Alexander S Borsanyi

48985830, Feb 6, 1990

May 18, 1988

7/195770

Alexander S. Borsanyi - Newport Beach CA
Russell J. Redmond - Goleta CA

Baxter Healthcare Corporation - Deerfield IL

A61N 100

604153

An implantable fluid delivery device having a deformable casing containing a fluid reservoir, a compressible pump housing, and inlet and outlet valves for controlling the flow of metered amounts of fluid from the reservoir to a catheter when a target zone of the casing's top wall is depressed. The construction and operation of the outlet valve result in the generation of a tactile feedback signal transmitted through the target zone to inform a user that a measured amount of fluid has been discharged from the device.

48677442, Sep 19, 1989

May 21, 1987

7/052600

Alexander S. Borsanyi - Newport Beach CA

Baxter International Inc. - Deerfield IL

A61M 500

604153

A peristaltic pump equipped with a series of rollers eccentrically mounted upon a drive shaft, the pump also includes an elastomeric fluid delivery tube supported to extend in a direction parallel with the axis of the drive shaft. Each roller has a generally cylindrical outer surface equipped with a concentric annular rim that projects radially outwardly beyond the cylindrical surface and is rounded and smoothly tapered when viewed in longitudinal section. The rims of successive rollers are equally spaced and the rim diameter of each eccentric roller is sufficiently large to occlude a section of the tube when that roller is at its perigee with respect to the tube, at which time the adjacent cylindrical surface of the same roller also engages the tube but causes only limited non-occlusive deformation of that tube. The apparatus is particularly useful as a blood pump.

43877346, Jun 14, 1983

Jul 16, 1981

6/283984

Alexander S. Borsanyi - Corona del Mar CA

American Hospital Supply Corporation - Evanston IL

A61M 514

137206

An apparatus and method are described for converting a continuous fluid stream into a succession of discrete fluid segments or boluses traveling independently of each other in a capillary passage, the menisci of the boluses so generated providing a clear basis for observing, accurately measuring, and controlling fluid flow. The meniscus generator is surrounded by a second fluid immiscible with the first fluid, and the wall of the capillary passage is provided with a longitudinal slit for reducing the effect of surface tension, for the spontaneous formation of boluses of the first fluid, for eliminating the effect of differential pressure on the boluses, and for maintaining separation of the boluses.

48548367, Aug 8, 1989

Feb 18, 1986

6/830693

Alexander S. Borsanyi - Newport Beach CA

Baxter International Inc. - Deerfield IL

F04B 4314
F04B 4312

417474

A tubular conduit formed of resilient, flexible, thermoplastic material having an intermediate portion with at least one enlarged section that has a flow passage of substantially greater cross-sectional area, and a wall portion of lesser thickness and lower resistance to deformation, than found in the remainder of the conduit. The method of making the collapsible conduit, involving the steps of reshaping a preformed thermoplastic tube by molding it under heat and internal pressure, and the utilization of such a formed conduit in a linear peristaltic pump, are also disclosed.

48985856, Feb 6, 1990

May 18, 1988

7/195769

Alexander S. Borsanyi - Newport Beach CA
Michael L. Jones - Huntington Beach CA

Baxter Healthcare Corporation - Deerfield IL

A61M 100

604153

An implantable fluid delivery device for dispensing metered amounts of liquid medication when a pump assembly within its casing is operated by finger pressure applied to a central target zone of the casing's top wall. The top wall also includes an injection site spaced from the central target zone for use when a bolus of medicament is to be injected into the device and delivered directly to the patient without passing through the pump assembly. The flattened pear shape of the casing and the location of the sites for pump activation and refilling on one hand, and for bolus injection on the other, facilitate errorfree use and operation of the device. Although limited fluid backup may occur during bolus injection, a valve arrangement within the device prevents intermixing of the bolus medicament with the liquid medication in the reservoir. In a second embodiment, a supporting grid prevents possible injury to the backup-restraining valve during bolus injection.

53124162, May 17, 1994

Oct 18, 1991

7/779443

Edmund E. Spaeth - Orange CA
Alexander S. Borsanyi - Newport Beach CA
Thomas L. Hursman - Diamond Bar CA

Endomedix Corporation - Irvine CA

A61B 1700

606114

The present invention pertains to a device for deploying and retrieving a flexible tissue containment sac within a body cavity, through a minimal access incision. The device generally includes a tubular introducer having a flexible tissue containment sac disposable in a compressed configuration within the lumen of such tubular introducer. An elongate plunger shaft or pushing member is insertable or passable through at least a portion of the introducer lumen to push the containment sac out of the distal end of the lumen. Attached to the containment sac and extending through the lumen of the introducer is a tether. A portion of the tether may extend out of the proximal end of the introducer. The proximal end of the tether may be grasped and pulled in a proximal direction to pull the containment sac to a retrieved position on the end of an extractable shaft or, in embodiments absent such extractable shaft, to pull at least a portion of the containment sac into the introducer lumen.

44937067, Jan 15, 1985

Aug 12, 1982

6/407440

Alexander S. Borsanyi - Newport Beach CA
Donald E. Bobo - Fountain Valley CA

American Hospital Supply Corporation - Evanston IL

A61M 500

604153

A linear peristaltic pump, and a disposable casette therefor, particularly suitable for the infusion of parenteral fluids. The pump includes a housing having a power-driven shaft and a series of small bearing assemblies having their inner members eccentrically mounted upon that shaft. A thin elastomeric membrane extends along the series of bearing assemblies for engagement with the outer members thereof along a first band or linear zone of contact lying in the same plane as the axis of the shaft. The disposable casette is removably supported by the housing and takes the form of a rigid, planar, perimetric frame having an opening across which is stretched a section of elastomeric tubing. Locators provided by the housing and frame orient the casette with the axis of the tubing in the same plane as the first band of contact and the axis of the shaft, and a platen provided by the housing engages the section of elastomeric tubing that bridges the opening of the frame to urge that section into engagement with the opposite side of the membrane along a second band or linear zone of contact parallel with the first band of contact. The casette may include tubular extensions and connectors for connecting opposite ends of the section of elastomeric tubing to a source of fluid and to a patient.

44315392, Feb 14, 1984

Feb 5, 1979

6/009444

Alexander S. Borsanyi - Corona Del Mar CA

American Hospital Supply Corp. - Irvine CA

B01D 3100

210232

The present invention relates to mass transfer apparatus e. g. , artificial kidney in which a semipermeable membrane is folded or pleated between top and bottom rectangular plates. Support members are disposed within each pleat on one side only of the membrane. The top and bottom plates are held under a predetermined compressive load while a connecting means with ports is bonded to the opposite side edges of the top and bottom plates. The whole pleated membrane assembly is secured within a housing, with the ports protruding through the housing. The apparatus has reproducible performance characteristics from one device to another.