Bonding of Endoscopes
In the manufacture of modern endoscopes, high-performance adhesives are crucial for reliable and durable bonds. Specialized adhesives for endoscope bonding enable precise joining of a wide variety of materials and meet high standards for durability, flexibility, and medical technology. Whether for bonding lenses, rod lenses, housings, or for potting optical fibers—the right adhesive solution from Hoenle plays a key role in ensuring the quality and functionality of medical endoscopes.
Key benefits of adhesives for endoscopes:
Hoenle adhesives provide reliable and high-precision bonding solutions for advanced endoscope manufacturing and optical assembly applications. Engineered for demanding medical and optical environments, these adhesives enable secure bonding of lens stacks, glass lenses, and rod lenses used in modern endoscopes.
The adhesives create high-strength bonds between glass and metal components, ensuring long-term mechanical stability and optical alignment. Thanks to their biocompatibility, excellent chemical resistance, and minimal shrinkage during curing, Vitralit® adhesives help maintain precision in delicate optical systems.
With high glass transition temperatures (Tg), these dual-curing adhesives deliver outstanding thermal stability and reliability, even under challenging operating conditions. They are fully compatible with all common medical sterilization methods, making them ideal for use in the production of medical devices and surgical instruments.
In addition to bonding lens stacks and rod lenses, Hoenle adhesives are also highly suitable for potting light guides in endoscopes, providing durable protection and consistent optical performance.
Hoenle adhesives are suitable both for bonding rod lenses in endoscopes and for potting optical fibers
Selection of our adhesives for precise endoscope bonding
In the following table you will find an overview of biocompatible adhesives from Hoenle that are suitable for the various bonding applications on endoscopes:
| Adhesive | Viscosity [mPas] | Base | Curing | Special Properties |
|---|---|---|---|---|
| 6,000-10,000 (Rheometer, 25°C, 10s^-1) | epoxy | thermal |
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| 3,000-5,000 | 2-part epoxy | thermal |
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| 200-400 (LVT, 25°C, Sp. 2/30 rpm) | epoxy | UV secondary heat cure |
|
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| 150-300 (Brookfield LVT, 25 °C, Sp. 2/30 rpm) | epoxy | UV secondary heat cure |
|
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| 50 (Kinexus Rheometer, 25 °C) Newtonian Fluid | Acrylate | UV/VIS |
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| 23,000 – 33,000 (Rheometer, 25 °C, 10s^-1) | epoxy-acrylate | UV / secondary heat cure |
|
*UV = 320 – 390 nm VIS = 405 nm
Our Bonding and Curing System Solutions
Hoenle provides complete adhesive bonding solutions for optimal production efficiency and productivity. Pairing Hoenle UV Medical grade adhesives with the appropriate Hoenle UV or LED curing system ensures that the adhesives are thoroughly cured in the shortest possible cycle time. Hoenle curing equipment offers a full range of curing wavelengths, adjustable intensities, and is cleanroom compatible. The equipment is programmable with full monitoring capability to maintain the highest level of process control.
Contact And Support
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