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Fold-type puncture outfit sealing system

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

Active Publication Date: 2016-12-07
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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  • Fold-type puncture outfit sealing system
  • Fold-type puncture outfit sealing system
  • Fold-type puncture outfit sealing system

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Embodiment Construction

[0062]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.

[0063] Figure 5 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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Abstract

The invention relates to a fold-type puncture outfit sealing system. The fold-type puncture outfit sealing system comprises a sealing membrane and a first protection device which are connected; the sealing membrane comprises a near-end opening, a far-end hole and sealing walls extending from the far-end hole to the near end, each sealing wall is provided with a near-end surface and a far-end surface, and the far-end hole is formed by a sealing lip; the first protection device comprises a near-end opening, a far-end opening and a protection wall extending from the far-end opening to the near end, each sealing wall comprises multiple folds which are externally tangent to the sealing lip and transversely and outwards extend, each fold comprises a fold peak, a fold valley and a fold wall extending from the fold peak to the fold valley, and the folds surround the sealing lip and are integrally arranged in a dish-shaped mode; the protection wall of the first protection device comprises folds of which the number is the same as that of the sealing walls and the shape and the size are matched with those of the sealing walls. According to the fold-type puncture outfit sealing system, bent stacking and winding of the protection device and the sealing membrane can be reduced, and then frictional resistance generated after inward turning is decreased.

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): A61B17/00A61B17/34
CPCA61B17/00234A61B17/3421A61B17/3462A61B17/3494A61B17/3498A61B17/3423A61B2017/3464A61B2017/3419A61B2017/0034A61B2017/00862A61B17/34
Inventor 朱莫恕
Owner 5R MED TECH CHENGDU CO LTD
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