SAGI Cervical Cage System

K253213 · ZheJiang Decans Medical Devices Co., Ltd. · OVE · Apr 20, 2026 · Orthopedic

Device Facts

• Record ID: K253213
• Device Name: SAGI Cervical Cage System
• Applicant: ZheJiang Decans Medical Devices Co., Ltd.
• Product Code: OVE · Orthopedic
• Decision Date: Apr 20, 2026
• Decision: SESE
• Submission Type: Traditional
• Regulation: 21 CFR 888.3080
• Device Class: Class 2
• Attributes: Therapeutic

Indications for Use

The SAGI Cervical Cage System is a stand-alone anterior cervical interbody fusion device indicated for use in skeletally mature patients with degenerative disc disease (DDD) with accompanying radicular symptoms at one level from C2-T1. DDD is defined as discogenic pain with degeneration of the disc confirmed by history and radiographic studies. These patients should have had six weeks of non-operative treatment. The SAGI Cervical Cage System is designed for use with autogenous bone graft to facilitate fusion and is to be implanted via an open, anterior approach.

Device Story

Stand-alone anterior cervical interbody fusion device; consists of PEEK cage, titanium alloy anterior fixation plate, and screws. Implanted via open anterior approach to stabilize cervical spine and facilitate fusion with autogenous bone graft. Used in hospital/healthcare facilities by surgeons. Cage includes tantalum markers for radiographic visualization. Screws pass through device into vertebral bodies. Provides mechanical stabilization of spinal segment.

Clinical Evidence

No clinical study data is submitted in this 510(k). Bench testing only.

Technological Characteristics

Materials: PEEK-OPTIMA LT1 (ASTM F2026), Ti-6Al-4V (ISO 5832-3), Tantalum (ISO 13782). Stand-alone interbody fusion cage with integrated fixation plate and screws. Sterilization: Gamma radiation (ISO 11137-1/2/3), SAL 10^-6. Mechanical testing per ASTM F2077-24, F2276-24, and F543-23.

Indications for Use

Indicated for skeletally mature patients with degenerative disc disease (DDD) and radicular symptoms at one level from C2-T1, following six weeks of failed non-operative treatment.

Regulatory Classification

Identification

An intervertebral body fusion device is an implanted single or multiple component spinal device made from a variety of materials, including titanium and polymers. The device is inserted into the intervertebral body space of the cervical or lumbosacral spine, and is intended for intervertebral body fusion.

Special Controls

*Classification.* (1) Class II (special controls) for intervertebral body fusion devices that contain bone grafting material. The special control is the FDA guidance document entitled “Class II Special Controls Guidance Document: Intervertebral Body Fusion Device.” See § 888.1(e) for the availability of this guidance document.(2) Class III (premarket approval) for intervertebral body fusion devices that include any therapeutic biologic (e.g., bone morphogenic protein). Intervertebral body fusion devices that contain any therapeutic biologic require premarket approval. (c) *Date premarket approval application (PMA) or notice of product development protocol (PDP) is required.* Devices described in paragraph (b)(2) of this section shall have an approved PMA or a declared completed PDP in effect before being placed in commercial distribution.

Predicate Devices

• Stryker Spine AVS® Anchor-C Cervical Cage System (K102606)
• Synthes Zero-P (K072981)
• Synthes Zero-P Variable Angle (VA) (K112068)
• Gemini Cervical Fusion Cage System (K242195)
• Gemini Medical Cage System (K242267)

Submission Summary (Full Text)

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FDA U.S. FOOD & DRUG ADMINISTRATION

April 20, 2026

ZheJiang Decans Medical Devices Co., Ltd.
Haifeng Liu
Registration Manager
No.2836 Xincheng Avenue, Gaozhao Street, Xiuzhou District
Jiaxing City, Zhejiang Province 314031
China

Re: K253213
Trade/Device Name: SAGI Cervical Cage System
Regulation Number: 21 CFR 888.3080
Regulation Name: Intervertebral Body Fusion Device
Regulatory Class: Class II
Product Code: OVE
Dated: September 29, 2025
Received: March 20, 2026

Dear Haifeng Liu:

