Safety catheter

Details Safety catheter Safety catheter

1995-06-07

1996-12-17

Yasko, John D.

Surgery

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

Treating material introduced into or removed from body...

604192, A61M 500

Patent

active

055848095

ABSTRACT:
A safety catheter has a needle extending from a needle assembly. A needle point lock has a housing, a locking arm with a hook extending outside of the housing and a rear tab. A wheel within the housing is pushed against a ramp surface and the rear tab of the locking arm, by a spring. The needle extends through the housing and a hole or slot in the locking arm, and into the catheter. The hub of the catheter is held against the housing by the hook on the locking arm, until the needle is withdrawn into the housing, releasing the locking arm and allowing the hook to separate from the catheter hub. After the point of the needle has been withdrawn into the housing, it cannot be pushed back out as the needle slot moves out of alignment with the needle point. The needle also cannot be withdrawn from the back of the housing as the tab on the locking arm moves to allow the wheel to engage the needle with a wedging action. The catheter cannot be accessed until the needle point is withdrawn and safely locked within the housing.

REFERENCES:
patent: Re34416 (1993-10-01), Lemieux
patent: 4728321 (1988-03-01), Chen
patent: 4747831 (1988-05-01), Kulli
patent: 4798587 (1989-01-01), Willoughby
patent: 4986811 (1991-01-01), Thead et al.
patent: 4995871 (1991-02-01), Sasaki et al.
patent: 5187850 (1993-02-01), McCammon et al.
patent: 5195983 (1993-03-01), Boese
patent: 5279581 (1994-01-01), Firth et al.
patent: 5322517 (1994-06-01), Sircom et al.
patent: 5328482 (1994-07-01), Sircom et al.
patent: 5334158 (1994-08-01), McLees
patent: 5411486 (1995-05-01), Zadini et al.
patent: 5417659 (1995-05-01), Gaba

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