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US20110040315A1 Active / In Force US ⏱️ 4.0 years remaining

Devices, systems, and methods for cutting and removing occlusive material from a body lumen

Assignee: AtheroMed Inc
•
Filing: 2010-10-22
•
Granted: —
•
Expires: 2030-10-22
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Abstract

Abstract A vascular device is provided having a catheter body and a rotatable cutter assembly located at the distal end of the catheter body. The cutter assembly has at least one helical cutting surface within a housing that is coupled by a torque shaft to a drive mechanism. A conveyor mechanism helically wound about the torque shaft conveys occlusive material conveyed into the housing by the helical cutting blade further proximally along the catheter body for discharge without supplement of a vacuum pump. The catheter body is manipulated to insert the distal end of the catheter body within a body lumen and advance the distal end of the catheter body toward the occlusive material. The drive mechanism is operated to rotate the helical cutting surface to cut and convey the occlusive material from the body lumen proximally into the housing and to convey the occlusive material conveyed into the housing by the helical cutting surface further proximally along the catheter body by the conveyor mechanism for discharge without supplement of a vacuum pump. The distal end of the catheter body is deflected and rotated to sweep the cutter assembly in an arc about the center axis of the catheter body to cut occlusive material in a region larger than the outside diameter of the cutter assembly.

Inventors

  • 👤 John To
  • 👤 Christopher James Danek

Bibliographic Details

Application Number —
Jurisdiction US
Data Source google_patents
Last Synchronized 2026-10-23 00:45
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: 7
Claim 1
Independent Claim 413 words
1 . A method for cutting and removing occlusive material from a body lumen, the method comprising: providing a vascular device comprising a catheter body sized and configured for advancement in the body lumen, the catheter body having a center axis and including spaced apart proximal and distal ends, a cutter assembly having an outside diameter located at the distal end of the catheter body, the cutter assembly comprising a housing having at least one opening and a cutter having at least one helical cutting surface configured to rotate about the central axis relative to the housing to cut and convey the occlusive material from the body lumen proximally into the housing, a drive mechanism at the proximal end of the catheter body, a torque shaft coupled to the drive mechanism and extending through the catheter body and coupled to the cutter to rotate the helical cutting blade about the center axis relative to the housing, a conveyor mechanism helically wound about the torque shaft in a direction common with the helical cutting blade to convey the occlusive material conveyed into the housing by the helical cutting blade further proximally along the catheter body for discharge without supplement of a vacuum pump, and a deflecting mechanism at the proximal end of the catheter body for deflecting the distal end of the catheter body relative to the center axis of the catheter body, manipulating the proximal end of the catheter body to insert the distal end of the catheter body within the body lumen, manipulating the proximal end of the catheter body to advance the distal end of the catheter body within the body lumen toward the occlusive material, operating the drive mechanism to rotate the helical cutting surface about the central axis to cut and convey the occlusive material from the body lumen proximally into the housing and to convey the occlusive material conveyed into the housing by the helical cutting surface further proximally along the catheter body by the conveyor mechanism for discharge without supplement of a vacuum pump, operating the deflecting mechanism at the proximal end of the catheter body to deflect the distal end of the catheter body relative to the center axis of the catheter body, and rotating the distal end of the catheter body when the distal end is deflected to sweep the cutter assembly in an arc about the center axis to cut occlusive material in a region larger than the outside diameter of the cutter assembly.
Claim 2
Dependent Claim 413 words
1 . A method for cutting and removing occlusive material from a body lumen, the method comprising: providing a vascular device comprising a catheter body sized and configured for advancement in the body lumen, the catheter body having a center axis and including spaced apart proximal and distal ends, a cutter assembly having an outside diameter located at the distal end of the catheter body, the cutter assembly comprising a housing having at least one opening and a cutter having at least one helical cutting surface configured to rotate about the central axis relative to the housing to cut and convey the occlusive material from the body lumen proximally into the housing, a drive mechanism at the proximal end of the catheter body, a torque shaft coupled to the drive mechanism and extending through the catheter body and coupled to the cutter to rotate the helical cutting blade about the center axis relative to the housing, a conveyor mechanism helically wound about the torque shaft in a direction common with the helical cutting blade to convey the occlusive material conveyed into the housing by the helical cutting blade further proximally along the catheter body for discharge without supplement of a vacuum pump, and a deflecting mechanism at the proximal end of the catheter body for deflecting the distal end of the catheter body relative to the center axis of the catheter body, manipulating the proximal end of the catheter body to insert the distal end of the catheter body within the body lumen, manipulating the proximal end of the catheter body to advance the distal end of the catheter body within the body lumen toward the occlusive material, operating the drive mechanism to rotate the helical cutting surface about the central axis to cut and convey the occlusive material from the body lumen proximally into the housing and to convey the occlusive material conveyed into the housing by the helical cutting surface further proximally along the catheter body by the conveyor mechanism for discharge without supplement of a vacuum pump, operating the deflecting mechanism at the proximal end of the catheter body to deflect the distal end of the catheter body relative to the center axis of the catheter body, and rotating the distal end of the catheter body when the distal end is deflected to sweep the cutter assembly in an arc about the center axis to cut occlusive material in a region larger than the outside diameter of the cutter assembly.
Claim 3
Dependent Claim 50 words
2 . A method according to claim 1 wherein manipulating the proximal end of the catheter body to advance the distal end of the catheter body within the body lumen toward the occlusive material includes advancing the distal end of the catheter body within a body lumen having a bifurcation.
Claim 4
Dependent Claim 48 words
3 . A method according to claim 1 wherein manipulating the proximal end of the catheter body to advance the distal end of the catheter body within the body lumen toward the occlusive material includes advancing the distal end of the catheter body within a tortuous body lumen.
Claim 5
Dependent Claim 51 words
4 . A method according to claim 1 wherein manipulating the proximal end of the catheter body to advance the distal end of the catheter body within the body lumen toward the occlusive material includes advancing the distal end of the catheter body within a body lumen subject to biomechanical stresses.
Claim 6
Dependent Claim 44 words
5 . A method according to claim 1 wherein operating the drive mechanism to rotate the helical cutting blade about the central axis to cut and convey the occlusive material from the body lumen includes restoring patency to a lesion in the body lumen.
Claim 7
Dependent Claim 42 words
6 . A method according to claim 1 wherein operating the drive mechanism to rotate the helical cutting blade about the central axis to cut and convey the occlusive material from the body lumen comprises debulking a lesion in the body lumen.

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