SECHRIST 3500CP-G Air/Oxygen Gas Mixers

Condition: New
Part #: 3500CP-G

$3,226.00

SECHRIST 3500CP-G Air/Oxygen Gas Mixers

SKU: 3500CP-G Categories: ,
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Description

The Sechrist 3500CP-G is a high-precision medical gas mixer specifically engineered for high-stakes clinical environments, including the NICU, OR, and ICU. Designed to meet the rigorous demands of ECMO (Extracorporeal Membrane Oxygenation) and heart-lung bypass procedures, this mixer provides healthcare professionals with a reliable solution for blending medical air and oxygen.

With a focus on low-flow accuracy and long-term stability, the 3500CP-G ensures that patients receive the exact $FiO_2$ required for their respiratory support. Its compact footprint and seamless integration capabilities make it a preferred choice for hospitals seeking a balance between sophisticated performance and ease of use.

Core Technology: Engineered for Stability

The Sechrist 3500CP-G utilizes an advanced mechanical proportioning system to balance gas pressures from medical air and oxygen sources.

  • Precision Balancing: The device is built to handle standard 50 PSI gas supply pressures, maintaining a stable output even if source pressures fluctuate slightly.

  • Low-Flow Optimization: Unlike general-purpose high-flow mixers, the 3500CP-G is tuned for the 0 to 40 LPM range, providing the fine-tuned control necessary for neonatal and specialized adult therapies.

  • Integrated Bleed Flow: A stable bleed flow mechanism is incorporated to ensure that accuracy is maintained even at the lowest flow settings, preventing “stagnant” gas mixtures during sensitive procedures.

Mechanism of Action

The device functions as a pressure-balanced proportioning valve. When medical air and oxygen enter the mixer, the internal diaphragm system equalizes the pressures of both gases.

The user adjusts the $FiO_2$ dial to the desired concentration (21% to 100%). The mixer then blends the gases in the exact ratio required to achieve that concentration. Because the pressures are balanced before mixing, the output remains consistent regardless of changes in the downstream flow resistance from ventilators or oxygenators.

Clinical Applications and Uses

The 3500CP-G is a versatile workhorse for respiratory and surgical departments:

  • ECMO & Heart-Lung Bypass: Provides precise gas enrichment for membrane oxygenators.

  • Neonatal Intensive Care (NICU): Ideal for delicate oxygen delivery where high flow rates could be detrimental to underdeveloped lungs.

  • Ventilator Support: Acts as a reliable primary or backup gas source for specialized ventilation.

  • Operating Rooms: Ensures stable gas delivery during complex cardiovascular surgeries.

Key Advantages

Feature Sechrist 3500CP-G Standard High-Flow Mixers
Flow Capacity Optimized Low-Flow (Up to 40 LPM) High-Flow (70+ LPM)
$FiO_2$ Accuracy ±3% across the entire range Typically ±2–5%
Primary Specialty ECMO, Bypass, and Neonatal General Adult Ventilation
Safety Features Low gas supply pressure alarms Varies by model

Technical Specifications

Parameter Specification
$FiO_2$ Range 0.21 to 1.0 (21% to 100%)
Accuracy ±3%
Maximum Flow 40 LPM (at 50 PSI supply)
Inlet Pressure 50 PSI ± 10 PSI
Alarm System Pneumatic (Low gas supply pressure)
Compatibility Standard DISS or NIST fittings

Frequently Asked Questions

What is the primary clinical advantage of the Sechrist 3500CP-G? The 3500CP-G is specifically optimized for low-flow precision, reaching up to 40 LPM. This makes it exceptionally reliable for ECMO and neonatal applications where $FiO_2$ accuracy of ±3% is critical. Its ability to maintain stable concentrations at low flows sets it apart from bulkier high-flow units.

How does the device handle fluctuations in gas supply pressure? The mixer features a pressure-balancing diaphragm system. If the inlet pressure of either medical air or oxygen changes, the device automatically equalizes the pressures internally before mixing. This ensures that the $FiO_2$ delivered to the patient remains consistent even during minor hospital gas line fluctuations.

Does the Sechrist 3500CP-G require an electrical power source? No, the 3500CP-G is a pneumatic device. It operates entirely on the pressure provided by the medical gas cylinders or wall outlets. This makes it an ideal choice for transport or as a fail-safe backup in critical care settings where electrical power may be interrupted.

Is there an alarm system to alert staff of gas supply issues? Yes, the mixer includes an integrated pneumatic alarm. If the pressure of either the medical air or oxygen supply drops significantly below the required levels (typically a differential of 20 PSI or more), a loud audible whistle triggers to alert clinicians to the potential loss of gas concentration.

Can this mixer be used for both neonatal and adult patients? Absolutely. While its precision at low flow rates makes it a staple in the NICU for neonatal care, its 40 LPM maximum capacity is more than sufficient for many adult applications, particularly in specialized therapies like ECMO and heart-lung bypass where extreme flow isn’t required.

How often does the $FiO_2$ accuracy need to be calibrated? To ensure the ±3% accuracy, the device should undergo routine preventative maintenance as per the manufacturer’s guidelines, typically once a year. Clinicians should also use a calibrated oxygen analyzer to continuously monitor the output during high-stakes procedures to ensure maximum patient safety and protocol adherence.

Listing Terms & Conditions

We ship worldwide, please inquire the shipping rate to your country before placing an order.

We carry all products of this brand in the listing, please let me know if you have any other inquires which is not listed in our store.

All purchases over $1,000 must be paid by wire transfer. We cannot accept international credit card payments for orders over $1,000.

Due to worldwide shipping delays, it is possible that items listed could be on backorder. If the item is unavailable for an extended period, we sincerely apologize for the delay. In this case, we will refund you as soon as we are notified of the backorder and contact you with the confirmation of refund.