Electrosurgical device and method of use

Abstract

To provide an electrosurgical device and a method for illuminating a surgical site during an electrosurgical treatment.SOLUTION: An electrosurgical device 112 includes a housing having a proximal end and a distal end, an electrosurgical electrode 128 extending from the distal end of the housing in a distal direction, a plurality of light sources in the housing, and an optical lens assembly including a plurality of optical constituents that are (i) mutually coupled at the distal end of an optical lens assembly and (ii) separate from each other at the proximal end of the optical lens assembly. Each of the optical constituents includes a proximal reflection surface and a distal transmission surface. Each of the proximal reflection surfaces extends distally from each light source and has a non-spherical shape configured to virtually collimate light reflected by the proximal reflection surface. Each of the distal transmission surfaces is configured to distally output light from the optical constituents.SELECTED DRAWING: Figure 7A

Description

Technical Field

[0001] (Cross - Reference to Related Applications) This application claims the benefit of U.S. Provisional Application No. 63 / 076,089, filed on September 9, 2020, and U.S. Provisional Application No. 63 / 211,876, filed on June 17, 2021, the entire contents of which are incorporated herein by reference.

[0002] The present disclosure generally relates to electrosurgical devices, and more particularly to electrosurgical devices and methods for illuminating a surgical site during an electrosurgical procedure.

Background Art

[0003] Electrosurgery involves applying a high - frequency (RF) current (also referred to as electrosurgical energy) to biological tissue to cut, coagulate, or modify the biological tissue during an electrosurgical procedure. Specifically, an electrosurgical generator generates a current and provides it to an active electrode, which applies the current (and thus, power) to the tissue. The current passes through the tissue and returns to the generator via a return electrode plate (also referred to as a "dispersion electrode"). As the current passes through the tissue, the impedance of the tissue converts a portion of the current into thermal energy (e.g., via the principle of resistive heating), and this thermal energy raises the temperature of the tissue and induces modifications to the tissue (e.g., cutting, coagulating, removing, and / or sealing of the tissue). [[ID=३४]]

Summary of the Invention

[0004] In one embodiment, an electrosurgical device is described. The electrosurgical device includes a housing having a proximal end and a distal end. The electrosurgical device also includes an electrosurgical electrode extending distally from the distal end of the housing and a plurality of light sources within the housing. The plurality of light sources generate light ​​​​​​​​​​ It can be configured to do so.

[0005] In addition, the electrosurgical device can include an optical lens assembly having a proximal end and a distal end. It can include a plurality of optical components that are (i) coupled to each other at the distal end of the optical lens assembly and (ii) spaced apart from each other at the proximal end of the optical lens assembly. Each optical component is optically coupled to a respective one of the plurality of light sources. Each optical component includes a proximal reflecting surface that extends distally from the respective light source optically coupled to the optical component, and a distal transmissive surface at the distal end of the optical lens assembly. The proximal reflecting surface is configured to reflect the light emitted by each respective light source toward the distal end. The proximal reflecting surface can have an aspherical shape configured to substantially collimate the light reflected by the proximal reflecting surface. The distal transmissive surface is configured to output light in a distal direction from the optical component.

[0006] In another embodiment, a process for operating an electrosurgical device is described. This process includes providing an electrosurgical device at block 2410. The electrosurgical device can include a housing having a proximal end and a distal end. The electrosurgical device can also include an electrosurgical electrode extending distally from the distal end of the housing and a plurality of light sources in the housing. The plurality of light sources can be configured to generate light.

[0007] In addition, the electrosurgical device can include an optical lens assembly having a proximal end and a distal end. The optical lens assembly can include a plurality of optical components that are (i) coupled to each other at the distal end of the optical lens assembly and (ii) spaced apart from each other at the proximal end of the optical lens assembly. which are coupled to each other, and (ii) are spaced apart from each other at the proximal end of the optical lens assembly and can include a plurality of optical components. Each optical component is optically coupled to a respective one of the plurality of light sources. Each optical component includes a proximal reflecting surface extending distally from the respective light source optically coupled to the optical component, and a distal transmissive surface at the distal end of the optical lens assembly. The proximal reflecting surface is configured to reflect the light emitted by the respective light source toward the distal end. The proximal reflecting surface can have an aspherical shape configured to substantially collimate the light reflected by the proximal reflecting surface. The distal transmissive surface is configured to output the light distally from the optical component. The process also includes emitting light by a plurality of light sources. After emitting the light, the process includes (i) reflecting the light substantially collimated by the proximal reflecting surface of the optical component toward the distal end, and (ii) outputting the light distally by the distal transmissive surface of the optical component, thereby transmitting the light through each optical component. The process also includes rotating the shaft relative to the housing to cause a corresponding rotation of the electrosurgical electrode relative to the housing. The process further includes supplying electrosurgical energy from the shaft to the electrosurgical electrode. The novel features believed to be characteristic of the exemplary embodiments are set forth in the appended claims. However, the exemplary embodiments and their preferred usage, further objectives and descriptions are set forth in the following detailed description in connection with the accompanying drawings.

