Frequently Asked Questions

The New Standard in Oxygen Therapy

Q: What is Uni-flo2?

A: Uni-flo2 is a new and innovative single prong nasal oxygen cannula for people who require low flow oxygen. It is a replacement for the old two-prong cannula that has been around for 60 years. The Uni-flo2 eliminates the tubes over both ears and cheeks and the restrictive harness under the chin. Because Uni-flo2 has a single tube on one side of the face, it is low profile and less visible.

Q: How does the Uni-flo2 work?

A: The Uni-flo2 uses a unique design. The device has a copper wire extruded into the wall of the plastic oxygen tubing which allows the device to be molded to the patient's facial structure. The nose piece is inserted into either nostril, pulled across the cheek and over the ear and shaped behind the ear. The tubing across the face is molded into the cheek bone and the copper wire holds the cannula in place. This device enables the user to move more freely.

Q: Does the Uni-flo2 provide the same POX as a two-prong cannula?

A: Yes. The Uni-flo2 has a patented nose piece design that has a "trumpet tip." While on-demand oxygen is easily inhaled, the trumpet creates a back pressure to minimize the loss of the oxygen during exhalation. The trumpet fits comfortably inside the nostril and is fully adjustable, so it can float inside the nostril with minimal skin contact. The Uni-flo2 doesn't pinch the septum like the old two-prong cannulas so the constant runny nose is eliminated.

Q: How does the Uni-flo2 stay in the nose?

A: The Uni-flo2 is designed with a multi-point strain relief system that includes the shape of the nasal insert, the copper wire in the tubing wall, contouring the tubing to the face and behind the ear, and attaching the security clip to clothing. The combination of all of these factors results in a secure placement in the nose.

Q: Does the single prong technology (Uni-flo2) work as well as the dual prong?

A: Yes, and sometimes better. Original performance data showed equivalency, while expanded validation studies not only showed equivalency but in 57 percent of the population found the single prong cannula provided higher primary mechanism of action (POX) readings. Clinical experience shows effective support of patients using the single prong approach.

Q: What is the impact on the patients when using the single prong cannula?

A: The Uni-flo2 single prong cannula provides an open breathing system by assuring that the nose is less than 50 percent occluded. Maintaining an open system prevents the creation of additional pressures, known as retrograde flow, in the patient.

Q: Can the Uni-flo2 be used on either side of the face?

A: Yes. If one side of the face is not available for any reason, such as feeding tube use, deviated septum, facial surgery, loss of ear, and so on, the cannula can be positioned on the opposite side of the face.

Q: Can the Uni-flo2 be used in both the right and left nostril?

A: Yes, the Uni-flo2 is interchangeable to either the right or left nostril. Clinical experience shows that the ability to change sides can reduce the adverse effects of sores, irritation and/or pressure ulcers.

Q: Does the Uni-flo2 prevent nasal sores and sores around the ears?

A: Yes. The Uni-flo2 is light weight and is specifically designed to eliminate nasal and ear sores. The nose piece is soft touch latex and the unit's copper wire in the tubing prevents ear abrasion when properly placed because the tube is securely held in place. 

Q: Is there any discomfort or concerns about the Uni-flo2 from delivering oxygen through just one prong?

A: No, our studies show a high level of customer satisfaction which has led many dual prong users to convert to the Uni-flo2. This conversion from dual prong to single prong is due to increased comfort and dignity, lower profile, less plastic on skin, and elimination of constriction at neck or throat. The single prong vortex design also provides increased oxygen availability for lung absorption.

Q: Can the Uni-flo2 be used with both continuous tanks and pulse delivery type devices?

A: Yes, the Uni-flo2 contains a universal female oxygen bushing that fits on all standard male connectors (ISO-STD 594). Additionally, internal validation studies show equivalent or better primary mechanism of action (POX) readings with the single prong in both continuous tanks and pulse delivery type devices.

Q: Will I have to change the oxygen flow rate prescribed if I change cannulas to the Uni-flo2?

A: No, the Uni-flo2 cannula is a low flow (1-6 liters) oxygen cannula. There is no reason to change the prescribed flow rate recommended by your doctor while using the Uni-flo2 nasal cannula.

Q: How is the Uni-flo2 cannula fitted?

A: Each package contains, “Instruction for Use” with clear user-friendly diagrams. The website, under “Products-Video” URL: provides additional support on how to fit the Uni-flo2 cannula.

Q: I am having difficulty using the clip to secure placement of the Uni-flo2. It seems to slide too freely. How do I fix this?

A: The security clip has a plastic loop designed to reduce the natural tendency of the tubing to be pulled downward by gravity, which can result in tightening of the tubing behind the neck and tugging over the top of the ear. It is important to attach the clip in a place that is toward the center of the body, for example, near the buttons or on the collar. This causes a slight bend in the tubing which allows the friction between the loop and the tubing to reduce downward movement of the tubing. Alternatively, some patients have experimented with placing a rubber band through the loop to increase the friction between the loop and the tubing.

