Implantable Sensors - Solid State Pressure Transducer

Pressure Transducer Products
 

General Information

Since our founding in 1967, Konigsberg Instruments has developed a diverse mix of sensors that are designed to be permanently implanted within or around a variety of organs in order to facilitate many types of biometric monitoring and medical research.

These sensors are the preferred way to measure biological functions free of catheter whip, motion artifact, and especially the effects of anesthesia or confinement on the research subject. These instruments offer the highest quality dynamic data obtainable from any chronically implantable measuring device. Their use virtually eliminates the deleterious effects of pain and stress on the experimental results.

These sensors are purpose-built to the customer’s requirements. They will interface to most standard instrumentation amplifiers and to Konigsberg Instruments’ Biotelemetry encoders.


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Technical Specifications: Solid State Pressure Transducer

Since their introduction, nearly 40 years ago, Konigsberg Instruments’ pressure transducers have been accepted worldwide as the standard for chronic medical research. Designed specifically for biocompatibility and chronic implantation, continual product improvement has kept them at the forefront of technology. The design of these devices permits exceptional frequency response and sensitivity, especially when compared with gel-tipped or other canula designs. As true solid-state devices, frequency response and dynamic sensitivity do not degrade over time.

Contact Us for complete specifications or a quotation.

Available Sizes:

    • Catheter Tip (in mm Ø):
    • 2.5, 3.5, 4.0, 4.5, 5.0, 6.0, 6.5, and 7.0
    • Side Sensing Intra-Muscular (disc):
    • 5.0 mmØ, 2 mm thick,
    • Side Sensing Extra-Muscular (disc):
    • 7.3 mm Ø, 2 mm thick

Operating Ranges:

    • Applied Pressure:
    • ±300 mmHg
    • Operating Temperature:
    • 32 °C to 42 °C

Input / Output

    • Input Excitation:
    • 5 VDC Typical, 10 VAC RMS Max
    • Output Transfer Function:
    • 5 µV/V/mmHg (i.e., output at 5VDC excitation at 300 mmHg = 7.5 mV)
    • Linearity & Hyesteresis Error:
    • <1% Full Scale Reading, Best Straight Line Fit
    • Frequency Response:
    • >1,000 Hz (smaller transducers have higher frequency response)

Baseline Drift Ratings

    • Chronic Implant X6 Stability:
    • <3 mmHg / month
    • Acute Implant X4 Stability:
    • >3 mmHg / month, <7 mmHg / month
    • Acute Implant X2 Stability:
    • >7 mmHg / month, <15 mmHg / month
    • Temperature Error:
    • <1 mmHg / °C

Absolute Maximum Ratings

    • Ambient Pressure:
    • -300 mmHg to +600 mmHg
    • Ambient Temeprature:
    • 0 °C to 55 °C

Recommended Sterilization Method

    • Ethylene Oxide Gas:
    • Low Temperature / Low Pressure Cycle ONLY!
    • Process Pressure:
    • 0 mmHg to +600 mmHg (3 day outgas at ambient pressure)
    • Process Temperature:
    • 20 °C to maximum of 55 °C