US20080004647A1
Active / In Force
US
⏱️ 0.1 years remaining
Atherectomy devices and methods
Assignee: AtheroMed Inc
•
Filing: 2006-12-06
•
Granted: —
•
Expires: 2026-12-06
Abstract
Abstract The devices and methods generally relate to treatment of occluded body lumens. In particular, the present devices and method relate to removal of the occluding material from the blood vessels as well as other body lumens.
Inventors
- 👤 John To
- 👤 Christopher James Danek
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 00:41
CPC Classifications
A; A61; A61B; A61B17/00; A61B17/32; A61B17/3205; A61B17/3207; A61B17/320758; A61B17/22; A61B17/320783; A61B17/00234; A61B2017/00292; A61B2017/003; A61B2017/00318; A61B2017/00331; A61B2017/00681; A61B2017/00685; A61B2017/22038; A61B2017/22039; A61B2017/22041; A61B2017/22042; A61B2017/22044; A61B2017/22051; A61B2017/22065; A61B2017/22068; A61B2017/22079; A61B2017/22094; A61B2017/320716; A61B2017/320733; A61B2017/320741; A61B2017/320775; A61B90/00; A61B90/36; A61B90/37; A61B2090/373; A61B2090/3735; A61B2090/378; A61B2090/3782; A61B2090/3784; A61M; A61M25/00; A61M25/01; A61M25/0105; A61M25/0133; A61M25/0152; A61M25/0155
Claims Analysis
Total Claims: 44
Claim 1
Independent Claim
80 words
1 . A method for non-invasively imaging a vessel, the method comprising: advancing a device having a first lumen and a second lumen; delivering a contrast agent through the first lumen of the device into the vessel at a location adjacent to an occlusion in the vessel, where the occlusion prevents flow of the contrast agent distally to the occlusion; aspirating the contrast agent from the vessel through the second lumen; and non-invasively imaging the contrast agent in the vessel.
Claim 2
Dependent Claim
80 words
1 . A method for non-invasively imaging a vessel, the method comprising: advancing a device having a first lumen and a second lumen; delivering a contrast agent through the first lumen of the device into the vessel at a location adjacent to an occlusion in the vessel, where the occlusion prevents flow of the contrast agent distally to the occlusion; aspirating the contrast agent from the vessel through the second lumen; and non-invasively imaging the contrast agent in the vessel.
Claim 3
Dependent Claim
15 words
2 . The method of claim 1 , where the occlusion comprises a total occlusion.
Claim 4
Dependent Claim
18 words
3 . The method of claim 1 , further creating a passage through the occlusion with the device.
Claim 5
Dependent Claim
84 words
4 . The method of claim 3 , where the device further includes a cutter assembly located at the distal end of the device, the cutter assembly comprising a housing having at least one opening and a cutter having at least one cutting surface configured to rotate relative to the housing, where movement between the housing opening and the cutting surface removes material located therebetween; and where creating the passage comprises rotating the cutter assembly such that the cutter removes portions of the occlusion.
Claim 6
Dependent Claim
27 words
5 . The method of claim 3 , where the device further includes a coring cutter, and where the coring cutter creates the passage through the occlusion.
Claim 7
Dependent Claim
16 words
6 . The method of claim 1 , further comprising passing a guidewire through the occlusion.
Claim 8
Dependent Claim
40 words
7 . The method of claim 1 , where the device further includes a cutter assembly located at the distal end of the device, further comprising sweeping the cutter assembly in an expanded profile to remove portions of the occlusion.
Claim 9
Dependent Claim
18 words
8 . The method of claim 1 , further comprising conveying debris from the occlusion through the device.
Claim 10
Dependent Claim
34 words
9 . The method of claim 8 , where the device further comprises at least one helical conveyor member extending therethrough such that that rotation conveyor member causes debris to move through the device.
