Apparatus for removing cataracts

• US 4,597,388 A
• Filed: 12/15/1983
• Issued: 07/01/1986
• Est. Priority Date: 12/15/1983
• Status: Expired due to Fees

• Current Assignee: Trutek Research Incorporated
• Original Assignee: Trutek Research Incorporated
• Inventors: Nowacki, Christopher, Brisson, Alfred G., Koziol, Jeffrey
• Primary Examiner(s): Howell, Kyle L.
• Assistant Examiner(s): Smith, Ruth S.
• Application Number:
  US06/561,894
• Time in Patent Office: 929 Days
• Field of Search: 128/24 A, 128/303 R, 128/303.1, 128/328, 128/395
• US Class Current: 607/27
• CPC Class Codes: A61B 17/22022 using electric discharge
• CPC Class Codes: A61B 17/225 for extracorporeal shock wave lithotripsy [ESWL], e.g. by using ultrasonic waves
• CPC Class Codes: A61F 9/00745 using mechanical vibrations, e.g. ultrasonic
• CPC Class Codes: G10K 15/06 using electric discharge

Abstract

A method and apparatus are provided for removing an eye lens having a cataract therein. An electric spark is discharged in a hydraulic medium to cause an electro-hydraulic shock which is focused on or directly conducted to the lens, thereby to liquify the lens, which is then readily flushed from position.

Claims

1. Apparatus for removing an eye lens comprising hydraulic fluid, means for supporting said hydraulic fluid on the eye, means for generating a shock wave in said hydraulic fluid, means for focusing said shock wave comprising reflector means to apply said shock wave through said hydraulic fluid to the lens of said eye to liquify said lens, said reflector means including a portion of an ellipsoid having a first focal point within said reflector means and a second focal point outside of said reflector means, said reflector means being movable to position said second focal point within said lens, the means for generating a shock wave generating said shock wave at the first focal point, and three dimensional aiming means, comprising intersecting laser beams, connected to said reflector means and aimed at said second focal point for locating said second focal point within said lens.

2. Apparatus as set forth in claim 1 and further including means for mounting an ophthalmic microscope relative to said reflector.

3. Apparatus as set forth in claim 1 and further including means for illuminating said lens supported from said reflector.

4. Apparatus as set forth in claim 1 wherein the means for generating a shock wave comprises a spark gap.

5. Apparatus as set forth in claim 1 and further including means for flushing away the liquified lens.