1.Improvements at the hardware level

(1) Increase the scanning speed

Frequency domain OCT (FD-OCT) : Compared with time domain OCT (TD-OCT), FD-OCT has A faster scanning speed (up to tens of thousands to hundreds of thousands of A-scans per second), significantly reducing artifacts caused by patients’ minor movements (such as eye tremors and breathing).

Swept-frequency OCT (SS-OCT) : By rapidly tuning the laser light source to achieve high-speed scanning, it further shortens the single imaging time.

(2) Eye-tracking system

Real-time active tracking: In ophthalmic OCT, infrared cameras or pupil tracking technology (such as Zeiss’s Follow-Up Mode) are integrated to dynamically adjust the scanning position to compensate for eye movement.

Adaptive scanning: Adjust the scanning path based on real-time tracking data to avoid image shift caused by sudden movement of the patient.

(3) Probe stability design

Handheld OCT: For non-cooperative patients (such as children and Parkinson’s disease patients), lightweight probes or head fixation devices (such as jaw supports) are used.

Contact OCT: In intravascular OCT (IVOCT), the movement caused by heartbeats or breathing is reduced by touching the vessel wall through a catheter.



2. Correction of software algorithms

(1) Image Registration

Feature point matching: Align B-scan images from multiple scans using stable anatomical structures in the image (such as retinal vascular bifurcations).

Registration based on mutual information: Motion compensation is achieved by maximizing the similarity index between images (such as normalized mutual information).

(2) Motion detection and rejection

Abnormal frame detection: Identify invalid frames caused by intense movement (such as signal loss and distortion) and eliminate them during reconstruction.

Dynamic weighted average: Weights are assigned to images scanned multiple times (frames with smaller motion have higher weights), and the influence of random motion is reduced after fusion.

(3) Deep learning for artifact removal

Generative Adversarial networks (Gans) : Train models to restore clear structures from motion-degraded images (such as Artifact-Net).

Time series prediction model: Utilizing networks such as LSTM to predict eye movement trajectories and correct scanning positions in advance.



3. Optimization of operation processes

(1) Patient preparation

Fixed position: During ophthalmic examinations, use a head support and a forehead support, and remind the patient to avoid speaking or swallowing.

Shorten the time of a single scan: Prioritize small-area high-definition scanning (such as 5× 5mm instead of 12× 12mm) and complete large-area imaging in different regions.

Anesthesia or sedation: In animal experiments or pediatric examinations, surface anesthesia (such as in ophthalmology) or mild sedation may be used when necessary.

(2) Scanning strategy

Repeated scanning: Collect multiple sets of data from the same area and improve the signal-to-noise ratio through software fusion.

Orthogonal scanning: Scan the same area from a vertical direction (such as horizontal + vertical) to cross-verify the influence of motion.

(3) Real-time feedback

Operator monitoring: Observe real-time images during the scanning process. If motion artifacts are detected, immediately pause and re-scan.

Patient cooperation prompt: Guide the patient to remain stable through the gaze light or voice prompt (such as “Please gaze at the green light flashing”).



4. Solutions for special scenarios

Cardiovascular OCT (IVOCT)

Trigger the scan synchronously with the electrocardiogram (ECG), avoiding the cardiac pulsation period (collection during the diastolic period).

Use rapid withdrawal catheters (such as 20 mm/s) to reduce the impact of vascular displacement.

Intraoperative OCT

Combine the navigation system (such as neurosurgical robots) to update the scanning position in real time.

Non-contact probes are adopted to avoid interference from instruments.

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1. Patients with difficulty in venipuncture

Typical population

Obese people (with thick subcutaneous fat layers and deeply hidden veins).

Infants and children (with thin blood vessels and low cooperation).

The elderly (with poor vascular elasticity and prone to rolling).

Patients who have received long-term intravenous infusion or chemotherapy (with hardened blood vessels and many scars).

Scene value

Reduce the number of repeated punctures (for example, from an average of 3 to 1) to lower the patient’s pain and the risk of complications (such as hematoma).



2. People with dark skin

Problem: Traditional visual/touch methods have difficulty locating veins in dark skin.

Technical adaptation

Choose multi-wavelength Vein Finder (for example, 850nm infrared light has better penetration).

Contrast adjustment function (such as the “Dark Skin Mode” of VeinViewer).



3. Emergency and critically ill patients

Applicable scenarios

Patients with shock/dehydration (vascular collapse).

