Stand arrangement for a medical-optical instrument

A stand arrangement for a medical-optical instrument comprising:

• a holding unit;
• a first link;
• a first rotational joint for pivotally journalling said first link to said holding unit;
• a second link having a forward section;
• a second rotational joint for rotatably connecting said second link to said first link;
• a take-up unit for accommodating the medical-optical instrument;
• a third rotational joint disposed on said forward section;
• said second link carrying said take-up unit in said forward section via said third rotational joint;
• said take-up unit having a front link;
• a force transmitting device rotatably journalled on said second rotational joint;
• said front link being coupled to said force transmitting device;
• a coupling device for coupling said holding unit and said force transmitting device;
• said coupling device including a flexible force transmitting element which can be loaded in tension;
• said force-transmitting element being one of a cable, filament, belt and chain;
• said coupling device further including a first direction-changing roller and a second direction-changing roller;
• and, said cable or said belt being guided on said first and second direction-changing rollers;
• and,
• said second direction-changing roller being rigidly connected to said force transmitting device.

A stand arrangement for a medical-optical instrument comprising:

• a holding unit;
• a first link;
• a first rotational joint for pivotally journalling said first link to said holding unit;
• a second link having a forward section;
• a second rotational joint for rotatably connecting said second link to said first link;
• a take-up unit for accommodating the medical-optical instrument;
• a third rotational joint disposed on said forward section;
• said second link carrying said take-up unit in said forward section via said third rotational joint;
• said take-up unit having a front link;
• a force transmitting device rotatably journalled on said second rotational joint;
• said front link being coupled to said force transmitting device;
• a coupling device for coupling said holding unit and said force transmitting device;
• said coupling device including a flexible force transmitting element which can be loaded in tension;
• further comprising an additional link for coupling said force transmitting device and said front link;
• said second link, said front link and said force transmitting device conjointly defining a first parallel linkage;
• and,
• said second link has a rearward section extended to form an arm and said stand arrangement further comprising first and second ancillary links;
• and, said first and second ancillary links and said arm conjointly defining a second parallel linkage.

A stand arrangement for a medical-optical instrument comprising:

• a holding unit;
• a first link;
• a first rotational joint for pivotally journalling said first link to said holding unit;
• a second link having a forward section;
• a second rotational joint for rotatably connecting said second link to said first link;
• a take-up unit for accommodating the medical-optical instrument;
• a third rotational joint disposed on said forward section;
• said second link carrying said take-up unit in said forward section via said third rotational joint;
• said take-up unit having a front link;
• a force transmitting device rotatably journalled on said second rotational joint;
• said front link being coupled to said force transmitting device;
• a coupling device for coupling said holding unit and said force transmitting device;
• said coupling device including a flexible force transmitting element which can be loaded in tension;
• said force-transmitting element being one of a cable, filament. belt and chain;
• said coupling device further including a first direction-changing roller and a second direction-changing roller;
• and, said cable or said belt being guided on said first and second direction-changing rollers;
• said first direction-changing roller being rotatably journalled on said holding unit;
• said coupling device further including a drive assigned to said first direction-changing roller;
• and,
• a control loop connected to said drive;
• said control loop including sensor means for detecting a movement which is to be dampened;
• and, said sensor means being at least one of a vibration detector, an angle sensor and a distance sensor.

A stand arrangement for a medical-optical instrument comprising:

• a holding unit;
• a first link;
• a first rotational joint for pivotally journalling said first link to said holding unit;
• a second link having a forward section;
• a second rotational joint for rotatably connecting said second link to said first link;
• a take-up unit for accommodating the medical-optical instrument;
• a third rotational joint disposed on said forward section;
• said second link carrying said take-up unit in said forward section via said third rotational joint;
• said take-up unit having a front link;
• a force transmitting device rotatably journalled on said second rotational joint;
• said front link being coupled to said force transmitting device;
• a coupling device for coupling said holding unit and said force transmitting device;
• said coupling device including a flexible force transmitting element which can be loaded in tension;
• and,
• said holding unit and said force transmitting device being so coupled that the orientation of said front link does not change when there is a movement of said first link or said second link.