Background and Identification
The Integra LICOX CMP is a brain tissue oxygen monitoring system made by Integra NeuroSciences, a subdivision of Integra LifeSciences. Integra LifeSciences sells a range of medical devices for orthopedics, neurosurgery, and reconstructive and general surgery.
The Integra LICOX CMP is designed to continuously monitor brain oxygen partial pressure (PtO2) in brain tissue and cerebrospinal fluid. The device also monitors intracranial temperature. It can be used for patients with brain injuries or cerebrovascular events. The monitor provides clinicians with early warnings of potential hypoxic events. The LICOX CMP model is sold in bolted (model IM3STEU) or tunneled (model IT2EU) versions.
The Integra LICOX CMP monitor is not designed for blood gas monitoring. Catheter microprobes are implanted directly into the patient’s brain tissue and are connected to the LICOX CMP monitor using an electrical cable. For oxygen sensing, the catheter uses an electrochemical micro-cell. The separate temperature catheter uses a type K thermocouple to measure intracranial temperature.
The temperature and oxygen pressure data recorded by the LICOX system can be sent to patient monitors for processing, storage, and display. The LICOX CMP can also be used as a stand-alone monitor that displays oxygen pressure measurements.
The Integra LICOX CMP monitor is housed in a beige or grey plastic case. The name “Integra NeuroSciences” is printed in capital letters above the device’s display. “LICOX CMP” is printed underneath the display.
Technical Specifications
Instrument type: LICOX CMP
Principle:
- pbtO2 measurement: polarographic electrochemical sensor
- Temperature measurement: Type K thermocouple
- Displayed values update rate: once per second
Preamplifier:
* For pbtO2 probe: current amplifier, input 0 - 5000 nA, resolution 0.2 nA
- For temperature probe: voltage amplifier, input 0 - 4 mV, resolution 4 μV
Outputs: LICOX CMP, type AC3 master instrument:
- Analog outputs: 0 -10 V, smallest increment 0.24 mV, 150 W impedance
- Connectors for both pbtO2 and temperature signals
- Resolution:
- 10 mV/mmHg for pbtO2 (10V = 1000 mmHg)
- 100 mV/°C for temperature signal (10V = 100 °C)
Display: Alphanumeric LCD
- pbtO2:0.0 - 1999 mmHg
- Temperature: 0.0 - 99.9 °C
- Text to explain operation and parameters used
Calibration: Calibration data for the pbtO2 sensor is provided to the LICOX CMP instrument via a smart card. Temperature probes are tested/selected during manufacture by comparison to reference temperature values. The pbtO2 and temperature channels of the CMPmonitor are calibrated during it’s manufacture.
Accuracy in Long-term Operation: Accuracy determined during continuous pbtO2 measurement at 37°C:
- pbtO2 0–20mm Hg: ± 2mmHg
- pbtO2 20–50mm Hg: ± 10%
- pbtO2 50–150mm Hg: ± 12%
- Temperature: ± 0.2°C
- Duration of Use: 5 days maximum
Power supply/Power Consumption:
- Use only original LICOX CMP power supply (REF:A10)
- Power supply output: 7.5 VDC, 1.7 A
- Building power supply output: 120 V AC, 50 - 60 Hz
Main Fuse: 500 mA, slow-blow-fuse
Protection against electrical shock: Class II, Type CF applied parts: pO2 catheter, temperature catheter
Protection against harmful ingress of water: ordinary
Degree of safety in the presence of flammable anesthetics mixture with air or with oxygen or nitrous oxide: not suitable for use in the presence of flammable anesthetic mixture with air or with oxygen or nitrous oxide
Mode of operation: continuous
Operating Limits:
- temperature: +10 to 40°C
- pressure: 700hPa to 1060 hPa
- humidity: 30% to 75% RH non condensing
Shipping/storage Limits:
- temperature: 0 to +50°C
- pressure: 500hPa to 1060 hPa
- humidity: 0% to 95% RH non condensing
Dimensions and Weight: 34 cm (breadth) x 32 cm (width) x 8.5 cm (height), 4200 g (net weight)
Language: English