Surgery – Body protecting or restraining devices for patients or infants – Drapes
Patent
1997-09-18
1999-02-16
Brown, Michael A.
Surgery
Body protecting or restraining devices for patients or infants
Drapes
128856, A61B 1900
Patent
active
058710159
DESCRIPTION:
BRIEF SUMMARY
FIELD OF THE INVENTION
The present invention relates to a Mayo stand cover which includes a first and a second liquid-impermeable panel or side, wherein the panels are mutually joined along two opposing long edges and one side edge that extends between two opposing ends of said long edges, and wherein absorbent material is fastened to the outer surface of the first cover panel and extends over at least a part thereof.
BACKGROUND OF THE INVENTION
Mayo stands are used in surgical theatres to hold temporarily instruments and materials, such as bandages, dressings, swabs and surgical drapes used in surgery. These stands may include a table surface which is supported at one short end by an appropriately designed mounting. In order to prevent contamination of the table surface, a Mayo stand cover is fitted over the surface, so that one cover panel will be situated on top of the surface and the other beneath said surface. A layer of absorbent material is placed on the outer surface of the cover panel that lies on top of the table surface when the cover is in use. The absorbent layer is intended to prevent liquid, primarily blood, present on the instruments or the material used in surgery from running along the other panel or splashing down onto the floor. When surgery is completed, the stand cover is used as a trash bag into which disposable material is stowed as the cover is removed and turned inside out in the process, so that the then inwardly facing surfaces of the cover will now face outwards.
Mayo stand covers are normally made of plastic material. One problem encountered with thin plastic covers is that the cover panels tend to stick together, therewith making opening of the covers difficult. Besides the obvious solution of using thicker plastic materials, the problem has been solved by providing the plastic layers with patterns of small homogenous plastic or glass beads which are admixed with the plastic compound prior to extrusion. In addition to making manufacture of the covers more difficult and more expensive, this solution has the drawback that the homogenous beads spread radiation when sterilizing the covers by radiation, so as to require a high radiation dose in order to achieve effective sterilization. Another problem with thin covers is that the cover panels are easily penetrated by sharp instruments that are dropped onto the covered table surface during surgery.
SUMMARY OF THE INVENTION
The object of the present invention is to provide a thin-walled Mayo stand cover which can be opened and fitted over the table surface easily, and with which the risk of the cover being penetrated by sharp instruments for instance is relatively small.
This object is achieved with a Mayo stand cover of the kind defined in the introduction which is characterized in that the first cover panel has formed therein a pattern of projections which extend out from the inside of said panel, wherein the pattern at least includes at least two discrete rows of projections which extend along the full length of the cover parallel with its long edges. This pattern of projections greatly reduces adhesion between the mutually opposing surfaces of the cover panels, therewith enabling the cover to be opened and fitted onto a Mayo stand easily. The projections also distance the cover panel from the table surface and impart a certain degree of suppleness to said panel, which in combination greatly reduces the risk of penetration. These factors also impart a sound-damping property to the stand cover.
In one preferred embodiment, the first cover panel includes a regular pattern of projections which extends over the whole of the panel. In a preferred variant, the second cover panel also includes a regular pattern of projections which extends over the whole of said panel, and the panels are made of mutually the same liquid-impermeable material. The liquid-impermeable material is conveniently comprised of polyethylene of linear low density. The absorbent material extends over at least a third of the outer surface of the first panel a
REFERENCES:
patent: 3335719 (1967-08-01), Boucher
patent: 3747655 (1973-07-01), Hadtke
patent: 5151314 (1992-09-01), Brown
patent: 5170804 (1992-12-01), Glassman
patent: 5411036 (1995-05-01), Wilkes
Billgren Tomas
Lofgren Kristina
Brown Michael A.
Molnlycke Health Care AB
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