Medical line anchoring system

• US 6,213,979 B1
• Filed: 05/29/1997
• Issued: 04/10/2001
• Est. Priority Date: 05/29/1997
• Status: Expired due to Term

• Current Assignee: Venetec International Incorporated (Becton, Dickinson & Co)
• Original Assignee: Venetec International Incorporated (Becton, Dickinson & Co)
• Inventors: Bierman, Steven F.
• Primary Examiner(s): Yasuo, John D.
• Application Number:
  US08/865,231
• Time in Patent Office: 1,412 Days
• Field of Search: 604/174, 604/177, 604/180, 128/DIG.26
• 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 2025/0253 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 25/02 Holding devices, e.g. on the body
• CPC Class Codes: Y10S 128/26 Cannula supporters

Abstract

An anchoring system includes a simply-structured device which permits a portion of a catheter tube or similar medical article to be easily anchored to a patient, desirably without the use of tape or needles and suturing. A unitary retainer desirably includes a base connected to a cover by way of a flexible hinge. The retainer is attached to a flexible anchor pad including an adhesive bottom surface, which can be attached to the patient'"'"'s skin. A catheter is secured to a fitting, which in turn mounts to the retainer. Mounting the fitting to the retainer can be accomplished by inserting posts of the retainer through holes of the fitting, or by mounting the fitting within a channel defined by mounting structures integral to the retainer. The cover is then positioned over the base, by bending the flexible hinge, and latched to the base. Several embodiments of the latching mechanism are disclosed. In one form, the latching mechanism includes one or more posts on the base which can be releasably locked into corresponding slotted holes in the cover.

Claims

1. An anchoring system for securing a medical line to the body of a patient, comprising a retainer, the retainer including a base that defines a receiving area for receiving a portion of the medical line, a cover permanently coupled to the base, the cover being movable between a closed position, in which at least a portion of the cover extends over at least a portion of the receiving area, and an open position, in which the receiving area is at least partially open, a latching mechanism operating between the base and the cover to rcleasably latch the cover to the base with the cover in the closed position, and interacting structure which is adapted to engage the medical line in a non-occlusive manner and to limit longitudinal movement of the medical line through the retainer when the medical line is placed within the receiving area, the interacting structure being located at least partially beneath the cover with the cover in the closed position.

2. The anchoring system of claim 1, wherein the cover is coupled to the base by a flexible hinge.

3. The anchoring system of claim 2, wherein the flexible hinge comprises an elongate leash extending between and permanently connected to the cover and the base.

4. The anchoring system of claim 2, wherein the flexible hinge comprises a rigid support arm fixed to the base and a flexible bridge extending between the support arm and the cover.

5. The anchoring system of claim 2, wherein the base, cover and hinge are integrally formed.

6. The anchoring system of claim 1, wherein the latching mechanism comprises barb member and a latch having a receptacle that releasably receives the barb member.

7. The anchoring system of claim 6, wherein said barb member comprises a shank and a barbed end, and said latch includes at least one tang that projects into the receptacle and cooperates with the barbed end to inhibit unintentional retraction of the barb member from the receptacle.

8. The anchoring system as in claim 7, wherein said tang is formed as a flexible stem.

9. The anchoring system of claim 1, wherein the latching mechanism comprises at least one post extending between the base and the cover and at least one opening sized to receive a portion of the post with the cover in the closed position, and the post includes at least one radial extension.

10. The anchoring system of claim 9, wherein the opening comprises a central hole with a more narrow slot extending from the central hole.

11. The anchoring system of claim 9, wherein the opening comprises a slot extending into either the base or the cover from a respective edge.

12. The anchoring system of claim 9, additionally comprising a keeper mechanism operating between the post and the opening to inhibit movement of the post within the opening with the cover in the closed position.

13. The anchoring system of claim 9, wherein the post extends from the base and the opening is formed in the cover.

14. The anchoring system of claim 13, wherein post comprises a shaft and the radial extension comprises a flared head atop the shaft, the flared head engaging with a cover surface in the closed position.

15. The anchoring system of claim 14 additionally comprising a locator extending radially from the post and spaced along the post from the flared head.

16. The anchoring system of claim 14, wherein the cover comprises a keeper mechanism operating between the post and the cover to inhibit unintentional disengagement of the post from the opening.

17. The anchoring system of claim 16, wherein the keeper mechanism comprises a narrowing waist at a juncture between a slot and a remaining portion of the opening.

