The role of Injector Pens in Self-medication systems
Injector pens are critical components that precise drug delivery while painless injection medication.
① Mature rotary dose adjustment and push-button activation，easy to use
② Bay-lock connection and sliding screw for easy and quick cartridge installation
③ For people who need frequent injections, it's more convenient, more accurate, and less painful.
Injector Pen
Sunny sells various types of injector pens
Automatic beauty injector pen
Reusable injector pen (metal pen)
Electric pen injector
Where Injector Pen in Our One-Stop Self-medication Supply?
One-stop self-medication solutions, precise and reliable in every aspect.
From the core injection device to the external accessories, we not only provide injector pens, but also offer complete supporting guarantees. Among them, the injection device, as a key component, directly affects the safety and stability of the self-medication and we are the reliable "every link" you can count on
Why choose us?
· Precise Matching: Customized injector pens specifically for your injection liquid type
· Reliable Quality: Rigorous testing to ensure accuracy and sealing performance
· Quick Response: One-stop supply to shorten delivery time
· Full Support: From selection to use, technical team available online at all times
Not just providing injector pens - but also peace of mind
Whether it's insulin, weight loss medication, or special syringes, we can offer you suitable self-medication solutions.
Why Self-medication Users trust Sunny Injector Pen
high dosage accuracy and safety
01
full size range
support （plastic / metal）
02
injection liquid and injector pen compatibility solutions
03
Custom design based on drawings or specs
04
CE/ISO13485 support & compliance
05
Our Quality Control – What Risks We Help You Eliminate
1.Routine Material Testing: Ensures each injector pen meets material compatibility and safety requirements before delivery.
2. Dosage Accuracy Testing: Simulates actual usage conditions to prevent varying temperatures and error risks.
3.Batch Consistency Control Guarantees stable performance across mass production and long-term supply.
Production Process
Mold Injection Area
Assembly area(500㎡ Class 100,000 series jet purification assembly workshop and 400㎡ reusable pen assembly workshop)
The primary goal of injector pens is to increase patient adherence by making it easier and more convenient for people to use injectable therapy. This is especially problematic with injectable medications given the extra work associated with an injection, as well as the potential aversion to self-injecting medication.
Injector pens increase patient adherence by increasing the ease of self-administering injectable medication, as well as the portability of injection medication. Furthermore, injector pens are easier to handle and use than vials and syringes, making them useful in people with low dexterity, cognitive or visual impairment, or those who worry about being able to properly use a vial and syringe. For medications which do not follow standard dosage in all people, injector pens may be designed to enable easier and more accurate administration of an exact dose, whereas a vial and syringe requires the person to prepare the correct dose themselves. Injector pens may also remove stigma or fear around the use of injection medication in public environments, such as insulin before a meal at a restaurant.
Combination injector pens which include multiple medications used to treat a disease are designed to reduce the number of injections a person must use to administer their medications. The reduction in number of injections required may decrease the risk of non-adherence due to forgetfulness or unwillingness to self-inject medication.
Components of Injector Pen
Insulin reservoir
This is a clear plastic container that holds the insulin in the pen. You can see the “quality” of the insulin (like if it's cloudy or clear) and how much insulin is left in the pen. Some pens have insulin cartridges (reservoirs) that you can replace. Other pens are disposable — you throw them away once the insulin reservoir runs out.
Pen cap
The cap protects the insulin reservoir from damage when you're not using the pen.
Rubber seal
The rubber seal is where you connect a single-use needle for an injection.
Needle
Needles for insulin pens are single-use, which means you only use them for one injection and then throw them away. Each needle comes in a sterile protective container. You remove the needle from the container and attach it to the pen before an injection. Pen needles come in different sizes. Talk to your healthcare provider to choose the pen needle that's best for you.
Dosage knob
This is a knob you turn to select the insulin dose you need.
Dosage window
This shows the number of units of insulin you select using the knob.
Injection button
Once you inject the pen needle, you press the injection button to give the insulin dose.
Label
The label tells you the type and brand of insulin in the pen and its expiration date.
