CN212369160U

CN212369160U - Sclera internal fixation aqueous humor drainage device

Info

Publication number: CN212369160U
Application number: CN201821008167.2U
Authority: CN
Inventors: 吴莺
Original assignee: Individual
Current assignee: Individual
Priority date: 2018-06-28
Filing date: 2018-06-28
Publication date: 2021-01-19
Anticipated expiration: 2028-06-28

Abstract

The utility model relates to an ophthalmologic medical apparatus, in particular to a drainage device for fixing aqueous humor in sclera; comprises a drainage tube and a drainage tray; peg graft in the room angle of eyeball through the drainage tube, with the inside unnecessary aqueous humor drainage of eyeball to drainage dish, drainage groove drainage to spacing flange department on through the drainage dish, because spacing flange inlays to establish the incision department at the sclera and prevents the sclera healing, consequently, there is the clearance between sclera incision and the spacing flange, the clearance discharge between unnecessary aqueous humor accessible sclera incision and the spacing flange, thereby effective control eye pressure is in normal range, need not additionally set up the valve and control the drainage volume, thereby the cost of manufacture has been reduced, because the drainage dish is buried underground in the pocket of sclera, and spacing flange inlays to establish in incision department, spacing flange still plays the effect of location, compare traditional direct mount at the aqueous humor drainage device on scleral surface, the structure is more firm, difficult emergence skew or drop.

Description

Sclera internal fixation aqueous humor drainage device

Technical Field

The utility model relates to an ophthalmologic medical apparatus, in particular to a drainage device for fixing aqueous humor in sclera.

Background

Glaucoma is a common highly dangerous ophthalmic disease with a risk of blindness; glaucoma is primarily caused by increased intraocular pressure due to poor drainage of aqueous humor from the eye and eventually blindness due to optic atrophy. For the treatment of glaucoma, the current treatment method commonly used at home and abroad is filtration surgery, but a scleral flap needs to be manufactured in the surgery, and the steps are complicated. The drainage device is changed into an implanted drainage device for simplifying the operation steps clinically, so various drainage devices are invented, such as an Ahmed drainage valve, a Hoskins-Drake butterfly wing-shaped aqueous humor drainage device, an OptiM ed glaucoma pressure regulator and the like, and basically comprise a drainage tube and a drainage valve, a disc or a regulator which are connected with the drainage tube. The disadvantage of this kind of device is that the valve body is great, need to open great conjunctival incision just can implant, has changed eyeball surface topography, and eyeball fascia tissue damage is great, and with time and eyeball motion, the valve body or suture have the exposure risk, and if the patient takes place the other symptoms that the retina breaks away from, bulky external drainage device will bring inconvenience for relevant treatment.

Chinese patent No. CN204319045U discloses a glaucoma aqueous humor drainage device, which comprises a drainage tray and a drainage tube connected to the drainage tray, wherein the drainage tray is fixed on the surface of sclera at the equator of the eyeball through a fixing hole, the defect of this operation mode is similar to the drainage device, the displacement and falling off of the drainage tray are easily caused, and the drainage amount of aqueous humor needs to be controlled by a valve, the structure of the drainage device is complex, and the cost is high.

SUMMERY OF THE UTILITY MODEL

The utility model discloses the technical problem that will solve is: the intrascleral fixed aqueous humor drainage device has the advantages of low cost, small volume, convenient and fast minimally invasive operation and low possibility of falling off, combines the advantages of the filtration operation and the drainage device, abandons the step of manufacturing a scleral flap in the filtration operation, and avoids the defects of changing the topography of the eyeball surface, damaging the fascia and the like caused by implanting the drainage device into a large incision.

In order to solve the technical problem, the utility model discloses a technical scheme be:

a minimally invasive intrascleral fixed aqueous humor drainage device comprises a drainage tube and a drainage disc;

one end of the drainage tube is inserted into the chamber corner of the eyeball, and the other end of the drainage tube is connected to the drainage disc;

the drainage tray is provided with a limiting flange and more than one drainage groove; one end of the drainage groove is connected with the drainage tube, and the other end of the drainage groove is connected with the limiting flange.

