EP3810263A1 - Medizinisches implantat, bedienungsvorrichtung für ein medizinisches implantat, medizinprodukt und verfahren zur elektrischen versorgung eines medizinischen implantats - Google Patents
Medizinisches implantat, bedienungsvorrichtung für ein medizinisches implantat, medizinprodukt und verfahren zur elektrischen versorgung eines medizinischen implantatsInfo
- Publication number
- EP3810263A1 EP3810263A1 EP19729270.9A EP19729270A EP3810263A1 EP 3810263 A1 EP3810263 A1 EP 3810263A1 EP 19729270 A EP19729270 A EP 19729270A EP 3810263 A1 EP3810263 A1 EP 3810263A1
- Authority
- EP
- European Patent Office
- Prior art keywords
- unit
- implant
- magnet
- operating device
- magnet unit
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Withdrawn
Links
Classifications
-
- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61N—ELECTROTHERAPY; MAGNETOTHERAPY; RADIATION THERAPY; ULTRASOUND THERAPY
- A61N1/00—Electrotherapy; Circuits therefor
- A61N1/18—Applying electric currents by contact electrodes
- A61N1/32—Applying electric currents by contact electrodes alternating or intermittent currents
- A61N1/36—Applying electric currents by contact electrodes alternating or intermittent currents for stimulation
- A61N1/372—Arrangements in connection with the implantation of stimulators
- A61N1/378—Electrical supply
- A61N1/3787—Electrical supply from an external energy source
Definitions
- Medical implant operating device for a medical implant, medical device and method for the electrical supply of a medical implant
- the present invention relates to a medical implant, comprising an electrically operable functional unit.
- the invention relates to an operating device for a medical implant, a medical product and a method for the electrical supply of a medical implant.
- Medical implants have a functional unit, which is used in particular to replace or support a body function of the patient.
- This functional unit can be electrically operated, such implants also being referred to as active implants. If the medical implant is not able to independently generate electrical energy for operating the functional unit, an energy supply from outside the body, that is to say across a tissue boundary, for operating the functional unit must be made possible.
- Patent US 2014/0266022 A1 discloses an implantable device that includes an electromechanical pump.
- the implantable device is set up to be charged or operated inductively by means of an external charging system.
- inductive supply of the medical implant often has an unsatisfactory degree of efficiency and possibly leads to uncontrolled tissue heating during inductive energy transfer. There is also a risk of poor electromagnetic compatibility and insufficient biocompatibility.
- the invention is therefore based on the object of specifying a possibility for improving the electrical supply of a medical implant.
- a medical implant of the type mentioned at the outset further comprising a dynamoelectric generator unit and a magnet unit which can be moved relative to the generator unit by an external magnetic field acting on it, the generator unit also being used in this way the magnet unit is coupled so that it converts the movement of the magnet unit into electrical energy for operating the functional unit.
- the invention is based on the idea of carrying out an indirect energy conversion for supplying the medical implant by transferring the movement of the external magnetic field to the magnet unit and converting the kinetic energy of the magnet unit into electrical energy by the generator unit.
- the implant according to the invention merely requires a force coupling through the external magnetic field across a tissue boundary with the magnet unit.
- the implant according to the invention also has better electromagnetic compatibility. in the In comparison to supplying an implant with a percutaneous cable, there are also no risks of complications as a result of the cable being surgically produced.
- the magnet unit can only consist of a ferromagnetic, not necessarily magnetized, material which can be coupled to the external magnetic field.
- the magnet unit preferably has a permanent magnet for interaction with the external magnetic field.
- a magnetic effect of the magnet unit can only be generated temporarily, in particular by an electromagnet.
- the electromagnet can be energized by an electrical energy source of the implant to generate its magnetic field, especially if the implant also enables an autonomous energy supply and / or has an energy storage unit.
- the magnet unit is also preferably arranged such that it can rotate.
- the magnet unit is designed as a flywheel or arranged on a flywheel.
- Different configurations of the flywheel are conceivable for producing the force coupling with the external magnetic field: the flywheel can have differently magnetized segments distributed over its essentially circular base area. It is then possible to couple the flywheel to a colinear flywheel that generates the external magnetic field.
- the flywheel can also be arranged in such a way that it can be coupled via its outer surface to an outer flywheel arranged parallel to the axis, which generates the external magnetic field.
- the magnet unit is arranged such that it can be moved back and forth in translation. Then the magnet unit is typically rod-shaped.
