Frequently asked questions

I’m using the Air-Lock for the first time. What parts do I need to order? 

You will need to order the following components:

1) A package of pins
2) A lock wrench
3) A connector (Alignable connector or a One-Shot Connector)
4) An Insert (Single directional or Multi directional)

What material do you recommend for a check/test socket?

We recommend using either Co-Poly, Vivak, or MPE for your check socket.

Is the Air-Lock water resistant? What kind of maintenance is required when it is used in water?

Yes, the Air-Lock is water-resistant. We recommend rinsing the lock and components when used in saltwater, chlorine, or in an environment that contains dirt, sand, and grit.  See our video here on Patient Maintenance instructions.

*NOTE: A prosthetist may need to remove the lock mechanism and blow out the lock housing with an air hose.

Do I need to use a sleeve with the Air-Lock?

There is no need to use a suspension sleeve with the Air-Lock, as long as you have a full contact socket. 

When you fabricate with the Air-Lock, you are sealing off the bottom of the socket. No air is getting in from the bottom of the socket, creating suction in the socket. Air will still wick around the top of the socket, but it’s not being ‘forced’ into the socket meaning that the socket stays airtight.

*NOTE: If you opt to use a sleeve, an expulsion valve is needed.

What liners do you recommend for the Air-Lock?

Any liner that accepts a 10mm pin (6mm pins are also available).  Fabric or Non-Fabric Backed liners both work well.

What are the L-Codes for the Air-Lock?

L5671, *L5647, and *L5652 

*NOTE: The billing codes listed should not be construed as a guarantee for coverage or payment.  Ultimate responsibility for the coding of products/services rests with the individual practitioner. *L5647 and L5652 are not recommended for billing Medicare.

Can you use vacuum with the Air-Lock? 

The Air-Lock will not hold the pressure of vacuum, because the release button will get sucked in actually release the pin

The Easy-Off Lock has a unique lever release and is the only lock that can hold the ‘pressure’ of vacuum. 

Why am I getting a whooshing or squeaking noise?

A “whooshing” noise means the socket may not be properly sealed at the bottom because there is a gap between the top of the valve body and the top of the funnel allowing air to flow into the socket.

To test this, run some water through the socket to see where it is leaking. If that is the issue simply seal off the inside of the socket where the outer circle of the lock touches the socket. Adding a CQL Auto Expulsion Valve to the socket may also help.

A squeaking or clicking noise that repeats with every step, means the alignment may be off with the socket. You may need to add or remove spacers. If the patient is wearing socks, the metal end of the liner may be too long for the recess in the lock and it will ride on the inside of the lock and make the squeaking noise. To Fix: Try using a brass pin or put a P-Lite donut on the end of the liner

I didn’t have a Housing O-Ring in my package. Is there supposed to be one with the Air-Lock package?

Our company determined the Housing O-Ring was not needed; the part is discontinued and not packaged with the Air-Lock.

Can I shorten/grind down the Release Button?

Yes, you can grind the release button to shorten it to the desired length.

*NOTE: It’s important that you leave at least up to ¼” inch remaining above the edge of the valve body to still ensure functionality.

What if my patient has difficulty pushing the Release Button?

There is a Release Button Cover (CD103RBC) available that can be glued on with a gel-type super glue that provides a larger area for the patient’s hand to push for release.

*NOTE-Do not shorten the Release Button less than 7/16” in length if you want to attach the Release Button Cover. If the release button was shortened too much, they can be replaced.

Which pins do I use with the Air-Lock?

For the Air-Lock: 8 Click Pins: CD103P8 (two part pin) or CD103P8H (solid brass)

For the DEEP Air-Lock:  11 Click Pins CD103P11 (two part pin) or CD103P11H (solid brass)

*NOTE: 11-click pins should ONLY be used with the Deep Air Lock.

Parts are available to modify locks in existing sockets if the pin is bottoming out in the lock. To modify the lock you will need the Guide Pin (CD103GPN) and Pin Cap (CD103PC) and Coyote QUIK Glue.

Also: Loctite Blue 242 must be used on lock pin threads after determining the appropriate lock pin spacing.

Is there a Drop-In Air-Lock?

