Patent GB190428528A successfully refreshed from Google Patents.
US20020077642A1
Expired / Lapsed
US
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Debulking catheter
Assignee: Covidien LP
•
Filing: 2001-12-19
•
Granted: —
•
Expires: 2021-12-19
Abstract
Abstract A debulking catheter comprising a debulking assembly for debulking a body lumen. The catheters of the present invention can include a flexible proximal portion coupled to a rigid distal portion. A tissue debulking assembly can be disposed within the rigid portion to debulk the body lumen. In exemplary embodiments, the rigid portion is rotatably coupled to the flexible portion such that rotation or deflection of the rigid portion, relative to the flexible portion, can expose the tissue debulking assembly through a window in the catheter to debulk the body lumen.
Inventors
- 👤 Himanshu Patel
- 👤 John Simpson
- 👤 Darren Doud
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 05:18
CPC Classifications
A; A61; A61B; A61B17/00; A61B17/32; A61B17/3205; A61B17/3207; A61B17/320758; A61B17/320783; A61B17/22; A61B17/22004; A61B17/22012; A61B17/2202; A61B17/320725; A61B2017/00681; A61B2017/00685; A61B17/28; A61B17/29; A61B2017/2926; A61B2017/2927; A61B17/320016; A61B17/32002; A61B2017/320032; A61B2017/320775; A61B2017/320791; A61B8/00; A61B8/12
Claims Analysis
Total Claims: 78
Claim 1
Independent Claim
66 words
1 . A catheter comprising: a flexible body comprising a proximal end and a distal end; a rigid housing rotatably coupled to the distal end of the flexible body, the housing comprising a window; and a tissue debulking assembly disposed at least partially within the rigid housing, wherein deflection of the rigid housing relative to the flexible body exposes the tissue debulking assembly through the window.
Claim 2
Dependent Claim
66 words
1 . A catheter comprising: a flexible body comprising a proximal end and a distal end; a rigid housing rotatably coupled to the distal end of the flexible body, the housing comprising a window; and a tissue debulking assembly disposed at least partially within the rigid housing, wherein deflection of the rigid housing relative to the flexible body exposes the tissue debulking assembly through the window.
Claim 3
Dependent Claim
16 words
2 . The catheter of claim 1 wherein the tissue debulking assembly comprises a rotatable cutter.
Claim 4
Dependent Claim
44 words
3 . The catheter of claim 2 wherein the housing and flexible body define a channel having a longitudinal axis, the catheter further comprising a drive shaft positioned within the channel, wherein the drive shaft is attachable to a driver for rotating the cutter.
Claim 5
Dependent Claim
44 words
4 . The catheter of claim 3 wherein the rigid housing deflects in a direction opposite of the window about an axis that is substantially orthogonal to the longitudinal axis of the flexible body so as to position the cutter adjacent a target tissue.
Claim 6
Dependent Claim
36 words
5 . The catheter of claim 1 wherein the rigid housing is coupled to the flexible body with a joint, wherein movement of the tissue debulking assembly actuates deflection of the rigid housing about the joint.
Claim 7
Dependent Claim
45 words
6 . The catheter of claim 5 further comprising a ramp positioned on the rigid housing opposite of the window, wherein proximal movement of the tissue debulking assembly over the ramp deflects the rigid housing and exposes the tissue debulking assembly out of the window.
Claim 8
Dependent Claim
34 words
7 . The catheter of claim 1 wherein the tissue debulking assembly is movably between a first position and a second position, wherein the tissue debulking assembly in the first position closes the window.
Claim 9
Dependent Claim
27 words
8 . The catheter of claim 7 wherein the movable tissue debulking assembly in the second position is positioned beyond an outer diameter of the rigid housing.
Claim 10
Dependent Claim
50 words
9 . The catheter of claim 8 wherein the tissue debulking assembly in the second proximal position moves a longitudinal axis of the debulking assembly to an angled position relative to the longitudinal axis of the rigid housing and out of the window beyond an outer diameter of the housing.
Claim 11
Dependent Claim
39 words
10 . The catheter of claim 8 wherein the tissue debulking assembly in the second position moves a longitudinal axis of the rigid housing to an offset parallel position relative to the longitudinal axis of the tissue debulking assembly.
Claim 12
Dependent Claim
33 words
11 . The catheter of claim 1 further comprising a flexible distal tip coupled to the rigid housing, wherein at least one of the distal tip and rigid housing comprise a collection chamber.
Claim 13
Dependent Claim
21 words
12 . The catheter of claim 11 wherein the flexible distal tip and flexible body comprise lumens for receiving a guidewire.
Claim 14
Dependent Claim
22 words
13 . The catheter of claim 1 wherein the tissue debulking assembly comprises a RF electrode, a laser, or an ultrasound emitter.
