US 5,195,960 AGranted

Disposable vacuum/peristaltic pump cassette system

AssigneeSite Microsurgical Systems, Inc.

InventorsK. Mosaddeq Hossain, Jude V. Paganelli, Bernd R. Fischer, Deborah A. DeMeo, Robert M. Bross, Kenneth P. Cook

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Abstract

A microsurgical irrigation/aspiration system is provided, including a controller having a pump roller head, actuators for occluding fluid lines, a suction sensor, and means for mounting a pump cassette. The system cassette is suitable for mounting on the controller and has an opening with a pump segment passing along an arcuate wall of the opening. When the cassette is mounted on the console, the roller head is engaged in the cassette opening and compresses the pump segment against the arcuate wall. An infusion line passes through the cassette and is occludable by one of the actuators, and a vent line connected to the pump segment is occludable by a second actuator. A suction sensing port on the cassette couples with the suction sensor in the controller. In an alternate embodiment, a cassette is disclosed within which both vacuum and peristaltic pumping is possible. Latching may be accomplished by a plunger attached to the sensory port of the cassette.

Claims6

Dependent claims

A microsurgical irrigation/aspiration system, comprising:

a control system including:
(i) means for mounting a disposable cassette;
(ii) means for selectably occluding an infusion line;
and
(iii) means for pumping a fluid, wherein said pumping means is chosen from the group consisting of peristaltic pumping mean and vacuum pumping means;
and
a disposable cassette, adpated for mounting on said control system so as to engage said pumping means and said selectably occluding means, and including;
(i) a selectably occludable infusion line, operable in conjunction with said selectably occluding means;
(ii) means for connecting said infusion line to a solution source;
(iii) a pumping segment suitable for engagement with and capable of operation by said pumping means such that said pumping means, when engaged with said pumping segment is capable of the performance of either peristalic pumping or vacuum pumping through said pumping segment;
and
(iv) means for connecting said pumping segment to a solution container;
wherein when said pumping means performs vacuum pumping, said vacuum pumping is accomplished outside said cassette.

10 more elements

Dependencies are inferred from the claim text.

Facts

Application: 07/686,901Filed 17 Apr 1991 · continuation
Priority: 27 Apr 1987
Granted: 23 Mar 1993
Term ends: Not estimatedThe source records don’t support an estimate.

Classification15 codes

F04B 43/1253
Having peristaltic action: by using two or more rollers as squeezing elements, the rollers moving on an arc of a circle during squeezing
A61M 1/72
Suction drainage systems: cassettes forming partially or totally the fluid circuit
A61M 1/77
Suction drainage systems: suction-irrigation systems
A61M 1/82
Suction pumps: membrane pumps, e.g. bulbs

Family

Serial43,120Parent of this continuation-in-part · filed 27 Apr 1987
Serial253,801Parent of this continuation · filed 5 Oct 1988
US 5,125,891 AParent of this continuation
US 4,798,580 AParent of this continuation-in-part
US 5,195,960 AThis patent

From the US filing history. Foreign family members aren’t listed.