Device for use in a surgical procedure on an eye of a living being, and method of retracting the iris
First Claim
1. A device for use in a surgical procedure on an eye of a living being, comprising a retraction member, destined for insertion into the anterior chamber of the eye, said retraction member made of a flexible filament and having a hook-shaped engagement part for retracting the iris, at least said engagement part of the retraction member being made of a deformable material with shape memory so that the retraction member is insertable into the anterior chamber with the engagement part in a substantially straight configuration, and subsequently the engagement part is able to recover its original hook-shaped configuration as a consequence of its material characteristics, to implement a retraction of the iris, wherein the engagement part of the retraction member is bendable into the straight configuration for insertion into the anterior chamber at a temperature below a temperature in the anterior chamber and recovers the hook-shaped configuration as a result of the temperature in the anterior chamber.
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Accused Products
Abstract
A device for use in a surgical procedure on an eye of a living being, includes a retraction member, destined for insertion into the anterior chamber of the eye. The retraction member has a hook-shaped engagement part for retracting the iris, whereby at least the engagement part of the retraction member is made of a deformable material with shape memory. Thus, the retraction member is insertable into the anterior chamber with the engagement part exhibiting a substantially straight configuration, and subsequently the engagement part is able to recover its original hook-shaped configuration as a consequence of its material characteristics.
96 Citations
37 Claims
- 1. A device for use in a surgical procedure on an eye of a living being, comprising a retraction member, destined for insertion into the anterior chamber of the eye, said retraction member made of a flexible filament and having a hook-shaped engagement part for retracting the iris, at least said engagement part of the retraction member being made of a deformable material with shape memory so that the retraction member is insertable into the anterior chamber with the engagement part in a substantially straight configuration, and subsequently the engagement part is able to recover its original hook-shaped configuration as a consequence of its material characteristics, to implement a retraction of the iris, wherein the engagement part of the retraction member is bendable into the straight configuration for insertion into the anterior chamber at a temperature below a temperature in the anterior chamber and recovers the hook-shaped configuration as a result of the temperature in the anterior chamber.
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31. A device for use in a surgical procedure on an eye of a living being, comprising:
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a retraction member, destined for insertion into the anterior chamber of the eye, said retraction member having a hook-shaped engagement part for retracting the iris, at least said engagement part of the retraction member being made of a deformable material with shape memory so that the retraction member is insertable into the anterior chamber with the engagement part in a substantially straight configuration, and subsequently the engagement part is able to recover its original hook-shaped configuration as a consequence of its material characteristics, to implement a retraction of the iris, wherein the engagement part of the retraction member is bendable into the straight configuration for insertion into the anterior chamber at a temperature below a temperature in the anterior chamber and recovers the hook-shaped configuration as a result of the temperature in the anterior chamber; and
a fixation element slideable and clampable on the retraction member for securing the retraction member in position when the engagement part hooks onto the iris, said fixation element having a disk-like configuration and is made of a caoutchouc mixture exhibiting an optical warning color.
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32. A method of retracting the iris of an eye of a living being for a surgical procedure, comprising the steps of:
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inserting a retraction member made of shape memory material in a substantially straight configuration through an incision in the cornea into the anterior chamber to permit a forward section of the retraction member to recover an original hooked end configuration, thereby forming an engagement part; and
attaching the engagement part to the iris.
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33. A method of retracting the iris of an eye of a living being for a surgical procedure, comprising the steps of:
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placing a retraction member made of shape memory material in a tube so that its hooked end is bent upwards into a forward section of straight configuration;
inserting the tube with contained retraction member through an incision in the cornea into the anterior chamber of the eye;
executing a relative movement between the retraction member and the tube to project the forward section beyond the tube to thereby permit the forward section of the retraction member to recover its original hooked end configuration; and
attaching the hooked end of the retraction member to the iris. - View Dependent Claims (34, 35, 36)
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37. An iris retractor, comprising a body portion made of a flexible filament and having an end section, at least the end section being made of a deformable material with shape memory so as to assume a hook-shaped configuration, when the end portion of the body portion is inserted into the anterior chamber of an eye, in response to a temperature prevailing in the anterior chamber.
Specification