Intraluminal cutter for vascular, biliary and other applications

• US 6,796,989 B2
• Filed: 05/06/2002
• Issued: 09/28/2004
• Est. Priority Date: 05/06/2002
• Status: Expired due to Fees

• Current Assignee: Renan Uflacker
• Original Assignee: Renan Uflacker
• Inventors: Uflacker, Renan
• Primary Examiner(s): Bui, Vy
• Assistant Examiner(s): Sam, Charles H.
• Application Number:
  US10/139,670
• Publication Number:
  US 20030208215A1
• Time in Patent Office: 876 Days
• Field of Search: 604/22, 604/156, 604/158, 606/159, 606/167
• US Class Current: 606/159
• CPC Class Codes: A61B 17/320725 with radially expandable cutting or abrading elements A61B17/32075 takes precedence
• CPC Class Codes: A61B 17/320758 with a rotating cutting instrument, e.g. motor driven A61B17/320725, A61B17/32075 and A61B17/320783 take precedence; for removing intra-ocular material A61F9/00763; endoscopic rotatable cutting instruments A61B17/32002
• CPC Class Codes: A61F 2/82 Devices providing patency to, or preventing collapsing of, tubular structures of the body, e.g. stents stent-grafts for tubular structures of the body other than blood vessels A61F2/04; stent-grafts for blood vessels A61F2/07; instruments specially adapted for placement or removal of stents or stent-grafts A61F2/95; for closing wounds, or holding wounds closed A61B17/04 - A61B17/115; dilators A61M29/00

Abstract

An intraluminal cutter having an expandable, rotary cutter with a plurality of cutting blades designed to cut and remove tissue proliferation within a stent and also to reopen stents. The intraluminal cutter is placed within the lumen of the clogged stent and expanded. By rotary movement of the expanded cutter blades, the device cuts and removes the material within the lumen. It is emphasized that this abstract is provided to comply with the rules requiring an abstract that will allow a searcher or other reader to quickly ascertain the subject matter of the technical disclosure. It is submitted with the understanding that it will not be used to limit the scope or meaning of the claims. 37 C.F.R. 1.72(b).

Claims

1. An intraluminal cutting system, comprising:

a guide wire;

a first tubular member having a longitudinal axis, a distal end, and a proximal end, the tubular member having an axially disposed opening sized to receive the guide wire;

a plurality of resilient blades having a first end and a second end, the first end connected to the distal end of the first tubular member;

a retaining collar attached to the second end of the blades;

a second tubular member having a proximal end and a distal end, the distal end being attached to the retaining collar; and

,

an external control device having a handle including a first portion and a second portion, the first portion connected to the proximal end of the first tubular member, the second portion connected to the proximal end of the second tubular member, the second portion capable of being moved axially relative to the first portion to deploy the blades;

wherein the first portion comprises a shaft having a groove defined therein, the groove oriented substantially perpendicular to the longitudinal axis, the second portion having a bore with an inner wall having a notch thereon, the notch disposed such that rotation of the second portion in a first direction causes the notch to rotate into a first position where it is prevented from moving in the axial direction by a ledge bordering the notch and such that further rotation in the first direction causes the first and second portion to rotate in unison, the notch disposed such that rotation of the second portion in a second direction opposite the first direction causes the notch to move out of the groove such that the second portion is capable of axial movement relative to the first portion.

2. The cutting system of claim 1, further comprising a basket for trapping particles released by the blades, the basket deployed over the guide wire and positioned downstream from the distal end of the first tubular member.

3. A method for cutting ingrowth from a stent, comprising:

providing a guide wire, a tubular member having a longitudinal axis, a distal end, and a proximal end, the tubular member having an axially disposed opening sized to receive the guide wire, a plurality of resilient blades having a first end and a second end, the first end connected to the distal end of the tubular member, a retaining collar attached to the second end of the blades, a second tubular member having a proximal end and a distal end, the distal end being attached to the retaining collar;

an external control device having a handle including a first portion and a second portion, the first portion connected to the proximal end of the tubular member, the second portion connected to the proximal end of the second tubular member, the second portion capable of being moved axially relative to the first portion to deploy the blades, wherein the first portion comprises a shaft having a groove defined therein, the groove oriented substantially perpendicular to the longitudinal axis, the second portion having a bore with an inner wall having a notch thereon, the notch disposed such that rotation of the second portion in a first direction causes the notch to rotate into a first position where it is prevented from moving in the axial direction by a ledge bordering the notch and such that further rotation in the first direction causes the first and second portion to rotate in unison, the notch disposed such that rotation of the second portion in a second direction opposite the first direction causes the notch to move out of the groove such that the second portion is capable of axial movement relative to the first portion;

deploying the guide wire through the vasculature to the target lumen;

deploying the cutting system over the guide wire to the target lumen;

opening the cutting system by rotating the second portion relative to the first portion to cause the blades to expand in the radial direction; and

,

rotating the handle so that the blades rotate inside the target lumen such that the ingrowth is trimmed from inside the lumen.

4. The method of claim 3, further comprising deploying a basket over the guide wire in spaced apart relation to the distal end of the first tubular member.

5. The method of claim 3, wherein the target lumen is a TIPS shunt.

6. The method of claim 3, wherein the target lumen is a biliary stent.