Scalpel for circularly and continuously resecting anterior capsules of lenses

Abstract

The invention discloses a scalpel for circularly and continuously resecting anterior capsules of lenses, which is characterized by comprising a hollow handle, wherein the front end of the handle is a tool bit which inclines outwards; a memory alloy strip which is capable of extending out of the mouth of the tool bit to form a circular track is stored in the tool bit; one end of the memory alloy strip is fixedly connected to the outer side of the mouth of the tool bit and extends from the inner side of the mouth of the tool bit towards the rear end of the handle after being bent; a sliding cutter with a blade is sheathed at the bent part; two sections of traction wires are connected onto the sliding cutter; one section is wound on a pulley which is fixedly connected to the outer side of the mouth of the tool bit while the other section is clamped in a groove at the outer side of the memory alloy strip and then extends towards the rear end of the handle; and when the memory alloy strip stored in the tool bit extends out of the mouth of the tool bit to form the circular track, the sliding cutter sheathed thereon is just located at the outer side of the mouth of the tool bit and then the sliding cutter can be driven to carry out continuous and stable circumferential movement from the outer side of the mouth of the tool bit to the inner side or from the inner side to the outer side along the circular track by contracting or releasing the tractions wires from the rear end of the handle.

Description

technical field [0001] The invention relates to a surgical instrument for cataract extraction in clinical ophthalmic surgery. Background technique [0002] Cataract is the leading cause of blindness in humans. All kinds of reasons, such as aging, genetics, local nutritional disorders, immune and metabolic abnormalities, trauma, poisoning, radiation, etc., can cause lens metabolic disorders, resulting in lens protein denaturation and turbidity, which is called cataract. At this time, because the light is blocked by the cloudy lens and cannot be projected on the retina, the patient's vision is reduced. [0003] Systemic diseases such as diabetes, kidney disease, hypocalcemia and long-term use of hormone drugs can also cause cataracts. But the most common is age-related cataracts that occur in older adults. Age-related cataract is one of the most common blinding eye diseases. [0004] At present, the treatment of cataract is still dominated by surgery. Phacoemulsification i...

AI Technical Summary

Problems solved by technology

Some scholars tried to solve the problem of CCC by adopting oblique light source, underwater continuous circular capsulorhexis, YAG laser capsulectomy, and dyeing agents such as methylene blue and indocyanine chloride, etc. However, due to the existence of damage and other problems, it has not been widely used in clinical practice.

Recently, some scholars have proposed to use femtosecond laser technology to solve the problem of cataract surgery cystectomy, but the machine is expensive, which creates an insurmountable gap for the popularization of this technology

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