Partially absorbable patch

Abstract

The partially absorbable patch comprises a patch substrate and an absorbable material, the patch substrate is a polypropylene patch substrate or an anti-adhesion patch substrate, the polypropylene patch is of a net structure woven by polypropylene monofilaments, and the absorbable material is arranged on the upper layer of the polypropylene patch substrate; the anti-adhesion patch is of a polypropylene monofilament and polylactic acid monofilament mixed weaving structure, the upper surface of the anti-adhesion patch is provided with a self-fixable polylactic acid barb structure, the lower surface of the anti-adhesion patch is provided with an anti-adhesion coating, and the absorbable material is arranged on the lower layer of an anti-adhesion patch substrate; the absorbable material is in a grid shape or a parallel line shape, and the absorbable material and the patch substrate are connected in a bonding mode, a welding mode, a cross-linking mode or a sewing mode. The absorbable material plays a supporting role in a short time, can be degraded in a short time, has good physical properties and biocompatibility, and is high in degradation speed, small in patient inflammatory response, light in foreign body sensation and fast in postoperative recovery, and the surgical risk is reduced.

Description

Technical Field

[0001] The utility model relates to the technical field of medical devices, in particular to a partially absorbable patch. Background Art

[0002] Polypropylene (PP) is one of the most widely used patch materials in hernia repair surgery. It has good mechanical properties and can adapt to various patch structures, such as flat patch, three-dimensional patch, mesh plug, etc. However, studies have shown that polypropylene patch implantation is prone to cause inflammatory response and abdominal wall adhesion. New coating materials can improve the shortcomings of single-material polypropylene patches to a certain extent. In addition, biological patch technology has also been continuously improving in recent years.

[0003] Some absorbable patches on the market now usually adopt a combined weaving method, using polypropylene monofilaments and absorbable monofilaments to weave together to form a synthetic patch. However, due to this weaving method, a large amount of absorbable materials are used in a single patch, which is easy to cause inflammatory reactions after surgery. Some existing absorbable patch products on the market use too much absorbable material, which will have the disadvantage of excessive exudate during degradation, leading to aggravated postoperative inflammatory reactions and severe local inflammatory irritation.

[0004] Therefore, it is necessary to provide a partially absorbable patch, which is a composite patch synthesized by processing a polypropylene patch base or an anti-adhesion patch base and an absorbable material. The absorbable material is used in a small amount and can be quickly dissected, thereby reducing the risk of postoperative inflammation. Utility Model Content

[0005] In view of this, the purpose of the utility model is to provide a partially absorbable patch, which is compounded with a grid-shaped or parallel line-shaped absorbable material and a patch base. The patch base is a polypropylene patch base or an anti-adhesion patch base. The absorbable material can play a supporting role at the beginning, facilitate operation during surgery, and quickly flatten the patch. It can quickly degrade in the later stage, reducing the risk of inflammation and the probability of recurrence.

[0006] In order to solve the above technical problems, the utility model adopts the following technical solutions:

[0007] A partially absorbable patch, comprising a patch base and an absorbable material, wherein the patch base is a polypropylene patch base or an anti-adhesion patch base, the polypropylene patch base is a mesh structure woven from polypropylene monofilaments, and the absorbable material is arranged on the upper layer of the polypropylene patch base; the anti-adhesion patch base is a mixed structure of polypropylene monofilaments and polylactic acid monofilaments, the upper surface of the anti-adhesion patch base is provided with a self-fixing polylactic acid barb structure, the lower surface of the anti-adhesion patch base is provided with an anti-adhesion coating, and the absorbable material is arranged on the lower layer of the anti-adhesion patch base; the absorbable material is in a grid shape or a parallel line shape, and the connection between the absorbable material and the patch base is bonding, welding, cross-linking or suturing. The partially absorbable patch of the utility model is a composite patch synthesized by processing a polypropylene patch base or an anti-adhesion patch base and an absorbable material, and the absorbable material plays a supporting role in a short time, and quickly degrades and is absorbed by the human body in a short time of 7 to 14 days.

[0008] Preferably, the absorbable material comprises a grid-like structure or a parallel linear structure composed of supporting ribs, and the supporting ribs are in a straight line type, a curved line type or a spiral loop coil type.

[0009] Preferably, the width of the support ribs of the absorbable material is 0.2 mm-2 mm.

[0010] Preferably, the spacing between the support ribs of the absorbable material is 10 mm-30 mm.

[0011] Preferably, the minimum angle between the supporting ribs of the absorbable material is 30°-60°.

[0012] Preferably, the support ribs of the absorbable material are provided with a microporous structure, which can accelerate the degradation process of the absorbable material.

[0013] Preferably, the absorbable material is polylactic acid, polyglycolic acid, polylactic glycolate, polydioxanone, polyglycolide caprolactone, sodium alginate or collagen. The absorbable material can be completely degraded within 7 to 14 days and absorbed by the human body, has no side effects on the body, and has good biocompatibility and absorbability.

[0014] Preferably, the polypropylene patch substrate is a large mesh lightweight polypropylene patch substrate, a large mesh medium weight polypropylene patch substrate or a large mesh heavy weight polypropylene patch substrate. The polypropylene patch substrate is mostly a large mesh lightweight polypropylene patch substrate and a large mesh medium weight polypropylene patch substrate as the base material, and a large mesh heavy weight polypropylene patch substrate can also be used as the base material.

[0015] The beneficial effects of the utility model are as follows:

[0016] The utility model is a partially absorbable patch. Due to the adoption of the above technical solution, the patch is a composite patch made of a polypropylene patch base or an anti-adhesion patch base and an absorbable material. The absorbable material plays a supporting role in a short time, and quickly degrades and is absorbed by the human body in a short time of 7 to 14 days. The amount of absorbable material used is less than the traditional combined weaving form, and it can be degraded in a short time. It not only has good physical properties, but also has good biocompatibility. In addition, the absorbable material degrades quickly, the patient has a small inflammatory reaction, a light foreign body sensation, and a fast postoperative recovery, which reduces the risk of surgery.

[0017] The above description is only an overview of the technical solution of the utility model. In order to more clearly understand the technical means of the utility model and implement it according to the contents of the specification, and at the same time to make the above and other purposes, technical features and advantages of the utility model easier to understand, one or more preferred embodiments are listed below and described in detail with the accompanying drawings as follows. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] One or more embodiments are exemplarily described by pictures in the corresponding drawings, and these exemplified descriptions do not constitute limitations on the embodiments. Elements with the same reference numerals in the drawings represent similar elements, and unless otherwise stated, the figures in the drawings do not constitute proportional limitations.

[0019] Figure 1 A structural schematic diagram of embodiment 1 of a partially absorbable patch of the utility model is shown.

[0020] Figure 2 A structural schematic diagram of embodiment 2 of a partially absorbable patch of the utility model is shown.

[0021] Figure 3 A structural schematic diagram of embodiment 3 of a partially absorbable patch of the utility model is shown.

[0022] Description of main reference numerals:

[0023] 1- Polypropylene patch base, 2- Absorbable material, 3- Anti-adhesion patch base. DETAILED DESCRIPTION

[0024] The specific implementation modes of the present invention are described in detail below in conjunction with the accompanying drawings, but it should be understood that the protection scope of the present invention is not limited by the specific implementation modes.

[0025] Unless explicitly stated otherwise, throughout the specification and claims, the term “comprise” or variations such as “include” or “comprising”, etc., will be understood to include the stated elements or components but not to exclude other elements or components.

[0026] In this document, for the convenience of description, spatial relative terms such as "below", "below", "down", "above", "above", "upper", etc. may be used to describe the relationship between one element or feature and another element or feature in the accompanying drawings. It should be understood that the spatial relative terms are intended to include different orientations of the object in use or operation in addition to the orientation depicted in the figure. For example, if the object in the figure is turned over, the element described as being "below" or "below" other elements or features will be oriented "above" the element or feature. Therefore, the exemplary term "below" can include both below and above. Objects may also have other orientations (rotated 90 degrees or other orientations) and the spatial relative terms used in this document should be interpreted accordingly.

[0027] like Figure 1-Figure 3 As shown, a partially absorbable patch includes a patch base and an absorbable material 2, wherein the patch base is a polypropylene patch base 1 or an anti-adhesion patch base 3, wherein the polypropylene patch base 1 is a mesh structure woven from polypropylene monofilaments, and the absorbable material 2 is arranged on the upper layer of the polypropylene patch base 1.

[0028] The anti-adhesion patch base 3 is a mixed structure of polypropylene monofilament and polylactic acid monofilament. The upper surface of the anti-adhesion patch base 3 is provided with a self-fixing polylactic acid barb structure. The lower surface of the anti-adhesion patch base 3 is provided with an anti-adhesion coating. The absorbable material 2 is arranged in the lower layer of the anti-adhesion patch base 3.

