1
Bruce A Amrine: Venous return catheter and a method of using the same. Sarns, Barnes Kisselle Raisch & Choate, December 12, 1978: US04129129 (210 worldwide citation)

A method and device for connecting a life support machine to the heart of a patient during open heart surgery which includes a two-stage venous return catheter having spaced inlet openings in the tip end and spaced from the tip end to insure proper connection to the various cavities of the heart and ...


2
DeVries James H: Method and apparatus for automatic peritoneal dialysis. Sarns, January 9, 1973: US3709222 (146 worldwide citation)

A method and apparatus for automatic peritoneal dialysis which includes a series of steps for the exchange of dialysate which proportions the in-flow to the out-flow and provides for the elimination of any distressing in-flow or out-flow pressures on the patient and any abnormal build-up of fluid qu ...


3
Seymour R Lampert: Air emboli detection. Sarns, Barnes Kisselle Raisch & Choat, July 28, 1981: US04280495 (34 worldwide citation)

Air emboli detection method and apparatus for use in cardiopulmonary bypass surgery or the like comprising modular sensor, control and power units. The sensor unit is adapted to releasably clamp a blood flow tubing or conduit in a vertical orientation below a blood deaerator, and includes an LED inf ...


4
Sarns Richard N: Connector for open heart surgery. Sarns, Barnes Kisselle Raisch & Choate, December 3, 1974: US3851646 (31 worldwide citation)

A connector for open heart surgery to allow blood from the superior vena cava and the inferior vena cava to pass to the pump oxygenator in a smooth and coordinated flow including a plastic connector body having a straight flow passage and parallel branch passages entering the body and joining the fl ...


5
Sarns Richard Norman: Tube coupling for medical appliances. Sarns, June 3, 1970: GB1193759-A (23 worldwide citation)

1,193,759. Tube joints. SARNS Inc. 18 June, 1968, No. 28850/68. Heading F2G. A tube coupling for readily connecting and disconnecting plastics or rubber tubes 10 and 12 of medical appliances comprises a first moulded plastics tubular connector 18, a second moulded plastics tubular connector 20 adapt ...


6
Teders Phillip J: Motor speed control circuit with unijunction transistor line voltage compensation. Sarns, June 5, 1973: US3737748 (19 worldwide citation)

An adjustable speed control circuit for a DC motor which automatically compensates for variations in both motor load and the voltage level of an AC source which supplies power for driving the motor. A command signal circuit and a reference signal circuit develop command and reference signals respect ...


7
De Vries James H: Peristaltic pump construction. Sarns, October 24, 1972: US3700361 (13 worldwide citation)

A rotor for a peristaltic pump assembly which is formed of a unitary element having radial arms recessed at the distal ends to receive pressure rollers for the pump and wing formations at the distal ends for carrying guide rollers extending radially of the axis of the rotor and spaced axially on eit ...


8
Bruce A Amrine, Philip J Teders: Temperature probe and connector. Sarns, Barnes Kisselle Raisch & Choate, May 30, 1978: US04091672 (10 worldwide citation)

A temperature probe and connector for extracorporeal monitoring of blood by-passed from a patient undergoing open heart surgery which includes a conductive connector unit interposed in the by-passed blood tube and a probe removably mountable on said connector unit having a sensing element for a tele ...


9
DeVries James H: Roller control for a peristaltic pump construction. Sarns, June 5, 1973: US3737257 (8 worldwide citation)

A peristaltic pump assembly utilizing a housing with a circular inner wall and a rotor having outer rollers for progressively squeezing a tube lying against the wall with a provision for radial adjustment of the rollers including an eccentrically mounted bearing shaft and a two-part lock cap on the ...


10
De Vries James H: Peristaltic pump construction. Sarns, June 5, 1973: US3737256 (7 worldwide citation)

A peristaltic pump assembly which utilizes a housing with a circular inner wall to back up a peristaltic tube, and a rotor for progressively squeezing a tube right against that wall. A unique pressure device is utilized on eccentrically mounted pressure rollers in the form of a spring which biases t ...