Adjustable treatment chamber catheter
First Claim
1. An adjustable treatment chamber for insertion into a biological conduit, comprising:
- inner and outer coaxial catheter members, both members having a distal end and a proximal end and being slidable with respect to each other;
two expandable sealing members, one sealing member being disposed near the distal end of each catheter member;
means for expanding the sealing members to form a pair of seals with the biological conduit, an adjustable length treatment chamber being defined within the conduit and between the sealsan intermediate coaxial catheter member located between the inner and the outer coaxial catheter members and having a distal end and a proximal end, the intermediate catheter member being slidable and rotatable with respect to the other catheter members; and
burden loosening means disposed near the distal end of the intermediate catheter member for sliding and axial rotation within the treatment chamber to loosen plaque burden deposited on the biological conduit,whereby, when the adjustable treatment chamber catheter is inserted into the biological conduit and the catheter members are slid with respect to each other to extend the distal end of the inner catheter member beyond the distal end of the outer catheter member and to adjust the longitudinal separation between the sealing members to a predetermined distance, the sealing members then being expanded, the adjustable length treatment chamber is created within the conduit and between the seals.
2 Assignments
0 Petitions
Accused Products
Abstract
Disclosed herein is a catheter device for treatment of disease in biological conduits. The device has inner and outer coaxial catheter members, each having an inflatable balloon attached near its distal end. When the balloons are inflated, a sealed treatment chamber is created between the balloons. The length of the treatment chamber is adjustable by sliding the coaxial catheter members with respect to each other to obtain a desired separation between the attached balloons before inflation. Biological debris is trapped within the chamber and removed by infusion and aspiration of a flushing fluid, reducing the risk of myocardial infarction. Adjunctive treatment devices can be inserted into the sealed treatment chamber through a lumen of the outer coaxial member.
545 Citations
21 Claims
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1. An adjustable treatment chamber for insertion into a biological conduit, comprising:
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inner and outer coaxial catheter members, both members having a distal end and a proximal end and being slidable with respect to each other; two expandable sealing members, one sealing member being disposed near the distal end of each catheter member; means for expanding the sealing members to form a pair of seals with the biological conduit, an adjustable length treatment chamber being defined within the conduit and between the seals an intermediate coaxial catheter member located between the inner and the outer coaxial catheter members and having a distal end and a proximal end, the intermediate catheter member being slidable and rotatable with respect to the other catheter members; and burden loosening means disposed near the distal end of the intermediate catheter member for sliding and axial rotation within the treatment chamber to loosen plaque burden deposited on the biological conduit, whereby, when the adjustable treatment chamber catheter is inserted into the biological conduit and the catheter members are slid with respect to each other to extend the distal end of the inner catheter member beyond the distal end of the outer catheter member and to adjust the longitudinal separation between the sealing members to a predetermined distance, the sealing members then being expanded, the adjustable length treatment chamber is created within the conduit and between the seals. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11)
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12. A treatment chamber catheter for insertion into a biological conduit, comprising:
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a first catheter member having proximal and distal ends and an outer surface, an inflatable sealing member being disposed on the outer surface at the distal end, and an inflation lumen having an opening for communication with the sealing member and extending from the proximal end to the opening; a second catheter member having proximal and distal ends and an outer surface, a burden loosening member being disposed on the outer surface at the distal end, and an infusion lumen extending from the proximal to the distal end and loosely enclosing the first catheter member proximally of the distal sealing member and being adapted for axial rotation about the first catheter member; and a third catheter member having proximal and distal ends and an outer surface, a proximal inflatable sealing member being disposed on the outer surface, an inflation lumen having an opening to the proximal inflatable sealing member and extending from the proximal end to the opening, and an aspiration lumen extending from the proximal end to the distal end and loosely enclosing the second catheter member proximally of the burden loosening members, a treatment chamber being defined within the conduit and between the expandable sealing members. - View Dependent Claims (13, 14, 15, 16, 17, 18)
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19. A fluid sealed treatment chamber catheter device for insertion into a biological conduit and having a treatment chamber of adjustable length, the catheter device comprising:
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distal sealing means for creating a distal fluid seal within the biological conduit, the distal sealing means being attached near a distal end of a first catheter member; burden loosening means for the reduction of biological tissue at a treatment site, the burden loosening means being attached radially near a distal end of a second catheter member, the second catheter member including an infusion lumen, the lumen slidably and rotationally enclosing the first catheter member proximally to the distal sealing means; and proximal sealing means for creating a proximal fluid seal within the biological conduit, the proximal sealing means being attached near a distal end of a third catheter member, the third catheter member including an aspiration lumen having a diameter substantially greater than a diameter of the second catheter member and enclosing the second catheter member proximally to the burden loosening means, whereby, when the catheter device is inserted into a biological conduit, the distal sealing means being positioned distally to a treatment site, and the third catheter member being slid with respect to the first catheter member to locate the proximal sealing means proximally to the treatment site and at an adjustable distance from the distal sealing means, a fluid sealed treatment chamber of adjustable length is thereby created within the conduit and between the sealing means. - View Dependent Claims (20, 21)
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Specification