EP4385046A1 - Elektrische durchführung - Google Patents
Elektrische durchführungInfo
- Publication number
- EP4385046A1 EP4385046A1 EP22764661.9A EP22764661A EP4385046A1 EP 4385046 A1 EP4385046 A1 EP 4385046A1 EP 22764661 A EP22764661 A EP 22764661A EP 4385046 A1 EP4385046 A1 EP 4385046A1
- Authority
- EP
- European Patent Office
- Prior art keywords
- weight
- percent
- glass
- glass composition
- less
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Pending
Links
Classifications
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01B—CABLES; CONDUCTORS; INSULATORS; SELECTION OF MATERIALS FOR THEIR CONDUCTIVE, INSULATING OR DIELECTRIC PROPERTIES
- H01B17/00—Insulators or insulating bodies characterised by their form
- H01B17/26—Lead-in insulators; Lead-through insulators
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01B—CABLES; CONDUCTORS; INSULATORS; SELECTION OF MATERIALS FOR THEIR CONDUCTIVE, INSULATING OR DIELECTRIC PROPERTIES
- H01B17/00—Insulators or insulating bodies characterised by their form
- H01B17/56—Insulating bodies
- H01B17/62—Insulating-layers or insulating-films on metal bodies
-
- C—CHEMISTRY; METALLURGY
- C03—GLASS; MINERAL OR SLAG WOOL
- C03C—CHEMICAL COMPOSITION OF GLASSES, GLAZES OR VITREOUS ENAMELS; SURFACE TREATMENT OF GLASS; SURFACE TREATMENT OF FIBRES OR FILAMENTS MADE FROM GLASS, MINERALS OR SLAGS; JOINING GLASS TO GLASS OR OTHER MATERIALS
- C03C3/00—Glass compositions
- C03C3/04—Glass compositions containing silica
- C03C3/076—Glass compositions containing silica with 40% to 90% silica, by weight
- C03C3/089—Glass compositions containing silica with 40% to 90% silica, by weight containing boron
- C03C3/091—Glass compositions containing silica with 40% to 90% silica, by weight containing boron containing aluminium
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01B—CABLES; CONDUCTORS; INSULATORS; SELECTION OF MATERIALS FOR THEIR CONDUCTIVE, INSULATING OR DIELECTRIC PROPERTIES
- H01B3/00—Insulators or insulating bodies characterised by the insulating materials; Selection of materials for their insulating or dielectric properties
- H01B3/02—Insulators or insulating bodies characterised by the insulating materials; Selection of materials for their insulating or dielectric properties mainly consisting of inorganic substances
- H01B3/08—Insulators or insulating bodies characterised by the insulating materials; Selection of materials for their insulating or dielectric properties mainly consisting of inorganic substances quartz; glass; glass wool; slag wool; vitreous enamels
- H01B3/087—Chemical composition of glass
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01R—ELECTRICALLY-CONDUCTIVE CONNECTIONS; STRUCTURAL ASSOCIATIONS OF A PLURALITY OF MUTUALLY-INSULATED ELECTRICAL CONNECTING ELEMENTS; COUPLING DEVICES; CURRENT COLLECTORS
- H01R13/00—Details of coupling devices of the kinds covered by groups H01R12/70 or H01R24/00 - H01R33/00
- H01R13/40—Securing contact members in or to a base or case; Insulating of contact members
- H01R13/405—Securing in non-demountable manner, e.g. moulding, riveting
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- 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
- A61N1/375—Constructional arrangements, e.g. casings
- A61N1/3752—Details of casing-lead connections
- A61N1/3754—Feedthroughs
Definitions
- the invention relates to an electrical feedthrough with a metal-enclosing base body in which an insulating material enclosing glass is accommodated with an electrical conductor extending through it.
- Electrical feedthroughs with an outer metallic base body and an inner glass component (glass-metal feedthroughs) serving as an insulator, through which one or more conductors extend, are used in numerous applications, in particular for hermetic wall parts, such as housing elements.
