Positive displacement piston driven blood pump

Details Positive displacement piston driven blood pump Positive displacement piston driven blood pump

1989-05-04

1991-11-19

Rosenbaum, C. Fred

Surgery

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

Treating material introduced into or removed from body...

604153, 604247, 128DIG12, A61M 100

Patent

active

050662821

ABSTRACT:
The invention is a disposable, positive-displacement piston pump, having a polycarbonate body, a piston, an inlet valve, and an outlet valve. The outlet valve is connected to an exit chamber, which is separated from the exit valve by an elastomeric membrane. The elastomeric membrane encloses an accumulation chamber which is filled with a fluid such as air under atmospheric pressure. Pulsations in outlet pressure caused by stroking of the piston are dampened by the flexing action of the elastomeric membrane, compressing the fluid within the accumulator chamber. The throw out of the pump is pressure-dampened and is of sufficient pressure to flow through very low-profile angioplasty catheters having perfusion lumens extending therethrough. The combination of the pump with a very low-profile balloon angioplasty catheter allows access of the catheter to a constricted passage with the ability to pump a sufficient volume of blood through such a low-profile catheter during balloon inflations.

REFERENCES:
patent: 3298320 (1967-01-01), Latham
patent: 3447479 (1969-06-01), Rosenberg
patent: 4634430 (1987-01-01), Polaschegg
patent: 4857054 (1989-08-01), Helfer
"Myocardial Salvage Prior to Emergency Coronary Bypass Surgery for PTCA-Induced Coronary Occlusion", Ulrich W. Busch, M.D., Ulrich Pfeiffer, M.D., Richard Bauer, M.D., Ph.D., Ulrich Renner, M.D., Rudolf Babic, M.D., Gunther Flumel, M.D., and Hans Blomer, M.D. from The Texas Heart Institute Journal, pp. 113-122, vol. 13, No. 1, Mar. 1986.

Affiliated with

Also associated with

Rating

Positive displacement piston driven blood pump does not yet have a rating. At this time, there are no reviews or comments for this patent.

If you have personal experience with Positive displacement piston driven blood pump, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Positive displacement piston driven blood pump will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFUS-PAI-O-1367516