MEDTRONIC 95244 DP38 Adult Bio-Probe™ Flow Probe, 3/8″

Condition: New
Part #: 95244

$650.00

MEDTRONIC 95244 DP38 Adult Bio-Probe™ Flow Probe, 3/8″ , 12 per case,  price ofr per box

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Description

The Medtronic 95244 DP38 Adult Bio-Probe™ is a premium, single-use ultrasonic flow transducer designed for high-precision blood flow monitoring during cardiopulmonary bypass (CPB). Engineered specifically for adult cardiac procedures, this 3/8-inch clamp-on probe integrates with the Affinity™ CP pump circuit to provide perfusionists with the real-time data necessary for safe and effective patient management.

By utilizing non-invasive ultrasonic technology, the DP38 ensures that flow measurements are captured without direct blood contact, maintaining the integrity of the sterile field while delivering a high degree of accuracy across a wide range of flow rates.

Core Technology: Ultrasonic Transit-Time Measurement

The Bio-Probe™ 95244 utilizes advanced ultrasonic transit-time technology. Unlike traditional Doppler methods that depend on the velocity of red blood cells, transit-time technology measures the difference in time it takes for ultrasonic pulses to travel upstream versus downstream. This approach allows the DP38 to deliver a “true” volume flow measurement that remains unaffected by changes in:

  • Hematocrit levels: Accuracy is maintained regardless of hemodilution.

  • Turbulence: The probe accounts for disturbed flow patterns near connectors or pumps.

  • Temperature: Reliable performance throughout the cooling and rewarming phases of bypass.

Mechanism of Action

The DP38 operates via a clamp-on mechanism that creates a secure acoustic interface with 3/8″ x 3/32″ PVC tubing. Once clamped, two transducers within the probe housing send and receive ultrasonic signals through the tubing wall and the blood column.

The Bio-Console™ 560 system processes these signals, calculating the flow rate based on the transit-time differential. Because the probe is external to the fluid path, it eliminates the risk of pressure drops or mechanical hemolysis often associated with inline flow-sensing devices.

Clinical Applications and Uses

The Medtronic 95244 DP38 is primarily indicated for use in adult cardiac surgery requiring extracorporeal circulation. Specific applications include:

  • Arterial Line Monitoring: Continuous tracking of systemic flow during bypass.

  • Cardioplegia Delivery: Ensuring precise volume delivery of myocardial protection solutions.

  • Venous Return Monitoring: Assisting in the management of volume status and reservoir levels.

  • Extracorporeal Membrane Oxygenation (ECMO): Short-term flow monitoring within compatible circuits.

Key Advantages of the DP38 Bio-Probe™

  • High Accuracy: Delivers ±5% accuracy for flows between 1–7 L/min, ensuring dependable data during critical phases of perfusion.

  • Low Drift Performance: Features exceptional stability with less than 50 cc/min of drift over a 24-hour period, ideal for longer surgical cases.

  • Seamless Integration: Designed for plug-and-play compatibility with the Medtronic Bio-Console™ 560, requiring no complex calibration.

  • Non-Invasive Design: The clamp-on application allows for quick setup and adjustments without breaking the sterile circuit.

  • Standardized Sizing: Specifically calibrated for 3/8″ tubing, the industry standard for adult bypass circuits.

Perfusion Setup Process

  1. Selection: Verify that the 3/8″ DP38 probe matches the arterial or venous tubing size of the Affinity™ CP circuit.

  2. Application: Open the probe latch and place it over a straight section of the PVC tubing, ensuring there are no kinks or air gaps.

  3. Connection: Plug the probe connector into the designated flow channel on the Bio-Console™ 560.

  4. Zeroing: Perform the zero-flow calibration according to the Bio-Console™ 560 operator manual before initiating bypass.

  5. Monitoring: Observe real-time flow data and alerts on the console display throughout the procedure.

  6. Disposal: As a single-use device, the probe is discarded following the conclusion of the case to prevent cross-contamination.

Technical Specifications

Feature Specification
Model Number 95244 (DP38)
Tubing Compatibility 3/8″ x 3/32″ (9.53 mm)
Measurement Range 0 – 10 L/min
Accuracy (1–7 L/min) ±5% of reading
Accuracy (<1 L/min) ±50 cc/min
Drift Rate <50 cc/min over 24 hours
Sterility Single-use, disposable
Quantity 12 units per case
Compatible Console Bio-Console™ 560

Frequently Asked Questions

What is the accuracy of the Medtronic 95244 DP38 flow probe?

The DP38 Bio-Probe™ provides a high level of precision with a ±5% accuracy rating for blood flow between 1 and 7 L/min. For lower flow rates under 1 L/min, the probe maintains an accuracy of ±50 cc/min, ensuring reliable data throughout the entire perfusion range.

Can the DP38 Bio-Probe be reused after sterilization?

No, the Medtronic 95244 DP38 is strictly a single-use, disposable device. It is designed and validated for performance during a single surgical procedure. Attempting to resterilize or reuse the probe can lead to mechanical failure, loss of calibration accuracy, and significant risks of patient cross-contamination.

Does hematocrit or blood temperature affect the flow readings?

Unlike Doppler-based systems, the DP38 uses ultrasonic transit-time technology. This method is independent of the blood’s cellular composition and temperature. Consequently, the probe delivers consistent and accurate flow measurements regardless of the patient’s hematocrit levels or the use of hypothermia during the bypass procedure.

Which Medtronic consoles are compatible with the 95244 DP38?

The 95244 DP38 Bio-Probe™ is designed for seamless integration with the Medtronic Bio-Console™ 560 system. It connects directly to the console’s flow sensing ports, allowing the system to display real-time flow data, trends, and safety alerts without the need for external signal converters or hardware.

What size tubing is required for the DP38 model?

The DP38 variant is specifically designed to clamp onto 3/8-inch (9.53 mm) outer diameter tubing, which is the standard size for most adult cardiopulmonary bypass circuits. For pediatric applications using 1/4-inch tubing, Medtronic offers the DP25P variant to ensure a proper acoustic seal and accurate measurement.

How does the clamp-on design benefit the surgical team?

The clamp-on design allows the perfusionist to attach or move the flow probe quickly without interrupting the sterile fluid path. This non-invasive approach reduces the setup time for the extracorporeal circuit and eliminates the risk of air entry or leaks that can occur with inline flow sensors.

Listing Terms & Conditions

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