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Expandable variable rigidity snake-shaped carrier for natural orifice surgery and application method thereof

A technology of natural orifice and variable stiffness, which is applied in the field of natural orifice surgery to achieve the effect of convenient withdrawal, good flexibility and improved surgical accuracy

Active Publication Date: 2017-09-26
TIANJIN UNIV
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  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0006] The purpose of the present invention is to overcome the deficiencies of the existing surgical tools, and propose an expandable serpentine carrier with variable stiffness and its application method, which can not only ensure the operation accuracy of surgical tools through the conversion of rigid and flexible states, but also protect the human body; Changing the scale to solve the contradiction between the scale of tools and human cavity

Method used

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  • Expandable variable rigidity snake-shaped carrier for natural orifice surgery and application method thereof
  • Expandable variable rigidity snake-shaped carrier for natural orifice surgery and application method thereof
  • Expandable variable rigidity snake-shaped carrier for natural orifice surgery and application method thereof

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Embodiment Construction

[0037] In order to make the object, technical solution and advantages of the present invention clearer, the present invention will be further described in detail below in conjunction with specific embodiments and with reference to the accompanying drawings.

[0038] The expandable rigidity serpentine carrier for natural orifice surgery of the present invention is mainly composed of braided tube and hot-melt adhesive. Its variable stiffness function is realized by changing the state of the hot-melt adhesive. accomplish.

[0039] The expandable rigidity serpentine carrier for natural orifice surgery of the present invention uses a braided tube as the base body, such as figure 1 As shown, the braided wires that make up the braided tube are a plurality of left-handed and right-handed helixes of equal quantity, and the plurality of left-handed helixes are arranged in sequence, and the plurality of right-handed helixes are arranged in sequence, and the left-handed helix and the righ...

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Abstract

The invention discloses an expandable variable rigidity snake-shaped carrier for natural orifice surgery and an application method thereof. A snake-shaped carrier is mainly composed of a weaving pipe and hot melt adhesive; the variable rigidity is realized by changing the hot melt adhesive state, and the variable dimension is realized through screw driving according to the property of the weaving pipe. The expandable variable rigidity snake-shaped carrier for natural orifice surgery has good flexibility and can realize big curvature bending; the adaptation ability to a complex human body orifice environment is stronger; after entering a human body, the carrier is supported by the driving screw and shows a big diameter state; the carrier expands the human body tissues and provides larger orifice channel; after representing the big diameter, the conversion of rigid and flexible states can be realized through controlling the heat input and output after representing the big diameter; besides, the carrier can protect human body orifice from being stabbed and scraped by operation apparatus, and provide support for operation apparatus; therefore, the stability is improved and the operation precision is promoted.

Description

technical field [0001] The invention belongs to the field of natural orifice surgery, and relates to a serpentine carrier with expandable stiffness for natural orifice surgery and an application method thereof. Background technique [0002] As a research hotspot in the medical field, natural orifice transluminalendoscopic surgery (NOTES) has the advantages of less interference to the internal environment, less pain, shorter hospital stay, and no skin scars compared with traditional surgical methods. The so-called natural orifice surgery refers to the surgical mode in which surgical tools enter the human body through the orifice of the human body, including the oral cavity, vagina, anus, etc., and reach the lesion for surgical operation. With the development of science and technology, the difficulties of natural surgery are gradually being overcome, and natural orifice surgery is moving from experiment to clinical practice, and has a good development prospect. [0003] In or...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): A61B90/00A61B17/00A61M29/00A61M25/00
CPCA61B17/00A61B90/00A61B2017/00831A61M25/0023A61M25/0043A61M29/00A61M2025/0024A61M2025/0064
Inventor 王树新尚祖峰任旭阳
Owner TIANJIN UNIV
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