reference will now be made in detail to exemplary embodiments , examples of which are illustrated in the accompanying drawings , wherein like reference numerals refer to like elements throughout . however , known functions associated with the exemplary embodiments or detailed descriptions on the configuration and other matters which would unnecessarily obscure the present disclosure will be omitted . fig1 a - 1d are views showing a conventional ultrasonic aspirator 1 . the ultrasonic aspirator 1 is used to remove tissue from a body , such as a human body or an animal body . ultrasound energy is transmitted from the body 5 of the ultrasound aspirator 1 , down an aspirator wand 15 , and to the removable headpiece 20 . the ultrasound energy causes the headpiece 20 to vibrate and destroy tissue . as shown in fig1 a , an irrigation hose 2 can provide fluid to the body 5 , through the irrigation port 2 a , provide the fluid to the headpiece 20 to aid in the removal of destroyed tissue and reduce thermal injury to adjacent tissue caused by the heating of the headpiece 20 . the ultrasound aspirator is powered by power cables 3 . as shown in fig1 a - 1d , the ultrasonic aspirator 1 further includes a shield 10 to carry fluid for aspiration of sonicated tissue and prevent contact of the aspirator wand 15 with tissue or other objects . referring to fig1 b and 1d , there is provided a suction opening 30 at a distal , tip end of the headpiece 20 . the suction opening 30 can be used to remove liquid , tissue , and other debris in the body during use of the ultrasonic aspirator 1 . the headpiece 20 includes a working surface 25 . the working surface 25 contacts the tissue or other objects and destroys the tissue or objects by vibrating the working surface 25 . however , tissue and other objects surrounding the targeted tissue may be unintentionally destroyed by the working surface 25 the ultrasonic aspirator 1 . that is , the working areas in which the ultrasonic aspirator 1 is used are very small , and the headpiece 20 and working surface 25 is used may unintentionally contact tissue or other objects adjacent to the targeted structures . accordingly , exemplary embodiments are provided to prevent the unintentional contact between the headpiece 20 and working surface 25 of the ultrasonic aspirator 1 and untargeted tissue or other objects . fig2 a - 2d show an ultrasonic aspirator 1 according to an exemplary embodiment . the ultrasonic aspirator 1 according an exemplary embodiment includes a body 5 , an irrigation tube 2 connected to the body 5 via an irrigation port 2 a , an aspirator wand 15 extending from the body 5 , and a headpiece 20 having a working surface 25 . further , the ultrasonic aspirator 1 includes a guard 35 . as shown in fig2 b , the guard 35 extends past the headpiece 20 in a direction distal to the working surface 25 . the distance between the distal end of the working surface 25 and the guard 35 may vary depending on the procedure being performed . according to an exemplary embodiment , the guard 35 extends from the shield 10 , where a space exists between the guard 35 and the headpiece 20 and working surface 25 . the shield 10 may be formed of a plastic , a metal alloy , or any other material that does not conduct heat or ultrasonic vibrations or dampen ultrasonic vibrations . the guard 35 may also be formed of a plastic a metal alloy , or any other material that does not conduct heat or ultrasonic vibrations . the headpiece 20 and the working surface 25 may be formed of any metal or other material that conducts heat and ultrasonic vibrations . it will be understood by those skilled in the art that these materials are only exemplary , and any material suitable for the intended purpose of the structure may be used . referring to fig3 a - 3d , an ultrasonic aspirator 1 according to an exemplary embodiment is shown . the ultrasonic aspirator 1 includes a body 5 , an irrigation tube 2 connected to the body 5 via an irrigation port 2 a , an aspirator wand 15 extending from the body 5 , and a headpiece 20 having a working surface 25 . as shown in fig3 b , a guard 35 is integrally formed with the headpiece 20 and extends past the headpiece 20 in a direction distal to the body 5 . the guard 35 is formed of a material that does not conduct heat or a vibration . thus , the guard 35 protects tissue surrounding the targeted tissue from being unintentionally destroyed while using the ultrasonic aspirator 1 . referring to fig4 a - 4c , there is shown an ultrasonic aspirator 1 according to an exemplary embodiment . the ultrasonic aspirator 1 includes a body 5 , an irrigation tube 2 connected to the body 5 via an irrigation port 2 a , an aspirator wand 15 extending from the body 5 , and a headpiece 20 having a working surface 25 . as shown in fig4 b , a guard 35 is separated from the headpiece 20 by a non - conducting material 40 that does not conduct heat or ultrasonic vibrations . the non - conducting material 40 may be a plastic , an alloy , or any other material that does not conduct heat or ultrasonic