Medical Springs for Healthcare Applications
Building life-saving healthcare technology requires high-quality precision springs for medical devices and auto-injectors. Medical-grade springs allow for controlled movement and positioning in industry devices. Product longevity as well as patient safety and care are enhanced through the materials used, precise engineering, and quality control.
At John Evans’ Sons (JES), we take pride in manufacturing custom springs for healthcare equipment, meeting the highest standards for the medical device industry.
How John Evans’ Serves the Medical Device Industry
- Surgical And Diagnostic Tools
- Laboratory Instrumentation
- Wearable And Implantable Devices
- Delivery Devices
- Auto-Injectors
- Patient Stretchers and Transport Chairs

Given the critical nature of the healthcare industry, it’s of the utmost importance that all medical devices be precisely constructed for reliable, lasting performance.
Safety is key for ensuring that the health of medical professionals and their patients is not jeopardized. Stringent industry standards oversee the safety and efficacy of not only the finished device but also its components. At JES, it’s our goal to create innovative components that will enhance patient care and deliver failure-free functionality.
Applications
Medical springs are crucial to life-saving devices like surgical staplers, inhalers, and implantable devices, ensuring precise functionality and reliability. Their high-performance materials and precision engineering enable consistent force, durability, and biocompatibility for critical healthcare applications.
Types of Springs
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Constant Force Springs
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Spiral Torsion
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Power Springs
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Custom Mechanical Assemblies
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Wire Forms
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Stampings /Flat Springs
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Helical Springs
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Spring Reels
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Shock & Vibration Isolators
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Torsion Leaf Springs
Constant Force Springs
- Surgical and Medical Devices
- Retractors and Surgical Tools – Used in instruments requiring controlled movement, such as self-retaining retractors.
- Orthopedic Bracing – Provide consistent tension in orthopedic devices for rehabilitation and support.
- Medical Imaging and Diagnostic Equipment
- CT and MRI Machines – Used in counterbalancing systems for smooth positioning of imaging components.
- X-ray Equipment – Help adjust and maintain positioning in overhead suspension systems.
- Delivery Devices
- Auto-Injectors and Insulin Pumps – Ensure controlled dispensing of medication over time.
- Infusion Pumps – Provide constant pressure for IV fluid or medication delivery.
- Patient Support and Rehabilitation
- Hospital Beds and Mobility Aids – Help adjust bed positioning smoothly.
- Physical Therapy Machines – Used in resistance training and rehabilitation devices for controlled force application.
- Robotics and Prosthetics
- Exoskeletons and Robotic Assist Devices – Help provide smooth, natural movement and resistance.
- Prosthetic Limbs – Used in joint mechanisms to replicate human motion with steady force.
Spiral Torsion
- Surgical and Medical Instruments
- Surgical Staplers – Provides the necessary torque for smooth deployment of staples in surgeries.
- Endoscopic and Laparoscopic Tools – Assists in controlled articulation and movement of minimally invasive surgical instruments.
- Retractors – Used in self-retaining surgical retractors to maintain consistent tension.
- Drug Delivery and Diagnostic Equipment
- Auto-Injectors – Controls the rotational force needed for accurate medication injection.
- Blood Analyzers and Diagnostic Devices – Helps with precise component movement for sample processing.
- Rehabilitation and Assistive Devices
- Prosthetics and Orthotics – Used in joint mechanisms for controlled motion and energy return.
- Physical Therapy Equipment – Provides resistance and controlled movement for rehabilitation exercises.
- Imaging and Patient Support Systems
- CT and MRI Positioning Systems – Helps with smooth and controlled rotation of imaging components.
- Adjustable Hospital Bed Mechanisms – Assists in smooth reclining and positioning adjustments.
- Robotics and Wearable Medical Technology
- Powered Exoskeletons – Used in joints for controlled rotational assistance.
- Wearable Rehabilitation Devices – Provides precise torque for movement assistance.
