Tibial and distal femoral cutting guide

en

2.3.1 ®

AESCULAP Tibial and distal femoral cutting guide

About this document

Note General risk factors associated with surgical procedures are not described in these instructions for use.

1.1

Fixation

inserted through the parallel holes marked 0.

Tibial revision cutting guide right Tibial revision cutting guide left Disassembly Holes for fixation pin Compression spring Push buttons Cutting slot Laser marking

1.

(see operating manual).

2.3.2

► Fasten the aligned cutting guide A or B on the bone with the fixation pins ∅ 3.2 mm (e.g. NP582R/NP583R)

Legend A B C 1 2 3 4 5

For intramedullary alignment

► Connect cutting guide A or B with adapter NE195R. ► Use components NP677R and NP678R to connect to the intramedullary rod or the reamer in the medullary cavity

Note Aesculap recommends additional fixation through the lateral, converging holes (see operating manual for the knee endoprosthesis). ► Resect the bone through cutting slot 4 in cutting guide A or B.

2.3.3

For unilaterally deeper resections at the tibia (step resections)

► Use cutting guide A or B. ► Apply the primary resection and remove the converging fixation pins. ► Move cutting guide A or B in the row of parallel holes in 2 mm steps proximal-distally. ► Resect again, applying the step resection. ► Remove the fixation pins and detach cutting guide A or B and universal alignment system NP608R from the

bone. ► Remove the resected bone.

Scope

These instructions for use apply to the following products:

3.

Validated reprocessing procedure

Art. no.

Designation

3.1

General safety instructions

NE196R

Tibial revision cutting guide right

NE197R

Tibial revision cutting guide left

Note Adhere to national statutory regulations, national and international standards and directives, and local, clinical hygiene instructions for sterile processing.

► For article-specific instructions for use as well as information on material compatibility and lifetime see B. Braun

eIFU at eifu.bbraun.com

1.2

Safety messages

Safety messages make clear the dangers to patient, user and/or product that could arise during the use of the product. Safety messages are labeled as follows: WARNING Indicates a possible threat of danger. If not avoided, minor or moderate injury may result. CAUTION Indicates a possible threat of material damage. If not avoided, the product may be damaged.

Note For patients with Creutzfeldt-Jakob disease (CJD), suspected CJD or possible variants of CJD, observe the relevant national regulations concerning the reprocessing of products. Note Mechanical reprocessing should be favored over manual cleaning as it gives better and more reliable results. Note Successful processing of this medical device can only be ensured if the processing method is first validated. The operator/sterile processing technician is responsible for this. Note If there is no final sterilization, then a virucidal disinfectant must be used.

2.

Clinical use

Note For up-to-date information about reprocessing and material compatibility, see B. Braun eIFU at eifu.bbraun.com The validated steam sterilization procedure was carried out in the Aesculap sterile container system.

2.1

Areas of use and limitations of use

3.2

2.1.1

Intended use

Dried or affixed surgical residues can make cleaning more difficult or ineffective and lead to corrosion. Therefore the time interval between application and processing should not exceed 6 h; also, neither fixating pre-cleaning temperatures >45 °C nor fixating disinfecting agents (active ingredient: aldehydes/alcohols) should be used. Excessive measures of neutralizing agents or basic cleaners may result in a chemical attack and/or to fading and the laser marking becoming unreadable visually or by machine for stainless steel. Residues containing chlorine or chlorides e.g. in surgical residues, medicines, saline solutions and in the service water used for cleaning, disinfection and sterilization will cause corrosion damage (pitting, stress corrosion) and result in the destruction of stainless steel products. These must be removed by rinsing thoroughly with demineralized water and then drying. Additional drying, if necessary. Only process chemicals that have been tested and approved (e.g. VAH or FDA approval or CE mark) and which are compatible with the product’s materials according to the chemical manufacturers’ recommendations may be used for processing the product. All the chemical manufacturer's application specifications must be strictly observed. Failure to do so can result in the following problems: ■ Optical changes of materials, e.g. fading or discoloration of titanium or aluminum. For aluminum, the application/process solution only needs to be of pH >8 to cause visible surface changes. ■ Material damage such as corrosion, cracks, fracturing, premature aging or swelling. ► Do not use metal cleaning brushes or other abrasives that would damage the product surfaces and could cause corrosion. ► Further detailed advice on hygienically safe and material-/value-preserving reprocessing can be found at www.ak-i.org, link to "AKI-Brochures", "Red brochure".

