Puncture device general purpose type radial direction seal ring and puncture device

A radial sealing and trocar technology, applied in the field of sealing rings and trocars, can solve the problems of inconvenient operation for doctors, poor dynamic sealing effect, easy leakage, etc., and achieve good dynamic sealing performance, good sealing ability, sealing good effect

Active Publication Date: 2008-09-10
周星
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The radial sealing ring adopts a circular structure with a central hole, and adopts a structure that is gradually thinned from the outer edge to the central hole. Easy to leak, poor dynamic sealing effect
For this reason, when using the radial sealing ring of the prior art to use a 5mm surgical instrument on a 10mm trocar, it is necessary to use a conversion sheath (refer to Fig. 5, Fig. 6), which brings inconvenience to the doctor's operation

Method used

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  • Puncture device general purpose type radial direction seal ring and puncture device
  • Puncture device general purpose type radial direction seal ring and puncture device
  • Puncture device general purpose type radial direction seal ring and puncture device

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0051] Embodiment 1: The universal radial sealing ring of the puncture device of the present invention

[0052] According to the design drawings of the technical scheme of the present invention, the medical silicone film near the central through hole of the universal radial seal ring (3) is thicker, forming a high-strength zone (1), and between the outer edge of the seal ring and the high-strength zone A relatively thin medical silicone film is arranged between them to form a weak strength area (2). Usually the thickness of the high-strength region (1) is greater than the thickness of the weak-strength region (2). According to the hardness of the medical silicone film, the thickness ratio between the thickness of the high-strength area (1) and the thickness of the weak-strength area (2) can adopt different values, such as: 1 times, 1.5 times, 1.7 times, 2 times, 2.5 times , 3 times, 4 times and so on.

[0053] The diameter of the center of the universal radial sealing ring (3)...

Embodiment 2

[0059] Embodiment 2: trocar of the present invention

[0060] Manufacture the universal radial sealing ring (3) of the present invention according to embodiment 1, produce the upper cover (6), housing (7), fixed block (5) of the puncture device according to the plastic general processing technology, and produce medical silica gel Process production funnel type one-way valve (4), these parts are assembled, promptly obtained trocar of the present invention. refer to Figure 19 .

[0061] Regardless of whether a 10mm surgical instrument or a 5mm surgical instrument is inserted, the high-strength area (1) on the through hole can hold the surgical instrument tightly to achieve a good sealing effect. Especially when the surgical instrument moves or shakes, the weak-strength area (2) is deformed, while the high-strength area (1) can be close to the surgical instrument (9) without deformation, thereby maintaining a relatively good dynamic seal. refer to Figure 19 , Figure 20 , ...

Embodiment 3

[0062] Embodiment 3: the piercer with 2 universal radial sealing rings of the present invention

[0063] This embodiment is basically the same as Embodiment 2, except that two general-purpose radial sealing rings (3) of the present invention are used to further improve the dynamic sealing effect. refer to Figure 21 , Figure 22 , Figure 27 .

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PUM

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Abstract

The invention relates to a universal radial sealing ring for a puncture machine. The edge of an inner hole of the sealing ring is provided with a high intensity section and a low intensity section is arranged between the outer edge of the sealing ring and the high intensity section. When a surgical instrument is inserted into the inner hole of the high intensity section, the high intensity section can be closely attached to the surgical instrument; when the surgical instrument is moved or shaken, the low intensity section is transformed, but the high intensity section can be closely attached to the surgical instrument and not transformed, thereby maintaining better dynamic sealing. The structure has the advantage that a random replacing among the surgical instruments with a diameter of 12mm, 10mm and 5mm is realized; surgical operations are convenient.

Description

technical field [0001] The invention relates to a medical device, in particular to a puncture device used in minimally invasive surgical operations such as laparoscopy and thoracoscopic surgery and a sealing ring on the puncture device. Background technique [0002] In modern medicine, minimally invasive surgery such as laparoscopy and thoracoscopy has been more and more widely used. In order to avoid iatrogenic infection, disposable trocars (Trocar) The amount of the trocar is also increasing. On the basis of ensuring the performance, simplifying the structure and reducing the cost have become the improvement direction of the trocar. [0003] The sealing structure of the trocar in the prior art consists of a radial sealing ring and a one-way valve. Among them, there are two kinds of one-way valves, one of which is a spring pressing structure (refer to Figure 1 and Figure 2). The spring plate pushes the baffle to press the shape of the silicone sealing ring to seal, and the...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): A61B17/34A61B17/94F16J15/00
Inventor 周星周泰立李艳芳张建刚郭爱军
Owner 周星
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