Infusion port systems

Impla.nta.ble Ports. The safest method of accessing the vascular system is by means of a vascular access device (VAD) or port. Older VAD designs protmded through the skin. The totally implanted ports are designed for convenience, near absence of infection, and ease of implantation. Ports allow dmgs and fluids to be deUvered directiy into the bloodstream without repeated insertion of needles into a vein. The primary recipients of totally implanted ports are patients receiving chemotherapy, bolus infusions of vesicants, parenteral nutrition, antibiotics, analgesics, and acquired immune disease syndrome (AIDS) medications. 

This system will perform both bolus and constant infusion studies with the microprocessor controller. In addition, variable or exponential infusion studies can be performed by using programs residing in a host computer to calculate constants which are sent to the controller through the serial port. 

SIMS Deltec http //www.deltec.com Access systems and ports, infusion pumps... 

The industrially manufactured two and three chambers are mixed just prior to infusion, by breaking the separation seals between the bag chambers. The content is mixed in the closed system and vitamins and trace elements can be added via an injection port prior to administration or administered as separate infusion solutions. Nutrition admixtures (all-in-one, all-in-two system) for the specific need of patients are prepared using industrially manufactured lipid emulsions and aqueous solutions containing amino acids, carbohydrates, electrolytes, vitamins and eventually trace elements. AU components are admixed in sterile empty infusion bags under conditions of aseptic handling (see Sect. 31.3). 

The infusion behavior is identical to standard VARTM processes where the vents are placed at the last location of fill. The membrane layer enables any point of the fabric surface to be connected to the vacuum port thus reducing the need for an optimized placement of the venting system. Nevertheless, the post-infusion behavior can be significantly different compared to standard VARTM processing. No resin bleeding occurs as the vent is placed on the impermeable membrane surface. Hence, the pressure behavior and consequently the overall thickness gradient and fiber volume... 

Park, S., Lee, S.J., Lee, M., Lee, M.S., Kim, G.M., Kim, M.D., Won, J.Y., Lee, D.Y., 2015. Prospective randomized trial comparing pushable coils and detachable coil during percutaneous implantation of port-catheter system for hepatic artery infusion chemotherapy. Abdominal Imaging 40, 595-600. 

The other advantage of this method is autonomy of the device action. The device is fixed on the patient,s neck and does not limit his movements. The patient who receives the infusion therapy does not require stay in the bed and constant observation by medical staff (Fig. 3). There are practically no mechanical reasons which can prevent to infuse drug into the catheter. "Push out" pressure is 400-500 mm of Mercury and resting of catheters exit port against any obstacle excludes possibility of its thrombosing and stopping of the system. 

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