Piston push rod positioning pin of guide thread imbedding device

Abstract

The invention relates to a locating pin of a piston push rod of a guide wire introducer, which is composed of the piston push rod, the locating pin, a piston bush and a connecting sleeve of a pinhead; the locating pin (2) is arranged at the piston push rod (1); and a track (9) is arranged at the piston push rod (1); the locating pin (2) is arranged at the track (9); a track slot is arranged in the locating pin (2), which is identical with the track (9) completely; the locating pin (2) slips at the track (9); two parallel and symmetrical screens (8) are arranged at both sides of the track (9) at the piston push rod (1); the two screens are thrust aside so as to limit the piston push rod (1) to enter into a cavity of the piston when the locating pin (2) is moving forwards; when the locating pin (2) is moving backward, the action of the screens (2) at the piston push rod (1) is disappeared, so as to allow the piston push rod (1) to enter into the cavity of the piston sleeve (3); the role of the locating pin of the piston push rod is to keep a negative pressure generated by the guide wire introducer for an artery and a vein in a deep part by a pre-negative pressure, so as to facilitate a doctor to place a catheter in the artery and the vein in the deep part easily; the locating pin has the advantages of rational design, simple structure and effective use.

Description

Technical field: [0001] The invention belongs to medical appliances, in particular to a piston push rod positioning bolt device of a guide wire inserter. Background technique: [0002] The push rod positioning plug is a structure of the pre-negative pressure deep arteriovenous guide wire inserter. If the positioning plug device is installed, the negative pressure generated by the pre-negative pressure deep arteriovenous guide wire inserter will be automatically released by the push rod. If it enters the piston chamber and disappears, it cannot play the role of automatically displaying the position of the puncture needle tip and convenient operation of the pre-negative pressure deep arteriovenous guidewire inserter, which will increase the difficulty for medical staff during the operation, bring unnecessary troubles, and bring Unnecessary suffering for the patient. Invention content: [0003] The purpose of the present invention is to provide a guide wire inserter piston p...

AI Technical Summary

Problems solved by technology

[0002] The push rod positioning plug is a structure of the pre-negative pressure deep arteriovenous guide wire inserter. If the positioning plug device is installed, the negative pressure generated by the pre-negative pressure deep arteriovenous guide wire inserter will be automatically released by the push rod. If it enters the piston chamber an

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