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Syringes and needles in high demand

In recent years, consistent growth of the injectable drugs sector, along with vaccination procedures during the ongoing COVID-19 pandemic, has fueled a dramatic increase in demand for disposable syringes. Choosing syringes and needles has become increasingly complicated as the syringe industry has increased production capabilities to meet demand, and the market is expected to continue to grow at a compound annual growth rate of over 10% through 2025.

Before investing in syringes and needles for your medical practice, company, or organization, it is vital to thoroughly understand the equipment you are purchasing and to select with careful consideration. Not all syringes are the same; designs and features vary widely in order to serve an array of purposes. Read on for a helpful guide to choosing syringes and needles that best match your needs, and resources from trusted supplier MediDent Supplies.

For more guidance, see the Centers for Disease Control and Prevention’s latest guidelines on safe injection practices or visit the guidelines for injection safety in a dental setting.

For air/water syringes for dental delivery systems, please click here.


Hypodermic syringes

Hypodermic syringes are used with hollow hypodermic needles to inject liquid or gases into body tissues, or to remove them from the body. Most are disposable, and many come with an attached needle or with no needle at all (read on for more information on needles).

You can choose hypodermic syringes and needles based on the volume required for the injection and the desired pressure flow for the medication to be administered. Syringes will have the volume marked on the side of the barrel, measured in either cubic centimeters or milliliters. These units are the same: 1 cc = 1 mL.

The main parts of a hypodermic syringe are the plunger rod and plunger seal, the flange, the barrel, the tip, and the needle.

The main variation in syringes is found at the tip.


Hypodermic syringe types

Luer lock syringes

The most common type of syringe tip is the Luer lock. Luer lock tips allow for the tip to be removed and reattached securely. The needle hub locks onto the syringe with a push and a twist, like a bottle cap. The threaded mount helps keep the needle in place for increased safety and stability throughout the injection procedure.

Shop MediDent Supplies Luer lock syringes.

Slip tip/Luer slip tip syringes

The second most popular type of syringe tip is the “slip tip” or “Luer slip tip.” In this model, the needle hub is pushed straight onto the syringe without a twist to secure it in place. Instead, the tight fit of the hub secures the needle in place. Slip tip syringes are a quicker, simpler alternative to the Luer lock tip.

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Eccentric tips

Eccentric tips are used when a medication is being administered parallel to the skin, or when a substance is being injected into a surface vein. The tip is almost in line with the outer body of the barrel, which allows for closer access to the body’s surface. Eccentric tips are commonly used for aspiration of liquid medications.


Dental (aspirating) syringes

Dental syringes are used by dentists to inject anesthetic into a patient’s gums. They consist of a breech-loading syringe and a sealed carpule containing local anesthetic.

Aspiration is the removal of fluids or cells from the body. While most syringes are used to inject medication into the body, aspirating syringes intentionally remove fluid or cells, or they can create a vacuum for a few seconds before delivering an injection. This way a clinician administering anesthetic can be positive that the needle tip is located in the correct place.

Dental Aspirating Syringe 1.8ML

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A dental syringe features several complex parts that then work together to administer a local anesthetic solution: a thumb ring, a finger grip and finger bar, the barrel (where the carpule is placed), the piston rod and harpoon, which embeds into the rubber stopper, and a threaded tip (where the needle attaches). The anesthetic carpule itself is made of glass, features a rubber stopper at one end, and has an aluminum cap and rubber diaphragm at the other end.


Needles for hypodermic injections

Needles for hypodermic injections are hollow, with a hub on one end that affixes to the syringe. Needles come in a variety of lengths, most often measured in inches. Needle gauge size determines the diameter of the needle. The length and gauge of the needle required will vary depending on the depth of the intended injection- whether intradermal, subcutaneous, or intramuscular- and the viscosity of the medication being injected.

Standard hypodermic needles vary in length between 3/8 inch to 3-1/2 inch for intradermal or subcutaneous injections. Intramuscular injections require slightly longer needle lengths; usually between 7/8 and 1-1/2 inches. 1 inch needles are a common needle length.

Needle gauges generally range between 18-27. The lower the number, the wider the diameter of the needle. Larger diameter gauges work with more viscous medications and support denser skin penetration. Finer gauge needles (small diameter) can be less painful for the patient and suit lower viscosity medications. 23 and 25 gauge needles are the most common and suitable for most medication and vaccination injections.

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Image of Hypodermic Needle

Choosing syringes and needles

In addition to knowledge about the products themselves, choosing syringes and needles requires a thorough knowledge of best practices for injections and hygiene. See the CDC’s full guide to injection safety for more details. Before shopping, don’t forget to ensure you know the following:

  1. Which type of syringe is needed- hypodermic or aspirating?
  2. Which type of syringe tip is needed- Luer lock, slip tip, or eccentric?
  3. What is the volume of medication that needs to be administered, if any?
  4. What is the necessary needle gauge for the medication’s viscosity?
  5. How deep is the injection, and which needle length will be necessary?

Healthcare professionals big and small use and trust our MediDent Supplies Syringes and Needles to be the consistent, top quality and affordable solution to their syringe and needle needs. Please don’t hesitate to contact us with any questions.