Active medical device having a terminal housing assembly connected to a printed circuit board assembly without an intermediate feedthrough

An active medical device (AMD) system, comprising:

• a) an implantable lead extending from a lead proximal end having at least two spaced-apart first and second electrical contacts to a distal electrode that is configured for contact with body tissue;
• b) active medical device (AMD), comprising:
• i) a device housing, comprising:
• A) a main housing comprising a housing sidewall extending to a main housing annular edge surrounding a housing opening leading into an interior of the main housing;
• and
• B) an end cap comprising an end cap sidewall extending to an end cap annular edge surrounding an end cap main opening leading into an interior of the end cap, the end cap annular edge aligned along an imaginary plane, wherein an end cap lead opening in the end cap sidewall is aligned with an end cap lead opening axis that extends through the interior of the end cap to intersect the imaginary plane, and an end cap lateral opening in the end cap sidewall is aligned with an end cap lateral opening axis that intersects the end cap lead opening axis, and wherein the end cap annular edge is connected to the main housing annular edge to close the device housing;
• and
• ii) a printed circuit board (PCB) at least partially housed inside the device housing and supporting an x number of electrical contacts connected to a respective one of a y number of electronic components, wherein the x number of electrical contacts and the y number of electronic components are at least 2;
• iii) an electrical power source housed inside the device housing to power the y number of electronic components;
• iv) a metallic sleeve having a sleeve lumen extending along a sleeve axis from a sleeve proximal end having a sleeve proximal opening to a sleeve distal end having a sleeve distal opening, wherein the sleeve proximal end is connected to an inner surface of the end cap so that the sleeve proximal opening coincides with the end cap lead opening and so that the sleeve axis is aligned with the end cap lead opening axis, and wherein the sleeve has a sleeve lateral opening that intersects the sleeve lumen;
• v) a terminal plate;
• vi) a terminal housing assembly having an m number of insulator rings connected to an n number of terminal housings in an alternating sequence extending distally from the sleeve distal end, the alternating sequence comprising a first of the m number of insulator rings connected to the sleeve distal end, a first of the n number of terminal housings connected to the first of the m number of insulator rings, a second of the m number of insulator rings connected to the first of the n number of terminal housings, a second of the n number of terminal housings connected to the second of the m number of insulator rings continuing distally to a distal-most one of the n number of terminal housings connected distally to a distal-most one of the m number of insulator rings, and the terminal plate is connected to the distal-most one of the n number of terminal housings opposite the distal-most one of the m number of insulator rings to thereby provide the terminal housing assembly extending distally outwardly beyond the imaginary plane at the end cap annular edge and having a central lumen of the terminal housing assembly extending along a central axis aligned with the sleeve and the end cap lead opening axes, wherein the m number of insulator rings and the n number of terminal housings range from 3 to 24, and wherein the m number of insulator rings support respective polymeric ring seals, and the n number of terminal housings support respective metallic canted coil springs;
• and
• vii) an o number of jumper wires directly connecting a respective one of the n number of terminal housings to a respective one of the x number of electrical contacts supported on the PCB,
• c) wherein the end cap lead opening in the end cap sidewall is configured to receive the proximal end of the lead moved into the central lumen of the terminal housing assembly so that when the first and second lead contacts at the lead proximal end are in electrical continuity with the canted coil springs of the respective first, second and the distal-most one of the n number of terminal housings, electrical continuity is established from the distal electrode of the lead to the canted coil springs of respective ones of the n number of terminal housings and to respective ones of the o number of jumper wires connected to respective ones of the x number of electrical contacts connected to respective ones of the y number of electronic components supported on the PCB, and
• d) wherein the lead is configured to at least one of deliver electrical stimulation to body tissue or sense biological signals from body tissue.

An active medical device (AMD), comprising:

• a) a device housing, comprising:
• i) a main housing comprising a housing sidewall extending to a main housing annular edge surrounding a housing opening leading into an interior of the main housing;
• and
• ii) an end cap comprising an end cap sidewall extending to an end cap annular edge surrounding an end cap main opening leading into an interior of the end cap, the end cap annular edge aligned along an imaginary plane, wherein an end cap lead opening in the end cap sidewall is aligned with an end cap lead opening axis that extends through the interior of the end cap to intersect the imaginary plane, and an end cap lateral opening in the end cap sidewall is aligned with an end cap lateral opening axis that intersects the end cap lead opening axis, and wherein the end cap annular edge is connected to the main housing annular edge to close the device housing;
• and
• b) a printed circuit board (PCB) at least partially housed inside the device housing and supporting at least a first and a first+x number of electrical contacts connected to respective ones of a first and a first+y number of electronic components, wherein the first and the first+x number of electrical contacts and the first and the first+y number of electronic components are at least 2;
• c) an electrical power source housed inside the device housing to power at least the first and the first+y number of electronic components;
• d) a metallic sleeve having a sleeve lumen extending along a sleeve axis from a sleeve proximal end having a sleeve proximal opening to a sleeve distal end having a sleeve distal opening, wherein the sleeve proximal end is connected to an inner surface of the end cap so that the sleeve proximal opening coincides with the end cap lead opening and so that the sleeve axis is aligned with the lead opening axis, and wherein the sleeve has a sleeve lateral opening that intersects the sleeve lumen;
• e) a terminal plate;
• f) a terminal housing assembly having an m number of insulator rings connected to an n number of terminal housings in an alternating sequence extending distally from the sleeve distal end, wherein the alternating sequence comprises a first of the m number of insulator rings connected to the sleeve distal end, a first of the n number of terminal housings connected to the first of the m number of insulator rings, a first+1 of the m number of insulator rings connected to the first of the n number of terminal housings, a first+1 of the n number of terminal housings connected to the first+1 of the m number of insulator rings, a first+2 of the n number of terminal housings connected to the first+1 of the m number of insulator rings continuing distally to a distal-most one of the n number of terminal housings connected to a distal-most one of the m number of insulator rings, and wherein the terminal plate is connected to the distal-most one of the n number of terminal housings opposite the distal-most one of the m number of insulator rings to thereby provide the terminal housing assembly extending distally outwardly beyond the imaginary plane at the end cap annular edge and having a central lumen of the terminal housing assembly extending along a central axis aligned with the sleeve and the end cap lead opening axes, wherein the m number of insulator rings and the n number of terminal housings range from 4 to 24, and wherein the m number of insulator rings support respective polymeric ring seals, and the n number of terminal housings support respective metallic annular contact springs;
• and
• g) an o number of jumper wires directly connecting a respective one of the n number of terminal housings to a respective one of the x number of electrical contacts supported on the PCB.