Energy transfer amplification for intrabody devices
First Claim
Patent Images
1. Apparatus for use in an invasive medical procedure, comprising:
- a wireless position sensor, which is adapted to be inserted into a body of a subject, the position sensor comprising a power circuit, which is adapted to be driven inductively by a radio-frequency (RF) electromagnetic field so as to provide operating energy to the position sensor;
a power transmitter, which is adapted to generate the RF electromagnetic field in a vicinity of the body; and
a passive energy transfer amplifier, which is adapted to be placed in proximity to the position sensor so as to enhance inductive driving of the power circuit of the wireless position sensor by the RF electromagnetic field, the position sensor transmitting signals for determining six position and orientation coordinates of the position sensor; and
a signal processing unit for receiving signals from the position sensor and determining six position and orientation coordinates of the position sensor.
1 Assignment
0 Petitions
Accused Products
Abstract
Apparatus for driving current in a power circuit of a medical device inserted into a body of a subject includes a power transmitter, which is adapted to generate, in a vicinity of the body, an electromagnetic field having a predetermined frequency capable of inductively driving the current in the power circuit. A passive energy transfer amplifier, having a resonant response at the frequency of the electromagnetic field is placed in proximity to the medical device so as to enhance the current driven in the power circuit by the electromagnetic field.
55 Citations
19 Claims
-
1. Apparatus for use in an invasive medical procedure, comprising:
-
a wireless position sensor, which is adapted to be inserted into a body of a subject, the position sensor comprising a power circuit, which is adapted to be driven inductively by a radio-frequency (RF) electromagnetic field so as to provide operating energy to the position sensor; a power transmitter, which is adapted to generate the RF electromagnetic field in a vicinity of the body; and a passive energy transfer amplifier, which is adapted to be placed in proximity to the position sensor so as to enhance inductive driving of the power circuit of the wireless position sensor by the RF electromagnetic field, the position sensor transmitting signals for determining six position and orientation coordinates of the position sensor; and a signal processing unit for receiving signals from the position sensor and determining six position and orientation coordinates of the position sensor. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11)
-
-
12. Apparatus for use in an invasive medical procedure, comprising;
-
a wireless position sensor, which is adapted to be inserted into a body of a subject, the device comprising a power circuit, which is adapted to be driven inductively by a radio-frequency (RF) electromagnetic field generated by a power transmitter outside the body, so as to provide operating energy to the wireless position sensor; and a passive energy transfer amplifier, which is adapted to be placed in proximity to the wireless position sensor so as to enhance inductive driving of the power circuit of the wireless position sensor by the RF electromagnetic field, the wireless position sensor transmitting signals for determining six position and orientation coordinates of the position sensor; and a signal processing unit for receiving signals from the position sensor and determining six position and orientation coordinates of the position sensor.
-
-
13. An orthopedic implant, comprising:
-
a prosthetic joint comprising first and second joint elements, which are adapted to be implanted in a body of a subject; first and second wireless position sensors, which are respectively fixed to the first and second joint elements so as to transmit position signals indicative of an alignment of the first and second joint elements, each of the position sensors comprising a power circuit, which is adapted to be driven inductively by a radio-frequency (RF) electromagnetic field so as to provide operating energy to the sensors; a power transmitter, which is adapted to generate the RF electromagnetic field in a vicinity of the body; and a passive energy transfer amplifier, which is fixed to at least one of the first and second joint elements so as to enhance inductive driving of the power circuit of the wireless position sensors by the RF electromagnetic field; and a signal processing unit for receiving the position signals and determining six position and orientation coordinates for the first and second wireless position sensor. - View Dependent Claims (14, 15)
-
-
16. Invasive medical apparatus, comprising:
-
a catheter, having a distal end, which is adapted to be inserted into a heart of a subject, the catheter comprising a wireless position sensor, fixed adjacent to the distal end of the catheter so as to transmit position signals indicative of a position of the catheter within the heart, the position sensor comprising a power circuit, which is adapted to be driven inductively by a radio-frequency (RF) electromagnetic field so as to provide operating energy to the position sensor;
a power transmitter, which is adapted to generate the RF electromagnetic field in a vicinity of the body; anda passive energy transfer amplifier, which is adapted to be placed in a vicinity of the heart so as to enhance inductive driving of the power circuit of the wireless position sensors by the RF electromagnetic field; and a signal processing unit for receiving the position signals and determining six position and orientation coordinates for the wireless position sensor. - View Dependent Claims (17, 18, 19)
-
Specification