Lancet Device

A Lancet Device, or simply lancet, is a small medical implement used for capillary blood sampling. A Lancet Device is similar to a small scalpel but with a double-edged blade or needle. Lancet Device are used to make punctures, such as a fingerstick, to obtain small blood specimens. Lancet Device are generally disposable.

A Lancet Device, also known as a lancing device, is an instrument equipped with a lancet. It is also most commonly used by diabetics during blood glucose monitoring. The depth of skin penetration can be adjusted for various skin thicknesses.

Lancet Device Use:

Lancet Deviceare medical devices that employ a sharp needle or blade to prick the skin. Used to retrieve a blood sample, lancets are useful for blood sugar monitoring. These devices are in wide use in diagnostic centers, laboratories, hospitals, clinics, and homecare. Their simple design and ease of use make them ideal for self-diagnostics and diabetes monitoring.

Lancet Device Types:

There are many types of Lancet Devicefor sale on the market. Below is a list of the most popular types used for home monitoring.

  1. Disposable – single-use
  2. Flake – simply designed needle with a handle
  3. Stainless Steel – steel shaft with needle
  4. Blood Lancet Pen – ink pen design
  5. Pull Top – top pulls off to expose the needle
  6. Twist – the top twist off to expose the needle
  7. Universal – general purpose use
  8. Suction – puncture device with suction
  9. Pressure Activated – spring activated by pressing against the skin
  10. Push Button – spring activated by push button
  11. Side Button – spring activated by side button
  12. Fixed Depth – needle or blade penetrates to a fixed depth
  13. Safety Lancet – retractable needle or blade. Most are safety designed except for the stainless steel versions
    1. Manual devices require removing the shield and stabbing the patient or pushing a button to deploy a spring-activated needle. The spring activates by a top or side button.
    2. Passive devices activate the needle by pressure or contact with the sample area.

Categories:

There are three major categories of  Lancet Device–standard, safety and speciality. Standard models consist of a handle and blade.

  • The safety versions have a shield or a retractable needle or blade. They are currently in wide use and help prevent accidental sticks and reduce exposure to infections. The last category are speciality lancets. The most popular of this group is a vacuum device which is essenially a hybrid safety lancet.
  • While the standard models are the least expensive and employ a simple design, the safety versions are more popular. The safety versions are the first choice for in-home diabetic monitoring. Most hospitals and clinics also use the safety version to protect patients and caregivers from accidental sticks. These devices cover the needle or blade until use.
  • Safety lancets divide into two groups–manual or passive (fully automatic). Manual devices require removing the shield and stabbing the patient or pushing a button to deploy a spring-activated needle. The spring activates by a top or side button. Passive devices activate the needle by pressure or contact with the sample area.

Sizes:

Lancet Device are available in different sizes according to diameter and length. Most often, the diameter is a gauge (G) size, but sometimes it is millimeter (mm) measurement. The measurement of the length of the needle is in mm and affects the puncture depth. “A typical stainless steel Lancet Device has a diameter of 0.3–0.8 mm and penetrates 0.7–1.3 mm, with a depth of penetration directly related to pain.”3 “Although the extent of tissue injury and pain are less from the puncture by a thinner and shorter needle, the puncture by the very small size needle yields less blood volume which may not be sufficient for the glucose measurement.”4 Larger size needles produce bigger blood samples, while smaller sizes result in limited samples.

Diameter

For thickness, the higher the gauge number, the smaller the diameter of the needle. The lower the gauge number, the larger the diameter. A gauge of 18 is much larger than a gauge of 30. Lower gauged lancets produce a larger skin puncture and more patient discomfort. Since patients have many skin types, it is best to select a lancet that produces the perforation size needed to collect the blood sample required. A puncture that does not create enough of a blood sample suggests switching to a lower gauge number. On the other hand, a puncture that creates a larger sample size than needed indicates switching to a higher gauge number. Gauge sizes currently range from 12 to 38.

Length

The length of the needle that penetrates the skin is also an important factor. A needle too short may not produce enough blood sample, while a needle too long may produce more blood than needed and of course, more pain. Typical length sizes range from 1 to 3 mm.

FAQs:

What are Lancet Device used for?

Lancing devices prick below your skin to allow a blood sample.

Are Lancet Device and test strips the same?

A lancet device disrupts tissue to provide a blood sample. Test strips use the blood sample to determine blood glucose levels.

Are all Lancet Devicethe same?

No, there are many different types, but there are two basic categories—a standard device and a safety lancet. A lancet without a safety mechanism is simply a handle with an attached needle or blade. On the other hand, a safety device offers shielding for the needle until ready to extract a blood sample.

Do Lancet Devicerequire a prescription?

No, lancets are available without an Rx.

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