EP3843669A1 - Brustprothese und verfahren zu deren herstellung - Google Patents
Brustprothese und verfahren zu deren herstellungInfo
- Publication number
- EP3843669A1 EP3843669A1 EP19782468.3A EP19782468A EP3843669A1 EP 3843669 A1 EP3843669 A1 EP 3843669A1 EP 19782468 A EP19782468 A EP 19782468A EP 3843669 A1 EP3843669 A1 EP 3843669A1
- Authority
- EP
- European Patent Office
- Prior art keywords
- prosthesis
- breast
- printing process
- produced
- fluid material
- 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- Withdrawn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
- 210000000481 breast Anatomy 0.000 title claims abstract description 90
- 238000000034 method Methods 0.000 title claims abstract description 63
- 238000004519 manufacturing process Methods 0.000 title claims abstract description 31
- 239000000463 material Substances 0.000 claims abstract description 66
- 238000010146 3D printing Methods 0.000 claims abstract description 40
- 230000002980 postoperative effect Effects 0.000 claims abstract description 29
- 231100000241 scar Toxicity 0.000 claims abstract description 20
- 238000003384 imaging method Methods 0.000 claims abstract description 6
- 239000012530 fluid Substances 0.000 claims description 51
- 229920001296 polysiloxane Polymers 0.000 claims description 23
- 229920001971 elastomer Polymers 0.000 claims description 22
- 239000000806 elastomer Substances 0.000 claims description 22
- 239000003054 catalyst Substances 0.000 claims description 21
- 239000007788 liquid Substances 0.000 claims description 14
- 239000004971 Cross linker Substances 0.000 claims description 13
- 238000002266 amputation Methods 0.000 claims description 11
- 239000007787 solid Substances 0.000 claims description 10
- 238000005338 heat storage Methods 0.000 claims description 8
- 239000004033 plastic Substances 0.000 claims description 8
- 229920003023 plastic Polymers 0.000 claims description 8
- 230000000704 physical effect Effects 0.000 claims description 7
- 230000000007 visual effect Effects 0.000 claims description 7
- 238000007639 printing Methods 0.000 claims description 6
- 230000006978 adaptation Effects 0.000 claims description 5
- 238000004132 cross linking Methods 0.000 claims description 5
- 238000004073 vulcanization Methods 0.000 claims description 5
- 210000004883 areola Anatomy 0.000 claims description 4
- 239000000017 hydrogel Substances 0.000 claims description 4
- 239000000203 mixture Substances 0.000 claims description 4
- 229920002635 polyurethane Polymers 0.000 claims description 4
- 239000004814 polyurethane Substances 0.000 claims description 4
- 230000001070 adhesive effect Effects 0.000 claims description 3
- 239000003086 colorant Substances 0.000 claims description 3
- 238000010276 construction Methods 0.000 claims description 3
- 238000009607 mammography Methods 0.000 claims description 3
- 210000002445 nipple Anatomy 0.000 claims description 3
- 230000000845 anti-microbial effect Effects 0.000 claims description 2
- 210000000038 chest Anatomy 0.000 claims description 2
- 238000004040 coloring Methods 0.000 claims description 2
- 239000008240 homogeneous mixture Substances 0.000 claims description 2
- 239000000049 pigment Substances 0.000 claims description 2
- 230000037204 skin physiology Effects 0.000 claims description 2
- 239000011232 storage material Substances 0.000 claims description 2
- 230000009974 thixotropic effect Effects 0.000 claims description 2
- 230000000694 effects Effects 0.000 claims 1
- 239000012567 medical material Substances 0.000 claims 1
- 238000005457 optimization Methods 0.000 claims 1
- 239000000654 additive Substances 0.000 abstract description 7
- 230000000996 additive effect Effects 0.000 abstract description 5
- 238000002059 diagnostic imaging Methods 0.000 abstract description 3
- 229920002457 flexible plastic Polymers 0.000 abstract 1
- 238000004088 simulation Methods 0.000 abstract 1
