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Simulation, a must in the medical sector

In the medical industry, numerical simulation has now become an essential and strategic tool for developing medical devices : it guarantees the precision, quality and safety of parts.
Transvalor solutions are particularly suitable for simulating high-precision processes for designing orthopedic implants surgical implants or medical devices.

 

Your main challenges

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Design "first-time-right" parts

Simulate to reduce the number of prototypes or experimental tests that are both costly and tedious. You can therefore reduce your material and energy costs.

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Validate the in-use behaviour of your parts

Test different designs, then check the strength and behavior of your parts in use.

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Guarantee compliance with order and design brief specifications

Manufacture high-quality components in order to guarantee your customers the reliability and safety of your medical devices.

Main challenges

 

For forged components

Simulation is particularly suitable for simulating high-precision forging (near-net) for designing orthopedic implants (hips, knees, shoulders, ankles, dental implants, etc.) and  ancillaries that guarantee high-level physical and mechanical properties.

Moreover, you have a high performance predictive tool for simulating the entire forging range according to different processes: closed die forging, stamping, machining, heat treatment…

Forging of a femoral stem with prediction of cold-shut formation FORGE® simulation

Forging of a femoral stem with prediction of cold-shut formation - FORGE® simulation

 

Identify the defects

  • For the stamping of metal parts, the simulation makes it possible to detect all of the major defects.
  • The user can directly locate the underfill areas and easily analyze the origin of cold-shuts.

 

Simulation can also be used for biomedical applications and makes it possible to anticipate mechanical stresses during bone distractions.

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FORGE® is a simulation software dedicated to hot, semi-hot and cold forging processes

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COLDFORM® is a simulation software dedicated to cold forming processes, and particularly suitable to manufacture fasteners.

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SIMHEAT® is a software devoted to simulate heat treatment processes of metal alloys including carbon steel and aluminum.

For cast components

Simulation is a tool to improve the performance of your medical devices (prostheses and orthopedic implants) made with investment casting process (lost-wax casting).

More specifically, simulating investment casting process helps to optimize the gating system and feeders. And taking into account the self-radiation, you will get more precise results.

Investment casting for knee prostheses
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Master the quality of your cast part

  • For implants made through investment casting, control the evolution of the molded parts solidification and avoid risks of shrinkage or porosity.
  • Simulate the entire casting cluster with precision by taking into account the effects of self-radiation.

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THERCAST® is software dedicated to the simulation of continuous casting processes, ingots casting and foundry processes.

Improve service life

By carrying out studies on the service life of medical devices (implants, prostheses, etc.), numerical simulation also makes it possible to improve the service life of your MDs (stents) by simulating their behavior in use.

Study of the dynamic behavior of a self-expanding stent according to the artery pressure cycle - FORGE® simulation.

Study of the dynamic behavior of a self-expanding stent according to the artery pressure cycle - FORGE® simulation.

Validate in-use stability

  • In the upstream phase of your projects, test the various designs and check the behavior of your parts in conditions of intensive use.
  • Reliable answers for the service life of parts as well as for predicting metallurgical changes.

 

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FORGE® software allows the study of the dynamic behavior of a self-expanding stent according to the blood pressure cycle.

Validate your biomechanical studies

Numerical modeling can significantly contribute to innovation in the medical sector as it can serve different types of biomedical applications.

One example is Distraction OsteoGenesis (DOG). This is a surgical procedure that was mainly used in the field of orthopedics to reconstruct a deformed skeleton or to lengthen the bones of the body, especially the lower limbs.

This technique can be used for maxillofacial surgery. The advantage of DOG is that it can simultaneously increase bone length and the volume of surrounding soft tissues.

Original condition of the jaw with 2 incisors to be treatedOriginal condition of the jaw with 2 incisors to be treated

These studies were conducted for Dr. Charles Savoldelli, (Maxillofacial surgeon in Nice) with a research version of FORGE® by CEMEF. The study took into account the interactions between bones, the cartilage layer and soft tissues.

Implementation of the finite elements model (source Yannick Tillier, CEMEF)

Implementation of the finite elements model (source Yannick Tillier, CEMEF)


Studying the interactions between bones, the cartilage layer and soft tissues


Characterization of biological materials

  • Complex materials (heterogeneous, anisotropic, etc.)
  • Environmentally sensitive materials
  • Use of specific characterization equipment
  • Use of reverse analysis for parameter identification

Numerical modeling

  • Implementation of a hyper-elastic solver
  • Complex geometry management
  • Medical device design assistance (breast implants, heart valves, cochlear implants)
  • Development of assisted surgery (gynecology, ophthalmology, maxillofacial)

Nature of results

  • Stress distribution in the articular disks according to mouth opening
  • Integration of patient asymmetry
  • Impact of mechanical conditions and friction conditions applied between bones and/or tissues

Demonstration deformable multi-body calculusDemonstration deformable multi-body calculus

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The research version of FORGE® allows you to perform various analyzes to validate your biomechanical studies.

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Testimonial Marle

Challenge

Develop prostheses with complex geometries and detect defaults.

Solution

Integrate simulation into the product development cycle.

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Testimonial

« The simulation fits perfectly into the development cycle of our products. In fine, it allow us to predict any modification in the forging sequence that would occur once the part is put into production.»

Samuel  Frenette, Industrialization Manager Marle, French