(615 days)
Not Found
No
The device description focuses on mechanical components and patient-specific sizing based on manual measurements from imaging, with no mention of AI or ML in the design, function, or testing.
Yes.
The device is intended to be used for cemented limb-sparing procedures in pediatric cases, addressing conditions like severe arthropathy, trauma, and malignant diseases, which aligns with the definition of a therapeutic device designed to treat or alleviate a medical condition.
No
This device is an implantable prosthetic system designed to replace bone that is lacking or damaged, primarily in limb-sparing procedures. Its function is therapeutic (replacement and lengthening), not diagnostic.
No
The device description clearly outlines numerous physical components including a telescoping shaft, gearbox, magnet, extension screw assembly, femoral block, and various other hardware parts. The performance studies also include testing of these physical components.
Based on the provided information, this device is not an IVD (In Vitro Diagnostic).
Here's why:
- Intended Use: The intended use clearly states that the device is an implant used for surgical procedures to replace bone. This is a therapeutic intervention, not a diagnostic test performed on samples from the human body.
- Device Description: The description details a physical implant with mechanical components designed to be surgically placed within the patient's body. This is consistent with a medical device, not a diagnostic product.
- Lack of Diagnostic Elements: There is no mention of analyzing biological samples (blood, urine, tissue, etc.) or providing information about a patient's health status based on such analysis. The device's function is structural and mechanical.
IVD devices are used to examine specimens derived from the human body to provide information for diagnostic, monitoring, or compatibility purposes. This device does not fit that description.
N/A
Intended Use / Indications for Use
The JTS® Extendible Implant is intended to be used for cemented limb sparing procedures in paediatric (between the ages of 2 and 21) cases where radical resection and replacement of the distal femur is required with the following conditions:
- . patients suffering from severe arthropathy of the knee that does not respond to any conservative therapy or better alternative surgical treatment,
- surgical intervention for severe trauma, revision knee arthroplasties, failed . previous prostheses and/or oncology indications; and malignant diseases (e.g., osteogenic sarcoma).
The JTS® Extendible Implant and its components are for single use only.
Product codes
KRO
Device Description
The JTS® Extendible Implant is a patient specific system that is used to replace bone which is lacking or damaged or must be removed (e.g., due to tumor). The JTS® Extendible Implant is a distal femoral (passive hinge tibia) implant. The device consists of components (defined below) which are available in a range of sizes depending on the size and needs of the patient. Every configuration includes a telescoping shaft with a gearbox, magnet, and extension screw assembly for extending the implant when required by the patient.
Components available in patient specific sizes:
- Femoral Telescoping Shaft .
- Femoral Block .
- Extension Screw .
- Femoral Shaft .
- Passive Hinge .
- Passive Bearing .
- Tibial Passive Stem .
- HA Coated Extra-cortical Plate that is integral to the Femoral Shaft .
- Hydroxvapatite Collar that is integral to the Femoral Shaft .
- Bumper Pad ◆
- Bushes .
- Axles .
The specific design of the implant is based on the surgeon's description of the case and patient radiological information. The key dimensions for each JTS® Extendible Implant are derived from the generic device specifications and by taking measurements from the patient's X-rays and/or CT scans. The implant is designed and manufactured for each patient.
The JTS® External Drive Unit is used periodically to lengthen the prosthesis when the patient's limb length discrepancy needs to be addressed. The JTS® External Drive Unit creates a magnetic field which interacts with the magnet in the telescoping shaft to lengthen the implant.
Mentions image processing
Not Found
Mentions AI, DNN, or ML
Not Found
Input Imaging Modality
X-rays and/or CT scans
Anatomical Site
distal femur, knee
Indicated Patient Age Range
paediatric (between the ages of 2 and 21)
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)
Performance Testing
The following testing was provided to support a claim of substantial equivalence to the predicate devices:
- Gearbox output shaft seal testing .
- MRI Environment Testing .
- Computer Topography (CT) Testing .
- Axle shear stress .
- Fatique testing of the knee joint .
- Axle shear stress evaluation .
- Rotational laxity of tibial component o
- Range of motion of JTS® Extendible Implant rotating hinge knee .
- Wear test JTS® Extendible Implant .
- Contact Stress .
- Fatique testing for JTS® Extendible Implant .
- EMC test for JTS® Extendible Implant Drive Unit .
- Electrical safety test for JTS® Extendible Implant External Drive Unit .
- Torsional resistance testing of the femoral shaft-knee interface .
- Contact stress evaluation of femoral component with the polymeric bumper pad .
- FEA analysis of the contact stresses in the bushes of the JTS® Extendible . Implant knee
- Summary of clinical data of compassionate use patients and foreign patients . implanted with the JTS® Extendible Implant
Key Metrics (Sensitivity, Specificity, PPV, NPV, etc.)
