Patient Support Systems With Hollow Rotary Actuators
AssigneeStryker Corporation
InventorGary L. Bartley
Life of this patent
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Abstract
A patient support system comprises a patient support apparatus for patients. The patient support apparatus comprises a base and a patient support surface supported by the base. The patient support apparatus also comprises movable members that are movable between at least a first position and a second position. One or more hollow rotary actuators are coupled to each movable member. The hollow rotary actuator permits drive torque to move the movable member in a desired position between the first and second positions and restricts back drive torque from moving the movable member. The hollow rotary actuator is also hollow to allow objects to be placed therethrough.
Claims21
A patient support apparatus comprising:
- a patient support surface;
- a first member and a movable member, said movable member movable relative to said first member;
- and
- an actuator coupled to said movable member to move said movable member relative to said first member, said actuator comprising:
- a gear assembly having an input member, an output member connected to said movable member, and a gear arrangement operable between said input member and said output member;
- and
- a motor configured to apply torque to said input member to rotate said output member through said gear arrangement,
- said gear assembly defining a through passage, said through passage is configured to permit objects to pass through said gear assembly while said motor applies torque to said input member and rotates said output member.
Dependencies are inferred from the claim text.