Medicinal or dental hand instrument

Abstract

In a medicinal or dental hand instrument ( 1 ) comprising a hand piece ( 2 ) and a handle ( 6 ) arranged on the hand piece ( 2 ), an outlet opening ( 5 ), arranged on the front side of the handle ( 6 ), for the outlet of an abrasive therapeutic agent and a transport fluid, and a coupling terminal ( 4 ) for coupling the hand instrument ( 1 ) to a supply line for at least one transport fluid, in particular water and/or air, wherein the coupling terminal ( 4 ) is a coupling component ( 14 b ) of a coupling ( 13 ), the coupling component ( 14 b ) is arranged on an insert piece ( 20 ) which can be plugged into a plug-in socket or plug-in recess ( 19 ) and in its end zone, facing away from the flow, has one or more coaxially or paraxially disposed, sealed pipe socket couplings ( 10 ), which each connect a feed line ( 9, 11 ) for the transport fluid to an ongoing feed line ( 21, 22 ).

1 . A medicinal or dental hand instrument ( 1 ) comprising 
 a hand piece ( 2 ) and a handle ( 6 ) arranged on the hand piece ( 2 ),    an outlet opening ( 5 ), arranged on the front side of the handle ( 6 ), for the outlet of an abrasive therapeutic agent and a transport fluid    and a coupling terminal ( 4 ) for coupling the hand instrument ( 1 ) to a supply line for at least one transport fluid, in particular water and/or air    wherein the coupling terminal ( 4 ) is a coupling component ( 14   b ) of a coupling ( 13 ),    wherein the coupling component ( 14   b ) is arranged on an insert piece ( 20 ) which can be plugged into a plug-in socket or plug-in recess ( 19 ) and which in its end zone facing away from the flow comprises one or more coaxially or paraxially disposed, sealed pipe socket couplings ( 10 ), which each connect a feed line ( 9 ,  11 ) for the transport fluid to an ongoing feed line ( 21 ,  22 ).    
     
     
         2 . A hand instrument as claimed in  claim 1 , wherein pipe sockets ( 17 ,  18 ) project from the insert piece ( 20 ), said pipe sockets in each case extending in an ongoing feed line channel ( 21 ,  22 ).  
     
     
         3 . A hand instrument as claimed in  claim 1 , wherein the coupling ( 13 ) is formed by a plug-in coupling with a plug-in pin ( 14   a ) and a plug-in recess ( 14   b ) which accommodates said pin, the plug-in recess ( 14   b ) being arranged in the insert piece ( 20 ) or in the coupling component which forms part of the supply line.  
     
     
         4 . A hand instrument as claimed in  claim 1 , wherein the feed line or feed lines ( 9 ,  11 ) pass through the separating gap between the coupling pin ( 14   a ) and the component comprising the coupling recess ( 14   b ) in a Z-formation at penetration points, and the penetration points are sealed on both sides by a respective sealing ring ( 16 ).  
     
     
         5 . A hand instrument as claimed in  claim 1 , wherein the coupling terminal ( 4 ) is arranged laterally on the hand piece ( 2 ).  
     
     
         6 . A hand instrument as claimed in  claim 5 , wherein the central axis of the coupling terminal and the longitudinal central axis ( 10 ) of the hand piece ( 2 ) form a right angle or a forwardly directed acute angle (W).  
     
     
         7 . A hand instrument as claimed in  claim 1 , wherein a plurality of insert pieces ( 20 ) are provided which match differently constructed or shaped coupling components associated with the supply line.  
     
     
         8 . A hand instrument as claimed in  claim 1 , wherein it comprises a storage container ( 3 ) for the abrasive therapeutic agent, in particular powder, which is connected to the feed line ( 9 ,  11 ), the storage container ( 3 ) preferably being arranged in the rear region of the hand instrument ( 1 ).  
     
     
         9 . A hand instrument as claimed in  claim 8 , wherein the coupling terminal ( 4 ) as a whole, or at least the base region of the coupling terminal ( 4 ), is forwardly offset relative to the storage container ( 3 ).  
     
     
         10 . A hand instrument as claimed in  claim 1 , wherein the coupling terminal ( 4 ) has two feed lines ( 9 ,  11 ), preferably one for the therapeutic liquid, in particular water, and the other for a gas, in particular air.  
     
