Medtronic C01B Instructions for Use

Kyphon™ HV-R™ (High Viscosity,
M708348B154E Rev. F
Radiopaque) Bone Cement
2021-10-18
IMPORTANT INFORMATION ON KYPHON™ HV-R™ (HIGH VISCOSITY, RADIOPAQUE) BONE CEMENT
Carefully read all instructions prior to use.
INDICATIONS FOR USE
When used in conjunction with CD Horizon™ Fenestrated Screws, Kyphon™ HV-R™ Bone Cement is intended to restore integrity of the spinal column even in the absence of fusion for a limited time in patients with advanced stage tumors involving the thoracic, lumbar, or sacral spine in whom life expectancy is of insufficient duration to permit achievement of fusion. CD Horizon™ Fenestrated Screws augmented with Kyphon™ HV-R™ Bone Cement are for use at spinal levels where the structural integrity of the spine is not severely compromised.
DESCRIPTION
Kyphon™ HV-R™ Bone Cement is a polymethylmethacrylate (PMMA) that contains approximately 30% barium sulfate. It is designed for delivery in a highly viscous state.
Table 1: Nominal Composition of Kyphon™ HV-R™ Bone Cement: (Actual weight percentages of individual components will vary within accepted ranges.)
Powder (20g of sterile powder in a packet) Liquid (9.0g of sterile liquid in a vial)
Methylmethacrylate-styrene-copolymer 68.0% w/w Methylmethacrylate (monomer) 99.1% w/w Barium sulfate 30.0% w/w N, N-dimethyl-p-toluidine 0.9% w/w Benzoyl peroxide 2.0% w/w Hydroquinone 75 ppm
For US Audiences Only
Caution: Federal law (USA) restricts this device to sale by or on the order of a physician.
CONTRAINDICATIONS
PMMA bone cement is contraindicated in the presence of active or incompletely treated infection at the site where bone cement is to be applied for treatment of non-pathological, acute, traumatic fractures of the vertebra or sacrum, and in cases involving either displaced sacral fractures or compromise of the sacral foramina.
WARNINGS
The sterile Kyphon™ HV-R™ Bone Cement is designed and intended for one time use only. Do not re-sterilize and/or re-
use. Sterility is assured only if the unit container is not damaged.
Maintain aseptic surgical technique to prevent possible infection including treatment site infection.Monitor patients carefully for any change in blood pressure during and immediately following the application of bone
cement. Adverse patient reactions affecting the cardiovascular system, including Bone Cement Implantation Syndrome (BCIS), have been associated with the use of bone cements. Hypotensive reactions have occurred between 10 and 165 seconds following application of bone cement. The reactions lasted from 30 seconds to 5 or more minutes. Some have progressed to cardiac arrest. Patients should be monitored carefully for any change in blood pressure during and immediately following the application of bone cement, especially those potentially at increased risk for peri-operative death including elderly patients, patients with underlying cardiac or pulmonary compromise, and patients being treated for multiple vertebral body fractures in one procedure.
Cement leakage may cause tissue damage, nerve or circulatory problems, and other serious adverse events. These risks
may increase with the number of spinal levels where bone cement is used, and also with the volume of bone cement used.
Caution should be exercised during the mixing of the two components to prevent excessive exposure to concentrated
vapors of the monomer, which may produce irritation of the respiratory tract, eyes, and possibly liver.
Polymerization of bone cement is an exothermic reaction which occurs while the cement is hardening in situ. According to
the ISO 5833 standard, the temperature can be as high as 90°C ± 5°C. Released heat may damage bone or other tissues surrounding implants.
The liquid component is a powerful lipid solvent. It should not be allowed to come into contact with rubber or latex gloves.
Should contact occur, gloves may dissolve and tissue damage may occur. Wearing a second pair of gloves and adherence to mixing instructions may diminish the possibility of hypersensitivity reactions. Mixed bone cement should not make contact with the gloved hand until bone cement is being tested for the consistency of dough.
Personnel wearing permeable contact lenses should not be near or involved in mixing bone cement. Soft contact lenses are
permeable.
Handling characteristics of bone cement are affected by operating room conditions including room temperature,
temperature of cement components prior to mixing, humidity, geometry of the mixing apparatus, time spent mixing, and geometry of the delivery device. Changes in one or more of these conditions can alter handling characteristics of bone cement, including:
Handling period - time it takes for the bone cement to reach the doughy state. Cement has reached the doughy state
when it no longer sticks to surgical gloves.
Working period - time bone cement remains in the doughy state and can be delivered.Hardening period - time needed for bone cement to harden or until it can no longer be delivered.
Users must be aware of these factors and adjust technique to account for variability in operating room conditions.
