YY/T 0851-2023Medical thrombosis prophylaxis hosiery (English PDF)
医用防血栓袜
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Issued by
NMPA
Level / Type
Industry · Recommended
Issue date
September 5, 2023
Implementation date
September 15, 2024
Scope
YY/T 0851-2023 is the English-translated version of 医用防血栓袜.
YY/T 0851-2023 is the Chinese standard "Medical thrombosis prophylaxis hosiery". Its scope clause reads: This document specifies the requirements and test methods for medical anti-thrombotic stockings knitted from natural and/or synthetic fibers.
This document applies to anti-thrombotic stockings used as medical devices to prevent venous thrombosis. This document does not apply to custom socks. Its clauses include normative reference documents; terms and definitions.
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Document preview — YY/T 0851-2023
National Standard of the People's Republic of China
- ICS
- 11.040
- Classification
- C31
- Replacing
- YY/T 0851-2011
Issued by: National Medical Products Administration
Contents
- 1 Scope
- 2 Normative reference documents
- 3 Terms and definitions
- 3.1 compression
- 3.2 Durability
- 3.3 extensibility
- 3.4 actual extension ratepracticalelongation
- 3.5 Compression force system pressureprofile
- 3.6 Residualpressure
1 Scope
This document specifies the requirements and test methods for medical anti-thrombotic stockings knitted from natural and/or synthetic fibers.
This document applies to anti-thrombotic stockings used as medical devices to prevent venous thrombosis.
This document does not apply to custom socks.
2 Normative reference documents
The contents of the following documents constitute essential provisions of this document through normative references in the text. Among them, the dated quotations
For undated referenced documents, only the version corresponding to that date applies to this document; for undated referenced documents, the latest version (including all amendments) applies to this document.
GB/T 6529-2008 Standard atmosphere for humidity conditioning and testing of textiles
GB/T 8629-2017 Home washing and drying procedures for textile testing
GB/T 13634 Calibration of standard force measuring instrument for inspection of uniaxial testing machines for metallic materials
YY/T 0466.1 Medical devices Symbols used for labeling, marking and providing information on medical devices Part 1.General requirements
3 Terms and definitions
The following terms and definitions apply to this document.
3.1 compression
The pressure exerted on the legs by anti-thrombotic socks (3.8).
3.2 Durability
The ability of anti-embolism socks (3.8) to maintain their labeled compression properties.
3.3 extensibility
Under the test procedures specified in this document, anti-thrombotic socks (3.8) can stretch along the transverse (circumferential) or longitudinal (lengthwise direction of the leg) of the leg.
Maximum extent, expressed as a percentage of the specification of anti-thrombotic socks (3.8) when no force is applied.
3.4 actual extension ratepracticalelongation
The elongation of socks worn on the legs in the transverse direction, expressed as the difference between the marked circumference and the unstretched circumference as a percentage of the unstretched circumference.
3.5 Compression force system pressureprofile
Representation of the compression force (3.1) exerted by anti-thrombotic socks (3.8) in the direction of the leg.
3.6 Residualpressure
The compression force (3.1) at a point expressed as a percentage of the compression force (3.1) at the ankle.
......
This preview omits tables, figures, formulas and parts of the technical clauses. The complete document — 44 pages — is available in the English PDF.
Referenced standards
Normative references
- GB/T 6529-2008Textiles - Standard atmospheres for conditioning and testing
- GB/T 8629-2017Textiles -- Domestic washing and drying procedures for textile testing
- GB/T 13634Metallic materials - Calibration of force-proving instruments used for the verification of uniaxial testing machines
- YY/T 0466.1Medical devices - Symbols to be used with information to be supplied by the manufacturer - Part 1: General requirements
Editions of YY/T 0851
| Edition | Title | Revision | Status |
|---|---|---|---|
| YY/T 0851-2023 | Medical thrombosis prophylaxis hosiery | current edition | Current |
| YY/T 0851-2011 | Medical thrombosis prophylaxis hosiery | previous edition | In force until 2024-09-15 |
This page sells the current edition, YY/T 0851-2023. Earlier editions are listed for reference only.
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Related Standards
GB/T 13634-2019 — Metallic materials - Calibration of force-proving instruments used for the verification of uniaxial testing machines
GB/T 6529-2008 — Textiles - Standard atmospheres for conditioning and testing
GB/T 8629-2017 — Textiles -- Domestic washing and drying procedures for textile testing
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