral steel wire reinforced anesthetic catheter and a preparation method thereof. The anesthetic catheter comprises a catheter and a catheter joint, the catheter comprises a catheter body and a catheter head, one end of the catheter body is connected with the catheter joint in an insertion manner while the other thereof is connected with the catheter head, the catheter head gradually becomes from soft to hard from the front end of the catheter head to the catheter body, a spiral steel wire is arranged in the wall of the catheter body, and a plurality of medicine outlet holes are formed in the end, connected with the catheter head, of the spiral steel wire. The flexible injury-preventing spiral steel wire reinforced anesthetic catheter has the advantages that the anesthetic catheter is reasonable in structure and novel in design, and the flexible catheter head can bend and put into the body easily without injuring tissues and endorhachis easily, so that operative complications are avoided; the spiral steel wire is arranged inside the catheter body and cannot be compressed during use, so that a smooth passage and good anesthetic effects are achieved; the anesthetic catheter is capable of protecting spinal epidural cavity nerves from being compressed after being put into the body, thereby being high in safety and comfort level.

Description

technical field [0001] The invention belongs to the technical field of medical anesthesia apparatus, and in particular relates to a flexible anti-damage spiral steel wire reinforced anesthesia catheter and a preparation method thereof. Background technique [0002] The epidural nerve block in the prior art is a widely used anesthesia method in clinical practice, and has the advantages of simple operation, low cost, easy management during the operation, and convenient epidural analgesia after the operation. The main component is the anesthesia catheter. The traditional anesthesia catheter is made of a transparent catheter and a catheter connector. Since the catheter is made of plastic, it is easy to be crushed or folded into a dead angle during operation, resulting in the passage being blocked and the anesthesia effect is poor. When the hardness of the catheter material is high, the catheter It is easy to be inserted into the human body, but the flexibility is poor, and it i...

AI Technical Summary

Problems solved by technology

The traditional anesthesia catheter is made of a transparent catheter and a catheter connector. Since the catheter is made of plastic, it is easy to be crushed or folded into a dead angle during operation, resulting in the passage being blocked and the anesthesia effect is poor. When the hardness of the catheter material is high, the catheter It is easy to be inserted into the human body, but the flexibility is poor, and it is easy to puncture tissue blood vessels, nerves, and even pierce the dura mater. The phenomenon of blood vessel damage is particularly prominent, and the safety is poor; when the hardness of the catheter material is low, the flexibility is high, but the catheter is not easy. It is inserted into the epidural space, and it is easy to bend or even knot after insertion, so that the catheter cannot be taken out, and the operation is time-consuming and laborious; the tissue in the epidural space where the epidural anesthesia catheter is finally placed is soft and rich in nerves. It is easy to compress the nerve in the epidural space after the traditional catheter is placed, resulting in poor patient comfort

[0003] The spiral steel wire of the traditional spiral steel wire reinforced catheter is directly in contact with the liquid medicine. Since the spiral steel wire needs to be lubricated with mineral oil during the winding process, the gap between the spiral steel wire needs to be cleaned and dried before the catheter is produced, and it is difficult to clean. The production process The space between the middle spiral steel wire and the cannula is easy to accumulate dust and pollution, and eventually enters the spinal cord cavity of the human body with the medicinal liquid, resulting in many sequelae

The spiral steel wire is directly in contact with the liquid medicine, and its surface is rough, which is not conducive to the circulation of the liquid medicine, the flow rate is reduced, and the liquid medicine enters the gap between the spiral steel wires, and the residual amount is not easy to control

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