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Puncture outfit sealing system capable of being turned inwards wholly

A technology of sealing system and puncture device, which is applied in puncture needles, puncture needles, medical science, etc., and can solve the problem of large radial force on sealing lip 734

Active Publication Date: 2016-10-26
5R MED TECH CHENGDU CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The 5mm instrument has a large radial space in the 12mm casing, which makes the radial force of the sealing lip 734 larger
[0020] In summary, so far, there is no sleeve assembly that can effectively solve the aforementioned problems

Method used

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  • Puncture outfit sealing system capable of being turned inwards wholly
  • Puncture outfit sealing system capable of being turned inwards wholly
  • Puncture outfit sealing system capable of being turned inwards wholly

Examples

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Embodiment Construction

[0060] Embodiments of the present invention are disclosed herein, however, it is to be understood that the disclosed embodiments are merely exemplary of the invention, which may be practiced in various ways. Therefore, this disclosure is not to be interpreted as limiting, but merely as a basis for the claims and as a basis for teaching one skilled in the art how to use the invention.

[0061] figure 2 The overall structure of the trocar is depicted. A typical trocar includes a trocar 10 (not shown) and a cannula assembly 20 . Cannula assembly 20 has an open proximal end 192 and an open distal end 31 . In a typical application, the puncture needle 10 passes through the cannula assembly 20, and then penetrates the entire abdominal wall through the skin opening and enters the body cavity. Once in the body cavity, the introducer needle 10 is removed leaving the cannula assembly 20 as a conduit for the instrument to and from the body cavity. The proximal end 192 is outside the...

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PUM

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Abstract

The invention relates to a puncture outfit sealing system capable of being turned inwards wholly. A sealing film comprises a near end opening, a far end hole, and a sealing wall stretching from the far end hole to the near end opening. The sealing wall is provided with a near end face and a far end face. The far end hole is formed by a sealing lip and used for containing an inserted instrument and forming air seal. The sealing wall is a seamless sealing body formed by surrounding the sealing lip by multiple positive grooves and multiple reverse grooves in a positive and negative alternated mode in a region close to the sealing lip. The positive grooves are recessed from the near end face to the far end face of the sealing wall, and openings face the near end face. Seen from the far end face, the positive grooves are represented as hunched hollow ribs on the far end face of the sealing wall. The positive grooves and the negative grooves have the functions that the annular perimeter is increased, wrapping regions are reduced, lubricating reliability is improved, and axial tensile rigidity is improved, and therefore friction resistance and stick slip can be greatly reduced.

Description

technical field [0001] The invention relates to a minimally invasive surgical instrument, in particular to a sealing structure of a trocar. Background technique [0002] A trocar is a surgical instrument used to establish an artificial channel into a body cavity in minimally invasive surgery (especially hard tube endoscopic surgery). Usually consists of a cannula assembly and a puncture needle. Its general clinical use method is: first cut a small opening on the patient's skin, then pass the puncture needle through the cannula assembly, and then penetrate the abdominal wall through the skin opening and enter the body cavity together. Once in the body cavity, the needle is removed, leaving the cannula assembly as a channel for the instrument to enter and exit the body cavity. [0003] In rigid endoscopic surgery, it is usually necessary to establish and maintain a stable pneumoperitoneum to obtain sufficient operating space. Cannula assemblies usually consist of a cannula,...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): A61B17/34A61B17/00
CPCA61B17/00234A61B17/3421A61B17/3423A61B2017/0034A61B17/3462A61B2017/3464A61B2017/00845
Inventor 朱莫恕
Owner 5R MED TECH CHENGDU CO LTD
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