[0008] [[ID=

[23] ]

[0009]

[0010] ​​​​​​​​​​will be best understood by reference to the following detailed description of exemplary embodiments of the present disclosure when read in conjunction with the accompanying drawings. BRIEF DESCRIPTION OF THE DRAWINGS

[0011]

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[0012] The disclosed embodiments are presented herein as examples, although some, but not all, of the disclosed embodiments are shown. This is more fully described below with reference to the accompanying drawings, in which: Examples may be illustrated and should not be construed as being limited to the examples set forth herein. Rather, these examples are provided so that this disclosure will be thorough and complete, and will convey the scope of the disclosure to those skilled in the art. It is explained so that it is fully conveyed to the user.

[0013] The terms "about" or "substantially" in connection with amounts or measurements described herein The term does not require that the recited property, parameter or value be achieved exactly, for example, deviations or variations, including tolerances, measurement errors, measurement accuracy limits, and other factors known to those skilled in the art. This means that the behavior can occur in an amount that does not eliminate the effect that the feature is intended to provide. do.

[0014] As described above, electrosurgical devices apply electrosurgical energy to tissue from electrosurgical electrodes. Electrical energy provided by an electrosurgical generator can be used to perform To help the surgeon better visualize the surgical site while performing electrosurgery, The surgical device includes features that provide for distal transmission of light to illuminate the surgical site. For example, electrosurgical devices may use a laser to illuminate the surgical site along with an electrosurgical electrode. and / or including one or more optical features that transmit light to the surroundings of the electrosurgical electrode. This can be done.

[0015] It may be advantageous to provide an optical feature for transmitting light to an electrosurgical device. However, the optical feature occupies space within or on the electrosurgical device. This can pose any number of problems. For example, to provide greater access to a small surgical cavity and / or to limit or reduce the size of the electrosurgical device to mitigate obstructing the line of sight to the electrosurgical electrode and / or the surgical site. Consideration of these space constraints can be more critical in embodiments where the electrosurgical device includes other space-occupying features, such as features for evacuating surgical smoke from the surgical site.

[0016] Another challenge is achieving the quality of light emission in the relatively small space available. In fact, it may be desirable to provide light around the electrosurgical electrode. Also, it may be advantageous to do so while reducing the shadow cast by the electrosurgical electrode. Additionally, it may be advantageous to reduce light loss along the light transmission path between the light source and the point where light exits the electrosurgical device. For example, reducing light loss can help

[0017] reduce the power requirements and / or heat for operating the light source. The present application provides an optical lens assembly that can be incorporated

[0018] Referring now to FIG. 1, an electrosurgical system 100 according to one embodiment As shown in 1, the electrosurgical system 100 includes an electrosurgical generator 110 and an electrosurgical device 112. Generally, the electrosurgical generator 110 can generate electrosurgical energy suitable for performing electrosurgery on a patient. For example, the electrosurgical generator 110 can include an electrode converter circuit 114 that can convert grid power into electrosurgical energy such as high-frequency (RF) output power. As an example, the power converter circuit 114 can include one or more components (such as one or more transformers) that can control the voltage, current, and / or frequency of the electrosurgical energy. In an embodiment, the electrosurgical generator 110 can include a user interface 116 that can receive one or more inputs from a user and / or provide one or more outputs to the user. As an example, the user interface 116 can include one or more buttons, one or more switches, one or more dials, one or more keypads, one or more touchscreens, one or more display screens, one or more indicator lights, one or more speakers, and / or one or more tactile output devices. In one embodiment, the user interface 116 can be operable to select one operating mode from a plurality of operating modes for the electrosurgical generator 110. As an example, the operating modes can include a cutting mode, a coagulation mode, a removal mode, and / or a sealing mode. Combinations of these waveforms can generate a mixed mode. As shown in 1, the electrosurgical system 100 includes an electrosurgical generator 110 and an electrosurgical device 112. Generally, the electrosurgical generator 110 can generate electrosurgical energy suitable for performing electrosurgery on a patient. For example, the electrosurgical generator 110 can include an electrode converter circuit 114 that can convert grid power into electrosurgical energy such as high-frequency (RF) output power. As an example, the power converter circuit 114 can include one or more components (such as one or more transformers) that can control the voltage, current, and / or frequency of the electrosurgical energy. In an embodiment, the electrosurgical generator 110 can include a user interface 116 that can receive one or more inputs from a user and / or provide one or more outputs to the user. As an example, the user interface 116 can include one or more buttons, one or more switches, one or more dials, one or more keypads, one or more touchscreens, one or more display screens, one or more indicator lights, one or more speakers, and / or one or more tactile output devices. In one embodiment, the user interface 116 can be operable to select one operating mode from a plurality of operating modes for the electrosurgical generator 110. As an example, the operating modes can include a cutting mode, a coagulation mode, a removal mode, and / or a sealing mode. Combinations of these waveforms can generate a mixed mode. As shown in 1, the electrosurgical system 100 includes an electrosurgical generator 110 and an electrosurgical device 112. Generally, the electrosurgical generator 110 can generate electrosurgical energy suitable for performing electrosurgery on a patient. For example, the electrosurgical generator 110 can include an electrode converter circuit 114 that can convert grid power into electrosurgical energy such as high-frequency (RF) output power. As an example, the power converter circuit 114 can include one or more components (such as one or more transformers) that can control the voltage, current, and / or frequency of the electrosurgical energy.

