Developable sealed type woven body implantation material and conveying device

A braided body and implant technology, which is applied in the field of closed braided implants and delivery devices, can be developed in the field of closed braided implants and delivery devices, and can solve the difficulty of delivery and positioning, the generation of pathological thrombus, and the inability to Observe the cooperation status of the interventional device and the hemangioma to achieve the effect of reducing medical expenses, reducing direct contact or damage, and reducing potential risks

Inactive Publication Date: 2013-04-03
邹旭华
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

This patch often affects and induces the uncontrolled generation of underlying pathological thrombus problems in the parent vessel
[0005] At present, most of the interventional therapy devices use one or two development points to judge the delivery position of the interventional device. The coordination status of the interventional device and the hemangioma cannot be observed through DSA images. Positioning is difficult and has certain limitations

Method used

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  • Developable sealed type woven body implantation material and conveying device
  • Developable sealed type woven body implantation material and conveying device
  • Developable sealed type woven body implantation material and conveying device

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0044] The shape of the braided net is a double ellipse shape 2, which is composed of an upper ellipse surface 8, an intermediate transition surface 9, and an upper ellipse surface 10. 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 the growth layer of endothelial cells.

[0045] The double ellipse shape 2 can change the major and minor axes of the lower ellipsoid according to the degree of coverage of the aneurysm neck, thereby adjusting the degree of coverage of the aneurysm neck, and can adapt to the embolization of wide-necked aneurysms of different sizes. It can effectively solve the problem of wide-necked aneurysms or The problem of giant aneurysms. Such as hemangiomas with different neck widths on the blood vessel 24 at the bifurcation.

[0046] There are...

Embodiment 2

[0052] The shape of the braided mesh is a shape 3 formed by a double ellipse and a proximal topographic surface, which is formed by a double ellipse and a proximal topographic surface 25. The proximal topographic surface 25 is a smoothly stitched surface between the elliptical curved surface and the curved surface. Curved surface modeling is possible, and the braided implant cooperates with the aneurysm to avoid or reduce the braided implant entering the parent vessel to occupy the vascular lumen, reducing the loss of late vessel lumen, and reducing late potential risks such as thrombosis, which is beneficial The hemodynamic distribution is beneficial to the embolization and cooperation of lateral aneurysms, and is mostly used for embolization and cooperation of lateral aneurysms.

Embodiment 3

[0054] The shape of the braided net is a mushroom shape 4 composed of double spherical crowns, which is composed of an upper spherical crown surface 26, a middle transition curved surface 27, and a lower spherical crown surface 28.

[0055] In an embodiment of the present invention: the sealing film may use a biodegradable and developable non-woven flow blocking film.

[0056] The production method of non-woven fabrics is to select the biodegradable material polydioxanone (PDO) as the raw material, and its biodegradation period is 6 to 9 months; the raw materials are spun to form fibers, and finally made into biodegradable Degradation of PDO monofilaments with a diameter of 0.1mm to 0.5mm; the final production of PDO non-woven membranes by spunbonding.

[0057] The degradable and developable non-woven choke film is a degradable non-woven choke film 33 coated with a developable material, and the biodegradable materials used in the degradable non-woven choke film include polyla...

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Abstract

The invention discloses a developable sealed type woven body implantation material, which comprises a woven mesh, a sealing film and a developing layer and is characterized in that the woven mesh is a single-layer or double-layer nickel-titanium alloy mesh, the developing layer is one layer of coated developing materials, the sealing film is sewed into any one layer of the single-layer or double-layer nickel-titanium alloy mesh, then, an endothelial cell growth promotion layer is coated at the outer surface of the sealing film, and the developing layer is arranged among or outside any layer of the woven mesh, the sealing film and the endothelial cell growth promotion layer. The conveying device comprises an outer sheath tube (32), an inner sheath tube (31) and a conveying guide wire (30), wherein the inner sheath tube (31) is sheathed in the outer sheath tube (32) and is glidingly connected with the outer sheath tube (32). The woven body implantation material is in a self-expansion type, the integral developing can be realized, the sealing film can seal and isolate the hemangioma, the endothelial cell growth promotion layer promotes the growth of endothelial cells in the surface of the woven body implantation material, the woven body implantation material is coated inside endothelial tissues of blood vessels, and the risk of recent and future thrombus generation is reduced.

Description

technical field [0001] The present invention relates to a medical device, relates to a developable closed braided implant and a delivery device, in particular to a developable closed braided implant and a delivery device for treating hemangiomas through nerve intervention . 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. Embolization or closure of cerebral aneurysms is the best method at the stage of emergence. The first method was to ligate or clamp the aneurysm. With the development of imaging equipment such as DSA (with good spatial resolution), it is regarded as a new stand...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): A61B17/12A61L31/06A61L31/08A61L31/16A61L31/18
Inventor 邹旭华
Owner 邹旭华
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