Combined ultrasonic emulsifier and mechanical cutter for surgery

• US 4,428,748 A
• Filed: 04/09/1980
• Issued: 01/31/1984
• Est. Priority Date: 04/09/1980
• Status: Expired due to Term

• Current Assignee: Chiron Vision Corp. (Novartis Ag)
• Original Assignee: Edward J. Murray, Gholam A. Peyman, Notilal Raichand
• Inventors: Peyman, Gholam A., Murray, Edward J., Raichand, Notilal
• Primary Examiner(s): Rosenbaum, C. Fred
• Assistant Examiner(s): KRUTER, JEROME
• Application Number:
  US06/138,711
• Time in Patent Office: 1,392 Days
• Field of Search: 128/24 A, 128/24.1, 128/305, 128/276, 128/62 A, 128/24 R, 128/908, 310/26, 433/118, 433/119, 433/122, 318/118, 318/119, 51/59 SS, 604/22, 604/46
• US Class Current: 604/22
• CPC Class Codes: A61B 2017/32007 with suction or vacuum means
• CPC Class Codes: A61B 2017/320071 with articulating means for working tip
• CPC Class Codes: A61F 9/00745 using mechanical vibrations, e.g. ultrasonic
• CPC Class Codes: A61M 1/85 with gas or fluid supply means, e.g. for supplying rinsing fluids or anticoagulants for negative pressure wound therapy A61M1/92, A61M1/94; combined with tracheal tubes A61M16/0463; dental instruments with combined rinsing and aspirating A61C17/0208

Abstract

A surgical system and apparatus which includes a handpiece with an ultrasonic motor for driving a needle or other instrument with ultrasound and further including a cutting tube or rotary motor that is mounted within the needle such that the tube can cut material which passes through openings in the tube to be engaged by the tube. Irrigation and aspiration is provided and a surgeon may selectively cut with ultrasound, or with the cutting action or with both, as required. The handpiece may be combined with a built-in light source.

Claims

1. An ophthalmic medical cutting instrument comprising a handpiece, an outer tube means, an inner tube means coaxially mounted in said outer tube means, a remote connected ultrasonic generator, an ultrasonic motor connected to said ultrasonic generator means and mounted in said handpiece producing signals in a frequency range above 20,000 cycles per second in and through the handpiece for driving said outer tube means for vibratory fragmentation of eye tissue, a separate drive means connected to said inner tube means and mounted in said handpiece for reciprocably driving said inner tube means for shearing eye tissue, and said outer tube having a side opening so that said inner tube can shear eye tissue and said ultrasonic motor means and said separate drive means can be simultaneously or individually operated.

2. A medical instrument according to claim 1 including aspiration means connected to said handpiece to provide aspiration at the cutting site.

3. A medical instrument according to claim 2 including irrigation means for supplying irrigation fluid to said cutting site through the handpiece.

4. A medical instrument according to claim 3 wherein said irrigation means supplies fluid through said handpiece.

5. A medical instrument according to claim 4 wherein said inner tube is hollow and aspiration is accomplished through said side opening and through said hollow inner tube.

6. A medical instrument according to claim 5 wherein said outer tube is formed with a second side opening through which said irrigation fluid passes after traveling through a passage between the outer surface of said inner tube and the inner surface of said outer tube.

7. A medical instrument according to claim 6 wherein said aspiration means includes a suction pump and a collection container connected with a suction tube to said hollow inner tube.

8. A medical instrument according to claim 7 including a control means connected to said pump to control the aspiration.

9. A medical instrument according to claim 8 wherein said irrigation means includes a supply container and a supply tube connected to said passage between the outer surface of said inner tube and the inner surface of said outer tube.

10. A medical instrument according to claim 9 including an on-off valve in said supply line.

11. A medical instrument according to claim 10 including a foot control having a first switch connected to control said valve, a second switch for controlling said pump and a third switch for controlling said ultrasonic generator.

12. A medical instrument according to claim 11 wherein said drive means is mounted directly in an ultrasonic transformation horn portion of the ultrasonic motor.

13. A medical instrument according to claim 12 wherein the operating tool is removable from said handpiece.

14. A medical instrument according to claim 13 wherein said separate ultrasonic generator and said drive means including means for changing the applied frequencies, and their amplitude to match variations in the chopper, and vibrating tool.

15. A medical instrument according to claim 14 including safety means to turn off said generators if they lose their grounds or the ground to the patient.