Anchor deployment apparatus

• US 8,632,502 B2
• Filed: 10/01/2010
• Issued: 01/21/2014
• Est. Priority Date: 03/27/2008
• Status: Active Grant

• Current Assignee: Medtronic Incorporated (Medtronic Plc)
• Original Assignee: Medtronic Incorporated (Medtronic Plc)
• Inventors: Behymer, Bruce A., Silverberg, Jacob W., Klardie, Michael R., Kern, Michael J.
• Primary Examiner(s): Sirmons, Kevin C
• Assistant Examiner(s): HAYMAN, IMANI N
• Application Number:
  US12/896,147
• Publication Number:
  US 20110040257A1
• Time in Patent Office: 1,208 Days
• Field of Search: 604174-179, 606/129, 606/151, 606/153
• US Class Current: 604/174
• CPC Class Codes: A61B 17/10 for applying or removing wound clamps, e.g. containing only one clamp or staple A61B17/076 takes precedence; containing multiple wound clamps A61B17/068; Wound clamp magazines containers, packaging elements or packages specially adapted for particular articles or with special means for dispensing contents B65D83/00, B65D85/00
• CPC Class Codes: A61M 2025/0213 where the catheter is attached by means specifically adapted to a part of the human body
• CPC Class Codes: A61M 2025/028 having a mainly rigid support structure
• CPC Class Codes: A61M 2025/0286 anchored in the skin by suture or other skin penetrating devices
• CPC Class Codes: A61M 25/02 Holding devices, e.g. on the body
• CPC Class Codes: A61M 25/04 in the body, e.g. expansible A61M25/10, A61M16/0488 take precedence
• CPC Class Codes: A61N 1/05 for implantation or insertion into the body, e.g. heart electrode A61N1/06 takes precedence
• CPC Class Codes: A61N 1/0558 Anchoring or fixation means therefor
• CPC Class Codes: A61N 1/057 Anchoring means; Means for fixing the head inside the heart
• CPC Class Codes: A61N 2001/0582 Suture sleeves

Abstract

An anchor deployment apparatus for deploying an anchor about a therapy delivery element includes an anchor receiving element having an elongate member having a distal opening and a lumen extending proximally in the elongate member from the distal opening. The lumen of the elongate member is configured to slidably receive at least a portion of a therapy delivery element. The anchor deployment tool further includes an anchor engagement element having (i) a body forming a channel in which the elongate member of the anchor receiving element is axially movable, and (ii) an engagement feature forming at least a part of the channel. The engagement feature is configured to engage the anchor when the anchor is disposed about the elongate member and the elongate member is moved distally relative to the engagement element, and to cause the anchor to move distally along the elongate member when the feature is engaged with the anchor and the elongate member is moved distally relative to the engagement element. The anchor deployment tool also includes an alignment element secured relative to the elongate member and configured to secure the elongate member relative to the body of the anchor engagement element to restrict movement of the elongate member orthogonal to the axis of the channel. The anchor receiving element and the alignment element may be formed from the same or different parts.

Claims

1. An anchor deployment apparatus for deploying an anchor about a therapy delivery element, comprising:

an anchor receiving element having an elongate member having a distal opening and a lumen extending proximally in the elongate member from the distal opening, the lumen of the elongate member being configured to slidably receive at least a portion of a therapy delivery element;

an anchor engagement element having (i) a body forming a channel in which the elongate member of the anchor receiving element is axially movable, and (ii) an engagement feature forming at least a part of the channel,

wherein the engagement feature is configured to engage the anchor when the anchor is disposed about the elongate member, and to cause the anchor to move distally along the elongate member when the feature is engaged with the anchor and the elongate member is moved proximally relative to the engagement element; and

an alignment element secured relative to the elongate member and configured to secure the elongate member relative to the body of the anchor engagement element to restrict movement of the elongate member orthogonal to the axis of the channel,

wherein the anchor receiving element and the alignment element are formed from the same or different parts.

2. The anchor deployment apparatus of claim 1, wherein the elongate member of the anchor receiving element further comprises a proximal opening and the lumen extends through the elongate member from the proximal opening to the distal opening.

3. The anchor deployment apparatus of claim 1, wherein the alignment element comprises first and second opposing deflectable arms, wherein in a relaxed configuration at least a portion of the deflectable arms on are separated by a distance less than a width of at least a portion of the body of the anchor engagement element.

