摘要:
An expanding implant (600) for insertion between first and second regions of hard tissue, the implant comprising: (a) a backbone (630) having a surface for contacting the first region of hard tissue, said backbone comprising a proximal portion (688a) and a distal portion (688b), said backbone assuming an initial length and being shortened towards a second length by relative movement of said proximal portion and said distal portion; (b) a first segment (640c) hingedly connected to a distal region of said distal portion (688b) of said backbone; (c) a second segment (640a) hingedly connected to a proximal region of said proximal portion (688a) of said backbone; and (d) an intermediate segment (640b) having a surface for contacting the second region of hard tissue, said intermediate segment being hingedly connected to said first segment and to said second segment such that shortening of said backbone from said initial length towards said second length causes an increase in a distance between said surfaces of said backbone and said intermediate segment, and wherein said intermediate segment and said backbone are each formed with openings (623) through said respective surfaces, said openings providing at least one unobstructed path between the first and second regions of hard tissue.
摘要:
A system for implanting an inter-body device between adjacent vertebrae comprises an inter-body device having a plurality of cans secured to a flexible bridge and having a relief portion therebetween. An inserter tube and complementary bullnoses are advantageously secured to the vertebrae by an extension arm for securing the assembly precisely in place. A plurality of articulating trial implants are provided to test fit a disc space for the proper sized inter-body device.
摘要:
A system for implanting an inter-body device between adjacent vertebrae comprises an inter-body device having a plurality of cans secured to a flexible bridge and having a relief portion therebetween. An inserter tube and complementary bullnoses are advantageously secured to the vertebrae by an extension arm for securing the assembly precisely in place. A plurality of articulating trial implants are provided to test fit a disc space for the proper sized inter-body device.
摘要:
A system for implanting an inter-body device between adjacent vertebrae comprises an inter-body device having a plurality of cans secured to a flexible bridge and having a relief portion therebetween. An inserter tube and complementary bullnoses are advantageously secured to the vertebrae by an extension arm for securing the assembly precisely in place. A plurality of articulating trial implants are provided to test fit a disc space for the proper sized inter-body device.
摘要:
A system for implanting an inter-body device between adjacent vertebrae comprises an inter-body device having a plurality of cans secured to a flexible bridge and having a relief portion therebetween. An inserter tube and complementary bullnoses are advantageously secured to the vertebrae by an extension arm for securing the assembly precisely in place. A plurality of articulating trial implants are provided to test fit a disc space for the proper sized inter-body device.
摘要:
An expanding implant (600) for insertion between first and second regions of hard tissue, the implant comprising: (a) a backbone (630) having a surface for contacting the first region of hard tissue, said backbone comprising a proximal portion (688a) and a distal portion (688b), said backbone assuming an initial length and being shortened towards a second length by relative movement of said proximal portion and said distal portion; (b) a first segment (640c) hingedly connected to a distal region of said distal portion (688b) of said backbone; (c) a second segment (640a) hingedly connected to a proximal region of said proximal portion (688a) of said backbone; and (d) an intermediate segment (640b) having a surface for contacting the second region of hard tissue, said intermediate segment being hingedly connected to said first segment and to said second segment such that shortening of said backbone from said initial length towards said second length causes an increase in a distance between said surfaces of said backbone and said intermediate segment, and wherein said intermediate segment and said backbone are each formed with openings (623) through said respective surfaces, said openings providing at least one unobstructed path between the first and second regions of hard tissue.
摘要:
An inserter for locating and impacting an acetabular cup which has an inner bearing surface in a prepared acetabulum, comprising a handle carrying an anvil, an impaction head adapted to receive said cup and retention means for attaching said cup to the inserter extending between actuating means in the handle and the impaction head and in which said actuating means are operable to free the retention means from the cup by impacting the anvil.