- 239000000499 gel Substances 0.000 description 9
- 239000003795 chemical substances by application Substances 0.000 description 7
- 238000006243 chemical reaction Methods 0.000 description 6
- BASFCYQUMIYNBI-UHFFFAOYSA-N platinum Chemical compound [Pt] BASFCYQUMIYNBI-UHFFFAOYSA-N 0.000 description 6
- 239000004848 polyfunctional curative Substances 0.000 description 6
- 229920002379 silicone rubber Polymers 0.000 description 6
- 239000000126 substance Substances 0.000 description 5
- 239000004593 Epoxy Substances 0.000 description 3
- 229910052697 platinum Inorganic materials 0.000 description 3
- 239000004945 silicone rubber Substances 0.000 description 3
- 238000007711 solidification Methods 0.000 description 3
- 230000008023 solidification Effects 0.000 description 3
- 206010006187 Breast cancer Diseases 0.000 description 2
- 208000026310 Breast neoplasm Diseases 0.000 description 2
- 238000005266 casting Methods 0.000 description 2
- 239000003431 cross linking reagent Substances 0.000 description 2
- 238000005507 spraying Methods 0.000 description 2
- 238000009423 ventilation Methods 0.000 description 2
- 208000008035 Back Pain Diseases 0.000 description 1
- 239000004944 Liquid Silicone Rubber Substances 0.000 description 1
- 206010028391 Musculoskeletal Pain Diseases 0.000 description 1
- 206010028836 Neck pain Diseases 0.000 description 1
- 206010034133 Pathogen resistance Diseases 0.000 description 1
- 208000007613 Shoulder Pain Diseases 0.000 description 1
- 239000000853 adhesive Substances 0.000 description 1
- 230000015572 biosynthetic process Effects 0.000 description 1
- 230000003197 catalytic effect Effects 0.000 description 1
- 239000012295 chemical reaction liquid Substances 0.000 description 1
- 150000001875 compounds Chemical class 0.000 description 1
- 238000004590 computer program Methods 0.000 description 1
- 238000001816 cooling Methods 0.000 description 1
- 238000000151 deposition Methods 0.000 description 1
- 239000013013 elastic material Substances 0.000 description 1
- 239000003822 epoxy resin Substances 0.000 description 1
- 238000001125 extrusion Methods 0.000 description 1
- 239000007943 implant Substances 0.000 description 1
- 239000011344 liquid material Substances 0.000 description 1
- 230000007721 medicinal effect Effects 0.000 description 1
- 238000010309 melting process Methods 0.000 description 1
- 229910052751 metal Inorganic materials 0.000 description 1
- 239000002184 metal Substances 0.000 description 1
- 150000002739 metals Chemical class 0.000 description 1
- 238000003801 milling Methods 0.000 description 1
- 238000000465 moulding Methods 0.000 description 1
- 239000002985 plastic film Substances 0.000 description 1
- 229920006255 plastic film Polymers 0.000 description 1
- 229920000647 polyepoxide Polymers 0.000 description 1
- 239000002861 polymer material Substances 0.000 description 1
- 230000001144 postural effect Effects 0.000 description 1
- 239000000843 powder Substances 0.000 description 1
- 230000008934 psychosocial wellbeing Effects 0.000 description 1
- 238000002310 reflectometry Methods 0.000 description 1
- 230000001105 regulatory effect Effects 0.000 description 1
- 229910052703 rhodium Inorganic materials 0.000 description 1
- 239000010948 rhodium Substances 0.000 description 1
- MHOVAHRLVXNVSD-UHFFFAOYSA-N rhodium atom Chemical compound [Rh] MHOVAHRLVXNVSD-UHFFFAOYSA-N 0.000 description 1
- 229920002631 room-temperature vulcanizate silicone Polymers 0.000 description 1
- 229920002545 silicone oil Polymers 0.000 description 1
- 239000000758 substrate Substances 0.000 description 1
- 239000000057 synthetic resin Substances 0.000 description 1
- 229920003002 synthetic resin Polymers 0.000 description 1
- 239000002562 thickening agent Substances 0.000 description 1
- 238000007514 turning Methods 0.000 description 1
- 239000002699 waste material Substances 0.000 description 1
