Why is Pripsen discontinued in UK?

Pripsen (piperazine plus sennosides) has been discontinued in the UK, due to problems in sourcing raw materials. It is not manufactured elsewhere and therefore will not be available for import, although a number of countries do still have preparations of piperazine (as monotherapy) available.

What happens if threadworms get into your vagina?

Threadworms do not cause major health problems, and are usually not the cause of tummy pain. Scratching of the bottom can cause a red rash around the anus, which can sometimes become infected. In girls they can move into the vagina, causing itching and a vaginal discharge.

Why do I get threadworms all the time?

Causes of threadworms Scratching the anus or vagina, or wiping them after going to the toilet, can cause the eggs to stick to your fingertips or under your fingernails. If you don’t wash your hands, the eggs can be transferred to your mouth or on to food or objects, such as toys and kitchen utensils.

What kind of threading do you use for worms?

Traditional threading techniques for worms are metal removal or chip producing processes. Thread rolling, on the other hand, is a cold forging or chip-less process. A hardened cylindrical threading die rotates and presses into a blank workpiece, impressing the die’s thread shape into it.

Why do threaded rolled worms have to be self locking?

Thread lead and major diameter are usually dictated by load, speed, and environmental and physical requirements. In many cases, the screw or worm must be self-locking, which further restricts the choice of lead. To test for self-locking, the value of back-drive efficiency, Eb, must determined. If Eb is negative, the thread is self-locking.

How did the thread worm get its name?

Thread worms are scientifically known as Enterobius vermicularis, but are also commonly referred to as pinworms and seatworms. This species does not transmit to or from animals, although pets can harbor eggs in the fur. They get their names from a resemblance to cotton threads, which are visible to the naked eye.

What’s the best diameter for Acme worm thread?

A standard series of diameter-pitch combinations for Acme threads in most cases work well and can be used to start the design. Other popular, though not standard, series for worm threads also work well. Cold forming dictates a maximum depth/ diameter ratio, d/ D, depending on flank angle.