Digital display for an inflation system for a balloon catheter

Details Digital display for an inflation system for a balloon catheter Digital display for an inflation system for a balloon catheter

1992-05-22

1994-01-18

Rosenbaum, C. Fred

Surgery

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

Treating material introduced into or removed from body...

604219, A61M 2900

Patent

active

052795632

ABSTRACT:
An inflation system for pressurization and depressurization of a balloon catheter. The inflation system includes a syringe, including a syringe barrel, a plunger with expandable thread, a handle with cam, a syringe end cap, and a digital pressure gauge. The syringe is structured such that part of the syringe barrel has an internal thread which engages the expandable threads of the plunger. In the disengaged mode, the plunger slides freely within the syringe barrel allowing for rapid motion to purge, pressurize, or depressurize the inflation system. Once pressure reaches a predetermined level in the system, the cam on the handle causes the threads to automatically lock against the syringe barrel, and continued pressurization or depressurization is accomplished by the rotation of the plunger handle with respect to the syringe barrel. One advantage of the inflation system is that only one step is necessary for locking the syringe for controlled pressurization and depressurization. A digital display engages to a pressure port to indicate the pressure and displays absolute pressure and elapsed time at absolute pressure. In addition, the digital display provides for a communication interface to a data acquisition system such as a personal computer to record date, time and pressure over finite term periods.

REFERENCES:
patent: 938544 (1909-11-01), Ball
patent: 4500310 (1985-02-01), Christinger
patent: 4723938 (1988-02-01), Goodin et al.
patent: 4743230 (1988-05-01), Nordquist
patent: 4872483 (1989-10-01), Shah
patent: 5019041 (1991-05-01), Robinson et al.
patent: 5021046 (1991-06-01), Wallau
patent: 5047015 (1991-09-01), Foote et al.

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