Dura mater stitching system
By providing a dura mater suture system including artificial dura mater and fixing parts, the problem of complex needle and thread suture operation in the prior art is solved, and the dura mater repair effect is achieved with simple operation and short learning cycle.
Patent Information
- Application Number
- CN202411734742.7
- Authority / Receiving Office
- CN · China
- Patent Type
- Applications(China)
- Current Assignee / Owner
- Filing Date
- 2024-11-29
- Publication Date
- 2025-02-25
AI Technical Summary
In the prior art, needle and thread suture has certain requirements for the suture surgical operation ability of the suture user, and the learning cycle is long, making it difficult to quickly complete the repair of the dura mater.
A dura suture system is provided, including artificial dura and fixing parts. The artificial dura mater is embedded in the interior and exterior of the dura mater to be sutured through its branches. The fixing member fixes the sides of the dura mater to be sutured on the artificial dura mater through its opening to achieve suturing of the dura mater.
The dura suture system is simple to operate and has low requirements for the suture surgical operation ability of the suture user, which is easy to promote and apply, and reduces the learning cycle of dura repair.
Smart Images
Figure CN119498906A_ABST
Abstract
Description
Technical Field
[0001] The present application relates to the technical field of medical devices, and in particular to a dura mater suturing system. Background Art
[0002] During spinal surgery to remove space-occupying tissue in the spinal canal, it is inevitable to incise the dura mater, or the dura mater may be damaged for other reasons. Complications such as cerebrospinal fluid leakage, pseudomeningocele, central nervous system infection, and poor wound healing caused by dura mater rupture seriously affect the patient's prognosis. Dura mater repair is a major problem faced by clinicians.
[0003] Needle and thread suturing is still the most mature way to repair dura mater injury, but needle and thread suturing requires certain surgical skills of the suturing operator and has a long learning cycle. Therefore, the development of a new composite dura mater repair system is of great significance for the clinical application of dura mater repair.
[0004] It should be pointed out that the information disclosed in the background technology section of this application is only intended to deepen the understanding of the general background technology of this application, and should not be regarded as an admission or suggestion in any form that the information constitutes prior art already known to those skilled in the art. Summary of the invention
[0005] In view of this, the present application provides a dura mater suturing system to help solve the problem in the prior art that needle and thread suturing has certain requirements on the suturing surgical operation ability of the suturing operator and a long learning cycle.
[0006] In a first aspect, an embodiment of the present application provides a dura mater suturing system, comprising:
[0007] An artificial dura mater, comprising a first branch, a second branch and a third branch extending in an axial direction, wherein the first branch is used to be embedded in the bottom of the first side of the dura mater to be sutured, the second branch is used to be embedded in the bottom of the second side of the dura mater to be sutured, and the third branch is used to extend from the rupture area between the first side and the second side of the dura mater to be sutured to the outside of the dura mater to be sutured;
[0008] A fixing member comprises a first free end and a second free end, wherein the space between the first free end and the second free end forms an opening of the fixing member, and the third branch and the ends of the first side and the second side of the dura mater to be sutured are used to be embedded in the interior of the fixing member through the opening of the fixing member. When the two sides of the fixing member are subjected to force, the first free end is used to pass through the first side and the third branch of the dura mater to be sutured, and the second free end is used to pass through the second side and the third branch of the dura mater to be sutured, so that the opening of the fixing member is closed, and the first side and the second side of the dura mater to be sutured are respectively fixed to the artificial dura mater.
[0009] In a possible implementation, the artificial dura mater includes:
[0010] A first surface, the first surface being a surface between the first branch and the second branch, and the first surface being made of a hydrophobic material;
[0011] A second surface, the second surface being a surface between the first branch and the third branch, and the second surface being made of a hydrophilic material;
[0012] The third surface is a surface between the second branch and the third branch, and the third surface is made of a hydrophilic material.
[0013] In a possible implementation manner, the mechanical strength of the first surface is greater than the mechanical strength of the second surface and the third surface.
[0014] In a possible implementation manner, the fixing member is integrally formed.
[0015] In a possible implementation manner, the fixing member is formed by bending a plate or a wire, and the bending shape of the fixing member is a smooth curve.