- Corresponding components are used, for example, in the field of medical technology, e.g. B. in implantable medical devices (IMD), in the field of oil and/or gas exploration, in aviation and in many other areas, whereby on the one hand different requirement profiles may have to be taken into account depending on the area of application and on the other hand there are commonalities with regard to optimization and further development known solutions exist.
- IMD implantable medical devices
- the components used are not toxic if they come into contact with body fluids at least temporarily or permanently (in the case of implants). can come .
- the present invention provides a bushing which comprises a base body with at least one through-opening running through the base body, an insulating material which is accommodated in the through-opening running through the base body, and at least one electrical conductor which extends through the insulation material accommodated in the through-opening, the base body comprising titanium or a titanium alloy and the insulation material glass comprises, and wherein the insulating material to the base body at least partially has a contact angle which is less than 90 degrees.
- an insulating material with or made of glass and at least one Area-wise contact angles of less than 90 degrees can in particular improve the tightness of the insulation material to the enclosing base body or increase the resistance of the bushing to physical and/or chemical influences. In particular, a higher mechanical load capacity can be achieved. With a contact angle of less than 90 degrees, improved glazing can be achieved and, for example, the accumulation of liquids at the material transition can be reduced, so that stress cracks, for example, can be avoided. With the use of titanium or titanium alloys, high corrosion resistance, high strength, in particular with relatively low density, and/or avoidance of cytotoxicity, in particular for use in the medical field, can be made possible.
- the contact angle of the insulation material to the base body is between 56 and 86 degrees, preferably between 62 and 84 degrees, particularly preferably between 68 and 82 degrees, even more preferably between 70 and 80 degrees.
- the insulating material has a contact angle to the electrical conductor at least in some areas, which is between 56 and 86 degrees, preferably between 62 and 84 degrees, particularly preferably between 68 and 82 degrees, more preferably between 70 and 80 degrees.
- the electrical conductor can include or consist of a metal, for example materials such as NiFe alloys, niobium, platinum, platinum alloys and/or molybdenum.
- the electrical conductor can have a coefficient of thermal expansion of between 5 and 9 ppm/K, preferably between 7 and 9 ppm/K. In connection with a base body with or made of titanium, pressure encapsulation can thereby be provided, as a result of which the mechanical robustness can be increased.
- the insulation material preferably provides electrical insulation of at least 1 GOhm, in particular at temperatures of 175° C. or 200° C. Furthermore, a flashover strength of at least IV/pm, in particular at these temperatures, is preferably provided.
- the glass of the insulation material has a glass composition which contains B2O3 and SiCh, the ratio of the proportion of B2O3 in percent by weight to the proportion of SiCh in percent by weight being at least 0.45, preferably is at least 0.47 , more preferably at least 0.49 . It is possible for the glass of the insulation material to have a glass composition which contains B2O3 and SiCh, the ratio of the proportion of B2O3 in percent by weight to the proportion of SiCt in percent by weight being between 0.45 and 0.65, preferably between 0. 47 and 0.64, particularly preferably between 0.49 and 0.63.
- the glass of the insulation material has a glass composition that contains B2O3, the proportion of B2O3 in the glass composition being at least 21 percent by weight, preferably at least 22 percent by weight, particularly preferably at least 23 percent by weight, or at least 25 percent by weight.
- the glass of the insulation material prefferably has a glass composition that contains B2O3, with the proportion of B2O3 in the glass composition being between 21 and 33 percent by weight, preferably between 22 and 32 percent by weight, particularly preferably between 23 and 31 percent by weight, or is between 25 and 30% by weight.
- the use of titanium or titanium alloys with regard to chemical reactions can result in the peculiarity that the glass-forming oxide SiCt reacts with titanium to form titanium silicide, which can result in detachment phenomena in the glass-metal contact zone.
- This problem can be reduced or avoided in particular by the above information on the glass composition.
- B2O3 suppresses this reaction and leads to a TiB layer, which leads to chemically and mechanically more stable connections between a titanium-containing component and the glass.
- titanium is highly reactive.
