IntraSense In-vivo Sensor

IntraSense in-vivo pressure sensor

IntraSense size comparison

IntraSense size comparison

IntraSense evaluation kit

IntraSense evaluation kit

The IntraSense is an extremely small in-vivo pressure sensor for integration in catheters with only 1 French diameter. A highly flexible, fully protected cable is already connected to the sensor with dimensions of only 750 μm × 220 μm × 75 μm in order to make the use by the customer as easy as possible.

The absolute pressure sensor provides accurate and stable values in the range of -300 p to 500 mmHg. For special applications, the range can also be adjusted. The sensor is designed for operation in air and saline fluids such as blood, cerebral fluid or urine.

The IntraSense SMI-1B also provides a light-protected version of the silicon sensor. This allows applications with built-in lighting such as endoscopic use.

The calibrated version provides a fully temperature compensated pressure and temperature signal via a 5-pin connector. The accuracy is +/- 1.5% FS. Alternatively, an uncalibrated version with stripped cable ends (2 cm length) is available. Cable length and pressure range are customizable.


  • Standard cable length 60 or 180 cm
  • With / without light protection fo the sensor
  • Standard pressure range -300 mmHg to 500 mmHg
  • Customized pressure ranges and cable lengths


AMSYS also offers an evaluation kit for easy testing of the IntraSense. The pressure and temperature signals can be read via a USB interface using the free open-source Arduino software. The evaluation kit is available with two cable lengths (60 cm and 180 cm), with 5 sensors and in the normal as well as light-protected version. Its use is explained in the application note below.


  • 1-French diameter
  • Dimensions: 750μm × 220μm × 75μm
  • Pressure range: -300 to +500 mmHg (customizable)
  • cable already assembled; custom length
  • Available with light protection for endoscopic applications
  • Ready-for-use calibrated and compensated in the temperature range of 10 ° C to 70 ° C
  • Optionally uncalibrated
  • Overall error: +/- 1.5% FS
  • Evaluation Kit with software available for easy prototyping


  • Embolization
  • Atrial Ablation
  • Atherectomy
  • Resuscitative Balloon
  • Occlusion of the Aorta
  • Thermodilution
  • Microvascular Obstruction
  • Endoscopy
  • Intracranial Pressure
  • Fractional Flow Reserve (FFR)
  • Reproductive Health
  • Aortic Control
  • Compartment Syndrome
  • Endourology
  • Glaucoma
  • Cochlear Implant

Available Types

Evaluation kits for prototyping

Name IntraSense Length Sensors
INTRASENSE-1A-060-AP-5 standard 60cm 5
INTRASENSE-1A-180-AP-5 standard 180cm 5
INTRASENSE-1B-060-AP-5 light-shielded 60cm 5
INTRASENSE-1B-180-AP-5 light-shielded 180cm 5

Calibrated probes

Name Calibrated pressure range Compensated temperature range Supply voltage(V) Light shield
SMI-1A-48-xxx-BDAP -300 up to +500 mmHg 10° – 70°C 3,3 no
SMI-1B-48-xxx-BDAP -300 up to +500 mmHg 10° – 70°C 3,3 yes
SMI-1A-48-xxx-BDAR -300 up to +500 mmHg 10° – 70°C 5,0 no
SMI-1B-48-xxx-BDAR -300 up to +500 mmHg 10° – 70°C 5,0 yes

where ‘xxx’ is the cable length in cm.

Uncalibrated probes

Name Recommended pressure range Diameter of catheter Proximal termination Light shield
SMI-1A-48-xxx-BAUU -300 up to +500 mmHg 1 French 3 stripped wires no
SMI-1A-48-xxx-BBUU -300 up to +500 mmHg 1 French 4-Pin PCB no
SMI-1B-48-xxx-BAUU -300 up to +500 mmHg 1 French 3 stripped wires yes
SMI-1B-48-xxx-BBUU -300 up to +500 mmHg 1 French 4-Pin PCB yes

For information on prices and delivery times or if you have any technical questions, please contact