1. A handpiece comprising:
- a first segment disposed along a longitudinal axis of the handpiece and comprising a first end, a second end, and a tubing and cord management section located on the first end; and
a second segment disposed along the longitudinal axis of the handpiece and comprising a first end and a second end, wherein the second end comprises a needle,wherein the second end of the first segment is coupled with the first end of the second segment and the first segment and the second segment are capable of rotating independently around the longitudinal axis of the handpiece.
The present invention pertains to a handpiece and more particular an ergonomic handpiece having two or more segments coupled together and capable of independently rotating around a longitudinal axis of the handpiece. In addition, one of the segments of the handpiece may have a tubing/cord management segment.
- 1. A handpiece comprising:
a first segment disposed along a longitudinal axis of the handpiece and comprising a first end, a second end, and a tubing and cord management section located on the first end; and a second segment disposed along the longitudinal axis of the handpiece and comprising a first end and a second end, wherein the second end comprises a needle, wherein the second end of the first segment is coupled with the first end of the second segment and the first segment and the second segment are capable of rotating independently around the longitudinal axis of the handpiece.
- View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15, 16, 17, 18, 19, 20)
This application claims the benefit under 35 U.S.C. § 119(e) of U.S. Provisional Patent Application No. 62/660,647, filed Apr. 20, 2018, which is incorporated herein by reference in its entirety.
The field of the invention relates to a handpiece, and more particularly to an apparatus, system and method for ergonomic handpieces.
The phacoemulsification method includes emulsifying, or liquefying, the cataractic lens with an ultrasonically driven needle before the lens is aspirated. A phacoemulsification system 5 known in the art is shown in
In preparation for operation, a sleeve 220 is typically added to the distal end of the handpiece 200, covering the proximal portion of the needle 210 (thus, exposing the distal tip of the needle), and the distal end of the irrigation pathway 295, thereby extending the pathway 295 and defining an irrigation port 222 just before the distal tip of the needle 210. The needle 210 and a portion of the sleeve 220 are then inserted through the cornea of the eye to reach the cataractic lens.
During operation, the irrigation path 295, the eye'"'"'s chamber and the aspiration line 214 form a fluidic circuit, where irrigation fluid enters the eye'"'"'s chamber via the irrigation path 295, and is then aspirated through the aspiration line 214 along with other materials that the surgeon desires to aspirate out, such as the cataractic lens. If, however, the materials, such as the cataractic lens, are too hard and massive to be aspirated through the aspiration line 214, then the distal end of the needle 210 is ultrasonically vibrated and applied to the material to be emulsified into a size and state that can be successfully aspirated.
The needle 210 is ultrasonically vibrated by applying electric power to the piezoelectric crystals 280, which in turn, cause the horn 250 to ultrasonically vibrate, which in turn, ultrasonically vibrates the needle 210. The electric power is defined by a number of parameters, such as signal frequency and amplitude, and if the power is applied in pulses, then the parameters can further include pulse width, shape, size, duty cycle, amplitude, and so on. These parameters are controlled by the control unit 102 and example control of these parameters is described in U.S. Pat. No. 7,169,123 to Kadziauskas et al.
With respect to
In order to better appreciate how the above-recited and other advantages and objects of the inventions are obtained, a more particular description of the embodiments briefly described above will be rendered by reference to specific embodiments thereof, which are illustrated in the accompanying drawings. It should be noted that the components in the figures are not necessarily to scale, emphasis instead being placed upon illustrating the principles of the invention. Moreover, in the figures, like reference numerals designate corresponding parts throughout the different views. However, like parts do not always have like reference numerals. Moreover, all illustrations are intended to convey concepts, where relative sizes, shapes and other detailed attributes may be illustrated schematically rather than literally or precisely.
The present invention relates to ergonomic handpieces and in particular a handpiece that has one or more moveable segments and/or cord and irrigation/aspiration line management.
In an embodiment, as shown in
In an embodiment, the distal segment 510 of handpiece 500 may have a needle 515 connected to a distal portion of distal segment 510. A sleeve 520 may also be coupled with handpiece 500 and at least partial surround needle 515. Needle 515 and sleeve 520 may be separate components attachable to the distal segment 510a or may be integrally coupled with the distal segment 510 of handpiece 500. Proximal segment 505 of handpiece 500 includes tubing/cord management section 525 that includes one or more port/connector 530.
The location and position of the one or more port/connector 530 helps manage the cords 540 and/or tubing 550 connected thereto. It allows the connected cords and/or tubing lay or rest against a user'"'"'s hand to keep the same in a comfortable and convenient location. The one or more port/connector 530 may all be aligned or may exit the tubing/cord management section 525 at any angle to achieve an ergonomic handpiece. In an embodiment, the port/connector 530 are between 0 degrees and 90 degrees from the longitudinal Axis A, preferably 0 degrees to 45 degrees.
According to an embodiment, a user'"'"'s hand may grip the first segment 505 with her fingers and rest the second segment 510 on the hand between the thumb and pointer finger. This positioning coupled with a swivel connector allows the user to rotate first segment 505 independent of second segment 510. Second segment 510 may remain stationary. The length of the proximal segment and distal segment may vary to achieve the desired balance of the handpiece. For example, as shown in
According to an embodiment, in
In an embodiment shown in
As shown in
In another embodiment, proximal segment 905 and distal segment 910 may be of any shape, e.g. straight, bent, curved, etc. to assist with the ergonomics of handpiece 900. An example of such a handpiece 900 is shown in
In an embodiment, the internal structures needed for activation of ultrasound for a phacoemulsification handpiece, e.g. piezoelectric crystals, may be located in either the first segment, the second segment, or both. In an embodiment, if there are more than two segments, the various internal structures may be located in any segment or in multiple segments.
In an embodiment, the needle 515 and sleeve 520 may be separate parts used for rotations and are independent of the internal components of the handpiece. In addition, one or more O-ring gaskets may be used on the proximal and distal segments to create a seal between the parts and assist with rotation. In an additional embodiment, bearings or tubing may be used alone or in combination with another similar feature, e.g. O-ring, bearing, tubing, etc., for creating a seal between the various parts of the handpiece to prevent fluids from entering or exiting the handpiece as these locations.
In an embodiment the multiple segment, e.g. the distal segment and proximal segment, may be separable to replace the distal segment with another distal segment that may have the same or different needle and/or sleeve. In addition, the proximal segment may be designed to be serializable and thus, reusable. The distal segment may be designed to be disposable or reusable.
In an embodiment, the one or more segments may be of any material suitable for the handpiece application. The segments may be titanium, plastic, rubber, or any similar material. Each segment may have its own material type or the same material type as another segment.
Although the invention has been described and illustrated in exemplary forms with a certain degree of particularity, it is noted that the description and illustrations have been made by way of example only. Numerous changes in the details of construction, combination, and arrangement of parts and steps may be made. Accordingly, such changes are intended to be included within the scope of the disclosure.