Deep Vein Thrombosis (DVT) Prevention and Treatment Product(QJ-B100)

Technical Specifications

1. Screen and Operation

   • 5-inch capacitive touchscreen

   • Based on the T5L1 chip

   • DGUS II operating system

   • Resolution: 480 × 854

   • 16.7 million colors

2. Treatment Modes

   • Manual Treatment

   • Standard Treatment

3. Treatment Pressure

   • Maximum treatment pressure: 300 mmHg

   • Minimum treatment pressure: 0 mmHg

   • Pressure adjustment accuracy: 1 mmHg

   • Relevant parameter documentation shall be provided as required by the applicable national regulatory authority.

4. Treatment Functions

   • Supports both plantar foot pressure cuffs and calf pressure cuffs for treatment.

5. Device Indication Functions

   • During operation, the screen displays treatment time and pressure.

   • The deviation between the displayed pressure and the actual measured pressure shall not exceed ±5 mmHg.

   • Overpressure warning

   • Underpressure warning

   • Fault warning

   • Dynamic treatment-site indication: the treatment site currently being treated flashes on the screen.

6. Overpressure Protection

   • The device incorporates dual overpressure protection through both software and hardware safeguards.

   • In the event of overpressure, the device provides an overpressure warning and automatically releases the air pressure inside the chambers.

   • Under a single-fault condition, the system is designed to release the maximum pressure in the chambers and connecting tubing.

   • The pressure delivered to the limb shall not exceed 120% of the maximum treatment pressure for more than 1 second.

   • Relevant parameter documentation shall be provided as required by the applicable national regulatory authority.

7. Function Control

   • The device is equipped with an output stop switch, allowing the treatment procedure to be interrupted at any time.

8. Fault Self-Inspection

   • The device is equipped with a fault self-inspection function.

9. Pulse Width and Refill Time

   • Adjustable pulse width: Levels 1–5

   • Adjustable refill time: 20–70 seconds

10. Pressure Release Measures

The device provides pressure-release measures under the following conditions:

a. Manual pressure release:
The patient pressure can be manually released under various operating conditions. Disconnecting the ventilation tubing is sufficient to release the pressure.

b. Completion of treatment:
Automatic pressure release occurs when the preset treatment time is reached and the treatment program is completed.

c. Power interruption:
Automatic pressure release occurs in the event of sudden loss of power.

d. Device fault:
Automatic pressure release occurs when a fault is detected and a fault warning is triggered.

e. Temporary treatment interruption:
Automatic pressure release occurs when the treatment program is temporarily interrupted.

In all of the above situations, pressure release shall be completed with a single action. The time required for the patient pressure to decrease from the maximum pressure to 2 kPa shall not exceed 10 seconds.

11. Installation and Mounting

• Suitable for bedside use.

• Can also be mounted on a dedicated medical trolley.

12. Safety and Pressure Resistance

• The chambers and connecting tubing shall withstand a pressure of 450 mmHg for 1 minute without rupture or permanent (plastic) deformation.

• Connections shall remain secure without loosening or visible deformation.

• The chambers and connecting tubing shall withstand sudden external forces without localized bulging or rupture.