1. A knee joint endoprosthesis, comprising:
a femur component and a tibia component, which comprise cooperating joint surfaces that are in contact with one another,
a rotation guide arrangement for forcing a rotational movement of the femur component and the tibia component relative to each other about a medial center of rotation due to a flexure of the knee joint endoprosthesis, which rotation guide arrangement comprises a first guide element having a first guidance surface and a second guide element having a second guidance surface which cooperates with the first guidance surface,
wherein:
the tibia component comprises the first guide element,
the femur component comprises the second guide element,
the first guidance surface defines a first radius of curvature,
the second guidance surface defines a second radius of curvature, and
the first and second radii of curvature are identical,
the first and the second guidance surfaces abut against each other along an even circular arc section within a flexion angle range which is defined by a minimum and a maximum flexion angle, and at least one of roll upon one another and slide upon one another during a flexural movement,
the femur component comprises two joint surfaces which are configured to be mirror-symmetrical with respect to a second mirror plane running substantially in the anterior-posterior direction,
the second guidance surface is configured such that a center point is defined for each flexion angle when there is a flexion of the knee joint endoprosthesis with a flexion angle within the flexion angle range of the circular arc section, and
the center points lie on a center point plane which runs parallel to the second mirror plane but offset in a lateral direction.
2. A knee joint endoprosthesis in accordance with claim 1, wherein the first and the second radii of curvature are independent of the flexion angle of the knee joint endoprosthesis.
3. A knee joint endoprosthesis in accordance with claim 1, wherein the first guidance surface is mirror-symmetrical with respect to a first minor plane running in the anterior-posterior direction.
4. A knee joint endoprosthesis in accordance with claim 3, wherein:
the rotation guide arrangement defines a rotational axis for the rotational movement of the femur component and the tibia component relative to each other, and
the rotational axis runs parallel to a line of intersection between the first guidance surface and the first mirror plane.
5. A knee joint endoprosthesis in accordance with claim 4, wherein the circular arc section defines a plane of intersection which runs perpendicularly to the line of intersection.
6. A knee joint endoprosthesis in accordance with claim 4, wherein the line of intersection is inclined relative to a surface-normal of a tibial plane defined by the tibia component.
7. A knee joint endoprosthesis in accordance with claim 3, wherein the first minor plane and the second mirror plane are identical in an extended position of the knee joint endoprosthesis.
8. A knee joint endoprosthesis in accordance with claim 3, wherein the second minor plane and the first mirror plane are identical for flexion angles between the tibia component and the femur component which are smaller than a limiting angle.
9. A knee joint endoprosthesis in accordance with claim 1, wherein the first guidance surface defines a section of a cylinder surface.
10. A knee joint endoprosthesis in accordance with claim 1, wherein a radius of the circular arc section corresponds to the first and second radii of curvature.
11. A knee joint endoprosthesis in accordance with claim 1, wherein a spacing of the center point plane from the second mirror plane increases in dependence on the flexion angle.
12. A knee joint endoprosthesis in accordance with claim 1, wherein the two joint surfaces of the femur component comprise condyle surfaces that are arranged mirror-symmetrically with respect to the second minor plane.
13. A knee joint endoprosthesis in accordance with claim 1, wherein:
the tibia component comprises a tibial part and a meniscus part that is mounted on the tibial part, and
the meniscus part comprises joint surfaces which cooperate with the joint surfaces of the femur component.
14. A knee joint endoprosthesis in accordance with claim 13, wherein the meniscus part comprises the first guide element.
15. A knee joint endoprosthesis in accordance with claim 13, wherein at least one of the meniscus part and the tibial part are configured to be minor-symmetrical with respect to a first mirror plane running in the anterior-posterior direction.
16. A knee joint endoprosthesis in accordance with claim 1, wherein the first radius of curvature has a value which lies in a range from approximately 7 mm up to approximately 15 mm.
17. A knee joint endoprosthesis in accordance with claim 1, wherein the second guidance surface is defined by a section of an outer surface of a thread which has a rounded thread root having a thread-root radius which corresponds to the first radius of curvature.
18. A knee joint endoprosthesis in accordance with claim 17, wherein a pitch of the thread increases in dependence on the flexion angle of the knee joint endoprosthesis.
19. A knee joint endoprosthesis in accordance with claim 1, wherein the second guide element is formed in a region between the joint surfaces of the femur component.
20. A knee joint endoprosthesis in accordance with claim 1, wherein the second guide element is formed in a posterior end region of the femur component.
21. A knee joint endoprosthesis in accordance with claim 1, wherein at least one of the femur component and the tibia component is constructed in a one piece manner.
22. A knee joint endoprosthesis in accordance with claim 1, wherein at least one of the tibial part and the meniscus part are constructed in a one piece manner.
The claims below are in addition to those above.
All refrences to claim(s) which appear below refer to the numbering after this setence.
