EP4374276A1 - Computerimplementiertes verfahren und vorrichtung zur geometrischen definition eines an eine organismuseinheit angepassten bauteils - Google Patents
Computerimplementiertes verfahren und vorrichtung zur geometrischen definition eines an eine organismuseinheit angepassten bauteilsInfo
- Publication number
- EP4374276A1 EP4374276A1 EP22754292.5A EP22754292A EP4374276A1 EP 4374276 A1 EP4374276 A1 EP 4374276A1 EP 22754292 A EP22754292 A EP 22754292A EP 4374276 A1 EP4374276 A1 EP 4374276A1
- Authority
- EP
- European Patent Office
- Prior art keywords
- component
- computer
- implemented method
- geometry
- adaptation
- 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
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- G—PHYSICS
- G06—COMPUTING OR CALCULATING; COUNTING
- G06F—ELECTRIC DIGITAL DATA PROCESSING
- G06F30/00—Computer-aided design [CAD]
- G06F30/10—Geometric CAD
-
- G—PHYSICS
- G16—INFORMATION AND COMMUNICATION TECHNOLOGY [ICT] SPECIALLY ADAPTED FOR SPECIFIC APPLICATION FIELDS
- G16H—HEALTHCARE INFORMATICS, i.e. INFORMATION AND COMMUNICATION TECHNOLOGY [ICT] SPECIALLY ADAPTED FOR THE HANDLING OR PROCESSING OF MEDICAL OR HEALTHCARE DATA
- G16H50/00—ICT specially adapted for medical diagnosis, medical simulation or medical data mining; ICT specially adapted for detecting, monitoring or modelling epidemics or pandemics
- G16H50/50—ICT specially adapted for medical diagnosis, medical simulation or medical data mining; ICT specially adapted for detecting, monitoring or modelling epidemics or pandemics for simulation or modelling of medical disorders
-
- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61C—DENTISTRY; APPARATUS OR METHODS FOR ORAL OR DENTAL HYGIENE
- A61C13/00—Dental prostheses; Making same
- A61C13/0003—Making bridge-work, inlays, implants or the like
- A61C13/0004—Computer-assisted sizing or machining of dental prostheses
-
- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61C—DENTISTRY; APPARATUS OR METHODS FOR ORAL OR DENTAL HYGIENE
- A61C19/00—Dental auxiliary appliances
- A61C19/04—Measuring instruments specially adapted for dentistry
-
- 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
- A61F2/02—Prostheses implantable into the body
- A61F2/30—Joints
- A61F2/3094—Designing or manufacturing processes
- A61F2/30942—Designing or manufacturing processes for designing or making customized prostheses, e.g. using templates, CT or NMR scans, finite-element analysis or CAD-CAM techniques
-
- 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
- A61F2/02—Prostheses implantable into the body
- A61F2/30—Joints
- A61F2/46—Special tools for implanting artificial joints
-
- 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
- A61F2/76—Means for assembling, fitting or testing prostheses, e.g. for measuring or balancing, e.g. alignment means
-
- G—PHYSICS
- G06—COMPUTING OR CALCULATING; COUNTING
- G06F—ELECTRIC DIGITAL DATA PROCESSING
- G06F30/00—Computer-aided design [CAD]
- G06F30/20—Design optimisation, verification or simulation
- G06F30/27—Design optimisation, verification or simulation using machine learning, e.g. artificial intelligence, neural networks, support vector machines [SVM] or training a model
-
- G—PHYSICS
- G16—INFORMATION AND COMMUNICATION TECHNOLOGY [ICT] SPECIALLY ADAPTED FOR SPECIFIC APPLICATION FIELDS
- G16H—HEALTHCARE INFORMATICS, i.e. INFORMATION AND COMMUNICATION TECHNOLOGY [ICT] SPECIALLY ADAPTED FOR THE HANDLING OR PROCESSING OF MEDICAL OR HEALTHCARE DATA
- G16H20/00—ICT specially adapted for therapies or health-improving plans, e.g. for handling prescriptions, for steering therapy or for monitoring patient compliance
- G16H20/40—ICT specially adapted for therapies or health-improving plans, e.g. for handling prescriptions, for steering therapy or for monitoring patient compliance relating to mechanical, radiation or invasive therapies, e.g. surgery, laser therapy, dialysis or acupuncture
-
- G—PHYSICS
- G16—INFORMATION AND COMMUNICATION TECHNOLOGY [ICT] SPECIALLY ADAPTED FOR SPECIFIC APPLICATION FIELDS
- G16H—HEALTHCARE INFORMATICS, i.e. INFORMATION AND COMMUNICATION TECHNOLOGY [ICT] SPECIALLY ADAPTED FOR THE HANDLING OR PROCESSING OF MEDICAL OR HEALTHCARE DATA
- G16H30/00—ICT specially adapted for the handling or processing of medical images
