这是一条用于连接病人监护仪与血氧探头的接口转换延长线。其核心功能是解决不同制造商设备之间的接口兼容性问题，并延长信号传输距离。具体而言，它一端适配宝莱特（Biolight）​ 监护仪上常见的12针血氧接口，另一端则转换为（Nellcor）​ 风格的DB9灰白色大型母头接口，以连接标准的Nellcor兼容血氧探头。线缆总长度为2米。

This is an interface conversion and extension cable​ designed to connect a patient monitor to a pulse oximetry (SpO₂) sensor. Its primary purpose is to resolve compatibility issues between devices from different manufacturers and extend the signal transmission distance. Specifically, one end is configured for the common 12-pin SpO₂ port​ found on Biolight​ patient monitors, while the other end converts to a Nellcor-style DB9 large female connector​ (typically in grey-white color) to attach standard Nellcor-compatible SpO₂ sensors. The total cable length is 2 meters.

关键特征与描述：

1. 1.
   “兼容”：此线缆为非原厂生产的第三方兼容配件。其设计严格遵循原厂接口的电气定义和物理规格，旨在实现与原装线缆相同的功能，通常具有更高的性价比。
2. 2.
   接口解析：
   • •
     A端（设备端）：宝莱特12针公头连接器。此接口通常为白色或透明塑料外壳，内含12根金属针脚，用于插入宝莱特定制型号监护仪（如某些BeneView、uMEC系列型号）的血氧模块插座。
   • •
     B端（探头端）：Nellcor风格DB9母头连接器。这是一个标准的9针D-sub微型接口（DB9），外壳通常为灰白色，是“大母头”​ 类型（尺寸大于常见的“小母头”）。这是Nellcor血氧探头系统中应用最广泛的接口标准之一，可连接市面上绝大多数标有“兼容Nellcor”的重复性或一次性血氧探头。
3. 3.
   核心功能：
   • •
     接口转换：在宝莱特监护仪与标准的Nellcor兼容血氧探头之间建立电气连接，实现跨品牌设备的使用，提高探头选择的灵活性。
   • •
     信号延长：2米的长度有效延伸了探头的工作距离，为病床布局、手术室操作或转运过程提供更大的灵活性，避免拉扯探头线。
4. 4.
   电气与设计：
   • •
     线缆内部包含多根独立屏蔽导线，精确对应两端的针脚定义，确保血氧饱和度（SpO₂）​ 和脉率（PR）​ 信号的稳定、准确传输，并可能包含探头识别或使能信号线。
   • •
     线身通常采用柔韧、耐用的PVC或TPU材料，具有良好的抗弯曲、抗拉扯和抗酒精擦拭性能。
5. 5.
   应用场景：
   • •
     在医院、诊所、救护车等场合，当需要将库存中大量的标准Nellcor兼容探头，用于接口为宝莱特12针的特殊监护仪时。
     Key Features & Description:

     1. 1.
        "Compatible": This cable is a third-party, non-OEM accessory. It is engineered to strictly adhere to the original manufacturers' electrical pin definitions and physical specifications, aiming to provide identical functionality to genuine cables, often at a more cost-effective price point.
     2. 2.
        Interface Breakdown:
        • •
          End A (Monitor End): Biolight 12-pin male connector. This connector usually has a white or clear plastic housing with 12 metal pins, designed to plug into the SpO₂ module socket of specific Biolight monitor models (e.g., certain BeneView, uMEC series).
        • •
          End B (Sensor End): Nellcor-style DB9 female connector. This is a standard 9-pin D-subminiature (DB9) connector. The housing is typically grey-white​ and is of the "large female"​ type (larger in size than the less common "small female"). It represents one of the most widespread interface standards in the Nellcor sensor ecosystem, compatible with the vast majority of reusable or disposable SpO₂ sensors marked as "Nellcor compatible".
     3. 3.
        Core Functions:
        • •
          Interface Conversion: Establishes an electrical bridge between a Biolight monitor and a standard Nellcor-compatible SpO₂ sensor, enabling cross-brand equipment use and increasing flexibility in sensor selection.
        • •
          Signal Extension: The 2-meter length significantly increases the operational range of the sensor, providing greater flexibility for bed setup, operating room maneuvers, or during patient transport, preventing strain on the sensor cable.
     4. 4.
        Electrical & Design:
        • •
          The cable contains multiple individually shielded wires internally, precisely mapped to the pinouts of both connectors. This ensures stable and accurate transmission of Blood Oxygen Saturation (SpO₂)​ and Pulse Rate (PR)​ signals, and may include lines for sensor identification or enablement.
        • •
          The cable body is typically made of flexible, durable PVC or TPU material, offering good resistance to bending, pulling, and alcohol wiping.
     5. 5.
        Application Scenarios:
        • •
          In hospitals, clinics, or ambulances where there is a need to utilize a large inventory of standard Nellcor-compatible sensors with a monitor that has a dedicated Biolight 12-pin port.