- the above-mentioned glass compositions can be used to reduce or prevent the titanium from reacting with SiCh to form titanium silicide during melting (e.g. at melting temperatures of e.g. 700 to 900°C), and this reaction being accompanied, for example, by the formation of bubbles at the interface.
- the glass of the insulation material can have a softening point of at most 750°C, preferably at most 700°C, particularly preferably at most 680°C.
- the glass of the insulating material can have a spherical temperature of at most 850°C, preferably at most 800°C, particularly preferably at most 780°C.
- the glass of the insulating material can have a hemispherical temperature of at most 950°C, preferably at most 900°C, particularly preferably at most 850°C.
- the glass of the insulation material can have a flow temperature of at most 1050°C, preferably at most 1000°C, particularly preferably at most 950°C.
- the aforementioned properties can, e.g. in the case of a glass composition with the above-mentioned EGOa contents, preferably make it possible for the boron content to be sufficiently retained during melting.
- the glass of the insulation material can preferably have a resistance when stored in a saline solution at 37.5°C.
- the glass of the insulation material has a glass composition that contains Al2O3, the proportion of Al2O3 in the glass composition being at least 3 percent by weight, preferably at least 7 percent by weight, particularly preferably at least 9 percent by weight.
- the glass of the insulation material prefferably has a glass composition that contains Al2O3, with the proportion of Al2O3 in the glass composition being between 3 and 17 percent by weight, preferably at least 7 and 16.5 percent by weight, particularly preferably at least 9 and 15 percent by weight lies.
- the glass of the insulating material can have a glass composition which contains Na2 ⁇ 3, the proportion of Na2 ⁇ 3 in the glass composition being at least 10 percent by weight, preferably at least 12 percent by weight.
- the glass of the insulation material has a glass composition which contains CaO, the proportion of CaO in the glass composition being at most 11 percent by weight, preferably at most 10 percent by weight, particularly preferably at most 7 percent by weight.
- the glass of the insulating material can have a glass composition that contains OO2, the proportion of OO2 in the glass composition being at most 10 percent by weight, preferably at most 5 percent by weight, particularly preferably at most 4.5 percent by weight.
- the glass of the insulation material has a glass composition that contains no K2O or contains K2O, the proportion of K2O in the glass composition being less than 7 % by weight, preferably less than 5% by weight, more preferably less than 3% by weight.
- the glass of the insulating material can also have a glass composition which does not contain LiCh or contains LiCh, the proportion of LiCh in the glass composition being less than 2% by weight, preferably less than 1% by weight, particularly preferably less than 0.5% by weight. This can be advantageous for cost reasons, among other things. Furthermore, this can be advantageous with regard to avoiding undesired reactions with pharmaceuticals.
- the glass of the insulation material has a glass composition which does not contain MgO or contains MgO, the proportion of MgO in the glass composition being less than 10 percent by weight, preferably less than 6.5 percent by weight, particularly preferably less than 5 percent by weight.
- the glass of the insulation material can also have a glass composition which does not contain ZrO2 or contains ZrO2, the proportion of ZrO2 in the glass composition being less than 0.9% by weight, preferably less than 0.5% by weight, particularly preferably less than 0.1 percent by weight.
- the viscosity of the glass can advantageously be reduced and the glazing improved.
- this can be advantageous in terms of costs.
- the glass of the insulation material has a glass composition which does not contain La2Oa or contains La2Os, the proportion of La2Os in the glass composition being less than 1.5 percent by weight, preferably less than 1 percent by weight, particularly preferably less than 0 .5 percent by weight. This can be advantageous for cost reasons, among other things.
- the glass of the insulation material has a glass composition which does not contain Ta2Os or contains Ta2Os, the proportion of Ta2Os in the glass composition being less than 2 percent by weight, preferably less than 1 percent by weight, particularly preferably less than 0.5 percent by weight. This can be advantageous for cost reasons, among other things.
