The Spectrum triple signal Camera is able to show the live color image of the situation the surgeon is actually looking at. The natural image is overlaid with one of the two fluorescent images.
The prism technology makes it possible to look through one lens and via identical light paths see the object on three sensors.
This technology, core to the Quest products makes it possible:
- To combine the information from the three sensors in one image
- To combine without switching between visible and fluorescent images
- To overlay the separate images perfectly (max 1⁄4th of a pixel off)
- To move the camera without motion aberrations
The high quality images not only give the surgeon information that is undetectable with the human eye. By overlaying the fluorescent and natural images, he also knows exactly where the ‘invisible’ information is located on the operation table.
Depth of penetration in tissue depends on:
- The density of the tissue
- The brightness of the fluorophore used
- The amount of excitation light delivered by the light engine
- The distance between camera and tissue illuminated
- The wavelength of the fluorophore (e.g. 800nm is better than 700nm)
- The exposure time of the camera’s excitation sensor (the sensor which detects the fluorescent light emitted by the fluorophore).
The depth of penetration when ICG is used for visualisation is around one cm, but that distance is dependent on factors such as used probe, tissue type, light power and the distance between light source and tissue.
The speed of the camera allows for a flowing picture stream; video mode. The frame rate is dependent on the exposure time, longer expore times will result in lower frame rates but a higher sensitivity. The image resolution is High Defenition (HD).
The “NIR-Safe”” feedback mechanism protects surgeon and patient from unintended over-exposure with invisible NIR light. Based on our proprietary white light feedback mechanism, the combined Spectrum Camera/Media Center/Light Engine measures and adjusts the required NIR light irradiance. A safe excitation light intensity is obtained at all working distances (working distances may vary between 1.5 cm and more than 25 cm).
The camera in combination with the light engine defines the application of the system. Many customised configurations have already been realised. When your fluophore is not amongst the configurations underneath, please contact us.
Current versions available for:
ICG (Indo Cyanide Green)
Spectrum optics and draping
Laparoscopic surgery is being used more and more, because it has many advantages for the patient. It is however more challenging for the surgeon as sources of information are missing. The ability to feel the tissue is no longer there and the visual inspection must come from high quality cameras. The lack of feeling can be compensated by fluorophores, which can be used to identify vital structures such as urethras or bile ducts, or to identify the tumors that need to be taken out
The Quest Spectrum™ Platform combines a high image quality with the ability to see fluorescence. The fact that they are combined in one image is extra important with laparoscopic surgery, since the surgeon can no longer depend on the reference situation as with open surgery
Easily switch from the modus for minimal invasive surgery to open surgery
One of the main advantages of the Quest Spectrum™ Platform is its ability to easily switch from the modus for minimal invasive surgery to open surgery. If needed this can be done during surgery. Since the same camera is used with both kinds of surgery, all abilities of the camera will be the same when using either the laparoscope or the lens and ringlight.
Spectrum offers high quality broad-spectrum Laparoscopes and Lenses with:
- Magnetic /titanium focusing ring
- High optical fiber content for abundant excitation illumination
- Ring light for fast lens
- Apochromatic optics preventing chromatic aberrations in the 400nm – 1000nm range meeting all relevant international standards and test
Spectrum Lens & Ringlight
The lens is combined with a ringlight. The ringlight has an integrated light cable which is attached to the Light Engine and designed for the visualization of Near Infrared-Fluorescent markers.
Laparoscopes are available in two different configurations.
Draping and Autoclavability
Custom drapes have been developed to assure optimal fitting. Two sets of drapes are available. In both sets there is a drape for the arm in which the camera can be secured. The length of the arm will keep the trolley out of the sterile zone. In addition to the arm drape there is either a drape for:
The Lens and Ringlight combination. Both are fully covered by the special developed drape, as are the camera and cables.
The Laparoscope itself is autoclavable. The drape covers the base of the laparoscope as well as the camera and cables
Spectrum Light engine
The Light Engine has been developed to deliver the visual (VIS) and near infrared (NIR) light used in both the open and laparoscopic mode of the Quest Spectrum™ Platform. In both cases the Light Engine is connected with a light cable for either the ring light in open surgery or a light cable that attaches to the laparoscope.
Together with the camera, the Light Engine determines which fluorophores can be imaged. The LEDs and Lasers in the Light Engine deliver the light in the visible area and also the light that excites the fluorophore. The fluorescence that the fluorophore starts emitting when excited is picked up by the camera. The Light Engine is designed in a modular way. This makes it possible to build in other wavelengths or add more Watts (power).
Spectrum Capture Suite
The Spectrum Capture Suite is the image acquisition and manipulation program of the Spectrum Handheld System. With the Spectrum Capture Suite you can visualize real-time fluorescence signals and record the video data.
It can be used to perform multiple tasks simultaneously.
These tasks include, but are not limited to:
- viewing images from camera or file saving live image streams to files
- convert image files to other formats
- controlling the image acquisition processes of the Spectrum Handheld Camera
- control the settings of the Spectrum Light Engine.
Operator screen: In cooperation with surgeons around the world an optimal screen has been designed to be used during the surgery. Four images show both the raw data and the optimised overlay and fluorescence images.
With an easy mouse click:
- Patient information can be added for each patient
- The recorder allows the user to start, stop or pause recording of the raw camera images to file
- Annotations can be added to the video
- The light engine can be controlled and adjusted
- The camera’s exposure time and gain can be set
The Spectrum Trolley for Fluorescence Image-guided Surgery was drawn up in close cooperation with hospital specialists. Designed for easy use and compact installation of all the equipment. The Spectrum Trolley is made from the best quality materials that meet the highest demands for medical use.
The camera arm makes it possible to easily maneuver the camera in various positions. Once the optimal position for surgery is found the camera arm makes it possible to stabilise the camera in this position.
The length of the arm keeps the trolley outside the sterile zone.
The media center is the ‘computer’ that runs the Capture Suite software and which is connected with a bi-directional cable to the Spectrum Handheld Camera. The connection is based on glass fiber technology and enables fast transport and storage of up to 2 Terabytes of “raw”” data. The media center contains four fast hard disks, storing the valuable streamed recordings safely for evaluation and patient dossier.