Abstract: A plunger for use in manufacturing glass containers comprises a first portion configured for contact with a gob of molten glass, and a second portion. At least the first portion has a metal coating of a self-fluxing Fe-based alloy and with a microhardness between 300 HV0.3 and 900 HV0.3. The Fe-based alloy comprises in wt. %): C, 0.5-2.5; Si, 1.0-4.0; B, 1.5-6.0; Cr, 15.0-30.0; Ni, 0-5.0; Co, 15.0-40.0; W, 1.2-5.0; Mo, 0-5.0; Cu, 0-5.0; P, 0-3.0; and N, 0-1.0. The Fe-based alloy may further comprise metals selected from Al, Mn, Nb, S, Ti, V, Zn And Zr each in an individual amount that ranges from 0.01 wt. % to about 2 wt. %, with the overall content of the additional metals less than 10 wt. %.

Abstract: Surgical device (1) is for use in minimally invasive surgery using an inflated body cavity (2) accessible to a surgeon through an access port defined by a sleeve (4) passing through an incision in a patient's abdominal wall (3). The device is held in position by a distal ring (5) and a proximal ring (6). An incision engaging bladder (10) provides a first seal for engaging and retracting the incision when inflated. A second seal is provided by a self engaging bladder (12) for sealing the sleeve (4).

Abstract: Surgical device (1) is used fir in minimally invasive surgery using an inflated body cavity (2) accessible to a surgeon through an access port defined by a sleeve (4) passing through an incision in a patient's abdominal wall (3). The device is held in position by a distal ring (5) and a proximal ring (6). The device (1) is sealed by cuff valve (8), self sealing valve (18), spring valve (28) or snap open/snap shut valve (38).

Abstract: Surgical device (1) is for use in minimally invasive surgery using an inflated body cavity (2) accessible to a surgeon through an access port defined by a sleeve (4) passing through an incision in a patient's abdominal wall (3). The device is held in position by a distal ring (5) and a proximal ring (6). The device (1) is sealed by cuff valve (8), self sealing valve (18), spring valve (28) or snap open/snap shut valve (38).