- the generator unit typically has a stand and a movable element which is coupled to the magnet unit in motion, with a Movement of the movable element a voltage can be inducible in the stand.
- the movable element can be arranged in a rotating or translatory manner with respect to the stand.
- the movable element which is arranged rotatably with respect to the stand can be coupled to the magnet unit which is arranged to be rotatably movable.
- the implant can have a shaft that forms a drive shaft of the generator unit.
- the implant has a common shaft for the flywheel and the generator unit.
- the shaft can be coupled to a drive shaft of the generator unit, for example via a gear.
- the shafts can also be arranged eccentrically to one another.
- the movable element which is arranged in a translatory manner with respect to the stand can be coupled via a rigid connection to the magnet unit which is arranged so as to be movable back and forth.
- the movable element which is arranged in a translatory manner with respect to the stand and the magnetic unit which is arranged to be rotatably movable or the movable element which is arranged in a rotating manner with respect to the stand and the magnetic unit which is arranged in a translationally movable manner forwards and backwards can be coupled via crank or cam mechanisms.
- the functional unit In the medical implant according to the invention, it is fundamentally possible for the functional unit to be operated directly by the electrical energy converted by the generator unit. This is particularly conceivable in the case of a functional unit that only has to be operated temporarily.
- the implant can have an energy storage unit which is designed to store the energy converted by the generator unit and to provide the stored energy to the functional unit.
- the energy storage unit has, for example, an electrochemical energy storage element, such as an accumulator, and / or an electrostatic energy storage element, such as a supercapacitor.
- the supply of the implant by means of the external magnetic field can thus also be understood as charging the implant.
- the implant according to the invention has a power electronics unit by means of which the energy converted by the generator unit can be deformed for operating the functional unit and / or for storing in the energy storage unit ,
- the functional unit can be set up to replace or support a body function of a patient.
- the body function can include, in particular, opening and / or keeping open and / or closing a cavity (lumen).
- the functional unit is particularly preferably designed to perform a urological function.
- the functional unit can be designed, for example, as an artificial sphincter.
- the artificial sphincter can be used to replace an insufficient bladder sphincter and thus to restore urinary continence.
- An example of an artificial sphincter is described in the unpublished German patent application DE 10 2017 115 288 A1.
- an additional energy supply can be provided by means of the generator unit, which supplements an autonomous energy supply of the functional unit.
- the generator unit described in the patent application which is set up to convert kinetic energy of the urine flow into electrical energy, is used as the generator unit of the implant according to the invention.
- the present invention relates to an operating device, in particular for a medical implant according to the invention, comprising a motor unit and a magnet unit which is coupled to the motor unit in such a way that it generates an external magnetic field for moving an magnet unit on the implant side.
- the operating unit-side magnet unit expediently has a permanent magnet or an electromagnet.
- the operating device-side magnet unit is furthermore preferably arranged such that it can rotate.
- the magnet unit is designed as a flywheel or is arranged on a flywheel.
- the flywheel can have differently magnetized segments distributed over its essentially circular base area. It is then possible to couple the flywheel to a collinearly arranged implant-side flywheel.
- the flywheel can also be arranged in such a way that it can be coupled via its outer surface to an implant-side flywheel arranged parallel to the axis.
- the magnet unit is arranged such that it can be moved back and forth in translation. Then the magnet unit is typically rod-shaped.
- the motor unit typically has a stand and a movable element which is coupled to the magnetic unit in a moving manner, wherein energization of the stand can cause the movable element to move.
- the movable element can be arranged rotating with respect to the stand.
- the motor unit has a movable element arranged translationally with respect to the stator.
- the movable element arranged in rotation with respect to the stand can be coupled to the magnet unit which is arranged in such a way that it can rotate.
- the implant can have a shaft that forms an output shaft of the motor unit.
- the operating device has a common shaft for the flywheel and the generator unit.
- the shaft can be coupled to an output shaft of the motor unit, for example via a gear.
- the movable element which is arranged in a translatory manner with respect to the stand can be coupled via a rigid connection to the magnet unit which is arranged so as to be movable back and forth. That translationally with respect to the stand arranged movable element and the rotatably movably arranged magnetic unit or the rotatably arranged movable element with respect to the stand and the translationally moved back and forth magnet unit can be coupled via crank or cam mechanisms.
- the operating device preferably also has a supply unit, by means of which the motor unit can be driven electrically.
- the supply unit can have a connection unit for connecting to an external voltage source.
