WO2020225036A1

WO2020225036A1 - Device for thermally releasing a connection between an implant and bone tissue

Info

Publication number: WO2020225036A1
Application number: PCT/EP2020/061794
Authority: WO
Inventors: Christoph MOOSBAUER; Michael Pointner; Michael Reiter
Original assignee: W&H Dentalwerk Bürmoos GmbH
Priority date: 2019-05-03
Filing date: 2020-04-28
Publication date: 2020-11-12
Also published as: EP3962406A1

Abstract

The invention relates to a device (1, 1A, 1B, 2) for thermally releasing a connection between an implant (3) and bone tissue (4) by means of heat and/or cold treatment, the device comprising: a transfer element (5), which can be connected to the implant so as to transmit heat; a heat source (6A) and/or cooling device (6B), which is/are connected to the transfer element (5) so as to transmit heat; and a releasable coupling connection (7) between a handle element (8) having the heat source (6A) and/or cooling device (6B) and the transfer element (5), which coupling connection has, at a connection-side end (9), a magnet element (10) and an engaging profile (11) for making a releasable connection with the handle element (8), wherein the handle element (8) has a grip portion (13) extending along a longitudinal axis (14) and a top portion (15), wherein an opening (16) is provided on the top portion (15) for connection to the transfer element (5) such that a centre axis (21) of said opening (16) and/or of the transfer element (5) extends at an angle to the longitudinal axis (14) of the grip portion (13).

Description

Device for the thermal release of a connection between an implant and bone tissue

The present invention relates to a device for the thermal release of a connection between an, in particular dental, implant and bone tissue, in particular jaw bone tissue.

Such a device for thermally releasing a connection between a dental implant and bone tissue is known from the application WO 2012/093044 A1.

The present invention is based on the object of improving the handling of such a device for thermally releasing a connection between an implant and bone tissue for a user. In particular, the device for thermal release should be suitable for frequent and practical use.

This object is achieved according to the present invention by a device for thermally releasing a connection between an, in particular dental, implant and bone tissue in which the implant is placed, with the features of claim 1, 2, 3, 4 or 5, by a thermal Transmission element for a device for thermally releasing a connection between an, in particular dental, implant and bone tissue according to claim 12 and released through the use of such a transmission element according to claim 14. Particularly advantageous embodiments are given in the subclaims.

According to one embodiment, the device for thermally releasing a connection between an, in particular dental, implant and bone tissue in which the implant is placed, by means of heat and / or cold treatment, comprises a (thermal) transfer element that can be connected to the implant to be removed in a heat-transferring manner , and a heat source and / or cooling device that is connected to the transfer element in a heat-transferring manner, so that the implant can be connected to the heat source and / or cooling device in a heat-transferring manner via the transfer element. The device for thermal release further comprises a releasable coupling connection between a handle element, in which the heat source and / or cooling device is arranged, and the transmission element. The transmission element has at one end on the connection side, which is provided for the detachable connection with the handle element, a magnetic element and a driving profile with several driving surfaces. The handle element comprises a handle section which extends along a longitudinal axis, and a head section, wherein an opening for connection to the transmission element, in particular for receiving the transmission element, is provided on the head section, wherein the opening is arranged on the head section such that a Central axis of the opening and / or of the transmission element extends at an angle to the longitudinal axis of the handle portion.

According to another exemplary embodiment, the device for thermally releasing a connection between an, in particular dental, implant and bone tissue in which the implant is placed, by means of heat and / or cold treatment, comprises a transfer element that can be connected to the implant to be removed in a heat-transferring manner a heat source and / or cooling device which is connected to the transfer element in a heat-transferring manner, so that the implant can be connected to the heat source and / or cooling device in a heat-transferring manner via the transmission element, the heat source and / or cooling device and the transmission element being releasably connectable to one another by a releasable coupling connection.

According to a further exemplary embodiment, the device for thermally releasing a connection between an, in particular dental, implant and bone tissue in which the implant is placed, by means of heat and / or cold treatment, comprises a transfer element that can be connected to the implant to be removed in a heat-transferring manner, and a heat source and / or cooling device that is connected to the transfer element in a heat-transferring manner, so that the implant can be connected to the heat source and / or cooling device in a heat-transferring manner via the transfer element, the transfer element having a magnetic element at one end on the connection side.

According to an alternative embodiment, the device for thermally releasing a connection between an, in particular dental, implant and bone tissue in which the implant is placed, by means of heat and / or cold treatment, comprises a transfer element that can be connected to the implant to be removed in a heat-transferring manner a heat source and / or cooling device that is connected to the transfer element in a heat-transferring manner, so that the implant can be connected to the heat source and / or cooling device in a heat-transferring manner via the transfer element, the transfer element having a driving profile with several driver surfaces at one end on the connection side.

According to a further exemplary embodiment, the device for thermally releasing a connection between an, in particular dental, implant and bone tissue in which the implant is placed, by means of heat and / or cold treatment, comprises a transfer element that can be connected to the implant to be removed in a heat-transferring manner Heat source and / or cooling device, which is connected to the transfer element in a heat-transferring manner, so that the implant can be connected to the heat source and / or cooling device in a heat-transferring manner via the transfer element, and a handle element in which the heat source and / or cooling device is / are arranged. The handle element comprises a handle section which extends along a longitudinal axis, and a head section, wherein an opening for connection to the transmission element, in particular for receiving the transmission element, is provided on the head section, wherein the opening is arranged on the head section such that a Central axis of the opening and / or of the transmission element extends at an angle to the longitudinal axis of the handle portion.

The releasable coupling connection or coupling device for releasably connecting the heat source and / or cooling device and the transmission element advantageously enables the transmission element to be attached to the implant independently of the heat source and / or cooling device or the handle element. This considerably improves the manageability of the device for thermal release, since it is possible to first connect the transmission element to the implant and then the transmission element to the heat source and / or cooling device or the handle element before the heat and / or cold treatment. Due to the limited space in the patient's mouth and the often limited view of the treatment site, this makes it easier to prepare the heat and / or cold treatment noticeably. The same applies, of course, in reverse order to the handling of the device for thermal release after the heat and / or cold treatment: here the heat source and / or cooling device or the handle element can first be separated or detached from the transmission element and then the transmission element from the implant .

The provision of a magnetic element at the connection-side end of the transmission element for releasable connection to the heat source and / or cooling device enables several different (mutually independent) advantageous functions. If more than one of these different functions is used, multiple use of the magnetic element is advantageously possible. It goes without saying, however, that only one of these several different functions mentioned below can be used.

The magnetic element advantageously allows, for example, a simple and reliable connection of the transmission element to the heat source and / or cooling device, in particular to the handle element. The magnetic element makes it easier to establish the coupling connection (especially at treatment points that are difficult to see) between the transmission element already attached to the implant and the handle element by attracting magnetic forces between the magnetic element and at least one component of the handle element. The component of the handle element can, for example, have a further magnetic element arranged on or in the handle element and / or another metallic or magnetic or magnetizable component of the handle element. The magnetic element of the transmission element also maintains the connection between the transmission element and the handle element during the heat and / or cold treatment and, in particular, the closest possible, preferably contacting connection between the heat source and / or cooling device of the handle element and at least part of the transmission element, especially of the connection-side end, for a quick and reliable heat exchange.

Another, alternative or additional advantage of providing a magnetic element is that the magnetic element can be used as a signal transmitter for a sensor, for example to start a heat and / or cold treatment only when a signal from the magnetic element is detected or present, such as this is described in detail below.

The provision of a profile with several surfaces or a driving profile with several driving surfaces at a connection-side end of the transmission element enables simplified handling of the transmission element during the establishment or release of the connection between the transmission element and the implant, in particular since the driving profile enables a reliable transmission of a torque the transmission element is possible. The profile or entrainment profile advantageously also increases the surface area of the transmission element, in particular of the connection-side end, whereby a more effective heat transmission between the transmission element and the heat source and / or cooling device and / or the handle element can be achieved.

Also the design of a handle element in which the heat source and / or cooling device is arranged, with a handle section that extends along a longitudinal axis, and a head section on which an opening is provided for connection to the transmission element, in particular for receiving the transmission element, the opening being arranged on the head section in such a way that a central axis of the opening and / or the transmission element extends at an angle to the longitudinal axis of the handle section, facilitates the handling of the thermal release device. The angle is preferably not equal to 0 ° or 180 ° and is in particular between 45 ° and 135 °, particularly preferably 90 ° ± 10 °. In particular, the lateral arrangement of the opening for the transmission element makes it easier for the user to handle the handle element in the oral cavity of a patient, and in particular the connection with and the detachment of the handle element and transmission element are facilitated.

