| 摘要 |
A protective covering for a medical instrument, such as an endoscope, is described. The covering includes an elongated hollow sheath having a wall of flexible material. The sheath is substantially gas and water impervious. The sheath further includes auxiliary access tubes associated with the sheath for providing a variety of functions, such as instrument manipulation, and fluid removal. The distal end of the sheath is provided with a cap having an optically clear window to allow the lens portion of the medical instrument to operate.
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