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    • 7. 发明专利
    • Improvements in or relating to devices for removing plaster casts or bandages
    • GB710356A
    • 1954-06-09
    • GB1595951
    • 1951-07-05
    • CHARLES GEORGE ALBERT KINGREGINALD JAMES NORRIS
    • A61F15/02
    • 710,356. Removing plastic bandages. KING, C. G. A., and NORRIS, R. J. July 7, 1952 [July 5, 1951], No. 15959/51. Class 81(2) A plaster bandage remover comprises an electrically driven chain saw. The motor M drives a sprocket 17 around which the saw 16 passes, the lower loop of the saw passing around a fixed guide member 18. The lower end of the saw is normally shielded by a slotted yoke 32 carried by tubular guide members 30, 31. Both guides 30, 31 are urged downwardly by coil springs 35, 36, guide 30 encloses a plunger rod 37, carrying a guiding foot 40, and guide 31 encloses a rod 49 carrying a presser member 51, both these latter rods being urged downwardly by springs 38, 50. In use, the guide 40 is inserted under the plaster with the presser member 51 on top, and a handle 42, pivoted at 43; is gripped so that, by means of an arm 44, engaging in a slot in rod 37, the whole mechanism is drawn downwards towards the guide 40. After the shield 32 has reached the top of the plaster the saw is projected downwards through the plaster until it reaches the guide 40. The whole appliance is then advanced to effect the desired cutting. Preferably the lower part 39 of. the rod 37 is of tapered cross-section to enable the appliance to be guided round curves if necessary. The guide member 40 is preferably covered with a layer of insulating material such as a synthetic resin.