Medtronic G7002526 Instructions for Use

VERTEX® Reconstruction System M708348B445E Rev. B
2015-12-03
IMPORTANT INFORMATION ON THE VERTEX® RECONSTRUCTION SYSTEM
PURPOSE
The VERTEX® Reconstruction System is intended to help provide immobilization and stabilization of spinal segments as an adjunct to fusion of the craniocervical, cervical, and/or upper thoracic spine (occiput-T3).
DESCRIPTION
The VERTEX® Reconstruction System is a posterior system, which consists of a variety of shapes and sizes of plates, rods, hooks, screws, multi-axial screws, and connecting components, which can be rigidly locked to the rod in a variety of configurations, with each construct being tailor-made for the individual case. Titanium ATLAS™ cable may be used with this system at the surgeon’s discretion. See the package inserts of both of those systems for labeling limitations.
VERTEX NiTi). Shape Memory Alloy is compatible with titanium, titanium alloy, and cobalt chromium implants only. The posted screw connectors and some multi-axial screws contain elastomeric stakes made of silicone adhesive commonly used in implantable medical devices. Do not use with stainless steel. No warranties, express or implied, are made. Implied warranties of merchantability and fitness for a particular purpose or use are specifically excluded.
To achieve best results, do not use any of the VERTEX any other system or manufacturer unless specifically labeled to do so in this or another Medtronic document. As with all
orthopedic and neurosurgical implants, none of the VERTEX any circumstances.
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Reconstruction System is fabricated from medical grade titanium, medical grade titanium alloy, and medical
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Reconstruction System includes a retaining ring for the multi-axial screw made of Shape Memory Alloy (Nitinol –
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Reconstruction System implant components with components from
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Reconstruction System components should ever be reused under
INDICATIONS
The VERTEX® Reconstruction System is intended to provide immobilization and stabilization of spinal segments as an adjunct to fusion for the following acute and chronic instabilities of the craniocervical junction, 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; and 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 VERTEX 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 VERTEX Spinal System rods with the VERTEX® rod connectors. Transition rods with differing diameters may also be used to connect the VERTEX® Reconstruction System to the CD HORIZON insert for a list of the CD HORIZON
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Reconstruction System is also intended to restore the integrity of the spinal column
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Reconstruction System may be connected to the CD HORIZON
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Spinal System indications of use.
Spinal System. Refer to the CD HORIZON® Spinal System package
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CONTRAINDICATIONS
Contraindications include, but are not limited to:
Active infectious process or significant risk of infection (immunocompromise).Signs of local inflammation.Fever or leukocytosis.Morbid obesity.Pregnancy.Mental illness.Grossly distorted anatomy caused by congenital abnormalities.Any other medical or surgical condition which would preclude the potential benefit of spinal implant surgery, such as the
presence of congenital abnormalities, elevation of sedimentation rate unexplained by other diseases, elevation of white blood count (WBC), or a marked left shift in the WBC differential count.
Suspected or documented metal allergy or intolerance.Any case not needing a bone graft and fusion.Any case where the implant components selected for use would be too large or too small to achieve a successful result.Any patient having inadequate tissue coverage over the operative site or inadequate bone stock or quality.Any patient in which implant utilization would interfere with anatomical structures or expected physiological performance.Any patient unwilling to follow postoperative instructions.Any case not described in the indications.
NOTA BENE: Although not absolute contraindications, conditions to be considered as potential factors for not using this device include:
Severe bone resorption.Osteomalacia.Severe osteoporosis.
POTENTIAL ADVERSE EVENTS
All of the possible adverse events associated with spinal fusion surgery without instrumentation are possible. With instrumentation, a listing of potential adverse events includes, but is not limited to:
Early or late loosening of any or all of the components.Disassembly, bending, and/or breakage of any or all of the components.Foreign body (allergic) reaction to implants, debris, corrosion products (from crevice, fretting, and/or general corrosion),
including metallosis, staining, tumor formation, and/or autoimmune disease.
Pressure on the skin from component parts in patients with inadequate tissue coverage over the implant possibly causing
skin penetration, irritation, fibrosis, necrosis, and/or pain.
Bursitis.Tissue or nerve damage caused by improper positioning and placement of implants or instruments.Post-operative change in spinal curvature, loss of correction, height, and/or reduction.Infection.Dural tears, pseudomeningocele, fistula, persistent CSF leakage, meningitis.Loss of neurological function (e.g., sensory and/or motor), including paralysis (complete or incomplete), dysesthesias,
hyperesthesia, anesthesia, paresthesia, appearance of radiculopathy, and/or the development or continuation of pain, numbness, neuroma, spasms, sensory loss, tingling sensation, and/or visual deficits.