How Injector Pens Work
Injector pens have an attached insulin cartridge rather than using a syringe and separate vial. Pens contain cartridges that last somewhere between 2-4 weeks and must be disposed of after expiration or when empty. injector pens require injector pen needles that are replaceable and need to be changed and disposed of after each injection. Pen needles are usually thin and short, between 4-6 mm, for optimum comfort. There is no need to pinch up the skin with these shorter needles; just inject straight into the skin. If you are using longer pen needles between, 8-12.7 mm, then you need to pinch up the skin to prevent injecting the insulin directly into muscle. Most pre-filled pens must be discarded within 14-40 days depending on the insulin type. Patients should always verify the time frame with the package insert as brands will vary. If the injector pen you are using contains 2 different types of insulin, you must roll the pen back and forth to mix the two insulins before each injection. Never use insulin that contains floating particles or clumps inside the cartridge. Remember, with any insulin, the injection site must be rotated each time.
The increasing prevalence of chronic diseases such as diabetes, arthritis, multiple sclerosis, and autoimmune disorders has driven the demand for self-administration devices like disposable pen injectors.
As an easy-to-use and less scary substitute for conventional syringes and vials, disposable pen injectors are available. Because of the discreetness, portability, and compactness of these devices, patients can give medication in a variety of settings with no discomfort or difficulty.
Numerous disorders are being treated with biologic medicines, such as monoclonal antibodies, growth factors, and hormones. Disposable pen injectors are a favored option for many of these medicines because of their simplicity of use, accuracy of dose, and reduced risk of contamination.
How Injector Pens Got Smarter
The first injector pen devices were introduced in the late 1980s as an alternative to vials and syringes. They allowed for more accurate dosing, better adherence, and less injection site pain.
As these devices evolved, they gained digital displays and memory of the most recent insulin doses. Eventually, data tracking “caps” or attachments were developed to help disposable injector pens keep better track of doses. Glucose sensing, continuous glucose monitoring, dosage timing, reminders, and other advancements followed. The first Food and Drug Administration (FDA)–cleared reusable smart injector pen was launched in 2017.
Smart pens are designed to be simple to use. Once you’ve downloaded the app to your smartphone and paired it with your pen, you’re ready to go. The device sends real-time data to the app via Bluetooth connection.
How Do You Use Injector Pens?
Step 1. Gather your supplies
Alcohol swabs
Injector pen
Pen needle
Cartridge if pen is the nondisposable type
Special container to throw out the used needles and disposable pens (sharps container). You can buy a sharps container at a drugstore or medical supply store. You can also use an empty laundry detergent bottle, or any other puncture-proof container and lid.
Step 2. Prepare the pen
Each pen will come with its own special instructions. Read the directions that came with your pen. Discuss the instructions with your diabetes care team or diabetes educator before injecting insulin. In general here is what to do:
● Wash your hands with soap and water or an alcohol-based hand sanitizer.
● Remove the pen cap.
● Check the medicine. Make sure it's the type your provider prescribed. Check that it has not expired. Also check that it's not discolored, frosted, or lumpy. If the medicine doesn't look right to you, don't use it. Get a new cartridge or a new disposable pen. Never share needles, injection pens or medicine cartridges.
● Some medicines need to be mixed. You can do this by rolling the pen between your palms about 20 times. You can also tip the pen back and forth.
● Wipe the pen tip with an alcohol swab.
● Attach a needle to your pen. Read the directions that came with your pen. They will give you the steps for attaching a needle.
● Remove the needle cover. If are using a standard needle you will need to remove the outer and inner cover.
Step 3. Prime the pen and set the dose
Prime your pen and make sure that it's working by doing a trial shot in the air before actually injecting your medicine. Then set the dose.
Dial the pen to give 2 or 3 units of medicine.
Hold the pen with the needle pointing up in the air.
Tap the barrel of the pen. This will make sure that any air bubbles in the cartridge float to the top of the cartridge.
Push down firmly on the pen's injector button. This will send medicine into the air. You should see a couple of drops of medicine come out of the needle. If nothing comes out, try doing another air shot. If medicine still doesn't come out after a second try, your pen may be low on medicine. Or the needle may not be connected properly. Look at the troubleshooting tips in the directions that came with your pen.
Set your dose. Dial the pen to give the amount of medicine you need to take. As you turn the dial, you should hear a clicking sound. Your pen is now ready to use.
Step 4. Inject your medicine
Choose an injection site. The belly (abdomen), upper arms, thighs, and buttocks are the most common sites to use. Don't use sites that are close to a mole or scar. Make sure sites are more than 2 inches away from your belly button. Ask your healthcare provider if you aren't sure where to inject. Don't inject in the exact same place every time. This could cause skin or tissue problems. Inject at a slightly different place each time, even if it's on the same body part.
Make sure the site is clean. Clean it with an alcohol swab. Let it dry.
