Anchoring System For a Catheter

• US 20080249476A1
• Filed: 08/31/2006
• Published: 10/09/2008
• Est. Priority Date: 08/31/2005
• Status: Active Grant

• Current Assignee: C.R. Bard, Inc. (Becton, Dickinson & Co)
• Original Assignee: Venetec International Incorporated (Becton, Dickinson & Co)
• Inventors: Pluth, Richard A., Bierman, Steven F.
• Granted Patent: US 9,642,987 B2
• Time in Patent Office: Days
• US Class Current: 604/175
• 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 2025/0253 where the catheter is attached by straps, bands or the like secured by adhesives
• CPC Class Codes: A61M 2025/026 where the straps are releasably secured, e.g. by hook and loop-type fastening devices
• CPC Class Codes: A61M 2025/0266 using pads, patches, tapes or the like
• CPC Class Codes: A61M 2025/028 having a mainly rigid support structure
• CPC Class Codes: A61M 25/00 Catheters; Hollow probes dilators A61M29/00; peritoneal catheters A61M1/285; tracheal tubes A61M16/04; for drainage A61M27/00; for uterus, vagina or rectum A61M31/00 ; for measuring or testing A61B; materials for catheters A61L29/00
• CPC Class Codes: A61M 25/01 Introducing, guiding, advancing, emplacing or holding catheters A61M25/10 takes precedence
• CPC Class Codes: A61M 25/02 Holding devices, e.g. on the body
• CPC Class Codes: Y10S 128/26 Cannula supporters

Abstract

An anchoring system 10 secures a catheter 8 to the body of a patient and arrests axial movement of the catheter 8 without meaningfully impairing fluid flow through the catheter 8. The anchoring system 10 includes an anchor pad 12 that adheres to the patient'"'"'s skin and supports a retainer 20. The retainer 20 includes interengaging structure that moves the retainer 20 between an open and a closed position. When in the open position, the retainer 20 can receive a portion of the catheter 8 and be subsequently moved to the closed position. Advantageously, the interengaging structure allows the retainer 20 to receive catheters 8 of various sizes. In some embodiments the interengaging structure includes a latch mechanism 80 having an angled opening 104 and a strap 24. The angled opening 104 is configured to receive the strap 24 when the retainer 20 is in the closed position. The retainer 20 may further include one or more retention mechanisms to further inhibit axial movement of the catheter 8 relative to the retainer 20 when the catheter 8 is secured therein. In an embodiment, the anchoring system 10 includes a mount that allows the retainer 20 to rotate relative to the anchor pad 12.

Claims

1. An anchoring system for securing a urinary drainage catheter or other medical article to a body of a patient, the catheter comprising a relatively soft tube for insertion into the patient connected to a relatively rigid connector fitting, comprising:

an anchor pad having an upper surface and a lower surface, at least a portion of the lower surface having adhesive for contacting a patient'"'"'s skin;

a retainer rotatably attached to the upper surface of the anchor pad and comprising a base and a strap, the strap being sized to wrap around the catheter distal to a Y-site of the catheter;

the retainer having interengaging structure which secures the strap such that the catheter is secured to the base; and

the retainer and catheter contacting each other over a contact area to provide frictional interaction therebetween, said frictional interaction sufficient to inhibit longitudinal movement of the catheter relative to the retainer.

2. The system of claim 1, wherein the strap is integral with the base.

3. The system of claim 1, wherein the base has a conduit for slidably receiving the strap.

4. The system of claim 1, wherein the base has a concave channel configured to receive an exterior surface of the catheter.

5. The system of claim 1, wherein the base has a flat surface which receives the exterior surface of the catheter.

6. The system of claim 1, wherein the interengaging structure comprises a pawl which releasably fastens the strap to the base.

7. The system of claim 1, wherein the interengaging structure is a latch on the strap which secures the strap to itself.

8. The system of claim 1, wherein the strap has a surface texture which interacts with the surface of the catheter to enhance securement of the catheter in the retainer.

9. The system of claim 8, wherein the texture comprises protrusions.

10. The system of claim 1, wherein the surface of the base is textured to enhance securement.

11. The system of claim 1, wherein the base has an adhesive to enhance securement.

12. The system of claim 1, wherein the relatively soft tube extends over the connector body, and the connector body lies between the strap and the base when the strap is wrapped around the catheter.

13. The system of claim 3, wherein the conduit for receiving the strap has a relatively wide mouth for insertion of the strap therein.

14. The system of claim 3, wherein the conduit is disposed generally parallel to the upper surface of the anchor pad.

15. The system of claim 3, wherein the conduit is angled relative to the upper surface of the anchor pad so as to ease insertion of the strap through the base.

16. The system of claim 3, wherein the mouth of the conduit has a radius which reduces stress concentrations in the strap when the strap is secured around the catheter.

17. The system of claim 1, wherein the interengaging structure comprises a two-way, self-locking, releasable receptacle.

18. The system of claim 1, wherein the interengaging structure comprises a one-way, self-locking, non-releasable receptacle.

