Tuohy Needle for Epidural Anaesthesia: Tip Design, Stylet and OEM Options
In epidural anaesthesia, a Tuohy epidural needle provides the access path through which an epidural catheter is introduced. Its curved tip, matched stylet, shaft markings and hub orientation therefore need to work together as one controlled needle system.
The Tuohy needle for epidural anaesthesia from Mekon combines a curved distal profile with matched stylet options, visible depth marks, colour-coded hub recognition, sterile single-use configurations and project-specific supply options. These visible features depend on repeatable control of the needle tube, bevel, stylet fit and hub assembly.
01 Why Tuohy Needle Design Differs from a Straight Needle
A Tuohy needle is designed to establish epidural access for catheter insertion. Unlike a conventional straight-bevel puncture needle, it uses a characteristic curved distal profile developed around the requirements of catheter placement.
Product handling depends on more than gauge and effective length. Tip geometry, bevel finishing, stylet matching, shaft markings and hub orientation all influence how the needle is recognized, prepared and controlled during placement.
02 Tip Geometry and Catheter Exit Direction
The curved Tuohy tip helps establish the direction in which the epidural catheter exits the needle. The distal opening must be formed and finished consistently because the catheter passes through the cannula and across this area during insertion.
A smooth bevel and controlled edge condition help support catheter passage across the needle opening. The transparent hub, fixed wings and depth marks complement the distal design by helping the user identify orientation, observe the connection area and support awareness of insertion depth during preparation and placement.
03 Why Stylet Matching Matters
A Tuohy needle with stylet uses a precision-matched stylet to close the distal opening during insertion. This helps reduce the possibility of tissue coring while maintaining the intended assembled tip profile.
The relationship between the stylet tip, cannula opening and curved bevel must remain controlled. If the stylet sits too far forward, too far back or out of alignment, the distal profile of the assembled needle can change. For this reason, stylet matching is both a component-design issue and a manufacturing-control issue.
- Stylet tip position — needs to remain aligned with the distal cannula profile
- Cannula opening — should remain smooth and consistent around the catheter exit area
- Key-and-slot orientation — helps maintain the intended relationship between stylet and needle
- Colour-coded hub — supports gauge recognition within the product line
04 Manufacturing Controls Behind a Consistent Tuohy Needle
Tuohy needle consistency depends on repeatable control of the needle tube, curved tip profile, stylet fit, cannula straightness, depth marking and hub assembly. Small variations in one area can change the relationship between the distal opening, stylet and catheter path.
Mekon combines needle tube processing, precision tip grinding, component matching, marking, assembly, cleaning, packaging and sterilization support. Reviewing these elements as one complete device helps transfer the approved sample design into repeat production.
05 Supporting Tuohy Needle and Anaesthesia Product Programs
For distributors and medical device brands, a Tuohy epidural needle may be supplied as an individual sterile device or developed as part of a broader anaesthesia needle portfolio. During product development, the needle, stylet, hub, markings and catheter interface may need to be reviewed together. Packaging, sterilization, branding and destination-market documentation can then be addressed according to the selected project configuration.
Mekon manufactures medical needles under an ISO 13485 quality management system. For each Tuohy needle project, the applicable certificates and technical documentation are confirmed according to the selected product configuration and destination market.
Customers developing a broader anaesthesia product portfolio may also explore Mekon’s related anaesthesia needle products, including spinal needles and combined epidural-spinal solutions.