CN104490515A - Glaucoma valve and glaucoma drainage device - Google Patents
Glaucoma valve and glaucoma drainage device Download PDFInfo
- Publication number
- CN104490515A CN104490515A CN201410790648.3A CN201410790648A CN104490515A CN 104490515 A CN104490515 A CN 104490515A CN 201410790648 A CN201410790648 A CN 201410790648A CN 104490515 A CN104490515 A CN 104490515A
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- glaucoma
- flabellum
- valve
- glaucoma valve
- drainage device
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Abstract
The invention discloses a glaucoma valve and a glaucoma drainage device, and relates to the technical field of medical apparatus and instruments. The glaucoma valve comprises a pipe. Liquid can be drained by the pipe, and an adjusting component capable of adjusting the size of an outlet of the pipe is arranged in the pipe. The glaucoma drainage device comprises the glaucoma valve. The glaucoma valve and the glaucoma drainage device have the advantages that the size of the outlet of the pipe can be controlled by the adjusting component which is arranged in the pipe of the glaucoma valve, accordingly, the flow of the liquid in the pipe can be accurately controlled, the drainage volume of the glaucoma valve can be matched with repair procedures of the bodies of patients, and complications of glaucoma filtration surgery can be reduced.
Description
Technical field
The present invention relates to technical field of medical instruments, particularly relate to a kind of Glaucoma Valve and the glaucoma drainage device comprising this Glaucoma Valve.
Background technology
After glaucoma filtration surgery, need to use drainage channel to link up outside ophthalmic and eye, drainage channel is generally a tubule, penetrates into angle of anterior chamber and indwelling from below scleral valve.The drainage flow of drainage channel needs to match with the repair process of patient's body.Such as, after surgery in early days, drain is crossed and is freely easily caused shallow of anterior chamber, and then causes a series of bad ophthalmic complications; Middle and advanced stage after surgery, if drainage flow is not enough, then easily causes scarring, and postoperative avascular filtering bleb was lost efficacy, and does not have the effect reducing intraocular pressure.
Therefore, carry out accurately controlling being a difficult problem urgently to be resolved hurrily to the drainage flow of drainage channel.
Summary of the invention
The object of the present invention is to provide a kind of Glaucoma Valve and glaucoma drainage device, accurately to control the drainage flow of drainage channel after glaucoma filtration surgery.
For solving the problems of the technologies described above, as first aspect of the present invention, providing a kind of Glaucoma Valve, comprising and to the body of liquid drain, the regulating part of the outlet size that can regulate described body in described body, can be provided with.
Preferably, described regulating part comprise be arranged on described body inwall at least one is protruding, the volume of described projection can change under the irradiation of light.
Preferably, multiple described protruding ring arranges around the axis of described body.
Preferably, described projection has predetermined length along the axial direction of described body.
Preferably, described regulating part comprises the first flabellum and the second flabellum, and described first flabellum is fixedly installed on the inwall of described body, and described second flabellum can move relative to described first flabellum, to regulate the outlet size of described body.
Preferably, described Glaucoma Valve also comprises the guide ring on the inwall being fixed on described body, described guide ring is provided with gathering sill, a part for described second flabellum is arranged in described gathering sill, and can slide along described gathering sill, further, described second flabellum can be fixed on the precalculated position in described gathering sill.
Preferably, one end of described body is formed as most advanced and sophisticated, and the other end is provided with clamping part.
Preferably, described Glaucoma Valve also comprises anchor portion, and described anchor portion is arranged on the outer wall at described tip.
As second aspect of the present invention, also provide a kind of glaucoma drainage device, comprise above-mentioned Glaucoma Valve provided by the present invention.
Preferably, described regulating part comprise be arranged on described body inwall at least one is protruding, the volume of described projection can change under the irradiation of light, described glaucoma drainage device also comprises reflecting mirror and light source, and the light reflection that described light source can send by described reflecting mirror is to the position at described protruding place.
Preferably, described light source can send ultraviolet light.
Preferably, described regulating part comprises the first flabellum and the second flabellum, described first flabellum is fixedly installed on the inwall of described body, described second flabellum can move relative to described first flabellum, to regulate the outlet size of described body, described glaucoma drainage device also comprises femto-second laser, and described femto-second laser can launch the femtosecond laser carrying out explosion at the edge of described second flabellum.
