EP4680150A1 - Hilfsmittel zum einbringen eines dentalimplantats in einen kieferknochen sowie vormontierte einheit aus einem solchen hilfsmittel und einem dentalimplantat - Google Patents
Hilfsmittel zum einbringen eines dentalimplantats in einen kieferknochen sowie vormontierte einheit aus einem solchen hilfsmittel und einem dentalimplantatInfo
- Publication number
- EP4680150A1 EP4680150A1 EP24711831.8A EP24711831A EP4680150A1 EP 4680150 A1 EP4680150 A1 EP 4680150A1 EP 24711831 A EP24711831 A EP 24711831A EP 4680150 A1 EP4680150 A1 EP 4680150A1
- Authority
- EP
- European Patent Office
- Prior art keywords
- aid
- dental implant
- cylindrical part
- proximal end
- aid according
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Pending
Links
Classifications
-
- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61C—DENTISTRY; APPARATUS OR METHODS FOR ORAL OR DENTAL HYGIENE
- A61C8/00—Means to be fixed to the jaw-bone for consolidating natural teeth or for fixing dental prostheses thereon; Dental implants; Implanting tools
- A61C8/0089—Implanting tools or instruments
Definitions
- the invention relates to an aid for inserting a dental implant into a jawbone by applying a screwing movement to the dental implant, wherein the aid has a rod-shaped configuration along an axis and has a proximal end section that can be brought into engagement with the dental implant, and a distal end section opposite the proximal end section, wherein first means for transmitting a torsional force to the dental implant are arranged in the region of the proximal end section.
- the invention further relates to a prefabricated unit comprising such an aid and a dental implant.
- Implant systems are widely used in the field of dental implantology. They usually include a dental implant that is anchored in the jawbone of a patient, as well as an abutment that can be attached to the dental implant and serves as a support for a dental prosthesis or the like.
- a hole is first drilled into the jawbone, into which the dental implant is screwed or tapped in, either self-tapping or non-self-tapping, until the exact position in the jawbone is reached.
- the torque required for the screwing process is applied to the dental implant using a rod-shaped screwing tool.
- the screwing tool has an external contour at its proximal end, for example a triangle, hexagon or Hexagonal, which engages positively in a corresponding recess on the dental implant.
- a rotary drive is connected to the distal end of the insertion tool, which generates the pressure and screwing force required for insertion.
- the dental implant does not provide sufficient support for the dental implant, for example if the bone density is too low, there is a risk that the dental implant will be screwed in too far when inserted into the hole or will break into the maxillary sinus. In this case, the dental implant can only be screwed back as long as the external thread of the dental implant is in frictional connection with the jawbone. Otherwise, the dental implant will remain in the maxillary sinus when the screwing tool is withdrawn and can only be removed surgically, which is an event that should be avoided if possible for both the patient and the treating dentist.
- the object of the invention is to provide an aid for inserting dental implants into a jawbone, which, if necessary, enables the dental implant to be removed from the maxillary sinus or the position of the dental implant in the jawbone to be corrected without surgical intervention.
- a unit consisting of a dental implant and such an aid, wherein the dental implant and the aid can be connected to one another via the first means and second means.
- the invention is based on the basic idea of expanding the functionality of known screwing tools so that they can not only be used to insert a dental implant into a jawbone, but also to remove it again if necessary.
- the inventive further development of known screwing tools creates an aid that combines the two functions of "inserting a dental implant” and “removing a dental implant” or “correcting the position of a dental implant” as long as the dental implant has not yet grown in. It has been recognized that the known connection between the dental implant and the screwing tool for transmitting torsional forces, based on a positive locking mechanism, needs to be supplemented with the option of transmitting tensile forces. Both functions are then available for removing or correcting the position of a dental implant, and their interaction ensures the desired success.
- the dental implant in an emergency, can be removed immediately by the dentist during the dental treatment without having to perform a surgical procedure.
- the physical and psychological stress for the patient and the treating The costs for the doctor therefore remain comparatively low and the costs for removing the dental implant are reasonable.
- an aid according to the invention proves to be particularly advantageous, since the aid is already force-fitted to the dental implant when the emergency occurs and is therefore immediately ready for use in an emergency.
