The first step: Demarcate the boundaries of the “safe” and the environment (regional boundary security)
OCT devices

should not be directly exposed to public networks. First, it is necessary to plan the security domain.

1. Network partition isolation
   
   Medical equipment dedicated network: OCT devices, PACS servers, image storage servers, etc. are classified into an independent VLAN and logically isolated from the office network and the Internet.
   
   Firewall policy: Deploy firewalls at the network boundary and strictly follow the “principle of least privilege”. Only specific and necessary ports and IP addresses are allowed for communication (for example, port 104 of the DICOM protocol, a specific port of the hospital information system). Any illegal external access is prohibited.
   
2. Physical Access Control
   
   The computer room where OCT equipment and core servers are placed should implement strict physical access control and video surveillance management to prevent unauthorized physical contact.
   
   Step 2: Build a sturdy box for the "safe" (secure computing environment)
   This is the core layer that protects the data itself.
   OCT Equipment and Terminal Security:
   Strengthen the operating system: Enhance the security of the operating system of the industrial control computer or computer built into the OCT device, as well as that of the diagnostic workstation.
   Anti-virus software: Install hospital-specific anti-virus software and update the virus database regularly.
   Identity authentication: It is mandatory to log in to the system with a unique personal username and a strong password. For the third-level information security protection, two-factor authentication should be mandatory.
   
3. Data storage encryption (lock of the safe) :
   
   Static data encryption: All OCT image data must be encrypted when stored on the disk. Available options:
   
   Transparent database encryption: Encrypting sensitive fields in the database.
   
   Storage layer encryption: Encrypt the entire disk or volume using the built-in encryption function of the storage device or operating system-level encryption.
   
   File-level encryption: Encrypting a single DICOM file.
   
   Key management: Encryption keys must be uniformly managed by a professional key management system, stored separately from encrypted data, and rotated regularly. This is the key point of the requirements for the equal protection.
   
4. Application Security
   
   Ensure that the PACS software and OCT device software themselves have no known high-risk vulnerabilities, and conduct regular security assessments.
   
   Step 3: Ensure "safety during transportation" (communication network security)
   When data is transmitted between OCT devices, PACS servers and diagnostic workstations, it is necessary to prevent eavesdropping and tampering.
   
5. Transmission encryption
   
   Enforce the use of encryption protocols such as DICOM over TLS or DICOM over HTTPS to replace the traditional plaintext DICOM protocol. This ensures that data is encrypted when transmitted over the network, similar to HTTPS protecting web page communication.
   
   For scenarios such as remote consultation that require cross-internet transmission, a VPN encrypted tunnel must be established.
   
   Step 4: Establish a monitoring and management center for the "safe deposit box" (Safety Management center)
   This is the brain and nerve center of the "safe", responsible for monitoring, auditing and emergency response.
   
6. Log audit (recording who opened the box) :
   
   Collect all logs related to OCT data centrally, including: user login/logout logs, logs of OCT image creation, modification, deletion, access, printing, export and other operations. These logs must be retained for no less than six months.
   
   The information security protection level requires that the content of logs cannot be tampered with, so it is necessary to deploy a professional log auditing system.
   
7. Database Audit
   
   For operations that directly access the database, a database auditing system is deployed to record all access behaviors to OCT data tables, especially high-risk operations.
   
8. Operation and Maintenance Management and Security Audit
   
   Video the operations of system administrators and record instructions to achieve traceability.
   
   Regularly conduct security risk assessments and vulnerability scans.
   
9. Data Backup and Recovery (Spare key for the safe) :
   
   Formulate a complete data backup strategy and regularly back up OCT image data and related patient information.
   
   Regularly conduct disaster recovery drills to ensure that business and data can be quickly restored in the event of data loss, system downtime or ransomware attacks. Backup data also needs to be encrypted for protection.
   

   
   

   
   

   Also welcome to contact us, we are ZD Medical Inc.
   Tel : +86-187 9586 9515
   Email : sales@zd-med.com
   Whatsapp/Mobile : +86-187 9586 9515

The International Day of the Blind on October 15th every year is a day that calls for attention to eye health and conveys the hope of light. When we focus on the living predicaments of the visually impaired group, a set of data should prompt more deep thought…

The silent threat of blindness: The insidious nature of retinal diseases

Retinal diseases such as diabetic retinopathy (DR) and age-related macular degeneration (AMD) have become the leading causes of irreversible blindness in China, and most patients have missed the best intervention opportunity by the time they show obvious symptoms. According to statistics, over 250 million people worldwide suffer from vision impairment, and nearly half of them can avoid it through early intervention. However, the limitations of traditional examination methods have caused many patients to miss the best treatment opportunity. In this race against darkness, ZD Medical  precise diagnosis and treatment solutions centered on optical coherence tomography (OCT) scanners are becoming a key force in preventing blindness.

