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FDA Approved!
An Overview:
Inserting metallic prosthetic joints into the intramedullary canal of bone has
advanced remarkably over the last 10 years. What has been more difficult to achieve
prior to inserting prosthetic joints, however, is a system, whereby the intramedullary canal
is cleaned of all body fluids before inserting the necessary bone cement.
What the new Cement Injection and Intrameduallary Canal Drying device achieves is a way to clean
and simultaneously dry the intramedullary canal of a bone, while injecting bone cement in order to
make ready for implanting a prosthetic device.
This new Bone Cement Dispenser is a sterile, single-use, polyethylene disposable device.
Uniquely, this cement delivery tube has a cellulose sponge attached around its distal end to absorb and
collect body fluids remaining in the intramedullary canal.
The tube also has a suctioning vacuum to help remove the unwanted collected body fluids and blood
products before injecting the bone cement, creating an improved cement bonding of a prosthetic
device in the intramedullary canal of a bone.
Conventional steps now taken prior to a prosthetic implant in the intramedullary canal include:
- The intramedullary canal being prepared with reamers and rasps to allow for insertion of
the prosthesis.
- A plug is then placed into the intramedullary canal to seal the canal and allow for
washing of the canal. This has been to assist in pressurizing the bone cement in the
upper canal.
- The canal is then washed thoroughly using a pressurized fluid delivery system which
removes debris of bone, fat and blood products.
- Bone cement is then injected into the depths of the canal using a pressurized cement
delivery system.
Despite the advantages of these conventional procedures, excess fluid and blood still have time
to build up in the canal - even after proper cleaning.
The reason is that, by the time it takes to remove the fluids, using conventional
washing devices, and then insert the cement injector, a relatively large amount of fluid and
blood has had time to build up in the canal - giving these fluids a chance to mix with the bone
cement at the time of the cement injection.
The Bone Cement Dispenser, while injecting bone cement into the intramedullary canal of a bone prepared
for a prosthetic device, continuously removes any body fluids and blood products, while simultaneously
drying the interior surfaces of the intramedullary canal.
Through a vacuum source, and a porous, absorbent pad at the distal end of the dispenser,
fluids are continuously absorbed.
Which means that, bone cement under pressure, can be injected through the central bore of
the dispenser, while excess fluid is withdrawn through the absorbent pad and continually
evacuated from the interior of the canal.
In this manner, the intramedullary canal stay clean and clear of fluids, thus
creating improved cement bonding of the prosthetic device in the intramedullary canal.
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