Rescue for massive hemorrhage (rapid establishment of intravenous access is required).

Case: The emergency department uses AR projection devices (such as AccuVein) to locate the external jugular vein within 5 seconds.



4. Patients with chronic diseases and special treatment needs

Diabetes: Monitor the condition of blood vessels on the back of the hand/foot to prevent ulcers.

Hemodialysis: Protect the fistula and prevent accidental puncture.

Blood transfusion/plasma exchange: Ensure the precise establishment of high-flow pathways.



5. Areas with insufficient medical resources

Primary clinics: Making up for the lack of experience among medical staff.

Battlefield/Disaster rescue: Rapid operation under poor lighting and rudimentary equipment conditions.



6. Users outside the medical field

Veterinarian: Intravenous infusion for pets (such as the ear vein of cats and dogs).

Tattoo artist/beautician: Avoid injecting fillers into blood vessels or getting tattoos.

Medical student teaching: Vascular anatomy visualization teaching AIDS.

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Tel : +86-187 9586 9515
Email : sales@zd-med.com
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In recent years, intelligent lighting systems have transformed the way we interact with our living and working spaces. From smart homes and modern offices to smart street lighting networks, the adoption of advanced automation technologies is rapidly expanding. Traditional lighting solutions, once limited to simple on/off switches, are now being replaced by network-controlled, sensor-driven, and energy-optimized platforms. At the heart of this transformation lies a set of critical electronic components, among which the crystal oscillator plays an essential role, particularly within ultrasonic sensors.

 

The Evolution of Lighting Control

Conventional lighting systems relied solely on manual operation. With the rise of IoT-enabled devices, lighting infrastructure is moving toward automated management, allowing for real-time control, adaptive brightness adjustment, and predictive maintenance. Ultrasonic sensors are widely deployed in these intelligent lighting setups, enabling motion detection, occupancy monitoring, and environmental feedback. However, for these sensors to function accurately, a highly stable clock source is necessary — this is where crystal oscillators come into play.

 

The Role of Ultrasonic Sensors in Smart Lighting

Ultrasonic sensors operate by emitting high-frequency sound waves and measuring the reflected signals to detect movement or the presence of objects. These sensors are crucial for enabling hands-free lighting control, improving energy efficiency, and enhancing user comfort in smart homes, office environments, and large-scale outdoor lighting installations. To achieve precise time measurement and reliable distance calculations, the sensor circuitry depends on a steady timing reference, which is provided by a crystal oscillator.

 

How Crystal Oscillators Support Ultrasonic Sensor Functionality

A crystal oscillator is an electronic component that generates a consistent frequency signal based on the mechanical resonance of a quartz crystal. Within ultrasonic sensors, this signal acts as the master clock, synchronizing the timing of sound wave emission and reception. This synchronization ensures:

 

High detection accuracy: A stable oscillation frequency allows precise calculation of sound wave travel time, ensuring reliable motion sensing even in complex environments.

 

Low latency response: A high-quality oscillator minimizes delays, allowing lighting systems to react immediately to occupancy changes.

 

Interference reduction: Accurate frequency control helps ultrasonic sensors avoid false triggers caused by noise or overlapping signals from other devices.

 

Without a dependable oscillator, ultrasonic sensors may suffer from timing drift, resulting in inconsistent detection and inefficient lighting control.

 

Integration in Network-Controlled Lighting Systems

In modern lighting networks, multiple sensors and controllers communicate wirelessly or via wired connections. This requires synchronized timing signals to prevent data collisions and ensure coordinated actions across the entire system. Crystal oscillators provide the frequency stability necessary for seamless communication between ultrasonic sensors, microcontrollers, and central lighting management hubs. This synchronization is critical for enabling advanced features such as:

 

Adaptive dimming based on real-time occupancy data

 

Scheduled lighting operations with precise time stamps

 

Energy optimization algorithms for large smart building infrastructures

 

Key Benefits of Crystal Oscillators in Intelligent Lighting

Enhanced reliability: Ensures consistent sensor performance over time, even under varying temperature or environmental conditions.

 

Improved system stability: Supports reliable data transfer between sensors and controllers in a networked environment.

 

Scalability: Allows integration of multiple sensors in large-scale installations without compromising accuracy.

 

Extended lifespan: Stable oscillation reduces the risk of signal errors, lowering stress on sensor circuitry and improving durability.

