Pacemaker connector block for proximal ring electrode

A pacemaker connector block assembly for use with an implantable pacemaker and an implantable bipolar pacemaker lead;

• said bipolar pacemaker lead having a proximal end that includes at least two spaced-apart electrodes, a first of which is substantially non-deformable when subjected to a holding force, and a second of which is easily deformable when subjected to a holding force of the same magnitude as that applied to the first electrode, said pacemaker having electrical circuits therein to which the first and second proximal electrodes are to be electrically connected, said connector block assembly comprising:
• a receiving channel for receiving the proximal end of said bipolar pacemaker lead, including said first and second spaced-apart electrodes;
• first contact means within said receiving channel for applying a first holding force to said first electrode and for maintaining electrical contact therewith;
• second contact means within said receiving channel for applying a second holding force to said second electrode and for maintaining electrical contact therewith, said second contact means including force limiting means internal to said connector block assembly for limiting the amount of the second holding force that can be applied to said second electrode to a value that prevents deformation of said second electrode;
• means for electrically connecting said first and second contact means with the electrical circuits within said pacemaker;
• and
• sealing means for preventing body fluids from contacting said first and second contact means when the proximal end of said bipolar pacemaker lead is inserted into said receiving channel;
• whereby the proximal end of said bipolar pacing lead may be removably and sealably inserted into said connector block assembly.