A medical adhesive is a specialized bonding material, either standalone or incorporated into a tape, designed for use in healthcare applications. These adhesives are intended to come into contact with human or animal tissue, biological fluids, or diagnostic samples. They are commonly used to secure medical devices to the body or as part of the device's construction. 

Medical adhesives differ from general-purpose adhesives in several key ways: 

• Biocompatibility: These adhesives are often evaluated for safety when in contact with skin, tissue, or biological materials like cells. 
• Reliability: They are built to endure exposure to moisture, movement, and sterilization processes, or are validated for typical medical bonding needs. 
• Versatile Use: Common applications include wound closure, surgical procedures, wearable health monitors, and assembling medical devices. 
• Controlled Manufacturing: Production typically occurs in facilities that follow rigorous quality standards, such as ISO 13485 or FDA 21 CFR Part 820. These environments often feature validated equipment, cleanroom conditions, traceable supply chains, and regular audits to ensure compliance. 

Before choosing a medical adhesive, it's important to conduct thorough testing to ensure it meets the demands of your application and complies with relevant safety standards. 

Safety and Biocompatibility 

Medical adhesives intended for contact with skin, tissue, or biological fluids should be evaluated for biocompatibility. Common assessments include: 

• Cytotoxicity: Ensures the adhesive does not harm cells 
• Sensitization and Irritation: Checks for allergic reactions or skin irritation 
• Systemic Toxicity: Evaluates potential harmful effects throughout the body 
• Hemocompatibility: Required for adhesives used in blood-contacting devices 

These tests are typically aligned with the ISO 10993 series of standards. 

Performance and Reliability 

To ensure the adhesive performs well in real-world conditions, consider testing for: 

• Bond strength and peel adhesion: Measures how securely the adhesive holds 
• Shear resistance: Assesses durability under stress 
• Sterilization compatibility: Verifies stability after exposure to methods like gamma radiation, ethylene oxide (EtO), or steam 
• Environmental resilience: Evaluates how the adhesive holds up against moisture, temperature changes, and aging 

Manufacturing Fit 

The adhesive must be compatible with your chosen materials and production processes. It should bond effectively to the substrates used and integrate smoothly into your manufacturing workflow. 

Medical adhesives used in healthcare applications must meet strict regulatory and quality requirements to ensure safety, effectiveness, and compliance with global standards.  

Key Regulatory Frameworks  

• FDA 21 CFR Part 820: This regulation outlines the current good manufacturing practices (CGMP) for medical devices in the U.S. It governs how devices are designed, manufactured, packaged, labeled, stored, and serviced to ensure they are safe and effective for human use. The FDA has recently aligned this regulation with ISO 13485 to streamline global compliance1.  
• ISO 13485: An internationally recognized standard for quality management systems specific to medical devices. It emphasizes risk management, process control, and regulatory compliance throughout the product lifecycle3.  
• ISO 10993: This series of standards provides guidance for evaluating the biocompatibility of medical device materials. It includes tests for cytotoxicity, sensitization, irritation, systemic toxicity, and hemocompatibility, especially for adhesives that come into contact with biological tissues or fluids.  
• Application-Specific Testing: Depending on the intended use, additional evaluations may be required, such as mechanical strength, optical clarity, or chemical resistance.  

Required Documentation  


To demonstrate compliance, manufacturers should maintain comprehensive records that include:  

• Detailed material specifications  
• Results from safety and performance testing  
• Certifications from suppliers  
• Documented manufacturing procedures  
• Design controls and process validation protocols  

These elements help ensure traceability, accountability, and readiness for audits or regulatory reviews.  

You would need a medical adhesive when:  

• Skin contact is required for accurate readings or sample collection.  
• Biocompatibility is essential to meet safety standards like ISO 10993 and FDA.  
• Secure but gentle adhesion is needed for comfort and reliability.  
• Wear time matters, whether for hours or days.  
• Sensitive users (e.g., pediatric or geriatric) need skin-friendly solutions.  
• Fluid control and microfluidics – adhesives can help define fluid pathways by sealing channels or controlling capillary action.  
• Layer bonding & device assembly – adhesives need to hold these layer together securely without interfering with fluid flow or test chemistry.  
• Structural integrity and precise alignment required for accurate results.  
• Anyplace in a device where inadvertent or peripheral skin contact could occur.  

Tapes and adhesives play a foundational role in medical device design because they: 

• Enable skin-device interface – securing sensors, electrodes, patches, and wearables. 
• Support miniaturization – allowing compact, flexible designs without mechanical fasteners. 
• Improve patient comfort – with breathable, soft, and conformable materials. 
• Ensure device reliability – by maintaining adhesion through movement, sweat, and environmental exposure. 
• Facilitate manufacturing – with materials that are compatible with converting and automation. 
• Allow customization – for different body locations, wear times, and user needs. 
• Designed not to interfere with patient monitoring or assay measurements 
• Designed from the start to consider needs for applications involving patients and use in medical devices 

Without the right adhesive solution, even the most advanced device can fail in real-world use. That’s why we work closely with OEMs to ensure adhesives are integrated early and effectively. 

Common Failures: 

• Adhesive failure: Poor bonding to substrate. 
• Cohesive failure: Adhesive breaks internally. 
• Contamination: Oils, dust, or silicone residues. 
• Improper mixing or curing: Especially with two-part adhesives. 
• Environmental stress: Moisture, temperature, or incompatible materials. 

Prevention Tips: 

• Clean and prepare surfaces properly. 
• Use correct mix ratios and curing conditions. 
• Choose adhesives compatible with substrates and sterilization methods. 
• Conduct thorough testing before deployment. 

Prototyping with adhesives early in the design process helps validate performance and user experience.

Here's how you can do it:

• Request sample rolls or sheets from your adhesive supplier to test in-house.
• Use die-cutting or hand-cutting tools to create basic shapes for skin adhesion trials.
• Conduct bench tests for peel strength, tack, and wear time using simulated skin or actual users.
• Partner with the adhesive supplier’s technical team to select materials based on device specs, wear time goals, and user demographics.
• Document findings to guide your converter when you're ready for scaled production.

Tip: Suppliers often offer prototyping kits or lab support to help you evaluate adhesives before committing to a converter.

Engaging an adhesive supplier early is critical for several reasons:

Why it's important:

• Material expertise – Suppliers understand adhesive chemistries and can recommend options tailored to your device's needs.
• Regulatory guidance – They help ensure biocompatibility and compliance with ISO, FDA, or MDR standards.
• Performance optimization – Adhesive selection affects wear time, comfort, and device reliability.
• Cost efficiency – Early collaboration avoids costly redesigns or material changes later.

When to engage:

• During concept development – To align adhesive properties with device goals.
• Before clinical trials – To ensure adhesives meet safety and performance standards.
• When scaling production – To optimize converting processes and supply chain logistics.
• If facing performance issues – Such as poor adhesion, skin irritation, or short wear time.

Best practice:  Involve your adhesive supplier as a strategic partner, not just a vendor. Their input can accelerate development and improve outcomes.