18. The anchoring system of claim 16, wherein the keeper mechanism comprises a lip forming a depression within the cover surface and next to a portion of the opening, the depression having a dimension slightly more narrow than the flared head.

19. The anchoring system of claim 1 additionally comprising a fitting adapted to attach to the medical line, and the interacting structure being formed between the fitting and the retainer.

20. The anchoring system of claim 19, wherein the fitting comprises a rigid box clamp engaged with a wing clamp, and the interacting structure comprises at least one hole that extends through corresponding wings of the box clamp and the wing clamp.

21. The anchoring system of claim 19, wherein the fitting comprises an adaptor including an adaptor body, a first connector at a distal end for connection to a first medical line, and a second connector at a proximal end for connection to a second medical line.

22. The anchoring system of claim 21, wherein the interacting structure comprises a channel formed on the retainer and arranged to lie between the base and the cover with the cover in the closed position, the channel being configured to receive a portion of this adapter.

23. The anchoring system of claim 22, wherein the channel has a shape that generally corresponds to the shape of the portion of the fitting to be received.

24. The anchoring system of claim 19, wherein the interacting structure comprises at least one post extending at least partially between the cover and the base with the cover in the closed position.

25. The anchoring system of claim 23, wherein the post is integrally formed with the base.

26. The anchoring system of claim 23, wherein the latching mechanism comprises the post and at least one opening sized to receive at least a portion of the post with the cover in the closed position, and the post includes at least one radial extension.

27. The anchoring system of claim 26, wherein the post comprises a shaft, and the radial extension comprises a flared head atop the shaft.

28. The anchoring system of claim 27 additionally comprising a locator ring defining the maximum radial dimension of the post, and the fitting comprises a hole that is larger than the locator ring.

29. The anchoring system of claim 1, wherein at least a portion of the latching mechanism is integrated with the interacting structure.

30. The anchoring system of claim 29, wherein the latching mechanism comprises a post shank supporting a projection that extends in a direction radial to an axis of the post shank, and the post shank is arranged to form at least a portion of the interacting structure.

31. The anchoring system of claim 1 additionally comprising an adhesive layer coupled to the retainer and adapted to adhesively secure the retainer to the body of a patient.

32. The anchoring system of claim 31 additionally comprising a flexible anchor pad interposed between the retainer and the adhesive layer.

33. The anchoring system of claim 32, wherein the base of the retainer is bonded to the adhesive pad.

55. The anchoring system of claim 1, wherein the cover is smaller than the base.

56. The anchoring system of claim 1, wherein the interacting structure is a pair of posts arranged on the base.

57. The anchoring system of claim 56, wherein the cover has length in a lateral direction sufficient to extend between the pair of posts arranged on the base.

58. The anchoring system of claim 1, wherein the cover has width in a longitudinal direction that is wider than a width of a post formed on the base.

59. The anchoring system of claim 58, wherein the cover has a width sufficient to stabilize a section of the medical line located within the retainer.

34. An anchoring system for securing a medical line to the body of a patient, said anchoring system comprising a fitting adapted to engage with the medical line, the fitting having at least one hole, and a retainer releasably receiving the fitting and comprising a base having a platform and at least one post extending from the platform and arranged to interact with the hole of the fitting, a cover movably coupled to the base so as to be moved between an open position and a closed position, and a latching mechanism operating between the cover and the base to releasably latch the cover to the base in the closed position.

35. The anchoring system of claim 34, wherein the fitting includes a plurality of holes and the base includes a plurality of posts.

36. The anchoring system as in claim 34, wherein the latching mechanism is formed at least between the post and a hole on the retainer.

37. The anchoring system of claim 36, wherein the hole is formed on the cover and includes a central aperture and a slot, the aperture being sized and shaped to receive the protrusion of the post, and the slot extending from the central aperture.

38. The anchoring system of claim 36, wherein the hole is formed on the cover and includes an edge hole at an edge of the cover and a slot extending into the cover from the edge hole.

39. The anchoring system of claim 36, wherein each hole further comprises a retention mechanism to inhibit movement of the post through the hole.