- the glass of the insulation material can also have a glass composition which does not contain Nb2Os or contains Nb2Os, the proportion of Nb2Os in the glass composition being less than 2% by weight, preferably less than 1% by weight, particularly preferably less than 0.5% by weight. This can be advantageous for cost reasons, among other things. In addition, too high a proportion of Nb2Os can have a negative effect on the glazing due to polyvalence.
- the glass of the insulation material has a glass composition that does not contain PbO or contains PbO, the proportion of PbO in the glass composition being less than 0.05 percent by weight, preferably less than 0.03 percent by weight, particularly preferably less than 0.01% by weight.
- the glass can thus in particular be essentially free of PbO.
- the glass of the insulation material has a glass composition which does not contain BaO or contains BaO, the proportion of BaO in the glass composition being less than 10 percent by weight, preferably less than 7 percent by weight, particularly preferably less than 5 percent by weight .
- the glass can be essentially free of BaO. This can be advantageous in terms of avoiding toxicity.
- the glass of the insulating material can also have a glass composition which does not contain V2O5 or contains V2O5, the proportion of V2O5 in the glass composition being less than 0.5% by weight, preferably less than 0.3% by weight, particularly preferably less than 0.1 percent by weight. This can be advantageous both in terms of avoiding toxicity and for reasons of cost.
- the glass of the insulation material can have a glass composition which does not contain Bi20a or contains B12O3, the proportion of Bi20a in the glass composition being less than 2% by weight, preferably less than 1% by weight, particularly preferably less than 0.5% by weight. This can be advantageous with regard to the reaction with platinum.
- the glass of the insulation material has a glass composition that does not contain WOa or contains WO3, the proportion of WO3 in the glass composition being less than 2 percent by weight, preferably less than 1 percent by weight, particularly preferably less than 0.5 percent by weight. This can be advantageous in terms of avoiding components whose oxidation state can be easily shifted.
- the glass of the insulation material can have a glass composition that does not contain M0O3 or contains M0O3, the proportion of M0O3 in the glass composition being less than 2 percent by weight, preferably less than 1 percent by weight, particularly preferably less than 0.5 percent by weight. This can be advantageous in terms of avoiding components whose oxidation state can be easily shifted.
- the avoidance of polyvalent components can be advantageous due to partly unknown interactions with the environment and can therefore be provided.
- the thermal expansion coefficient (GTE) of the glass it can be provided that the glass of the insulation material has a CTE (20°C; 300°C) which is in the range from 5 to 10 ppm/K, preferably in the range of 6 to 9 ppm/K, particularly preferably in the range from 7 to 8 ppm/K.
- the glass of the insulation material can have a density which is in the range from 2.30 to 2.45 g/cm 3 , preferably in the range from 2.32 to 2.43 g/cm 3 , in particular in the range from 2.33 to 2.42 g/ cm3 .
- the glass of the insulating material has a glass transition temperature Tg which is lower than 590°C, preferably lower than 570°C, particularly preferably lower than 550°C.
- the glass of the insulating material can have a glass transition temperature Tg which is in the range from 440 to 590.degree. C., preferably in the range from 460 to 570.degree. C., particularly in the range from 480 to 550.degree.
- Tg glass transition temperature
- the implementation can in addition to an electrical signal transmission via the electrical conductors also allow optical signal transmission.
- the insulation material can have a light transmission T V is of at least 25%, preferably of at least 50%, particularly preferably of at least 75%, from one outer surface to the other along the passage opening running through the base body for at least one wavelength in the spectral range from 380 nm to 780 nm % exhibit .
- the feedthrough can also include an optical interface for transmitting light through the insulating material along the through-opening running through the base body.
- the insulation material is preferably free of graphite particles on at least one outer surface, in particular by the insulation material being melted into the through-opening without applying pressure to the outer surface, in particular without exerting pressure on the outer surface using carbon weights.
- the insulation material accommodated in the through-opening of the base body is in contact with the base body and/or with the at least one electrical conductor such that the contact surface between the insulation material and the base body and/or the bushing has a hermeticity which is characterized by a helium leak rate of less than 1 -10 -8 mbar -l/s, preferably less than 1 -10 -9 mbar -l/s, particularly preferably less than 1 -10" 10 mbar -l/s.
