Patient support apparatus and also a positioning method for positioning a patient's head within a surgical head restraint unit

1. A patient support apparatus, comprising:

a support table;

a transfer plate, which is disposed to enable it to move in a direction relative to the support table and on which a patient is supported for a surgical intervention and/or a medical imaging examination;

a surgical head restraint unit which is disposed on the transfer plate; and

a position monitoring apparatus for monitoring and/or checking a position of the surgical head restraint unit,

wherein the position monitoring apparatus includes a mechanical target checking unit with an aiming unit,

wherein the aiming unit includes at least two aiming elements,

wherein the at least two aiming units are disposed behind one another in a direction of view and the direction of view includes a target area of the aiming unit,

wherein the target area coincides at least partly with an edge area and/or a delimitation of the maximum permissible positioning area for the surgical head restraint unit, and

wherein a mispositioning of the surgical head restraint unit is determined if at least one of the at least two aiming units is not visible for a clinical operator along the direction of view.

2. The patient support apparatus as claimed in claim 1 ,

wherein the surgical head restraint unit includes a maximum permissible positioning area, and

wherein the position monitoring apparatus is disposed at least partly in an edge area of the maximum permissible positioning area.

3. The patient support apparatus as claimed in claim 1 , wherein the position monitoring apparatus is disposed on the support table and/or the transfer plate.

4. The patient support apparatus as claimed in claim 1 , wherein the position monitoring apparatus is disposed on a side of the transfer plate facing towards the support table or on a side of the support table facing towards the transfer plate.

5. The patient support apparatus as claimed in claim 1 , wherein the position monitoring apparatus is disposed on a side of the transfer plate facing towards the support table and on a side of the support table facing towards the transfer plate.

6. The patient support apparatus as claimed in claim 1 , wherein the support table includes a cutout, which is disposed on a side facing towards the transfer plate and which extends along a longitudinal extent of the support table, on the support table.

7. The patient support apparatus as claimed in claim 1 , further comprising an attachment unit for removable attachment of the position monitoring apparatus to the support table and/or the transfer plate.

8. The patient support apparatus as claimed in claim 1 , wherein the position monitoring apparatus is designed to be magnetic resonance-compatible.

9. A medical imaging apparatus, comprising:

a patient support apparatus comprising:

a support table;

a transfer plate, which is disposed to enable it to move in a direction relative to the support table and on which a patient is supported for a surgical intervention and/or a medical imaging examination;

a surgical head restraint unit which is disposed on the transfer plate; and

a position monitoring apparatus for monitoring and/or checking a position of the surgical head restraint unit,

wherein the position monitoring apparatus includes a mechanical target checking unit with an aiming unit,

wherein the aiming unit includes at least two aiming elements,

wherein the at least two aiming units are disposed behind one another in a direction of view and the direction of view includes a target area of the aiming unit,

wherein the target area coincides at least partly with an edge area and/or a delimitation of the maximum permissible positioning area for the surgical head restraint unit, and

wherein a mispositioning of the surgical head restraint unit is determined if at least one of the at least two aiming units is not visible for a clinical operator along the direction of view.

10. A positioning method for positioning a head of a patient within a surgical head restraint unit, comprising:

positioning the head of the patient within the surgical head restraint unit;

positioning of the surgical head restraint unit within a maximum permissible positioning area on a transfer plate; and

checking the position of the surgical head restraint unit on the transfer plate by means of a position monitoring apparatus,

wherein the position monitoring apparatus includes a mechanical target checking unit with an aiming unit,

wherein the aiming unit includes at least two aiming elements,

wherein the at least two aiming units are disposed behind one another in a direction of view and the direction of view includes a target area of the aiming unit,

wherein the target area coincides at least partly with an edge area and/or a delimitation of the maximum permissible positioning area for the surgical head restraint unit, and

wherein, in the checking the position of the surgical head restraint unit, a mispositioning of the surgical head restraint unit is detected if at least one of the at least two aiming units is not visible for a clinical operator along the direction of view.

11. The positioning method as claimed in claim 10 , wherein when there is a mispositioning of the surgical head restraint unit the head restraint unit is repositioned on the transfer plate.

12. The positioning method as claimed in claim 10 , wherein after a repositioning of the surgical head restraint unit, the position of the surgical head restraint unit on the transfer plate is checked again by means of the position monitoring apparatus.