Lead up-sizing sleeve

Abstract

An improved connection system for coupling a device such as a pacemaker, cardioverter, defibrillator, nerve stimulator, muscle stimulator, implantable monitor or other medical device to a medical lead is disclosed. The connection system includes a coupling member designed to couple to the proximal end of the lead. This coupling member, which includes an inner lumen sized to form a press fit around the proximal end of the lead body, may be of a generally tubular construction. This coupling member includes connector means to enable a connector pin at the proximal end of the lead to mechanically and electrically couple to a device. The connector means may further include means for coupling both mechanically and electrically to a ring connector on the proximal end of a multi-polar lead. An insertion member may also be provided to allow the lead to be more easily inserted within the inner lumen of the coupling member.

1 . A medical electrical lead connector arrangement, comprising: 
 a non-cylindrically shaped connector pin coupled to a lead conductor and including a tip having a threaded surface for coupling with a threaded pull wire; and    a connector assembly adapted to receive the non-cylindrically shaped connector pin into a first end of a bore of the assembly, the connector assembly including a pull wire insertion site positioned in proximity to a second end of the assembly bore and an insert mounted within the assembly bore and having an axial bore formed therein that complements the shape of the connector pin;    wherein the connector assembly is adapted to couple the lead connector pin to an implantable medical device when the pin is received within the insert of the connector assembly.    
   
   
       2 . The lead connector arrangement of  claim 1 , wherein the non-cylindrically shaped connector pin comprises at least one planar surface.  
   
   
       3 . The lead connector arrangement of  claim 1 , wherein the non-cylindrically shaped connector pin comprises a polygonal shaped connector pin.  
   
   
       4 . The lead connector arrangement of  claim 3 , wherein the polygonal shaped connector pin comprises at least one of a triangular, square, rectangular, and hexagonal shaped connector pin.  
   
   
       5 . The lead connector arrangement of  claim 4 , wherein the axial bore comprises a polygonal shape that complements the shape of the polygonal shaped connector pin to reduce axial rotation of the connector pin within the axial bore of the insert.  
   
   
       6 . The lead connector arrangement of  claim 4 , wherein the axial bore comprises at least one of a triangular, square, rectangular, and hexagonal shape that complements the shape of the at least one of a triangular, square, rectangular, and hexagonal shaped connector pin to reduce axial rotation of the connector pin within the axial bore of the insert.  
   
   
       7 . The lead connector arrangement of  claim 1 , wherein the connector pin comprises an inner threaded recess within a tip of the connector pin for coupling to a threaded pull tool, and wherein the pull tool is screwed into the inner threaded recess of the connector pin and the connector pin is pulled through the connector sleeve assembly until it is inserted within the axial bore of the insert.  
   
   
       8 . The lead connector arrangement of  claim 1 , wherein the lead connector arrangement couples the lead conductor to an implantable medical device.