Cannula needle for catheter

Details Cannula needle for catheter Cannula needle for catheter

1981-06-08

1983-03-22

Apley, Richard J.

Surgery

Respiratory method or device

Ozone or ion generation

128221, A61M 500

Patent

active

043771653

ABSTRACT:
A cannula needle for a catheter is provided from flat metal sheet blank stock. A groove of controlled depth is formed on the metal sheet which is then rolled to produce a hollow barrel having a slit parallel to the longitudinal axis; the barrel is then cut into individual needles. Gripping wings are then welded to each needle on either side of the slit in a separate operation.
In use, when the wings are flexed, the needle will easily split in half along the groove. This enables the cannula to be separated from the catheter.

REFERENCES:
patent: 3124872 (1964-03-01), Knodel, Jr.
patent: 3330278 (1967-07-01), Santomieri
patent: 3359978 (1967-12-01), Smith
patent: 3592193 (1971-07-01), Higgins
patent: 3596658 (1971-08-01), Lange
patent: 3651807 (1972-03-01), Huggins
patent: 3766915 (1973-10-01), Rychlik
patent: 4243495 (1981-01-01), Trott

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