The beneficial effects of the utility model reside in that: the utility model provides an in the sclera internal fixation aqueous humor drainage device structure, peg graft in the chamber angle of eyeball through the drainage tube, with the unnecessary aqueous humor drainage of eyeball to drainage dish, drainage to spacing flange department through the drainage groove on the drainage dish, because spacing flange inlays to establish the incision department at the sclera and prevents the sclera healing, consequently there is the clearance between sclera incision and the spacing flange, and along with the wound healing, aqueous humor discharges and will obtain dynamic balance, unnecessary aqueous humor can discharge through the clearance between sclera incision and the spacing flange, through the ocular fascia on sclera surface, conjunctival tissue heal synthetic functional filtration bubble, thereby effective control eye presses in normal range, do not need additionally to set up the valve to control the drainage volume, existing traditional advantage of filtering operation, saved the step of making the scleral flap in traditional filtering operation again, avoided the operation incision that the drainage ware was implanted to the scleral surface simultaneously big and changed shortcomings such as eyeball surface topography, simple structure and low cost. Because the drainage dish is buried underground in the pocket of sclera, and limit flange inlays to be established in incision department, and limit flange still plays the effect of location, compares traditional direct mount at the surperficial aqueous humor drainage device of sclera, and the structure is more firm, if because of the unskilled sclera pocket preparation that leads to of art person is too big, also only need 10-0 suture a stitch in the locating hole fixed can. The shift or the falling off is not easy to occur.

Drawings

FIG. 1 is a schematic view of a drainage device for intrascleral immobilization of aqueous humor according to an embodiment of the present invention;

fig. 2 is a schematic structural view of an intra-scleral immobilization aqueous humor drainage device according to an embodiment of the present invention installed on an eyeball;

description of reference numerals:

1. a drainage tube; 2. a drainage tray; 21. a connector; 22. chamfering; 23. a drainage groove; 231. a main tank; 232. a shunt slot; 24. positioning the through hole; 3. and a limiting flange.

Detailed Description

In order to explain the technical content, the objects and the effects of the present invention in detail, the following description is made with reference to the accompanying drawings in combination with the embodiments.

The utility model discloses the most crucial design lies in: the drainage device is small in size, is suitable for minimally invasive surgery, can be fixed in the sclera by matching with the sclera pocket technology invented by an operator, reduces eye surface stimulation and eye surface topography change, is inserted in the corner of an eyeball through the drainage tube, drains redundant aqueous humor in the eyeball to the drainage disc, drains to the position-limiting flange through the drainage groove on the drainage disc, and prevents the sclera from healing because the position-limiting flange is embedded at the incision part of the sclera, thereby ensuring that the aqueous humor is drained to the gap between the surface layer of the sclera and the subconjunctival space. After operation, the functional filtering bleb is healed by the ocular fascia and conjunctival tissues on the surface of the sclera, thereby effectively controlling the intraocular pressure within a normal range.

Referring to fig. 1 and 2, the utility model discloses a drainage device for fixing aqueous humor in sclera, which comprises a drainage tube 1 and a drainage disc 2;

one end of the drainage tube 1 is inserted into the chamber corner of the eyeball, and the other end is connected with the drainage disc 2;

the drainage plate 2 is provided with a limiting flange 3 and more than one drainage groove 23; one end of the drainage groove 23 is connected with the drainage tube 1, and the other end is connected with the limiting flange 3.

Instructions for use of the intrascleral immobilization aqueous humor drainage device described above: cutting a strip-shaped incision which is about 2mm parallel to the limbus on the scleral surface 4-6mm behind the limbus of the eyeball by adopting a scleral tunnel knife, inserting the scleral tunnel knife into the incision in a manner of being parallel to the scleral plane, cutting a scleral pocket in front of and behind the incision, manufacturing a scleral interlayer sneak tunnel on one side of the pocket facing the cornea, leading the scleral interlayer sneak tunnel to an anterior chamber angle for leading a drainage tube to pass through, embedding a drainage disc 2 connected with the drainage tube 1 into the scleral pocket through the incision, and inserting the drainage disc into the chamber angle of the eyeball along a prefabricated; the limiting flange 3 on the drainage disc 2 is embedded at the incision of the sclera and plays a role in preventing the sclera from healing.

