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Trocar with silencer

A sound-absorbing device and trocar technology, which is applied in the field of trocars and can solve problems such as impact sounds

Active Publication Date: 2018-10-12
GUANGZHOU T K MEDICAL INSTR
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Improvement is needed due to prior art trocars having the disadvantage of rattling when the surgical instrument is moved back and forth

Method used

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  • Trocar with silencer

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0039] Embodiment 1: Containing the trocar of the present invention of the sound-absorbing device of thin-walled tubular structure

[0040] The puncture device 100 of the present invention containing a sound-absorbing device of a thin-walled tubular structure is composed of a puncture rod 101 and a sheath tube 102; wherein the sheath tube 102 includes an end seal 1 and a sleeve 2, and the end seal 1 is detachable Installed on the upper end of the sleeve 2. The end seal 1 includes an upper cover 11 , a radial seal assembly 12 , a noise reduction device 13 and a lower cover 14 . The noise reduction device 13 is an elastic body capable of elastic deformation, one end of the noise reduction device 13 is mounted on the radial seal assembly 12, and the other end of the noise reduction device 13 is mounted on the lower cover 14; The sealing assembly 12 is installed between the upper cover 11 and the lower cover 14 .

[0041] The radial seal assembly 12 includes an upper pressure pl...

Embodiment 2

[0044] Embodiment 2: The piercer of the present invention is integrally manufactured with the silencer device and the radial funnel-shaped sealing ring

[0045] The difference between this embodiment and Embodiment 1 is that the noise reduction device 13 and the radial funnel-shaped sealing ring 12-4 of the radial sealing assembly 12 are manufactured into an integral structure by an integral manufacturing process, which not only reduces parts , and facilitate the installation. At this time, the upper end of the noise reduction device 13 is connected to the radial seal assembly 12 , and the lower end of the noise reduction device 13 is placed on the lower cover 14 of the end seal 1 as in the first embodiment.

[0046] The radial seal assembly 12 includes an upper pressure plate 12-1, a sealing ring protection sheet 12-2, a positioning plate 12-3, a radial funnel-shaped sealing ring 12-4, a lower pressure plate 12-5, and a corrugated sealing ring 12- 6. The radial funnel-shape...

Embodiment 3

[0049] Embodiment 3: The piercer of the present invention containing a sound-absorbing device with a spring structure

[0050] The difference between this embodiment and Embodiment 1 is that the noise reduction device 13 adopts an elastic body with a spring structure. In this embodiment, four springs are used to form the noise reduction device 13 . One end of the spring is installed on the installation hole 12-0 provided on the positioning plate 12-3 of the radial seal assembly 12, and the other end of the spring is installed on the installation hole 14-0 of the lower cover 14 .

[0051] Since the noise reduction device 13 supports the radial seal assembly 12, the gap between the upper cover 11 and the upper pressure plate 12-1 of the radial seal assembly is very small. When the surgical instrument reciprocates, the collision sound between the upper pressing plate 12-1 and the upper cover 11, and between the lower pressing plate 12-5 and the lower cover 14 is avoided, and th...

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PUM

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Abstract

Disclosed is a trocar comprising a silencer. An end sealing assembly of a sheath of the trocar of the present application comprises an upper cover, a radial sealing assembly, a silencer and a lower cover; the silencer being an elastic body having one end installed on the radial sealing assembly and the other end installed on the lower cover; and the radial sealing assembly installed between the upper cover and the lower cover. Since the silencer holds up the radial sealing assembly, a gap between the upper cover and the radial sealing assembly is reduced, thereby avoiding an impact sound produced when a surgical instrument is withdrawn outwards. When the surgical instrument is advanced inwards, the impact sound produced when the surgical instrument is advanced inwards is avoided due to a buffer effect of the silencer.

Description

technical field [0001] The invention relates to a laparoscopic surgical instrument, in particular to a trocar used in laparoscopic surgery. Background technique [0002] Laparoscopic surgery has been more and more widely used. In order to avoid iatrogenic infection, the amount of disposable trocar (Trocar) used in laparoscopic surgery is also increasing. On the basis of ensuring the performance, the structure is simplified , reduce cost, improve performance, this trend has become the direction of trocar improvement. [0003] In order to facilitate the operation, it is required that the puncture device can use both 5mm surgical instruments and 10mm or 12mm surgical instruments. In this way, the diameter of the instrument through hole of the radial sealing ring of the trocar is usually less than 4 mm. When a surgical instrument with a larger diameter, such as a 10mm or 12mm surgical instrument, passes through the surgical instrument through hole of the 4mm radial sealing rin...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): A61B17/34
CPCA61B17/3462A61B2017/00862A61B2017/3464A61B17/34
Inventor 周星朱绍明韦家江刘磷海徐华苹
Owner GUANGZHOU T K MEDICAL INSTR
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