19. The system of claim 1, wherein the catheter comprises a relatively soft tube for insertion into the patient connected to a relatively rigid connector fitting, at least a portion of the rigid connector fitting being located between the base and the strap when the strap is secured to the base.

20. The system of claim 1, wherein the retainer is rotatably attached to the anchor pad.

21. The system of claim 20 additionally comprising a mounting base fixed to the upper surface of the anchor pad, and a rotatable coupling connecting the mounting base to the base of the retainer.

22. The system of claim 21, wherein the rotatable coupling is formed by a mounting post affixed to the mounting base and a receptacle formed in the retainer base, the receptacle receiving the mounting post which defines a rotational axis for the retainer.

23. A method for releasably anchoring a medical article, the method comprising:

providing an anchoring device having an adhesive lower surface, and a retainer comprising a base and a strap;

inserting a distal portion of the medical article into a contact area of the retainer such that at least a portion of the connector fitting lies over the base;

positioning the strap over at least a portion of the medical article;

securing the strap such that the retainer and medical article contact each other over the contact area to provide frictional interaction therebetween, the frictional interaction being sufficient to inhibit longitudinal movement of the medical article relative to the retainer; and

securing the anchoring device to the skin of the patient via the adhesive lower surface of the anchoring device.

24. An anchoring system for securing a catheter to a body of a patient, the catheter comprising a relatively soft tube for insertion into the patient connected to a relatively rigid connector fitting, comprising:

an anchor pad having an upper surface and a lower surface, at least a portion of the lower surface having an adhesive surface to attach the anchor pad to the body of the patient;

a retainer mounted on the upper surface of the anchor pad and being capable of receiving a portion of the catheter, the retainer comprising a base and a strap, the base having a contact area, at least a portion of the strap being movable relative to the base so as to move between an open position and a closed position, the strap lying above at least part of the contact area when in the closed position and being sized to wrap around the catheter distal to a Y-site of the catheter; and

a latch mechanism configured to secure the strap when in the closed position such that the catheter is secured to the base, the retainer and catheter contacting each other over at least a portion of the contact area to provide frictional interaction therebetween, the frictional interaction being sufficient to inhibit longitudinal movement of the catheter relative to the retainer.

25. The anchoring system as in claim 24, wherein the base and strap cooperate to form a channel when the strap lies in the closed position, the channel being configured to receive at least a portion of the catheter.

26. The anchoring system as in claim 24, wherein the base defines a channel on the retainer, and the strap is arranged on the base so as to cover at least a portion of the channel when in the closed position.

27. The anchoring system as in claim 24, wherein the retainer additionally comprises means for inhibiting movement of the retained portion of the catheter through the channel of the retainer.

28. The anchoring system as in claim 27, wherein the means for inhibiting movement is an adhesive spot disposed upon the channel such that the adhesive spot lies in contact with the retainer and the catheter when the strap is in the closed configuration and the adhesive spot inhibits motion of the catheter relative to the retainer.

29. The anchoring system as in claim 24, wherein the retainer is rotatably attached to the anchor pad.

30. The anchoring system as in claim 29 additionally comprising a mounting base fixed to the upper surface of the anchor pad, and a rotatable coupling connecting the mounting base to the base of the retainer.

31. The anchoring system as in claim 30, wherein the rotatable coupling is formed by a mounting post affixed to the mounting base and a receptacle formed in the retainer base, the receptacle receiving the mounting post which defines a rotational axis for the retainer.

32. The anchoring system as in claim 24, wherein the latch mechanism comprises a pawl configured to secure to the strap when the strap is in the closed position.

33. The anchoring system as in claim 32, wherein the pawl is integral with the base.

34. The anchoring system as in claim 32, wherein the pawl is integral with the strap.

35. The anchoring system as in claim 24, wherein the latch mechanism is integral with a first end of the strap and comprises a self-locking non-releasable receptacle configured to receive a second end of the strap.

36. The anchoring system as in claim 24, wherein at least a portion of the base has a groove with a radius of curvature that is sized to match a radius of a received portion of the catheter.

37. The anchoring system as in claim 24, wherein the strap is integral with the base.

38. The anchoring system as in claim 24 further comprising a conduit through the base, the conduit being configured to receive the strap.

39. The anchoring system as in claim 25 additionally comprising at least one securement barb that is arranged on at least a portion of a side of the channel.

40. The anchoring system as in claim 39, wherein the securement barb is angled toward one end of the channel.

41. The anchoring system as in claim 39, wherein a first securement barb projects from the strap and a second securement barb projects from the base.

42. The anchoring system as in claim 41, wherein the first and second securement barbs are arranged to cooperate with one another when the strap is closed so as to be capable of capturing a structural portion of the catheter therebetween.

43. The anchoring system as in claim 25 additionally comprising a plurality of friction ridges being located at least over a portion of the channel.

44. The anchoring system as in claim 43, wherein the friction ridges are angled toward one end of the channel.