4mm sized CoCrMo screw-rod system meeting the specific orthopedic correction requirements for cervical spine deformities.

The cervical spine, the "vital passage" connecting the skull and torso, is vulnerable to congenital scoliosis, degenerative kyphosis, post-traumatic deformities and other conditions. These issues not only disrupt spinal alignment and physical appearance, but also may compress nerves and blood vessels, leading to limb dysfunction and even disability risks. A clinical study by Professor Liu Baoge from Beijing Tiantan Hospital shows that the postoperative disability rate of severe cervical deformities once reached as high as 43.2%, and still remains at 23.5% despite technological advancements. This clinical pain point places extremely high demands on cervical spine correction and fixation devices for precise adaptation, stable support, and minimally invasive safety. Geasure Medical’s 4.0mm CoCrMo Cervical Spine Correction Screw-Rod System is the core solution targeting this demand, and has become the clinical preferred choice for cervical deformity correction by virtue of optimized dimensions, structural synergy and material innovation.

I. Introduction: Core Demands for Cervical Deformity Correction and Technological Upgrades of Fixation Systems

1. Clinical Pain Points of Cervical Deformities: Millimeter Differences Determine Prognosis

The cervical spine has a complex anatomical structure, adjacent to critical tissues such as the cervical spinal cord and vertebral arteries, making deformity correction surgery a highly difficult orthopedic procedure. In a case of atlantoaxial dislocation reported by Southern Metropolis Daily, surgeons needed to complete osteotomy and reduction within a millimeter-level gap, and any slight deviation could damage blood vessels and the spinal cord. Cervical deformities such as congenital scoliosis and degenerative kyphosis not only require precise surgical correction, but also demand that fixation devices adapt to the narrow anatomical space of the cervical spine, while providing sufficient support strength to reduce the risks of postoperative complications and angle loss.

2. Core Breakthrough of Fixation Systems: 4.0mm Screw-Rod Resolves the Dilemma of Adaptation and Strength

Traditional spinal internal fixation systems feature fixation rods with a diameter of 5.0mm or more, which have poor adaptability to the pedicle spacing and spinal canal space of the cervical spine. They tend to irritate the surrounding soft tissues and even limit the development of minimally invasive surgery. In contrast, the cervical spine correction fixation system, centered on a 4.0mm fixation rod and paired with half-threaded pedicle screws, perfectly matches the anatomical characteristics of the cervical spine through precise dimension optimization. Meanwhile, relying on structural synergy design, it ensures fixation strength on the basis of lightweight construction, and accurately solves the dual challenges of "adaptability" and "stability" in cervical spine correction.

3. Value Empowerment by Geasure Medical: Full-Chain Strength Guards Clinical Application

As a global enterprise deeply engaged in orthopedic devices, Geasure Medical is a national-level specialized, sophisticated, and innovative "Little Giant" enterprise, holding 106 patents, 114 qualification certificates, and with a registered capital of RMB 170.885 million. The company integrates its full-chain advantages in R&D, production and quality control into the 4.0mm fixation rod system, which not only precisely meets the specific clinical needs of cervical deformity correction, but also guarantees product reliability and clinical value with stringent quality control and global service capabilities.

II. Geasure Medical: A Benchmark of Strength in Global Orthopedic Medical Devices

Founded in 2015, Geasure Medical is headquartered in the West Taihu Lake Science and Technology Industrial Park, Changzhou, China. With a factory area of approximately 30,000 square meters and a workforce of nearly 200 employees, it is an enterprise dedicated to the R&D, production, sales and global services of spinal orthopedic implants and surgical instruments.

1. Brand Positioning and Mission: Guarding Health to Become a Trusted Partner of Surgeons

With the core mission of "safeguarding human health and life safety", Geasure Medical deeply cultivates the field of spinal orthopedics and is committed to becoming a "trusted partner of orthopedic surgeons worldwide". Its product R&D has always been guided by clinical needs, focusing on solving surgical challenges for orthopedic surgeons and rehabilitation needs for patients.