Not Found
Predicate Device(s)
Reference Device(s)
Not Found
Predetermined Change Control Plan (PCCP) - All Relevant Information
Not Found
§ 888.3510 Knee joint femorotibial metal/polymer constrained cemented prosthesis.
(a)
Identification. A knee joint femorotibial metal/polymer constrained cemented prosthesis is a device intended to be implanted to replace part of a knee joint. The device limits translation or rotation in one or more planes and has components that are linked together or affined. This generic type of device includes prostheses composed of a ball-and-socket joint located between a stemmed femoral and a stemmed tibial component and a runner and track joint between each pair of femoral and tibial condyles. The ball-and-socket joint is composed of a ball at the head of a column rising from the stemmed tibial component. The ball, the column, the tibial plateau, and the stem for fixation of the tibial component are made of an alloy, such as cobalt-chromium-molybdenum. The ball of the tibial component is held within the socket of the femoral component by the femoral component's flat outer surface. The flat outer surface of the tibial component abuts both a reciprocal flat surface within the cavity of the femoral component and flanges on the femoral component designed to prevent distal displacement. The stem of the femoral component is made of an alloy, such as cobalt-chromium-molybdenum, but the socket of the component is made of ultra-high molecular weight polyethylene. The femoral component has metallic runners which align with the ultra-high molecular weight polyethylene tracks that press-fit into the metallic tibial component. The generic class also includes devices whose upper and lower components are linked with a solid bolt passing through a journal bearing of greater radius, permitting some rotation in the transverse plane, a minimal arc of abduction/adduction. This generic type of device is limited to those prostheses intended for use with bone cement (§ 888.3027).(b)
Classification. Class II.
0
K092138
p$13
MAR 2 2 2011
510(k) SUMMARY
Stanmore Implants Worldwide Ltd JTS® Extendible Implant
| Preparation Date: | March 17, 2011 |
|---|---|
| Applicant/Sponsor: | Stanmore Implants Worldwide Ltd |
| 210 Centennial Avenue | |
| Centennial Park | |
| Elstree | |
| WD6 3SJ | |
| Phone: |
- 44 (0) 20 8238 6500
Facsimile: - 44 (0) 20 8953 7443 |
| Contact Person: | Jon Charters
QA/RA Manager |
| Proprietary name: | JTS® Extendible Implant |
| Common or Usual Name: | Limb sparing system |
| Classification Name: | Knee joint femorotibial metal/polymer constrained
cemented prosthesis (21 C.F.R. § 888.3510) |
Predicate Devices
- Wright Medical Technology Inc., Repiphysis Limb Salvage System (K021489) .
- Howmedica (Stryker) Global Modular Replacement System (K023087) .
Intended Use / Indications for Use
The JTS® Extendible Implant is intended to be used for cemented limb sparing procedures in paediatric (between the ages of 2 and 21) cases where radical resection and replacement of the distal femur is required with the following conditions:
- . patients suffering from severe arthropathy of the knee that does not respond to any conservative therapy or better alternative surgical treatment,
- surgical intervention for severe trauma, revision knee arthroplasties, failed . previous prostheses and/or oncology indications; and malignant diseases (e.g., osteogenic sarcoma).
The JTS® Extendible Implant and its components are for single use only.
1
K092438
p2/3
Implant Description
The JTS® Extendible Implant is a patient specific system that is used to replace bone which is lacking or damaged or must be removed (e.g., due to tumor). The JTS® Extendible Implant is a distal femoral (passive hinge tibia) implant. The device consists of components (defined below) which are available in a range of sizes depending on the size and needs of the patient. Every configuration includes a telescoping shaft with a gearbox, magnet, and extension screw assembly for extending the implant when required by the patient.
Components available in patient specific sizes:
- Femoral Telescoping Shaft .
- Femoral Block .
- Extension Screw .
- Femoral Shaft .
- Passive Hinge .
- Passive Bearing .
- Tibial Passive Stem .
- HA Coated Extra-cortical Plate that is integral to the Femoral Shaft .
- Hydroxvapatite Collar that is integral to the Femoral Shaft .
- Bumper Pad ◆
- Bushes .
- Axles .
The specific design of the implant is based on the surgeon's description of the case and patient radiological information. The key dimensions for each JTS® Extendible Implant are derived from the generic device specifications and by taking measurements from the patient's X-rays and/or CT scans. The implant is designed and manufactured for each patient.
The JTS® External Drive Unit is used periodically to lengthen the prosthesis when the patient's limb length discrepancy needs to be addressed. The JTS® External Drive Unit creates a magnetic field which interacts with the magnet in the telescoping shaft to lengthen the implant.
Performance Testing
The following testing was provided to support a claim of substantial equivalence to the predicate devices:
- Gearbox output shaft seal testing .
- MRI Environment Testing .
- Computer Topography (CT) Testing .
- Axle shear stress .
- Fatique testing of the knee joint .
- Axle shear stress evaluation .
2
K092138
p 3/3
- Rotational laxity of tibial component o
- Range of motion of JTS® Extendible Implant rotating hinge knee .
