LiquoGuard® 7

CSF Management System

Automated CSF management instead of manual adjusted drainage

LiquoGuard® is the leading CSF management system that simultaneously measures CSF pressure and drains cerebrospinal fluid under controlled circumstances.

LiquoGuard® was designed to continually monitor for CSF drainage problems. It is a proactive system, unlike gravity-based drains which cannot actively monitor and detect issues. Our device will notify staff immediately when there is an occlusion, pressure discrepancies, catheter disconnections. This helps clinicians by knowing their external drain patients are being monitored closely and consistently - and only need to intervene when the device senses a problem with the drainage process. The system not only supervises the patient levels, but also supervises itself. Any inconsistency in the measured pressure leads to an alarm so that you will know immediately when a problem is detected.

Advantages Of LiquoGuard® Versus Gravity Drains: Gravity-based drip chambers are commonly used for external lumbar and ventricular drains, but are difficult to manage and fraught with problems, especially restrictions on movement and inadvertent "dumping" of CSF. Our automated CSF management technology, LiquoGuard®, is easy to program and manage, and eliminates many of the challenges associated with gravity-based drains.

There is now no need to:

  • level a transducer each time the patient moves
  • manipulate stopcocks
  • choose between measuring pressure or draining CSF
  • keep patient still while draining without risk of overdraining CSF


Handling mistakes are prevented, which greatly improves patient safety and leads to quicker recovery.

Vascular surgery and anestesiology

During vascular surgery intervention (e.g. TAA, TAAA) LiquoGuard® reliably monitors the pressure situation and the flow of CSF, documents the progression and helps detect situations that are harmful for the patient, early on. Also after an OP LiquoGuard® helps keep the intrathecal pressure at the desired level, or facilitates fast reaction to avoid neurological deficits or to counter them as quickly as possible. Typical application cases are:

  • Intraoperative neurological monitoring
  • Postoperative neurological monitoring
  • Pressure controlled CSF drainage

Neurosurgical, accident surgery and orthopedics

LiquoGuard® is traditionally used to control and adjust the cerebrospinal fluid pressure for continuous and regulated drainage, and for relief of acute high-pressure events (bleeding, edema, etc.).

Patients of any age, pediatric as well as geriatric, profit, and for medical personnel the effort associated with supporting and monitoring the drainage is reduced. Typical application cases are:

  • Ventricular drainage
  • Lumbar drainage
  • Pressure controlled drainage
  • Volume controlled drainage

Diagnostic and therapeutic support

Diagnosis of NPH (Normal Pressure Hydrocephalus) is difficult at times. LiquoGuard® supports you through the possibility of performing automated diagnostic procedures (Lumbar infusion test, Tap Test, Continuous lumbar drain, Continuous pressure monitoring).
In addition, LiquoGuard® is suitable for determining possible shunt settings and can depict and record the actual life conditions of the patient. The fact that LiquoGuard® offers mobile implementation due to battery operation, enables drainage volumes and target ICP to also be determined quickly, easily and safely in different positions (lying, sitting, standing, physical exertion, etc.), even over a longer period of time. Typical applications are:

  • Katzman Test (lumbar infusion for NPH diagnosis)
  • Determination of shunt opening pressures and possible suitable shunt settings
  • Control of shunt settings and functionality

Size (W x H x D) 239 mm x 145 mm x 213 mm
Weight 3,620 g
Voltage 100-240 VAC
Battery operation up to 2h
Pressure sensor Accuracy ± 0.375 mmHg
(range of 0-75 mmHg)
Drift <1 mmHg in long-term tests
Display accuracy ± 2 mmHg
Interfaces USB (Memory stick, printer), parenchymal sensor,
patient monitor

LiquoGuard® 7 Brochures


LiquoGuard® 7 Guides

What They Say About

LiquoGuard® 7

“CSF drainage has become a safe adjunct to our complex aortic repairs since we have started using routinely the LiquoGuard® 7 system. It is a mandatory tool in the armamentarium to prevent spinal cord ischaemia, and the very accurate monitoring of pressure and volumes reduces the risks associated with CSF drainage.”

Stephan Haulon, MD

Vascular Surgeon - Hopitalmarielannelongue, France

What They Say About

LiquoGuard® 7

“Cerebrospinal fluid drainage is strongly recommended as a spinal cord protective strategy in open and endovascular thoracic aortic repair for patients at high risk of spinal cord ischemic injury. Automatic drainage systems such as LiquoGuard® allow the speed and amount of cerebrospinal fluid drained to be programmed in a controlled and safe way according to cerebrospinal fluid pressure, and guarantee appropriate spinal perfusion.”

Vincente Riambau, MD

Chief Vascular Surgeon - Clinic Barcelona, Spain

What They Say About

LiquoGuard® 7

"In none of the over 50 cases, the LiquoGuard® system caused any complications. Neither any over drainage, nor any over drainage-related complication that required surgical treatment, occurred. The advantages became even more visible, the more uncooperative, restless or mobile a child was. Neither coughing, crying/screaming, unintended change of position, epileptic seizures or extreme mobility led to uncontrolled CSF losses."

Dr. med. Manfred Kudernatsch

Schoen-Klinik (Germany)

What They Say About

LiquoGuard® 7

"The patient quality of life improves so much. It is a no brainer. The pain that I went through on that old archaic system is unbelivable. To me, if I ran a hospital, it is a no brainer investment."

Jason Kerr


LiquoGuard® 7

in Action

Watch one of our explanation videos to see how an infusion test can be done with the LiquoGuard® to check the functionality of implanted shunts.


Stay Updated On CSF Management

We’re always trying to create helpful content for our neurosurgical clientele. Please contact us with any questions and/or comments you may have.

Stay updated with our latest blogs and articles

Stay updated with our latest blogs and articles

Read More
Journal Of Endovascular Therapy

Journal Of Endovascular Therapy

Read More
Journal Of Vascular Surgery

Journal Of Vascular Surgery

Read More

Contact us, if you want to learn more about our LiquoGuard 7