Neuropathy, neurological deficits (transient or permanent), paraplegia, paraparesis, reflex deficits, irritation, arachnoiditis,
and/or muscle loss.
Urinary retention or loss of bladder control or other types of urological system compromise.Scar formation possibly causing neurological compromise or compression around nerves and/or pain.Fracture, microfracture, resorption, damage, or penetration of any spinal bone (including the sacrum, pedicles, and/or
vertebral body), and/or bone graft or bone graft harvest site at, above, and/or below the level of surgery.
Retropulsed graft.Herniated nucleus pulposus, disc disruption or degeneration at, above, or below the level of surgery.Non-union (or pseudarthrosis), delayed union, or mal-union.Loss of or increase in spinal mobility or function.Inability to perform the activities of daily living.Bone loss or decrease in bone density, possibly caused by stresses shielding.Graft donor site complications including pain, fracture, or wound healing problems.Ileus, gastritis, bowel obstruction or loss of bowel control or other types of gastrointestinal system compromise.Hemorrhage, hematoma, occlusion, seroma, edema, hypertension, embolism, stroke, excessive bleeding, phlebitis, wound
necrosis, wound dehiscence, damage to blood vessels, or other types of cardiovascular system compromise.
Reproductive system compromise, including sterility, loss of consortium, and sexual dysfunction.Development of respiratory problems (e.g., pulmonary embolism, atelectasis, bronchitis, pneumonia, etc.).Change in mental status.Death.
Note: Additional surgery may be necessary to correct some of these potential adverse events.
WARNINGS AND PRECAUTIONS
A successful result is not always achieved in every surgical case. This fact is especially true in spinal surgery where many extenuating circumstances may compromise the results. This device system is not intended to be the sole means of spinal support. Use of this product without a bone graft or in cases that develop into a non-union will not be successful. No spinal implant can withstand body loads without the support of bone. In this event, bending, loosening, disassembly, and/or breakage of the device(s) will eventually occur.
Preoperative and operating procedures, including knowledge of surgical techniques, good reduction, and proper selection and placement of the implants are important considerations in the successful utilization of the system by the surgeon. Further, the proper selection and compliance of the patient will greatly affect the results. Patients who smoke have been shown to have an increased incidence of non-unions. These patients should be advised of this fact and warned of this consequence. Obese,
malnourished, and/or alcohol abuse patients are also poor candidates for spine fusion. Patients with poor muscle and bone quality and/or nerve paralysis are also poor candidates for spine fusion.
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 neurological impairment, fracture, dislocation, scoliosis, kyphosis, spinal tumor, and failed previous fusion (pseudoarthrosis). The safety and effectiveness of these devices for any other conditions are unknown.
Precaution: The implantation of spinal screw systems should be performed only by experienced spinal surgeons with specific training in the use of this spinal screw system because this is a technically demanding procedure presenting a risk of serious injury to the patient.
This system was designed for single patient use only. Never, under any circumstances, reuse a VERTEX® Reconstruction System device. Even when a removed device appears undamaged, it may have small defects or internal stress patterns that may lead to early breakage.
This system was designed for single patient use only. Never, under any circumstances, reuse a VERTEX® Reconstruction System device. Even when a removed device appears undamaged, it may have small defects or internal stress patterns that may lead to early breakage.
Precaution: The implantation of spinal fixation systems should be performed only by experienced spinal surgeons with specific training in the use of these spinal systems because this is a technically demanding procedure presenting a risk of serious injury to the patient. Preoperative planning and patient anatomy should be considered when selecting implant diameter and length.
Precaution: Pre-Operative Planning - Use of cross sectional imaging (i.e., CT and/or MRI) for posterior cervical screw placement is recommended due to the unique risks in the cervical spine. The use of planar radiographs alone may not provide the necessary imaging to mitigate the risk of improper screw placement. In addition, use of intraoperative imaging should be considered to guide and/or verify device placement, as necessary.
PHYSICIAN NOTE: Although the physician is the learned intermediary between the company and the patient, the important medical information given in this document should be conveyed to the patient.
FOR US AUDIENCES ONLY
CAUTION: FEDERAL LAW (USA) RESTRICTS THESE DEVICES TO SALE BY OR ON THE ORDER OF A PHYSICIAN.
