Body portal anchors and systems

• US 8,738,151 B2
• Filed: 04/20/2011
• Issued: 05/27/2014
• Est. Priority Date: 04/28/2010
• Status: Active Grant

• Current Assignee: Medtronic Incorporated (Medtronic Plc)
• Original Assignee: Medtronic Incorporated (Medtronic Plc)
• Inventors: Nelson, Brian D.
• Primary Examiner(s): Lucchesi, Nicholas
• Assistant Examiner(s): MEDWAY, SCOTT J
• Application Number:
  US13/090,482
• Publication Number:
  US 20110270187A1
• Time in Patent Office: 1,133 Days
• Field of Search: 128/207, 285/239, 604/164.01, 604/174, 604/175, 604/178, 604/288.02, 604/415, 604/48, 604/506, 604/510, 604/513, 604/533, 604/535, 604/65, 604/8, 606/129, 606/130, 607/115, 607/116, 607/139
• US Class Current: 607/116
• CPC Class Codes: A61M 2025/024 having a clip or clamp system
• CPC Class Codes: A61M 2025/0246 fixed on the skin having a cover for covering the holding means
• CPC Class Codes: A61M 2025/028 having a mainly rigid support structure
• CPC Class Codes: A61M 2039/0223 having means for anchoring the subcutaneous access site
• CPC Class Codes: A61M 2039/0229 having means for facilitating assembling, e.g. snap-fit housing or modular design
• CPC Class Codes: A61M 2039/0235 having an additional inlet, e.g. for a guidewire or a catheter tube
• CPC Class Codes: A61M 25/02 Holding devices, e.g. on the body
• CPC Class Codes: A61M 39/0208 Subcutaneous access sites for injecting or removing fluids transcutaneous access sites A61M39/0247; implantable infusion devices A61M5/14276
• CPC Class Codes: A61M 39/1011 Locking means for securing connection; Additional tamper safeties A61M39/16 takes precedence
• CPC Class Codes: A61M 39/12 for joining a flexible tube to a rigid attachment
• CPC Class Codes: A61N 1/0539 Anchoring of brain electrode systems, e.g. within burr hole

Abstract

Anchors for securing a therapy device such as a therapy catheter relative to a burr hole, and systems and methods for using the same. Anchors in accordance with embodiments of the present disclosure may include a connector for securing the therapy catheter to a delivery catheter, wherein the connector is independently and removably attachable to the anchor. The connector may secure the therapy catheter relative to the burr hole and isolate forces that may otherwise tend to disrupt the placement of the therapy catheter.

Claims

1. A body portal anchor system comprising:

a base operable to secure to tissue surrounding a body portal;

a connector selectively attachable to the base, wherein the connector, when attached to the base, is operable to fluidly connect with a terminal segment of a therapy catheter associated with the base; and

a retaining member movable, relative to the base, between;

a disengaged position, wherein the retaining member is spaced-apart from the connector so that the connector may move relative to the base; and

an engaged position, wherein the retaining member engages the connector and attaches the connector to the base;

wherein the base defines a catheter connection passage configured to receive both the terminal segment of the therapy catheter and a first end of the connector, wherein the passage forms a trough-like channel in an upper surface of the base, the channel being partially covered by overhanging cinching surfaces, and further wherein the first end of the connector is adapted for insertion into both the passage and a lumen of the therapy catheter.

2. The system of claim 1, wherein the retaining member comprises a pin translatable within an opening formed in the base, the pin configured to engage a slot formed in the connector when the connector is inserted into the passage and the retaining member is in the engaged position.

3. The system of claim 1, wherein the connector further comprises a second end adapted for insertion into a lumen of a delivery catheter.

4. The system of claim 1, wherein either the retaining member or the connector comprises an anti-rotate key configured to limit rotational movement of the connector relative to the base when the connector is inserted into the passage and the retaining member is in the engaged position.

5. The system of claim 1, wherein the passage is configured to limit movement of the connector in a direction transverse to a longitudinal axis of the passage.

6. The system of claim 1, wherein the base defines a central opening and wherein the passage extends from the central opening outwardly through a peripheral edge of the base.

7. The system of claim 6, further comprising a cap, the cap attachable to the base to cover the central opening.

8. A burr hole anchor system comprising:

an annular base adapted to secure to bone surrounding a burr hole, wherein the base comprises a peripheral edge and further defines a central opening, wherein a catheter connection passage extends from the central opening outwardly through the peripheral edge;

a connector selectively attachable to the base, wherein the connector, when attached to the base, is adapted to fluidly connect with a terminal segment of a therapy catheter associated with the base; and

a retaining member movable, relative to the base, between;

a disengaged position, wherein the retaining member is spaced-apart from the connector so that the connector may move relative to the base; and

an engaged position, wherein the retaining member engages the connector and attaches the connector to the base;

wherein the passage is configured to receive both the terminal segment of the therapy catheter and a first end of the connector, wherein the passage forms a trough-like channel in an upper surface of the base, the channel partially covered by overhanging cinching surfaces, and further wherein the first end of the connector is adapted for insertion into a lumen of the therapy catheter.