We have reviewed your section 510(k) premarket notification of intent to market the device referenced above and have determined the device is substantially equivalent (for the indications for use stated in the enclosure) to legally marketed predicate devices marketed in interstate commerce prior to May 28, 1976, the enactment date of the Medical Device Amendments, or to devices that have been reclassified in accordance with the provisions of the Federal Food, Drug, and Cosmetic Act (the Act) that do not require approval of a premarket approval application (PMA). You may, therefore, market the device, subject to the general controls provisions of the Act. Although this letter refers to your product as a device, please be aware that some cleared products may instead be combination products. The 510(k) Premarket Notification Database available at https://www.accessdata.fda.gov/scripts/cdrh/cfdocs/cfpmn/pmn.cfm identifies combination product submissions. The general controls provisions of the Act include requirements for annual registration, listing of devices, good manufacturing practice, labeling, and prohibitions against misbranding and adulteration. Please note: CDRH does not evaluate information related to contract liability warranties. We remind you, however, that device labeling must be truthful and not misleading.

If your device is classified (see above) into either class II (Special Controls) or class III (PMA), it may be subject to additional controls. Existing major regulations affecting your device can be found in the Code of Federal Regulations, Title 21, Parts 800 to 898. In addition, FDA may publish further announcements concerning your device in the Federal Register.

Additional information about changes that may require a new premarket notification are provided in the FDA guidance documents entitled "Deciding When to Submit a 510(k) for a Change to an Existing Device"

U.S. Food & Drug Administration
10903 New Hampshire Avenue
Silver Spring, MD 20993
www.fda.gov

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K253213 - Haifeng Liu
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(https://www.fda.gov/media/99812/download) and "Deciding When to Submit a 510(k) for a Software Change to an Existing Device" (https://www.fda.gov/media/99785/download).

Your device is also subject to, among other requirements, the Quality Management System Regulation (QMSR) (21 CFR Part 820), which includes, but is not limited to, ISO 13485 clause 7.3 (Design controls), ISO 13485 clause 8.3 (Nonconforming product), ISO 13485 clause 8.5.2 (Corrective action), and ISO 13485 clause 8.5.3 (Preventative action). Please note that regardless of whether a change requires premarket review, the QMSR requires device manufacturers to review and approve changes to device design and production (ISO 13485 clause 7.3 and ISO 13485 clause 7.5) and document changes and approvals in the Medical Device File (ISO 13485 clause 4.2.3).

Please be advised that FDA's issuance of a substantial equivalence determination does not mean that FDA has made a determination that your device complies with other requirements of the Act or any Federal statutes and regulations administered by other Federal agencies. You must comply with all the Act's requirements, including, but not limited to: registration and listing (21 CFR Part 807); labeling (21 CFR Part 801); medical device reporting (reporting of medical device-related adverse events) (21 CFR Part 803) for devices or postmarketing safety reporting (21 CFR Part 4, Subpart B) for combination products (see https://www.fda.gov/combination-products/guidance-regulatory-information/postmarketing-safety-reporting-combination-products); good manufacturing practice requirements as set forth in the Quality Management System Regulation (QMSR) (21 CFR Part 820) for devices or current good manufacturing practices (21 CFR Part 4, Subpart A) for combination products; and, if applicable, the electronic product radiation control provisions (Sections 531-542 of the Act); 21 CFR Parts 1000-1050.

All medical devices, including Class I and unclassified devices and combination product device constituent parts are required to be in compliance with the final Unique Device Identification System rule ("UDI Rule"). The UDI Rule requires, among other things, that a device bear a unique device identifier (UDI) on its label and package (21 CFR 801.20(a)) unless an exception or alternative applies (21 CFR 801.20(b)) and that the dates on the device label be formatted in accordance with 21 CFR 801.18. The UDI Rule (21 CFR 830.300(a) and 830.320(b)) also requires that certain information be submitted to the Global Unique Device Identification Database (GUDID) (21 CFR Part 830 Subpart E). For additional information on these requirements, please see the UDI System webpage at https://www.fda.gov/medical-devices/device-advice-comprehensive-regulatory-assistance/unique-device-identification-system-udi-system.

Also, please note the regulation entitled, "Misbranding by reference to premarket notification" (21 CFR 807.97). For questions regarding the reporting of adverse events under the MDR regulation (21 CFR Part 803), please go to https://www.fda.gov/medical-devices/medical-device-safety/medical-device-reporting-mdr-how-report-medical-device-problems.

