Wound healing apparatus with bioabsorbable material and suction tubes

• US 20050065484A1
• Filed: 04/05/2004
• Published: 03/24/2005
• Est. Priority Date: 09/10/2003
• Status: Abandoned Application

• Current Assignee: KCI Licensing Incorporated (3M Company)
• Original Assignee: KCI Licensing Incorporated (3M Company)
• Inventors: Watson, Richard L. Jr.
• Application Number:
  US10/818,454
• Publication Number:
  US 20050065484A1
• Time in Patent Office: Days
• US Class Current: 604/289
• CPC Class Codes: A61M 27/00 Drainage appliance for wounds or the like , i.e. wound drains, implanted drains negative pressure wound therapy devices A61M1/90; implements for holding wound open A61B17/02 ; middle ear drainage A61F11/202

Abstract

An apparatus for placement in a wound to promote healing, and a method of treating wounds using such apparatus. The apparatus comprises a bioabsorbable fabric supported by a skeleton of impervious flexible members, such as Teflon™ tubes. When placed inside the wound, the bioabsorbable fabric absorbs into the body within about 5 to 10 days. As the fabric is being absorbed, it serves as a framework for fibroblasts to bridge the gap in the wounded tissue and thereby promote healing. The tubes serve as conduits to remove excess fluids from the wound, preferably under the power of a suction device to which the tubes are connected outside the body. After the fabric is absorbed by the body, the flexible tubes are removed. An expandable embodiment may be deployed into a wound cavity via an introducer tube and plunger. The apparatus may incorporate various sensors.

Claims

1. A wound healing apparatus for treating a wound, comprising:

a plurality of skeletal members; and

a biodegradable material supported by said plurality of skeletal members.

2. The wound healing apparatus of claim 1 wherein:

said biodegradable material comprises a bioabsorbable fabric; and

wherein said plurality of skeletal members and said bioabsorbable fabric form an expandable bag that is deployable from an insertion tube with a plunger.

3. The wound healing apparatus of claim 1 wherein:

said biodegradable material comprises a bioabsorbable fabric; and

wherein said plurality of skeletal members and said bioabsorbable fabric form a substantially planar structure.

4. The wound healing apparatus of claim 1 wherein at least one of said plurality of skeletal members comprises a conduit for removing fluid from the wound.

5. The wound healing apparatus of claim 4 wherein said conduit is placeable in fluid communication with a suction device to assist in removing fluid from the wound.

6. The wound healing apparatus of claim 4 wherein said conduit is adaptable for injecting medicine into the wound.

7. The wound healing apparatus of claim 1 further comprising at least one sensor connected to at least one of said plurality of skeletal members;

wherein said at least one sensor is selected from the group consisting of an oxygen saturation sensor, a carbon dioxide sensor, an electrocardiogram sensor, and a blood pressure sensor.

8. The wound healing apparatus of claim 7 wherein:

said at least one sensor comprises a carbon dioxide sensor; and

said biodegradable material comprises a PHA material.

9. The wound healing apparatus of claim 1 further comprising a plurality of electrodes connected to at least one of said plurality of skeletal members;

said plurality of electrodes being adaptable for providing electrical stimulation to the wound.

10. The wound healing apparatus of claim 1 wherein said plurality of skeletal members comprises a biodegradable material.

11. A wound healing apparatus comprising:

an evacuation tube;

a plurality of flexible tubes connected to said evacuation tube;

a bioabsorbable fabric supported by said plurality of flexible tubes;

an insertion tube in which said plurality of flexible tubes and said bioabsorbable fabric are initially disposed; and

a plunger operably connected to said plurality of flexible tubes;

wherein said insertion tube is insertable into a wound;

wherein said plunger is operable for deploying said plurality of flexible tubes and said bioabsorbable fabric from said insertion tube into the wound;

wherein said plurality of flexible tubes is adaptable for removing fluid from the wound through said evacuation tube; and

wherein said plurality of flexible tubes is removable from the wound after said bioabsorbable fabric is absorbed by the wound.

12. The wound healing apparatus of claim 11 wherein said plurality of flexible tubes and said bioabsorbable fabric form an expandable bag.

13. The wound healing apparatus of claim 11 wherein said evacuation tube is adaptable for connection to a suction device to assist in removing fluid from the wound.

14. The wound healing apparatus of claim 11 further comprising at least one sensor connected to at least one of said plurality of flexible tubes;

wherein said at least one sensor is selected from the group consisting of an oxygen saturation sensor, a carbon dioxide sensor, an electrocardiogram sensor, and a blood pressure sensor.

15. The wound healing apparatus of claim 14 wherein:

said at least one sensor comprises a carbon dioxide sensor; and

said bioabsorbable fabric comprises a PHA material.

16. The wound healing apparatus of claim 11 wherein said evacuation tube and at least one of said plurality of flexible tubes are adaptable for injecting medicine into the wound.

17. The wound healing apparatus of claim 11 wherein said bioabsorbable fabric comprises medicine embedded therein.

18. The wound healing apparatus of claim 11 wherein said plurality of flexible tubes comprises a biodegradable material.

19. The wound healing apparatus of claim 11 further comprising a plurality of electrodes connected to at least one of said plurality of flexible tubes;

said plurality of electrodes being adaptable for providing electrical stimulation to the wound.

