EP0328117A2
Expired / Lapsed
EP
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Processes for production of a Baloon for an intraocular lens
Assignee: Menicon Co Ltd
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Filing: 1989-02-09
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Granted: —
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Expires: 2009-02-09
Abstract
Abstract A baloon (12) for an intraocular lens (10), which is a unitary elastic hollow body made of an elastomer and having a convex lenticular shape without projections along its circumference, which gives, when inserted in a lens capsule (16), a configuration corresponding substantially to the shape of the lens capsule (16), said hollow body having a wall thickness (t) of from 0.001 to 0.1 mm at its optical portion and a diameter (M) of from 6 to 13 mm, and capable of being inflated in the lens capsule (16) to form an intraocular lens (10) when a light transmitting injection material (14) is injected into the hollow body.
Inventors
- 👤 Kazuhiko Nakada
- 👤 Akihiro Menicon Co. Ltd. Yasuda
- 👤 Makoto Menicon Co. Ltd. Ichikawa
Bibliographic Details
Application Number
—
Jurisdiction
EP
Data Source
google_patents
Last Synchronized
2026-11-04 21:10
CPC Classifications
B; B29; B29D; B29D23/00; B29D23/24; A; A61; A61F; A61F2/00; A61F2/02; A61F2/14; A61F2/16; A61F2/1613; A61F2/1616; B29C; B29C41/00; B29C41/02; B29C41/04; B29C41/042; B29C41/045; B29C41/20; B29C70/00; B29C70/68; B29C70/74; B29C70/76; B29C70/84; B29C70/845; B29D11/00; B29D11/02; B29D11/023; B29D11/026
Claims Analysis
Total Claims: 15
Claim 1
Independent Claim
99 words
A baloon for an intraocular lens, which is a unitary elastic hollow body made of an elastomer and having a convex lenticular shape without projections along its circumference, which gives, when inserted in a lens capsule, a configuration corresponding substantially to the shape of the lens capsule, said hollow body having a wall thickness of from 0.001 to 0.1 mm at its optical portion and a diameter of from 6 to 13 mm, and capable of being inflated in the lens capsule to form an intraocular lens when a light transmitting injection material is injected into the hollow body.
Claim 2
Dependent Claim
99 words
A baloon for an intraocular lens, which is a unitary elastic hollow body made of an elastomer and having a convex lenticular shape without projections along its circumference, which gives, when inserted in a lens capsule, a configuration corresponding substantially to the shape of the lens capsule, said hollow body having a wall thickness of from 0.001 to 0.1 mm at its optical portion and a diameter of from 6 to 13 mm, and capable of being inflated in the lens capsule to form an intraocular lens when a light transmitting injection material is injected into the hollow body.
Claim 3
Dependent Claim
29 words
The baloon according to Claim 1, wherein the hollow body is provided with an inlet for the injection material and an outlet for discharging gas from the hollow body.
Claim 4
Dependent Claim
17 words
The baloon according to Claim 2, wherein the inlet and the outlet are constituted by separate tubes.
Claim 5
Dependent Claim
21 words
The baloon according to Claim 2, wherein the inlet and the outlet are constituted by two pathways formed in one tube.
Claim 6
Dependent Claim
29 words
The baloon according to Claim 2, wherein the outlet is constituted by a check valve or a gas permeable membrane integrally provided on the wall of the hollow body.
Claim 7
Dependent Claim
80 words
The baloon according to Claim 2, wherein the hollow body has a tube having an inner diameter larger than the outer diameter of a catheter and provided therein with a supporting portion for holding the catheter, a catheter is inserted in the tube and held by the supporting portion so that said inlet is constituted by the catheter and said outlet is constituted by the space between the outer surface of the catheter and the inner wall of the tube.
Claim 8
Dependent Claim
146 words
A process for producing a baloon for an intraocular lens, which comprises: a step of preparing mold halves having mold cavities corresponding respectively to halves of a hollow baloon made of an elastomer and having a convex lenticular shape, and having such baloon halves accomodated in the respective mold cavities; a step of placing a predetermined amount of an adhesive monomer in one or each of the baloon halves, and closing the mold halves having the baloon halves accomodated therein so that the convex side of each baloon half is located outside and the peripheral edges of the baloon halves abut against each other; and a step of polymerizing the adhesive monomer while rotating the closed mold about an axis through the centers of the baloon halves, so that the abutting peripheral edges of the baloon halves are bonded by the polymer of the adhesive monomer.