[0016] In a possible implementation, the fixing member is formed by bending a plate or a wire, and the bent shape of the fixing member is two symmetrically arranged smooth curves, and a connection between the two smooth curves forms a tip facing the opening.
[0017] In a possible implementation manner, the curvatures at any two points on the smooth curve are equal.
[0018] In a possible implementation manner, the fixing member is formed by bending a plate or a wire, and the bent shape of the fixing member is a rectangle with one end open.
[0019] In a possible implementation, the length of the artificial dura mater can be trimmed.
[0020] In a possible implementation manner, the fixing piece is made of metal titanium.
[0021] In the embodiment of the present application, a part of the artificial dura mater can be embedded into the dura mater to be sutured through the ruptured area of the dura mater to be sutured, and the other part is reserved outside the dura mater to be sutured. The ends of the first side and the second side of the dura mater to be sutured are fixed on the artificial dura mater through the fixing piece to achieve the suture of the dura mater. The dura mater suture system is simple to operate, has low requirements on the suture operation ability of the suturer, and is easy to promote and apply. BRIEF DESCRIPTION OF THE DRAWINGS
[0022] In order to more clearly illustrate the technical solutions of the embodiments of the present application, the drawings required for use in the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present application. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative labor.
[0023] Figure 1 A schematic diagram of the structure of a dura mater to be sutured provided in an embodiment of the present application;
[0024] Figure 2 A schematic diagram of the structure of an artificial dura mater provided in an embodiment of the present application;
[0025] Figure 3 A cross-sectional view of an artificial dura mater provided in an embodiment of the present application along a direction perpendicular to the axis;
[0026] Figure 4 A schematic diagram of the structure of a fixing member provided in an embodiment of the present application;
[0027] Figure 5 Provided for the embodiments of this application Figure 4 A schematic diagram of the closed state of the fixing member shown;
[0028] Figure 6 A schematic diagram of the suturing effect of the dura mater provided in an embodiment of the present application;
[0029] Figure 7 A schematic diagram of the structure of another fixing member provided in an embodiment of the present application;
[0030] Figure 8 A schematic diagram of another suturing effect of the dura mater provided in an embodiment of the present application;
[0031] Fig. 9 A schematic diagram of the structure of another fixing member provided in an embodiment of the present application;
[0032] Fig.10 A schematic diagram of another suturing effect of the dura mater provided in an embodiment of the present application. DETAILED DESCRIPTION
[0033] In order to better understand the technical solution of the present application, the embodiments of the present application are described in detail below with reference to the accompanying drawings.
[0034] It should be clear that the described embodiments are only part of the embodiments of the present application, rather than all the embodiments. Based on the embodiments in the present application, all other embodiments obtained by ordinary technicians in the field without creative work are within the scope of protection of the present application.
[0035] The terms used in the embodiments of the present application are only for the purpose of describing specific embodiments, and are not intended to limit the present application. The singular forms "a", "said" and "the" used in the embodiments of the present application and the appended claims are also intended to include plural forms, unless the context clearly indicates other meanings.
[0036] It should be understood that the term "and / or" used in this article is only a description of the association relationship of associated objects, indicating that there can be three relationships. For example, A and / or B can represent: A exists alone, A and B exist at the same time, and B exists alone. In addition, the character " / " in this article generally indicates that the associated objects before and after are in an "or" relationship.
[0037] See also Figure 1 , is a schematic diagram of the structure of a spinal dura mater to be sutured provided in an embodiment of the present application. Figure 1 As shown, there is a ruptured area 103 in the dura mater 100 to be sutured. For the sake of convenience, in this application, the two sides of the ruptured area 103 are respectively referred to as the first side 101 and the second side 102 of the dura mater 100 to be sutured. The ruptured area 103 of the dura mater can cause complications such as cerebrospinal fluid leakage, pseudomeningocele, central nervous system infection, and poor wound healing, which seriously affect the patient's prognosis. Therefore, dura mater repair is a major problem faced by clinicians.
