CN204319045U - A kind of aqueous humor drainage device for glaucoma - Google Patents
A kind of aqueous humor drainage device for glaucoma Download PDFInfo
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- CN204319045U CN204319045U CN201420744886.6U CN201420744886U CN204319045U CN 204319045 U CN204319045 U CN 204319045U CN 201420744886 U CN201420744886 U CN 201420744886U CN 204319045 U CN204319045 U CN 204319045U
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Abstract
This utility model relates to a kind of novel aqueous humor drainage device for glaucoma, is connected to form by drainage tube and drainage disc.Drainage tube fore-end has inverse lock construction, and drainage tube rear end part is connected with drainage disc by valve.The front end of drainage disc is provided with fixing hole, is provided with radial type trench, is provided with flow control device in groove from the drain mouth of pipe on drainage disc surface, drainage disc side is provided with side groove, side groove is connected with surface grooves, and drainage disc surface design has through-hole structure, and through hole is connected with surface grooves.Drainage disc has the two globoidal structure of class according to eyeball structure, drainage disc and eyeball is closely attached, improves and implant stability.This novel aqueous humor drainage device for glaucoma surface can arrange one deck medicament controlled-release coating.This glaucoma drainage device Operation good operability, has long-term drainage effect, effectively can control intraocular pressure in normal range.
Description
Technical field
This utility model relates to a kind of ophthalmic medical instrument, specifically a kind of novel aqueous humor drainage device for glaucoma, and this device is applicable to glaucoma, especially the treatment of some Refractory Glaucoma.
Background technology
Glaucoma is the great common oculopathy of a kind of hazardness, and it is blinding occupies second.For glaucomatous treatment, the most thorny with Refractory Glaucoma.The main cause Shi Shu district tissue fibering of its operative failure and insane trace are formed, and hinder drain and the diffusion of aqueous humor.For Refractory Glaucoma, Therapeutic Method conventional clinically at present implants aqueous humor drainage device.Its principle is the manual accesses setting up aqueous humor drainage and diffusion by the drain implanting anterior chamber, by aqueous humor drainage in conjunctiva-Tenon's capsule, thus reduces intraocular pressure.The structure of existing aqueous humor drainage device generally includes two parts: one is implant the drainage tube in anterior chamber, and two is explants; Drainage tube is responsible for by aqueous humor drainage to coupled explant place, and explant is positioned at conjunctiva-Tenon's capsule, has the drainage disc of definite shape and surface area.The aqueous humor drained forms an avascular filtering bleb in conjunctiva-Tenon's capsule, and then is recycled to whole body by various tissue tract (as lymphatic vessel) disperse.
Aqueous humor drainage device, can be divided into non-limiting aqueous humor drainage device and restricted aqueous humor drainage device according to whether having metering function.Non-limiting aqueous humor drainage device designs, as external Molteno, Schocket, Baerveldt and domestic HAD device etc. without pressure sensibility valve cell; And restricted aqueous humor drainage device has flow control device between drainage tube and explant, the unidirectional outflow under a certain pressure of restriction aqueous humor, makes intraocular pressure relatively controlled, as Ahmed, Krupin, Joseph, White and OpitMed etc.The complication that current implantation aqueous humor drainage device causes mainly contains: drainage tube is shifted, and shrinks back, deviates from; Drainage tube touches eye inner tissue, hyphema; Postoperative ocular hypotension, shallow of anterior chamber; Around drainage disc, disperse resistance causes inadequate drainage etc. greatly.For existing aqueous humor drainage device Problems existing, this utility model is intended designing a kind of novel aqueous humor drainage device, fix from drainage tube, drainage disc is fixed, start with and solve the problem, to realizing the object of long-term controlled even drain in drainage channel and the aspect such as hole foundation and flow control device.
Summary of the invention
In view of the many complication existed in the clinical characters of Refractory Glaucoma and the operation of existing aqueous humor drainage device, the purpose of this utility model is to overcome the deficiencies in the prior art, provides a kind of aqueous humor drainage device for glaucoma.
