System, method and kit for immobilization of a human's body part

1. A device for immobilization of a patient body part for radiotherapy applications comprising at least one flanged support member and at least one support member fixation means for mounting the at least one flanged support member to a fixation surface at a distance from said fixation surface, wherein the at least one flanged support member is adapted to receive and retain a first and optionally a second frame, characterized in that the at least one flanged support member comprises at one side a curved extension towards the fixation surface, wherein the curved extension is adapted to retain the first frame or the first frame and the second frame.

2. A system for immobilization of a patient body part for radiotherapy applications comprising:

a device comprising at least one flanged support member and at least one support member fixation means for mounting the at least one flanged support member to a fixation surface at a distance from said fixation surface, wherein the at least one flanged support member is adapted to receive and retain a first and a second frame;

a first frame, comprising a first sheet for covering anatomical contours of a first area of said body part, wherein the first frame forms a circumferential rim for the first sheet;

optionally a second frame, comprising a second sheet for covering anatomical contours of a second area of said body part which is not covered by the first sheet, wherein the second frame forms a circumferential rim for the second sheet, wherein the second frame is superimposable on the first frame, wherein the first sheet and the second sheet form a double shell mask enclosing said body part;

characterized in that the at least one flanged support member comprises at one side a curved extension towards the fixation surface, wherein the first frame or the first frame and the second frame are bent to follow the curved extension of the at least one flanged support member.

3. The system according to claim 2 , wherein the first frame or the first frame and the second frame comprise at least at one side a deformable part, wherein the deformable part is deformable in a direction transverse to the fixation surface.

4. The system according to claim 3 , wherein the first frame and the second frame comprise at an inner side, directed towards said sheets, positioning means for positioning said sheets in said frames and wherein on the deformable part of said frames the positioning means are open and separated protrusions.

5. The system according to claim 3 , wherein the first frame and the second frame comprise guiding means for guiding the second frame to a correct position on the first frame and for guiding the first frame to a correct position on the at least one flanged support member and wherein on the deformable part of said frames the guiding means are separated protrusions.

6. The system according to claim 2 , wherein the at least one flanged support member comprises openings and the first frame and the second frame comprise corresponding protrusions, wherein the protrusions of the first frame are hollow and received in the openings of the at least one flanged support member and the curved extension and wherein the protrusions of the second frame are received in the hollow protrusions of the first frame.

7. The system according to claim 2 , wherein the device comprises a double locking mechanism, comprising a first rotatable lever and a second rotatable lever, wherein the first rotatable lever and the second rotatable lever are stacked on each other, wherein the first frame is locked to the device with the first rotatable lever in a first position and unlocked to the device with the first rotatable lever in a second position and wherein the second frame is locked to the device with the second rotatable lever in a second position and unlocked to the device with the second rotatable lever in a second position.

8. The system according to claim 2 , wherein the second frame comprises clamps for securing the first and the second frame to the at least one flanged support member, wherein the clamps are attached to a first side of the second frame and removably attached to the at least one flanged support member and wherein the first frame is positioned in between the at least one flanged support member and the second frame.

9. The system according to the claim 8 , wherein the clamps comprise a hook and the at least one flanged support member a corresponding notch for receiving the hook.

10. The system according to claim 2 , wherein the second sheet comprises a cutout, resulting in a first strap and a second strap, wherein the first strap and the second strap are extending from a first side of the second frame to a second side of the second frame, opposite to the first side.

11. A method for immobilization of a patient body part for radiotherapy applications comprising the steps of:

mounting a device comprising at least one flanged support member and at least one support member fixation means to a fixation surface, wherein the at least one flanged support member is mounted with the at least one support member fixation means to the fixation surface at a distance from said fixation surface, wherein the at least one flanged support member is adapted to receive and retain a first and optionally a second frame;

mounting a first frame, comprising a first sheet, to the at least one flanged support member;

placing the patient body part to be immobilized on the first sheet thereby covering the anatomical contours of a first area of said body part;

optionally mounting a second frame, comprising a second sheet, on the first frame to the at least one flanged support member thereby covering the anatomical contours of a second area of said body part which is not covered by the first sheet, to form a double shell mask enclosing said body part;

characterized in that, the at least one flanged support member comprises at one side a curved extension towards the fixation surface, wherein the first frame or the first frame and the second frame are bent to follow the curved extension of the at least one flanged support member.

12. The method according to claim 11 , wherein the first frame or the first frame and the second frame are flat before initial use and comprise at least at one side a deformable part, wherein the deformable part is being deformed in a direction transverse to the fixation surface to follow the curved extension of the at least one flanged support member.

13. The method according to claim 11 , wherein the first frame and the second frame are secured to the at least one flanged support member by removably attaching clamps to the at least one flanged support member, wherein the clamps are attached to a first side of the second frame and wherein the first frame is positioned in between the at least one flanged support member and the second frame.

14. The method according to claim 11 , wherein the first frame is locked to the device by rotating a first rotatable lever of a double locking mechanism from a first position to a second position, wherein the second frame is locked to the device by rotating a second rotatable lever of the double locking mechanism from a first position to a second position and wherein the first rotatable lever and the second rotatable lever are stacked on each other.

15. The method according to claim 11 , wherein the second sheet comprises a cutout, resulting in a first strap and a second strap, wherein the first strap and the second strap are extending from a first side of the second frame to a second side of the second frame, opposite to the first side and wherein the first strap and the second strap immobilize the patient body part, leaving the patient body part visible in between the first strap and the second strap.

16. A kit for immobilization of a patient body part for radiotherapy applications, comprising:

a device, comprising at least one flanged support member and at least one support member fixation means for mounting the at least one flanged support member to a fixation surface at a distance from said fixation surface;

a first frame, comprising a first sheet, wherein the first frame forms a circumferential rim for the first sheet;

optionally a second frame, comprising a second sheet, wherein the second frame forms a circumferential rim for the second sheet, wherein the second frame is superimposable on the first frame;

characterized in that the at least one flanged support member comprises at one side a curved extension towards the fixation surface, wherein the first frame or the first frame and the second frame are flat and comprise at least at one side a deformable part, wherein the deformable part is deformable in a direction transverse to the fixation surface.

17. The kit according to claim 16 , wherein the kit further comprises clamps for securing the first frame and the second frame to the at least one flanged support member.

18. The kit according to claim 16 , wherein the second sheet comprises a cutout, resulting in a first strap and a second strap, wherein the first strap and the second strap are extending from a first side of the second frame to a second side of the second frame, opposite to the first side.