Discover the New Standard in Capillary Imaging

Ultra-clear imaging and quantification. Switch between 200x and 720x optical magnification. Trusted in medical journals. From GOKO, Japan's capillaroscopy leader with 70+ years of optical expertise.

Unprecedented 720X & 200X Optical Magnification
Cystal-clear capillary imaging, with optical―not digital―zoom.
Proven by Science, Trusted by Experts
Trusted by global researchers; featured in peer-reviewed medical journals.
Dual-Mode Observation: Nailfold to Full-Body
Supports both stand-based and handheld capillaroscopy.
Unique Non-Reflex Observation
Enhances measurement accuracy by eliminating glare.
Quantification Software (GOKO-VIP)
Enables blood flow velocity analysis―ideal for clinical studies.
Multi-Device Compatibility
Supports Windows, macOS, iPad (Type-C), and Android.
One-Second Magnification Switch
Switch instantly between 200X and 720X with no lens change.
Deep Depth of Field & Superior Color Reproduction
Observe detailed flow dynamics across all regions of the body.
Japanese Craftsmanship by GOKO
Over 70 years of optical innovation. Developed and manufactured in-house.
Compliant with CE Standards
EN IEC61000-6-1:2019 / EN61000-6-3:2007/A1:2011

Instant Optical Zoom from 200x to 720x ― Sharper Than Autofocus Can Reach

The latest model, GOKO Bscan-ZD, achieves 720x optical magnification (on a 20-inch monitor).
Unlike digital zoom, this is true optical magnification, meaning the image remains crystal-clear with no degradation.

Even at 720x ― where autofocus systems typically fail to achieve accurate focus ― GOKO ensures outstanding clarity.
The 2024 update further enhanced blood flow contrast and magnification.

The result: a crystal-clear, uniform image across the screen ― ideal for both quantitative analysis and observational needs such as:
― identifying subtle skin pigmentation
― assessing scalp color changes

This exceptional imaging capability is one of the key reasons GOKO products are trusted by professionals worldwide.

Tongue capillaries【Wider view 〜 Massive zoom】

Wider view
Massive zoom

Experience the Next Level!

GOKO pushes the limits of precision capillary imaging. With the 2024 upgrade, experience even higher magnification and enhanced color reproduction―designed to capture microvascular details with stunning clarity.

See details

Nailfold Capillaries (at Lower Magnification)

Even at a relatively low magnification of 200x, individual capillaries are now easier to distinguish. Blood cell movement becomes clearer, enabling faster capture of flow velocity and easier counting of tiny capillaries.

Previous version
175X
New version (Ver.1.1)
200X, upgraded color reproducibility

Fine Mole (Approx. 1 mm in Diameter)

Color rendering has been refined to better represent subtle skin features such as moles, hair, and melanin―when photographed alongside capillaries, without requiring any mode changes or special settings.

Previous version
175X
New version (Ver.1.1)
200X, upgraded color reproducibility

Nailfold Capillaries (at Higher Magnification)

Enhanced color reproduction improves the visibility of red blood cells, making both observation and quantification of blood flow more accurate and reliable.

Previous version
620X
New version (Ver.1.1)
720X, upgraded color reproducibility

Trusted Worldwide―Backed by Science

Recognized by global medical societies―including the American Society of Plastic Surgeons―GOKO's capillaroscope systems are chosen by top researchers and clinicians.
Our hardware and software are used together in numerous peer-reviewed medical journals, proving the credibility of our fully integrated technology.

Explore the full list of publications featuring the GOKO Bscan series on our [Downloads] page.

Download List of Medical Papers

Deep Depth of Field for Vivid, Layered Imaging of Capillaries and Blood Flow

With improved depth of field―10% deeper at high magnification and 35% deeper at low magnification compared to our previous models―the GOKO Bscan-ZD captures layered capillary structures and microcirculation with greater clarity.

This enhancement allows vivid imaging across various body regions―including the nailfold, lips, and scalp―ideal for both quantitative analysis and clinical evaluation.

Capillaries of the back of the lower lip (Massive zoom)
Scalp capillaries (Massive zoom)

Two Observation Styles―Nailfold Stand and Handheld in One Device

The GOKO Bscan-ZD supports both stand-based and handheld observation, allowing you to examine capillaries not only in the nailfold but also across the entire body with stability and clarity.

