SYSTEM FOR ANCHORING MEDICAL DEVICES

• US 20090326473A1
• Filed: 06/27/2008
• Published: 12/31/2009
• Est. Priority Date: 06/27/2008
• Status: Active Grant

• Current Assignee: Interrad Medical, Inc.
• Original Assignee: Interrad Medical, Inc.
• Inventors: Rosenberg, Michael S., Taylor, Kyle P., Forsberg, Andrew T., Christianson, Mark R.
• Granted Patent: US 8,235,948 B2
• Time in Patent Office: Days
• US Class Current: 604/180
• 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 2210/04 Skin
• 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: Y10S 128/26 Cannula supporters

Abstract

Some embodiments of a medical device anchor system include an anchor device that receives a catheter (or other medical instrument) and secures the catheter in place relative to a skin penetration point. In some embodiments, the anchor device can secure the catheter in an operative position relative to the skin without the use of sutures or skin tapes.

Claims

1. An anchor device for securing the position of a catheter, comprising:

a retainer body to releasably couple to a catheter, the retainer body being separable into a first body portion and a second body portion; and

first and second anchors that extend distally from 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, the first anchor being coupled to the first body portion and the second anchor being coupled to the second body portion,

wherein the first and second body portions are releasably coupled together so that the first and second anchors are collectively deployable into the subcutaneous region, and the first and second body portions are separable from one another when the first and second anchors are deployed in the subcutaneous region so that the first anchor is removable from the subcutaneous region independent of the second anchor.

2. The anchor device of claim 1, wherein the first and second anchors that extend distally toward a portion of the catheter that passes through a skin penetration point when the retainer body releasably couples to the catheter.

3. The anchor device of claim 2, wherein the first and second first and second anchors that extend distally from the retainer body to deploy into the skin penetration point occupied by the catheter when the when the retainer body releasably couples to the catheter.

4. The anchor device of claim 1, wherein the retainer body includes a retention member that releasably engages the catheter.

5. The anchor device of claim 4, wherein the retention member is adjustable from an opened configuration to a closed configuration to engage the catheter.

6. The anchor device of claim 5, wherein the retention member defines a gripping channel that at least partially surrounds the catheter when the retention member is adjusted to the closed configuration to engage the catheter.

7. The anchor device of claim 6, 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 is adjusted to the closed configuration to engage the catheter.

8. The anchor device of claim 4, further comprising a guide channel that extends distally from the retention member and toward the first and second anchors.

9. The anchor device of claim 4, wherein the retention portion comprises an adhesive pad to engage the catheter.

10. The anchor device of claim 1, wherein the first body portion comprises an interface surface that is detachably secured to a complementary interface surface of the second body portion.

11. The anchor device of claim 10, wherein the interface surface of the first body portion is releasably adhered to the complementary interface surface of the second body portion.

12. The anchor device of claim 1, each of the first and second anchors comprises a metallic material that exhibits superelasticity when used in a human body.

13. An anchor system for securing the position of a medical instrument, comprising:

a medical instrument that is insertable into a skin penetration point; and

an anchor device comprising a retainer body and one or more subcutaneous anchors, wherein;

the retainer body releasably secures with the medical instrument when the medical instrument is inserted into the skin penetration point; and

the one or more anchors extend distally from the retainer body and toward the skin penetration point when the medical instrument is inserted into the skin penetration point, each anchor comprising a tine that deploys in a subcutaneous region to secure the retainer body relative to the skin penetration point.

14. The anchor system of claim 13, wherein the one or more anchors extend distally from the retainer body such that the retainer body is arranged external to the skin penetration point when the tine is deployed in the subcutaneous region.

15. The anchor system of claim 13, wherein the retainer body is separable into a first body portion and a second body portion, and the anchors comprise a first anchor coupled to the first body portion and a second anchor coupled to the second body portion.

16. The anchor system of claim 15, wherein the first and second body portions are releasably coupled together so that the first and second anchors are collectively insertable into the subcutaneous region, and the first and second portions are separable from one another when the first and second anchors are inserted in the subcutaneous region so that the first anchor is removable from the subcutaneous region independent of the second anchor.

17. The anchor system of claim 15, wherein the first body portion comprises an interface surface that is detachably secured to a complementary interface surface of the second body portion.

18. The anchor system of claim 13, the one or more subcutaneous anchors comprise a metallic material that exhibits superelasticity when used in a human body.

19. The anchor system of claim 13, wherein the medical instrument comprises a catheter.

20. A method of anchoring a catheter, comprising:

advancing a catheter though 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 the body, and at least one anchor extending distally from the retainer body; and

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

21. The method of claim 20, further comprising securing the catheter with the retainer body so that the catheter is anchored relative to the skin penetration point.

22. The method of claim 21, wherein the anchor is inserted through the skin penetration point so that at least a portion of the anchor is deployed in a subcutaneous region while the retainer body is arrange externally of the skin penetration point.