Anchor instrumentation and methods

• US 8,142,401 B2
• Filed: 06/03/2010
• Issued: 03/27/2012
• Est. Priority Date: 06/15/2007
• Status: Active Grant

• Current Assignee: Interrad Medical, Inc.
• Original Assignee: Interrad Medical, Inc.
• Inventors: Rosenberg, Michael S.
• Primary Examiner(s): Koharski, Christopher D
• Application Number:
  US12/793,261
• Publication Number:
  US 20100241084A1
• Time in Patent Office: 663 Days
• Field of Search: 604/500, 604506-508, 604/174, 604/164.1, 604/164.11, 604/158, 604/175, 604/192, 604/264
• US Class Current: 604/174
• 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 2025/0293 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 25/04 in the body, e.g. expansible A61M25/10, A61M16/0488 take precedence
• CPC Class Codes: A61M 25/0662 Guide tubes

Abstract

Some embodiments of a medical device anchor system includes an anchor sleeve and a catheter (or other medical instrument) to advance though a working channel of the anchor sleeve. The anchor sleeve may have a subcutaneous cuff device arranged along an outer surface. In such circumstances, the embedded cuff device can inhibit the migration of infection from outside the skin and into the blood stream.

Claims

1. A method of delivering a catheter device to an internal body site, comprising:

advancing an anchor sleeve through a percutaneous opening in a skin layer so that a subcutaneous cuff device arranged along an outer surface of the anchor sleeve is disposed in a subcutaneous region along an underside of the skin layer, the subcutaneous cuff device comprising a biocompatible material that receives tissue ingrowth when disposed in the subcutaneous region along the underside of the skin layer;

advancing a catheter device though a working channel of the anchor sleeve and toward a targeted body site such that a distal catheter tip is moved relative to the subcutaneous cuff device disposed in the subcutaneous region along the underside of the skin layer, wherein the distance from the subcutaneous cuff device to the distal catheter tip defining a cuff-to-tip distance;

adjusting the cuff-to-tip distance by moving the catheter device relative to the anchor sleeve while the subcutaneous cuff device is disposed in the subcutaneous region along the underside of the skin layer; and

releasably affixing the catheter device in the working channel by compressing a cylindrical surface portion of the anchor sleeve upon at least a portion of an outer circumferential surface of the catheter device so that the portion of the outer circumferential surface of catheter device is retained in a fixed relation to the anchor sleeve.

2. The method of claim 1, wherein the step of releasable affixing comprises actuating a locking device to releasably affixes the catheter device to the anchor sleeve when the catheter device reaches the targeted body site.

3. The method of claim 2, further comprising shifting one or more flexible anchors from a non-deployed orientation to a deployed orientation contemporaneously with the actuation of the locking device.

5. The method of claim 1, wherein the catheter device defines at least one lumen that extends to the distal catheter tip.

6. The method of claim 1, further comprising shifting first and second flexible curved anchors from a non-deployed orientation to a deployed orientation in the subcutaneous region along the underside of the skin layer.

7. The method of claim 6, wherein the subcutaneous cuff device is arranged along the outer surface of the anchor sleeve at a position distally of the first and second flexible curved anchors while both the subcutaneous cuff device and the flexible curved anchors are deployed orientation in the subcutaneous region along the underside of the skin layer.

8. The method of claim 1, wherein the subcutaneous cuff device inhibits migration of infection when the cuff device is embedded in the subcutaneous region along the underside of the skin layer.

9. The method of claim 8, wherein the subcutaneous cuff device receives the ingrowth of bodily tissue over a period of time so as to inhibit the migration of infection from outside the skin and into the blood stream.