Classifications
-
- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61F—FILTERS IMPLANTABLE INTO BLOOD VESSELS; PROSTHESES; DEVICES PROVIDING PATENCY TO, OR PREVENTING COLLAPSING OF, TUBULAR STRUCTURES OF THE BODY, e.g. STENTS; ORTHOPAEDIC, NURSING OR CONTRACEPTIVE DEVICES; FOMENTATION; TREATMENT OR PROTECTION OF EYES OR EARS; BANDAGES, DRESSINGS OR ABSORBENT PADS; FIRST-AID KITS
- A61F2/00—Filters implantable into blood vessels; Prostheses, i.e. artificial substitutes or replacements for parts of the body; Appliances for connecting them with the body; Devices providing patency to, or preventing collapsing of, tubular structures of the body, e.g. stents
- A61F2/50—Prostheses not implantable in the body
- A61F2/52—Mammary prostheses
-
- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61F—FILTERS IMPLANTABLE INTO BLOOD VESSELS; PROSTHESES; DEVICES PROVIDING PATENCY TO, OR PREVENTING COLLAPSING OF, TUBULAR STRUCTURES OF THE BODY, e.g. STENTS; ORTHOPAEDIC, NURSING OR CONTRACEPTIVE DEVICES; FOMENTATION; TREATMENT OR PROTECTION OF EYES OR EARS; BANDAGES, DRESSINGS OR ABSORBENT PADS; FIRST-AID KITS
- A61F2/00—Filters implantable into blood vessels; Prostheses, i.e. artificial substitutes or replacements for parts of the body; Appliances for connecting them with the body; Devices providing patency to, or preventing collapsing of, tubular structures of the body, e.g. stents
- A61F2/50—Prostheses not implantable in the body
- A61F2/5044—Designing or manufacturing processes
- A61F2/5046—Designing or manufacturing processes for designing or making customized prostheses, e.g. using templates, finite-element analysis or CAD-CAM techniques
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
- B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
- B29C64/00—Additive manufacturing, i.e. manufacturing of three-dimensional [3D] objects by additive deposition, additive agglomeration or additive layering, e.g. by 3D printing, stereolithography or selective laser sintering
- B29C64/10—Processes of additive manufacturing
- B29C64/106—Processes of additive manufacturing using only liquids or viscous materials, e.g. depositing a continuous bead of viscous material
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
- B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
- B29C64/00—Additive manufacturing, i.e. manufacturing of three-dimensional [3D] objects by additive deposition, additive agglomeration or additive layering, e.g. by 3D printing, stereolithography or selective laser sintering
- B29C64/20—Apparatus for additive manufacturing; Details thereof or accessories therefor
- B29C64/205—Means for applying layers
- B29C64/209—Heads; Nozzles
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B33—ADDITIVE MANUFACTURING TECHNOLOGY
- B33Y—ADDITIVE MANUFACTURING, i.e. MANUFACTURING OF THREE-DIMENSIONAL [3-D] OBJECTS BY ADDITIVE DEPOSITION, ADDITIVE AGGLOMERATION OR ADDITIVE LAYERING, e.g. BY 3-D PRINTING, STEREOLITHOGRAPHY OR SELECTIVE LASER SINTERING
- B33Y10/00—Processes of additive manufacturing
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B33—ADDITIVE MANUFACTURING TECHNOLOGY
- B33Y—ADDITIVE MANUFACTURING, i.e. MANUFACTURING OF THREE-DIMENSIONAL [3-D] OBJECTS BY ADDITIVE DEPOSITION, ADDITIVE AGGLOMERATION OR ADDITIVE LAYERING, e.g. BY 3-D PRINTING, STEREOLITHOGRAPHY OR SELECTIVE LASER SINTERING
- B33Y80/00—Products made by additive manufacturing
-
- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61F—FILTERS IMPLANTABLE INTO BLOOD VESSELS; PROSTHESES; DEVICES PROVIDING PATENCY TO, OR PREVENTING COLLAPSING OF, TUBULAR STRUCTURES OF THE BODY, e.g. STENTS; ORTHOPAEDIC, NURSING OR CONTRACEPTIVE DEVICES; FOMENTATION; TREATMENT OR PROTECTION OF EYES OR EARS; BANDAGES, DRESSINGS OR ABSORBENT PADS; FIRST-AID KITS
