Rotational thrombectomy wire

• US 8,764,779 B2
• Filed: 11/23/2011
• Issued: 07/01/2014
• Est. Priority Date: 05/13/2010
• Status: Active Grant

• Current Assignee: REX Medical LP
• Original Assignee: REX Medical LP
• Inventors: Levine, Marc-Alan, Leedle, Michael
• Primary Examiner(s): SEVERSON, RYAN J
• Application Number:
  US13/303,339
• Publication Number:
  US 20120116429A1
• Time in Patent Office: 951 Days
• Field of Search: 606110-115, 606/127, 606/128, 606/159, 606/170, 606/180
• US Class Current: 606/159
• 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: A61B 2017/00778 Operations on blood vessels A61B2017/22097, A61B2017/320741 take precedence
• CPC Class Codes: A61B 2017/22038 with a guide wire
• CPC Class Codes: A61B 2017/22094 for crossing total occlusions, i.e. piercing
• CPC Class Codes: A61B 2017/320008 Scrapers
• CPC Class Codes: A61B 2017/320733 with a flexible cutting or scraping element, e.g. with a whip-like distal filament member
• CPC Class Codes: A61B 2017/320766 eccentric
• CPC Class Codes: A61M 2025/0681 Systems with catheter and outer tubing, e.g. sheath, sleeve or guide tube
• CPC Class Codes: A61M 25/0097 characterised by the hub connectors A61M39/10

Abstract

A rotational thrombectomy wire for breaking up vascular thrombus or other obstructive material having a core having a proximal region and a distal region and being rotatable by a motor. The distal region has a smaller diameter than the proximal region. A cable is coupled to the distal region of the core and extends distally thereof. A torque tube is positioned over the cable and a coil is positioned over a distal portion of the cable. A distal portion of the cable has a non-linear configuration. A first covering material is positioned over the coil.

Claims

1. A rotational thrombectomy wire for breaking up vascular thrombus or other obstructive material, the thrombectomy wire comprising a core having a proximal region and a distal region and being rotatable by a motor, the distal region having a smaller diameter than the proximal region, a cable coupled to the distal region of the core and extending distally thereof, a torque tube positioned over the cable, a coil positioned over a distal portion of the cable, the distal portion of the cable has a non-linear configuration, and a first covering material positioned over the coil, wherein a second covering material covers the torque tube.

2. The thrombectomy wire of claim 1, further comprising a heat shrink material covering the first covering material.

3. The thrombectomy wire of claim 1, wherein the non-linear distal portion of the cable is sinuous in configuration.

4. A rotational thrombectomy wire for breaking up vascular thrombus or other obstructive material, the thrombectomy wire comprising a core having a proximal region and a distal region and being rotatable by a motor, the distal region having a smaller diameter than the proximal region, a cable coupled to the distal region of the core and extending distally thereof, a torque tube positioned over the cable, a coil positioned over a distal portion of the cable, the distal portion of the cable has a non-linear configuration, and a first covering material positioned over the coil, and a second covering material overlying a portion of the core and extending over the torque tube to a region proximal of the first covering material.

5. The thrombectomy wire of claim 4, wherein the non-linear distal portion of the cable is sinuous in configuration.

6. An assembly for breaking up vascular thrombus or other obstructive material, the assembly comprising:

an introducer sheath having a lumen;

a rotational thrombectomy wire slidable within the lumen of the introducer sheath; and

a connector having a distal portion and a proximal portion, the distal portion connectable to the introducer sheath and the proximal portion connectable to a motor housing, the wire selectively operably connectable by a user at a desired time for a procedure to a motor positioned within the motor housing.

7. The assembly of claim 6, wherein the wire comprises a core having a proximal region and a distal region, the distal region having a smaller diameter than the proximal region, and the wire further includes a cable extending distally of the core, a coil attached to a distal portion of the cable and a first covering material positioned over the coil.

8. The assembly of claim 7, wherein the distal portion of the cable and the coil assume a non-linear configuration when exposed from a catheter.

9. The assembly of claim 6, further comprising a housing having a first lumen, the introducer sheath connectable to the housing, and insertable through the first lumen.

10. The assembly of claim 9, wherein the housing includes a suction arm having a second lumen, and the second lumen configured to remove particles removed by rotation of the wire.

11. The assembly of claim 9, further comprising a catheter extending distally of the housing, wherein exposure of the wire from the catheter enables a distal portion of the wire to assume a non-linear configuration.