Fuhrungselement und vorrichtung zum einbringen einer knochenbohrung

Abstract

A guide element is constructed for arrangement on a device for the penetrating extension of a blind hole created in hard tissue, in particular in the jawbone, wherein the device includes a hollow body that forms a pressure chamber and that has a distal working opening and an inlet opening opposite the working opening. The guide element can be inserted into the inlet opening with a tight fit and the inlet opening can be closed by the guide element, the guide element has a through-hole, through which a shaft of a working tool, for example, of a milling tool, can be guided and inserted into the hollow body, and the guide element has a connection for a working medium for applying an internal pressure in the pressure chamber or in the hollow body.

What is claimed is:  
     
         1 .- 33 . (canceled) 
     
     
         34 . A guide element for arrangement on a device for perforating extension of a blind bore introduced into hard tissue, in particular into the jaw bone, said device comprising a hollow body forming a pressure chamber with a distal working opening and an inlet opening opposite the working opening, said guide element having a through hole for passage therethrough of a shaft of a working tool into the hollow body, wherein the guide element is constructed for form fitting engagement in the inlet opening of the hollow body of the device, to thereby close the inlet opening, and wherein the guide element has a connection for a working medium for establishing an inner pressure in the pressure chamber or in the hollow body. 
     
     
         35 . The guide element of  claim 34 , wherein the working tool is a milling tool. 
     
     
         36 . The guide element of  claim 34 , wherein the engagement of the guide element in the inlet opening is pressure tight and essentially fluid tight. 
     
     
         37 . The guide element of  claim 34 , wherein the shaft is supported and guided for movement in the through hole in a pressure tight and essentially fluid tight manner. 
     
     
         38 . The guide element of  claim 37 , wherein the movement includes a member selected from the group consisting of a rotating movement, a circulating movement, a tumbling movement and an axial movement. 
     
     
         39 . The guide element of  claim 34 , further comprising a sealing element arranged in the through hole, for further sealing of the shaft. 
     
     
         40 . The guide element of  claim 39 , wherein the sealing element is an O-ring. 
     
     
         41 . The guide element of  claim 34 , constructed one-piece or in one part. 
     
     
         42 . The guide element of  claim 41 , constructed as sterilizable, disposable component. 
     
     
         43 . The guide element of  claim 42 , wherein the guide element is made of plastic. 
     
     
         44 . The guide element of  claim 34 , wherein the through hole is arranged in a disc-shaped head region of the guide element, and wherein the connection is constructed as a socket for connection to a tube line and extends radially, outwardly in a plane of the disc-shaped region. 
     
     
         45 . The guide element of  claim 44 , wherein the through hole is arranged centrally in the disc shaped head region. 
     
     
         46 . The guide element of  claim 34 , wherein a channel is formed in the guide element, said channel being closed from all sides, and connecting the connection with an exit opening leading into the inlet opening. 
     
     
         47 . The guide element of  claim 46 , wherein the channel extends separate from the through hole along its entire extent. 
     
     
         48 . The guide element of  claims 46 , wherein the channel has a first subsection positioned proximate to the connection and extending perpendicular to a central longitudinal axis of the through hole, and a second subsection adjoining the first subsection and extending essentially parallel to the central longitudinal axis of the through hole. 
     
     
         49 . The guide element of  claim 34 , further comprising a projection formed on a side of the guide element which faces the inlet opening during operation. 
     
     
         50 . The guide element of  claim 49 , wherein the projection is configured cylindrical. 
     
     
         51 . The guide element of  claim 49 , wherein a side surface of the projection is surrounded by a sealing element. 
     
     
         52 . The guide element of  claim 51 , wherein the sealing element is constructed as an O-ring. 
     
     
         53 . The guide element of  claims 34 , further comprising a tapered, downwardly open frustrum-shaped sleeve, said sleeve being formed on a side of the guide element which faces the inlet opening during operation, and being centrally traversed by the through hole. 
     
     
         54 . The guide element of  claims 53 , wherein the sleeve directly adjoins the projection, and wherein a greatest diameter of the sleeve is smaller than a diameter of the projection. 
     
     
         55 . The guide element of  claims 34 , wherein a side of the guide element which faces the inlet opening during operation is configured smooth and planar. 
     
     
         56 . The guide element of  claims 34 , further comprising a latching element protruding laterally from the guide element, and constructed for reversible latching engagement into a corresponding latching recess of the sinus lift device. 
     
