Abstract: A shunt 10 for implantation in the human body for treating ocular disorders related to disorders of intraocular or intracranial pressure by providing for flow of aqueous fluid in the anterior chamber A of the eye and cerebrospinal fluid in the subarachnoid space B surrounding the optic nerve C. The shunt has a proximal end 12 which is implanted in the ocular anterior chamber and a distal end 14 which is implanted in the subarachnoid space. The shunt has a two-part construction, including a flexible distal tube 18 and a rigid proximal tube 20. The distal tube has a distal stop formation 26 near the distal end 14 which is located in the subarachnoid space upon implantation of the distal end, resisting withdrawal of the shunt. The proximal tube has a curved portion which conforms to the anatomical curvature of the ocular globe.

Abstract: A shunt 10 for implantation in the human body for treating ocular disorders related to disorders of intraocular or intracranial pressure by providing for flow of aqueous fluid in the anterior chamber A of the eye and cerebrospinal fluid in the subarachnoid space B surrounding the optic nerve C. The shunt has a proximal end 12 which is implanted in the ocular anterior chamber and a distal end 14 which is implanted in the subarachnoid space. The shunt has a two-part construction, including a flexible distal tube 18 and a rigid proximal tube 20. The distal tube has a distal stop formation 26 near the distal end 14 which is located in the subarachnoid space upon implantation of the distal end, resisting withdrawal of the shunt. The proximal tube has a curved portion which conforms to the anatomical curvature of the ocular globe.

Abstract: A shunt 200 for treating glaucoma in a patient during and/or after vitreoretinal surgery involving the use of a tamponading agent comprising a gas or oil bubble 50. The shunt includes a tubular body 12 having a proximal end 14 which is implantable in the vitreous cavity C of a patient and a distal end which is implantable in the subarachnoid space of the patient. The tubular body defines a lumen 18 extending between the distal and proximal ends. The shunt includes an occlusion body 32 defining a number of micro-passages 34 inflow communication with the lumen 18. The micro-passages are configured in terms of their size and number to provide sufficient surface tension and viscosity resistance in order to prevent the tamponading agent from passing through the micro-passages into the lumen, yet allow sufficient aqueous fluid from the vitreous cavity to travel along the micro-passages into the lumen 18 in order to regulate intraocular pressure.

Abstract: An orbital tissue retractor 10 for use in a surgical operation in the region of an eye socket, comprises an orbital tissue retractor body 12 and a handle 14 extending therefrom for manipulation of the tissue retractor body by a surgeon. The tissue retractor body comprises a channel formation 16 defining a channel 17. The channel formation 16 has a pair of spaced side wall sections 24 which define concave curved ocular abutment formations 26 which conform to an anatomical curvature of the ocular globe for abutment with the ocular globe N. The tissue retractor body has open proximal end 22 and an open distal end 20. The tissue retractor body tapers from the proximal end to the distal end, with a portion of the channel formation at the distal end being curved so as to accommodate and cradle the optic nerve therein. The retractor body has a curved base wall section 28 conforming to an anatomical curvature of the orbit.

Abstract: An orbital tissue retractor 10 for use in a surgical operation in the region of an eye socket, comprises an orbital tissue retractor body 12 and a handle 14 extending therefrom for manipulation of the tissue retractor body by a surgeon. The tissue retractor body comprises a channel formation 16 defining a channel 17. The channel formation 16 has a pair of spaced side wall sections 24 which define concave curved ocular abutment formations 26 which conform to an anatomical curvature of the ocular globe for abutment with the ocular globe N. The tissue retractor body has open proximal end 22 and an open distal end 20. The tissue retractor body tapers from the proximal end to the distal end, with a portion of the channel formation at the distal end being curved so as to accommodate and cradle the optic nerve therein. The retractor body has a curved base wall section 28 conforming to an anatomical curvature of the orbit.

Abstract: A shunt 10 for implantation in the human body for treating ocular disorders related to disorders of intraocular or intracranial pressure by providing for flow of aqueous fluid in the anterior chamber A of the eye and cerebrospinal fluid in the subarachnoid space B surrounding the optic nerve C. The shunt has a proximal end 12 which is implanted in the ocular anterior chamber and a distal end 14 which is implanted in the subarachnoid space. The shunt has a two-part construction, including a flexible distal tube 18 and a rigid proximal tube 20. The distal tube has a distal stop formation 26 near the distal end 14 which is located in the subarachnoid space upon implantation of the distal end, resisting withdrawal of the shunt. The proximal tube has a curved portion which conforms to the anatomical curvature of the ocular globe.