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Each endoscope is photographed individually. Check the photos for the light post and eyepiece, and ask us for closer images before you order.
Buyer's guide
Diameter is the width of the shaft
Diameter is the outside width of the endoscope shaft, stated in millimeters. ENT rigid endoscopes commonly come in 4.0 mm and 2.7 mm, and other sizes exist. In a rod-lens design, a larger diameter generally transmits more light and gives a brighter image. Which diameter a case needs is a clinical decision for your surgical team.
Angle sets the direction of view
The degree marking, often called the viewing angle, is the direction of view. A 0-degree endoscope looks straight along its shaft. A 30-, 45- or 70-degree endoscope looks away from the shaft axis by the marked amount. The shaft itself stays straight. Only the optics look off the axis. Which angles a tray needs is a clinical decision for your surgical team. Our guide to rigid endoscope angles and sizes explains direction of view, diameter and working length in more detail.
Camera, coupler and light post have to match
An endoscope has to connect to the camera and light cable you already run. Light post fittings differ between manufacturers, and an adapter is often needed between brands. The camera coupler also has to seat on the eyepiece. Check the fittings in the listing photos. Our guide to comparing Karl Storz, Olympus and Stryker endoscopes covers cross-brand checks. Matching an existing tower? Send us your camera head and light cable models, and we will check them against the listing photos.
Specifications
| Specification | Common values |
|---|---|
| Endoscope Type | Sinuscope, laryngoscope, otoscope, nasopharyngoscope |
| Diameter | Commonly 2.7 mm and 4.0 mm |
| Angle | Commonly 0, 30, 45 and 70 degrees; 90 degrees on some laryngeal endoscopes |
| Direction of View | Straight ahead at 0 degrees; angled away from the shaft axis at higher markings |
| Working Length | Commonly about 18 cm for sinus endoscopes; varies by type |
| Optics | Rigid rod-lens |
| Light Post | Fitting varies by manufacturer; adapters may be required |
| Eyepiece | Standard eyepiece for a camera coupler; check it against your camera head |
Trusted brands
Manufacturers of this equipment include:
MachidaClear Choice Medical is an independent supplier. We are not affiliated with, sponsored by, endorsed by, or an authorized dealer for any manufacturer named on this page. Manufacturer names and model designations appear solely to identify equipment and describe compatibility.
Buyer FAQ
Can I use a scope from one manufacturer with another manufacturer's camera?
Sometimes, but do not assume it. Many camera couplers clamp onto a standard eyepiece, so a coupler may seat on another maker's endoscope. Light post fittings differ more often between manufacturers, and an adapter may be needed. Compare the model numbers and check the manufacturer documentation before you buy.
Is the scope autoclavable?
It depends entirely on the specific scope. Autoclavable and non-autoclavable versions of otherwise identical scopes exist, and the distinction is marked on the instrument by the manufacturer. Check the marking and the manufacturer instructions for that model before processing.
What do the listing photos show?
They show the actual scope for sale, not a catalog image. If a view you need is missing, ask before you buy and we will send it. That includes the light post or a closer image of the distal tip.
Do items arrive sterile?
No. Scopes ship non-sterile and are processed by your facility per its own protocols and the manufacturer instructions for that model before clinical use. Before we acquire a scope, the hospital or manufacturer it comes from must clean and sterilize it.
How do I choose which angle to buy?
The angles a tray needs depend on the procedures your surgeons perform, which is a clinical decision for your team. To replace or add to an existing set, match the angle marked on the endoscopes you already use. Then compare the diameter, working length and light post fitting.
Do you also sell light cables, couplers and adapters?
Yes. Light cables and light sources have their own sections, and couplers and camera adapters are listed with the scopes and camera heads. Tell us which camera and light source you run, and we will check the fittings against the listing photos before you buy.
What do 0, 30, 45, and 70 degrees mean on a rigid endoscope?
The degree marking identifies the direction of view relative to the rigid endoscope's shaft. A 0-degree scope views along its long axis; 30-, 45- and 70-degree scopes look away from that axis by the marked amount. The marking does not describe a bend in the shaft, the shaft diameter or the working length. Those are separate specifications and can differ even among scopes with the same direction of view. A listing should identify the stated angle so buyers can distinguish the optical configurations.
What is the difference between a rigid and a flexible endoscope?
A rigid endoscope has a fixed shaft and optical path, while a flexible endoscope has a flexible insertion tube and a different imaging construction. The two terms describe how the instruments are built, not which one should be used for a particular procedure. They may also differ in dimensions and connection details. A product listing should identify the scope type clearly, because the words rigid and flexible refer to different equipment families.
What is a rod-lens rigid endoscope?
A rod-lens rigid endoscope uses glass rod elements inside a rigid shaft to carry the image toward the eyepiece or camera connection. Illumination travels separately through light-transmitting fibers. Rod-lens identifies the optical construction; it is not the name of a diameter, direction of view or working length. Those measurements vary by model. The term helps explain the type of scope shown in a listing without implying that every rod-lens instrument has identical fittings.
What does working length mean on a rigid endoscope?
Working length is the usable length stated for a rigid endoscope. It is different from overall length, shaft diameter and direction of view. Two scopes can share a diameter and direction of view but still have different working lengths. This distinction matters when reading a listing because the number should describe the same measurement on both products. If the source gives only overall length, it should not be presented as working length.
About ENT rigid scopes
Modern rigid endoscopy rests on the rod-lens design, in which the traditional arrangement of small glass lenses separated by long air gaps is inverted: long glass rods separated by short air gaps. The result is dramatically more light transmission and a wider field in a narrower shaft, and it is the reason a 2.7 mm scope can produce a usable image at all. Illumination is delivered separately, through fiber bundles running the length of the shaft to a post at the proximal end.
Two measurements separate most ENT rigid endoscopes: diameter and angle. Diameter trades image brightness against size. Angle sets where the optics look. Even a 70-degree endoscope advances along the axis of its own straight shaft while its optics look well off that axis. Working length is a third, separate measurement.
Laryngeal and nasopharyngeal scopes follow their own conventions, with angled rigid oral scopes used for laryngoscopy and stroboscopy, and otologic scopes running smaller diameters for the ear canal and middle ear. Across all of these, the practical constraint is the same: the scope has to connect to the camera you own and to the light cable you own.
Many failure modes of a rigid endoscope are visual. Held up to a light source, broken illumination fibers appear as dark specks in the ring at the distal tip. The distal lens should be free of chips and crazing. The shaft should be straight, with no dents that would indicate an impact. Looking through the eyepiece at a printed page, the image should be clear and neutral rather than hazy or yellowed. And the eyepiece and light post should be intact and firmly attached.
Every endoscope here is photographed individually, so you can start that check before you buy. We can take extra images of the tip, the shaft or the light post on request. If you are matching an existing tower, send us the camera head and light cable models. We will check them against the listing photos. Our guide to buying new and used surgical instruments covers the checks that apply to any listing.
Related pages
- Rigid endoscope angles and sizes guide
- Karl Storz, Olympus and Stryker endoscopes guide
- Urology Working Elements
- Neurosurgical Kerrisons
- Browse all surgical scopes
Not sure it is the right match? Call us at 727-482-5016 before you order. Tell us what you are matching to and we will confirm fit against the listing photos.