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| Not all locks are created equal.Is it possible that there’s a better lock than one designed 20 years ago? Are the cheapest locks going to work as well, as long, or as smoothly as newer innovations? The Air-Lock is a dual suspension pin system designed to combine suction suspension comfort with pin suspension safety and security. The airtight seal of the Air-Lock prevents air from coming into the bottom of the socket, creating a negative pressure inside the socket (suction), which reduces pistoning regardless of the location of the pin. This also allows for less traction on the limb for increased comfort and decreased liner wear. Sometimes the only thing that can be saved is time. Vacuum form over the mold, lock and Fast Four Connector to create a fast, inexpensive, airtight test socket. Use for an extended test period or as a shower leg. Shown to left: Air-Lock in test socket with Fast Four Connector and Alignment Coupler (CD106) For the bottom line:The ability to offset the alignment in the socket saves a lot of money by eliminating the need for expensive offset endo components. In many cases there is no need for a suspension sleeve to maintain the suction feature of the lock. Patent # 6334876 | | Stop letting the lock dictate prosthetic alignment. The Alignable Four Connector can be offset from the lock in any position you want. This can be done in a single lamination. On the socket above, you can see the offset of the connector from the lock. Endo components can be placed in a neutral position. No dummy or extra fabrication tooling (other than your connector of choice) is required with the Air-Lock. Build height will vary with different liners and fabrication set ups but will never exceed these amounts: CD103: Maximum clearance required: 2”
CD103S: Maximum clearance required: 1 7/8” Both locks weigh less than 100 grams Socket is also shown with an expulsion valve. These are used only to ease donning, or when a suspension sleeve is used. Expelling air doesn’t create suction; eliminating incoming air does. There is usually no need for an expulsion valve. |
Order / Parts | CD103: Air-Lock
2 1/2” diameter | | CD103S: Small Air-Lock
1 1/2” diameter | | CD103FF: Fast Four Connector Keys directly onto bottom of Air-Lock. | | CD103AF: Alignable Four Connector Can be offset from lock in any position. Each connector includes parts needed for fabrication. | | CD103P6: Standard Lock Pin
(1 1/4” long, 6 clicks)
Includes: 6mm set screw, 10mm adaptor and spacers for length adjustment. | | CD4120: Coyote Quick Adhesive Quick Adhesive is not required for fabrication of the Air-Lock, but works very well in this application. |
Air-Lock Accessories
| CD103WH: Lock Wrench for Air-Lock and CQL™ Valve Removes valve body of Air-Lock and CQL™ Valve to access the inside of the lock and the filter of the valve. Wrench is equivalent to 13mm deep well socket. | | CD103RBC: Release Button Cover Added to end of release button to make it easier for patients to release the lock. Ideal for geriatric or other lower dexterity or limited hand strength patients. | | CD103P9: Long Lock Pin (1 5/8” long, 9 clicks)
Includes 6mm set screw, 10mm adaptor and spacers for length adjustment.
LOCK PIN NOTE: Because of the airtight feature, the socket is held on by suction, rather than with excessive amounts of traction. This allows for less elongation in the sockets and reduces the need for a long pin. | | CD103PC: Pin Cap The Pin Cap is used to reseal socket to keep it airtight when lengthening the socket for use of a long pin.Sold with the Long Pin Tool Kit, or individually. | | CD103GP: Guide Pin Slides into lock to allow for lengthening of lock for use with a long pin without damaging inside of lock.
Sold with the Long Pin Tool Kit, or individually. | | CD103ELD: Exo Lamination Plug Used when fabricating Air-Lock in Exo sockets. The extra length of this plug versus the standard makes it easier to access the release button and valve body of the Air-Lock. | 
| CD103TK: Long Pin Tool Kit When using a Long Pin, some liners will bottom out in the socket. To prevent this we have created a tool kit which drills through the bottom of the lock and socket. It can then be resealed with a Pin Cap (CD103PC). This allows for use of the long pin, but does not require any more build height. Tool Kit includes a long drill bit, hole saw, pin guide, countersink and one Pin Cap. |
Tech / Fitting Tips
TECH TIP | All liners seat differently in the Air-Lock. There are a number of options to make sure the pin seats completely in the lock regardless of your liner choice. There’s even a longer pin. Give us a call for more information. |
Videos / Instructions
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