Acoustic sensor assembly
First Claim
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1. An acoustic sensor assembly comprising:
- a sensor sub-assembly comprising;
a frame,a sensing element comprising a piezoelectric material that is stretched in tension on the frame and configured to generate a signal responsive to acoustic vibrations, andan acoustic coupler supported by the frame and positioned to apply pressure to the sensing element; and
a patient attachment portion attached to at least a top portion of the sensor sub-assembly, the patient attachment portion comprising;
an elastic portion; and
an attachment layer comprising a first side including an adhesive surface and a second side opposite the first side, wherein;
the attachment layer extends between an inner periphery of the attachment layer proximate the sensor sub-assembly and an outer periphery of the attachment layer distal the sensor sub-assembly,the elastic portion attaches to the sensor sub-assembly and extends to the second side of the attachment layer,the elastic portion is attached to the attachment layer on the second side of the attachment layer and at a point between the inner periphery and the outer periphery of the attachment layer, andthe patient attachment portion is configured to enable attachment of the acoustic sensor assembly to a medical patient via attachment of the adhesive surface to a tissue site of the medical patient.
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Abstract
An acoustic sensor is configured to provide accurate and robust measurement of bodily sounds under a variety of conditions, such as in noisy environments or in situations in which stress, strain, or movement may be imparted onto a sensor with respect to a patient. Embodiments of the sensor provide a conformable electrical shielding, as well as improved acoustic and mechanical coupling between the sensor and the measurement site.
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Citations
16 Claims
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1. An acoustic sensor assembly comprising:
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a sensor sub-assembly comprising; a frame, a sensing element comprising a piezoelectric material that is stretched in tension on the frame and configured to generate a signal responsive to acoustic vibrations, and an acoustic coupler supported by the frame and positioned to apply pressure to the sensing element; and a patient attachment portion attached to at least a top portion of the sensor sub-assembly, the patient attachment portion comprising; an elastic portion; and an attachment layer comprising a first side including an adhesive surface and a second side opposite the first side, wherein; the attachment layer extends between an inner periphery of the attachment layer proximate the sensor sub-assembly and an outer periphery of the attachment layer distal the sensor sub-assembly, the elastic portion attaches to the sensor sub-assembly and extends to the second side of the attachment layer, the elastic portion is attached to the attachment layer on the second side of the attachment layer and at a point between the inner periphery and the outer periphery of the attachment layer, and the patient attachment portion is configured to enable attachment of the acoustic sensor assembly to a medical patient via attachment of the adhesive surface to a tissue site of the medical patient. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15, 16)
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Specification