     
         11 . A hand instrument as claimed in  claim 10 , wherein the feed line ( 9   b ) for gas is arranged at the rear of the feed line ( 11   a ) for therapeutic liquid.  
     
     
         12 . A hand instrument as claimed in  claim 8 , wherein the storage container ( 3 ) is arranged at the rear end of the hand piece ( 2 ), and in particular coaxially with the handle ( 6 ), and preferably forms the rear end.  
     
     
         13 . A hand instrument as claimed in  claim 8 , wherein the storage container ( 3 ) has a detachable cover ( 61 ), the separating gap of the cover ( 61 ) extending preferably transversely, and in particular at right angles, to the longitudinal central axis ( 10 ) of the hand instrument ( 1 ).  
     
     
         14 . A hand instrument as claimed in  claim 8 , wherein a feed line ( 9 ) for the transport fluid extends into the storage container ( 3 ) with a preferably axial inlet pipe ( 65 ), and in particular terminates in the central region of said container.  
     
     
         15 . A hand instrument as claimed in  claim 8 , wherein a feed line ( 9 ) for the transport fluid issues from the storage container ( 3 ) with an outlet pipe ( 34 ) which projects into the storage container ( 3 ), and preferably, projects into the central region of said container.  
     
     
         16 . A hand instrument as claimed in  claim 14 , wherein the inlet pipe ( 65 ) preferably extends rearwards from the rear end of the hand piece ( 2 ) into the storage container ( 3 ) and the outlet pipe ( 34 ) is arranged coaxially, and in particular is arranged in the inlet pipe ( 65 ).  
     
     
         17 . A medicinal or dental hand instrument ( 1 ) comprising 
 a hand piece ( 2 ) and a handle ( 6 ) arranged on the hand piece ( 2 )    an outlet opening ( 5 ), arranged on the front side of the handle ( 6 ), for the outlet of an abrasive therapeutic agent and a transport fluid    and a coupling terminal ( 4 ) for coupling the hand instrument ( 1 ) to a supply line for at least one transport fluid, in particular water and/or air    or a hand instrument as claimed in one of the preceding claims,    wherein in its front zone the hand piece ( 2 ) has a handle ( 6 ) from which the shaft ( 7 ) extends rearwards, and that the handle ( 6 ) and the shaft ( 7 ) are mounted one beside another so as to be freely rotatable about their longitudinal central axis ( 10 ).    
     
     
         18 . A hand instrument as claimed in  claim 17 , wherein the handle ( 6 ) has a rear sleeve attachment ( 81 ) and the shaft ( 7 ) has a front sleeve attachment ( 82 ), the sleeve attachments ( 81 ,  82 ) engaging coaxially over one another with a small movement play, and the sleeve attachment ( 82 ) of the shaft ( 7 ) preferably engaging over the sleeve attachment ( 81 ) of the handle ( 6 ).  
     
     
         19 . A hand instrument as claimed in  claim 17 , wherein the handle ( 6 ) and the shaft ( 7 ) are held together by a fast-acting connection, preferably a locking connection ( 83 ).  
     
     
         20 . A medicinal or dental hand instrument ( 1 ) comprising 
 a hand piece ( 2 ) and a handle ( 6 ) arranged on the hand, piece ( 2 )    an outlet opening ( 5 ), arranged on the front side of the handle ( 6 ), for the outlet of an abrasive therapeutic agent and a transport fluid    and a coupling terminal ( 4 ) for coupling the hand instrument ( 1 ) to a supply line for at least one transport fluid, in particular water and/or air    or a hand instrument as claimed in one of the preceding claims,    wherein the hand instrument ( 1 ), together with a plurality of abrasive therapeutic agents having different removing capacities and arranged in storage containers, form a therapeutic device.    
     
     
         21 . A medicinal or dental hand instrument ( 1 ) comprising a hand piece ( 2 ) and a handle ( 6 ) arranged on the hand piece ( 2 ) 
 an outlet opening ( 5 ), arranged on the front side of the handle ( 6 ), for the outlet of an abrasive therapeutic agent and a transport fluid    and a coupling terminal ( 4 ) for coupling the hand instrument ( 1 ) to a supply line for at least one transport fluid, in particular water and/or air,    or a hand instrument as claimed in one of the preceding claims,    wherein the outlet opening ( 5 ) is arranged in a hollow needle ( 27 ) or a hollow needle head ( 53 ), which hollow needle or hollow needle head is detachably connected to the hand piece ( 2 ) by a fast-acting connection, in particular a bayonet connection, or a screw connection, preferably a plurality of hollow needles ( 27 ) or hollow needle heads ( 53 ) with different shapes and/or sizes and/or outlet opening sizes ( 5 ) being provided so as to be exchangeable.    
     
