Timothy R Nelson

US Patent:

6468264, Oct 22, 2002

Filed:

Oct 12, 1999

Appl. No.:

09/416588

Inventors:

Edward M. Gillis - Cupertino CA
Timothy Scott Nelson - Los Gatos CA

Assignee:

Durect Corporation - Cupertino CA

International Classification:

A61K 922

US Classification:

6048911, 604513, 604 59

Abstract:

The invention provides a means of closed exchange of implanted medical device components. An exchanger is brought into contact with the implanted medical device in situ. The component is withdrawn from the implanted device and brought into a closed chamber of the exchanger. Without breaking the contact between implanted device and exchanger, the replacement component is then moved from its position in the exchanger, and inserted into the correct position in the implanted device. The surfaces of the implanted device are not brought into contact with the outside environment, thereby minimizing the possibility of introducing contaminants into the body during the exchange process. The invention is particularly useful for devices that are difficult to position and re-position, thus making it advantageous to exchange only an expended component, rather than the entire device.

US Patent:

6726920, Apr 27, 2004

Filed:

Sep 22, 2000

Appl. No.:

09/668684

Inventors:

Felix Theeuwes - Los Altos Hills CA
Timothy S. Nelson - Los Gatos CA

Assignee:

Durect Corporation - Cupertino CA

International Classification:

A61F 202

US Classification:

424423, 424422, 424424, 424425, 424426, 424447, 424448, 424449, 604 19

Abstract:

The present invention features devices and methods for delivery of drug to an internal organ surface by delivery of drug directly to the surface of the organ such that the drug traverses the organ surface and enters the organ tissue. The device is in the form of an implantable drug delivery patch comprising a first layer, which is generally substantially drug-impermeable. When the first layer is placed on an outer surface of an organ, a drug reservoir is defined by the first layer and the organ surface.

US Patent:

20020193751, Dec 19, 2002

Filed:

Apr 2, 2002

Appl. No.:

10/116713

Inventors:

Felix Theeuwes - Los Altos Hills CA, US
James Brown - Los Gatos CA, US
Timothy Nelson - Los Gatos CA, US

International Classification:

A61M005/00

US Classification:

604/248000, 604/284000, 604/500000

Abstract:

The present invention features methods and devices for modulating the rate of delivery of a drug formulation from a drug delivery device by diverting drug away from a drug delivery pathway. In one embodiment, a flow regulator is positioned relative to a drug delivery pathway of a drug delivery system so that adjustment of the flow regulator can provide for diversion of drug away from the drug delivery pathway. Diverted drug can be either delivered into the systemic circulation of the subject, or can be captured in a waste reservoir.

US Patent:

20220318963, Oct 6, 2022

Filed:

Nov 3, 2021

Appl. No.:

17/517872

Inventors:

- CAMARILLO CA, US
John Lee Ponti - Camarillo CA, US
Savanna Liah Steinmetz - South St. Paul MN, US
Timothy Allen Nelson - St. Louis Park MN, US

International Classification:

G06T 5/00
G06T 7/38
G06T 7/593
G06K 9/00
G06T 5/50
H04N 13/239

Abstract:

A system includes a sensor including a set of cameras configured to capture a set of images of an enclosed space. The system further includes a processor and a non-transitory computer-readable medium containing instructions which, when executed on the processor, cause the processor to perform operations including: (a) receiving the set of images captured by the set of cameras; (b) pre-processing the set of images to increase quality and reduce effect of ambient lighting; (c) building a disparity map for the set of images based at least in part on a relationship between the set of cameras; and (d) determining an occupancy of the enclosed space based at least in part on the disparity map. The system can be used to determine occupancy in a trailer with irregularly shaped cargo using low cost sensors.