this purpose is a heat sealable 3 mil polyolefin such as saranex u00ae film 2090 by the dow chemical co in a flat layout sleeve 18 is constructed of congruent top and bottom panels 18a and 18b respectively defining a rounded distal section 18c a straight intermediate section 18d and a tapered proximal section 18e panels 18a and 18b are heat sealed together along a perimetric seam s 1 of section 18c and along the opposite sides of sections 18d and 18e the proximal edge of tapered section 18e is heat sealed by a seam s 2 around an inflatable cuff 20 which is sealingly compressed in a toroidal shape around the surgeon 39 s arm by a hand operated elastic bulb inflator 22 to provide the second sealing means around the entry opening 23a of the proximal end of the sleeve 18 a tab 23 extending from the proximal end of cuff 20 provides a convenient grip for pulling the cuff over the hand and arm a lateral exit opening 24 is centrally located in rounded section 18c of bottom panel 18b and is sized to permit a surgeon 39 s hand to pass into wound w an annular flange 26 of like material as sleeve 18 is heat sealed to the exposed side of bottom panel 18b by a seam s 3 around exit opening 24 a suitable adhesive 28 fig4 on the lower exposed side of flange 26.