Power Springs
- Surgical and Medical Instruments
- Surgical Staplers – Ensure smooth and consistent force for deploying staples in medical procedures.
- Laparoscopic and Endoscopic Tools – Provide controlled torque for precise movement in minimally invasive surgery.
- Drug Delivery Systems
- Auto-Injectors and Insulin Pumps – Ensure accurate and controlled delivery of medication.
- Infusion Pumps – Provide continuous, regulated force for IV fluid or medication delivery.
- Rehabilitation and Assistive Devices
- Prosthetic Limbs – Assist with controlled movement and energy return for natural motion.
- Exoskeletons and Wearable Rehabilitation Devices – Used in joint mechanisms to provide consistent torque for assisted mobility.
- Medical Imaging and Diagnostic Equipment
- X-ray and MRI Machine Positioning – Help control movement and recoil in imaging systems.
- Blood Analyzers and Diagnostic Devices – Ensure precise movement of internal components.
- Patient Support and Mobility Aids
- Adjustable Hospital Beds and Wheelchairs – Provide smooth movement for reclining and position adjustments.
- Patient Lifts and Mobility Assist Devices – Help with controlled lifting and lowering motions.
Custom Mechanical Assemblies
- Surgical and Medical Instruments
- Surgical Staplers and Suturing Devices – Incorporate springs and precision components for smooth, reliable operation.
- Endoscopic and Laparoscopic Tools – Provide controlled movement for minimally invasive procedures.
- Self-Retaining Retractors – Ensure consistent tension for hands-free surgical assistance.
- Drug Delivery and Infusion Systems
- Auto-Injectors and Insulin Pumps – Use custom spring assemblies for precise medication dispensing.
- IV Infusion Pumps – Regulate fluid flow with consistent force for accurate delivery.
- Medical Imaging and Diagnostic Equipment
- X-ray and MRI Machine Positioning – Help control movement and counterbalance components.
- Blood Analyzers and Lab Automation – Ensure precise sample handling and mechanical actuation.
- Prosthetics, Orthotics, and Rehabilitation Devices
- Powered Exoskeletons – Assist with joint motion and energy return.
- Prosthetic Limbs – Provide controlled movement and torque for natural motion.
- Physical Therapy Equipment – Enable adjustable resistance and force control for rehabilitation.
- Patient Support and Mobility Devices
- Hospital Beds and Adjustable Chairs – Allow for smooth reclining and positioning.
- Patient Lifts and Mobility Aids – Provide controlled force for lifting and lowering.
- Wearable Medical Technology
- Smart Orthotics and Braces – Help with assisted movement and posture correction.
- Compression Therapy Devices – Use mechanical assemblies to apply consistent pressure for circulation improvement.
Wire Forms
- Surgical and Medical Instruments
- Guidewires for Catheters and Endoscopic Tools – Provide flexibility and control for minimally invasive procedures.
- Surgical Clips and Staples – Used for wound closure and internal fixation.
- Self-Retaining Retractors – Maintain consistent tension to hold incisions open during surgery.
- Diagnostic and Imaging Equipment
- X-ray and MRI Machine Components – Help position and secure moving parts.
- Blood Analyzers and Laboratory Automation – Used for sample handling and precise component movement.
- Drug Delivery and Infusion Systems
- Auto-Injectors and Insulin Pumps – Used in actuation mechanisms for accurate medication dispensing.
- Infusion Pump Springs – Ensure smooth, regulated flow of fluids.
- Orthopedic, Prosthetic, and Rehabilitation Devices
- Braces and Orthotic Supports – Provide structural integrity and controlled movement.
- Prosthetic Limb Components – Help with joint articulation and controlled motion.
- Physical Therapy Equipment – Used in resistance training and rehabilitation devices.
- Patient Support and Mobility Aids
- Hospital Bed Adjustments – Used in mechanisms for reclining and positioning.
