Trunk control systems and wheelchairs comprising same

A wheelchair comprising:

• a trunk control system comprising:
• a harness assembly, the harness assembly having:
• a backrest member configured to be moveably coupled to a wheelchair, wherein the backrest member is selectively moveable about and between a fully retracted position and a fully extended position;
• and
• a harness secured to the backrest member, wherein the harness cooperates with the backrest member to define a receiving space for receiving at least a portion of a torso of a wheelchair user;
• and
• a flexion control assembly coupled to the backrest member of the harness assembly, wherein the flexion control assembly is configured to selectively permit or restrict movement of the backrest member about and between the fully retracted position and the fully extended position;
• and
• a seat having a back support portion,
• wherein the flexion control assembly of the trunk control system comprises a tensioning component that extends through the back support portion.

A wheelchair back assembly comprising:

• a trunk control system comprising:
• a harness assembly, the harness assembly having:
• a backrest member configured to be moveably coupled to a wheelchair, wherein the backrest member is selectively moveable about and between a fully retracted position and a fully extended position;
• and
• a harness secured to the backrest member, wherein the harness cooperates with the backrest member to define a receiving space for receiving at least a portion of a torso of a wheelchair user;
• and
• a flexion control assembly coupled to the backrest member of the harness assembly, wherein the flexion control assembly is configured to selectively permit or restrict movement of the backrest member about and between the fully retracted position and the fully extended position;
• and
• a wheelchair back support that is configured to be secured to a wheelchair, wherein the harness assembly of the trunk control system is configured for movement relative to the wheelchair back support.