- the hermeticity of bushings can be checked, for example, by a helium leak test.
- the feedthrough preferably has a plurality of electrical conductors, which extend through the insulating material accommodated in the through-opening, preferably at least 2 electrical conductors, particularly preferably at least 10 electrical conductors.
- the base body can comprise a plurality of through-openings, each with insulating material accommodated therein, with at least one, in particular precisely one, electrical conductor in each case extending through the insulating material of a through-opening.
- the base body comprising titanium or a titanium alloy can be plate-shaped.
- the base body can have a first and an opposite second surface, with the through-opening forming an inner wall which connects the first to the second surface.
- the base body can define a plane which runs parallel to the first and/or second surface. In a direction that runs parallel to the first and/or second surface and/or runs in the aforementioned plane, the main body can have a dimension that is larger than the diameter of the through-opening, in particular at least twice as large, in particular at least three times is that big.
- the insulation material located in the through-opening can be placed on both sides of the base body, d. H . both on the side of the first surface and on the side of the second surface have a contact angle of less than 90°, in particular a contact angle with the values mentioned above.
- the insulation material can be set back from the first and/or second surface of the base body. In other words, the insulation material can be accommodated in the through-opening in such a way that there is a step to the base body at the point of the inner wall.
- the base body can have a thickness perpendicular to its plane, which is greater than the thickness of the insulation material on the inner wall of the through-opening.
- the base body can also have this thickness over an extended dimension along the first and/or second surface and/or the plane, e.g. the base body can have this thickness at least in the area of twice the diameter of the through-opening, in particular in the area of three times the diameter.
- the conductor that extends through the insulating material can protrude beyond the insulating material and/or beyond the base body on one or both sides.
- the conductor can protrude from the first and/or second surface of the base body.
- the projection on one or both sides can be greater than the thickness of the base body on the inner wall, in particular at least twice as large, in particular at least three times as large.
- the overhang can be larger on one side than on the other side, in particular at least twice as large, in particular at least three times as large.
- the invention particularly relates to a feedthrough for an implant and/or an implant comprising a feedthrough as described above, wherein the glass of the Insulation material is not cytotoxic, in particular according to a standard-compliant determination according to EN ISO 10993-5 (July 2009 version).
- the bushing has at least two electrical conductors at a distance from one another which is less than 5 mm, preferably less than 1 mm.
- the largest dimension of the through-opening running through the base body perpendicular to the axis of the electrical conductor is less than 10 mm, preferably less than 2 mm.
- the invention also relates in particular to a bushing for an oil/gas exploration device and/or an oil/gas exploration device comprising a bushing as described above, the bushing having a shock resistance of at least 100 g, preferably at least 500 g, particularly preferably at least 750 g and/or withstands such a shock load while maintaining its hermetic capacity, in particular the hermetic capacity as described above.
- the bushing has a vibration resistance of at least 20 g rms, preferably at least 40 g rms, particularly preferably at least 60 g rms and/or such a vibration load while maintaining it its hermeticity, in particular the hermeticity as described above resists.
- the base body is non-magnetic.
- the invention can also relate in particular to a bushing for a wearable device and/or a wearable device comprising a bushing as described above.
- Fig. 1 a schematic representation of a feedthrough according to a first embodiment
- Fig. 2 a schematic representation of the in FIG. 1 implementation shown in cross section with marked contact angle between the insulation material and the base body or. electrical conductor,
- Fig. 3 a schematic representation of a feedthrough according to a second embodiment
- Fig. 4 a schematic representation of a feedthrough according to a third embodiment
- FIG. 1 has a implementation on an outer body 20 through which one or more Pass-through openings 22 (here two) run, in each case an insulating material 30 being introduced into a through-opening 22, through which at least one electrical conductor 40 extends.
- the conductor can protrude from the insulation material on one or both sides (here on both sides).
- the bushing shown has two inner conductors (pins) and can therefore be described as a 2-pole bushing. It is possible that the base body 20 serves as an outer conductor and thus forms a further electrical conductor.
