Intracranial venous sinus patch

Abstract

The utility model discloses an intracranial venous sinus patch, which belongs to the field of medical instruments and comprises a patch body provided with a plurality of folding line marks. The adhesive units are connected with the sheet body, the adhesive units are annularly distributed on the outer wall of the sheet body, chamfers are arranged at the ends, facing the adjacent adhesive units, of the adhesive units, a gap between every two adjacent adhesive units coincides with one folding line mark, and when the portions, on the two sides of any folding line mark, of the sheet body rotate around the folding line mark to be in a bent state, the adhesive units are arranged on the sheet body. The chamfers of the adjacent adhesive units abut against each other, and the parts on the two sides of the folding line mark form an included angle. Through the arrangement, the sheet body can be folded and maintained at different included angles.

Description

Technical Field

[0001] This utility model belongs to the field of medical device technology, specifically relating to an intracranial venous sinus patch. Background Technology

[0002] The dural venous sinuses are hollow triangular structures located between the inner and outer layers of the dura mater within the cranium. The veins of the brain, a small portion of the cerebral veins, the ophthalmic vein, the labyrinthine vein, and the diploic vein all drain into these sinuses. Intracranial venous sinuses store venous blood and can release it into the body to participate in circulation when needed. The venous sinuses lack valves; the dura mater is thick and tough, and the sinus walls themselves lack smooth muscle and an adventitia, thus they are not contractile. However, the venous sinuses connect to small veins in the body, allowing blood to flow into valved deep veins, thus ensuring their pumping function. Because the venous sinuses lack valves, rupture can lead to intracranial hematoma. If the patient's blood is infected with pathogens such as bacteria or viruses, these pathogens may enter the cranium via the bloodstream, causing intracranial infections and other symptoms.

[0003] Therefore, a occlusion device was designed to prevent extravasation of blood from the venous sinus and subsequent infection. This device is specifically an intracranial venous sinus patch. Utility Model Content

[0004] To overcome the problems mentioned in the background art, the present invention adopts the following technical solution:

[0005] An intracranial venous sinus patch includes: a patch body with a plurality of folding lines; and adhesive units connected to the patch body, the adhesive units being arranged in a ring on the outer wall of the patch body. Each adhesive unit has a chamfered end facing adjacent adhesive units, and the gap between two adjacent adhesive units coincides with a folding line. When the patch body is rotated around any folding line to a bent state, the chamfers of adjacent adhesive units abut against each other, and the portions on both sides of the folding line form an included angle. Because the cross-section of the venous sinus is triangular, medical personnel can adjust the chamfer angle on adjacent adhesive units according to the location of the rupture and the included angle of adjacent surfaces after determining the specific location of the venous sinus rupture, thereby maintaining the included angle of the patch body after bending. By setting multiple folding lines, medical personnel can fold the patch body into various different shapes.

[0006] Furthermore, the sheet body has two end faces that are opposite to each other, the adhesive unit is disposed on the first end face, and the folding line marks are disposed on the first end face and the second end face respectively.

[0007] Furthermore, the material used to make the first end face is one of porous composite polyvinyl alcohol sponge, porous chitosan sponge, porous gelatin, or porous collagen sponge.

[0008] Furthermore, the material used to manufacture the second end face is one of polyethylene, polyurethane, or bovine pericardium membrane.

[0009] Furthermore, it also includes a non-stick layer, which is annular and connected to all of the adhesive units, the non-stick layer being connected to one end of the adhesive unit away from the sheet body.

[0010] Furthermore, the non-stick layer is made of release paper.

[0011] Furthermore, each of the folded line markers includes multiple strip-shaped protrusions with equal spacing, and at least four adhesive units are symmetrically arranged on both sides of each folded line marker. The folded line markers intersect or are parallel to other folded line markers.

[0012] Furthermore, the shape of the sheet is one of a rectangle, a circle, or a regular polygon.

[0013] Furthermore, the thickness of the adhesive unit is at least 1 mm, and when the sheet is laid flat, the surrounding adhesive units form a cylindrical cavity, the height of which is the same as the thickness of the adhesive unit.

[0014] Furthermore, the folded line marks divide the sheet into several parts of equal area.

