CN209966744U

CN209966744U - Drainage device for glaucoma valve bleb site

Info

Publication number: CN209966744U
Application number: CN201821605919.3U
Authority: CN
Inventors: 王丽强; 黄一飞
Original assignee: Individual
Current assignee: Third Medical Center of PLA General Hospital
Priority date: 2018-09-29
Filing date: 2018-09-29
Publication date: 2020-01-21
Anticipated expiration: 2028-09-29

Abstract

The utility model provides a drainage device for a glaucoma valve filtering bubble part. The drainage device consists of a drainage tube and a pushing and injecting assembly, wherein the pushing and injecting assembly consists of a pushing and injecting rod and a puncture needle. The push injection rod is arranged at the inner side of the front part of the drainage tube, and the front end of the push injection rod is provided with a puncture needle. The front end of the drainage tube is an inclined surface which is used for connecting with the puncture needle and has gradient transition, and the rear part of the drainage tube is placed in the conjunctival sac or the fascia sac. The outer side of the near-end tube wall at the front part of the drainage tube is provided with a barb inverse locking structure. The utility model has the advantages of utilize this drainage device to implant the operation easy operation of glaucoma valve parcel bubble, need not open glaucoma valve parcel bubble, it is little to the damage of eye tissue, effective to the parcel that arouses by the fibrosis, can drain the aqueous humor again and play the eye surface lubrication action, have the eye surface treatment effect to the severe xerophthalmia patient.

Description

Drainage device for glaucoma valve bleb site

Technical Field

The utility model relates to the technical field of medicine, concretely relates to a drainage device that is used for glaucoma valve to filter bubble position.

Background

Glaucoma is an ocular disease affecting the retina and optic nerve and is one of the leading causes of blindness worldwide. Glaucoma results when intraocular pressure increases to higher than normal levels of pressure over an extended period of time. The main reasons for the failure of refractory glaucoma therapy are fibrosis of the tissue in the operation area and the formation of epilepsy, which obstruct the drainage and diffusion of aqueous humor. Currently, ophthalmologists often use glaucoma drainage devices to control intraocular pressure of refractory glaucoma patients, particularly when treating complicated glaucoma, and there are many glaucoma drainage valves which establish artificial pathways for aqueous humor drainage and diffusion by means of drainage articles implanted in the anterior chamber, and drain aqueous humor to conjunctival sac or the fascia sac, thereby reducing intraocular pressure. Glaucoma drainage valves are gradually disabled over time by being wrapped in a computerized membrane. Current drainage tubes or valves are often only surgically opened to wrap the bulb or to replace the drainage device after failure due to being wrapped by a computerized membrane. Not only increasing the pain and economic burden of patients, but also increasing the chance of infection. Thus, there is a need for a device that can drain aqueous humor directly without opening the glaucoma valve wrap.

SUMMERY OF THE UTILITY MODEL

The utility model aims at providing a drainage device for a glaucoma valve filtering bubble part.

The drainage device consists of a drainage tube and a pushing and injecting assembly, and the pushing and injecting assembly consists of a pushing and injecting rod and a puncture needle; the push injection rod is arranged on the inner side of the front part of the drainage tube, the front end of the push injection rod is provided with a puncture needle, the front end of the drainage tube is an inclined plane which is used for being connected with the puncture needle and has oblique gradual transition, and the rear part of the drainage tube is placed in a conjunctival sac or a fascia sac.

Preferably, in the drainage device, the outer side of the front proximal tube wall of the drainage tube is provided with a barb inverse locking structure.

More preferably, in the drainage device, the barb inverse locking structures are symmetrically distributed on the outer side of the front proximal tube wall of the drainage tube, and form an umbrella-shaped switch structure together with the drainage tube.

The utility model discloses a drainage device for glaucoma valve filtration bubble position's simple structure, operation convenient operation need not open glaucoma valve parcel bubble and can directly drain aqueous humor, and is little to the damage of eye tissue, and is effective to the parcel that arouses by the fibrosis.

Drawings

The present invention will be further explained with reference to the accompanying drawings.

