CN201164536Y - Artificial dacryosolen - Google Patents
Artificial dacryosolen Download PDFInfo
- Publication number
- CN201164536Y CN201164536Y CNU2008200058905U CN200820005890U CN201164536Y CN 201164536 Y CN201164536 Y CN 201164536Y CN U2008200058905 U CNU2008200058905 U CN U2008200058905U CN 200820005890 U CN200820005890 U CN 200820005890U CN 201164536 Y CN201164536 Y CN 201164536Y
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- China
- Prior art keywords
- duct
- thin segment
- segment
- connecting portion
- draught line
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Abstract
The utility model discloses an artificial lacrimal duct, which comprises a flexible duct body and a leading wire, wherein, the duct body comprises a thick segment with the external diameter of 1.5 to 2.5 mm and a thin segment with the external diameter of 0.8 to 1.5 mm; a transactional segment with a gradually-changed diameter is arranged between the thick segment and the thin segment; a plurality of through holes are arranged on the duct wall of the duct body for forming flow leading holes; the diameter of the leading wire is smaller than that of the thin segment of the duct body, and the leading wire is connected with the connection part at the end of the thin segment of the duct body. The artificial lacrimal duct can be used for treating blockage of the lacrimonasal duct and the lacrimal duct or heavy narrowness, and has convenient operation.
Description
Technical field
This utility model relates to a kind of medical apparatus and instruments, is a kind of artificial tear duct that is used for obstructed lacrimal passage treatment usefulness specifically.
Background technology
Obstructed lacrimal passage is the commonly encountered diseases and the frequently-occurring disease of ophthalmology, at present often adopts artificial tear duct to treat, but present artificial tear duct is being used for nasolacrimal duct and is stopping up or during severe stenosis, effect is unsatisfactory with lacrimal ductule.
The utility model content
The purpose of this utility model is to provide a kind of artificial tear duct, can be used for nasolacrimal duct and stops up or the treatment of severe stenosis with lacrimal ductule.
This utility model adopts following technical scheme: a kind of artificial tear duct, comprise flexible pipe body and draught line, body comprises that external diameter is that thick section of 1.5～2.5mm and external diameter are the thin segment of 0.8～1.5mm, the changeover portion that Diameter Gradual Change is arranged between thick section and the thin segment, the tube wall of body is provided with a plurality of through holes and forms conduction holes, and described draught line diameter is less than the body thin segment and be connected on the connecting portion of body thin segment end.
Artificial tear duct of the present utility model is made of flexible pipe body and draught line, and body comprises thick section and thin segment, thick section can be inserted and be used in the nasolacrimal duct stopping up or narrow nasolacrimal duct is expanded and supported, thin segment is used for lacrimal ductule is expanded and supported, and the effect of drain tear is promptly arranged after inserting, and does not influence patient's outward appearance, can obviously alleviate the painful and inconvenient of patient, and, made things convenient for the implantation of artificial tear duct owing to adopted draught line, reduced the difficulty of implant surgery.Can be used for following indication: 1. obstruction of lacrimal canaliculus and, 2. obstruction of lacrimal canaliculus and, 3. lacrimal ductule severe stenosis and with obstruction of naso lacrimal duct with the nasolacrimal duct severe stenosis with obstruction of naso lacrimal duct.
Description of drawings
Fig. 1 is the structural representation of artificial tear duct of the present utility model.
Fig. 2 is the schematic layout pattern of the conduction hole of artificial tear duct.
The specific embodiment
Below in conjunction with the drawings and specific embodiments artificial tear duct of the present utility model is described, to help understanding content of the present utility model.
As shown in Figure 1, it is a kind of artificial tear duct, comprise the draught line 4 that flexible pipe body that isogonic is soft in the quality medical silica-gel material is made and No. 1 white silk constitute, body is that thick section 1 of 1.5～2.5mm and external diameter are that the thin segment 3 of 0.8～1.5mm constitutes by external diameter, the changeover portion 2 that Diameter Gradual Change is arranged between rugosity 1 and the thin segment 3, body tube wall are provided with a plurality of through holes and form tear drainage hole 5.Draught line 4 diameters are less than body thin segment 3 and be connected on the end connecting portion 3a of body thin segment 3.