- G16H30/40—ICT specially adapted for the handling or processing of medical images for processing medical images, e.g. editing
-
- 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
- A61F2/02—Prostheses implantable into the body
- A61F2/30—Joints
- A61F2/32—Joints for the hip
-
- 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
- A61F2/02—Prostheses implantable into the body
- A61F2/30—Joints
- A61F2/42—Joints for wrists or ankles; for hands, e.g. fingers; for feet, e.g. toes
- A61F2/4241—Joints for wrists or ankles; for hands, e.g. fingers; for feet, e.g. toes for hands, e.g. fingers
-
- 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
- A61F2/02—Prostheses implantable into the body
- A61F2/30—Joints
- A61F2/30767—Special external or bone-contacting surface, e.g. coating for improving bone ingrowth
- A61F2/30771—Special external or bone-contacting surface, e.g. coating for improving bone ingrowth applied in original prostheses, e.g. holes or grooves
- A61F2002/30878—Special external or bone-contacting surface, e.g. coating for improving bone ingrowth applied in original prostheses, e.g. holes or grooves with non-sharp protrusions, for instance contacting the bone for anchoring, e.g. keels, pegs, pins, posts, shanks, stems, struts
-
- 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
- A61F2/02—Prostheses implantable into the body
- A61F2/30—Joints
- A61F2/3094—Designing or manufacturing processes
- A61F2/30942—Designing or manufacturing processes for designing or making customized prostheses, e.g. using templates, CT or NMR scans, finite-element analysis or CAD-CAM techniques
- A61F2002/30948—Designing or manufacturing processes for designing or making customized prostheses, e.g. using templates, CT or NMR scans, finite-element analysis or CAD-CAM techniques using computerized tomography, i.e. CT scans
-
- 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
- A61F2/02—Prostheses implantable into the body
- A61F2/30—Joints
- A61F2/3094—Designing or manufacturing processes
- A61F2002/30985—Designing or manufacturing processes using three dimensional printing [3DP]
-
- 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
- A61F2/02—Prostheses implantable into the body
- A61F2/30—Joints
- A61F2/42—Joints for wrists or ankles; for hands, e.g. fingers; for feet, e.g. toes
- A61F2/4241—Joints for wrists or ankles; for hands, e.g. fingers; for feet, e.g. toes for hands, e.g. fingers
- A61F2002/4243—Joints for wrists or ankles; for hands, e.g. fingers; for feet, e.g. toes for hands, e.g. fingers for interphalangeal joints, i.e. IP joints
-
- 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
- A61F2/02—Prostheses implantable into the body
- A61F2/30—Joints
- A61F2/46—Special tools for implanting artificial joints
- A61F2002/4632—Special tools for implanting artificial joints using computer-controlled surgery, e.g. robotic surgery
- A61F2002/4633—Special tools for implanting artificial joints using computer-controlled surgery, e.g. robotic surgery for selection of endoprosthetic joints or for pre-operative planning
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- G—PHYSICS
- G06—COMPUTING OR CALCULATING; COUNTING
- G06F—ELECTRIC DIGITAL DATA PROCESSING
- G06F2111/00—Details relating to CAD techniques
- G06F2111/16—Customisation or personalisation
Definitions
- the invention relates to a computer-implemented method for the geometric definition of a component adapted to an organism unit, a computer program product, a computer-readable data carrier and a device for the geometric definition of a component adapted to an organism unit.
- Components for organism units usually have a geometry that is to be defined individually for each organism with which the component is intended to interact. For this purpose, the geometry of the organism unit, for example a hip joint or a finger bone, is usually reproduced.
- components for organism units are provided in standard sizes, such as shoes, glasses or prostheses, which usually do not meet all individual requirements. Such components are currently defined geometrically essentially manually or are individualized only to a limited extent. A limited customization of a component can be done, for example, by a Boolean subtraction of a 3D scan from a predefined product.
