Endarterectomy scalpel

Abstract

The invention discloses an endarterectomy scalpel which comprises a sucking and shearing mechanism and a rear blocking mechanism. The sucking and shearing mechanism comprises a blood plunger pump, a first air bag, a dual-shaft output driving part, a rotary shearing assembly and a hollow displacement screw. The first air bag is communicated with the blood plunger pump. The rotary shearing assemblysleeves the displacement screw and is connected with the dual-shaft output driving part. The displacement screw is connected with the dual-shaft output driving part and communicated with the first airbag. The rear blocking mechanism comprises a rear blocking body, a second air bag, a rear flow dividing shaft and a depressurizing valve. The rear flow dividing shaft is communicated with the secondair bag through a first telescopic connecting pipe. The depressurizing valve is communicated with the second air bag. The effective contact area between the second air bag and a blood vessel wall is larger than the effective contact area between the first air bag and the blood vessel wall. The endarterectomy can be realized, meanwhile the normal blood circulation of a blood vessel is kept, the window time of the surgery is prolonged, the surgery difficulty and surgery risk are reduced, continuous operation can be conducted, and the automation degree is high.

Description

technical field [0001] The invention relates to the technical field of surgical instruments, in particular to a surgical knife for vascular intimal stripping. Background technique [0002] Carotid endarterectomy (CEA) is a surgical treatment to prevent stroke by removing thickened carotid intimal atherosclerotic plaque. The existing surgical methods are to manually tie the carotid arteries at both ends of the lesion area manually, and then incise to remove the thickened carotid intima atherosclerotic plaque. Because the blood supply of the carotid artery needs to be cut off during this operation, and the human brain cannot tolerate the ischemic environment for a long time, so the operation window period is greatly compressed, and the doctor's skills and psychological quality are very high, resulting in surgical effects. Unsatisfactory; at the same time, the large-scale incision of blood vessels also increases the wound surface, resulting in prolonged suturing time, which ad...

AI Technical Summary

Problems solved by technology

Because the blood supply of the carotid artery needs to be cut off during this operation, and the human brain cannot tolerate the ischemic environment for a long time, so the operation window period is greatly compressed, and the doctor's skills and psychological quality are very high, resulting in surgical effects. Not ideal; at the same time, the large-scale incision of blood vessels also increases the wound surface, resulting in prolonged suture time and adverse effects on postoperative recovery and nursing care of patients

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