(25 days)
No
The device description and intended use clearly describe a mechanical spinal implant system and its components, with no mention of software, algorithms, or AI/ML capabilities.
Yes.
The device is intended to provide immobilization of spinal segments as an adjunct to fusion and to restore the integrity of the spinal column for various conditions such as fractures, deformities, tumors, and degenerative diseases, which are therapeutic interventions.
No
The M.U.S.T. Mini posterior cervical screw system is an implantable device intended to provide immobilization and stabilization of spinal segments as an adjunct to fusion, or to restore the integrity of the spinal column, not to diagnose a condition.
No
The device description explicitly details physical components made of Ti-6A1-4V ELI, such as rods and connectors, which are hardware.
Based on the provided text, this device is not an IVD (In Vitro Diagnostic).
Here's why:
- IVD Definition: In Vitro Diagnostics are medical devices used to perform tests on samples taken from the human body (like blood, urine, or tissue) to provide information about a person's health.
- Device Description: The description clearly states that the M.U.S.T. Mini posterior cervical screw system is a system of screws, rods, and connectors made of titanium alloy. These are implanted devices used to stabilize the spine.
- Intended Use: The intended use is to provide immobilization and stabilization of spinal segments as an adjunct to fusion or to restore spinal column integrity. This is a surgical intervention, not a diagnostic test performed on a sample.
The device is a surgical implant used for spinal stabilization, which falls under a different category of medical devices than IVDs.
N/A
Intended Use / Indications for Use
The M.U.S.T. Mini posterior cervical screw system is intended to provide immobilization of spinal segments as an adjunct to fusion, in skeletally mature patient, for the following acute and chronic instabilities of the cervical spine (C1 to C7) and the thoracic spine from T1-T3: traumatic spinal fractures and/or traumatic dislocations; instability or deformity; failed previous (e.g., pseudarthrosis); tumors involving the cervical spine; degenerative disease, including intractable radiculopathy and/or myelopathy, neck and/or arm pain of discogenic origin as confirmed by radiographic studies, and degenerative disease of the facets with instability.
The M.U.S.T. Mini posterior cervical screw system is also intended to restore the integrity of the spinal column even in the absence of fusion for a limited time period in patients with advanced stage tumors involving the cervical spine in whom life expectancy is of insufficient duration to permit achievement of fusion.
In order to achieve additional levels of fixation, the M.U.S.T. Mini posterior cervical screw system may be connected to the M.U.S.T. system rods with the M.U.S.T. Mini rod connectors. Transition rods with differing diameters may also be used to connect the M.U.S.T. Mini posterior cervical screw system to the M.U.S.T. system. Refer to the M.U.S.T. system package insert for a list of the M.U.S.T. indications of use.
When used with the Occipital Plate the M.U.S.T Mini posterior cervical screw system is also intended to provide immobilization and stabilization for the occipito-cervico-thoracic junction(occiput - T3) in treatment of the instabilities mentioned above, including occipitocervical dislocation.
Product codes (comma separated list FDA assigned to the subject device)
NKG, KWP
Device Description
The M.U.S.T. MINI Anodized Rods and the Rod to Rod Connectors (parallel and in-line) are a line extension to the previously cleared Medacta M.U.S.T. MINI Posterior Cervical Screws System (K171369), M.U.S.T. MINI Posterior Cervical Screws System extension (K182837) and M.U.S.T. MINI Posterior Cervical Screws System extension (K200130).
Rod to rod connectors are extended to additional design: the parallel and the In-line design, available in both open/closed design. Connectors are designed to accommodate both the rods in Ø3.5mm and Ø5.5mm. This solution allows to connect the cervical and upper thoracic spine with axial or parallel rods from equal diameter or different: 3.5mm versus 3.5mm versus 5.5mm.
Anodized rods (straight and pre-curved) are provided in straight and pre-curved designs and the diameters and lengths are within the range of existing M.U.S.T. MINI Posterior Cervical Screws System rods product range, with equivalent overall characteristics: same intended use, diameter 3.5mm, in the range 30-420mm, material, machining, washing, packaging and final storing condition.
The subject devices are manufactured from Ti-6A1-4V ELI (ISO 5832-3 Implants for surgery --Metallic materials -- Part 3: Wrought titanium 6-aluminium 4-vanadium allov + ASTM F136 Standard Specification for Wrought Titanium-6Aluminum-4Vanadium ELI (Extra Low Interstitial) Alloy for Surgical Implant Applications (UNS R56401), the same material of the previous cleared M.U.S.T. MINI Posterior Cervical Screws System (K171369) and M.U.S.T. MINI Posterior Cervical Screws System Extension (K182837 and K200130).
