The materials used in the design of a multi-lumen catheter will impact the performance of the device. Material Considerations for Multi-Lumen Catheters For example, percutaneous transluminal coronary angioplasty catheters typically have lumens of varying sizes and shapes. However, there is no set design for the lumens inside the catheter, as it is possible to size and shape the lumens based on the requirements of the catheter and what it will be used for. Both double and triple lumen catheters are often used for peripherally inserted central catheters. Many triple lumen catheters also have a design that is symmetrical, with the cross-section looking like a peace symbol. For example, a triple-lumen catheter could have one large-diameter lumen and two with smaller diameters.ĭouble lumen catheters are sometimes referred to as double-D lumen catheters in reference to the shape of each lumen in some designs, i.e., two semicircles. It is also possible to design lumens with various sizes and shapes within the same catheter. In some situations, it is even possible to have more than five lumens. Multi-lumen catheters often feature two or three lumens, although four and five-lumen designs are also common. To speak to one of our engineers about your idea for a new multi-lumen catheter device, please get in touch by completing the form below. Instead, each lumen has its own exit point, allowing the treatment to pass through one of the lumens and out of its exit point into the bloodstream Those capabilities include infusing drugs while monitoring flow rate, as well as flushing, cooling, heating, and aspiration.Ī crucial benefit of multi-lumen catheter design is that treatments inserted into the lumens do not mix inside the catheter. However, multi-lumen catheters also have other capabilities. This can include using the separate lumens to administer different treatments. However, the multi-lumen design allows more than one activity to take place during the same procedure. As it is a single catheter, there is only one entry point. In simple terms, a multi-lumen catheter is a single catheter with multiple internal channels or lumens. They can also be designed with a wide range of performance characteristics.įurthermore, advances in the design of catheter devices are opening up new opportunities and making it possible to create new multi-lumen catheter products that will improve the treatment and diagnosis of patients with various complex conditions. The adjacent orifices at the tip of the end hole of the double-lumen catheter appeared to permit interaction of the two effusing streams of the incompatible drugs, whereas the staggered orifices of the triple-lumen catheter reduce this interaction.Multi-lumen catheters are used for several different applications, including highly complicated procedures. In some cases, millimeter-size fragments of phenytoin precipitate were seen to dislodge from the tip of the double-lumen catheter. Infusion through the double-lumen catheter resulted in an average of 6% loss of phenytoin to precipitate, which, on microscopic examination, appeared as spindle-shaped crystals 25 to 50 microns in length and 5 to 10 microns wide. White clouds of phenytoin precipitation were observed near the tip of the double-lumen catheter but not the triple-lumen catheter. Video recordings were made of drug interactions, and assays of phenytoin concentration were performed on samples of the circulating fluid. Flow conditions and drug infusions in the venous model were designed to mimic the in vivo clinical situation to evaluate two central venous catheter types, a double- and a triple-lumen catheter. This study utilized an in vitro model flow system to examine the physicochemical phenomena that occur when two incompatible drugs (phenytoin and total parenteral nutrition) are simultaneously administered through multilumen catheters. Though there are no known documented reports that this practice has been responsible for harmful events in patients, likewise there are no published data to verify the safety and efficacy of this practice. Multilumen catheters are commonly used to simultaneously administer incompatible drugs to critically ill patients.
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