In order to realize above-mentioned task, this utility model takes following technical solution:
A kind of aqueous humor drainage device for glaucoma, the drainage tube comprising drainage disc and be connected with this drainage disc, its feature is, drainage trough is provided with at the outer surface of described drainage disc, fixed edge is provided with in the front end of this drainage disc and near the region of drainage tube, this fixed edge being provided with fixing hole, for being connected with aequator oculi sclera, being also provided with valve in the junction of described drainage disc and drainage tube.
Inverse lock construction is provided with in the front end of described drainage tube and away from the region of drainage disc.
Described inverse lock construction is symmetrically distributed in drainage tube both sides, forms arrow shaped structure together with drainage tube, and the rear portion of inverse lock construction is not connected with drainage tube.Not-connected status, in insertion cornea process, drainage wall can be close in inverse lock construction rear portion, and sectional area significantly reduces, and can recover original inverted triangle structure after insertion; If connection status, sectional area can not reduce how many during insertion, can increase Cat-in resisting force, and causes larger wound
Described inverse lock construction is a right angled triangle with 30 ° of angles, and wherein leg-of-mutton right angle is relative with drainage tube, and cross section is isosceles trapezoid, and from front to back, trapezoidal sectional area increases gradually.
Described drainage trough comprises the first drainage trough of being arranged on drainage disc upper surface and is arranged on this drainage disc side and the second drainage trough be communicated with this first drainage trough, the first described drainage trough with the center of described drainage trough for mid point radially distributes to its periphery.
Described drainage disc is also provided with through hole, and this through hole is connected with the first drainage trough, and the aqueous humor that the through hole of drainage disc up/down perforation contributes to flowing into drainage trough permeates into the back side of drainage disc as early as possible.
In the first described drainage trough, be also provided with flow control device, flow control device comprises the directivity projection of series of rules distribution.Drain effectively can be prevented excessively smooth, and and then cause shallow of anterior chamber.The size of the directivity projection of regular distribution, angle and riding position are that the hydrodynamic characters concrete according to aqueous humor drainage device calculates and determine, finally guarantee to realize best drain and disperse effect, can science, steadily, effectively control intraocular pressure.
Described fixing hole is axle centered by the straight-tube portion of drainage disc, and symmetrical is distributed on described fixed edge.
Described drainage disc is the two cambered surface disk-like structure of class that is circular, oval, square, trapezoidal, fan-shaped, pear shape, cambered surface curvature conforms to the scleral surface curvature of human eye, consistent bending sphere makes drainage disc and eyeball closely attach, and alleviates the stimulation to eyeball and surrounding eye socket tissue.
In use, the anterior wedge structure of inverse lock contributes to drainage tube and inserts anterior chamber, and the revolving structure at rear portion contributes to drainage tube and locks onto angle of anterior chamber, and inverse lock construction has elasticity, the arc that flexible one-tenth and angle of anterior chamber radian adapt; Latter half of not being connected with drainage tube of inverse lock helps be adjacent to drainage tube against being locked in insert in anterior chamber's process, and reduce resistance, once enter anterior chamber, inverse lock construction recovers natural form, the i.e. position of lockable drainage tube.
Described drainage disc lateral layout has drainage trough, and the drainage trough of side and the radial drainage trough of disc surfaces are interconnected.The drainage trough of side contributes to the aqueous humor disperse as early as possible drained, and reduces the pressure of the drain mouth of pipe.
Described valve is arranged at the position of described drainage disc near the drain mouth of pipe, and in door structure, when aqueous humor reaches certain pressure, valve can open drain waterproof automatically, when insufficient pressure is to resist the intrinsic tension force of valve, and valve closing.
Described fixed edge and drainage tube and drainage disc are combined closely, and can effectively fix drainage tube vertical with drainage disc, guarantee that drain is unimpeded.The fixing hole on fixed edge surface is convenient to whole drainage disc to be fixed on eye sclera surface, prevents from causing drain failure because drainage system is movable.Fixing hole is symmetrically distributed in drainage tube both sides can guarantee stress balance, improves drainage system long-time stability.
Described drainage system is made up of the biomaterial for medical purpose of medical grade silicon rubber or other softness.The material hardness of drainage system will be applicable to the hardness of ocular tissue, to reduce the implant surgery failure caused because the mechaanical property of materials is improper.