In order to reach reasonable tear drainage effect, as shown in Figure 2, conduction hole 5 is that two rows are arranged on the thick section of the body both sides tube wall relative with thin segment the layout type that two row's conduction holes adopt dislocation to arrange.
Draught line 4 ends are inserted embedding and are connected in the connecting portion 3a endoporus of body thin segment end, and the connecting portion 3a external diameter gradual change of body thin segment seamlessly transits to consistent with draught line 4, and this connecting portion is not provided with conduction hole.Adopt the external diameter of gradual change to help more under the effect of draught line pull strength, passing through lacrimal passage.
The diameter of the conduction hole 5 on thick section 1 of body and the thin segment 3 is 0.25～0.5mm, spacing between the homonymy conduction hole is 5～7mm, conduction hole is too small, the excessive drainage effect of spacing is poor, and the excessive and overstocked body rigidity that then can reduce of conduction hole makes support and dilating effect variation.
The internal diameter of the thick section 1 of body can adopt 0.8～1.5, and thick segment length is advisable general desirable 80mm with 70～100mm.Thin segment 3 internal diameters can adopt 0.4～0.6m m, length (not containing connecting portion) can be 100～200mm, general desirable 120mm, can pass through lachrymal sac, tear house steward, lower lacrimal canaliculi, go out lacrimal passage from following puncta, insert from last puncta again, go into nasal cavity through superior canaliculus, tear house steward, lachrymal sac, nasolacrimal duct.The length of draught line 4 is 100～200mm, and the length of connecting portion 3a is 25～50mm..
Using method: use this artificial tear stains to insert from nasolacrimal duct, and make thick section to be retained in the nasolacrimal duct place, thin segment is through lachrymal sac, tear house steward, lower lacrimal canaliculi, go out lacrimal passage from following puncta, insert from last puncta again, go into nasal cavity through superior canaliculus, tear house steward, lachrymal sac, nasolacrimal duct, fixing with the silk thread knotting two sections of nasal cavity thicknesses, it is outer for the part body to cut off nasal cavity.Thick section is used for nasolacrimal duct is expanded and supported, and thin segment is used for dacryocanalicular expansion and support.Conduction hole is used for tear is introduced in the artificial tear duct to drain lacrimal passage.
Claims (5)
1, a kind of artificial tear duct, it is characterized in that: comprise flexible pipe body and draught line, body comprises that external diameter is that thick section of 1.5～2.5mm and external diameter are the thin segment of 0.8～1.5mm, the changeover portion that Diameter Gradual Change is arranged between thick section and the thin segment, be provided with a plurality of through holes at the tube wall of body and form conduction holes, described draught line diameter is less than the body thin segment and be connected on the connecting portion of body thin segment end.
2, artificial tear duct as claimed in claim 1 is characterized in that: described conduction hole is two rows, is arranged on the relative both sides tube wall of described body, and two row's conduction holes adopt dislocation to arrange.
3, artificial tear duct as claimed in claim 1 or 2 is characterized in that: described drainage tube diameter is 0.25～0.5mm, and the spacing between the homonymy conduction hole is 5～7mm.
4, artificial tear duct as claimed in claim 3 is characterized in that: the thick segment length of described body is 70～100mm, and thin segment length is 100～200mm, and connecting portion length is 25～50mm, and draught line length is 100～200mm.
5, artificial tear duct as claimed in claim 1 or 2, it is characterized in that: described draught line end is inserted embedding and is connected in the connecting portion endoporus of described body thin segment end, the connecting portion external diameter gradual change of described body thin segment seamlessly transits to consistent with draught line, and this connecting portion is not provided with conduction hole.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNU2008200058905U CN201164536Y (en) | 2008-02-28 | 2008-02-28 | Artificial dacryosolen |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNU2008200058905U CN201164536Y (en) | 2008-02-28 | 2008-02-28 | Artificial dacryosolen |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN201164536Y true CN201164536Y (en) | 2008-12-17 |
Family
ID=40189922
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CNU2008200058905U Expired - Fee Related CN201164536Y (en) | 2008-02-28 | 2008-02-28 | Artificial dacryosolen |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN201164536Y (en) |
-
2008
- 2008-02-28 CN CNU2008200058905U patent/CN201164536Y/en not_active Expired - Fee Related
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C17 | Cessation of patent right | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20081217 Termination date: 20110228 |