The application scenarios of medical device PVC pipes cover multiple core areas including clinical diagnosis and treatment, equipment supporting, and laboratories. The core conclusion is: relying on the advantages of low cost, easy processing, and strong compliance, flexible PVC pipes dominate disposable medical consumables, while rigid PVC pipes are suitable for equipment pipelines and fixing systems, making them highly versatile pipeline materials in the medical field.
- Infusion/Transfusion Systems: As the main pipelines of infusion sets and blood transfusion sets, they must have transparency (to facilitate observation of fluid flow), flexibility (to adapt to patient activities), meet the requirement of no leachables, and be compatible with media such as normal saline, medical solutions, and blood.
- Human Interventional Consumables: Catheters (for urethral interventional drainage), gastric tubes (for gastrointestinal decompression/feeding), and drainage tubes (for postoperative fluid/pus drainage) need to be soft and smooth with good biocompatibility to avoid irritating human tissues. Some can withstand ethylene oxide sterilization.
- Respiratory Support: Ventilator pipelines and oxygen mask connecting pipes must be disinfection-resistant (to alcohol and ethylene oxide), have good airtightness, be capable of delivering oxygen or mixed gases for a long time, and have flexibility to meet the needs of patients' position adjustment.
- Blood Collection and Extracorporeal Circulation: Blood collection needle connecting pipes and hemodialysis pipelines (partial auxiliary pipelines) need to be resistant to blood clot adhesion and blood corrosion, while having a certain compressive strength to adapt to the pressure requirements of extracorporeal circulation systems.
- Equipment Fluid Transmission: Pipelines for medical negative pressure suction systems (negative pressure drainage in wards/operating rooms) and liquid supply pipes for disinfection equipment (such as pipelines for ultrasonic cleaners). Rigid PVC pipes have high rigidity and pressure resistance, can be fixedly installed for a long time, and are not easy to deform.
- Equipment Housing and Protection: Built-in pipelines for medical instrument housings (such as internal waste liquid pipes of monitors and analyzers) and equipment protective sleeves. Rigid PVC pipes have good insulation and wear resistance, and can adapt to the compact space layout inside equipment.
- Dental/Ophthalmic Special Use: Saliva suction pipes and cooling water delivery pipes of dental comprehensive treatment tables, and connecting pipes of ophthalmic irrigation equipment. They need to be resistant to corrosion by disinfectants (such as sodium hypochlorite) and have a certain bending resistance to adapt to the frequency of diagnosis and treatment operations.
- Laboratory Reagent Transmission: Reagent transmission pipes and waste liquid collection pipes in biochemical laboratories. Rigid PVC pipes have strong chemical stability, can be compatible with acid-base reagents and organic solvents, and avoid pipeline corrosion and leakage.
- Hospital Logistics Pipelines: Cleaning liquid delivery pipes in central sterile supply departments and branch pipes of sewage treatment systems. They need to be high-temperature resistant (≤60℃), disinfectant-resistant, low-cost, and easy to lay in batches, suitable for long-term fixed use.
- Sample Preservation and Transportation: Blood/urine sample transportation pipes and low-temperature sample storage sleeves. Some flexible PVC pipes can withstand low temperatures (below -20℃) and have good sealing performance to prevent sample leakage and contamination.
- Special Consumables for Infants and Young Children: Neonatal infusion pipelines and premature infant oxygen pipes need to have smaller specifications (such as 0.8mm inner diameter) and ultra-soft materials to reduce irritation to the delicate tissues of infants and young children, and meet more stringent biocompatibility standards.
- High-Pressure Sterilization Supporting: Auxiliary steam supply pipes for high-pressure steam sterilizers (needing to withstand short-term high temperatures of 121℃) and pipelines inside ethylene oxide sterilization chambers. Reinforced flexible PVC pipes are adopted to balance high temperature/sterilant corrosion resistance and flexibility.
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