vibrations . further , the guard 35 extends past the headpiece 20 in a direction distal to the body 5 . thus , the guard 35 protects tissue surrounding the targeted tissue from being unintentionally destroyed while using the ultrasonic aspirator 1 . referring to fig5 a - 5c , there is shown an ultrasonic aspirator 1 according to an exemplary embodiment . the ultrasonic aspirator 1 according an exemplary embodiment includes a body 5 , an irrigation tube 2 connected to the body 5 via an irrigation port 2 a , an aspirator wand 15 extending from the body 5 , and a headpiece 20 having a working surface 25 . further , the ultrasonic aspirator 1 includes a guard 35 attached to the shield 10 . however , the guard 35 is not limited to being connected to the shield 10 . referring to fig5 b , there is shown a light 45 integrally formed with the shield 10 . however , it will be understood that the light 45 is not limited to being integrally formed with the shield 10 . the light 45 may be provided at any location on the ultrasonic aspirator 1 to provide a user with a good visualization of the area that is targeted by the user . in this manner , a safety of the ultrasonic aspirator will be improved . the light 45 may be powered by a battery or may be connected to a constant power supply by an electrical cord . however , the light 45 is not limited to being powered in this mariner , and may be powered by any means known in the art . referring to fig6 a - 6c , there is shown an ultrasonic aspirator 1 according to an exemplary embodiment . the ultrasonic aspirator 1 according an exemplary embodiment includes a body 5 , an irrigation tube 2 connected to the body 5 via an irrigation port 2 a , an aspirator wand 15 extending from the body 5 , and a headpiece 20 having a working surface 25 . further , the ultrasonic aspirator 1 includes a guard 35 attached to the shield 10 . however , the guard 35 is not limited to being connected to the shield 10 . referring to fig6 a , there is shown an endoscope 50 located at an end of the body 5 . further , the ultrasonic aspirator 1 includes an endoscope tube 52 extending toward the headpiece 20 and terminating at the endoscope opening 53 , as shown in fig6 b and 6c , which is at a location proximal of the headpiece 20 to the body 5 . referring to fig6 b and 6c , the endoscope opening 52 is integrally formed with the shield 10 . however , it will be understood that the endoscope opening 52 is not limited to being integrally formed with the shield 10 . the endoscope opening 52 may be provided at any location on the ultrasonic aspirator 1 to provide a user with a good visualization of the area that is targeted by the user . in this manner , a safety of the ultrasonic aspirator will be improved . referring to fig7 a - 7c , an ultrasonic aspirator 1 according to an exemplary embodiment is shown . the ultrasonic aspirator 1 includes a body 5 , an irrigation tube 2 connected to the body 5 via an irrigation port 2 a , an aspirator wand 15 extending from the body 5 , and a headpiece 20 having a working surface 25 . as shown in fig7 b and 7c , a guard 35 is integrally formed with the headpiece 20 and extends past the headpiece 20 in a direction distal to the body 5 . as shown in fig7 b and 7c , there is provided a suction opening 30 at a distal end of the headpiece 20 . the suction opening 30 can be used to remove liquid , tissue , and other debris in the body during use of the ultrasonic aspirator 1 . in this manner , the guard 35 protects tissue surrounding the targeted tissue from being unintentionally destroyed while using the ultrasonic aspirator 1 , while debris generated during the procedure may be aspirated using the suction opening 30 . referring to fig8 a - 8d , there is shown an ultrasonic aspirator 1 according to an exemplary embodiment . the ultrasonic aspirator 1 according an exemplary embodiment includes a body 5 , an irrigation tube 2 connected to the body 5 via an irrigation port 2 a , an aspirator wand 15 extending from the body 5 , a headpiece 20 having a working surface 25 , and a suction opening 30 . further , as shown in fig8 b and 8c , a light 45 integrally formed with the shield 10 . it will be understood that the light 45 is not limited to being integrally formed with the shield 10 . the light 45 may be provided at any location on the ultrasonic aspirator 1 to provide a user with a good visualization of the area that is targeted by the user . in this manner , a safety of the ultrasonic aspirator will be improved . according to an exemplary embodiment , light from the light 45 is directed toward the working surface 25 of the headpiece 20 , as shown in fig8 b - 8d . further , the light 45 may be powered by a battery or may be connected to a constant power supply by an electrical cord . however , the light 45 is not limited to being powered in this manner , and may be powered by any means known in the art . referring to fig9 a - 9c , there is shown an ultrasonic aspirator 1 according to an exemplary embodiment . the ultrasonic aspirator 1 according an exemplary