In addition to the opening, the head section particularly preferably also comprises the heat source and / or cooling device. The heat source and / or cooling device is particularly preferably arranged on the opening and / or adjacent to the opening, so that a direct heat transfer between the transfer element received in the opening and the heat source and / or cooling device is advantageously possible.

Each of the exemplary embodiments mentioned in the foregoing thus facilitates the handling of a device for thermal release on its own. Each of the exemplary embodiments mentioned can furthermore be combined or connected with one, more or all of the other exemplary embodiments mentioned, whereby the handling of a device for thermal release is further improved by combinatorial and / or synergistic effects.

The heat transfer or heat transferring connection between the components of the device for thermal release is preferably carried out by heat conduction, whereby a rapid heat transfer is supported in an advantageous manner. Accordingly, the heat-transferring components and / or contact or interfaces between the components of the device for thermal release are shaped and / or designed and / or dimensioned and / or arranged, in particular arranged contacting, that the heat transfer is promoted by heat conduction, as is the case is repeatedly described in detail below. Heat transfer components include in particular at least parts of the heat source and / or cooling device, the releasable coupling device or coupling connection, a receiving device for receiving the magnetic element and / or the connection-side end of the transfer element or the transfer element.

The implant to be detached from the bone tissue and / or other tissue, for example connective tissue, which surrounds the implant includes any implant anchored in bone with a cavity into which a thermal release device, in particular the handle element and / or the heat source and / or cooling device connectable transfer element for heat transfer or heat conduction can be used. The implant is particularly preferably designed as a dental implant that can be inserted into a jawbone. Alternatively, the implant is designed as an orthopedic implant. The cavity of the implant preferably extends along a longitudinal axis of the implant over at least a quarter or half or two-thirds of the length of the implant. The cavity of the implant preferably comprises a thread, in particular an internal thread formed on an inner wall of the cavity.

The transmission element preferably comprises a pin-shaped and / or elongated body adjacent to the connection-side end. The pin-shaped body and the end on the connection side are preferably formed in one piece. Preferably the body comprises a cylindrical body portion. Preferably the body comprises a conical or tapered body portion. A thread is preferably provided on at least one section of the body, in particular a thread that can be screwed to the thread in the cavity of the implant, so that in particular a flat, contacting connection between the transmission element and the implant for effective heat transfer or heat conduction can be established.

At its front end opposite the connection-side end, the transmission element preferably comprises a guide section for (facilitated) insertion and guidance of the transmission element in the cavity of the implant. The outer diameter of the guide section is preferably smaller than at least a section of the body of the transmission element.

Preferably, at least one of the aforementioned components of the transmission element, i.e. the pin-shaped and / or elongated body or at least a section thereof, for example the cylindrical body section and / or the tapering body section and / or the thread and / or the guide section, designed to transfer heat to the implant or to transfer heat from the implant receive or derive. This at least one component of the transmission element preferably makes contact with the implant, in particular its cavity, so that the heat is advantageously transferred by conduction.

A plurality of transmission elements with different bodies are preferably provided, in particular the connection-side end of the plurality of transmission elements being identical. The bodies of the transmission elements preferably differ in their respective length, their respective diameter, in the position, length, shape, pitch of their thread or threads, in the number and spacing of the threads and / or other properties. It is thus advantageously possible to adapt transmission elements to implants with differently shaped and dimensioned cavities, in particular to create the largest possible contact between a transmission element received in the cavity of an implant and the implant in order to achieve effective heat transfer or heat conduction.

Preferably, an outer diameter of the connection-side end of the transmission element is greater than an outer diameter of the pin-shaped and / or elongated body. A step or shoulder is preferably provided at the connection point between the body of the transmission element and the end on the connection side. The shoulder or step is preferably designed as a stop on an implant, in particular on its surface. The larger outer diameter and the thus enlarged outer surface or circumferential surface of the connection-side end advantageously bring about an improved, more effective heat transfer from the heat source and / or to the cooling device. The step or shoulder between the The body of the transfer element and the connection-side end forms, in particular when the step or shoulder contacts an upper side of the implant, a transfer surface for heat transfer between the transfer element and the implant, in particular a transfer area for heat transfer that is additional to the body and / or thread of the transfer element.

The thermal conductivity of the transmission element, in particular the pin-shaped and / or elongated body and / or the connection-side end, is preferably more than 10 W / (m * K), preferably more than 20 W / (m * K), particularly preferably more than 150 W. / (m * K). The transmission element is preferably made of aluminum or an aluminum alloy. Alternatively, it is also possible that the transmission element is made of titanium or a titanium alloy.

The magnetic element of the connection-side end of the transmission element is preferably received in a receptacle, for example a recess or blind hole, of the connection-side end. The magnetic element and / or the receptacle are preferably cylindrical. The magnetic element is preferably pressed and / or glued in the receptacle. The magnetic element preferably protrudes over the connection-side end of the transmission element, whereby it advantageously develops a stronger effect in relation to the connection with the handle element and / or is easier to detect. Alternatively, the magnetic element ends essentially flush with the surface of the end on the connection side. The magnetic element preferably comprises a permanent magnet. The magnetic element preferably comprises a soft magnetic material. The magnetic element preferably has iron, ferrite, cobalt, samarium, neodymium, nickel or boron.

The device for thermal release, in particular the releasable coupling connection or coupling device, preferably comprises a receiving device for receiving the magnetic element and / or the connection-side end of the transmission element, in particular the profile and / or the driving profile with several driving surfaces of the connection-side end. The receiving device is particularly preferably provided on or in the handle element or is designed as part of the handle element. The receiving device is particularly preferably designed to receive or release the magnetic element and / or the connection-side end of the transmission element by linear displacement or insertion.

The receiving device is preferably designed to conduct heat, in particular heat from the heat source (of the handle element) in the direction of or onto the transmission element and / or the implant or from the transmission element and / or implant in the direction of the cooling device. The receiving device particularly preferably comprises material with a thermal conductivity of more than 2 W / (m * K) or of more than 20 W / (m * K), in particular material with a thermal conductivity of about 25 W / (m * K) to about 250 W / (m * K). The receiving device particularly preferably comprises metallic material.

Additionally or alternatively, the receiving device comprises magnetizable or magnetic, in particular soft magnetic material. The receiving device is particularly preferably designed and / or shaped and / or dimensioned to receive the magnetic element on the connection-side end of the transmission element and / or magnetically to attract, so that in particular a releasable magnetic connection between the receiving device and / or the handle element and the transmission element is effected or formed. The magnetic connection between the receiving device and the transmission element or its magnetic element advantageously results in precise positioning of the heat source and / or cooling device in relation to the transmission element, in particular also a contacting connection between the transmission element and components connected to the heat source and / or cooling device of the handle element or the device for thermal release, so that rapid and / or low-loss heat conduction is possible. The magnetic connection also makes it easier to place or connect the handle element to the transmission element that has already been arranged on the implant. If the receiving device comprises soft magnetic material, it is also possible in an advantageous manner to use the receiving device as an induction heating element, in particular at least as part of the heat source of the device for thermal release.

Alternatively or additionally, it is also possible to provide a magnetic element on or in the receiving device, in particular a permanent magnetic element, which is provided to effect and / or form a releasable magnetic connection with the magnetic element at the connection-side end of the transmission element, so as to how Already described in the above, to bring about an exact positioning of the heat source and / or cooling device in relation to the transfer element, in particular also a contacting connection between the transfer element and components of the handle element or the device for thermal release connected to the heat source and / or cooling device . Such a magnetic element is particularly advantageous when the receiving device is formed from a non-magnetic or only very weakly magnetic material, for example from plastic.

It is preferably also conceivable that the receiving device is made of plastic. This advantageously creates electrical insulation between the transmission element and the heat source and / or cooling device.

The receiving device for receiving the magnetic element and / or the connection-side end of the transmission element is preferably designed in the form of a sleeve. The sleeve-shaped receiving device preferably has an interior space for receiving at least part of the transmission element, in particular at least part of the connection-side end of the transmission element, particularly preferably the magnetic element and / or the profile and / or the driving profile with several driving surfaces of the connection-side end. The interior space preferably has an interior wall delimiting the interior space. The interior space preferably has two sections with different inside diameters or clearances. The two sections are preferably connected to one another, for example by a step, shoulder or ring shoulder. The step or shoulder is preferably designed as a stop for the end of the transmission element on the connection side. Preferably, only part of the magnetic element of the connection-side end of the transmission element is in a section with the small inside diameter and the profile or the driving profile with several driving surfaces and another part of the other section with the larger inside diameter Magnet element of the connection-side end added. The sleeve-shaped receiving device and the different inside diameters advantageously bring about a reliable, contacting and / or large-area connection of the transmission element to the heat source and / or cooling device and / or the handle element and thus effective heat conduction.

