CN219127026U

CN219127026U - Drainage device

Info

Publication number: CN219127026U
Application number: CN202222729826.4U
Authority: CN
Inventors: 任冬妮; 王克敏
Original assignee: Mingche Biotechnology Suzhou Co ltd
Current assignee: Mingche Biotechnology Suzhou Co ltd
Priority date: 2022-10-14
Filing date: 2022-10-14
Publication date: 2023-06-06
Anticipated expiration: 2032-10-14

Abstract

The utility model provides a drainage device, and relates to the technical field of medical appliances; the drainage device comprises an anterior chamber imbedding end, a connecting part, an intraductal imbedding end and a lumen; the anterior chamber insertion end, the connecting part and the tube insertion end are connected in sequence; the lumen is a through hole penetrating through the anterior chamber insertion end, the connecting part and the tube insertion end; the anterior chamber implantation end is of a spherical crown structure. According to the drainage device, the insertion end of the anterior chamber is of the spherical crown structure, so that the drainage effect is ensured, friction to the anterior chamber after the drainage device is implanted is reduced, foreign body sensation is reduced, and the use comfort is improved.

Description

Drainage device

Technical Field

The utility model relates to the technical field of medical instruments, in particular to a drainage device.

Background

Glaucoma is a progressive, irreversible vision loss disease characterized by damage to the optic nerve. Glaucoma is a pathogenesis of aqueous humor accumulation in the anterior chamber of the eyeball, which causes excessive rise of intraocular pressure and further causes permanent damage to optic nerve cells; current clinical glaucoma treatment protocols are mainly drug therapy, trabeculectomy, minimally invasive glaucoma surgery (micro-invasive glaucoma surgeries, MIGS), etc., where MIGS has been increasingly applied to the treatment of glaucoma by virtue of safety, efficacy, and fewer complications. MIGS are mainly used to implant drainage devices in the eye to promote aqueous outflow and thereby reduce intraocular pressure.

The existing drainage device is usually placed in the anterior chamber at one end and in Schlemm's canal at the other end to lead out aqueous humor in the anterior chamber; because the drainage device structure placed in the anterior chamber is generally in a cylindrical structure, the patient has a stronger foreign body sensation, and the comfort level of the implanted patient is affected.

Disclosure of Invention

The utility model aims to solve the technical problems that: in order to solve the problem that the drainage device in the prior art has stronger foreign body sensation after being implanted into the anterior chamber of the eye, the utility model provides the drainage device, and the drainage device improves the comfort degree after implantation by adopting the spherical-crown-shaped anterior chamber implantation end, thereby solving the problem that the drainage device in the prior art has stronger foreign body sensation after being implanted into the anterior chamber of the eye.

The technical scheme adopted for solving the technical problems is as follows:

a drainage device, which comprises an anterior chamber imbedding end, a connecting part, a tube imbedding end and a tube cavity;

the anterior chamber insertion end, the connecting part and the tube insertion end are connected in sequence;

the lumen is a through hole penetrating through the anterior chamber insertion end, the connecting part and the tube insertion end;

the anterior chamber implantation end is of a spherical crown structure.

Optionally, the connecting portion has a cylindrical structure.

Optionally, the outer diameter of the connecting portion is smaller than the outer diameters of the anterior chamber insertion end and the tube insertion end, and an annular groove structure is formed at the connecting portion.

Optionally, the in-tube inlet end is a cone-like structure.

Optionally, a protruding structure is provided on the outer wall of the connecting portion.

Optionally, an external thread structure is provided on an outer wall of the connecting portion.

Optionally, the in-tube inlet end is in a cone-shaped structure, and at least one aqueous humor side outlet communicated with the lumen is arranged on the side wall of the in-tube inlet end.

Optionally, the number of the aqueous humor side outlets is four, and the four aqueous humor side outlets are uniformly distributed on the side wall of the in-tube inlet end.

Optionally, the inner diameter of the lumen increases sequentially in a direction from the anterior chamber insertion end to the intraductal insertion end.

The beneficial effects of the utility model are as follows:

according to the drainage device, the insertion end of the anterior chamber is of the spherical crown structure, so that the drainage effect is ensured, friction to the anterior chamber after the drainage device is implanted is reduced, foreign body sensation is reduced, and the use comfort is improved.

Drawings

The utility model will be further described with reference to the drawings and examples.

