Hernia mesh and preparation method thereof

一种补片、填料筒的技术，应用在医疗用品领域，能够解决技术标准没有得到很好的定义等问题，达到避免人体不良反应、确保稳固性、异物残留少的效果

Active Publication Date: 2018-03-06
THE HONG KONG RES INST OF TEXTILES & APPAREL
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0009] Although the use of hernia mesh has been regarded as an essential means of performing hernia repair, the technical standards are not well defined, and the use of hernia mesh should be case-specific rather than dependent on the tradition, background and background of hernia repair. Familiar Types of Hernias

Method used

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  • Hernia mesh and preparation method thereof
  • Hernia mesh and preparation method thereof
  • Hernia mesh and preparation method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0044] The invention provides a convenient and fast method for preparing hernia mesh, enabling doctors to customize the most suitable hernia mesh in a short time according to the needs of patients' conditions. figure 1 Shows a flow chart of the steps of Embodiment 1 of the present invention, as figure 1 As shown, Embodiment 1 of the present invention includes the following steps,

[0045] S1 selects the first material particles and adds them to the packing tube attached to the 3D printer, and connects the external pressure conduit.

[0046] In this step, in order to make the hernia patch material have better biocompatibility, the first material is a biodegradable material, specifically, it can be polylactic acid and polycarbonate copolymer (copolymer of polylactide andpolytrimethylene carbonate), One or more of poly-4-hydroxybutyrate copolymer (copolymer of Poly-4-hydroxybutyrate), polylactic acid (PLA), 3-hydroxybutyrate and 3-hydroxyvalerate copolymer (PHBV) kind. In this...

Embodiment 2

[0066] In order to improve the biocompatibility and maintain the strength and rigidity of the hernia patch in the early stage, it can still maintain a certain supporting force and be absorbed by the human body during the healing period of the surgical wound. The second embodiment of the present invention has developed a Hernia mesh with core-shell structure.

[0067] Such as Image 6 Shown, embodiment two comprises the following steps,

[0068] S1 selects the first material particles and adds them to the packing tube attached to the 3D printer, and connects the external pressure conduit.

[0069] In this step, in order to reduce the stiffness of the hernia mesh to 70% of the initial stiffness during the healing period of the surgical wound, and at the same time improve the flexibility and softness of the remaining hernia mesh after the degradation of the shell material, the one with a longer degradation time is selected. A biodegradable polymer (for 36 months) is the core la...

Embodiment 3

[0082] Embodiment 3 of the present invention also provides a hernia patch prepared by the above method, such as Figure 7As shown, the hernia mesh provided by Embodiment 3 of the present invention includes a mesh body 1 and a plurality of hook bodies 2 fixedly connected to grid intersections of the mesh body 1 . The patch body 1 is used to sew the hernia gap, which can block the pressure of the abdominal wall, so that the hernia gap can withstand greater pressure and tensile force; multiple hook bodies 2 are used to fix the patch body 1 at the hernia gap. It can effectively connect the hernia mesh with the body, prevent the hernia mesh from moving or twisting during human movement, and avoid the use of additional metal or plastic rivets to fix the hernia mesh in the body, eliminating the need for mechanical The adverse reaction of the human body caused by the fixed method greatly increases the comfort of the patient. In order to ensure that the properties of each hernia patch...

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Abstract

The invention specifically relates to a hernia mesh and a preparation method thereof, belonging to the field of medical supplies. The preparation method for the hernia mesh comprises the following steps: S1, selecting first material particles, adding the first material particles into an accessory filler drum of a 3D printer, and connecting the filler drum with an external pressure conduit; S2, heating the filler drum to a first temperature, and maintaining the filler drum at the temperature for a first preset time to remove moisture in the first material particles; S3, continuing heating the filler drum to a second temperature and then maintaining the filler drum at the temperature for a second preset time to allow the first material particles to be completely fused; and S4, continuing heating the filler drum to a third temperature, selecting a designed 3D printing file for the hernia mesh and printing the hernia mesh via the 3D printer. The hernia mesh prepared in the invention has controllable pore sizes, biocompatibility, tensile strength and elasticity; the preparation method for the hernia mesh is convenient and fast and can reduce the making cost of the hernia mesh; and the hernia mesh can reduce foreign body sensation and discomfort for patients.

Description

technical field [0001] The invention relates to the field of medical supplies, in particular to a hernia patch and a preparation method thereof. Background technique [0002] 3D printing is a technology that uses powder or granular materials to construct objects by layer-by-layer printing based on digital model files. 3D printing is usually realized by using digital technology material printers, and is often used to manufacture models in mold manufacturing, industrial design and other fields. [0003] Hernia patch is mainly used in the repair of abdominal wall hernia, which refers to the bulging of organs or tissues in the abdominal cavity from the weak area or defect of the abdominal wall. Abdominal wall hernia includes inguinal hernia, umbilical hernia, femoral hernia, incisional hernia and parastomal hernia, etc., and inguinal hernia is the most common. Because of the high incidence of abdominal wall hernia, its treatment has become an important social issue. [0004] ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B29C64/118A61L27/34A61L27/18A61L27/58B33Y10/00B33Y80/00B29K67/00B29K69/00
CPCB33Y10/00B33Y80/00A61L27/18A61L27/34A61L27/58B29K2267/04B29K2067/046B29K2069/00A61L31/06A61L31/148A61F2220/0016A61F2240/001A61F2210/0004B33Y50/00A61F2/0063C08L67/04A61F2002/0068A61L27/36
Inventor 陶肖明曾炜袁钰
Owner THE HONG KONG RES INST OF TEXTILES & APPAREL
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