- A61F2/00—Filters implantable into blood vessels; Prostheses, i.e. artificial substitutes or replacements for parts of the body; Appliances for connecting them with the body; Devices providing patency to, or preventing collapsing of, tubular structures of the body, e.g. stents
- A61F2/50—Prostheses not implantable in the body
- A61F2/5044—Designing or manufacturing processes
- A61F2/5046—Designing or manufacturing processes for designing or making customized prostheses, e.g. using templates, finite-element analysis or CAD-CAM techniques
- A61F2002/5047—Designing or manufacturing processes for designing or making customized prostheses, e.g. using templates, finite-element analysis or CAD-CAM techniques using mathematical models
- A61F2002/5049—Computer aided shaping, e.g. rapid prototyping
Definitions
- the invention relates to a soft-elastic breast prosthesis that corresponds to the preoperative natural breast shape, size and strength of the wearer, adapted to the post-operative scar tissue facing the body
- breast prostheses are developed for women whose breasts had to be amputated on one or both sides due to breast cancer by a mastectomy or lumpectomy, in whole or in part.
- the natural implementation of postoperative breast prosthesis has a decisive influence on self-confidence
- breast prostheses are therefore preferably also designed as lightweight prostheses.
- Various hollow or air-filled lightweight prostheses are known in the prior art, for example produced by completely filling a prosthesis shape with silicone rubber vulcanizing at room temperature. The uncured
- Silicone rubber is pressed out of the molded part, resulting in a hollow prosthesis. This method leads to considerable cost-intensive material waste.
- the middle pocket is defined with an opening, so that there is a pocket with an opening between the first chamber and the third chamber.
- the opening and the pocket allow the user to stuff a material into the pocket through the opening.
- the silicone gel must be cured until it has a firmness and feel that maintains the shape of a natural breast with regular use.
- the essential requirements for the prosthesis are its natural size, shape and coloring, its weight mass corresponding to the contralateral breast, its natural vibration behavior and the structure, the air balance and the adaptation to the postoperative scar tissue to match the preoperative condition as individually as possible.
- breast prosthesis and / or soft-elastic object and / or soft-elastic component and / or soft-elastic solid also include other terms commonly used in language such as prosthesis, partial prosthesis or epithesis, since there are no uniformly defined terms due to the overlap of medical and technical terms.
- the invention relates to a removable, asymmetrically manufactured breast prosthesis produced in a 3D printing process, comprising an individually the shape, size, weight, vibration behavior and strength of the
- Pre-operative female breast corresponding body made of one or more soft-elastic plastic layer (s), which on the skin-facing side of the prosthesis shows the post-operative sensitive scar tissue soft-elastic layer (s) with individually adapted shape and / or properties.
- the soft-elastic layers consist of elastomers, preferably one and / or more crosslinking silicones and / or
- Polyurethanes and / or hydrogels characterized in that they are produced in the 3D printing process.
- the shape and size of the breast prosthesis or partial prosthesis are reflected in the preoperative natural shape and size of the breast that they from the processed data of the preoperative and postoperative imaging methods, such as. B. mammography, sonography, CT, MRI, PET, and / or scanning, are produced in the 3D printing process.
- the weight of the 3D-printed breast prosthesis corresponds to the surgically removed breast tissue and / or that of the contralateral breast and / or preferably the weight prescribed by the treating physician.