20. A wound healing apparatus comprising:

an evacuation tube;

a plurality of flexible tubes connected to said evacuation tube; and

a bioabsorbable fabric supported by said plurality of flexible tubes;

said apparatus being adaptable for placement in a wound;

wherein said plurality of flexible tubes is adaptable for removing fluid from the wound through said evacuation tube; and

wherein said plurality of flexible tubes is removable from the wound after said bioabsorbable fabric is absorbed by the wound.

21. The wound healing apparatus of claim 20 wherein said plurality of flexible tubes and said bioabsorbable fabric form a substantially flat structure.

22. The wound healing apparatus of claim 20 wherein said plurality of flexible tubes and said bioabsorbable fabric form a curved structure.

23. The wound healing apparatus of claim 20 wherein said evacuation tube is adaptable for connection to a suction device to assist in removing fluid from the wound.

24. The wound healing apparatus of claim 20 further comprising at least one sensor connected to at least one of said plurality of flexible tubes;

wherein said at least one sensor is selected from the group consisting of an oxygen saturation sensor, a carbon dioxide sensor, an electrocardiogram sensor, and a blood pressure sensor.

25. The wound healing apparatus of claim 24 wherein:

said at least one sensor comprises a carbon dioxide sensor; and

said bioabsorbable fabric comprises a PHA material.

26. The wound healing apparatus of claim 20 wherein said bioabsorbable fabric comprises medicine embedded therein.

27. The wound healing apparatus of claim 20 wherein said evacuation tube and at least one of said plurality of flexible tubes are adaptable for injecting medicine into the wound.

28. The wound healing apparatus of claim 20 wherein said plurality of flexible tubes comprises a biodegradable material.

29. The wound healing apparatus of claim 20 further comprising a plurality of electrodes connected to at least one of said plurality of flexible tubes;

said plurality of electrodes being adaptable for providing electrical stimulation to the wound.

30. A method of treating a wound of a patient, comprising the following steps:

placing a wound healing apparatus in the wound, said apparatus comprising;

a plurality of skeletal members; and

a biodegradable material supported by said plurality of skeletal members; and

allowing said biodegradable material to be absorbed in the wound.

31. The method of claim 30 wherein at least one of said plurality of skeletal members comprises a conduit, and wherein said method further comprises the step of:

removing fluid from the wound through said conduit.

32. The method of claim 31 further comprising the step of:

placing said conduit in fluid communication with a suction device.

33. The method of claim 30 wherein at least one of said plurality of skeletal members comprises a conduit, and wherein said method further comprises the step of:

injecting medicine into the wound through said conduit.

34. The method of claim 30 wherein said biodegradable material comprises a bioabsorbable fabric, and wherein said plurality of skeletal members and said bioabsorbable fabric form an expandable bag initially disposed within an insertion tube, and wherein said method further comprises the steps of:

inserting said insertion tube into the wound; and

deploying said expandable bag into the wound.

35. The method of claim 30 wherein said plurality of skeletal members and said biodegradable material form a substantially flat structure.

36. The method of claim 30 wherein said plurality of skeletal members and said biodegradable material form a curved structure.

37. The method of claim 30 wherein said wound healing apparatus further comprises an oxygen saturation sensor connected to at least one of said plurality of skeletal members, and wherein said method further comprises the step of:

measuring an oxygen saturation level of blood in the vicinity of the wound with said oxygen saturation sensor.

38. The method of claim 37 further comprising the step of:

calculating a heart rate of the patient based on a signal from said oxygen saturation sensor.

39. The method of claim 30 wherein said placing step is performed as part of a surgical procedure.

40. The method of claim 39 wherein said surgical procedure is a “

flap and graft”

plastic surgery procedure.

41. The method of claim 39 further comprising the step of:

closing skin over said apparatus.

42. The method of claim 30 wherein said biodegradable material comprises a PHA material, and wherein said method further comprises the step of:

placing a carbon dioxide sensor in the wound to monitor the wound for infection.

43. The method of claim 30 wherein said wound healing apparatus further comprises a plurality of electrodes connected to at least one of said plurality of skeletal members, and wherein said method further comprises the step of:

stimulating the wound with electricity through said plurality of electrodes.

44. The method of claim 30 wherein said biodegradable material comprises medicine embedded therein.

45. The method of claim 30 wherein said wound healing apparatus further comprises an ECG sensor connected to said plurality of skeletal members, and wherein said method further comprises the step of:

monitoring ECG activity in the vicinity of the wound with said ECG sensor.

46. The method of claim 30 wherein said wound healing apparatus further comprises a pressure transducer connected to said plurality of skeletal members, and wherein said method further comprises the step of:

monitoring blood pressure in the vicinity of the wound with said pressure transducer.

47. The method of claim 30 further comprising the step of:

removing said plurality of skeletal members from the wound.

48. The method of claim 30 wherein said plurality of skeletal members is made of a biodegradable material, and wherein said method further comprises the step of:

allowing said plurality of skeletal members to be absorbed in the wound.