A microvascular stapler

Abstract

Disclosed is a microvascular anastomat. The microvascular anastomat is characterized in that the microvascular anastomat comprises two cannulas same in diameter, a sliding rod, an anastomosis nail anda nail base; each cannula is a tubular member formed by splicing two arc tube sheets in a hinged mode, a flanging arranged at the periphery of a tube opening in one end of each cannula, and a plurality of negative pressure holes are formed in the flangings around the tube opening; the sliding rod is a rod-shaped member, and the outer walls of the two cannulas are both connected with the sliding rod in a symmetrical and sliding mode, wherein the flangings of the two cannulas are opposite to each other; the nail base is a semi-annular member and is fixedly arranged on the sliding rod and located between the two cannulas; the main body of the anastomosis nail is an annular member, the annular member is fixedly provided with a plurality of pins parallel to the central axes of the cannulas, the middle of each pin is fixed to the annular member, and the whole anastomosis nail on the annular member is fixed on the nail base. The microvascular anastomat is simple in structure, the inner membrane eversion of microvessel is maintained after anastomosis, the contact area between the anastomosis nail and the micorvessel after an operation is small, and the risk of postoperative vascular embolism is greatly reduced.

Description

technical field [0001] The invention relates to the field of medical instruments, in particular to a microvessel stapler, which is suitable for anastomosis of microvessels in hand and foot surgery. Background technique [0002] For completely severed fingers, microscopic finger replantation surgery involves the anastomosis and repair of the digital arteries and veins. Finger arteries and veins are microvessels with a diameter of about 1 mm. The usual anastomosis method is manual suturing under a microscope, which requires high suturing skills and is difficult for doctors. The anastomosis effect is difficult to guarantee, and the suture time is long. Usually, it takes about 30 minutes to anastomose a microvessel, which prolongs the microscopic severed finger. Total operating time for implant surgery. Moreover, manual suturing can also damage the intima of the blood vessel, and even cause thrombosis. [0003] At present, there are some vascular staplers on the market, but m...

AI Technical Summary

Problems solved by technology

[0004] The present invention provides a microvascular stapler, which aims to solve the problems of complex structure, large residual area after operation and easy occurrence of vascular embolism in the current vascular stapler.

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