- a further advantage of the invention is apparent when removing a dental implant from the sterile packaging before it is inserted into the jawbone. Since the dental implant is removed using the aid, the traction-transmitting connection prevents the dental implant from accidentally coming loose and falling before it is inserted into the jawbone, which would make it no longer sterile and therefore unusable. The risk of the patient swallowing or aspirating the dental implant is also prevented.
- Fig. 1a and 1b a first embodiment of an aid according to the invention in longitudinal and cross-section
- FIG. 2a and 2b a second embodiment of an aid according to the invention in longitudinal and cross-section
- FIG. 3a and 3b a third embodiment of an aid according to the invention in
- Fig. 4a and 4b show a fourth embodiment of an aid according to the invention in longitudinal and cross-section
- Fig. 5a and 5b show a fifth embodiment of an aid according to the invention in longitudinal and cross-section
- FIG. 6a and 6b a sixth embodiment of an aid according to the invention in longitudinal and cross-section
- Fig. 7a and 7b a seventh embodiment of an aid according to the invention in longitudinal and cross-section
- Fig. 8a and 8b an eighth embodiment of an aid according to the invention in longitudinal and cross-section
- Fig. 9a and 9b show a ninth embodiment of an aid according to the invention in longitudinal and cross-section.
- anterior and distal refer to the dental implant 1 and designate a position or direction that is associated with the jawbone or a position or direction that is associated with the dental prosthesis to be attached to the dental implant 1.
- proximal and distal are used in connection with the aid 2 according to the invention and designate a position or direction that is associated with the dental implant 1 or a position or direction that is facing away from the dental implant 1.
- Fig. 1 a to 9b show various embodiments of an aid 2.1 to 2.9 according to the invention, all of which are characterized by the ability to transmit not only the torque required for screwing in a dental implant 1 but also sufficient tensile forces to the dental implant 1 in order to remove it safely and reliably from the jawbone or the To remove the maxillary sinus or to correct its position.
- the dental implants 1.1 to 1.9 of the different embodiments are largely identical, so that the description with regard to identical features applies to all embodiments without explicitly repeating them each time.
- the embodiments according to the invention according to Figs. 1a to 5b have in common that the dental implants 1.1 to 1.5 have an axially extending threaded bore for transmitting a tensile force, into which the aids 2.1 to 2.5 can be screwed with a threaded section as second means 27.1 to 27.5.
- the aids 2.6 to 2.9 according to the invention according to Figs. 6a to 9b relate to embodiments in which a locking with radially extending recesses in the receiving space 7 is effected by means of radially adjustable second means 27.6 to 27.9, which is suitable for transmitting tensile forces between the aids 2.1 to 2.9 and dental implants 1.6 to 1.9.
- Fig. 1 a and 1 b show a first embodiment of the invention, a dental implant 1.1 and an aid 2.1 according to the invention, which are shown separated from one another along their common longitudinal axis 3.
- the dental implant 1.1 and aid 2.1 are axially joined together and connected, whereby both torsional forces and tensile forces can be transmitted in the connection area.
- the dental implant 1.1 extending along the axis 3 has an approximately peg or dowel-shaped form with an apical end 4, which is intended for anchoring in a jawbone, and a coronal end 5, which serves for the frictional fastening of an abutment (not shown in more detail).
- the dental implant 1.1 is tapered towards the apical end 4 over approximately half of its axial length and in this area has threads 6 running around the outer circumference, by means of which the dental implant 1.1 can be screwed into a jawbone.
- the dental implant 1.1 consists of a ceramic material such as zirconium oxide ceramic or a metal such as titanium, titanium oxide or a titanium alloy.
- the dental implant 1 .1 has a receiving space 7 extending from the coronal end 5 for receiving an abutment (not shown in more detail).
- the receiving space 7 is essentially symmetrical to the axis 3 and ends in the form of a blind hole at an axial distance from the apical end 4.
- the receiving space 7 is subdivided into several coaxially successive functional sections and begins from the coronal end 5 with a conical section 8, the circumferential contour of which tapers conically towards the apical end 4.
- a cylindrical form-fitting section 9 which in the present embodiment is formed by a coaxially running hexagon socket 10, but can also have other cross-sectional shapes, provided that these are suitable for transmitting torsional forces with respect to the axis 3.
- the form-fitting section 9 merges into an anchoring section 11, which in this embodiment is provided with an internal thread 12 over its axial length.