The present invention controls the outlet size of described body by arranging regulating part in the body of Glaucoma Valve, thus accurately control the flow of liquid in described body, the repair process of the drainage flow of Glaucoma Valve and patient's body is matched, reduces the complication of glaucoma filtration surgery.
Accompanying drawing explanation
Accompanying drawing is used to provide a further understanding of the present invention, and forms a part for description, is used from explanation the present invention, but is not construed as limiting the invention with detailed description of the invention one below.
Fig. 1 is the structural representation of the Glaucoma Valve provided in embodiment one;
Fig. 2 is the structural representation of the Glaucoma Valve provided in embodiment two.
In the accompanying drawings, 1: body; 11: protruding; 10: most advanced and sophisticated; 21: the first flabellums; 22: the second flabellums; 23: guide ring; 2: clamping part; 3: anchor portion.
Detailed description of the invention
Below in conjunction with accompanying drawing, the specific embodiment of the present invention is described in detail.Should be understood that, detailed description of the invention described herein, only for instruction and explanation of the present invention, is not limited to the present invention.
First the present invention provides a kind of Glaucoma Valve, and described Glaucoma Valve comprises and to the body of liquid drain, can be provided with the regulating part of the outlet size that can regulate described body in described body.
The present invention controls the outlet size of described body by arranging regulating part in the body of Glaucoma Valve, thus accurately control the flow of liquid in described body, the repair process of the drainage flow of described Glaucoma Valve and patient's body is matched, reduces the complication of glaucoma filtration surgery.
Described regulating part can have various ways, in the present invention, mainly introduces two kinds of specific embodiments.
Fig. 1 is the structural representation of the Glaucoma Valve provided in embodiment one, described regulating part comprise be arranged on body 1 inwall at least one projection 11, the volume of protruding 11 can change under the irradiation of light.
The material of protruding 11 can adopt the light produced with Calhoun Vision company to regulate the material that crystalline lens (Light Adjustable Lens, LAL) is identical.When light irradiates described material, described material can produce photoreaction, and under the irradiation of light, its surface curvature can change, thus causes local volume to change, and expands or shrinks.Here the preferred ultraviolet light of light.
In the present invention, when light irradiates protruding 11, the surface curvature of protruding 11 can change, and causes the volume of protruding 11 to change.By controlling incident angle and the power of light, just can control shape and the volume of protruding 11, and then controlling the outlet size of body 1, reaching the object of the drainage flow accurately controlling Glaucoma Valve.
Usually, the inwall of body 1 is provided with multiple protruding 11, multiple protruding 11 arrange around the axis of body 1.In practical operation, multiple change in volume of protruding 11 can be controlled, to improve adjustment efficiency simultaneously.
In addition, optionally only can also irradiate one of them or certain several protruding 11, to the resistance of liquid, reach the accurate management and control to liquid drain amount to regulate relevant position in body 1.
In the present invention, the restriction not special to the material making protruding 11, as long as described material can produce change in volume under the irradiation of light.Except material mentioned above, the material making protruding 11 can also be utilize the material that disclosed in CN 101031411A prepared by method.
Further, projection 11 has predetermined length along the axial direction of body 1.Namely protruding 1 can be the point-like bulge-structure being arranged on body 1 inwall, and also can be have certain length along body 1 circulating direction, this length can be consistent with the length of body 1, or be less than the length of body 1.
Further, one end of body 1 is formed as most advanced and sophisticated 10, and the other end is provided with clamping part 2.Described Glaucoma Valve also comprises anchor portion 3, and anchor portion 3 is arranged on the outer wall of most advanced and sophisticated 10, as shown in fig. 1.
Most advanced and sophisticated 10 for penetrating into angle of anterior chamber from below scleral valve, and clamping part 2 and anchor portion 3 are for fixing described Glaucoma Valve and being retained in ophthalmic.
In practical operation, described Glaucoma Valve is implanted in glaucoma filtration surgery, utilize gonioscope can observe directly body 1 after surgery, utilize ultraviolet light or laser, optionally irradiate one or more protruding 11, just the outlet of body 1 can be adjusted to the size of needs, and can repeatedly adjust by some time point after surgery, the material time points such as such as Post operation 1 day, 1 week, January, March, adjust in time according to intraocular pressure after operation in patients and avascular filtering bleb formational situation.
The present embodiment regulates bulge-structure to control the size of body 1 outlet by arranging light in the body 1 of Glaucoma Valve, thus accurately control the flow of liquid in described body, the repair process of the drainage flow of described Glaucoma Valve and patient's body is matched, reduces the complication of glaucoma filtration surgery.
