CN200966677Y - Pupilla extending device - Google Patents
Pupilla extending device Download PDFInfo
- Publication number
- CN200966677Y CN200966677Y CN 200620015785 CN200620015785U CN200966677Y CN 200966677 Y CN200966677 Y CN 200966677Y CN 200620015785 CN200620015785 CN 200620015785 CN 200620015785 U CN200620015785 U CN 200620015785U CN 200966677 Y CN200966677 Y CN 200966677Y
- Authority
- CN
- China
- Prior art keywords
- elastic ring
- dilation device
- pupil dilation
- cantilever
- pupil
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Expired - Fee Related
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Abstract
The utility model relates to the medical instruments, pertaining to a pupil dilator, comprising a resilient ring with the gap. Both sides of the resilient ring's gap are respectively equipped with one cantilever which realizes the oblique crossing with the plane where the resilient ring is located. The other end of the cantilever is equipped with a grab. No less than three supporting feet are available alternately on the body of the resilient ring. Each supporting foot is provided with the bend section. This utility model boasts the simple structure, the easy manufacturing, the usableness and the safety.
Description
Technical field
This utility model relates to and is used for enlarging and keeping the equipment of expanded state in operation pupil is interim, relates in particular to a kind of pupil dilation device.
Background technology
In intraocular surgery, usually need be with platycoria, to reduce because of medical apparatus contact iris, cornea, crystalline lens or other position they being caused the risk of damage.Normally used method is to drip mydriatic, yet about 1/5th patient can not reach the purpose that pupil is fully expanded with dripping mydriatic, sometimes, the effect that medicine enlarges pupil can not continue, and can make contracted pupil because of the thigmic stimulus iris in operation process.
U.S. Pat 6648819 discloses a kind of pupil dilation device, is the discontinuous ring of a kind of elasticity, and its periphery is provided with vee-cut, and can be of short duration stretching, and the supporting equipment that the pupil dilation device is put into and shifted out that special use is arranged.Yet its complex structure uses inconvenience, and because have more outstanding position, has increased the chance at its contact and infringement corneal endothelium or other position.
Summary of the invention
The purpose of this utility model is to overcome the deficiencies in the prior art, and a kind of pupil dilation device simple in structure, esy to use, safe and reliable is provided.
The technical scheme that realizes above-mentioned purpose is:
A kind of pupil dilation device comprises the elastic ring with a breach, it is characterized in that: the breach two ends of described elastic ring be respectively equipped with one with plane, elastic ring place oblique, the other end of this cantilever is respectively equipped with a grab; The compartment of terrain is provided with the feet more than three or three on the ring body of described elastic ring, and each feet is respectively equipped with kink.
In a kind of optimized technical scheme, the angle of the Plane intersects at described cantilever and described elastic ring place is 10～20 degree.
In a kind of optimized technical scheme, described pupil dilation device is formed by the whole bending of elastic strands coiling.
Thus, pupil dilation device of the present utility model simple in structure is the integral body that links up, and its chance that contacts with corneal endothelium is little, safe and reliable, easy to operate.
Description of drawings
Fig. 1 is the sketch map according to a kind of pupil dilation device of this utility model preferred embodiment.
Fig. 2 is the user mode sketch map of pupil dilation device among Fig. 1.
Fig. 3 is the A-A ' cutaway view of Fig. 2
The specific embodiment
With reference to figure 1 and Fig. 3, be a kind of pupil dilation device, constitute by the elastic ring 1 with a breach, three feets 2, two cantilevers 3 and two grabs 4, each several part is an integral body, is formed by suitable medical organic material or tinsel bending coiling.The two ends of elastic ring 1 are adjacent to each other, and its two ends connect cantilever 2 respectively, and the interior diameter of elastic ring can be preferably the desired value in .5～8mm scope for being fit to the different value of different eye pupil.Three feet 2 even compartment of terrains are distributed on the elastic ring 1, and feet 2 has the V-shaped kink of cross section, to cooperate the iris edge that constitutes pupil.Cantilever 3 is extended respectively by the breach two ends of elastic ring 1 and forms, and is inclined upwardly crossingly with the plane at elastic ring 1 place, and the preferred angle that intersects is 10 degree～20 degree.The adjustment of can working in coordination of the diameter of the length of cantilever 3 and elastic ring 1 is to be fit to needed pupil dilation degree.The tail end of cantilever 3 is connected with grab 4, and it can prevent that dilator integral body from slipping in the interior eye.
With reference to figure 2 and Fig. 3, be the user mode figure of above-mentioned pupil dilation device.Use is, draws two grabs 4 in and makes elastic ring 1 become flat, and the elastic ring 1 that becomes after flat is inserted in the camera oculi anterior by the otch 6 of limbus of corneae, continue to stretch into pupil again, feet is propped up the edge 51 of the iris 5 that constitutes pupil, after the release catch 4, elastic ring 1 elastic recoil, pupil is extended.The diameter that can be by cooperate adjusting elastic ring 1 and the length of cantilever 3 are regulated the degree that needs the pupil that enlarges.
More than by embodiment this utility model is described, but utility model does not constitute any restriction of the present utility model.Any modification in the claim scope or variation all belong to protection domain of the present utility model.
Claims (4)
1. a pupil dilation device comprises the elastic ring with a breach, it is characterized in that: the breach two ends of described elastic ring be respectively equipped with one with plane, elastic ring place oblique, the other end of this cantilever is respectively equipped with a grab; The compartment of terrain is provided with the feet more than three or three on the ring body of described elastic ring, and each feet is respectively equipped with kink.
2. pupil dilation device according to claim 1 is characterized in that: the angle of the Plane intersects at described cantilever and described elastic ring place is 10～20 degree.
3. pupil dilation device according to claim 1 is characterized in that: the cross section of described kink is a V-arrangement.
4. according to each described pupil dilation device of right 1-3, it is characterized in that: described pupil dilation device is formed by the whole bending of elastic strands coiling.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 200620015785 CN200966677Y (en) | 2006-11-15 | 2006-11-15 | Pupilla extending device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 200620015785 CN200966677Y (en) | 2006-11-15 | 2006-11-15 | Pupilla extending device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN200966677Y true CN200966677Y (en) | 2007-10-31 |
Family
ID=38966250
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 200620015785 Expired - Fee Related CN200966677Y (en) | 2006-11-15 | 2006-11-15 | Pupilla extending device |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN200966677Y (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US8900136B2 (en) | 2013-03-15 | 2014-12-02 | Beaver-Visitec International (Us), Inc. | Iris expander |
-
2006
- 2006-11-15 CN CN 200620015785 patent/CN200966677Y/en not_active Expired - Fee Related
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US8900136B2 (en) | 2013-03-15 | 2014-12-02 | Beaver-Visitec International (Us), Inc. | Iris expander |
| US9579094B2 (en) | 2013-03-15 | 2017-02-28 | Beaver-Visitec International (Us), Inc. | Iris expander |
| US10433828B2 (en) | 2013-03-15 | 2019-10-08 | Beaver-Visitec International (Us), Inc. | Iris expander |
| US11389150B2 (en) | 2013-03-15 | 2022-07-19 | Beaver-Visitec International (Us), Inc. | Iris expander |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C19 | Lapse of patent right due to non-payment of the annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |