One piece vessel dilator/catheter sheath introducer

Details One piece vessel dilator/catheter sheath introducer One piece vessel dilator/catheter sheath introducer

1994-03-21

1995-03-07

Yasko, John D.

Surgery

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

Treating material introduced into or removed from body...

604264, A61M 5178

Patent

active

053953410

ABSTRACT:
The combined dilator/catheter sheath introducer is adapted to be mounted to an outlet from a housing of a catheter sheath introducer assembly. The introducer comprises an elongate tubular member including a proximal portion which is relatively stiff and which does not change shape with changes in temperature above and below the typical human body temperature and a tapered distal portion which is made of a material that has a temperature dependent memory and which changes shape when the temperature thereof is increased to body temperature so that the tapered distal portion can change from its first tapered shape to an expanded generally cylindrical shape with a diameter close to the diameter of the proximal portion.

REFERENCES:
patent: 4000739 (1977-01-01), Stevens
patent: 4596563 (1986-06-01), Pande
patent: 4798594 (1989-01-01), Hillstead
patent: 4874378 (1989-10-01), Hillstead
patent: 4921479 (1990-05-01), Grayzel
patent: 4950257 (1990-08-01), Hibbs et al.
patent: 4994027 (1991-02-01), Farrell
patent: 5011478 (1991-04-01), Cope
patent: 5066285 (1991-11-01), Hillstead
patent: 5226899 (1993-07-01), Lee et al.
patent: 5281677 (1994-01-01), Onwonaka et al.
patent: 5292311 (1994-03-01), Cope

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