embodiment includes a body 5 , an irrigation tube 2 connected to the body 5 via an irrigation port 2 a , an aspirator wand 15 extending from the body 5 , a headpiece 20 having a working surface 25 , and a suction opening 30 . further , as shown in fig9 a , there is provided endoscope 50 located at an end of the body 5 . according to an exemplary embodiment , the ultrasonic aspirator 1 includes an endoscope tube 52 extending toward the headpiece 20 and terminating at the endoscope opening 53 , as shown in fig9 b and 9c , which is at a location proximal of the headpiece 20 to the body 5 . the endoscope opening 52 is integrally formed with the shield 10 . however , it will be understood that the endoscope opening 52 is not limited to being integrally formed with the shield 10 . the endoscope opening 52 may be provided at any location on the ultrasonic aspirator 1 to provide a user with a good visualization of the area that is targeted by the user . in this manner , a safety of the ultrasonic aspirator will be improved . fig1 a - 10c show an ultrasonic aspirator according to an exemplary embodiment . the ultrasonic aspirator 1 includes a body 5 , an irrigation tube 2 connected to the body 5 via an irrigation port 2 a , an aspirator wand 15 extending from the body 5 , and a headpiece 20 having a working surface 25 . as shown in fig1 b and 10c , there is provided a suction opening 30 on one side of the headpiece 20 , the suction opening 30 being proximal of a distal end of the headpiece 20 and working surface 25 with respect to the body 5 . according to an exemplary embodiment , the suction opening 30 provided at the proximal location prevents damage from occurring to areas that are not targeted by the user . that is , when the working surface 25 of the headpiece 20 removes tissue or other debris , the debris is sucked through suction opening 30 . in the conventional art , the suction opening 30 is provided on a distal end of the headpiece 20 and working surface 25 , as shown in fig1 b and 1d . in the conventional art , a user must extend the headpiece 20 toward the debris . however , this can cause unintentional contact between the headpiece 20 and objects that have not been targeted . thus , by having the suction opening 30 provided at a position proximal of a distal end of the headpiece 20 with respect to the body 5 , such unintentional contact can be avoided . further , although not shown , the ultrasonic aspirator 1 of fig1 a - 10c may include a guard 35 . it will be understood that the guard could be integrally formed with the headpiece 20 or in any other manned , according to the exemplary embodiments . referring to fig1 a - 11c , there is provided an ultrasonic aspirator 1 according to an exemplary embodiment . while not shown , it will be understood that the ultrasonic aspirator 1 may include a body 5 , an irrigation tube 2 connected to the body 5 via an irrigation port 2 a , and an aspirator wand 15 extending from the body 5 . as shown in each of fig1 a - 11c , a shield 10 is provided to cover the aspirator wand 15 and a headpiece 20 having a working surface 25 extending from the shield 10 . the headpiece 20 may include a sensor to determine when the density of an object is changed . that is , a user may be using the ultrasonic aspirator in an environment having objects , such as tissues , of various densities . according to an exemplary embodiment , there is provided a pressure sensor 55 a , an ultrasound sensor 55 b , or a displacement sensor 55 c on the headpiece 20 . the sensor determines when the density of an object which the working surface 25 is in contact with changes . once the sensor determines that the density of the object changes , the ultrasonic aspirator may be turned off , or a mode of the ultrasonic aspirator 1 may be switched . in this manner , a user can prevent unintentionally damaging tissue surrounding the targeted tissue . it will be understood that a pressure sensor 55 a , an ultrasound sensor 55 b , or a displacement sensor 55 c are merely exemplary embodiments , and the sensor may be any sensor known in the art to determine a change in density of an object which the working surface 25 is contacting . fig1 a - 12c are views showing a conventional ultrasonic aspirator 1 having a headpiece 20 with a working surface 25 containing projections 25 a . the projections 25 a allow a user to use the ultrasonic aspirator 1 as a cutting instrument in addition to using the vibration of the headpiece 20 to destroy tissue . similar to the conventional ultrasonic aspirator 1 of fig1 a - 1d , the ultrasonic aspirator 1 shown in fig1 a - 12c includes a body 5 , an aspirator wand 15 ( not shown ), a shield 10 covering the aspirator wand 15 , and an irrigation hose connected to the body 5 via an irrigation port 2 a . the headpiece 20 having the working surface 25 with projections 25 a is removably attached to a distal end of the aspirator wand . referring to fig1 a - 13d , there is shown an ultrasonic aspirator 1 according to an exemplary embodiment . the ultrasonic aspirator 1 includes a