The asymmetric tibial cutting guides are used to ensure correct bone resection at the proximal tibia in endoprosthetic knee procedures. They are used for resecting the proximal tibia in the medial approach at the left or right knee, respectively.

2.1.2

Indications

Note The manufacturer is not responsible for any use of the product against the specified indications and/or the described applications. For indications, see Intended use.

2.1.3

Contraindications

No known contraindications.

2.2

Safety information

2.2.1

Clinical user

General safety information To prevent damage caused by improper setup or operation, and to not compromise the manufacturer warranty and liability: ► Use the product only according to these instructions for use. ► Follow the safety and maintenance instructions. ► Ensure that the product and its accessories are operated and used only by persons with the requisite training, knowledge and experience. ► Store any new or unused products in a dry, clean, and safe place. ► Prior to use, check that the product is in good working order. ► Keep the instructions for use accessible for the user. Note The user is obligated to report all severe events in connection with the product to the manufacturer and the responsible authorities of the state in which the user is located. Notes on surgical procedures It is the user's responsibility to ensure that the surgical procedure is performed correctly. Appropriate clinical training as well as a theoretical and practical proficiency of all the required operating techniques, including the use of this product, are prerequisites for the successful use of this product. The user is required to obtain information from the manufacturer if there is an unclear preoperative situation regarding the use of the product.

2.2.2

Sterility

The product is delivered in an unsterile condition. ► Clean the new product after removing its transport packaging and prior to its initial sterilization.

2.3

Application

WARNING Risk of injury and/or malfunction! ► Prior to each use, inspect the product for loose, bent, broken, cracked, worn, or fractured components. ► Always carry out a function test prior to each use of the product. WARNING Risks due to imprecise resections! ► Make sure that the cutting guide is stable while being inserted saw blade into the cutting guide. ► Do not bend the saw blade during the sawing procedure.

3.3

General information

Reusable products

Influences of the reprocessing which lead to damage to the product are not known. A careful visual and functional inspection before the next use is the best opportunity to recognize a product that is no longer functional, see Inspection.

3.4

Preparations at the place of use

► If applicable, rinse non-visible surfaces preferably with deionized water, with a disposable syringe for example. ► Remove any visible surgical residues to the extent possible with a damp, lint-free cloth. ► Transport the dry product in a sealed waste container for cleaning and disinfection within 6 hours.

3.5

Preparing for cleaning

► Disassemble the product prior to cleaning, see Disassembly.

3.6

Disassembly

Remove push buttons 3 from cutting guide A or B in the following way, see Fig. C: ► Insert a hexagon socket key size 3.5 mm (e.g. NP618R) into push-button 3 to be removed. ► Push the push button 3 against compression spring 2 into the cutting guide and turn it clockwise as far as it will go. ► Remove push button 3, with compression spring 2 attached, from the cutting guide.

3.7

Cleaning/Disinfection

3.7.1

Product-specific safety information on the reprocessing method

Damage to or destruction of the product due to inappropriate cleaning/disinfecting agents and/or excessive temperatures! ► Use cleaning and disinfecting agents following the manufacturer's instructions. ► Observe specifications regarding concentration, temperature and exposure time. ► Do not exceed the maximum allowable disinfection temperature of 95 °C.

3.7.2

► Note the information on appropriate cleaning brushes and disposable syringes, see Validated cleaning and dis-

Validated cleaning and disinfection procedure

infection procedure. Validated procedure

Specific requirements

Reference

Manual cleaning with ultrasound and immersion disinfection

■ Use a suitable cleaning brush:,

Chapter Manual cleaning/disinfection and subsection:

e.g. TA011327

■ Chapter Manual cleaning with

■ 20 ml disposable syringe ■ Drying phase: Use a lint-free

ultrasound and immersion disinfection

cloth or medical compressed air Manual pre-cleaning with brush and subsequent mechanical alkaline cleaning and thermal disinfection

■ Use a suitable cleaning brush:,

Chapter Mechanical cleaning/disinfection with manual pre-cleaning and subsection:

e.g. TA011327

■ 20 ml disposable syringe ■ Place the product in a tray that

■ Chapter Manual pre-cleaning with a brush

is suitable for cleaning (avoiding rinsing blind spots).

■ Chapter Mechanical alkaline cleaning and thermal disinfecting

■ Connect components with lumens and channels directly to the rinsing port of the injector carriage.

