The Olympus MD-495 silicone biopsy cap is a soft rubber valve cap that seals the biopsy/instrument port on Olympus flexible endoscopes, preventing air and fluid loss during a procedure. Supplied as a pack of 10, each cap is new and fits directly onto the endoscope’s biopsy inlet without tools.
What Does the Olympus MD-495 Biopsy Cap Do?
The biopsy port on a flexible endoscope is the entry point used for passing biopsy forceps, brushes and other instruments into the working channel. When no instrument is in place, the port needs to stay sealed otherwise insufflation air and irrigation fluid escape and the view and workspace become difficult to control. The MD-495 cap sits over this port and closes it, keeping the channel airtight and clean between instrument passes and while the scope is in storage.
Key Features of the Olympus MD-495 Biopsy Cap
- Model MD-495 sized and shaped to seat on the standard Olympus flexible endoscope biopsy port.
- Soft silicone rubber build that flexes to form a tight seal around the port opening.
- Pack of 10 enough to stock a busy endoscopy suite or biomedical service cart for routine cap replacement.
- New condition supplied unused, not refurbished.
- Tool-free push-fit design for quick, simple installation and removal.
- No high-concern chemicals in the material composition.
Olympus MD-495 Biopsy Cap Specifications
| Specification | Detail |
| Model / Part Number | MD-495 |
| Brand | Olympus |
| Product Type | Biopsy valve / instrument port cap |
| Material | Silicone rubber |
| Pack Quantity | 10 pieces |
| Condition | New |
| High-Concern Chemicals | None |
| Fitment | Olympus flexible endoscopes with a standard biopsy port — confirm port fit against your scope model before ordering |
Material and Seal Performance
The cap is molded from a flexible silicone rubber that compresses slightly as it seats, which is what gives it a snug, airtight hold on the port rim. This same flexibility lets the cap be pulled on and off repeatedly during a normal working day without splitting or losing its shape.
Who Uses This Biopsy Valve Cap?
- Endoscopy units and GI labs maintaining their own scope fleet
- Biomedical and clinical engineering teams performing routine scope servicing
- Independent endoscope repair and reprocessing centres
- Veterinary endoscopy practices using Olympus flexible scopes
- Teaching hospitals and training labs that need spare caps on hand
Fitting the MD-495 Cap to Your Endoscope
The cap pushes directly onto the biopsy port by hand no tools are required. Before ordering, check the port size and shape on your specific Olympus flexible endoscope model against the MD-495 profile, since biopsy port caps are not interchangeable across every endoscope family.
Frequently Asked Questions
What is the Olympus MD-495 biopsy cap used for?
It seals the biopsy/instrument port on an Olympus flexible endoscope when no instrument is inserted, stopping air and fluid loss and keeping the working channel clean.
How many caps come in one pack?
Each pack contains 10 individual MD-495 silicone biopsy caps.
Is this cap new or refurbished?
It is supplied new and unused.
What material is the MD-495 biopsy cap made from?
It is molded from flexible silicone rubber, with no high-concern chemicals in the material.
Will this cap fit my Olympus endoscope model?
The MD-495 is sized for the standard Olympus flexible endoscope biopsy port. Confirm the port dimensions on your specific scope model before ordering, as fitment can vary between endoscope families.
How often should biopsy caps be replaced?
Inspect caps regularly as part of routine scope maintenance and replace them as soon as you notice tearing, stretching, or a loss of seal, since a worn cap can allow air and fluid to escape during use.













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