Optic-nerve-sheath incision knife

Abstract

The invention relates to the field of medical instruments and particularly relates to a special optic-nerve-sheath incision knife for optic-nerve-sheath fenestration. The optic-nerve-sheath incision knife comprises a knife handle and a knife body, wherein a blocking piece is fixedly arranged at one side of the front end of the knife handle. The special optic-nerve-sheath incision knife has the advantages that since the blocking piece is fixed at one side of the front end of the knife handle, the tissue around the optic nerve can be isolated, the influence of the tissue around the optic nerve on a knife body in the incision process is avoided, so that the incision operation is carried out on the optic nerve sheath; the longer knife handle can be easy to extend into a narrow gap between the eyeball and the eyepit, so that the optic-nerve-sheath incision is accurately finished.

Description

technical field [0001] The invention relates to the field of medical instruments, in particular to a special optic nerve sheath incision knife for optic nerve sheath fenestration. Background technique [0002] Due to the "intracranial sagittal sinus thrombosis, causing intracranial hypertension", the optic nerve is oppressed, resulting in blurred eye imaging, gradual decline in vision, accompanied by headache, dizziness, and tinnitus. At present, it has been successfully created clinically - optic nerve Sheath fenestration has a good therapeutic effect on this ophthalmic disease. Optic nerve sheath fenestration cuts off the eye muscles under a microscope, then turns the eyeball outward to expose the optic nerve sheath, and cuts a thin opening in the optic nerve sheath to allow the intracranial cerebrospinal fluid to flow out along the incision, lowering the intracranial Pressure, maximum relief of high intracranial pressure on the optic nerve compression, save the patient's...

AI Technical Summary

Problems solved by technology

[0003] At present, nerve scissors or neurotomy knife are generally used in clinical operations to open the nerve, but because the optic nerve is located at the back of the eyeball, the space between the eyeball and the orbital wall is very narrow, and it is difficult to touch the optic nerve with nerve scissors with a relatively complex structure; The surface of the sheath is smooth, and a large amount of tissue gathers around it. It is difficult to avoid the influence of the tissue around the optic nerve during the opening process when using a common neurotomy knife. damage

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