Systems and methods for tissue healing
Systems, methods and devices are provided for use in a negative pressure wound therapy system for healing a wound in a patient. Various aspects may include an ester-based material adapted to be directly applied to the wound, such as a smooth muscle fistula, without substantially damaging tissue in the wound during dressing changes. The ester-based material may have an affinity for the wound bed surface and/or wound fluid. In addition, various aspects may include a device adapted to close the wound, such as a smooth muscle fistula.
1. A wound dressing adapted to be applied to a wound bed including a smooth muscle fistula in a negative pressure treatment system, the wound dressing comprising:
a wound-side layer adapted to be placed directly against the wound bed and to contact smooth muscle without causing substantial cellular disruption or damage in the negative pressure environment, the wound-side layer comprising an ester-based film having pores with a width of about 0.1 μm to about 50 μm;
an intermediate layer adjacent the wound-side layer and comprising a foam having pores the same size or larger than the pores of the ester-based film; and
an occlusive layer adjacent the intermediate layer and opposite the wound-side layer.
2. The wound dressing of claim 1 , wherein the ester-based film is impregnated with a chemical or compound to be applied to the wound bed.
3. The wound dressing of claim 1 , wherein the width of the pores of the ester-based film is from about 0.2 μm to about 2 μm.
4. The wound dressing of claim 1 , wherein the width of the pores of the ester-based film approximates the width of cells at the wound bed.
5. The wound dressing of claim 1 , wherein the width of the pores of the ester-based film approximates the width of cells of an exudate to be drawn from the wound bed.
6. A negative pressure treatment system adapted to treat a wound bed including a smooth muscle fistula, the negative pressure treatment system comprising:
a wound dressing comprising:
a wound-side layer adapted to be placed directly against the wound bed and to contact smooth muscle without causing substantial cellular disruption or damage in the negative pressure environment, the wound-side layer comprising an ester-based matcrial film having pores with a width of about 0.1 μm to about 50 μm; and
an intermediate layer adjacent the wound-side layer and comprising a foam having pores the same size or larger than the pores of the ester-based film; and
an occlusive layer adjacent the wound dressing opposite the wound bed; and
a vacuum pump configured to apply negative pressure to the wound dressing, thereby withdrawing wound fluid from the wound bed.
7. The negative pressure treatment system of claim 6 , wherein the ester-based film is impregnated with a chemical or compound to be applied to the wound bed.
8. The negative pressure treatment system of claim 6 , wherein the width of the pores of the ester-based film is from about 0.2 μm to about 2 μm.
9. The negative pressure treatment system of claim 6 , wherein the width of the pores of the ester-based film approximates at least one of the width of cells at the wound bed or the width of cells of an exudate to be drawn from the wound bed.