- the connection unit can have a power connection, in particular a mains connection.
- the connection unit can be designed with a power pack or without a power pack.
- the supply unit can have an electrical energy storage unit.
- the energy storage unit can have a battery or an accumulator.
- the operating device according to the invention can have a patient receptacle, with respect to which the magnet device on the operating device side is arranged such that the magnet unit of the implant, which is implanted in a patient located on the patient receptacle, can be moved by the magnet unit.
- a patient admission is particularly advantageous in those applications in which the implant is supplied, in particular charged, over a long period of time and the patient stays in the vicinity of the magnet unit on the operating device side for a correspondingly long time.
- the patient admission is, for example, a lying surface or a seating surface.
- the operating device according to the invention can alternatively be designed as a portable device, in particular as a hand-held device.
- the operating device can expediently be attached to the body of a patient such that the magnet unit of the implant which is implanted in the patient's body can be moved by the magnet unit of the operating device.
- the operating device comprises, for example, a belt, in particular an elastic belt or, in particular a textile, belt.
- the operating device can also be a piece of clothing comprise, in which at least the magnet unit are inserted and / or sewn, or can be inserted or sewn into a garment.
- the present invention relates to a medical product which has a medical implant according to the invention and an operating device according to the invention for the medical implant.
- the present invention relates to a method for the electrical supply of a medical implant, comprising an electrically operable functional unit, a dynamoelectric generator unit and a magnet unit which is moved relative to the generator unit by an external magnetic field acting on it, the generator unit converts the movement of the magnet unit into electrical energy for operating the functional unit.
- the generator unit can convert kinetic energy of the motor unit driven by the external magnetic field into electrical energy.
- FIG. 1 shows a block diagram of an exemplary embodiment of the medical product according to the invention, comprising an exemplary embodiment of the medical implant according to the invention and an exemplary embodiment of the operating device according to the invention;
- FIG. 1 is a block diagram of an exemplary embodiment of a medical product 1, comprising an exemplary embodiment of a medical implant 2 and an exemplary embodiment of an operating device 3 for the implant 2.
- the implant 2 has an electrically operable functional unit 4, a dynamo-electric generator unit 5 and a magnet unit 6, which can be moved relative to the generator unit 5 by an external magnetic field acting on it. This is coupled to the magnet unit 5 in such a way that it converts the movement of the magnet unit 6 into electrical energy for operating the functional unit 4.
- the functional unit 4 is designed as an artificial sphincter and accordingly carries out a urological function.
- the magnet unit 6 comprises a permanent magnet 7 and is designed as a flywheel 8. In this way, the magnet unit 6 tracks a movement of the external magnetic field and transmits it to a shaft 9.
- the shaft 9 simultaneously forms a drive shaft of the generator unit 5, which converts the rotational energy of the magnet unit 6 into electrical energy.
- the shaft 9 is coupled to a separate drive shaft of the generator unit 5 via a transmission.
- the implant 2 also has an energy storage unit 10 and a power electronics unit 11.
- the converted electrical energy is made available to the functional unit 4 on the one hand directly via the power electronics unit 11, which converts the energy into a voltage and current position suitable for operation.
- the converted energy is stored in the energy storage unit 10 after it has been transformed by the power electronics unit 11 and is made available indirectly to the functional unit 4 for its operation.
- the energy storage unit 10 comprises an electrochemical energy storage element 12 in the form of an accumulator and / or an electrostatic energy storage element 13 in the form of a supercapacitor.
- the operating device 3 has a motor unit 14 and a magnet unit 15, which is coupled to the motor unit 14 in such a way that it generates the outer magnetic field for moving the magnet unit 6 on the implant side.
- the external magnetic field thus penetrates a tissue boundary 16 between the operating device 3 and the implant 2.
- the motor unit 14 and the magnet unit 15 are coupled by means of a shaft 17 which, like the implant 2, is designed as a common shaft 17.
- the motor unit 14 and the magnet unit 15 each have a shaft which are coupled to one another via a transmission.
- the magnet unit 15 has a permanent magnet 18 or an electromagnet and is also designed as a flywheel 19. If the flywheels 8, 19 are therefore arranged colinearly with respect to one another, a force coupling is created by the external magnetic field, as a result of which the implant-side flywheel 8 tracks a rotation of the flywheel 19 on the operating device side caused by the motor unit 14.
- the operating device 3 has a supply unit 20, by means of which the motor unit 14 can be driven electrically.
