Pin Lock Mechanism - Replies
Warren Mays
Description
Collection
Title:
Pin Lock Mechanism - Replies
Creator:
Warren Mays
Date:
10/5/2010
Text:
Thank you to all who replied.
Warren R Mays, CPO
Original question:
I have a patient who prefers to wear a pin and liner system. She has a very
tapered congenital Symes amputation, therefore, I want to use a locking
mechanism that is not large in diameter so that I can maintain total contact
within the socket. I have attempted to use Cascade Orthopedic's locking
mechanism, somewhat successfully, but the fact that the mechanism continues
to try to screw her further down into the lock is working against us. Can
someone point me towards a pin locking mechanism that has a small diameter
pin receiver, yet the pin lock does not continue to spin and further pull
the pin (and limb) down into the socket?
The replies:
- The Fillauer shuttle lock might be perfect for you. Small diameter..you
can use a short pin. I have found them to be very reliable and easy to
service/change out.
- Check out Coyote
- We have had good luck with the small Coyote lock in those
situations-however it may not be small enough
- Use the pediatric coyote airlock ...it will give you suction as well
- Have you tried the bulldog or smooth pinned clutch locks that do not
continue to screw, I have had success with the bulldog locks. They are
plastic and not so well, harsh.
- Look at PDI designs. They have small diameter locks. I think it is
www.prostheticdesign.com. Ask for Bob Carpenter.
- Welcome to the pin liner. I personally would switch to a suction. One
can also get a custom tech liner and have it filled in for more of a
stove-pipe shape, which will keep the total contact.
- Try the small air-lock from Coyote Design. www.coytoedesign.com Great low
profile lock with no distal elongation and your alignment can be independent
of your pin position.
- Not to because I am owner of Medex, same time I am a Prosthetist. In your
case I would try Medex 4T28 for this patient with shorter pin. Here is the
address; www.medexinternational.com
-Until now there are a lot of good applications, long B/K and A/K, Symes
etc.
- We use Fillauer's shuttle lock system from Pel supply. It is small,
lightweight and durable. It is easy to replace if needed and you have a
choice of three different pin lengths, 1, 1.5, and 2.
- Prosthetic Design (PDI) has a 57 mm diameter pediatric sized shuttle lock.
The design is modular and is positive locking rather than a ratchet design
as you are describing.
They can be reached at (800) 459-0177.
- Working in a pediatric facility, we use a lot of pin locks -- we've had
great success with Ossur's Icelock 700 series ratchet system (L-721000) for
cases like the one you describe. Hope this helps . . .
- We have a lock that is 55mm in diameter (standard adult size is 63mm), the
pin is held all the way around by our ball bearing mechanism. The lock is a
click style lock, there would be no additional spinning or further pull on
the patient. If you would like me to e-mail additional information to you
regarding this product that would be my pleasure, thank you and have a
wonderful day.
Tania Booker
Bulldog Tools Inc
- Good Morning - try the Coyote system. You can use it without the housing
and it has a leak rate stem out of the housing. They also have UE options
if the standard is too big.
- Have you concidered a lanyard (Ottobock or Cyote)? Low profile and not a
screw home style.
How about an expulsion valve? No profile and no screw style, but you have to
add a sleeve above for air seal.
A non serated pin (smooth/cam style lock). It tends to sit at it's last
placement and does not try to find the next click ( pin seration).
- recc either the coyote air lock [grommet lock ] it's small...
or the fillauer shuttle small size
- The smallest lock that I have ever used is Ossur's upper extremity lock.
The pin is serrated and will not pull your patient in. however depending
upon her shape the lock may not be capable of holding the weight of the
prosthesis, I would call ossur and get their opinion.
Personally I found the best small lock to use is one of Fillauer's. I have
shaved down the original shuttle lock to make it smaller. You can easily
reduce the diameter of the lock down to the metal retaining ring, and it
will not pull the patient in.
a third alternative is to go with is a D bolt also from fillauer and to
use a lanyard or use Ossur's lanyard system . this will allow her to alter
the amount of tension through a Velcro strap. This is not a great choice for
symes because of the length of the limb but it has and does work.
If you want something similar to the Cascade lock mechanism you can also try
streifeneder. I think that from your email this would be perfect for you.
they have several types and sizes that are not gear driven, and without the
frame the lock mechanism's themselves are very small both in length and
diameter. I think that this would be the 150 series (specifically model 152
has a rastered pin)There may be a smaller lock available but I don't have
a catalog.
-Check out the ossur locks. They used to have one that the diameter was not
much more than a quarter. Maybe a little bigger. Used them at Loma Linda a
few times. If I remember right kind of a pain to fab but you can handle it.
- We carry the plain locks and pins from Ortho Europe that uses 8 mm pins.
<URL Redacted>
3LK508 Uniform Pin 8mm Kit 2
3LK603 Plain Lock 36mm (8mm pin)
3LK604 Plain Lock 50mm (8mm pin)
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or affiliations should be used in all communications.
