Abstract: Medical devices are characterized by precision structures and stringent validation requirements (e.g., compliance with FDA/ISO 13485), which place exceptionally high demands on adhesive volume accuracy, consistency, and bubble-free control in dispensing and potting processes. This document provides a detailed review of the core application scenarios, process challenges, and high-specification equipment solutions for Second Intelligent dispensing and potting machines in the production of medical devices such as ECMO systems, ultrasound probes, pacemakers, and reagent dispensing, serving as a selection reference for automated medical device assembly.
I. Why Choose Second Intelligent Dispensing and Potting Machines?
In medical device manufacturing, adhesive application not only determines bond strength but also directly affects product sealing integrity, biocompatibility, and electrical safety. Second Intelligent dispensing systems offer the following core capabilities tailored to the medical industry:
● High-precision micro-dispensing: By combining vision positioning with a piezoelectric jet valve, the minimum dispensed volume can be precisely controlled to the micron level.
● Strict bubble and fluid control: Equipped with vacuum degassing, high-precision thermostatic heating, and a servo-driven extrusion system to eliminate internal bubbles.
● Complex dispensing paths and multi-axis motion: Equipped with a vision positioning system and 4-axis/5-axis coordinated motion technology, it easily handles grooves, inclined surfaces, and curved-surface paths.
II. Seven Core Application Scenarios of Second Intelligent Dispensing and Potting Machines in Medical Devices
1. Life Support and Interventional Devices (ECMO, Laryngeal Masks, Catheters)
Dispensing and sealing of ECMO centrifugal pump heads
Process requirements: High transparency, high sealing integrity, and scratch-free surfaces.
Adhesive used: UV-curable adhesive
Equipment configuration: Second Intelligent benchtop dispensing machine + high-resolution CCD vision positioning + 21G precision plastic-hub needle.
Laryngeal tube and laryngeal mask sealing
Process requirements: Well-controlled adhesive flow for multi-angle conformity.
Adhesive used: UV adhesive
Equipment configuration: Piezoelectric jet valve + adhesive cartridge heating + thermostatic nozzle system (or the Second Intelligent five-axis dispensing machine with a rotating head).
Medical tubing bonding and catheter connector dispensing
Process requirements: Uniform atomization or high-speed fluid jetting.
Adhesive used: UV adhesive, HY-168 silicone
Equipment configuration: Spray valve / pneumatic valve + UV curing lamp set + 16GTT needle + 0.6 mm split nozzle.
2. Implantable and High-Precision Medical Electronics (Pacemakers, Sensors)
Cardiac pacemaker housing sealing
Process requirements: The clearances between the transparent acrylic top cover, bottom cover, and housing are extremely small, requiring low viscosity and high bond strength.
Adhesive used: Low-viscosity UV adhesive
Equipment configuration: Multi-axis high-precision vision dispensing machine that applies one precise adhesive bead along the housing perimeter.
Miniature sensor assembly and dam-and-fill encapsulation
Process requirements: Adhesive width precisely controlled at 0.4 mm, with accurate cured dam dimensions (e.g., 11.6 × 11.6 × 2.2 mm).
Adhesive used: One-/two-component epoxy resin machine
Equipment configuration: Piezoelectric jet valve / 22GTT angled needle (0.15 MPa precision pneumatic control).
3. Medical Imaging and Diagnostic Equipment (Ultrasound Probes, MRI)
Dispensing/potting of ultrasound probe chips and transducers
Process requirements: Small-volume array dispensing, wear resistance, and strict proportional mixing of the two components.
Adhesive used: AB epoxy resin adhesive (2:1 mixing ratio)
Equipment configuration: Tungsten-carbide high-wear-resistance components + handheld capacitance/servo adhesive dispensing set + 18G/22G TT needles.
MRI housing sealing and thermally conductive potting
Process requirements: Gap filling for heat dissipation, high thermal conductivity, and bubble-free results.
Adhesive used: 1:1 epoxy structural adhesive, high-thermal-conductivity two-component potting compound
Equipment configuration: Second Intelligent two-component potting machine + servo-precise adhesive dispensing + inline vacuum degassing system.
4. In Vitro Diagnostics (IVD) and Micro-Volume Reagent Dispensing
Reagent magnetic bead dispensing and test strip spotting
Process requirements: Picoliter/microliter-scale ultra-low flow control with contamination prevention.
Medium used: Aqueous reagents, biological magnetic beads
Equipment configuration: Dedicated diaphragm valve / high-frequency piezoelectric valve + micro-flow controller.
Single-point protection of ceramic substrates
Medium used: Water-based paint
Equipment configuration: High-frequency piezoelectric jet valve for precise protection of critical substrate nodes.
5. Medical PCBA Coating and Protection
Conformal coating of PCB boards for ultrasound equipment
Process requirements: Precise masking of gold fingers, with coating thickness uniformly controlled at 50–90 μm.
Material used: Conformal coating, silicone
Equipment configuration: Second Intelligent inline conformal coating line / wide-field-of-view vision dispensing machine + vacuum chuck platform + vacuum spray valve.
6. Structural Bonding and Processing of Irregular-Shaped Parts
Dispensing into PE material grooves and micro irregular-shaped parts
Adhesive used: UV adhesive, two-component thermoplastic polymer
Equipment configuration: Second Intelligent five-axis coordinated dispensing machine + workpiece tilting and rotating fixture + 300 ml heated adhesive cartridge.
Integrated “dispensing + film lamination” for medical products
Equipment configuration: Customized combined dispensing and film lamination machine for fully automated assembly from adhesive application to film lamination.
7. Appearance Marking and Labeling of Medical Devices
Logo and marking-line color block filling: Multi-angle tilted dispensing on a five-axis machine, combined with dedicated inks for high-precision filling.
Hot-melt label bonding: Equipped with a hot-melt adhesive heating and spraying module for efficient bonding of internal and external labels on medical housings.
III. Quick Selection Guide for Second Intelligent Medical Dispensing/Potting Equipment
Application Requirement | Core Technical Challenge | Recommended Second Intelligent Equipment / Component Configuration |
Ultra-micro-volume / high-frequency dispensing (test strips, sensors) | Extremely small dispensed volume and high dispensing frequency | Piezoelectric jet valve + vision dispensing machine |
Dispensing along irregular / three-dimensional paths (laryngeal masks, grooves) | Requires multi-angle tilting and rotation | Five-axis coordinated vision dispensing machine |
Precise two-component mixing ratios (ultrasound probes, potting) | Strict mixing ratio requirements and bubble prevention | Servo-driven two-component potting machine + vacuum degassing system |
Automated production line (PCB coating, film lamination) | MES integration required; high throughput | Second Intelligent inline coating line / automated dispensing and film lamination machine |
IV. Conclusion
With high-precision fluid control, a diverse range of valve configurations (piezoelectric valves, spray valves, and needle valves), and flexible multi-axis coordinated motion capabilities, Second Intelligent dispensing and potting equipment fully covers production requirements ranging from micro-volume IVD reagent dispensing to advanced medical devices such as ECMO systems and ultrasound probes.
For customized dispensing process solutions, sample testing, or equipment quotations for your medical products, please contact the Second Intelligent technical service team.