- the weight of the breast prosthesis and / or individual layers of the breast prosthesis can be determined by differences in the density of the 3D-printed elastomers and / or by 3D printing of one or more inner cavities by specifying the wall thickness or inner and outer wall lines definable volumes can be designed variably.
- the stability of the cavities can be made variable by means of 3D-printed inner structures, preferably in the form of a honeycomb, whereby the external strength and feel can also be made variable.
- the vibration behavior of the breast prosthesis and / or individual layers of the breast prosthesis can be determined by the viscosity of the 3D-printed elastomers.
- the strength and feel of the breast prosthesis and / or individual layers of the breast prosthesis can be determined by the Shore hardness of the 3D-printed elastomers.
- the 3D-printed elastomers for producing the breast prosthesis and / or individual layers of the breast prosthesis can be colored by adding pigment.
- porous structures of the breast prosthesis and / or individual layers of the breast prosthesis to optimize the skin physiology of the postoperative scar tissue such as.
- B. Air circulation, heat storage and air exchange between the breast prosthesis and body surface can be integrated into the 3D printing process.
- These porous structures also offer space for e.g. B. latent heat storage materials such as PCM material and / or antimicrobial material, furthermore other materials that can have a skin-caring, temperature-balancing and / or medicinal effect.
- the skin-facing side of the breast prosthesis and / or individual layers of the breast prosthesis for adaptation to the postoperative sensitive scar tissue and / or to the uneven tissue after a partial amputation by 3D-printed elastomers can have thixotropic properties.
- the skin-facing side of the breast prosthesis and / or individual layers of the breast prosthesis for air circulation, heat storage and for air exchange between the breast prosthesis and body surface of the postoperative sensitive scar tissue and / or the uneven tissue after a partial amputation by 3D-printed three-dimensional channels, webs and / or have nubs made of elastomers.
- the skin-facing side of the breast prosthesis and / or individual layers of the breast prosthesis for air circulation, heat storage and for air exchange between the breast prosthesis and the body surface of the postoperative sensitive scar tissue and / or the uneven tissue after a partial amputation have a 3D-printed concave back.
- the breast prosthesis and / or individual layers of the breast prosthesis achieved by changing z. B. in density, viscosity, porosity, Shore hardness, color and structural viscosity during 3D printing a variability corresponding to the natural breast, so that for example the nipple and areola can be 3D printed darker and "harder” than that
- the invention also relates to a method for producing the
- a 3D printer is a machine for the production of three-dimensional workpieces, which are computer-controlled built up in layers from one or more liquid, plastic or powdery materials according to predetermined dimensions and shapes.
- the printer is controlled using a computer program which
- Volume data processed that is available in digital form from scanners or medical imaging processes and can be processed further.
- Data from medical imaging processes can be used to additively produce individual prostheses, partial prostheses or epitheses using 3D printers.
- 3D printing In the production of workpieces by means of 3D printing, there is generally no need for complex work, such as, for example, in formative manufacturing processes such as casting Manufacture of molds, fittings and changing shapes. Compared to subtractive manufacturing processes such as milling or turning, 3D printing has the advantage that there is no material loss. Furthermore, it is relatively easy to manufacture workpieces that can be created due to the complex geometry such. B. with undercuts or integrated cooling channels can not be made with the conventional manufacturing processes. Most of the time, the process is also cheaper and more energy-efficient because the material is built up only once and in exactly the required size and mass.
- Typical materials for 3D printing are metals, synthetic resins and plastics, e.g. B.
- silicones, polyurethanes and hydrogels can be 3D-printed.
- a method for the additive production of a three-dimensional object, preferably from silicones, is known from WO2015059502.
- this manufacturing method of additive manufacturing according to the invention a 3D printing method, a three-dimensional soft-elastic object, according to the invention a breast prosthesis, directly from digital computer files, according to the invention DICOM files of the preoperative and postoperative imaging methods, such as, for. B. mammography, sonography, CT, MRI, PET, and / or scanning, after conversion to printable STL files, 3D printing in one operation from one and / or more cross-linked silicones and / or polyurethanes and / or hydrogels.
