Manufacture of microsurgical instruments such as forceps, biopsy forceps and vascular clamps made of stainless steel and titanium
Günter Stoffel Medizintechnik GmbH
78573 Wurmlingen (Tuttlingen), GermanyNew on Amplifa
About INSTO
Günter Stoffel Medizintechnik GmbH (INSTO) is a specialized manufacturer and contract manufacturer of microsurgical instruments based in Wurmlingen near Tuttlingen. Since 1971, the company has produced round-handle instruments, forceps, biopsy forceps, vascular clamps and ENT forceps for hand surgery, microsurgery and ENT surgery. The value chain includes automated CNC milling (3- and 5-axis), Swiss-type turning of Ø 0.5 to 14.0 mm, laser welding, electron beam welding, an in-house hardening process with Vickers and HRC hardness testing, ultra-short-pulse laser marking including UDI code, and its own titanium coloring system. High-grade stainless steel alloys and titanium are used, which withstand repeated sterilization cycles without loss of performance. Components are manufactured with a fineness of down to 0.2 mm. Since 2024, INSTO has operated exclusively as a manufacturer and specialized contract manufacturer; custom model manufacturing runs under the name ALL THE WAY MICRO.
- Site
- Wurmlingen
- Processes
- CNC milling (automated, 3- and 5-axis), CNC turning (Swiss-type turning), Laser welding, Electron beam welding, Laser marking (ultra-short pulse, incl. UDI code), In-house hardening process (heat treatment), Hardness testing (Vickers), Hardness testing per HRC (Rockwell)
- Materials
- Stainless steel alloys (high-grade stainless steel), Titanium, High-grade stainless steel alloys, In-house hardening process (heat treatment), Laser welding, Electron beam welding, Ultra-short-pulse laser marking, Titanium coloring
- Certificates
- Quality certification by notified body DQS, FDA contract manufacturer listing, DQS quality certification (notified body), FDA listing as contract manufacturer
- Founded
- 1971
- Industries
- Medical technology, Microsurgery, Hand surgery, ENT surgery
- 01
Engineering / custom model manufacturing (ALL THE WAY MICRO)
- 02
CNC milling (3- and 5-axis, automated)
- 03
CNC Swiss-type turning
- 04
Laser welding / electron beam welding
- 05
Heat treatment / in-house hardening process
- 06
Surface treatment (titanium coloring, laser marking incl. UDI code)
- 07
Assembly of microsurgical instruments
- 08
Quality control (tip measurement, balance, hardness testing)
Materials & Processes
High-grade stainless steel alloys
Strength and resistance to repeated sterilization; base material of the microsurgical instruments.
Titanium
Lightweight, strong material for instruments; own titanium coloring system for surface treatment since 2022.
In-house hardening process (heat treatment)
Independent SOLO hardening system for strength and abrasion resistance of stainless steel instruments.
Laser welding
Joining process for fine instrument components, in-house since 1992.
Electron beam welding
Precision joining process for microsurgical components.
Ultra-short-pulse laser marking
Individual marking including UDI code according to customer requirements.
Titanium coloring
Own system for surface coloring of titanium components.
Locations
Wurmlingen (Tuttlingen)
DEProduction and administration
- Materials
- Stainless steel alloys, titanium
- 4× DMG 5-axis milling machines (2 automated)
- DMG turn-mill center
- 2× 3-axis CNC milling machines
- STAR Micronics Swiss-type lathes (Ø 0.5–14.0 mm)
- SOLO hardening system
- Vickers hardness tester
- Laser welding machine
- Ultra-short-pulse laser marking system
- Titanium coloring system
Instruments & Components
Inside the production
Industries
Processes & technical limits
| Processes | Tolerance | Max. part | Weight | Lot size | Materials |
|---|---|---|---|---|---|
| CNC milling (automated, 3- and 5-axis)Machining | – | – | – | – | Stainless steel alloys, Titanium |
| CNC turning (Swiss-type turning)Machining | – | – | – | Ø 0.5 mm – Ø 14.00 mm | – |
| Laser weldingJoining | – | – | – | – | – |
| Electron beam weldingJoining | – | – | – | – | – |
| Laser marking (ultra-short pulse, incl. UDI code)Surface | – | – | – | – | – |
| In-house hardening process (heat treatment)Heat treatment | – | – | – | – | high-grade stainless steel |
| Hardness testing (Vickers)Testing | – | – | – | – | – |
| Hardness testing per HRC (Rockwell)Testing | – | – | – | – | – |
| Titanium coloringSurface | – | – | – | – | Titanium |
| Manufacture of microsurgical instruments (forceps, biopsy forceps, vascular clamps, pliers)Assembly | – | – | – | – | Stainless steel alloys, Titanium |
| Custom model manufacturing (contract manufacturing)Engineering | – | – | – | – | – |
9 Anlagen & Maschinen
| Machine | Manufacturer / model | Quantity | Working area | Year built | Site |
|---|---|---|---|---|---|
| 3-axis CNC milling machine | – | 2 | – | – | Wurmlingen |
| Swiss-type CNC automatic lathe | STAR Micronics | 1 | Ø 0.5 mm to Ø 14.00 mm | 2016 | Wurmlingen |
| 5-axis milling machines (DMG, partially automated) | DMG MORI | 4 | – | 2020 | Wurmlingen |
| SOLO hardening system | SOLO | 1 | – | 1985 | Wurmlingen |
| Vickers hardness tester | – | 1 | – | 1985 | Wurmlingen |
| Laser welding machine | – | 1 | – | 1992 | Wurmlingen |
| Ultra-short-pulse laser marking system | – | 1 | – | 2021 | Wurmlingen |
| Titanium coloring system | – | 1 | – | 2022 | Wurmlingen |
| DMG turn-mill center | DMG MORI | 1 | – | 2025 | Wurmlingen |
Additional services
Quality & Certification
Every instrument undergoes rigorous quality control with tests for tip measurement, balance and consistency. Hardness is tested in-house by Vickers and HRC (Rockwell) hardness testing; initial certification was carried out in 1995 by the notified body DQS.
| Evidence | Wurmlingen |
|---|---|
| DQS quality certification (notified body) | |
| FDA listing as contract manufacturer |