The receiving device is preferably arranged at the opening for connection to the transmission element, in particular for receiving the transmission element on the head section of the handle element. The interior of the (sleeve-shaped) receiving device is preferably connected to the opening, so that in particular the transmission element, in particular its magnetic element and / or profile and / or driving profile with several driver surfaces, can be inserted into the receiving device through the opening and removed therefrom.

A section of the receiving device, in particular the inner wall of a section of the interior space, and / or the outside of the receiving device (relative to a further section of the receiving device) preferably has an enlarged surface, for example due to an enlarged outer diameter or inner diameter. Preferably, at least part of the connection-side end of the transmission element (relative to an adjoining part of the transmission element), in particular the profile and / or driver profile with multiple driver surfaces, has an enlarged surface, for example due to an enlarged outer diameter. The enlarged surfaces bring about a more efficient or faster heat transfer in an advantageous manner. At least a part of the heat source and / or the cooling device is preferably arranged on at least one section with an enlarged surface.

Preferably, at least part of the interior space, in particular its surface, particularly preferably the enlarged surface area of the interior space and / or the section with the larger inner diameter, and at least part of the connection-side end of the transmission element, in particular the profile and / or the driver profile with several driver surfaces , (geometrically) complementary to one another, so that they interlock in an advantageous manner, in particular interlock in a contacting manner, in order to ensure rapid and reliable heat transfer. In particular, the receiving device, in particular the interior space, engages or surrounds at least a part of the connection-side end of the transmission element.

The complementary surfaces of the interior and of the connection-side end, in particular the profile or driving profile, preferably comprise at least one of the following shapes: several partial surfaces arranged at an angle to one another, arranged around a longitudinal axis of the transmission element, in particular arranged concentrically, and / or together at least one part of the outer circumference of the connection-side end and / or extend along the longitudinal axis of the transmission element and / or form a polygon, for example a triangle, square, pentagon or hexagon or alternatively form a polygon, for example a Torx or a Torx-like shape or a star-shaped cross-section. The described surfaces or the connection-side end of the transmission element serve / serves in an advantageous manner not only for improved heat transfer, but also in particular form / form the entrainment profile of the connection-side end of the transmission element, which enables the connection of the transmission element to and the detachment of the transmission element from the implant simplified for the user.

Particularly preferably, a tool is provided for the user for connecting the transmission element to and for releasing the transmission element from the implant, whereby the connecting and releasing is advantageously even more convenient for the user. The tool preferably has a cavity with an entrainment profile that is complementary to the entrainment profile of the connection-side end of the transmission element, as is described above for the receiving device of the device for thermal release. The two entrainment profiles can be connected to one another and actuated, in particular rotatable, preferably in that the entrainment profile of the tool engages around the entrainment profile of the transmission element. In the simplest case, the tool comprises a hollow sleeve, in the inner cavity of which the driving profile is arranged.

The device for thermally releasing a connection is preferably designed to denature or necrotize bone tissue and / or other tissue, for example connective tissue, which surrounds the implant, through the heat and / or cold treatment, in particular through a heat and / or cold pulse and / or to be destroyed so that the implant can be detached from the bone, in particular with a reduced expenditure of force compared to removing the implant without heat and / or cold treatment. The device for thermally releasing a connection is preferably designed to deliver the heat and / or cold pulse to the implant-bone tissue interface or to the implant-adhesive-bone tissue interface. Bone cement or any other material that improves the anchoring of the implant in the bone tissue can be provided as the adhesive.

The device for thermal release is preferably designed such that the heat flow of the heat and / or cold treatment between the heat source and / or cooling device and the implant is brought about by means of thermal conduction. Particularly preferably, the heat source and / or cooling device and / or the receiving device and / or the (thermal) transfer element and / or the implant contact one another in order to enable heat conduction. Particularly preferably, at least one thermal contact surface is provided on the heat source and / or cooling device and / or on the receiving device and / or on the (thermal) transfer element and / or on the implant, which is / are designed or provided for this purpose if they touch each other to allow the heat flow of the heat and / or cold treatment between the heat source and / or cooling device and the implant.

Preferably, at least a part of the receiving device for receiving the magnetic element and / or the connection-side end of the transmission element forms at least part of the heat source and / or cooling device. For example, at least a part of the receiving device, for example a wall or sleeve section, forms a resistance heating element of an electrical resistance heater or an inductively heatable heating element. Alternatively, the Heat source and / or cooling device arranged on or adjacent to the receiving device. For example, a resistance heating element of an electrical resistance heater, in particular a wire, or a coil of an electrical induction heater is arranged on at least one part of the receiving device and / or wound around it. In both cases, an effective heat transfer between the heat source and / or cooling device and the transfer element accommodated in the receiving device is thus ensured in an advantageous manner.

The heat source and / or cooling device is preferably designed as a heat source and / or cooling device that can be operated or supplied with electrical energy. In this way, rapid and easily controllable or regulatable heat transfer can be implemented in an advantageous manner.

If the thermal release of a connection between an, in particular dental, implant and bone tissue, in which the implant is placed, takes place by means of heat treatment, the heat source of the device for thermal release is preferably designed to apply heat to the implant, in particular to the implant interface -Bone tissue and / or to the interface between the implant-adhesive-bone tissue, to deliver and / or transfer. The heat source is particularly preferably designed to generate the heat given off. To generate heat, the heat source preferably comprises at least one heating element, particularly preferably an electrical heating element, in particular an electrical resistance heating element or an electrical induction heating element, for example an induction heating coil. Electrical heating elements advantageously enable simple, uncomplicated generation of heat.

The electrical heating element is preferably connected or connectable to an electrical voltage source. The electrical voltage source is optionally arranged in the handle element, as a result of which an autonomous handle element is created in an advantageous manner, which in particular is not connected to a line (to a voltage source). Alternatively, the electrical voltage source is arranged outside the handle element, with an electrical line for connecting the voltage source to the handle element or the heat source preferably being provided. A particularly reliable and permanent electrical voltage supply is thus advantageously created.

The electrical resistance heating element preferably comprises at least one electrical heating resistor. The electrical heating resistor surrounds or includes or preferably forms at least a part of the receiving device or the (entire) receiving device for the transmission element, whereby the heat can advantageously be generated close to the transmission element. The heating resistor surrounding or encompassing part of the receiving device or the (entire) receiving device is preferably provided on the opening for the transmission element and / or on a component of the handle element adjacent to the opening and / or on at least part of the (thermal) transmission element.

Alternatively or additionally, the electrical resistance heating element has at least one electrical heating resistor designed as a metal wire. The metal wire is in particular on at least one part of the receiving device for the transmission element and / or on the Opening for the transmission element and / or on a component of the handle element adjoining the opening and / or on at least part of the (thermal) transmission element. The metal wire is preferably surrounded by an electrically insulating sheath. The use of a metal wire makes it possible in an advantageous manner to generate the heat particularly close to the transmission element, as a result of which heat losses and the consumption of electrical energy are reduced.

The induction heating element preferably comprises a coil which can be supplied with alternating current and an electrically conductive body. An alternating magnetic field that can be generated by the alternating current in the coil induces an eddy current in the electrically conductive body which, due to the electrical resistance, causes the electrically conductive body to heat up. The electrically conductive body is particularly preferably formed by at least part of the (thermal) transmission element, for example by the magnetic element provided at the connection-side end of the transmission element. The magnetic element is thus advantageously used for detachable fastening and for generating heat. It is thus advantageously also possible to generate the heat directly in the transmission element, as a result of which heat losses and the consumption of electrical energy are reduced.

As an alternative or in addition, it is possible that the electrically conductive body of the induction heating element is formed by a body that is not part of the transmission element. The electrically conductive body is formed, for example, by a component of the handle element, in particular by a component of the receiving device for the transmission element and / or by a component adjoining the opening for connection to the transmission element, in particular for receiving the transmission element. In this way, a space-saving induction heating can be implemented in an advantageous manner, which is arranged close to the transmission element. The electrically conductive body can alternatively or additionally be formed by a body that is inseparably connected to the coil of the induction heating element, which in particular creates an induction heating element that is independent of the transmission element and / or components of the handle element and that is advantageously independent of the transmission element and / or handle element can be produced and positioned.

Alternatively or additionally, it is also possible for the heat source to have at least one heating element for emitting heat, through which a heat-transferring medium can flow. The heating element is preferably designed as a pipe or pipeline. The medium preferably comprises a fluid, for example water, a gas, in particular air, or oil. The heating element, in particular the pipeline, is preferably connected or connectable to a media source which is particularly preferably designed to heat the medium and convey it to the heating element. The media source is preferably arranged outside the handle element and connected to the heating element in the handle element by a hose line. A heat source with a heating element through which a heat-transferring medium flows is advantageously independent of the supply of electrical energy.

