CN2489746Y - Cup artificial masolacrimal duct - Google Patents
Cup artificial masolacrimal duct Download PDFInfo
- Publication number
- CN2489746Y CN2489746Y CN 01249303 CN01249303U CN2489746Y CN 2489746 Y CN2489746 Y CN 2489746Y CN 01249303 CN01249303 CN 01249303 CN 01249303 U CN01249303 U CN 01249303U CN 2489746 Y CN2489746 Y CN 2489746Y
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- CN
- China
- Prior art keywords
- tube
- cup
- drainage tube
- fixed part
- shaped artificial
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- Expired - Lifetime
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Abstract
The utility model provides a cup artificial masolacrimal duct which is formed by serially connecting a fixing part with circum-circle of comparatively large diameter and a drainage tube with comparatively small tube diameter. The end of the drainage tube is an inclined cutting-shaped opening, and the tub wall with diameter between 1.5 millimeters to 2.5 millimeters is right above the point of the inclined cutting-shaped opening and whose top is opened with a small hole; the tube wall of the upper part of the drainage tube is evenly cut into four tube petals, and each tube petal is bended into a base section, a middle section and a top section, the base section of the tube petal at the fixing part is connected with the drainage tube, and the top section of the tub petal at the fixing part contracts into the circle and forms a thin hole at the top end, moreover, the fixing part is wholly in a structure with small bottom and big end, and finally is formed by molding; besides, the artificial nasolacrimal duct is made of medical intermediate soft composite material. Apart from promising little operation wound and not changing the former anatomy channel of the tear duct, the utility model has the advantages of comparatively perfect treatment effect, simple structure, low cost and easy popularization and using.
Description
Technical field: this utility model relates to medical science ophthalmic diseases interventional operation equipment, relates in particular to the improvement of artificial nasolacrimal canal structure.
Background technology: obstruction of naso lacrimal duct and chronic dacryocystitis are common ocular disease, at present mainly with lacrimal passage visit art, and nasal cavity lachrymal sac anastomosis treat.It is little, simple to operate that lacrimal passage is visited the art damage, but the long-term effect instability, and the relapse rate height is not suitable for the treatment of chronic dacryocystitis especially, makes its application be subjected to certain limitation.Dacryocystorhinostomy be treat at present obstruction of naso lacrimal duct, and the method for chronic dacryocystitis in best results, the success rate height.But operation is complicated, and intraoperative hemorrhage is many, and operating time is long, and the operation rear face leaves cicatrix, can not undergo surgery because of surgical contraindication sometimes; Operation has simultaneously changed the original anatomical passageway of lacrimal passage, in case postoperative anastomotic stoma fiber forms cicatrix or ossified, can cause anastomotic stoma to block so that cause that lacrimal passage blocks again.
Summary of the invention: this utility model is exactly the deficiency at existing operation method, and it is little to design a kind of surgical injury, does not change the original anatomical passageway of lacrimal passage, and the special-purpose cup-shaped artificial nasolacrimal canal of better therapeutic effect is arranged.
For achieving the above object, this utility model cup-shaped artificial nasolacrimal canal is characterized in that: described cup-shaped artificial nasolacrimal canal is to be connected by the less drainage tube of bigger fixed part of circumscribed circle diameter and caliber to constitute.
The end of described drainage tube is a bevel shape opening, and 2mm ± 0.5mm also has aperture on interior tube wall above the cusp of bevel shape opening is straight; Described fixed part is on average being split into tube wall four arm lobes on drainage tube top, each pipe lobe is bent to form base segment, stage casing, top section, and fixed part pipe lobe base segment is connected with drainage tube, and the section of top is shunk in an annulus, form a top pore, and setting forms.
Described fixed part pipe lobe circumscribed circle diameter makes progress natural expansion to maximum from base segment, carries out the transition to fixed part pipe lobe stage casing again, forms the little down big fixing part structure of.
Described cup-shaped artificial nasolacrimal canal is to adopt the medical middle soft synthetic material of isogonic to make.
The pipe lobe of the cup-shaped fixed part of this utility model artificial nasolacrimal canal has better elastic, being convenient to draw in when operation becomes thin tube-like and guides, installs, and natural expansion is also located voluntarily after entering lachrymal sac, thereby it is simple to operate, easy for installation, must not change original anatomical passageway of lacrimal passage with operation, greatly reduce operating difficulty and wound, and eliminated postoperative scar and sequela, do not have the operation taboo yet, enlarged treatment indication scope; The drainage tube softness can be placed in the nasolacrimal duct for a long time, plays the mediation nasolacrimal duct, and drain especially is adapted to the chronic dacryocystitis patient from the effect of the tear in the lachrymal sac, has improved the quality of operative treatment greatly.Thereby this utility model has significant progress aspect treatment obstruction of naso lacrimal duct and the chronic dacryocystitis, and simple in structure, with low cost, easy to utilize, has good economy and social benefit.
