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Method for using microelectromechanical systems to generate movement in a phacoemulsification handpiece

a microelectromechanical system and handpiece technology, applied in the field of ultrasonic handpieces, can solve the problems of tissue damage, multiple limitations placed on ultrasound handpieces when employing piezoelectric crystals, and prolonging the time of the procedur

Inactive Publication Date: 2011-09-08
ABBOTT MEDICAL OPTICS INC
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Benefits of technology

The present invention is about a device called a phaco handpiece that can be used in eye surgery. The device has a needle and special MEMS devices that are attached to the needle. When a voltage or current is applied to the MEMS devices, they cause the needle to move in different directions. The invention also includes a vitrectomy cutter that has a needle body with a blade and a microelectromechanical system device that can move the blade back and forth. This technology allows for more precise and safe eye surgery.

Problems solved by technology

The technical problem addressed in this patent text is the limitations of current ultrasound handpieces used in ophthalmic procedures due to their reliance on piezoelectric crystals. These handpieces are heavier than desired, require frequent tuning, and produce potentially harmful levels of heat during use. Therefore, there is a need for a new handpiece design that overcomes these issues.

Method used

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  • Method for using microelectromechanical systems to generate movement in a phacoemulsification handpiece
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  • Method for using microelectromechanical systems to generate movement in a phacoemulsification handpiece

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Embodiment Construction

[0017]Reference will now be made in detail to embodiments of the invention, examples of which are illustrated in the accompanying drawings. While the invention will be described in conjunction with the embodiments, it will be understood that they are not intended to limit the invention to those embodiments. On the contrary, the invention is intended to cover alternatives, modifications, and equivalents, which may be included within the spirit and scope of the invention as defined by the appended claims.

[0018]In FIG. 1 a cross-section along the longitudinal axis of a portion of an ultrasound phaco handpiece 100 known in the art is shown. Generally, handpiece 100 includes a needle 110, defining a lumen that is operatively coupled with an aspiration pump (not shown), forming an aspiration line 114. The proximal end of needle 110 is coupled with horn 150, which has its proximal end coupled with a set of piezoelectric crystals 180, shown as three rings. Horn 150, crystals 180, and a prox...

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Abstract

The present invention relates to a phacoemulsification handpiece, comprising a needle and a microelectromechanical system (MEMS) device, wherein the needle is coupled with the MEMS device. The phacoemulsification handpiece may further comprise a horn, wherein the horn is coupled with the needle and the MEMS device. The MEMS device is capable of generating movement of the needle in at least one direction, wherein at least one direction is selected from the group consisting of transversal, torsional, and longitudinal. The present invention also relates to a method of generating movement, comprising providing a phacoemulsification handpiece, wherein the handpiece comprises a needle and one or more MEMS devices; applying a voltage or current to the one or more MEMS devices, wherein the MEMS devices are coupled with the needle; and moving the needle in at least one direction. The present invention also relates to a vitrectomy cutter comprising one or more MEMS devices.

Description

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Claims

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Application Information

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Owner ABBOTT MEDICAL OPTICS INC
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