Monitoring and recording implantable silicon active pressure transducer
First Claim
1. An implantable active pressure transducer comprising:
- a pressure sensing element;
sensor circuitry for operating the pressure sensing element, the sensor circuitry electrically connected to the pressure sensing element;
an innermost packaging enclosing the pressure sensing element and the sensor circuitry;
the innermost packaging having an opening defined therein;
the pressure sensing element being bonded to the innermost packaging substantially aligned with the opening defined therein;
an outermost packaging made of a metal forming an interior cavity divided into first and second chambers;
the innermost packaging being disposed within the first chamber without being fixed to the outermost packaging;
the outermost packaging having an inlet and an outlet both in fluid communication with the first chamber for allowing a flow of a pressure transmitting fluid into the outermost packaging and through the opening defined in the innermost packaging so as to be in contact with the pressure sensing element;
communication circuitry disposed within the second chamber; and
a battery disposed within the second chamber and electrically connected to power the communication circuitry, the communication circuitry and battery being hermetically isolated from the pressure transmitting fluid in the first chamber.
11 Assignments
0 Petitions
Accused Products
Abstract
An implantable active pressure transducer including a pressure sensing element and associated sensor circuitry together enclosed within an innermost glass packaging. The pressure sensing element is anodically bonded to the innermost packaging substantially aligned with an opening defined therein. An outermost biocompatible metal packaging forms a cavity divided into first and second chambers by an intermediate partition. The innermost packaging is disposed within the first chamber without physically directly contacting or being fixed to the outermost packaging. A barrier plate is hermetically sealed to the intermediate partition to hermetically isolate the battery and communication circuitry from a pressure transmitting fluid. Inductive coupling is used to communicate data detected by the pressure sensing element internally within the implant.
22 Citations
26 Claims
-
1. An implantable active pressure transducer comprising:
-
a pressure sensing element; sensor circuitry for operating the pressure sensing element, the sensor circuitry electrically connected to the pressure sensing element; an innermost packaging enclosing the pressure sensing element and the sensor circuitry;
the innermost packaging having an opening defined therein;
the pressure sensing element being bonded to the innermost packaging substantially aligned with the opening defined therein;an outermost packaging made of a metal forming an interior cavity divided into first and second chambers;
the innermost packaging being disposed within the first chamber without being fixed to the outermost packaging;
the outermost packaging having an inlet and an outlet both in fluid communication with the first chamber for allowing a flow of a pressure transmitting fluid into the outermost packaging and through the opening defined in the innermost packaging so as to be in contact with the pressure sensing element;communication circuitry disposed within the second chamber; and a battery disposed within the second chamber and electrically connected to power the communication circuitry, the communication circuitry and battery being hermetically isolated from the pressure transmitting fluid in the first chamber. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15, 16, 17, 18, 19, 20, 21, 22, 23, 24)
-
-
25. A medical device comprising:
-
an innermost packaging enclosing first electronic circuitry associated with the medical device; an outermost packaging made of a metal forming an interior cavity divided into first and second chambers by a hermetically sealed interface structure free of any electrical connection feed-throughs defined therein;
the innermost packaging being disposed within the first chamber;a first inductive coupling for establishing communication between a first antenna and a second antenna, wherein the first antenna is disposed interior of the innermost packaging and interior of the first chamber; and
wherein the second antenna is disposed exterior of the innermost packaging and exterior of the first chamber of the outermost packaging; anda third antenna disposed exterior of the outermost packaging, communication being established between the second and third antennas by way of respective electrical wiring to second electronic circuitry.
-
-
26. A system comprising:
-
a medical device including; an innermost packaging enclosing first electronic circuitry associated with the medical device; an outermost packaging made of a metal forming an interior cavity divided into first and second chambers by a hermetically sealed interface structure free of any electrical connection feed-throughs defined therein;
the innermost packaging being disposed within the first chamber;a first inductive coupling for establishing communication between a first antenna and a second antenna, wherein the first antenna is disposed interior of the innermost packaging and interior of the first chamber; and
wherein the second antenna is disposed exterior of the innermost packaging and exterior of the first chamber of the outermost packaging; anda third antenna disposed exterior of the outermost packaging, communication being established between the second and third antennas by way of respective electrical wiring to second electronic circuitry associated with the medical device; and an external device including a fourth antenna in wireless communication with the third antenna of the medical device.
-
Specification