- a method for manufacturing a breast prosthesis comprises the following steps:
- This method relates to the 3D production in the bathroom as such that in one
- Base material made of silicone gel with a dispenser of liquid crosslinker in the form of a suitable catalyst is applied.
- the silicone gel can be cross-linked or actively cross-linked.
- the catalyst can cause controlled vulcanization of the silicone gel, which causes the liquid to harden
- Base material accelerates when the catalyst comes into contact.
- active crosslinking it is meant that the gel solidifies at a certain rate due to the formation of additional crosslinks.
- the method may include the step of varying the crosslinker while the breast prosthesis is being created to change a property thereof. Possible variations in the visual or physical properties are given above.
- the method comprises the following steps:
- the second fluid component may be a conventional liquid catalyst that is suitable for an RTV liquid silicone rubber. Such a catalyst accelerates the crosslinking process, which leads to faster solidification.
- a suitable catalyst can be a platinum or rhodium catalyst.
- the second fluid material can act or react with the first fluid material to achieve a different characteristic, such as e.g. B. hardness, flexibility, elasticity, durability, toughness, feel and the like.
- the second fluid material can add a property to the first fluid material, in particular a visual property such as color, color gradient or reflectivity (matt, naturally glossy, etc.).
- the first fluid material can be a base material and the second fluid material can be a crosslinker.
- the first fluid material e.g. a polymeric material, such as a silicone gel
- the second fluid material can be a crosslinker, such as a
- Catalyst which can bring about a controlled vulcanization of the first fluid material, which accelerates hardening of the fluid base material upon contact of the crosslinking agent / catalyst.
- crosslinking agent in this specification includes any substance which can act or react with a liquid base substance to form a soft-elastic solid.
- crosslinker is the so-called "hardener / hardening agent" of a two-part liquid material, for example an epoxy resin.
- a liquid catalyst to solidify a gel, especially a silicone gel.
- Base material and “hardener / hardening agent” are interchangeable, it being generally irrelevant which substance is added to the other in order to achieve the solidification.
- a fluid base material comprises a homogeneous mixture of several reactive fluid materials, each of the fluid materials in the mixture being stable or solidifying at a relatively slow rate and for reacting with a respective cross-linker that is in this bath is dispersed, is suitable to trigger or accelerate the solidification process.
- the liquid base material e.g. a polymer material such as the silicone gel can be cross-linked or actively cross-linked.
- the catalyst can bring about a controlled vulcanization of the base material, which accelerates hardening of the liquid base material when the catalyst comes into contact.
- the finished breast prosthesis may typically have a variation in visual and / or physical properties to address this To adapt the intended use.
- a variety of colors can be used.
- the finished breast prosthesis can, for example, have hard and soft areas or only have flexibility and / or elasticity at desired locations.
- the methods may include the step of delivering various hardening agents to obtain different properties of the breast prosthesis.
- various hardening agents for example, a variety of reservoirs can be provided with different hardening agents, the reservoirs in turn being digitally selected to allow the properties of the breast prosthesis to be changed during its manufacture.
- a component of uniform quality can have several colors, each color being imparted by a suitable hardener.
- Hardening agents can be colored to impart color directly to a base material.
- a component can have hard and soft areas defined by hardening agents supplied from respective reservoirs.
- a hardening agent can impart both visible and physical properties to the base material.
- the methods and 3D printing devices of the invention enable the manufacture of a single component or multiple components in silicone elastomers of multiple hardness and qualities without the need for the use of molding or casting techniques.
- different types of silicones can be used in the same additive building process by means of the invention.
- the methods and the 3D printing manufacturing devices allow the manufacturing of components by catalytic curing of platinum silicone in a controlled manner.
- first and second fluid components are of a single type and the quality of the finished component is determined by varying the properties of one or the other of these components.
- one of the first and second fluid components may comprise a combined fluid that can react with different fluids of the other of the first and second fluid components.