- Components for healing or reducing skull defects can be created using generative AI models, for example.
- DE 10 2012 025 431 A1 discloses a method for detecting surface deformations of body surfaces in order to provide orthoses for body parts that are adapted to different load conditions.
- the object is achieved by a computer-implemented method for the geometric definition of a component adapted to an organism unit, comprising the steps: determining at least one adaptation variable by evaluating an image of the organism unit, the at least one adaptation variable being based on a geometric property of the organism unit based and defining a component geometry of the component based on a component base geometry adapted with the at least one adaptation variable.
- the component geometry is adapted to the organism unit.
- the component can be provided, for example, to replace or support the organism unit. It is particularly preferred that the component is a body replacement part, in particular an implant or a prosthesis. Furthermore, the body replacement piece can be an orthosis or an exoskeleton.
- the component can be a shoe, in particular with a medical purpose, or glasses, in particular electronic glasses.
- the component can generally be a component close to, connected to, or close to the body and/or a component connected to the body, which is adapted to the organism unit that is operatively connected to the component.
- the invention is based, inter alia, on the knowledge that a component geometry can advantageously be defined with a two-stage computer-implemented method. Furthermore, the invention is based on the knowledge that, on the basis of a predefined component base geometry, with at least one adaptation variable, preferably two or more Adaptation sizes, is adapted to the organism unit, a precise definition of the component geometry is possible with little effort. Furthermore, the component geometry defined in this way is comprehensible for a user of the method, so that the disadvantage of geometries generated entirely on the basis of artificial intelligence is avoided or reduced.
- the component is an implant and the component geometry is an implant geometry.
- An implant manufactured on the basis of such an implant geometry also leads to improved ingrowth of the bone and to a longer product life. This in turn leads to the avoidance of cost-intensive and risky follow-up operations. This generally creates additional product value.
- the automation reduces costs and avoids human errors, so that improved reproducibility of the results is possible.
- the computer-implemented method also has the technical effect that a localization of the individual, characteristic points of the organism unit, namely by determining the at least one adaptation variable, and the design generation with explicit formulation of the solution space, namely by defining the component geometry, are largely separated. In this way, specific requirements, norms and standards can be taken into account or complied with.
- the behavior of the definition of the component geometry is comprehensible and verifiable. This is in contrast to those approaches that generate a component geometry directly on the basis of an image using an AI.
- the component geometry can be further adjusted or redesigned independently of the adaptation size.
- the component is designed in particular for an organism, for example for the human body.
- the organism unit can be, for example, a bone or a joint, for example of a finger or a hip.
- the organism unit can be a head or a foot.
- the image of the organism unit is a two-dimensional and/or three-dimensional image of the organism unit or a section of the organism unit.
- the image of the organism unit can be a CT scan, for example.
- the person skilled in the art is aware of further possibilities for creating an image of the organism unit.
- the at least one adaptation variable is based on a geometric property of the organism unit.
- the at least one adaptation variable represents in particular a variable for adapting the component base geometry, so that the component geometry of the component can be adapted to the organism unit.
- the adaptation variable describes the component geometry, particularly in combination with the component base geometry.
- the geometric property can be a macro and/or micro geometric property. As explained in more detail below, the geometric property can be a length, a cross-sectional geometry or a free-form surface definition, for example.
- the adaptation variable is a variable with which a geometric property of the organism unit can be described.
- the component geometry is defined based on the at least one adaptation variable aannggeeppaasssstteenn component base geometry.
- the component base geometry can be, for example, a predefined component base geometry for the organism unit.
- the component base geometry can depict a finger joint geometry, a prosthesis geometry, an exoskeleton geometry or a shoe geometry.
- the component base geometry is designed and provided in particular in such a way that it can be adapted using the at least one adaptation variable.
- the component base geometry can be provided as a parameterizable starting model.
- the component base geometry can also be understood as the starting geometry that is individually adapted to the relevant Organism unit is customizable. Since, for example, a human finger joint has basically the same structure, it can be described with the component base geometry, so that in the
- a preferred embodiment variant of the computer-implemented method is characterized in that the basic component geometry is defined by at least one adaptation parameter, the adaptation parameter for defining the component geometry being adapted by means of the adaptation variable.
