| 摘要 |
The Adjustable Length Cannula surgical instrument assembly may be provided with a valve seal assembly where the upper portion of the valve seal is rigidly mounted to the upper head end of the adjustable cannula body assembly. The lower portion of the adjustable cannula body is of two or more components that includes a gas seal that telescopes to multiple desired lengths by telescoping and securing in position with a short twist motion with a detent locking detail.
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