Gauging system for monitoring channel depth in percutaneous endocardial revascularization
First Claim
1. A gauging system for monitoring channel depth in percutaneous endocardial revascularization surgery, comprising:
- a catheter for percutaneous insertion into a heart chamber, including a source of tissue ablative energy for ablating a part of a wall of the heart chamber where a channel is to be created;
a sensor device proximate a distal end of said catheter for sensing a boundary of the heart wall proximate the channel; and
a detection circuit, responsive to said sensor device, for determining a position of a terminus of said channel.
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Accused Products
Abstract
A gauging system for monitoring channel depth in percutaneous endocardial revascularization surgery includes a catheter for percutaneous insertion into a heart chamber, including a source of tissue ablative energy for ablating a part of the wall of the heart chamber where a channel is to be created; a sensor device proximate the distal end of the catheter for sensing a boundary of the heart wall proximate the channel; and a detection circuit, responsive to the sensor device, for determining the position of the terminus of the channel in the heart chamber; alternatively, a mechanical stop extending radially beyond the distal tip may be used for physically limiting penetration of the catheter tip into the drilled channels.
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Citations
18 Claims
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1. A gauging system for monitoring channel depth in percutaneous endocardial revascularization surgery, comprising:
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a catheter for percutaneous insertion into a heart chamber, including a source of tissue ablative energy for ablating a part of a wall of the heart chamber where a channel is to be created; a sensor device proximate a distal end of said catheter for sensing a boundary of the heart wall proximate the channel; and a detection circuit, responsive to said sensor device, for determining a position of a terminus of said channel. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11)
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12. A gauging system for monitoring channel depth in percutaneous endocardial revascularization surgery, comprising:
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a catheter for percutaneous insertion into a heart chamber, for ablating a part of a wall of the heart chamber where a channel is to be created; a mechanical stop extending radially from a distal tip of the catheter for physically limiting penetration of the distal tip into the channels; and at least one sensor element on the mechanical stop for detecting when the mechanical stop is in contact with the wall of the heart chamber. - View Dependent Claims (13)
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14. A gauging system for monitoring channel depth in percutaneous endocardial revascularization surgery, comprising:
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a catheter, for percutaneous insertion into a heart chamber, for ablating a part of the heart wall where a channel is to be created; a sensor device including at least one sensor element proximate a distal end of said catheter for sensing the difference in force exerted on said sensor element by the heart tissue and the blood; and a detection circuit, responsive to said sensor device, for determining the position of a terminus of the channel in said heart chamber. - View Dependent Claims (15, 16, 17, 18)
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Specification