4. The anchor deployment apparatus of claim 3, wherein the first and second deflectable arms comprise inwardly extending portions separated by the distance less than a width of at least a portion of the body of the anchor engagement element, wherein the first and second arms are outwardly deflectable such that the inwardly extending portions may be advanced about the body of the anchor engagement element beyond the portion having a width greater than the distance between the inwardly extending portions in a relaxed state.

5. The anchor deployment apparatus of claim 4, wherein the body of the anchor engagement element comprises an first and second generally opposing indented portions having a width less than the distance between the inwardly deflectable portions in a relaxed state and are configured to receive the inwardly extending portions of the first and second deflectable arms.

6. The anchor deployment apparatus of claim 5, wherein the indented portions extend a distance along the length of the body of the anchor receiving element and are configured to slidably receive the inwardly extending portions of the first and second deflectable arms.

7. The anchor deployment apparatus of claim 1, wherein the alignment element further comprises a rail slidably receivable by the channel of the anchor engagement element.

8. The anchor deployment apparatus of claim 7, wherein the rail is coaxial with the elongate member of the anchor receiving element.

9. The anchor deployment apparatus of claim 1, wherein the alignment element forms a part of a handle of the anchor receiving element.

10. The anchor deployment apparatus of claim 1, wherein the anchor engagement element further comprises a stop feature that protrudes into the channel, wherein the stop feature is configured and positioned to engage the alignment element and to prevent the alignment element from being moved proximally in the channel once engaged by the stop feature.

11. The anchor deployment apparatus of claim 1, wherein the anchor engagement feature completely surrounds a portion of the channel.

12. The anchor deployment apparatus of claim 1, wherein the channel comprises a distal ramp to facilitate exit and extension of a proximal portion of a therapy delivery element beyond a distal portion of the channel when the therapy delivery element is slid proximally in the channel.

13. A system comprising:

an anchor having a first opening, a second opening, a body member disposed between the first and second opening, and a lumen extending though the body member from the first opening to the second opening, wherein the body member is formed from an elastic material and wherein at least a portion of the body member has a first inner diameter defined by the lumen in a relaxed state and a second inner diameter defined by the lumen in a radially stretched state, wherein the first inner diameter is smaller than the second inner diameter;

a therapy delivery element having an outer diameter and an outer surface about which the anchor is disposable, the outer diameter being larger than the first inner diameter of the at least a portion of the lumen of the anchor and smaller than the second inner diameter of the at least a portion of the lumen of the anchor; and

an anchor deployment apparatus according to claim 1.

14. A kit comprising:

an anchor having (i) a first opening, (ii) a second opening, (iii) a body member disposed between the first and second opening, (iv) a lumen extending though the body member from the first opening to the second opening, and (v) a retention element secured to or integrally formed with the body member,

wherein the body member is formed from elastic material, the lumen is configured to be disposed about at least a portion of the outer surface of a therapy delivery element, and at least a portion of the body member has a first inner diameter defined by the lumen in a relaxed state and a second inner diameter defined by the lumen in a radially stretched state, the first inner diameter being smaller than the second inner diameter; and

and an anchor deployment apparatus according to claim 1,

wherein the elongate member of the anchor receiving element of the anchor deployment apparatus has an outer diameter larger than the first inner diameter of the at least a portion of the lumen of the anchor and smaller than the second inner diameter of the at least a portion of the lumen of the anchor such that the anchor is disposable about the elongate member and, when the anchor is disposed about the elongate member, the at least a portion of the lumen of the anchor engages at least a portion of the elongate member, and wherein the anchor is moveable about the elongate member.

15. The kit according of claim 14, wherein the anchor is preloaded about the elongate member of the anchor receiving element.

16. The kit of claim 15, wherein the kit comprises more than one anchor receiving elements, wherein an anchor is preloaded about each of the elongate members of the anchor receiving elements.

17. The kit of claim 16, wherein each preloaded anchor is different.

18. The kit of claim 14, wherein the body member of the anchor is formed from silicone.

19. The kit of claim 14, further comprising the therapy delivery element.

20. The kit of claim 19, wherein the therapy delivery element is selected from the group consisting of a lead and a catheter.