5G robot: Make orthopedic surgery “fast, accurate and stable”

Recently, Tian Wei, president of Beijing Jishuitan Hospital, successfully performed minimally invasive reduction and fixation for a patient with lumbar spondylolisthesis in Karamay Hospital, Xinjiang, 3,500 kilometers away, through 5G remote control technology and the use of the “Tianji” orthopaedic surgical Robot. Operation.

“Tianji” orthopedic surgery Robot is used for limb, pelvic fracture and full-segment (cervical, thoracic, lumbar, and sacral) surgery with an accuracy error of less than 1 mm, and its performance indicators and clinical effects have reached the world’s leading level. It is based on the multi-party cooperation of “production, learning, research, and medicine”: colleges and universities focus on basic common technology research to provide support for product development; hospitals are responsible for putting forward clinical needs and verifying clinical applications; Beijing Tianzhihang Medical Technology Co., Ltd. Co., Ltd. (hereinafter referred to as Tianzhihang Company) is responsible for breaking through the key technologies of product research and realizing the industrialization of scientific and technological achievements.

Innovative technology breaks through surgical problems

“Unlike superficial soft tissue, orthopedic surgery is more like operating in a hard obscure box, requiring precise positioning in deep three-dimensional space. There are many important neurovascular vessels in the deep part of the bone, especially in the spine. If it reaches the blood vessel, it will cause the patient to bleed heavily, and if it touches the nerve, it may lead to paralysis.” Tian Wei once summed up the three major problems of orthopedic surgery – invisible, inaccurate, and unstable. Invisible means that the human eye cannot see the internal structure; inaccurate means that the stability and operation accuracy of the human hand is not enough when driving the screw; unstable holding means that many factors will affect the stable performance of the doctor.

In the medical field, the spine and the pelvis and acetabulum have always been difficult “bones” in the orthopaedic surgery community. It has always been the most urgent need for orthopaedic surgeons to be able to capture the information of surgical instruments and patient poses in real time during surgery, to ensure that the doctor’s implant channel is correct, and to ensure the quality and effect of surgery. In traditional surgery, doctors can use X-rays to see bones through fluoroscopy, but plane X-rays cannot allow doctors to achieve accurate three-dimensional spatial positioning, and large radiation also increases the safety of surgery. At the same time, some medical robots can perform complex surgical operations through minimally invasive methods, but cannot see deep tissues and cannot be used in orthopaedic operations.

The “Tianji” orthopedic surgery Robot just solves the above problems. “The ‘Tianji’ orthopedic surgery robot system consists of a robotic arm host, an optical tracking system, and a main control trolley.” Relevant technicians from Tianzhihang introduced to the reporter of China Intellectual Property News. The optical tracking system monitors the depth of the musculoskeletal and every The operation link; the robotic arm is flexible and stable in operation, and can achieve sub-millimeter precision; and the robot’s brain, that is, the main control computer system, conveys the doctor’s treatment ideas to the above two devices to help the doctor plan the surgical path.

Taking pelvic fracture repair surgery as an example, the traditional surgical method is “open plate internal fixation surgery”, which not only has problems such as large anterior and posterior combined incisions, long operation time, and relatively large intraoperative blood loss, but also requires internal equipment during the operation. When multiple bone plates are inserted, the patient suffers more physical pain. In “Tianji”-assisted surgery, doctors can use “channel screw fixation” to accurately complete the placement of multiple screws. During the operation, the doctor designs the screw track on the computer screen, the system automatically calculates the spatial position of the screw track, and the robotic arm precisely positions the surgical tool to the surgical position, so that the doctor can easily complete the precise and safe implantation of the screw. Compared with “open plate internal fixation surgery”, “Tianji”-assisted surgery replaces the bone plate with screws and adopts a minimally invasive mode. The patient’s soft tissue damage is small, the surgical incision is small, the blood loss is small, the safety is high, and the recovery period is less. Shorter, while reducing the pain of surgery and improving the safety of surgery, it also reduces medical expenses. For patients with upper cervical spine disease, spinal deformity, spinal revision, pelvis and acetabulum and other patients who are difficult to insert screws in conventional operations, and some patients who are inconvenient to make multiple screw insertion attempts due to osteoporosis, robot-assisted surgery is undoubtedly the most suitable. good choice.

Deploy patents to build technical barriers

Tianzhihang, which has been committed to the industrialization of orthopedic robotic technology, has independently developed the orthopedic surgical robot “Tianji” after more than ten years, which has helped doctors break through the forbidden area of ​​cervical spine surgery and completed many operations that were once impossible.

However, all these achievements have not been smooth sailing. Since 2000, clinical experts and engineering experts have had a collision of ideas and started the scientific and technological exploration of orthopedic robots, which has laid the foundation for the birth of Tianzhihang. In order to transform laboratory and clinical research results into the market, Tianzhihang was established in 2005. In March 2009, the first generation of orthopedic surgical robots came out, but because of cumbersome operations, few indications and limited clinical effects, they were not favored by front-line doctors. In 2012, Tianzhihang launched the second-generation orthopaedic surgery robot, whose indications were extended from long bones to the pelvis, but it was still unable to perform more difficult spinal surgery. In the end, Tianzhihang has established a stable and efficient collaborative innovation team by establishing an innovative R&D system of “production, learning, research, and medicine”, gathering innovative resources in the field of medical robots, and relying on the “National and Local Joint Engineering Research Center for Medical Robots”. Beijing University of Aeronautics and Astronautics, Tsinghua University and other outstanding universities and research institutes at home and abroad, and clinical institutions such as Beijing Jishuitan Hospital and PLA General Hospital have cooperated extensively. After three arduous rounds of product upgrades, the “Tianji” orthopaedic surgical robot was born. stunning appearance.

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Published on 10/19/2022