Large lumen balloon catheter
First Claim
1. A balloon catheter comprising:
- a first elongate tubular member having an outer surface, a proximal end, a distal end, having a substantial constant diameter, a working lumen extending between said distal and proximal ends and being open at said distal end, and a radially recessed region near the distal end, and a longitudinally stretched inflatable member situated within said radially recessed region providing said substantially constant diameter and being fluid-connectable with at least one fluid supply lumen independent of said working lumen.
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Accused Products
Abstract
This is a balloon catheter having at least two lumens. One of the lumens is a large working lumen. The balloon catheter is especially useful as a guide catheter and may be used in a variety of therapeutic and diagnostic procedures. In particular, it has value in treating neurovascular embolic strokes in combination with other devices which are delivered to the stroke site through that working lumen. The remainder of the lumens typically are used to inflate and to deflate the balloon. It is highly preferable that the balloon or inflatable member be situated in a recess in the outer wall of the inventive catheter. Additionally, the distal end of the catheter past the balloon is preferably tapered. The catheter has a very low profile as compared to other catheters of the neurovascular balloon catheter genre. It may include other features such as variable stiffness along the axis of the device and anti-kinking components. The balloon is preferably compliant in nature.
When intended for use in treating embolic stroke, the catheter may be a component of a kit including a foreign body retriever. Further, amongst other procedures, the invention includes methods of temporarily blocking a vascular lumen, of removing neurovascular or peripheral emboli. Other procedures, where diagnosis or treatment is needed in a vascular space and a large working lumen is desired, are suitable procedures for the balloon catheter.
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Citations
73 Claims
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1. A balloon catheter comprising:
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a first elongate tubular member having an outer surface, a proximal end, a distal end, having a substantial constant diameter, a working lumen extending between said distal and proximal ends and being open at said distal end, and a radially recessed region near the distal end, and a longitudinally stretched inflatable member situated within said radially recessed region providing said substantially constant diameter and being fluid-connectable with at least one fluid supply lumen independent of said working lumen. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15, 16, 17, 18, 19, 20, 21, 22, 23, 24, 25, 26, 27, 28, 29, 30, 31, 32, 33, 34, 35, 36, 37, 38, 39, 40, 41, 42, 43, 44, 45, 46, 47, 48, 49, 50)
a.) the balloon catheter of claim 1, b.) a dilator having a dilator lumen extending from a proximal end of the dilator to a distal end of the dilator, said dilator having a diameter closely fitting said balloon catheter lumen, c.) a microcatheter having a microcatheter lumen, d.) a guidewire slideable within a member selected from the group consisting of the dilator lumen and the microcatheter lumen, and e.) a clot retrieval device adapted to fit within the lumen of the balloon catheter with a retrieved clot.
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38. The kit of claim 37 wherein the microcatheter is a balloon catheter.
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39. The kit of claim 37 wherein the guidewire is adapted to slide within the dilator lumen.
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40. The kit of claim 37 wherein the guidewire is adapted to slide within the microcatheter lumen.
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41. A microballoon catheter kit comprising:
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a.) the balloon catheter of claim 1 of a flexibility, length, and diameter appropriate for a neurovascular microcatheter and having a microcatheter lumen, b.) a guidewire slideable within the microcatheter lumen, and c.) a clot retrieval device adapted to fit within the lumen of the balloon catheter and extend to a radially expanded state.
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42. A method for removing an embolus from a vascular lumen, comprising the steps of:
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(a) introducing the balloon catheter of claim 1 to a position proximal said embolus, (b) extending a microcatheter from the distal end of said balloon catheter to penetrate the embolus, (c) extending a clot removal device through the embolus past the microcatheter, (d) inflating the balloon of said balloon catheter to temporarily occlude the vascular lumen, (e) withdrawing the microcatheter into the balloon catheter, (f) withdrawing the clot removal device and the embolus into the balloon catheter, (g) deflating the balloon of said balloon catheter, and (h) withdrawing the balloon catheter and embolus.
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43. The method of claim 42 wherein the steps of withdrawing the microcatheter and withdrawing the clot removal device and the embolus into the balloon catheter are simultaneous.
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44. The method of claim 42 wherein the microcatheter is a balloon microcatheter.
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45. The method of claim 42 wherein the vascular lumen is the middle cerebral artery.
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46. The method of claim 42 wherein the vascular lumen is in a human periphery or coronary.
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47. A method for treating a site in a vascular lumen, comprising the steps of:
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(a) introducing the balloon catheter of claim 1 to a position in said lumen, (b) inflating the balloon of said balloon catheter to temporarily occlude the vascular lumen, (c) treating said site in the lumen, (d) deflating the balloon of said balloon catheter, and (e) withdrawing the balloon catheter.
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48. The method of claim 47 wherein the microcatheter is a balloon microcatheter.
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49. A method for performing a diagnostic step in a vascular lumen, comprising the steps of:
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(a) introducing the balloon catheter of claim 1 to a position in said lumen, (b) inflating the balloon of said balloon catheter to temporarily occlude the vascular lumen, (c) performing a diagnostic step at said site in the lumen, (d) deflating the balloon of said balloon catheter, and (e) withdrawing the balloon catheter.
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50. The method of claim 48 wherein the microcatheter is a balloon microcatheter.
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51. A microballoon catheter comprising:
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a first elongate polymeric tubular member having an outer surface, a proximal end, a distal end, a working lumen extending between said distal and proximal ends and being open at said distal end, and a radially recessed region near the distal end, and a longitudinally-stretched inflatable member situated within said radially recessed region providing a substantially constant diameter in a region adjacent and across the radially recessed region and being fluid-connectable with at least one fluid supply lumen independent of said working lumen wherein said catheter is of a flexibility, length, and diameter appropriate for a neurovascular microcatheter. - View Dependent Claims (52, 53, 54, 55, 56, 57, 58, 59, 60)
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61. A balloon catheter having a substantially constant diameter comprising:
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a first elongate tubular member having an outer surface, a proximal end, a distal end, a working lumen extending between said distal and proximal ends and being open at said distal end, and a radially recessed region near the distal end, and an inflatable member situated within said radially recessed region providing said substantially constant diameter and being fluid-connectable with at least one fluid supply lumen independent of said working lumen. - View Dependent Claims (62, 63, 64, 65, 66, 67, 68, 69, 70, 71, 72, 73)
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Specification