Knuckle joint assembly for a medical device support system. The knuckle joint assembly includes a cartridge assembly that includes a cartridge housing and a rotary bearing. The cartridge housing includes a bore having a central axis and a bearing mount in the bore. The rotary bearing is press fitted in the bearing mount and configured to receive axially therethrough a spindle to rotatably support the spindle about the central axis. The knuckle joint assembly includes a retaining clip and a retaining pin. The retaining clip is selectively movable to disengage and engage a groove in a spindle to respectively support or release the spindle along a central axis. The retaining pin is movable between a first position to allow movement of the retaining clip between positions but prevent removal of the retaining clip, and a second position to block movement of the retaining clip from the engaged position.

Knuckle joint assembly for a medical device support system. The knuckle joint assembly includes a cartridge assembly that includes a cartridge housing and a rotary bearing. The cartridge housing includes a bore having a central axis and a bearing mount in the bore. The rotary bearing is press fitted in the bearing mount and configured to receive axially therethrough a spindle to rotatably support the spindle about the central axis. The knuckle joint assembly includes a retaining clip and a retaining pin. The retaining clip is selectively movable to disengage and engage a groove in a spindle to respectively support or release the spindle along a central axis. The retaining pin is movable between a first position to allow movement of the retaining clip between positions but prevent removal of the retaining clip, and a second position to block movement of the retaining clip from the engaged position.

A load balancing arm for a medical device support system. The load balancing arm includes a proximal hub, an adjustable bearing element, a support arm, a spring and a link. A distal end of the support arm is configured to support a medical device load and a proximal end is pivotably mounted to a main bearing element for pivotable movement about a main pivot axis. The spring extends within a cavity of the support arm and is mounted to exert a biasing force between the main pivot axis and a distal end of the spring. The link has a proximal end pivotably mounted to the adjustable bearing element for pivotable movement about an adjustable pivot axis, and a distal end pivotably mounted to the distal end of the spring such that the biasing force exerted by the spring is transmitted through the link to the adjustable bearing element.

Knuckle joint assembly for a medical device support system. The knuckle joint assembly includes a cartridge assembly that includes a cartridge housing and a rotary bearing. The cartridge housing includes a bore having a central axis and a bearing mount in the bore. The rotary bearing is press fitted in the bearing mount and configured to receive axially therethrough a spindle to rotatably support the spindle about the central axis. The knuckle joint assembly includes a retaining clip and a retaining pin. The retaining clip is selectively movable to disengage and engage a groove in a spindle to respectively support or release the spindle along a central axis. The retaining pin is movable between a first position to allow movement of the retaining clip between positions but prevent removal of the retaining clip, and a second position to block movement of the retaining clip from the engaged position.

A medical device support system including a central shaft, an extension arm, and a brake assembly. The extension arm has a support for a medical device and a hub at its proximal end mounted to the central shaft for pivotable movement about the central shaft. The brake assembly is secured in the hub for rotation therewith and includes first and second discrete arc shape clamp pieces configured to flex toward and away from each other to respectively increase and decrease a frictional braking force to the central shaft. The hub includes a hub access opening configured to allow passage therethrough of at least one of the arc shape clamp pieces.

Dual action magnetic brakes and related methods are provided. In one aspect, such a brake includes a housing, a rotatable shaft extending through the housing, and a braking assembly in the housing. The braking assembly includes a coil and a braking member. The coil can generate a magnetic field when energized with electrical current. The braking member, and one or more flexible members attached thereto, can move in response to the presence or absence of the magnetic field to facilitate rotation or non-rotation of the shaft.

A medical device support system including a central shaft, an extension arm, a brake clamp assembly, and a brake actuator. The extension arm has a support for a medical device and a hub at its proximal end mounted to the central shaft for pivotable movement about the central shaft. The brake clamp assembly is secured in the hub for rotation therewith and includes first and second clamp portions. The brake actuator includes a cap, a plunger coupled to the cap for reciprocable axial movement relative to the cap, and a spring disposed between the cap and the plunger and configured to exert a biasing force against movement of the cap axially toward the plunger. The cap is adjustably mounted to the hub and coupled to the plunger to selectively urge the first and second clamp portions either toward or away from the central shaft to respectively increase or decrease a frictional braking force to the central shaft.

A medical device support system including a central shaft, an extension arm, and a brake assembly. The extension arm has a support for a medical device and a hub at its proximal end mounted to the central shaft for pivotable movement about the central shaft. The brake assembly is secured in the hub for rotation therewith and includes first and second backing portions and first and second liners supported by the backing portions. At least the first liner is supported by the first backing portion by the first liner being snap-fitted to the first backing portion. The brake assembly includes an actuator configured to flex the first and second backing portions to urge the first and second liners toward and away from each other to respectively increase and decrease a frictional braking force to the central shaft.

A medical device support system adapter for connection to a load balancing arm of a medical device support system. The adapter includes a body having a central axis, a connection component at one end of the body and an interface at an opposite end of the body. The body is rotatably connectable to another component of the medical device support system. The interface is connectable to a hub of the load balancing arm of the medical device support system. The interface has at least two mounting bolt holes equally angularly spaced apart about the central axis such that the body is connectable to the hub of the load balancing arm in at least two different angular positions of the body about the central axis.

A medical device support system including a central shaft; an extension arm; and a brake assembly. The extension arm has a support for a medical device and a hub at its proximal end mounted to the central shaft for pivotable movement about the central shaft. The brake assembly is secured in the hub for rotation therewith and includes first and second discrete arc shape clamp pieces that are detachably coupled to one another at one end for flexural movement relative to a coupling joint and that are free at an opposite end. The brake assembly includes an actuator configured to flex the first and second clamp pieces relative to the coupling joint toward and away from each other to respectively increase and decrease a frictional braking force to the central shaft.