Yes, Drop-In Air-Locks are now available for the Air-Lock CD122A and the Easy-Off Lock CD122E

 *NOTE: The lamination dummy is a separate purchase: 

  • Drop-In Air-Lock Fabrication Dummy part #: CD122AFD

Drop-In Easy-Off Fabrication Dummy part #: CD122EFD

What pin do I use for my Air-Lock if my liner has a different thread?

If you need a ¼ x 20 thread, please order part #: CD103PQ

If you need a 6mm thread, please order part #: CD103PX

Are there any weight restrictions for the Air-Lock? Can I put a patient who weighs over 350 lbs. in an Air-Lock?

Our locks are rated and tested up to 265 lbs. Contact our office for any questions. 

*NOTE: The strength is in the lamination, not just reliant on the lock component.

Can I use the Keasy Cone with the Deep Air-Lock (CD103D) instead of thermoplastic?

Yes, it’s fine to use a Keasy Cone.

I have a stroke patient who is having trouble engaging the pin into the Air-Lock. They are having difficulty getting the pin in straight. Any tips or suggestions to address the issue?

First, please ensure that the lock alignment is where it should be and/or the liner is being rolled on the way it should. A long pin might be needed. In extreme cases the Locking Lanyard (part #: CD103L) may be the best option for this type of patient/situation.  The lanyard pin helps to elongate the limb when donning, making it easier for the patient to engage.

The patient has a plastic on plastic sound with a brand new Air-Lock.  They are using the standard pin and have tried adding spacers and removing/adding a sock to deal with sound issues. Nothing seems to be working for the long term. Please help!

The first things to ask and analyze are the following: What liner, what socks, and what pin spacers are being used? Sometimes the liner bottoms out on the inner part of the lock funnel rather than outer. This can be confirmed by putting a P-Lite donut on bottom of liner when engaging. The brass pin can also be tried. You can also look for marks on the lock funnel.

I’m concerned about the possibility of accidental opening of the Air-Lock by hitting the release button on something and having a patient fall.  

The odds are very low in normal day-to-day activities that would cause the release button to be ‘bumped’ and cause the pin to disengage. The suction aspect of the lock helps reduce the risk even further. However, activities such as horseback riding, or motorcycle riding do present scenarios where it may be possible that the pin could disengage. If this is a serious concern the practitioner may consider using an Easy-Off Lock (CD117) instead of the Air-Lock.

I have a patient that is an avid rock climber and needs something to prevent the lock from being released during this activity, something that doesn’t stick out and can get stuck.

The best lock we have for this and similar activity levels would be the Easy-Off Lock (CD117). The lever release is different, and you wouldn’t need to worry about ‘bumping’ it.

*NOTE: You could still use the Air-Lock (CD103) and you can fabricate a deep recessed button using the Exo Lamination Plug (CD103ELD).  You can find more info on our website here. Another option would be to cap the button with the Release Button Cover (CD103RBC). The Air-Lock is hard to release, and it’s easy to build up around the button to further prevent this, and or done in the lamination with the Exo Lamination Plug.

What pins should I use (brass vs. standard) that decrease the shuttle being worn down?

The brass pin is stronger, and better for higher activity patients or heavy-duty patients. It is also corrosion resistant.

I used the Air-Lock (CD103) in a check socket and it worked great. When I transferred it to the definitive socket if worked great at first but soon after developed a ‘clicking noise’. I took the lock out and the noise was gone. Question: What could be the cause of the noise?

In a new lamination, it is worth checking the lock housing for resin, sometimes that will leak into the lock and you end up with a thin layer of resin that causes issues. Because of the anchor, it is really thin and can be unnoticed. A squeaking or clicking noise that repeats with every step, means you may need to add or remove spacers. If the patient is wearing socks, the metal end of the liner may be too long for the recess in the lock and it will ride on the inside of the lock and make the squeaking noise.  Try using a brass pin or put a P-Lite donut on the end of the liner or use a “Fitting Lock” to adjust spacers. Other things to check on the lock level include: lock condition, pin condition, check liner in hand, and pull to check.

*NOTE: If those options don’t work, you could try a ‘Bench Load Test’: Hold the posterior wall of the socket in one hand and hold the foot in the other hand. Then try to move in a posterior-anterior rocking motion to emulate the walking motion. Check every component to make sure all screws are tightened, including set screws and any metal touching metal. 