[0029] The absorbable material 2 is a grid-like or parallel-line structure, and the absorbable material 2 is connected to the patch base by bonding, welding, cross-linking or suturing. The partially absorbable patch of the utility model is a composite patch synthesized by processing a polypropylene patch base 1 or an anti-adhesion patch base 3 and an absorbable material. The absorbable material 2 plays a supporting role in a short time, and quickly degrades in a short time of 7 to 14 days and is absorbed by the human body.

[0030] The polypropylene patch substrate 1 is a large mesh lightweight polypropylene patch substrate, a large mesh medium weight polypropylene patch substrate or a large mesh heavy weight polypropylene patch substrate. The polypropylene patch substrate 1 is mostly a large mesh lightweight polypropylene patch substrate and a large mesh medium weight polypropylene patch substrate as the base material, and a large mesh heavy weight polypropylene patch substrate can also be used as the base material.

[0031] The absorbable material 2 includes a grid structure or a parallel linear structure composed of supporting ribs, and the supporting ribs are straight, curved or spiral loop coils. The width of the supporting ribs of the absorbable material 2 is 0.2mm-2mm. The spacing between the supporting ribs of the absorbable material 2 is 10mm-30mm. The minimum angle between the supporting ribs of the absorbable material 2 is 30°-60°. A microporous structure is provided on the supporting ribs of the absorbable material 2. The microporous structure can accelerate the degradation process of the absorbable material 2. The absorbable material 2 is polylactic acid, polyglycolic acid, polylactic glycolate and polydioxanone, polyglycolide caprolactone, sodium alginate or collagen. The absorbable material 2 can be degraded within 7-14 days and absorbed by the human body, has no side effects on the body, and has good biocompatibility and absorbable degradability.

[0032] Example 1

[0033] like Figure 1 A partially absorbable patch is shown, wherein the patch base is a polypropylene patch base 1, and the absorbable material 2 is a grid-like structure.

[0034] Example 2

[0035] like Figure 2 A partially absorbable patch is shown, wherein the patch base is a polypropylene patch base 1, and the absorbable material 2 is a parallel line structure.

[0036] Example 3

[0037] like Figure 3 A partially absorbable patch is shown, wherein the patch base is an anti-adhesion patch base 3, and the absorbable material 2 is a grid-like structure.

[0038] The foregoing description of specific exemplary embodiments of the utility model is for the purpose of illustration and illustration. These descriptions are not intended to limit the utility model to the precise form disclosed, and it is clear that many changes and variations can be made based on the above teachings. The purpose of selecting and describing the exemplary embodiments is to explain the specific principles of the utility model and its practical application, so that those skilled in the art can realize and utilize various different exemplary embodiments of the utility model and various different options and changes. Any simple modifications, equivalent changes and modifications made to the above exemplary embodiments should fall within the scope of protection of the utility model.

Claims

1. A partially absorbable patch, characterized in that: The invention comprises a patch base and an absorbable material (2), wherein the patch base is a polypropylene patch base (1) or an anti-adhesion patch base (3), the polypropylene patch base (1) is a mesh structure woven from polypropylene monofilaments, and the absorbable material (2) is arranged on the upper layer of the polypropylene patch base (1); The anti-adhesion patch base (3) is a mixed structure of polypropylene monofilaments and polylactic acid monofilaments, the upper surface of the anti-adhesion patch base (3) is provided with a self-fixing polylactic acid barb structure, the lower surface of the anti-adhesion patch base (3) is provided with an anti-adhesion coating, and the absorbable material (2) is arranged on the lower layer of the anti-adhesion patch base (3); The absorbable material (2) is in the form of a grid or parallel lines, and the absorbable material (2) is connected to the patch base by bonding, welding, cross-linking or suturing.

2. A partially absorbable patch according to claim 1, characterized in that: The absorbable material (2) comprises a grid-like structure or a parallel line structure composed of supporting ribs, and the supporting ribs are in the form of straight lines, curves or spiral loop coils.

3. A partially absorbable patch according to claim 2, characterized in that: The width of the supporting ribs of the absorbable material (2) is 0.2 mm-2 mm.

4. A partially absorbable patch according to claim 3, characterized in that: The spacing between the support ribs of the absorbable material (2) is 10 mm to 30 mm.

5. A partially absorbable patch according to claim 4, characterized in that: The minimum angle between the supporting ribs of the absorbable material (2) is 30°-60°.

6. A partially absorbable patch according to claim 5, characterized in that: The support ribs of the absorbable material (2) are provided with a microporous structure.

7. A partially absorbable patch according to claim 1, characterized in that: The polypropylene patch base (1) is a lightweight large mesh polypropylene patch base, a medium-weight large mesh polypropylene patch base or a heavy-weight large mesh polypropylene patch base.

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