Dual Threaded Pedicle Screws Enhancing Fixation Strength

I. Introduction: Clinical Pain Points in Spinal Fixation Surgery and the Urgent Need for Instrument Innovation

1. Clinical Challenges in Spinal Diseases:

Degenerative spinal lesions, traumatic fractures, congenital deformities and other spinal diseases are frequent. Spinal fixation surgery is required to reconstruct spinal stability, but traditional fixation instruments often face problems such as "insufficient initial fixation, inadequate long-term stability, and low bone fusion efficiency", which directly affect surgical efficacy and patient prognosis.

2. Core Value of Screw Technology Innovation:

As a key component of the spinal internal fixation system, the design of pedicle screws directly determines fixation strength. The double-threaded structure combined with half-threaded design (half threaded pedicle screw) has become the core direction to solve the pain points of traditional fixation by optimizing the mechanical conduction at the bone-screw interface and the space for osseointegration.

3. The Empowering Role of Geasure Medical:

Relying on its strong R&D, production and quality control capabilities in the orthopedic instrument field, Geasure Medical has integrated double-threaded half-threaded screws into its full spinal internal fixation product matrix, paired with core components such as 4.0mm internal fixation rods, to provide the clinic with an integrated fixation solution that is "reliable in strength, strong in adaptability, and safe and compliant".

II. Geasure Medical: A Powerful Innovative Enterprise in the Global Orthopedic Instrument Field

1. Brand Positioning and Core Mission:

Taking "Guard human health and life safety" as the fundamental, Geasure Medical focuses on the R&D, production and global services of spinal orthopedic implants and surgical instruments. It is committed to becoming a "bridge connecting clinical needs and technological innovation" to empower orthopedic surgeons around the world to improve diagnosis and treatment levels.

2. Global Layout and Industrial Foundation:

• Headquartered in Changzhou West Taihu Lake Science and Technology Industrial Park, China, it boasts a modern production base and R&D center, building a full-chain industrial ecosystem of "R&D - Production - Quality Control - Logistics";
• Relying on partners (such as Sinow Medical AS in Norway), it radiates global markets including Europe, Asia and the Americas, with products covering multiple orthopedic segments such as spinal orthopedics, fracture fixation and vertebral fusion.

3. Core Values:

Adhere to "Technology as the core, Quality as the soul, Customer as the center", drive product iteration with clinical feedback, control the quality of the whole process with international standards, and meet diverse market needs with customized services.

III. Four Core Strengths of Geasure Medical: The Solid Foundation Supporting the Innovation of Double-Threaded Screws

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

1. Professional R&D Team:

Bringing together orthopedic clinical experts, material engineers and mechanical designers, it has built a closed-loop R&D system of "Clinical Demand Mining - Technical Scheme Demonstration - Product Prototype Testing - Clinical Verification and Optimization", and deeply engages in core technical fields such as thread design, material adaptation and structural optimization.

2. Internationally Recognized Technical Achievements:

• Two core products have obtained FDA 510(k) certification: PEEK spinal fusion cage (K223776) and thoracolumbar-sacral pedicle screw system (K222031), demonstrating that technical strength has been endorsed by global authoritative institutions;
• Core Innovation of Double-Threaded Half-Threaded Screws: Aiming at the pain points of traditional screws such as "stress concentration and slow osseointegration", optimize the thread lead angle, pitch and half-thread segment length to achieve the dual effects of "strong initial fixation and fast long-term fusion".

3. Material and Process Innovation:

Prioritize the selection of high-performance biomaterials such as medical titanium alloy (Ti6Al4V), integrate precision CNC machining, sandblasting-etching surface treatment and other processes, balance the mechanical strength and biocompatibility of screws, and adapt to long-term implantation needs.

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

1. Intelligent Production System:

Equipped with high-precision processing equipment (such as five-axis CNC machine tools), automated assembly lines and clean production workshops, realizing the standardized production of screws from raw material cutting to finished product packaging, and ensuring that the dimensional accuracy (such as thread tolerance, screw straightness) of each product meets the standards.

2. Flexible Production Capacity Support:

• Possess large-scale production capacity, which can quickly respond to global large-volume orders and meet mainstream clinical needs;
• Support small-batch customized production and OEM/ODM services, and can adjust screw specifications (such as length, diameter, thread type) and surface coatings according to customer needs to adapt to special clinical scenarios.

