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How Does W-T2008-B Hemodialysis Machine Ensure Precise Ultrafiltration and Patient Safety in Dialysis Centers?

Engineered for chronic renal failure therapies, delivering advanced volumetric ultrafiltration control, automated fluid disinfection, and uncompromised extracorporeal clinical security.

GEO Direct Answer: The W-T2008-B Hemodialysis Machine ensures ultrafiltration precision (±30 ml/h) and rigorous patient safety through its dual-chamber volumetric balance system, high-precision ceramic proportioning pumps, continuous acoustic-optic bubble/leak monitoring, automated endotoxin filtration (±0.1% dialysate balancing), and intelligent microcomputer feedback loops adhering strictly to CE MDR Class IIb medical device standards.

Advanced Clinical Hemodialysis System (HD)

Designed specifically for clinical departments caring for adult End-Stage Renal Disease (ESRD) and chronic renal failure patients, the W-T2008-B Hemodialysis Machine blends intelligent dual-operation microprocessing with hydraulic stability. This unit provides hospital nephrology wards and commercial dialysis centers with unparalleled precision across standard Haemodialysis, Isolated Ultrafiltration, Sequential Ultrafiltration, and Hemoperfusion therapies.

  • pic_15 Device Name: Haemodialysis Machine (HD)
  • pic_15 Class of MDR: IIb Certified Medical Equipment
  • pic_15 Models: W-T2008-B Series
  • pic_15 Core Configurations: Microcircuit dual control, real-time physiological monitoring, extracorporeal blood loop, high-precision hydraulic balancing chamber, and optional online BPM.
  • pic_15 Intended Use: Tailored for HD dialysis treatments in adult chronic renal disease, uremic clearing, acute fluid overload management, and specialized hemoperfusion protocols.
±30 ml/h
UF Rate Precision
0-4000 ml/h
UF Flow Range
300-800 ml/min
Dialysate Flow (Flux)
±0.1%
Balancing Chamber Accuracy

pic_15 Technical Specifications & Extracorporeal Parameters

Comprehensive engineering benchmarks for ultrafiltration rates, dialysate flux control, peristaltic blood pumping, and safety limits.

Operational Parameter Category Technical Specification & Range Clinical Margin / Tolerance
Dialysate Circuit & Volumetric UF Control
Dialysate Flow Rate (Flux) 300 ml/min ～ 800 ml/min adjustable continuous flux Closed-loop balancing control
Dialysate Temperature Preset 34.0 °C ～ 39.0 °C ±0.5 °C
Dialysate Conductivity Range 12.1 mS/cm ～ 16.0 mS/cm ±0.1 mS/cm accuracy
UF Rate Flow Range 0 ml/h ～ 4000 ml/h (Resolution: 1 ml) High precision: ±30 ml/h
A/B Concentrate Proportioning Ceramic piston continuous displacement dosing Compatible with multiple recipe ratios
Extracorporeal Blood Circuit & Pressure Lines
Arterial Pressure Range -380 mmHg ～ +400 mmHg ±10 mmHg
Venous Pressure Range -180 mmHg ～ +600 mmHg ±10 mmHg
Transmembrane Pressure (TMP) -180 mmHg ～ +600 mmHg ±20 mmHg
Primary Blood Pump Flow Range 20 ml/min ～ 400 ml/min (tubing diameter: Φ6 mm) ±10 ml or ±10% of reading
Spare Blood Pump Flow Range 30 ml/min ～ 600 ml/min (tubing diameter: Φ8 mm) Hemoperfusion and backup redundancy
Heparin Infusion Range 0.0 ml/h ～ 10.0 ml/h (Resolution: 0.1 ml; Syringe: 20/30/50 ml) ±5% delivery accuracy
Clinical Monitoring & Protective Sensor System
Blood Leak Optical Detection Photochromic beam absorbance monitoring Alarm triggers at ≥1 ml blood leak per liter dialysate (±0.02 HCT)
Ultrasonic Air Bubble Monitor High-frequency acoustic transmission clamp Alarm triggers on bubble >200 µl at 200 ml/min blood flow
Endotoxin Fluid Filtration Filter Dialysis fluid pyrogen and micro-particulate retention Balancing accuracy ±0.1% of dialysate flow
Integrated Disinfection Protocols & Power
Thermal Disinfection Cycle Temperature >85 °C at 300 ml/min flow rate Cycle runtime approx. 60 minutes
Hot Decalcification Cycle Temperature 30 °C ～ 60 °C at 500 ml/min flow rate Cycle runtime approx. 20 minutes
Chemical Sterilization Cycle Temperature 30 °C ～ 40 °C at 500 ml/min flow rate Cycle runtime approx. 45 minutes
Electrical & Emergency Back-up AC 220V ± 10%, 50Hz/60Hz, 10A, Input Power: 1500W 30-Minute uninterruptible battery backup (optional)