Fig. 2 is the structural representation of the Glaucoma Valve provided in embodiment two, described regulating part comprises the first flabellum 21 and the second flabellum 22, first flabellum 21 is fixedly installed on the inwall of body 1, and the second flabellum 22 can move relative to the first flabellum 21, to regulate the outlet size of body 1.In the present embodiment, have employed the second flabellum 22 and the first flabellum 21 in relative rotation structure realize the accurate control of the outlet size to body 1.
Further, described Glaucoma Valve also comprises the guide ring 23 on the inwall being fixed on body 1, and guide ring 23 is provided with gathering sill, and a part for the second flabellum 22 is arranged in described gathering sill, and can slide along described gathering sill.Guide ring 23 can be arranged on the optional position in body 1.
Further, the second flabellum 22 can be fixed on the precalculated position in described gathering sill, and namely the second flabellum 22 is in its rotation process, also can fixed dwell preposition place in described gathering sill.The structure of multiple similar buckle can be set in described gathering sill, carry out coordinating with the second flabellum 22 and fix.
Or, ratchet can be set in described gathering sill, the outer surface of the second flabellum 22 arranges the hook tooth with described click-fit, the impulsive force that each femtosecond laser explosion produces can make the second flabellum 22 rotate the angle of one or several hook tooth, and fixed by described ratchet, thus the second flabellum 22 is fixed on preposition.
Equally, one end of body 1 is formed as most advanced and sophisticated 10, and the other end is provided with clamping part 2.Described Glaucoma Valve also comprises anchor portion 3, and anchor portion 3 is arranged on the outer wall of most advanced and sophisticated 10, as shown in Figure 2.
Most advanced and sophisticated 10 for penetrating into angle of anterior chamber from below scleral valve, and clamping part 2 and anchor portion 3 are for fixing described Glaucoma Valve and being retained in ophthalmic.
The present embodiment controls the size of body 1 outlet by the first flabellum 21 and the second flabellum 22 arranging relative motion in the body 1 of Glaucoma Valve, thus accurately control the flow of liquid in described body, the repair process of the drainage flow of described Glaucoma Valve and patient's body is matched, reduces the complication of glaucoma filtration surgery.
Present invention also offers a kind of glaucoma drainage device, described glaucoma drainage device comprises above-mentioned Glaucoma Valve provided by the present invention.
For the Glaucoma Valve that embodiment in Fig. 1 one provides, described glaucoma drainage device also comprises reflecting mirror and light source, and the light reflection that described light source can send by described reflecting mirror is to the position at described protruding place.
Described reflecting mirror can be common plane mirror, or the reflecting mirror of other shape.Described light source can be laser, or can send the ultraviolet source of ultraviolet light.In addition, the reflecting mirror in gonioscope can also be utilized to serve as reflecting mirror in the present invention.
When using described glaucoma drainage device, gonioscope is utilized to observe the drain situation of liquid in body 1, then the angle of described reflecting mirror is adjusted, the luminous reflectance sent by described light source is to the position at protruding 11 places, selectably irradiate one or more projection 11, to obtain the drainage flow matched with the recovery situation of current patents's body.
For the Glaucoma Valve that embodiment in Fig. 2 two provides, described glaucoma drainage device also comprises femto-second laser, and described femto-second laser can launch the femtosecond laser carrying out explosion at the edge of the second flabellum 22.
When described femtosecond laser carries out explosion at the edge of the second flabellum 22, the thrust to the second flabellum 22 can be produced, second flabellum 22 is relatively rotated relative to the first flabellum 21, and default position can be rested on, thus control the outlet size of body 1, and then accurately control the drainage flow of body 1 pair of liquid.
For the glaucoma drainage device in above-mentioned two kinds of embodiments, the instrument used for injection be removably connected with the clamping part of described Glaucoma Valve can also be comprised, described instrument used for injection is used for described Glaucoma Valve to inject ophthalmic and indwelling, after setting described Glaucoma Valve, described instrument used for injection is dismantled with described Glaucoma Valve and is separated.
Glaucoma drainage device provided by the invention accurately can control the drainage flow of drainage channel, and the repair process of described drainage flow and patient's body is matched, and reduces the complication of glaucoma filtration surgery.