IMPLANT SELECTION
The selection of the proper size, shape, and design of the implant for each patient is crucial to the success of the procedure. Metallic surgical implants are subject to repeated stresses in use, and their strength is limited by the need to adapt the design to the size and shape of human bones. Unless great care is taken in patient selection, proper placement of the implant, and postoperative management to minimize stresses on the implant, such stresses may cause metal fatigue and consequent breakage, bending or loosening of the device before the healing process is complete, which may result in further injury or the need to remove the device prematurely.
PREOPERATIVE
Only patients that meet the criteria described in the indications should be selected.Patient conditions and/or pre-dispositions such as those addressed in the aforementioned contraindications should be
avoided.
Care should be used in the handling and storage of the implant components. The implants should not be scratched or
otherwise damaged. Implants and instruments should be protected during storage especially from corrosive environments.
An adequate inventory of implants should be available at the time of surgery, normally a quantity in excess of what is
expected to be used.
Since mechanical parts are involved, the surgeon should be familiar with the various components before using the
equipment and should personally assemble the devices to verify all parts and necessary instruments are present before the surgery begins. The VERTEX
combined with the components from another manufacturer. Different metal types should never be used together.
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Reconstruction System components (described in the DESCRIPTION section) are not to be
All components and instruments should be cleaned and sterilized before use. Additional sterile components should be
available in case of an unexpected need.
INTRAOPERATIVE
Extreme caution should be used around the spinal cord and nerve roots. Damage to the nerves will cause loss of
neurological functions.
Breakage, slippage, or misuse of instruments or implant components may cause injury to the patient or operative personnel.The rods should not be repeatedly or excessively bent. The rods should not be reverse bent in the same location. Use great
care to ensure the implant surfaces are not scratched or notched, since such actions may reduce the functional strength of the construct. If the rods are cut to length, they should be cut in such a way as to create a flat, non-sharp surface perpendicular to the midline of the rod. Cut the rods outside the operative field. Whenever possible, use pre-cut rods of the length needed.
Whenever possible or necessary, an imaging system should be utilized to facilitate surgery.
To insert a screw properly, drill a pilot hole corresponding to selected screw size and prepare screw site.Caution: Do not overtap or use a screw that is either too long or too large. Overtapping or using an incorrectly sized screw
may cause nerve damage, hemorrhage, or the other possible adverse events listed elsewhere in this package insert.
Bone graft must be placed in the area to be fused and graft material must extend from the upper to the lower vertebrae
being fused.
Before closing the soft tissues, all screws or set screws should be tightened firmly. Recheck the tightness of all screws or
set screws after finishing to make sure none loosened during the tightening of the other screws or set screws. Failure to do so may cause loosening of other components.
POSTOPERATIVE
The physician's postoperative directions and warnings to the patient, and the corresponding patient compliance, are extremely important.
Detailed instructions on the use and limitations of the device should be given to the patient. If partial weight-bearing is
recommended or required prior to firm bony union, the patient must be warned that bending, loosening, and/or breakage of the device(s) are complications which may occur as a result of excessive or early weight-bearing or muscular activity. The risk of bending, loosening, or breakage of a temporary internal fixation device during postoperative rehabilitation may be increased if the patient is active, or if the patient is debilitated or demented. The patient should be warned to avoid falls or sudden jolts in spinal position.
To allow the maximum chances for a successful surgical result, the patient or devices should not be exposed to mechanical
vibrations or shock that may loosen the device construct. The patient should be warned of this possibility and instructed to limit and restrict physical activities, especially lifting and twisting motions and any type of sport participation. The patient should be advised not to smoke tobacco or utilize nicotine products, or to consume alcohol or non-steroidals or anti­inflammatory medications such as aspirin during the bone graft healing process.
The patient should be advised of their inability to bend or rotate at the point of spinal fusion and taught to compensate for
this permanent physical restriction in body motion.
Failure to immobilize a delayed or non-union of bone will result in excessive and repeated stresses on the implant. By the
mechanism of fatigue, these stresses can cause the eventual bending, loosening, or breakage of the device(s). It is important that immobilization of the spinal surgical site be maintained until firm bony union is established and confirmed by roentgenographic examination. If a state of non-union persists or if the components loosen, bend, and/or break, the device(s) should be revised and/or removed immediately before serious injury occurs. The patient must be adequately warned of these hazards and closely supervised to ensure cooperation until bony union is confirmed.
As a precaution, before patients with implants receive any subsequent surgery (such as dental procedures), prophylactic
antibiotics may be considered, especially for high-risk patients.
