6-DOF (degree of freedom) gravity balanced operating microscope frame

Abstract

The invention discloses a 6-DOF (degree of freedom) gravity balanced operating microscope frame which comprises a footstand, an upright post, a bearing arm, a rear supporting seat, a balance arm, a front supporting seat and a small frame. The invention designs a combining mode of transmitting balance force through a cable and adding a balance moment through a movable pulley and a lever with a built-in balance weight to realize the balance of an operating microscope and a cantilever and designs a break-proof cable structure of double working cables and a safety cable so as to guarantee the working safety of the frame. Six rotation degrees of freedom of the whole frame are all electromagnetically locked, and the built-in gravity balanced structure effectively reduces the gravity center of the frame, thereby improving the stability. Compared with lever type gravity balance, the frame has the characteristics of flexibility and compact appearance.

Description

technical field [0001] The invention relates to a frame, in particular to a 6-degree-of-freedom built-in gravity balance operating microscope frame. Background technique [0002] The operating microscope frame is the assembly of all parts of the operating microscope except the microscope. Its function is to support the microscope, provide enough working space for the microsurgery process, and have up to 6 degrees of freedom, so that the microscope can maintain balance and lock reliably in any position and posture in the operation area. Surgical microscope racks are generally divided into suspension structures fixed on the ceiling and mobile structures using foot rollers. Both structures have cantilever structures. There are three ways to balance the balance arm, mechanical spring balance, pneumatic spring balance and gravity balance. At present, domestic operating microscopes mainly use mechanical spring balancing, and a small amount of pneumatic spring balancing. There is...

AI Technical Summary

Problems solved by technology

[0003] There are existing patents related to the gravity balance surgical microscope frame abroad, such as the European patent "SurgicalMicroscope Unit" (EP0700665B1) and the US patent "Counterbalanced Supporting Frame for a Surgical Microscope" (US5173802) The gravity balance frame used for surgical microscopes is a lever In theory, the lever-type gravity balance rack has a stable moment balance ability, but the mechanism is relatively complicated, the weight of the whole rack is heavy, the balance weight is external, the moment of inertia is large, and the balance arm and the load arm They cannot be rotated relative to each other. When rotating the balance arm of the surgical microscope in the horizontal plane, it is necessary to rotate the entire weight except the base, which reduces the operating flexibility of the surgical microscope.

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