Catheter assembly with reciprocable obturator

Details Catheter assembly with reciprocable obturator Catheter assembly with reciprocable obturator

1991-09-19

1993-04-13

Rosenbaum, C. Fred

Surgery

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

Treating material introduced into or removed from body...

604166, 604256, A61M 5178

Patent

active

052017125

ABSTRACT:
A catheter assembly with a reciprocable obturator is disclosed which facilitates patency maintenance during intravenous therapy. The assembly includes a catheter having an elongated tubular portion defining a lumen, and an obturator assembly mounted on the catheter. The obturator assembly includes a reciprocable obturator member including an elongated obturator rod telescopically disposed within the catheter lumen. The rod is configured to cooperate with the lumen to inhibit liquid flow into the free end of the catheter. The device can be employed in conjunction with a high molecular weight, viscous fluid, in order to further inhibit ingress of liquid into the catheter.

REFERENCES:
patent: 3856009 (1974-12-01), Winnie
patent: 4798591 (1989-01-01), Okada
patent: 4803999 (1989-02-01), Liegner
patent: 4976697 (1990-12-01), Walder et al.
patent: 5030227 (1991-07-01), Rosenbluth et al.
patent: 5135525 (1992-08-01), Biscoping et al.

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