As a manufacturer of mechanical core parts, TOK, Inc. offers many types of technical design. We particularly focus on the development of medical devices, providing support from design proposal to manufacturing. We will set specifications according to customer requirements. Please contact us to discuss how we can help you.
Process of medical devices
01 Inquiries Please contact us via form on our website. 02 Conduct an Interview Our staff will ask you about the details of your request. 03 Design Proposal Our technical team will discuss the design and make a proposal. 04 Prototype Evaluation Our technical team will manufacture and evaluate prototypes. 05 Commercialization Products are manufactured in our factory.
Example of medical device component usage
Meeting the Unique Demands of Medical Devices with Precision Engineering
> Why Choose TOK
Medical devices demand more than just precision—they require materials that resist chemical degradation, operate at quiet levels below 40 dB, and are assembled in cleanroom environments to ensure absolute hygiene. These are standards that go beyond those typically required in general industrial applications. At TOK, we address these specialized demands through fully customized designs tailored to each customer’s unique needs. With over 10,000 successful design cases, we offer comprehensive support from material selection and mechanical design to prototyping and mass production.
Whether you have a specific technical challenge or just a rough concept, we are here to help you develop components that truly work in real-world medical environments. Guided by our mission to create new motion, we strive to deliver innovative, functional solutions tailored to your needs. Let us know your application, and our team will be happy to provide technical proposals and share relevant case studies!
Non magnetic bearing (MRI)
Your Challenges
MRI's magnetism affects the operation of metal bearings.
Your Requests
We want a bearing with a desired shape that is not affected by the magnetic force of the equipment.
Our Solutions
We proposed a custom bearing using ceramic material, which is non-magnetic.
Base Product
Bearings | C Series
Reduce bearing noise (Tools for medical testing)
Your Challenges
The tool makes a loud operating noise when running.
Your Requests
We want to reduce noise from the bearings.
Our Solutions
We proposed noise-free bearings made by insert molding high-precision metal bearings with resin.
Base Product
Bearings | DT Series
Corrosion resistant bearing (Waterbed for rehabilitation)
Your Challenges
Bearings rust when used in water. Grease filled in bearings leaks into the water.
Your Requests
We want rust-free bearings that can be used in an underwater environment.
Our Solutions
We proposed bearings that are not filled with grease and use stainless steel internally for use in water, and furthermore, we proposed stainless steel bearings or rust-free resin bearings that utilize stainless steel.
Base Product
Bearings | S Series / DR-S Series
Soft close lid with rotary damper (Medical waste container)
Your Challenges
The lid makes a loud impact sound when it closes with a bang.
Your Requests
We want the lid to close slowly to eliminate the impact sound.
Our Solutions
We proposed a rotary damper that adds a soft closing function to the lid without compromising the existing external appearance of the medical waste container.
Base Product
Rotary damper | TD99 Series
Improve the function of infant incubator with rotary dampers
Your Challenges
The hood covering the entire incubator closes with great force, resulting in a loud impact sound and damage to the cover.
Your Requests
To improve the incubator's functionality, we want to install a rotary damper so that the hood closes slowly even when released.
Our Solutions
We proposed a custom rotary damper with an easy-to-install hinge shape that allows for 180° opening and closing.
Base Product
Rotary damper | TD38 Series
Rotary damper to reduce the momentum of the inhaler button
Your Challenges
When pressing the button on the inhaler to spray, pressing it quickly will cause the medicine to be sprayed forcefully.
Your Requests
We wanted to reduce the force of the inhaler button and adjust the amount of medication sprayed.
Our Solutions
We proposed a mechanism to reduce the force by using a rotary damper to slow down the spray action.
Base Product
Rotary damper | TD102 Series
Preventing paper jams in blood pressure monitor paper rolls
Your Challenges
When paper jams occur in the roll paper used for blood pressure monitor test results, it is difficult to remove the jammed paper.
Your Requests
We want to easily remove roll paper that has jammed inside the blood pressure monitor.
