US20050113853A1
Expired / Lapsed
US
⏱️ 0.0 years remaining
Guidewire for crossing occlusions or stenoses
Assignee: ReVascular Therapeutics Inc
•
Filing: 2004-09-24
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Granted: —
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Expires: 2024-09-24
Abstract
Abstract Systems and methods for crossing stenosis, partial occlusions, or complete occlusions within a body lumen. The systems generally include an elongate member such as a hollow guidewire that houses a rotatable and translatable drive shaft. The drive shaft typically has a distal portion that is advanced to create a path in the occlusive material that is large enough to allow the hollow guidewire to cross the occlusive material.
Inventors
- 👤 Gerardo Noriega
- 👤 Victor Chechelski
- 👤 Rudolfo Sudaria
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 00:40
CPC Classifications
A; A61; A61B; A61B17/00; A61B17/50; A61B17/32; A61B17/3205; A61B17/3207; A61B17/320758; A61B17/34; A61B17/3417; A61B17/3421; A61B17/22; A61B2017/22038; A61B2017/22042; A61B2017/22044; A61B2017/22051; A61B2017/22065; A61B2017/22069; A61B2017/22072; A61B2017/22074; A61B2017/22077; A61B2017/320004
Claims Analysis
Total Claims: 35
Claim 1
Independent Claim
5 words
1 - 79 . (canceled)
Claim 2
Dependent Claim
5 words
1 - 79 . (canceled)
Claim 3
Dependent Claim
82 words
80 . A method of crossing an occlusion or stenosis within a body lumen comprising: positioning a hollow guidewire into the body lumen adjacent the occlusion or stenosis; rotating a drive shaft within an inner lumen of the hollow guidewire so that a distal tip of the drive shaft extends distally beyond the hollow guidewire; and advancing the distal tip of the drive shaft into the occlusion or stenosis in the body lumen to create a path in the occlusion or stenosis.
Claim 4
Dependent Claim
82 words
80 . A method of crossing an occlusion or stenosis within a body lumen comprising: positioning a hollow guidewire into the body lumen adjacent the occlusion or stenosis; rotating a drive shaft within an inner lumen of the hollow guidewire so that a distal tip of the drive shaft extends distally beyond the hollow guidewire; and advancing the distal tip of the drive shaft into the occlusion or stenosis in the body lumen to create a path in the occlusion or stenosis.
Claim 5
Dependent Claim
25 words
81 . The method of claim 80 wherein advancing the distal tip comprises extending the drive shaft from a retracted configuration to an extended configuration.
Claim 6
Dependent Claim
16 words
82 . The method of claim 81 wherein the drive shaft is simultaneously extended and rotated.
Claim 7
Dependent Claim
16 words
83 . The method of claim 81 wherein the drive shaft is independently extended and rotated.
Claim 8
Dependent Claim
33 words
84 . The method of claim 81 wherein the drive shaft in the extended configuration creates a path at least as large as the perimeter of a distal end of the hollow guidewire.
Claim 9
Dependent Claim
22 words
85 . The method of claim 80 wherein positioning the hollow guidewire is carried out without the use of a separate guidewire.
Claim 10
Dependent Claim
26 words
86 . The method of claim 81 comprising maintaining a position of the hollow guidewire during the advancing of the distal tip of the drive shaft.
Claim 11
Dependent Claim
38 words
87 . The method of claim 80 comprising positioning a support system in the body lumen adjacent the occlusion or stenosis, wherein the hollow guidewire is sized to be received within an inner lumen of the support system.
Claim 12
Dependent Claim
48 words
88 . The method of claim 87 wherein positioning the support system comprises: advancing a guidewire through the body lumen to the occlusion or stenosis; advancing the support system over the guidewire; removing the guidewire from the body lumen; and advancing the hollow guidewire through the support system.
Claim 13
Dependent Claim
22 words
89 . The method of claim 88 comprising infusing or aspirating the body lumen through the inner lumen of the support system.
Claim 14
Dependent Claim
26 words
90 . The method of claim 88 comprising maintaining the position of the support system in the body lumen during the advancing of the distal tip.
Claim 15
Dependent Claim
43 words
91 . The method of claim 88 comprising using the support system to perform a balloon angioplasty, stent placement, ultrasound, or an atherectomy after the distal tip of the drive shaft has been advanced into the occlusion or stenosis in the body lumen.
