Self-blunting needle assembly for use with a catheter, and cathe

Details Self-blunting needle assembly for use with a catheter, and cathe Self-blunting needle assembly for use with a catheter, and cathe

1989-05-08

1991-04-23

Pellegrino, Stephen C.

Surgery

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

Treating material introduced into or removed from body...

604110, 604170, A61M 532

Patent

active

050096427

ABSTRACT:
A self-blunting needle assembly (10) for use with a catheter (40), and a catheter assembly (50) attained by mounting the self-blunting needle assembly into a catheter are disclosed. The needle (12) includes a needle shaft (14) having a connector (18) thereon and a blunting device (28) including an elongate probe (30) having a retainer (32) thereon. The connector (18) engages the retainer (32) to provide a lost motion connection between the blunting device (28) and the needle (12). The needle assembly (10) is mounted within a catheter (40) by a force fit of the retainer into the hub chamber (42a) of the catheter, with the needle puncture tip (16) protruding beyond the catheter tube tip (46). After injection of the catheter by means of the needle into a patient's vein, manual withdrawal of the needle from the catheter initially shifts the needle relative to the blunting device (28) by virtue of the lost motion connector, thereby causing the elongate probe (30) to extend beyond the needle tip (16) and blunt the needle. Continued withdrawal removes the needle assembly from the catheter.

REFERENCES:
patent: 3923066 (1975-12-01), Francisoud et al.
patent: 4274408 (1981-06-01), Nimrod
patent: 4417886 (1983-11-01), Frankhouser et al.
patent: 4525157 (1985-06-01), Vaillancourt
patent: 4652256 (1987-03-01), Vaillancourt
patent: 4772264 (1988-09-01), Cragg
patent: 4828547 (1989-05-01), Sahi et al.
patent: 4832693 (1989-05-01), Gloyer
patent: 4832696 (1989-05-01), Luther et al.
patent: 4863431 (1989-09-01), Vaillancourt
patent: 4869717 (1989-09-01), Adair

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