Zhiding OCT: Solving the Problem of Early Diagnosis with "Microscopic Insight"

The fundus, as the core hub for visual signal transmission, often serves as an "early warning" for blindness due to its microscopic lesions. Traditional examination methods are difficult to capture the subtle changes between retinal layers. However, OCT technology has achieved a breakthrough by virtue of its unique advantage of "optical biopsy" - through the principle of weak coherent light interference, it can reconstruct two-dimensional and three-dimensional images of the fundus with millimeter-level depth and micrometer-level resolution Clearly present key lesion markers such as intraretinal effusion (IRF) and subretinal effusion (SRF).

The core technology adopted by ZD Medical OCT can complete a full retinal scan within 3 seconds, and the image resolution is 40% higher than that of traditional equipment. Even the tiny protrusions in the retinal pigment epithelial layer of early-stage AMD patients can be accurately captured. The built-in AI+ remote film reading function of the device, along with online review by retinal disease experts, covers all ophthalmic diseases. This effectively empowers primary medical institutions, breaks through the limitations of time, space and resources, standardizes diagnostic results, reduces the occurrence of missed and misdiagnoses, and minimizes clinical risks to the greatest extent. As emphasized in the "2025 Expert Consensus on OCT in the Fundus of China", OCT's ability to identify early lesions far exceeds that of traditional color fundus photography, and the positive screening rate is significantly higher, thus buying precious time for preventing blindness.

Technology for Good: From Diagnostic Devices to the Construction of a Blindness Prevention Ecosystem

The mission of ZD Medical is not only to provide hardware equipment, but also to build an integrated blindness prevention system of "prevention - diagnosis - management". We have collaborated with multiple hospitals to carry out the "Grassroots Retinal Disease Screening Program", using OCT equipment to reach communities and rural areas, enabling patients in remote regions to also enjoy precise diagnostic services. Meanwhile, the remote film reading function of the software platform has broken through geographical restrictions, enabling high-quality medical resources to flow efficiently.


Take responsibility as the tripod: Build the line of defense of light into every inch of land

The significance of the International Day of the Blind lies not only in caring for those who have lost their sight, but also in safeguarding the visual health that still exists. "Leading with technology and safeguarding light", the value of OCT has never been limited to precise imaging; rather, it lies in making the concept of "early detection and early intervention" for blindness prevention take root through the popularization of technology. On this International Day of the Blind, we firmly believe that when every ZD Medical OCT device starts to operate, it is blocking the darkness for a family. When every precise report is generated, it is lighting up hope for patients! The protection of light is never an accidental stroke of luck, but an answer jointly written by technology and responsibility. Zhiding Medical will continue to take technological innovation as its pen and clinical needs as its ink, and forge ahead firmly on the path of preventing blindness.

Also welcome to contact us, we are ZD Medical Inc.
Tel : +86-187 9586 9515
Email : sales@zd-med.com
Whatsapp/Mobile : +86-187 9586 9515

I. Patient Comfort Experience

Comfort focuses on positive physical and psychological feelings, emphasizing “painless” and “relaxed”.

1- Contactless and pressure-free scanning process:

Experience: The device scans just a few centimeters above the skin without touching the body at all. Compared with the tight feeling of traditional tourniquets and the pressure sensation when nurses touch and search for blood vessels, this is a zero-invasive and zero-discomfort experience.

Value: Especially suitable for patients with sensitive skin, burns or trauma, it avoids the pain that may be caused by contact.

2- Painless and non-invasive imaging technology:

Experience: Vein Finder typically uses safe near-infrared light. The patient cannot see this kind of light and does not feel any stimulation at all, just like being illuminated by an ordinary flashlight. However, they can see the vascular images magically projected onto their skin.

Value: It eliminates the fear of technologies such as “radiation” and “laser”, and the process is very gentle.

3- Distract attention and relieve anxiety

Experience: For children and patients who are afraid of needles, seeing a clear image of the blood vessels on their arm is like an interesting “magic trick” or video game, which can effectively divert their attention from the upcoming puncture.

