Patient side systems with a counterbalance subsystem

摘要

In one embodiment of the invention, a patient side-system is provided that includes a column with a rail and a counterbalance subsystem. The patient side-system may further include a braking subsystem. The counterbalance subsystem includes a spring assembly coupled at one end to the column with a spring member, and a housing movably coupled to the rail. The housing includes a drum to receive the spring member and a plurality of roller elements to guide a movement of the spring member winding or unwinding on the drum. If present, the braking subsystem includes a first pulley rotatably coupled to the column, a second pulley with a locking mechanism spaced apart from the first pulley and rotatably coupled to the column, and at least one brake cable wrapped around the first pulley and the second pulley with ends coupled to the housing. The locking mechanism can set a position of the housing along the column.

主权项

1. A patient side-system comprising:
a column including a rail; and a counterbalance subsystem including
a spring assembly coupled at one end to the column, the spring assembly including at least one spring member composed of a plurality of laminations, anda housing coupled to the column, the housing including
at least one drum to receive the at least one spring member, anda plurality of roller elements adapted to guide a movement of the at least one spring member winding onto or unwinding off of the drum, the plurality of roller elements further adapted to press against one or more of the plurality of laminations of the at least one spring member to prevent lamination separation.