- the adaptation parameter can, for example, relate to an extension from a distal end to a proximal end. This extension between the two ends is adjusted by means of the adaptation size when defining the component geometry.
- the adaptation size can relate to the aforementioned extension and the adaptation size is based on the geometric property that this extension is 25 mm. It is thus made possible in a particularly simple manner for the basic component geometry to be adjusted accordingly by means of the at least one adaptation variable, so that a suitable component geometry is defined.
- a further preferred development of the computer-implemented method is characterized in that the at least one adaptation variable is based on a dimension and/or a position and/or location of the geometric property.
- a dimension can be, for example, the aforementioned extent between a distal end and a proximal end.
- a position of the geometric property can be the position of a cross section, for example.
- the at least one adaptation variable can be determined, for example, using a localization algorithm.
- the at least one adaptation variable can also be based on two or more dimensions, for example two or three spatial directions.
- the position and location of the geometric property can be determined relative to a reference point, for example.
- the step of defining the component geometry further comprises generating a directed graph based on the at least one adaptation variable.
- the method may include the step of: defining a component base geometry by generating a directed graph.
- the topology can be expressed in terms of an acyclic directed simple graph.
- the directed graph comprises a set of nodes, also referred to as vertices, and a set of ordered pairs of nodes that are connected to one another by edges.
- a three-dimensional geometry can be mapped with a directed graph, so that the component base geometry and/or the component geometry can advantageously be defined with the directed graph.
- a further preferred development of the computer-implemented method provides that the geometric property of the organism unit is a one-, two- and/or multi-dimensional property.
- a one-dimensional property can be, for example, an axis, a length, a dimension orthogonal to the axis and/or length, or an insertion position of a muscle, ligament, or tendon.
- the attachment position can also be described in two or more dimensions.
- a two-dimensional property is, for example, a cross-sectional geometry.
- a multidimensional property can be, among other things, the definition of a free-form surface.
- the image is or comprises a surface model, which was preferably obtained using computed tomography.
- the image can be obtained via statistical shape models.
- the image can be obtained by deriving it from two-dimensional images, such as x-ray images.
- a further preferred development of the computer-implemented method includes the step: generating a digital component model based on the component geometry.
- the component model can, for example, serve as the basis for the additive manufacturing of the component. It is preferred that the component model is a mesh-based representation, such as an STL model.
- a further preferred embodiment of the computer-implemented method provides that the component geometry is further defined as a function of at least one functional requirement, one production requirement, one medical requirement and/or one certification requirement.
- Functional requirements can be, for example, the inclusion of further components, the inclusion of the actual component on or in an organism unit or the kinematics to other components or an organism unit.
- Manufacturing requirements can be, for example, minimum or maximum wall thicknesses. If the component is produced by means of free-form surface production, in particular in a powder bed, the length and angle of overhangs can also be taken into account. Furthermore, minimum distances between two walls and also one
- a medical technology requirement is, for example, the consideration of available tools, since, for example, drill sizes are standardized in medical technology. Furthermore, distances from a sawing surface to a point that is medically worth preserving, such as a ligament attachment, can be taken into account.
- a further preferred embodiment variant of the computer-implemented method includes the step, in particular the iterative step: simulating at least one application situation of the component. It is also preferred that the component geometry is adjusted based on simulation results of the simulation. This adjustment takes place in particular if such a need for adjustment has been detected by means of the simulation.
- a simulated application situation can be, for example, a realistic load on the component used in the organism, with strength being examined, for example. Eeiinnee such a simulation, also known as a strength simulation, enables the simulation of the load on the component in use, so that on the basis of such a
- this can relate to the strengthening or slimming of individual sections of the component, in particular in accordance with the at least one adaptation variable.
- blood flow through the component for example, can be simulated using a CFD simulation.
- a further preferred development of the computer-implemented method is characterized in that the step of determining the adaptation variable is carried out using an algorithm which is based on training data comprising at least one learning image with at least one learning adaptation variable and determines associations between at least the learning image and the learning adaptation variable.
- the algorithm determines associations between the learning image, the learning adaptation size and the image.
- the algorithm is in particular a machine learning algorithm.
- the learning image is a predetermined image, such as a CT image.
- the learning adaptation variable is an adaptation variable that corresponds to the learning image.