40. The anchoring system of claim 36, wherein the post includes a radial protrusion.

41. An anchoring system for securing a medical line to the body of a patient, comprising:

an adaptor having an adaptor body with a longitudinal axis defined between first and second ends, a first connector at the first end for connection to a first medical line, and a second connector at the second end for connection to a second medical line;

a retainer attachable to the adaptor, including a base, a cover permanently coupled to the base, the cover movable between an open position and a closed position, a latching mechanism for releasably latching the cover to the base in the closed position, and a channel arranged to lie between the base and the cover in the closed position, the channel shaped to retain the adaptor between the cover and the base with the cover in the closed position to inhibit movement of the adapter in a direction generally parallel to the adapter'"'"'s longitudinal axis; and

an adhesive layer attached to the retainer and adapted to adhesively secure the retainer to the body of a patient.

42. The anchor system of claim 41, wherein the latching mechanism comprises a plurality of posts extending from the base and a corresponding plurality of openings in the cover.

43. The anchor system of claim 41, wherein the channel is defined by opposed inner faces of a pair of extensions positioned between the base and the cover with the cover in the closed position.

44. The anchor system of claim 43, wherein the extensions extend from the cover.

45. The anchor system of claim 43, wherein the inner faces are each convex.

46. The anchoring system of claim 41, wherein the cover is permanently attached to the base.

47. The anchoring system of claim 46, wherein a flexible leash couples the cover to the base.

48. The anchoring system of claim 46, wherein a flexible hinge couples the cover to the base, and the flexible hinge comprises a rigid support area fixed to the base and a flexible bridge that extends between the support arm and the cover.

60. The anchoring system of claim 41, wherein the cover is permanently coupled to the base.

61. The anchoring system of claim 41, additionally comprising an adhesive layer coupled to the retainer and adapted to adhesively secure the retainer to the body of a patient.

62. The anchoring system of claim 61, additionally comprising a flexible anchor pad interposed between the anchor pad and the adhesive layer.

63. The anchoring system of claim 61, wherein the base of the retainer is bonded to the adhesive pad.

49. An anchoring system for securing a medical line to the body of a patient, comprising a retainer, the retainer including a base that defines a receiving area for receiving a portion of the medical line and a cover coupled to the base, means for releaseably latching the cover to the base, and means for limiting longitudinal movement of the medical line relative to the retainer, said movement limiting means located at least partially beneath the cover when the cover is latched to the base.

50. An anchoring system as in claim 49 additionally comprising an flexible anchor pad having an adhesive layer on one side, and the retainer is attached to the flexible anchor pad on an opposite side.

51. An anchoring system as in claim 49, wherein the retainer comprises a movable clamp.

52. An anchoring system as in claim 49, wherein the retainer comprises an in-line adapter.

53. An anchoring system as in claim 49, wherein the cover is permanently linked to the base.

54. An anchoring system as in claim 53, wherein the cover and the base are integrally formed such that the retainer has a unitary construction.

64. An anchoring system for securing a fitting, having at least one opening, on a medical line to a body of a patient, the anchoring system comprising a base having a platform and at least one post extending from the platform and arranged to interact with the opening of the fitting, a cover movably coupled to the base so as to be moved between an open position and a closed position, and a latching mechanism operating between the cover and the base to releasably latch the cover to the base in the closed position, the post being disposed at least partially beneath the cover with the cover in the closed position.

65. The anchoring system of claim 64, wherein the cover is coupled to the base by a flexible hinge.

66. The anchoring system of claim 65, wherein the flexible hinge comprises an elongate leash extending between and permanently connected to the cover and the base.

67. The anchoring system of claim 65, wherein the flexible hinge comprises a rigid support arm fixed to the base and a flexible bridge extending between the support arm and the cover.

68. The anchoring system of claim 65, wherein the base, cover and hinge are integrally formed.

69. The anchoring system of claim 64, wherein the latching mechanism comprises a barb member and a latch having a receptacle that releaseably receives the barb member.

70. The anchoring system of claim 69, wherein said barb member comprises a shank and a barbed end, and said latch includes at least one tang that projects into the receptacle and cooperates with the barbed end to inhibit unintentional retraction of the barb member from the receptacle.

71. The anchoring system as in claim 70, wherein said tang is formed as a flexible stem.

72. The anchoring system of claim 64 additionally comprising an adhesive layer coupled to the base and adapted to adhesively secure the base to the body of a patient.

73. The anchoring system of claim 72 additionally comprising a flexible anchor pad interposed between the base and the adhesive layer.

74. The anchoring system of claim 73, wherein the base is bonded to the adhesive pad.