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VORGANGSHAFTIGKEIT

Glossary entry

German term or phrase:

Eckgrößen

English translation:

key-parameters

Added to glossary by Adrian MM.
Apr 19, 2019 12:55
5 yrs ago
German term

Eckgrößen

German to English Tech/Engineering Medical: Instruments Validation of a crimping process for stents
"Im Rahmen dieser Validierung sollen jeweils die Eckgrößen / Worst-Case Größen der drei Stent Designs (SV-, MV- und LV-Design) getestet werden (siehe Tabelle 3: „Produkt Matrix“ auf S.8 )."
Proposed translations (English)
4 +3 key-parameters
3 threshold size or key size
1 -1 finite element analysis (FEM) / finite element method (FEM) simulation
References
worst-case clinically relevant radius of curvature / worst-case physiological load
Change log

May 3, 2019 08:34: Adrian MM. Created KOG entry

Discussion

Johannes Gleim May 4, 2019:
@ Elizabeth Would you please be so kind to confirm your choice?
Johannes Gleim Apr 20, 2019:
@ Yoana I am glad to note yor findings.
Björn Vrooman Apr 20, 2019:
... "Identifying the worst case size for a product family is an important part of the validation process for implantable medical devices. Understanding your product and especially the in vivo loading conditions are essential for engineering the structure and material specifications for each size over the intended product range."
http://drperry.org/2009/identifying-worst-case-device-sizes

Cf. https://share.ansi.org/Shared Documents/Standards Activities...

"Using worst-case values, Region 1 in Fig. 7.2 represents the area that is safe from fatigue-crack growth and overload fracture under all conditions analyzed (R = 0.1 - 0.7, crack-growth angle = longitudinal, 45°, and circumferential)." https://www.osti.gov/servlets/purl/901533

Could this be a translation?

Best
Yoana Ivanova Apr 19, 2019:
My digging also lead to the same conclusion - key performance parameters vs worst case parameters.
Steffen Walter Apr 19, 2019:
Question is ... ... if "Eckgrößen" is synonymous with "Worst-Case-Größen", but I don't think so. Could this be standard/average (or even "base-case"/"baseline") parameters (performance parameters?) vs. worst-case parameters?
philgoddard Apr 19, 2019:
Could it mean benchmarks, like Eckdaten?

Proposed translations

+3
10 hrs
Selected

key-parameters

One size as a parameter literally 'does fit all', this orginally being my (big-beer) gut reaction or rather standard translation that used to work in virtually every accounting and non-accounting context - in the absence of Yoana's posting of the same answer predicated on her well-researched discussion entry.





--------------------------------------------------
Note added at 10 hrs (2019-04-19 23:07:36 GMT)
--------------------------------------------------

... and also predicated on Steffen W's - minus the baseline - parameters idea or hunch.
Example sentence:

Study of Design Parameters of a Coronary Stent Based on Poly-L-Lactide (PLLA) ... a study on the design parameters of this PLLA stent has been attempted.

Reference:

http://www.ijettjournal.org/2015/volume-28/number-5/IJETT-V28P250.pdf

Peer comment(s):
agree Kim Metzger
13 hrs
Gracias, thanks and danke schön!
agree Steffen Walter : The "design parameters/dimensions" mentioned in your example might be a valid option, too.
1 day 17 hrs
Thanks - and yes, indeed.
agree Ventnai : But without the hyphen?
3 days 10 hrs
Thanks. You are right about no hyphen www.sciencedirect.com/topics/engineering/key-parameter - a journalist relative of mine has written ENG articles & books without any hyphens, but consider hyphenating in a noun 'pile-up' e.g. key-facts & -parameters.
Something went wrong...
4 KudoZ points awarded for this answer. Comment: "Selected automatically based on peer agreement."
-1
1 hr

finite element analysis (FEM) / finite element method (FEM) simulation

finite element analysis (FEM) / finite element method (FEM) simulation

sources:

abaqus: Topics by Science.gov
https://www.science.gov/topicpages/a/abaqus
The finite element (FE) 2D-model of roller levelling process is developed in the .... (interactive FEM mesh generation, finite element libraries, nonlinear material laws, ...... Simulation Abaqus Finite element analysis (FEA) Finite element method ...... During crimping, the stents were compressed from a diameter of 3 mm to 1.2 ...

Finite element analysis of the implantation of a balloon-expandable ...
https://www.ncbi.nlm.nih.gov/pubmed/16186062
DK Liang - ‎2005 - ‎
Finite element analysis of the implantation of a balloon-expandable stent in a ... Finite element method (FEM) was used to simulate the stent implantation under ...

