Vessel occluding material extractor

• US 8,728,106 B2
• Filed: 10/19/2011
• Issued: 05/20/2014
• Est. Priority Date: 04/10/2003
• Status: Expired due to Fees

• Current Assignee: Boston Scientific Scimed (Boston Scientific Corporation)
• Original Assignee: Boston Scientific Scimed (Boston Scientific Corporation)
• Inventors: Weber, Jan, Spencer, Steven M.
• Primary Examiner(s): Severson, Ryan
• Assistant Examiner(s): MILES, JONATHAN WADE
• Application Number:
  US13/276,575
• Publication Number:
  US 20120035635A1
• Time in Patent Office: 944 Days
• Field of Search: 606/159, 606/194, 606/198, 606/200, 606/127, 606/128, 623/1.11, 623/1.12
• US Class Current: 606/159
• CPC Class Codes: A61B 17/22031 Gripping instruments, e.g. forceps, for removing or smashing calculi A61B17/221 takes precedence
• CPC Class Codes: A61B 17/221 Gripping devices in the form of loops or baskets for gripping calculi or similar types of obstructions surgical snare instruments A61B17/32056
• CPC Class Codes: A61B 17/320725 with radially expandable cutting or abrading elements A61B17/32075 takes precedence
• CPC Class Codes: A61B 2017/22034 for gripping the obstruction or the tissue part from inside
• CPC Class Codes: A61B 2017/22094 for crossing total occlusions, i.e. piercing
• CPC Class Codes: A61B 2017/2212 having a closed distal end, e.g. a loop
• CPC Class Codes: A61F 2/013 Distal protection devices, i.e. devices placed distally in combination with another endovascular procedure, e.g. angioplasty or stenting

Abstract

Methods, devices, and systems for extracting vessel occluding material are provided. An embodiment of a vessel occluding material extractor includes a host structure, a plurality of expandable members, a slide mechanism, and a circumferential member. The host structure has an elongate axis. The expandable members are connected to the host structure arrayed radially around the elongate axis. The slide mechanism is connected to the expandable members and adjacent the host structure, and is slidable in the direction of the elongate axis. The circumferential member is connected to the expandable members between the connection of the slide mechanism and the host structure to the expandable members.

Claims

1. A method of extracting vessel occluding material, comprising;

advancing a vessel occluding material extractor, having a plurality of expandable members connected to a host structure having an elongate axis, and longitudinally aligned and arrayed radially around the elongate axis, to a predetermined position within a lumen, wherein the expandable members have an unexpanded state having a first diameter for advancing the extractor

bending the expandable members to expand the extractor to an expanded state, having a second diameter larger than the first diameter; and

advancing a treatment device including a radiopaque tip through and beyond the vessel occluding material extractor,

wherein the length of an occluded region distal of the predetermined position within the lumen is determined by advancing the treatment device through and beyond the vessel occluding material extractor.

2. The method of claim 1, wherein advancing a vessel occluding material extractor, includes advancing a vessel occluding material extractor having material spanning between a distal half of the plurality of expandable members to form a filter.

3. The method of claim 1, wherein advancing a vessel occluding material extractor, includes advancing a vessel occluding material extractor having a circumferential member connected to the expandable members.

4. The method of claim 1, wherein bending the expandable members to expand the extractor to an expanded state includes bending the expandable members to form a filtering device.

5. The method of claim 1, further including the step of using the determined length of the occlusion to determine the size and length of stent to be utilized to recanalize the vessel.

6. A method of extracting vessel occluding material, comprising;

advancing a positioning device, having a plurality of expandable members and an elongate central axis, to a predetermined position within a lumen, the positioning device having a first diameter;

expanding the expandable members to expand the positioning device to have a second diameter larger than the first diameter;

advancing a treatment device including a radiopaque tip within and generally parallel to the elongate central axis of the positioning device; and

positioning the treatment device proximate the positioning device,

wherein the length of an occluded region distal of the predetermined position within the lumen is determined by advancing the treatment device through and beyond the vessel occluding material extractor.

7. The method of claim 6, wherein the positioning device includes a catheter centered along the central axis.

8. The method of claim 7, wherein advancing a positioning device includes advancing the positioning device along a guidewire.

9. The method of claim 7, wherein advancing a treatment device includes advancing a treatment device through the catheter of the positioning device.

10. The method of claim 6, wherein advancing a treatment device includes advancing a treatment device along the central axis of the positioning device.

11. The method of claim 6, wherein expanding the expandable members includes manually expanding the expandable members.

12. The method of claim 6, wherein positioning the treatment device proximate the positioning device includes positioning the treatment device on the proximal side of the positioning device with respect to the direction the treatment device is advanced.

13. The method of claim 6, wherein positioning the treatment device proximate the positioning device includes positioning the treatment device on the distal side of the positioning device with respect to the direction the treatment device is advanced.

14. The method of claim 6, further including the step of using the determined length of the occllusion to determine the size and length of stent to be utilized to recanalize the vessel.