- two fluid reactions that are independently stable and thus generally incompatible, for example a silicone / catalyst reaction and a two component epoxy reaction that includes a base and a hardener.
- a silicone / catalyst reaction and a two component epoxy reaction that includes a base and a hardener.
- a two component epoxy reaction that includes a base and a hardener.
- Components e.g. silicone and epoxy base
- a first fluid component e.g. silicone and epoxy base
- one or the other component causes the combined components to solidify, which are arranged in such a way that they are mixed homogeneously.
- the sequential addition of the other components can be used to achieve significantly different physical properties in the finished component.
- This aspect of the invention is not limited to two types of reaction liquids, but could include three or more such liquids, as long as one component associated with each reaction is compatible and stable in a mixture and the other component only reacts with its partner component.
- a material that has properties of one or more of color, gradient, latent heat, odor, and
- Such materials can be in solid or liquid form, for example as a fine powder or as a solution.
- a bank of additives which consists of a plurality of individual reservoirs of substances.
- the appropriate additive is selected and delivered to the dispensing nozzle according to the instructions contained in the digital record.
- Such additives can be added to various types of catalysts or hardeners to achieve the desired properties of the component.
- the method of the invention can be used to add material to a substrate disposed in the bath, such as to form a solid RTV silicone material around a preform around another material.
- a silicone material could be added to the prosthesis or a rigid implant for a human body or an electrical component.
- FIG. 2 shows a perspective view of a breast prosthesis according to the invention
- Figure 1 denotes the preoperative (3) and postoperative (4) imaging procedures carried out according to the current state of medical diagnostics, which preoperatively reflect the natural breast size and shape of the wearer (1) and
- the data is saved in the patient's medical record in DICOM data format and is available to the patient at any time.
- the named DICOM files can be made available in an STL interface by data processing (5) in STL format for production by means of 3D printing (6) in one operation.
- This is e.g. B. possible with free (open source) software.
- the breast prosthesis, partial prosthesis and / or epithesis (7) is available as an exact replica of the preoperative breast of the patient in shape and size.
- FIG. 2 shows an example of an embodiment of a 3D-printed soft-elastic breast prosthesis (1) with a nipple (Mamille, 2) made from an inventive printed less soft-elastic silicone than the areola surrounding it (Areola, 3) and the breast body (4), which in terms of feel, shape, size and color according to the invention correspond to the natural preoperative breast of the patient, the breast body in its horizontal and / or vertical course in its elasticity can be printed continuously or increasingly, depending on the feel and the
- Weight adjustment, the chest (4) inside the inside (7) during the 3D printing process can be printed hollow, with lighter silicone and / or partially solid and / or with a structure corresponding to the prior art, e.g. B. honeycomb structure (6) can be printed, which also serves the task of adequate ventilation of the postoperative scar tissue.
- the rear side (5) can also be printed not only from adhesive silicone for adherence and adaptation to the shape of the sensitive postoperative scar tissue, but also from a mixture with porous silicone for ventilation.
- the delimited lines are used only for anatomical representation, the production by the 3D printing process according to the invention proceeds seamlessly in one operation according to the postoperative breast shape of the patient.
- FIG 3 shows schematically a method and an apparatus for producing a breast prosthesis by means of 3D printing comprising a bath (1) filled with a first fluid, for example a silicone oil (2), which a crosslinker (3) and z. B. a thickener is added.
- a first fluid for example a silicone oil (2), which a crosslinker (3) and z. B. a thickener is added.
- This is a syringe (4) with a second fluid component (5) z. B. a platinum catalyst is added.
- This construction is provided with a pressure system (6), connected to a pneumatic control (7) and a compressor (8).
- a nozzle (10) is connected to the valve (9). The system is pressurized, whereby the catalyst (5) is pressed precisely into the bath via the valve (9) and the nozzle (10).
- a computer (12) with an STL interface FIGS.
- 1, 5) contains the digital recording of the pre- and postoperative DICOM files in order to control the respective position (13) of the nozzle (10) and the printing system (6).
