초록 ▼

A disposable lens for reconfiguring the cornea of an eye for ophthalmic laser surgery includes a lens which has a flat anterior surface that is formed opposite a contact surface. A skirt surrounds the contact surface and extends outwardly therefrom to define a chamber. The skirt is formed with a gro

A disposable lens for reconfiguring the cornea of an eye for ophthalmic laser surgery includes a lens which has a flat anterior surface that is formed opposite a contact surface. A skirt surrounds the contact surface and extends outwardly therefrom to define a chamber. The skirt is formed with a groove which creates a suction channel between the skirt and the contact surface in the chamber. In its operation, the lens is positioned over the cornea and a vacuum pump is selectively activated to create a partial vacuum in the suction channel. Due to this partial vacuum, the cornea is drawn into the chamber where it is urged against the contact surface of the lens. The result of this is that the cornea is flattened into a configuration where the introduction of spherical aberration and coma into a light beam passing into the cornea is reduced or eliminated.

대표청구항 ▼

A disposable lens for reconfiguring the cornea of an eye for ophthalmic laser surgery includes a lens which has a flat anterior surface that is formed opposite a contact surface. A skirt surrounds the contact surface and extends outwardly therefrom to define a chamber. The skirt is formed with a gro

A disposable lens for reconfiguring the cornea of an eye for ophthalmic laser surgery includes a lens which has a flat anterior surface that is formed opposite a contact surface. A skirt surrounds the contact surface and extends outwardly therefrom to define a chamber. The skirt is formed with a groove which creates a suction channel between the skirt and the contact surface in the chamber. In its operation, the lens is positioned over the cornea and a vacuum pump is selectively activated to create a partial vacuum in the suction channel. Due to this partial vacuum, the cornea is drawn into the chamber where it is urged against the contact surface of the lens. The result of this is that the cornea is flattened into a configuration where the introduction of spherical aberration and coma into a light beam passing into the cornea is reduced or eliminated. Regular Meeting of the Japanese Life Support Society, Aug. 24, 2001, Japan Medical University, Filed Mar. 8, 2002, Japanese Patent Office. sition; the movable wall section assisting in the sealing of an object extending through the lumen and movable upon engagement and axial movement of the object with the lumen by eversion so that a part of an inner portion of the sleeve moves to become a part of an outer portion of the sleeve and a section of the outer portion of the sleeve moves to become a section of the inner portion of the sleeve; and wherein said ring comprises a first ring located at a proximal end of the movable wall section and axially movable in relation to the sleeve, and the sealing device further comprises a second ring fixedly secured at a distal end portion of the movable wall section, each said first and second rings assisting in positioning the sleeve about the incision and orientated to lie in a plane that is generally perpendicular to the longitudinal axis of the sleeve. 12. A medical sealing device according to claim 11, wherein the first and second rings each comprise flexible O-rings. 13. A medical sealing device for engaging an incision in a patient, comprising: a sleeve comprising an incision engagable wall section, a movable wall section, an inflation space, and a longitudinal axis; and a ring located at at least one end portion of the movable wall section for assisting in maintaining the sleeve against a wall of the incision, the movable wall section movable relative to the incision engagable wall section and forming at least a central lumen extending along the longitudinal axis, inflation of the inflatable space urging the central lumen into a sealed position; the movable wall section assisting in the sealing of an object extending through the lumen and movable upon engagement and axial movement of the object with the lumen by eversion so that a part of an inner portion of the sleeve moves to become a part of an outer portion of the sleeve and a section of the outer portion of the sleeve moves to become a section of the inner portion of the sleeve; and wherein said ring comprises a first ring and the sealing device comprises a second ring, the first and second rings being located within the inflation space axially spaced from each other, and each lying in a plane generally perpendicular to the longitudinal axis of the sleeve. 14. A medical sealing device according to claim 13, wherein the first and second rings are each independently axially movable in relation to the sleeve. 15. A medical sealing device according to claim 13, wherein the first and second flexible rings are coupled to each other and together axially moveable in relation to the sleeve. 16. A medical sealing device for engaging an incision in a patient, comprising: a sleeve comprising an incision engagable wall section, a movable wall section, an inflation space, and a longitudinal axis; and a ring located at at least one end portion of the movable wall section for assisting in maintaining the sleeve against a wall of the incision, the movable wall section movable relative to the incision engagable wall section and forming at least a central lumen extending along the longitudinal axis, inflation of the inflatable space urging the central lumen into a sealed position; the movable wall section assisting in the sealing of an object extending through the lumen and movable upon engagement and axial movement of the object with the lumen by eversion so that a part of an inner portion of the sleeve moves to become a part of an outer portion of the sleeve and a section of the outer portion of the sleeve moves to become a section of the inner portion of the sleeve; wherein the incision engagable wall section is formed of a material different than the material forming the movable wall section; and wherein the incision engagable wall section is formed of a material more flexible than the material forming the movable wall section. 17. A medical sealing device for engaging an incision in a patient, comprising: a sleeve comprising an incision engagable wa