Claim 15
Dependent Claim
121 words
14 . A catheter for removing material out of a body lumen, the catheter comprising: a body comprising a proximal portion and a distal portion, wherein the proximal portion and distal portion each define an axis; a cutting window on the distal portion of the body; and a cutter movably disposed within at least a portion of the distal portion of the body, wherein the cutter is movable from a first position in which the cutter is aligned with the axis of the distal portion and disposed in the body, to a second position in which the cutter is at an angled or offset position relative to the axis of the distal portion of the body and exposed through the window.
Claim 16
Dependent Claim
121 words
14 . A catheter for removing material out of a body lumen, the catheter comprising: a body comprising a proximal portion and a distal portion, wherein the proximal portion and distal portion each define an axis; a cutting window on the distal portion of the body; and a cutter movably disposed within at least a portion of the distal portion of the body, wherein the cutter is movable from a first position in which the cutter is aligned with the axis of the distal portion and disposed in the body, to a second position in which the cutter is at an angled or offset position relative to the axis of the distal portion of the body and exposed through the window.
Claim 17
Dependent Claim
17 words
15 . The catheter of claim 14 wherein the second position is proximal of the first position.
Claim 18
Dependent Claim
26 words
16 . The catheter of claim 14 wherein the cutter in the second position extends beyond an outer diameter of the distal portion of the body.
Claim 19
Dependent Claim
26 words
17 . The catheter of claim 14 wherein the proximal portion of the body is flexible and the distal portion of the body is relatively rigid.
Claim 20
Dependent Claim
22 words
18 . The catheter of claim 14 wherein the cutter is rotatable and coupled to a cutter driver with a drive shaft.
Claim 21
Dependent Claim
26 words
19 . The catheter of claim 18 wherein the cutter driver comprises a single input device that controls the rotation and axial movement of the cutter.
Claim 22
Dependent Claim
19 words
20 . The catheter of claim 14 comprising a collection chamber coupled to the distal portion of the body.
Claim 23
Dependent Claim
36 words
21 . The catheter of claim 20 comprising a first lumen coupled to the collection chamber and a second lumen coupled to the body, wherein the first and second lumen are configured to receive a guidewire.
Claim 24
Dependent Claim
36 words
22 . The catheter of claim 20 wherein the cutter is movable to a third position, wherein the third position is distal of the first and second position and urges severed material into the collection chamber.
Claim 25
Dependent Claim
34 words
23 . The catheter of claim 14 comprising a ramp disposed in the distal portion of the body, wherein proximal movement of the cutter over the ramp guides the cutter to the second position.
Claim 26
Dependent Claim
111 words
24 . A catheter for removing material from a body lumen, the catheter comprising: a body comprising a proximal portion, a distal portion, an inner channel defining a longitudinal axis, and a side opening cutting window disposed on the distal portion of the body; a cam; a drive shaft positioned within the inner channel, wherein a proximal end of the drive shaft is attachable to a drive motor; and a rotatable and axially movable cutter coupled to a distal end of the drive shaft, wherein the rotatable cutter is movable over the cam to deflect the distal portion relative to the proximal portion and expose the cutter through the cutting window.
Claim 27
Dependent Claim
111 words
24 . A catheter for removing material from a body lumen, the catheter comprising: a body comprising a proximal portion, a distal portion, an inner channel defining a longitudinal axis, and a side opening cutting window disposed on the distal portion of the body; a cam; a drive shaft positioned within the inner channel, wherein a proximal end of the drive shaft is attachable to a drive motor; and a rotatable and axially movable cutter coupled to a distal end of the drive shaft, wherein the rotatable cutter is movable over the cam to deflect the distal portion relative to the proximal portion and expose the cutter through the cutting window.
Claim 28
Dependent Claim
22 words
25 . The catheter of claim 24 wherein the distal portion is pivotally coupled to the proximal portion via a pivot joint.
Claim 29
Dependent Claim
17 words
26 . The catheter of claim 25 wherein the joint is positioned proximal of the cutting window.
Claim 30
Dependent Claim
36 words
27 . The catheter of claim 25 wherein the distal portion of the housing is rotated about the joint and is urged against the body lumen when the cutter is exposed out of the cutting window.
Claim 31
Dependent Claim
30 words
28 . The catheter of claim 25 further comprising a flexible distal tip attached to the distal portion, wherein the proximal portion is flexible and the distal portion is rigid.
Claim 32
Dependent Claim
22 words
29 . The catheter of claim 28 wherein the rigid distal portion has a length between approximately 6 mm and 8 mm.
Claim 33
Dependent Claim
15 words
30 . The catheter of claim 24 wherein the cutter has a serrated cutting edge.
Claim 34
Dependent Claim
15 words
31 . The catheter of claim 24 wherein the cutter has a smooth cutting edge.