2. Global Layout and Foundation: Integrated Ecology Radiates the Global Market

Geasure Medical has built an integrated industrial ecology of "R&D-Production-Sales-Service", with products exported to many countries and regions in Europe, Asia, the Americas and beyond. Relying on an efficient supply chain network and global warehousing layout, the company can quickly respond to order demands from global customers and achieve safe and timely delivery of products.

3. Core Values: Innovation as the Core, Quality as the Foundation

Adhering to the core values of "innovation-driven, quality-oriented, compliance-first, and customer-centric", Geasure Medical follows international standards and has obtained 26 Class III medical device certificates. Its independently developed spinal orthopedic products have passed a number of international authoritative certifications, making it a benchmark for orthopedic devices with both technological advancement and usage safety.

III. Four Core Strengths: Hard Support and Differentiated Advantages of Geasure Medical

The ability to create the 4.0mm CoCrMo Cervical Spine Correction Screw-Rod System as a core product stems from the in-depth support of Geasure Medical’s four core strengths, which also represent its differentiated competitive advantages in the orthopedic device industry.

(I) R&D and Innovation: Technological Tackling Focused on Clinical Pain Points

• Professional R&D Team Builds a Closed-Loop R&D System: Geasure Medical has joined forces with global orthopedic experts, material engineers and clinicians to build a closed-loop R&D system of "clinical demand-technological transformation-product iteration", deeply cultivating core technologies of spinal correction devices. In 2025, the company was also granted a number of invention patents including cervical spinous process fixation devices.
• Internationally Recognized Technological Achievements with Authoritative Endorsements: Two core products—the K223776 PEEK Spinal Fusion Cage and K222031 Thoracolumbar Pedicle Screw System—have successfully obtained FDA 510(k) certification, demonstrating that the company’s technological strength has been recognized by global authoritative institutions. At the same time, it has formed a number of core technology reserves in key fields such as thread design, dimension optimization and material compounding.
• Material and Process Innovation Balances Performance and Biocompatibility: The company prioritizes the use of high-performance biomaterials such as medical titanium alloy and CoCrMo alloy. The CoCrMo alloy strictly complies with the ASTM F75 specification, featuring high strength, excellent fatigue resistance and good biocompatibility. Integrating advanced processes such as precision CNC machining and plasma spraying, the devices not only meet the requirements of mechanical performance, but also reduce human rejection reactions.

(II) Lean Production: Ensuring Production Capacity and Quality Consistency

• Advanced Production System Combines Scale and Customization: Equipped with intelligent production lines and high-precision processing equipment, the company has large-scale production capacity to quickly respond to large-volume global orders. At the same time, it can flexibly undertake small-batch customized production to meet the personalized needs of different clinical scenarios.
• Full-Process Controllable Manufacturing with Standardization Guaranteeing Quality: From raw material cutting and precision processing to finished product assembly, standardized operating procedures (SOPs) have been established for each link. Relying on a 30,000-square-meter modern factory area, the company achieves full-process control of the production process to ensure that the dimensional accuracy and structural stability of each product meet the standards.
• Flexible Production Support Adapts to Diverse Cooperation Models: Supporting OEM/ODM cooperation models, the company can customize product specifications and process details according to customer needs, accurately adapting to clinical scenarios and brand demands in different regions, and providing flexible production solutions for global partners.

(III) Stringent Quality Control: Full-Lifecycle Quality Traceability

• Full-Chain Traceability System Eliminates Quality Risks: A full-link traceability system covering the raw material procurement, production and manufacturing, finished product inspection, sales and circulation, and after-sales service of Class II and III medical devices has been established. Each batch of products can be accurately traced through a unique code, enabling rapid positioning and resolution of quality issues.
• Multi-Dimensional Testing Standards in Line with International Norms: Finished products must pass a number of stringent tests including mechanical strength, corrosion resistance, biocompatibility and sterility, and strictly comply with the ISO 13485 quality management system requirements to ensure the safety and reliability of implantation into the human body.
• Quality Commitment Endorsement Demonstrates Brand Confidence: The company provides a Lifetime Warranty and a comprehensive Return and Replacement guarantee for its products, escorting global customers and patients with absolute quality confidence.