body 5 , an aspirator wand 15 ( not shown ), a shield 10 covering the aspirator wand 15 , and an irrigation hose connected to the body 5 via an irrigation port 2 a . a headpiece 20 having a working surface 25 with projections 25 a is removably attached to a distal end of the aspirator wand 15 . the projections 25 a allow the use of the ultrasonic aspirator 1 in a knifelike manner to cut objects and other debris , in addition to using the vibration of the headpiece 20 to destroy tissue . as shown in fig1 b - 13d , the headpiece 20 includes a guard 35 integrally formed with the headpiece 20 according to an exemplary embodiment . as shown in fig1 b , the guard 35 extends past the headpiece 20 in a direction distal to the body 5 . thus , the guard 35 protects tissue surrounding the targeted tissue from being unintentionally destroyed while using the ultrasonic aspirator 1 . fig1 a - 14d show an ultrasonic aspirator 1 according to an exemplary embodiment . similar to the embodiment shown in fig1 a - 13d , the ultrasonic aspirator 1 includes a body 5 , an aspirator wand 15 ( not shown ), a shield 10 covering the aspirator wand and an irrigation hose connected to the body 5 via an irrigation port 2 a . a headpiece 20 having a working surface 25 with knifelike projections 25 a is removably attached to a distal end of the aspirator wand 15 . as shown in fig1 b , the guard 35 extends from the shield 10 and is separated from the headpiece 20 by a space . as shown in fig1 b and 13 d , the guard 35 extends past the headpiece 20 in a direction distal to the body 5 and does not contact the headpiece 20 . referring to fig1 a and 15b , a headpiece 20 according to an exemplary embodiment is shown . the headpiece 20 includes a working surface 25 that is curved and a guard 35 extending past the headpiece 20 in a direction distal to the body 5 and following a contour of the headpiece 20 . however , exemplary embodiments are not limited to this shape . as shown in fig1 a , the working surface 25 of the headpiece 20 has a width greater than the width of the headpiece 20 . this configuration provides a large contact surface for the working surface 25 to remove tissue . further , the guard 35 has a same or greater width as the working surface 35 a and protects tissue outside the targeted area from being contacted by the working surface 35 a . fig1 shows a headpiece 20 have a working surface 25 according to an exemplary embodiment . the working surface 25 is flexible to enable the headpiece 20 to access nonlinear access ports and to contact objects that are not easily accessible in an area of the body . the working surface 25 may include hinges or may be formed of a material that is malleable along an entire surface . however , exemplary embodiments are not limited thereto . further , the flexible area is not limited to the working surface 25 , and the flexible area may include a part or the entirety of the headpiece 20 . in addition , while not shown , a guard may be provided for the headpiece 20 . the guard may extend past the headpiece 20 and working surface 25 in a direction distal to the body 5 and does not contact the headpiece 20 or working surface 25 . further , the guard may be rigid or may be flexible to follow the movement of the flexible working surface 25 and headpiece 20 . the flexible portion of the headpiece 20 moves according to an input by a user . while not shown , an exemplary embodiment includes handles or another input mechanism by which to manipulate the flexible portion of the headpiece 20 . the headpiece 20 may be manipulated such that the headpiece 20 can be moved in a three - hundred - sixty degree rotation around an axis of the headpiece 20 . in this manner , the surgeon may manipulate the headpiece 20 to access areas of the surgical area that would otherwise be difficult to access with a rigid or straight headpiece 20 . it will be understood that if the ultrasonic aspirator 1 includes a guard 35 , the guard 35 may bend along with the headpiece 20 or the guard 35 remain rigid with the headpiece 20 bending by the user &# 39 ; s input . referring to fig1 a - 47d , there is shown an ultrasonic aspirator 1 according to an exemplary embodiment . the ultrasonic aspirator 1 includes a body 5 , an irrigation tube 2 connected to the body 5 via an irrigation port 2 a , an aspirator wand 15 ( not shown ) extending from the body 5 , a shield 10 covering the aspirator wand 15 , and a headpiece 20 having a working surface 25 . the working surface 25 of fig1 b - 17d include projections 25 a . however , the working surface 25 a is not limited thereto . as shown in fig1 b , a guard 35 extends from the shield 10 to extend past the headpiece 20 and working surface 25 in a direction distal to the body 5 and does not contact the headpiece 20 or working surface 25 . however , the guard 35 is not limited to this configuration , and may be any configuration according to the exemplary embodiments disclosed herein . guard 35 includes a stimulator or sensor 35 a at a distal end of the guard 35 and a stimulator or sensor