- the anchoring section 11 is intended to clamp the abutment inserted into the receiving space 7 of the dental implant 1.1 against the dental implant 1.1 by means of a screw engaging in the internal thread 12 when attaching the dental prosthesis to the dental implant 1.1.
- the aid 2.1 has a rod-shaped configuration with a proximal end 13, which is associated with the dental implant 1.1, and a distal end 14 opposite it, wherein the longitudinal extension direction of the aid 2.1 runs parallel to the axis 3.
- the aid 2.1 is designed in several parts with a cylindrical part 15.1 with a circular cross-section and a hollow cylindrical part 16.1, wherein the cylindrical part 15.1 is received in a form-fitting manner in the hollow cylindrical part 16 and is mounted therein so as to be rotatable about the axis 3.
- the hollow cylindrical part 16.1 has a casing sleeve 17.1 coaxial with the axis 3, into which a bearing bush 18 is coaxially inserted in a non-displaceable and rotationally fixed manner, which in turn has a through-channel 19.1 drilled over its entire length coaxial with the axis 3.
- the casing sleeve 17.1 has an inwardly facing circumferential collar 20 which reduces the size of the front casing sleeve opening 21 at the proximal end 13.
- the bearing bush 18 maintains a clear axial distance from the proximal end 13 of the casing sleeve 17.1, forming a circular cylindrical cavity 22, which serves to accommodate the cylindrical part 15.1.
- the opposite distal end 14 of the bearing bush 18 has a head 23 with a connection geometry which enables the attachment of a rotary drive with which the complete hollow cylindrical part 16.1 can be set in rotation about the axis 3.
- the outer circumference of the hollow cylindrical part 16.1 has, at least in the area of the proximal end 13, first means 24.1 for transmitting a torsional force to the dental implant 1.1.
- the outer circumference is adapted to the geometry of the form-fitting section 9 of the dental implant 1.1 in that the outer circumference of the hollow cylindrical part 16.1 has the contour of a correspondingly shaped external hexagon 25 in cross section.
- the circumferential free edge at the proximal end 13 of the hollow cylindrical part 16.1 can also be chamfered in order to facilitate the threading of the aid 2.1 into the dental implant 1.1.
- the cylindrical part 15.1 of the aid 2.1 has a bolt 26.1 which is aligned coaxially to the axis 3 and which is arranged with its larger diameter longitudinal section within the cavity 22 so that it can rotate and is held axially between the collar 20 and the bearing bush 18.
- the smaller diameter longitudinal section of the bolt 26.1 passes axially through the jacket sleeve opening 21 and has second means 27.1 at its proximal end for transmitting a tensile force between the aid 2.1 and the dental implant 1.1.
- the second means 27.1 are formed by an external thread 28 with which the cylindrical part 15.1 can be screwed into the internal thread 12 of the dental implant 1.1.
- a pin 29.1 protrudes from the opposite rear side of the bolt 26.1 coaxially to the axis 3 and is rigidly connected to the bolt 26, for example by soldering, gluing, screwing, etc.
- the pin 29.1 is arranged rotatably in the through-channel 19.1 of the bearing bush 18 and extends beyond its distal end 14.
- the cylindrical part 15.1 is thus accommodated in the hollow cylindrical part 16.1 in a freely rotatable manner.
- the aid 2.1 is inserted with its proximal end 13 into the receiving space 7 of the dental implant 1.1.
- the bolt 26.1 with its external thread 28 is screwed into the anchoring section 11, which is symbolized by the arrow 30.
- the hollow cylindrical part 16.1 is drawn with its proximal end 13 into the form-fitting section 9, whereby the first means 24.1 in the form of the external hexagon 25 engages in a form-fitting manner in the internal hexagon 10 of the dental implant 1.1.
- the second embodiment according to Fig. 2a and 2b differs from the first embodiment only in partial areas of the cylindrical part 15.2, the pin 19.2 of which in the second embodiment is not rigidly and permanently connected to the bolt 26.2, but is inserted with its proximal end in a form-fitting and detachable manner into a coaxial blind hole 32 in the bolt 26.2.
- the torsional force-transmitting form-fitting connection is produced via complementary cross-sections of the axially overlapping sections, such as square, hexagon, star shape and the like.