- the insulating material 30 introduced into the through-opening 22 has a contact angle 0 to the surrounding base body 20 which is less than 90 degrees.
- the insulating material 30 can preferably also have a contact angle 0′ with respect to the electrical conductor 40, which is less than 90 degrees.
- a weight for example a carbon mold, can be used in order to achieve the or certain contact angles 0 or 0′. However, this can sometimes be less practical with a higher pin count.
- a bushing can also have a large number of inner conductors (pins), so that, for example, a 17-pole bushing (FIG. 3) or a 30-pole bushing (FIG. 4) can be provided.
- each individual inner conductor 40 extends through the insulating material of a single through-opening 22.
- a plurality or multiplicity of electrical conductors it is also possible for a plurality or multiplicity of electrical conductors to extend through the same insulating material of the same through-opening 22.
- the insulating material 30 can be designed in particular as high borate glass. It can be provided, for example, that the glass of the insulating material has a glass composition which contains B2O3 and SiCh, the ratio of the proportion of B2O3 in percent by weight to the proportion of SiCh in percent by weight being at least 0.36 and/or that the glass of the insulating material has a glass composition which contains B2O3, the proportion of B2O3 in the glass composition being at least 20% by weight.
- the glass of the insulating material can have a maximum softening point of 680° C., a maximum spherical temperature of 780° C., and a maximum hemispherical temperature of 850° C and/or has a flow temperature of at most 950°C, preferably at most 940°C, particularly preferably at most 900°C.
- the glass of the insulating material can be glazed in at temperatures below 950°C, preferably below 940°C. This results in the preferred limitation of the characteristic feature pour point from the established methodology of heating microscopy (EHM) to a maximum of 940°C.
- the insulating material can include a glass with the following composition in % by weight:
- the insulating material can include a glass with the following composition in % by weight:
- the insulating material can comprise a glass with the above compositions, but with the following proportion of B2O3 in % by weight being contained: 25.0-28.6.
- the insulating material can comprise a glass with the above compositions, but with the following percentage by weight of MgO being present: less than 5.5, in particular less than 5, in particular less than 4.5.
- the insulating material can include a glass with one of the following compositions in % by weight (glass 1 to 5):
- glass 1 to glass 5 the following glass properties and powder properties could be determined using heating microscopy (EHM):
- the glass of the insulation material can also be mixed with coloring components, e.g. CoO, or pigments, e.g. spinel-based pigments.
- coloring components e.g. CoO
- pigments e.g. spinel-based pigments.
- the glass can include fillers, for example low-expansion fillers, for example cordierite.
- a proportion of low-expansion fillers can, under certain circumstances, make it possible to lower the thermal expansion coefficient of the glass.
- the reduction in the coefficient of thermal expansion (CTE) of the glass from 2 to a value of around 7.0 ppm/K can be adjusted, in particular without any significant loss of the relevant ones Characteristics.
- the test object is made of glass powder (like the pellets). This is mixed with deionized water until small lumps form, then pressed manually into a cylinder shape and sintered under nitrogen at about 30 to 40 °C above the "spherical" temperature.
- the test objects usually weigh 0.5 g.
- the saline solution is 0.9%. Approx. 120 ml of saline solution are heated to approx. 37 °C in a beaker.
- the test object lies on the edge of the beaker.
- a magnetic stirrer is adjusted so that the saline solution is clearly moving but the test object is not moving.
- the beaker is covered with a glass lid so that there are hardly any differences in concentration due to evaporation.
- the test object is weighed before the test and each day, and the relative weight loss is used as a comparison value.
- comparison glasses (compare 1 to 4) are listed below, which were characterized using the same methods as the above examples, glass 1 to glass 5.
- Comparative glasses Composition in % by weight:
- Comparative glasses Glass properties and powder properties by heating microscopy (EHM):
- Comparative examples Properties of sintered parts: Storage in saline solution shows the comparison glass Comp. 1 shows that there is a 10-fold weight loss compared to the glasses mentioned above.
