Holding arm system
First Claim
1. A holding arm system for positioning and holding a medical instrument in a region of an operation, comprising:
- a proximal holding means for fastening the holding arm system to an immobile. object;
a distal quick change means for receiving and releasably retaining the medical instrument;
a plurality of connected arm segments comprising outer tubular shanks, for coupling said proximal holding means and said distal quick change means and for and positioning said plurality of arm segments, said quick change means and the medical instrument at one of a plurality of positions in the region of the operation;
a plurality of joints for connecting at least a portion of said plurality of arm segments to one another, each joint of said plurality of joints being formed as a hinge joint with a predefined pivoting region; and
fastening means, positioned within at least a portion of said plurality of arm segments, for releasably locking said plurality of arm segments at said one of said plurality of positions, said fastening means comprising;
an axially mounted shaft in each of said arm segment tubular shanks, each said shaft being axially rotable relative to its respective arm segment tubular shank, each of said shafts having a first end and a second end and having engaging means on at least one of said first and second ends and positioned within one of said joints, for engaging, with a positive fit, engaging means of at least one other shaft;
breaking means, positioned on a particular arm segment of said plurality of arm segments, for immobilizing said particular arm segment shaft, wherein when said particular shaft is immobilized when said plurality of arm segments is in a particular position of said plurality of positions, all of said shafts are immobilized due to positive engagement between said engagement means of said shafts, thereby locking said plurality of arm segments in said particular position; and
fastening activation means, positioned on said particular arm segment, for selectively activating and deactivating said breaking means.
1 Assignment
0 Petitions
Accused Products
Abstract
The invention relates to a holding arm system, particularly for holding surgical instruments in the region of an operation, with a holding arm incorporated into arm segments and into hinge joints connecting these. The holding arm at the proximal end is fastened to a rail which is guided in a horizontal position on the operating table. Each arm segment comprises straight-lined tube segments as outer sleeves and, in each arm tube, a shaft which is axially rotatable relative to the arm tube and which, with conical gearwheels on the end faces, engages into the shaft of the repective connecting arm segment. A fastening device is operable from a single arm segment and locks the whole holding arm by way of a braking device which engages at a defined location within the arm tube and by these means prevents the rotating of the shafts, connected with a positive fit, in the arm segments.
56 Citations
17 Claims
-
1. A holding arm system for positioning and holding a medical instrument in a region of an operation, comprising:
-
a proximal holding means for fastening the holding arm system to an immobile. object; a distal quick change means for receiving and releasably retaining the medical instrument; a plurality of connected arm segments comprising outer tubular shanks, for coupling said proximal holding means and said distal quick change means and for and positioning said plurality of arm segments, said quick change means and the medical instrument at one of a plurality of positions in the region of the operation; a plurality of joints for connecting at least a portion of said plurality of arm segments to one another, each joint of said plurality of joints being formed as a hinge joint with a predefined pivoting region; and fastening means, positioned within at least a portion of said plurality of arm segments, for releasably locking said plurality of arm segments at said one of said plurality of positions, said fastening means comprising; an axially mounted shaft in each of said arm segment tubular shanks, each said shaft being axially rotable relative to its respective arm segment tubular shank, each of said shafts having a first end and a second end and having engaging means on at least one of said first and second ends and positioned within one of said joints, for engaging, with a positive fit, engaging means of at least one other shaft; breaking means, positioned on a particular arm segment of said plurality of arm segments, for immobilizing said particular arm segment shaft, wherein when said particular shaft is immobilized when said plurality of arm segments is in a particular position of said plurality of positions, all of said shafts are immobilized due to positive engagement between said engagement means of said shafts, thereby locking said plurality of arm segments in said particular position; and fastening activation means, positioned on said particular arm segment, for selectively activating and deactivating said breaking means. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8)
-
-
9. A system for holding an object in one of a plurality of positions, comprising:
-
a holding arm comprising a first, a second, a third, a fourth and a fifth arm segment, said arm segments being interconnected by a first, a second, a third, a fourth and a fifth joint, each said arm segment comprising a tubular shank and an inner shaft being rotable with respect to said tubular shank, each said shaft having at least one end face with a conical gearwheel, wherein said at least one conical gearwheel engages at least one other conical gearwheel of at least one other arm segment shaft to form a positive fit between all arm segment shafts, and wherein each said joint comprises a hinge joint with a predefined pivoting region; a holding block connected to said first arm segment for fastening said holding arm to an immobile object; and locking means positioned on one of said arm segments for releasably locking one of said arm segment shafts to prevent said one arm segment shaft from rotation and thereby locking all other arm segment shafts positively connected by said gearwheels from rotation such that said holding arm is locked in a particular position of a plurality of positions. - View Dependent Claims (10, 11, 12, 13, 14, 15, 16, 17)
-
Specification