4. A method of delivering a catheter device to an internal body site, comprising:

advancing an anchor sleeve through a percutaneous opening in a skin layer so that a subcutaneous cuff device arranged along an outer surface of the anchor sleeve is disposed in a subcutaneous region along an underside of the skin layer, the subcutaneous cuff device comprising a biocompatible material that receives tissue ingrowth when disposed in the subcutaneous region along the underside of the skin layer;

advancing a catheter device though a working channel of the anchor sleeve and toward a targeted body site such that a distal catheter tip is moved relative to the subcutaneous cuff device disposed in the subcutaneous region along the underside of the skin layer, wherein the distance from the subcutaneous cuff device to the distal catheter tip defining a cuff-to-tip distance;

adjusting the cuff-to-tip distance by moving the catheter device relative to the anchor sleeve while the subcutaneous cuff device is disposed in the subcutaneous region along the underside of the skin layer;

actuating a locking device to releasably affixes the catheter device to the anchor sleeve when the catheter device reaches the targeted body site; and

shifting one or more flexible anchors from a non-deployed orientation to a deployed orientation contemporaneously with the actuation of the locking device, wherein the anchor sleeve comprises a main body and an actuator that is adjustable relative to the main body from a first position to a second position so as to simultaneously shift the flexible anchors to the deployed orientation and shift the locking device to compress at least a portion of an outer surface of the catheter device.

19. The method of claim 4, wherein the catheter device defines at least one lumen that extends to the distal catheter tip.

20. The method of claim 4, wherein the step of shifting one or more flexible anchors from the non-deployed orientation to the deployed orientation comprises positioning the flexible anchors in the deployed orientation in the subcutaneous region along the underside of the skin layer.

10. A method of delivering a catheter device to an internal body site, comprising:

advancing at least a portion of an anchor device through a percutaneous opening in a skin layer so that a subcutaneous cuff device arranged mounted to the anchor device is disposed in a subcutaneous region along an underside of the skin layer, the subcutaneous cuff device comprising a biocompatible material that receives tissue ingrowth when disposed in the subcutaneous region along the underside of the skin layer;

advancing a catheter device relative to a lockable portion of the anchor device and toward a targeted body site such that a distal catheter tip is moved relative to the subcutaneous cuff device disposed in the subcutaneous region along the underside of the skin layer, wherein the lockable portion of the anchor device is movable to secure with the catheter device, wherein the distance from the subcutaneous cuff device to the distal catheter tip defining a cuff-to-tip distance;

adjusting the cuff-to-tip distance by moving the catheter device relative to the anchor sleeve while the subcutaneous cuff device is disposed in the subcutaneous region along the underside of the skin layer; and

releasably securing the catheter device to the anchor device by compressing the lockable portion of the anchor device against at least a portion of an outer circumferential surface of the catheter device.

11. The method of claim 10, wherein securing the catheter device to the anchor device comprises moving the lockable portion of the anchor device to releasably secure the portion of the outer circumferential surface of the catheter device in a fixed relation to the anchor device after the catheter device is advanced to the targeted body site.

12. The method of claim 11, further comprising shifting one or more flexible anchors from a non-deployed orientation to a deployed orientation contemporaneously with the step of moving the lockable portion of the anchor device.

13. The method of claim 12, wherein the anchor device comprises a main body and an actuator that is adjustable relative to the main body from a first position to a second position so as to simultaneously shift the flexible anchors to the deployed orientation and shift the lockable portion to compress the outer surface of the catheter device.

14. The method of claim 10, wherein the catheter device defines at least one lumen that extends to the distal catheter tip.

15. The method of claim 10, further comprising shifting first and second flexible curved anchors of the anchor device from a non-deployed orientation to a deployed orientation in the subcutaneous region along the underside of the skin layer.

16. The method of claim 15, wherein the subcutaneous cuff device is mounted to the anchor device at a position distally of the first and second flexible curved anchors while both the subcutaneous cuff device and the flexible curved anchors are deployed orientation in the subcutaneous region along the underside of the skin layer.

17. The method of claim 10, wherein the subcutaneous cuff device inhibits migration of infection when the cuff device is embedded in the subcutaneous region along the underside of the skin layer.

18. The method of claim 17, wherein the subcutaneous cuff device receives the ingrowth of bodily tissue over a period of time so as to inhibit the migration of infection from outside the skin and into the blood stream.