Value: Transforming a terrifying experience into a novel technological interaction significantly reduces psychological tension.

4- Shortened the anxiety time in the preparation stage:

Experience: Nurses no longer need to repeatedly touch and pat their arms for a long time to search for blood vessels. The “instant positioning” reduces the patient’s torment while waiting for puncture.

Value: The process is smooth and rapid, avoiding the prolonged anxiety caused by uncertainty.



Ii. Establishment of Patients’ sense of security

Security stems from a sense of “controllability” and “trust” in the process, emphasizing “reliability” and “peace of mind”.

1- The sense of control brought by visualization:

Experience: Patients can see the distribution of their subcutaneous blood vessels with their own eyes and understand the reasons why nurses choose puncture points. This “information transparency” endows patients with an unprecedented sense of participation and control.

Value: Transforming from a passive recipient to an active participant has greatly enhanced psychological security. “I can see it, so I’m relieved.” “

2- Expectations for high success rates:

Experience: The patient understands that the purpose of using high-tech equipment is to “hit the nail on the head”. This clear “expectation of success” directly offsets the fear of “repeated puncture failures”.

Value: Establishing a powerful psychological suggestion that “this operation will go smoothly” is the cornerstone of a sense of security.

3- Transfer of trust in the skills of medical staff:

Experience: Vein Finder is regarded as an authoritative auxiliary tool. The patient would think: “The hospital has introduced such advanced equipment, which shows that they attach great importance to and are committed to reducing my pain.”

Value: The equipment enhances patients’ trust in the professionalism of the entire medical team, and this sense of trust will translate into a sense of security.

4- Deep Reassurance for Special Groups

For parents of children: Seeing medical staff operate on their children in such a gentle and precise way brings great comfort.

For long-term patients (such as those undergoing chemotherapy) : Their blood vessels are fragile and in need of protection. Vein Finder can help select the best blood vessels and avoid damage. This “blood vessel protection” itself is a deep-seated commitment to safety.

Also welcome to contact us, we are ZD Medical Inc.
Tel : +86-187 9586 9515
Email : sales@zd-med.com
Whatsapp/Mobile : +86-187 9586 9515

I. Core Technological advantages: More efficient therapeutic effects

Ultrafine atomization for more efficient absorption:

Advantages: It breaks down the liquid medicine or artificial tears into extremely fine mist-like particles (usually with diameters ranging from 1 to 5 micrometers), which are much smaller than those of traditional eye drops. This enables the drug to cover the entire ocular surface more evenly and thoroughly, including the hard-to-reach meibomian gland openings and conjunctival fornix, significantly increasing the effective absorption area and bioavailability.

2. Deep nourishment, directly reaching the lesion

Advantages: The gentle and continuous mist can penetrate to the edge of the eyelid and directly act on the blocked meibomian glands, helping to soften blebum and improve the fundamental problem of “evaporative dry eye”. This is something that cannot be achieved simply by using eye drops.



Ii. User Experience Advantages: More comfortable and safe

1. Contactless treatment to avoid secondary injury:
   
   Advantage: During the treatment process, the eyeball does not need to come into contact with any instruments, greatly reducing the risk of infection that may result from contact (especially for patients with corneal damage or those who have undergone eye surgery). It also avoids the possible contamination of the medicine bottle mouth.
   
2. Gentle and comfortable, with an excellent experience:
   
   Advantages: Compared with the sudden impact and possible stinging sensation when the liquid drops in, nebulization therapy is a gentle, warm and continuous process. Users can receive treatment with their eyes naturally open or slightly closed in a relaxed state, without any foreign body sensation. It is especially suitable for children, the elderly or patients who are afraid of using eye drops.
   
3. Maintain the physiological state of the eyes without interfering with the tear film
   
   Advantage: Traditional eye drops wash away the normal tear film when applied, which may cause temporary blurred vision. Nebulization therapy is carried out in the form of “supplementation” and “moisturization”, without damaging the original structure of the tear film, and the visual quality is more stable after treatment.
   
   Iii. Functional and Scenario Advantages: More convenient and multi-functional
   
4. Multi-functional in one device, capable of both treatment and relief
   
   Advantages: In addition to using the special liquid prescribed by the doctor for treatment, users can also use sterile normal saline or special artificial tears for nebulization in daily life as a health care method for daily eye moisturization and relieving eye fatigue. It has achieved full coverage from “treatment” to “care”.
   