- Wheelchair Components – Provide structural support and assist with motion.
- Patient Lifts and Transfer Devices – Help with controlled lifting and stabilization.
- Wearable and Implantable Medical Devices
- Hearing Aids – Used in retention clips and battery contacts.
- Stents and Vascular Implants – Provide structural support in arteries and veins.
- Dental Orthodontics (Braces, Retainers, and Archwires) – Provide controlled force for tooth movement.
Stampings /Flat Springs
- Surgical and Medical Instruments
- Surgical Staplers and Forceps – Provide controlled spring force for reliable operation.
- Endoscopic and Laparoscopic Instruments – Assist in articulation and controlled movement.
- Self-Retaining Retractors – Maintain tension to keep surgical sites open.
- Drug Delivery and Infusion Systems
- Auto-Injectors and Insulin Pumps – Ensure precise force for consistent medication dispensing.
- IV Infusion Pumps – Regulate fluid flow through controlled tension mechanisms.
- Diagnostic and Imaging Equipment
- X-ray and MRI Machine Components – Help with controlled positioning and stabilization.
- Blood Analyzers and Lab Automation – Ensure precise movement of internal mechanisms.
- Prosthetics, Orthotics, and Rehabilitation Devices
- Braces and Orthopedic Supports – Provide structural support and controlled flexibility.
- Prosthetic Limb Mechanisms – Used in joints for smooth movement and controlled resistance.
- Physical Therapy Devices – Provide adjustable resistance for rehabilitation exercises.
- Patient Support and Mobility Aids
- Hospital Bed Adjustments – Help with smooth reclining and position changes.
- Wheelchair Components – Support folding mechanisms and controlled movement.
- Patient Lifts and Transfer Devices – Provide stability and controlled motion.
- Wearable and Implantable Medical Devices
- Hearing Aids – Used in battery contacts and retention clips.
- Dental Orthodontics (Braces and Retainers) – Provide controlled force for tooth alignment.
- Surgical Implants and Stents – Ensure biocompatibility and durability.
Helical Springs
- Surgical and Medical Instruments
- Surgical Staplers and Forceps – Provide controlled force for smooth operation.
- Laparoscopic and Endoscopic Tools – Ensure precise movement and articulation.
- Self-Retaining Retractors – Maintain consistent tension to keep surgical sites open.
- Drug Delivery and Infusion Systems
- Auto-Injectors and Insulin Pumps – Regulate medication dispensing.
- Infusion Pumps – Ensure controlled flow of fluids through consistent force application.
- Diagnostic and Imaging Equipment
- X-ray and MRI Machines – Assist in positioning and counterbalancing components.
- Blood Analyzers and Lab Automation – Provide reliable movement and actuation of internal mechanisms.
- Prosthetics, Orthotics, and Rehabilitation Devices
- Prosthetic Limb Joints – Provide controlled rotation for natural motion.
- Braces and Orthopedic Supports – Offer resistance and flexibility.
- Physical Therapy Equipment – Provide adjustable resistance for rehabilitation exercises.
- Patient Support and Mobility Aids
- Hospital Beds and Reclining Chairs – Enable smooth movement.
- Wheelchair Components – Provide suspension and support for comfortable mobility.
- Patient Lifts and Transfer Devices – Assist with controlled lifting and lowering motions.
- Wearable and Implantable Medical Devices
- Hearing Aids – Ensure secure battery contact and internal movement.
- Dental Orthodontics (Braces and Retainers) – Use precision springs to apply gradual force.
- Surgical Implants – Help in specialized implant mechanisms.
Spring Reels
- Surgical and Medical Instruments
- Surgical Light Positioning Systems – Enable smooth, adjustable movement of overhead lights.
- Endoscopic and Laparoscopic Tools – Help with cable and tubing management for precise control.
- Self-Retracting Medical Cords – Ensure organized and tangle-free power or instrument cables.