Be understandable that, the illustrative embodiments that above embodiment is only used to principle of the present invention is described and adopts, but the present invention is not limited thereto.For those skilled in the art, without departing from the spirit and substance in the present invention, can make various modification and improvement, these modification and improvement are also considered as protection scope of the present invention.
Claims (12)
1. a Glaucoma Valve, comprises and to the body of liquid drain, can it is characterized in that, is provided with the regulating part of the outlet size that can regulate described body in described body.
2. Glaucoma Valve according to claim 1, is characterized in that, described regulating part comprise be arranged on described body inwall at least one is protruding, the volume of described projection can change under the irradiation of light.
3. Glaucoma Valve according to claim 2, is characterized in that, multiple described protruding ring arranges around the axis of described body.
4. Glaucoma Valve according to claim 3, is characterized in that, described projection has predetermined length along the axial direction of described body.
5. Glaucoma Valve according to claim 1, it is characterized in that, described regulating part comprises the first flabellum and the second flabellum, and described first flabellum is fixedly installed on the inwall of described body, described second flabellum can move relative to described first flabellum, to regulate the outlet size of described body.
6. Glaucoma Valve according to claim 5, it is characterized in that, described Glaucoma Valve also comprises the guide ring on the inwall being fixed on described body, described guide ring is provided with gathering sill, a part for described second flabellum is arranged in described gathering sill, and can slide along described gathering sill, and described second flabellum can be fixed on the precalculated position in described gathering sill.
7. Glaucoma Valve as claimed in any of claims 1 to 6, is characterized in that, one end of described body is formed as most advanced and sophisticated, and the other end is provided with clamping part.
8. Glaucoma Valve according to claim 7, is characterized in that, described Glaucoma Valve also comprises anchor portion, and described anchor portion is arranged on the outer wall at described tip.
9. a glaucoma drainage device, is characterized in that, comprises the Glaucoma Valve in claim 1-8 described in any one.
10. glaucoma drainage device according to claim 9, is characterized in that, described regulating part comprise be arranged on described body inwall at least one is protruding, the volume of described projection can change under the irradiation of light,
Described glaucoma drainage device also comprises reflecting mirror and light source, and the light reflection that described light source can send by described reflecting mirror is to the position at described protruding place.
11. glaucoma drainage devices according to claim 10, is characterized in that, described light source can send ultraviolet light.
12. glaucoma drainage devices according to claim 9, it is characterized in that, described regulating part comprises the first flabellum and the second flabellum, described first flabellum is fixedly installed on the inwall of described body, described second flabellum can move relative to described first flabellum, to regulate the outlet size of described body
Described glaucoma drainage device also comprises femto-second laser, and described femto-second laser can launch the femtosecond laser carrying out explosion at the edge of described second flabellum.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410790648.3A CN104490515A (en) | 2014-12-18 | 2014-12-18 | Glaucoma valve and glaucoma drainage device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410790648.3A CN104490515A (en) | 2014-12-18 | 2014-12-18 | Glaucoma valve and glaucoma drainage device |
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| Publication Number | Publication Date |
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| CN104490515A true CN104490515A (en) | 2015-04-08 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN201410790648.3A Pending CN104490515A (en) | 2014-12-18 | 2014-12-18 | Glaucoma valve and glaucoma drainage device |
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| CN (1) | CN104490515A (en) |
