Abstract: A pipe clamp which includes an open band of metal, a pair of opposed flanges located at the open ends of the band, and a tightening mechanism for drawing the flanges together. Each flange extends radially from a body portion of the band to a loop formed by a portion of the band material folded back onto itself. The flanges each have an aperture at a location intermediate the loop and the body portion to accept a fastener for tightening of the band. The loops are disposed adjacent each other such that the flanges are separated by a gap that is greater at the apertures than at the loops. One or both of the flanges can have a slot that extends into the body portion of the band so that the slotted flange comprises two flange portions that can be tightened somewhat independently of each other.

Abstract: A pipe clamp which includes an open band of metal, a pair of opposed flanges located at the open ends of the band, and a tightening mechanism for drawing the flanges together. Each flange extends radially from a body portion of the band to a loop formed by a portion of the band material folded back onto itself. The flanges each have an aperture at a location intermediate the loop and the body portion to accept a fastener for tightening of the band. The loops are disposed adjacent each other such that the flanges are separated by a gap that is greater at the apertures than at the loops. One or both of the flanges can have a slot that extends into the body portion of the band so that the slotted flange comprises two flange portions that can be tightened somewhat independently of each other.

Abstract: A centralizer (1) is provided with a hollow body (2) and a plurality of equally spaced arms (4). The arms (4) extend in the form of cup handles from the hollow body (2). Each arm (4) has a variable cross-section along its length with the cross-section becoming increasingly ovoid towards one end of the arm (4).

Abstract: An extraction device (10,110) for removing a socket bearing insert (12) from an acetabular cup (14) in an acetabular prosthesis in which an extracting member (30, 130) is adapted for attachment to a groove (20) in the insert (12). The extraction device (10, 110) includes a support in the form of a sleeve (38, 138) which bears against the rim of the acetabular cup (14). The extraction device (10, 110) has means for providing an axial force exclusively between the extracting member (30, 130) and the support such that no force is transmitted to a bone to which the acetabular cup (14) is attached.

Abstract: An extraction device (10,110) for removing a socket bearing insert (12) from an acetabular cup (14) in an acetabular prosthesis in which an extracting member (30, 130) is adapted for attachment to a groove (20) in the insert (12). The extraction device (10, 110) includes a support in the form of a sleeve (38, 138) which bears against the rim of the acetabular cup (14). The extraction device (10, 110) has means for providing an axial force exclusively between the extracting member (30, 130) and the support such that no force is transmitted to a bone to which the acetabular cup (14) is attached.