- the learning image represents the input(s), the learning adaptation variable(s), the output(s) of the machine learning algorithm.
- the learning adaptation variables held in the training data represent the correct function value to be learned for the respective learning image.
- the machine learning algorithm gives the predicted learning adaptation size and calculates the error to the correct learning adaptation size. With the help of this error, the associations of the learning algorithm can be adjusted. This procedure can be repeated iteratively until a sufficiently small error occurs.
- the object mentioned at the outset is achieved by a computer program product comprising instructions that are used when executing the Program by a processor cause this to perform the steps of the computer-implemented method according to one of the embodiment variants described above.
- the object mentioned at the outset is achieved by a computer-readable data carrier on which the computer program product according to the aspect mentioned above is stored.
- the object mentioned at the outset is achieved by a device for the geometric definition of a component, comprising a processor which is set up to, when executing the computer program product according to the previous aspect by the processor, the steps of the computer-implemented method according to one to carry out the embodiment variants described above.
- the device comprises a receiving unit.
- the receiving unit can be set up, for example, to receive the image of the organism unit.
- the device includes a memory on which the image and/or data representing the component geometry can be stored.
- the device can also include an output unit, by means of which the component geometry can be output.
- FIG. 1 shows a schematic view of an exemplary embodiment of a device for the geometric definition of a component
- FIG. 2 a schematic view of an exemplary embodiment of a computer-implemented method for the geometric definition of a component
- FIG. 3 shows a schematic view of an exemplary embodiment of a step for generating an image of the organism unit
- FIG. 4 a schematic view of an exemplary embodiment of two steps of the computer-implemented method.
- FIG. 5 a schematic view of an exemplary embodiment of a component.
- Figure 1 shows the device 100 for the geometric definition of a component 214.
- the device 100 comprises a processor 120 which is set up to carry out the following steps of a computer-implemented method 200 when executing a correspondingly designed computer program product, namely determining 202 a large number of adaptation variables 222 by evaluating an image 210 of an organism unit, the multiplicity of adaptation variables 222 being based on geometric properties of the organism unit and defining 204 a component geometry 218 of a component 214 based on a component base geometry adapted with the multiplicity of adaptation variables 222.
- the device 100 comprises a receiving unit 110, an output unit 130 and a memory 140.
- the receiving unit 110 can be designed, for example, to receive the image 210 of the organism unit.
- the image 210 can be obtained using a computer tomograph, for example, and can be provided to the receiving unit using suitable means.
- the image 210 can be stored at least temporarily in the memory 210, for example.
- the defined component geometry 218 can also be stored in the memory 210 .
- the output unit 130 preferably has access to the memory 210 and can characterize the component geometry 218 or data Provide component geometry, for example a manufacturing machine for additive manufacturing.
- FIG. 2 shows a computer-implemented method 200 for the geometric definition of a component 214 adapted to an organism unit 210.
- a large number of adaptation variables 222 are determined by evaluating an image of the organism unit 210.
- the adaptation variables 222 are based on characteristic geometric properties of the organism unit 210.
- the geometric properties are, for example, the length, axes, cross-sectional geometries and attachment points of tendons and muscles.
- a component geometry of the component 214 is defined based on a component base geometry adapted with the at least one adaptation variable 222.
- the component base geometry can be understood as a generalized, adaptable model of the component.
- Organism units of a healthy organism for example the human body, essentially have a similar geometry. However, the specific geometric properties of the organism units vary from organism to organism. As a result, the component base geometry must be adjusted in order to obtain the best possible component geometry. This adaptation takes place through the determined adaptation variables 222.
- step 206 at least one application situation is simulated, with a strength simulation being carried out, for example. Different application situations can be simulated with the simulation, so that the component 214 produced on the basis of the defined component geometry is tested virtually before use. Furthermore, in step 206 the component geometry is adapted based on the simulation results of the simulation with regard to the requirements, so that it can, for example, better absorb the loads that occur during use.
- a digital component model 216 is generated, with the digital component model 216 being based on the component geometry or depicting it.
- the digital component model 216 can be generated, for example, in such a way that it forms the basis for producing the component geometry 218 underlying component 214 represents.
- the digital component model 216 can be an STL model, for example.
- an organism unit in this case a finger joint and a hip joint, is recorded using an imaging method.
- an imaging method is a three-dimensional representation as a result of an imaging method.