■ Keep working ends open for cleaning.

3.8

Phase I ► Fully immerse the product in the cleaning/disinfectant for at least 15 min. Ensure that all accessible surfaces are moistened. ► Clean the product with a suitable cleaning brush in the solution until all discernible residues have been removed from the surface. ► If applicable, brush through non-visible surfaces with an appropriate cleaning brush for at least 1 min. ► Mobilize non-rigid components, such as set screws, links, etc. during cleaning. ► Thoroughly rinse through these components with the cleaning disinfectant solution (at least five times), using a disposable syringe. Phase II ► Rinse/flush the product thoroughly (all accessible surfaces) under running water. ► Mobilize non-rigid components, such as set screws, joints, etc. during rinsing.

3.9.2

Mechanical alkaline cleaning and thermal disinfecting

Machine type: single-chamber cleaning/disinfection device without ultrasound Phase

Step

T [°C/°F]

t [min]

Water quality

Chemical

I

Prerinse

<25/77

3

D–W

-

II

Cleaning

55/131

10

FD-W

■ Concentrate, alkaline: – pH = 13 – <5 % anionic surfactant

Manual cleaning/disinfection

► Prior to manual disinfecting, allow water to drip off for a sufficient length of time to prevent dilution of the dis-

■ working solution 0.5%

infecting solution. ► After manual cleaning/disinfection, check visible surfaces visually for residues. ► Repeat the cleaning/disinfection process if necessary.

3.8.1

– pH = 11* III

Intermediate rinse

>10/50

1

FD-W

-

IV

Thermal disinfecting

90/194

5

FD–W

-

V

Drying

-

-

-

According to the program for cleaning and disinfection device

Manual cleaning with ultrasound and immersion disinfection

Phase

Step

T [°C/°F]

t [min]

Conc. [%]

Water quality

Chemical

I

Ultrasonic cleaning

RT (cold)

>15

2

D–W

Aldehyde-free, phenol-free, and QUAT-free concentrate, pH ~ 9*

II

Intermediate rinse

RT (cold)

1

-

D–W

-

III

Disinfection

RT (cold)

5

2

D–W

Aldehyde-free, phenol-free, and QUAT-free concentrate, pH ~ 9*

D–W: FD–W:

Drinking water Fully desalinated water (demineralized, low microbiological contamination: drinking water quality at least) *Recommended: BBraun Helimatic Cleaner alcaline ► Check visible surfaces for residues after mechanical cleaning/disinfecting.

IV

Final rinse

RT (cold)

1

-

FD-W

-

V

Drying

RT

-

-

-

-

3.10 Inspection ► Allow the product to cool down to room temperature. ► Dry the product if it is wet or damp.

3.10.1 Visual inspection ► Ensure that all soiling has been removed. In particular, pay attention to mating surfaces, hinges, shafts, recessed

D–W: FD–W:

Drinking water Fully desalinated water (demineralized, low microbiological contamination: drinking water quality at least) RT: Room temperature *Recommended: BBraun Stabimed fresh ► Note the information on appropriate cleaning brushes and disposable syringes, see Validated cleaning and dis-

infection procedure. Phase I ► Clean the product in an ultrasonic cleaning bath (frequency 35 kHz) for at least 15 min. Ensure that all accessible surfaces are immersed and acoustic shadows are avoided. ► Clean the product with a suitable cleaning brush in the solution until all discernible residues have been removed from the surface. ► If applicable, brush through non-visible surfaces with an appropriate cleaning brush for at least 1 min. ► Mobilize non-rigid components, such as set screws, links, etc. during cleaning. ► Thoroughly rinse through these components with the cleaning disinfectant solution (at least five times), using a disposable syringe. Phase II ► Rinse/flush the product thoroughly (all accessible surfaces) under running water. ► Mobilize non-rigid components, such as set screws, joints, etc. during rinsing. ► Drain any remaining water fully.

areas, drill grooves and the sides of the teeth on rasps. ► If the product is dirty: repeat the cleaning and disinfection process. ► Check the product for damage, e.g. insulation or corroded, loose, bent, broken, cracked, worn or severely

scratched and fractured components. ► Check the product for missing or faded labels. ► Check the surfaces for rough spots. ► Check the product for burrs that could damage tissue or surgical gloves. ► Check the product for loose or missing parts. ► Immediately put aside damaged or inoperative products and send them to Aesculap Technical Service, see Tech-

nical service.