[0038] In order to repair the dura mater, an embodiment of the present application provides a dura mater suturing system, including an artificial dura mater 200 and a fixing member 300. When in use, a portion of the artificial dura mater 200 can be embedded into the interior of the dura mater 100 to be sutured through the ruptured area 103 of the dura mater 100 to be sutured, and the other portion is reserved outside the dura mater 100 to be sutured. Through the fixing member 300, the ends of the first side 101 and the second side 102 of the dura mater 100 to be sutured are fixed on the artificial dura mater 200 to achieve suture of the dura mater. The dura mater suturing system is simple to operate, has low requirements on the suture operation ability of the suturer, and is easy to promote and apply.
[0039] See also Figure 2 , is a schematic diagram of the structure of an artificial dura mater provided in an embodiment of the present application. Figure 2As shown, the artificial dura mater 200 includes a first branch 211, a second branch 212 and a third branch 213 extending along the axis L. Figure 6 As shown, the first branch 211 of the artificial dura mater 200 is used to be embedded in the bottom of the first side 101 of the dura mater 100 to be sutured, the second branch 212 is used to be embedded in the bottom of the second side 102 of the dura mater 100 to be sutured, and the third branch 213 is used to extend from the rupture area 103 between the first side 101 and the second side 102 of the dura mater 100 to be sutured to the outside of the dura mater 100 to be sutured.
[0040] See also Figure 3 , is a cross-sectional view of an artificial dura mater provided in an embodiment of the present application along a direction perpendicular to the axis. Figure 3 As shown, the artificial dura mater 200 includes a first surface 221, a second surface 222 and a third surface 223. Among them, the first surface 221 is the surface between the first branch 211 and the second branch 212, and the first surface 221 is a hydrophobic material. Since the first surface 221 needs to contact the cerebrospinal fluid in the dura mater, therefore, setting the first surface 221 to a hydrophobic material can achieve a better sealing effect, avoid cerebrospinal fluid extravasation, and reduce the effect of cerebrospinal fluid on wound healing. The second surface 222 is the surface between the first branch 211 and the third branch 213, and the second surface 222 is a hydrophilic material. Since the second surface 222 needs to contact the dura mater 100 to be sutured, therefore, setting the second surface 222 to a hydrophilic material makes the second surface 222 have water-absorbing self-adhesiveness, which can improve the fitting effect between the second surface 222 and the dura mater 100 to be sutured, thereby accelerating the speed of wound healing. The third surface 223 is the surface between the second branch 212 and the third branch 213, and the third surface 223 is made of a hydrophilic material. Since the third surface 223 needs to contact the dura mater 100 to be sutured, the third surface 223 is set to a hydrophilic material so that the third surface 223 has water-absorbing self-adhesiveness, which can improve the fitting effect between the third surface 223 and the dura mater 100 to be sutured. It can be understood that the second surface 222 and the third surface 223 are made of the same material.
[0041] It should be noted that, in the embodiment of the present application, the first surface 221, the second surface 222 and the third surface 223 are all made of biomass materials, which have low cytotoxicity, low rejection reaction, little damage, and are safer.
[0042] In a possible implementation, the mechanical strength of the first surface 221 is greater than the mechanical strengths of the second surface 222 and the third surface 223. Since the cerebrospinal fluid in the dura mater has a certain pressure, and the pressure of the cerebrospinal fluid is mainly applied to the first surface 221, improving the mechanical strength of the first surface 221 can reduce the tension on the wound caused by the pressure of the cerebrospinal fluid.
[0043] In a possible implementation, the artificial dura mater 200 is flexible, bendable, and can be cut. In actual application scenarios, the ruptured region 103 of the dura mater is not necessarily a straight line, and the flexible artificial dura mater 200 can be bent arbitrarily according to the extension direction of the ruptured region 103, thereby better fitting the ruptured region 103. In addition, the artificial dura mater 200 can also be cut into corresponding lengths according to the length of the ruptured region 103, thereby improving the versatility of the artificial dura mater 200.
[0044] See also Figure 4 , is a schematic diagram of the structure of a fixing member provided in an embodiment of the present application. Figure 4 As shown, the fixing member 300 includes a first free end 301 and a second free end 302, and the space between the first free end 301 and the second free end 302 forms an opening of the fixing member 300. When the two sides of the fixing member 300 are subjected to force, the first free end 301 and the second free end 302 of the fixing member 300 move toward each other, so that the opening of the fixing member 300 is closed. Figure 5 shown.
