Medical Tubing Application Examples
Medical Tubing Application Examples – Medical Coatings – Cheersonic
Hoses and tubing are used in a wide variety of applications in the medical industry, from wound drains and catheters to drug delivery and feeding tubes. The current production technology for such products has gone far beyond single-lumen hollow tubes to multi-lumen extruded tubes that can include stops, bumps and different thicknesses in a single design.
1. Bioprocess flow tube
Application: Tubing for high velocity discharge through high volume bottom outlet disposable bio bags.
question:
* to reach the expected flow.
* Tube collapsed due to high suction pressure.
Solution: Increased tube wall thickness from 0.32 mm/0.125 in. to 0.48 mm/0.188 in. while maintaining the same ID. Thicker pipe walls prevent pipe collapse and achieve specified flow rates.
2. Central venous access catheter
Application: Multi-lumen tubing and fluid injection molded connectors for central venous access catheters.
Problem: Maintain the direction of the supply line.
The solution: a combination of multi-lumen tubing and compression-molded connectors using high-precision, liquid injection molding and extrusion production techniques.
3. Orthopedic tubing
Application: Orthopedic additive eluting extruded tubes used in medical devices
question:
*Requires OD less than 0.012 in..
* Precise control of specific elution profiles to maintain the same concentration over extended release time.
The solution: close cooperation starting with the elution concept. A single material was used to form a narrow two-layer extruded structure, with the core part acting as the elution rod and the outer concentric layers for precise regulation of elution in MIS procedures. The entire cross section is less than 0.012 in.. The customer’s measuring fixture has been developed and validated through this process.
4. Implantable Neurostimulator
Applications: Electrical impulses to stimulate the brain and spinal cord are used to treat chronic pain, as well as conditions such as epilepsy, Parkinson’s disease, and Tourette syndrome.
Problem: Wires must be very small while maintaining insulation in order to deliver nerve stimulation signals to precise locations.
Solution: With advances in quality process control and monitoring systems, micro-extrusion technology can meet extremely tight tolerances: For profiles ≤ 0.030 in. diameter, ID, OD, wall thickness, and concentricity can meet 0.001 in. tolerance requirements, allowing conductors to be assembled to ensure consistent insulation along their length and minimize overall dimensions.
5. Pacemaker leads
Application: Insulated and biocompatible extrusion with multiple conductors for pacemaker leads.
question:
* A method of strain relief is required to reduce the risk of fracture due to dynamic loading.
* Multi-cavity extrusion design, can include more than 30 sizes, tolerance ≤ 0.002 in..
Solution: Using continuous twisting tube processing technology, custom tooling and measuring fixtures are used to verify the processing capability of all required dimensions.
6. Heart pump
Application: Cable Jacket
Problem: Provide a biocompatible protective coating for a cable assembly that includes multiple conductors, insulators, and strength members.
Solution: A custom extrusion tool was developed and validated that, combined with a precise window of cure parameters, could encapsulate the silicone jacket on the outside of the cable assembly without damaging the cable assembly inside.
UAM7000-M Ultrasonic Drug Balloon Coating Machine is designed for drug eluting balloons. It provides a uniform drug coating for the balloon catheter through ultrasonic spray technology. UAM7000-M can also be used to adjust and control the deposition process of drug coatings for different liquid formulations. With the help of a special fixing device design, the entire balloon catheter can be sprayed with a maximum spraying length of 280 mm., It also has the functions of solvent doping, pre-heating, humidity control, and drying. The equipment has the characteristics of precise application amount, uniform film layer, and high utilization rate of chemical liquid. Cheersonic has extensive experience in surface coating of implantable medical devices (such as drug stents and balloons), and can provide customers with complete solutions.