Alternatively or additionally, it is also possible for the heat source to have at least one laser source and / or a laser light guide for transmitting laser radiation for the purpose of emitting heat. The laser source and / or the laser light guide are arranged in such a way that Laser radiation can be emitted onto the transmission element and / or the implant and / or the bone tissue in order to cause the implant and / or the bone tissue to be heated. The use of laser radiation advantageously enables particularly rapid heat transfer to the implant and / or bone tissue.

If the thermal release of a connection between an, in particular dental, implant and bone tissue in which the implant is placed, takes place by means of cold treatment, the cooling device of the device is designed for thermal release, the implant, in particular the implant-bone tissue interface and / or the implant-adhesive-bone tissue interface to withdraw heat. The device for thermal release preferably comprises a cooling device and a heat source, the heat source for releasing a connection between an, in particular dental, implant and bone tissue, in which the implant is placed, by means of heat treatment (by supplying heat to the implant and / or the Bone tissue) and the cooling device for cooling the implant and / or the bone tissue (by removing heat) after interruption or completion of the heat treatment. It is thus advantageously possible to carry out the heat treatment with a higher power and thus in a shorter period of time, whereby the cooling of the cooling device (in particular during an interruption or after completion of the heat supply) causes the heat to spread too far in the bone tissue over the immediate Interface between the implant and bone tissue and thus excessive denaturation or necrotization of the bone tissue can be prevented.

The cooling device preferably comprises at least one cooling element through which a medium or coolant that removes or absorbs heat can flow. The cooling element is preferably designed as a pipe, pipeline, heat exchanger or heat pipe. The medium preferably comprises a fluid, for example water, a gas, in particular nitrogen or air, or oil. The cooling element, in particular the pipeline, is preferably connected or connectable to a heat exchanger, which is preferably arranged outside the handle element. Particularly preferably, a hose line connects the heat exchanger arranged outside the handle element to the cooling element. A cooling device with a cooling element is advantageously independent of the supply of electrical energy.

The handle element is preferably designed as an elongated device that can be held with one hand. The handle element preferably has an outer sleeve which is made in particular from plastic or metal. The outer sleeve is preferably tubular or shaft-shaped. The outer sleeve is preferably hollow, so that components of the handle element can be arranged or stored in its interior, for example at least parts of the coupling device or coupling connection, the receiving device, the heat source and / or cooling device, the magnetic element arranged in the handle element, a control or regulating device, an energy source, in particular for supplying energy to the heat source and / or cooling device, a measuring sensor, in particular for measuring the temperature or the stability of the anchoring of an implant in the bone, electrical insulation means, in particular for insulating the energy source and / or the electrical heat source and / or cooling device, and / or electric coils or Lines, in particular for supplying energy to the heat source and / or cooling device and / or for signal transmission of measurement or control signals. A compact, optionally self-sufficient, wireless handle element is thus advantageously formed.

A coupling or connecting device is preferably provided at one end of the handle element which is located away from or opposite from the head section of the handle element, for connection to a supply and / or control or regulating device and / or a display device. A hose for connection to the supply and / or control or regulating device and / or the display device is preferably fastened or can be fastened to the coupling device. Contact elements are preferably provided on the coupling device, for example metallic or electrical contacts or media connections, which are formed, the supply and / or control or regulating device and / or the display device, in particular electrical, communicative and / or media-transferring with an in or on the To connect the handle element provided component.

The releasable coupling connection or coupling device or receiving device preferably comprises at least one of the following connections: a form-fit connection; a magnetic connection; a plug connection. Since no torques or mechanical forces (but heat) are transmitted via the coupling connection between the heat source and / or cooling device or the handle element and the transmission element, the connections mentioned, which are advantageously simple, inexpensive to manufacture and easy to use, are sufficient. In particular, the magnetic connection with the magnetic element of the transmission element described above ensures a sufficiently reliable, stable connection, and the form-fitting and / or plug-in connection, in particular contacting or (between components of the device for thermal release) making contact, for effective heat transfer or heat conduction . The form-fitting and / or plug-in connection is particularly preferably designed in such a way that the part of the coupling connection or coupling device on the handle element side, in particular the receiving device, is a sliding sleeve without additional resilient or (for establishing an operative connection) holding or coupling elements rotating relative to the transmission element is designed so that the receiving device and the transmission element can be connected or brought into engagement with one another in particular exclusively by linear displacement of these two components relative to one another. Accordingly, the transmission part-side part of the coupling connection or coupling device, in particular the connection-side end, is designed as a sliding element without additional resilient or (for establishing an operative connection) holding or coupling elements rotating relative to the handle element.

The device for thermal release preferably comprises a control or regulating device. At least part or the entire control or regulating device is preferably arranged in the handle element. Alternatively, at least a part or the entire control or regulating device is arranged outside the handle element, in particular the control or regulating device and the handle element being communicatively connected by wire or wirelessly, for example via a radio link. Preferably includes the control or Control device a microcontroller. By providing a control or regulating device, the functionality and user-friendliness of the device for thermal release increases in an advantageous manner.

The control or regulating device is particularly preferably provided for controlling or regulating the heat source and / or cooling device. The control or regulating device controls or regulates in particular the heat flow to or from the implant and / or the heat release in the direction of the implant and / or the heat extraction from the implant and / or the heat and / or (electrical) energy supply of the heat source and / or Cooling device. The control or regulating device controls or regulates alternatively or additionally the media flow of the heat source and / or cooling device, in particular a heat-transferring medium through the heating element of the heat source or a coolant through the cooling element of the cooling device, for example with a valve on a pipe of the heat source and / or cooling device, in particular with a control valve, proportional valve or solenoid valve. By controlling or regulating the heat source and / or cooling device, a considerable improvement in temperature management can advantageously be achieved; for example, excessive heating or cooling with the risk of possible damage to the patient's tissue can be avoided.

The device for thermal release, in particular the handle element, preferably comprises a temperature sensor, for example a thermocouple or a temperature-dependent electrical resistor, for measuring the temperature of the implant or on the implant and / or on the transmission element or the transmission element and / or (on) the implant interface -Bone tissue and / or on the bone tissue or the bone tissue in which the implant is placed and / or (on) the heat source and / or cooling device and / or on a component of the handle element or a component of the handle element. The temperature sensor and the control or regulating device are particularly preferably communicatively connected to one another, so that a measured value from the temperature sensor can be transmitted to the control or regulating device. The control or regulating device is particularly preferably designed to receive the measured value from the temperature sensor and, on the basis of the measured value, to control or regulate the heat source and / or cooling device, in particular the heat flow. By providing the temperature sensor, the temperature management of the device for thermal release is advantageously improved even further.

Preferably, the control or regulating device additionally or alternatively enables one or more further functions listed below: the control or regulating device can have a display device or be communicatively connected to it in order to display operating data and / or a measured value, for example one provided by the im The above-described temperature sensor to display the measured temperature value determined and / or the current status of a treatment and / or the progress of a treatment. The control or regulating device can have a data memory or a database or be communicatively connected to it, which stores and / or provides the data required for the operation of the device for thermal release, in particular the heat source and / or cooling device. Such data include, for example, characteristic data of implants to be detached and / or of patients and / or operating data for the heat source and / or cooling device. Preferably is the control or regulating device designed to receive data from the data memory or the database and, based on the data, to control or regulate the operation of the device for thermal release, preferably the heat source and / or cooling device, in particular the heat flow. The control or regulating device can have a user interface or be communicatively connected to it, which is used for inputting, selecting and / or generating a setting command for setting an operating parameter and / or an operating mode,

Operating parameter or operating program is formed by a user. The control or regulating device is preferably designed to receive the actuating command and, on the basis of the actuating command, to control or regulate the operation of the device for thermal release, preferably the heat source and / or cooling device, in particular the heat flow. These functions advantageously increase the functionality and user-friendliness of the thermal release device.

The control or regulating device can particularly preferably have a transmission element sensor or be communicatively connected to it. The transmission element sensor is designed to recognize and / or detect the transmission element, preferably to prove that the transmission element is received in the releasable coupling device, in particular in the receiving device. By recognizing the transmission element, the use of an unsuitable or unsuitable transmission element is advantageously prevented, for example a transmission element whose geometry is poorly compatible and thus, in particular, has little contact with the geometry of the

Has receiving device of the releasable coupling device, or a transmission element, the material of which has a low thermal conductivity, whereby the flow of heat would be impeded in both cases and thus the duration of treatment would be increased. By proving the

Transmission element, in particular its inclusion in the receiving device, an automatic activation and / or automatic operation of the heat source and / or cooling device, in particular the release of heat, is advantageously possible, so that no separate operating element has to be operated by the user. Additionally or alternatively, the activation and / or automatic operation of the heat source and / or cooling device is only enabled if the transmission element is actually, in particular completely or up to the stop, received in the releasable coupling device or receiving device in order to avoid damage to the heat source and / or or to prevent cooling device, for example due to overheating due to a lack of heat dissipation.

