Announcement of the Results

We have officially launched the world's first fully customized two-way hinge tube platform called "CustomFlex," achieving a paradigm shift from standardized products to personalized solutions. The platform is based on patient CT/MRI data and surgical planning software and can generate personalized hinge tube design plans for special anatomical cases. Through an intelligent laser cutting system, the finished products can be delivered within 48 hours. Currently, the platform offers over 300 customization options, covering dimensions, stiffness, deflection plane, joint density, and surface functions. It has successfully been applied in complex urology, cardiovascular interventional, and neurointerventional surgeries and has improved the matching degree of the instruments with the patient's anatomy to 97%.

Research and Development Background Challenges

The one-size-fits-all standard couplings are unable to meet the diverse clinical needs: pediatric patients require designs with smaller diameters (less than 1mm) and greater flexibility; obese patients need longer lengths (more than 150cm) and stronger pushing forces; complex anatomical variations (such as horseshoe kidneys, spinal curvature) require special bending angles and rotation directions; different surgical procedures have vastly different requirements for the performance of the instruments - ureteroscopes need large-angle deflection, electrophysiological catheters need precise torque control, and biopsy forceps need high axial stiffness. A survey shows that 89% of interventional doctors indicate that the current selection of couplings is limited, and 62% have compromised their operations due to incompatible instruments during surgeries. For special cases, the problem of adapting standard instruments becomes more prominent, with an average increase of 35% in operation time and a 2.3-fold increase in complication risk.

Core Technological Innovation

1. Medical Imaging Intelligent Analysis and 3D Reconstruction Technology: Develop specialized algorithms to automatically extract target anatomical paths (such as ureters, blood vessels, and bile ducts) from CT/MRI data with an accuracy of 0.3mm. The algorithms identify key anatomical features: bending radius, twisting angle, branch position, lumen diameter, etc., and calculate the optimal instrument parameters based on finite element analysis. The system processes a patient's data in just 12 minutes and outputs 23 design parameters including instrument length, diameter, stiffness distribution, and deflection angle.
2. Parametric Intelligent Design Engine: Establish a parametric model with 127 design variables. Use multi-objective optimization algorithms to find the Pareto optimal solution. The optimization goals include: usability (minimum bending radius), maneuverability (relationship between deflection angle and force), visibility (inner lumen diameter), and durability (fatigue life). The algorithm can generate 3-5 optimized design schemes within 10 minutes for doctors to choose.
3. Flexible Manufacturing and Rapid Delivery System: Integrate intelligent laser cutting, robot polishing, and automatic inspection to achieve rapid production of small batches. From receiving the design file to delivering the finished product, the entire process can be completed within 48 hours. The minimum production batch size is reduced to 1 piece, and the single-piece cost is only 25% higher than batch production. The system supports two materials: medical-grade stainless steel and nickel-titanium alloy. The diameter range is 0.5-10mm, and the length range is 30-200cm.

Mechanism of Action

The core of customized solutions lies in "anatomical adaptability." In the dimension of size, the diameter and length of the instrument are precisely calculated based on the patient's anatomical data to avoid the predicament of "too large to pass through, too small to be stable"; in the dimension of mechanics, a stiffness gradient is designed based on the degree of path curvature, providing sufficient thrust in the straight sections and appropriate flexibility in the curved sections; in the dimension of kinematics, the deflection plane and angle are determined according to the position of the target area to ensure that the instrument can reach all target positions; in the dimension of ergonomics, the handle design and control method are customized according to the doctor's operating habits. For special cases such as ureteral stenosis, a more slender and gradually varying stiffness instrument can be designed to increase the success rate of passage; for cardiac valve intervention, a catheter with a specific curved shape can be designed to precisely reach the valve area.

Efficacy Verification

In a clinical study involving 127 complex cases, custom hinge tubes demonstrated significant advantages: in pediatric urological surgeries (patients aged 2-8 years), the success rate of the custom equipment increased from 71% to 98%; in percutaneous nephrolithotomy for obese patients (BMI > 40), the average operation time was shortened by 42 minutes (reducing by 28%); in complex arrhythmia ablation surgeries, the catheter positioning time was shortened by 35%, and the ablation success rate increased from 83% to 94%. Postoperative follow-up showed that the incidence of complications due to mismatched equipment (such as perforation, hematoma) decreased by 72%. Doctor satisfaction surveys indicated that 96% of surgeons believed that the custom equipment enhanced their confidence in the surgery and operational efficiency. Health economics analysis revealed that although the unit price of the custom equipment was 1.8 times higher, by shortening the operation time, reducing complications, and lowering the rate of conversion to open surgery, the total cost per single surgery was reduced by 22%.

Research and Development Strategy and Philosophy

We firmly believe that "the most suitable equipment is the best equipment," and we have developed the POP (Personalization - Optimization - Precision) design concept. At the individualization level, we have established the world's largest database of endovascular equipment usage, which includes performance data and clinical results of 15,000 surgeries; at the optimization level, we apply multi-objective genetic algorithms to find the optimal balance point under constraints such as functionality, maneuverability, and durability; at the precision level, we optimize the design based on the specific anatomical data of patients, using computational fluid dynamics and finite element analysis. We have established a digital closed loop of "design - simulation - manufacturing - verification," with virtual surgical simulation accuracy reaching 0.1mm, reducing the production of physical prototypes by 85%. At the same time, we implement an open design platform, allowing doctors to directly participate in the design through the cloud interface, choosing preset templates or custom parameters, achieving true collaborative innovation between medicine and engineering.

Future Outlook

Personalized medicine will drive the development of hinges in four directions: Firstly, 4D-printed intelligent devices that undergo preset deformations under body temperature conditions, adapting to anatomical changes during the operation; Secondly, bio-integration design, where specific extracellular matrix proteins are surface-modified to promote tissue healing; Thirdly, real-time adaptive devices, based on electroactive polymers, where surgeons can adjust the stiffness of the device through voltage regulation during the operation; Fourthly, fully biodegradable devices, suitable for pediatric patients, which will safely degrade within 6 months after the completion of the treatment. The "adaptive hinge tube" we are developing will enter clinical trials in 2026. This product is equipped with shape memory alloys and sensors, which can automatically adjust the bending angle according to the tissue impedance. In the longer term, "autonomous navigation devices based on artificial intelligence" will become a reality. The devices will be able to automatically find their way within the body based on pre-planned routes, with only key decision points requiring confirmation from the doctor, significantly reducing the difficulty and learning curve of the surgery, and benefiting more patients with minimally invasive treatment.