Disposable Integrated Pressure Transducer Regular type DPT Core Part
PRODUCT INTRODUCTION
1. Core application: Accurate monitoring of physiological pressure within the body
Disposable invasive pressure sensors are connected directly to human blood vessels, cavities, or organs via catheters, converting mechanical pressure signals into electrical signals, which are then displayed in real time on a monitor, providing a basis for clinical diagnosis, treatment evaluation, and risk warning.
2. Specific Application Scenarios
Cardiovascular System Monitoring:
(1)Arterial Blood Pressure Monitoring
This is the most common application scenario. By inserting a catheter into locations such as the radial artery, femoral artery, or brachial artery and connecting it to a sensor, invasive arterial blood pressure (IBP) can be monitored in real time, including systolic pressure, diastolic pressure, and mean arterial pressure (MAP). Compared to non-invasive blood pressure (e.g., electronic blood pressure monitors), its advantages include:
More accurate and continuous data, unaffected by cuff tightness or limb movement;
Ability to capture transient blood pressure fluctuations (e.g., during shock or arrhythmia), providing immediate guidance for fluid resuscitation and vasoactive drug adjustments in critically ill patients (e.g., ICU or operating room patients).
(2)Central venous pressure (CVP) monitoring
By inserting a central venous catheter into the internal jugular vein, subclavian vein, etc., the pressure in the right atrium or the superior and inferior vena cava near the right atrium is monitored, reflecting circulating blood volume and cardiac function status. It is commonly used for:
(2)Central venous pressure (CVP) monitoring
By inserting a central venous catheter into the internal jugular vein, subclavian vein, etc., the pressure in the right atrium or the superior and inferior vena cava near the right atrium is monitored, reflecting circulating blood volume and cardiac function status. It is commonly used for:
Assessing dehydration or fluid overload;
Guiding fluid therapy for heart failure and shock patients;
Monitoring circulatory stability during major surgery.
(3)Pulmonary Artery Pressure (PAP) Monitoring
(3)Pulmonary Artery Pressure (PAP) Monitoring
Combined with a floating catheter (Swan-Ganz catheter), sensors monitor pulmonary artery pressure to assess pulmonary circulation resistance and right heart load, aiding in the diagnosis of conditions such as pulmonary embolism and pulmonary hypertension, or guiding treatment for severe heart failure.
Intracranial Pressure (ICP) Monitoring:
For patients with cranial injuries, cerebral haemorrhage, cerebral oedema, intracranial tumours, etc., sensors are inserted through a cranial drill hole to directly monitor intracranial pressure. Its functions include:
Early detection of elevated intracranial pressure, enabling timely intervention (e.g., use of diuretics, cerebrospinal fluid drainage) to prevent life-threatening complications such as brain herniation;
Evaluating treatment efficacy and adjusting intracranial pressure reduction strategies;
Guiding sedation and ventilation strategies for critically ill patients.
Urinary and reproductive system monitoring:
By connecting a sensor to a urinary catheter, bladder pressure is measured, which indirectly reflects intra-abdominal pressure (IAP). Elevated intra-abdominal pressure (e.g., due to intestinal obstruction, abdominal bleeding, or severe pancreatitis) may lead to organ dysfunction. Real-time monitoring can provide early warning and guide abdominal decompression therapy.
In obstetrics, it is used to monitor uterine contraction pressure and assess labour progression.
Other Cavity Pressure Monitoring:
Intrathoracic pressure monitoring: Used in patients with pneumothorax or pleural effusion to assess changes in pleural cavity pressure and guide drainage therapy;
Gastrointestinal pressure monitoring: Assists in diagnosing conditions such as intestinal obstruction or gastrointestinal motility disorders and evaluates the effectiveness of gastrointestinal decompression.
3.Advantages of single-use
Prevents cross-infection: Sensors come into direct contact with blood or body fluids, and single-use completely eliminates the risk of infection caused by reuse (such as sepsis and hospital-acquired infections).
Ensures accuracy: Single-use reduces measurement errors caused by disinfection and wear and tear.
Easy to use: No cleaning or sterilisation procedures are required, saving medical staff time and making it particularly suitable for emergency situations.
4.Clinical Significance
Disposable invasive pressure sensors are ‘lifeline monitoring tools’ in critical care medicine, anaesthesiology, neurosurgery and other fields. The real-time, accurate data they provide helps medical staff quickly assess changes in patient condition, formulate individualised treatment plans, and reduce the incidence of complications and mortality.
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Barometric pressure: |
70~106Kpa |
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Relative humidity: |
10~90% (non-condensing) |
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Operating pressure range: |
-50 ~ + 300 mmHg |
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Sensitivity: |
5.0μV/V/mmHg ±3% |
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Nonlinearity and hysteresis |
full-scale reading±1.5% |
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Input impedance: |
1200Ω ~3200Ω |
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Output impedance: |
300±5% |
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Zero pressure offset |
-20mmHg~+20mmHg |
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Thermal offset shift |
≤±0.3mmHg/°C |
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Offset drift |
After warm-up for 20 seconds, drift within 2 mmHg within 8 hours |
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Thermal span shift |
≤±0.1%/°C |
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Frequency response |
Standard pressure set (48 "/ 12") is 40 Hz; Separate sensor > 200 Hz |
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Defibrillator withstand |
Defibrillation depends on the final connection of the equipment |
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Leakage current |
Leakage current is dependent on the final connection of the equipment |
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Overpressure load |
-400~+4000mmHg |
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Shock resistance |
Withstand falling from one meter for three times |
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Light sensitivity |
When exposed to a 3400°K tungsten light, candle light at 3000 feet, it's less than 1 mmHg under rated voltage |
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Contact with the human body |
≤168h |


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