(114 days)
Hemi or Total Shoulder:
The SEVIIN Fracture Shoulder is intended for cemented use for a severely painful and/or disabled shoulder joint resulting from osteoarthritis, traumatic arthritis or rheumatoid arthritis. It is also intended for fracture dislocations of the proximal humerus where the articular surface is severely comminuted, separated from its blood supply or where the surgeon's experience indicates that alternative methods of treatment are unsatisfactory. The device can be used in other difficult clinical problems where shoulder arthrodesis or resection arthroplasty are not acceptable (e.g., revision of failed primary component). Hemi-shoulder replacement is also indicated for un-united humeral head fractures and avascular necrosis of the humeral head.
Reverse Shoulder:
The SEVIIN Fracture Shoulder is also indicated for fracture total shoulder arthroplasty (due to acute fracture of the proximal humerus in combination with degenerative diseases of the glenohumeral joint) for the relief of pain and to improve function in patients with a massive and non-repairable rotator cuff tear.
The patient's joint must be anatomically and structurally suited to receive the selected implants and a functional deltoid muscle is necessary to use the device.
The SEVIIN Fracture Shoulder humeral stems are intended for cemented applications. The glenoid components are intended for cemented use (total shoulder arthroplasty) and the TPS coated metaglene component is intended for cementless use with the addition of screws for fixation (reverse arthroplasty).
The SEVIIN Fracture Shoulder is a hemi or total shoulder prosthesis designed for use in patients with acute fracture of the proximal humerus. The modularity of the system allows for the later conversion of a primary hemi-arthroplasty to a total shoulder. Additionally, the SEVIIN Fracture Shoulder can be used with the SEVIIN Reverse shoulder for relief of pain or significant disability associated with a grossly deficient or non-repairable rotator cuff joint if necessary.
The Fracture Humeral Stems are manufactured from Ti-6Al-4V utanium alloy conforming to ASTM F136 and have a corundum blasted proximal surface to enhance bone cement fixation. Lateral fins with suture holes are designed for soft tissue attachment. The device features an anatomical neck/shaft angle and a 6 degree taper to mate with humeral heads (hemi or total shoulder) or a humeral cup (reverse shoulder).
Five sizes of fracture stems are available: 8, 10, 12mm diameter x 120mm and 8 and 10mm diameter x 200mm with a polished and fluted distal stem.
The Fracture humeral stems can be used with the SEVIIN Total Shoulder Humeral Heads and Glenoids (K043346) in addition to SEVIIN Reverse Shoulder components (K120374).
This 510(k) summary explicitly states that no non-clinical or clinical testing was performed to demonstrate substantial equivalence for the SEVIIN Fracture Shoulder. Therefore, there are no acceptance criteria or study results to report in the format requested.
The device's substantial equivalence determination was based on the comparison of its intended use, indications, materials, sizes, and design to legally marketed predicate devices. The FDA concluded that the noted differences did not raise new types of safety and effectiveness questions or new technological issues.
In summary, none of the requested information (acceptance criteria, device performance, sample sizes, expert qualifications, adjudication methods, MRMC studies, standalone performance, ground truth details, or training set information) is available because no studies were conducted.
§ 888.3660 Shoulder joint metal/polymer semi-constrained cemented prosthesis.
(a)
Identification. A shoulder joint metal/polymer semi-constrained cemented prosthesis is a device intended to be implanted to replace a shoulder joint. The device limits translation and rotation in one or more planes via the geometry of its articulating surfaces. It has no linkage across-the-joint. This generic type of device includes prostheses that have a humeral resurfacing component made of alloys, such as cobalt-chromium-molybdenum, and a glenoid resurfacing component made of ultra-high molecular weight polyethylene, and is limited to those prostheses intended for use with bone cement (§ 888.3027).(b)
Classification. Class II. The special controls for this device are:(1) FDA's:
(i) “Use of International Standard ISO 10993 ‘Biological Evaluation of Medical Devices—Part I: Evaluation and Testing,’ ”
(ii) “510(k) Sterility Review Guidance of 2/12/90 (K90-1),”
(iii) “Guidance Document for Testing Orthopedic Implants with Modified Metallic Surfaces Apposing Bone or Bone Cement,”
(iv) “Guidance Document for the Preparation of Premarket Notification (510(k)) Application for Orthopedic Devices,” and
(v) “Guidance Document for Testing Non-articulating, ‘Mechanically Locked’ Modular Implant Components,”
(2) International Organization for Standardization's (ISO):
(i) ISO 5832-3:1996 “Implants for Surgery—Metallic Materials—Part 3: Wrought Titanium 6-aluminum 4-vandium Alloy,”
(ii) ISO 5832-4:1996 “Implants for Surgery—Metallic Materials—Part 4: Cobalt-chromium-molybdenum casting alloy,”
(iii) ISO 5832-12:1996 “Implants for Surgery—Metallic Materials—Part 12: Wrought Cobalt-chromium-molybdenum alloy,”
(iv) ISO 5833:1992 “Implants for Surgery—Acrylic Resin Cements,”
(v) ISO 5834-2:1998 “Implants for Surgery—Ultra-high Molecular Weight Polyethylene—Part 2: Moulded Forms,”
(vi) ISO 6018:1987 “Orthopaedic Implants—General Requirements for Marking, Packaging, and Labeling,” and
(vii) ISO 9001:1994 “Quality Systems—Model for Quality Assurance in Design/Development, Production, Installation, and Servicing,” and
(3) American Society for Testing and Materials':
(i) F 75-92 “Specification for Cast Cobalt-28 Chromium-6 Molybdenum Alloy for Surgical Implant Material,”
(ii) F 648-98 “Specification for Ultra-High-Molecular-Weight Polyethylene Powder and Fabricated Form for Surgical Implants,”
(iii) F 799-96 “Specification for Cobalt-28 Chromium-6 Molybdenum Alloy Forgings for Surgical Implants,”
(iv) F 1044-95 “Test Method for Shear Testing of Porous Metal Coatings,”
(v) F 1108-97 “Specification for Titanium-6 Aluminum-4 Vanadium Alloy Castings for Surgical Implants,”
(vi) F 1147-95 “Test Method for Tension Testing of Porous Metal,”
(vii) F 1378-97 “Standard Specification for Shoulder Prosthesis,” and
(viii) F 1537-94 “Specification for Wrought Cobalt-28 Chromium-6 Molybdenum Alloy for Surgical Implants.”