Bonding of Endoscopes

Dual curing Vitralit® adhesives are ideal for bonding lens stacks as well as attaching glass and rod lenses in endoscopes. High strength bonds are formed between glass and metal components that offer biocompatibility, good chemical resistance, and minimal shrinkage. Their high glass transition temperatures ensure operating stability and reliability. These adhesives are compatible with all common sterilization processes.

Hoenle adhesives are suitable for bonding rod lenses in endoscopes as well as for potting light guides

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Medical Grade Adhesives brochure

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	Application Areas	Viscosity [mPas]	Base	Curing *	Special Properties
Structalit® 701	bonding surgical instruments endoscopes light guides	3,000-5,000	2-part epoxy	thermal	Transparent in thin layers long potlife fast curing certified to USP Class VI and ISO 10993-5 standards
Structalit® 5893	needle bonding plastic bonding	6,000-10,000 (Rheometer, 25°C, 10s^-1)	epoxy	thermal	Black color excellent flow properties filling material for frame&fill applications high resistance to heat and chemicals certified to ISO 10993-5 standards
Vitralit® 1655	Medical devices bonding Flexible potting Optics	150-300 (Brookfield LVT, 25 °C, Sp. 2/30 rpm)	epoxy	UV secondary heat cure	flexible certified to USP Class VI and ISO 10993-5 standards resistant to all common sterilization methods
Vitralit® 1702	Hose connections, blood filters	10-100	acrylate	UV	Transparent capillary flow biocompatible: certified to USP Class VI standards
Vitralit® 1703	Hose connections, blood filters	85,000-130,000 (LVT, 25 °C, Sp. 4/3 rpm)	acrylate	UV	Shear thinning Shape retaining Certified according to USP Class VI Resistant to sterilization
Vitralit® 4731	Bonding of flexible components; Attaching components on PCBs	900-1,500 (LVT, 25°C, Sp. 3/30 rpm)	acrylate	UV VIS	Dry surface after curing, biocompatible: certified to USP Class VI and ISO 10993-5 standards
Vitralit® E-4731	Bonding hose fittings, bonding housings	700-1,400 (LVT, 25°C, Sp. 3/30 rpm)	acrylate	UV VIS	Flexible, excellent adhesion to glass and plastics, dry surface, biocompatible: certified to USP Class VI and ISO 10993-5 standards, CMR-free
Vitralit® 5140	Sealing electrical assemblies, breathing masks	250-500	acrylate	UV VIS	Flexible, well suited for bonding plastics with low UV translucence and permeable to visible light, biocompatible: certified to USP Class VI standards
Vitralit® 6108	needle bonding bonding glass apparatus	600-900	acrylate	UV VIS secondary heat cure	non-yellowing excellent flow properties certified to USP Class VI and ISO 10933-5 standards
Vitralit® 6108 T	needle bonding bonding glass apparatus	3,000-6,000	acrylate	UV VIS secondary heat cure	non-yellowing excellent gap-filling certified to USP Class VI standards shear thinning
Vitralit® 7041	Needle bonding, bonding enclosures	50-90 (LVT 25°C, Sp. 2/60 rpm)	acrylate	UV VIS	Excellent adhesion to glass, plastics and metals; biocompatible: certified to USP Class VI standards
Vitralit® 7041 F	Needle bonding, bonding enclosures	50-90	acrylate	UV VIS	Fluorescing, excellent adhesion to glass, plastics and metals; biocompatible: certified to USP Class VI and ISO 10993/-4/-5 standards
Vitralit® 7041 T	Needle bonding, bonding dialysis filters	1,500-2,300	acrylate	UV VIS	High viscosity/stable, excellent adhesion to glass, plastics and metals; biocompatible: certified to USP Class VI and ISO 10993/-4/-5 standards
Vitralit® 7090 VHS	Bonding catheters, needle bonding	40-100	acrylate	UV VIS	Dry surface, very high adhesion to plastics, biocompatible: certified to USP Class VI standards
Vitralit® 7311 FO	Plastic bonding, glass bonding Suitable for large area bonding Suitable for applications with small gaps	40-70 (Newtonian liquid, Rheometer, 25 °C)	acrylate	UV VIS	Fluorescing orange Capillary flowing Resistant to moisture and alcohol Biocompatible, certified according to USP Class VI and ISO 10993-5/10 Resistant to sterilization
Vitralit® 7311 FO T	bonding plastics/glass bonding suitable for elastic bonding of large surfaces	1,000-3,000 (Rheometer, 25 °C, 10s^-1)	acrylate	UV VIS	Fluorescing orange High resistance to alcohols and moisture non-yellowing very high adhesion to plastics, glass and metals suitable for bonding large areas certified according to USP Class VI
Vitralit® 7311 FO Gel	plastics /glass bonding suitable for elastic bonding of large surfaces bonding of medical disposables	18,000-35,000 (Rheometer, 25 °C, 10s^-1)	acrylate	UV VIS	Fluorescing orange, shape retaining Resistant to humidity and alcohol Certified according to USP Class VI Resistant to sterilization
Vitralit® 7989	Plastic bonding, bonding containers	3,000-5,000	acrylate	UV	Excellent adhesion to plastics, especially to PC and PMMA; biocompatible: certified to USP Class VI standards
Vitralit® UV 4050	needle bonding plastic bonding	140-500 (LVT, 25°C, Sp. 2/30 rpm)	acrylate	UV VIS	Certified to ISO 10993-5 and USP Class VI standards modified acrylate impact resistant very fast curing very high adhesion to plastics
Vitralit® UV 7030	-	15,000-25,000 (Rheometer, 25 °C, 10s^-1)	acrylate	UV VIS	Flexible, high elongation at break, very high shear strength, certified according to USP Class VI
Cyanolit® 203 TX	Bonding hose unions, bridging large gaps, suitable for porous materials	shear thinning	cyanoacrylate	moisture, room temperature	Biocompatible: certified to USP Class VI standards
Cyanolit® 241 F	Plastic bonding, metal bonding	30-50	cyanoacrylate	moisture, room temperature	Instant adhesive plastic bonder perfect choice for mirror bonding
Cyanolit® 732 F	Bonding coloured plastics, delicate bonds	230-350 (LVT, 25 °C, Sp. 2/60 rpm)	cyanoacrylate	moisture, room temperature	Film forming, suitable for bonding porous materials, biocompatible: certified to USP Class VI standards
Elecolit® 323	Bonding of EP catheters	paste-like	2 component epoxy	thermal	electrically conductive (ICA) thermally conductive ISO 10993-5/-12 certified

*UV = 320 – 390 nm VIS = 405 nm

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Bonding of Endoscopes

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