I-flow Corporation Inc.

Staar Surgical Company, Inc.

Minnesota Mining and Manufacturing Company

American Hospital Supply Corporation

Charles M Kienholz

Eric W Brown

Willis J Bruns

Thomas G Hacker

Thomas P Maxwell

Rex O Bare

Earl F Robinson

Steven J Busak

Ferrell D Papic

Mortaza Khanessari

Keith W Richey

Steve Busak

Wayne Hayob

A cartridge fed infusion pump containing a plurality of linear peristaltic pumps. Each pump is powered by a direct current motor. The motor has a shaft which rotates to perform a pump cycle. A position encoder mounted on the shaft is used to determine when the shaft has reached the stop position in the pump cycle. A reverse pulse is used to quickly stop the motor shaft.

Cartridge fed programmable ambulatory infusion pumps powered by DC

Blood sensor cassette

Infusion pump cartridge

Pump tube mount

An infustion pump fluid source cartridge having a pump interface portion and a fluid source portion. The top edge of the cartridge is bevelled in the fluid source portion to permit bending of the fluid source portion to securely position the pump interface portion against the pump without distorting the pump interface portion. A pump tube mount is provided for insertion into such cartridge. The pump tube mount includes a uniquely shaped front wall and a rear wall which extends downward in order to butt up against a ledge. Tabs extend from the rear wall in order to snap into an opening beneath the ledge. A compressible tube is mounted in the tube mount by providing a cylindrical fitting having an indentation. The tube may be held in the indentation by a collar surrounding the tube in alignment with the indentation.

Pump tube mount and cartridge for infusion pump

A combination catheter connector and clamp provided with an interlocking hook and post for locking two connector parts together. A manifold separates the lumens of a multilumen catheter into separate arms which can be closed or opened by a pushbutton clamp. A silicone block is used between the engagement portions of the connector parts.

Catheter connector and clamp

A pump housing which contains a plurality of linear peristaltic pumps and receives a fluid source cartridge. The cartridge is provided with retaining knobs for engaging retaining holes in the front end of the pump housing. A cartridge further contains a tab at its rear end for engaging a locking mechanism in the pump housing. The cartridge contains linear fluid conduits which align with the linear peristaltic pumps for pumping fluid from the fluid source pouches within the cartridge. Each pump is individually controlled by a programmable controller within the pump.

Multiple fluid cartridge and pump

The invention provides improved intraocular lens structures for surgical placement in the eye, the unique structures comprise an optical zone portion substantially centrally disposed with an integral outer haptic portion. In one embodied form, the haptic portion is composed of materials having relatively high temperature resistance such as polyimide material, and can be fabricated in a wide variety of engineered configurations. In a presently preferred embodiment, the haptic portion includes an anchoring strut in an arcuate configuration having an oblique face directed to the center of the optical zone portion. The invention further provides methods for insert molding of haptic portions to optical zone portions of the lens structures without conventional secondary operations such as drilling sites in the optic for insertion and welding of haptics. Accordingly, the unique structures and methods provide haptic portions of an infinite variety of engineered shapes which, together with the optical zone portion, are autoclavable and provide a comfortable fit for the eye. The novel lens structure combination permits a wide variety of haptic portions and optical zone portions to be conveniently assembled, thereby providing a lens structure combination which possesses appropriate haptic configuration and optical characteristics custom-fitted to a patient's individual requirements.

Intraocular lens structure with polyimide haptic portion and methods for

A spring-loaded latching mechanism for a peristaltic pump that automatically sets and maintains a desired roller head tension. The spring-loaded latching mechanism includes a pair of counter-rotating latching cams positioned on opposite sides of a pump housing. Each latching cam has an indented or slotted portion for engaging a disposable tubing cassette. The disposable tubing cassette includes a length of flexible tubing supported by a circular race or channel. The latching cams are spring-loaded and, when the disposable tubing cassette is inserted into the pump housing, the latching cams urge the disposable cassette with its length of flexible tubing and circular race against a pump roller head to provide the desired roller head tension.

Peristaltic pump latching mechanism

A humidifier for humidifying gas with a liquid has a cavity defined by top, bottom, and side walls. An interior wall is attached to the side wall and defines a first and second cavity within the enclosed cavity. At least a first opening adjacent the bottom wall and at least a second opening adjacent the top wall extend through the interior wall to provide fluid flow communication between the first and second cavities. An enclosed conduit for the introduction of a gas to be humidified is secured to the side wall. The enclosed conduit has a closed end and an opening adjacent the closed end, which opening extends through the side wall of the humidifier adjacent the bottom wall and opens into the first cavity. The opening through the side wall provides for the formation of bubbles of a gas which are introduced into the humidifier through the enclosed conduit. An opening is provided through the top wall of the humidifier for exhausting the humidified gas from the humidifier. A tubular projection extends from the top wall and is in communication with the opening therethrough to provide for exhausting of the humidified gas.

Growing community of inventors

San Dimas, CA, United States of America

Charles M Kienholz