System for the reconstruction of symmetrical body parts

Abstract

A medical system for assisting in the planning and/or performance of the reconstruction of normally symmetrical body parts of a patient comprises a measuring unit for measuring a first surface and a second surface for determining a topography of the first and second surfaces, a storage unit for storing the determined topographies of the first and second surfaces, an evaluation unit for establishing a mirror image of the stored topography of the first surface and for calculating deviations of the stored topography of the second surface from the first surface mirror image, and a control unit for outputting guidance information for at least one medical instrument on the basis of the calculated deviations of the topography of the second surface, in order to reconstruct the topography of the second surface according to the mirror image of the topography of the first surface.

1 . A medical system for assisting in planning and/or performing the reconstruction of usually symmetrical body parts of a patient, comprising:
 at least one measuring unit for measuring a first area and a second area in order to establish a topography of the first area and the second area;   a storage unit for storing the established topographies of the first area and the second area;   an evaluation unit for establishing a mirror image of the stored topography of the first area and for calculating deviations between the stored topography of the second area and the mirror image of the stored topography of the first area; and   a control unit for outputting guidance information for at least one medical instrument on the basis of the calculated deviations in the topography of the second area from the mirror image of the stored topography of the first area in order to reconstruct the topography of the second area in accordance with the mirror image of the topography of the first area.   
     
     
         2 . The system as claimed in  claim 1 , wherein a data transmission interface for transmitting the topography data of a surface established by the measuring unit to the evaluation unit and/or storage unit. 
     
     
         3 . The system as claimed in  claim 1 , wherein the at least one measuring unit comprises a mechanical sensing device for mechanically sensing an area, wherein the mechanical sensing device can be integrated in a position detection system such that position data from a sensing tip of the sensing device are establishable by the position detection system and displayable on a display unit. 
     
     
         4 . The system as claimed in  claim 3 , wherein the mechanical sensing device comprises a pointer with an at least partly spherically shaped instrument tip. 
     
     
         5 . The system as claimed in  claim 1 , wherein at least one measuring unit comprises an optical sensing device for optically sensing an area. 
     
     
         6 . The system as claimed in  claim 5 , wherein the optical sensing device comprises a laser, a video device and/or a photocell and wherein the image data established by the optical sensing device are displayable on a display unit. 
     
     
         7 . The system as claimed in  claim 1 , wherein at least one medical instrument is embodied as a balloon catheter which, in accordance with the guidance information output by the control unit, is fillable with a work fluid. 
     
     
         8 . The system as claimed in  claim 7 , wherein the system has at least one sensor for detecting the internal pressure and/or the extent of the balloon catheter. 
     
     
         9 . The system as claimed in  claim 8 , wherein the control unit is embodied to control the filling of the balloon catheter taking into account the data established by the sensor. 
     
     
         10 . The system as claimed in  claim 9 , wherein the control unit is configured to control a filling speed of the balloon catheter in a manner dependent on the respective extent and/or on the internal pressure of the balloon catheter, wherein the filling speed is tendentiously intended to decrease with increasing extent or with increasing internal pressure of the balloon catheter. 
     
     
         11 . The system as claimed in  claim 10 , wherein the balloon catheter has a plurality of chambers, wherein the chambers are fillable independently of one another. 
     
     
         12 . The system as claimed in  claim 1 , wherein the evaluation unit is configured to establish deviations in the topography of the second area from the mirrored topography of the first area on the basis of individual representative measurement points on the second area. 
     
     
         13 . The system as claimed in  claim 1 , wherein the measuring unit is embodied to establish the topography of the second area, at least at representative measurement points, during the production or reconstruction of the second area. 
     
     
         14 . The system as claimed in  claim 13 , wherein the control unit adapts the guidance information for at least one medical instrument on the basis of the topography data of the second area established during the reconstruction of the second area. 
     
     
         15 . The system as claimed in  claim 14 , wherein the medical instrument is an active medical instrument, wherein the control unit is embodied to control the operating state of the active medical instrument in a manner dependent on the position of the active medical instrument from the topography of the second area established by the control unit. 
     
     
         16 . The system as claimed in  claim 7 , wherein the balloon catheter has a plurality of chambers, wherein the chambers are fillable independently of one another.