1. A light system, comprising:
a light shaping device, operable based on a digital control to create light,
where an outer shape of the light is shaped based on the digital control,
and where a color of the light is shaped based on the digital control,
and where a time to transition between a first control of light and a second control of light is controlled based on said digital control,
said light shaping device receiving a command including said digital control,
wherein said command includes a first part indicative of a gobo type from among multiple different gobo types, a second part indicative of said color,
and a third part indicative of said time.
2. The light system as in claim 1, wherein said light system includes a buffer memory, which receives said digital control from a remote source.
3. The light system as in claim 1, wherein said light shaping device shapes the light on a pixel by pixel basis based on said digital control.
4. The light system as in claim 1, wherein said time to transition is a time requested for the gobo to respond to the command.
5. The light system as in claim 1, wherein said time to transition is a time requested for the gobo to rotate.
6. The light system as in claim 1, wherein said digital control includes a numerical value indicative of a specific gobo, and operates to select an image from a library and based on based on said numerical value.
7. The light system as in claim 6, wherein said light shaping device includes
a memory, and stores the image from the library in the memory, and
modifies said image in the memory based on said second part and said third part.
8. The light system as in claim 7, wherein said digital control further comprises a fourth part indicative of a second gobo, and wherein said memory stores an image indicative of said second gobo along with said gobo type, herein a first gobo.
9. The light system as in claim 8, wherein said first gobo and said second gobo are controlled by said digital control to be spinning in opposite directions.
10. The light system as in claim 8, wherein said first gobo and said second gobo have different brightness values.
11. The light system as in claim 8, wherein said digital control also includes parts which represent brightness values, and where said first gobo and said second gobo are controlled by said parts to have different brightness values.
12. The light system as in claim 8, wherein said third value is indicative of a time to transition between said first gobo and said second gobo.
13. A lighting system, comprising:
a light source;
a computer system, receiving a digital control which controls characteristics of light from the light source;
a light shaping device, controlled by said computer system to shape least an outer perimeter of the light from the light source, a specific shape of the outer perimeter being based on the digital control;
a light coloring device, controlled by said computer system to color the light based on the digital control,
wherein the computer system controls a timing to transition between a first control of light and a second control of light based on said digital control.
14. The light system as in claim 13, further comprising a buffer memory, which receives said digital control from a remote source.
15. The light system as in claim 14, further comprising an interface to a wired connection, which receives said digital control.
16. The light system as in claim 13, wherein said light shaping device shapes the light on a pixel by pixel basis based on said digital control.
17. The light system as in claim 13, wherein said time to transition is a time requested for a gobo to respond to a command.
18. The light system as in claim 13, wherein said time to transition is a time requested for a gobo to rotate.
19. The light system as in claim 13, wherein said digital control includes a numerical value indicative of a specific gobo, and operates to select an image from a library and based on based on said numerical value.
20. The light system as in claim 19, wherein said image is stored in a memory that stores multiple different images.
21. The light system as in claim 19, wherein said light shaping device includes a memory, and stores the image from the library in the memory, and modifies said image in the memory based on information and said digital control that represents color of light and timing to transition.
22. The light system as in claim 21, wherein said digital control further comprises a fourth part indicative of a second gobo, and wherein said memory stores an image indicative of said second gobo along with said gobo type, herein a first gobo.
23. The light system as in claim 22, wherein said first gobo and said second gobo are controlled by said digital control to be spinning in opposite directions.
24. The light system as in claim 22, wherein said first gobo and said second gobo have different brightness values.
25. The light system as in claim 22, wherein said digital control also includes parts which represent brightness values, and where said first gobo and said second gobo are controlled by said parts to have different brightness values.
26. The light system as in claim 22, wherein said digital control is indicative of a time to transition between said first gobo and said second gobo.
27. A lighting system, comprising:
a light source;
a computer system, receiving a digital control which controls characteristics of light from the light source;
a light shaping device, controlled by said computer system to shape least an outer perimeter of the light from the light source, a specific shape of the outer perimeter being based on the digital control;
a light coloring device, controlled by said computer system to color the light based on the digital control,
wherein said digital control is indicative of a first shape representing a first gobo, and is indicative of a second shape representing a second gobo, and
wherein a combination of said first gobo and said second gobo are used to shape the light.
28. The lighting system as in claim 27, wherein the computer system controls a timing to transition between a first control of light and a second control of light based on said digital control.
29. The light system as in claim 27, wherein said digital control includes information indicative of first and second specific gobos, and operates to select images from a library and based on based on said first and second specific gobos.
30. The light system as in claim 29, wherein said light shaping device includes a memory, and stores the image from the library in the memory, and modifies said image in the memory based on information and said digital control that represents color of light and timing to transition.
31. The light system as in claim 27, wherein said first gobo and said second gobo are controlled by said digital control to be spinning in opposite directions.
32. The light system as in claim 27, wherein said digital control also includes parts which represent brightness values, and where said first gobo and said second gobo are controlled by said parts to have different brightness values.
33. The light system as in claim 27, wherein said digital control is indicative of a time to transition between said first gobo and said second gobo.