[0045] Specifically, Figure 6 As shown, the third branch 213 and the ends of the first side 101 and the second side 102 of the dura mater 100 to be sutured are used to be embedded in the interior of the fixing member 300 through the opening of the fixing member 300. When the two sides of the fixing member 300 are subjected to force, the first free end 301 is used to pass through the first side 101 and the third branch 213 of the dura mater 100 to be sutured, and the second free end 302 is used to pass through the second side 102 and the third branch 213 of the dura mater 100 to be sutured, so that the opening of the fixing member 300 is closed, and the first side 101 and the second side 102 of the dura mater 100 to be sutured are respectively fixed on the artificial dura mater 200.
[0046] It is understandable that when the ruptured area 103 is long, in order to obtain a better suturing effect, a fixing member 300 may be provided at a certain interval along the axial direction of the artificial dura mater 200. It should be noted that those skilled in the art may determine the distance between the two fixing members 300 according to actual needs, and the present application embodiment does not impose any specific limitation on this.
[0047] Please continue reading Figure 4 and Figure 5 In the embodiment of the present application, the fixing member 300 is integrally formed. Specifically, the plate or wire can be bent into a specific shape to obtain the fixing member 300. Of course, in some possible implementations, the fixing member 300 can also be assembled from multiple parts, and the embodiment of the present application does not specifically limit this.
[0048] In the embodiment of the present application, the bending shape of the fixing member 300 is a smooth curve. It should be noted that the smooth curve is a smooth curve in a plane, that is, from the perspective of the cross section of the fixing member 300, the fixing member 300 extends along a smooth curve.
[0049] In a possible implementation, the curvatures at any two points on the smooth curve are equal, that is, the bent shape of the fixing member 300 is a circle with a notch. Of course, in some possible implementations, the curvatures between different points on the smooth curve may not be equal. For example, the bent shape of the fixing member 300 is an ellipse with a notch, or other shapes.
[0050] See also Figure 7 , is a schematic diagram of the structure of another fixing member provided in an embodiment of the present application. Figure 7 As shown, in the embodiment of the present application, the bending shape of the fixing member 300 is two symmetrically arranged smooth curves, and the connection between the two smooth curves forms a tip A facing the opening. Figure 7 The suturing effect of the fixing member 300 on the dura mater is as follows: Figure 8 shown.
[0051] Understandable, relatively Figure 4 The fixing member 300 shown, Figure 7 The height of the fixing member 300 shown (the extension direction of the third branch 213 away from the axis L) is relatively low, thereby reducing the impact on other tissues in the patient's body.
[0052] In a possible implementation, the curvatures at any two points on the two smooth curves are equal, that is, the bending shape of the fixing member 300 is a spliced figure of two circles with gaps. Of course, in some possible implementations, the curvatures between different points on any one of the two smooth curves may also be unequal. For example, the bending shape of the fixing member 300 is a spliced figure of two ellipses with gaps, or other shapes.
[0053] See also Fig. 9 , is a schematic diagram of the structure of another fixing member provided in an embodiment of the present application. Fig. 9 As shown, in the embodiment of the present application, the bent shape of the fixing member 300 is a rectangle with one end open. Fig. 9 The suturing effect of the fixing member 300 on the dura mater is as follows: Fig.10 shown.
[0054] In the embodiment of the present application, the manufacturing process of the fixing member 300 is simpler and saves costs. However, due to the sharp corners protruding outward on the fixing member 300, other tissues in the patient's body may be damaged.
[0055] It should be noted that, in addition to the shapes of the fixing member 300 listed in the embodiment of the present application, those skilled in the art can also design the fixing member 300 into other shapes according to actual needs. For example, the bending shape of the fixing member 300 is a pentagon, hexagon or irregular shape with one end open.
[0056] Furthermore, since titanium has good biocompatibility and has the characteristics of high strength and low density, titanium can be used to prepare the fixing member 300. Of course, those skilled in the art can use other materials to prepare the fixing member 300 according to actual needs, and the embodiment of the present application does not make specific restrictions on this.