Degradation Model of Bioabsorbable Cardiovascular Stents - PLOS
https://journals.plos.org/plosone/article?id=10.1371/journal...
Q Luo - ‎2014 - ‎
3 nov. 2014 - ... Find and Read Articles · Publishing Information · Publication Fees · Press and Media · Contact .... The finite element method (FEM) is best known to find approximate ... using finite element analysis to simulate the degradation process, ... The crimped stent was then delivered and released to the vascular ...

Elasto-Plastic Analysis of Cardiovascular Stents using Finite Element ...
www.wseas.us/e-library/conferences/brazil2004/.../470-342.d...
A DATYE - ‎
21 abr. 2003 - A nonlinear finite element simulation was performed to analyze the elasto-plastic ... a coronary stent undergoing crimping and deploying processes and to ... The meshing of the stent was done using the FEA commercial code ...

Stent FEA (Crimping, Fatigue, Expand) - FEA/FEM-WORKS
https://www.fea-works.com › ENGLISH › Stent Design & FEA
Stent crimping; Stent manufacture process (stent expand step by step under thermal ... GUIDE FOR FINITE ELEMENT ANALYSIS (FEA) OF METALLIC VASCULAR STENTS ... Test Methods for in vitro Pulsatile Durability Testing of Vascular Stents] ... The numerical simulation not only helps to select the appropriate stent ...

Finite Element Analysis of Stent Functional_iw-04 - Altair Technology ...
https://www.altairatc.com/.../OS_Poster_Finite_Element_Sahaj...
Finite Element Method (FEM) was applied to simulate and study the functional ... crimping onto a balloon catheter to stent expansion at desired diameter and its interaction with ... Process Methodology (details with figures). The ASTM has published standard guideline for “Finite Element Analysis (FEA) of Metallic Vascular.
Peer comment(s):
disagree Steffen Walter : I fail to see how this answer could be relevant to the requested term. "Finite-element analysis" would be "Finite-Elemente-Analyse" in German.
4 hrs
Something went wrong...
8 hrs

threshold size or key size

I propose threshold size or key size. "size" can be rplaced by "diameter" as this is the most important parameter. Some stents can be inflated, but may have a standard size under specified conditions as well as other non-inflatable stents.

threshold value Eckwert {m} [Schwellwert]
benchmark figure econ. Eckwert {m} [Zielvorgabe]
https://www.dict.cc/?s=Eckwert

Therefore, selection of proper device size relative to the target vessel may be considered as important as postdeployment optimization strategy.
https://www.ahajournals.org/doi/10.1161/CIRCINTERVENTIONS.11...

This article shows vessel sizes ranging from 2 to 5 mm, but distinctive stent sizes
https://www.ahajournals.org/doi/full/10.1161/01.CIR.98.18.18...

There is a wide variety of stents used for different purposes, from expandable coronary, vascular and biliary stents, to simple plastic stents used to allow the flow of urine between kidney and bladder.
https://en.wikipedia.org/wiki/Stent

i-Key size Ø2.0 / Ø2.2mm
https://www.pearsondental.com/catalog/product.asp?majcatid=6...

An initial CT study is done to identify the size of the stone and rule out the obstruction (7 mm is the key size- less than that size the expectation is that it.
https://www.google.de/url?sa=t&rct=j&q=&esrc=s&source=web&cd...
Something went wrong...

Reference comments

1 hr
Reference:

worst-case clinically relevant radius of curvature / worst-case physiological load

Medical Devices > Non-Clinical Engineering Tests and ... - FDA
https://www.fda.gov/MedicalDevices/ucm071863.htm
Fretting Corrosion
For coronary stents, because tortuosity of a target deployment site could result in increased micromotion between components or multiple stents, the mock deployment site should be bent to a worst-case clinically relevant radius of curvature, which should be smaller than most anatomical situations encountered in clinical use. For example, for most coronary indications, FDA recommends a 15mm radius of curvature as this represents worst case for 90% of the population based on published angiographic measurements.7 For other indications such as use in coronary bifurcations, please provide a similarly robust clinical rationale for the radius of curvature selected.

Pre-Market Guidance on Bare Cardiovascular Stents - Canada.ca
https://www.canada.ca/.../market-guidance-cardiovascular-ste...

3 feb. 2009 -
1.1.1 Preclinical Testing:
Prior to testing, device samples should be subjected to worst case transport, storage and handling conditions and the maximum number of allowable sterilizations using the sterilization method to be used during production.

Stent Integrity -

Fatigue Testing -

(1) A finite element or other stress analysis that identifies the peak stresses in the stent when subjected to a worst-case physiological load. The amount of residual stress must be determined and accounted for when calculating safety factors. This analysis should demonstrate that fatigue failure of the stent will not occur during the implant life of the stent.
Something went wrong...
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