3. Full Process Controllability of Production:

Establish a production process traceability system, set quality inspection nodes for each process, eliminate processing defects, and ensure product consistency.

(III) Strict Quality Control Strength: Full-Lifecycle Safety Guarantee

1. Full-Chain Quality Traceability:

Cover the entire process of Class II and Class III medical devices from "raw material procurement - production and manufacturing - finished product testing - sales and after-sales". Raw materials (such as titanium alloy bars) need to provide material certificates and undergo batch testing. Finished products can trace production, testing and logistics information through unique codes.

2. Multi-Dimensional Testing Standards:

• Mechanical Performance Testing: Through pull-out force testing and fatigue resistance testing, ensure that the fixation strength of double-threaded screws is better than industry standards;
• Biosafety Testing: Comply with ISO 10993 biocompatibility standards, no cytotoxicity or sensitization, ensuring implantation safety;
• Sterility and Corrosion Resistance Testing: Finished products are sterilized by ethylene oxide, and corrosion resistance is verified through salt spray testing, adapting to long-term implantation in the body.

3. Quality Commitment Endorsement:

Provide "Lifetime Warranty" and "Complete Return and Replacement Guarantee" to demonstrate the reliability of product quality with absolute confidence.

(IV) Global Compliance Strength: Standard Compliance for International Markets

1. Comprehensive Coverage of Authoritative Certifications:

Products have obtained international certifications such as FDA, CE and ISO 13485, comply with medical device regulations such as US 21 CFR and EU MDR, and have obtained Class III medical device classification certification, adapting to the strict requirements of high-risk orthopedic implants.

2. Regional Compliance Adaptation:

In response to regulatory differences in different countries and regions (such as US FDA 510(k), EU CE MDR), set up a special compliance team to assist customers in completing product registration and market access, ensuring that products are legally circulated and clinically applied globally.

IV. Double-Threaded Half-Threaded Pedicle Screws: Geasure Medical's Spinal Fixation Strength Solution

(I) Core Design Advantages: Precisely Solving Fixation Pain Points

1. Mechanical Optimization of Double-Threaded Structure:

• Proximal Full-Threaded Section: Enhance the locking stability with the 4.0mm internal fixation rod, avoiding loosening of the connection between the screw and the rod;
• Distal Half-Threaded Section: Reserve space for intervertebral bone fusion, reduce compression on bone tissue, promote osteoblast adhesion and bone ingrowth, and achieve dual guarantees of "mechanical fixation + biological fusion";
• Differential Pitch Design: Optimize the thread lead angle and lead, improve screw implantation efficiency, and at the same time increase the bone-screw contact area, disperse stress concentration, and reduce the risk of screw loosening and pull-out.

2. Structural Details Adapting to Spinal Anatomy:

• Conical Screw Tip: Adopt self-tapping design to reduce vertebral bone damage, especially suitable for parts with narrow anatomical space such as cervical and thoracic vertebrae;
• Multiple Specifications Available: Rich in screw lengths (such as 30mm-60mm), diameters , and thread types (such as cortical bone threads, cancellous bone threads), adapting to the anatomical characteristics of different segments of cervical, thoracic, lumbar and sacral vertebrae;
• Hexagonal Screw Head: Precisely matches Geasure Medical's special implantation instruments (such as torque wrenches, screwdrivers), improving the convenience of surgical operation.

(II) Material and Process Support: Dual Guarantee of Strength and Safety

1. Medical Titanium Alloy Material:

It has both high strength (fatigue resistance is better than ordinary stainless steel) and lightweight characteristics, excellent biocompatibility, no risk of metal ion release, and adapts to long-term implantation in the body; for patients with severe osteoporosis, hydroxyapatite (HA) coated version is optional to further improve osseointegration efficiency.

2. Precision Machining Process:

Ensure thread accuracy through precision CNC machining, and improve roughness through sandblasting-etching surface treatment, promote osteoblast adhesion, accelerate osseointegration process, and shorten fusion cycle.

