I. From system integration to self-developed structure

In the surgical robot system, the mechanical arm has always been the most challenging part. It determines the sensitivity, compliance and control accuracy of the system, and also directly affects the trust of doctors.

Over the past decade, China's orthopedic robots have made remarkable progress in surgical procedure development, navigation fusion and image planning. However, the underlying capabilities of "motion execution" have long relied on imported components. The "Specialized Arm" launched this time starts anew from the mechanical requirements and operational logic of orthopedic surgery, achieving a comprehensive reconstruction in structural design, control algorithms and safety feedback, allowing "domestic" products to truly be defined from the movement itself.

This is not an accidental breakthrough but the result of continuous research and development accumulation.

At the recently concluded 8th China International Import Expo, the world's first all-orthopedic surgical robot covering five major surgical procedures including hip, knee, unicomicondyle, spine and trauma was showcased, achieving the collaborative capability of "one system and five surgical procedures".

From algorithms to hardware, from verification to clinical feedback, every product iteration is built on the self-evolution of the underlying technology.

This orthopedic specialized mechanical arm no longer relies on general industrial arms but redefines its structure based on the logic of surgical movements.

The core of it lies in endowing the machine with the ability to "understand the doctor's movements" - finding a balance between flexibility and rigidity, and achieving synergy between precision and safety.

When doctors push, pull or swing the robotic arm, what they feel is not resistance but a sense of being understood and cooperating - this is precisely the goal of this research and development.



II. From "Borrowing an Arm to Move Forward" to "Creating an arm through Technique"

This orthopedic specialized robotic arm does not merely add functions to a general structure but has completely redesigned a "skeleton" for orthopedic surgeries.

Its research and development concept originated from the mechanical reality of the operating room:

The high-precision zero-gravity compensation system enables doctors to experience a "stress-free" balance during pushing, pulling and swinging operations.

Compliant control and haptic feedback technology strike a balance between stiffness and sensitivity, making the response of the robotic arm more in line with human hand movements.

The dedicated configuration and low inertia design are suitable for multi-degree-of-freedom operations in complex orthopedic postures and confined Spaces.

The multi-layer safety control logic immediately brakes in the event of an unexpected collision to ensure intraoperative safety.

In clinical experience, this structural design enables the robotic arm to truly "understand movements like a human".

This dynamic balance between stability and flexibility enables doctors to experience smoothness and controllability during operations, and also transforms "compliant control" from an engineering concept into a clinical reality.

In the eyes of many doctors, such robotic arms are not merely hardware but the soul of the system - when robotic arms can be defined autonomously, the movement logic of robots is also redefined accordingly.





III. Clinical Value: Making surgeries more stable, accurate and safe

For surgeons, the value of surgical robots has never lie in "substitution", but in "stability".

In orthopedic surgery, this stability is related to prosthesis matching, bone preservation, and directly affects postoperative recovery and functional reconstruction. The orthopedic specialized mechanical arm mainly developed by us, with sub-millimeter positioning capability and high-precision servo control system, has pushed this stability to a new height.

At the level of precision and stability, the robotic arm achieves dynamic limitation of the bone surface plane through high-resolution sensors and multi-degree-of-freedom coordinated control. When doctors use a pendulum saw, the cutting can only move along the planned plane to complete controlled movements in the directions of inside and outside and depth, avoiding the risks of "uneven cutting" or "uneven depth" in the past.

The system's compliant control mechanism strikes a balance between rigidity and sensitivity, enabling the robotic arm to maintain smooth operational feedback even in complex postures. For doctors, this "ease of use" not only stems from mechanical performance but also from the alignment between the system and the logic of clinical movements.

In terms of safety, the system monitors the status at the arm end in real time. Once an unexpected collision or abnormal force feedback is detected, it will immediately and automatically stop operation. This "intelligent braking" mechanism is not only a mechanical safety protection but also a surgical partnership that builds trust. It enables doctors to focus more on the surgical area during high-risk operations rather than worrying about the equipment itself.

In clinical applications, the high-precision control and motion stability of robotic arms help reduce the loss of healthy bone mass, lower the risk of intraoperative bleeding and postoperative infection, and prevent excessive release of ligaments and muscles, thereby accelerating the recovery process of patients.

Meanwhile, the standardization of the system's operation logic also enables young doctors to master robot-assisted surgical techniques within a shorter learning period - a shorter learning curve means a higher popularization efficiency.

For grassroots hospitals, the emergence of this self-developed solution has endowed the high-precision and controllable orthopedic surgical model with more practical promotion potential, and also provided more patients with the opportunity to enjoy consistent diagnosis and treatment quality.

It is not only an innovation in tools, but also a part of the surgical trust system. When the doctor's intentions are integrated with the machine's movements, "stability" will truly become the starting point of the value of surgical robots.





IV. Industry Observation: The Watershed from "System Integration" to "Structural Self-research and Development"

Over the past decade, the progress of domestic orthopedic surgical robots has mainly focused on the development of surgical methods and clinical adaptation. The new round of competition is shifting towards self-research and development of system performance and structure.

In this generation of products, key technologies such as the control algorithm of the robotic arm, zero-gravity compensation, and haptic feedback have been overcome, and a true "custom closed loop" has been completed in an engineering manner.

This means that domestic orthopedic robots are evolving from "application integrators" to "bottom-level definers".



Conclusion

In the field of surgical robots, the significance of robotic arms has never been merely "structural components", but rather "language of motion".

From following to self-research and development, from module splicing to system reconfiguration, from algorithmic intelligence to structural autonomy.

This robotic arm, defined by the demands of orthopedic doctors and constructed by the engineering team,

It shows us that domestic surgical robots are moving towards a future that is "controllable, perceptible and reliable".