The LEO Spinal System is intended for use in the noncervical spine. When used as a posteriori, noncervical pedicle and non-pedicle fixation system, the LEO Spinal System is intended as an adjunct to fusion using autograft or allograft in skeletally mature patients in the treatment of the following acute and chronic instabilities or deformities: Degenerative disc disease (DDD) (defined as back pain of discogenic origin with degeneration of the disc confirmed by history and radiographic studies), Spondylolisthesis, Trauma (i.e. fracture or dislocation), Spinal stenosis, Deformities or curvatures (i.e. scoliosis, kyphosis, and/or lordosis), Tumor, Pseudoarthrosis, Failed previous fusion.
Device Story
LEO Spinal System; surgical fixation system for noncervical spine; includes rods (5.5mm, 6.0mm, 6.35mm), pedicle screws (fixed/multi-axial, reduction types), crosslinks, set screws, hooks, connectors. Implants provided non-sterile; require hospital-based manual cleaning and steam sterilization (ISO 17665-1). Used by surgeons in clinical settings to create rigid, patient-specific constructs for spinal stabilization. Benefits include structural support for fusion in patients with degenerative, traumatic, or deformity-related spinal conditions.
Clinical Evidence
No clinical data submitted. Evidence consists of bench testing (ASTM F1717-21 static/dynamic compression and torsion) and biocompatibility testing (ISO 10993-5, -10, -23, -11, -18, -17).
Technological Characteristics
Materials: Titanium alloy (Ti6Al4V) per ISO 5832-3. Components: Rods, pedicle screws, crosslinks, hooks, connectors. Sterilization: Steam autoclave (ISO 17665-1) to SAL 10^-6. Mechanical testing: ASTM F1717-21. Non-sterile, single-use implants.
Indications for Use
Indicated for skeletally mature patients requiring noncervical spinal fixation as an adjunct to fusion for DDD, spondylolisthesis, trauma, spinal stenosis, deformities (scoliosis, kyphosis, lordosis), tumor, pseudoarthrosis, or failed previous fusion.
Regulatory Classification
Identification
(1) Rigid pedicle screw systems are comprised of multiple components, made from a variety of materials that allow the surgeon to build an implant system to fit the patient's anatomical and physiological requirements. Such a spinal implant assembly consists of a combination of screws, longitudinal members (e.g., plates, rods including dual diameter rods, plate/rod combinations), transverse or cross connectors, and interconnection mechanisms (e.g., rod-to-rod connectors, offset connectors).(2) Semi-rigid systems are defined as systems that contain one or more of the following features (including but not limited to): Non-uniform longitudinal elements, or features that allow more motion or flexibility compared to rigid systems.
Special Controls
*Classification.* (1) Class II (special controls), when intended to provide immobilization and stabilization of spinal segments in skeletally mature patients as an adjunct to fusion in the treatment of the following acute and chronic instabilities or deformities of the thoracic, lumbar, and sacral spine: severe spondylolisthesis (grades 3 and 4) of the L5-S1 vertebra; degenerative spondylolisthesis with objective evidence of neurologic impairment; fracture; dislocation; scoliosis; kyphosis; spinal tumor; and failed previous fusion (pseudarthrosis). These pedicle screw spinal systems must comply with the following special controls:(i) Compliance with material standards;
(ii) Compliance with mechanical testing standards;
(iii) Compliance with biocompatibility standards; and
(iv) Labeling that contains these two statements in addition to other appropriate labeling information:
“Warning: The safety and effectiveness of pedicle screw spinal systems have been established only for spinal conditions with significant mechanical instability or deformity requiring fusion with instrumentation. These conditions are significant mechanical instability or deformity of the thoracic, lumbar, and sacral spine secondary to severe spondylolisthesis (grades 3 and 4) of the L5-S1 vertebra, degenerative spondylolisthesis with objective evidence of neurologic impairment, fracture, dislocation, scoliosis, kyphosis, spinal tumor, and failed previous fusion (pseudarthrosis). The safety and effectiveness of these devices for any other conditions are unknown.”
“Precaution: The implantation of pedicle screw spinal systems should be performed only by experienced spinal surgeons with specific training in the use of this pedicle screw spinal system because this is a technically demanding procedure presenting a risk of serious injury to the patient.”
(2) Class II (special controls), when a rigid pedicle screw system is intended to provide immobilization and stabilization of spinal segments in the thoracic, lumbar, and sacral spine as an adjunct to fusion in the treatment of degenerative disc disease and spondylolisthesis other than either severe spondylolisthesis (grades 3 and 4) at L5-S1 or degenerative spondylolisthesis with objective evidence of neurologic impairment. These pedicle screw systems must comply with the following special controls:
(i) The design characteristics of the device, including engineering schematics, must ensure that the geometry and material composition are consistent with the intended use.