     
         22 . A hand instrument as claimed in  claim 20 , wherein the types of therapeutic agents differ by virtue of a different granule size and preferably three different therapeutic agents are provided for coarse, medium and fine treatment.  
     
     
         23 . A hand instrument as claimed in one of claims  20 , wherein a specified granulation of the therapeutic agent is assigned a specific size of the outlet opening ( 5 ) and the hollow needles ( 27 ) or hollow needle heads ( 53 ) are provided with a mark which identifies the association with the related therapeutic agent, the different types of therapeutic agents preferably having different colours and the hollow needles ( 27 ) or hollow needle heads ( 53 ) being provided with a mark of the associated, same colour.  
     
     
         24 . A medicinal or dental hand instrument ( 1 ) comprising 
 a hand piece ( 2 ) and a handle ( 6 ) arranged on the hand piece ( 2 )    an outlet opening ( 5 ), arranged on the front side of the handle ( 6 ), for the outlet of an abrasive therapeutic agent    and a coupling terminal ( 4 ) for coupling the hand instrument ( 1 ) to a supply line for at least one transport fluid, in particular water and/or air    or a hand instrument ( 1 ) as claimed in one of the preceding claims,    wherein the interior ( 8 ) of the hand piece ( 2 ) is connected by a line connection ( 101 ) to the feed line ( 9 ) for the gas.    
     
     
         25 . A medicinal or dental hand instrument ( 1 ) comprising 
 a hand piece ( 2 ) and a handle ( 6 ) arranged on the hand piece ( 2 )    an outlet opening ( 5 ), arranged on the front side of the handle ( 6 ), for the outlet of an abrasive therapeutic agent    and a coupling terminal ( 4 ) for coupling the hand instrument ( 1 ) to a supply line for at least one transport fluid, in particular water and/or air    or a hand instrument ( 1 ) as claimed in one of the preceding claims    wherein a non-return valve ( 91 ) is arranged in the feed line ( 9   a ) in a position preceding the coupling terminal ( 4 ).    
     
     
         26 . A hand instrument as claimed in  claim 25 , wherein the non-return valve ( 91 ) is arranged in an insert piece ( 2 ) having a coupling component ( 14   b ).  
     
     
         27 . A medicinal or dental hand instrument ( 1 ) comprising 
 a hand piece ( 2 ) and a handle ( 6 ) arranged on the hand piece ( 2 )    an outlet opening ( 5 ), arranged on the front side of the handle ( 6 ), for the outlet of an abrasive therapeutic agent    a coupling terminal ( 4 ) for coupling the hand instrument ( 1 ) to a supply line for at least one transport fluid, in particular water and/or air    and a storage container ( 3 )    into which a feed line ( 66 ) with at least one inlet opening ( 73 ) leads    and which is connected to the outlet opening ( 5 ) provided on the handle ( 6 ) by at least one inner outlet opening ( 74 ) and a connection line ( 9 )    or a hand instrument as claimed in one of the preceding claims,    wherein the inlet opening ( 73 ) and the inner outlet opening ( 74 ) are arranged in the central region of the accommodating chamber ( 64 ) of the storage container ( 3 ).    
     
     
         28 . A hand instrument as claimed in  claim 27 , wherein the feed line ( 66 ) or the connection line ( 9 ) is formed by an annular channel and the respective other line extends coaxially within the annular channel.  
     
     
         29 . A hand instrument as claimed in  claim 27 , wherein the axial distance between the inlet opening ( 73 ) and the outlet opening ( 74 ) is small, and in particular is no greater than approximately 30 mm, preferably no greater than approximately 10 mm to 15 mm.  
     
     
         30 . A hand instrument as claimed in  claim 27 , wherein the inner outlet opening ( 74 ) is arranged behind the inlet opening ( 73 ).  
     
     
         31 . A hand instrument as claimed in  claim 27 , wherein the feed line ( 66 ) and the connection line ( 9 ) are formed by a double sleeve extending into the accommodating chamber ( 64 ) of the storage container ( 3 ).