BODY NOISE DETECTOR

• US 3,858,575 A
• Filed: 05/24/1973
• Issued: 01/07/1975
• Est. Priority Date: 03/05/1973
• Status: Expired due to Term

• Current Assignee: Ewald Rose
• Original Assignee: Ewald Rose
• Inventors: Rose, Ewald
• Primary Examiner(s): Gaudet, Richard A.
• Assistant Examiner(s): Cohen, Lee S.
• Application Number:
  US05/363,582
• Time in Patent Office: 593 Days
• Field of Search: 128/2.5S,2K,418,2.5P,2.6E,2.1E,DIG.4,404-405,410-411,416-417,278,300
• US Class Current: 600/528
• CPC Class Codes: A61B 5/252 by suction
• CPC Class Codes: A61B 7/04 Electric stethoscopes microphones, acoustic transducers therefor H04R

Abstract

A body noise detector, includes a housing having a first chamber therein containing a microphone capsule and a second reducedpressure chamber therein closed on one side by a resilient deformable wall, and connected to an annular groove surrounding a pad attached to the microphone capsule. The deformable wall is loaded by a spring against pressing into the reduced-pressure chamber. In one embodiment a lever carrying a pressure roller is pivoted on the housing so that the pressure roller can press upon the deformable wall.

Claims

1. A body noise detector comprising a housing enclosing an underpressure chamber, said housing including a rigid wall portion and a deformable wall portion, an annular ring projecting from the housing and forming a contact surface engageable with a patient'"'"''"'"'s body, said annular ring having a passage therethrough communicating between the contact surface and the underpressure chamber, said annular ring defining a cavity, microphone means carried by said housing and disposed in said cavity for engagement with a patient'"'"''"'"'s body, means for transmitting the noise detected by the microphone means, a pressure plate within said underpressure chamber and engageable with said deformable wall and spring means connected between said rigid housing wall and said pressure plate for urging said deformable wall into substantially undeformed condition by said pressure plate.

2. The detector defined in claim 1, and stop means interposed between the deformable wall and the pressure plate for limiting movement of the pressure plate.

3. The detector defined in claim 2, in which the pressure plate includes a stepped rim engageable with the stop means.

4. The detector defined in claim 1, lever means pivotally connected to the housing and having a free end spaced from its pivotal connection, said lever means overlying said deformable wall portion, and a pressure roller carried by said lever and engageable with the central portion of the deformable wall by movement of said lever means free end toward the housing.