US20030018346A1
Expired / Lapsed
US
⏱️ 0.0 years remaining
Apparatus and methods for removing material from a body lumen
Assignee: Fox Hollow Technologies Inc
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Filing: 2002-09-16
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Granted: —
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Expires: 2022-09-16
Abstract
Abstract Devices, methods, and kits for removing material from a body lumen. The devices and methods may be used in a variety of body lumens, including but not limited to coronary arteries and other blood vessels. In general, the device or catheter has a scoop-shaped cutting blade mounted on a catheter body for removing material from a body lumen. The cutting blade has a cutting edge that travels a curved path about a pivot point of the blade, preferably moving in an outward direction from the catheter body to engage the target material for removal. The scoop-shaped blade has a collection surface located behind the cutting edge to collect material removed from said body lumen. Advantageously, a scoop-shaped cutting blade according to the present invention facilitates material engagement and the collection surface may be used to bring material back into the catheter body as the blade begins to part-off material. The cutting blade is usually mounted to move in an inward direction towards the catheter body after the cutting edge has engaged the material. The cutting blade can also more easily engage occlusive material that is compressed against the body lumen wall.
Inventors
- 👤 Brett Follmer
- 👤 Stephen Boyd
- 👤 Eric Willis
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-22 23:06
CPC Classifications
A; A61; A61B; A61B10/00; A61B10/02; A61B10/06; A61B17/00; A61B17/32; A61B17/3205; A61B17/3207; A61B17/32075; A61B17/320783; A61B17/00234; A61B2017/00292; A61B2017/003; A61B2017/320791
Claims Analysis
Total Claims: 35
Claim 1
Independent Claim
90 words
1 . A catheter for removing material from a body lumen, said catheter comprising: a catheter body having a proximal end and a distal end; and a scoop-shaped cutting blade mounted on the catheter body, said cutting blade having a cutting edge and a material collection surface; wherein said cutting is configured to travel along a curved path about a pivot point of said cutting blade and wherein said material collection surface is located behind said cutting edge to urge material removed from said body lumen towards the catheter body.
Claim 2
Dependent Claim
90 words
1 . A catheter for removing material from a body lumen, said catheter comprising: a catheter body having a proximal end and a distal end; and a scoop-shaped cutting blade mounted on the catheter body, said cutting blade having a cutting edge and a material collection surface; wherein said cutting is configured to travel along a curved path about a pivot point of said cutting blade and wherein said material collection surface is located behind said cutting edge to urge material removed from said body lumen towards the catheter body.
Claim 3
Dependent Claim
34 words
2 . A catheter as in claim 1 wherein said cutting edge is mounted to move along a portion of said path in an outward direction from the catheter body to engage said material.
Claim 4
Dependent Claim
36 words
3 . A catheter as in claim 1 wherein said cutting edge of the cutting blade is mounted to move in an inward direction towards said catheter body after said cutting edge has engaged said material.
Claim 5
Dependent Claim
17 words
4 . A catheter as in claim 1 wherein said material collection surface comprises a concave surface.
Claim 6
Dependent Claim
28 words
5 . A catheter as in claim 1 wherein said cutting blade comprises a sphere having an opening wherein an edge of the opening defines the cutting edge.
Claim 7
Dependent Claim
28 words
6 . A catheter as in claim 1 wherein said cutting blade is mounted on said catheter body to reciprocate along a longitudinal path on said catheter body.
Claim 8
Dependent Claim
40 words
7 . A catheter as in claim 6 wherein said cutting blade use a guide for defining said longitudinal path, said guide selected from the group consisting of a slotted track, a rail, or a ramp on said catheter body.
Claim 9
Dependent Claim
46 words
8 . A catheter as in claim 6 wherein said cutting blade is mounted to reciprocate along said longitudinal path between a first position placing said cutting edge outside of said catheter body and a second position placing said cutting edge substantially within said catheter body.
Claim 10
Dependent Claim
32 words
9 . A catheter as in claim 1 wherein said cutting blade is mounted on said catheter body to rotate about an axis perpendicular to a longitudinal axis of said catheter body.
Claim 11
Dependent Claim
33 words
10 . A catheter as in claim 1 wherein said cutting blade includes a material engaging member mounted on said cutting blade to engage said material before said cutting edge contacts said material.
Claim 12
Dependent Claim
34 words
11 . A catheter as in claim 1 wherein said cutting blade includes at least one penetrating point mounted on said cutting blade to engage said material before said cutting edge contacts said material.
Claim 13
Dependent Claim
31 words
12 . A catheter as in claim 1 further comprising a second cutter mounted on said catheter body to assist said cutting edge of the cutting blade in parting-off of material.
Claim 14
Dependent Claim
25 words
13 . A catheter as in claim 1 further comprising an actuator within said catheter body to move the cutting blade along said curved path.
