An apparatus and method
AssigneeIP2Ipo Innovations Limited
InventorsMohammad Reza Bahmanyar, Christopher Neil McLeod
Life of this patent
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Abstract
An implantable cardiovascular pressure sensor comprising a rigid enclosure sealed by a flexible membrane; and an elongate compliant member comprising a piezoelectric material, the member having a width and a length greater than the width, and two ends separated by the length and two sides separated by the width; wherein the flexible membrane is coupled to the elongate compliant member to transfer external fluid pressure load to the elongate compliant member to cause deflection of the elongate compliant member in response to changes in the external fluid pressure; the pressure sensor further comprising a first acoustic wave device provided by the piezoelectric material of the elongate compliant member for sensing said deflection.
Claims30
An implantable cardiovascular pressure sensor comprising:
- a rigid enclosure sealed by a flexible membrane;
- and
- an elongate compliant member comprising a piezoelectric material, the member having a width and a length greater than the width, and two ends separated by the length and two sides separated by the width;
- wherein the flexible membrane is coupled to the elongate compliant member to transfer external fluid pressure load to the elongate compliant member to cause deflection of the elongate compliant member in response to changes in the external fluid pressure;
- the pressure sensor further comprising:
- a first acoustic wave device provided by the piezoelectric material of the elongate compliant member for sensing said deflection.
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9-18. (canceled)
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An implantable cardiovascular pressure sensor comprising:
- an enclosure, having a wall comprising a compliant region, integral with the wall, and arranged to be displaced into or outward from the enclosure in response to changes in a pressure difference across the wall;
- and
- a deflectable piezoelectric member coupled to the compliant region to be deflected in response to displacement of the compliant region, and an acoustic wave transducer, wherein the deflectable piezoelectric member provides the substrate of the acoustic wave transducer.
26-28. (canceled)
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33-34. (canceled)
38-40. (canceled)
A method of forming an implantable cardiovascular pressure sensor, the method comprising:
- depositing a layer of material onto a mandrel comprising a forming feature arranged so that the layer provides a wall comprising a compliant region integral with the wall;
- detaching the wall from tile mandrel to form an enclosure comprising said wall;
- coupling a deflection sensor to the compliant region, inside said enclosure, to sense deflection of Um compliant region;
- and
- sealing said enclosure so that the compliant region can be displaced into or outward from the enclosure in response to changes in a pressure difference across the wall.
44-46. (canceled)
Dependencies are inferred from the claim text.