- Patient Handling and Support Systems
- Hospital Bed Adjustments – Assist with height and position changes.
- Patient Lifts and Transfer Devices – Provide controlled retraction for lifting mechanisms.
- Wheelchair and Mobility Aid Retractable Cables – Help manage power cords and safety harnesses.
- Diagnostic and Imaging Equipment
- X-ray and MRI Machine Cable Management – Prevent tangling and allows for smooth extension/retraction of cords.
- Blood Analyzers and Lab Automation – Manage tubing and wire retraction for efficient operation.
- Drug Delivery and Infusion Systems
- Infusion Pump Retractable Tubing – Help maintain organized and consistent fluid delivery.
- Auto-Injector Mechanisms – Use constant force for precise medication dispensing.
- Rehabilitation and Assistive Devices
- Prosthetics and Exoskeletons – Help with cable tensioning for controlled movement.
- Physical Therapy Resistance Equipment – Provide adjustable, retractable resistance for rehabilitation exercises.
Shock & Vibration Isolators
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Medical Imaging and Diagnostic Equipment
- MRI, CT, and X-ray Machines – Reduce vibrations from moving parts, improving imaging accuracy.
- Ultrasound Machines – Minimize external vibrations for clearer imaging and precise diagnostics.
- Blood Analyzers and Laboratory Automation – Reduce noise and motion interference, ensuring accurate sample analysis.
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Surgical and Medical Instruments
- Robotic Surgical Systems – Stabilize equipment for high-precision procedures.
- Sensitive Surgical Tools – Reduce transmitted vibrations that could affect delicate operations.
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Patient Handling and Support Systems
- Hospital Beds and Operating Tables – Provide smooth, controlled motion, enhancing patient comfort.
- Wheelchairs and Mobility Aids – Absorb shocks to improve stability and user comfort.
- Ambulance Stretcher Mounts – Reduce vibrations during patient transport for better care.
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Laboratory and Pharmaceutical Equipment
- Centrifuges and Spectrometers – Stabilize machines for precise testing and analysis.
- Bioreactors and Incubators – Minimize vibrations that could impact sensitive biological processes.
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Prosthetics and Rehabilitation Devices
- Powered Exoskeletons and Prosthetic Limbs – Help absorb impact and provide smoother motion.
- Physical Therapy Machines – Reduce unwanted vibrations to improve rehabilitation effectiveness.
- Critical Care and Life-Support Systems
- Ventilators and Infusion Pumps – Ensure consistent, accurate operation.
- ECG and Patient Monitoring Systems – Reduce interference for precise readings and diagnostics.
Torsion Leaf Springs
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Orthopedic Braces and Prosthetics
- Knee, Ankle, and Wrist Braces – Provide controlled rotational resistance, aiding in joint stabilization and rehabilitation.
- Prosthetic Limbs – Enhance movement by offering smooth, controlled torque for natural motion.
- Exoskeletons – Assist mobility-impaired patients by supporting joint motion with regulated force.
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Surgical and Medical Instruments
- Robotic-Assisted Surgical Tools – Ensure precision by providing controlled torque and resistance in mechanical movements.
- Handheld Surgical Tools – Improve accuracy by reducing unintended movements during delicate procedures.
- Endoscopic Devices – Assist in flexible articulation for minimally invasive surgeries.
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Rehabilitation and Therapy Equipment
- Physical Therapy Machines – Generate controlled resistance for muscle-strengthening exercises.
- Assistive Motion Devices – Help in regaining motor function by providing gradual rotational force.
- Orthotic Devices – Support controlled motion for injury recovery and muscle training.
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Medical Robotics and Exoskeletons
- Wearable Rehabilitation Exoskeletons – Provide torque assistance for walking and limb movement.
- Robotic Prosthetics – Enhance movement with smooth, controlled resistance.
- Automated Patient Lifting Systems – Assist in safe and ergonomic movement of patients.
