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111. 发明专利

BR9707295A 未知
公开(公告)号：BR9707295A
公开(公告)日：1999-07-20
申请号：BR9707295
申请日：1997-01-16
申请人： ASTRA AB
发明人： ALBREKTSSON BJOERN , CARLSSON LARS , JACOBSSON MAGNUS , ROESTLUND TJORD , WENNBERG STIG
IPC分类号： A61B17/56 , A61B17/58 , A61B17/74 , A61B17/86 , A61C8/00 , A61F2/00 , A61F2/28 , A61F2/30 , A61F2/32 , A61F2/36
摘要： The invention relates to a fixture for insertion into and permanent anchorage in a cavity (32) formed in bone tissue. The fixture is made of a fixture member (2), which has an insertion end surface (10) and a cylindrical peripheral surface (6) provided with screw threads, and a plurality of circumferentially-spaced cutting recesses (9), which are formed in a forward, self-tapping end portion (7) of the threaded peripheral surface (6) adjacent to the insertion end surface (10) and which open axially into the insertion end surface (10). A plurality of circumferentially-spaced tissue-collecting and tissue-distributing grooves (17) are formed in a rear, non-self-tapping portion (8) of the threaded peripheral surface (6). The grooves (17) open radially outwards and extend at least partially in the longitudinal direction of the fixture member (2), and each groove (17) is, at a forward end thereof, connected to one of the cutting recesses (9) for collecting cut-off bone material (B) circumferentially around the inner wall of the cavity (32) during the insertion of the fixture.

112. 发明专利

DE69322508T2 未知
公开(公告)号：DE69322508T2
公开(公告)日：1999-07-08
申请号：DE69322508
申请日：1993-05-19
申请人： ASTRA AB
发明人： ALBREKTSSON BJOERN , CARLSSON LARS , JACOBSSON CARL , ROESTLUND TORD , WENNBERG STIG
IPC分类号： A61F2/38
摘要： PCT No. PCT/SE93/00451 Sec. 371 Date Dec. 14, 1994 Sec. 102(e) Date Dec. 14, 1994 PCT Filed May 19, 1993 PCT Pub. No. WO93/24079 PCT Pub. Date Dec. 9, 1993The invention relates to a joint prosthesis for permanent anchorage in the bone tissue of one of the articulatory parts of a joint in a human body, in particular the femur side of a knee joint, primarily intended to be fitted in one operation only. The prosthesis comprises an attachment part (1), intended to be anchored in the human bone tissue by means of a fixture (8), and an articulation element (2) adapted to fit the attachment part (1). The articulation element is attached to the attachment part by a combination of complementary shapes (27, 28, 33, 34) and snap-action locking means (31).

113. 发明专利

GR3029517T3 KNEE JOINT PROSTHESIS. 未知
公开(公告)号：GR3029517T3
公开(公告)日：1999-05-28
申请号：GR990400614
申请日：1999-02-26
申请人： ASTRA AB
发明人： ALBREKTSSON BJOERN , CARLSSON LARS VALTER , JACOBSSON CARL MAGNUS GOESTA , ROESTLUND TORD VALTER , WENNBERG STIG
IPC分类号： A61F2/38
摘要： PCT No. PCT/SE93/00451 Sec. 371 Date Dec. 14, 1994 Sec. 102(e) Date Dec. 14, 1994 PCT Filed May 19, 1993 PCT Pub. No. WO93/24079 PCT Pub. Date Dec. 9, 1993The invention relates to a joint prosthesis for permanent anchorage in the bone tissue of one of the articulatory parts of a joint in a human body, in particular the femur side of a knee joint, primarily intended to be fitted in one operation only. The prosthesis comprises an attachment part (1), intended to be anchored in the human bone tissue by means of a fixture (8), and an articulation element (2) adapted to fit the attachment part (1). The articulation element is attached to the attachment part by a combination of complementary shapes (27, 28, 33, 34) and snap-action locking means (31).