Pinch up a fold of skin around the site you've picked. Pinching up the skin may not be needed for certain body types or if you are using a shorter needle. Ask your provider if you should pinch up your skin for the injection.
Hold it firmly with one hand.
In your other hand, hold the injection pen like a pencil.
Put the needle straight into the pinched-up skin. Thin adults or children may need to inject the needle at a slight angle. Your healthcare provider will show you what is best for you.
Make sure the needle gets all the way into the fatty tissue below the skin.
Push the pen injection button. Unless you take a very small dose, the injection should take a couple of seconds. You may have to hold the pen in place for 5 to 10 seconds after injecting the insulin. This will depend on the pen you are using. Carefully follow the instructions that came with your pen. Or follow the advice your diabetes care team or diabetes educator gives you.
Let go of the skin and remove the needle from your skin.
Step 5. After the injection
If you will be reusing the pen, remove the needle by unscrewing it.
Put any used needles or empty disposable pens into the sharps container. Make sure that needles point down. Never put your fingers into the container.
Factors Affecting the Performance of Injector Pen Technologies
Human Factors
To develop a successful injector pen injector, the users’ needs as well as their environments must remain a central focus throughout, from conception to market launch and beyond. Thus, the first step should be to gain a deep understanding of an individual’s needs regarding their disease management in general and their insulin administration devices in particular. Other critical aspects to consider while designing an injection device are people’s concerns, such as fear of needles and pain associated with injections; side effects of the drug; risk of injection-site reactions; and the people’s physical condition (eg, their dexterity, vision, and hearing), which may deteriorate with age. Any of these factors, if not addressed appropriately, may lead to reduced adherence to a prescribed medication regimen and eventually to poor treatment outcomes.
Technological Factors
To optimize insulin therapy and improve medication consumption as prescribed, pen injections must be as accurate, easy, painless, and free of discomfort as possible. Owing to the narrow therapeutic index of insulins, the accuracy of injector pen injectors is of critical importance. Indeed, delivering a smaller-than-intended dose may result in hyperglycemia, while delivering a dose greater than that intended may lead to hypoglycemia. Moreover, the daily dose of insulin needed for each person can vary greatly, depending on body weight and insulin sensitivity. Over the past 35 years, technological innovations have enabled the design of accurate pen injectors with small, single-use needles and low manual injection force to improve the overall injection experience for individuals, with improved accuracy and reproducibility of the delivery of insulin doses, including small doses, compared with vial and syringe.
How to Store Your Injector Pen
The ADA advises that new injector pens be refrigerated, and that insulin that is currently in use be kept at room temperature. It’s important to note that insulin kept at room temperature will last approximately one month, and that insulin should never be kept in areas exposed to extreme temperatures, such as in the freezer or in direct sunlight. A good general rule of thumb is to keep your insulin at temperatures that you’d be comfortable in.
Additionally, injector pens should not be stored with the needle attached, as this can affect the cleanliness and sterility of the needle, leaving you at risk of infection. Storing your injector pen with the needle attached can also lead to insulin leaking out. Always be sure to check the expiration date on your injector pen or cartridge prior to administration. When in doubt, refer to and follow the manufacturer’s instructions for storage.
Considerations for Using Injector Pens
Storage
Insulin should be stored according to the manufacturer’s guidelines. Generally, it should be kept in the refrigerator but can be stored at room temperature for a limited period.
Needle Changes
Replace the pen needle with each injection to prevent infection and ensure needle sharpness.
Education
Proper education on injector pen use is crucial. Consult with a healthcare provider or diabetes educator to receive thorough training. Read the information on the leaflet carefully as provided.
How Do I Troubleshoot Common Problems with My Injector Pen, Such as Leaks or Malfunctions?
Prime your pen according to the directions before each injection to avoid injecting air and to prevent the buildup of air bubbles in the pen that can lead to a malfunction.
To avoid leaking, always store your pen without the needle attached.
When attaching a new needle, hold the pen in an upright position pointing the tip into the air. Tap the side of the injector pen to move any air to the top of the fluid to be ejected in the priming shot.
Never depress the plunger without a needle attached to prevent the build-up of pressure.
If you notice any cracks in the outside of the pen or the plunger mechanism or the dose counter is not moving properly, discontinue use of that pen and return it to the pharmacy for a replacement.
Always count to 10 when injecting after the pen has been depressed before removing from the skin.
How Do I Choose the Right Injector Pen?
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