Except describing a kind of novel aqueous humor drainage device for glaucoma, this utility model also describes a kind of medicine carrying aqueous humor drainage device for glaucoma, specifically tissue scarring drug sustained release system can be suppressed to form by described novel aqueous humor drainage device for glaucoma and its surface of attachment, described drug sustained release system is by medicine, degradable polymer supported body and necessary sustained release rate regulator composition, the controlled-release coating being wherein distributed in drain notch decreases the cross-sectional area of drainage trough, and then hinder aqueous humor drainage, but along with the degraded gradually of carrier material in coating, coating layer thickness reduces, drainage trough cross section restores to the original state, drain inhibition disappears, therefore can say that this novel aqueous humor drainage device for glaucoma realizes certain flow control effect by notch controlled-release coating in early days in implantation, prevent the generation of the early stage shallow of anterior chamber of drain.
Compared with prior art, the beneficial effects of the utility model are:
(1) the inverse lock design of aqueous humor drainage device different from the past is adopted, solve drainage tube shrink back and the problem such as to deviate from, sclera in conjunction with drainage disc two fixing holes is fixed, effectively prevent the displacement of drainage tube and drainage disc, can prevent pipeline from touching eye inner tissue and causing corresponding complication in ocular movement process.
(2) by arranging side drainage channel and running through the hole of drainage disc to promote aqueous humor disperse, the problem of inadequate drainage is overcome
(3) for problems such as postoperative ocular hypotension and shallow of anterior chamber, described aqueous humor drainage device devises again flow control device, to realizing the object of long-term controlled even drain.
Accompanying drawing explanation
Fig. 1 is the front view of this utility model aqueous humor drainage device for glaucoma;
Fig. 2 is the right view of this utility model aqueous humor drainage device for glaucoma;
Fig. 3 is A-A cross-sectional view in Fig. 1;
Fig. 4 is B-B cross-sectional view in Fig. 1;
Fig. 5 is the partial enlarged drawing of valve in Fig. 1;
Fig. 6 is the using state figure that this utility model aqueous humor drainage device for glaucoma implants eyeball.
Detailed description of the invention
Below in conjunction with drawings and Examples, the operation principle of this utility model aqueous humor drainage device for glaucoma and construction features are described in further detail.
As Figure 1-4, aqueous humor drainage device is made up of drainage tube 10 and drainage disc 20, and both are formed by connecting by the straight-tube portion 12 of drainage tube and valve 27, and camera oculi anterior is implanted in drainage tube front end, and is fixed on room Angle Position by inverse lock construction 11.Drainage disc 20 surface is provided with valve 27 and radial drainage trough 21 from the drain mouth of pipe, and drainage trough is provided with flow control device 23 in (21); Drainage disc front end is provided with fixed edge 25, and fixed edge is symmetrical in drainage tube and is provided with two fixing holes 26, drainage disc is fixed on aequator oculi scleral surface by fixing hole 26.Except surperficial radial drainage trough 21, be also provided with drainage trough 22 in drainage disc 20 side, the drainage trough 22 of side is interconnected with the drainage trough 21 on surface; Also be provided with through hole 24 on drainage disc 20 surface, through hole is connected with the drainage trough 21 on surface.Drainage tube 10 and drainage disc 20 are all made up of medical grade silicon rubber material.Drainage tube internal diameter 0.3mm, external diameter 0.6mm, long 13.0mm; Inverse lock construction is a right angled triangle with 30 ° of angles, and wherein triangular right-angle is relative with drainage tube, and cross section is isosceles trapezoidal structure, and from front to back, trapezoid cross section is long-pending to increase gradually, natural transition.Drainage disc is oval structure, major axis 16.0mm, minor axis 13.0mm, thick 0.3-1.0mm, bends spherically (radius of curvature 12mm).The wide 0.5mm of the radial drainage trough 21 in surface, mean depth 0.2mm (drainage disc centre position groove depth, and peripheral part groove is shallow, side drain groove width 0.2mm, dark 0.2mm.The flow control device 23 be arranged at bottom surperficial radial drainage trough 21 is isoceles triangle body, the long 0.1mm of waist, bottom side length 0.05mm, waits central plane to contact with bottom drainage trough 21 with one.The through hole 24 diameter 0.5mm on drainage disc surface, 3, every side, distributes in equilateral triangle.Valve 27 is clamshell doors silica gel thin film structure, the shutoff drain mouth of pipe 13 under pressure-less state, and its length and width are consistent with drainage trough cross section, and thickness is 0.05mm.The wide 1.0mm of fixed edge 25 of drainage disc front end, long 8.0mm, thickness is 0.2mm, is distributed with the fixing hole 26 of diameter 0.5mm in its lateral symmetry, and fixing hole 26 is apart from fixed edge 25 Edge Distance at least 0.3mm.Surface drug controlled-release coating is 0.05mm at flattened region average thickness, can reach 0.08mm at radial drain notch position controlled-release coating average thickness, and coating can make drainage trough cross-sectional area reduce about 60%.