wire 35 b extending from the stimulator 35 a . the stimulator or sensor 35 a receives as input a pressure , vibration , electrical or other input of adjacent structures , including an adjacent nerve , during the removal of tissue and other debris . when the stimulator / sensor 35 a receives the input from an adjacent structure , a signal is sent from the stimulator 35 a down the stimulator wire 35 b to a user interface ( not shown ). in this manner , the user is made aware of an adjacent neural structure to the area that debris and tissue are being removed . this allows the user to avoid this structure , which provides an added safety measure during aspiration . in addition an electrical signal could be sent from an external source ( not shown ) from the stimulator wire to the stimulator which if adjacent to a neural structure could result in electrical stimulation of that structure which can be detected by sensors placed on or in skin , muscles , subcutaneous tissue or other manner known in the art in a distal area of the body enervated by that neural structure . in addition , the stimulator 35 a provides additional information to a user , especially a user new to the aspiration technique , and helps prevent trauma from an unintentional contact between the headpiece 20 and the adjacent structure . although the stimulator 35 a is provided at a distal end of the guard 35 , the stimulator 35 a is not limited thereto , and may be provided at any location along the guard 35 to provide information of an adjacent object to the user . further , although a stimulator wire 35 b is provided to send a signal from the stimulator 35 a to a user interface , exemplary embodiments are not limited thereto . the signal may be sent in any manner known in the art , including , but not limited to , using a wireless signal . this integrated nerve stimulator / sensor can be added to all shields in this application . as shown in fig1 a and 18b , there is provided a conventional ultrasonic aspirator 1 having a body 5 and a shield 10 , where the body 5 is angled . referring to fig1 b , there is provided an ultrasonic aspirator 1 according to an exemplary embodiment having a body 5 and a shield 10 , where the shield 10 and wand 15 are angled . according to an exemplary embodiment , the angled portion of the shield 10 and the wand 15 may be of varying length and diameter . fig1 shows an exemplary embodiment of an ultrasonic aspirator 1 having a working area 25 which includes a grasper . the ultrasonic aspirator 1 further includes a guard 35 extending past the headpiece 20 in a direction distal to the body 5 , an endoscope 50 , and a light 45 . the grasper on the working area 25 is operated using the finger notch 60 and the grasper handle 61 provided on the body 5 . the endoscope 50 and the light 45 provide a user with a better visualization field , which improves performance of the ultrasonic aspirator 1 and improves safety . further , the guard 35 protects adjacent tissue from the grasper provided on the working area 25 . fig2 a shows a conventional kerrison - ronguer action ultrasonic aspirator 1 . the base 5 includes handles 65 to manipulate the working area 25 . fig2 b shows a kerrison - ronguer ultrasonic aspirator 1 according to an exemplary embodiment , further including a guard 35 , an endoscope 50 having an endoscope opening 52 , and a light 45 . the ultrasonic aspirator 1 may include one or more of the guard 35 , the endoscope 50 , or the light 45 . further , the guard 35 extending past the headpiece 20 in a direction distal to the body 5 . referring to fig2 , there is shown all ultrasonic aspirator 1 having a body 5 , an irrigation hose 2 connected to the body 5 , a shield 10 covering an aspirator and ( not shown ), and a headpiece 20 connected to the aspirator wand . in addition , the ultrasonic aspirator 1 includes an integrated retractor 70 provided at an end of the ultrasonic aspirator 1 in a direction distal of the body 5 . the retractor 70 allows the user to move structures during aspiration . according to an exemplary embodiment , the retractor 70 may be used to retract a nerve root during spinal disc removal . however , exemplary embodiments are not limited thereto . although exemplary embodiments of the disclosure have been shown and described , it would be appreciated by those skilled in the art that changes may be made in these exemplary embodiments without departing from the principles and spirit of the exemplary embodiments , the scope of which is defined in the claims and their equivalents .
an ultrasonic aspirator includes a body , an aspirator wand extending from the body , a shield to cover the aspirator wand , a removable headpiece removably attached to the aspirator wand , and a guard extending past an end of the headpiece in a direction distal to the body . the aspirator also includes a generator or a detector to generate or detect electrical pulses , light sources , endoscopy , modified body angles , image navigation integration for improved visualization and optimization of the surgical field .