- Wear test JTS® Extendible Implant .
- Contact Stress .
- Fatique testing for JTS® Extendible Implant .
- EMC test for JTS® Extendible Implant Drive Unit .
- Electrical safety test for JTS® Extendible Implant External Drive Unit .
- Torsional resistance testing of the femoral shaft-knee interface .
- Contact stress evaluation of femoral component with the polymeric bumper pad .
- FEA analysis of the contact stresses in the bushes of the JTS® Extendible . Implant knee
- Summary of clinical data of compassionate use patients and foreign patients . implanted with the JTS® Extendible Implant
Substantial Equivalence
The JTS® Extendible Implant is substantially equivalent to the Repiphysis Limb Salvage System and the Global Modular Replacement System. The JTS® Extendible Implant has the same intended uses and similar indications, technological characteristics, and principles of operation as its predicate devices. The minor technological differences between the JTS® Extendible Implant and its predicate devices raise no new issues of safety or effectiveness. Performance data demonstrate that the JTS® Extendible lmplant is as safe and effective as Repiphysis Limb Salvage System and the Global Modular Replacement System. Thus, the JTS® Extendible Implant is substantially equivalent.
3
Image /page/3/Picture/1 description: The image shows the logo for the U.S. Department of Health & Human Services. The logo consists of a circular seal with the text "DEPARTMENT OF HEALTH & HUMAN SERVICES - USA" around the perimeter. Inside the circle is an abstract symbol that resembles a stylized caduceus, a symbol often associated with healthcare.
Food and Drug Administration 10903 New Hampshire Avenue Document Control Room -WO66-G609 Silver Spring, MD 20993-0002
Stanmore Implants Worldwide, Ltd. % Mr. Gerard J. Prud'homme, Esq. Hogan Lovells US LLP 555 Thirteenth Street, NW Washington. D.C. 20004
MAR 2 2 2011
Re: K092138
Trade/Device Name: JTS® Extendible Implant Regulation Number: 21 CFR 888.3510 Regulation Name: Knee joint femorotibial metal/polymer constrained cemented prosthesis Regulatory Class: II Product Code: KRO Dated: July 30, 2010 Received: July 30, 2010
Dear Mr. Prud'homme:
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. The general controls provisions of the Act include requirements for annual registration. Ilisting 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 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
4
Page 2 – Mr. Gerard J. Prud'homme, Esq.
device-related adverse events) (21 CFR 803); good manufacturing practice requirements as set forth in the quality systems (QS) regulation (21 CFR Part 820); and if applicable. the electronic product radiation control provisions (Sections 531-542 of the Act); 21 CFR 1000-1050.
If you desire specific advice for your device on our labeling regulation (21 CFR Part 801), please go to http://www.fda.gov/AboutFDA/CentersOffices/CDRH/CDRHOffices/ucm115809.htm for the Center for Devices and Radiological Health's (CDRH's) Office of Compliance. Also, please note the regulation entitled, "Misbranding by reference to premarket notification" (21CFR Part 807.97). For questions regarding the reporting of adverse events under the MDR regulation (21 CFR Part 803), please go to
http://www.fda.gov/MedicalDevices/Safety/ReportaProblem/default.htm for the CDRH's Office of Surveillance and Biometrics/Division of Postmarket Surveillance.
You may obtain other general information on your responsibilities under the Act from the Division of Small Manufacturers, International and Consumer Assistance at its toll-free number (800) 638-2041 or (301) 796-7100 or at its Internet address http://www.fda.gov/MedicalDevices/Resourcesfor You/Industry/default.htm.
Sincerely vours.
Aling B. n. h
Mark N. Melkerson Director Division of Surgical, Orthopedic and Restorative Devices Office of Device Evaluation Center for Devices and Radiological Health
Enclosure
5
Indications for Use Statement
510(k) Number (if known): K092138
Device Name: JTS® Extendible Implant
Indications for Use:
The JTS® Extendible Implant is indicated for cemented limb sparing procedures in paediatric (between the ages of 2 and 21) cases where radical resection and replacement of the distal femur is required with the following conditions:
- 세 patients suffering from severe arthropathy of the knee that does not respond to any conservative therapy or better alternative surgical treatment;
- D surgical intervention for severe trauma, revision knee arthroplasties, failed previous prostheses and/or oncology indications; and malignant diseases (e.g osteogenic sarcoma).
The JTS® Extendible Implant and its components are for single use only
Prescription Use Yes (Part 21 C.F.R. 801 Subpart D)
(PLEASE DO NOT WRITE BELOW THIS LINE -- CONTINUE ON ANOTHER PAGE IF NEEDED)
Concurrence of CDRH, Office of Device Evaluation (ODE)
for M. Melkerson
(Division Sign-Off)
Division of Surgical, Orthopedic, and Restorative Devices
Page Page of
510(k) Number K092138
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