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US 2003/0125601 A1Published application
Intra-aortic balloon catheter having a dual sensor pressure sensing system
AssigneeDatascope Investment Corp.
InventorsRobert B. Schock, Jonathan Williams, Daniel A. Walters
Life of this patent
Estimating the term…
Abstract
A balloon catheter having a blood pressure sensor connected to the catheter and also a fluid-filled transducer system for adjusting the blood pressure sensor measurements.
Claims28
A balloon catheter system comprising a balloon catheter, a fluid-filled pressure measurement system, and a catheter pressure sensor,
- said balloon catheter comprising a balloon membrane, a tip, a proximal fitting and an outer tube, a distal end of the balloon membrane being connected to the tip, a proximal end of the outer tube being connected to the proximal fitting,
- said catheter pressure sensor connected to the balloon catheter, said fluid-filled pressure measurement system comprising a fluid source, connected to the proximal fitting via a fluid source line, and a pressure sensor for measuring pressure in said fluid source line.
A method for measuring pressure in a bodily vessel comprising the steps of:
- a) inserting a balloon catheter into said bodily vessel, said balloon catheter comprising a balloon membrane, a tip, a catheter pressure sensor connected to said balloon catheter, an outer tube, a fluid-filled pressure measurement system and a proximal fitting connected to a proximal end of the outer tube, a distal end of the balloon membrane being connected to the tip, said fluid-filled pressure measurement system comprising a fluid source, connected to the proximal fitting via a fluid source line, and a fluid pressure sensor for measuring pressure in said fluid source line;
- b) measuring pressure in the bodily vessel via the fluid pressure sensor and via the catheter pressure sensor;
- and
- c) using the fluid pressure sensor measurements to adjust the catheter pressure sensor measurements.
1 more element
A method for measuring pressure in a bodily vessel comprising the steps of:
- a) inserting a balloon catheter into said bodily vessel, said balloon catheter comprising a balloon membrane, a tip, a catheter pressure sensor connected to said balloon catheter, an outer tube, a fluid-filled pressure measurement system and a proximal fitting connected to a proximal end of the outer tube, a distal end of the balloon membrane being connected to the tip, said fluid-filled pressure measurement system comprising a fluid source, connected to the proximal fitting via a fluid source line, and a fluid pressure sensor for measuring pressure in said fluid source line;
- b) measuring pressure in the bodily vessel via the fluid pressure sensor and via the catheter pressure sensor;
- and
- c) using the catheter pressure sensor measurements to adjust the fluid pressure sensor measurements.
1 more element
A method for measuring pressure in a bodily vessel comprising the steps of:
- a) inserting a balloon catheter into said bodily vessel, said balloon catheter comprising a balloon membrane, a tip, a catheter pressure sensor connected to said balloon catheter, an outer tube, a fluid-filled pressure measurement system and a proximal fitting connected to a proximal end of the outer tube, a distal end of the balloon membrane being connected to the tip, said fluid-filled pressure measurement system comprising a fluid source, connected to the proximal fitting via a fluid source line, and a fluid pressure sensor for measuring pressure in said fluid source line;
- b) measuring pressure in the bodily vessel via the fluid pressure sensor and via the catheter pressure sensor;
- c) outputting the tip pressure sensor measurements;
- d) at a predetermined time interval comparing the catheter pressure sensor measurement to the fluid pressure sensor measurement, if the measurements vary over a predetermined amount, then outputting the fluid pressure measurements;
- and
- e) repeating steps (b) and (d).
3 more elements
A method for measuring pressure in a bodily vessel comprising the steps of:
- a) inserting a balloon catheter into said bodily vessel, said balloon catheter comprising a balloon membrane, a tip, a catheter pressure sensor connected to said balloon catheter, an outer tube, a fluid-filled pressure measurement system and a proximal fitting connected to a proximal end of the outer tube a distal end of the balloon membrane being connected to the tip, said fluid-filled pressure measurement system comprising a fluid source, connected to the proximal fitting via a fluid source line, and a fluid pressure sensor for measuring pressure in said fluid source line;
- b) measuring pressure in the bodily vessel via the fluid pressure sensor and via the catheter pressure sensor;
- and
- c) outputting the catheter pressure sensor measurement adjusted by the difference between the catheter pressure sensor measurement and the fluid pressure sensor measurement if the fluid pressure sensor measurement is greater or less than the catheter pressure sensor measurement by a predetermined amount, otherwise outputting the catheter pressure sensor measurement.
1 more element
Dependencies are inferred from the claim text.