 

The transition from manual switch-based lighting to intelligent, automated systems is revolutionizing residential, commercial, and urban spaces. Ultrasonic sensors are at the forefront of this shift, enabling responsive, energy-efficient, and user-friendly lighting solutions. Behind their precision lies the crystal oscillator, a small yet vital component that guarantees stable timing signals for reliable sensor operation. As smart lighting technology continues to evolve, the importance of high-quality oscillators in ensuring seamless sensor performance will only grow, making them a cornerstone of next-generation lighting control systems.

 

In today’s fast-paced dental practices, ensuring both hygiene and patient comfort is paramount. A reliable Paper Apron serves as the first line of defense against spills and splashes, keeping gowns and clothing spotless during procedures. Available in two superior materials—durable paper film and soft non-woven fabric—these aprons offer an ideal combination of protection and breathability for every patient.

Dental professionals know the importance of a well-fitting Dental Apron. Our factory-customizable sizes mean you can choose the perfect dimensions to suit pediatric, adult, or specialty cases. Whether you prefer the moisture-resistant strength of paper film or the gentle touch of non-woven fabric, our products adapt seamlessly to your clinic’s needs without compromising on safety standards.

When efficiency matters, a Disposable Apron simplifies workflow and minimizes cross-contamination risks. After a single use, you can simply discard the apron, reducing laundering costs and freeing up your team to focus on patient care. Plus, our eco-friendly materials ensure responsible disposal without harming the environment.

By integrating our custom-sized, high-quality aprons into your practice, you demonstrate a commitment to both professionalism and patient well-being. Every aspect—from material selection to packaging—has been optimized for ease of use, so you can maintain a smooth, hygienic operation from check-in to check-out.

At Paper Apron, we pride ourselves not only on delivering top-tier Paper Apron products but also on the exceptional service ethos to Telijie. Our dedicated team offers personalized support, rapid turnaround on custom orders, and comprehensive after-sales care to ensure your clinic never runs low on essential supplies. Choose Telijie for a partnership that elevates your practice’s safety, efficiency, and reputation.

When it comes to maintaining the highest standards of hygiene and comfort in your spa or wellness center, choosing the right supplies makes all the difference. SPA Disposable nonwoven rolls offer a soft, durable barrier that keeps your massage tables and treatment beds impeccably clean between clients. Designed for spas, salons, and medical practices, these rolls ensure your space looks professional and inviting without the hassle of laundering fabric sheets.

Beyond their hygienic appeal, SPA Disposable nonwoven rolls excel in comfort and strength. Unlike traditional paper rolls that can tear or wrinkle, our massage bed paper roll is crafted from premium nonwoven fibers, providing a smooth, tear-resistant surface that won’t bunch up during treatments. Clients appreciate the gentle feel against their skin, while therapists enjoy the ease of unrolling and tearing off perfectly straight sheets—every time.

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At Telijie, we understand that exceptional products deserve exceptional service. As the leading provider of SPA Disposable nonwoven rolls, we not only guarantee top-quality materials but also a streamlined ordering process, fast delivery, and responsive customer support. Our commitment to your satisfaction means you can focus on delivering outstanding care to your clients while we handle the rest.

Bladder cancer is one of the most common malignancies of the urinary system. Radical cystectomy remains the golden standard for treating muscle-invasive bladder cancer, yet it is considered one of the most complex and demanding procedures in urologic surgery. The main challenges include intricate pelvic anatomy, dense distribution of vital vessels and nerves, high risk of bleeding or rectal injury, extensive surgical scope requiring en bloc removal of the bladder and prostate, iliac lymphadenectomy, and complex urinary diversion with significant postoperative complications--all of which severely impact surgical outcomes and patient recovery.  

 

With the advancement of minimally invasive techniques such as laparoscopy and cystoscopy, these challenges are gradually being overcome. Leading experts like Professor Zhang Zheng’s team at Peking University First Hospital have demonstrated mature surgical capabilities. During radical cystectomy, Prof. Zhang frequency employs the AGISEAL SL0844 instrument to efficiency and safely manage lateral bladder pedicles and pelvic lymph mode dissection. AGISEAL enables direct coagulation of deep vascular networks--including the dorsal vein complex--avoiding the limited visibility and complexity associated with traditional suturing. This reduces the need for perioperative transfusions and minimizes secondary pelvic bleeding. Additionally, AGISEAL enables rapid and effective handling of obturator vessels, significantly improving surgical efficiency and reducing operative time. With no foreign material left behind, it supports better postoperative recovery and demonstrates strong clinical performance. As a result, AGISEAL has become a preferred energy device in complex urologic procedures. 

