System comprising a medical apparatus and a medical device, medical apparatus and surgical method

Abstract

A system for establishing an anchorage in an operation site of a human or animal patient with the aid of a material having thermoplastic properties and vibration energy. The system includes a transmitting piece connected or connectable to an energy source for generating vibration energy, and a housing with an opening. The transmitting piece is arranged moveably within the housing, the opening being adapted to the transmitting piece for a distal portion of the transmitting piece to be able to protrude from the opening. The system also includes a driver being activatable for exerting a compression force on the transmitting piece, and a thermoplastic element arranged to be compressible between the transmitting piece and a counter element by the compression force. Furthermore, the system is equipped for shock-free initial positioning and pre-pressing of the transmitting piece against the thermoplastic element.

What is claimed is: 
     
         1 . A system for establishing an anchorage in hard tissue or hard tissue replacement material or for augmenting hard tissue in an operation site of a human or animal patient with the aid of a material having thermoplastic properties and vibration energy, of in situ liquefaction of the material having thermoplastic properties, and of displacement of the material having thermoplastic properties in a liquefied state, the system comprising:
 a transmitting piece connected or connectable to an energy source for generating vibration energy,   a housing comprising a distal end and a proximal end and a longitudinal axis extending therebetween and an opening at the distal end, wherein the transmitting piece is arranged within the housing being movable in a direction of the longitudinal axis, and wherein the opening is adapted to the transmitting piece for a distal portion of the transmitting piece to be able to protrude from the opening,   a pneumatic driver suitable for driving the transmitting piece against one of the proximal end and the distal end of the housing, the pneumatic driver being activatable for exerting a compression force to the transmitting piece,   a counter element,   a thermoplastic element arranged to be compressible between the transmitting piece and the counter element by the compression force,   wherein the system is further equipped for shock-free initial positioning and pre-pressing of the transmitting piece against the thermoplastic element by the pneumatic driver being controllable for an initially slow driver force increase.   
     
     
         2 . The system according to  claim 1 , wherein:
 the pneumatic driver is controllable to exert a positioning force and the compression force on the transmitting piece,   the positioning force is smaller than the compression force, and   the initially slow driver force increase comprises, after activation of the pneumatic driver, an increase of the driver force to the positioning force.   
     
     
         3 . The system according to  claim 2 , wherein the pneumatic driver is controllable to exert a pre-compressing force to the transmitting piece prior to exerting the compression force to the transmitting piece. 
     
     
         4 . The system according to  claim 3 , wherein the pre-compressing force corresponds to the positioning force. 
     
     
         5 . The system according to  claim 1 , wherein the pneumatic driver is arranged within the housing. 
     
     
         6 . The system according to  claim 1 , wherein the counter element is connected or connectable to the housing in a stiff manner. 
     
     
         7 . The system according to  claim 6 , wherein the counter element is connected or connectable to the housing in a stiff and removable manner. 
     
     
         8 . The system according to  claim 1 , wherein:
 the thermoplastic element is a pin,   the counter element is a fenestrated sleeve, and   the pin and the sleeve are adapted to each other for the pin to be introducible into the sleeve from a proximal side thereof.   
     
     
         9 . The system according to  claim 1 , wherein:
 the thermoplastic element is a tube,   the counter element is a collar,   the tube and the collar are adapted to the transmitting piece for a distal portion of the transmitting piece to be able to reach through the collar and the tube.   
     
     
         10 . An apparatus suitable for the system according to  claim 1 , the apparatus comprising the transmitting piece, the housing, and the pneumatic driver being controllable for the initially slow driver force increase.