Devices and systems for thrombus treatment

• US 9,308,007 B2
• Filed: 03/13/2013
• Issued: 04/12/2016
• Est. Priority Date: 08/14/2012
• Status: Active Grant

• Current Assignee: W. L. Gore & Associates (W.L. Gore & Associates)
• Original Assignee: W. L. Gore & Associates (W.L. Gore & Associates)
• Inventors: Cully, Edward H., Friedman, Nathan L., Zacharias, Eric H.
• Primary Examiner(s): Manahan, Todd E
• Assistant Examiner(s): Herbermann, Erich
• Application Number:
  US13/802,437
• Publication Number:
  US 20140052161A1
• Time in Patent Office: 1,126 Days
• Field of Search: 606/200, 606/159, 606/114, 606/128, 606/127, 606/110
• US Class Current: 1/1
• 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 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 2017/22069 Immobilising; Stabilising
• CPC Class Codes: A61B 2017/2212 having a closed distal end, e.g. a loop
• CPC Class Codes: A61B 2017/320004 abrasive
• CPC Class Codes: A61B 2017/320716 comprising means for preventing embolism by dislodged material
• 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: A61F 2/013 Distal protection devices, i.e. devices placed distally in combination with another endovascular procedure, e.g. angioplasty or stenting
• CPC Class Codes: A61F 2002/018 made from tubes or sheets of material, e.g. by etching or laser-cutting
• CPC Class Codes: A61M 25/00 Catheters; Hollow probes dilators A61M29/00; peritoneal catheters A61M1/285; tracheal tubes A61M16/04; for drainage A61M27/00; for uterus, vagina or rectum A61M31/00 ; for measuring or testing A61B; materials for catheters A61L29/00

Abstract

A thrombus treatment device includes a support wire, a body frame portion that is disposed about an axis defined by the support wire, one or more tethers that each have a first end and a second end, and a filter element extending from the body frame portion. Each of the one or more tethers is attached at its first end to the body frame portion, and at its second end to a collar that couples the second end of each of the multiple tethers to the support wire. When the collar is positioned substantially within a region interior of the body frame portion, a rotational actuation of the support wire causes a swiveling motion of the one or more tethers.

Claims

1. A thrombus treatment device, comprising:

a support wire;

a body frame portion that is disposed about an axis defined by the support wire, wherein the body frame portion defines one or more closed interstices, the body frame is operable to expand with a radial force sufficient to embed in thrombus allowing protrusion of thrombus material within an interior of the body frame;

a tether portion that includes one or more tethers, said one or more tethers extending from the body frame portion to a collar that is coupled to the support wire; and

a filter portion that extends from the body frame portion,

wherein, when the collar is positioned substantially within a region interior of the body frame portion or filter portion, articulation of the support wire causes a portion of the one or more tethers to sweep through a range of motion and does not impart substantial motion to the body frame portion, the articulation of the support wire being at least a rotation of the support wire up to 270 degrees.

2. The device of claim 1, wherein the articulation of the support is a rotation of said support wire and causes substantially zero motion of the body frame portion.

3. The device of claim 2, wherein the device includes, with respect to the rotation of the support wire, a neutral position associated with a zero-degree rotation of the support wire, a first torqued position associated with a clockwise rotation of the support wire, and a second torqued position associated with a counterclockwise rotation of the support wire.

4. The device of claim 3, wherein the one or more tethers comprise a first generally linear shape when the device is in the first torqued position, and comprises a second generally linear shape when the device is in the second torqued position.

5. The device of claim 1, wherein the one or more tethers are adapted to sever, when the support wire is articulated, at least a portion of thrombotic material that protrudes through the one or more interstices defined by the body frame portion.

6. The device of claim 1, wherein articulation of the support wire is a rotation of the support wire up to 180 degrees and causes the portion of the one or more tethers to sweep through a range of motion and does not impart substantial motion to the body frame portion.

7. A thrombus treatment device, comprising:

a support wire;

a body frame portion that is disposed about an axis defined by the support wire, wherein the body frame portion defines one or more closed interstices, the body frame is operable to expand with a radial force sufficient to embed in thrombus allowing protrusion of thrombus material within an interior of the body frame;

a tether portion that includes one or more tethers, said one or more tethers extending from the body frame portion to a collar that is coupled to the support wire; and

a filter portion that extends from the body frame portion,

wherein, when the collar is positioned substantially within a region interior of the body frame portion or filter portion, a manipulation of the support wire causes a portion of the one or more tethers to sweep through a range of motion and does not impart substantial motion to the body frame portion, the manipulation of the support wire being at least a rotation of the support wire up to 270 degrees.

8. The thrombus treatment device of claim 7, wherein the manipulation of the support wire additionally includes a linear movement substantially parallel to the axis.

9. The device of claim 7, wherein the rotational movement of the support wire is up to 180 degrees.

10. The device of claim 7, wherein the device includes, with respect to the rotation of the support wire, a neutral position associated with a zero-degree rotation of the support wire, a first torqued position associated with a clockwise rotation of the support wire, and a second torqued position associated with a counterclockwise rotation of the support wire.

11. The device of claim 10, wherein the one or more tethers comprise a first generally linear shape when the device is in the first torqued position, and comprises a second generally linear shape when the device is in the second torqued position.

12. The device of claim 7, wherein the one or more tethers are adapted to sever, when the support wire is rotated, at least a portion of thrombotic material that protrudes through the one or more interstices defined by the body frame portion.