Medical Device Assembly

Medical device assembly applications vary widely, but they typically involve bonding materials that are otherwise difficult to create adhesion, including plastics and metals. Certain substrates may even require the use of primers or other surface preparation in order to achieve satisfactory adhesion. In addition to bonding parts together successfully, medical device adhesives must be compatible with direct or indirect contact with the body and may be required to withstand multiple sterilizations.

Browse Our Medical Device Assembly Solutions

Medical Filter Potting

Media filtration systems play a significant role in pollution control by physically capturing pollutants and facilitating its absorption through chemical reactions. These systems are designed with specific media to target and remove particular pollutants.

Membrane separation - a crucial component in various filtration systems - relies on the careful selection of materials. These materials are chosen based on two critical factors that influence the effectiveness and longevity of the separation process:

• Pore Size Selection: One of the key determinants in membrane material choice is pore size, which directly impacts the filtration process. Smaller pore sizes prevent the passage of finer particles, enhancing the filtration efficiency. However, it's important to note that membrane "ripening" can occur over time, causing pore size reduction and a decrease in flow rate. This can lead to an element failure if the flux rate falls below the designed specification.
• Durability and Resilience: Membranes must withstand the conditions to which they are exposed during the filtration process. Their durability is paramount to ensure they continue to function effectively over time.

In medical separation applications, the choice of adhesive is of great importance. The selection process begins with a thorough examination of essential factors, including required certifications and bonding to the membrane and housing. These are considered critical to quality (CTQ) aspects that must be clearly identified and addressed.

Our team of experienced chemists and senior application engineers has exceptional expertise in medical potting applications. They are well-versed in the intricacies of the membranes employed for feed separation into the permeate. Their knowledge and skills are instrumental for ensuring the success of your medical separation projects.

Hollow Fiber Filter Adhesive Application

Static Potting

Potting is a straightforward process of pouring adhesive into the end of a hollow fiber filter. This adhesive serves a triple purpose: sealing the filter, anchoring the hollow fiber membranes securely, and directing all feed water through the fibers, rather than around them. Following the curing process, the filter is flipped, and the opposite side undergoes potting.

Centrifuge Potting

Certain companies opt for a centrifuge-based adhesive potting method, particularly prevalent in medical applications and with smaller filters. This centrifugal process enhances production efficiency by enabling simultaneous filling and curing of both ends of the filter.

Filter Trimming

After the adhesive has undergone curing, a crucial step involves the recutting of both ends of the filter to expose the hollow fiber openings. Additionally, this process allows for a thorough inspection of the cured adhesive to ensure top-notch quality assurance.

Choosing a medical filter adhesive is a vital decision that impacts filter quality and performance. With extensive experience and expertise in the filter potting market, H.B. Fuller understands your needs. As your partner, we align adhesive properties with filter requirements and manufacturing processes to ensure quality and reliability. Click here to view our Membrane Separation Product Selector Guide.

Browse Our Medical Filter Potting Solutions