Needle penetration indicator and guide

Details Needle penetration indicator and guide Needle penetration indicator and guide

1985-07-15

1987-05-05

Rosenbaum, C. Fred

Surgery

Means for introducing or removing material from body for...

Treating material introduced into or removed from body...

604164, A61M 500

Patent

active

046628703

ABSTRACT:
A device for indicating the penetration of a needle into a vein, artery, lumen, or other cavity in a patient's body includes a filament that is moved through the needle toward its sharpened end. As the needle is inserted through bodily tissue, the distal end of the filament is retained by the tissue at the needle's sharpened end. The filament is loaded with compressive force so that the distal tip is moved through the end of the needle when the end enters a space. Penetration is indicated by the sudden movement of a visible indicator attached to the filament that is caused when the retention of the filament's distal tip is released by the penetration of the needle's end into the space.

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