5. Family-oriented and portable, enhancing treatment compliance
   

   Advantage: With the popularization of portable home nebulizers, patients can bring professional-level care home. There is no need to frequently visit the hospital, which greatly facilitates patients with chronic dry eye syndrome who require long-term management, significantly improves treatment compliance, and thus ensures long-term therapeutic effects.

   
   

   Also welcome to contact us, we are ZD Medical Inc.
   Tel : +86-187 9586 9515
   Email : sales@zd-med.com
   Whatsapp/Mobile : +86-187 9586 9515

   
   

The traditional electrocautery hook is a commonly used instrument in surgical procedures. However, it often produces a large amount of surgical smoke and some bleeding during use, requiring coordination with a separate suction–irrigation device. The frequent switching and coordination between instruments can reduce surgical efficiency. The newly developed suction-irrigation electrosurgical cutter, with its integrated functions and scenario-oriented design, has become a powerful alternative to the conventional electrocautery hook.

 

Developed independently by ShouLiang-med, the Disposable Suction Irrigation Instrument integrates electrocoagulation, electrocision, irrigation, and suction into one device. It allows precise coagulation of small vessels to seal and control bleeding, while its diverse electrode shapes enable delicate tissue dissection, traction, and anatomical separation. The built-in channel system can deliver saline or other irrigation fluids to the surgical field, keeping tissues moist, cooling them down, and improving visibility. It can also suction fluids, smoke, and tissue debris from the field to maintain a clear view. By using this single instrument, the need for frequent instrument changes is greatly reduced, achieving an operational loop of “irrigate as you point, coagulate as you clean, and suction as you coagulate.” This provides surgeons with a more convenient and effective tool for many typical clinical scenarios.

 

 

For example, in laparoscopic cholecystectomy (LC), dissection of Calot’s triangle is a key and challenging step. When separating the gallbladder from the liver, surgeons need to delicately dissect adhesions and fatty tissue around the cystic duct and cystic artery using an electrocautery hook. The gallbladder bed often presents diffuse oozing. At this stage, the EA31303 hook-type instrument enables precise dissection and cutting, clear exposure of ductal structures, and effective coagulation of small vessels to control bleeding while maintaining a clean dissection plane. With its integrated suction and irrigation functions, the surgeon can instantly activate irrigation or suction via hand control without switching instruments. This quickly restores a clear view and enhances the safety of bile duct identification.

 

Therefore, the suction-irrigation electrosurgical cutter is especially suitable for minimally invasive surgeries involving complex anatomy, limited operating space, frequent bleeding, and high demands for visual clarity. The ShouLiang-med Disposable Suction Irrigation Instrument series, through its ingenious functional integration, effectively addresses key pain points in minimally invasive surgery. It serves as a powerful tool to improve both surgical efficiency and safety, providing a more convenient and comprehensive solution for these demanding surgical environments.

Electrosurgical units (ESUs), commonly known as electrosurgical equipment, are widely used in surgical procedures. By generating heat through high-frequency electric current, they enable precise tissue cutting and effective hemostasis. Due to their ease of use, rapid cutting, and reliable bleeding control, ESUs have become indispensable tools in operating rooms, particularly in general surgery, gynecology, and colorectal surgery ^[1]. With the advancement of medical technology, the performance of electrosurgical units continues to improve, significantly enhancing both safety and efficiency, and supporting minimally invasive surgery and faster postoperative recovery.

 

Compared with traditional scalpels, electrosurgical units can effectively reduce intraoperative blood loss, shorten surgery duration, and lower the risk of postoperative complications. Studies have shown that proper use of ESUs can significantly improve surgical outcomes. In one study involving 160 surgical patients, the observation group receiving care with standardized electrosurgical unit procedures had an average surgery time of 132.9 minutes, intraoperative blood loss of 43.7 mL, and nursing satisfaction of 95.1%, all of which were superior to the conventional care group (P<0.05) ^[2]. This indicates that scientific usage and comprehensive nursing support are key to maximizing the advantages of electrosurgical units.

 

Safe use of electrosurgical units relies heavily on standardized nursing coordination. Nursing staff should check equipment status, electrode placement, and power connections before surgery to ensure a safe operating environment; during surgery, they must closely monitor the patient’s vital signs and equipment performance, addressing any anomalies promptly ^[3]. For example, selecting the appropriate output power, preventing patient contact with metal surfaces, and using insulation protection can effectively prevent burns and other accidents, ensuring smooth surgical procedures.

