Spiral balloon catheter
First Claim
1. A balloon catheter system comprising one or more conduits to which is/are attached a compliant balloon having a non-helical shape and surrounding the one or more conduits in a non-spiral manner in its deflated state, wherein said balloon is constructed such that is capable of adopting a spiral or helical conformation upon inflation based upon an intrinsic ability of the balloon.
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Accused Products
Abstract
The present invention provides a balloon catheter system comprising one or more conduits to which are attached a compliant balloon having a non-helical shape in its deflated state, wherein said balloon is constructed such that is capable of adopting a spiral or helical conformation upon inflation. In addition, the present invention also provides methods for using said balloon catheter system.
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Citations
22 Claims
- 1. A balloon catheter system comprising one or more conduits to which is/are attached a compliant balloon having a non-helical shape and surrounding the one or more conduits in a non-spiral manner in its deflated state, wherein said balloon is constructed such that is capable of adopting a spiral or helical conformation upon inflation based upon an intrinsic ability of the balloon.
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7. A method for removing particulate matter from a body passage in a patient in need of such treatment, comprising the steps of:
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a) providing a catheter fitted with a compliant balloon and an aspiration element, wherein said balloon is constructed such that it has a non-spiral shape when deflated and adopts a spiral conformation when inflated; b) introducing said catheter into a peripheral blood vessel and advancing same until said balloon is located in the region of the particulate matter to be removed; c) inflating said balloon such that it adopts a spiral conformation, thereby causing said particulate matter to enter said spiral channel thus formed in the external surface of the balloon, and to becomes squeezed and elongated between said balloon and said blood vessel wall; d) aspirating said squeezed particulate matter into said aspiration element, wherein said aspiration may be performed continuously or intermittently; e) optionally partially or completely deflating the balloon and re-locating the catheter such that said balloon becomes located in another region of particulate matter to be removed, and repeating steps (c) and (d); f) completely deflating the balloon and withdrawing the catheter from the patient'"'"'s vasculature. - View Dependent Claims (8)
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9. A method for removing thrombotic material from a body passage in a patient in need of such treatment, comprising the steps of:
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a) providing a catheter fitted with a compliant balloon, as disclosed hereinabove, wherein said balloon is constructed such that it has a non-spiral shape when deflated and adopts a spiral conformation when inflated; b) introducing said catheter into a peripheral blood vessel and advancing same until said balloon is located in the region of the thrombotic material to be removed; c) inflating said balloon such that it adopts a spiral conformation having a spiral channel winding around the external surface of said balloon, thereby causing said thrombotic material to enter said spiral channel and to becomes squeezed and elongated between said balloon and said blood vessel wall; d) deflating said balloon, thereby creating a space between the deflated balloon and the squeezed thrombotic material, into which a thrombolytic agent may be introduced, thereby enhancing thrombo-dissolution; e) rapidly repeating steps (c) and (d); and f) completely deflating the balloon and withdrawing the catheter from the patient'"'"'s vasculature.
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10. A method for removing a thrombus from a body passage in a patient in need of such treatment, comprising the steps of:
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a) providing a catheter fitted with a compliant balloon, as disclosed hereinabove, wherein said balloon is constructed such that it has a non-spiral shape when deflated and adopts a spiral conformation when inflated; b) introducing said catheter into a peripheral blood vessel and advancing same until said balloon is located in the region of the thrombus to be removed; c) trapping the thrombus within the spiral channel formed by inflation of the balloon d) withdrawing the catheter through the vasculature and out of the body, together with said entrapped thrombus.
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11. A balloon catheter system comprising one or more conduits to which are attached an inner compliant balloon having a non-helical shape and surrounding the one or more conduits in a non-spiral manner in its deflated state, said balloon being enclosed by an outer non-compliant or semi-compliant balloon,
wherein the inner balloon is constructed such that upon inflation, said inner balloon is capable of adopting a spiral or helical conformation based upon an intrinsic ability of the balloon, and wherein said outer balloon is perforated by a first set of pores along most or all of its surface, and is further perforated by a second set of pores or openings at the proximal neck thereof, wherein the pores of said second set are significantly fewer in number and larger in diameter than said first set.
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17. A balloon catheter system comprising:
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one or more conduits; a compliant balloon surrounding the one or more conduits, wherein the compliant balloon has a non-helical shape in a deflated state, and wherein an outer surface of the compliant balloon forms a spiral or helical shape in an inflated state; wherein a surface of the compliant balloon adjacent an outer surface of the one or more conduits extends along a spiral or helical path when the compliant balloon is in the inflated state. - View Dependent Claims (18, 19, 20)
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Specification