- the imaging method can be, for example, an X-ray method or a photograph, with the two-dimensional images obtained preferably being combined to form a three-dimensional image.
- the imaging method can be computed tomography.
- FIG. 4 shows two steps of the computer-implemented method.
- an algorithm 220 is used to determine a large number of adaptation variables 222.
- the adaptation variables 222 are determined by evaluating an image 210 of the organism unit.
- the image 210 can be a surface model 212, for example.
- the adaptation variables 222 are based on geometric properties of the organism unit, namely in particular lengths, axes and cross sections.
- the component geometry 218 is defined based on the adaptation variables 222 and then a component model 216 is created.
- FIG. 5 shows a schematic view of an exemplary embodiment of a component 214 which is designed as an implant.
- the component geometry 218 of the component 214 has been defined using a computer-implemented method 200 .
- This computer-implemented method comprises the steps: determining 202 a large number of adaptation variables 222 by evaluating the image 210 of the organism unit, the large number of adaptation variables 222 being based on geometric properties of the organism unit and defining 204 the component geometry 218 of the component 214 based on one with the plurality of Adaptation sizes 222 adapted component base geometry.
- the component base geometry can approximately correspond to the component geometry 218 of the component 214 , the component base geometry having been adapted to the specific formation of the organism unit by means of the multiplicity of adaptation variables 222 .
- the computer-implemented method described above enables the precise and application-oriented creation of component geometries 218 adapted to organism units, with the multi-stage structure of the method avoiding the use of complex, error-prone and in particular not or only partially comprehensible AI models.
- the method is comparatively easy to implement computer and produces particularly advantageous results.
- components can thus be produced which are more comfortable to wear, have fewer follow-up operations and are more economical.
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Abstract
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Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| DE102021118980.2A DE102021118980A1 (de) | 2021-07-22 | 2021-07-22 | Computerimplementiertes Verfahren und Vorrichtung zur geometrischen Definition eines an eine Organismuseinheit angepassten Bauteils |
| PCT/DE2022/100507 WO2023001332A1 (de) | 2021-07-22 | 2022-07-15 | Computerimplementiertes verfahren und vorrichtung zur geometrischen definition eines an eine organismuseinheit angepassten bauteils |
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| Publication Number | Publication Date |
|---|---|
| EP4374276A1 true EP4374276A1 (de) | 2024-05-29 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| EP22754292.5A Pending EP4374276A1 (de) | 2021-07-22 | 2022-07-15 | Computerimplementiertes verfahren und vorrichtung zur geometrischen definition eines an eine organismuseinheit angepassten bauteils |
Country Status (4)
| Country | Link |
|---|---|
| US (1) | US20250087370A1 (de) |
| EP (1) | EP4374276A1 (de) |
| DE (1) | DE102021118980A1 (de) |
| WO (1) | WO2023001332A1 (de) |
Family Cites Families (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE102012025431A1 (de) | 2012-12-21 | 2014-06-26 | Exos Gmbh | Leit-Stütz-Struktur zum Koppeln mit einem Lebewesen und Verfahren zur Bestimmung geeigneter Anlageflächen an dem Lebewesen |
| WO2018022752A1 (en) | 2016-07-27 | 2018-02-01 | James R. Glidewell Dental Ceramics, Inc. | Dental cad automation using deep learning |
| US11439508B2 (en) * | 2016-11-30 | 2022-09-13 | Fited, Inc. | 3D modeling systems and methods |
| DE102019126111A1 (de) | 2019-09-27 | 2021-04-01 | Urban Technology GmbH | Verfahren, Computerprogrammprodukt und Simulationssystem zur Erstellung und Ausgabe eines dreidimensionalen Modells eines Gebisses |
-
2021
- 2021-07-22 DE DE102021118980.2A patent/DE102021118980A1/de active Pending
-
2022
- 2022-07-15 EP EP22754292.5A patent/EP4374276A1/de active Pending
- 2022-07-15 WO PCT/DE2022/100507 patent/WO2023001332A1/de not_active Ceased
- 2022-07-15 US US18/580,277 patent/US20250087370A1/en active Pending
Also Published As
| Publication number | Publication date |
|---|---|
| WO2023001332A1 (de) | 2023-01-26 |
| DE102021118980A1 (de) | 2023-01-26 |
| US20250087370A1 (en) | 2025-03-13 |
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