Compression element
A venous compression element is provided which is useful in the treatment of chronic venous insufficiency, such as varicose veins. The compression element comprises a central core of fluid filled cells and an outer layer of soft material suitable for maintaining contact with skin for a prolonged period of time and which covers the core. A particular embodiment comprises a folded or rolled cylindrical core of air or nitrogen filled bubble wrap sheet material covered by a skin compatible bandaging material. The compression elements described are particularly useful in providing consistent compression to a blood vessel after endovenous endothelial wall damaging techniques.
1. A venous compression element comprising:
at least one central core element formed of laminate material encapsulating a plurality of discrete fluid filled cells between two or more layers of the laminate material cylindrically folded or rolled upon itself and covered with one or more tubular bandages so that the central core element is in contact with at least one of the tubular bandages, wherein an outer portion of the one or more tubular bandages is configured to be placed at discrete locations against a patient's skin to provide compression; and
an outer layer of soft material suitable for maintaining contact with skin for a prolonged period of time covering the at least one core element.
2. A venous compression element as claimed in claim 1 wherein the core comprises gas filled cells.
3. A venous compression element as claimed in claim 2 wherein the gas is air or nitrogen.
4. A venous compression element as claimed in claim 1 in that the core is arranged as a cylindrically formed contiguous body of air filled plastics cells.
5. A venous compression element as claimed in claim 1 wherein the core is a sheet of cellular bubble encapsulating material, comprising regularly spaced, protruding hemispheres with a fixed amount of fluid.
6. A venous compression element as claimed in claim 5 wherein the sheet is a rectangle of between 20 and 50 cms length.
7. A venous compression element as claimed in claim 5 wherein the sheet is folded or rolled upon itself with a bubble projection surface facing radially inward and a flat base layer facing radially outward.
8. A venous compression element as claimed in claim 5 wherein the cylinder so formed is of 10 to 50 mm diameter.
9. A venous compression element as claimed in claim 8 wherein the cylinder is of 20 to 40 mm diameter.
10. A venous compression element as claimed in claim 1 wherein the laminate material encapsulating fluid filled cells is a bubble wrap sheet material comprising a bubble projection surface and a base layer.
11. A venous compression element as claimed in claim 10 wherein the sheet material has a cell diameter, as measured on the base layer, of between 6 and 14 mm.
12. A venous compression element as claimed in claim 10 wherein the sheet material has a cell diameter of from 9 to 11 mm.
13. A venous compression element as claimed in claim 12 wherein the sheet is a double layered plastics which provides improved resistance to loss of gas pressure.
14. A venous compression element as claimed in claim 1 adapted to treat varicose veins in a patient in need thereof, wherein the compression element is configured to be applied to the skin surface and aligned with a vein after performance of an endovenous endothethial wall damaging technique.
15. A venous compression element as claimed in claim 1 wherein the compression element is adapted to provide essentially complete resistance to crushing at 0-50 mm/Hg and 0 to 0.1 atmospheres for a one to two week interval over which it is applied to a patient.
16. A venous compression element as claimed in claim 1 wherein the compression element is in the form of a compression pad.