Claim 35
Dependent Claim
68 words
32 . A catheter comprising: a flexible body comprising a proximal end and a distal end; a rigid housing rotatably coupled to the distal end of the flexible body, the housing comprising a cutting window; and a debulking assembly movably disposed within the rigid housing, wherein movement of the debulking assembly from a first position to a second position rotates the rigid housing relative to the flexible body.
Claim 36
Dependent Claim
68 words
32 . A catheter comprising: a flexible body comprising a proximal end and a distal end; a rigid housing rotatably coupled to the distal end of the flexible body, the housing comprising a cutting window; and a debulking assembly movably disposed within the rigid housing, wherein movement of the debulking assembly from a first position to a second position rotates the rigid housing relative to the flexible body.
Claim 37
Dependent Claim
41 words
33 . The catheter of claim 32 further comprising a ramp in the rigid housing, wherein movement of the debulking assembly over the ramp moves the debulking assembly out of the cutting window beyond an outer diameter of the rigid housing.
Claim 38
Dependent Claim
30 words
34 . The catheter of claim 32 wherein the first position is distal to the second position, wherein the debulking assembly in the first distal position closes the cutting window.
Claim 39
Dependent Claim
45 words
35 . The catheter of claim 32 wherein the housing and flexible body define a channel, wherein the debulking assembly is a rotatable cutter, the catheter further comprising a drive shaft positioned within the channel and attachable to a drive unit for rotating the cutter.
Claim 40
Dependent Claim
26 words
36 . The catheter of claim 35 wherein the housing defines a longitudinal axis, wherein the cutter and drive shaft are rotatable about the longitudinal axis.
Claim 41
Dependent Claim
30 words
37 . The catheter of claim 36 wherein the cutter pivots about an axis that is orthogonal to the longitudinal axis when the cutter moves out of the cutting window.
Claim 42
Dependent Claim
26 words
38 . The catheter of claim 37 wherein the rigid housing comprises a flexible joint, wherein moving the cutter rotates the housing about the flexible joint.
Claim 43
Dependent Claim
56 words
39 . A method of removing material from a body lumen, the method comprising: delivering a catheter comprising a tissue debulking device to a target site in the body lumen; deflecting a distal portion of the catheter relative to a proximal portion of the catheter to expose the tissue debulking device; and debulking the body lumen.
Claim 44
Dependent Claim
56 words
39 . A method of removing material from a body lumen, the method comprising: delivering a catheter comprising a tissue debulking device to a target site in the body lumen; deflecting a distal portion of the catheter relative to a proximal portion of the catheter to expose the tissue debulking device; and debulking the body lumen.
Claim 45
Dependent Claim
32 words
40 . The method of claim 39 wherein debulking comprises: rotating the tissue debulking device about a first axis; and exposing the tissue debulking device through a cutting window in the catheter.
Claim 46
Dependent Claim
19 words
41 . The method of claim 40 wherein exposing comprises sliding the tissue debulking device against a cam surface.
Claim 47
Dependent Claim
18 words
42 . The method of claim 40 wherein the first axis is a longitudinal axis of the catheter.
Claim 48
Dependent Claim
29 words
43 . The method of claim 40 further comprising advancing the catheter in the body lumen to move the rotating tissue debulking device through material in the body lumen.
Claim 49
Dependent Claim
16 words
44 . The method of claim 39 further comprising packing severed material into a collection chamber.
Claim 50
Dependent Claim
22 words
45 . The method of claim 39 wherein deflecting comprises urging the tissue debulking device against the material in the body lumen.
Claim 51
Dependent Claim
21 words
46 . The method of claim 39 wherein delivering comprises attaching a guidewire to a monorail delivery assembly on the catheter.
Claim 52
Dependent Claim
14 words
47 . The method of claim 39 wherein the target site is a stent.
Claim 53
Dependent Claim
26 words
48 . The method of claim 39 wherein deflecting is carried out by moving the tissue debulking device from a first position to a second position.
Claim 54
Dependent Claim
68 words
49 . A method of debulking a body lumen, the method comprising: moving a tissue debulking device from a first position to an exposed second position; deflecting a distal portion of the catheter against the body lumen to position the exposed tissue debulking device in a desired position; and passing the catheter and tissue debulking device through the material in the body lumen to debulk the body lumen.
Claim 55
Dependent Claim
68 words
49 . A method of debulking a body lumen, the method comprising: moving a tissue debulking device from a first position to an exposed second position; deflecting a distal portion of the catheter against the body lumen to position the exposed tissue debulking device in a desired position; and passing the catheter and tissue debulking device through the material in the body lumen to debulk the body lumen.
Claim 56
Dependent Claim
29 words
50 . The method of claim 49 wherein an axis of the distal portion of the catheter is offset from an axis of a proximal portion of the catheter.