Stand (Included with GOKO Bscan-ZD/Z)

Designed for nailfold observation, the stand allows precise adjustment in three axes (X, Y, Z).
The finger rest is shaped for easy, stable placement―even for users with long nails―and includes GOKO's original camera shake prevention cap.

Movable in X, Y, and Z Directions

Y-axis: Finger rest moves back and forth
X-axis: Finger rest moves side to side (left-right)

Comfortable for Long Nails

Designed to accommodate long fingernails
Easy and stable finger placement

For full-body surface imaging, a handgrip and non-reflex cap are included in the GOKO Bscan-ZD Researcher's Set and are also available as optional accessories for the standard model.
These tools ensure comfortable handling and stable, clear imaging.

Camera Handgrip (Standard with GOKO Bscan-ZA and with the Bscan-ZD Researcher's Set)

Lightweight and ergonomic for all-day use, the grip is optimized for easy holding and operation―even for long sessions.

Easy Focus and Magnification Control

Adjust both focus and magnification with one hand
Observe blood flow without pressing on the skin

Switch Between 200X and 720X Instantly ― No Lens Change Needed

Capillary scope - you can switch between 'whole image' and 'super magnification' in only one second.

Zoom instantly from 200X to 720X ― no lens changes, no delays.
Shift from wide-area views to high-detail observation of capillary structure and blood flow dynamics, all in just one second.

In addition, a click-stop mechanism has been added at 200x (low magnification side) to prevent unintentional changes in magnification. (Effective from July 2025)

Perfect for professionals who need to pinpoint a region quickly and dive straight into precise microcirculation analysis.

GOKO's Unique Non-Reflective Observation―Stable Imaging Without Halation

GOKO's unique non-reflex cap minimizes glare and halation, while avoiding excessive pressure on the capillaries ― enabling stable and natural blood flow imaging.
This enhances the reliability of visualization and improves the accuracy of microcirculation analysis.

Using transparent film
With reflection, with contact to observation area
Using the non-reflex cap
No reflection, no-contact to observation area

Multi-Device Compatibility―Windows, iPad, Mac, and Android

Compatible with Type-C iPads

The GOKO Bscan-ZD supports UVC (USB Video Class) and can be connected to Windows PCs, iPad (Type-C models), Mac, and Android devices.
This allows real-time capillary observation and image saving without installing drivers―ideal for research, clinical settings, or mobile environments.

Note: Due to device specifications, some models may rarely be unsupported.

Instant Use with Zoom and Camera Apps―Perfect for Telemedicine and Remote Imaging

The GOKO Bscan-ZD requires no driver installation.
It works immediately with standard camera apps on Windows and macOS, and enables live image sharing via Zoom―ideal for telemedicine, remote research, and online presentations.

Real-time blood flow images shared remotely via Zoom application
Compatible with iPad (Type-C), Mac, and Android.

GOKO-VIP: The Smart Way to Quantify Blood Flow

GOKO-VIP software for the measurement of the velocity of the capillaries

Measure and record capillary blood flow as precise numerical data―instantly and effortlessly―with the software GOKO-VIP (Velocity of Images and Pixels),

Say goodbye to guesswork―GOKO-VIP turns subjective impressions like "fast" or "slow" into solid, quantifiable data.
Effortless Operation―Just 3 Easy Steps: No training needed. Just follow three simple steps to start blood flow analysis.
Created by GOKO in response to real-world researcher demands, GOKO-VIP brings advanced flow quantification to the GOKO Bscan series.

GOKO-VIP is specialized for measuring blood flow velocity. For measuring length and angles, or measuring length and angles, please use either GOKO Measure (included with the GOKO Bscan-ZD) or the optional advanced software, GOKO Measure Plus.

Learn more about GOKO-VIP

Professional Velocity Analysis Services Available

Unlock deeper insights―our experts can analyze your recorded data and deliver precise blood flow velocity results. Ideal for research, documentation, or when you need extra support.

Software Customization Available

Since GOKO develops both hardware and software in-house, we can respond flexibly to customization needs.

GOKO's Image Analysis

Built-In and Optional Software ― Tailored to Your Needs

For simple observation or basic measurements like vessel width and length, the included software is all you need―no extra cost.
But if you want to quantify blood flow or tile images for wider analysis, GOKO offers optional paid software to take your research further.

Software GOKO-VIP for the velocity measurement
Software GOKO Measure Plus for image analysis and measurement
In addition to 23 different measurement functions, it offers a wide variety of image processing such as panoramic shooting and live superposition functions.

