Catheter system having a tip with fixation means
First Claim
Patent Images
1. A catheter system comprising:
- (a) a catheter sheath with a distal section, a distal end, a proximal end, and at least one lumen extending therebetween;
(b) a handle attached to the proximal end of said catheter sheath;
(c) an inner catheter, which is longer than said catheter sheath and located inside the lumen of the catheter sheath, comprising a flexible elongate tubular member having a distal section, and proximal and distal extremities, at least one ablation electrode mounted on the distal section of the flexible elongate tublar member of the inner catheter, and wherein said handle is attached to the proximal extremity of the inner catheter; and
(d) the distal section of said catheter sheath having a retractable time fixation deployment means secured at a securing point on the flexible elongate tubular member of the inner catheter, wherein the securing point is located proximal to the distal section of the flexible elongate tubular member of the inner catheter, and wherein said retractable time fixation deployment means includes a plurality of spaced apart expandable members, wherein the retractable time fixation means has a non-deployed state and a distended deployed state, whereby the non-deployed state is used for advancing and removing the catheter and the distended deployed state is used for fixing the catheter to a targeted location.
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Abstract
A catheter system having a tip with fixation means for use in treatment of tissues, such as ablating tumors in a natural body conduit or cavity by applying RF energy through the tip, wherein the catheter system passes through a natural body opening to reach the target tissue, wherein the catheter system stays at a desired position via its fixation means, and delivers therapeutic RF energy to the target tissue for improved tissue treatment.
98 Citations
12 Claims
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1. A catheter system comprising:
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(a) a catheter sheath with a distal section, a distal end, a proximal end, and at least one lumen extending therebetween; (b) a handle attached to the proximal end of said catheter sheath; (c) an inner catheter, which is longer than said catheter sheath and located inside the lumen of the catheter sheath, comprising a flexible elongate tubular member having a distal section, and proximal and distal extremities, at least one ablation electrode mounted on the distal section of the flexible elongate tublar member of the inner catheter, and wherein said handle is attached to the proximal extremity of the inner catheter; and (d) the distal section of said catheter sheath having a retractable time fixation deployment means secured at a securing point on the flexible elongate tubular member of the inner catheter, wherein the securing point is located proximal to the distal section of the flexible elongate tubular member of the inner catheter, and wherein said retractable time fixation deployment means includes a plurality of spaced apart expandable members, wherein the retractable time fixation means has a non-deployed state and a distended deployed state, whereby the non-deployed state is used for advancing and removing the catheter and the distended deployed state is used for fixing the catheter to a targeted location. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8)
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9. A method for operating a catheter system comprising the steps of:
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(a) introducing the catheter system having an inner catheter and an outer catheter sheath under a non-deployed state into the body through a small surgery hole or through the natural body openings, wherein the catheter system comprises; a catheter sheath with a distal section, a distal end, a proximal end, and at least one lumen extending therebetween;
a handle attached to the proximal end of said catheter sheath;
an inner catheter, which is longer than said catheter sheath and located inside the lumen of the catheter sheath, comprising a flexible elongate tubular member having a distal section, and proximal and distal extremities, at least one ablation electrode mounted on the distal section of the flexible elongate tubular member of the inner catheter, and wherein said handle is attached to the proximal end of the inner catheter; and
the distal section of said catheter sheath having a retractable time fixation deployment means secured at a securing point on the flexible elongate tubular member of the inner catheter, wherein the securing point is located proximal to the distal section of the flexible elongate tubular member of the inner catheter, and wherein said retractable time fixation deployment means includes a plurality of spaced apart expandable members, wherein the retractable time fixation means has a non-deployed state and a distended deployed state, whereby the non-deployed state is used for advancing and removing the catheter and the distended deployed state is used for fixing the catheter to a targeted location; and(b) once approaching the target tissue, deploying the retractable time fixation deployment means at distal section of said catheter sheath by a deployment mechanism located at the handle. - View Dependent Claims (10, 11, 12)
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Specification