Novel absorbable lacrimal ductule plug

Abstract

The utility model belongs to the technical field of medical instruments, and particularly relates to a novel absorbable lacrimal canaliculus plug which comprises an absorbable plug body implanted in a lacrimal canaliculus, the absorbable plug body is of a cylindrical structure, a contact area is formed at the position where the absorbable plug body makes contact with the lacrimal canaliculus, and the absorbable plug body is of a cylindrical structure. The absorbable plug body comprises a contact area, a limiting mechanism abutting against the interior of a lacrimal canaliculus is installed on the contact area, the limiting mechanism is used for limiting the absorbable plug body to be separated from the lacrimal canaliculus, the limiting mechanism comprises a plurality of ball blocks, the ball blocks are distributed in the contact area in a rectangular array mode, each ball block is of a hemispherical structure, the limiting mechanism further comprises a conical block, and the conical block is arranged in the contact area. By means of the contact area and the limiting mechanism which are additionally arranged, when the absorbable plug body is implanted into the lacrimal ductule, the absorbable plug body is prevented from being separated from the lacrimal ductule through the limiting mechanism, the stability of the absorbable plug body in the lacrimal ductule is improved, and the absorbable plug body is prevented from being separated from the lacrimal ductule.

Description

Technical Field

[0001] The utility model belongs to the technical field of medical devices, and particularly relates to a novel absorbable lacrimal duct plug Background Technique

[0002] During the operation of lacrimal duct plugging, a lacrimal duct plug will be used. By plugging the lacrimal duct with the lacrimal duct plug, the stability of the tear film can be well maintained, and the symptoms of dry eye can be relieved

[0003] At present, the commonly used lacrimal duct plug on the market is a cylindrical degradable material structure with a diameter of 0.5 mm and a length of 2 mm. This kind of lacrimal duct plug is easy to slip outwards during the implantation process, and it is also very likely to slip off the lacrimal duct plug when rubbing the inner canthus of the eye forcefully. Secondly, this kind of lacrimal duct plug is a smooth cylinder and is easy to move downwards, resulting in a decline in its lacrimal duct obstruction function Content of the Utility Model

[0004] The purpose of the utility model is to provide a novel absorbable lacrimal duct plug to solve the problems raised in the above background technique

[0005] To achieve the above purpose, the utility model provides the following technical scheme: a novel absorbable lacrimal duct plug, comprising: an absorbable plug body implanted in the lacrimal duct, the absorbable plug body is a cylindrical structure, and a contact area is formed at the position where the absorbable plug body contacts the lacrimal duct. A limiting mechanism abutted in the lacrimal duct is installed on the contact area, and the limiting mechanism is used to limit the absorbable plug body from detaching from the lacrimal duct

[0006] Preferably, the limiting mechanism includes a plurality of ball blocks, and the plurality of ball blocks are respectively distributed in a rectangular array in the contact area, and the ball blocks are hemispherical structures

[0007] Preferably, the limiting mechanism further includes cone blocks, and the plurality of cone blocks are respectively distributed in a rectangular array in the contact area, and the cross section of the cone blocks is a triangular structure

[0008] Preferably, the limiting mechanism includes at least one limiting ring, the limiting ring is installed in the contact area, and the outer diameter of the limiting ring is greater than the outer diameter of the absorbable plug body

[0009] Preferably, a cone ring is installed on one side of the limiting ring, and the outer diameter of the cone ring is equal to the outer diameter of the limiting ring

[0010] Preferably, a plurality of limiting grooves are axially and equally spaced on the outer periphery of the limiting ring

[0011] Preferably, the limiting mechanism further includes a plurality of limiting pieces, and the plurality of limiting pieces are respectively distributed in a rectangular array in the contact area. The limiting pieces are in a scale-like structure, and one end of each scale-like structure is distributed outward in an inclined state.

[0012] Preferably, a support rod is installed on the inner side of each limiting piece, and the other end of the support rod is installed on the contact area.

[0013] Compared with the prior art, the utility model has the following beneficial effects:

[0014] (1) By adding the contact area and the limiting mechanism, when the absorbable plug body is implanted in the lacrimal duct, the limiting mechanism prevents the absorbable plug body from detaching from the lacrimal duct, improves the stability of the absorbable plug body in the lacrimal duct, and avoids the absorbable plug body from detaching from the lacrimal duct.

[0015] (2) By adding the spherical block or the conical block, when the absorbable plug body is implanted in the lacrimal duct, the spherical block and the conical block are restricted in the lacrimal duct under the extrusion of the absorbable plug body, and the absorbable plug body is prevented from detaching from the lacrimal duct.

