CN2287027Y

CN2287027Y - Miniature intraocular pressure adjustor for glaucoma

Info

Publication number: CN2287027Y
Application number: CN 96236289
Authority: CN
Inventors: 张军锋; 杨春霞
Original assignee: Individual
Current assignee: Individual
Priority date: 1996-09-18
Filing date: 1996-09-18
Publication date: 1998-08-05
Anticipated expiration: 2006-09-18

Abstract

The utility model discloses a miniature intraocular pressure adjustor for glaucoma, which is composed of a main body and a fitting body. The miniature intraocular pressure adjustor for glaucoma is similar to a line wheel, the upper side of which is big and the lower side of which is small. The miniature intraocular pressure adjustor for glaucoma is provided with an installing groove matched with the thickness of corneoscleral coats. A drainage hole for automatically controlling the intraocular pressure, a buffer channel, an access hole and a drainage groove are arranged in the installing groove. An isolation surface which is additionally arranged can prevent conjunctiva proliferation or fiber scarification from blocking a drainage channel to achieve the purposes that the intraocular pressure is reduced durably and the glaucoma is treated assistantly for a long time. The utility model has the advantages of reasonable structure, conspicuous and reliable curative effect, simple and convenient eye planting method, firm retention, small volume, light weight and no foreign body sensation and poison side effect. The miniature intraocular pressure adjustor for glaucoma has stronger application value and discloses a novel curative path for the glaucoma.

Description

The miniature intraocular pressure actuator of glaucoma

This utility model relates to a kind of drainage system of implanting eyeball, and specifically, this drainage system permanent fixation or be implanted in the canthus limbus of sclera tissue can be drawn aqueous humor, reduce improper intraocular pressure, eliminates and prevent the consequence that glaucoma causes effectively.

Glaucoma (Glaucoma) is to cause a kind of oculopathy of looking nipple infringement and defect of visual field owing to intraocular pressure raises.Treat one of glaucomatous means and be and adopt operative treatment, present up-to-date employing be micro-trabeculectomy and hydrogen laser trabeculoplasty, this requirements of operation condition height, medical expense are big, curative effect is lasting inadequately.China patent CN2169402Y " glaucoma drainage system " is a kind of cooperation trabecular resection operation, for the formation that prevents postoperative wound place scleral tissue regeneration or cicatrix, cause conduction hole closed and filter the road and block the drainage system of forever implanting in the ball eye again, it is made up of the main part of regular hexahedron, the front wing and the rear wing of main part both sides, have the osculum that communicates on other four sides of main part, on rear wing, be provided with a suture hole.This device has the following disadvantages: 1. this device must be to embed in the otch implementing trabecular resection operation back, though can keep the persistency of operation, postoperative intraocular infection chance is many, during Operation Fee, effort, the expense height; 2. the osculum of this device is directly exposed to outer surface, contacts with eye inner tissue, permanent implant have eventually by outgrowth fibrous tissue or scar tissue block may; 3. this device main body is partially submerged in the breach after cut of limbus of corneae under the scleral flap, needs rear wing is sewn on the sclera by the suture hole with 10/0 nylon suture, and front wing is placed under the lobe in the limbus of corneae, and then scleral flap stitch back original position and does the conjunctival flap stitching.With 10/0 nylon wire maintenance, in practical operation, the ligation elasticity is difficult to grasp, and it is bad to cross loose maintenance, and tension can make suture cut off and embed in the tissue, perform the operation loaded down with trivial details, patient is painful big, ocular tissue damages big too.

The purpose of this utility model is to provide a kind of and can implants for a long time in the ball eye, and can guarantee the drain disperse and unimpeded, need not to implement trabeculectomy and just can reach and reduce ocular hypertension, cure glaucomatous miniature intraocular pressure actuator.

For achieving the above object, the technical scheme taked of this utility model is: this miniature intraocular pressure actuator is made up of main body, ligand two parts.Main body likeness in form " worker " shape line wheel, the centre is processed with the conduction hole of automatic control intraocular pressure and the patchhole of ligand, and outer dish is complementary with retention grooves and the corneosclera thickness that inner disc forms; Ligand likeness in form is "T"-shaped, and the cervical region place below the isolation surface is processed with communicate four 90 ° access holes each other, is processed with buffer channel in the ligand body body; After ligand body body being inserted the patchhole of main body, the outer dish of the isolation surface of ligand and main body forms drainage trough.Aqueous humor is drawn by drainage trough behind buffer channel, access hole from conduction hole, disperse under conjunctiva, osmotic absorption, reduce unusual ocular hypertension state, keep intraocular pressure and stablize, cure glaucomatous purpose thereby reach.

For effectively controlling the aqueous humor flow velocity, regulating intraocular pressure automatically, the conduction hole diameter of above-mentioned automatic control intraocular pressure is designed to 0.2mm-0.25mm.

Be parallel to each other between the outer dish of the isolation surface of above-mentioned ligand and main body, the gap that forms between them is the width and the access hole equal diameters of drainage trough, and preferred value is 0.2mm.

