CN218187084U

CN218187084U - Corneal drug delivery device

Info

Publication number: CN218187084U
Application number: CN202221435786.6U
Authority: CN
Inventors: 吴元; 晏晓明
Original assignee: Peking University First Hospital
Current assignee: Peking University First Hospital
Priority date: 2022-06-09
Filing date: 2022-06-09
Publication date: 2023-01-03
Anticipated expiration: 2032-06-09

Abstract

The utility model relates to a corneal drug delivery device, which comprises a hollow body, wherein the body comprises a first end, a second end and a wall body formed by extending the first end to the second end; an inner ring cavity and an outer ring cavity are formed in the wall body along the direction from the first end to the second end, and the inner ring cavity and the outer ring cavity are both communicated with the second end of the body; a drug delivery channel and an air flow channel are respectively arranged on the wall body, one end of the drug delivery channel is communicated with the inner ring cavity, and the other end of the drug delivery channel is suitable for being connected with an injector; one end of the airflow channel is communicated with the outer annular cavity, and the other end of the airflow channel is suitable for being connected with an air suction device. The utility model can realize safe drug administration to the cornea within a limited range, and can be used for treating the diseases of the keratoconus or the iatrogenic cornea for expanding the eyes.

Description

Corneal drug delivery device

Technical Field

The utility model relates to a cornea device of dosing especially relates to a device that is used for safe dosing of cornea in the restriction scope.

Background

Currently, there are many eye diseases such as diabetic retinopathy, dry eye, asthenopia, keratitis, keratoconus, and iatrogenic corneal ectasia. Among them, keratoconus is an eye disease characterized by corneal stroma thinning, progressive anterior process of the cornea, irregular astigmatism of the cornea, and corrected visual deterioration. Keratoconus occurs in young people with a prevalence of about 1/2000, with about 21% of keratoconus patients eventually treated with corneal transplantation surgery, accounting for about 16% of all patients with keratoconus.

Iatrogenic corneal ectasia is a disease similar to keratoconus, and mainly occurs after corneal refractive surgery. Since the corneal refractive surgery needs to remove a certain amount of corneal stroma, the mechanical structure of the cornea is unbalanced in some patients, and progressive expansion occurs, which appears to be similar to that of a keratoconus. With the widespread deployment of refractive surgery, the number of such patients is becoming greater. In the treatment of keratoconus or iatrogenic keratoectasia eye diseases, it is necessary to administer drugs (such as therapeutic eye drops) to the cornea, and how to restrict the flow of drugs on the ocular surface to avoid side effects due to pharmacological effects in unnecessary areas is important to ensure the safety and effectiveness of corneal administration.

At present, although various eye administration devices exist in the prior art, the eye administration devices are rarely found, but are used for treating diseases of the eyes of keratoconus or iatrogenic cornea expansion, and can ensure the staying range of the medicine on the surface of the eyes.

Disclosure of Invention

In view of the above problems, it is an object of the present invention to provide a device for safely administering drugs to a cornea within a limited range.

In order to achieve the above purpose, the utility model adopts the following technical scheme:

a corneal drug delivery device comprising a body having a hollow interior, the body comprising a first end, a second end, and a wall extending from the first end to the second end; an inner ring cavity and an outer ring cavity are formed in the wall body along the direction from the first end to the second end, and the inner ring cavity and the outer ring cavity are both communicated with the second end of the body; a dosing channel and an air flow channel are respectively arranged on the wall body, one end of the dosing channel is communicated with the inner ring cavity, and the other end of the dosing channel is suitable for being connected with an injector; one end of the airflow channel is communicated with the outer annular cavity, and the other end of the airflow channel is suitable for being connected with an air suction device.

In the corneal drug delivery device, preferably, the end surface of the second end of the body is a curved surface which is concave upwards, and the edge of the second end forms a contact part which is similar to a sucker.

Preferably, the contact part of the second end is made of silica gel.

In the corneal drug delivery device, the drug delivery channel is preferably an internally threaded channel adapted to be threadedly coupled to an externally threaded syringe.

Preferably, the first end and the second end of the body are both circular, and the outer diameter of the first end is larger than that of the second end.

The utility model discloses owing to take above technical scheme, it has following advantage: the utility model discloses form inner ring chamber and outer ring chamber in the wall body of body, set up on the wall body and dose passageway and airflow channel, dose the passageway and be connected with the inner ring chamber, airflow channel is connected with the outer ring chamber, forms the negative pressure in the outer ring chamber with fixed cornea, lets in the eye drop in to dosing the passageway to including annular chamber and second end intercommunication department dose to the cornea, make whole device can realize dosing to the cornea safety in the limitation range, can be used to keratoconus or iatrogenic cornea expansion eye disease treatment.

Drawings

Fig. 1 is a schematic view of the overall structure of the present invention;

fig. 2 is a schematic sectional structure of the present invention.

Detailed Description

In order to make the objects, technical solutions and advantages of the present invention clearer, the technical solutions of the present invention will be clearly and completely described below with reference to the accompanying drawings. It is to be understood that the embodiments described are only some of the embodiments of the present invention, and not all of them. Based on the embodiments in the present invention, all other embodiments obtained by a person skilled in the art without creative work belong to the protection scope of the present invention.

In the description of the present invention, it should be noted that the terms "upper", "lower", "front", "rear", and the like indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings, which are only for convenience of description and simplification of the description, but do not indicate or imply that the system or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and thus, should not be construed as limiting the present invention. Furthermore, the terms "first," "second," and the like, are used to define elements only for convenience in distinguishing between the elements, and unless otherwise stated, are not intended to imply any particular meaning or importance to the contrary.