[0016] (3) By adding the limiting ring and the conical ring, the conical ring facilitates the implantation of the absorbable plug body with the limiting ring into the lacrimal duct. At the same time, the limiting ring is sunk into the lacrimal duct through the limiting groove, and the absorbable plug body is prevented from detaching from the lacrimal duct.

[0017] (4) By adding the limiting pieces, the limiting pieces are in a scale-like shape that is inclined outward. When the absorbable plug body is implanted in the lacrimal duct, the limiting pieces of the scale-like mechanism enter the lacrimal duct along the direction. When the absorbable plug body moves outward, the limiting pieces are reversely sunk into the lacrimal duct, and the absorbable plug body is prevented from detaching from the lacrimal duct. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] Figure 1 is a perspective view of the utility model;

[0019] Figure 2 is a front view of the first embodiment of the limiting mechanism of the utility model;

[0020] Figure 3 is a front view of the second embodiment of the limiting mechanism of the utility model;

[0021] Figure 4 is a front view of the third embodiment of the limiting mechanism of the utility model;

[0022] Figure 5 is a partial structural schematic diagram of the absorbable plug body, the limiting ring and the conical ring of the utility model;

[0023] Figure 6This is the front view of the fourth embodiment of the limiting mechanism of the present utility model;

[0024] In the figure: 1, absorbable plug body; 2, contact area; 3, limiting ring; 4, tapered ring; 5, spherical block; 6, support rod; 7, limiting piece; 8, limiting groove; 9, tapered block. Specific implementation manner

[0025] Next, the technical solutions in the embodiments of the present utility model will be clearly and completely described in conjunction with the accompanying drawings in the embodiments of the present utility model. Obviously, the described embodiments are only part of the embodiments of the present utility model, rather than all the embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative efforts shall fall within the protection scope of the present utility model.

[0026] Refer to Figure 1 As shown, a novel absorbable lacrimal duct plug provided by the present utility model includes: an absorbable plug body 1 implanted in the lacrimal duct. The absorbable plug body 1 is made of a material that can be absorbed by poly(p-dioxanone). The absorbable plug body 1 has a cylindrical structure. A contact area 2 is formed at the position where the absorbable plug body 1 contacts the lacrimal duct. A limiting mechanism that abuts against the lacrimal duct is installed on the contact area 2. The limiting mechanism is made of an absorbable material made of poly(p-dioxanone), and the limiting mechanism is used to prevent the absorbable plug body 1 from detaching from the lacrimal duct.

[0027] As described above, when using the absorbable plug body 1 provided by the embodiment, the absorbable plug body 1 has a cylindrical structure. After the absorbable plug body 1 is implanted into the lacrimal duct, a contact area 2 is formed between the outer wall of the absorbable plug body 1 and the lacrimal duct. The limiting mechanism is installed in the contact area 2. After the absorbable plug body 1 is implanted into the lacrimal duct, the absorbable plug body 1 is prevented from detaching from the lacrimal duct through the limiting mechanism.

[0028] When the above limiting mechanism is used, at least four embodiments are provided. The four embodiments in the present utility model are partial implementation manners among many embodiments of the present utility model. In specific implementation, the remaining implementation manners of preventing the absorbable plug body 1 from detaching from the lacrimal duct through limiting members are all applicable to the present utility model.

[0029] Embodiment 1

[0030] In this embodiment, in combination with Figure 2 As shown, the limiting mechanism of this embodiment includes a plurality of spherical blocks 5. The plurality of spherical blocks 5 are respectively distributed in a rectangular array in the contact area 2, and the spherical blocks 5 have a hemispherical structure.

[0031] As described above, when using the ball blocks 5 provided in this embodiment, when the absorbable plug body 1 is implanted into the lacrimal canaliculus, multiple ball blocks 5 all sink into the lacrimal canaliculus, preventing the absorbable plug body 1 from detaching from the lacrimal canaliculus.

[0032] Embodiment Two

[0033] In this embodiment, as shown in combination with Figure 3 the limiting mechanism of this embodiment includes cone blocks 9. Multiple cone blocks 9 are respectively distributed in a rectangular array in the contact area 2, and the cross-section of the cone block 9 is a triangular structure.

[0034] As described above, when using the cone blocks 9 provided in this embodiment, when the absorbable plug body 1 is implanted into the lacrimal canaliculus, multiple cone blocks 9 all sink into the lacrimal canaliculus, preventing the absorbable plug body 1 from detaching from the lacrimal canaliculus. At the same time, the tip of the cone block 9 is an arc angle structure, preventing the cone block 9 from scratching the lacrimal canaliculus during installation.

[0035] Embodiment Three

[0036] In this embodiment, as shown in combination with Figure 4 the limiting mechanism of this embodiment includes at least one limiting ring 3. The limiting ring 3 is installed in the contact area 2, and the outer diameter of the limiting ring 3 is greater than the outer diameter of the absorbable plug body 1.

