Deaths Related to Office Chairs

There have indeed been multiple incidents of injuries and deaths caused by explosions in office chairs, mostly related to the quality or improper use of gas springs.

1. Hazards of Gas Spring Explosions
   The gas spring is the core component for the height adjustment function of office chairs, filled with high-pressure gas (usually nitrogen). If the gas spring is of substandard quality (e.g., using inferior steel, insufficient gas purity, or poor sealing), or if it experiences wear and aging after long-term use, it may lead to an internal pressure imbalance and trigger an explosion. During an explosion, the metal rod or shell fragments of the gas spring can be ejected at high speed, causing severe injuries to the human body, such as piercing into the body, penetrating organs, or causing massive internal bleeding. For example, in 2009, a teenager in Jiaozhou, Shandong, died from excessive blood loss after a gas spring chair exploded and the rod pierced his buttocks; in 2013, Ms. Liu had a steel column penetrate her abdominal cavity, leaving more than ten metal fragments inside her body.

2. Analysis of Typical Accident Cases

• 2007 Case of Ms. Lou in Zhoushan, Zhejiang: The seat was blown through, with fragments penetrating up to 10 centimeters into her body, demonstrating the extreme impact force of the explosion.
• 2010 Case of a Woman in Fujian: Her buttocks were injured, with damage to the rectum and vagina, indicating that the explosion could affect pelvic organs.
• 2015 Case of Ms. Liu in Xiamen: A component was ejected from her buttocks into her body, reflecting the penetrating risk of gas spring fragments.
  These cases show that the injuries caused by gas spring explosions are not limited to the surface of the body but can also endanger internal organs and even be fatal.

3. Causes of Accidents and Preventive Measures
   The main causes of accidents include: poor-quality gas springs (e.g., using industrial waste gas instead of nitrogen), overuse (the lifespan of a gas spring is usually 2-3 years), frequent height adjustments leading to mechanical wear, and high-temperature environments (e.g., direct sunlight) accelerating gas expansion.
   Preventive Recommendations:

• Choose products certified by SGS, BIFMA, etc., when purchasing, and avoid low-priced, inferior chairs;
• Regularly inspect the appearance of the gas spring (e.g., for cracks, gas leaks) and the smoothness of height adjustment;
• Avoid prolonged exposure to sunlight or high-temperature sources;
• Adjust the height gently to reduce mechanical impact.

By using chairs properly and maintaining them regularly, the risk of such incidents can be significantly reduced.