Comparison of software functions

Functions	GOKO Measure (Free, Built-in Tool)	GOKO-VIP to measure velocity	GOKO Measure Plus for image analysis and measurement
Capture still image and video	○		○
2D measurement	○ （9 tools）		○ （23 tools）
Velocity measurement		○
Export to Excel	○	○	○
Stick-to-edge function	○		○
Advanced image processing			○ (Image tiling, Image overlay position, Auto detection, HDR composition, and more.)

Software Interface and Example:

GOKO-VIP for the velocity measurement
GOKO Measure Plus for advanced image processing / analysis

Image Tiling of Nailfold Images of (Massive zoom) — Image Tiling of Nailfold Capillaries―Even Ultra-Close Views Can Be Stitched

Trusted Worldwide―Chosen by Leading Institutions and Backed by 70 Years of Optical Expertise

GOKO, with 70 years of experience in optics

GOKO's capillaroscope series are entirely developed, designed, and manufactured in-house in Japan.
This end-to-end production allows us to take full responsibility for product quality and provide personalized after-sales service and support.

Easy to Set Up and Get Started

Ready for immediate use in both laboratories and clinical settings.

How to observe nailfold capillaries with GOKO Bscan-ZD
Connect and start observing nailfold capillaries instantly.
How to observe whole-body capillaries with GOKO Bscan-ZD
Connect and start observing capillaries across the body.

Autoclavable Model Available
―For Demanding Medical and Research Environments

Autoclavable Tip Cap―Clear Imaging Without Extra Covers

Also available: the "GOKO Bscan-ZA" , designed for demanding clinical and research environments. This model features an autoclavable tip cap that can be sterilized with high-pressure steam.

The cap does not require any disposable films or covers―allowing GOKO's unique non-reflex imaging to function at its best without obstruction. Meanwhile, the main body can still be wrapped with an echo probe cover as needed.
Made of surgical-grade stainless steel (SUS316L), the tip cap is highly resistant to heat and corrosion, ensuring safe, clear imaging in applications such as skin flap surgery, breast reconstruction, or evaluation of gingival blood flow and capillary regeneration.
The cap supports around 45 autoclave cycles and can be overhauled or replaced.

Already using the GOKO Bscan-ZD or Z?―This model can be added via body modification. Contact us to learn more.

Note: Accessories such as plastic bags, rubber bands, and gloves shown in the image are not included. Recommendations available upon request.

Find the Best GOKO Bscan Model for Your Needs

GOKO offers three models to suit different settings:

USB-connection

GOKO Bscan-ZD

Connect with a single USB cable to display and save images directly on your PC. Also compatible with iPad (Type-C models only), Mac, and Android devices.(GOKO software requires Windows 10 or higher.)

Learn more about GOKO Bscan-ZD

USB-connection（Autoclavable）

GOKO Bscan-ZA

Includes an autoclavable tip cap as a standard feature―ideal for use in medical and research settings. Easily connects via USB to your Win PC, iPad (Type-C models only), Mac, or Android device for image display and saving. (GOKO software requires Windows 10 or higher.)

Learn more about GOKO Bscan-ZA

No computer required

GOKO Bscan-Z

Displays images on a dedicated monitor―perfect for environments where a PC is not preferred, such as stores, or public events.

Learn more about GOKO Bscan-Z

Comparison Chart: GOKO Bscan Series

Model	Output	No. of pixels	Magnification (Lower/Higher)
GOKO Bscan-ZD	USB Digital	1.3M	200X, 720X
GOKO Bscan-ZA	USB Digital	1.3M	200X, 720X
GOKO Bscan-Z	NTSC Composite	0.52M	145X, 590X

We Also Customize―Even from a Single Unit

At GOKO, we welcome customization requests starting from just one unit. As a comprehensive manufacturer handling everything from development to production and and sales, we've created a wide range of custom solutions―like 1000x ultra-high magnification, scopes for long-term monitoring, and devices that display a precise 1 mm field of view across the full screen.
Tell us what you need―we're here to help.

Custom-designed capillaroscope with 1000x magnification
Capillaroscope tailored for long-term monitoring

Explore More Custom Solutions

More Microscopes

Let’s Talk — Discover What GOKO Can Do for You

Got a question or need a quote?
We're here to help.

Capillary scope (USB) GOKO Bscan-ZD

Instant Optical Zoom from 200x to 720x ― Sharper Than Autofocus Can Reach

Tongue capillaries【Wider view 〜 Massive zoom】

Experience the Next Level!