[0019] In an embodiment, the electrosurgical generator 110 can include a user interface 116 that can receive one or more inputs from a user and / or provide one or more outputs to the user. As an example, the user interface 116 can include one or more buttons, one or more switches, one or more dials, one or more keypads, one or more touchscreens, one or more display screens, one or more indicator lights, one or more speakers, and / or one or more tactile output devices. In one embodiment, the user interface 116 can be operable to select one operating mode from a plurality of operating modes for the electrosurgical generator 110. As an example, the operating modes can include a cutting mode, a coagulation mode, a removal mode, and / or a sealing mode. Combinations of these waveforms can generate a mixed mode. As shown in 1, the electrosurgical system 100 includes an electrosurgical generator 110 and an electrosurgical device 112. Generally, the electrosurgical generator 110 can generate electrosurgical energy suitable for performing electrosurgery on a patient. For example, the electrosurgical generator 110 can include an electrode converter circuit 114 that can convert grid power into electrosurgical energy such as high-frequency (RF) output power. As an example, the power converter circuit 114 can include one or more components (such as one or more transformers) that can control the voltage, current, and / or frequency of the electrosurgical energy. In an embodiment, the electrosurgical generator 110 can include a user interface 116 that can receive one or more inputs from a user and / or provide one or more outputs to the user. As an example, the user interface 116 can include one or more buttons, one or more switches, one or more dials, one or more keypads, one or more touchscreens, one or more display screens, one or more indicator lights, one or more speakers, and / or one or more tactile output devices. In one embodiment, the user interface 116 can be operable to select one operating mode from a plurality of operating modes for the electrosurgical generator 110. As an example, the operating modes can include a cutting mode, a coagulation mode, a removal mode, and / or a sealing mode. Combinations of these waveforms can generate a mixed mode. As shown in 1, the electrosurgical system 100 includes an electrosurgical generator 110 and an electrosurgical device 112. Generally, the electrosurgical generator 110 can generate electrosurgical energy suitable for performing electrosurgery on a patient. For example, the electrosurgical generator 110 can include an electrode converter circuit 114 that can convert grid power into electrosurgical energy such as high-frequency (RF) output power. As an example, the power converter circuit 114 can include one or more components (such as one or more transformers) that can control the voltage, current, and / or frequency of the electrosurgical energy. In an embodiment, the electrosurgical generator 110 can include a user interface 116 that can receive one or more inputs from a user and / or provide one or more outputs to the user. As an example, the user interface 116 can include one or more buttons, one or more switches, one or more dials, one or more keypads, one or more touchscreens, one or more display screens, one or more indicator lights, one or more speakers, and / or one or more tactile output devices.

[0020] In one embodiment, the user interface 116 can be operable to select one operating mode from a plurality of operating modes for the electrosurgical generator 110. As an example, the operating modes can include a cutting mode, a coagulation mode, a removal mode, and / or a sealing mode. Combinations of these waveforms can generate a mixed mode. As shown in 1, the electrosurgical system 100 includes an electrosurgical generator 110 and an electrosurgical device 112. Generally, the electrosurgical generator 110 can generate electrosurgical energy suitable for performing electrosurgery on a patient. For example, the electrosurgical generator 110 can include an electrode converter circuit 114 that can convert grid power into electrosurgical energy such as high-frequency (RF) output power. As an example, the power converter circuit 114 can include one or more components (such as one or more transformers) that can control the voltage, current, and / or frequency of the electrosurgical energy. In an embodiment, the electrosurgical generator 110 can include a user interface 116 that can receive one or more inputs from a user and / or provide one or more outputs to the user. As an example, the user interface 116 can include one or more buttons, one or more switches, one or more dials, one or more keypads, one or more touchscreens, one or more display screens, one or more indicator lights, one or more speakers, and / or one or more tactile output devices. In one embodiment, the user interface 116 can be operable to select one operating mode from a plurality of operating modes for the electrosurgical generator 110. As an example, the operating modes can include a cutting mode, a coagulation mode, a removal mode, and / or a sealing mode. Combinations of these waveforms can generate a mixed mode.​ It can also be formed for use. In one embodiment, the operating mode can correspond to each waveform for electrosurgical energy Therefore, in this embodiment, the electrosurgical generator 110 can have a waveform selected from a plurality of waveforms based at least in part on the operating mode selected using the user interface 116. to generate electrosurgical energy.

