THE V-A-Pu...

VASCULAR ACCESS AND BEYOND

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Access Technologies pioneered theVascular Access Port or V-A-P^u for totally subcutaneous access in lab animal research. It started over two decades ago as the Vascular Access Port and has allowed researchers to maximize long-term patency in vascular, gastric, urinary, biliary, intracranial, and intraspinal access applications (to name a few).

For intermittent access, the V-A-P obviates the need for jackets and harnesses. For continuous access, the V-A-P minimizes contamination, sepsis and catheter dislodgement.

Titanium or polysulfone?

V-A-P reservoirs are constructed from implant grade polysulfone plastic or titanium, and silicone rubber. All V-A-P materials used by Access Technologies are the same as those used in human ports and are MRI compatible. While titanium and polysulfone ports are comparable with respect to biocompatibility, the titanium allows for use of a larger, more dense septum, which grips the Huber needle more aggressively. Accordingly, titanium ports may be more appropriate for protracted or continuous access.

Schematic Drawing an Implanted V-A-P

Polysulfone Vascular Access Ports

Originally introduced back in 1981, the polysulfone Model GPVu was the first V-A-P for laboratory animal use. Since then thousands of these plastics V-A-P's have been successfully used in species ranging from mice to swine to horses. Polysulfone V-A-Ps are ideal for short term protocols where cost is an issue. Click here to view the polysulfone ports on the catheter size chart. Below are pictures of the three polysulfone models that we offer.

Model GPVu Large Animals		Model SLAu Medium Animals			Model ROPu Small Animals

Titanium Vascular Access Ports

Originally introduced back in 1996, the Access Technologies Titanium Vascular-Access-Ports have become the gold standard for long-term access in laboratory animals. Since the introduction of these human quality V-A-P's thousands have been successfully used in species ranging from rats to swine. Titanium V-A-P's are ideal for protracted use and feature very dense silicone septums capable of withstanding repeated access for a number of years.

We have recently improved our family of titanium vascular access ports. Instead of designing a new model from scratch, we decided to develop on a concept that already had a firm base. We have taken our model TI product line which consists of the TI, TI200, and MTI ports and made some great changes. Here are the significant advancements this product line has undergone:

Model CP2u Large Animals		Model CP4u Medium Animals		Model CP6u Small Animals

Specialty Vascular Access Ports

Access Technologies also has available what we call specialty vascular access ports.

	The Periportu Vascular Access Port is one option when wanting skin parallel access to the vasculature. This port is ideal for continuous infusion in medium to large animals.
					The OmegaPortu provides you with a very high quality, silicone and titanium port which offers 360 degrees of access. The OmegaPort is ideal for continuous infusion applications where needle stability is most important. Because of the very thick septum, this port requires greater force to remove the needle.
The Shunting Vascular Access Ports have two oulet tubes for connection to a variety of catheters for your shunting applications such as bile, thoracic duct, and portal vein access. When ordering, please specify catheter material and French size.
		The Model TI-DL is a dual septum, dual lumen vascular access port which is beneficial when infusing two different infusates. This port is ideal for use in dogs, pigs, large primates and large animals.
The Mouse Transport is our smallest V-A-P available. It is suitable for small rodents that weigh less than 100 grams. The Transport is made of stainless steel and silicone and is available with a preattached 1.2 or 2 French catheter.

What size V-A-P should I use?

Below is a chart which can help determine which V-A-P you should use. The ports are listed in the left column and the animal according to weight is listed in the row across the top. The suggested catheter size is listed in the row across the bottom. Just find your animal and you're off to selecting a V-A-P!

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