Bal Seal Engineering’s springs, seals, and contacts help improve the performance and reliability of powered surgical tools, orthopedic implants, pumps, monitors, active implantables, and other critical medical equipment. Our custom-engineered products enable designers to achieve higher speeds, longer service life, and more functionality in less space.
Why Choose Bal Seal for Medical Devices?
Medical device OEMs choose Bal Seal solutions to support miniaturization, biocompatibility, reliability, and precise mechanical or electrical performance in critical healthcare applications.
Implantable-Grade Materials
Bal Seal offers implantable and medical-grade material options for seals, contacts, and connector components used in long-life device applications.
Miniaturization & Integration
Our technologies support smaller device architectures and greater functionality in compact implantable and surgical systems.
Reliable Long-Term Performance
Engineered spring and connector technologies help maintain sealing and electrical performance through demanding lifecycle requirements.
Products for Medical
Bal Conn® Electrical Contact
Our Bal Conn® electrical contact is the solution of choice for designers seeking to ensure consistent connection in implantable devices used to deliver neuromodulation and cardiac therapies. Due to its redundant contact points, the Bal Conn offers very low contact resistance. Its canted coils provide excellent resistance to fatigue and more design flexibility than any other implantable device interconnect technology.
Product Features
- Implantable, precision-machined metal housings
- Low-force, low-resistance spring contact elements
- Redundant contact points for reliable connectivity
- Miniature contact diameters ( .9mm and smaller)
Bal Seal® Spring Energized Seal
Our seals are precision-machined from PTFE and other premium polymers, and they’re engineered to deliver longer service life and more equipment uptime. Their spring energizers ensure even, consistent wear, and their jacket materials can be customized to meet specific temperature, pressure, speed and chemical compatibility requirements.
Product Features
- Controllable friction forces
- Excellent media and temperature resistance
- Wear-regulating spring energizer
- FDA compliant
SYGNUS® Implantable Contact System
The world’s first integrated seal and contact system for active implantable devices, SYGNUS® combines reliable Bal Conn® electrical contact technology with proven implantable-grade silicone isolation seals, resulting in a connector “stack” that can accommodate lead diameters down to 0.7 mm. The system’s contact element consists of a housing made from medical-grade MP35N® and a platinum-iridium or MP35N® Bal Spring® canted coil spring.
Product Features
- Integrated contact/seal design
- Multi-point conductivity
- Smallest pitch in the industry (~2mm)
- FDA compliant
Bal Spring® Canted Coil Spring
Our spring mechanically fastens, conducts electricity, and shields sensitive electronics from EMI/RFI. Its independent coils, which serve as multiple contact points for optimal current carrying capability, ensure consistent, reliable connection—even under shock and vibration.
Product Features
- Superior conductivity & power density
- Compact, space-saving profile
- Multifunctional for lighter, simpler designs
- FDA compliant
Medical Active Implantable Applications
Medical Tools & Equipment Applications
Medical Device Sealing, Connecting & Spring Solutions
Bal Seal Engineering supports implantable, surgical, orthopedic, diagnostic, and robotic medical technologies with custom-engineered components.
Active Implantable Devices
Bal Conn® and SYGNUS® technologies support cardiac rhythm management, neuromodulation, and other implantable device architectures.
Powered Surgical Instruments
Spring-energized seals help protect moving components while maintaining low friction and reliable performance in high-cycle instrument designs.
Drug Delivery & Infusion
Custom sealing solutions support accuracy, reliability, and media compatibility in implantable and wearable fluid-delivery systems.
Orthopedic & Spinal Devices
Bal Spring® technologies support controlled deployment, retention, and reliable mechanical function in minimally invasive device platforms.
Diagnostics & Monitoring
Seal and spring technologies support fluid handling, connectivity, and mechanical reliability in monitoring and diagnostic equipment.
Robotic Surgery Systems
Low-friction sealing and precision spring solutions support robotic medical systems where accuracy, repeatability and contamination control are critical.
Medical Industry Achievements
Shaping Cardiac Standards
As members of an ISO connector task force, we helped to develop the cardiac IS-4 standard. We also contributed to IS-4 requirements for non-set screw connection systems.
Pioneering Therapies
When makers of the implantable alfapump® needed to boost battery life and guard against leakage, a Bal Seal® made it possible. Today, the device is helping ascites patients all over the world live more comfortably.
Making More Connections
Neuromodulation devices have been shrinking as demand for functionality grows. Our Bal Conn®, with its reduced axial pitch and sizes down to .020 in., lets designers build smaller devices that do more.
Medical Customer Successes
“With the addition of a Bal Seal® to our alfapump® design, we were able to reduce power consumption by 40% and extend battery life by 20%.”
Thomas Degen, CTO
Sequana Medical
“In the Minuteman®, the Bal Spring® enabled us to precisely control force when deploying the extension plates to lock and unlock the plunger.”
Douglas Snell, Engineering Director
Spinal Simplicity
“We considered flexure springs, screws, O-rings, and magnets. Ultimately, the Bal Spring® canted coil spring provided the functionality we needed.”
Bo Gao, Ph.D., R&D Manager, Knees
Exactech, Inc.
Medical Device FAQs
Bal Conn® is an implantable electrical contact technology, while SYGNUS® is an integrated connector system that combines electrical contacts with seal functionality in a validated architecture.
Yes. Bal Seal offers implantable and medical-grade material options for a range of sealing, spring, and connector applications.
Applications include active implantables, powered surgical instruments, orthopedic devices, drug delivery systems, diagnostics, and robotic surgical systems.
Yes. Bal Seal technologies are used specifically where smaller device size, increased channel count, and reliable long-term performance are important design goals.
Bal Seal materials and designs are selected based on application-specific environmental, lifecycle, and sterilization requirements to support reliable performance over time.
Yes. Bal Seal Engineering works with OEM teams to develop custom solutions for sealing, connectivity, conductivity, and mechanical retention challenges in medical device platforms.
Request Medical Device Engineering Support
Our engineering team can help evaluate materials, geometry, reliability, and integration needs for implantable, surgical, and diagnostic device applications.
Technical Resources
Industry Catalog
Application Bulletin
Material Data Sheet
What’s New?
Enhancing Precision: The Critical Role of Effective Sealing in...
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In neuromodulation devices, the role of electrical connectors is...
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The Bal Conn® electrical contact helps device makers...
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Designing smaller implantable neuromodulation devices with greater connector density...
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