Inflation device for angioplasty catheter

Details Inflation device for angioplasty catheter Inflation device for angioplasty catheter

1989-02-06

1990-04-24

Rosenbaum, C. Fred

Surgery

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

Treating material introduced into or removed from body...

604 99, A61M 2900

Patent

active

049191217

ABSTRACT:
A hand-operated inflator device for inflating the expander on a balloon-type catheter. It comprises a molded plastic housing for retaining a syringe tube therein for containing an inflation fluid. The housing also includes an internally threaded surface. A syringe plunger having an internal longitudinal bore and a longitudinal slot formed through the wall thereof has a piston mounted on the distal end for insertion into the syringe body. Fitted into the longitudinal slot is an externally threaded member which can be raised and lowered in a radial direction by manipulation of a manuable actuable means positioned in the longitudinal bore of the plunger. When the externally threaded member is raised, its teeth mesh with the teeth on the internally threaded annular surface of the housing, but when lowered, the threaded surfaces are disengaged. When the two are engaged, the piston is advanced in the syringe tube by rotating the plunger. When the two are disengaged, the plunger may be advanced by longitudinal force applied to the end of the plunger.

REFERENCES:
patent: 4370982 (1983-02-01), Reilly
patent: 4413989 (1983-11-01), Schjeldahl et al.
patent: 4439185 (1984-03-01), Lundquist
patent: 4583974 (1987-04-01), Kokernak
patent: 4655749 (1987-04-01), Fischione
patent: 4723938 (1989-02-01), Goodin et al.
patent: 4758223 (1988-07-01), Rydell
patent: 4832692 (1989-05-01), Box et al.

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