Remote sensing catheter system and methods
First Claim
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1. A system that removes a coronary artery injection of medium from a coronary sinus, the system comprising:
- a) a collection catheter having a distal end positionable within a coronary sinus;
b) an aspiration device in fluid communication with the collection catheter;
c) an injection device;
d) an injection catheter having a distal end positionable proximate a coronary artery;
e) an injection sensor that cooperates with at least one of the injection device and the injection catheter, wherein the injection sensor is located proximate the injection catheter and external to a patient'"'"'s body during use, and is adapted to detect an injection of a medium in the injection catheter; and
f) an interface unit, the interface unit being electrically connected to the injection sensor and the aspiration device, wherein the interface unit;
i) establishes a start time of the coronary artery injection of medium when the injection sensor detects the injection of the medium;
ii) determines a significance of the volume of medium;
iii) initiates aspiration by the aspirating unit to the collection catheter about 2 seconds to about 6 seconds after the start time of the injection, the initiation of operation occurring only if, and when, the volume of medium in the injection is determined to be significant; and
iv) ceases operation of the aspiration unit to the collection catheter after about 4 seconds to about 10 seconds after a cessation of a significant injection.
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Abstract
A remote sensing catheter system including an injection catheter and a collection catheter. In one method of use, an external sensor of the system determines the timing of operation of the collection catheter. In another method of use, a sensor determines the volume of medium in the injection.
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Citations
8 Claims
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1. A system that removes a coronary artery injection of medium from a coronary sinus, the system comprising:
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a) a collection catheter having a distal end positionable within a coronary sinus; b) an aspiration device in fluid communication with the collection catheter; c) an injection device; d) an injection catheter having a distal end positionable proximate a coronary artery; e) an injection sensor that cooperates with at least one of the injection device and the injection catheter, wherein the injection sensor is located proximate the injection catheter and external to a patient'"'"'s body during use, and is adapted to detect an injection of a medium in the injection catheter; and f) an interface unit, the interface unit being electrically connected to the injection sensor and the aspiration device, wherein the interface unit; i) establishes a start time of the coronary artery injection of medium when the injection sensor detects the injection of the medium; ii) determines a significance of the volume of medium; iii) initiates aspiration by the aspirating unit to the collection catheter about 2 seconds to about 6 seconds after the start time of the injection, the initiation of operation occurring only if, and when, the volume of medium in the injection is determined to be significant; and iv) ceases operation of the aspiration unit to the collection catheter after about 4 seconds to about 10 seconds after a cessation of a significant injection. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8)
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Specification