- the glass Comp. 4 showed insufficient flow on titanium, this type of glass spreads poorly on titanium.
- pressure e.g. in the form of weights, may be necessary.
- such a procedure is less preferred because it is more complex, especially for miniaturized designs and/or designs with complex pole geometries, for example designs with a plurality of electrical conductors and small distances between these conductors and/or designs with a large number of electrical conductors, e.g. more than 10 electrical conductors.
- Glasses 1 to 5 and comparison glasses 1 and 2 (without the use of weights) have a wetting angle or contact angle on titanium which is less than 90°C. This has a number of advantages when manufacturing feedthroughs. There is no need to press charcoal stamps onto the glass to achieve desired surface shapes; contamination and sticking of glass surfaces with carbon stamps (which can cause insulation problems) are avoided; and differences in expansion coefficients between carbon fixtures and metal components is not an obstacle in the design of fusible fixtures.
- the test glasses and comparison glasses were produced by melting the glasses on the 11 scale and forming them into castings and into ribbons about 1-2 cm wide. The cooled castings were used, among other things, to determine the density, the linear thermal expansion coefficient in the range from 20° C. to 300° C., ie GTE (20; 300° C.), and the viscosity fixed points Tg and Ew according to methods familiar to those skilled in the art.
- the linear thermal expansion coefficient GTE in the range from 20 to 300°C was determined from the determination of the length change behavior on solids with a length of 100 mm using dilatometry.
- the density is determined by means of a buoyancy measurement.
- the softening point Ew i.e. temperature of the viscosity [dPas] with 1g of 7.6 was determined by means of viscometry on a square thread.
- ribbons of the test glasses are ground to a defined grain size (K3) and then characterized.
- EHM heating microscopy
- the powders were sintered and characterized.
- the weight loss was determined on sintered bodies after remaining in chemical solutions that represent the different treatments in galvanic processes.
- compacts were produced from the ground powders of the test glasses and sintered. These sintered specimens were then immersed in baths simulating galvanic treatment and the loss in mass determined.
- the sinter samples were stored in 0.9% saline solution at 37.5° C. for a period of 1-24 days. The mass loss was then determined.
- cytotoxicity a cytotoxic effect of the test glasses was checked according to standard EN ISO 10993-5: Test for in vitro cytotoxicity. No cytotoxic effect was detected for the glasses according to the invention.
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- Chemical & Material Sciences (AREA)
- Materials Engineering (AREA)
- Engineering & Computer Science (AREA)
- Chemical Kinetics & Catalysis (AREA)
- General Chemical & Material Sciences (AREA)
- Geochemistry & Mineralogy (AREA)
- Life Sciences & Earth Sciences (AREA)
- Organic Chemistry (AREA)
- Inorganic Chemistry (AREA)
- Glass Compositions (AREA)
- Installation Of Indoor Wiring (AREA)
- Manufacturing Of Electrical Connectors (AREA)
- Connections Arranged To Contact A Plurality Of Conductors (AREA)
Abstract
Description
Claims
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| DE102021120789.4A DE102021120789A1 (de) | 2021-08-10 | 2021-08-10 | Elektrische Durchführung |
| PCT/EP2022/072193 WO2023016964A1 (de) | 2021-08-10 | 2022-08-08 | Elektrische durchführung |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| EP4385046A1 true EP4385046A1 (de) | 2024-06-19 |
Family
ID=83191891