The transmission element sensor particularly preferably comprises a magnetic sensor, for example a Hall sensor or a reed sensor, which is designed to detect the magnetic element, in particular its magnetic field, at a connection-side end of the transmission element and to generate a magnetic element detection signal which indicates the presence or absence of the magnetic element and thus the transmission element. The control or regulating device is preferably designed to receive the magnetic element detection signal and, on the basis of the signal, to control or regulate the operation of the device for thermal release, preferably the heat source and / or cooling device, in particular the heat flow. In particular, the control or regulating device is designed as a heat flow or to allow or initiate a release of heat only when the transfer element is (completely) received in the receiving device. The use of the magnetic element of the transmission element as a signal transmitter for the transmission element sensor advantageously enables uncomplicated detection of the transmission element. It is thus particularly preferably also possible to use the magnetic element for several different functions.

The following is preferably provided: the use of a transmission element which has a pin-shaped body and an adjoining connection-side end on which a driving profile with several driving surfaces and / or a magnetic element is / are arranged, for the releasable thermal connection of a, in particular dental, bone tissue Implant with a heat source and / or cooling device of a device for thermally releasing a connection between an, in particular dental, implant and bone tissue in which the implant is placed, by means of heat and / or cold treatment, so that in particular the implant via the transfer element transfers heat with the heat source and / or cooling device is connected. The use of a transmission element described above is particularly preferred for this purpose.

It is preferably provided that before the heat and / or cold treatment, the transmission element is first connected to the implant and then the transmission element is connected to the heat source and / or cooling device, in particular by receiving the connection-side end of the transmission element in the releasable coupling connection or receiving device, as described above. These two successive steps preferably form a method or are part of a method (i) for thermally releasing a connection between an, in particular dental, implant and bone tissue in which the implant is placed, by means of heat and / or cold treatment or (ii) for the heat-transferring connection of an implant placed in bone tissue, in particular a dental implant, with a heat source and / or cooling device of a device for thermally releasing a connection between an, in particular dental, implant and bone tissue in which the implant is placed, by means of heat and / or cold treatment . These two methods preferably include one or more further steps, as described above.

According to a further exemplary embodiment, the transmission element can be used to thermally release a connection between an, in particular dental, implant and bone tissue in which the implant is placed, by means of heat and / or cold treatment and additionally to determine the implant stability, ie the stability of the attachment or anchoring the implant in the bone tissue. The transfer element is used for thermal release as described above. In a corresponding manner, a method for thermally releasing a connection between an, in particular dental, implant and bone tissue in which the implant is placed, by means of heat and / or cold treatment and in addition to determining the implant stability, ie the stability of the attachment or anchoring of the Implant in the bone tissue, with a transmission element, in particular a transmission element described above, is provided. The advantage This use or this method can be seen in particular in the fact that the same transfer element can be used for thermal release and for determining the implant stability, which makes handling easier for the user and also results in lower costs.

The use or the method preferably comprises that the determination of the implant stability is carried out before and / or after a heat and / or cold treatment for the thermal release of a connection between an implant and bone tissue. By measuring the implant stability after the heat and / or cold treatment or by comparing the measured values of the implant stability before and after the heat and / or cold treatment, the user can in particular determine whether the implant stability has been reduced in such a way that the implant is removed from the Bone tissue is removable, or whether a further heat and / or cold treatment, ie another heat input and / or heat extraction is / are necessary.

The implant stability is preferably determined with the aid of the transmission element, the transmission element being or being connected to the implant, in particular by screwing the thread in the cavity of the implant to the thread of the transmission element, as described above. The transmission element is preferably excited, in particular set in vibration. A resonance frequency of the transmission element is preferably detected, in particular without contact, on the basis of which the implant stability can be determined.

The transmission element is preferably excited by an external excitation magnetic field, in particular an alternating magnetic field. The external excitation magnetic field is preferably generated by a coil. The external excitation magnetic field preferably interacts with the magnetic element at a connection-side end of the transmission element in order to set the transmission element in vibration. At one end of the transmission element on the connection side, the magnetic element preferably interacts with a detector, in particular a magnetic detector or magnetic field detector, in order to determine the resonance frequency of the transmission element, in particular by means of magnetic field interference. The detector preferably comprises a coil for generating a measuring magnetic field. In this way, the magnetic element of the transmission element can advantageously be used in addition (to one or more of the uses described above in connection with the thermal release of a connection between an implant and bone tissue) to determine the stability of the implant.

It is also conceivable to effect the excitation of the transmission element not magnetically but in some other way, for example by transmitting mechanical forces or vibrations to the transmission element through contact of the excitation element with the transmission element.

The detected resonance frequency is preferably evaluated with an analyzer. The analyzer is designed to generate a signal that represents a ratio of a response voltage, which is based on the detected resonance frequency, to an excitation voltage for exciting the transmission element. The signal or the ratio of the two voltages indicates the implant stability, ie a degree of attachment of the implant in the bone. Preferably, two (different) handle elements that can be operatively connected to the transmission element are provided for using the transmission element for thermal release of the connection and for determining the implant stability or for a corresponding method. The handle element for thermal release is in particular designed and usable as described above. The handle element for determining the implant stability includes in particular an excitation element for causing the transmission element to vibrate, for example a coil for generating the excitation magnetic field, and a detector for determining the resonance frequency of the transmission element, in particular a coil for generating a measuring magnetic field. The handle element for determining the implant stability preferably also comprises a control and / or regulating device for controlling the excitation element and / or for controlling a display device for displaying the measured implant stability. The control and / or regulating device can also comprise at least part of the analyzer and / or a display device for displaying the implant stability and / or a, in particular wireless, communication device, for example for transmitting measured values of the measurement of the implant stability.

Preferably, the two handle elements can be operatively alternately connected to the transmission element in order to thermally release a connection between an implant and bone tissue and to determine the implant stability. Particularly preferably, the handle element for thermal release can be connected to the transmission element in a contacting manner, as described above, in particular via the releasable coupling connection, while the handle element for determining the implant stability can only be connected operatively, but not in contact, to the transmission element when the excitation and Evaluation of the resonance frequency takes place exclusively magnetically.

The use of the transmission element for thermal loosening and in particular also for determining the implant stability or the corresponding method also advantageously enable data or information about the implant and / or about the quality of the connection between the implant and the surrounding bone tissue and / or via the bone tissue, which can be used for thermal loosening, in particular if a determination of the implant stability is carried out before a heat and / or cold treatment for thermal loosening. The data or information preferably include information about the implant, for example the type, the mass, the geometry, a material, a dimension or the thermal conductivity of an implant, which is determined by the used, i.e. transmission element that can be screwed to the implant can be determined, and / or the size or the proportion of the outer surface of the implant on which bone tissue is located and / or the degree of osseointegration.

The information about the implant can be determined in particular about the type of transmission element used to measure the implant stability. Since different implants have different cavities and / or threads, there are transmission elements adapted to them for different implants. A transmission element is preferably provided with a marking, for example with an optical marking or with an RFID chip or with any other marking which Transmission element or the type of transmission element identified and read out by a reading device. The reading device is provided in particular on the handle element for determining the implant stability or on the handpiece for thermal release. The reading device is preferably designed to read out the marking and, on the basis of the read-out marking, to generate a signal which identifies the transmission element or the type of transmission element. The reading device is preferably also designed to transmit the signal to a control or regulating device. The control or regulating device is preferably arranged outside the handle element for determining the implant stability and / or at least communicatively connected or connectable to the handle element for thermal release. The control or regulating device is preferably designed to determine data or information about the implant, for example the data mentioned above, for example from a database, on the basis of the signal identifying the transmission element or the type of transmission element.

The control or regulating device is particularly preferably designed on the basis of the data or information about the implant and / or the data or information determined by determining the implant stability, for example the aforementioned data such as osseointegration, at least one operating parameter for thermal loosening the connection between the implant and bone tissue, in particular for the heat and / or cold treatment, for example from a database connected to the control or regulation device, and in particular to operate the heat source and / or cooling device on the basis of this at least one operating parameter. The at least one operating parameter includes, for example, the duration of the heat and / or cold treatment, the temperature to which the heat source should be heated and / or which should not be exceeded, the (electrical) power with which the heat source (maximum) is to be supplied, the volume flow of a coolant flowing through the cooling device, and similar parameters.

