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Biodegradable fabric body capable of being developed and conveying device

A braided body and biological technology, applied in the field of medical devices, can solve problems affecting pathological thrombus, achieve the effects of reducing thrombus formation, improving immediate effect, and good biological safety

Inactive Publication Date: 2013-05-22
陈平根 +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Limitations: This patch often affects and induces the risk of uncontrolled formation of underlying pathological thrombus in the parent vessel
The existing technology may provide a solution to a certain aspect of the biodegradable braid, but no braid systematically solves all the above problems

Method used

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
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  • Biodegradable fabric body capable of being developed and conveying device
  • Biodegradable fabric body capable of being developed and conveying device
  • Biodegradable fabric body capable of being developed and conveying device

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0067] Figure 1-4 As shown, a developable biodegradable braided sphere 1, which is composed of a biodegradable braided mesh as the main body, also includes a sealing layer 12, a development control layer 37, and a layer 38 for promoting endothelial cell growth in a single layer or a double layer The woven mesh 11 is sewn into the developable sealing layer 12, and the endothelial cell growth-promoting layer 38 is coated on its surface

[0068] The structural features of the braided mesh are: the proximal end of the braided mesh 11 is a gathering part, the far end of the braided mesh 11 is a folded part, the proximal end of the braided mesh 11 has a trumpet-shaped recovery shape 14, and the proximal end of the braided mesh 11 is connected to the Anti-untwist wires 16 are connected between the distal ends.

[0069] The closing structure of the proximal end of the braided mesh 11 is as follows: the wire gathering part is fixedly connected with the proximal end of the braided mes...

Embodiment 2

[0087] Figure 5 As shown, a biodegradable woven body that can be developed has a double elliptical shape 2 , which is composed of an upper elliptical surface 20 , a middle transitional surface 21 , and a lower elliptical surface 22 . The braided implant is mainly composed of a single-layer or double-layer woven mesh 11 sewn into a developable sealing film, and any layer of the single-layer or double-layer woven mesh is sewed into a developable sealing film, and then coated on its surface. Overlying endothelial cell growth promoting layer 38 . The development control layer 37 and endothelial cell growth promoting layer 38 are not shown in the figure.

Embodiment 3

[0089] Image 6 As shown, a biodegradable woven body that can be developed is a mushroom shape 3 composed of double spherical caps, which is composed of an upper spherical cap surface 23 , a middle transition curved surface 24 , and a lower spherical cap surface 25 . The braided implant is mainly composed of a single-layer or double-layer braided mesh sewn into a developable sealing film. The single-layer or double-layer braided mesh is sewn into a developable sealing film in any layer, and then coated on its surface Promotes endothelial cell growth layer 38 . The development control layer and endothelial cell growth promoting layer are not shown.

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Abstract

The invention discloses a biodegradable fabric body capable of being developed and a conveying device. A biodegradable mesh grid serves as a main body. The biodegradable fabric body capable of being developed and the conveying device are characterized in that at least two layers of a sealing layer, a development control layer and a promotion endothelial cell growth layer are arranged on the surface of the mesh grid; the biodegradable mesh grid is woven by composite materials which are obtained by one or various biodegradable high molecular materials in a blending or a copolymerization mode; a form of the biodegradable fabric body is geometry composed of one or a plurality of quadric surfaces and comprises a mushroom shape composed of a spherical shape, a double-elliptical external form and double spherical caps and variants thereof; the mesh grid is a single-layer mesh or a double-layer mesh woven by biodegradable silk. After being implanted into hemangioma, the biodegradable fabric body capable of being developed and the conveying device have a shape memory function and enough mechanical strength, can play a role of embolism blocking hemangioma in a short term and are good in sealing performance. Degraded fragments cannot come off to blood to cause an embolism. The biodegradable fabric body capable of being developed and the conveying device have good biological safety, and the possibility that the degraded fragments cause the embolism is lowered.

Description

technical field [0001] The invention belongs to the field of medical devices, and in particular relates to a visualized biodegradable braid and a delivery device for interventional treatment of hemangiomas. Background technique [0002] Due to the effects of internal and external factors such as mechanical damage, vascular sclerosis, high blood pressure, proliferation of vascular smooth muscle cells, induction of bacterial or viral infection, or blood shock, hemangiomas form in arteriovenous vessels. Subarachnoid hemorrhage induced by cerebral aneurysm rupture leads to stroke; even 80% or more patients die after recurrent cerebral aneurysm rupture. With the continuous development of neurointerventional technology, endovascular embolization has become one of the main methods of interventional treatment of intracranial aneurysms. [0003] Chinese patent 200610029280.4 discloses a detachable coil for treating hemangiomas, which is used for embolization of intracranial aneurys...

Claims

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
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Application Information

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IPC IPC(8): A61B17/12A61L31/18A61L31/10A61L31/14
Inventor 陈平根邹旭华
Owner 陈平根
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