(ii) Non-clinical performance testing must demonstrate the mechanical function and durability of the implant.
(iii) Device components must be demonstrated to be biocompatible.
(iv) Validation testing must demonstrate the cleanliness and sterility of, or the ability to clean and sterilize, the device components and device-specific instruments.
(v) Labeling must include the following:
(A) A clear description of the technological features of the device including identification of device materials and the principles of device operation;
(B) Intended use and indications for use, including levels of fixation;
(C) Identification of magnetic resonance (MR) compatibility status;
(D) Cleaning and sterilization instructions for devices and instruments that are provided non-sterile to the end user; and
(E) Detailed instructions of each surgical step, including device removal.
(3) Class II (special controls), when a semi-rigid system is intended to provide immobilization and stabilization of spinal segments in the thoracic, lumbar, and sacral spine as an adjunct to fusion for any indication. In addition to complying with the special controls in paragraphs (b)(2)(i) through (v) of this section, these pedicle screw systems must comply with the following special controls:
(i) Demonstration that clinical performance characteristics of the device support the intended use of the product, including assessment of fusion compared to a clinically acceptable fusion rate.
(ii) Semi-rigid systems marketed prior to the effective date of this reclassification must submit an amendment to their previously cleared premarket notification (510(k)) demonstrating compliance with the special controls in paragraphs (b)(2)(i) through (v) and paragraph (b)(3)(i) of this section.
{0}
FDA U.S. FOOD & DRUG ADMINISTRATION
April 29, 2026
ZheJiang Decans Medical Devices Co., Ltd.
% Xiaoqing Xue
Registration Engineer
Sinow Medical AS
Vestre Fantoftåsen 44, 5072
Bergen,
Norway
Re: K252542
Trade/Device Name: LEO Spinal System
Regulation Number: 21 CFR 888.3070
Regulation Name: Thoracolumbosacral Pedicle Screw System
Regulatory Class: Class II
Product Code: NKB, KWP
Dated: April 1, 2026
Received: April 1, 2026
Dear Xiaoqing Xue:
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
{1}
K252542 - Xiaoqing Xue
Page 2
(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 (DICE@fda.hhs.gov) or phone (1-800-638-2041 or 301-796-7100).
{2}
K252542 - Xiaoqing Xue
Page 3
Sincerely,
EILEEN
CADEL-S
for
Colin O'Neill, M.B.E.
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
{3}
FORM FDA 3881 (8/23)
Page 1 of 1
PSC Publishing Services (303) 443-6740
EF
| DEPARTMENT OF HEALTH AND HUMAN SERVICES Food and Drug Administration Indications for Use | Form Approved: OMB No. 0910-0120 Expiration Date: 07/31/2026 See PRA Statement below. |
| --- | --- |
| 510(k) Number (if known) K252542 | |
| Device Name LEO Spinal System | |
| Indications for Use (Describe) The LEO Spinal System is intended for use in the noncervical spine. When used as a posteriori, noncervical pedicle and non-pedicle fixation system, the LEO Spinal System is intended as an adjunct to fusion using autograft or allograft in skeletally mature patients in the treatment of the following acute and chronic instabilities or deformities: Degenerative disc disease (DDD) (defined as back pain of discogenic origin with degeneration of the disc confirmed by history and radiographic studies), Spondylolisthesis, Trauma (i.e. fracture or dislocation), Spinal stenosis, Deformities or curvatures (i.e. scoliosis, kyphosis, and/or lordosis), Tumor, Pseudoarthrosis, Failed previous fusion. | |
| Type of Use (Select one or both, as applicable) ☑ Prescription Use (Part 21 CFR 801 Subpart D) ☐ Over-The-Counter Use (21 CFR 801 Subpart C) | |
| CONTINUE ON A SEPARATE PAGE IF NEEDED. | |
| This section applies only to requirements of the Paperwork Reduction Act of 1995. *DO NOT SEND YOUR COMPLETED FORM TO THE PRA STAFF EMAIL ADDRESS BELOW.* | |
| The burden time for this collection of information is estimated to average 79 hours per response, including the time to review instructions, search existing data sources, gather and maintain the data needed and complete and review the collection of information. Send comments regarding this burden estimate or any other aspect of this information collection, including suggestions for reducing this burden, to: Department of Health and Human Services Food and Drug Administration Office of Chief Information Officer Paperwork Reduction Act (PRA) Staff PRAStaff@fda.hhs.gov | |
| "An agency may not conduct or sponsor, and a person is not required to respond to, a collection of information unless it displays a currently valid OMB number." | |
{4}
K252542
Page 1 of 3
# 510(K) Summary
| Preparation Date: | April 24, 2026 | |
| --- | --- | --- |