My patient is in a polypro socket and developed a squeak around the Air-Lock (CD103).  We thought it was the liner umbrella rubbing on the lock, so I added a sheath, and that did not help. I also cleaned the lock, retightened everything in the lock and the push button.  The issue persists.

We never put any lubricant anywhere near the lock, as that will eventually just attract more debris and dirt which wears out the lock faster. This is a good time to put a P-Lite donut on the liner to see if that helps reduce the noise. The noise may be from the liner rubbing against the socket. Rough up the liner a bit where it connects to the socket. If neither of the above works, try the brass pin.

I am using a flexible inner liner with the Locking Lanyard. Does anything need to be done to prevent air from entering between flexible inner and inner socket at the lock level.

Once the air is expelled there should not be an issue to prevent air from entering again.

I’m using a Vivac Test Socket with the Air-Lock but no Alignable Four Connector.  Is it possible to add a connector after blister molding?

Yes, do the blister molding with the lock in place, then glue the connector on and buildup from the lock down to the connector and then wrap the perimeter/outside to strengthen the mold in place.

I am using the Air-Lock with an adjustable connector to lock into the mold with a patient that has a lateral offset. There is some gaping and I am wondering what to fill that in with?

You can use Quick Glue to fill in the gap.

How long do I let the adhesive set?

At least one (1) hour, but we suggest letting it set overnight.

Is there any other adhesive I can use with the LowPro Lock?

Any Five (5) minute epoxy will work.

*NOTE: DO NOT USE SILICONE BASED ADHESIVE

What material do you recommend for a check/test socket?

Co-Poly, Vivak or MPE

Is the Low-Pro Summit Lock water-resistant and is there any maintenance required when used in water?

Yes, the Low-Pro Summit Lock is water-resistant. We do highly recommend rinsing the lock and components when used in saltwater, chlorine, or an environment with dirt, sand, grit

What liners do you recommend for your Low-Pro Summit Lock?

The liner MUST be fabric backed for good adhesion.

What are the L-Codes for the Low Profile Lock?

The Low Profile Lock bills the same as a distal pin lock system – L5671.  By gluing the lock to the liner, it turns a cushion liner into a locking liner L5673.

*NOTE: The billing codes listed should not be construed as a guarantee for coverage or payment.  Ultimate responsibility for the coding of products/services rests with the individual practitioner.

Can the Low-Pro Summit Lock be retrofit?

NO, it cannot be retrofit. If needed, to identify placement for the Low Profile Summit Lock, you can use a Summit Lock to find the correct placement on a test socket and move it if necessary.  Then on a laminated definitive socket you can use the Low Profile Summit Lock to reduce build height of the lock.

How long do I let adhesive set?

At least one (1) hour, but we suggest overnight.

Is there any other adhesive I can use?

Any Five (5) minute epoxy will work.

 *NOTE: DO NOT USE SILICONE BASED ADHESIVE

What material do you recommend for a check/test socket?

Co-Poly, Vivak or MPE.

Is the Summit Lock water resistant and is there any maintenance required when used in water?

Yes, the Summit Lock is water-resistant. We recommend rinsing the lock and components when used in saltwater, chlorine, or an environment with dirt, sand, grit.

What liners do you recommend for your Summit lock?

The liner MUST be fabric backed for good adhesion.

What are the L-Codes for the Summit Lock?

The Summit Lock bills the same as a distal pin lock system – L5671.  By gluing the lock to the liner, it turns a cushion liner into a locking liner L5673.

*NOTE: The billing codes listed should not be construed as a guarantee for coverage or payment.  The ultimate responsibility for the coding of products/services rests with the individual practitioner.

Can the Summit Lock be retrofit?

Yes it can be retrofit.

The Summit Lock has come loose several times. What are some tips and suggestions for this situation when it looks like the adhesive is not holding very well?

First, grind away any excess glue on the lock and liner. Use acetone to get those areas cleaned up very well. Make sure to remove any silicone that appears to have been used. Finally, make sure that you use Quik Glue or another Urethane based adhesive to attach the Summit Lock. If wrong glue has been used, you probably will need a new attachment. Stick the attachment down quickly before glue starts to gel.

How long do I let the adhesive set?

At least one (1) hour, but we suggest overnight.

Does Silicone Adhesive come with the Proximal Lock when I order it?