Above-mentioned miniature intraocular pressure actuator is according to human eye's anatomic form and aqueous humor drainage approach, and a series of clinical symptoms that cause according to the high intraocular pressure of glaucoma and sign research produce, and it has following distinguishing feature:

1. rational in infrastructure: utilize retention grooves and canthus scleral thickness to be complementary, this device is connected across on the corneoscleral junction, maintenance is reliable; The conduction hole aperture is appropriate, may command aqueous humor flow velocity, adjusts intraocular pressure automatically, in case intraocular pressure drawback fluctuated; Have 180 all drainage troughs, drain is filled the air, and what is more important is covered with on it and organizes isolation surface in addition, can thoroughly prevent conjunctiva hypertrophy or fiber cicatrixization and blocks drainage channel, guarantees that access hole is unimpeded all the time, and blood pressure lowering is continual and steady.

2. it is simple to plant a method: need not implement trabecular resection operation, implant an eye back eye local organization response light, wound healing is fast, patient's misery is little, and not only economy but also convenient was convenient to extensively promote the use of.

3. evident in efficacy and reliable: it is obvious to plant a back antihypertensive effect, and resolution of symptoms is fast, and sign alleviates speed, eye inner tissue's form stable, no foreign body sensation and toxicity, side effect.

4. volume is little, and the ectosome diameter only is 1.5mm, total height 1.2mm; In light weight, be easy to carry.

Be described further this reality is novel below in conjunction with drawings and Examples;

Fig. 1 is total assembling structure cutaway view of the present utility model;

Fig. 2 is the ligand cutaway view;

Fig. 3 is the main body cutaway view;

Among Fig. 1 to Fig. 3, this miniature intraocular pressure actuator is made up of main body 1, ligand 2 two parts, main body 1 likeness in form " worker " shape line wheel, its axle center is processed with the conduction hole 3 and the ligand patchhole 4 of 0.2mm automatic control intraocular pressure, coils 6 retention grooves 5 that form with inner disc 7 outward and is complementary with corneosclera thickness, is 0.7mm, the outer dish 6 diameter  1.5mm of main body, inner disc 7 diameter  1.3mm, outer imperial palace urinate in implanting and removing, in case be strayed in the eye; Ligand 2 likeness in form is "T"-shaped, and isolation surface 8 be circular, and with the equal diameters of outer dish 6, its time neck surface place is processed with communicate four 90 ° access holes 9 each other, is processed with buffer channel 10 in the body body of ligand 2; The body body of ligand 2 is packed into behind the patchhole 4 of main body 1, be parallel to each other between the isolation surface 8 of ligand 2 and the outer dish 6 of main body, the gap between them is the equal diameters of the width and the access hole 9 of drainage trough 11, is 0.2mm.The outer dish 6 of main body 1, inner disc 7 and ligand 2 be 0.1mm every card thickness.This miniature intraocular pressure actuator ectosome diameter is 1.5mm, total height 1.2mm, the material that can adopt Merlon or rustless steel etc. and ocular tissue organism to adapt, preferably select Merlon for use, this material light transmittance is 90%, toughness is good, water absorption rate is low, high-and low-temperature resistance, proportion 1.2, meet the human-body biological characteristic, and the formed precision height, be particularly suitable for making this miniature intraocular pressure actuator.

This miniature intraocular pressure actuator is planted a method and is: cutting with the limbus of corneae at any place of corneoscleral junction is the conjunctival flap of substrate, be about 10mm, on corneoscleral junction, cut one and be suitable for the aperture that the intraocular pressure actuator is implanted, the intraocular pressure actuator is connected across on the corneoscleral junction, sew up conjunctiva continuously, art finishes.It is simple to plant a method, and economy is convenient again.

Claims

1. miniature intraocular pressure actuator of glaucoma, it is characterized in that it is made up of main body (1), ligand (2) two parts, main body (1) likeness in form " worker " shape line wheel, be processed with the conduction hole (3) of automatic control intraocular pressure and the patchhole (4) of ligand (2) in the center pillar, outer dish (6) is complementary with corneosclera thickness with the retention grooves (5) that inner disc (7) forms; Ligand (2) likeness in form is "T"-shaped, and the cervical region place below the isolation surface (8) is processed with communicate four 90 ° access holes (9) each other, is processed with buffer channel (10) in the body body of ligand (1); The body body of ligand (2) is inserted in the patchhole (4) of main body (1), and the isolation surface (8) of ligand (2) forms drainage trough (11) with the outer dish (6) of main body.

2. miniature intraocular pressure actuator according to claim 1 is characterized in that the diameter of the conduction hole (3) of above-mentioned automatic control intraocular pressure is 0.2mm-0.25mm.

3. miniature intraocular pressure actuator according to claim 1, it is characterized in that being parallel to each other between the outer dish (6) of the isolation surface (8) of above-mentioned ligand (2) and main body (1), the gap that forms between them is the equal diameters of the width and the access hole (9) of drainage trough (11), value 0.2mm.

4. miniature intraocular pressure actuator according to claim 1 is characterized in that this intraocular pressure actuator preferably selects for use the makrolon material that adapts with the ocular tissue organism to make.