Ventilatory assistance using an external effort sensor

(54) VENTILATORY ASSISTANCE USING AN EXTERNAL EFFORT SENSOR

(75) Inventors: Michael Berthon-Jones, Leonay (AU);

Gordon Joseph Malouf, Coogee (AU)

(73) Assignee: ResMed Limited, North Ryde (AU)

( * ) Notice: Subject to any disclaimer, the term ol this patent is extended or adjusted under 35 U.S.C. 154(b) by 0 days.

This patent is subject to a terminal disclaimer.

(21) Appl. No.: 09/396,031

(22) Filed: Sep. 15, 1999

(51) Int. CI.7 A61M 16/00; A62B 7/00;

F16K 31/02

(52) U.S. CI 128/204.23; 128/204.18;

128/204.21; 600/407; 600/473; 600/534

(58) Field of Search 128/204.18, 204.21,

128/204.23; 600/407, 473, 534

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FOREIGN PATENT DOCUMENTS

EP 0 078 677 5/1983

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OTHER PUBLICATIONS

Tobin et al., Principles & Practice ol Mechanical Ventilation, p. 42, Fig 2-A, 1994.*

* cited by examiner

Primary Examiner—Henry Bennett

Assistant Examiner—-Joseph F. Weiss, Jr.

(74) Attorney, Agent, or Firm—Gottlieb, Rackman &

Reisman, PC.

(57) ABSTRACT

An optical sensor mountable on a patient and targets the supranasternal notch for detecting skin movement by dint ol reflected light indicating respiratory effort. The sensor is used in conjunction with a ventilator to provide artificial ventilation support.

27 Claims, 6 Drawing Sheets