As shown in Figure 5, aqueous humor flows to through the drainage tube 10 implanting anterior chamber the valve 27 be located on drainage disc 20, when aqueous humor pressure is enough large, valve 27 is opened and is introduced in radial drainage trough 21 by aqueous humor, whole drainage disc 20 is permeated into rapidly again further by through hole 24 and side drainage trough 22, the flow control device 23 be wherein distributed in bottom drainage trough 21 effectively can regulate and control aqueous humor and be uniformly distributed in whole drainage system, afterwards gradually absorb by surrounding connective tissue.
As illustrated in fig. 1 and 2, the inverse lock construction of drainage tube front portion can effectively be locked in angle, room when not increasing operating difficulty, and fixing drainage tube is not deviate from.The drainage tube comprising inverse lock construction is embedded in angle of anterior chamber by anterior wedge structure through limbus of corneae operative incision, and inverse lock construction rear portion arc plane is parallel with iris: drainage tube is walked to walk to ambitus along meridian direction in eyeball scleral surface.Owing to there being higher pressure in anterior chamber, aqueous humor enters drainage tube by under the effect of pressure differential, and flows to the drainage disc with flow control device.
In sum; by above-mentioned embodiment; applicant is own has made detailed description to the structure of aqueous humor drainage device described in the utility model; various conversion and improvement can be made on this basis; as material, structure, specification and flow control device etc.; if but these changes and improvements do not depart from basic concept of the present invention, all should at the protection domain of claims of the present invention.
Claims (9)
1. an aqueous humor drainage device for glaucoma, the drainage tube (10) comprising drainage disc (20) and be connected with this drainage disc (20), it is characterized in that, drainage trough is provided with at the outer surface of described drainage disc (20), in the front end of this drainage disc (20), and be provided with fixed edge near the region of drainage tube (10), on this fixed edge, centered by drainage tube (10), axial symmetry is provided with fixing hole (26), for being connected with aequator oculi sclera, valve (27) is also provided with at described drainage disc (20) and the junction of drainage tube (10).
2. aqueous humor drainage device for glaucoma as claimed in claim 1, is characterized in that, is provided with inverse lock construction (11) in the front end of described drainage tube (10) and away from the region of drainage disc (20).
3. aqueous humor drainage device for glaucoma as claimed in claim 2, it is characterized in that, described inverse lock construction (11) is symmetrically distributed in drainage tube (10) both sides, form arrow shaped structure together with drainage tube, the rear portion of inverse lock construction (11) is not connected with drainage tube (10).
4. aqueous humor drainage device for glaucoma as claimed in claim 3, it is characterized in that, described inverse lock construction (11) is a right angled triangle with 30 ° of angles, wherein leg-of-mutton right angle is relative with drainage tube, cross section is isosceles trapezoid, and from front to back, trapezoidal sectional area increases gradually.
5. aqueous humor drainage device for glaucoma as claimed in claim 1, it is characterized in that, described drainage trough comprises the first drainage trough (21) of being arranged on drainage disc (20) upper surface and is arranged on this drainage disc (20) side and the second drainage trough (22) be communicated with this first drainage trough (21), described the first drainage trough (21) with the center of described drainage trough for mid point radially distributes to its periphery.
6. aqueous humor drainage device for glaucoma as claimed in claim 5, it is characterized in that, described drainage disc (20) is also provided with through hole (24), and this through hole is connected with the first drainage trough (21).