 

Proven across multiple cases, AGISEAL is well-suited for the demands of urologic surgery and serves as a reliable tool in high-difficulty radical cystectomy for bladder cancer. 

With the increasing prevalence of early thyroid disease screening, the diagnosis and surgical rates of thyroid conditions are on the rise. For malignant tumors and large benign nodules that impair swallowing or breathing, unilateral or bilateral lobectomy remains the standard treatment^[1]. High-quality surgical instruments not only improve efficiency but also reduce complications.

 

In most Chinese hospitals, ultrasonic scalpels are commonly used in thyroid surgery. These devices utilize high-frequency vibrations to break protein bonds, enabling simultaneous tissue dissection and vessel sealing. Ultrasonic scalpels are flexible and can replace multiple traditional instruments—including electrocautery, scissors, vascular clamps, ligatures, and sutures—thereby shortening operative time and minimizing blood loss. Furthermore, they do not cause neuromuscular electrical stimulation. However, potential risks exist: the relatively bulky “scissor-style” blade of the ultrasonic scalpel may conduct excessive heat near delicate structures, such as the recurrent laryngeal nerve, increasing the risk of thermal injury and even permanent paralysis^[2].

 

Bipolar coagulation systems, originally used in neurosurgery, have shown excellent hemostatic precision in small vessels and are increasingly favored by thyroid surgeons ^[3]. ShouLiang-med’s bipolar forceps feature mirror-polished tips for superior conductivity, thermal efficiency, and anti-stick performance. Tip widths range from 0.25 mm to 2 mm, making them suitable for a wide range of procedures. In thyroid surgery, they allow for fine dissection near the recurrent laryngeal nerve and precise control of minor bleeding around nerve structures, with minimal thermal spread to adjacent tissues.

 

Preserving the parathyroid glands and their blood supply is another key challenge. Studies have shown a significantly lower incidence of postoperative hypocalcemia in patients treated with bipolar forceps compared to those treated with ultrasonic scalpels ^[4], likely due to the reduced collateral thermal damage and better vascular control. Moreover, postoperative drainage volumes were also lower in the bipolar group, possibly due to: (1) more precise coagulation of microvasculature, and (2) lower thermal tissue exudation compared to ultrasonic devices.

 

In conclusion, bipolar forceps offer a cost-effective solution with fine tips and limited thermal spread, significantly reducing the risk of injury to the recurrent laryngeal nerve and parathyroid glands. They present a viable alternative to ultrasonic scalpels in open thyroidectomy^[4].

 

 

References

[1] Thompson NW, Olsen WR, Hoffman GL. The continuing development of the technique of thyroidectomy [J]. Surgery, 1973, 73(6):913-927.

[2] Materazzi G, Caravaglios G, Matteucci V, et al． The impact of the

Harmonic FOCUSTM on complications in thyroid surgery: aprospective multicenter study[J]. Updates Surg, 2013, 65 (4): 295-299．

[3] Pniak T, Formánek M,Matousek P,et al. Bipolar thermofusion BiClamp 150 in thyroidectomy: a review of 1156 operations [J].Biomed Res Int, 2014, 2014: 707265．

[4]Ding S. Comparison of bipolar coagulation forceps and ultrasonic scalpel in thyroidectomy. Advances in Modern General Surgery of China, 2022; 25(08): 639–640+643.

Uterine fibroids are benign tumors arising from the proliferation of smooth muscle cells in the uterus, affecting approximately 30% of women of reproductive age, with a malignancy rate of 0.4%–0.8%. Surgery remains the primary treatment, and advances in medical technology have enabled laparoscopic techniques to make significant strides in gynecology. Laparoscopic myomectomy is widely adopted due to its minimally invasive nature, reduced pain, and overall safety. However, intraoperative hemostasis of the fibroid bed remains a clinical challenge.

 

In a study published in Practical Journal of Integrated Chinese and Western Medicine, Li Kehong et al. compared the clinical performance of ultrasonic scalpels, monopolar electrosurgical devices, and cold knives in 92 laparoscopic myomectomy cases. Patients were divided into three groups: ultrasonic scalpel (32 cases), monopolar electrosurgery (32 cases), and cold knife (28 cases).

