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Pre-filled Multi-chamber Sequential Delivery Syringe

Prefilled, multi–chamber, sequential delivery syringes have more than one medication chamber separated by a rubber stopper with a valve that keeps the medications disparate and prevents air/gas from passing through the valve. The syringe comes prefilled with saline or heparinized saline in the posterior chamber. The clinician is then able to aspirate medication into the front chamber that is easily infused followed by a heparin or saline flush.

ChaSyr™ Prefilled Syringe

The ChaSyr™ is a multi-chamber sequential delivery syringe used to deliver a medication followed by a convenient and immediate flash from a single conventional syringe.  The heart of the chaser technology lies in a simple, two-part stopper assembly. the assembly keeps the chambers disparate during storage and through the drug delivery process while impeding error stored in the rear chamber from being delivered to a patient.

 

ChaSyr's unique design also prevents fluid reflux.  The rear chamber, most commonly will be filled in a manufacturing facility with a flush solution, such as saline or heparinized saline.  The front chamber in the chase for syringe is essentially the same as conventional syringes. 

 

There are no changes needed in user technique. The clinicians simply presses on the syringe plunger to deliver the medication from the front chamber and a tactile pressure change tells the clinician that the drug has been delivered and that the flash has started to infuse.  Because the syringe is flushed from a rear chamber there is virtually no drug wastage.  I'd be lying breaks and product manipulations are nearly cut in half, significantly reducing the likelihood of contamination which can lead to patient infections.

 

Using one syringe for multiple tasks saves clinician time and simplifies procedures.  In an era of too few nurses in healthcare, improving clinician efficiency and simplifying procedures will not only save time but also help reduce errors.

ChaSyr™ Prefilled Syringe

The ChaSyr DDS is a prefilled, multi–chamber, sequential delivery syringe.  In a nutshell, it means that the syringe has more than one medication chamber separated by a rubber stopper with a valve that keeps the medications disparate and prevents air/gas from passing through the valve.  The syringe comes prefilled with saline or heparinized saline in the posterior chamber.  The clinician aspirates medication into the front chamber using conventional practices. 

 

The ChaSyr DDS is then connected to a Y-site where the multiple medications are then injected into the patient serially.  After infusion of the medication from the front chamber, the clinician simply continues to push the syringe plunger.  When the rubber stopper (ChaSyr valve) comes in contact with the tip of the syringe a valve opens allowing the saline solution in the back chamber to flow through the valve thus flushing the Y-site and IV line of the original medicant and leaving a saline lock in the system.  The ChaSyr DDS with its prefilled inline post-flush simplifies nursing procedure, reduces line manipulations and line breaks by up to 50% thereby reducing contaminations rates and nosocomial infections.

 

For medications that are patient specific, a pharmacist/nurse is able to easily and accurately prepare and deliver an entire measured dose through a port/spike fluid pathway and into the IV container with safety.  This assures that the entire measured dose reaches the patient.  Let's look at how an infusion of a hazardous drug with the ChaSyr DDS product would work.  Looking at figure 1

  

It is shown that rear chamber of the ChaSyr  DDS has a prefilled saline flush, the front chamber of the ChaSyr  DDS is filled by the pharmacist with the drug of choice and a saline lock is placed in an extension set with a clamp.  Looking at figure 2 -

The clinician removes the cap from the extension set (only clinician exposure is to saline) and attaches the extension set to the catheter.  After opening the clamp, the syringe plunger is pushed thus infusing the saline pre-flush then the drug through the IV.  Looking at figure 3 -

 

The plunger is continued to be pushed until the valve in the first plunger is activated.  Saline then flushes the hazardous medication from the Y-site and the IV catheter thus rendering the catheter free of medicant and filled with the flush solution.

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