In the structure of the intrascleral fixed aqueous humor drainage device, the drainage tube 1 is inserted into the chamber angle of the eyeball to drain redundant aqueous humor inside the eyeball to the drainage disc 2 and drain the aqueous humor to the position of the limiting flange 3 through the drainage groove 23 on the drainage disc 2, because the limiting flange 3 is embedded in the incision part of the sclera to prevent the sclera from healing, a gap exists between the sclera incision and the limiting flange 3, the redundant aqueous humor can be discharged through the gap between the sclera incision and the limiting flange 3, thereby effectively controlling the eye pressure in a normal range, and controlling the drainage amount without additionally arranging a valve, thereby reducing the manufacturing cost, because the drainage disc 2 is embedded in the pocket of the sclera, and the limiting flange 3 is embedded in the incision part, the limiting flange 3 also plays a role in positioning, compared with the traditional aqueous humor drainage device directly installed on the surface of the sclera, the structure is more stable, and the damage of minimally invasive surgery is small, the shift or the falling off is not easy to occur. Due to the leakage of the aqueous humor out of the limiting flange, a functional filtering bubble is formed on the surface of the limiting flange along with the healing after the operation.

Furthermore, in the structure of the aqueous humor drainage device fixed in the sclera, the joint of the drainage disk 2 and the drainage tube 1 is provided with a connector 21, and the outer surface of the connector 21 is provided with inverted teeth 22.

Drainage dish 2 makes drainage tube 1 and drainage dish 2 be connected more firm through set up pawl 22 and drainage tube 1 inner wall connection at connector 21, avoids droing.

Furthermore, in the structure of the aqueous humor drainage device fixed in the sclera, the drainage disc 2 is elliptical, and the maximum diameter is not more than 2 mm.

Oval-shaped drainage dish 2 is more convenient when installing the operation of entering sclera pocket, and usable tissue elasticity slides in sclera pocket, reduces aqueous humor drainage device's the installation degree of difficulty.

Furthermore, in the structure of the aqueous humor drainage device fixed in the sclera, the edge of the drainage disk 2 is provided with an arc chamfer.

The edge of the drainage disc 2 is provided with an arc chamfer, so that the injury of the sclera caused by the drainage disc 2 during installation or use is reduced.

Further, in the drainage device structure for intrascleral fixation of aqueous humor, the drainage groove 23 includes a main groove 231 and more than two diversion grooves 232 communicated with the main groove 231, the initial end of the main groove 231 is communicated with the drainage tube 1, the other end of the main groove 231 is connected to one end of the diversion grooves 232, and the other end of the diversion grooves 232 is connected to the limiting flange 3.

Drainage to limiting flange 3 department through many flow distribution grooves 232 makes the aqueous humor more evenly flow out through the gap between limiting flange 3 and the sclera incision.

Furthermore, in the above structure of the intrascleral fixed aqueous humor drainage device, the number of the flow distribution grooves 232 is 4.

Furthermore, in the structure of the aqueous humor drainage device fixed in the sclera, the limiting flange 3 is in a straight strip shape.

Because the limiting flange 3 needs to be embedded at the sclera incision, the limiting flange 3 is designed into a straight strip shape, and the operation of the operation can be simplified.

Furthermore, in the structure of the drainage device for fixing aqueous humor in the sclera, the drainage disk 2 is provided with the positioning through holes 24, so that when an operator is unskilled in operation, the pocket can be made too large, and the drainage disk can be fixed by sewing 1 needle by 10-0 suture through the positioning through holes.

The auxiliary fixing of the drainage tray 2 can be performed through the positioning through holes 24 on the drainage tray 2, and the deviation or falling off of the drainage tray 2 during use is further avoided.

Further, in the above-mentioned sclera internal fixation aqueous humor drainage device structure, the material of drainage tube 1 is silica gel, the external diameter of drainage tube 1 is 400um, the internal diameter of drainage tube 1 is 50 um.

Furthermore, in the structure of the aqueous humor drainage device fixed in the sclera, the height of the limiting flange 3 is 300 um.

Furthermore, in the structure of the aqueous humor drainage device fixed in the sclera, the height of the limiting flange is 10-100 um.