- a connection unit 21 for connecting the operating device 3 to an external voltage source and an electrical energy storage unit 22 in the form of a battery or an accumulator are provided.
- the electrical energy provided by the supply unit 20 is consequently converted into mechanical energy, that is to say kinetic or rotational energy, by means of the motor unit 14 and transmitted to the generator unit 5 of the implant 2 by the force coupling of the magnet units 6, 15, which mechanically in turn converts the electrical energy into the electrical energy for operating the functional unit 4.
- the operating device 3 therefore also acts as a charging device.
- the operating device 3 also has a patient receptacle in the form of a lying surface or a seat surface.
- the patient receptacle is arranged such that the magnet unit 6 of the implant 2 can be moved by the magnet unit 15 of the operating device 3 when a patient, to whom the implant 2 has been implanted, lies or sits on the patient receptacle.
- the operating device 3 is designed as a portable device, for example as a hand-held device.
- the operating device 3 is designed as a piece of clothing or comprises one.
- FIG. 2 to 5 are schematic diagrams of components of an implant and an operating device according to further exemplary embodiments, which otherwise correspond to one of the previously described exemplary embodiments.
- the same or equivalent components are provided with identical reference numerals as in Fig. 1.
- FIG. 2 is a schematic diagram of a generator unit 5 and a magnet unit 6 of a further exemplary embodiment of an implant and a magnet unit 15 of a further exemplary embodiment of an operating device.
- the generator unit has a stand 20 and a magnetically movable element 21.
- the magnet unit 6 has a permanent magnet 7 designed as a bar magnet and is coupled to the movable element 21 in a translationally movable manner via a linear guide 22.
- the operating unit-side magnet unit 15 comprises a flywheel 19, on which permanent magnets 18 are arranged. If the magnet unit 15 or the flywheel 19 rotates, the external magnetic field generated by the permanent magnets 18 moves and moves the implant-side magnet unit 6 back and forth along the linear guide 22.
- FIG. 3 is a schematic diagram of a generator unit 5 and a magnet unit 6 of a further exemplary embodiment of an implant and a motor unit 14 and a magnet unit 15 of a further exemplary embodiment of an operating device.
- the generator unit 5 and the magnet unit 6 correspond here to the exemplary embodiment shown in FIG. 2.
- the magnet unit 15 On the operating device side, the magnet unit 15 has a permanent magnet 18 in the form of a bar magnet, which is coupled to the motor unit 14 via a linear guide 23.
- the magnet unit 15 is arranged such that it can be moved in translation. If the magnetic unit 15 or the permanent magnet 18 moves back and forth, the outer magnet generated by the permanent magnet 18 moves and translationally moves the magnet unit 6 on the implant side back and forth as in FIG. 2.
- FIG. 4 is a schematic diagram of a generator unit 5 and a magnet unit 6 of a further exemplary embodiment of an implant and a motor unit 14 and a magnet unit 15 of a further exemplary embodiment of an operating device.
- the generator unit 5 here has a stand 20 and a rotatingly arranged movable element 21 in the form of a rotor.
- the magnetic unit 6 is coupled to the movable element 21 via a shaft 9 and has a flywheel 8 with permanent magnets 7 arranged on its lateral surface.
- the magnet unit 15 of the operating device is arranged axially parallel to the magnet unit 6 or to the flywheel 8 and also has a flywheel 19 with permanent magnets 18 arranged on its outer surface.
- the magnet unit 15 is coupled to the motor unit 14 via a shaft 17. When the magnet unit 15 rotates, the external magnetic field generated by the permanent magnets 18 rotates and rotates the implant-side magnet unit 6, so that the movable element 21 rotates. As a result, a voltage is induced in the stator 20.
- FIG. 5 shows a motor unit 14 and a magnet unit 15 of a further exemplary embodiment of an operating device.
- the motor unit 14 has a rotatably arranged movable element 24, an associated stand not being shown.
- the movable element 24 is connected via a crank mechanism 25 a bar magnet 18 of a magnet unit 15 which corresponds to that shown in FIG. 3.
- the magnet unit 15 moves back and forth, so that a correspondingly moving external magnetic field is generated which, as in FIG. 3, moves the magnet unit 6 of an implant.
- the coupling by means of the crank mechanism 25 can be transferred analogously to the coupling between the movable element 21 and the magnet unit 6 of the implant.
- the illustrated arrangements of the generator unit 4, the magnet units 6, 15 and the motor unit 14 shown in FIGS. 2 to 5 are exemplary, the movement forms and couplings shown also being able to be combined with one another.
