公开(公告)号：EP1007116A1

公开(公告)日：2000-06-14

申请号：EP97953150.6

申请日：1997-12-15

申请人： BIO-PLEXUS, INC.

发明人： BURZYNSKI, Mark, J. ,  JONES, Alexander, K. ,  KEARNS, Richard, S. ,  POLIDORO, John, M. ,  SAHI, Carl, R. ,  SMUTNEY, Chad, C.

IPC分类号： A61M5/178

CPC分类号： A61M25/0643 ,  A61M5/3243 ,  A61M2005/3212

摘要： A self-blunting needle medical device comprises a needle cannula (18) fixed to a hub (20) having a receiving structure therein such as ferrule (22) and a movable blunting member (14) movably received within the cannula (18). Ferrule (22) defines a sleeve bore (38) extending therethrough, within which both the cannula (18) and the movable member (14) can be received and which establishes a coaxial relationship between them. The ferrule (22) defines a first guide surface (40) for directing the blunting end (14a) of the movable member (14) into the central bore of the cannula (18) during assembly. A second guide surface (42) performs the function of guiding the proximal end (18b) of the cannula (18) into ferrule (22) for mounting therein. Typically, the cannula (18) has a tissue puncture tip (18a). When the movable member (14) is retracted into the cannula (18), the puncture tip (18a) is exposed for use, e.g., injection into tissue. The movable member (14) is then moved to an extended position in which blunting end (14a) projects beyond the puncture tip (18a), to render the device safe with regard to subsequent accidental needle sticks.

公开(公告)号：EP1011757B1

公开(公告)日：2005-01-12

申请号：EP98912893.9

申请日：1998-03-23

申请人： BIO-PLEXUS, INC.

发明人： POLIDORO, John, M. ,  HOLDAWAY, Richard, G. ,  SMUTNEY, Chad, C. ,  SAHI, Carl, R. ,  KEARNS, Richard, S. ,  SEIFERT, Kevin, J. ,  BIANCARDI, Gregory, F.

IPC分类号： A61M5/00 ,  A61M5/32

CPC分类号： A61M25/0643 ,  A61M5/3257 ,  A61M5/3271 ,  A61M5/3272 ,  A61M25/0637 ,  A61M2005/3212

摘要： A novel self-blunting needle apparatus (10d) employs a blunting member (70) and a needle (12). The blunting member (70) may be disposed within the needle (12) and may be adapted for fluid flow therethrough. The needle (12) may then be inserted into a patient's tissue and the blunting member (70) may be extended to blunt the apparatus. In other embodiments, e.g., apparatus (10), a driver (76) may be employed to move the blunting member (70) without obstructing fluid flow. There may be a locking spline (58) and cam channel (30) configuration to prevent backward motion of the blunting member (70) in various embodiments. A hollow body (22) is configured to facilitate assembly.

公开(公告)号：EP1011757A1

公开(公告)日：2000-06-28

申请号：EP98912893.9

申请日：1998-03-23

申请人： BIO-PLEXUS, INC.

发明人： POLIDORO, John, M. ,  HOLDAWAY, Richard, G. ,  SMUTNEY, Chad, C. ,  SAHI, Carl, R. ,  KEARNS, Richard, S. ,  SEIFERT, Kevin, J. ,  BIANCARDI, Gregory, F.

IPC分类号： A61M5/00 ,  A61M5/32

CPC分类号： A61M25/0643 ,  A61M5/3257 ,  A61M5/3271 ,  A61M5/3272 ,  A61M25/0637 ,  A61M2005/3212

摘要： A novel self-blunting needle apparatus (10d) employs a blunting member (70) and a needle (12). The blunting member (70) may be disposed within the needle (12) and may be adapted for fluid flow therethrough. The needle (12) may then be inserted into a patient's tissue and the blunting member (70) may be extended to blunt the apparatus. In other embodiments, e.g., apparatus (10), a driver (76) may be employed to move the blunting member (70) without obstructing fluid flow. There may be a locking spline (58) and cam channel (30) configuration to prevent backward motion of the blunting member (70) in various embodiments. A hollow body (22) is configured to facilitate assembly.