Brent C Allen

US Patent:

D556902, Dec 4, 2007

Filed:

Nov 7, 2006

Appl. No.:

29/250245

Inventors:

Brent William Allen - Rancho Santa Margarita CA, US

Assignee:

Terumo Cardiovascular Systems - Ann Arbor MI

International Classification:

2902

US Classification:

D241105

US Patent:

D582044, Dec 2, 2008

Filed:

Nov 13, 2006

Appl. No.:

29/250390

Inventors:

Thomas G. Hacker - Anaheim CA, US
Brent William Allen - Rancho Santa Margarita CA, US

International Classification:

2401

US Classification:

D24170

US Patent:

7628756, Dec 8, 2009

Filed:

Mar 4, 2006

Appl. No.:

11/367880

Inventors:

Thomas G. Hacker - Anaheim CA, US
Brent William Allen - Rancho Santa Margarita CA, US

Assignee:

Terumo Cardiovascular Systems Corporation - Ann Arbor MI

International Classification:

A61B 8/14

US Classification:

600467, 600459

Abstract:

An emboli detector device receives a blood flow in a perfusion circuit. The connector-like device has a rigid plastic smooth body hermetically sealed from the blood. There is a calculated thin, but rigid window formed as part of the flow-through tubing wall to allow ultrasonic waves to interrogate the flowing blood. A dampening material is included in the ultrasound path to adjust the acoustic levels to an applicable range to monitor emboli. The device incorporates a mechanism to securely hold the transducer during operation and a sensing system for automatically informing a control system of which one of several standard perfusion circuit tubing diameters is being used. The ultrasound echoes detected by the transducer are provided to a controller which detects the emboli and provides a detection signal to warn the surgeon or other operating room personnel of the embolic event.

US Patent:

7706853, Apr 27, 2010

Filed:

Feb 7, 2006

Appl. No.:

11/349477

Inventors:

Thomas G. Hacker - Anaheim CA, US
Brent William Allen - Rancho Santa Margarita CA, US

Assignee:

Terumo Cardiovascular Systems Corporation - Ann Arbor MI

International Classification:

A61B 5/1455

US Classification:

600344, 600323

Abstract:

A NIRS sensor device for brain monitoring is small in size, provides reliable attachment to a patient, blocks ambient light, is easy to use, is hygienic, and supports data integration with surgical and monitoring systems. The sensor device is coupled to a remote near infrared light source via a hybrid cable. Since the light source is remotely located, a source adapted for providing high energy, short pulses can easily be used so that there is less chance of interference by superficial non-brain tissues and less interference from ambient light. In addition, the remote location avoids changes in output of local light sources experienced in the prior art during hypothermia procedures (e. g. , bandwidth shifts in LEDs as a result of lowered temperature). The higher energy may be achieved by the use of laser diodes as opposed to locally-mounted LEDs typically used in the prior art. The sensor device is a two-piece design comprising a reusable portion containing the photodetector(s) and a disposable portion that receives the light from the reusable portion and bends it to direct the light into the brain.