(IV) Global Compliance: Standard Alignment Adapting to the International Market

• Full Coverage of Authoritative Certifications Opens Up the Global Market: Products have passed international authoritative certifications such as FDA, CE and ISO, complying with medical device regulations such as the US 21 CFR and EU MDR, and have obtained Class III medical device classification certification, fully meeting the stringent requirements for high-risk orthopedic implants.
• Regional Compliance Adaptation Avoids Market Risks: A special compliance team has been established to address regulatory differences in different countries and regions, track changes in national medical device policies in real time, and ensure the legal circulation and clinical application of products in the global market.

IV. 4.0mm Fixation Rod System: A Precise Fixation Solution for Cervical Spine Correction

As the core product of Geasure Medical, the 4.0mm CoCrMo Cervical Spine Correction Screw-Rod System fully aligns with the clinical needs of cervical deformity correction in terms of design, materials and product matrix, making it a truly precise fixation solution.

(I) Core Design: Precise Optimization Adapting to Cervical Anatomy

• 4.0mm Fixation Rod Precisely Matches Cervical Anatomy: With a diameter that perfectly fits the pedicle spacing and spinal canal space of the cervical spine, it is more lightweight than traditional specifications of 5.0mm or more, greatly reducing irritation to the surrounding soft tissues of the cervical spine and facilitating minimally invasive surgery. The rod adopts a high elastic modulus design, combining rigidity and toughness, which can effectively transmit stress, maintain the corrected angle, and fundamentally avoid the problem of postoperative angle loss.
• Half-Threaded Pedicle Screws Synergistically Improve Fixation Effect: Paired with half-threaded pedicle screws, the half-thread design reserves sufficient space for bone fusion and effectively promotes osseointegration. The double-thread structure enhances the pull-out resistance of the screws. The fixation rod and screws are firmly connected through a locking mechanism, forming a three-dimensional fixation system of "screw fixation-rod conduction-integral support", which significantly improves the long-term stability after cervical deformity correction.
• Upgraded Anatomical Adaptability Reduces Surgical and Postoperative Risks: Multiple curvature and length specifications are available to precisely adapt to the physiological curvature of different cervical segments from C3 to C7. The smooth surface treatment reduces tissue damage during implantation and lowers the risk of postoperative inflammation.

(II) Material Assurance: Balancing Strength and Biocompatibility

• Mainstream Material Selection for Diverse Clinical Scenarios: The system is made of medical titanium alloy or CoCrMo alloy. The titanium alloy version is lightweight, corrosion-resistant and has excellent biocompatibility, avoiding the release of metal ions. The CoCrMo alloy version features higher mechanical strength and outstanding fatigue resistance, suitable for clinical scenarios such as severe cervical deformities or long-term weight-bearing requirements.
• Material Compliance Guarantees Product Safety: All raw materials have passed medical-grade certification and can only be put into production after passing batch testing, ensuring that material performance complies with international standards for orthopedic implants.

(III) Expanded Product Matrix: A Complete Solution from Cervical Spine to the Entire Spine

• Core Supporting Instruments for One-Stop Surgical Needs: Paired with a full set of independently developed surgical tools such as bone guide pins, awls, ratchet handles and torque wrenches (referring to the dual-thread instrument ecosystem of the 6.0 system), it meets the one-stop needs of implantation, fixation and locking in the entire process of cervical spine correction surgery, improving surgical efficiency.
• Product Extension to the Entire Spine for Comprehensive Solutions: With the 4.0mm cervical fixation rod system as the core, the product line has been expanded to thoracic, lumbar and sacral fixation series, covering double-thread pedicle screws, PEEK fusion cages, spinal correction forceps and other products. This forms a complete solution for the correction and fusion of the "cervical-thoracic-lumbar-sacral" spine, adapting to diverse clinical scenarios such as deformity correction, fracture fixation and degenerative disease treatment.

