TEMPORARY RETENTION DEVICE

• US 20070106330A1
• Filed: 11/22/2006
• Published: 05/10/2007
• Est. Priority Date: 09/20/2002
• Status: Active Grant

• Current Assignee: Interrad Medical, Inc.
• Original Assignee: Interrad Medical, Inc.
• Inventors: Claude, Timothy, Rosenberg, Michael
• Granted Patent: US 7,935,127 B2
• Time in Patent Office: Days
• US Class Current: 606/232
• CPC Class Codes: A61B 17/3478 Endoscopic needles, e.g. for infusion biopsy needles A61B10/0233; catheters with injection needles A61M25/0067
• CPC Class Codes: A61B 2017/3484 Anchoring means, e.g. spreading-out umbrella-like structure
• CPC Class Codes: A61M 2025/0293 Catheter, guide wire or the like with means for holding, centering, anchoring or frictionally engaging the device within an artificial lumen, e.g. tube
• 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

Abstract

A retention device for anchoring indwelling catheters, sheath introducers, feeding tubes, ostomy bags or other medical devices beneath the skin of a patient includes an deployable section coupled to a medical device; following introduction into a patient, the deployable section is subcutaneously deployed, securely anchoring the device and coupled medical device for the duration of treatment.

Claims

1. A method of using flexible retention tines, comprising:

advancing one or more retention tines through a skin layer, the retention tines comprising a metallic alloy that exhibits superelastic characteristics such that the retention tines are flexible to a deployed orientation; and

arranging the one or more retention tines in the deployed orientation in a subcutaneous region under the skin layer.

2. The method of claim 1, further comprising withdrawing the one or more retention tines from the subcutaneous region and out through the skin layer.

3. The method of claim 2, wherein the retention tines are flexible to a non-deployed orientation during withdrawal from the subcutaneous region and out through the skin layer.

4. The method of claim 1, wherein the retention tines are arranged in a non-deployed orientation during advancement the one or more retention tines through the skin layer.

5. The method of claim 4, further comprising actuating a control rod that is coupled to the retention tines so as to flexibly adjust the retention tines from the non-deployed orientation to the deployed orientation in the subcutaneous region under the skin layer.

6. The method of claim 5, further comprising maintaining the retention tines in the deployed orientation using a locking system.

7. The method of claim 5, further comprising disposing an anchor sleeve device on the skin layer proximate to the retention tines.

8. The method of claim 7, wherein the anchor sleeve device is disposed on the skin layer proximate to an underlying vessel.

9. The method of claim 8, wherein the anchor sleeve device is retained in position on the skin layer by the retention tines arranged in the subcutaneous region in the deployed orientation.

10. The method of claim 1, wherein the one or more retention tines are formed from nitinol wire, sheet, or tubing that exhibits superelasticity at human body temperature.

11. The method of claim 1, wherein each of the one or more retention tines extends in a partial arc when arranged in the deployed orientation in the subcutaneous region.

12. The method of claim 11, wherein a convex portion of the partial arc faces outwardly toward the skin layer when the retention tines are arranged in the deployed orientation in the subcutaneous region.

13. A method of securing a device to an area of the body, comprising:

creating an incision in a skin layer proximate to a targeted body vessel;

creating an incision in the targeted body vessel so as to access an internal portion of the targeted vessel;

advancing one or more retention tines through the incision in the skin layer and into a subcutaneous region between the skin layer and the targeted body vessel, the retention tines comprising a nickel-titanium alloy that exhibit superelastics characteristics so that the retention tines are flexibly adjustable from a non-deployed orientation to a deployed orientation, wherein each of the one or more retention tines extends in a partial arc when arranged in the deployed orientation in the subcutaneous region;

actuating a control rod that is coupled to the retention tines so as to flexibly adjust the retention tines from the non-deployed orientation to the deployed orientation in the subcutaneous region under the skin layer;

maintaining the retention tines in the deployed orientation in the subcutaneous region for a period of time;

actuating the control rod to flexibly adjust the retention tines from the deployed orientation to the non-deployed orientation; and

withdrawing the retention tines from the subcutaneous region and out through the skin layer.

14. The method of claim 13, wherein maintaining the retention tines in the deployed orientation comprises using a locking system coupled to the retention tines.

15. The method of claim 13, further comprising disposing an anchor sleeve device on the skin layer proximate to the targeted body vessel.

16. The method of claim 15, wherein the anchor sleeve device is retained in position on the skin layer by the retention tines arranged in the subcutaneous region in the deployed orientation.

17. The method of claim 16, further comprising advancing a catheter device through the anchor sleeve device and into the incision created on the targeted body vessel.

18. The method of claim 17, wherein the catheter device is advanced into the targeted body vessel to be in fluid communication with the internal portion of the targeted body vessel.

19. The method of claim 13, wherein the one or more retention tines are formed from nitinol wire, sheet, or tubing that exhibits superelasticity at human body temperature.

20. The method of claim 13, wherein a convex portion of the partial arc faces outwardly toward the skin layer when the retention tines are arranged in the deployed orientation in the subcutaneous region.