Surface finishing of both subjects devices is further characterized by color anodization like for existing Polyaxial screws, hooks, lateral connector, rod to rod connector, cross connector clamp and spinous reconstruction cross connectors (all cleared under K171369), Occipital Plates (K182837) and are Type III color anodized.
Mentions image processing
Not Found
Mentions AI, DNN, or ML
Not Found
Input Imaging Modality
Not Found
Anatomical Site
cervical spine (C1 to C7), thoracic spine from T1-T3, occipito-cervico-thoracic junction (occiput – T3)
Indicated Patient Age Range
skeletally mature patient
Intended User / Care Setting
Not Found
Description of the training set, sample size, data source, and annotation protocol
Not Found
Description of the test set, sample size, data source, and annotation protocol
Not Found
Summary of Performance Studies (study type, sample size, AUC, MRMC, standalone performance, key results)
Engineering Rationale: A comparative analysis of the subject devices to the identified predicate and reference devices was performed to determine if this line-extension created a new worst-case product size. It was determined that the subject devices are substantially equivalent to the previously cleared predicate device and that the line-extension can be considered within the scope of the design verification and validation testing previously completed for the initial MUST MINI implants product range.
Key Metrics (Sensitivity, Specificity, PPV, NPV, etc.)
Not Found
Predicate Device(s): If the device was cleared using the 510(k) pathway, identify the Predicate Device(s) K/DEN number used to claim substantial equivalence and list them here in a comma separated list exactly as they appear in the text. List the primary predicate first in the list.
K171369, K182837, K190631, K200130, K142838, K070573, K023675, K991089, K042508
Reference Device(s): Identify the Reference Device(s) K/DEN number and list them here in a comma separated list exactly as they appear in the text.
Predetermined Change Control Plan (PCCP) - All Relevant Information for the subject device only (e.g. presence / absence, what scope was granted / cleared under the PCCP, any restrictions, etc).
Not Found
§ 888.3075 Posterior cervical screw system.
(a)
Identification. Posterior cervical screw systems are comprised of multiple, interconnecting components, made from a variety of materials that allow an implant system to be built from the occiput to the upper thoracic spine to fit the patient's anatomical and physiological requirements, as determined by preoperative cross-sectional imaging. Such a spinal assembly consists of a combination of bone anchors via screws (i.e., occipital screws, cervical lateral mass screws, cervical pedicle screws, C2 pars screws, C2 translaminar screws, C2 transarticular screws), longitudinal members (e.g., plates, rods, including dual diameter rods, plate/rod combinations), transverse or cross connectors, interconnection mechanisms (e.g., rod-to-rod connectors, offset connectors), and closure mechanisms (e.g., set screws, nuts). Posterior cervical screw systems are rigidly fixed devices that do not contain dynamic features, including but not limited to: non-uniform longitudinal elements or features that allow more motion or flexibility compared to rigid systems.Posterior cervical screw systems are intended to provide immobilization and stabilization of spinal segments in patients as an adjunct to fusion for acute and chronic instabilities of the cervical spine and/or craniocervical junction and/or cervicothoracic junction such as: (1) Traumatic spinal fractures and/or traumatic dislocations; (2) deformities; (3) instabilities; (4) failed previous fusions (
e.g., pseudarthrosis); (5) tumors; (6) inflammatory disorders; (7) spinal degeneration, including neck and/or arm pain of discogenic origin as confirmed by imaging studies (radiographs, CT, MRI); (8) degeneration of the facets with instability; and (9) reconstruction following decompression to treat radiculopathy and/or myelopathy. These systems are also intended to restore the integrity of the spinal column even in the absence of fusion for a limited time period in patients with advanced stage tumors involving the cervical spine in whom life expectancy is of insufficient duration to permit achievement of fusion.(b)
Classification. Class II (special controls). The special controls for posterior cervical screw systems are:(1) The design characteristics of the device, including engineering schematics, must ensure that the geometry and material composition are consistent with the intended use.
(2) Nonclinical performance testing must demonstrate the mechanical function and durability of the implant.
(3) Device components must be demonstrated to be biocompatible.
(4) Validation testing must demonstrate the cleanliness and sterility of, or the ability to clean and sterilize, the device components and device-specific instruments.