For comprehensive regulatory information about medical devices and radiation-emitting products, including information about labeling regulations, please see Device Advice (https://www.fda.gov/medical-devices/device-advice-comprehensive-regulatory-assistance) and CDRH Learn (https://www.fda.gov/training-and-continuing-education/cdrh-learn). Additionally, you may contact the Division of Industry and Consumer Education (DICE) to ask a question about a specific regulatory topic. See the DICE website (https://www.fda.gov/medical-devices/device-advice-comprehensive-regulatory-assistance/contact-us-division-industry-and-consumer-education-dice) for more information or contact DICE by email ([e-mail]) or phone [phone] or 301-796-7100).

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K253213 - Haifeng Liu
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Sincerely,

COLIN O'NEILL -S
for
Brent Showalter, Ph.D.
Assistant Director
DHT6B: Division of Spinal Devices
OHT6: Office of Orthopedic Devices
Office of Product Evaluation and Quality
Center for Devices and Radiological Health

Enclosure

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| Indications for Use | | |
| --- | --- | --- |
| Please type in the marketing application/submission number, if it is known. This textbox will be left blank for original applications/submissions. | K253213 | ? |
| Please provide the device trade name(s). | | ? |
| SAGI Cervical Cage System | | |
| Please provide your Indications for Use below. | | ? |
| The SAGI Cervical Cage System is a stand-alone anterior cervical interbody fusion device indicated for use in skeletally mature patients with degenerative disc disease (DDD) with accompanying radicular symptoms at one level from C2-T1. DDD is defined as discogenic pain with degeneration of the disc confirmed by history and radiographic studies. These patients should have had six weeks of non-operative treatment. The SAGI Cervical Cage System is designed for use with autogenous bone graft to facilitate fusion and is to be implanted via an open, anterior approach. | | |
| Please select the types of uses (select one or both, as applicable). | ☑ Prescription Use (Part 21 CFR 801 Subpart D)
☐ Over-The-Counter Use (21 CFR 801 Subpart C) | ? |

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K253213

510(K) Summary

| Preparation Date: | September. 28, 2025 | |
| --- | --- | --- |
| Submitter | ZheJiang Decans Medical Devices Co., Ltd.
No.2836 Xincheng Avenue, Gaozhao Street, Xiuzhou District, Jiaxing City, Zhejiang Province, 314031,P.R. China | |
| Contact | Haifeng Liu, Registration Manager
ZheJiang Decans Medical Devices Co., Ltd.
No.2836 Xincheng Avenue, Gaozhao Street, Xiuzhou District, Jiaxing City, Zhejiang Province, 314031,P.R. China
Postcode: 314031
Email: [e-mail]
Phone:[phone] | |
| Subject Device | Trade name | SAGI Cervical Cage System |
| | Regulatory Class | II |
| | Regulation Number | 21 CFR 888.3080 |
| | Classification Name | Intervertebral body fusion device |
| | Product Codes | OVE |
| Primary Predicate Device | Manufacturer | STRYKER SPINE |
| | Trade name | Stryker Spine AVS® Anchor-C Cervical Cage System |
| | 510(K) number | K102606 |
| | Regulatory Class | II |
| | Regulation Number | 21 CFR 888.3080 |
| | Classification Name | Intervertebral body fusion device |
| | Product Codes | OVE |
| Additional Predicate Device | Manufacturer | DePuy Synthes |
| | Trade name | Synthes Zero-P |
| | 510(K) number | K072981 |
| | Regulatory Class | II |
| | Regulation Number | 21 CFR 888.3080 |
| | Classification Name | Intervertebral body fusion device |
| | Product Codes | OVE |
| Additional Predicate Device | Manufacturer | Synthes Spine Co., L.P. |
| | Trade name | Synthes Zero-P Variable Angle (VA) |
| | 510(K) number | K112068 |
| | Regulatory Class | II |
| | Regulation Number | 21 CFR 888.3080 |
| | Classification Name | Intervertebral body fusion device |
| | Product Codes | OVE |
| Additional Predicate Device | Manufacturer | ZheJiang Decans Medical Devices Co., Ltd. |
| | Trade name | Gemini Cervical Fusion Cage System |

