Capsulectomy device and method therefore
First Claim
1. A surgical instrument for forming a radial incision, comprising:
- a user supported reciprocating shaft having first and second ends, said second end of said reciprocating shaft having situated thereupon rotation means for providing rotation, said rotation means having mounted thereupon, in lateral fashion, a cutting blade having a cutting tip and a leading cutting edge, said cutting blade mounted upon said rotation means such that a single rotation of said rotation means traverses said leading cutting edge of said cutting blade along a complete path for forming the radial incision;
reciprocation means for reciprocating said reciprocating shaft, such that reciprocation of said reciprocating shaft reciprocates said cutting blade as said rotation means rotates.
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Accused Products
Abstract
A surgical instrument for ophthalmic surgery, allowing the user to form a uniform circular incision of the anterior lens capsule of an eyeball, as part of an anterior capsulotomy. The capsulectomy device of the preferred embodiment of the present invention has first and second ends, with a rotor emanating from one end, the rotor having a cutting blade or bin situated at the distal end of the rotor, the rotor rotating in pivotal fashion up to 360 degrees, while simultaneously reciprocating the cutting blade at a consistent stroke so as to provide optimal incision edge and depth of the anterior lens capsule of the eyeball. The device is hand held and relatively compact, having provided therein a motor and gear reduction/transmission system for driving the rotor and providing the reciprocating action to the cutting blade or pin. The device further includes a power supply, which is illustrated as a separate component fed to the device via wire, as well as controls for initiating power, as well as varying the speed of the motor. Unlike the prior art systems, which generally have relied upon the skill of the surgeon to perform the radial incision by hand, the present system provides a relatively easy and uniform system for performing the radial incision which is believed to be safer, more uniform, and less time consuming than prior techniques.
98 Citations
24 Claims
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1. A surgical instrument for forming a radial incision, comprising:
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a user supported reciprocating shaft having first and second ends, said second end of said reciprocating shaft having situated thereupon rotation means for providing rotation, said rotation means having mounted thereupon, in lateral fashion, a cutting blade having a cutting tip and a leading cutting edge, said cutting blade mounted upon said rotation means such that a single rotation of said rotation means traverses said leading cutting edge of said cutting blade along a complete path for forming the radial incision; reciprocation means for reciprocating said reciprocating shaft, such that reciprocation of said reciprocating shaft reciprocates said cutting blade as said rotation means rotates. - View Dependent Claims (2, 3, 4, 5, 6, 9, 10)
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7. The surgical instrument of claim 7, wherein said first and second cutting edges of said cutting blade have a length of 5 mm or less.
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8. The surgical instrument of claim 8, wherein said cutting tip is reciprocated so as to form a stroke of 0.5 mm or less.
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11. The method of incising the anterior membrane of a lens capsule of an eyeball having a cornea, sclera, and lens, comprising the steps of:
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a. providing an ophthalmic surgical instrument, comprising; a user supported reciprocating shaft having first and second ends, said second end of said reciprocating having situated thereupon rotation means for providing rotation, said rotation means having mounted thereupon, in lateral fashion, a cutting blade having a cutting tip and a leading cutting edge, said cutting blade mounted upon said rotation means such that a single rotation of said rotation means traverses said leading cutting edge of said cutting blade along a complete path for forming a radial incision; reciprocation means for reciprocating said reciprocating shaft, such that reciprocation of said reciprocating shaft reciprocates said cutting blade as said rotation means rotates; b. forming an incision on the eyeball generally between the cornea and the sclera; c. passing said second end of said reciprocating shaft into said incision such that said rotating means and said cutting blade are situated under the cornea; d. centering said rotating means above the anterior membrane of the lens capsule, while placing said cutting tip of said cutting blade in contact with said anterior membrane of said lens capsule; e. reciprocating said cutting blade into said anterior membrane of said lens capsule, incising said lens capsule, while rotating said rotation means to traverse said reciprocating cutting blade along a radial path, forming a radial incision of said anterior membrane of said lens capsule. - View Dependent Claims (12, 13, 14)
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15. The method of incising tissue, comprising steps of:
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a. providing a surgical instrument having first and second ends, said second end of said surgical instrument comprising a reciprocating shaft having emanating therefrom a cutting blade having a cutting edge, said cutting blade pivotally mounted to said reciprocating shaft such that said cutting blade pivots in a circular path;
said surgical instrument further comprising reciprocating means to reciprocate said cutting blade, and rotation means to pivotally rotate said cutting blade;b. manually grasping said first end of said surgical instrument; c. placing said cutting blade into contact with said tissue; d. while holding said surgical instrument still, initiating reciprocating means to reciprocate said cutting blade, while e. initiating said rotation means to rotate said cutting edge of said cutting blade along a circular path; f. forming a radial incision.
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16. A surgical instrument for radially incising the anterior lens capsule of an eyeball, comprising:
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a user supported reciprocating shaft having first and second ends, said second end of said reciprocating shaft having situated thereupon rotation means for providing rotation, said rotation means having mounted thereupon, in lateral fashion, a cutting blade having a cutting tip and a leading cutting edge, said cutting blade mounted upon said rotation means such that a single rotation of said rotation means traverses said leading cutting edge of said cutting blade along a complete path so as to form a radial incision; reciprocation means associated with said rotation means for reciprocating said reciprocating shaft, such that reciprocation of said reciprocating shaft reciprocates said cutting blade as said rotation means rotates, said reciprocation means comprising a motor driven drive shaft having a cam situated thereupon, said cam having formed thereabout a housing having an elliptical wall formed therein, said housing mounted upon said reciprocating shaft, said cam configured to engage said elliptical wall of said housing such that rotation of said cam about said drive shaft reciprocates said housing, so as to reciprocate said reciprocating shaft, so as to reciprocate said cutting blade. - View Dependent Claims (17, 18, 19, 20, 21, 22, 23, 24)
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Specification