     
         57 . A device for penetrating extension of a blind bore introduced into hard tissue, in particular the jaw bone, comprising:
 a working tool having a shaft;   a hollow body forming a pressure chamber, said hollow body being constructed for sealing insertion into the blind bore and having a distal working opening proximate to the bone during operation, and an inlet opening opposite the working opening; and   a guide element closing the inlet opening and having a through hole constructed for guiding therethrough the shaft of the working tool into the hollow body, and a connection for connection to a tube line for a working medium for establishing a pressure in the pressure chamber.   
     
     
         58 . The device of  claim 57 , wherein the working tool is constructed as a milling tool. 
     
     
         59 . The device of  claim 57 , wherein the pressure chamber is configured cylindrical. 
     
     
         60 . The device of  claim 57 , wherein the guide element closes the inlet opening and with this the pressure chamber pressure tight and essentially fluid tight, and wherein a pressure of 1.5 bar is achievable inside the pressure chamber. 
     
     
         61 . The device of  claim 60 , wherein the pressure is at least 2.5 bar 
     
     
         62 . The device of  claim 57 , wherein the shaft is supported and guided for movement in the through hole in a pressure tight and essentially fluid tight manner and preferably, a pressure is achievable inside the pressure chamber of at least 1.5 bar, preferably at least 2.5 bar. 
     
     
         63 . The device of  claim 62 , wherein the movement includes a member selected from the group consisting of a rotating movement, a circulating movement, a tumbling movement and an axial movement. 
     
     
         64 . The device of  claims 57 , wherein the guide element is constructed for reversible and non-destructive attachment on, and removal from the hollow body. 
     
     
         65 . The device of clam  57 , further comprising a handle element arranged on the hollow body. 
     
     
         66 . The device of  claim 57 , wherein the guide element is arranged in a recess formed at a distal end of the handle element. 
     
     
         67 . The device of  claim 66 , wherein the handle element is provided with a groove and wherein the tube line extends in the groove. 
     
     
         68 . The device of  claim 67 , wherein the groove is provided with fixing elements. 
     
     
         69 . The device of  claims 57 , further comprising a latching recess, wherein the guide element is fixable in position by reversible, latching engagement in the latching recess through a pivoting motion. 
     
     
         70 . The device of  claims 69 , wherein the latching recess is formed in a border surface of the recessed region. 
     
     
         71 . The device of  claims 69 , wherein the guide element is engagable in the latching recess by pivoting about the through hole as rotation axis by 30° to 50°. 
     
     
         72 . The device of  claim 57 , wherein the guide element is insertable with the projection into the inlet opening in a fluid tight manner, in particular up to a projecting stop. 
     
     
         73 . The device of  claim 57 , wherein a portion of the inlet opening is configured in the form of a hollow funnel shaped region that conically narrows from a broader starting region. 
     
     
         74 . The device of  claim 57 , wherein the outer walling of the sleeve is spaced apart from the funnel shaped inner walling of the entry opening. 
     
     
         75 . The device of  claim 57 , further comprising a flange on an outside of the hollow body, said flange being adjustable along the hollow body and detachably fastenable to the hollow body and having a sealing portion, said sealing portion reaching between the hollow body and a walling of the blind bore. 
     
     
         76 . The device of  claim 75 , wherein the sealing portion is configured conical. 
     
     
         77 . The device of  claim 57 , further comprising an elastic bellow arranged between the guide element and the working tool. 
     
     
         78 . The device of  claim 57 , wherein the working tool comprises a rotating shaft. 
     
     
         79 . The device of  claim 78 , wherein the working tool is constructed as a milling tool, or a rotation free working tool. 
     
     
         80 . The device of  claim 79 , wherein the rotation-free working tool is constructed as an ultrasound-Osteotome or a laser cutting tool. 
     
     
         81 . The device of  claim 57 , further comprising a manual or automatic pressure control unit, connected with the device via the connection. 
     
     
         82 . The device of  claim 57 , wherein the device further comprises a device for generating or transmitting mechanical or electromagnetic vibrations to the working medium in the pressure chamber. 
     
     
         83 . The device of  claim 57 , wherein a diameter of the shaft decreases stepwise toward a drill head of the working tool, wherein the shaft has a first subsection located in the pressure chamber and a second subsection lying sealingly in a region of the through hole, and wherein the first subsection has a smaller diameter than the second subsection. 
     
     
         84 . The device of  claim 57 , wherein the milling tool has a drill head, said drill head having a tip with a small surface and a strong curve, to ensure a punctiform and small-surfaced penetration through the bone plate. 
     
     
         85 . A set, comprising:
 the guide element of  claim 34 ;   at least one tube line;   and a syringe, wherein the guide element, the tube line and the syringe are sterilized and packaged aseptically in a closed container, preferably a plastic bag.