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K253213

| | 510(K) number | K242195 |
| --- | --- | --- |
| | Regulatory Class | II |
| | Regulation Number | 21 CFR 888.3080 |
| | Classification Name | Intervertebral body fusion device |
| | Product Codes | ODP |
| Additional Predicate Device | Manufacturer | ZheJiang Decans Medical Devices Co., Ltd. |
| | Trade name | Gemini Medical Cage System |
| | 510(K) number | K242267 |
| | Regulatory Class | II |
| | Regulation Number | 21 CFR 888.3080 |
| | Classification Name | Intervertebral body fusion device |
| | Product Codes | MAX |
| Indications for use | The SAGI Cervical Cage System is a stand-alone anterior cervical interbody fusion device indicated for use in skeletally mature patients with degenerative disc disease (DDD) with accompanying radicular symptoms at one level from C2-T1. DDD is defined as discogenic pain with degeneration of the disc confirmed by history and radiographic studies. These patients should have had six weeks of non-operative treatment. The SAGI Cervical Cage System is designed for use with autogenous bone graft to facilitate fusion and is to be implanted via an open, anterior approach. | |
| Device Description | SAGI Cervical Cage System(including Type I, II and III Zero-profile interbody fusion cage system) is a stand-alone interbody fusion device intended to be used with screws to stabilize the cervical spinal column and facilitate fusion. Each type is composed of a PEEK cage with a radiopaque marker, a titanium alloy anterior fixation plate and screws. The cage is preassembled with an anterior fixation plate.The cages are manufactured from medical grade Polyetheretherketone (PEEK-OPTIMA® LT1) as described by ASTM F2026, while the anterior fixation plate and screws are machined from Ti-6Al-4V titanium alloy per ISO 5832-3. In addition,tantalum markers conforming to ISO 13782 are embedded in the cages to help allow for radiographic visualization.The cage is available in sizes that vary in footprint sizes, heights, and lordotic angles to accommodate patient anatomy. The screws are available in various diameters and lengths. Screws engage the vertebral bodies by passing through the intervertebral body fusion device and into bone. | |
| Materials | PEEK,Tantalum and Ti6Al4V | |
| Patient Contact | Bone and surrounding tissue | |
| Contact Duration | Permanent, >30 days | |
| Sterilization Method | The implants are irradiation sterile provided and for single use.The surgical instruments are non-sterile provided, and validated manual cleaning and steam sterilization instructions are provided for the end user. | |
| Environment of Use | Healthcare facility/Hospital | |
| Single Use | Yes | |
| Summary of | The SAGI Cervical Cage System is substantially equivalent to the predicate | |

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K253213

| indication for use and technological characteristics | devices when evaluating indication for use and technological characteristics.
The subject device has the identical indication for use as the predicate device. The subject device and predicate devices are substantially equivalent with only minor differences in technological characteristics regarding:
• ZP-I and ZP-III interbody lordosis angle
• marker materials
These differences do not raise new questions of safety and effectiveness. |
| --- | --- |
| Non-clinical test | Performance-bench test including:
Static Torsion testing per ASTM F2077-24
Torsional Fatigue Testing per ASTM F2077-24
Axial Compression Testing per ASTM F2077-24
Compression Fatigue Testing per ASTM F2077-24
Static Compression-Shear Testing per ASTM F2077-24
Compression-Shear Fatigue Testing per ASTM F2077-24
Subsidence Testing per ASTM F2276-24
Axial Pullout Strength Testing per ASTM F543-23
Driving Torque Testing per ASTM F543-23
Torsional Properties Testing per ASTM F543-23

Sterilization:
The subject device is sterilized using Gamma Radiation. The sterilization validation has been performed in accordance with the principles of ISO 11137-1:2015 Sterilization of health care products - Radiation - Part 1: Requirements for development, validation and routine control of a sterilization process for medical devices, ISO 11137-2:2013 Sterilization of health care products - Radiation - Part 2: Establishing the sterilization dose and ISO 11137-3:2017 Sterilization of health care products - Radiation - Part 3: Guidance on dosimetric aspects of development, validation and routinecontrol. A sterility assurance level (SAL) of 10^{-6} has been demonstrated. A shelf-life of 5 years has been established based on accelerated aging testing. |
| Performance - Animal | No animal study data is submitted in this 510(k). |
| Performance - Clinical | No clinical study data is submitted in this 510(k). |
| Substantial Equivalence | The SAGI Cervical Cage System is substantially equivalent to the predicate devices when evaluating indication for use and technological characteristics with only minor differences. These differences do not raise new questions of safety and effectiveness. |
| Conclusion | The non-clinical data demonstrates the SAGI Cervical Cage System is substantially equivalent to the predicate device. |

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