Avoid over-pressurization of bone cement and do not insert bone cement into the cavity of the vertebral body until bone
cement has reached the doughy state. Cement has reached the doughy state when it no longer sticks to surgical gloves. Maintain patient positioning until the end of the polymerization process. Failure to do so may lead to extravasation of bone cement beyond the site of its intended application and may or could damage surrounding tissues.
Safety of bone cement in pregnant women or in children was not established. Bone cement may adversely affect bone
growth and fetal health.
Difficulty in swallowing and blistering of the throat, alleged to be an allergic reaction to the use of bone cement, have also
been reported.
Do not mix more than one vial of liquid and one packet of powder together at any one time. Never modify ratios between
liquid and solid components. Doing so can affect bone cement properties including handling characteristics.
Long-term follow-up is advised for all patients on a regularly scheduled basis. Inadequate filling or unanticipated
postoperative events may affect stability of bone cement and/or the bone cement-bone interface. A fibrous tissue layer may develop between cement and the bone and loosening of bone cement may occur leading to failure.
Kyphon™ HV-R™ Bone Cement is provided in finished form with all necessary components for use. The addition of a
radiopacifier (e.g. barium, antibiotics, or other drugs or materials) to Kyphon™ HV-R™ Bone Cement is not recommended. Never add other substances or foreign bodies to the acrylic resin. Safety and effectiveness of adding such drugs or materials was not evaluated and may cause patient harm.
Modifying polymerization time by either warming or cooling bone cement and/or associated delivery devices was not tested
and could affect bone cement properties including handling characteristics.
PRECAUTIONS
Keep the product at a temperature of 23 ± 1°C for a period of 24 hours prior to use.Never deliver bone cement into the vertebral body without the use of high quality fluoroscopic guidance capable of
visualizing movement of bone cement.
Only physicians thoroughly trained in pedicle screw placement, and the surgical use of bone cement and balloon
kyphoplasty should use Kyphon™ HV-R™ Bone Cement. Users should have specific training and be familiar with properties, handling characteristics, and application of bone cement and adhere to instructions for use.
Do not use after the expiration date printed on the package. The device may not be safe or effective beyond its expiration
date.
Do not use if package is opened or damaged because product integrity including sterility may be compromised.Do not use damaged products. Prior to use, inspect the packaging and product to verify no damage has occurred.Follow mixing and handling instructions to avoid contact dermatitis. Strict adherence to instructions for mixing powder and
liquid components may reduce the incidence of this complication.
Adequately ventilate the operating room to eliminate as much monomer vapor as possible. Liquid monomer is highly volatile
and flammable. Ignition of monomer fumes caused by use of electrocautery devices in surgical sites near freshly implanted bone cements has been reported.
Dispose of the polymer component in an authorized waste facility. The liquid component can be evaporated under a well-
ventilated hood or absorbed by an inert material and transferred in a suitable container for disposal.
Use imaging techniques during needle placement and during injection. Extravasation can occur during cement injection if
the needle is in an artery or vein, or if unseen microfractures are prevalent. Embolization can also occur if the needle is placed in an artery or vein. Cement extravasation may cause tissue damage, nerve or circulatory problems, and increase risk for future fractures.
If bone cement is seen outside of the vertebral body/sacrum or in the circulatory system during the procedure, immediately
stop the injection.
Ensure immediate surgical support is available for urgent surgery if required.
ADVERSE EVENTS
Serious adverse events, some with fatal outcome, associated with the use of acrylic bone cements in the spine or intended for vertebroplasty or kyphoplasty include:
Cardiac arrest.Cerebrovascular accident.Myocardial infarction.Pulmonary embolism.Cardiac embolism.
Although the majority of these adverse events present early within the post-operative period, there have been some reports of diagnoses beyond a year or more after the procedure.
Other reported adverse events relevant to the anatomy being treated with acrylic bone cements intended for use in spine, or vertebroplasty or kyphoplasty include:
Leakage of bone cement beyond the site of its intended application with introduction into the vascular system resulting in,
but not limited to, embolism of the lung and/or heart or other clinical sequelae.