Example 1

A drainage device for fixing aqueous humor in sclera comprises a drainage tube 1 and a drainage disc 2; one end of the drainage tube 1 is inserted into the chamber corner of the eyeball, and the other end is connected with the drainage disc 2; the drainage plate 2 is provided with a limiting flange 3 and more than one drainage groove 23; one end of the drainage groove 23 is connected with the drainage tube 1, and the other end is connected with the limiting flange 3. The junction of drainage disk 2 and drainage tube 1 is equipped with connector 21, the surface of connector 21 is equipped with pawl 22. The shape of the drainage tray 2 is an ellipse. And the edge of the drainage disc 2 is provided with an arc chamfer. The drainage groove 23 comprises a main groove 231 and 4 branch grooves 232 communicated with the main groove 231, the initial end of the main groove 231 is communicated with the drainage tube 1, the other end of the main groove 231 is connected to one end of the branch groove 232, and the other end of the branch groove 232 is connected to the limiting flange 3. The limiting flange 3 is straight. And a positioning through hole 24 is arranged on the drainage disc 2. Drainage tube 1's material is silica gel, drainage tube 1's external diameter is 400um, drainage tube 1's internal diameter is 50 um. The height of the limiting flange 3 is 300 um. The height of the limiting flange is 10-100 um.

To sum up, in the structure of the sclera internal fixation aqueous humor drainage device provided by the utility model, the drainage tube is inserted into the chamber angle of the eyeball, the redundant aqueous humor inside the eyeball is drained to the drainage disc, the drainage tube is drained to the position-limiting flange through the drainage groove on the drainage disc, because the position-limiting flange is embedded in the incision part of the sclera to prevent the sclera from healing, a gap exists between the sclera incision and the position-limiting flange, the redundant aqueous humor can be drained through the gap between the sclera incision and the position-limiting flange, and a functional filtering bubble is formed under the conjunctiva, thereby effectively controlling the eye pressure in a normal range, and needing no extra valve to control the drainage quantity, thereby reducing the manufacturing cost, because the drainage disc is embedded in the pocket of the sclera, and the position-limiting flange is embedded in the incision part, the position-limiting flange also plays a role of positioning, compared with the traditional aqueous humor drainage device directly installed on the surface of the sclera, the structure is more firm, and difficult emergence skew or drop have compromise traditional advantage of filtering operation and external drainage device, and abandon the two shortcoming for anti glaucoma operation wicresoft is convenient.

The above mentioned is only the embodiment of the present invention, and not the limitation of the patent scope of the present invention, all the equivalent transformations made by the contents of the specification and the drawings, or the direct or indirect application in the related technical field, are included in the patent protection scope of the present invention.

Claims

1. A drainage device for fixing aqueous humor in a sclera is characterized by comprising a drainage tube and a drainage disc;

2. The intrascleral fixed aqueous humor drainage device of claim 1, wherein a connector is disposed at the connection between the drainage plate and the drainage tube, and inverted teeth are disposed on the outer surface of the connector.

3. The episcleral fixed aqueous humor drainage device of claim 1, wherein the drainage disk is oval in shape.

4. The episcleral fixation aqueous humor drainage device of claim 3, wherein the edge of the drainage tray is provided with a rounded chamfer.

5. The intrascleral fixed aqueous humor drainage device of claim 1, wherein the drainage groove comprises a main groove and more than two diversion grooves communicated with the main groove, the initial end of the main groove is communicated with the drainage tube, the other end of the main groove is connected to one end of the diversion grooves, and the other end of the diversion grooves is connected to the limiting flange.

6. The episcleral fixation aqueous humor drainage device of claim 5, wherein the number of shunt grooves is 4.

7. The episcleral fixation aqueous humor drainage device of claim 1, wherein the stop flange is straight in shape.

8. The intrascleral fixed aqueous humor drainage device of claim 1, wherein the drainage plate is provided with positioning holes.

9. The intrascleral fixed aqueous humor drainage device of claim 1, wherein the drainage tube is made of silica gel, the outer diameter of the drainage tube is 400um, and the inner diameter of the drainage tube is 50 um.

10. The episcleral fixation aqueous humor drainage device of claim 1, wherein the height of the stop flange is 10-100 um.