Integrated phacoemulsification system

• US 5,733,256 A
• Filed: 09/26/1996
• Issued: 03/31/1998
• Est. Priority Date: 09/26/1996
• Status: Expired due to Fees

• Current Assignee: Micro Medical Devices Incorporated
• Original Assignee: Micro Medical Devices Incorporated
• Inventors: Costin, John A.
• Primary Examiner(s): Buiz, Michael
• Assistant Examiner(s): SHAI, DAPHNA
• Application Number:
  US08/721,331
• Time in Patent Office: 551 Days
• Field of Search: 604/22, 604/27, 604/28, 604/30, 604/31, 604/35, 604/43, 606/107
• US Class Current: 604/22
• CPC Class Codes: A61F 9/00745 using mechanical vibrations, e.g. ultrasonic
• CPC Class Codes: A61M 1/77 Suction-irrigation systems aspiration tips supplying fluids A61M1/85; specific for negative pressure wound therapy A61M1/92; combined with tracheal tubes A61M16/0463

Abstract

Surgical system for phacoemulsification providing infusion fluid apparatus and aspiration or evacuation apparatus to supplement the action of ultrasound vibrational energy applied to the surgical target area via a surgical handpiece. The supplemental apparatus for infusion and aspiration maintains a stable control volume within the anterior chamber of the human eye during a phacoemulsification procedure. Integration of the fluid pressure and flow sensors in a close proximity of less than 8 inches with the surgical handpieceand reduction of communicating fluid pressure and flow rate via fluid conduits allows fast system response time and accurate operation control.

Claims

1. A surgery system, comprising:

a surgical handpiece having a housing including at least one aperture interfacing with other modules in said system, a surgical operating element, and an aspiration unit including a first fluid conduit having inner surfaces which allow injection of infusion material, and a second fluid conduit having inner surfaces that allow withdrawal of suction material;

a surgical sensing module, associated with said surgical handpiece and including a pressure sensing device and a flow sensing device, fluid interfacing units connecting to said surgical handpiece, and electrical interfacing units connecting with other modules in said system, said surgical sensing module operating to monitor fluid pressure and fluid flow parameters in said surgical operating element in said surgical handpiece; and

a system control module, having a housing including at least one aperture interfacing with other modules in said system, an electronic information processing device, electrical interfacing units connecting said system control module with said surgical sensing module and said surgical handpiece, and a user interface including an input device and an output device, said system control module operating to receive information indicative of said pressure and flow parameters from said surgical sensing module and to control said surgical operating element, fluid infusion and suction in said surgical handpiece.

2. A system as in claim 1, wherein said surgical sensing module is disposed to deploy said pressure sensing device and said flow sensing device physically inside said housing for said surgical handpiece.

3. A system as in claim 1, wherein said surgical sensing module is disposed physically outside of said housing for said surgical handpiece with a distance less than eight inches from said surgical handpiece.

4. A system as in claim 1, wherein said surgical operating element in said surgical handpiece has a phacoemulsification device, said phacoemulsification device having an electrical conduit connecting to said system control module to provide communication therebetween.

5. A system as in claim 3, wherein said phacoemulsification device has a ultrasonic transducer.

6. A system as in claim 1, further including:

a fluid source disposed to connect with said system control module and said surgical hand piece, operating to provide said infusion material to said surgical handpiece; and

a vacuum source disposed to connect with said system control module and said surgical hand piece, operating to perform said suction.

7. A system as in claim 6, wherein said system control module further controls said fluid source and said vacuum source to maintain said fluid pressure and fluid flow at predetermined values in said surgical operating element in said surgical handpiece.

8. A system as in claim 1, wherein said electronic information processing device is a microprocessor.

9. A method for integrating a phacoemulsification surgical system, comprising:

integrating a phacoemulsification device in a surgical handpiece, said surgical handpiece having electrical conduits for transferring electrical power to said phacoemulsification device and communication and fluid conduits for infusion and suction;

providing a surgical sensing module for said surgical handpiece including a pressure sensing device and a flow sensing device, fluid interfacing units connecting to said fluid conduits in said surgical handpiece and other fluid units in said system, and electrical interface units connecting with other modules in said system, said surgical sensing module operating to monitor fluid pressure and fluid flow parameters in said phacoemulsification device in said surgical handpiece;

providing a system control module to said surgical system, said system control module having a housing including at least one aperture interfacing with other modules in said system, an electronic information processing device, electrical interface units connecting said system control module with said surgical sensing module and said surgical handpiece, and a user interface including an input device and an output device, said system control module operating to receive information indicative of said pressure and flow parameters from said surgical sensing module and to control said surgical operating element, fluid infusion and suction in said surgical handpiece;

interconnecting said surgical handpiece and said system control module interconnect with each other only by said electrical conduits; and

deploying said surgical sensing module relative to said phacoemulsification device at a distance of less than 8 inches.