(5) Labeling must include the following:
(i) A clear description of the technological features of the device including identification of device materials and the principles of device operation;
(ii) Intended use and indications for use including levels of fixation;
(iii) Device specific warnings, precautions, and contraindications that include the following statements:
(A) “Precaution: Preoperative planning prior to implantation of posterior cervical screw systems should include review of cross-sectional imaging studies (
e.g., CT and/or MRI) to evaluate the patient's cervical anatomy including the transverse foramen, neurologic structures, and the course of the vertebral arteries. If any findings would compromise the placement of these screws, other surgical methods should be considered. In addition, use of intraoperative imaging should be considered to guide and/or verify device placement, as necessary.”(B) “Precaution: Use of posterior cervical pedicle screw fixation at the C3 through C6 spinal levels requires careful consideration and planning beyond that required for lateral mass screws placed at these spinal levels, given the proximity of the vertebral arteries and neurologic structures in relation to the cervical pedicles at these levels.”
(iv) Identification of magnetic resonance (MR) compatibility status;
(v) Cleaning and sterilization instructions for devices and instruments that are provided non-sterile to the end user, and;
(vi) Detailed instructions of each surgical step, including device removal.
0
Image /page/0/Picture/0 description: The image shows the logo for the U.S. Food and Drug Administration (FDA). The logo consists of two parts: on the left is the Department of Health & Human Services logo, which features an abstract image of a person embracing another person. To the right of this is the FDA logo, which includes the letters "FDA" in a blue square, followed by the words "U.S. FOOD & DRUG ADMINISTRATION" in blue text.
November 16, 2020
Medacta International SA % Mr. Chris Lussier Senior Director, Quality and Regulatory Medacta USA 3973 Delp Street Memphis, Tennessee 38118
Re: K203149
Trade/Device Name: M.U.S.T. MINI Posterior Cervical Screws System Regulation Number: 21 CFR 888.3075 Regulation Name: Posterior Cervical Screw System Regulatory Class: Class II Product Code: NKG. KWP Dated: October 21, 2020 Received: October 22, 2020
Dear Mr. Lussier:
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 (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 located 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.
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
1
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 of medical device-related adverse events) (21 CFR 803) for devices or postmarketing safety reporting (21 CFR 4, Subpart B) for combination products (see https://www.fda.gov/combination-products/guidance-regulatory-information/postmarketing-safety-reportingcombination-products); good manufacturing practice requirements as set forth in the quality systems (QS) regulation (21 CFR Part 820) for devices or current good manufacturing practices (21 CFR 4, Subpart A) for combination products; and, if applicable, the electronic product radiation control provisions (Sections 531-542 of the Act); 21 CFR 1000-1050.
Also, please note the regulation entitled, "Misbranding by reference to premarket notification" (21 CFR Part 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-device-safety/medical-device-reportingmdr-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/medicaldevices/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-device-advice-comprehensive-regulatoryassistance/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).
Sincerely,
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
2
Indications for Use
510(k) Number (if known)
K203149
Device Name
M.U.S.T. MINI Posterior Cervical Screws System
Indications for Use (Describe)
The M.U.S.T. Mini posterior cervical screw system is intended to provide immobilization of spinal segments as an adjunct to fusion, in skeletally mature patient, for the following acute and chronic instabilities of the cervical spine (C1 to C7) and the thoracic spine from T1-T3: traumatic spinal fractures and/or traumatic dislocations; instability or deformity; failed previous (e.g., pseudarthrosis); tumors involving the cervical spine; degenerative disease, including intractable radior myelopathy, neck and/or arm pain of discogenic origin as confirmed by radiographic studies, and degenerative disease of the facets with instability.
The M.U.S.T. Mini posterior cervical screw system is also intended to restore the integrity of the spinal column even in the absence of fusion for a limited time period in patients with advanced stage tumors involving the cervical spine in whom life expectancy is of insufficient duration to permit achievement of fusion.
In order to achieve additional levels of fixation, the M.U.S.T. Mini posterior cervical screw system may be connected to the M.U.S.T. system rods with the M.U.S.T. Mini rod connectors. Transition rods with differing diameters may also be used to connect the M.U.S.T. Mini posterior cervical screw system to the M.U.S.T. system. Refer to the M.U.S.T. system package insert for a list of the M.U.S.T. indications of use.
When used with the Occipital Plate the M.U.S.T Mini posterior cervical screw system is also intended to provide immobilization and stabilization for the occipito-cervico-thoracic junction(occiput - T3) in treatment of the instabilities mentioned above, including occipitocervical dislocation.