Claim 57
Dependent Claim
24 words
51 . The method of claim 49 wherein deflecting drops the distal portion of the catheter out of a path of the debulking device.
Claim 58
Dependent Claim
14 words
52 . The method of claim 49 further comprising rotating the tissue debulking device.
Claim 59
Dependent Claim
16 words
53 . The method of claim 49 further comprising parting off material invaginating the cutting window.
Claim 60
Dependent Claim
17 words
54 . The method of claim 49 further comprising collecting severed material in a distal collection chamber.
Claim 61
Dependent Claim
17 words
55 . The method of claim 54 further comprising packing the severed material into the collection chamber.
Claim 62
Dependent Claim
46 words
56 . The method of claim 49 wherein the catheter defines a longitudinal axis, wherein the tissue debulking device in the first position is aligned with the longitudinal axis, and the tissue debulking device in the second position is at an angle to the longitudinal axis.
Claim 63
Dependent Claim
53 words
57 . A method of debulking a body lumen, the method comprising: providing a catheter comprising a proximal portion, a distal portion, and a tissue debulking assembly; and deflecting a distal portion of the catheter against the body lumen to urge the tissue debulking assembly adjacent a target tissue in the body lumen.
Claim 64
Dependent Claim
53 words
57 . A method of debulking a body lumen, the method comprising: providing a catheter comprising a proximal portion, a distal portion, and a tissue debulking assembly; and deflecting a distal portion of the catheter against the body lumen to urge the tissue debulking assembly adjacent a target tissue in the body lumen.
Claim 65
Dependent Claim
23 words
58 . The method of claim 57 wherein deflecting comprises moving the tissue debulking assembly from a first position to a second position.
Claim 66
Dependent Claim
21 words
59 . The method of claim 57 wherein the distal portion comprises a flexible distal tip and a rigid distal housing.
Claim 67
Dependent Claim
20 words
60 . The method of claim 57 comprising rotatably coupling the proximal portion to the distal portion with a joint.
Claim 68
Dependent Claim
104 words
61 . A kit comprising: a catheter comprising a proximal portion rotatably coupled to a distal portion, wherein the distal portion includes a side-opening window and a tissue debulking device; instructions for use in removing occlusive material from a body lumen comprising moving the tissue debulking device from a first position to a second position so as to expose the tissue debulking device through the window and to rotate the distal portion relative to the proximal portion, and advancing the catheter through the body lumen to contact the tissue removal device with the occlusive material; and a package for holding the catheter and instructions.
Claim 69
Dependent Claim
104 words
61 . A kit comprising: a catheter comprising a proximal portion rotatably coupled to a distal portion, wherein the distal portion includes a side-opening window and a tissue debulking device; instructions for use in removing occlusive material from a body lumen comprising moving the tissue debulking device from a first position to a second position so as to expose the tissue debulking device through the window and to rotate the distal portion relative to the proximal portion, and advancing the catheter through the body lumen to contact the tissue removal device with the occlusive material; and a package for holding the catheter and instructions.
Claim 70
Dependent Claim
38 words
62 . A method of debulking a body lumen, the method comprising: exposing a cutter out of a cutting window of a catheter; and advancing the catheter to move the cutter through occlusive material in the body lumen.
Claim 71
Dependent Claim
38 words
62 . A method of debulking a body lumen, the method comprising: exposing a cutter out of a cutting window of a catheter; and advancing the catheter to move the cutter through occlusive material in the body lumen.
Claim 72
Dependent Claim
52 words
63 . A method of debulking a body lumen, the method comprising: moving a rotating cutter out of a side facing cutting window in a catheter; deflecting a distal portion of the catheter to urge the cutter toward a target material; and advancing the cutter through the material by moving the catheter.
Claim 73
Dependent Claim
52 words
63 . A method of debulking a body lumen, the method comprising: moving a rotating cutter out of a side facing cutting window in a catheter; deflecting a distal portion of the catheter to urge the cutter toward a target material; and advancing the cutter through the material by moving the catheter.
Claim 74
Dependent Claim
29 words
64 . The method of claim 63 wherein the catheter defines a longitudinal axis, wherein urging comprises deflecting the distal portion of the catheter off of the longitudinal axis.
Claim 75
Dependent Claim
18 words
65 . The method of claim 64 wherein moving comprises moving the cutter off of the longitudinal axis.
Claim 76
Dependent Claim
18 words
66 . The method of claim 63 wherein moving comprises pivoting the cutter out of the cutting window.
Claim 77
Dependent Claim
19 words
67 . The method of claim 63 wherein advancing comprises moving the entire catheter distally through the body lumen.
Claim 78
Dependent Claim
15 words
68 . The method of claim 63 further comprising packing material into a collection chamber.
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