[0015] The beneficial effects of this utility model are:

[0016] By designing the two opposing end faces of the patch to be both absorbent and waterproof, end face one can absorb blood overflowing from the venous sinus and, after saturating with blood, presses it firmly against the wound on the outer wall of the venous sinus under the action of the adhesive unit; end face two can prevent venous blood from seeping through the patch to the outside. By incorporating the chamfered adhesive unit, the patch can maintain its bent state in its natural state after bending. When the included angle in this bent state is the same as the included angle of the outer wall of the venous sinus to which the patch is to be attached, a better anastomosis effect is achieved between the patch and the venous sinus. Attached Figure Description

[0017] To more clearly illustrate the technical solutions of the embodiments of this utility model, the drawings used in the description of the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort. Among them:

[0018] Figure 1A schematic diagram of the overall structure of this utility model when the sheet is laid flat;

[0019] Figure 2 A schematic diagram of the overall structure of this utility model when the sheet is laid flat;

[0020] Figure 3 for Figure 2 A schematic diagram of the local structure at point A in the middle;

[0021] Figure 4 This is a schematic diagram of the overall structure of the present invention when the sheet body is in a bent state;

[0022] In the diagram, 1 is the sheet body; 11 is end face one; 12 is end face two; 13 is the fold line marker; 131 is the strip-shaped protrusion; 2 is the adhesive unit; 21 is the chamfer; and 3 is the non-adhesive layer. Detailed Implementation

[0023] The technical solutions of this utility model are clearly and completely described below through specific embodiments. Obviously, the described embodiments are only some embodiments of this utility model, not all embodiments. Those skilled in the art can easily understand other advantages and effects of this utility model from the content disclosed in this specification. This utility model can also be implemented or applied through other different specific embodiments. In the absence of conflict, the following embodiments and features in the embodiments can be combined with each other. Based on the embodiments of this utility model, all other embodiments obtained by those skilled in the art without creative effort are within the protection scope of this utility model.

[0024] An intracranial venous sinus patch, such as Figure 1-4As shown, the device includes: a sheet body 1, which has several folding lines 13; and adhesive units 2 connected to the sheet body 1, which are arranged in a ring on the outer wall of the sheet body 1. Each adhesive unit 2 has a chamfer 21 at its end facing adjacent units. The gap between two adjacent adhesive units 2 coincides with a folding line 13. When the sheet body 1 is rotated around any folding line 13 to a bent state, the chamfers 21 of adjacent adhesive units 2 abut against each other, and the portions on both sides of the folding line 13 form an angle. Because the cross-section of the venous sinus is triangular, and considering the location of the rupture, medical personnel can adjust the angle of the chamfers 21 on adjacent adhesive units 2 according to the location of the rupture and the angle between adjacent surfaces after determining the specific location of the venous sinus rupture. This allows the angle of the sheet body 1 to be maintained after bending, based on the angle of the chamfers 21. By setting multiple folding lines 13, medical personnel can fold the sheet body 1 into various different shapes. Since the adhesive unit 2 itself can deform under pressure, when the sheet 1 is bent, the chamfers 21 of the adhesive units 2 that are not in contact with each other will deform under compression and fit against the outer wall of the venous sinus, thereby preventing blood between the venous sinus and the sheet 1 from seeping out from the chamfers 21.

[0025] In some embodiments of this application, such as Figure 1-4 As shown, the sheet 1 has two opposing end faces, one 11 and the other 12. An adhesive unit 2 is disposed on end face 11, and folding markers 13 are correspondingly disposed on end face 11 and end face 12. In use, end face 11 faces the outer wall of the venous sinus, while end face 12 faces away from it. Therefore, end face 11 directly contacts the blood gushing or overflowing from the venous sinus, while end face 12 contacts the surrounding tissue outside the venous sinus. Thus, end face 11 provides the hemostatic effect of gauze and absorbent cotton, while end face 12 needs to be waterproof to prevent blood from seeping out through the sheet 1. End face 11 absorbs the overflowing blood from the venous sinus and, after being saturated with blood, presses against the wound on the outer wall of the venous sinus under the action of the adhesive unit 2; end face 12 prevents venous blood from seeping out of the sheet 1.