Figure 1 shows a schematic view of the implanted portion of the drainage device of the present invention for a glaucoma valve bleb site.

Fig. 2 shows a schematic view of the drainage device for a glaucoma valve bleb site of the present invention.

Detailed Description

The technical scheme of the utility model is further illustrated through the detailed description and the attached drawings, but the ordinary technical personnel in this field can understand that: the following detailed description is intended to illustrate the invention and should not be construed as limiting the invention in any way; however, any modification made based on the spirit of the present invention should be within the scope of the present invention.

The utility model provides a drainage device for a glaucoma valve filtering bubble part, which is used for reducing the package complication in the long-term use process of the glaucoma valve.

The utility model discloses can take following technical scheme:

the utility model discloses a drainage device for glaucoma valve filters bubble position, it comprises drainage tube and injection subassembly.

The pushing injection assembly consists of a pushing injection rod and a puncture needle. The injection rod is arranged on the inner side of the front part of the drainage tube, the puncture needle is arranged at the front end of the injection rod, the front end of the drainage tube is an inclined plane which is used for being connected with the puncture needle and has oblique gradual transition, the outer side of the tube wall of the near end of the front part of the drainage tube is provided with an agnail reverse locking structure, and the agnail reverse locking structures are symmetrically distributed on the outer side of the tube wall of the near end of the front part of the drainage tube and.

Figure 1 shows a schematic view of the implanted portion of the drainage device of the present invention for a glaucoma valve bleb site. As shown in fig. 1, the puncture needle 1, the front portion of the drainage tube 2, and the barb lock structure 3 form an implanted portion. When the puncture needle 1 is used for pricking the implanted part into the filtering bulb wrapped by the glaucoma valve, the barb inverse locking structure 3 plays a role in fixing and prevents the drainage tube 2 from falling off.

Fig. 2 shows a schematic view of the drainage device for a glaucoma valve bleb site of the present invention. The drainage device shown in figure 2 is punctured into a filtering bulb wrapped by a glaucoma valve, the barb inverse locking structure fixes the drainage tube in the filtering bulb, and the rear part of the drainage tube is placed in a conjunctival sac or a fascia sac (aqueous humor drained by a severe dry eye patient is used for wetting the ocular surface) so as to reduce the increase of the intraocular pressure caused by wrapping the filtering bulb and drain the aqueous humor in the filtering bulb.

It is to be understood by persons skilled in the art that the foregoing description is for the purpose of illustrating the invention only and is not to be construed as limiting the invention. For example, any barb counter-locking structure can be used in the drainage device for the glaucoma valve bleb site of the present invention, as long as it can play a role in fixing the drainage tube. The drainage device for the glaucoma valve filtering bubble part of the utility model can be made of any material compatible with the human body, and is all within the protection scope of the utility model.

The utility model has the advantages of utilize the utility model discloses a drainage device for glaucoma valve filters bubble position implants glaucoma valve parcel bubble's operation easy operation, need not open glaucoma valve parcel bubble, and is little to the damage of eye tissue, and is effective to the parcel that arouses by the fibrosis, can drain the aqueous humor again, plays eye surface lubrication effect, has eye surface treatment to the severe xerophthalmia patient, has the unable advantage of replacing of other devices.

Claims

1. A drainage device for a glaucoma valve filtering bleb part comprises a drainage tube and a push injection assembly, wherein the push injection assembly comprises a push injection rod and a puncture needle; the drainage tube is characterized in that the injection rod is arranged on the inner side of the front part of the drainage tube, the puncture needle is arranged at the front end of the injection rod, the front end of the drainage tube is an inclined surface which is used for being connected with the puncture needle and has oblique gradual transition, and the rear part of the drainage tube is placed in a conjunctival sac or a fascia sac.

2. The drainage device for a glaucoma valve bleb site as claimed in claim 1 wherein the anterior proximal tube wall outside of the drainage tube is provided with a barbed anti-lock structure.

3. The drainage device for a glaucoma valve bleb site of claim 2, wherein the barb counter locking structures are symmetrically distributed outside the anterior proximal tube wall of the drainage tube, forming an umbrella switch structure with the drainage tube.