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| EP22764661.9A Pending EP4385046A1 (de) | 2021-08-10 | 2022-08-08 | Elektrische durchführung |
Country Status (6)
| Country | Link |
|---|---|
| US (1) | US20240186035A1 (de) |
| EP (1) | EP4385046A1 (de) |
| JP (1) | JP2024531954A (de) |
| CN (1) | CN117836877A (de) |
| DE (1) | DE102021120789A1 (de) |
| WO (1) | WO2023016964A1 (de) |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE102024130333A1 (de) | 2024-10-18 | 2026-04-23 | Schott Ag | Autoklavierbare elektrische Durchführung und Glas für eine autoklavierbare elektrische Durchführung |
Family Cites Families (22)
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| US4280932A (en) * | 1979-02-12 | 1981-07-28 | General Electric Company | Magnesia insulated heating elements |
| AU638020B2 (en) | 1989-06-15 | 1993-06-17 | Medtronic, Inc. | Improved glass-metal seals |
| US5306581A (en) * | 1989-06-15 | 1994-04-26 | Medtronic, Inc. | Battery with weldable feedthrough |
| US5104755A (en) | 1989-06-15 | 1992-04-14 | Medtronic, Inc. | Glass-metal seals |
| US5821011A (en) * | 1989-10-11 | 1998-10-13 | Medtronic, Inc. | Body implanted device with electrical feedthrough |
| US5406444A (en) | 1993-03-29 | 1995-04-11 | Medtronic, Inc. | Coated tantalum feedthrough pin |
| US6274252B1 (en) * | 1994-08-04 | 2001-08-14 | Coors Ceramics Company | Hermetic glass-to-metal seal useful in headers for airbags |
| US6058782A (en) * | 1998-09-25 | 2000-05-09 | Kulite Semiconductor Products | Hermetically sealed ultra high temperature silicon carbide pressure transducers and method for fabricating same |
| US6159560A (en) | 1998-11-25 | 2000-12-12 | Stevenson; Robert A. | Process for depositing a metal coating on a metallic component of an electrical structure |
| JP2000228170A (ja) * | 1998-12-04 | 2000-08-15 | Toshiba Lighting & Technology Corp | 高圧放電ランプ、高圧放電ランプ装置、高圧放電ランプ点灯装置および照明装置 |
| US6759163B2 (en) * | 2000-05-04 | 2004-07-06 | Wilson Greatbatch Ltd. | Mismatched compression glass-to-metal seal |
| US6670074B2 (en) * | 2001-04-23 | 2003-12-30 | Wilson Greatbatch Ltd. | Glass to metal seal |
| US20030096162A1 (en) * | 2001-11-09 | 2003-05-22 | Lasater Brian J. | Lithium-ion battery seal |
| US20080085451A1 (en) | 2006-10-06 | 2008-04-10 | Greatbatch Ltd. | Highly Compact Electrochemical Cell |
| US10224521B2 (en) * | 2011-02-18 | 2019-03-05 | Schott Ag | Feed-through |
| US9206672B2 (en) | 2013-03-15 | 2015-12-08 | Fastcap Systems Corporation | Inertial energy generator for supplying power to a downhole tool |
| DE102014016600A1 (de) * | 2014-11-11 | 2016-05-12 | Schott Ag | Durchführung |
| DE102015207285B4 (de) * | 2015-04-22 | 2019-05-02 | Schott Ag | Glasiges oder zumindest teilweise kristallisiertes Einschmelzmaterial, Fügeverbindung, Sperrschicht, und Schichtsystem mit dem Einschmelzmaterial und dessen Integration in Bauteilen |
| DE102015115958A1 (de) * | 2015-09-22 | 2017-03-23 | Schott Ag | Medizinisches Glaselement |
| DE102017216422B3 (de) * | 2017-09-15 | 2019-01-03 | Schott Ag | Hochdehnendes Fügeglas mit verbesserter Wasserbeständigkeit und seine Anwendungen |
| KR20190094611A (ko) * | 2018-02-05 | 2019-08-14 | 주식회사 실텍 | 자동차용 전동압축기의 밀봉 피드스루 |
| DE102018220118A1 (de) | 2018-11-23 | 2020-05-28 | Schott Ag | Durchführung |
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2021
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- 2022-08-08 WO PCT/EP2022/072193 patent/WO2023016964A1/de not_active Ceased
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| WO2023016964A1 (de) | 2023-02-16 |
| DE102021120789A1 (de) | 2023-02-16 |
| US20240186035A1 (en) | 2024-06-06 |
| CN117836877A (zh) | 2024-04-05 |
| JP2024531954A (ja) | 2024-09-03 |
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