Our Solutions
We proposed a one-way clutch mechanism that allows the paper feed roller to rotate even when the blood pressure monitor itself is stopped.
Base Product
One-way clutch | TCM series
One-way clutch for precise chemical liquid dosing
Your Challenges
The amount of liquid dispensed with a single push varies.
Your Requests
We want to dispense a fixed amount of liquid while maintaining compatibility with gamma sterilization.
Our Solutions
We proposed a material that is compatible with gamma sterilization and achieves fixed-volume dispensing by suppressing backlash with a one-way clutch mechanism.
When attaching a dental scaler, overtightening can cause damage.
Your Requests
To prevent overtightening of dental scalers, we want to make it possible to spin freely when the set torque is exceeded.
Our Solutions
We proposed a torque wrench with a built-in torque limiter that spins freely when the set torque is exceeded.
Base Product
Torque limiter | TLD Series
Torque limiter prevents over-tightening of inspection fixtures
Your Challenges
When fixing the patient's test area for examination, the patient may move and interfere with the examination.
Your Requests
We want to fix the test area so that it would not move, but without tightening the fixing plate too much.
Our Solutions
We proposed a mechanism with a built-in torque limiter, we were able to fix the test area with a certain amount of force using the fixing plate, allowing for safe examination.
Base Product
Torque limiter | TLD Series
Increase the speed of height adjustment of the surgical instrument table/medical cart
Your Challenges
When raising and lowering the nurse cart, the speed is slow and it takes time to adjust the position.
Your Requests
We want to increase the speed when raising and lowering the nurse cart.
Our Solutions
We proposed a lifting mechanism that uses a reverse input cut-off clutch instead of a worm gear to increase the speed of raising and lowering.
Base Product
SR｜SR2/12 Series
Example of application development for medical devices
We introduce prototypes considered for development in R&D and products now on sale. Although TOK is not a medical equipment maker, TOK can provide parts for medical device.
The new urine cup holder is solution for the elderly people | Now on sale
We propose a urine cup holder that will not fail in urine analysis submissions. Features -Because of its shape, urine cups cannot be stacked. -It is a structure that prevents urine cups from being knocked over and a color that makes it easy to identify where to place them. -When lifting, the handles are positioned to consider the center of gravity, so this product is easy to carry. -This product can be disassembled for easy cleaning. -Barcode reading is possible without lifting the urine cup while it is in place. If you would like to purchase this product, please contact us through the contact page.
The new forceps definition are used to make delicate grasping without ratchet mechanism | Not for sale
The new mechanism replaces the ratchet mechanism, making it possible to fine adjustment the forceps without any restriction on the grasping angle. TOK hopes this technology is useful for artery forceps, grasping forceps, vascular forceps, hemostatic forceps, and variety types of forceps. It is a prototype created with our parts to verify the effectiveness of improving medical devices, and it is not for sale. The core of our development is the bi-directional no-back clutch (SR2 series).
Features -Only the handle can be operated to open and close the forceps, not a lever to unlock the ratchet. -Only the operating side (handle) can be used to adjust the angle of the gripping portion, not the gripping portion (forceps tip) itself.
Proposal for a new technology medical holding device | Not for sale
In order to improve workability, This holding device has a V-shaped design with no handles and does not get in the way when maintaining the open state. When closed, the product can be easily released with a light touch by turning a knob, which has a universal design. It is a prototype created with our parts to verify the effectiveness of improving medical devices, and it is not for sale. The core of our development is the bi-directional no-back clutch (SR12 series). Product Features -Without an operating handle, the compact V-shape makes it easy to hold and release. -You can open it with a light force and hold it at any angle. -Turning the knob releases the holding.
Handy tape dispenser for medical use | Not for sale
We propose a easy-to-use tape dispenser that can neatly cut various types of tapes with a single hand. It is a prototype created with our parts to verify the effectiveness of improving medical devices, and it is not for sale.
Features - This is a compact handy size tape cutter. - Can be operated with one hand - The cut end of the tape can be cut more smoothly than if it is cut by hand. - Tape of any material can be cut smoothly.
Process of medical devices