[0037] As shown in combination with Figure 4-5 a cone ring 4 is installed on one side of the limiting ring 3, and the outer diameter of the cone ring 4 is equal to the outer diameter of the limiting ring 3.

[0038] As shown in combination with Figure 4-5 a plurality of limiting grooves 8 are equidistantly opened on the outer periphery of the limiting ring 3 along the axial reverse direction.

[0039] As described above, when using the limiting ring 3 provided in this embodiment, there are three limiting rings 3 shown in the figure arranged along the axial direction on the absorbable plug body 1. At the same time, a cone ring 4 is provided at one end of each limiting ring 3. When the absorbable plug body 1 is implanted into the lacrimal canaliculus, the limiting ring 3 is conveniently implanted into the lacrimal canaliculus through the cone ring 4. When the limiting ring 3 is in the lacrimal canaliculus, the limiting ring 3 sinks into the lacrimal canaliculus through the limiting grooves 8, preventing the absorbable plug body 1 from detaching from the lacrimal canaliculus.

[0040] Embodiment Four

[0041] In this embodiment, as shown in combination with Figure 6 the limiting mechanism of this embodiment further includes a plurality of limiting pieces 7. The plurality of limiting pieces 7 are respectively distributed in a rectangular array in the contact area 2. The limiting pieces 7 are in a scale-like structure, and one end of each scale-like structure is distributed in an inclined state outward.

[0042] As shown in combination with Figure 6As shown, a support rod 6 is installed on the inner side of each limiting piece 7 , and the other end of the support rod 6 is installed on the contact area 2 .

[0043] As mentioned above, when using the limiting pieces 7 provided in the present embodiment, a plurality of limiting pieces 7 are distributed in the contact area 2 in a rectangular array, and at the same time, the ends of the plurality of limiting pieces 7 away from the absorbable plug body 1 are all inclined outward in the same direction. When the absorbable plug body 1 is implanted in the lacrimal canaliculus, the ends of the plurality of limiting pieces 7 sink into the lacrimal canaliculus to prevent the absorbable plug body 1 from being separated from the lacrimal canaliculus. At the same time, a support rod 6 is added between each limiting piece 7 and the absorbable plug body 1 to prevent the limiting piece 7 from being attached to the absorbable plug body 1, thereby improving the stability of the limiting piece 7.

[0044] Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and spirit of the present invention, and that the scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. A novel absorbable lacrimal duct plug, characterized in that: include: An absorbable plug body (1) implanted in the lacrimal canaliculus, the absorbable plug body (1) being a cylindrical structure, a contact area (2) being formed at the position where the absorbable plug body (1) contacts the lacrimal canaliculus, a limiting mechanism abutting against the lacrimal canaliculus being installed on the contact area (2), the limiting mechanism being used to limit the absorbable plug body (1) from leaving the lacrimal canaliculus; The limiting mechanism further comprises a plurality of limiting plates (7), wherein the plurality of limiting plates (7) are respectively distributed in the contact area (2) in a rectangular array, the limiting plates (7) are flaky structures, and one end of each of the flaky structures is distributed outwardly in an inclined state.

2. A novel absorbable lacrimal duct plug according to claim 1, characterized in that: The limiting mechanism comprises a plurality of ball blocks (5), the plurality of ball blocks (5) are respectively distributed in the contact area (2) in a rectangular array, and the ball blocks (5) are hemispherical structures.

3. The novel absorbable lacrimal duct plug according to claim 1, characterized in that: The limiting mechanism further comprises a cone block (9), a plurality of the cone blocks (9) are respectively distributed in the contact area (2) in a rectangular array, and the cross section of the cone block (9) is a triangular structure.

4. The novel absorbable lacrimal duct plug according to claim 1, characterized in that: The limiting mechanism comprises at least one limiting ring (3), the limiting ring (3) being installed in the contact area (2), and the outer diameter of the limiting ring (3) being greater than the outer diameter of the absorbable embolic body (1).

5. The novel absorbable lacrimal duct plug according to claim 4, characterized in that: A cone ring (4) is installed on one side of the limiting ring (3), and the outer diameter of the cone ring (4) is equal to the outer diameter of the limiting ring (3).

6. The novel absorbable lacrimal duct plug according to claim 4, characterized in that: A plurality of limiting grooves (8) are provided on the outer periphery of the limiting ring (3) at equal distances in the axial reverse direction.

7. The novel absorbable lacrimal duct plug according to claim 1, characterized in that: A support rod (6) is installed on the inner side of each of the limiting plates (7), and the other end of the support rod (6) is installed on the contact area (2).

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