V. Full-Cycle Service Empowerment: Differentiated Service Advantages of Geasure Medical

In addition to high-quality products, Geasure Medical also provides full-cycle service support to create differentiated competitive advantages and solve all-round problems for global partners.

1. Customized Service Support Tailored to Individual Needs

• Product Customization: The curvature, length and diameter of the fixation rod, or the specifications and thread parameters of the half-threaded screws can be adjusted according to clinical needs to adapt to special cases of cervical deformities.
• Brand and Packaging Customization: Supporting OEM/ODM cooperation, providing personalized brand logo printing and packaging size customization to meet the brand needs of distributors and medical institutions.

2. Global Logistics and After-Sales Guarantee for Worry-Free Cooperation

• Flexible Logistics Solutions: Adopting standardized carton packaging, the packaging protection can be optimized according to transportation distance and needs to ensure the safe and timely cross-border delivery of products.
• Professional After-Sales Support: A global technical service team has been set up to provide product use training, surgical operation consulting and rapid response to after-sales problems, solving the worries of customers.

3. Building a Partner Ecosystem for Win-Win Development

In-depth cooperation with global orthopedic hospitals, research institutions and distributors is carried out to conduct clinical research, technical exchanges and market co-construction, forming a virtuous circle of "R&D-clinical practice-market".

VI. Market Recognition and Clinical Value: Word-of-Mouth Precipitation Witnessed by Strength

The 4.0mm CoCrMo Cervical Spine Correction Screw-Rod System has won wide recognition from the global market and clinical circles with its excellent performance, becoming a core support for Geasure Medical’s brand influence.

1. International Market Recognition

Relying on authoritative certifications such as FDA and CE and stable product quality, Geasure Medical has become a preferred supplier for orthopedic institutions in many countries around the world. Its products have been applied in thousands of spinal correction surgeries with positive clinical feedback.

2. Core Clinical Value

The 4.0mm fixation rod system helps surgeons achieve precise correction and stable fixation of cervical deformities. Postoperatively, patients have an improved neurological function recovery rate, a reduced complication rate and a shortened hospital stay, winning dual recognition from surgeons and patients.

3. Customer Word-of-Mouth Precipitation

Distributors evaluate Geasure Medical for its "reliable quality, timely delivery and professional service", while orthopedic surgeons recognize its "strong anatomical adaptability, stable fixation and convenient operation", which has become the core support for the company’s brand influence.

VII. Future Outlook: Sustained Innovation Leading the New Direction of Orthopedic Correction Technology

Facing the continuous development of the orthopedic device industry, Geasure Medical will adhere to the path of innovation-driven development and continue to lead the new direction of orthopedic correction technology.

1. Technology Iteration Plan: Towards Minimally Invasive, Intelligent and Personalized Development

Focusing on minimal invasiveness, intelligence and personalization, the company will explore the application of 3D printing technology in the customization of personalized fixation rods for patients with cervical deformities. Integrating AI-assisted surgical planning to improve the implantation accuracy of screws and fixation rods.

2. Product Matrix Expansion: Addressing Complex Clinical Scenarios

Deepening the application of biomaterials, the company will develop new composite-coated fixation rods and screws to accelerate the osseointegration process. Expanding special products for complex scenarios such as pediatric cervical deformities and severe spinal scoliosis.

3. Global Layout Upgrade: Promoting the Global Popularization of Technology

Further improving the global service network, strengthening the development of emerging markets, deepening cooperation with international orthopedic associations, and promoting the global popularization of spinal correction technology.