- electromagnets can also be used instead of the permanent magnets 7, 18.
Landscapes
- Health & Medical Sciences (AREA)
- Engineering & Computer Science (AREA)
- Biomedical Technology (AREA)
- Nuclear Medicine, Radiotherapy & Molecular Imaging (AREA)
- Radiology & Medical Imaging (AREA)
- Life Sciences & Earth Sciences (AREA)
- Animal Behavior & Ethology (AREA)
- General Health & Medical Sciences (AREA)
- Public Health (AREA)
- Veterinary Medicine (AREA)
- Prostheses (AREA)
- Electrotherapy Devices (AREA)
Abstract
Description
Claims
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| DE102018114829.1A DE102018114829B3 (de) | 2018-06-20 | 2018-06-20 | Medizinisches Implantat, Bedienungsvorrichtung für ein medizinisches Implantat, Medizinprodukt und Verfahren zur elektrischen Versorgung eines medizinischen Implantats |
| PCT/EP2019/064794 WO2019243070A1 (de) | 2018-06-20 | 2019-06-06 | Medizinisches implantat, bedienungsvorrichtung für ein medizinisches implantat, medizinprodukt und verfahren zur elektrischen versorgung eines medizinischen implantats |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| EP3810263A1 true EP3810263A1 (de) | 2021-04-28 |
Family
ID=66794007
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| EP19729270.9A Withdrawn EP3810263A1 (de) | 2018-06-20 | 2019-06-06 | Medizinisches implantat, bedienungsvorrichtung für ein medizinisches implantat, medizinprodukt und verfahren zur elektrischen versorgung eines medizinischen implantats |
Country Status (3)
| Country | Link |
|---|---|
| EP (1) | EP3810263A1 (de) |
| DE (1) | DE102018114829B3 (de) |
| WO (1) | WO2019243070A1 (de) |
Families Citing this family (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE102021120144A1 (de) | 2021-08-03 | 2023-02-09 | Friedrich-Alexander-Universität Erlangen-Nürnberg - Selbstverwaltungskörperschaft des öffentlichen Rechts | Implantat und Verfahren für den Betrieb eines derartigen Implantats |
| DE102022115028B3 (de) | 2022-06-15 | 2023-10-12 | Friedrich-Alexander-Universität Erlangen-Nürnberg, Körperschaft des öffentlichen Rechts | Implantat oder Katheter |
| CN116191818A (zh) * | 2023-03-07 | 2023-05-30 | 珠海冠宇电池股份有限公司 | 发电装置、电池系统及电子设备 |
| CN116207944A (zh) * | 2023-03-07 | 2023-06-02 | 珠海冠宇电池股份有限公司 | 发电装置、电池系统及电子设备 |
Family Cites Families (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1222254C (zh) * | 2000-02-10 | 2005-10-12 | 波滕西亚医疗公司 | 用无线能量源进行尿失禁治疗 |
| US8202248B2 (en) * | 2004-08-18 | 2012-06-19 | Sequana Medical Ag | Dialysis implant and methods of use |
| US8221439B2 (en) * | 2008-02-07 | 2012-07-17 | Ethicon Endo-Surgery, Inc. | Powering implantable restriction systems using kinetic motion |
| DE102009001042A1 (de) * | 2009-02-20 | 2010-08-26 | Biotronik Crm Patent Ag | Aktives medizinisches Implantat |
| KR100982947B1 (ko) * | 2010-04-20 | 2010-09-17 | 오현섭 | 회전자기장장치가 설치된 의자 |
| US9577459B2 (en) | 2013-03-15 | 2017-02-21 | Sequana Medical Ag | Systems and methods for regulating inductive energy transfer to an implantable system |
| DE102017115288A1 (de) | 2017-01-16 | 2018-07-19 | Friedrich-Alexander-Universität Erlangen-Nürnberg | Künstlicher Schließmuskel |
-
2018
- 2018-06-20 DE DE102018114829.1A patent/DE102018114829B3/de active Active
-
2019
- 2019-06-06 EP EP19729270.9A patent/EP3810263A1/de not_active Withdrawn
- 2019-06-06 WO PCT/EP2019/064794 patent/WO2019243070A1/de not_active Ceased
Also Published As
| Publication number | Publication date |
|---|---|
| DE102018114829B3 (de) | 2019-10-10 |
| WO2019243070A1 (de) | 2019-12-26 |
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