| 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: hfliu@decansmd.com
Phone:+86 15210058659 | |
| Designated Submission Correspondent | Company: Sinow Medical AS
Address: Vestre Fantoftåsen 44, 5072, Bergen, Norway
Contact Person: Xiaoqing Xue
Telephone: +86 15161196032
Email: xue@bergemed.com | |
| Subject Device | Trade name | LEO Spinal System |
| | Regulatory Class | II |
| | Regulation Number | 21 CFR 888.3070 |
| | Classification Name | Thoracolumbosacral Pedicle Screw System |
| | Product Codes | NKB, KWP |
| | Common name for product codes | Thoracolumbosacral pedicle screw system |
| Primary Predicate Device | Manufacturer | Stryker Spine |
| | Trade name | XIA® 3 Spinal System |
| | 510(K) number | K113666 |
| | Regulatory Class | II/III |
| | Regulation Number | 888.3070 |
| | Classification Name | Thoracolumbosacral Pedicle Screw System |
| | Product Codes | NKB, OSH, KWP, MNH, MNI |
| Additional Predicate Device | Manufacturer | Medtronic Sofamor Danek, USA Inc. |
| | Trade name | CD HORIZON Legacy Spinal System |
| | 510(K) number | K223494 |
| | Regulatory Class | II |
| | Regulation Number | 888.3070 |
| | Classification Name | Thoracolumbosacral Pedicle Screw System |
| | Product Codes | NKB, KWP, KWQ, HBE, OLO |
{5}
K252542
Page 2 of 3
| Indications for use | The LEO Spinal System is intended for use in the noncervical spine. When used as a posterior, noncervical pedicle and non-pedicle fixation system, the LEO Spinal System is intended as an adjunct to fusion using autograft or allograft in skeletally mature patients in the treatment of the following acute and chronic instabilities or deformities: Degenerative disc disease (DDD) (defined as back pain of discogenic origin with degeneration of the disc confirmed by history and radiographic studies), Spondylolisthesis, Trauma (i.e. fracture or dislocation), Spinal stenosis, Deformities or curvatures (i.e. scoliosis, kyphosis, and/or lordosis), Tumor, Pseudoarthrosis, Failed previous fusion. |
| --- | --- |
| Device Description | The LEO Spinal System is a medical device system for surgical fixation of the spine. The system includes Ø5.5mm, Ø6.0mm and Ø6.35 type rod diameters and consists of a variety of shapes and sizes of rods, pedicle screws (fixed angle screws, fixed angle reduction screws, multi-axial screws and multi-axial reduction screws), crosslinks, set screw, hooks, and connectors. All components are made from titanium alloy (Ti6Al4V) per ISO 5832-3. LEO Spinal System, which can be rigidly locked into a variety of configurations, are applicable for each construct being tailor-made for the individual case.
The proposed implants are provided non sterile and for single use. It is required to be cleaned and sterilized via autoclave method to reach a SAL of 10^{-6} by the hospital prior to surgery. Validated manual cleaning and steam sterilization instructions are provided for the end user before implantation. The recommended sterilization method was validated as per ISO 17665-1. The surgical instruments may be reprocessed and re-used.
This system also contains Class I manual surgical instruments that are considered exempt from premarket notification. |
| Materials | Titanium alloy (Ti6Al4V) per ISO 5832-3 |
| Summary of indications for use and technological characteristics | The LEO Spinal System is substantially equivalent to the predicate devices when evaluating indications for use and technological characteristics (e.g., intended use, materials, design, and function). |
{6}
K252542
Page 3 of 3
| Non-clinical testing | Performance bench testing
The following testing items were conducted for the subject device:
• Static Axial Compression Bending Testing per ASTM F1717-21
• Dynamic Compression Bending testing per ASTM F1717-21
• Static Torsional Testing per ASTM F1717-21
Cleaning and Sterilization
The implant devices are provided non-sterile. Validated manual cleaning and steam sterilization instructions are provided for the end user before implantation. The recommended sterilization method was validated as per ISO 17665-1.
Biocompatibility test
The following biocompatibility tests were performed per ISO10993-1, and the test results demonstrate that the device meets biological safety requirements.
• In vitro cytotoxicity Test per ISO 10993-5
• Skin sensitization Test per ISO 10993-10
• Intracutaneous Reactivity Test per ISO 10993-23
• Pyrogen Test per ISO 10993-11
• Chemical Characterization per ISO 10993-18
• Toxicological risk assessment of extractable chemicals per ISO |
| --- | --- |
| | 10993-17 |
| Performance - Animal | No animal study data is submitted in this 510(k). |
| Performance - Clinical | No clinical study data is submitted in this 510(k). |
| Conclusion | The non-clinical data demonstrates the LEO Spinal System is substantially equivalent to the predicate device. |