7. aqueous humor drainage device for glaucoma as claimed in claim 5, is characterized in that, in described the first drainage trough (21), be also provided with flow control device (23), and flow control device comprises the directivity projection of series of rules distribution.
8. aqueous humor drainage device for glaucoma as claimed in claim 1, it is characterized in that, described valve (27) is arranged at the position of described drainage disc near the drain mouth of pipe (13), in door structure.
9. aqueous humor drainage device for glaucoma as claimed in claim 1, it is characterized in that, described drainage disc (20) is the two cambered surface disk-like structure of class that is circular, oval, square, trapezoidal, fan-shaped, pear shape, and cambered surface curvature conforms to the scleral surface curvature of human eye.
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420744886.6U CN204319045U (en) | 2014-12-01 | 2014-12-01 | A kind of aqueous humor drainage device for glaucoma |
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| Application Number | Priority Date | Filing Date | Title |
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| CN201420744886.6U CN204319045U (en) | 2014-12-01 | 2014-12-01 | A kind of aqueous humor drainage device for glaucoma |
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| CN204319045U true CN204319045U (en) | 2015-05-13 |
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Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109172129A (en) * | 2018-09-29 | 2019-01-11 | 王丽强 | Glaucoma Valve drainage device |
| CN110037854A (en) * | 2019-03-29 | 2019-07-23 | 温州医科大学附属眼视光医院 | A kind of aqueous humor drainage device for glaucoma and Aqueous Humor of Glaucomas drainage method |
| CN111295164A (en) * | 2017-10-23 | 2020-06-16 | 株式会社都可耐 | Implant and implant system |
| CN111548627A (en) * | 2020-05-22 | 2020-08-18 | 复旦大学附属眼耳鼻喉科医院 | Intelligent anti-tissue-adhesion polymer composite material, anti-tissue-adhesion aqueous humor drainage device and preparation method thereof |
| CN111544196A (en) * | 2020-04-16 | 2020-08-18 | 上海昊海生物科技股份有限公司 | Glaucoma aqueous humor drainage device and preparation method thereof |
| CN114432034A (en) * | 2021-12-22 | 2022-05-06 | 山东百多安医疗器械股份有限公司 | Degradable polylactic acid glaucoma drainage tube |
-
2014
- 2014-12-01 CN CN201420744886.6U patent/CN204319045U/en active Active
Cited By (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111295164A (en) * | 2017-10-23 | 2020-06-16 | 株式会社都可耐 | Implant and implant system |
| CN111295164B (en) * | 2017-10-23 | 2022-07-01 | 株式会社都可耐 | Implant and implant system |
| CN109172129A (en) * | 2018-09-29 | 2019-01-11 | 王丽强 | Glaucoma Valve drainage device |
| CN110037854A (en) * | 2019-03-29 | 2019-07-23 | 温州医科大学附属眼视光医院 | A kind of aqueous humor drainage device for glaucoma and Aqueous Humor of Glaucomas drainage method |
| CN110037854B (en) * | 2019-03-29 | 2021-04-20 | 温州医科大学附属眼视光医院 | Glaucoma aqueous humor drainage device |
| CN111544196A (en) * | 2020-04-16 | 2020-08-18 | 上海昊海生物科技股份有限公司 | Glaucoma aqueous humor drainage device and preparation method thereof |
| CN111548627A (en) * | 2020-05-22 | 2020-08-18 | 复旦大学附属眼耳鼻喉科医院 | Intelligent anti-tissue-adhesion polymer composite material, anti-tissue-adhesion aqueous humor drainage device and preparation method thereof |
| CN114432034A (en) * | 2021-12-22 | 2022-05-06 | 山东百多安医疗器械股份有限公司 | Degradable polylactic acid glaucoma drainage tube |
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| TR01 | Transfer of patent right |
Effective date of registration: 20230823 Address after: 201600 No.5 Dongjing Road, Songjiang Industrial Zone, Songjiang District, Shanghai Patentee after: SHANGHAI HAOHAI BIOLOGICAL TECHNOLOGY Co.,Ltd. Address before: 200031 No. 83, Xuhui District, Shanghai, Fenyang Road Patentee before: EYE, EAR, NOSE, AND THROAT HOSPITAL OF FUDAN University |
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| TR01 | Transfer of patent right |