- the pin 19.2 has a thickening 34 on its protruding distal end to make it easier to grip and rotate the pin 19.2.
- the detachable plug connection allows the pin 19.2 to be axially removed from the aid 2.2 after the tensile connection of the aid 2.2 to the dental implant 1.2 has been made as described above via the second means 27.
- This makes it easier to couple a rotary drive to the head 23 of the hollow cylindrical part 16 and the handling of the aid 2.2 in the oral cavity of a patient during the screwing in of the dental implant 1.2 is not hindered by the protruding part of the pin 19.2.
- Figs. 1a and 1b please refer to the explanations given in Figs. 1a and 1b.
- Fig. 3a and 3b is a third embodiment of an aid 2.3 according to the invention for inserting a dental implant 1.3.
- the dental implant 1.3 is identical to the dental implant 1.1, so that the statements there apply accordingly.
- the aid 2.3 is again made up of several parts with a hollow cylindrical part 16.3 and a cylindrical part 15.3 mounted axially displaceably therein and secured against rotation.
- the hollow cylindrical part 16.3 essentially consists of a casing sleeve 17.3 with an outer circumference in the form of an external hexagon 25, which, as described in Fig. 1a and 2a, embodies the first means 24.3 for transmitting a torsional force to the dental implant 1.3.
- the inner circumference 33 of the casing sleeve 17.3 follows the outer circumference and therefore also has a hexagonal cross-section, which extends over the entire length of the jacket sleeve 17.3 and thus defines a through-channel 19.3 with a constant cross-section.
- a knurled ring disk 35 sits coaxially and rotates on the distal end of the jacket sleeve 17.3.
- the cylindrical part 15.3 essentially consists of a bolt 26.3, at the proximal end 13 of which the second means 27.3 are arranged in the form of an external thread 28 and at the distal end of which a head 23 for coupling to a rotary drive.
- the bolt 26.3 has a constant cross-section with an outer circumference 37 that is complementary to the inner circumference 33 of the casing sleeve 17.3, which means in the present embodiment that the outer circumference 37 also has a hexagonal cross-section.
- the positive connection between the inner circumference 33 and the outer circumference 37 forms an anti-twisting device that prevents relative twisting between the hollow cylindrical part 16.3 and the cylindrical part 15.3 and thus enables the transmission of torsional forces between these parts.
- an axial adjustment of the hollow cylindrical part 16.3 on the cylindrical part 15.3 in the direction of the arrow 38 is possible.
- a frictional engagement element 60 can be arranged, for example, in a recess on the inner circumference 33 of the hollow cylindrical part 16.3, which is in frictional engagement with the outer circumference of the cylindrical part 15.3 and forms a certain resistance to a relative movement of the two parts 15.3, 16.3.
- the cylindrical part 15.3 When using the tool 2.3, the cylindrical part 15.3 is inserted with its proximal end into the receptacle 7 of the dental implant 1.3.
- the hollow cylindrical part 16.3 is in a position opposite the cylindrical part
- FIG. 3c A variant of this embodiment is shown in Fig. 3c, in which the proximal end section 61 of the cylindrical part 15.3' can be rotated relative to the rest of the cylindrical part 15.3' to form a safety coupling.
- a bearing pin 62 coaxial with the axis 3 protrudes from the end face of the cylindrical part 15.3', which engages in a corresponding bore in the end section 61 and is rotatably mounted there, but is secured against axial displacement in the end section 61.
- the end section 61 and the cylindrical part 15.3' maintain an axial distance in which a slip or locking body coupling 63 is arranged.
- the slip or locking body coupling 63 prevents the end section 61 or the cylindrical part 15.3' from breaking if too much torque is applied in the screwing direction of the dental implant 1.
- Fig. 4a and 4b relate to a fourth embodiment of an aid 2.4 according to the invention for inserting a dental implant 1.4 into a jawbone.
- the dental implant 1.4 is similar to those described in Fig. 1a to 3b, so reference is again made to the explanations there.
- cylindrical part 15.4 differs from modifications to the cylindrical part 15.4 and hollow cylindrical part 16.4 of the aid 2.4.
- Its cylindrical part 15.4 in turn has a continuous bolt 26.4, at the proximal end of which the second means 27.4 are arranged in the form of an external thread 28, and whose distal end has a head 23 designed in a known manner for coupling to a rotary drive.
