Surgical wound dressing

Abstract

A wound dressing system includes a fluid permeable support member for positioning within a wound and adapted to generally conform to a topography of a wound, a plurality of beads supported by the support member, an outer member for positioning over the wound to substantially enclose the beads and a conduit for supplying reduced pressure to the wound. The support member is adapted to permit exudates from the wound to pass therethrough. The beads are characterized by having sufficient rigidity to substantially maintain respective shapes thereof to thereby facilitate passage of the exudates through spaces or passages defined between adjacent beads. The beads may comprise glass, an acrylic or a polymeric material. The support member may comprise a polymeric or fabric material. The support member may be an enclosure member or pouch which houses the beads. Multiple pouches are also envisioned.

Description

BRIEF DESCRIPTION OF THE DRAWINGS

Various embodiments of the wound dressing system of the present disclosure are described herein with reference to the drawings wherein:

FIG. 1 is a side view of the wound dressing system of the present disclosure illustrating the wound dressing and negative pressure source;

FIG. 2 is a side cross-sectional view of one embodiment of a bead for use with the wound dressing of the system of FIG. 1;

FIG. 3 is a side cross-sectional view of another embodiment of a bead for use with the wound dressing of the system of FIG. 1;

FIG. 4 is a graphical representation of negative or pump set pressure as a function of time for the wound dressing of the system of FIG. 1 and a prior art dressing with foam;

FIGS. 5A and 5B are graphical representations of negative pressure levels taken at any point through the thickness of the dressing for the wound dressing of the system of FIG. 1 and prior art gauze and foam dressings;

FIG. 6 is a graphical representation of the pressure profile at a wound site for a dry wound for the wound dressing of the system of FIG. 1 and a prior art foam dressing;

FIG. 7 is a graphical representation of the pressure profile at wound site for a wet wound for the wound dressing of the system of FIG. 1 and a prior art foam dressing;

FIGS. 8A and 8B are graphical representations of vacuum levels for a tunneling wound dressing of the system of FIG. 1 and a prior art foam dressing;

FIG. 9 is a graphical illustration illustrating vacuum levels vs. time for large and small beads used with the wound dressing of the system of FIG. 1;

FIG. 10 is a side view of an alternative embodiment of the wound dressing of the system of FIG. 1, incorporating a support member in the form of an enclosure member for accommodating the beads;

FIG. 11 is a side view of another alternative embodiment of the wound dressing of the system of FIG. 1, illustrating a plurality of enclosure members for accommodating the beads;

FIG. 12 is a view of an alternate embodiment of the system of FIG. 1, illustrating the beads of the wound dressing attached along an interconnecting member;

FIG. 13 is a view of another embodiment of the system of FIG. 1 illustrated positioned within the wound bed;

FIGS. 14 and 15 are top and side views respectively of the support sheet of the system of FIG. 13 illustrating the beads mounted to the support sheet; and

FIG. 16 is a view of yet another embodiment of the system of FIG. 1 incorporating a lattice frame matrix within the wound dressing.

Claims

1. A wound dressing system, which comprises: a fluid permeable support member, the support member configured for positioning within a wound and adapted to generally conform to a topography of a wound, and to permit exudates from the wound to pass therethrough;a plurality of beads supported by the support member, the beads having sufficient rigidity to substantially maintain respective shapes thereof to thereby facilitate passage of the exudates through spaces defined between adjacent beads;an outer member adapted for positioning over the wound to substantially enclose the beads; anda conduit for supplying reduced pressure to the wound.

2. The wound dressing system according to claim 1 wherein the beads comprise glass.

3. The wound dressing system according to claim 1 wherein the beads comprise an acrylic.

4. The wound dressing system according to claim 1 wherein the beads comprise a polymeric material.

5. The wound dressing system according to claim 1 wherein at least some of the beads each comprise an outer layer of medicament.

6. The wound dressing system according to claim 1 wherein at least some of the beads each include a bore therethrough to permit passage of exudates.

7. The wound dressing system according to claim 6 wherein the beads having the bores each include a medicament disposed within the bore.

8. The wound dressing system according to claim 1 wherein the beads are connected along an elongated member.

9. The wound dressing system according to claim 1 wherein the beads are mounted to the support member.

10. The wound dressing system according to claim 1 wherein the support member comprises a fabric material.

11. The wound dressing system according to claim 1 wherein the support member comprises a polymeric material.

12. The wound dressing system according to claim 1 wherein the outer member is adapted to form a substantially liquid-tight seal about the wound.

13. The wound dressing system according to claim 12 wherein the outer member comprises a semi-permeable material.

14. The wound dressing system according to claim 1 further comprising a negative pressure source in fluid communication with the conduit.

15. The wound dressing system according to claim 1 wherein the negative pressure source includes a vacuum pump.

16. The wound dressing system according to claim 1 wherein the support member is a pouch, the pouch housing the beads.

17. A wound dressing system, which comprises: a fluid permeable enclosure pouch, the enclosure pouch configured for positioning within a wound and adapted to permit exudates from the wound to pass therethrough;a plurality of beads disposed within the enclosure pouch, the beads having sufficient rigidity to substantially maintain respective shapes thereof to thereby facilitate passage of the exudates through spaces defined between adjacent beads;an outer member adapted for positioning over the wound to substantially enclose the beads; andnegative pressure means for supplying reduced pressure to the wound.

18. A wound dressing system, which comprises: a frame dimensioned for positioning within a wound bed, the frame including a series of interconnected walls defining spaced cells, the cells having sufficient rigidity to substantially maintain their original configurations in the presence of reduced pressure and being dimensioned to permit passage of wound exudates therethrough; anda conduit for supplying reduced pressure to the wound bed.

19. The wound dressing device according to claim 18 wherein at least one of the cells define a substantially polygonal shape.

20. The wound dressing system according to claim 18 wherein the frame comprises silicon.