3.10.2 Functional test CAUTION Damage (metal cold welding / friction corrosion) to the product caused by insufficient lubrication! ► Prior to function checks, lubricate moving parts (e.g. joints, pusher components and threaded rods) with maintenance oil suitable for the respective sterilization process (e.g. for steam sterilization: STERILIT® I oil spray JG600 or STERILIT® I drip lubricator JG598). ► Assemble disassembled products, see Assembly. ► Check that the product functions correctly. ► Check that all moving parts are working properly (e.g. hinges, locks/latches, sliding parts etc.). ► Check for compatibility with associated products. ► Immediately put aside inoperative products and send them to Aesculap Technical Service, see Technical service.

Phase III ► Fully immerse the product in the disinfectant solution. ► Mobilize non-rigid components, such as set screws, joints, etc. during rinsing. ► Rinse lumens at least five times at the beginning of the exposure time with an appropriate disposable syringe. Ensure that all accessible surfaces are moistened.

3.11 Assembly

Phase IV ► Rinse/flush the product thoroughly (all accessible surfaces) under running water. ► Mobilize non-rigid components, such as set screws, joints, etc. during final rinse. ► Rinse lumens with an appropriate disposable syringe at least five times. ► Drain any remaining water fully.

► Insert push button 3 on hexagon socket key size 3.5 mm, see Fig. C. ► Position push button 3 on the cutting guide.

Phase V ► Dry the product in the drying phase with suitable equipment (e.g. cloth, compressed air), see Validated cleaning and disinfection procedure.

3.9

Mechanical cleaning/disinfection with manual pre-cleaning

Note The cleaning and disinfection device must be of tested and approved effectiveness (e.g. FDA approval or CE mark according to DIN EN ISO 15883). Note The cleaning and disinfection device used for processing must be serviced and checked at regular intervals.

The positioning is correct if the laser markings 5 are in matching positions. ► Slide in push button 3 against the pressure of compression spring 2 into the hole provided in the cutting guide,

and turn it clockwise as far as it will go. ► Extract the hexagon socket key from push button 3.

Compression spring 2 slightly pushes out push button 3 from the cutting guide.

3.12 Packaging ► Place the product in its holder or on a suitable tray. Ensure that sharp edges are covered. ► Package trays appropriately for the sterilization process (e.g. in Aesculap sterile containers). ► Ensure that the packaging provides sufficient protection against contamination of the product during storage.

3.13 Steam sterilization ► Check to ensure that the sterilizing agent will come into contact with all external and internal surfaces (e.g., by

opening any valves and faucets). ► Validated sterilization process

3.9.1

Manual pre-cleaning with a brush

Phase

Step

T [°C/°F]

t [min]

Conc. [%]

Water quality

Chemical

I

Disinfecting cleaning

RT (cold)

>15

2

D–W

Aldehyde-free, phenol-free, and QUAT-free concentrate, pH ~ 9*

II

Rinsing

RT (cold)

1

-

D–W

-

D–W: Drinking water RT: Room temperature *Recommended: BBraun Stabimed fresh

CAUTION Damage to cutting guide or push button due to incorrect assembling! ► Carefully slide the push button into the cutting guide.

– Steam sterilization using fractional vacuum process – Steam sterilizer according to DIN EN 285 and validated according to DIN EN ISO 17665 – Sterilization using fractionated vacuum process at 134 °C/holding time 5 min ► If several devices are sterilized at the same time in the same steam sterilizer: Ensure that the maximum permitted load according to the manufacturers’ specifications is not exceeded.

3.14 Storage ► Store sterile products in germ-proof packaging, protected from dust, in a dry, dark, temperature-controlled area.

4.

Technical service

CAUTION Modifications carried out on medical technical equipment may result in loss of guarantee/warranty rights and forfeiture of applicable licenses. ► Do not modify the product. ► For service and repairs, please contact your national B. Braun/Aesculap agency. Service addresses Aesculap Technischer Service Am Aesculap-Platz 78532 Tuttlingen / Germany Phone: +49 7461 95-1601 Fax: +49 7461 16-2887 E-Mail: [email protected] Other service addresses can be obtained from the address indicated above.

5.

Disposal

WARNING Risk of infection due to contaminated products! ► Adhere to national regulations when disposing of or recycling the product, its components and its packaging. Note The user institution is obliged to reprocess the product before its disposal, see Validated reprocessing procedure. TA020011

2021-06

Change No. AE0060742