PYT-022 Suture Needle Toughness and Elasticity Tester
The Peyotal PYT-022 Suture Needle Toughness and Elasticity Tester incorporates a 7-inch professional color LCD screen paired with an intelligent microcontroller to manage automated bending, deflection holding, and non-contact deformation tracking. The system features quick-change fixture modules that allow seamless transitions between toughness fracture verification and elasticity chord length measurement. Operating across a nominal needle diameter range of 0.2 to 1.3 mm and lengths from 12 mm to under 80 mm, the system regulates deformation rates between 0.01 mm/s and 1 mm/s, measuring linear displacement with an indication error within +/-0.1 mm and a deformation resolution of 0.01 mm. The built-in printer provides immediate physical receipts of testing metrics and batch records. Encased in a rigid 20 kg anti-vibration benchtop chassis, the PYT-022 delivers standardized quality assurance for surgical suture production plants, cleanroom packaging lines, and biomedical testing laboratories across Southeast Asia, Central Asia, Africa, and Latin America.
product details
The Suture Needle Toughness and Elasticity Tester (Model: PYT-022) is an advanced laboratory testing apparatus engineered and manufactured by Peyotal. Specifically designed to assess the mechanical toughness limits and elastic recovery performance of various medical suture needles (including straight needles, 1/2 curved needles, and 3/8 curved needles), this instrument evaluates whether needles undergo brittle fracture under large-angle bending or repeated deflection, while measuring chord length deformation and resilience upon unloading.
Standards: Fully compliant with medical suture needle regulatory standards including YY0166-2002 and YY0043-2016.
| Model | PYT-022 |
| Brand | Peyotal |
| Testing Principle | Precision mechanical central loading to evaluate bending deflection, fracture resistance thresholds, and chord length deformation recovery using a dedicated distance measuring mechanism. |
| Standard Compliance | YY0166-2002 / YY0043-2016 |
| Chassis Size | 400 mm (L) * 270 mm (W) * 360 mm (H) |
| Warranty | 12 months |
| Specification Item | Technical Data & Testing Performance |
| Primary Laboratory Application | Toughness fracture resistance, large-angle bending, and elastic recovery testing for suture needles |
| Compatible Needle Types | Straight suture needles, 1/2 arc curved needles, 3/8 arc curved needles |
| Needle Diameter Specification | 0.2 mm to 1.3 mm nominal wire diameter range |
| Needle Length Range | 12 mm <= L < 80 mm total length accommodation |
| Displacement Indication Error | Less than or equal to +/-0.1 mm accuracy threshold |
| Deformation Measurement Resolution | 0.01 mm high-precision displacement tracking |
| Controlled Deformation Speed | 0.01 mm/s to 1 mm/s adjustable linear driving rate |
| Display & User Interface | 7-inch professional color LCD screen with menu-driven navigation and keypad control |
| Testing Workflow Automation | Automatic deformation adjustment, automated elasticity testing cycle, and dwell execution |
| Fixture Engineering | Modular quick-swap clamping fixtures for alternating toughness and elasticity testing |
| Report Output Hardware | Built-in on-board printer for immediate test data receipts and batch statistics |
| Standard Configuration | Host Machine, Specialized Fixtures, Printing Paper, Instruction Manual |
Q1: What is the exact laboratory testing principle and workflow for measuring suture needle toughness and elasticity?
A: For toughness evaluation, a controlled force is applied to the center of the needle to bend it to a specified geometry (such as bending a straight needle to 90 degrees, a 1/2 arc to a 3/8 arc, or a 3/8 arc to straight). The system calculates the downward deflection travel and determines pass/fail compliance based on whether brittle snapping occurs. For elasticity measurement, the central force flexes the needle until the chord length extends to a preset value, after which the load is removed gradually. A dedicated distance measuring mechanism measures the resulting chord length deformation without applying force, calculating the exact elastic recovery rate.
Q2: Why is evaluating both toughness and elasticity critical for surgical suture needles?
A: Suture needles must have sufficient elasticity to spring back to their original curvature after penetrating dense biological tissues, preventing permanent distortion during suturing. At the same time, they require high toughness to ensure that if excessive surgical torque or unexpected bony resistance is encountered, the needle bends rather than breaking brittlely inside the patient’s body.
Q3: How does the PYT-022 ensure operator-independent accuracy during elasticity testing?
A: The instrument uses an intelligent programmable controller that automates deformation rate adjustment (0.01 mm/s to 1 mm/s) and executes unloading sequences without manual intervention. The dedicated distance measuring mechanism tracks chord expansion and residual deformation independently of manual dial gauges or calipers, eliminating human measurement variance.
Q4: What facility utilities and accessories are included in the delivery package?
A: The PYT-022 operates on standard single-phase AC electrical power (220V / 50Hz or 110V / 60Hz) and functions as a standalone benchtop unit without requiring compressed air. Built into a 20 kg anti-vibration chassis, the package arrives complete with the tester mainframe, specialized elasticity and toughness testing fixtures, thermal printing paper rolls, a power cable, and a comprehensive user instruction manual.
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