Syringe for balloon catheterization

Details Syringe for balloon catheterization Syringe for balloon catheterization

1993-03-12

1994-06-07

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

053185340

ABSTRACT:
A unique syringe useful in the inflation and rapid deflation of a balloon used in balloon catheterization (transluminal angioplasty) procedures is disclosed. The syringe has a uniquely actuated thread engaging block which is engaged and disengaged by a rotary cam member interacting with the thread-engaging block. The thread engaging block engages a threaded piston rod which is attached to the piston within the barrel of a balloon catheter syringe. A rotary cam member engages the block so as to exert a positive force on the block, either moving the block into a thread engaging position or moving into a thread disengaging position. The unique syringe may also contain a piston face which is segmented so that a portion of the piston face is separately actuatable in order to introduce a minor increase in pressure while the main piston member remains in a stationary position.

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