FIG. 1 is a schematic diagram of a flow diverter according to the present utility model;

FIG. 2 is a schematic diagram of a flow diverter according to the present utility model;

FIG. 3 is a cross-sectional view of the flow diverter of the present utility model;

FIG. 4 is a schematic diagram of a flow diverter according to the present utility model.

In the figure: 1-anterior chamber insertion end; a 2-connection; 21-an external thread structure; 3-a tube insertion end; 31-aqueous humor side outlet; 4-lumen.

Detailed Description

The present utility model will now be described in further detail. The embodiments described below are exemplary and intended to illustrate the utility model and should not be construed as limiting the utility model, as all other embodiments, based on which a person of ordinary skill in the art would obtain without inventive faculty, are within the scope of the utility model.

In order that the above objects, features and advantages of the utility model will be readily understood, a more particular description of the utility model will be rendered by reference to specific embodiments thereof which are illustrated in the appended drawings.

In order to solve the problem that the drainage device has stronger foreign body sensation after being implanted into the anterior chamber of an eye in the prior art, the utility model provides the drainage device, which is shown in the figures 1-4, and comprises an anterior chamber implantation end 1, a connecting part 2, an in-tube implantation end 3 and a lumen 4; wherein the anterior chamber embedded end 1, the connecting part 2 and the tube embedded end 3 are connected in sequence; in the use process, the anterior chamber implantation end 1 is arranged at the anterior chamber, the connecting part 2 is arranged at the trabecular meshwork, and the intraductal implantation end 3 is arranged in Schlemm's canal in the eye; the lumen 4 is a through hole penetrating the anterior chamber insertion end 1, the connecting part 2 and the in-tube insertion end 3 so as to lead out aqueous humor in the anterior chamber through the through hole; in order to improve comfort, the anterior chamber implantation end 1 is preferably in a spherical crown structure, so that the anterior chamber implantation end 1 of the spherical crown structure can be more matched with the space in the anterior chamber, and the circular arc-shaped outer wall is adopted to reduce friction to the anterior chamber after implantation, reduce foreign body sensation and improve comfort.

Specifically, the spherical cap structure at the anterior chamber implantation end 1 may be a spherical cap structure with equal diameter, or an ellipsoidal spherical cap structure.

According to the drainage device, the anterior chamber insertion end 1 is of the spherical crown structure, so that the drainage effect is guaranteed, friction to the anterior chamber after the drainage device is implanted is reduced, foreign body sensation is reduced, and the use comfort is improved.

The connecting part 2 is used for connecting the anterior chamber imbedding end 1 with the intraductal imbedding end 3 and fixing the drainage device at the trabecular meshwork; the connecting portion 2 of the present utility model is preferably cylindrical in shape.

Further, referring to fig. 1 and 2, in order to facilitate the fixation of the drainage device, the outer diameter of the connecting portion 2 is preferably smaller than the outer diameters of the anterior chamber insertion end 1 and the in-tube insertion end 3, that is, the outer diameter of the connecting portion 2 is smaller than the outer diameter of the connecting portion where the anterior chamber insertion end 1 is connected, and meanwhile, the outer diameter of the connecting portion 2 is smaller than the outer diameter of the connecting portion where the in-tube insertion end 3 is connected, so that an annular groove structure is formed at the connecting portion 2 to increase friction force with the trabecular meshwork and improve fixation stability.

When the annular groove structure is formed at the connecting part 2, the maximum outer diameter of the anterior chamber embedding end 1 is preferably 0.23mm, the outer diameter of the connecting part 2 is preferably 0.13mm, the maximum outer diameter of the tube embedding end 3 is preferably 0.09mm, and the inner diameter of the tube cavity 4 is preferably in the range from 0.07mm to 0.09mm.

The tube insertion end 3 may have a cylindrical or other geometric structure, and in order to facilitate the placement of the tube insertion end 3 in schlemm's canal, the tube insertion end 3 is preferably of a cone-shaped structure, i.e. the outer diameter of the tube insertion end 3 at the position where it is connected to the connection part 2 is larger than the outer diameter of the end thereof remote from the connection part 2.

It should be noted that in order to reduce damage to tissue in the eye, the connection between the anterior chamber insertion end 1, the connection end 2 and the tube insertion end 3 is preferably rounded so that the structures can be smoothly transited.