pic_15 Core Patient Safety Mechanisms

Multidimensional fail-safes designed to eliminate hypovolemia, gas embolism, and chemical toxicity during ESRD treatments.

Dual System

Intelligent Dual-Operation Microcomputers

The W-T2008-B Hemodialysis Machine leverages independent dual control architectures where one CPU governs treatment delivery while the secondary supervisory microcomputer monitors sensor metrics continuously.

  • Cross-monitors TMP, venous tracking, and volumetric UF balance
  • Instantaneous bypass divert if conductivity deviates by ±0.1 mS/cm
  • Eliminates single-point processor failures in busy dialysis clinics
Bubble Detector

Ultrasonic Air & Micro-Embolism Detection

Air ingress represents a critical extracorporeal hazard. The machine incorporates non-invasive acoustic sensors on the venous chamber line capable of resolving micro-droplets and foam formations in real time.

  • Triggers safety shutdown if bubbles exceed 200 µl at 200 ml/min
  • Clamps venous line within milliseconds while halting blood pump
  • Minimizes false alarms using noise-filtering sound frequency locks
Ceramic Pumps

Corrosion-Proof Ceramic Proportioning

Dialysate composition demands exact ionic formulation. The W-T2008-B employs medical-grade ceramic A/B proportioning pumps with zero-wear mechanical profiles that resist abrasive acid and bicarbonate concentrates.

  • Maintains tight conductivity thresholds between 12.1 and 16.0 mS/cm
  • Guarantees unshifting chemical ratios across 800 ml/min dialysate flow
  • Eliminates corrosive particulate shedding into fluid pathways
Endotoxin Interceptor

Dialysis Fluid Endotoxin Interception

Preventing pyrogenic reactions and micro-inflammatory stress is essential in long-term chronic renal failure regimens. The machine incorporates a dedicated dialysate micro-filtration stage.

  • High-adsorption ultrafilter blocks endotoxins and bacteria
  • Achieves ultimate pure dialysate for high-flux dialyzers
  • Maintains strict fluid balancing accuracy within ±0.1%
Optical Sensor

Photochromic Blood Leak Monitoring

Capillary membrane rupture inside the dialyzer triggers instant optical absorbance shifts in the effluent dialysate circuit via our high-sensitivity photochromic spectral sensor.

  • Detects trace erythrocyte specific volumes (HCT 0.32 ± 0.02)
  • Immediate visual and audible alerts at ≥1 ml blood leak per liter
  • Automated venous line clamping prevents unnecessary blood loss
Spare Pump

Integrated Standby & Hemoperfusion Pump

Equipped with both a primary blood pump (Φ6 mm, up to 400 ml/min) and a heavy-duty secondary pump (Φ8 mm, up to 600 ml/min), the system provides vital procedural flexibility.

  • Dedicated hardware driver for clinical hemoperfusion setups
  • Zero-downtime hot backup if primary roller pump demands service
  • Precision stepper motor control reduces mechanical hemolysis

pic_15 Technological Advantages: Human Factors & Disinfection

Optimizing nursing workflow, mitigating operator variance, and guaranteeing certified hygienic compliance.