Warren R Mays, CPO
Original question:
I have a patient who prefers to wear a pin and liner system. She has a very
tapered congenital Symes amputation, therefore, I want to use a locking
mechanism that is not large in diameter so that I can maintain total contact
within the socket. I have attempted to use Cascade Orthopedic's locking
mechanism, somewhat successfully, but the fact that the mechanism continues
to try to screw her further down into the lock is working against us. Can
someone point me towards a pin locking mechanism that has a small diameter
pin receiver, yet the pin lock does not continue to spin and further pull
the pin (and limb) down into the socket?
The replies:
- The Fillauer shuttle lock might be perfect for you. Small diameter..you
can use a short pin. I have found them to be very reliable and easy to
service/change out.
- Check out Coyote
- We have had good luck with the small Coyote lock in those
situations-however it may not be small enough
- Use the pediatric coyote airlock ...it will give you suction as well
- Have you tried the bulldog or smooth pinned clutch locks that do not
continue to screw, I have had success with the bulldog locks. They are
plastic and not so well, harsh.
- Look at PDI designs. They have small diameter locks. I think it is
www.prostheticdesign.com. Ask for Bob Carpenter.
- Welcome to the pin liner. I personally would switch to a suction. One
can also get a custom tech liner and have it filled in for more of a
stove-pipe shape, which will keep the total contact.
- Try the small air-lock from Coyote Design. www.coytoedesign.com Great low
profile lock with no distal elongation and your alignment can be independent
of your pin position.
- Not to because I am owner of Medex, same time I am a Prosthetist. In your
case I would try Medex 4T28 for this patient with shorter pin. Here is the
address; www.medexinternational.com
-Until now there are a lot of good applications, long B/K and A/K, Symes
etc.
- We use Fillauer's shuttle lock system from Pel supply. It is small,
lightweight and durable. It is easy to replace if needed and you have a
choice of three different pin lengths, 1, 1.5, and 2.
- Prosthetic Design (PDI) has a 57 mm diameter pediatric sized shuttle lock.
The design is modular and is positive locking rather than a ratchet design
as you are describing.
They can be reached at (800) 459-0177.
- Working in a pediatric facility, we use a lot of pin locks -- we've had
great success with Ossur's Icelock 700 series ratchet system (L-721000) for
cases like the one you describe. Hope this helps . . .
- We have a lock that is 55mm in diameter (standard adult size is 63mm), the
pin is held all the way around by our ball bearing mechanism. The lock is a
click style lock, there would be no additional spinning or further pull on
the patient. If you would like me to e-mail additional information to you
regarding this product that would be my pleasure, thank you and have a
wonderful day.
Tania Booker
Bulldog Tools Inc
- Good Morning - try the Coyote system. You can use it without the housing
and it has a leak rate stem out of the housing. They also have UE options
if the standard is too big.
- Have you concidered a lanyard (Ottobock or Cyote)? Low profile and not a
screw home style.
How about an expulsion valve? No profile and no screw style, but you have to
add a sleeve above for air seal.
A non serated pin (smooth/cam style lock). It tends to sit at it's last
placement and does not try to find the next click ( pin seration).
- recc either the coyote air lock [grommet lock ] it's small...
or the fillauer shuttle small size
- The smallest lock that I have ever used is Ossur's upper extremity lock.
The pin is serrated and will not pull your patient in. however depending
upon her shape the lock may not be capable of holding the weight of the
prosthesis, I would call ossur and get their opinion.
Personally I found the best small lock to use is one of Fillauer's. I have
shaved down the original shuttle lock to make it smaller. You can easily
reduce the diameter of the lock down to the metal retaining ring, and it
will not pull the patient in.
a third alternative is to go with is a D bolt also from fillauer and to
use a lanyard or use Ossur's lanyard system . this will allow her to alter
the amount of tension through a Velcro strap. This is not a great choice for
symes because of the length of the limb but it has and does work.
If you want something similar to the Cascade lock mechanism you can also try
streifeneder. I think that from your email this would be perfect for you.
they have several types and sizes that are not gear driven, and without the
frame the lock mechanism's themselves are very small both in length and
diameter. I think that this would be the 150 series (specifically model 152
has a rastered pin)There may be a smaller lock available but I don't have
a catalog.
-Check out the ossur locks. They used to have one that the diameter was not
much more than a quarter. Maybe a little bigger. Used them at Loma Linda a
few times. If I remember right kind of a pain to fab but you can handle it.
- We carry the plain locks and pins from Ortho Europe that uses 8 mm pins.
<URL Redacted>
3LK508 Uniform Pin 8mm Kit 2
3LK603 Plain Lock 36mm (8mm pin)
3LK604 Plain Lock 50mm (8mm pin)
********************
To unsubscribe, send a message to: <Email Address Redacted> with
the words UNSUB OANDP-L in the body of the
message.
If you have a problem unsubscribing,or have other
questions, send e-mail to the moderator
Paul E. Prusakowski,CPO at <Email Address Redacted>
OANDP-L is a forum for the discussion of topics
related to Orthotics and Prosthetics.
Public commercial postings are forbidden. Responses to inquiries
should not be sent to the entire oandp-l list. Professional credentials
or affiliations should be used in all communications.
Citation
Warren Mays, “Pin Lock Mechanism - Replies,” Digital Resource Foundation for Orthotics and Prosthetics, accessed November 24, 2024, https://library.drfop.org/items/show/231923.