Claim 9
Dependent Claim
146 words
A process for producing a baloon for an intraocular lens, which comprises: a step of preparing mold halves having mold cavities corresponding respectively to halves of a hollow baloon made of an elastomer and having a convex lenticular shape, and having such baloon halves accomodated in the respective mold cavities; a step of placing a predetermined amount of an adhesive monomer in one or each of the baloon halves, and closing the mold halves having the baloon halves accomodated therein so that the convex side of each baloon half is located outside and the peripheral edges of the baloon halves abut against each other; and a step of polymerizing the adhesive monomer while rotating the closed mold about an axis through the centers of the baloon halves, so that the abutting peripheral edges of the baloon halves are bonded by the polymer of the adhesive monomer.
Claim 10
Dependent Claim
165 words
A process for producing a baloon for an intraocular lens, which comprises: a step of preparing a first mold half having a mold cavity corresponding to a half of a hollow baloon made of an elastomer and having a convex lenticular shape, and having such a baloon half accomodated in the mold cavity; a step of preparing a second mold half having a mold cavity corresponding to the outer half of the hollow baloon, and closing the first and second mold halves with a predetermined amount of a baloon-forming monomer polymerizable to form an elastomer placed therein; and a step of polymerizing the monomer while rotating the closed mold about an axis through the center of the baloon half, so that the other half of the hollow baloon is formed in the second mold half and the same time, the other baloon half is integrally bonded to the baloon half accomodate in the first mold half along the peripheral edge of the latter baloon half.
Claim 11
Dependent Claim
165 words
A process for producing a baloon for an intraocular lens, which comprises: a step of preparing a first mold half having a mold cavity corresponding to a half of a hollow baloon made of an elastomer and having a convex lenticular shape, and having such a baloon half accomodated in the mold cavity; a step of preparing a second mold half having a mold cavity corresponding to the outer half of the hollow baloon, and closing the first and second mold halves with a predetermined amount of a baloon-forming monomer polymerizable to form an elastomer placed therein; and a step of polymerizing the monomer while rotating the closed mold about an axis through the center of the baloon half, so that the other half of the hollow baloon is formed in the second mold half and the same time, the other baloon half is integrally bonded to the baloon half accomodate in the first mold half along the peripheral edge of the latter baloon half.
Claim 12
Dependent Claim
107 words
A process for producing a baloon for an intraocular lens, which compriss: a step of introducing a predetermined amount of a baloon-forming monomer polymerizable to form an elastomer into each of mold halves for halves of a hollow baloon having a convex lenticular shape, and casting the monomer on the surface of each mold; a step of closing the mold halves with the cast monomer accomodated therein; and a step of polymerizing the monomer while rotating the closed mold, so that baloon halves are formed in the respective mold halves, and at the same time, the peripheral edges of the baloon halves are bonded to each other.
Claim 13
Dependent Claim
107 words
A process for producing a baloon for an intraocular lens, which compriss: a step of introducing a predetermined amount of a baloon-forming monomer polymerizable to form an elastomer into each of mold halves for halves of a hollow baloon having a convex lenticular shape, and casting the monomer on the surface of each mold; a step of closing the mold halves with the cast monomer accomodated therein; and a step of polymerizing the monomer while rotating the closed mold, so that baloon halves are formed in the respective mold halves, and at the same time, the peripheral edges of the baloon halves are bonded to each other.
Claim 14
Dependent Claim
142 words
A process for producing a baloon for an intraocular lens, which comprises: a step of introducing a predetermined amount of a baloon-forming monomer polymerizable to form an elastomer into a first mold half for a half of a hollow baloon having a convex lenticular shape, and casting the monomer on the surface of the first mold half; a step of introducing a predetermined amount of a baloon-forming monomer polymerizable to form an elastomer into a second mold half for the other half of the hollow baloon, and overlaying the first mold half on the second mold half to close the mold halves; and a step of polymerizing the monomers while rotating the closed mold, so that baloon halves are formed in the respective mold halves, and at the same time, the peripheral edges of the baloon halves are bonded to each other.
Claim 15
Dependent Claim
142 words
A process for producing a baloon for an intraocular lens, which comprises: a step of introducing a predetermined amount of a baloon-forming monomer polymerizable to form an elastomer into a first mold half for a half of a hollow baloon having a convex lenticular shape, and casting the monomer on the surface of the first mold half; a step of introducing a predetermined amount of a baloon-forming monomer polymerizable to form an elastomer into a second mold half for the other half of the hollow baloon, and overlaying the first mold half on the second mold half to close the mold halves; and a step of polymerizing the monomers while rotating the closed mold, so that baloon halves are formed in the respective mold halves, and at the same time, the peripheral edges of the baloon halves are bonded to each other.
References Cited (Backward Citations)
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