Abstract: A flatus filter for attachment in a folded position over the edge of a stoma bag to cover opposed perforations in each of the two external walls of the stoma bag, comprising a gas-permeable pad containing an odor-absorbent substance affixed to one side of an elongate web, with at least a portion of the edges of the pad being exposed and/or with a portion of a major surface of the pad being exposed through one or more perforations in the said web adjacent to the pad, and with at least a portion of the side of the pad remote from the said web being exposed, or covered only by a removable protective backing sheet, and with that part of the filter surrounding the last-mentioned exposed portion being provided with an adhesive coating for attachment of the filter to a stoma bag.

Abstract: Surgical instrument for applying tension to a metal cable secured to the spine in an operation for the correction of scoliosis.

Abstract: Surgical implant, known as a double-hole spinal staple for use in securing metal cables to vertebrae in operations for the correction of scoliosis.

Abstract: Surgical implant, known as a sacral anchor, for use in securing a cable to the sacrum in carrying out an operation for the correction of scoliosis.

Abstract: Surgical implant, known as a spinal screw and nut, for use in securing a metal cable to a vertebrae in an operation for the correction of scoliosis.

Abstract: An elbow prosthesis comprising a humeral member and an ulnar member, in which each member comprises a joint portion for forming the joint of the prosthesis and an implant portion for implantation into the bone, the joint portion of the humeral member being capable of being received by the joint portion of the ulnar member in snap-fit engagement, while permitting the humeral member to pivot relative to the ulnar member.