Lawrence J Darnell

US Patent:

7160268, Jan 9, 2007

Filed:

Aug 5, 2002

Appl. No.:

10/212619

Inventors:

Lawrence W. Darnell - Cypress TX, US
Ramon C. Dimalanta - Rancho Santa Margarita CA, US
Sean C. Madden - Mission Viejo CA, US
Glenn R. Sussman - Laguna Niguel CA, US

Assignee:

Alcon, Inc. - Hunenberg

International Classification:

A61M 37/00
A61M 1/00
A61B 17/20

US Classification:

604141, 604 22, 604 27

Abstract:

A container for delivery of a surgical fluid to a surgical handpiece is disclosed. The container includes a volume for receiving the surgical fluid to be delivered to the handpiece and an end for removably engaging a receptacle in a surgical console and for fluidly coupling with a source of pressurized fluid in a surgical console.

US Patent:

7226435, Jun 5, 2007

Filed:

Aug 1, 2005

Appl. No.:

11/194723

Inventors:

Lawrence W. Darnell - Cypress TX, US

Assignee:

Alcon, Inc. - Hunenberg

International Classification:

A61M 5/00

US Classification:

604207

Abstract:

A syringe-like device having a chamber in which a pressurizing piston reciprocates. The chamber is connected on one end to a vial containing a drug to be delivered to an eye and on the other end to a needle or cannula for administering the drug to an eye. Pulling proximally backwards on the piston creates a vacuum in the chamber and draws the drug out of the vial. Upon release of the piston, a spring pushes the piston forward, pressurizing the chamber. Delivery of the drug is controlled by a roller pinching off a section of compliant tubing between the chamber and the cannula, with a design similar to a peristaltic pump. A one-way valve prevents the drug from being expelled back into the vial. The flow rate of the drug out of the cannula can be controlled by rotation of the roller.

US Patent:

20090040181, Feb 12, 2009

Filed:

Aug 9, 2007

Appl. No.:

11/836426

Inventors:

Lawrence Darnell - Cypress TX, US
Christopher Horvath - Irvine CA, US
Bruno Lassalas - Irvine CA, US

International Classification:

G06F 3/033

US Classification:

345161

Abstract:

Embodiments provide a system and method for magnetic hand controllers. An embodiment of a magnetic hand controller can include a base portion comprising a base magnet, a hand control portion spaced from and movable relative to the base portion, the hand control portion comprising a hand control and a hand control magnet coupled to the hand control and oriented so that the hand control magnet is attracted to the base magnet. The hand control portion may be coupled to a device such that a user may control the device by moving the hand control.

US Patent:

47188880, Jan 12, 1988

Filed:

Mar 10, 1986

Appl. No.:

6/838660

Inventors:

Lawrence W. Darnell - Cypress TX

Assignee:

Cardiovascular Systems, Inc. - The Woodlands TX

International Classification:

B04B 900

US Classification:

494 85

Abstract:

A centrifuge bowl mount with a base and having one or more toggle members disposed thereon which are movable from a non-contact or non-engaging first positon to a contact or engaging second position in which they either (a) contact or engage the bowl or (b) move other members such as seal members disposed on the base or move push membes which in turn move the seal members to contact or engage the bowl.

US Patent:

55911137, Jan 7, 1997

Filed:

Oct 31, 1994

Appl. No.:

8/332820

Inventors:

Lawrence Darnell - Cypress TX
James Salter - Morietta GA

Assignee:

COBE Laboratories, Inc. - CO

International Classification:

B04B 1500

US Classification:

494 12

Abstract:

A centrifuge is provided with a mounting arrangement that secures a centrifuge bowl to a turntable in response to centrifugal force generated when the turntable is rotated. The centrifuge includes first and second retainers, one of which is connected to the turntable, while the other is connected to the centrifuge bowl. The second retainer engages the first retainer when the first and second retainers are in an interlocking position to secure the centrifuge bowl to the turntable. A movable arm is provided on the turntable and coupled to the second retainer, the movable arm has a ballast that forces the movable arm and second retainer in a first direction in response to centrifugal force generated by rotating the turntable so that the second retainer is forced into the interlocking position with the first retainer. In one embodiment, a vacuum applied to an opening in the turntable assists in mounting a centrifuge bowl to the turntable.