Claim 16
Dependent Claim
22 words
92 . The method of claim 80 comprising infusing or aspirating the body lumen through the inner lumen of the hollow guidewire.
Claim 17
Dependent Claim
26 words
93 . The method of claim 92 wherein the infusing or aspirating is performed simultaneously with the creation of the path in the occlusion or stenosis.
Claim 18
Dependent Claim
30 words
94 . The method of claim 92 wherein infusing comprises delivering at least one of a therapeutic material, rinsing material, a dye, and a diagnostic material through the elongate member.
Claim 19
Dependent Claim
21 words
95 . The method of claim 80 comprising steering a distal end of the hollow guidewire by actuating a pull wire.
Claim 20
Dependent Claim
46 words
96 . A method comprising: advancing a guidewire through a body lumen; advancing a catheter over the guidewire and through the body lumen; exchanging the guidewire with a hollow guidewire that comprises a tissue removal element at or near a distal end of the hollow guidewire.
Claim 21
Dependent Claim
46 words
96 . A method comprising: advancing a guidewire through a body lumen; advancing a catheter over the guidewire and through the body lumen; exchanging the guidewire with a hollow guidewire that comprises a tissue removal element at or near a distal end of the hollow guidewire.
Claim 22
Dependent Claim
26 words
97 . The method of claim 96 comprising rotating the element and advancing the rotating element into an occlusion to create a path in the occlusion.
Claim 23
Dependent Claim
38 words
98 . The method of claim 97 wherein rotating the element comprises rotating a drive shaft that extends through an inner lumen of the hollow guidewire, wherein the element is a shaped distal tip of the drive shaft.
Claim 24
Dependent Claim
25 words
99 . The method of claim 98 wherein advancing the rotating element comprises moving the drive shaft from a retracted configuration to an extended configuration.
Claim 25
Dependent Claim
19 words
100 . The method of 98 comprising aspirating the body lumen through the inner lumen of the hollow guidewire.
Claim 26
Dependent Claim
19 words
100 . The method of 98 comprising aspirating the body lumen through the inner lumen of the hollow guidewire.
Claim 27
Dependent Claim
20 words
101 . The method of claim 98 comprising infusing the body lumen through the inner lumen of the hollow guidewire.
Claim 28
Dependent Claim
16 words
102 . The method of claim 97 wherein rotating the element comprises reciprocating the drive shaft.
Claim 29
Dependent Claim
16 words
103 . The method of claim 96 comprising steering a distal end of the hollow guidewire.
Claim 30
Dependent Claim
23 words
104 . The method of claim 101 wherein steering the distal end of the hollow guidewire comprises actuating one or more pull wires.
Claim 31
Dependent Claim
85 words
105 . A steerable, hollow guidewire comprising: an elongate hollow guidewire body comprising an inner lumen; means for creating a path through an occlusion in a body lumen, the means positioned at or near a distal end of the elongated hollow guidewire body and extending through the inner lumen; and one or more pull wires coupled to a distal end of the elongate hollow guidewire body, wherein actuation of the one or more pull wires deflects the distal end of the elongate hollow guidewire body.
Claim 32
Dependent Claim
85 words
105 . A steerable, hollow guidewire comprising: an elongate hollow guidewire body comprising an inner lumen; means for creating a path through an occlusion in a body lumen, the means positioned at or near a distal end of the elongated hollow guidewire body and extending through the inner lumen; and one or more pull wires coupled to a distal end of the elongate hollow guidewire body, wherein actuation of the one or more pull wires deflects the distal end of the elongate hollow guidewire body.
Claim 33
Dependent Claim
18 words
106 . The steerable, hollow guidewire of claim 105 wherein the elongate hollow guidewire comprises a coil body.
Claim 34
Dependent Claim
26 words
107 . The steerable, hollow guidewire of claim 105 wherein the elongate hollow guidewire comprises an outer diameter between about 0.009 inches and about 0.040 inches.
Claim 35
Dependent Claim
26 words
108 . The steerable, hollow guidewire of claim 105 comprises a housing that is removably coupled to a proximal end of the elongate hollow guidewire body.
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