Accessory pathway detecting/cauterizing apparatus
First Claim
1. An accessory pathway detecting apparatus for detecting an accessory pathway in an object to be tested, comprising:
- a first electrode member having a plurality of electrodes located along a longitudinal extent of the first electrode member, said first electrode member having a wire shape capable of being inserted in a coronary sinus to acquire action potentials at a plurality of locations along the coronary sinus;
a second electrode member having a plurality of electrodes located along a longitudinal extent of said second electrode member, said second electrode member having a wire-like shape capable of being inserted in a coronary artery to acquire action potentials at a plurality of locations along the coronary artery;
measuring means for simultaneously measuring the action potentials at the plurality of locations by using said first and second electrode members; and
output means for visually outputting measurement results obtained by said measuring means.
1 Assignment
0 Petitions
Accused Products
Abstract
An accessory pathway detecting apparatus measures action potentials from first and second electrode leads, and outputs the obtained action potentials, as potential maps, to a CRT or a printer such that the action potentials can be displayed in the form of a list. An ablation catheter is inserted and located at a preexcitation portion obtained from the display, and the impedance between each of the electrodes of the first and second electrode leads and the electrode of the ablation catheter is measured by an impedance measuring circuit. A point where the lowest impedance is measured is regarded as an accessory pathway portion. The ablation catheter is fixed at this point.
-
Citations
39 Claims
-
1. An accessory pathway detecting apparatus for detecting an accessory pathway in an object to be tested, comprising:
-
a first electrode member having a plurality of electrodes located along a longitudinal extent of the first electrode member, said first electrode member having a wire shape capable of being inserted in a coronary sinus to acquire action potentials at a plurality of locations along the coronary sinus; a second electrode member having a plurality of electrodes located along a longitudinal extent of said second electrode member, said second electrode member having a wire-like shape capable of being inserted in a coronary artery to acquire action potentials at a plurality of locations along the coronary artery; measuring means for simultaneously measuring the action potentials at the plurality of locations by using said first and second electrode members; and output means for visually outputting measurement results obtained by said measuring means. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12)
-
-
13. An accessory pathway detecting apparatus for detecting an accessory pathway in an object to be tested, comprising:
-
a first electrode member having a plurality of electrodes insulated from each other and having a shape capable of being inserted in the object; action potential measuring means for simultaneously measuring action potentials at a plurality of locations by using the plurality of electrodes of said first electrode member; a second electrode member having a shape capable of being inserted in the object and having an electrode at a predetermined position; and measuring means for measuring an impedance between each electrode of said first electrode member and the electrode of said second electrode member. - View Dependent Claims (14, 15, 16, 17, 18)
-
-
19. An accessory pathway cauterizing apparatus for detecting and cauterizing an accessory pathway in an object to be tested, comprising:
-
a first electrode having a shape capable of being inserted in a first portion of the object and having a plurality of electrodes insulated from each other; a second electrode having a shape capable of being inserted in a second portion of the object and having a plurality of electrodes insulated from each other; action potential measuring means for simultaneously measuring action potentials at a plurality of locations by using the plurality of electrodes of said first and second electrode members; an ablation catheter having an electrode arranged at a predetermined position; and measuring means for measuring an impedance between each electrode of said first and second electrode members and the electrode of said ablation catheter. - View Dependent Claims (20, 21, 22, 23, 24, 25, 26, 27, 28)
-
-
29. An accessory pathway detecting apparatus for detecting an accessory pathway in a heart to be tested, comprising:
-
a first electrode member having a plurality of electrodes located along a longitudinal extent of said first electrode member and insulated from each other, said first electrode member being in a shape of a wire and being capable of being inserted in a coronary sinus of the heart; a second electrode member having a plurality of electrodes located along a longitudinal extent of the second electrode member and insulated from each other, said second electrode member being in the shape of a wire and being capable of being inserted in a coronary artery of the heart; a third electrode member having a shape capable of being inserted in the heart and having an electrode at a predetermined position; first measuring means for simultaneously measuring action potentials at a plurality of locations by using said first and second electrode members; output means for visually outputting results obtained by said first measuring means; and second measuring means for measuring an impedance between each of the electrodes of said first and second electrode members and the electrode of said third electrode member.