Description of drawings: the utility model is described in further detail below in conjunction with accompanying drawing.
Fig. 1 is the main cutaway view of this utility model embodiment.
Fig. 2 is the vertical view of this utility model embodiment.
The specific embodiment: as shown in Figure 1, 2, the end of described drainage tube 1 is a bevel shape opening 2, also has aperture 3 apart from a=2mm ± 0.5mm on interior tube wall above the cusp of bevel shape opening is straight; Described fixed part is on average being split into tube wall four arm lobes on drainage tube 1 top, each pipe lobe is bent to form base segment 4-1, stage casing 4-2, top section 4-3, and fixed part pipe lobe base segment 4-1 is connected with drainage tube, and the section of top 4-3 is shunk in an annulus 5, form a top pore, setting forms.And most preferred embodiment as shown in Figure 1, 2, its fixed part pipe lobe 4-1 circumscribed circle diameter makes progress natural expansion to maximum from base segment, carries out the transition to fixed part pipe lobe stage casing again, forms the little down big fixing part structure of.
Described cup-shaped artificial nasolacrimal canal is to adopt the medical middle soft synthetic material of isogonic to make.
Present accompanying drawings operational approach of the present utility model: when this utility model cup-shaped artificial nasolacrimal canal is installed, earlier with whole artificial nasolacrimal canal pipe lobe 4-1,4-2,4-3 draws in becomes thin tube-like, puts in place by the guide wire guiding; After guiding, being in place, fixed part recovers to become open petal-shaped 4-1,4-2,4-3 has enough big diameter, collects tear in the lachrymal sac to be fixed on, also keep its drainage tube 1 that links to each other down to be fixed in the nasolacrimal duct simultaneously, play a part mediation nasolacrimal duct and drain tear.
Claims (4)
1, a kind of cup-shaped artificial nasolacrimal canal is characterized in that: described cup-shaped artificial nasolacrimal canal is to be connected by the less drainage tube of bigger fixed part of circumscribed circle diameter and caliber to constitute.
2, cup-shaped artificial nasolacrimal canal as claimed in claim 1 is characterized in that: the end of described drainage tube is a bevel shape opening, and 2mm ± 0.5mm also has aperture on interior tube wall above the cusp of bevel shape opening is straight; Described fixed part is on average being split into tube wall four arm lobes on drainage tube top, each pipe lobe is bent to form base segment, stage casing, top section, and fixed part pipe lobe base segment is connected with drainage tube, and the section of top is shunk in an annulus, form a top pore, and setting forms.
3, cup-shaped artificial nasolacrimal canal as claimed in claim 2 is characterized in that: described fixed part pipe lobe circumscribed circle diameter makes progress natural expansion to maximum from base segment, carries out the transition to fixed part pipe lobe stage casing again, forms the little down big fixing part structure of.
4, cup-shaped artificial nasolacrimal canal as claimed in claim 1 or 2 is characterized in that: described cup-shaped artificial nasolacrimal canal is to adopt the medical middle soft synthetic material of isogonic to make.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 01249303 CN2489746Y (en) | 2001-07-18 | 2001-07-18 | Cup artificial masolacrimal duct |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 01249303 CN2489746Y (en) | 2001-07-18 | 2001-07-18 | Cup artificial masolacrimal duct |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN2489746Y true CN2489746Y (en) | 2002-05-08 |
Family
ID=33659739
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 01249303 Expired - Lifetime CN2489746Y (en) | 2001-07-18 | 2001-07-18 | Cup artificial masolacrimal duct |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN2489746Y (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104398328A (en) * | 2014-09-30 | 2015-03-11 | 浦易（上海）生物技术有限公司 | Completely-depredated medicine carrying nasolacrimal stent and implantation system thereof |
| CN114343965A (en) * | 2022-01-12 | 2022-04-15 | 济南润视医疗器械有限公司 | Lacrimal passage protection drainage tube and installation method |
-
2001
- 2001-07-18 CN CN 01249303 patent/CN2489746Y/en not_active Expired - Lifetime
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104398328A (en) * | 2014-09-30 | 2015-03-11 | 浦易（上海）生物技术有限公司 | Completely-depredated medicine carrying nasolacrimal stent and implantation system thereof |
| CN114343965A (en) * | 2022-01-12 | 2022-04-15 | 济南润视医疗器械有限公司 | Lacrimal passage protection drainage tube and installation method |
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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 | ||
| CX01 | Expiry of patent term |
Expiration termination date: 20110718 Granted publication date: 20020508 |