[0026] In some embodiments of this application, such as Figure 1-4 As shown, end face 11 is made of one of the following materials: porous composite polyvinyl alcohol sponge, porous chitosan sponge, porous gelatin, or porous collagen sponge. End face 12 is made of one of the following materials: polyethylene, polyurethane, or bovine pericardium. Therefore, in addition to being waterproof, end face 12 also has good biocompatibility and stability, and can exist for a long time around the intracranial venous sinuses without causing infection of the patient's intracranial environment.

[0027] In some embodiments of this application, such as Figure 1-4As shown, it also includes a non-adhesive layer 3, which is annular and connected to all adhesive units 2. The non-adhesive layer 3 is connected to the end of the adhesive unit 2 facing away from the patch body 1. The non-adhesive layer 3 is made of release paper, which adheres to the surface of each adhesive unit 2 under the action of surface tension. Medical staff can adjust the angle between the chamfer 21 and the end face 11 by squeezing without removing the release paper, thereby controlling the angle of the patch body 1 when it is bent, and maintaining the angle before the patch enters the patient's cranium and anastomoses with the venous sinus.

[0028] In some embodiments of this application, such as Figure 1-4 As shown, each folded line marker 13 includes multiple equally spaced strip-shaped protrusions 131. At least four adhesive units 2 are symmetrically arranged on both sides of each folded line marker 13. The folded line markers 13 intersect or run parallel to other folded line markers 13. The folded line markers 13 divide the sheet 1 into several portions of equal area.

[0029] In some embodiments of this application, such as Figure 1-4 As shown, the shape of patch 1 is one of rectangle, circle or regular polygon. When using it, the appropriate shape can be selected according to the condition of the venous sinus and surrounding tissue of different patients, which helps to improve the versatility of the patch.

[0030] In some embodiments of this application, such as Figure 1-4 As shown, the thickness of the adhesive unit 2 is at least 1 mm. When the sheet 1 is laid flat, the surrounding adhesive units 2 form a cylindrical cavity. The height of the cylindrical cavity is the same as the thickness of the adhesive unit 2. When the end face 11 absorbs blood, it expands and gradually fills the cylindrical cavity. After the end face 11 expands to fill the cylindrical cavity, it can squeeze the window on the outer wall of the venous sinus, thereby achieving the effect of squeezing and stopping bleeding.

Claims

1. An intracranial sinus patch, comprising: include, The sheet body is provided with several fold lines; An adhesive unit is connected to the sheet body. The adhesive units are distributed in a ring on the outer wall of the sheet body. The ends of the adhesive units facing adjacent adhesive units are provided with chamfers. The gap between two adjacent adhesive units coincides with a fold line mark. When the sheet body rotates around the fold line mark to a bent state on both sides of the fold line mark, the chamfers of the adjacent adhesive units abut against each other and the parts on both sides of the fold line mark form an included angle.

2. The intracranial venous sinus patch according to claim 1, characterized in that, The sheet has two opposing end faces, one and two. The adhesive unit is disposed on the first end face, and the folding line markers are disposed on the first end face and the second end face respectively.

3. The intracranial venous sinus patch according to claim 2, characterized in that, The material used to make the first end face is one of the following: porous composite polyvinyl alcohol sponge, porous chitosan sponge, porous gelatin, or porous collagen sponge.

4. The intracranial venous sinus patch according to claim 3, characterized in that, The material used to make the second end face is one of polyethylene, polyurethane, or bovine pericardium.

5. The intracranial venous sinus patch according to claim 1, characterized in that, It also includes a non-stick layer, which is annular and connected to all of the adhesive units, and the non-stick layer is connected to one end of the adhesive unit away from the sheet body.

6. The intracranial venous sinus patch according to claim 5, characterized in that, The non-stick layer is made of release paper.

7. An intracranial sinus patch according to claim 2, wherein, Each of the folded line markers includes multiple strip-shaped protrusions with equal spacing. At least four adhesive units are symmetrically arranged on both sides of each folded line marker. The folded line markers intersect or are parallel to other folded line markers.

8. The intracranial venous sinus patch according to claim 1, characterized in that, The shape of the sheet is one of rectangle, circle, or regular polygon.

9. The intracranial venous sinus patch according to claim 1, characterized in that, The thickness of the adhesive unit is at least 1 mm. When the sheet is laid flat, the adhesive units distributed around it form a cylindrical cavity, and the height of the cylindrical cavity is the same as the thickness of the adhesive unit.

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