 

 

The SEH80A electrosurgical unit from ShouLiang-med integrates multiple intelligent technologies to further enhance surgical safety and efficiency. The device offers 8 monopolar and 6 bipolar modes to meet various surgical needs; its intelligent tissue-sensing function can adjust output power in real time, reducing smoke and eschar formation; and the return electrode monitoring system ensures patient safety from multiple dimensions. Additionally, the SEH80A supports laparoscopic interfaces, is compatible with smoke evacuators, and integrates into modern operating rooms, making it suitable for a variety of complex surgical scenarios and reflecting the efficiency and flexibility of modern surgical equipment.

 

In summary, electrosurgical units play a crucial role in modern surgery due to their significant intraoperative advantages and integration with proper nursing care. The application of advanced devices like the SEH80A from Shouliang-med has significantly improved surgical precision and safety, effectively promoting minimally invasive surgery and faster patient recovery.

 

 

References:

[1] Yan Weidong, Fan Li, Chen Hua, et al. Analysis of Nursing Coordination for the Safe Use of Electrosurgical Units in the Operating Room [J]. Medical Frontiers, 2016, 6(31): 286-287.

[2] Xiao Yingmei. Application Effect of Nursing Coordination for Safe Use of Electrosurgical Units in Surgery [J]. Medical Equipment, 2021, 34(4): 130-132.

[3] Long Yanli, Du Lin. Nursing Coordination for Safe Use of Electrosurgical Units in the Operating Room [J]. Medical Equipment, 2019, 32(10): 146-147.

With the evolution of modern surgical treatment concepts, the number of OR medical devices continues to increase. The function and performance of these devices directly impact surgeons' operational proficiency and condition, ultimately affecting surgical outcomes. Therefore, ensuring optimal device performance during use is crucial. Here, we outline key maintenance and servicing points for the ShouLiang-med advanced electrosurgical vessel sealer dividers system SL100M.

 

 

How to Properly Install and Maintain the SL100M?

 

Installation:

 

• First, inspect the high-frequency surgical generator and accessories to ensure they are complete and undamaged. Do not use any damaged devices.

 

• Secure the high-frequency surgical equipment to a stable surface, such as a table, platform, or cart.

 

• When placing the unit, ensure at least 10 cm to 15 cm of clearance is maintained above, on the sides, and behind the unit to facilitate cooling. 

 

• Connect one end of the power line to the power socket on the rear panel of the generator, and plug the other end into a grounded power outlet. Connect the foot switch connector to the foot switch socket on the rear panel of the generator. Connect the instrument plug to the instrument socket on the front panel of the generator. 

 

• Press the power switch to turn on the generator. The green light will illuminate. Verify the following: the company logo appears on the screen, The power-on self-test process emits an audible sound.  

 

• If the self-test is successful, the main interface will be displayed, and the generator is ready for normal use.

 

• If the self-test fails, the display will show the corresponding fault code. Please refer to the "Common Faults and Troubleshooting" section of the manual or contact an engineer.

 

Cleaning and Disinfection:

 

• Thoroughly scrub all surfaces of the generator, power cord, and foot switch with a mild detergent or disinfectant solution and a soft damp cloth.The device can withstand frequent cleaning without degradation of the housing or display quality.

 

• Warning: Risk of electric shock. Before cleaning, turn off the power supply and unplug the generator to ensure the device is isolated from the main power source.

 

• Note: Do not use abrasive cleaning or disinfectant solutions (such as formalin), solvents, or other materials that may scratch the panel or damage the device.

 

• Note: The instrument is not completely sealed. Liquids must not seep into the unit. Do not place liquid containers on the generator, and avoid spraying cleaning solutions directly onto it, as this may damage it.

 

Servicing

 

• It is recommended that a comprehensive inspection of the generator and all accessories be conducted annually by qualified full-time personnel. Adjust the system according to technical requirements to ensure it remains in optimal condition.

 

• It is recommended to inspect the power cord before each use of the system, or at intervals recommended by your hospital. Check the power cord for exposed wires, cracked outer casing, frayed edges, or damaged plugs. Replace any damaged cords. 

 

• Malfunction of internal components may cause the fuse to blow. If the wall outlet has power but the generator fails to complete the power-on self-test or stops working, replace the fuse of the device.

 

• During maintenance, surface dirt such as dust and oil stains can be cleaned using the traditional method of wiping with a dry cloth.

 

• Avoid severe vibrations, exposure to harmful gases, and liquid ingress.

 

• Keep the surfaces clean. Refer to the cleaning methods described above.