Cited By (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108135739A (en) * | 2015-08-14 | 2018-06-08 | 卡姆拉斯视觉股份有限公司 | Method for reducing the equipment of intraocular pressure and for manufacturing this equipment |
| CN110913809A (en) * | 2017-06-13 | 2020-03-24 | 英福卡斯公司 | Systems, methods, and devices for treating glaucoma |
| WO2020150663A1 (en) | 2019-01-18 | 2020-07-23 | Shifamed Holdings, Llc | Adjustable flow glaucoma shunts and methods for making and using same |
| TWI722329B (en) * | 2017-10-23 | 2021-03-21 | 日商Ｄｏｘｎｅｔ股份有限公司 | Implant and implant system |
| US11596550B2 (en) | 2020-04-16 | 2023-03-07 | Shifamed Holdings, Llc | Adjustable glaucoma treatment devices and associated systems and methods |
| US11737920B2 (en) | 2020-02-18 | 2023-08-29 | Shifamed Holdings, Llc | Adjustable flow glaucoma shunts having non-linearly arranged flow control elements, and associated systems and methods |
| US11766355B2 (en) | 2020-03-19 | 2023-09-26 | Shifamed Holdings, Llc | Intraocular shunts with low-profile actuation elements and associated systems and methods |
| US11865283B2 (en) | 2021-01-22 | 2024-01-09 | Shifamed Holdings, Llc | Adjustable shunting systems with plate assemblies, and associated systems and methods |
Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1285724A (en) * | 1997-11-20 | 2001-02-28 | 奥普通诺尔有限公司 | Flow regulating implant, method of manufacturing, and delivery device |
| CN1367673A (en) * | 1999-06-02 | 2002-09-04 | 奥普通诺尔有限公司 | Flow control device, introducer and method of implanting |
| US20050271704A1 (en) * | 2002-04-08 | 2005-12-08 | Hosheng Tu | Injectable glaucoma implants with multiple openings |
| WO2005117780A2 (en) * | 2004-06-01 | 2005-12-15 | Becton, Dickinson And Company | Ocular implant and methods for making and using same |
| CN101031411A (en) * | 2004-08-03 | 2007-09-05 | 卡尔豪恩视觉公司 | Method for making adjustable compositions |
| CN101918071A (en) * | 2007-11-23 | 2010-12-15 | 洛桑联邦理工学院 | Non-invasively adjustable drainage device |
-
2014
- 2014-12-18 CN CN201410790648.3A patent/CN104490515A/en active Pending
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1285724A (en) * | 1997-11-20 | 2001-02-28 | 奥普通诺尔有限公司 | Flow regulating implant, method of manufacturing, and delivery device |
| CN1367673A (en) * | 1999-06-02 | 2002-09-04 | 奥普通诺尔有限公司 | Flow control device, introducer and method of implanting |
| US20050271704A1 (en) * | 2002-04-08 | 2005-12-08 | Hosheng Tu | Injectable glaucoma implants with multiple openings |
| WO2005117780A2 (en) * | 2004-06-01 | 2005-12-15 | Becton, Dickinson And Company | Ocular implant and methods for making and using same |
| CN101031411A (en) * | 2004-08-03 | 2007-09-05 | 卡尔豪恩视觉公司 | Method for making adjustable compositions |
| CN101918071A (en) * | 2007-11-23 | 2010-12-15 | 洛桑联邦理工学院 | Non-invasively adjustable drainage device |
Cited By (12)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108135739A (en) * | 2015-08-14 | 2018-06-08 | 卡姆拉斯视觉股份有限公司 | Method for reducing the equipment of intraocular pressure and for manufacturing this equipment |
| JP2018525107A (en) * | 2015-08-14 | 2018-09-06 | カムラス ビジョン インコーポレイテッド | Apparatus and method for reducing intraocular pressure |
| CN110913809A (en) * | 2017-06-13 | 2020-03-24 | 英福卡斯公司 | Systems, methods, and devices for treating glaucoma |
| US11517476B2 (en) | 2017-06-13 | 2022-12-06 | Innfocus, Inc. | Systems, methods, and apparatus for treatment of glaucoma |
| CN110913809B (en) * | 2017-06-13 | 2023-10-03 | 英福卡斯公司 | Systems, methods, and devices for treating glaucoma |
| TWI722329B (en) * | 2017-10-23 | 2021-03-21 | 日商Ｄｏｘｎｅｔ股份有限公司 | Implant and implant system |
| WO2020150663A1 (en) | 2019-01-18 | 2020-07-23 | Shifamed Holdings, Llc | Adjustable flow glaucoma shunts and methods for making and using same |
| EP3911285A4 (en) * | 2019-01-18 | 2022-10-19 | Shifamed Holdings, LLC | Adjustable flow glaucoma shunts and methods for making and using same |
| US11737920B2 (en) | 2020-02-18 | 2023-08-29 | Shifamed Holdings, Llc | Adjustable flow glaucoma shunts having non-linearly arranged flow control elements, and associated systems and methods |
| US11766355B2 (en) | 2020-03-19 | 2023-09-26 | Shifamed Holdings, Llc | Intraocular shunts with low-profile actuation elements and associated systems and methods |
| US11596550B2 (en) | 2020-04-16 | 2023-03-07 | Shifamed Holdings, Llc | Adjustable glaucoma treatment devices and associated systems and methods |
| US11865283B2 (en) | 2021-01-22 | 2024-01-09 | Shifamed Holdings, Llc | Adjustable shunting systems with plate assemblies, and associated systems and methods |
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