Medical Technologies

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.

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® integrated seal and contact system

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

SCS Device Lead Interconnects

Next-gen Bal Conn® electrical contacts offer reduced axial pitch that affords for increased connector density.

Inline VAD Connections

The SYGNUS® implantable contact system enables simplified inline connection of the VAD pump to its power source, allowing replacement of a lead segment with reduced patient risk.

Bal Seal Medical Devices Ventricular Assist Device

Cardiac Lead
Interconnects

Bal Conn® electrical contacts meet IS-4 standards for pacing and defibrillation, providing a proven lead interface solution and helping surgeons reduce procedure times.

Cochlear Device Lead Interconnects

Bal Conn® electrical contacts in a high-density array, can help reduce header/ device size and boost functionality.

Bal Seal Medical Devices Cochlear Implant

Medical Tools & Equipment Applications

High-speed Surgical Saws

Bal Seal® spring-energized seals protect motors (>15,000 RPM) from potential damage caused by ingress of bone fragments, fluids and saline.

Spinal Fusion Devices

Bal Spring® canted coil springs allow for locking and unlocking of device parts with precisely controllable forces.

Atherectomy Drive Units

Bal Seal® spring-energized rotary seals protect catheter drive motors (>15,000 RPM) from damage caused by fluid ingress.

Tibial Trials

Bal Spring® canted coil springs mechanically latch trial shims used to accurately size large joint replacements.

Medical Industry Achievements

Shaping CHM Standards

As members of the CTF, 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.

Medical Achievements- 64% Size Reduction

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.