LEAD EMBEDDED PRESSURE SENSOR
First Claim
1. A pressure sensing module comprising:
- a pressure sensing capsule having;
a body with a distal end and a proximal end;
an electrical circuit integrated into the body;
a first cavity located between the distal end and the proximal end;
an isolation diaphragm coupled to the distal end of the body of the pressure sensing capsule;
a MEMS pressure sensor mounted within the first cavity of the body of the pressure sensing capsule; and
, a sealed cavity configured to transfer a pressure applied to the isolation diaphragm to the MEMS pressure sensor.
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Accused Products
Abstract
A pressure capsule embedded in a pacemaker lead to monitor intracardiac chamber pressure is described. This pressure monitor capsule provides highly accurate pressure readings while insuring a high integrity seal against bodily fluids and tissue growth. The capsule is intended to be embedded into a pacemaker cardiac lead or a catheter with the distal (Tip) isolation diaphragm sensing pressure, coupling the pressure through an air column to a protected sensing MEMS device and providing a secure fluid seal to the lead walls. The proximal (Back) end of the capsule provides the electrical interface through the lead to the pacemaker pulse generator.
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Citations
44 Claims
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1. A pressure sensing module comprising:
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a pressure sensing capsule having;
a body with a distal end and a proximal end;
an electrical circuit integrated into the body;
a first cavity located between the distal end and the proximal end;
an isolation diaphragm coupled to the distal end of the body of the pressure sensing capsule;
a MEMS pressure sensor mounted within the first cavity of the body of the pressure sensing capsule; and
,a sealed cavity configured to transfer a pressure applied to the isolation diaphragm to the MEMS pressure sensor. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15, 16, 17)
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18. A pressure sensing capsule comprising:
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a body with a distal end and a proximal end;
an electrical circuit embedded into the body;
a first cavity located between the distal end and the proximal end;
an isolation diaphragm coupled to the distal end of the body;
a MEMS pressure sensor mounted in the first cavity of the body of the pressure sensing capsule; and
,a pressure transfer cavity having a first opening operatively in communication with the isolation diaphragm and a second opening operatively in communication with the MEMS pressure sensor, the pressure transfer cavity transferring a pressure applied at the isolation diaphragm to the MEMS pressure sensor by transferring the pressure applied from the first opening to the second opening. - View Dependent Claims (19, 20, 21, 22, 23, 24, 25, 26, 27, 28, 29, 30, 31, 32, 33)
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34. A method for creating a pressure sensing capsule comprising:
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providing a body with a distal end and a proximal end, the body having a first cavity located between the distal end and the proximal end, an electrical circuit embedded into the body, and a pressure transfer cavity having a first opening operatively in communication with the isolation diaphragm and a second opening operatively in communication with the MEMS pressure sensor;
coupling an isolation diaphragm to the distal end of the body;
sealing the isolation diaphragm around the first opening; and
, sealing the MEMS pressure sensor to the second opening;
wherein the first opening is operatively in communication with the isolation diaphragm and the second opening is operatively in communication with the MEMS pressure sensor. - View Dependent Claims (35, 36, 37, 38, 39, 40, 41, 42, 43, 44)
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Specification