How are these different to the previous venipuncture arm models?
While the idea of the model is the same, the components have been updated to improve the teaching and learning experience. With the new skin locking system and modular veins of the Standard and Advanced Arms, set-up is much easier. The modular veins also mean that you only need to replace the individual section when needed, reducing the ongoing cost of consumables.
We already have the Limbs & Things Standard Venipuncture Arms, are we able to upgrade to the advanced venipuncture arm?
Yes. Adding the Pressurized Venipuncture Arm Mock Blood System to your Standard Arm serves as an upgrade to the Advanced model. The pressurized system gives a consistent and realistic blood pressure, for true-to-life training.
Can we use the new arm trainers and consumables with our existing stock?
When the new IV arms were introduced in 2021, improvements were made across the entire product range following customer research, and the old components were phased out. While the new components are similar to the original product, the newer designs are optimal when used together, making them more cost effective and overall, more efficient. Because of this, we would not recommend using the old parts with the newer trainers.
The fake blood pack is listed as a consumable, how often do we have to replace it?
The arm trainers are supplied with a 2.5l blood starter pack jug containing a measure of concentrated blood. When diluted (as per the instructions) the 2.5l of fake venous blood can be fed into the blood system and emptied back into the jug at the end of a session.
The update formula of the blood contains an EU approved preservative that extends the life of the solution, making it safer to use over extended periods. Once the concentrate has been diluted with water, we advise that the sealed jug is stored in a cool, dark place between uses. Monitor periodically to check for any crystallisation or separation, if you observe any changes, we would recommend replacing the solution. Depending on usage, one 2.5l jug of diluted blood concentrate can last around 12 months.
The included preservative also makes the solution safer for extended skin contact and disposal less hazardous.
Can we use existing equipment with the Limbs & Things phlebotomy training arm?
Yes. The venepuncture arm supports use of standard needles and cannulas, however, we recommend use of the following:
- 22 or 20 gauge cannulas (0.7mm to 0.9mm needle width)
- 21 gauge needles (0.8mm needle width)
Wider gauge needles can be used, though this can reduce the lifespan of the veins and arm skins.
The venipuncture training arm specifies they contain latex, what risk factors are there for allergy sufferers?
The tubing of the modular veins (in the Standard and Advanced) and one of the Basic veins contain latex, as the material supports more sticks than the latex-free alternatives. When assembled, the arm veins are covered with the latex free arm skin and are not directly accessible.
Those handling the veins during assembly, and/or disassembly, should be aware of the product’s allergen warning and take necessary precautions to avoid direct contact with the internal tubing.
- Can students perform intravenous cannulation on this advanced venipuncture and injection arm?
Yes. The Limbs & Things arm trainer range supports IV cannulation. Used with a simulated patient, you can also practice aspects of the procedure that are commonly tested with this skill.
Troubleshooting
My advanced pump doesn’t pump up very high, I find it continually needs to be ‘re-pumped’
Check that the clip on the arm tube leading into the advanced pump is closed. If this clip is open, no pressure can be built up.
The advanced arm pump has been designed to stop pressure from overbuilding in the veins. This extends the use of the veins dramatically but at the cost of requiring more regular re-pumping.
The gauge dial on the front of the pump is not supposed to exceed the green zone and the arm should still provide flashback on cannulation as long as the dial is above the red zone.
My advanced pump will not prime the arm with blood
Check the following things on your trainer:
- Both white clips on the arm tubing are open
- The red slider on the advanced pump is all the way to the left
- Check that the veins inside the arm are not kinked or blocked
- Squeeze the pump bulb 5-10 times to initiate blood flow
If blood still does not flow, there may be an issue with the valve inside the advanced pump. Contact customer services or your local rep regarding the issue.
Can I use the blood delivery systems from my old venipuncture arm units on my new arm trainers?
While it is possible, the higher pressure may cause damage to the newer arms and void your warranty.
What has changed between the new advanced pump and the older version?
Improvements to lower the pressure in the arm were implemented into the advanced pumps. This gives a more realistic flashback on cannulation and extends the usage life of the veins.
My advanced pump is leaking blood during use
There are two common causes of a leaking pump:
- The pump is overfilled - No more than 300ml of blood should be in the pump at any one time
- Fittings and tubes are only partially connected - Check joins around the suspected leak. You may need to open up the pump to check some joins
There's blood pooling under the arm skin during use
Check the connections between the vein modules. If there's no evidence of leakage, check the veins around the common injection points, it may be a sign that the vein module needs to be replaced.