 

Results showed that both the ultrasonic scalpel and monopolar electrosurgery groups outperformed the cold knife group in terms of operative time, intraoperative blood loss, and uterine suturing time. Specifically, the monopolar group achieved a significantly shorter operative time (64.6±10.3 minutes vs. 81.7±11.6 minutes), reduced blood loss (103.3±11.5 ml vs.146.6±13.2 ml), and faster suturing (19.4±4.1 minutes vs. 24.3±3.2 minutes). Postoperative recovery was also improved, with earlier mobilization (12.4±4.2 hours) and shorter hospital stays (3.7±0.6 days). The study highlighted the strong performance of monopolar electrosurgery in enhancing surgical efficiency and postoperative recovery, noting its ease of use and cost-effectiveness as key advantages in laparoscopic myomectomy.

 

ShouLiang-med is committed to independent innovation, providing comprehensive energy-based surgical solutions. Our High Frequency Generator support multiple cutting and coagulation modes, meeting the full demands of laparoscopic myomectomy while reducing surgical time and blood loss. Our accompanying range of monopolar instruments—available in various specifications—are engineered for complex laparoscopic procedures. With premium materials, excellent anti-adhesion properties, and precise cutting and coagulation performance, our products have earned widespread clinical recognition.

 

We aim to continue delivering safe and effective solutions to patients worldwide and empowering healthcare providers with more efficient treatment tools.

I. Core Technical Principles

Near-infrared imaging (NIR Technology)

The absorption characteristics of hemoglobin: Deoxyhemoglobin in veins has a higher absorption rate for near-infrared light of specific wavelengths (typically 700-900nm) than that in surrounding tissues.

Reflection difference imaging: The device emits near-infrared light onto the skin, and the camera captures the reflection signal. Through algorithms, the veins are contrasted and enhanced with the surrounding tissues to form a clear image.

Multispectral imaging (optional technology)

Some high-end devices combine visible light and near-infrared light and adapt to different skin tones (such as patients with dark skin) through multispectral analysis.

AI image processing

Edge enhancement algorithm: Highlighting vein contours and reducing noise interference.

Depth prediction: Estimate the depth of veins through reflection intensity to assist in locating deep veins.



Ii. Enhanced Features of Desktop Design

Stable projection system

Fixed projector: Avoid the shaking of  handheld devices Vein Finder and precisely project vein images onto the skin surface (such as green/red contours).

Adjustable stand: Freely adjust the height and Angle to fit different parts such as the arm, back of the hand, and foot.

High-precision camera

Equipped with high-resolution sensors, it captures subtle vascular signals in real time and, in combination with the optical zoom function, magnifies local areas.

Environmental adaptability

Automatic calibration: Dynamically optimize imaging parameters based on ambient light and skin color.

Anti-interference design: Reduce the influence of surgical lamps or other light sources on imaging.



Iii. Work Process (Taking Blood Drawing as an Example)

Step 1: Patient localization

The patient placed his arm flat under the device and kept it stable.

Step 2: Quick scan

The device emits near-infrared light, generating a vein distribution map within 1-2 seconds and projecting it in real time.

Step 3: Vascular selection

Medical staff select the best puncture site (such as thick, straight, and unbifurcated veins) through screen or projection markers.

Step 4: Precise puncture

Puncture is completed under the guidance of venous projection, reducing the number of blind explorations.

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Tel : +86-187 9586 9515
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In modern healthcare environments, maintaining impeccable hand hygiene is paramount. That’s why our Medical Hand Paper brings together superior functionality and eco-friendly design, ensuring medical professionals can focus on patient care without compromise. Crafted from pure wood pulp paper reinforced with a discreet scrim grid, this innovative material offers both strength and sustainability—qualities no clinic should be without.

Each sheet of our Medical Hand Paper delivers exceptional absorbency, handling oil and water spills with ease. Unlike ordinary tissues, the advanced composition of our Surgical Hand Paper ensures it remains intact even when wet, providing reliable performance during critical procedures. This scrim reinforcement not only enhances tear resistance but also maintains a lint-free surface, reducing the risk of contamination in sterile settings.

Beyond the operating room, our Scrim Reinforced Hand Paper proves indispensable across a range of medical applications. From emergency wards to outpatient clinics, its eco‑friendly, biodegradable nature aligns with hospital sustainability goals while its robust durability meets rigorous daily demands. Healthcare teams appreciate how quickly it soaks up fluids without shredding, making restocking hassle‑free and cost‑effective.