Further, in order to facilitate the fixation of the drainage device, the outer wall of the connecting part 2 is preferably provided with a convex structure (not shown in the figure); alternatively, as shown in fig. 4, it is preferable that the outer wall of the connection part 2 is provided with an external screw structure 21 in order to improve stability of fixation by increasing friction.

When the outer wall of the connecting portion 2 is provided with the protruding structure or the external thread structure 21, the outer diameter of the connecting portion 2 may be larger than the outer diameters of the anterior chamber insertion end 1 and the in-tube insertion end 3, may be the same as the outer diameters of the anterior chamber insertion end 1 and the in-tube insertion end 3, or may be smaller than the outer diameters of the anterior chamber insertion end 1 and the in-tube insertion end 3; the present utility model preferably has an outer diameter of the connection part 2 larger than the outer diameters of the anterior chamber insertion end 1 and the tube insertion end 3.

The utility model further preferably has the structure that the built-in end 3 of the tube is in a cone shape, and the side wall of the built-in end 3 of the tube is provided with at least one aqueous humor side outlet 31 communicated with the tube cavity 4, so that aqueous humor can be directly led out through the tube cavity 4 or can be led out through the tube cavity 4 and the aqueous humor side outlet 31, or aqueous humor can enter the aqueous humor side outlet 31 after passing through the tube cavity 4 and can be led out only from the aqueous humor side outlet 31, and the specific leading-out mode can be determined according to specific treatment requirements, thereby expanding the application range of the drainage device.

The number of the aqueous-side outlets 31 may be determined according to the need; the number of the aqueous humor side outlets 31 is preferably four, and further preferably four aqueous humor side outlets 31 are uniformly distributed on the side wall of the in-pipe insertion end 3, namely, the four aqueous humor side outlets 31 are positioned on the same circumference of the side wall of the in-pipe insertion end 3, and the included angles of the centers of circles between the adjacent aqueous humor side outlets 31 are all 90 degrees.

Further, referring to fig. 3, the inner diameter of the lumen 4 is preferably in a gradually expanding structure, that is, the inner diameter of the lumen 4 sequentially increases along the direction from the anterior chamber insertion end 1 to the tube insertion end 3, so that on one hand, drainage of aqueous humor is facilitated, and on the other hand, the risk of blockage of the lumen 4 can be reduced; in particular, the present utility model preferably tapers the inner diameter of lumen 4 from 0.07mm to 0.09mm.

With the above-described preferred embodiments according to the present utility model as an illustration, the above-described descriptions can be used by persons skilled in the relevant art to make various changes and modifications without departing from the scope of the technical idea of the present utility model. The technical scope of the present utility model is not limited to the description, but must be determined according to the scope of claims.

Claims

1. A drainage device is characterized by comprising an anterior chamber imbedding end (1), a connecting part (2), a tube imbedding end (3) and a tube cavity (4);

the anterior chamber imbedding end (1), the connecting part (2) and the tube imbedding end (3) are connected in sequence;

the lumen (4) is a through hole penetrating through the anterior chamber embedding end (1), the connecting part (2) and the tube embedding end (3);

the anterior chamber implantation end (1) is of a spherical crown structure.

2. The drainage device according to claim 1, wherein the connection portion (2) has a cylindrical structure.

3. The drainage device according to claim 2, wherein the outer diameter of the connecting portion (2) is smaller than the outer diameters of the anterior chamber insertion end (1) and the tube insertion end (3), and an annular groove structure is formed at the connecting portion (2).

4. A drainage device according to claim 3, wherein the tube insertion end (3) has a cone-like structure.

5. The drainage device according to claim 2, characterized in that the outer wall of the connection part (2) is provided with a protruding structure.

6. The drainage device according to claim 2, characterized in that the outer wall of the connection part (2) is provided with an external thread structure (21).

7. The drainage device according to claim 6, wherein the in-tube insertion end (3) has a cone-shaped structure, and at least one aqueous humor side outlet (31) communicating with the lumen (4) is provided on a side wall of the in-tube insertion end (3).

8. The drainage device according to claim 7, wherein the number of the aqueous humor side outlets (31) is four, and the four aqueous humor side outlets (31) are uniformly distributed on the side wall of the tube insertion end (3).

9. The drainage device according to any of claims 1 to 8, wherein the inner diameter of the lumen (4) increases in sequence in a direction from the anterior chamber insertion end (1) to the tube insertion end (3).