BOLT, DRILL and Accessories for Neuromonitoring Implantation and Technical Measurement Accessories

RAUMEDIC offers various accessories for the application of all catheters in the NEUROVENT family. In addition to accessories that are used directly for implanting the catheter, RAUMEDIC also offers the cables that are needed to transfer the measured parameters from the catheter to the hospital’s patient monitors.

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For the application of the catheter it is necessary to pass through the calvaria using a drill and a suitable DRILL bit. The DRILL bit size is selected to match the diameter of the BOLT screw.

The DRILL bit is disposable and is for single use only as bone is dense and will cause the DRILL bit to become dull. If the DRILL bit is dull, the friction creates high temperatures and will lead to thermal damage in the bone, which will negatively affect the healing of the bone.

The DRILL KIT matches the diameter of the BOLT screw and is offered for parenchyma and ventricular catheters. Each DRILL KIT comes with an Allen key to adjust the depth of the stopper on the DRILL.


To safely position the measuring catheter, a BOLT is screwed into the drilled hole. A Screwing in tool is used to fix the BOLT in the skull creating a tight seal. The catheter is also firmly secured into the BOLT with the help of a flexible sealing cap. This way, the catheter is provided with a certain strain relief to protect it from damage caused by the patient's movements.



The BOLT KIT PTO 2L is a 2 lumen BOLT, which provides secure positioning of the NEUROVENT-PTO 2L BOLT and microdialysis catheters through a single access port.

A Screwing in tool is used to position the BOLT into the skull creating a tight seal. Because of the low height and the flexible lumens above the bone screw the BOLT KIT PTO 2L is ideally suited for clinical applications.

Spliceable Tunneling Sleeve

As an alternative to the safe positioning of the intracranial catheters, a tunnel can be created below the scalp. With the help of the Spliceable Tunneling Sleeve, the catheter is pulled through the tunnel then the sleeve is spliced and removed leaving the catheter in place. The subcutaneous tissue surrounds the catheter very tightly; however it creates a more significant surgical trauma than the BOLT. The Spliceable Tunneling Sleeve is available in two versions: CH8 for parenchyma catheters and CH12 for ventricular catheters.

Connection Cable ICP-TEMP-Cable and ICP-TEMP-Adapter

Depending on which catheter is implanted different cables are available to directly connect to the temperature and pressure ports on the patient monitors. These connection cables interface with all commonly used patient monitors. For transferring the ICP (intracranial pressure) to the patient monitor, the ICP-TEMP-Cable is required; which serves as an extension from the catheter to the patient monitor. For transferring the temperature parameter, the ICP-TEMP-Adapter is required (Philips/HP monitor requires a specific ICP-TEMP-Adapter).

Zero-Point Simulator NPS2

The Zero-Point Simulator NPS2 is attached directly to the invasive blood pressure (IBP) port of the patient monitor. All RAUMEDIC catheters are calibrated in the manufacturing process to eliminate possible errors that can occur when zeroing the catheter. The Zero-Point Simulator NPS2 is used to transfer the 'zero' to the patient monitor.

NPS3 Mobile Transport Unit

The NPS3 is a battery operated device for continued portable pressure measurement while the patient is being transferred. The ICP-TEMP-Cable can quickly and easily be disconnected from the NPS2 and connected to NPS3.

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