Drive arrangement for an endoscopic shaft-type instrument

A drive arrangement for an endoscopic shank instrument, the drive arrangement comprising:

• an instrument housing at the proximal shank end;
• at least one housing shaft which is rotatably mounted in the instrument housing and which is repeatedly releasably drive-connected to a pull device, said pull device being provided at a distal shank end for the control of an instrument head;
• and
• a drive unit with at least one drive shaft, the drive shaft being drive-connectable with the at least one housing shaft, wherein the at least one housing shaft is aligned obliquely to the drive shaft drive connected thereto, the drive unit having an essentially closed drive housing which is connectable to the instrument housing by way of a plug-in connection, wherein the at least one drive shaft in the drive housing is mounted in the axial direction on one or more springs elements and is axially displaceable against spring force, counter to the joining direction of the instrument housing and drive housing.

A drive arrangement for an endoscopic shank instrument, the drive arrangement comprising:

• an instrument housing at the proximal shank end;
• at least one housing shaft which is rotatably mounted in the instrument housing and which is repeatedly releasably drive-connected to a pull device, said pull device being provided at a distal shank end for the control of an instrument head;
• and
• a drive unit with at least one drive shaft, the drive shaft being drive-connectable with the at least one housing shaft, wherein the at least one housing shaft is aligned obliquely to the drive shaft drive connected thereto, wherein the housing shaft is coupled in movement to the drive shaft via at least one universal joint.

A drive arrangement for an endoscopic shank instrument, the drive arrangement comprising:

• an instrument housing at the proximal shank end;
• at least one housing shaft which is rotatably mounted in the instrument housing and which is repeatedly releasably drive-connected to a pull device, said pull device being provided at a distal shank end for the control of an instrument head;
• a drive unit with at least one drive shaft, the drive shaft being drive-connectable with the at least one housing shaft, wherein the at least one housing shaft is aligned obliquely to the drive shaft drive connected thereto, the drive unit having an essentially closed drive housing which is connectable to the instrument housing by way of a plug-in connection;
• spring elements provided in the instrument housing, the at least one housing shaft being mounted in a fixed rotational position via at least one of the spring elements with the instrument housing separated from the drive housing, wherein a leaf spring element of the spring elements in the instrument housing is assigned to each housing shaft, said leaf spring element in a locking position in each case engaging into a recess which is formed in the region of an outer side of the first part of the universal joint, said first part being arranged on the respective housing shaft.

A drive arrangement for an endoscopic shank instrument, the drive arrangement comprising:

• an instrument housing at the proximal shank end;
• at least one housing shaft which is rotatably mounted in the instrument housing and which is repeatedly releasably drive-connected to a pull device, said pull device being provided at a distal shank end for the control of an instrument head;
• and
• a drive unit with at least one drive shaft, the drive shaft being drive-connectable with the at least one housing shaft, wherein the at least one housing shaft is aligned obliquely to the drive shaft drive connected thereto, the drive unit having an essentially closed drive housing which is connectable to the instrument housing by way of a plug-in connection, wherein a fitting bore running through the instrument housing in the joining direction of the instrument housing and the drive housing is formed on the drive housing, and a corresponding fitting bore is formed on the drive housing in a manner departing from a joining surface to the instrument housing, wherein the fitting bores which are formed on the drive housing and the instrument housing are provided for receiving a closure pin.

A drive arrangement for an endoscopic shank instrument, the drive arrangement comprising:

• an instrument housing at the proximal shank end;
• at least one housing shaft which is rotatably mounted in the instrument housing and which is repeatedly releasably drive-connected to a pull device, said pull device being provided at a distal shank end for the control of an instrument head;
• and
• a drive unit with at least one drive shaft, the drive shaft being drive-connectable with the at least one housing shaft, wherein the at least one housing shaft is aligned obliquely to the drive shaft drive connected thereto, the drive unit having an essentially closed drive housing which is connectable to the instrument housing by way of a plug-in connection, wherein the at least one housing shaft in the instrument housing is mounted in an axial direction on at least one spring element and is axially displaceable against spring force, counter to the joining direction of the instrument housing and the drive housing.