Quick answer: This is a double limb corrugated breathing circuit (15 mm, 1.6 m, without water trap) for the ResMed Astral ventilator. It has separate inspiratory and expiratory limbs in flexible, kink-resistant corrugated tubing. The 15 mm diameter is the smaller-bore option, generally used for paediatric or lower-flow ventilation as directed by a clinician. Single-patient use. ResMed reference code: 21309.
What is a double limb corrugated circuit?
A breathing circuit carries air between the ventilator and the patient. A double limb circuit has two separate paths — one delivering air to the patient (inspiratory) and one carrying exhaled air away (expiratory). Corrugated tubing has a ribbed wall that makes it flexible and resistant to kinking, which helps maintain a clear airway path during movement. The 15 mm diameter is the smaller-bore option, typically suited to paediatric or lower-flow use. The Astral supports single and double limb circuits through interchangeable circuit adapters, so this circuit is used with the double limb adapter fitted to the device.
Key features
- Corrugated, flexible tubing — resists kinking, moves easily with the patient.
- Double limb — separate inspiratory and expiratory flow paths.
- 15 mm diameter — smaller bore for paediatric or lower-flow ventilation.
- 1.6 m length, without water trap.
- Single-patient use — supports hygiene and infection control.
Specifications
| Specification | Detail |
| Product type | Double limb circuit, corrugated |
| Diameter | 15 mm |
| Length | 1.6 m |
| Water trap | No |
| ResMed reference code | 21309 |
| Compatible device | ResMed Astral series ventilators |
| Use | Single-patient use |
Is it compatible with my ventilator?
This circuit is designed for the ResMed Astral ventilator and is used with the double limb circuit adapter fitted to the device. After assembling or changing a circuit, the Astral requires a "learn circuit" procedure. Always follow your circuit configuration and your clinician's instructions.
Frequently asked questions
What's the difference between corrugated and smooth bore tubing? Corrugated tubing has a ribbed wall that is flexible and resists kinking; smooth bore tubing has a smooth interior that lowers airflow resistance. Your clinician will advise which is appropriate.
Who is the 15 mm circuit for? The 15 mm diameter is the smaller-bore option, generally used for paediatric or lower-flow ventilation. Confirm the right size with your clinician.
What does "without water trap" mean? A water trap collects condensation in the circuit; this version does not include one. A separate version with a water trap is also available.
Is it single-patient use? Yes — it is intended for single-patient use to support hygiene and infection control.
Can I get it delivered in Brooklyn or shipped nationwide? Yes — Task Supply Corp offers FedEx shipping throughout the continental U.S., plus local pickup and delivery in Brooklyn and all five boroughs of New York City.
This product is a medical device accessory. Use it according to the ResMed Astral user guide and the directions of your healthcare provider.