- the cylindrical part 15.4 differs from the embodiments described above by a sudden change in cross-section 40 in the area of the shaft 36.
- the bolt 26.4 has a smaller diameter in the proximal longitudinal section and a larger diameter in its distal longitudinal section, with the widening of the diameter being in the area of the proximal half of the bolt 26.4.
- At least one, preferably two or more guide grooves 39 are arranged in the shaft section with a larger diameter, which run parallel to the axis 3 on the outer circumference of the cylindrical part 15.4.
- the hollow cylindrical part 16.4 in turn comprises a casing sleeve 17.4 with an annular disk 35 running around the outer circumference at the distal end.
- the casing sleeve 17.4 encloses a through-channel 19.4, the inner contour of which, with the exception of the guide grooves 39, is adapted to the outer contour of the cylindrical part 15.4, i.e. is complementarily shaped in longitudinal section and cross section.
- the casing sleeve 17.4 also has a sudden change in diameter 40 in the area of its proximal end section and continues with a larger diameter to the distal end of the casing sleeve 17.4.
- the outer circumference of the casing sleeve 17.4 is provided with an external hexagon 25 to form first means 24.4, which can be brought into engagement with the form-fitting section 9 of the dental implant 1.4 as described above.
- the through-channel 19.4 serves to accommodate the cylindrical part 15.4 in an axially displaceable manner, whereby the sudden change in cross-section 40 limits the relative displacement of the hollow cylindrical part 16.4 on the cylindrical part 15.4 in the distal direction.
- an unhindered free displacement of the hollow cylindrical part 16.4 in the proximal direction is possible.
- two guide pins 41 extend in the radial direction through the wall of the casing sleeve 17.4, each of which protrudes beyond the inner circumference of the hollow cylindrical part 16.4 and engages with the protrusion in the guide groove 39.
- the guide groove 39 and the guide pin 41 interact to form an anti-twisting device that prevents the hollow cylindrical part 16.4 and the cylindrical part 15.4 from twisting relative to one another, but transmits torsional forces between these parts.
- the handling of the aid 2.4 essentially corresponds to the third embodiment described in Fig. 3a and 3b, so that what is said there applies accordingly.
- FIG. 5a and 5b A fifth embodiment of an aid 2.5 according to the invention in combination with a dental implant 1.5 is shown in Fig. 5a and 5b.
- the dental implant 1 .5 corresponds in its design to that described in Figs. 1 a to 4a, so that repetition is unnecessary.
- the aid 2.5 also includes a cylindrical part 15.5, which is axially displaceable and rotationally held in a hollow cylindrical part 16.5.
- the hollow cylindrical part 16.5 has a casing sleeve 17.5, which encloses a through-channel 19.5.
- the outer circumference of the hollow cylindrical part 16.5 is shaped as an external hexagon 25, at least in the proximal end section, to form a first means 24.5.
- the opposite distal end of the hollow cylindrical part 16.5 is formed by a shaft stub 42, which is rotationally inserted over part of its length into the through-channel 19.
- the free end of the shaft stub 42 corresponds in form and function to the head 23 for coupling a rotary drive.
- a bolt 26.5 is held longitudinally displaceably in the through hole 19.5, the free end of which is provided with an external thread 28 in the manner already described, which forms the second means 27.5 for transmitting a tensile force.
- the longitudinal section of the bolt 26.5 located within the through-channel 19 is provided with a slot 43 that is continuous in the transverse direction and limited on both sides in the axial direction.
- the slot 43 is penetrated by a transverse pin 44, the ends of which are rigidly anchored in the wall of the casing sleeve 17.5.
- the bolt 26.5 can be pushed back and forth within the through-channel 19.5 by the axial length of the slot 43.
- the slot 43 and the cross pin 44 interact to form an anti-twisting device that prevents relative twisting of the hollow cylindrical part 16.5 and the cylindrical part 15.5, but transmits torsional forces between these parts.
- the bolt 26.5 ends with its distal end face at a clear axial distance from the shaft stub 42.
- the jacket sleeve 17.5, bolt 26.5 and shaft stub 42 form a cylindrical cavity in which a spring element 45 is arranged, which preloads the bolt 26.5 in the direction of the proximal end.
- the aid 2.5 is introduced into the receiving space 7 of the dental implant 1.5.
