EP0168201A1
Expired / Lapsed
EP
⏱️ 0.0 years remaining
Aqueous humour drainage device
Assignee: JOSEPH, NEIL HOWARD
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Filing: 1985-06-27
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Granted: —
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Expires: 2005-06-27
Abstract
Abstract A device (1) for draining aqueous humour from an eye (10) comprises a drainage tube (2) and a drainage body (3). The drainage tube (2) drains aqueous humour from the anterior chamber (15) of the eye (10), and the drainage body (3) distributes drained aqueous humour over a relatively large area. The drainage tube (2) is firmly fixed to the drainage bodv (3). and opens directly on to a surface of the drainage body. The drainage body (3) is constituted by a silicone rubber band having a width of at least 5 mm and a length which is sufficient for the band to pass around, and to be sutured to, the sclera (11) of the eye (10) in an equatorial position. The device (1) is provided with a pressure gradient limiting valve (5) having a predetermined opening pressure.
Inventors
- 👤 Neil Howard Joseph
Bibliographic Details
Application Number
—
Jurisdiction
EP
Data Source
google_patents
Last Synchronized
2026-10-23 03:31
CPC Classifications
A; A61; A61F; A61F9/00; A61F9/007; A61F9/00781
Claims Analysis
Total Claims: 13
Claim 1
Independent Claim
120 words
A device for draining aqueous humour from an eye, the device comprising a drainage tube for draining aqueous humour from the anterior chamber of an eye, and a drainage body for distributing drained aqueous humour over a relatively large area, the drainage tube being firmly fixed to the drainage body and opening directly on to a surface of the drainage body, and the drainage body being constituted by a band having a width of at least 5 mm and a length which is sufficient for the band to pass around, and to be sutured to, the sclera of the eye in an equatorial position, wherein the device is provided with a pressure gradient limiting valve having a predetermined opening pressure.
Claim 2
Independent Claim
120 words
A device for draining aqueous humour from an eye, the device comprising a drainage tube for draining aqueous humour from the anterior chamber of an eye, and a drainage body for distributing drained aqueous humour over a relatively large area, the drainage tube being firmly fixed to the drainage body and opening directly on to a surface of the drainage body, and the drainage body being constituted by a band having a width of at least 5 mm and a length which is sufficient for the band to pass around, and to be sutured to, the sclera of the eye in an equatorial position, wherein the device is provided with a pressure gradient limiting valve having a predetermined opening pressure.
Claim 3
Dependent Claim
44 words
A device as claimed in claim 1, wherein the pressure gradient limiting valve is positioned at that end of the tube which is fixed to the band, the valve constituting the opening through which aqueous humour flows directly to said surface of the band.
Claim 4
Dependent Claim
27 words
A device as claimed in claim 2, wherein the pressure gradient limiting valve is constituted by at least one slit formed in the wall of the tube.
Claim 5
Dependent Claim
72 words
A device as claimed in any one of claims 1 to 3, wherein the tube is preformed to follow the arc of a circle, the diameter of which is such that, in use, the free end of the tube is positioned within the anterior member of the eye closer to the iris than the cornea. A device as claimed in claim 4, wherein the diameter of said circle is about 30 mm.
Claim 6
Independent Claim
25 words
A device as claimed in any one of claims 1 to 5, wherein the tube and the band are made of medical grade silicone rubber.
Claim 7
Independent Claim
26 words
A device as claimed in any one of claims 1 to 5, wherein the tube and the band are made of a hydrogel such as hydroxyethylmethacrylate.
Claim 8
Independent Claim
27 words
A device as claimed in any one of claims 1 to 7, wherein the band has a width lying in the range from 9 to 12 mm.
Claim 9
Independent Claim
30 words
A device as claimed in any one of claims 1 to 8, wherein the pressure gradient limiting valve has an opening pressure of from 4 to 20 mm of mercury.
Claim 10
Independent Claim
22 words
A device as claimed in any one of claims 1 to 9, wherein the tube is fused or glued to the band.
Claim 11
Independent Claim
27 words
A device as claimed in any one of claims 1 to 10, wherein the tube extends beyond the band, the end of the extended portion being closed.
Claim 12
Dependent Claim
66 words
A device as claimed in claim 11, further comprising an additional drainage body and an additional tube, one end of the additional tube being connectible to the extension of the first-mentioned tube, after said closed end thereof has been opened, the other end of the additional tube being fixed to the additional drainage body and opening directly on to a surface of the additional drainage body.
Claim 13
Dependent Claim
20 words
A device as claimed in claim 12, wherein an additional pressure gradient limiting valve is provided in the additional tube.
References Cited (Backward Citations)
US3915172A
Cited
FR2233028A1
Cited
US4030480A
Cited
SU906561A1
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SU950378A1
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GB2101891A
Cited
EP0102747A1
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