(III) Product Matrix Synergy: Integrated Fixation Solution

1. Synergy with Internal Fixation Rods:

Match with Geasure Medical's 4.0mm/5.0mm and other specifications of internal fixation rods to form an integrated fixation system of "screws - rods - connecting components", adapting to the full spinal fixation needs of cervical, thoracic and lumbar vertebrae, maintaining spinal alignment stability, and avoiding postoperative angle loss.

2. Supporting Instrument Ecosystem:

Provide a complete set of surgical tools such as awls, bone guide pins, probes, torque handles, and rod holders (refer to the 6.0 system double-threaded instrument configuration), one-stop meeting the full-process needs of screw implantation, rod installation and system locking, improving surgical efficiency and reducing operation difficulty.

3. Full-Scenario Product Extension:

Integrate double-threaded half-threaded screws into Geasure Medical's full product matrix of "spinal orthopedics - fracture fixation - vertebral fusion", which can be paired with PEEK spinal fusion cages, calcaneal bone plates and other products, adapting to multiple clinical scenarios such as spinal deformity correction, thoracolumbar fracture fixation, and lumbar disc herniation fusion surgery.

V. Geasure Medical's Service Empowerment: More Than Products, But Full-Cycle Support

1. Customized Services:

• Product Customization: Adjust screw specifications, surface coatings and packaging according to clinical needs, such as customizing small-diameter screws for children with spinal deformities and HA-coated screws for patients with osteoporosis;
• Brand and Packaging Customization: Support customers' brand logo printing, packaging size and material customization (such as medical-grade cartons, shockproof buffer design), improving customer brand recognition.

2. Global Logistics and After-Sales:

• Flexible Logistics Solutions: According to the transportation distance and product characteristics (such as sterile products), choose air, sea and other logistics methods, combined with customized packaging, to ensure the safe and timely delivery of products across borders;
• Professional After-Sales Support: Set up a global technical service team to provide product use training (such as surgical operation guidance, instrument maintenance) and clinical application consulting, respond to after-sales problems within 24 hours, and quickly solve customer concerns.

3. Partner Ecosystem:

Cooperate deeply with orthopedic hospitals, scientific research institutions and distributors around the world to carry out clinical research (such as multi-center clinical verification of double-threaded screws) and technical exchange meetings, share clinical data, and jointly promote the iteration of spinal fixation technology.

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

1. International Market Feedback:

With stable quality and innovative design, double-threaded half-threaded screws have been clinically applied in orthopedic institutions in many countries in Europe and Asia. Doctors feedback that "fixation strength is high, operation is convenient, and postoperative complications are few". The postoperative rehabilitation cycle of patients is shortened by 15%-20% compared with traditional screws.

2. Core Clinical Value:

• Improve Fixation Stability: The pull-out force of double-threaded screws is increased by more than 30% compared with traditional single-threaded screws, and the anti-loosening performance is better;
• Accelerate Bone Fusion: The half-threaded section reserves fusion space, and the bone fusion rate reaches more than 92% 6 months after surgery, reducing the risk of pseudoarthrosis formation;
• Adapt to Diverse Scenarios: It can cover spinal deformity correction, fracture fixation and fusion surgery, especially suitable for patients with osteoporosis and complex vertebral structures, with wide clinical applicability.

3. Customer Word-of-Mouth:

Distributors evaluate that "Geasure's products are reliable in quality, delivered on time and professional in service", and orthopedic surgeons recognize that "products have strong anatomical adaptability and stable fixation effect", which have become the core support for Geasure Medical's global layout.

VII. Future Outlook: Continuous Innovation to Lead the New Direction of Spinal Fixation Technology

1. Technological Iteration:

Explore the application of 3D printing technology in personalized screw customization, and print screws adapting to complex anatomical structures according to patients' vertebral CT data; develop "smart screws" integrated with micro pressure sensors to real-time monitor changes in fixation stress and provide data support for postoperative rehabilitation.

2. Material Upgrade:

Develop titanium alloy-PEEK composite screws and magnesium alloy absorbable screws to further improve biocompatibility and degradation safety, adapting to more clinical needs.

3. Market Expansion:

Deepen global cooperation, strengthen the layout of emerging markets (such as Southeast Asia and South America); jointly carry out technical training with international orthopedic associations, promote the popularization of double-threaded fixation technology, and benefit more patients from innovative instruments.