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) |
|---|---|
| ---------------------------------------------------------------------------------------------- | --------------------------------------------------------------------------------------------- |
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510(k) Summary
I. Submitter
Medacta International SA Strada Regina 6874 Castel San Pietro (CH) Switzerland Phone (+41) 91 696 60 60 Fax (+41) 91 696 60 66
Contact Person: Stefano Baj, Regulatory Affairs and Compliance Director, Medacta International SA Applicant Correspondent: Christopher Lussier, Senior Director, Quality and Regulatory, Medacta USA Date Prepared: October 21, 2020 Date Revised: November 4, 2020
II. Device
| Device Proprietary Name: | M.U.S.T. MINI Posterior Cervical Screws System |
|---|---|
| Common or Usual Name: | Spinal Interlaminal Fixation Orthosis |
| Classification Name: | Posterior Cervical Screw System |
| Primary Product Code: | NKG, KWP |
| Regulation Number: | 21 CFR 888.3075, 21 CFR 888.3050 |
| Device Classification | II |
III. Predicate Device
Substantial equivalence is claimed to the following devices:
Primary predicate device:
-
· M.U.S.T. MINI Posterior Cervical Screws System, K171369, Medacta International SA
Additional predicate devices: -
. M.U.S.T. MINI Posterior Cervical Screws System Extension, K182837, Medacta International SA
-
M.U.S.T. MINI Posterior Cervical Screws System Extension, K190631, Medacta ● International SA
-
M.U.S.T. MINI Posterior Cervical Screws System Extension, K200130, Medacta ● International SA
-
Synapse Occipital-Cervical-Thoracic (OCT) System, K142838, Synthes USA Products, ● LLC (also referred to as Synthes' Synapse System)
-
Synapse System, K070573, Synthes Spine Co. LP, (also referred to as Synthes' Synapse ● System)
-
. Synthes Cervifix/Axon, K023675, Synthes (USA), (also referred to as Synthes' Axon System)
4
- Synthes Cervifix System, K991089, Synthes Spine, (also referred to as Synthes' Axon System)
- Depuy Mountaneer OCT spinal system, K042508, DEPUY SPINE (USA), INC. ●
Reference Predicate:
- MUST Pedicle Screw System, K1121115, Medacta International SA
- MUST Pedicle Screw System, K141988, Medacta International SA ●
- MUST Pedicle Screw System, K162061, Medacta International SA ●
IV. Device Description
The M.U.S.T. MINI Anodized Rods and the Rod to Rod Connectors (parallel and in-line) are a line extension to the previously cleared Medacta M.U.S.T. MINI Posterior Cervical Screws System (K171369), M.U.S.T. MINI Posterior Cervical Screws System extension (K182837) and M.U.S.T. MINI Posterior Cervical Screws System extension (K200130).
Rod to rod connectors are extended to additional design: the parallel and the In-line design, available in both open/closed design. Connectors are designed to accommodate both the rods in 03.5mm and Ø5.5mm. This solution allows to connect the cervical and upper thoracic spine with axial or parallel rods from equal diameter or different: 3.5mm versus 3.5mm versus 5.5mm.
Anodized rods (straight and pre-curved) are provided in straight and pre-curved designs and the diameters and lengths are within the range of existing M.U.S.T. MINI Posterior Cervical Screws System rods product range, with equivalent overall characteristics: same intended use, diameter 3.5mm, in the range 30-420mm, material, machining, washing, packaging and final storing condition.
The subject devices are manufactured from Ti-6A1-4V ELI (ISO 5832-3 Implants for surgery --Metallic materials -- Part 3: Wrought titanium 6-aluminium 4-vanadium allov + ASTM F136 Standard Specification for Wrought Titanium-6Aluminum-4Vanadium ELI (Extra Low Interstitial) Alloy for Surgical Implant Applications (UNS R56401), the same material of the previous cleared M.U.S.T. MINI Posterior Cervical Screws System (K171369) and M.U.S.T. MINI Posterior Cervical Screws System Extension (K182837 and K200130).
Surface finishing of both subjects devices is further characterized by color anodization like for existing Polyaxial screws, hooks, lateral connector, rod to rod connector, cross connector clamp and spinous reconstruction cross connectors (all cleared under K171369), Occipital Plates (K182837) and are Type III color anodized.