Yes, the Silicone Adhesive comes with the Lock and is enough adhesive for two (2) liner attachment applications.

*NOTE: If the patient wants a second liner with attachment, you will only need to purchase the Extra Strap Kit (CD116XS).  If used properly, you should have enough adhesive that came with the lock.

Is there any other adhesive I can use?

NO – Only use Silicone Adhesive (Coyote Part # CD116SA)

What material do you recommend for a check/test socket?

Co-Poly, Vivak or MPE.

What liners do you recommend for the Proximal Lock?

The liner MUST be fabric backed for good adhesion AND it is best if the liner only stretches horizontally.

What are the L-Codes for the Proximal Lock?

The Proximal Lock bills the same as a distal pin lock system – L5671.  By gluing the lock to the liner, it turns a cushion liner into a locking liner L5673.

*NOTE: The billing codes listed should not be construed as a guarantee for coverage or payment. Ultimate responsibility for the coding of products/services rests with the individual practitioner.

Why did the liner attachment delaminate?

Delamination of a liner fabrication happens when the fabric doesn’t hold up well or the strap is being pulled way too hard, or both.

Do I need to use the reinforcement strip/pad with the Proximal Lock?

The reinforcement strip/pad is optional but will help add strength and create less friction between the strap and the liner attachment when donning/doffing.

Where do I place reinforcement strip?  

The reinforcement strip is placed on the outside of the liner attachment – it is not attached to the liner.

Why did the PAP tear?

In this case the socket could be too loose. We recommend to put a pad like a P-Lite pad inside the socket where the bolt is to help push it out.

Is the Proximal Lock water resistant and is there any maintenance when used in water?

Yes, the Proximal Lock is water-resistant. We recommend rinsing the lock and components when used in salt water, chlorine or an environment with dirt, sand, grit.

Can a Proximal Lock be retrofit?

No, it is built into socket and it cannot be retrofit.

Can I remove and reset the blue liner attachment if needed?

You can try by using Acetone to remove and clean the area on the liner but there is no guarantee you can effectively reset the attachment.

*NOTE: DO NOT scuff liner!

Can I purchase just the blue liner attachment, what is the part number?

Yes you can.  Please order part number CD116LA – Proximal Lock Pad (Liner Attachment)

When installing the Proximal Lock, I noticed that the screws that are provided with the lock are too short and won’t fit through the laminated socket. What other screws should I use or what do you suggest I do in this scenario?

If the lamination is too thick you will have to sand it down a bit until the screws will fit. It is very difficult, if not impossible, to find screws to replace that are longer so sanding down the area to fit the screws is highly suggested.

I have a patient who wears an Ossur TF seal in liner. The problem he has is after he sits for a long time, he loses some suction and he has to purge the air when he gets up to walk and it bothers him. I was wondering if I could use the Proximal Lock you have in conjunction with his current socket and seal in liner?

In this specific case, we recommend using the Summit Lock (CD101) because it easy to retrofit and would work best. However, adding the Summit Lock won’t necessarily address or solve the air issue but may help to expel air once the patient gets up and starts walking. It is critical to make sure that the Summit Lock is above the seal band. Finally, you may want to take a look at our CQL Auto Expulsion Valve (CD105) as an option for the patient.

Which pin should I use with the Grommet Lock?

The pin selection will depend on the liner.

  • Most liners are 10mm – use the CD104P10
  • Ossur Upper Extremity is 6mm – use CD104P6
  • WillowWood P Pod is 1/4×20 – use CD104PQ

What are the L-Codes for the Grommet Lock?

L5671, *L5647 and *L5652

*NOTE:  The billing codes listed should not be construed as a guarantee for coverage or payment.  Ultimate responsibility for the coding of products/services rests with the individual practitioner. *L5647 and L5652 are not recommended for billing Medicare.

What liners do you recommend for the Grommet lock?

Fabric or no-fabric backed liners both work well with the Grommet Lock.

*NOTE: Please make sure you purchase the correct pin depending on if the liner has a 6mm, 10mm, or 1/4x20mm thread.

Is the Grommet Lock the only lock for upper extremities?

No, you can also use the Small Air-Lock.  The Grommet Lock is best for pediatric patients or low activity adults. The Small Air-Lock is great for Upper Extremities in adults and patients that are physically active with their upper extremities or may be lifting heavier weight.