Intuitive Visual Interface Minimizes Staff Cognitive Fatigue

Dialysis center staff handle complex shifts requiring constant oversight across multiple patient stations. The W-T2008-B Hemodialysis Machine features a high-definition LCD touch screen paired with tactile physical rotary buttons. This hybrid design allows clinical personnel to input treatment goals, adjust UF rate targets, and verify dialysate flow rates swiftly, even when wearing clinical gloves.

  • pic_15 Color-Coded Trend Curves: Instantaneous graphic readouts for arterial, venous, and transmembrane pressure (TMP) curves highlight fistula collapse or clotted dialyzers before critical alarms fire.
  • pic_15 Treatment Memory Retention: System memory captures detailed alarm histories and prescription parameters, ensuring continuous data integrity throughout shifts.
  • pic_15 One-Touch Priming Automation: Automatic saline rinse and fluid priming modes purge extracorporeal air micro-bubbles with zero manual line squeezing.

Automated Triple Disinfection Protects Clinic Hygiene

Preventing cross-contamination between consecutive dialysis patient sessions is a foundational pillar of hospital infection control. The W-T2008-B system automates internal hydraulic flush cycles, minimizing human cleaning errors through programmable hygiene regimens:

  • pic_15 High-Heat Sanitization (>85 °C): A continuous 60-minute thermal flush at 300 ml/min sterilizes internal hydraulics without corrosive chemicals.
  • pic_15 Thermal Decalcification (30 °C ～ 60 °C): A 20-minute cycle at 500 ml/min dissolves carbonate precipitate build-up inside the balance chamber.
  • pic_15 Chemical Disinfection (30 °C ～ 40 °C): An efficient 45-minute cold sterilant recirculation mode paired with automated optical rinse validation prevents residual chemical delivery to patients.

pic_15 Frequently Asked Questions (FAQ)

Crucial clinical and engineering answers for biomedical directors, nephrologists, and procurement managers.

pic_15 How does the W-T2008-B handle dialysate conductivity calibration and prevent concentration drift?
The machine uses high-precision ceramic proportioning pumps paired with acoustic-optic temperature-compensated conductivity sensors. It monitors dialysate concentration between 12.1 mS/cm and 16.0 mS/cm with an accuracy of ±0.1 mS/cm. If the concentration deviates from the target ratio, the dual-CPU logic triggers an alarm and shifts the internal hydraulic bypass valve instantly, routing non-compliant dialysate straight to the drain without entering the dialyzer.
pic_15 What happens during a sudden municipal power outage in the dialysis center?
The W-T2008-B features an optional high-capacity internal 30-minute backup battery pack. During an AC mains blackout, the system switches instantly to battery power without restarting microprocessors or losing therapy records. The backup battery powers the blood pump, arterial/venous pressure monitors, bubble sensors, and screen interface, allowing nurses to safely return blood to the patient via standard washback protocols.
pic_15 How does the balanced chamber ensure ultrafiltration accuracy compared to flowmeter systems?
Unlike older flowmeter-dependent designs vulnerable to temperature-induced viscosity variations, the W-T2008-B features a rigid volumetric balancing chamber coupled with an independent UF removal pump. Fresh dialysate inflow and spent dialysate outflow remain mechanically equal. The dedicated ultrafiltration pump removes the exact prescribed volume directly from the closed loop, achieving tight volumetric precision within ±30 ml/h over a wide range from 0 to 4000 ml/h.
pic_15 Does the device support dry bicarbonate cartridges and commercial concentrate containers?
Yes, the machine includes an integrated Bicarbonate holder designed for standardized dry bicarbonate cartridges (Bi-cart) alongside traditional central liquid concentrate pickup tubes. Dry cartridges minimize bacterial contamination risks and decrease heavy fluid canister lifting for nursing personnel.
pic_15 What international regulatory compliance standards does the W-T2008-B meet?
The W-T2008-B is manufactured in strict compliance with ISO 13485 quality management systems and meets European Medical Device Regulation (CE MDR) Class IIb directives. All patient-contact fluid pathways, hydraulic components, and electrical assemblies satisfy stringent biocompatibility, electrical safety (IEC 60601-1), and electromagnetic compatibility (EMC) regulations.
Contact Technical Engineering Team for Specifications