- a rotational movement 23 is transmitted via the head 23 to the casing sleeve 17.5 and then via the anti-twist device to the bolt 26.5, whereby the external thread 28 engages in the internal thread 12 of the anchoring section 11 and a tensile force-transmitting connection is established.
- FIG. 6a and 6b A sixth embodiment of an aid 2.6 according to the invention is shown in Fig. 6a and 6b.
- the dental implant 1.6 also shown there corresponds to the previously described dental implants 1.1 to 1.5, so that reference is made to the content there to avoid repetition.
- the essential component of the tool 2.6 is a rod-shaped hollow cylindrical part
- the hollow cylindrical part 16.6 has a through-channel 19.6 drilled coaxially to the axis 3, in which a rod 50 is mounted so as to be axially displaceable.
- the cross-section of the rod 50 corresponds approximately to the cross-section of the through-channel
- the rod 50 essentially fills the through-channel 19.6.
- the rod 50 protrudes beyond the end of the hollow cylindrical part 16.6.
- the rod 50 ends in the area of the outlet opening 51 of the through-channel 19.6, whereby this end can be moved beyond the outlet opening 51 by axially adjusting the rod 50.
- the maximum adjustment dimension is limited by a stop ring 52 at the distal end of the rod 50.
- Three spring tongues 53 protrude from the proximal end face of the hollow cylindrical part 16.6, which are arranged at a uniform circumferential distance around the outlet opening 51 of the through-channel 19.6 and are inclined in the direction of the freely projecting ends towards the axis 3 in such a way that the free Ends of the spring tongues 53 lie within the alignment of the through-channel 19.6.
- the spring tongues 53 with the locking cams 54 form the second means 27.6 for transmitting a tensile force between the dental implant 1.6 and the aid 2.6.
- the aid 2.6 When handling the aid 2.6, it is inserted with its proximal end 13 in the distal direction into the receiving space 7 of the dental implant 1.6.
- the rod 50 is retracted so far that its proximal end is still within the through-channel 19.6, so that the spring tongues 53 are inclined radially inwards in a stress-free state.
- the aid 2.6 is pushed in axially, the external hexagon 25 enters the internal hexagon 10 of the form-fitting section 9 and the spring tongues enter the area of the internal thread 12 of the anchoring section 11.
- the rod 50 is pushed axially into the through-channel 19.6, with the proximal rod end emerging from the outlet opening 51 and spreading the elastic spring tongues 53 radially outwards.
- the locking cams 54 engage in the threads of the internal thread 12 and cause a frictional connection for the transmission of tensile forces.
- a seventh embodiment of an aid 2.7 according to the invention is disclosed in Figs. 7a and 7b.
- the special feature of this embodiment is based on a modified structure of the dental implant 1.7, which in the anchoring section 11.7 additionally has an annular groove 55 coaxial to the axis 3 between the internal thread 12 and the form-fitting section 9.
- aids 2.1 to 2.6 according to the invention, which transmit a tensile force via the internal thread 12 of the anchoring section 1, or aids 2.7 to 2.9, which interact with the annular groove 55 to transmit a tensile force.
- the aid 2.7 represents a modification of the one described in Fig. 6a and 6b, so that to the extent that there are similarities, what has been said about the previously described embodiment applies accordingly.
- the aid 2.7 also has a hollow cylindrical part 16.7 with a head 23 at the distal end and a through-channel 19.7 coaxial with the axis 3 with an outlet opening 51.
- the spring tongues 53.7 therefore have a thickness in the radial direction that extends from the circumference of the outlet opening 51 to the outer circumference of the hollow cylindrical part 16.7, with the outer sides of the spring tongues 53.7 and the outer circumference of the hollow cylindrical part 16.7 merging into one another without a step.
- locking cams 54.7 protrude radially from their outer side, which in turn function as locking elements 57.7 and together with the spring tongues 53.7 form the second means 27.7.
- the spring tongues 53.7 are arranged at a uniform circumferential distance around the axis 3 and are also inclined in the proximal direction towards the axis 3.
- the handling of the aid 2.7 corresponds to that of the aid 2.6, with the difference that the spring tongues 53.7 only reach as far as the annular groove 55 in the dental implant 1.7 and the locking cams 54.7 lock with the annular groove 55 after the rod 50 has been adjusted.