Deep or superficial wound infection.Fistula.Hematoma.Hemorrhage.Heterotopic new bone formation.Extravasation of bone cement beyond the site of its intended application potentially resulting in but not limited to:
compression or irritation of nerve structures, such as the spinal cord or nerve roots, causing radiculopathy, parasthesia,
paraplegia or paralysis and/or;
introduction into the vascular system resulting in embolism of the lung and/or heart or other clinical sequelaePyrexia due to allergy to bone cement.Short-term conduction irregularities.Thrombophlebitis.Transitory fall in blood pressure.Migration of hardened bone cement bolus.Extravasation of bone cement into sacral foramen or sacroiliac joint potentially resulting in, but not limited to:
compression or irritation of sacral nerve structures causing radicular pain
sacroiliac joint dysfunction
INSTRUCTIONS FOR THE PREPARATION AND CLINICAL USE OF Kyphon™ HV-R™ BONE CEMENT
Timing for the Preparation and Application of Kyphon™ HV-R™ Bone Cement
Handling characteristics of bone cements are affected by operating room conditions, including room temperature, temperature of cement components prior to mixing, humidity, geometry of the mixing apparatus, time spent mixing, and geometry of the delivery device. Changes in one or more of these conditions can alter handling characteristics of bone cement, including:
Handling period - time it takes for bone cement to reach the doughy state. Cement has reached the doughy state when it no
longer sticks to surgical gloves.
Working period - time bone cement remains in the doughy state and can be delivered.Hardening period - time needed for bone cement to harden or until it can no longer be delivered.
Users must be aware of these factors and adjust technique to account for variability in operating room conditions. Under specific conditions in our laboratory, Kyphon™ HV-R™ Bone Cement had the following dough time, hardening time, and working period, using Kyphon™ Bone Filler Devices, which allowed sufficient time for minimally invasive surgical introduction of bone cement.
Average Room Temperature at Start of Mixing (±1°C)
15 23.8 40.0 16.2 19 14.0 33.8 19.8 22 9.5 17.9 8.4 23 8.9 19.3 10.4 25 7.6 18.4 10.8 29 4.6 12.3 7.7
Lower temperatures or other changes in operating room conditions can increase handling, doughy (working), and hardening periods. Conversely, higher temperatures or other changes in operating room conditions can decrease handling, doughy (working), and hardening periods.
Average Dough Time (minutes)
Average Hardening Time (minutes)
Average Working Period (minutes)
Handling Characteristics of Kyphon™ HV-R™ Bone Cement at 23±1°C in our Laboratory
Period Activity Approximate Cumulative Time From Initiation of Mixing*
Mixing Mix liquid and powder 0-2 minutes Handling Transfer into delivery system 2-8 minutes Working (doughy state) Fill cavity in vertebral body 8-16 minutes Hardening Wait before completing procedure 16-20 minutes
Note: these cumulative time periods vary depending on temperature and other factors. For example, the colder the environment, the longer the time necessary for the cement to develop the required doughy consistency. Warmer temperatures require more rapid preparation and handling (see Figure 1). Ensure cement’s viscosity is high enough (doughy) before delivery. Cement has reached the doughy state when it no longer sticks to surgical gloves.
* These times are based on cement prepared by Medtronic. Times were obtained from bone cement mixed in a Kyphon™ Mixer and delivered through a Kyphon™ Bone Filler Device (inner diameter = 0.114”). Times may vary when other mixing methods, delivery devices, and/or vacuum are used.
Dough time Hardening time
Time (min)
Temperature (°C)
Figure 1. The effect of room temperature on handling characteristics of Kyphon™ HV-R™ Bone Cement is shown in Figure 1.
At room temperatures of 15, 19, 23, 25 and 29°C, units of Kyphon™ HV-R™ Bone Cement were mixed in a Kyphon™ Mixer and transferred to Kyphon™ Bone Filler Devices (BFD, size 3). Dough time and hardening time were measured. The dashed line represents dough time (when dispensed cement no longer sticks to a surgical glove) and the solid line represents hardening time (when cement is too hard to dispense).
Preparation Procedures
Per the note above, temperature can affect handling of cement. Prior to use, keep the product at a temperature of 23 ± 1°C
for a period of 24 hours.
Prior to use, Kyphon™ HV-R™ Bone Cement packaging should be examined for damage and the presence of all required
components.
Maintain aseptic transfer surgical technique to prevent possible infection.Maintain strict adherence to instructions for mixing powder and liquid to prevent possible dermatitis from the liquid monomer
during handling.
Ensure inner package is undamaged, powder is not discolored (yellow or brown), and liquid is not syrupy. These conditions
indicate the product was not stored correctly.
Ensure preparation accessories are specifically compatible with bone cement product.Do not open the vial of liquid over the mixing bowl to avoid risk of glass fragments entering the dough.Never add other substances or foreign bodies to acrylic resin. Never modify ratios between liquid and solid components.Care should be taken when mixing liquid and powder components so the entire contents of the vial and packet are used.
Liquid monomer and powder component should be thoroughly mixed.
Mixing Procedure:
1. Always use sterile technique when mixing bone cement.
2. Open powder packet and break open the vial. Immediately combine powder and liquid into a mixing bowl or Kyphon™
Mixer.