Claim 15
Dependent Claim
19 words
14 . A catheter as in claim 13 wherein said actuator comprises a pullwire coupled to said cutting blade.
Claim 16
Dependent Claim
28 words
15 . A catheter as in claim 1 wherein said catheter body comprises a catheter wall with an opening from which said cutting blade extends to engage material.
Claim 17
Dependent Claim
27 words
16 . A catheter as in claim 1 wherein said catheter body has a distal, forward facing opening from which said cutting blade extends to engage material.
Claim 18
Dependent Claim
27 words
17 . A catheter as in claim 1 wherein the catheter body comprises an atraumatic, tapered distal end with a forward facing opening at said distal end.
Claim 19
Dependent Claim
20 words
18 . A catheter as in claim 1 wherein said catheter body has a shaft adaptor at said proximal end.
Claim 20
Dependent Claim
24 words
19 . A catheter as in claim 1 wherein said catheter body comprises a cutting mechanism, said cutting blade mounted on said cutting mechanism.
Claim 21
Dependent Claim
45 words
20 . An atherectomy catheter comprising: a catheter body having a proximal end and a distal end; a cutting mechanism mounted on said distal end of the catheter body; and cutting means rotatably mounted on said cutting mechanism for removing material from a body lumen.
Claim 22
Dependent Claim
45 words
20 . An atherectomy catheter comprising: a catheter body having a proximal end and a distal end; a cutting mechanism mounted on said distal end of the catheter body; and cutting means rotatably mounted on said cutting mechanism for removing material from a body lumen.
Claim 23
Dependent Claim
36 words
21 . A catheter as in claim 20 wherein said cutting means comprises a scoop-shaped cutting blade having a cutting edge mounted to move along a curved path about a pivot point of said cutting blade.
Claim 24
Dependent Claim
25 words
22 . A catheter as in claim 21 wherein said cutting blade includes a collection surface located behind said cutting edge in the cutting direction.
Claim 25
Dependent Claim
31 words
23 . A catheter as in claim 21 wherein said cutting blade is mounted to move in an outward direction from the catheter body for a portion of said curved path.
Claim 26
Dependent Claim
73 words
24 . A method for removing material from a body lumen, the method comprising: positioning a catheter body having a scoop-shaped cutting blade adjacent to said target material in the body lumen, said cutting blade having a cutting edge and a material collection surface; and rotating said cutting blade about a pivot point to engage and cut said target material while urging the material into the catheter body with said material collection surface.
Claim 27
Dependent Claim
73 words
24 . A method for removing material from a body lumen, the method comprising: positioning a catheter body having a scoop-shaped cutting blade adjacent to said target material in the body lumen, said cutting blade having a cutting edge and a material collection surface; and rotating said cutting blade about a pivot point to engage and cut said target material while urging the material into the catheter body with said material collection surface.
Claim 28
Dependent Claim
25 words
25 . A method as in claim 24 further comprising reciprocating said cutting blade along a longitudinal path on said catheter body to remove material.
Claim 29
Dependent Claim
27 words
26 . A method as in claim 25 wherein said reciprocating of said cutting blade along said longitudinal path occurs while said cutting blade is being rotated.
Claim 30
Dependent Claim
43 words
27 . A method as in claim 25 wherein said longitudinal moving step reciprocates the cutting blade between a first position where the cutting edge is outside the catheter body and a second position wherein the cutting edge is within the catheter body.
Claim 31
Dependent Claim
27 words
28 . A method as in claim 25 further comprising piercing said material with a penetrating member in advance of engaging the material with said cutting edge.
Claim 32
Dependent Claim
29 words
29 . A method as in claim 25 wherein said rotating of the cutting blade brings the cutting edge adjacent to a second cutting edge of a second cutter.
Claim 33
Dependent Claim
18 words
30 . A method as in claim 29 wherein said second cutter is mounted on said catheter body.
Claim 34
Dependent Claim
87 words
31 . A kit comprising: a catheter having a scoop-shaped cutting blade; instructions for use in removing material from a body lumen comprising positioning said catheter adjacent to said material in the body lumen, said cutting blade having a cutting edge and a material collection surface, and rotating said cutting blade about a pivot point to engage and cut said material while urging the material into the catheter body with said material collection surface; and a package adapted to contain the device and the instructions for use.
Claim 35
Dependent Claim
87 words
31 . A kit comprising: a catheter having a scoop-shaped cutting blade; instructions for use in removing material from a body lumen comprising positioning said catheter adjacent to said material in the body lumen, said cutting blade having a cutting edge and a material collection surface, and rotating said cutting blade about a pivot point to engage and cut said material while urging the material into the catheter body with said material collection surface; and a package adapted to contain the device and the instructions for use.
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