- Fig. 8a and 8b The subject of Fig. 8a and 8b is an eighth embodiment of an aid 2.8 according to the invention, which is suitable for inserting a dental implant 1.8 as already described under Fig. 1.7, which therefore also has an annular groove 55 coaxial with the axis 3 in the anchoring region 11.
- the aid 2.8 is largely similar to the seventh embodiment in the area of the distal end 14 and accordingly comprises a hollow cylindrical part 16.8 with a hexagonal outer circumference over the axial length and with a through-channel 19.8 in which a rod 50 with stop ring 52 is arranged so as to be axially displaceable.
- the hollow cylindrical part 16.8 is designed as a head 23 for connection to a rotary drive.
- the through-channel 19.8 at the proximal end 13 is in a perpendicular plane to the axis 3, i.e. in radial direction to form a cavity 56 in which spherical locking elements 57.8 are accommodated.
- the cavity 56 consists of three radial channels 58 which extend from the axis 3 to every second circumferential side of the hollow cylindrical part 16.8, i.e. at an angular distance of 120°, and there end in a circular retaining opening 59 which is narrower than the radially inner sections of the radial channels 58. In the area of the axis 3, the radial channels 58 overlap, so that the cavity 56 is approximately star-shaped.
- a spherical locking element 57.8 is loosely held in each radial channel 58 so that a locking element 57.8 can move between a radially outer position and a radially inner position.
- the movement is limited by the narrowed retaining opening 59 such that a locking element 57.8 projects with part of its circumference beyond the outer circumference of the hollow cylindrical part 16.8.
- the rod 50 limit the radial movement of the locking elements 57.8.
- the aid 2.8 is inserted with the rod 50 retracted into the receptacle 7 of the dental implant 1.8 until the locking elements 57.8 are at the level of the annular groove 55.
- the locking elements 57.8 are in a radially inner position without penetrating the outlet openings 51.
- the rod end By axially pushing the rod 50 forward in the proximal direction, the rod end there enters the cavity 56 and displaces the locking elements 57.8 into a radially outer position in which they protrude beyond the outlet openings 51 and engage with their projection in the annular groove 55 of the dental implant 1.8 to create a tensile force-transmitting lock.
- a screwing movement can then be transmitted to the dental implant 1.8 by applying a rotational movement to the hollow cylindrical part 16.8.
- a ninth embodiment of the invention is the subject of Fig. 9a and 9b.
- the dental implant 1.9 of the ninth embodiment has an annular groove 55 for the traction-transmitting connection of an aid 2.9. Due to the similarities between the dental implant 1.9 and the eighth embodiment, reference is made to the statements therein, which apply accordingly.
- the aid 2.9 comprises a hollow cylindrical part 16.9, which is essentially formed by a casing sleeve 17.9 with a through-channel 19.9 coaxial with the axis 3.
- the outer circumference of the casing sleeve 17.9 is designed as an external hexagon 25 at least in the area of the proximal end 13 of the aid 2.9, preferably over its entire length, in order to provide first means 24.9 for forming a rotationally fixed connection with the dental implant 1.9.
- the hollow cylindrical part 16.9 At the distal end 14, the hollow cylindrical part 16.9 in turn has a head 23, which has already been described several times, for connecting a rotary drive.
- the aid 2.9 comprises a cylindrical part 15.9 with a bolt 26.9 which is rotatably mounted in the through-channel 19.9 and projects axially beyond the head 23 with its distal end in order to form a gripping section there with its projection for gripping and rotating the bolt 26.9.
- a disk-shaped locking element 57.9 is fastened to the opposite proximal end of the bolt 26.9 coaxially and in a perpendicular plane to the axis 3.
- the circumference of the locking element 57.9 corresponds in size and shape to the outer circumference of the immediately axially adjacent section of the hollow cylindrical part 16.9 and runs flush with the first means 24.9 in the form of the external hexagon 25, as shown in Fig. 9a in the unlocking position.
- the locking element 57.9 can be rotated about the axis 3 by turning the bolt 26.9 in order to assume a locking position.
- Fig. 9b shows this state in which the disc-shaped locking element 57.9 is rotated by approximately 30° about the axis 3.
- the corners 49 of the hexagonal locking element 57.9 protrude in an axial projection beyond the outer circumference of the hollow cylindrical part 16.9 with the first means 24.7 and can thus be brought into engagement with the annular groove 55 in the anchoring section 11 of the dental implant 1.9.