9. The system of claim 8, wherein the retaining member comprises a pin translatable within an opening formed in the base, the pin configured to engage a slot formed in the connector when the connector is inserted into the passage and the retaining member is in the engaged position.

10. The system of claim 8, wherein the connector further comprises a second end adapted for insertion into a lumen of a delivery catheter.

11. The system of claim 8, wherein either the retaining member or the connector comprises an anti-rotate key configured to limit rotational movement of the connector relative to the base when the connector is inserted into the passage and the retaining member is in the engaged position.

12. A body portal anchor system comprising:

a base operable to secure to tissue surrounding a body portal;

a connector selectively attachable to the base, wherein the connector, when attached to the base, is operable to fluidly connect with a terminal segment of a therapy catheter associated with the base; and

a retaining member movable, relative to the base, between;

a disengaged position, wherein the retaining member is spaced-apart from the connector so that the connector may move relative to the base; and

an engaged position, wherein the retaining member engages the connector and attaches the connector to the base, and further wherein the retaining member moves along a direction transverse to a longitudinal axis of the connector as the retaining member moves between the disengaged and engaged positions;

wherein the base defines a catheter connection passage configured to receive both the terminal segment of the therapy catheter and a first end of the connector, and further wherein the first end of the connector is adapted for insertion into both the passage and a lumen of the therapy catheter.

13. The system of claim 12, wherein the passage forms a trough-like channel in an upper surface of the base, the channel partially covered by overhanging cinching surfaces.

14. The system of claim 12, wherein the retaining member comprises a pin translatable within an opening formed in the base, the pin configured to engage a slot formed in the connector when the connector is inserted into the passage and the retaining member is in the engaged position.

15. The system of claim 12, wherein the connector further comprises a second end adapted for insertion into a lumen of a delivery catheter.

16. The system of claim 12, wherein either the retaining member or the connector comprises an anti-rotate key configured to limit rotational movement of the connector relative to the base when the connector is inserted into the passage and the retaining member is in the engaged position.

17. The system of claim 12, wherein the passage is configured to limit movement of the connector in a direction transverse to a longitudinal axis of the passage.

18. The system of claim 12, wherein the base defines a central opening and wherein the passage extends from the central opening outwardly through a peripheral edge of the base.

19. The system of claim 18, further comprising a cap, the cap attachable to the base to cover the central opening.

20. A body portal anchor system comprising:

a base operable to secure to tissue surrounding a body portal;

a connector selectively attachable to the base, wherein the connector, when attached to the base, is operable to fluidly connect with a terminal segment of a therapy catheter associated with the base; and

a retaining member movable, relative to the base, between;

a disengaged position, wherein the retaining member is spaced-apart from the connector so that the connector may move relative to the base; and

an engaged position, wherein the retaining member engages the connector and attaches the connector to the base, and further wherein the retaining member comprises opposing resilient legs configured to be received partially within a circumferential groove formed in an outer surface of the connector;

wherein the base defines a catheter connection passage configured to receive both the terminal segment of the therapy catheter and a first end of the connector, and further wherein the first end of the connector is adapted for insertion into both the passage and a lumen of the therapy catheter.

21. The system of claim 20, wherein the passage forms a trough-like channel in an upper surface of the base, the channel partially covered by overhanging cinching surfaces.

22. The system of claim 20, wherein the retaining member comprises a pin translatable within an opening formed in the base, the pin configured to engage a slot formed in the connector when the connector is inserted into the passage and the retaining member is in the engaged position.

23. The system of claim 20, wherein the connector further comprises a second end adapted for insertion into a lumen of a delivery catheter.

24. The system of claim 20, wherein either the retaining member or the connector comprises an anti-rotate key configured to limit rotational movement of the connector relative to the base when the connector is inserted into the passage and the retaining member is in the engaged position.

25. The system of claim 20, wherein the passage is configured to limit movement of the connector in a direction transverse to a longitudinal axis of the passage.

26. The system of claim 20, wherein the base defines a central opening and wherein the passage extends from the central opening outwardly through a peripheral edge of the base.

27. The system of claim 26, further comprising a cap, the cap attachable to the base to cover the central opening.