3. When using the Kyphon™ Mixer, follow Kyphon™ Mixer instructions for use.
4. When mixing by hand, mix with a spatula until ingredients are smoothly and uniformly combined (approximately one minute
or longer as necessary). The liquid must moisten all the powder. Use the spatula to carefully work any lumps of non­moistened powder into the overall mass of moist dough.
5. After powder and liquid are thoroughly mixed, the transfer of the mixture into a cement delivery device(s) may begin. Allow for complete dissolution of powder into liquid prior to transferring the bone cement into the cement delivery device(s). This can take up to approximately 8 minutes after the start of mixing.
Clinical Application Procedures (Cementoplasty or Sacroplasty)
When bone cement is in a doughy state, it has reached the appropriate level of viscosity and is ready to be placed into the pathological fracture. Do not insert bone cement into the vertebral body until bone cement has reached the doughy state. Cement has reached the doughy state when it no longer sticks to surgical gloves.
1. Before delivery, dispense a small sample of bone cement from the delivery device to ensure proper viscosity. Bone cement is not ready to deliver until it does not drip from the cement delivery device, does not stick to surgical gloves, and has lost its sheen.
2. Delivery of bone cement into the vertebral body should begin in the anterior or central region of the vertebral body. Continue by allowing bone cement to flow into the posterior area without moving the delivery device posteriorly. Care should be taken to avoid placing the delivery device against the anterior cortex.
3. While bone cement hardens, it is important to maintain patient positioning until the end of the polymerization or hardening process.
Recommended directions for use of this system (surgical operative techniques) are available at no charge upon request.
Clinical Application Procedures (Pedicle Screw Augmentation)
When bone cement is in a doughy state, it has reached the appropriate level of viscosity and is ready to be placed into the CD Horizon™ Fenestrated Screw. Do not insert bone cement into the fenestrated screw until bone cement has reached the doughy state. Cement has reached the doughy state when it no longer sticks to surgical gloves.
1. Before delivery, dispense a small sample of bone cement from the delivery device to ensure proper viscosity. Bone cement is not ready to deliver until it does not drip from the cement delivery device, does not stick to surgical gloves, and has lost its sheen.
2. When viscosity is correct, cement can be injected following the screw surgical technique.
3. While bone cement hardens, it is important to maintain patient positioning until the end of the polymerization or hardening
process.
HOW SUPPLIED
Kyphon™ HV-R™ Bone Cement is supplied sterile. The powder and package are sterilized with gamma radiation. The liquid is sterilized using filtration and is contained in a glass vial. The outside of the glass vial is sterilized with ethylene oxide gas. This device is intended for single use only. Do not reuse, reprocess, or resterilize this product. Reuse, reprocessing, or resterilization may compromise the structural integrity of the device and/or create a risk of contamination of the device, which could result in patient injury, illness, or death. Do not use if package is open or damaged.
STORAGE
Kyphon™ HV-R™ Bone Cement should be stored in its original shipping materials. Proper care should be taken to ensure Kyphon™ HV-R™ Bone Cement will not be damaged. Store below 25°C and away from sunlight.
LIMITATION OF LIABILITY
Medtronic will not be responsible for any direct, indirect, consequential, or exemplary damages resulting from reuse of Kyphon™ HV-R™ Bone Cement.
In no event shall Medtronic be liable for any direct, indirect, incidental, consequential, or exemplary damages arising out of or in connection with Kyphon™ HV-R™ Bone Cement, based upon breach of contract (including breach of warranty).
PRODUCT COMPLAINTS
For product problems, contact Medtronic.
FURTHER INFORMATION
Recommended directions for use of this system (surgical operative techniques) are available at no charge upon request. If further information is required, contact Medtronic.
©2021 Medtronic Sofamor Danek USA, Inc. All rights reserved.
MANUFACTURED FOR:
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
EXPLANATION OF SYMBOLS
Flammable
Sterilized using ethylene oxide (Liquid Package)
Sterilized using aseptic processing techniques (Liquid)
Sterilized using irradiation (Powder)
Manufacturer
Date of manufacture
Batch Code
Catalog number
Do not re-use
Use-by date
Keep away from sunlight
Caution, Consult Accompanying Documents
Do not resterilize
25°C
Store below 25°C
Do not use if package is damaged and consult instructions for use
For US audiences only
Consult instructions for use at this website.
*Single sterile barrier system
Double sterile barrier system
Single sterile barrier system with protective packaging inside
Single sterile barrier system with protective packaging outside
*Single barrier packaging systems may not contain a sterile barrier system symbol. Per ISO 11607-1, a symbol is only required if more than one barrier is present.
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