Apparatus and method for performing ophthalmic procedures

• US 6,258,111 B1
• Filed: 08/05/1999
• Issued: 07/10/2001
• Est. Priority Date: 10/03/1997
• Status: Expired due to Fees

• Current Assignee: ENGO Corporation
• Original Assignee: Scieran Technologies Inc.
• Inventors: Hughes, Greggory, Ross, Rod, Boore, James C., Reimer, Thomas E.
• Primary Examiner(s): Buiz, Michael
• Assistant Examiner(s): Trinh, Vikki
• Application Number:
  US09/369,406
• Time in Patent Office: 705 Days
• Field of Search: 606/171, 606/159, 606/170, 606/180, 604/22
• US Class Current: 606/171
• CPC Class Codes: A61B 17/32002 with continuously rotating, oscillating or reciprocating cutting instruments
• CPC Class Codes: A61B 18/14 Probes or electrodes therefor
• CPC Class Codes: A61B 2017/00115 with audible or visual output with imaging means A61B90/37, A61B34/20
• CPC Class Codes: A61B 2017/00544 pneumatically
• CPC Class Codes: A61B 2017/00973 pedal-operated
• CPC Class Codes: A61B 2018/00666 using a threshold value
• CPC Class Codes: A61B 2217/005 with suction drainage system
• CPC Class Codes: A61B 2217/007 with irrigation system
• CPC Class Codes: A61F 9/00727 Apparatus for retinal reattachment
• CPC Class Codes: A61F 9/00763 with rotating or reciprocating cutting elements, e.g. concentric cutting needles atherectomy cutting instruments A61B17/3207; endoscopic cutting instruments A61B17/320016
• 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 cutting system. The cutting system includes a cutter which has an inner sleeve that moves adjacent to an aspiration port of an outer sleeve. The inner sleeve is coupled to a source of vacuum that pulls tissue into the outer port when the inner sleeve is moved away from the port. The inner sleeve then moves across the outer port and severs the tissue in a guillotine fashion. The tip of the inner sleeve may exert a spring force that assist in the cutting action of the cutter. The cutter includes a motor which creates an oscillating translational movement of the sleeve. The motor can be controlled by a controller that is coupled a foot pedal. The foot pedal and controller can be configured so that the motor decreases speed as the pedal is depressed by the operator. The inner sleeve is coupled to an aspiration line that pulls the severed tissue out of the cutter. The level of the aspiration vacuum pressure can be controlled by a variable regulator valve. The regulator valve is coupled to the controller and the foot pedal. The foot pedal may have a switch that allows the system to operate in either a variable speed mode or a variable pressure mode. In the variable speed mode the actuation of the foot pedal changes the speed of the motor. In the variable pressure mode the actuation of the foot pedal changes the vacuum level within the aspiration line.

Claims

1. A surgical device, comprising:

a handpiece;

a motor that is attached to said handpiece;

a wobble plate that is connected to said motor;

a slider that is coupled to said wobble plate, said slider having a key surface that aligns said slider with said handpiece;

an outer sleeve that is coupled to said handpiece;

an inner sleeve that is attached to said slider and can move relative to said outer sleeve.

2. The system as recited in claim 1, further comprising a controller that aligns said wobble plate with said groove of said slider when said motor is in a start condition.

3. A surgical device, comprising:

an outer sleeve that has an aspiration port which is in fluid communication with an inner channel of said outer sleeve;

an inner sleeve that is located within said inner channel, said inner sleeve having a tip that has a circumferential slit and a preexisting bend before insertion into said inner sleeve so that said tip exerts a spring force on said outer sleeve; and

,

a motor that moves said inner sleeve relative to said outer sleeve.

4. The device as recited in claim 3, wherein said inner sleeve has a pair of slits.