- the nozzle (10) is moved in the bath (1) and the fluid components (2, 3, 5,) react to a soft-elastic solid (1 1) to produce a 3D part (14).
- the nozzle arrangement is raised (15) and the soft-elastically hardened prosthesis (14) is removed from the bath.
Landscapes
- Engineering & Computer Science (AREA)
- Health & Medical Sciences (AREA)
- Materials Engineering (AREA)
- Chemical & Material Sciences (AREA)
- Manufacturing & Machinery (AREA)
- Biomedical Technology (AREA)
- Veterinary Medicine (AREA)
- Vascular Medicine (AREA)
- Life Sciences & Earth Sciences (AREA)
- Animal Behavior & Ethology (AREA)
- General Health & Medical Sciences (AREA)
- Public Health (AREA)
- Heart & Thoracic Surgery (AREA)
- Transplantation (AREA)
- Oral & Maxillofacial Surgery (AREA)
- Cardiology (AREA)
- Physics & Mathematics (AREA)
- Mechanical Engineering (AREA)
- Optics & Photonics (AREA)
- Prostheses (AREA)
Abstract
Description
Claims
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DE102018006839.1A DE102018006839A1 (de) | 2018-08-29 | 2018-08-29 | Brustprothese und Verfahren zu deren Herstellung |
PCT/DE2019/000229 WO2020043228A1 (de) | 2018-08-29 | 2019-08-28 | Brustprothese und verfahren zu deren herstellung |
Publications (1)
Publication Number | Publication Date |
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EP3843669A1 true EP3843669A1 (de) | 2021-07-07 |
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EP19782468.3A Withdrawn EP3843669A1 (de) | 2018-08-29 | 2019-08-28 | Brustprothese und verfahren zu deren herstellung |
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EP (1) | EP3843669A1 (de) |
DE (1) | DE102018006839A1 (de) |
WO (1) | WO2020043228A1 (de) |
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CN112172125B (zh) * | 2020-09-29 | 2024-04-30 | 上海市浦东医院(复旦大学附属浦东医院) | 一种3d乳房打印装置 |
CN114012943A (zh) * | 2021-10-21 | 2022-02-08 | 上海海洪医疗科技发展有限公司 | 一种基于mri影像数据定制个性化硅胶假体模具的方法 |
FR3133742A1 (fr) | 2022-03-24 | 2023-09-29 | Atelier J'm | Procédé de production d’une prothèse anatomique par conception tridimensionnelle assistée par ordinateur |
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US8417487B2 (en) * | 2007-10-05 | 2013-04-09 | 3D Systems, Inc. | Replaceable fairing for prosthetic limb or brace |
GB201318898D0 (en) | 2013-10-25 | 2013-12-11 | Fripp Design Ltd | Method and apparatus for additive manufacturing |
WO2016022729A1 (en) * | 2014-08-05 | 2016-02-11 | 3Db Resources Llc | 3d-printed unibody mesh structures for breast prosthesis and methods of making same |
CN104783924B (zh) * | 2015-04-24 | 2017-01-18 | 杭州捷诺飞生物科技有限公司 | 一种基于三维打印技术的乳房假体制造方法 |
CN106073943B (zh) * | 2016-07-19 | 2019-06-04 | 青岛三帝生物科技有限公司 | 基于3d打印的防渗漏乳房假体成型方法和乳房假体 |
CN106182838A (zh) * | 2016-07-25 | 2016-12-07 | 青岛三帝生物科技有限公司 | 基于3d打印的防移位乳房假体成型方法和乳房假体 |
-
2018
- 2018-08-29 DE DE102018006839.1A patent/DE102018006839A1/de not_active Withdrawn
-
2019
- 2019-08-28 WO PCT/DE2019/000229 patent/WO2020043228A1/de unknown
- 2019-08-28 EP EP19782468.3A patent/EP3843669A1/de not_active Withdrawn
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DE102018006839A1 (de) | 2020-03-05 |
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