-
-
30. An accessory pathway detecting apparatus for detecting and cauterizing an accessory pathway in an object to be tested, comprising:
-
a first electrode member having a plurality of electrodes located along a longitudinal extent of the first electrode member and insulated from each other, said first electrode member being in a shape of a wire and being capable of being inserted in a coronary sinus of the heart; a second electrode member having a plurality of electrodes located along a longitudinal extent of the second electrode member and insulated from each other, said second electrode member being in a shape of a wire and being capable of being inserted in a coronary artery of the heart; an ablation catheter having a shape capable of being inserted in the heart and having an electrode at a predetermined position; first measuring means for simultaneously measuring action potentials at pluralities of locations by using said first and second electrode members; output means for visually outputting results obtained by said first measuring means such that the results are displayed in the form of a list; and second measuring means for measuring an impedance between each of the electrodes of said first and second electrode members and the electrode of said ablation catheter. - View Dependent Claims (31)
-
-
32. The method of detecting an accessory pathway in an object to be tested, comprising the steps of:
-
inserting a first electrode member in a coronary sinus of a heart, said first electrode member being in a shape of a wire and having a plurality of electrodes located along a longitudinal extent of the first electrode member, said first electrode member being adapted to acquire action potentials at a plurality of locations along the coronary sinus; inserting a second electrode member in a coronary artery of the heart, said second electrode member having a wire shape and a plurality of electrodes located along a longitudinal extent of the second electrode member, said second electrode member being adapted to acquire action potentials at a plurality of locations along the coronary artery; simultaneously measuring the action potentials at the plurality of locations by using said first and second electrode members; and visually outputting measurement results obtained in said measuring step. - View Dependent Claims (33)
-
-
34. A method of detecting an accessory pathway in an object to be tested, comprising the steps of:
-
inserting a first electrode member in the object, said first electrode member having a plurality of electrodes insulated from each other; simultaneously measuring action potentials at a plurality of locations by using the plurality of electrodes of said first electrode member; inserting a second electrode member in the object;
said second electrode member having an electrode at a predetermined position; andmeasuring an impedance between each of the electrodes of said first electrode member and the electrode of said second electrode member.
-
-
35. A method of detecting and cauterizing an accessory pathway in an object to be tested, comprising the steps of:
-
inserting a first electrode member in a first portion of the object, said first electrode member having a plurality of electrodes insulated from each other; inserting a second electrode member in a second portion of the object, said second electrode member having a plurality of electrodes insulated from each other; simultaneously measuring action potentials at a plurality of locations by using the plurality of electrodes of said first and second electrode members; inserting an ablation catheter having an electrode arranged at a predetermined position into the object and measuring an impedance between each of the electrodes of said first and second electrode members and the electrode of said ablation catheter; and specifying an accessory pathway portion on the basis of measurement results of the impedances, and cauterizing the accessory pathway portion by using said ablation catheter. - View Dependent Claims (36)
-
-
37. A method of detecting an accessory pathway in an object to be tested, comprising the steps of:
-
inserting a first electrode member in a coronary sinus of a heart, said first electrode member having a wire shape and a plurality of electrodes located along a longitudinal extent of the first electrode member and insulated from each other; inserting a second electrode member in a coronary artery of the heart, said second electrode member having a wire shape and a plurality of electrodes located along a longitudinal extent of the second electrode member and insulated from each other; simultaneously measuring action potentials at a plurality of locations of the coronary sinus and coronary artery by using said first and second electrode members; visually outputting measurement results obtained in said measuring step so that an accessory pathway portion can be recognized by the output; inserting a third electrode member having an electrode into the heart to a position near the recognized accessory pathway portion; and specifying the accessory pathway portion by measuring an impedance between an electrode, of the electrodes of said first and second electrode members, located near the recognized accessory pathway portion and the electrode of said third electrode member.
-
-
38. A method of detecting and cauterizing an accessory pathway in an object to be tested, comprising the steps of:
-
inserting a first electrode member in a coronary sinus of a heart, said first electrode member having a wire shape and a plurality of electrodes located along a longitudinal extent of the first electrode member and insulated from each other; inserting a second electrode member in a coronary artery of the heart, said second electrode member having a wire shape and plurality of electrodes located along a longitudinal extent of the second electrode member and insulated from each other; simultaneously measuring action potentials at a plurality of locations along the coronary sinus and coronary artery by using said first and second electrode members; visually outputting measurement results so that an accessory pathway portion in the heart can be recognized on the basis of the output; inserting and locating an ablation catheter at the accessory pathway portion, said ablation catheter having an electrode at a predetermined position; measuring an impedance between each of the electrodes of said first and second electrode members and the electrode of said ablation catheter, thereby detecting the accessory pathway portion accurately and fixing said ablation catheter; and cauterizing the accessory pathway portion by using said ablation catheter.
-
-
39. A method of detecting and cauterizing an accessory pathway in an object to be tested, comprising the steps of:
-
inserting a first electrode member in a coronary sinus of a heart, said first electrode member having a wire shape and a plurality of electrodes located along a longitudinal extent of the first electrode member and insulated from each other; inserting a second electrode member in a coronary artery of the heart, said second electrode member having a wire shape and a plurality of electrodes located along a longitudinal extent of the second electrode member and insulated from each other; inserting an ablation catheter in the heart, said ablation catheter having an electrode for generating a stimulus pulse and performing impedance measurement; measuring a conduction time of a stimulus pulse generated by said catheter by simultaneously measuring action potentials at a plurality of locations along the coronary artery and the coronary sinus by using said first and second electrode members; visually outputting measurement results so that an accessory pathway portion of the heart can be recognized on the basis of the output; moving said ablation catheter to the accessory pathway portion of the heart; measuring an impedance between each of the electrodes of said first and second electrode members and the electrode of said ablation catheter, thereby detecting the accessory pathway portion accurately and fixing said ablation catheter; and cauterizing the accessory pathway portion by using said ablation catheter.
-
Specification