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Medical Imaging and Diagnostic Equipment
- MRI, CT, and X-ray Machines – Support mechanical positioning components for precise adjustments.
- Ultrasound Scanning Devices – Help stabilize probes for accurate imaging.
- Automated Lab Equipment – Ensure smooth mechanical movement for accurate sample handling.
Micro Springs
Benefits of Springs for Medical Devices
Springs for life-saving devices deliver a host of benefits for medical equipment; they support longer life cycles in healthcare equipment and enhance patient care.
Precision Control
- Increased Control Over Movement
- Tension
- Compression
This is particularly beneficial for devices like syringes and insulin pumps when delivering exact volumes of fluids or medications.
Energy Storage & Release
- Storing and Releasing Energy
- Turning Potential Energy into Movement
- Force
- Dependable Performance
This is pivotal for components like surgical instrumentation and diagnostic tools.
- Greater Flexibility in Design
- Good Fit for Compact Tools and Components
Despite their small size, springs still provide significant force output.
- Increase Device Longevity
- Withstand Failure from Fatigue
At JES, we use our precision manufacturing capabilities coupled with high-grade materials to deliver durable springs that will perform reliably in healthcare devices.
- Safer for Use
Compression springs, for example, help ensure proper dosing in infusion pumps, and needle assemblies with extension springs safeguard against unintentional puncturing.
- Precision Movement
- Shock Absorption
- Counterbalancing
These springs support surgical instruments, implants, and much more. Versatile medical springs are compatible with diverse healthcare device applications.
- Stringent Standards
- Equipment Must Be Accurate
- Function As Expected
- Deliver the Best Care
Our medical springs comply with the specifications of related industry regulations. The medical industry follows strictly enforced quality and safety regulations to protect patients and caregivers.
Performance Considerations
For medical technology spring solutions to capitalize on the above benefits, it’s important for device manufacturers to choose the right spring for each specific application. This ensures consistent, reliable performance that protects patient safety. In the healthcare industry, choosing the wrong option for even the smallest components means the difference between life and death.
A spring must be strong enough to withstand fatigue, high temperatures, corrosive substances, and sterilization processes. The ideal spring for your device will also depend on its intended load.
Safety considerations should be crafted right into a medical spring’s design. Precision manufacturing is key, with designs factoring in proper dimensional tolerances and load-bearing capacities. They shouldn’t allow for any twisting or bending that might hinder their performance. Selecting strong, biocompatible, and hygienic materials that won’t degrade is also incredibly important.
Materials
View MaterialsIndustry Experience & Certifications
Our medical springs are backed by 175 years of industry expertise. Since our founding in 1850, we have continued our dedication to quality, precision, efficiency, and safety. We hold several certifications as evidence of that commitment to excellence, upholding the standards of ISO 9001:2015, ISO 13485:2016, and AS9100.
The International Organization for Standardization developed standard, ISO 13485:2016, which is most relevant to our medical device customers. This is the standard on which our quality management system is based. ISO 13485 governs medical device quality, safety, dependability, and consistency. It encompasses a product’s design, production, and installation to ensure manufacturers meet the highest industry standards for safe patient care.

Product Resources
Your Medical Spring Manufacturing Partner
The John Evans’ Sons engineering department looks forward to discussing your spring requirements, including any device or equipment challenge. We are here to help ensure your design specifications are accurate and complete, reducing research and development costs and lead time. Oftentimes, one of our standard stock springs will work for your assembly, eliminating the need for a custom spring and offering a faster solution. Our sales department is ready to provide more information on John Evans’ Sons’ stock and custom springs. Our quality assurance team tests at every stage of manufacturing to ensure customers’ requirements are met. Our inspection capabilities are world-class in the spring industry. We provide outstanding customer service from development through manufacturing and shipment of your parts. We’re not just a spring manufacturer; we’re your partner.
Request a quote today to get started on your medical spring project.
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