What size is best to order to fabricate an arm?

3” or 4”

What size is best to order to fabricate a leg?

4”, 5”, 6”, and 7”

How do I keep a Coyote Composite socket from fraying on the edges in the lamination process?

This depends on the amount of vacuum you use. Epoxy resin can take 20+ lbs. of vacuum and not fray on the edges. For Acrylic Modified Epoxy, use 10-14 lbs. of vacuum in the lamination process.

How do I know which Layup to use?

Use equal amounts of Coyote Composite in place of carbon fiber in your existing layups or you can try one of Coyote’s sample Layups

Which Resin should I use with the Coyote Composite?

Layups are affected by the type of resin that are used.

  • Modified Acrylic is thinner, easier to saturate and fast to cure

Epoxy Resin; is stronger, clearer, thicker with a slower cure time – Epoxy works well for heavier more active patients

Why use a Fitting Lock?

We suggest that you use a Fitting Lock to adjust the spacers correctly to ensure the pin is not riding on the bottom of the lock or riding on the inside of the lock.

*NOTE: NEVER use a Fitting Lock in a Test or Definitive socket – Their only purpose is for pin adjustments to achieve proper seating.

Why should I use a brass pin versus the standard plastic pin?  

The brass pins were introduced to help with strength, wear characteristics, and to help with a ‘squeak’ that some patients will notice with plastic pins. They are stronger, easier to service, and corrosion-resistant.

What material do you recommend for a check/test socket?

Co-Poly, Vivak, or MPE.

Is the Easy-Off Lock water resistant and is there any maintenance when used in water?

Yes, the Easy-Off Lock is water-resistant. We do recommend rinsing the lock and components when used in saltwater, chlorine or an environment with dirt, sand, grit.

*NOTE– A prosthetist may need to remove the lock mechanism and blow out the lock housing with an air hose.

What liners do you recommend for the Easy-Off Lock?

Any liner that accepts a 10mm pin (6mm pins are also available). Fabric or Non-Fabric backed liners both work well.

What are the L-Codes for the Easy-Off Lock?

L5671, *L5647, and *L5652

*NOTE: The billing codes listed should not be construed as a guarantee for coverage or payment.  Ultimate responsibility for the coding of products/services rests with the individual practitioner. *L5647 and L5652 are not recommended for billing Medicare.

Which pins do I use with the Easy-Off Lock?

  • For the Easy-Off Lock: 8 Click Pins: CD103P8 or CD103P8H (solid brass)
  • For the DEEP Easy –Off Lock: 11 Click Pins CD103P11 or CD103P11H (solid brass)

*NOTE: 11-click pins should ONLY be used with the Deep Air Lock; Parts are available to modify locks in existing sockets if the pin is bottoming out in the lock. To modify lock you will need the Guide Pin (CD103GPN) and Pin Cap (CD103PC) and Coyote QUIK Glue.

Loctite Blue 242 must be used on lock pin threads after determining the appropriate lock pin spacing.

Can I replace just the lever assembly on the Easy-Off Lock?

Yes, this part number is CD117LP and is known as the lock plate assembly. It is all one piece with the lock tooth, springs, and comes with four (4) replacement screws.

Is the Suction Lock the same as the Easy-Off Lock?

No, the Easy-Off Lock replaced the Suction Lock – We no longer offer the Suction Lock or its parts/pins.

Can I put a patient over 350 lbs. in an Easy-Off Lock?

Our locks are rated and tested up to 265 lbs.

Do you need elevated vacuum with the valves?

Valves can be used for suction.

What is the difference between the HandsFree Valve & the CQL Valve?

  • The HandsFree Valve offers auto expulsion for easy donning but adds a twist to open airflow for easier doffing.
  • The CQL valve only expels air. Both valves can be used with elevated vacuum.

Is the Push Button Valve used with elevated vacuum?

NO, the Push Button Valve is for suction only.

Can the Valves be used for both Above Knee (AK) and Below Knee (BK) Sockets?

Please use the following:

  • Above Knee (AK) use the Push Button Suction Valve (CD105PB)
  • Below Knee (BK) use either the CQL (CD105) or Hands Free Valve (CD105HF)

What are things to consider regarding cleaning, durability and general maintenance of the CQL Auto Expulsion Valve?

