The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Jun. 16, 1987
Filed:
Jun. 10, 1986
Mark W Kroll, Rogers, MN (US);
Cherne Industries, Inc., Minneapolis, MN (US);
Abstract
A heart sound sensing device for placement on the body of a patient and for the detection of low frequency sound waves. The device is for use with medical diagnostic devices, and comprises a cylindrical housing structure for retaining the remaining elements of the device, a strap for holding the device to the body of the patient, a fluid ingress/egress aperture, an open end for receiving sound waves, and a hydrophone assembly centrally fixed within the housing structure for producing electrical signals in response to transmitted heart sound waves. The device of this invention is further provided with a flexible diaphragm which is vibratingly sensitive to sound waves generated by the patient's heart and being for placement in direct contact with the patient body surface to conform to the body contours. A bubble free fluid medium is provided to fill the remaining interior volume of the housing structure to transmit sound waves from the diaphragm to the hydrophone assembly. The device further includes a cable means communicatively connected to the hydrophone assembly for transmitting electrical output signals to medical diagnostic devices. The sound sensing device is further used in a method for sensing heart sound waves.