The VERTEX
designed to stabilize the operative site during the normal healing process. After the spine is fused, these devices serve no functional purpose and should be removed. While the final decision on implant removal is, of course, up to the surgeon and patient, in most patients, removal is indicated because the implants are not intended to transfer or support forces developed during normal activities. If the device is not removed following completion of its intended use, one or more of the following complications may occur: (1) Corrosion, with localized tissue reaction or pain; (2) Migration of implant position, possibly resulting in injury; (3) Risk of additional injury from postoperative trauma; (4) Bending, loosening, and breakage, which could make removal impractical or difficult; (5) Pain, discomfort, or abnormal sensations due to the presence of the device; (6) Possible increased risk of infection; (7) Bone loss due to stress shielding; and (8) Potential unknown and/or unexpected long term effects such as carcinogenesis. Implant removal should be followed by adequate postoperative management to avoid fracture, re-fracture, or other complications.
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Reconstruction System implants are temporary internal fixation devices. Internal fixation devices are
Any retrieved devices should be treated in such a manner that reuse in another surgical procedure is not possible. As with
all orthopedic implants, the VERTEX circumstances.
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Reconstruction System components should never be reused under any
PACKAGING
Packages for each of the components should be intact upon receipt. If a loaner or consignment system is used, all sets should be carefully checked for completeness and all components including instruments should be carefully checked to ensure there is no damage prior to use. Damaged packages or products should not be used, and should be returned to Medtronic.
CLEANING AND DECONTAMINATION
Unless just removed from an unopened sterile Medtronic package, all instruments and implants must be unpackaged, disassembled (if applicable), and cleaned before sterilization, before introduction into a sterile surgical field, or if applicable, before returning the product to Medtronic. Remove all packaging materials prior to disassembly (if applicable) and cleaning. Cleaning instructions and associated disassembly instructions (if applicable) can be found at
Note: certain cleaning solutions such as those containing formalin, glutaraldehyde, bleach, and/or other alkaline cleaners may damage some devices, particularly instruments (see “Medtronic Reusable Instruments” Instructions for Use – part number
0380035). Also, many instruments require disassembly before cleaning. All products should be treated with care. Improper use or handling may lead to damage and/or possible improper functioning of
the device.
www.medtronic.com/manuals
STERILIZATION
Unless marked sterile and clearly labeled as such in an unopened sterile package provided by the company, all implants used in surgery should be placed in the operative field. Unless specified elsewhere, these products are recommended to be steam sterilized by the hospital using one of the sets of process parameters in Table 1:
Table 1: Sterilization Cycle Parameters for the United States and Its Territories
METHOD CYCLE TEMPERATURE EXPOSURE TIME
Steam Gravity Displacement 250°F (121°C) 30 Minutes 30 Minutes Steam Gravity Displacement 270°F (132°C) 15 Minutes 30 Minutes Steam Gravity Displacement 275°F (135°C) 10 Minutes 30 Minutes Steam Dynamic-Air-Removal 270°F (132°C) 4 Minutes 30 Minutes Steam Dynamic-Air-Removal 275°F (135°C) 3 Minutes 16 Minutes
NOTE: Because of the many variables involved in sterilization, each medical facility should calibrate and verify the sterilization process (e.g., temperatures, times) used for their equipment. It is the end user’s responsibility to use only sterilizers and accessories (such as sterilization wraps, sterilization pouches, chemical indicators, biological indicators, and sterilization cassettes) cleared by the Food and Drug Administration (FDA) for the selected sterilization cycle specifications (time and temperature). The sterilization cycles listed in Table 2 are not considered by the FDA to be standard sterilization cycles.
*For Medical Facilities Located Outside the United States and its Territories. Some non-U.S. health care authorities recommend sterilization according to these parameters so as to minimize the potential risk of transmission of Creutzfeldt-Jakob disease, especially of surgical instruments that could come into contact with the central nervous system.
Table 2: Sterilization Cycle Parameters for Medical Facilities Outside the United States and Its Territories
METHOD CYCLE TEMPERATURE EXPOSURE TIME
Steam Gravity Displacement 273°F (134°C) 20 Minutes 30 Minutes Steam Dynamic-Air-Removal 273°F (134°C) 4 Minutes 30 Minutes Steam Dynamic-Air-Removal 273°F (134°C) 20 Minutes 30 Minutes
must be sterilized by the hospital prior to use. Remove all packaging materials prior to sterilization. Only sterile products
MINIMUM DRY TIME
MINIMUM DRY TIME
1
1
1
The minimum dry times were validated using sterilizers having vacuum drying capabilities. Drying cycles using ambient
atmospheric pressure may require longer dry times. Refer to the sterilizer manufacturer’s recommendations.
