Disposable Endoscope Spray Catheter
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Single-use endoscopic spray catheter for irrigating and delivering hemostatic agents, dyes, tissue glue and other liquids under endoscopy. 1.8mm & 2.3mm diameters, 1200–2600mm working lengths, with a direct-injection or misty nozzle.
PURETH disposable endoscope spray catheters are used under endoscopy to spray and irrigate hemostatic drugs, dyes, tissue glue and other liquids onto the target site. One range covers bronchoscopy to enteroscopy — 1.8mm for narrow channels and 2.3mm for standard channels, with working lengths from 1200mm to 2600mm.
Two nozzle styles are available: the direct-injection (A) tip delivers a focused jet for precise, localized delivery, while the misty (B) tip produces a wide, fan-shaped mist that coats the mucosa evenly — ideal for hemostatic spraying and chromoendoscopy. The proximal luer-lock connector fits a standard syringe, and the anti-twist catheter resists kinking for a smooth, uninterrupted flow.
Key Features
- Wide spraying range — the misty nozzle covers a broad mucosal area in one pass for fast, efficient application.
- Uniform distribution — an even, fine fan mist delivers consistent coating without pooling or missed spots.
- Direct-injection option — a focused jet (A) for precise delivery to a specific lesion or bleeding point.
- Anti-twist design — the catheter resists kinking and keeps the lumen open during manipulation.
- Proximal luer-lock connector — fits a standard syringe.
- Sterile, single use — one patient, one device; no cross-infection, no reprocessing.
- Complete size coverage — 1.8/2.3mm × 1200–2600mm for bronchoscopy, gastroscopy, colonoscopy & enteroscopy.
FAQ
What is the spray catheter used for?
Under endoscopy it is used to spray and irrigate hemostatic agents, dyes and tissue glue onto the target mucosa. Typical uses include washing and clearing the field, applying diluted epinephrine or other hemostatic solutions, chromoendoscopy dye spraying, and delivering tissue glue.
What is the difference between the A and B nozzles?
The suffix A is the direct-injection type that delivers a focused jet, suited to precise, localized delivery. The suffix B is the misty type that produces a wide, fan-shaped mist for even coating of a broad mucosal area, such as dye or hemostatic spraying.
Which diameter and length fit a bronchoscope, gastroscope or colonoscope?
The 1.8mm × 1200mm models suit bronchoscopes; 1.8mm × 1800mm suits gastroscopy. The 2.3mm × 1800mm models suit standard gastroscopes, 2.3mm × 2300mm suits colonoscopy, and 2.3mm × 2600mm is used for enteroscopy.
How does the catheter connect to the fluid source?
The proximal luer-lock connector fits a standard syringe. The anti-twist catheter keeps a smooth lumen during manipulation, so the liquid passes through without kinking or blockage.
Is the catheter sterile and single use, and what documents are available?
Yes, it is a single-use device supplied sterile for one patient only, eliminating cross-infection and reprocessing. PURETH products are manufactured under an ISO 13485 quality management system; export documents, free sale certificates and market certificates (such as CE) are provided or confirmed at the order stage. Please send your destination country and model list.
The final order-code letter selects the nozzle type:
| Suffix | Nozzle Type | Typical Delivery |
|---|---|---|
| A | Direct-injection type | Focused jet to a precise point |
| B | Misty type | Wide, even fan mist over a broad area |
| Model | Diameter (OD) | Length | Nozzle Type | Scope of Use |
|---|---|---|---|---|
| ST-18-1200-A | 1.8 mm | 1200 mm | Direct-injection | Bronchoscopy |
| ST-18-1200-B | 1.8 mm | 1200 mm | Misty | Bronchoscopy |
| ST-18-1800-A | 1.8 mm | 1800 mm | Direct-injection | Gastroscopy |
| ST-18-1800-B | 1.8 mm | 1800 mm | Misty | Gastroscopy |
| ST-23-1800-A | 2.3 mm | 1800 mm | Direct-injection | Gastroscopy |
| ST-23-1800-B | 2.3 mm | 1800 mm | Misty | Gastroscopy |
| ST-23-2300-A | 2.3 mm | 2300 mm | Direct-injection | Colonoscopy |
| ST-23-2300-B | 2.3 mm | 2300 mm | Misty | Colonoscopy |
| ST-23-2600-A | 2.3 mm | 2600 mm | Direct-injection | Enteroscopy |
Code structure: ST = spray catheter · first group = diameter ×10 (18 = 1.8mm, 23 = 2.3mm) · middle group = working length (mm) · final letter: A = direct-injection nozzle · B = misty nozzle.
Applications
Endoscopic irrigation and agent delivery across the respiratory and digestive tracts — one range covers bronchoscopy to enteroscopy.
Bronchoscopy
1.8mm × 1200mm models fit narrow bronchoscope channels for washing and delivering hemostatic or other solutions in the respiratory tract.
Gastroscopy
1.8mm × 1800mm and 2.3mm × 1800mm models for hemostatic spraying, field irrigation, dye chromoendoscopy and tissue-glue delivery in the stomach.
Colonoscopy & Enteroscopy
2.3mm × 2300mm for colonoscopy and 2.3mm × 2600mm for enteroscopy — direct jet or wide mist as the procedure requires.