114. 发明专利

AU705390B2 Cutting guide instrument 未知
公开(公告)号：AU705390B2
公开(公告)日：1999-05-20
申请号：AU5783096
申请日：1996-04-17
申请人： ASTRA AB
发明人： ALBREKTSSON BJORN , CARLSSON LARS , JACOBSSON MAGNUS , ROSTLUND TORD , WENNBERG STIG
IPC分类号： A61B17/14 , A61B17/15 , A61B17/17 , A61B17/56 , A61F2/46
摘要： The invention relates to a cutting guide instrument and method for enabling high-precision resection of the head (caput femoris) (8) of the neck (5) of a human femur (collum femoris) at a predetermined cutting angle (alphac) to the femoral shaft (9) and on a predetermined cutting level (Lc) with respect to the proximal end of the caput (8). A support part (11) is fixed to the femur during the resection. A longitudinal guide carrier (12) is supported by the support part (11) and is aligned along the femoral collum (5) at said predetermined cutting angle (alphac) to the femoral shaft (9). A cutting guide (13) is supported by and movable along the axis (D-D) of the guide carrier (12) to a cutting position corresponding to the predetermined cutting level (Lc). The invention also relates to the use of the instrument for performing such resection.

115. 发明专利

GB2321598B Reamer 未知
公开(公告)号：GB2321598B
公开(公告)日：1999-04-28
申请号：GB9800981
申请日：1998-01-16
申请人： ASTRA AB
发明人： ALBREKTSSON BJOERN , CARLSSON LARS , JACOBSSON MAGNUS , ROESTLUND TORD , WENNBERG STIG
IPC分类号： A61B17/16
摘要： The invention is directed to a reamer for shaping a bone socket such as an acetabular cavity. The reamer comprises a cutting head for removing material from the socket during rotation of the cutting head. The cutting head comprises a number of relatively long main cutting edges, each of which extends in a direction from a base to a top of the reamer, and a number, higher than the number of main cutting edges, of relatively short peripheral cutting edges, which are located at the base and distributed at angulary spaced intervals about a rotational axis. The invention also provides a method for implanting a prosthesis component into a bone socket. During shaping of the bone socket, a top portion of the reamer is completely received in the bone socket to such an extent, that a cylindrical entrance portion is formed in the socket. The invention also provides a kit including a reamer and a prosthesis.

116. 发明专利

AT174205T 未知
公开(公告)号：AT174205T
公开(公告)日：1998-12-15
申请号：AT93913702
申请日：1993-05-19
申请人： ASTRA AB
发明人： ALBREKTSSON BJOERN , CARLSSON LARS VALTER , JACOBSSON CARL MAGNUS GOESTA , ROESTLUND TORD VALTER , WENNBERG STIG
IPC分类号： A61F2/38 , A61F2/30
摘要： PCT No. PCT/SE93/00451 Sec. 371 Date Dec. 14, 1994 Sec. 102(e) Date Dec. 14, 1994 PCT Filed May 19, 1993 PCT Pub. No. WO93/24079 PCT Pub. Date Dec. 9, 1993The invention relates to a joint prosthesis for permanent anchorage in the bone tissue of one of the articulatory parts of a joint in a human body, in particular the femur side of a knee joint, primarily intended to be fitted in one operation only. The prosthesis comprises an attachment part (1), intended to be anchored in the human bone tissue by means of a fixture (8), and an articulation element (2) adapted to fit the attachment part (1). The articulation element is attached to the attachment part by a combination of complementary shapes (27, 28, 33, 34) and snap-action locking means (31).

117. 发明专利

TR199801375T2 未知
公开(公告)号：TR199801375T2
公开(公告)日：1998-10-21
申请号：TR9801375
申请日：1997-01-16
申请人： ASTRA AB
发明人： ALBREKTSSON BJOERN , CARLSSON LARS , JACOBSSON MAGNUS , ROESTLUND TORD , WENNBERG STIG
IPC分类号： A61B17/56 , A61B17/58 , A61B17/74 , A61B17/86 , A61C8/00 , A61F2/00 , A61F2/28 , A61F2/30 , A61F2/32 , A61F2/36
摘要： The invention relates to a fixture for insertion into and permanent anchorage in a cavity (32) formed in bone tissue. The fixture is made of a fixture member (2), which has an insertion end surface (10) and a cylindrical peripheral surface (6) provided with screw threads, and a plurality of circumferentially-spaced cutting recesses (9), which are formed in a forward, self-tapping end portion (7) of the threaded peripheral surface (6) adjacent to the insertion end surface (10) and which open axially into the insertion end surface (10). A plurality of circumferentially-spaced tissue-collecting and tissue-distributing grooves (17) are formed in a rear, non-self-tapping portion (8) of the threaded peripheral surface (6). The grooves (17) open radially outwards and extend at least partially in the longitudinal direction of the fixture member (2), and each groove (17) is, at a forward end thereof, connected to one of the cutting recesses (9) for collecting cut-off bone material (B) circumferentially around the inner wall of the cavity (32) during the insertion of the fixture.

