CN203107195U - Tear duct plug - Google Patents
Tear duct plug Download PDFInfo
- Publication number
- CN203107195U CN203107195U CN 201320045512 CN201320045512U CN203107195U CN 203107195 U CN203107195 U CN 203107195U CN 201320045512 CN201320045512 CN 201320045512 CN 201320045512 U CN201320045512 U CN 201320045512U CN 203107195 U CN203107195 U CN 203107195U
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- Prior art keywords
- tear
- tears
- liquid storing
- storing cavity
- capillary
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Abstract
The utility model discloses a tear duct plug which comprises a fixing part, a liquid storing cavity and a capillary detaining pipe. One end of the liquid storing cavity is communicated with a center hole of the fixing part. The other end of the liquid storing cavity is communicated with a center hole of the capillary detaining pipe. The wall of the liquid storing cavity can deform in an elastic mode when being pressed. According to the tear duct plug, the wall of the liquid storing cavity can deform in the elastic mode when being pressed, after a tear duct is implanted, the elasticity of the wall of the liquid storing cavity can prevent the tear duct plug from falling backwards in the tear duct, structure is simple, machining is convenient, and cost is low. When the number of tears is small, the tears in the capillary detaining pipe have a detaining or blocking effect, tear content in an eye socket is guaranteed, when the number of tears in the eye socket exceeds normal number, the tears in the liquid storing cavity form certain forward direction differential pressure, the tears are pushed to flow out of the capillary detaining pipe, the tears flow into a nasolacrimal duct and then are discharged from a nasal cavity, accordingly automatic adjusting of the tear number is achieved, and lacrimation of a patient is avoided.
Description
Technical field
This utility model relates to a kind of lacrimal duct plug.
Background technology
The angle conjunctival xerosis is commonly called as " xerophthalmia ", refers to that tear matter that any reason causes or amount are unusual or kinetics is unusual, causes the tear membrane stability to descend, and with ophthalmic uncomfortable and (or) general name of the multiple disease of eye table organization characteristics of lesion.Replacement therapy is the main method for the treatment of the angle conjunctival xerosis at present, namely takes artificial tears's alternative medicine and hormone eye water.Artificial tears's alternative medicine needs long-term even lifelong medication, and the additive that the artificial tears reaches wherein can increase the weight of the state of an illness; And use hormone to have the danger of bringing out severe complication, its toxic and side effects is very tangible.
Also having a kind of method is to block tear stains by implanting lacrimal duct plug, and lacrimal duct plug can be preserved patient self tear, thereby reduces artificial tears's consumption, avoids above-mentioned toxic and side effects.The excretion pathway of normal tear mainly is to drain into nasal cavity by lacrimal passage, and small part disappears by evaporation.The weak point of this method is: though most angles conjunctival xerosis patient oligodacrya, the amount that reduces still can not be by the evaporation complete obiteration, if the total blockage lacrimal passage will cause patient to shed tears.
Chinese patent literature CN201220261398.0 provides " a kind of nasolacrimal duct cap of automatic adjusting tear amount and lay instrument ", one end of cap is the fixing ring flange of usefulness, the other end is the round end taper, there are several annular ridge projections in the stage casing, the cap center has axial capillary retention pipe and fluid reservoir, and an end of capillary retention pipe is that the evagination taper seat is connected with fluid reservoir.This cap can carry out dynamic adjustment automatically, alleviating dry eye disease symptom to the tear amount in the eye socket.Though this cap can carry out dynamic adjustment automatically to the tear amount in the eye socket, avoids stopping up and causes tear stains and cause patient to shed tears, the shape of this cap is too complicated, so processing technique is very complicated, and processing cost is higher.
The utility model content
Technical problem to be solved in the utility model provides a kind of simple in structure, easy to process, the lacrimal duct plug lacrimal duct plug that can regulate the tear amount automatically that processing cost is low, avoids causing patient to shed tears.
In order to solve the problems of the technologies described above, technical scheme provided by the utility model is: a kind of lacrimal duct plug comprises fixed part, liquid storage cylinder and capillary retention pipe; One end of described liquid storage cylinder is communicated with the centre bore of fixed part, and the other end is communicated with the centre bore of capillary retention pipe; Strain can take place in the chamber wall of described liquid storage cylinder when being under pressure.
A kind of lacrimal duct plug, the length L when it is not stressed are 4mm ± 1mm.
The diameter D1 of the centre bore of described fixed part is 0.5mm to 0.8mm.
Maximum dimension D 2 when described liquid storage cylinder is not stressed is 0.8mm to 1.2mm.
The diameter D3 of the centre bore of described capillary retention pipe is 0.1mm to 0.3mm.