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V. Indications for Use
The M.U.S.T. Mini posterior cervical screw system is intended to provide immobilization and stabilization of spinal segments as an adjunct to fusion, in skeletally mature patient, for the following acute and chronic instabilities of the cervical spine (C1 to C7) and the thoracic spine from T1-T3: traumatic spinal fractures and/or traumatic dislocations; instability or deformity; failed previous fusions (e.g., pseudarthrosis); tumors involving the cervical spine; degenerative disease, including intractable radiculopathy and/or myelopathy, neck and/or arm pain of discogenic origin as confirmed by radiographic studies, and degenerative disease of the facets with instability.
The M.U.S.T. Mini posterior cervical screw system is also intended to restore the integrity of the spinal column even in the absence of fusion for a limited time period in patients with advanced stage tumors involving the cervical spine in whom life expectancy is of insufficient duration to permit achievement of fusion.
In order to achieve additional levels of fixation, the M.U.S.T. Mini posterior cervical screw system may be connected to the M.U.S.T. system rods with the M.U.S.T. Mini rod connectors. Transition rods with differing diameters may also be used to connect the M.U.S.T. Mini posterior cervical screw system to the M.U.S.T. system. Refer to the M.U.S.T. system package insert for a list of the M.U.S.T. indications of use.
When used with the Occipital Plate the M.U.S.T Mini posterior cervical screw system is also intended to provide immobilization and stabilization for the occipito-cervico-thoracic junction (occiput – T3) in treatment of the instabilities mentioned above, including occipitocervical dislocation.
VI. Comparison of Technological Characteristics
The M.U.S.T. MINI Posterior Cervical Screws Rods subject of this submission and the predicate devices share the following characteristics:
- diameter;
- materials of construction;
- biocompatibility: ●
- device usage;
- sterility;
- shelf life; and ●
- packaging. ●
The rods are substantially equivalent to the primary predicate device M.U.S.T. MINI Posterior Cervical Screws System (K171369), Synapse Occipital-Cervical-Thoracic (OCT) System, (K142838 and K070573) and Synthes Cervifix/Axon System (K991089 and K023675)
In particular the Straight Anodized Rods subject of this submission have the same diameter of the predicates devices M.U.S.T. MINI Posterior Cervical Screws System (K171369), Synapse Occipital-Cervical-Thoracic (OCT) System, (K142838 and K070573) and Synthes Cervifix/Axon System (K991089 and K023675).
6
The length range included in the Predicates devices, except the longest sizes that don't introduce any worst case than the shorter one, have no impact on safety and performance of the overall construct. A long rod can be cut to adapt the length to patient anatomy.
Pre-curved anodized Rods subject of this submission have the same diameter as the predicate devices M.U.S.T. MINI Posterior Cervical Screws System (K171369), Synapse Occipital-Cervical-Thoracic (OCT) System, (K142838 and K070573) and Synthes Cervifix/Axon System (K991089 and K023675). The length range of Pre-curved anodized Rods is identical to the straight rods included in the predicates devices except the smaller and longest size. The pre-curved rod design reduces intraoperative steps and stress for contouring the rod. Shorter and longer sizes offer improved versatility in the system to accommodate individual patient's anatomy.
The M.U.S.T. MINI Posterior Cervical Screws System Rod to Rod connectors subject of this submission and the predicate devices share the following characteristics:
- smaller rod diameter interface Ø3.5mm
- materials of construction; ●
- biocompatibility; ●
- device usage;
- sterility; ●
- shelf life; and ●
- packaging. ●
The Extension M.U.S.T. MINI Posterior Cervical Screws System rod connectors are substantially equivalent to the predicate devices in terms of smaller rod diameter interface, materials, biocompatibility, device usage, sterility, shelf life and packaging.
In details, the parallel Rod to Rod Connectors have no difference with the predicates devices. The In-line connectors have no impact on the overall construct performance since the fixation interface at the connector-rod is equivalent to the parallel ones.
The new devices has been designed in order to increase the product range. This technological difference does not raise new questions of safety or effectiveness and a comparison evaluation shows there are no new risks associated with the subject device design.
VII. Performance Data
- . Engineering Rationale
A comparative analysis of the subject devices to the identified predicate and reference devices was performed to determine if this line-extension created a new worst-case product size. It was determined that the subject devices are substantially equivalent to the previously cleared predicate device and that the line-extension can be considered within the scope of the design verification and validation testing previously completed for the initial MUST MINI implants product range.
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VIII. Conclusion
The information provided within this submission supports that the subject devices are as safe and effective as the predicate devices.
Although minor differences exist between the subject and primary predicate device, testing supports that these differences do not raise any new questions of safety or effectiveness. Therefore, it is concluded that the subject devices are substantially equivalent to the identified predicate devices.