Once you take the valve apart with the lock wrench and its fairly simple to clean. There is a small filter in the CQL to catch dirt and debris. The durability and longevity have been good, and it’s easy to retrofit into a socket if you need to add one later.

Are the Connectors Waterproof?

Yes, they are made of Aluminum, however the screws in the connector may rust if exposed to saltwater. Therefore, we recommend that you always rinse after exposure to saltwater.

Do the Connectors have to be used with inserts?

No, the connectors do not need to be used with inserts, they can be glued to the lock with any offset position. However, using the inserts can allow the connector to be keyed onto the bottom of the lock in different offset positions.

Which Connector should I use for the check or definitive socket?

  • The One Shot Connector is for the Definitive Socket ONLY (Part #CD111)
  • The Alignable Connector can be used for both the Check- and Definitive Sockets (Part #CDC103AF)

What is the build height for the Connectors?  

The One Shot Connector is .500 in build height versus .625 for the Alignable Connector.

What is a Test Socket Connector and why would I use it?

The Test Socket Connector (CD119SC) is made of PVC and is inexpensive and reusable.

They are designed specifically to glue a connector to a Vivac Test Socket. The Test Socket Connect must be “roughed/scuffed” prior to each use for good bonding.

When would I use a Locking Lanyard?

A Locking Lanyard is primarily used for Above Knee (AK) patients due to residual skin/flesh.  the Lanyard pin helps elongate the limb when donning.

What Lock do I use with the Locking Lanyard?

  • The Lanyard Pin is used only with the Deep Air-Lock or the Deep Easy-Off Lock. They have different part numbers to ensure you get the pin with cable attached:
  • Air-Lock Locking Lanyard with pin (Part #CD103L)
  • Easy-Off Lock Locking Lanyard with pin (Part#CD117L)

What does the patient do with the extra pin cable string that hangs at the bottom of the socket when donned?

You would order and attach the Lanyard Pinch Disk (CD118PD); The residual cable string is wrapped around the disk and held in place and out of the way.

Why would I need a suspension sleeve with a Coyote Lock?

A suspension sleeve can help control socket rotation and can always be used as a secondary form of suspension.  If used with an Easy-Off Lock, it can hold vacuum in the socket if dual suspension is used, and will hold suction if used with either the Easy-Off or Air-Locks (in this case, it is recommended to add a valve to the socket as well).

What are the flexibility options for the Dynamic Strut?

There are two (2) flexibility options and they are both inexpensive and easily replaceable:

  • Medium Flex (CD205M) for light to medium activity levels or heavier weight-low activity patients (weight range: 125-200lbs).
  • Rigid Flex (CD205R) for medium activity levels or heavier weight-low activity patients (weight range: 175-265lbs).

Can I cut the strut to different heights?

Yes, the strut can be cut with a saw and sanded and buffed to smooth and finish the cut edge.

Have these struts been tested?

Yes, our AFO Struts were designed, manufactured, and tested in house, with over one (1) year of patient testing

Do tips come with the QUIK GLUE when I order?

One (1) tip comes with both the 50cc and 220cc QUIK GLUE order. Additional tips can be purchased separately:

  • 50cc Pack of 6 – Item # CD401

Pack of 20 – Item #CD402

  • 220cc Pack of 12 – Item #CD412

Do I need a specific dispenser for the Quik Glue?  

  • CDDMA51 Dispenser for 50cc Quik Glue Cartridge
  • CDDM220 Dispenser for 220cc Quik Glue Cartridge
  • CD4150P Coyote Quik Glue 50cc cartridge with plastic plunger and one (1) tip – great for one use.

Is the Coyote QUIK GLUE Safe to Ship?

Yes, our QUIK GLUE’s all ship non-hazardous and have no odor.

Is there a way to remove Coyote Quik Glue?

Yes, if you use a heat gun it will soften the glue so you can remove it.

How big are the Kleenaire Systems and how are they shipped?

The Kleenaire Systems are shipped marked “Fragile” in two boxes:

  • Wall Unit, 54lbs in a 40”x 13”x 26” box;
  • Blower Unit, 16lbs in a 15”x15”x15” box.

*NOTE: The instructions, warranty, wall mount are included with the wall unit.

Can you remove a suction band that has already been and glued to the liner with silicone adhesive?

No. You will have to start over with a new liner and wave suction band.