Wound dressing suitable for insertion in nasal passages
The invention provides a wound dressing comprising a body and a polymeric film adhered to at least a portion of the body. The body comprises a flexible, porous polyurethane-based foam and a liquid absorbing component. The invention further provides a wound dressing comprising a first body, a second body, and at least one polymeric film disposed between the first and second bodies. The invention additionally provides methods for treating an injury to a patient's nasal passages utilizing a wound dressing according to the invention.
1. A wound dressing having an exterior portion adapted to contact a wound comprising:
(i) a first body comprising a flexible, porous polyurethane-based foam and a liquid absorbing component,
(ii) a second body comprising a flexible, porous polyurethane-based foam and a liquid absorbing component, and
(iii) at least one polymeric film intermediate of at least a portion of a surface of the first body and at least a portion of a surface of the second body.
wherein the first and second bodies are adhered to each other so that at least a portion of the polymeric film is disposed between the first and second bodies, and
wherein at least a portion of the exterior of the first and second bodies comprise the exterior portion of the wound dressing and are capable of absorbing liquid.
2. The wound dressing of claim 1 , wherein the liquid absorbing components comprise a superabsorbent polymer.
3. The wound dressing of claim 2 , wherein the first and second bodies further comprise an adjuvant dispersed in the foam.
4. The wound dressing of claim 3 , wherein the adjuvant comprises glycerin.
5. The wound dressing of claim 4 , wherein the first and second bodies further comprise a surfactant dispersed in the foam.
6. The wound dressing of claim 1 , wherein the first and second bodies further comprise an adjuvant dispersed in the foam.
7. The wound dressing of claim 6 , wherein the adjuvant comprises glycerin.
8. The wound dressing of claim 1 , wherein the first and second bodies further comprise a surfactant dispersed in the foam.
9. The wound dressing of claim 1 , wherein the dressing further comprises a tether attached to the dressing and extending from one end of the dressing to assist in stabilization of the dressing within a body cavity or removal of the dressing from a body cavity.
10. A method for treating an injury to a nasal passage, the method comprising the steps of:
(a) providing a wound dressing having an exterior portion adapted to contact a wound comprising:
(i) a first body comprising a flexible, porous polyurethane-based foam and a liquid absorbing component,
(ii) a second body comprising a flexible, porous polyurethane-based foam and a liquid absorbing component, and
(iii) a polymeric film intermediate of at least a portion of a surface of the first body and at least a portion of a surface of the second body, wherein at least a portion of the exterior of the first and second bodies comprise the exterior portion of the wound dressing and are capable of absorbing liquid,
(b) inserting the wound dressing into a patient's nasal passage so that at least a portion of the exterior portion of the wound dressing contacts an injured surface of the nasal passage.
(c) retaining the wound dressing in the patient's nasal passage for a time sufficient for the injury to at least partially heal, and
(d) removing the wound dressing from the patient's nasal passage.
11. The method of claim 10 , wherein the liquid absorbing component comprises a superabsorbent polymer.
12. The method of claim 10 , wherein the wound dressing further comprises a reinforcing film adhered to at least a portion of a surface of the body.
13. The method of claim 10 , wherein the body of the dressing is provided in a substantially cylindrical, conical, or frustro-conical shape.
14. The method of claim 10 , wherein the wound dressing is folded along its longest dimension prior to insertion into the patient's nasal passage.
15. The method of claim 14 , wherein the wound dressing is folded so that the polymeric film is disposed between the two folded halves of the wound dressing.
16. The method of claim 10 , wherein the wound dressing is rolled or twisted prior to insertion into a patient's nasal passage.
17. A method for treating an injury to a nasal passage, the method comprising the steps of:
(a) providing a wound dressing comprising:
(i) a first body comprising a flexible, porous polyurethane-based foam and a liquid absorbing component,
(ii) a second body comprising a flexible, porous polyurethane-based foam and a liquid absorbing component, and
(iii) at least one polymeric film adhered to at least a portion of a surface of the first or second body,
wherein the first and second bodies are adhered to each other so that at least a portion of the polymeric film is disposed between the first and second bodies,
(b) inserting the wound dressing into a patient's nasal passage so that at least a portion of the wound dressing contacts an injured surface of the nasal passage,
(c) retaining the wound dressing in the patient's nasal passage for a time sufficient for the injury to at least partially heal, and
(d) removing the wound dressing from the patient's nasal passage.
18. The method of claim 17 , wherein the liquid absorbing components comprise a superabsorbent polymer.
19. The method of claim 17 , wherein the first and second bodies are provided in a substantially cylindrical, conical, or frustro-conical shape.
20. The method of claim 17 , wherein the wound dressing is folded prior to insertion into the patient's nasal passage.
21. The method of claim 17 , wherein the wound dressing comprises an external portion, and wherein at least a portion of the exterior portion of the wound dressing contacts the injured surface of the nasal passage during step (c).
22. The method of claim 21 , wherein the liquid absorbing components comprise a superabsorbent polymer.
23. The method of claim 22 , wherein the first and second bodies further comprise an adjuvant dispersed in the foam.
24. The method of claim 23 , wherein the adjuvant comprises glycerin.
25. The method of claim 23 , wherein the first and second bodies further comprise a surfactant dispersed in the foam.
26. The method of claim 17 , wherein the dressing further comprises a tether attached to the dressing and extending from one end of the dressing to assist in stabilization of the dressing within a body cavity or removal.
27. The method of claim 17 , wherein the wound dressing is folded along its longest dimension prior to insertion into the nasal passage.
28. The method of claim 17 , wherein the wound dressing is folded so that the polymeric film is disposed between the two folded halves of the wound dressing.
29. The method of claim 17 , wherein the wound dressing is rolled or twisted prior to insertion into the nasal passage.
30. The method of claim 17 , wherein the polymeric film is semipermeable.