[0057] For ease of understanding, the method for using the dura mater suture system provided in the embodiment of the present application is described below, which specifically includes the following steps.
[0058] Step S101: cutting out an artificial dura mater of suitable length according to the length of the ruptured area of the dura mater to be sutured.
[0059] Step S102: embedding the first branch and the second branch of the artificial dura mater into the bottom of the first side and the second side of the dura mater to be sutured respectively through the ruptured area of the dura mater to be sutured, and extending the third branch of the artificial dura mater to the outside of the dura mater to be sutured through the ruptured area of the dura mater to be sutured.
[0060] Step S103: The assistant gently pulls up the dura mater to be sutured on both sides of the third branch, so that the ends of the first side and the second side of the dura mater to be sutured are slightly higher than the wound plane, which is convenient for subsequent suturing.
[0061] Step S104: The suture technician sequentially places a suitable number of fixings at suitable positions of the ruptured area at suitable intervals, and clamps the fixings so that the first side and the second side of the dura mater to be sutured are respectively fixed to the artificial dura mater, thereby completing the repair process. The suture technician may use ordinary clips, pliers or other special tools to clamp the fixings, and the present embodiment of the application does not impose any specific restrictions on this.
[0062] The above is only a specific implementation of the present application. Any person skilled in the art can easily think of changes or substitutions within the technical scope disclosed in the present application, which should be included in the protection scope of the present application. The protection scope of the present application should be based on the protection scope of the claims.
Claims
1. A dura mater suturing system, characterized in that: include: An artificial dura mater, comprising a first branch, a second branch and a third branch extending in an axial direction, wherein the first branch is used to be embedded in the bottom of the first side of the dura mater to be sutured, the second branch is used to be embedded in the bottom of the second side of the dura mater to be sutured, and the third branch is used to extend from the rupture area between the first side and the second side of the dura mater to be sutured to the outside of the dura mater to be sutured; A fixing member comprises a first free end and a second free end, wherein the space between the first free end and the second free end forms an opening of the fixing member, and the third branch and the ends of the first side and the second side of the dura mater to be sutured are used to be embedded in the interior of the fixing member through the opening of the fixing member. When the two sides of the fixing member are subjected to force, the first free end is used to pass through the first side and the third branch of the dura mater to be sutured, and the second free end is used to pass through the second side and the third branch of the dura mater to be sutured, so that the opening of the fixing member is closed, and the first side and the second side of the dura mater to be sutured are respectively fixed to the artificial dura mater.
2. The dura mater suturing system according to claim 1, characterized in that: The artificial dura mater comprises: A first surface, the first surface being a surface between the first branch and the second branch, and the first surface being made of a hydrophobic material; A second surface, the second surface being a surface between the first branch and the third branch, and the second surface being made of a hydrophilic material; The third surface is a surface between the second branch and the third branch, and the third surface is made of a hydrophilic material.
3. The dura mater suturing system according to claim 2, characterized in that: The mechanical strength of the first surface is greater than the mechanical strengths of the second surface and the third surface.
4. The dura mater suturing system according to claim 1, characterized in that: The fixing piece is integrally formed.
5. The dura mater suturing system according to claim 4, characterized in that: The fixing piece is formed by bending a plate or a wire, and the bending shape of the fixing piece is a smooth curve.
6. The dura mater suturing system according to claim 4, characterized in that: The fixing piece is formed by bending a plate or a wire, and the bending shape of the fixing piece is two symmetrically arranged smooth curves, and the connection of the two smooth curves forms a tip facing the opening.
7. The dura mater suturing system according to claim 5 or 6, characterized in that: The curvatures at any two points on the smooth curve are equal.
8. The dura mater suturing system according to claim 4, characterized in that: The fixing piece is formed by bending a plate or a wire, and the bending shape of the fixing piece is a rectangle with one end open.
9. The dura mater suturing system according to claim 1, characterized in that: The length of the artificial dura mater can be cut.
10. The dura mater suturing system according to claim 1, characterized in that: The material of the fixing piece is metal titanium.