The determination of the implant stability before a heat and / or cold treatment for thermal release thus advantageously enables a simplified, preferably at least partially automated, treatment for the user, since the user does not have to enter or select the data required for the thermal release manually via a user interface, Instead, these data are determined automatically by determining the implant stability.

A treatment unit is preferably provided which has a handle element for thermal release, a handle element for determining the implant stability and a control or regulating device which is at least communicatively connectable or connected to the device for thermal release and to the handle element for determining the implant stability. The treatment unit is designed in particular for the above-described use of the transmission element for thermal release and for determining the implant stability or for carrying out a corresponding method.

The invention is explained below with the aid of preferred exemplary embodiments and with reference to the accompanying drawings. FIG. 1 shows a sectional illustration through an implant to be removed from bone tissue with a transmission element which is detachably connected to the implant in a heat-transferring manner.

FIG. 2 shows a first exemplary embodiment of a device for thermally releasing a connection between an implant and bone tissue in which the implant is placed, by means of heat treatment.

FIG. 3 shows a second exemplary embodiment of a device for thermally releasing a connection between an implant and bone tissue in which the implant is placed, by means of heat treatment.

FIG. 4 shows an exemplary embodiment of a device for thermally releasing a connection between an implant and bone tissue in which the implant is placed by means of cold treatment.

FIG. 5 shows an embodiment of a treatment unit with a device for thermally releasing a connection between an implant and bone tissue in which the implant is placed by means of heat and / or cold treatment, with a handle element for determining the implant stability and with a control or regulating device which is at least communicatively connectable or connected to the device for thermal release and to the handle element for determining the implant stability.

The dental implant 3 shown in FIGS. 1-5 is representative of a large number of different, in particular dental implants, which differ more or less strongly in their dimensions, designs of the thread or the inner cavity and in additional or other parameters, but all of them have the features described below in common: the implant 3 comprises an (inner) cavity 22 which extends along a longitudinal axis of the implant 3. The cavity 22 comprises a thread 24, in particular an internal thread formed on an inner wall of the cavity 22. On the outside of the implant 3, a further thread 23 is provided on at least one section for connection to the bone tissue 4 in which the implant 3 is placed. The implant 3 is preferably made of metal and / or ceramic.

A transmission element 5 is detachably connected to the implant 3 (see in particular FIG. 1). The transmission element 5 comprises an end 9 on the connection side, a pin-shaped and / or elongated body 20 and a front end 25 opposite the end 9 on the connection side, said sections 9, 20, 25 preferably being formed in one piece. On at least one section of the body 20, preferably at or near the front end 25, a thread 26 is provided which can be screwed to the internal thread 24 in the cavity 22 of the implant 3, so that a detachable and contacting, interlocking connection between the transmission element 5 and the implant 3 can be produced. The transmission element 5, in particular the body 20 and / or the front end 25 and / or the thread 26, is / are preferably designed in such a way, in particular adapted to the dimensions and / or shape of the cavity 22 of the implant 3, that a (large-area) contact can be produced between the transmission element 5 and an inner wall of the cavity 22 when the transmission element 5 is received in the cavity 22 in order to have the largest possible area for heat transfer, in particular, to provide heat conduction between the transmission element 5 and the implant 3.

At the connection-side end 9 of the transmission element 5, a magnetic element 10 is provided, which can optionally be used to connect the transmission element 5 to a heat source 6A and / or cooling device 6B or a handle element 8 (see Figures 2, 3, 4) and / or as a signal transmitter for a Sensor, for example, to begin a heat and / or cold treatment only when a signal from the magnetic element 10 is detected or present, and / or can be used for heat conduction and / or for inductively generating heat. The magnetic element 10 is received in a blind hole of the transmission element 5, in particular of the connection-side end 9, which hole forms a receptacle 27. The magnetic element 10 and the receptacle 27 are cylindrical.

On the connection-side end 9 of the transmission element 5, a profile or driving profile 11 with several driving surfaces 12 is also provided. The profile 11 is designed in particular as a polygon, for example as a triangle or hexagon. The profile 11 enables a simplified handling of the transfer element 5 during the establishment or release of the connection between the transfer element 5 and the implant 3 and increases the surface area of the connection-side end 9, which results in a more effective heat transfer between the transfer element 5 and the heat source 6A and / or cooling device 6B is achievable. In particular, the profile surrounds the blind hole 27 and / or the magnetic element 10.

FIGS. 2 and 3 show devices 1, 1A for thermally releasing a connection between an, in particular dental, implant 3 and bone tissue 4, into which the implant 3 has been placed and / or grown, by means of heat treatment. FIG. 4 shows a device 1 B for thermally releasing a connection between an, in particular dental, implant 3 and bone tissue 4, into which the implant 3 has been placed and / or grown, by means of cold treatment. The devices 1, 1A, 1B each include a transfer element 5, which can be connected to the implant 3 to be removed in a heat-transferring manner, and a heat source 6A or a cooling device 6B, which can be connected to the transfer element 5 in a heat-transferring manner, so that the implant 3 via the Transfer element 5 can be connected to the heat source 6A or the cooling device 6B in a heat-transferring manner.

The heat source 6A and / or the cooling device 6B is arranged in a handle element 8 which the user can hold with one hand. In FIGS. 2-4, the handle element 8 is detachably, heat-transferringly connected to the transmission element 5, in particular attached or pushed on. The handle element 8 has a handle section 13, which extends along a longitudinal axis 14, and a head section 15. The handle section 13 is designed as an elongated, tubular or shaft-shaped element. The handle element 8 comprises a one-part or multi-part, hollow outer sleeve 28, in which the components described below, such as a releasable coupling device 7, at least parts of the heat source 6A or the cooling device 6B, sensors, display elements, communication elements and / or a control or control device are arranged.

The heat source 6A or cooling device 6B is arranged in the head section 15 of the handle element 8. On the head section 15 there is also an opening 16 for Connection of the handle element 8 to the transmission element 5, in particular for receiving at least part of the connection-side end 9 of the transmission element 5 in the head section 15, is provided. The opening 16 and the heat source 6A or the cooling device 6B are in particular arranged adjacent to one another in order to guarantee a low-loss, effective heat transfer to or from the transfer element 5. The opening 16 is also arranged on the head section 15 in such a way that a central axis 21 of the opening 16 and / or the transmission element 5 extends at an angle to the longitudinal axis 14 of the handle section 13, whereby the handling of the handle element 8 is facilitated.

The releasable connection between the handle element 8 and the transmission element 5 is formed by a releasable coupling connection 7. The releasable coupling connection 7 comprises a receiving device 17 for receiving the magnetic element 10 and / or the connection-side end 9 of the transmission element 5. The receiving device 17 provided on or in the handle element 8 is, for example, pot-shaped and / or sleeve-shaped.

According to FIG. 2, the releasable coupling connection 7, in particular the receiving device 17, is designed as a form-fitting plug connection for receiving the magnetic element 10 of the transmission element 5. The receiving device 17 is designed in particular as a form-fitting, magnetic plug-in connection with a further magnetic element 29, which is provided to effect a releasable magnetic connection with the magnetic element 10 at the connection-side end 9 of the transmission element 5 in order to position the heat source 6A precisely in Relation to the transmission element 5 and in particular to effect a contacting connection between the transmission element 5 and the receiving device 17 and / or the heat source 6A. The further magnetic element 29 is positioned in a recess of the receiving device 17 in order to come as close as possible to the magnetic element 10 of the transmission element 5. A strengthening of the magnetic connection between the magnetic element 10 of the transmission element 5 and the releasable coupling connection 7 is preferably possible in that the receiving device 17 has and / or is formed from magnetic material.

The receiving device 17 of FIG. 2 is mounted in the head section 15 by a bearing device 30. The bearing device 30 preferably comprises electrically insulating material and / or material with low thermal conductivity, for example ceramic material, in order in particular to electrically and thermally decouple the outer sleeve 28 and / or other components of the handle element 8 from the heat source 6A. The receiving device 17 and the bearing device 30 are in particular supported on one another by projections and recesses.

The heat source 6A of the device 1 in FIG. 2 comprises an electrical resistance heater with at least one resistance heating element. At least part of the electrical resistance heater or the resistance heating element is formed by the receiving device 17, whereby a direct, heat-transferring contact is formed between the heat source 6A and the transfer element 5, in particular the magnetic element 10. The resistance heating element and / or the receiving device 17 is / are connected to an electrical voltage source by electrical contact elements 32 and an electrical line and can be supplied with electrical energy. So that the receiving device 17 as Resistance heating element can be used and can absorb electrical energy, it preferably comprises a metal alloy, which has, for example, iron, aluminum and / or copper.

