Anchor Systems and Methods

• US 20100016801A1
• Filed: 07/16/2008
• Published: 01/21/2010
• Est. Priority Date: 07/16/2008
• Status: Active Grant

• Current Assignee: Interrad Medical, Inc.
• Original Assignee: Interrad Medical, Inc.
• Inventors: Rosenberg, Michael, Killion, Jeffrey D., Taylor, Kyle P., Forsberg, Andrew T., Christianson, Mark R.
• Granted Patent: US 8,038,653 B2
• Time in Patent Office: Days
• US Class Current: 604/174
• 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 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

Abstract

Some embodiments of a medical device anchor system include an anchor device that receives a medical instrument (such as a catheter or the like) and secures the instrument in place relative to a skin penetration point. In some circumstances, the anchor device may allow the anchor device to be used after medical instrument is already in place without the need for a second penetration point for the anchor device.

Claims

1. An anchor system for securing a medical instrument, comprising:

a retainer body to couple to a catheter;

a plurality of flexible anchors releasably coupled to the retainer body, each anchor comprising a flexible tine that is deployable in a subcutaneous region to secure the retainer body relative to a penetration point; and

an actuator that, when activated, moves the anchors from a non-deployed position to a deployed position in which the anchors flexible anchors extend distally from the retainer body and into the subcutaneous region.

2. The anchor system of claim 1, wherein when the anchors are separable from the retainer body when deployed in the subcutaneous region.

3. The anchor system of claim 2, wherein the plurality of anchors are releasably coupled together by the retainer body such that the anchors are collectively deployable into the subcutaneous region, and the anchors are separable from one another when the anchors are deployed in the subcutaneous region so that a first anchor is removable from the subcutaneous region independent of a second anchor.

4. The anchor system of claim 2, wherein the anchors are deployable to extend distally from the retainer body and into the penetration point occupied by the catheter when the retainer body couples to the catheter.

5. The anchor system of claim 1, wherein the actuator comprises a delivery device that is separable from the retainer body.

6. The anchor system of claim 5, wherein the delivery device comprises a movable shaft that is adjustable from a first position to a second position so as to move the anchors toward the deployed position and that is adjustable from the second position to a third position so as to decouple the retainer body from the delivery device.

7. The anchor system of claim 1, wherein the actuator is separable into a first body portion and a second body portion, and the plurality of anchors comprise a first anchor coupled to the first body portion and a second anchor coupled to the second body portion.

8. The anchor system of claim 7, wherein the actuator, when activated, shifts to engages a portion of the retainer body to secure the actuator in an activated position.

9. The anchor system of claim 1, wherein the plurality of anchors extend distally from the retainer body to deploy into the penetration point occupied by the catheter when the retainer body couples to the catheter.

10. The anchor system of claim 1, further comprising a retention member coupled to the retainer body that directly engages the catheter when the retainer body couples to the catheter.

11. The anchor system of claim 10, wherein the retention member is adjustable from an opened configuration to a closed configuration to engage the catheter.

12. The anchor system of claim 10, wherein the retention member defines a gripping channel that at least partially surrounds the catheter when the retention member engages the catheter.

13. The anchor system of claim 12, wherein the gripping channel is at least partially defined by a wall comprising a silicone material to press against the catheter when the retention member engages the catheter.

14. The anchor system of claim 10, further comprising a guide channel that extends distally from the retention member and toward the plurality of anchors when the anchors are in the deployed position.

15. The anchor system of claim 1, wherein each of the anchors comprises a material that exhibits superelasticity.

16. The anchor system of claim 1, further comprising the catheter to couple with the retainer body.

17. An anchor system for securing a medical instrument, comprising:

a retainer body to couple with a medical instrument;

one or more anchors that are deployable through a penetration point and into subcutaneous region so as to secure the retainer body relative to the penetration point;

a separable delivery device including an actuator that, when activated, moves the first and second anchors from a non-deployed position to a deployed position in which the anchors flexible anchors extend distally from the retainer body and into the subcutaneous region; and

a release member that releasably couples the first and second anchors to the retainer body, the release member being adjustable from a first position to a second position in which the first and second anchors are decoupled from the retainer body.

18. The anchor system of claim 17, further comprising a retention member coupled to the retainer body that directly engages the medical instrument when the retainer body couples with the medical instrument, the retention member comprising a flexible material to press against the medical instrument.

19. The anchor system of claim 17, wherein when the first and second anchors are releasable from the retainer body when deployed in the subcutaneous region.

20. The anchor system of claim 19, wherein the first and second anchors are releasably coupled together by the retainer body such that the first and second anchors are collectively deployable into the subcutaneous region, and the anchors are separable from one another when the anchors are deployed in the subcutaneous region so that the first anchor is removable from the subcutaneous region independent of the second anchor.

21. The anchor system of claim 20, wherein the anchors are deployable to extend distally from the retainer body and into the penetration point occupied by the medical instrument when the retainer body couples with the medical instrument.

22. The anchor system of claim 17, wherein the actuator of the delivery device is movable from a first position to a second position so as to move the first and second anchors toward the deployed position and is movable from the second position to a third position so as to cause separation of the retainer body from the delivery device.

23. The anchor system of claim 17, wherein each of the first and second anchors include a flexible curved tine that is engageable with bodily tissue when the anchor is deployed in the subcutaneous region.

24. The anchor system of claim 17, further comprising the medical instrument to couple with the retainer body.

25. A method of anchoring a catheter, comprising:

advancing a catheter through a skin penetration point;

directing an anchor device toward the skin penetration point that is occupied by a portion of the catheter, the anchor device comprising;

a retainer body to releasably couple to an external portion of the catheter arranged outside of a biological body, and at least one deployable anchor that is longitudinally adjustable relative to the retainer body from a non-deployed position to a deployed position in which the at least one anchor extends distally from the retainer body; and

deploying the anchor through the penetration point that is occupied by the catheter that at least a portion of the anchor is deployed in a subcutaneous region proximate the penetration point.

26. The method of claim 25, further comprising coupling the catheter to the retainer body so that the catheter is anchored relative to the penetration point.

27. The method of claim 26, wherein the anchor is inserted through the penetration point so that at least a portion of the anchor is deployed in a subcutaneous region while the retainer body is arranged externally of the penetration point.