In the description of the present invention, it is to be noted that, unless otherwise explicitly specified or limited, the terms "assembled", "disposed" and "connected" are to be construed broadly, and may be, for example, fixedly connected, detachably connected, or integrally connected; can be mechanically or electrically connected; they may be connected directly or indirectly through intervening media, or they may be interconnected between two elements. The specific meaning of the above terms in the present invention can be understood as a specific case by those skilled in the art.

The utility model provides a cornea drug delivery device, which comprises a hollow body, wherein a drug delivery channel body comprises a first end, a second end and a wall body formed by extending the first end of the drug delivery channel to the second end; an inner ring cavity and an outer ring cavity are formed in the dosing channel wall body along the direction from the first end of the dosing channel to the second end of the dosing channel, and the inner ring cavity and the outer ring cavity of the dosing channel are both communicated with the second end of the dosing channel body; the wall of the administration channel is respectively provided with an administration channel and an air flow channel, one end of the administration channel is communicated with the inner ring cavity of the administration channel, and the other end of the administration channel is suitable for being connected with an injector; one end of the dosing channel airflow channel is communicated with the dosing channel outer annular cavity, and the other end of the dosing channel airflow channel is suitable for being connected with an air suction device. The utility model can realize safe drug administration to the cornea within the limited range, and can be used for treating the diseases of the keratoconus or the iatrogenic cornea for expanding the eyes.

The following describes in detail a corneal drug delivery device according to an embodiment of the present invention with reference to the drawings.

As shown in fig. 1 and fig. 2, the utility model provides a corneal drug delivery device, which comprises a hollow body 1, wherein the body 1 comprises a first end 11, a second end 12 and a wall 13 formed by extending the first end 11 to the second end 12; an inner ring cavity 14 and an outer ring cavity 15 are formed in the wall body 13 along the direction from the first end 11 to the second end 12, and both the inner ring cavity 14 and the outer ring cavity 15 are communicated with the second end 12 of the body 1; a dosing channel 16 and an air flow channel 17 are respectively arranged on the wall body 13, one end of the dosing channel 16 is communicated with the inner annular cavity 14, and the other end of the dosing channel 16 is suitable for being connected with an injector; one end of the air flow passage 17 communicates with the outer annular chamber 15, and one end of the air flow passage 17 is adapted to be connected to an air suction device.

In a preferred embodiment, the end surface of the second end 12 of the body 1 is curved in a concave shape, and the edge of the second end 12 forms a contact part similar to a sucker, so that the second end 12 of the body 1 can better fit with the cornea.

In a preferred embodiment, the contact portion of the second end 12 is made of silicone.

In a preferred embodiment, the administration channel 16 is an internally threaded channel that is threadably coupled to an externally threaded syringe, thereby allowing precise control of the rate and pressure of administration.

In a preferred embodiment, the first end 11 and the second end 12 of the body 1 are both circular, the first end 11 having an outer diameter greater than the outer diameter of the second end 12.

The utility model discloses a use as follows:

when the device is used, the second end 12 of the body 1 is placed right above a cornea, the air flow channel 17 is connected with the air suction device, the administration channel 16 is connected with the injector, the air suction device is controlled to suck air, negative pressure is formed at the communication position of the outer ring cavity 15 and the second end 12, the cornea is tightly attached to the end face of the second end 12, the injector is controlled to inject eye drops into the administration channel 16, the eye drops enter the inner ring cavity 14 through the administration channel 16, therefore, a medicine dispensing area is formed only in the inner ring cavity 14, the flow of medicines can be limited, and the whole device can realize safe administration to the cornea within a limited range.

Finally, it should be noted that: the above embodiments are only used to illustrate the technical solution of the present invention, and not to limit it; although the present invention has been described in detail with reference to the foregoing embodiments, those skilled in the art will understand that: the technical solutions described in the foregoing embodiments may still be modified, or some technical features may be equivalently replaced; such modifications and substitutions do not depart from the spirit and scope of the present invention in its corresponding aspects.

Claims

1. A corneal drug delivery device, comprising: the hollow wall comprises a hollow body (1), wherein the body (1) comprises a first end (11), a second end (12) and a wall body (13) formed by extending the first end (11) to the second end (12); an inner ring cavity (14) and an outer ring cavity (15) are formed in the wall body (13) along the direction from the first end (11) to the second end (12), and the inner ring cavity (14) and the outer ring cavity (15) are communicated with the second end (12) of the body (1); a dosing channel (16) and an air flow channel (17) are respectively arranged on the wall body (13), one end of the dosing channel (16) is communicated with the inner annular cavity (14), and the other end of the dosing channel (16) is suitable for being connected with a syringe; one end of the air flow channel (17) is communicated with the outer ring cavity (15), and the other end of the air flow channel (17) is suitable for being connected with a suction device.

2. A corneal drug delivery device as claimed in claim 1, wherein: the end face of the second end (12) of the body (1) is an upward concave curved surface, and the edge of the second end (12) forms a contact part similar to a sucker shape.

3. A corneal drug delivery device as claimed in claim 2, wherein: the contact part of second end (12) is the silica gel material.

4. A corneal drug delivery device according to claim 1, wherein: the administration channel (16) is an internally threaded channel adapted to be threadedly connected to an externally threaded syringe.

5. A corneal drug delivery device according to claim 1, wherein: the first end (11) and the second end (12) of the body (1) are both circular, and the outer diameter of the first end (11) is larger than that of the second end (12).