A temperature sensor 33 is provided on the receiving device 17, in particular in an interior 18 of the receiving device 17 in which the magnetic element 10 and / or the connection-side end 9 of the transmission element 5 can be received, preferably on the inner wall of the interior 18. The temperature sensor 33 is designed to measure the temperature of the electrical resistance heater and / or the magnetic element 10 and / or the connection-side end 9 of the transmission element 5 and / or the interface between the heat source 6A (or the cooling device 6B) and the transmission element 5 in order to in particular to prevent excessive heat transfer (heating or cooling). The temperature sensor 33 is preferably communicatively connected to a control or regulating device, so that a measured value of the temperature sensor 33 can be transmitted to the control or regulating device, so that the control or regulating device can use the measured value to control the heat source 6A and / or cooling device 6B, in particular the heat flow, controls or regulates. Such a temperature sensor 33 can also be implemented in a corresponding manner in the devices 1A, 1B and 2 of FIGS. 3-5.

According to FIGS. 3 and 4, the releasable coupling connection 7, in particular the receiving device 17, is designed as a form-fitting plug connection for receiving at least part of the connection-side end 9 of the transmission element 5 and the magnetic element 10. For this purpose, the sleeve-shaped receiving device 17 has an interior 18 into which at least a part of the connection-side end 9 including the driving profile 11 with several driving surfaces 12 and the magnetic element 10 can be introduced. The interior 18 comprises two sections with different clear widths, in one section with the smaller clear width only a part of the magnetic element 10 protruding beyond the connection-side end 9 and in the other section with the larger inner diameter the entrainment profile 11 and another part of the magnetic element 10 is included.

Preferably, the entrainment profile 11 of the connection-side end 9 of the transmission element 5 and at least part of the inner wall of the interior 18, in particular the section with the larger inner diameter, are geometrically complementary, so that they interlock and / or contact one another in order to achieve, among other things, an effective Allow heat transfer.

According to the embodiment of Figure 2, it is also conceivable in the handle element 8 of Figures 3, 4 that at least a portion of the receiving device 17, in particular the portion with the smaller clear width, has magnetic material and / or is formed from it to a magnetic material To effect connection between the magnetic element 10 of the transmission element 5 and the releasable coupling connection 7.

The receiving device 17 of FIGS. 3, 4 is (directly) mounted on the inside of the outer sleeve 28. The receiving device 17 is arranged or clamped in particular between a cap 31 that can be detached from the outer sleeve 28 and a section of the outer sleeve 28 surrounding the opening 16. The cap 31, which can in particular be screwed to the outer sleeve 28 Advantageously, it also facilitates the assembly of the receiving device 17 and / or the heat source 6A or the cooling device 6B in the handle element 8.

The heat source 6A of the device 1A of FIG. 3 comprises an electrical induction heating element 34, for example an induction heating coil. The induction heating element 34 is arranged around the receiving device 17, for example wound, in particular around the section of the receiving device 17 with the larger inner diameter and / or around the driving profile 11 of the connection-side end 9 of the transfer element 5, whereby a large area is available for heat transfer. The electrical induction heating element 34 is connected to an electrical voltage source by an electrical line 35 and can be supplied with electrical energy.

The handle element 8 of FIG. 3 further comprises a control or regulating device 19 for controlling or regulating the operation, in particular of operating parameters, of the device 1A. In particular, the control or regulating device 19 is provided for monitoring, controlling and / or regulating the heat source 6A, 34, for which purpose it is preferably connected to a temperature sensor 33 (see FIG. 2). The control or regulating device 19 can, however, also be provided for a large number of other functions and, if necessary, connected to corresponding devices in order to control or regulate them, for example with a display device for displaying an operating parameter, in particular the temperature, with a user interface for selection and / or input of operating programs or operating data by a user, with a communication unit for receiving and / or sending data, with a signal or warning device, etc. Such a control or regulating device 19 is also in a corresponding manner in the devices 1, 1 B and 2 of Figures 2, 4 and 5 can be implemented.

The cooling device 6B of the device 1B of FIG. 4 comprises at least one cooling element 36 through which a medium or coolant that removes or absorbs heat can flow. The cooling element 36 is designed as a pipeline which is arranged around the receiving device 17, for example wound in a spiral shape, in particular around the section of the receiving device 17 with the larger inner diameter and / or around the driving profile 11 of the connection-side end 9 of the transmission element 5, whereby a large Area for heat transfer is available.

The treatment unit 40 shown in FIG. 5 comprises a device 2 for thermally releasing a connection between an implant 3 and bone tissue 4 in which the implant 3 is placed by means of heat and / or cold treatment, a handle element 37 for determining the implant stability and a Control or regulating device 38, which is at least communicatively connectable or connected to the device 2 for thermal release and to the handle element 37 for determining the implant stability. The device 2 for thermal release preferably comprises one of the devices 1, 1A, 1B described above for thermal release with a handle element 8.

The handle element 37 for determining the implant stability comprises in particular an excitation element 39 for causing the transmission element 5 to vibrate, for example a coil for generating the excitation magnetic field in order to magnetically excite the transmission element 5 to vibrate. The handle element 37 furthermore comprises a detector 41 for Determination of the resonance frequency of the transmission element 5, in particular a further coil for generating a measuring magnetic field. The handle element 37 is also connected to a control and / or regulating device 38 via a supply and / or communication line 42. The control and / or regulating device 38 comprises, for example, an analyzer which is designed to evaluate the detected resonance frequency and to determine the implant stability, ie the degree of attachment of the implant 3 in the bone 4, therefrom.

The two handle elements 8, 37 can (operationally) alternately be connected to the transmission element 5 in order to thermally release a connection between an implant 3 and bone tissue 4 and to determine the implant stability. The handle element 8 for thermal release can be connected to the transfer element 5 in a contacting manner, as described above, in particular via the releasable coupling connection 7, in order to effect heat transfer, in particular heat conduction. The magnetically stimulating handle element 37 for determining the implant stability is designed to determine the implant stability without contact with the transmission element 5. The alternating or joint use of the transmission element 5 for thermally releasing a connection between an implant 3 and bone tissue 4 and for determining the implant stability considerably simplifies the user's workflow.

The use of the transmission element 5 for thermal release and for determining the implant stability furthermore advantageously enables data or information about the implant 3 and / or about the quality of the connection of the implant 3 with the surrounding bone tissue 4 and / or about to obtain the bone tissue 4, which can be used for thermal loosening. The data or information preferably include information about the implant 3, for example the type, the mass, the geometry, a material, a dimension or the thermal conductivity of an implant 3, which is determined by the used, i.e. transmission element 5 that can be screwed to the implant 3 can be determined, and / or the size or the proportion of the outer surface of the implant 3 on which there is bone tissue and / or the degree of osseointegration.

In order to enable such an exchange of data or information, the two handle elements 8, 37 are communicatively connected to one another. As already described above, the handle element 37 for determining the implant stability is connected via a supply and / or communication line 42 to a control and / or regulating device 38, so that measured value or measurement data from the handle element 37 to the control and / or regulating device 38 are transferable. Of course, a wireless radio link for communication, in particular for data or information exchange, between the handle element 37 and the control and / or regulating device 38 is also conceivable. The data or information exchange between the handle element 37 and the control and / or regulating device 38 can be unidirectional, in particular from the handle element 37 to the control and / or regulating device 38, or bidirectional.

Furthermore, a communicative connection 43 is provided between the handle element 8 and the control and / or regulating device 38. The communicative connection 43 can optionally be unidirectional, in particular from the control and / or regulating device 38 to the handle element 8, in order to transfer data to the handle element 8 that can be used for thermal release be transmitted, or be bidirectional. With a bidirectional connection, it is advantageously also possible to transmit data, for example via the implant 3, from the handle element 8 to the control and / or regulating device 38. The communicative connection 43 between the handle element 8 and the control and / or regulating device 38 can optionally be wired or wireless, by means of a radio link.

Alternatively, it is also conceivable that the two handle elements 8, 37 are directly communicatively connected to one another in order to exchange data or information directly, so that a control and / or regulating device 38 provided outside of the handle elements 8, 37, as shown in FIG is shown, at least for the data or information exchange between the handle elements 8, 37 is not required.

In order to enable the exchange of data or information, the two handle elements 8, 37 and the control and / or regulating device 38 are equipped with communication units, in particular transmitting, reading and / or receiving units, which are designed to set up a communication link with one another and / or to communicate with each other.