After having adopted technique scheme, the utlity model has following beneficial effect: strain can take place in the chamber wall of liquid storage cylinder of the present utility model when being under pressure, after implanting tear stains, the elastic force of the chamber wall of liquid storage cylinder can prevent that lacrimal duct plug from coming off backward in tear stains, simple in structure, easy to process, cost is low.When tear is few, tear in the capillary retention pipe plays the effect of viscous flow or shutoff, guarantee the tear content in the eye socket, after tear in the eye socket surpasses normal amount, tear in the liquid storage cylinder forms certain forward pressure reduction, promotes tear and flows out the capillary retention pipe, is discharged by nasal cavity after making tear flow into nasolacrimal duct, thereby realize the automatic adjusting to the tear amount, avoid causing patient to shed tears.
Description of drawings
Content of the present utility model is easier to be expressly understood in order to make, and according to specific embodiment also by reference to the accompanying drawings, this utility model is described in further detail, wherein below
Fig. 1 is structural representation of the present utility model.
Label in the accompanying drawing is:
Fixed part 1, liquid storage cylinder 2, capillary retention pipe 3;
The lacrimal duct plug length L;
Fixed part center-hole diameter D1, the maximum dimension D when liquid storage cylinder is not stressed 2, capillary retention tube hub bore dia D3.
The specific embodiment
(embodiment 1)
See Fig. 1, the lacrimal duct plug of present embodiment, the length L when it is not stressed is 4mm ± 1mm, comprises fixed part 1, liquid storage cylinder 2 and capillary retention pipe 3.
One end of liquid storage cylinder 2 is communicated with the centre bore of fixed part 1, and the other end is communicated with the centre bore of capillary retention pipe 3.Strain can take place in the chamber wall of liquid storage cylinder 2 when being under pressure.The diameter D1 of the centre bore of fixed part 1 is 0.5mm to 0.8mm.Maximum dimension D 2 when liquid storage cylinder 2 is not stressed is 0.8 to 1.2mm.The diameter D3 of the centre bore of capillary retention pipe 3 is 0.1 to 0.3mm.
Because the chamber wall of liquid storage cylinder 2 when being under pressure strain can take place, therefore after the lacrimal duct plug of present embodiment was implanted tear stains, the elastic force of the chamber wall of liquid storage cylinder 2 can prevent that lacrimal duct plug from coming off backward in tear stains.After tear entered liquid storage cylinder 2, capillary retention pipe 3 can be with in the tear suction tube.When tear was few, the tear in the capillary retention pipe 3 played the effect of viscous flow or shutoff, guarantees the tear content in the eye socket.After tear in the eye socket surpassed normal amount, the tear in the liquid storage cylinder 2 formed certain forward pressure reduction, promoted tear and flowed out capillary retention pipe 3, was discharged by nasal cavity after making tear flow into nasolacrimal duct, thereby realized automatic adjusting to the tear amount, avoided causing patient to shed tears.
Above-described specific embodiment; the purpose of this utility model, technical scheme and beneficial effect are further described; institute is understood that; the above only is specific embodiment of the utility model; be not limited to this utility model; all within spirit of the present utility model and principle, any modification of making, be equal to replacement, improvement etc., all should be included within the protection domain of the present utility model.
Claims (5)
1. a lacrimal duct plug is characterized in that: comprise fixed part (1), liquid storage cylinder (2) and capillary retention pipe (3); One end of described liquid storage cylinder (2) is communicated with the centre bore of fixed part (1), and the other end is communicated with the centre bore of capillary retention pipe (3); Strain can take place in the chamber wall of described liquid storage cylinder (2) when being under pressure.
2. a kind of lacrimal duct plug according to claim 1, it is characterized in that: the length L when it is not stressed is 4mm ± 1mm.
3. a kind of lacrimal duct plug according to claim 1, it is characterized in that: the diameter D1 of the centre bore of described fixed part (1) is 0.5mm to 0.8mm.
4. a kind of lacrimal duct plug according to claim 1 is characterized in that: the maximum dimension D 2 of described liquid storage cylinder (2) when not being stressed is 0.8mm to 1.2mm.
5. a kind of lacrimal duct plug according to claim 1, it is characterized in that: the diameter D3 of the centre bore of described capillary retention pipe (3) is 0.1mm to 0.3mm.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201320045512 CN203107195U (en) | 2013-01-25 | 2013-01-25 | Tear duct plug |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201320045512 CN203107195U (en) | 2013-01-25 | 2013-01-25 | Tear duct plug |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN203107195U true CN203107195U (en) | 2013-08-07 |
Family
ID=48887581
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 201320045512 Expired - Fee Related CN203107195U (en) | 2013-01-25 | 2013-01-25 | Tear duct plug |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN203107195U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110840650A (en) * | 2019-11-14 | 2020-02-28 | 镇江市第一人民医院 | Lacrimal duct embolism introducer |
-
2013
- 2013-01-25 CN CN 201320045512 patent/CN203107195U/en not_active Expired - Fee Related
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110840650A (en) * | 2019-11-14 | 2020-02-28 | 镇江市第一人民医院 | Lacrimal duct embolism introducer |
| CN110840650B (en) * | 2019-11-14 | 2022-08-26 | 镇江市第一人民医院 | Lacrimal duct embolism introducer |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20130807 Termination date: 20190125 |