PRODUCT COMPLAINTS
Any health care professional (e.g., customer or user of this system of products) who has any complaints or who has experienced any dissatisfaction in the product quality, identity, durability, reliability, safety, effectiveness, and/or performance, should notify the distributor or Medtronic. Further, if any of the implanted spinal system component(s) ever “malfunctions” (i.e., does not meet any of its performance specifications or otherwise does not perform as intended), or is suspected of doing so, the distributor should be notified immediately. If any Medtronic product ever malfunctions and may have caused or contributed to the death or serious injury of a patient, the distributor should be notified immediately by telephone, fax, or written correspondence. When filing a complaint, provide the component(s) name and number, lot number(s), your name and address, the nature of the complaint, and notification of whether or not a written report from the distributor is requested.
MAGNETIC RESONANCE SAFETY
MR Conditional
Non-clinical testing has demonstrated that the VERTEX performed evaluating the VERTEX
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Reconstruction System in conjunction with and without the ATLAS® Cable system. A
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Reconstruction System is MR-conditional. The non-clinical testing was
patient with this device can be safely scanned in an MR system meeting the following conditions:
Static magnetic field of 1.5 Tesla or 3-Tesla.Maximum spatial gradient magnetic field of 3000 gauss/cm (30 T/m).Maximum MR system reported, whole body averaged specific absorption rate (SAR) of <2W/kg (Normal Operating Mode),
for a continuous 6 minutes of scanning per pulse sequence within a quadrature whole-body radiofrequency transmit coil.
Under the scan conditions defined above, the VERTEX temperature rise of less than 6.8°C after 6 minutes of continuous scanning.
In non-clinical testing, the image artifact caused by the device extends 25mm from the VERTEX imaged with a gradient echo pulse sequence in a 3.0 T MRI system.
The presence of other implants or the health state of the patient may require a modification of the MR conditions.
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Reconstruction System is expected to produce a maximum
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Reconstruction System when
MRI Patient Counseling Information
Physicians should communicate with the patient the following information about MR with respect to the VERTEX Reconstruction System:
VERTEX
3.0 Tesla.
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Reconstruction System performance has been established for MRI systems at field strengths of 1.5 Tesla and
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During an MRI, the patient may notice a warming sensation around the implant or feel a tingling sensation. If the warming or
tingling sensation is uncomfortable, the patient should communicate this to the MR technologist, the MRI should be stopped, and the settings adjusted to reduce or eliminate the sensation. The highest temperature change observed in non­clinical testing was +6.8ºC (associated with specific conditions listed above).
Additionally, the metal in the implant may cause the MRI image to be distorted in the area around the implant. The MRI can
be adjusted to minimize the image distortion.
Physicians should instruct patients to:
Inform any healthcare personnel (e.g. doctor or MR technologist) that they have an implanted posterior cervical-thoracic
fusion device prior to receiving an MRI.
The patient’s doctor will recommend whether or not an MRI is appropriate.
If VERTEX that this combination has not been tested in the MR environment and, therefore, higher heating and possible injury to the patient may occur.
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Reconstruction System in conjunction with and without the ATLAS® Cable system was tested in the MR
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Reconstruction System is used in connection with any other device which is not MR Conditional, please be advised
FURTHER INFORMATION
Recommended directions for use of this system (surgical operative techniques) are available at no charge upon request. If further information is needed or required, contact Medtronic.
©2015 Medtronic Sofamor Danek USA, Inc. All rights reserved.
AUSTRALIAN SPONSOR:
Medtronic Australasia Pty Ltd 97 Waterloo Rd North Ryde, NSW 2113 Australia
EXPLANATION OF SYMBOLS
Authorized representative in the European Community
CAUTION: Federal law (USA) restricts these devices to sale by or on the order of a physician.
Do not re-use
Batch code
Manufacturer
Catalogue number
Non-sterile
Medtronic Sofamor Danek USA, Inc.
1800 Pyramid Place Memphis, TN 38132 Telephone: 800 933 2635 (USA)
901 396 3133 (Outside USA)
Fax: 901 396 0356
Medtronic B.V.
Earl Bakkenstraat 10 6422 PJ Heerlen The Netherlands Tel: + 31 45 566 80 00
For US audiences only
The device complies with European Directive MDD 93/42/EEC
Sterilized using irradiation
Use-by date
MR Conditional
Consult instructions for use at this website.
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