Q: Can you set a feeding tube in the other nare when using the Uni-flo2 cannula?

A: Yes, the Uni-flo2 cannula makes it easier to use a feeding tube without occluding more than 50 percent of the nares. However, it is important that the feeding tube not completely occlude the second open nare when placed opposite the Uni-flo2 cannula.

Q: How do medical professionals utilize the Uni-flo2?

A: The medical profession uses the Uni-flo2 to solve many medical necessity issues, such as:

General surgery: head and neck

Plastic surgery: Otoplasty, Dermabrasion, Chin/Lip Augmentation, Cheek Implants, Septo-Rhinoplasties, Traumatic Emergency Repair

Otolaryngology: Endoscopic exams for oxygen dependent patients, Transnasal Micro Ethmoidectomy, Turbinoplasty, Conchal Cartilage Graft, Maxillary Antrostomy

Gastrointestinal Surgery: Pre/Post-operative Nasogastric Suction or Feeding

Pulmonology: Nasal Bronchoscopy

Facial Burn Treatment/ Long Term Burn Care

Rehabilitative Medicine

Long Term Nursing Care: Pre/Post-operative Nasogastric Suction or Feeding

Hospice Care

Home Use: Ongoing outpatient oxygen therapy

Q: Many patients are bedridden much of the day or have limited ability to raise their head. Is there an alternate method to wear the Uni-flo2 that is more comfortable and easier for the caregiver to attach for these patients?

A: Yes, many patients and their caregivers have found that the Uni-flo2 can be worn by simply directing the tubing around the ear toward the front of the body, rather than behind the neck, and then attaching the security clip to the clothing on the opposite side of the body where the nasal tip is inserted. Attaching on the opposite side of the body helps the loop control the sliding of the tubing as described above.

Q: Can the Uni-flo2 be used while sleeping?

A: Yes. The Uni-flo2 allows for full freedom to sleep comfortably since the user's face doesn't have to lay on the oxygen tubing against a pillow. This eliminates discomfort and tube imprinting on the face.

Q: Does the Uni-flo2 enable the sense of smell?

A: Yes. Because the Uni-flo2 uses only one nostril, the other nostril is free to smell normally. The user can smell aromas, such as food cooking, coffee brewing, flowers in the garden and so on. Patients can also wear the Uni-flo2 while eating.

Q: Why is the Uni-flo2 more expensive than dual cannulas?

A: The Uni-flo2 is manufactured with high quality materials, not hard cheap PVC plastics that are found in many dual-prong devices. The Uni-flo2 uses soft synthetic rubbers in its “Nasal Cavity Component” and a co-extruded copper wire in the first 14 inches of the tubing. This provides a “Memory Tube System” that adjusts to all facial conditions. The Uni-flo2 contains an active strain relief clip and four patches for high activity patients. The quality materials provide more comfort and longer in-use life cycles for patients.

Q: The patches are very helpful. Can they be purchased separately?

A: Yes. The patches are available in units of 12 coupons, each of which have two patches. Please see product code PS-007 on the Product Ordering tab on our website

Q: How long can I wear the Uni-flo2 cannula?

A: How long the Uni-flo2 is suitable for wearing depends on your uses and health. Generally medical professionals recommend changing the low flow oxygen cannula every two weeks, however, we have had a number of customers report that they have used their Uni-flo2 nasal cannula for approximately one month. The Uni-flo2 cannulas are designed to be secure and comfortable for routine low flow oxygen supplementation but they are disposable devices and are not recommended for long term use without replacement.

Q: How do I clean the Uni-flo2 single nasal cannula?

A: The Uni-flo2 nasal cannula should be cleaned whenever a film of dry nasal secretions is noted on the cannula, or the Uni-flo2 appears soiled, has fallen on the floor, or there is a question of its cleanliness. We recommend cleaning by placing the Uni-flo2 in a large clean bowl.  Mix 1 part vinegar and 1 part warm water and add a few drops of Dawn dish washing liquid into the bowl, mix well, and soak the Uni-flo2 for 15 minutes in the solution to remove dry nasal secretions. Thoroughly but gently hand wash and wipe down the Uni-flo2 nasal tip using a clean cotton swab and gauze 4x4. Do not pull on, or remove, the nasal tip. Once the Uni-flo2 is clean, rinse the Uni-flo2, including the tubing, carefully using clean, warm potable tap water. Hang the Uni-flo2 to air dry, avoiding placing pressure or stress on the nasal cannula tip. Please be sure the Uni-flo2 nasal tip and tubing are completely dry before use.

Q: Is the Uni-flo2 single nasal cannula suitable for wearing by adolescents?

A: The Uni-flo2 nasal cannula was designed to provide low flow oxygen supplementation to patients with a variety of adult facial sizes and contours.  The nasal tip is extremely soft and pliable, and, because of the design, can fit well in a range from small and narrow to wide and larger nares. If the Uni-flo2 is comfortable, and the nasal trumpet tip inserts into the patient's nares easily without any resistance, it should be suitable for adolescents requiring low flow oxygen.