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Sealing film, sealing assembly using sealing film and puncturing device using sealing assembly

A sealing film and component technology, applied in the field of trocars, to achieve the effect of increasing the circumferential circumference, reducing frictional resistance, and taking into account the comfort of operation

Inactive Publication Date: 2018-10-16
FENGH MEDICAL CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] In the existing sealing membrane design, it is difficult to take into account the sealing reliability, switching convenience and operating comfort at the same time. Therefore, it is urgent to make improvements on the basis of the existing design in order to achieve a more ideal effect

Method used

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  • Sealing film, sealing assembly using sealing film and puncturing device using sealing assembly
  • Sealing film, sealing assembly using sealing film and puncturing device using sealing assembly
  • Sealing film, sealing assembly using sealing film and puncturing device using sealing assembly

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Embodiment Construction

[0035] Embodiments of the invention are described in detail below, examples of which are illustrated in the accompanying drawings. The embodiments described below by referring to the figures are exemplary and are intended to explain the present invention and should not be construed as limiting the present invention.

[0036] For easier understanding, first set the side close to the clinician's operation as the proximal end, and the side away from the clinician's operation, that is, the side close to the patient's body, as the distal end. combine figure 1 , the upper part of the figure represents the end close to the clinician's operation, which is the proximal end; while the lower part of the figure is the end in contact with the patient's body, which is considered the distal end. see figure 1 Shown is the overall structure of the trocar 100 in the preferred embodiment of the present invention. A typical trocar 100 includes a puncture needle 1 and a cannula assembly 2 , and...

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Abstract

The invention discloses a sealing film for a puncturing device. The sealing film includes a proximal opening, a distal opening and a sealing wall extending from the distal opening to the proximal opening. The distal opening is formed by a sealing lip for accommodating an inserted apparatus and forming hermetic seal. The sealing wall comprises a plurality of corrugations circumscribing the distal opening and extending laterally from the distal opening, and the corrugations comprises corrugation peaks and corrugation valleys. The sealing wall further comprises at least two thickened portions, each thickened portion is disposed laterally between the two adjacent corresponding corrugations, and the thickened portions are located between the corresponding corrugation peaks and the correspondingcorrugation valleys. The corrugations can increase the circumferential perimeter, can reduce the wrapping area, and can reduce the true contact area between an instrument and the sealing film; and the sealing wall is further provided with the thickening portions, the thickening portions increase the axial tensile rigidity, greatly reduce the frictional resistance and improve the stick slip, and reduce the probability of occurrence of sealing film introversion.

Description

technical field [0001] The invention relates to a minimally invasive surgical instrument, in particular to a sealing film of a puncture device, a sealing assembly using the sealing film and a puncture device using the sealing assembly. Background technique [0002] A trocar is a surgical instrument used in minimally invasive surgery (especially rigid endoscopic surgery) to establish an artificial channel into a body cavity. 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 drive the cannula assembly to penetrate the abdominal wall through the skin opening and enter the body cavity. Once in the body cavity, the needle can be 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 maint...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): A61B17/34A61B17/00
CPCA61B17/34A61B17/00234A61B17/3423A61B17/3462A61B2017/00831
Inventor 孙宝峰马猛
Owner FENGH MEDICAL CO LTD
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