The control and / or regulating device 38 is designed based on the data or information about the implant 3 and / or the data or information determined by determining the implant stability, for example data about the osseointegration, at least one operating parameter for the thermal release of the Connection between the implant 3 and bone tissue 4, in particular for the heat and / or cold treatment, to be selected, for example from a database of the control and / or regulating device. The at least one operating parameter includes, for example, the duration of the heat and / or cold treatment, a temperature which the heat source 6A or the cooling device 6B should not exceed or fall below, the (electrical) power with which the heat source 6A (maximum) is to be supplied, the volume flow of a coolant flowing through the cooling device 6B, and similar parameters.

The exemplary embodiments described or illustrated serve in particular to illustrate the invention. The features disclosed in one exemplary embodiment are therefore not restricted to this exemplary embodiment, but can be combined individually or together with one or more features of one of the other exemplary embodiments.

Claims

1. Device (1, 1A, 1 B, 2) for thermally releasing a connection between an, in particular dental, implant (3) and bone tissue (4) in which the implant (3) is placed, by means of heat and / or Cold treatment, wherein the device (1, 1A, 1 B, 2) for thermal release comprises: a transfer element (5) which can be connected to the implant (3) to be removed in a heat-transferring manner, and a heat source (6A) and / or cooling device ( 6B), which is connected to the transfer element (5) in a heat-transferring manner, so that the implant (3) can be connected to the heat source (6A) and / or cooling device (6B) in a heat-transferring manner via the transfer element (5), the device (1, 1 A, 1 B, 2) for thermal release is further characterized by

a releasable coupling connection (7) between a handle element (8), in which the heat source (6A) and / or cooling device (6B) is arranged, and the transmission element (5) at a connection-side end (9), which is used for releasable connection is provided with the handle element (8), has a magnetic element (10) and a driving profile (11) with several driving surfaces (12), the handle element (8) having a handle portion (13) which extends along a longitudinal axis (14), and a head section (15), an opening (16) for connection to the transmission element (5) being provided on the head section (15), the opening (16) being arranged on the head section (15) such that a Central axis (21) of the opening (16) and / or of the transmission element (5) extends at an angle to the longitudinal axis (14) of the handle section (13).

2. Device (1, 1A, 1 B, 2) for thermally releasing a connection between an, in particular dental, implant (3) and bone tissue (4) in which the implant (3) is placed, by means of heat and / or Cold treatment, wherein the device (1, 1A, 1 B, 2) for thermal release comprises: a transfer element (5) which can be connected to the implant (3) to be removed in a heat-transferring manner, and a heat source (6A) and / or cooling device ( 6B), which is connected to the transfer element (5) in a heat-transferring manner, so that the implant (3) can be connected to the heat source (6A) and / or cooling device (6B) in a heat-transferring manner via the transfer element (5), characterized in that

the heat source (6A) and / or cooling device (6B) and the transmission element (5) can be releasably connected to one another by a releasable coupling connection (7).

3. Device (1, 1A, 1 B, 2) for thermally releasing a connection between an, in particular dental, implant (3) and bone tissue (4) in which the implant (3) is placed, by means of heat and / or Cold treatment, wherein the device (1, 1A, 1 B, 2) for thermal release comprises: a transfer element (5) which can be connected to the implant (3) to be removed in a heat-transferring manner, and a heat source (6A) and / or cooling device ( 6B), which is connected to the transfer element (5) in a heat-transferring manner, so that the implant (3) via the transfer element (5) transfers heat to the Heat source (6A) and / or cooling device (6B) can be connected or device (1, 1 A, 1 B, 2) for thermally releasing a connection according to claim 2, characterized in that the transmission element (5) at a connection-side end (9 ), which is provided for releasable connection to the heat source (6A) and / or cooling device (6B), has a magnetic element (10).

4. Device (1, 1 A, 1 B, 2) for thermally releasing a connection between an, in particular dental, implant (3) and bone tissue (4), in which the implant (3) is placed, by means of heat and / or or cold treatment, wherein the device (1, 1A, 1 B, 2) for thermal release comprises: a transfer element (5) which can be connected to the implant (3) to be removed in a heat-transferring manner, and a heat source (6A) and / or cooling device (6B), which is connected to the transfer element (5) in a heat-transferring manner, so that the implant (3) can be connected to the heat source (6A) and / or cooling device (6B) or device (1, 1) in a heat-transferring manner via the transfer element (5) A, 1 B, 2) for the thermal release of a connection according to claim 2 and / or 3, characterized in that

the transmission element (5) at a connection-side end (9) has a driving profile (11) with several driving surfaces (12).

5. Device (1, 1 A, 1 B, 2) for thermally releasing a connection between an, in particular dental, implant (3) and bone tissue (4), in which the implant (3) is placed, by means of heat and / or or cold treatment, wherein the device (1, 1A, 1 B, 2) for thermal release comprises: a transfer element (5) which can be connected to the implant (3) to be removed in a heat-transferring manner, and a heat source (6A) and / or cooling device (6B), which is connected to the transfer element (5) in a heat-transferring manner, so that the implant (3) can be connected to the heat source (6A) and / or cooling device (6B) or device (1, 1) in a heat-transferring manner via the transfer element (5) A, 1 B, 2) for thermal release of a connection according to claim 2, 3 or 4, wherein the device (1, 1 A, 1 B, 2) for thermal release is further characterized by a handle element (8) in which the heat source (6A) and / or cooling device (6B) is arranged and the one Gr iff section (13) which extends along a longitudinal axis (14) and has a head section (15), an opening (16) for connection to the transmission element (5) being provided on the head section (15), the opening ( 16) is arranged on the head section (15) in such a way that a central axis (21) of the opening (16) and / or of the transmission element (5) extends at an angle to the longitudinal axis (14) of the handle section (13).

6. Device (1, 1A, 1 B, 2) for thermal release according to one of the preceding claims, characterized in that

the releasable coupling connection (7) comprises at least one of the following connections: a form-fitting connection; a magnetic connection; a plug connection.

7. Device (1, 1A, 1 B, 2) for thermal release according to one of the preceding claims, characterized in that the detachable coupling connection (7) has a receiving device (17) for receiving the magnetic element (10) and / or the connection-side end (9) of the transmission element (5), the receiving device (17) preferably being provided on or in the handle element (8) is.

8. Device (1, 1A, 1 B, 2) for thermal release according to claim 7, characterized in that

at least part of the receiving device (17) forms at least part of the heat source (6A) and / or cooling device (6B) or that the heat source (6A) and / or cooling device (6B) is arranged on the receiving device (17).

9. Device (1, 1A, 1 B, 2) for thermal release according to claim 7 or 8, characterized in that

the receiving device (17) has an interior (18) with an inner wall, at least part of the connection-side end (9) of the transmission element (5), in particular the driving profile (1 1) with several driving surfaces (12), and at least part of the Inner wall of the interior (18) are designed geometrically complementary so that they interlock and / or the interior (18) surrounds at least part of the connection-side end (9) of the transmission element (5).

10. Device (1, 1A, 1 B, 2) for thermal release according to one of the preceding claims, characterized by

a heat source (6A) and / or cooling device (6B) that can be operated with electrical energy.

1 1. Device (1, 1A, 1 B, 2) for thermal release according to one of the preceding claims, characterized by

a control or regulating device (19) for controlling or regulating the heat source (6A) and / or cooling device (6B).

12. Thermal transmission element (5) for a device (1, 1 A, 1 B, 2) for thermally releasing a connection between an, in particular dental, implant (3) and bone tissue (4) into which the implant (3) is placed is, by means of heat and / or cold treatment, characterized in that

the transmission element (5) has a connection-side end (9) which is provided for releasable connection to a heat source (6A) and / or cooling device (6B) of the device (1, 1A, 1B, 2) for thermal release, with the connection-side end (9) is / are provided with a driving profile (11) with several driving surfaces (12) and / or a magnetic element (10).

13. Thermal transmission element (5) according to claim 12, characterized in that the transmission element (5) has a pin-shaped body (20) adjacent to the connection-side end (9), an outer diameter of the connection-side end (9) being greater than an outer diameter of the pin-shaped body (20).

14. Use of a transmission element (5) which has a pin-shaped body (20) and an adjoining connection-side end (9) on which a driver profile (1 1) with several driver surfaces (12) and a magnetic element (10) are arranged, for the detachable thermal connection of a, in particular dental, placed in bone tissue (4) Implant (3) with a heat source (6A) and / or cooling device (6B) of a device (1, 1 A, 1 B, 2) for thermally releasing a connection between an, in particular dental, implant (3) and bone tissue (4) into which the implant (3) is placed, by means of heat and / or cold treatment.

15. Use of a transmission element (5) according to claim 14, characterized in that

before the heat and / or cold treatment, the transmission element (5) is first connected to the implant (3) and then the transmission element (5) is connected to the heat source (6A) and / or cooling device (6B).