Universal Laser Marker for C-Arm Fluoroscopy Devices
C-arm fluoroscopy devices are frequently used in departments such as orthopedics, neurosurgery, urology, and algology, where real-time X-ray imaging is essential during surgeries and interventional procedures. These devices project real-time images on a screen by emitting radiation, similar to standard X-ray procedures. It is well-documented that prolonged radiation exposure can lead to various cancers, including blood and thyroid cancers.
Fluoroscopy devices are operated during surgeries by trained technicians. The alignment of the desired imaging area with the center of the fluoroscopy tube must be on the same plane, a process known as targeting. This task heavily depends on the technician’s expertise. If the fluoroscopy tube and the intended imaging area are not aligned, repeat imaging is required, increasing radiation exposure.
Medical staff exposed to continuous radiation during surgical procedures use protective gear such as lead glasses, thyroid shields, and lead aprons. However, due to the significant weight of these lead-based protective devices, mobility is restricted, making long surgeries particularly challenging. Consequently, these protective devices are often not used, leaving certain body parts, such as hands, exposed to radiation. Additionally, no protective equipment is available to shield patients from radiation during imaging. Each unnecessary exposure translates to avoidable radiation for both patients and medical staff.
I designed a laser marker, for which we have applied for a patent, to be compatible with all C-arm fluoroscopy devices with a 12-inch tube diameter. The device uses laser light to target the desired imaging area during surgery, enabling accurate imaging in a single attempt without relying on the technician’s expertise. By eliminating repeat imaging caused by targeting errors, the device reduces radiation exposure for both staff and patients. In our Phase 1 trials, we demonstrated that the C-arm fluoroscopy tube could accurately target the desired imaging area in one attempt, regardless of technician experience. Our findings were published in one of the 72 master journals listed in the medical literature.
During the testing phases, the patent file for the device was prepared on December 4, 2018, and submitted to the Turkish Patent Institute. On December 3, 2019, we filed international patent applications under the Patent Cooperation Treaty (PCT/TR2019/051021) in 170 countries. Additionally, the design won the gold medal for “Best Academic Invention” at the international competition held at Teknofest 2019.
In conclusion, this low-cost, domestically developed laser marker—compatible with all fluoroscopy devices with a 12-inch tube diameter—addresses both cost and compatibility issues. It performs the functions of high-cost, single-model laser markers. By increasing compatibility and reducing reliance on imported laser targeters, our device indirectly extends the lifespan of C-arm fluoroscopy devices, reducing maintenance costs and usage frequency.
The most innovative feature of our device is its universality. It is compatible with all C-arm fluoroscopy devices with a 12-inch tube diameter, regardless of brand or model. The device consists of three laser units arranged in a circle, intersecting at 90-degree angles: two red and one green laser. It also includes a rechargeable battery-powered control unit. The two red lasers mark the x and y coordinates of the desired area, while the green laser, a unique feature not found in similar devices, targets the z-coordinate, eliminating magnification issues during imaging.
Our laser marker solves cost and compatibility challenges, ultimately aiming to protect human health. Indirectly, it also extends the lifespan of expensive imported C-arm fluoroscopy devices, helping hospitals recover costs quickly and reduce expenses. It works much like a mobile phone case: while you may not be able to produce a high-tech mobile phone, creating a protective case can significantly extend its lifespan.