118. 发明专利

AU695430B2 Cup 未知
公开(公告)号：AU695430B2
公开(公告)日：1998-08-13
申请号：AU1394895
申请日：1994-12-21
申请人： ASTRA AB
发明人： ALBREKTSSON BJORN , CARLSSON LARS , JACOBSSON MAGNUS , ROSTLUND TORD , WENNBERG STIG
IPC分类号： A61B17/86 , A61F2/00 , A61F2/30 , A61F2/34 , A61F2/46
摘要： PCT No. PCT/SE94/01233 Sec. 371 Date Apr. 19, 1995 Sec. 102(e) Date Apr. 19, 1995 PCT Filed Dec. 21, 1994 PCT Pub. No. WO95/17140 PCT Pub. Date Jun. 29, 1995The invention relates to a cup-shaped member for a hip joint prosthesis, for implantation into a cavity in the bone tissue in the acetabulum, comprising an acetabular cup (1) made of metal a ceramic material or any other suitable material, preferably of titanium, the outside of said cup being rotationally symmetrical around a central axis of symmetry. The outer side of the cup (1), that is the side which is to face the bone tissue, is provided with at least one circumferential bead (5) close to the edge of the cup (1), said bead (5) having a barb-like shape in section and consequently allowing the cup (1) to be pushed into said cavity but counter-acting the removal of said cup (1) from said cavity, said outer side including said bead(s) (5) being provided with a rough structure serving as a file when said cup (1) is moved or rotated in said cavity.

119. 发明专利

GB2321598A Reamer 未知
公开(公告)号：GB2321598A
公开(公告)日：1998-08-05
申请号：GB9800981
申请日：1998-01-16
申请人： ASTRA AB
发明人： ALBREKTSSON BJOERN , CARLSSON LARS , JACOBSSON MAGNUS , ROESTLUND TORD , WENNBERG STIG
IPC分类号： A61B17/16
摘要： A reamer (10) for shaping a bone socket (50), such as an acetabular cavity, comprises cutting means for removing material from the socket during rotation of the cutting head. The cutting means comprises a number of relatively long main cutting edges, each of which extends in a direction from a base to a top of the reamer, and a number, higher than said number of main cutting edges, of relatively short peripheral cutting edges, which are located at the base and distributed at angulary spaced intervals about a rotational axis. During the shaping of the bone socket, a top portion of the reamer (10) is completely received in the bone socket (50) to such an extent, that a cylindrical entrance portion (52) is formed in the socket. The invention also provides a kit including a reamer and a prosthesis.

120. 发明专利

MX9708593A INSTRUMENTO DE GUIA DE PERFORACION. 未知
公开(公告)号：MX9708593A
公开(公告)日：1998-06-28
申请号：MX9708593
申请日：1997-11-07
申请人： ASTRA AB
发明人： ALBREKTSSON BJOERN , CARLSSON LARS , JACOBSSON MAGNUS , ROESTLUND TORD , WENNBERG STIG
IPC分类号： A61B17/56 , A61B17/17 , A61F2/46
摘要： La invencion se refiere a un instrumento guía para perforacion y un método para guiar una herramienta de perforacion (24) cuando se perfora un orificio longitudinal (4) a través del cuello (collum femoris) (5) de un fémur humano (9), después de la reseccion de la cabeza (caput) (8) del collum (5) a lo largo de un plano de corte (P). El instrumento comprende una guía de perforacion (20), la cual está provista con un miembro de base (21) y arreglada para guiar la herramienta de perforacion (24) a lo largo de un eje de perforacion (B-B) en relacion al miembro de base (21), el miembro de base (21) pretende ser aplicado contra la superficie extrema de corte (11) del collum (5) que define el plano de corte (P) para obtener una orientacion predeterminada del eje de perforacion (B-B) en relacion al plano de corte (P). Un miembro de colocacion (22) que se extiende desde la guía de perforacion (20) pretende ser puesto en contacto con la periferia de la porcion más estrecha (13) del collum (5) en al menos dos posiciones en contacto circunferencialmente separadas (30), para localizar el eje de perforacion (B-B) a una distancia mínima de la periferia de la porcion más estrecha (13) del collum (5). La invencion también se relaciona con el uso del instrumento para efectuar tal perforacion.

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