Claim 11
Dependent Claim
42 words
10 . The method of claim 1 , where the device further comprises a burr rotatably located on a tip of the device, and where the occlusion comprises a fibrous cap, the method further comprising rotating the burr against the fibrous cap.
Claim 12
Dependent Claim
69 words
11 . A method for circulating a contrast agent in a vessel proximal to a site of a total occlusion, the method comprising: advancing a device to the site, where the total occlusion prevents fluid flow distally through the vessel; delivering the contrast agent to the site through the device; aspirating the contrast agent from the site through the device; and non-invasively imaging the contrast agent in the vessel.
Claim 13
Dependent Claim
69 words
11 . A method for circulating a contrast agent in a vessel proximal to a site of a total occlusion, the method comprising: advancing a device to the site, where the total occlusion prevents fluid flow distally through the vessel; delivering the contrast agent to the site through the device; aspirating the contrast agent from the site through the device; and non-invasively imaging the contrast agent in the vessel.
Claim 14
Dependent Claim
32 words
12 . The method of claim 11 , where the device comprises at least two lumens, where a first lumen delivers the contrast agent, and the second lumen aspirates the contrast agent.
Claim 15
Dependent Claim
33 words
13 . The method of claim 11 , creating a passage through the occlusion with the device until the non-invasive imaging shows the contrast agent to pass through the site of the occlusion.
Claim 16
Dependent Claim
84 words
14 . The method of claim 13 , where the device further includes a cutter assembly located at the distal end of the device, the cutter assembly comprising a housing having at least one opening and a cutter having at least one cutting surface configured to rotate relative to the housing, where movement between the housing opening and the cutting surface removes material located therebetween; and where creating the passage comprises rotating the cutter assembly such that the cutter removes portions of the occlusion.
Claim 17
Dependent Claim
27 words
15 . The method of claim 13 , where the device further includes a coring cutter, and where the coring cutter creates the passage through the occlusion.
Claim 18
Dependent Claim
16 words
16 . The method of claim 11 , further comprising passing a guidewire through the occlusion.
Claim 19
Dependent Claim
40 words
17 . The method of claim 11 , where the device further includes a cutter assembly located at the distal end of the device, further comprising sweeping the cutter assembly in an expanded profile to remove portions of the occlusion.
Claim 20
Dependent Claim
18 words
18 . The method of claim 11 , further comprising conveying debris from the occlusion through the device.
Claim 21
Dependent Claim
34 words
19 . The method of claim 18 , where the device further comprises at least one helical conveyor member extending therethrough such that that rotation conveyor member causes debris to move through the device.
Claim 22
Dependent Claim
42 words
20 . The method of claim 11 , where the device further comprises a burr rotatably located on a tip of the device, and where the occlusion comprises a fibrous cap, the method further comprising rotating the burr against the fibrous cap.
Claim 23
Dependent Claim
85 words
21 . A method for circulating fluid for contrast, the method comprising: inserting a support catheter within the blood vessel, where the support catheter comprises a support catheter body having a proximal end and a distal end, the distal end containing at least one port on the surface for injection or aspiration of fluid; injecting the fluid for contrast through a lumen or port in the support catheter body; and aspirating the fluid for contrast into a lumen or port in the support catheter body.
Claim 24
Dependent Claim
85 words
21 . A method for circulating fluid for contrast, the method comprising: inserting a support catheter within the blood vessel, where the support catheter comprises a support catheter body having a proximal end and a distal end, the distal end containing at least one port on the surface for injection or aspiration of fluid; injecting the fluid for contrast through a lumen or port in the support catheter body; and aspirating the fluid for contrast into a lumen or port in the support catheter body.
Claim 25
Dependent Claim
28 words
22 . The method of claim 21 , where the support catheter is centered within the blood vessel using at least one basket or at least one balloon.
