Vascular Occluders


Inflatable cuffs made of soft, flexible 100% Silicone rubber and are Autoclavable.
They offer reliable performance during chronic implantations and Zero-flow base line establishments in Blood flow studies.
Achieve the full range of vascular occlusion for accurate circulatory research studies and gentle constriction of soft organs for acute or chronic studies.
They are operational with either gasses or fluids requiring only a syringe.
We carry a wide range of sizes in stock and ready to ship to you.
Custom work is always available to meet your needs.
For animal research only

Description . . . . .

DOCXS Occluders are constructed entirely of 100% silicone rubber. They are soft and flexible, with a smooth outer finish for ease in maintaining cleanliness. They are completely autoclavable for thorough sterilization as well.

Silicone rubber, noted for it's high degree of physiological compatability makes DOCXS Occluders the ideal choice for prolonged implantations such as chronic blood flow studies, or similiar application.

DOCXS Occluders are available in Standard Lumen sizes ranging from 2mm to 24mm with a 1.5 mm model available on request. Lumen sizes of 10mm to 24mm are available in a Heavy Duty model as well.

The Heavy Duty Occluders are designed for greater resistance to rupture and are recommended for use in the more rugged application. They feature a thicker cuff and diaphragm to withstand greater back pressures, well beyond the normal physiological range. As you will find with the standard models, they maintain a high degree of sensitivity and produce consistently accurate results.

When ordering, please specify the Luman size corresponding to the diameter you desire in millimeters (e.g. a VO-4 would specify a 4mm Lumen diameter). For heavy duty models, please use the suffix "HD" after the Lumen size (e.g. VO-14HD would specify a heavy duty 14mm Lumen diameter).

Operation . . . . .

Step 1:   Apply the Occluder cuff around the exposed blood vessel. Secure it in place with a suture material through the eyelets.
Step 2:   Occlude the vessel to any degree desired by inflating the diaphragm with air or liquid injected into the actuating tube using a syringe and blunted needle. Clamp the tubing to maintain occlusion of the vessel over time.
Step 3:   To deflate, simply withdraw the air or liquid.

Special Note: Occlusion response is quite rapid. The desired pressure may be maintained for extended periods by clamping off the actuating tube. For procedures requiring prolonged occlusion, we recommend the use of physiologically compatible, non-volatile liquids such as sterile Glycerin or Saline solution.

  
Occluder
Deflated
Inflated

VO-2

Overview
Dimensions Chart
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VO-8

Overview
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VO-16

Overview
Dimensions Chart
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VO-24HD

Overview
Dimensions Chart
Instructions
Price List
Order Form
 

 

Silicone: Cleaning and Sterilization

 

Cleaning: DocXS Silicone devices may be cleaned in a solution of hot water and mild soap. Synthetic detergents and oil based soaps should NOT be used, as they may be absorbed in subsequently leached out in transported fluids. If it is necessary to use a brush, only a very soft bristled one should be used. Rinse thoroughly in purified, (Distilled) water, taking care to flush the lumen of the tubing. Autoclave before the interior becomes dry. It is important that moisture be present on the inside of the tubes to avoid air locks during autoclaving.

Sterilization: It is critically important that a sterilization protocol be established for your specific product configuration!
Steam: Medical grade silicone tubing is able to withstand all common steam autoclaves sterilization cycles without adverse effects to the tubing. Autoclave cycles should be qualified by the user to their product configuration prior to sterilization.


Wrap in a non-linting material or place in a clean tray. Autoclave by one of the flowing:

• High-speed instrument Sterilizer: 10 minutes at 132 decrees Celsius and 30psi.
• Standard gravity Sterilizer: 30 minutes at 121 degrees Celsius and 15psi.


Ethylene Oxide, (EtO): the tubing is sterilized by normal EtO cycles that have been qualified by the user: aeration times must also be set by the user in accordance wit the product configuration. This method is NOT recommended, however unless you know how long it takes to complete the out gassing of the residual EtO and other byproducts for the system you use.


Dry Heat: Any usual dry heat sterilization method qualified by the user also may be used to sterilize the silicone tubing.
Radiation: Silicone has been shown to withstand gamma radiation sterilization with the usual exposure levels qualified by the user. Some physical properties may be slightly changed as a result of this form of sterilization. Effects that have been sometimes seen include: Tensile strength remains essentially unchanged; Minimal but measurable increase seen in durometer and tensile modulus at 200% elongation: Tear Strength and elongation may be slightly decreased.

• Exposure at 2.5 megarads produces minimal physical property changes, even at 200% elongation.