Catheter system and methods thereof
First Claim
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1. A catheter system comprising:
- (a) a catheter assembly with a tip section, a distal end, a proximal end, a surface, and at least one lumen extending therebetween, wherein the tip section has at least one electrode;
(b) a handle attached to the proximal end of said catheter assembly;
(c) a catheter sheath having a retractable fixation deployment means secured at a securing point on the surface of the catheter assembly, wherein the securing point is located proximal to the tip section of the catheter assembly, and wherein said retractable fixation deployment means includes a plurality of spaced apart expandable members, comprising a non-deployed state for said retractable fixation means when said catheter system is advanced into the body of a patient and/or removed from the body, and further comprising a distended deployed state for said retractable fixation deployment means when said catheter system is inside the body of a patient;
(d) an inner catheter, which is located inside the at least one lumen of the catheter assembly, comprising a flexible elongate tubular member having a distal section, and proximal and distal extremities, wherein said proximal extremity of the inner catheter is attached to the handle.
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Abstract
This invention discloses an ablation catheter system with fixation means for use in treatment of cardiac tissues and in other medical applications, such as ablating tumors in a natural body conduit or cavity by applying RF energy, and an inner catheter having alternate energy sources for enhanced ablation. The catheter system passes through a natural body opening to reach the target tissue, where the catheter system stays in a desired position via its fixation means and delivers therapeutic energy selected from the group of laser energy, microwave, inductive radiofrequency and ultrasonic energy to the target tissue for improved treatment.
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Citations
19 Claims
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1. A catheter system comprising:
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(a) a catheter assembly with a tip section, a distal end, a proximal end, a surface, and at least one lumen extending therebetween, wherein the tip section has at least one electrode; (b) a handle attached to the proximal end of said catheter assembly; (c) a catheter sheath having a retractable fixation deployment means secured at a securing point on the surface of the catheter assembly, wherein the securing point is located proximal to the tip section of the catheter assembly, and wherein said retractable fixation deployment means includes a plurality of spaced apart expandable members, comprising a non-deployed state for said retractable fixation means when said catheter system is advanced into the body of a patient and/or removed from the body, and further comprising a distended deployed state for said retractable fixation deployment means when said catheter system is inside the body of a patient; (d) an inner catheter, which is located inside the at least one lumen of the catheter assembly, comprising a flexible elongate tubular member having a distal section, and proximal and distal extremities, wherein said proximal extremity of the inner catheter is attached to the handle. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12)
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13. A method for operating a catheter system, the catheter assembly having a tip section, a distal end, a proximal end, a surface, and at least one lumen extending therebetween, wherein the tip section has at least one electrode;
- a handle attached to the proximal end of said catheter assembly;
a catheter sheath having a retractable fixation deployment means secured at a securing point on the surface of the catheter assembly, wherein the securing point is located proximal to the tip section of the catheter assembly, and wherein said retractable fixation deployment means includes a plurality of spaced apart expandable members, comprising a non-deployed state for said retractable fixation means when said catheter system is advanced into the body of a patient and/or removed from the body, and further comprising a distended deployed state for said retractable fixation deployment means when said catheter system is inside the body of a patient;
an inner catheter, which is located inside the lumen of the catheter assembly, comprising a flexible elongate tubular member having a distal section, and proximal and distal extremities, wherein said proximal extremity of the inner catheter is attached to the handle, and wherein at least one electrode is mounted on the tip section of the inner catheter;the method comprising; introducing the catheter system having an inner catheter, a catheter assembly and an outer catheter sheath with a retractable fixation deployment means under a non-deployed state, into the body through a natural body opening; once approaching the target tissue, deploying the retractable fixation deployment means of said catheter sheath by a deployment mechanism located at the handle; measuring the endocardial electricity from or applying alternate energy to the at least one electrode on the distal section of the inner catheter; and applying the alternate energy source for enhanced ablation. - View Dependent Claims (14, 15, 16, 17)
- a handle attached to the proximal end of said catheter assembly;
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18. A tissue ablation catheter system comprising:
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a catheter assembly with a distal section, a distal end, a proximal end, an exterior surface, and at least one lumen extending therebetween; a handle attached to the proximal end of said catheter assembly; a catheter sheath having a retractable fixation deployment means secured at a securing point on the exterior surface of the catheter assembly, wherein the securing point is located proximal to the tip section of the catheter assembly, and wherein said retractable fixation deployment means including a plurality of spaced apart expandable members, comprising a non-deployed state for said retractable fixation means when said catheter system being advanced into the body of a patient and/or being removed from the body, and further comprising a distended deployed state for said retractable fixation deployment means when said catheter system is positioned inside the body of a patient; and an inner catheter, which is located inside the at least one lumen of the catheter assembly, comprising a flexible elongate tubular member having a distal section, and proximal and distal extremities, wherein said proximal extremity of the inner catheter is attached to the handle. - View Dependent Claims (19)
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Specification