Claim 26
Dependent Claim
70 words
23 . The method of claim 21 , further comprising: inserting a catheter body having a coring cutter assembly within the blood vessel; driving the coring cutter assembly through the tough fibrous cap in the vessel to form a first body opening in the vessel; removing the coring cutter assembly from the body; inserting a second cutter assembly with a guidewire, where the guidewire is inserted through the first opening.
Claim 27
Dependent Claim
22 words
24 . The method of claim 23 , where the coring cutter assembly contains a shoulder that rests upon the support catheter.
Claim 28
Dependent Claim
26 words
25 . The method of 23 , where the coring cutter assembly comprises a helical groove or cylinder to drive itself through the tough fibrous cap.
Claim 29
Dependent Claim
26 words
25 . The method of 23 , where the coring cutter assembly comprises a helical groove or cylinder to drive itself through the tough fibrous cap.
Claim 30
Dependent Claim
21 words
26 . The method of claim 23 , where the coring cutter collects the cored-out portion of the tough fibrous cap.
Claim 31
Dependent Claim
61 words
27 . A method for clearing a total occlusion from a vessel, the method comprising: advancing a support catheter the vessel and adjacent to the occlusion, centering the support catheter the vessel and adjacent to the occlusion; advancing a lumen creating device within the support catheter to the occlusion; and creating a passage in the occlusion with the lumen creating device.
Claim 32
Dependent Claim
61 words
27 . A method for clearing a total occlusion from a vessel, the method comprising: advancing a support catheter the vessel and adjacent to the occlusion, centering the support catheter the vessel and adjacent to the occlusion; advancing a lumen creating device within the support catheter to the occlusion; and creating a passage in the occlusion with the lumen creating device.
Claim 33
Dependent Claim
30 words
28 . The method of claim 27 , further comprising circulating a contrast agent adjacent on a single side of the occlusion to visualize the vessel adjacent to the occlusion.
Claim 34
Dependent Claim
37 words
29 . The method of claim 28 , where circulating the contrast agent comprises injecting the contrast agent to the vessel through the support catheter and aspirating the contrast agent from the vessel through the support catheter.
Claim 35
Dependent Claim
39 words
30 . The method of claim 28 , where circulating the contrast agent comprises injecting the contrast agent to the vessel through the lumen creating device and aspirating the contrast agent from the vessel through the lumen creating device.
Claim 36
Dependent Claim
33 words
31 . The method of claim 27 , where the lumen creating device is selected from the group consisting of a cutting device, a laser catheter, an RF probe, and an RF guidewire.
Claim 37
Dependent Claim
18 words
32 . The method of claim 27 , where the lumen creating device comprises a coring cutting device.
Claim 38
Dependent Claim
32 words
33 . The method of claim 27 , where the lumen creating device further comprises a shoulder to limit the degree of which the lumen creating device extends from the support catheter.
Claim 39
Dependent Claim
87 words
34 . The method of claim 27 , where the lumen creating device device further includes a cutter assembly located at the distal end of the device, the cutter assembly comprising a housing having at least one opening and a cutter having at least one cutting surface configured to rotate relative to the housing, where movement between the housing opening and the cutting surface removes material located therebetween; and where creating the passage comprises rotating the cutter assembly such that the cutter removes portions of the occlusion.
Claim 40
Dependent Claim
16 words
35 . The method of claim 27 , further comprising passing a guidewire through the passage.
Claim 41
Dependent Claim
20 words
36 . The method of claim 27 , further comprising conveying debris from the occlusion through the lumen creating device.
Claim 42
Dependent Claim
34 words
37 . The method of claim 36 , where the device further comprises at least one helical conveyor member extending therethrough such that that rotation conveyor member causes debris to move through the device.
Claim 43
Dependent Claim
44 words
38 . The method of claim 27 , where the lumen creating device further comprises a burr rotatably located on a tip of the lumen creating device, and where the occlusion comprises a cap, the method further comprising rotating the burr against the cap.
Claim 44
Dependent Claim
19 words
39 . The method of claim 27 , where the cap is a fibrous cap or a calcific cap.
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