- a groove 48 of limited length is provided on the inner circumference of the hollow cylindrical part 16.9, which forms the through-channel 19.9 and runs concentrically around the axis 3.
- a pin 47 is arranged, which projects radially beyond the outer circumference of the bolt 26.9 and engages in the groove 48.
- the groove 48 and pin 47 block a relative axial displacement of the cylindrical part 15.9 and the hollow cylindrical part 16.9, but enable a relative rotational movement of these parts between the unlocking position and the locking position.
- the aid 2.9 is inserted with the locking element 57.9 in the unlocking position into the receptacle 7 of the dental implant 1.9 until the disk-shaped locking element 57.9 is at the level of the annular groove 55.
- the locking position is reached in which the corners 49 enter the annular groove 55 of the anchoring section 11 and in this way bring about a tensile force-transmitting locking between the dental implant 1.9 and the aid 2.9.
- the torque for screwing in the dental implant 1 can be applied either mechanically using an angle piece or manually using an adapter and ratchet.
- An aid according to the invention is not limited to use with implants.
- the invention also includes applications in connection with abutment screws, gingiva screws and closure screws, which can no longer come loose accidentally from the screwing tool after the tensile connection has been established with a screwing tool according to the invention.
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- Health & Medical Sciences (AREA)
- Oral & Maxillofacial Surgery (AREA)
- Orthopedic Medicine & Surgery (AREA)
- Dentistry (AREA)
- Epidemiology (AREA)
- Life Sciences & Earth Sciences (AREA)
- Animal Behavior & Ethology (AREA)
- General Health & Medical Sciences (AREA)
- Public Health (AREA)
- Veterinary Medicine (AREA)
- Dental Prosthetics (AREA)
Abstract
Description
Claims
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| DE102023106126.7A DE102023106126A1 (de) | 2023-03-13 | 2023-03-13 | Hilfsmittel zum Einbringen eines Dentalimplantats in einen Kieferknochen sowie vormontierte Einheit aus einem solchen Hilfsmittel und einem Dentalimplantat |
| PCT/EP2024/056442 WO2024188976A1 (de) | 2023-03-13 | 2024-03-11 | Hilfsmittel zum einbringen eines dentalimplantats in einen kieferknochen sowie vormontierte einheit aus einem solchen hilfsmittel und einem dentalimplantat |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| EP4680150A1 true EP4680150A1 (de) | 2026-01-21 |
Family
ID=90365177
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| EP24711831.8A Pending EP4680150A1 (de) | 2023-03-13 | 2024-03-11 | Hilfsmittel zum einbringen eines dentalimplantats in einen kieferknochen sowie vormontierte einheit aus einem solchen hilfsmittel und einem dentalimplantat |
Country Status (3)
| Country | Link |
|---|---|
| EP (1) | EP4680150A1 (de) |
| DE (1) | DE102023106126A1 (de) |
| WO (1) | WO2024188976A1 (de) |
Family Cites Families (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US5944525A (en) * | 1997-03-11 | 1999-08-31 | Ura; Robert S. | Dental implant and method and apparatus for installing the same |
| US6951462B2 (en) * | 2002-06-04 | 2005-10-04 | Zimmer Dental Inc. | Dental tool with rententive feature |
| WO2012156064A1 (en) * | 2011-05-13 | 2012-11-22 | Straumann Holding Ag | Insertion tool |
| EP2903554B1 (de) * | 2012-10-02 | 2018-02-28 | Straumann Holding AG | Einfügungswerkzeug |
| EP3265020B1 (de) * | 2015-03-04 | 2020-06-10 | Tav - Medical Ltd. | Anordnung zum einsetzen eines zahnimplantats |
-
2023
- 2023-03-13 DE DE102023106126.7A patent/DE102023106126A1/de active Pending
-
2024
- 2024-03-11 EP EP24711831.8A patent/EP4680150A1/de active Pending
- 2024-03-11 WO PCT/EP2024/056442 patent/WO2024188976A1/de not_active Ceased
Also Published As
| Publication number | Publication date |
|---|---|
| DE102023106126A1 (de) | 2024-09-19 |
| WO2024188976A1 (de) | 2024-09-19 |
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