[0021] The electrosurgical generator 110 may also include one or more sensors 118 capable of sensing one or more states related to the electrosurgical energy and / or the target tissue. By way of example, the sensor 118 can include one or more current sensors, one or more voltage sensors, one or more temperature sensors, and / or one or more bioimpedance sensors. Among the examples, the electrosurgical generator 110 can additionally or alternatively generate a predetermined amount of electrosurgical energy (e.g., power) and / or electrosurgical energy having a waveform selected from a plurality of waveforms based on one or more parameters related to the state sensed by the sensor 118.

[0022] In one example, the electrosurgical energy can have a frequency greater than about 100 kilohertz (kHz) to reduce (or avoid) stimulating the muscle and / or nerve near the target tissue. In another example, the electrosurgical energy can have a frequency of about 300 kHz to about 500 kHz.

[0023] In FIG. 1, the electrosurgical generator 110 connects the electrosurgical generator 110 to the electrosurgical device 112 also includes a connector 120 that can facilitate coupling thereto. For example, an electrosurgical device 112 can include a power cord 122 having a plug, and the plug can be coupled to the socket of the connector 120 of the electrosurgical generator 110. In this arrangement, the electrosurgical generator 110 can supply electrosurgical energy to the electrosurgical device 112 through the coupling between the connector 120 of the electrosurgical generator 110 and the power cord 122 of the electrosurgical device 112.

[0024] As shown in FIG. 1, the electrosurgical device 112 can include a housing 123. The housing 123 can be an elongated structure in which and / or on which components of the electrosurgical device 112 can be disposed. In some embodiments, the housing 1 23 can be an integral monolithic structure. In other embodiments, the housing 1 23 can include a plurality of structures coupled to each other.

[0025] In FIG. 1, the housing 123 includes a handle 124 that defines an internal bore, a shaft 126 that extends distally from the handle 124, and an electrosurgical electrode 128 coupled to the shaft 126. Generally, the handle 124 can be configured to facilitate a user to grip and operate the electrosurgical device 112 while performing an electrosurgical procedure. For example , the handle 124 can have a shape and / or size that can facilitate a user to perform an electrosurgical procedure by operating the electrosurgical device 112 with one hand. In one embodiment, the handle 124 allows the user to hold the electrosurgical device in a pen-grip format ​​​​​​It can have a shape and / or size that facilitates holding the surgical device 122 (e.g., the electrosurgical device 112 can be an electrosurgical pencil). For example, the handle 124 and / or the shaft 126 can be composed of one or more materials that are electrical insulators (e.g., a plastic material). This can facilitate insulating the user from the electrosurgical energy flowing through the electrosurgical device 112 while performing electrosurgery.

[0026] In addition, for example, the handle 124 and / or the shaft 126 can be composed of one or more materials that are electrical insulators (e.g., a plastic material). This can facilitate insulating the user from the electrosurgical energy flowing through the electrosurgical device 112 while performing electrosurgery. For example, the handle 124 and / or the shaft 126 can be composed of one or more materials that are electrical insulators (e.g., a plastic material). This can facilitate insulating the user from the electrosurgical energy flowing through the electrosurgical device 112 while performing electrosurgery. While performing electrosurgery, it can be facilitated to insulate the user from the electrosurgical energy flowing through the electrosurgical device 112. While performing electrosurgery, it can be facilitated to insulate the user from the electrosurgical energy flowing through the electrosurgical device 112.

[0027] In some embodiments, the shaft 126 can be coupled to the handle 124 in a fixed and immovable manner. This can simplify manufacturing and potentially reduce manufacturing costs (e.g., by eliminating slip ring electrical contacts and / or sliding electrical contacts), which may otherwise require compensating for the movement of the shaft 126 and the handle 124 relative to each other. In one example, the handle 124 and the shaft 126 can be formed as a single monolithic structure such that the shaft 126 and the handle 124 are fixed and immovable relative to each other. In another example, the handle 124 and the shaft 126 can be fixedly coupled to each other by welding, adhesive bonding, and / or another type of bonding that prevents movement between the handle 124 and the shaft 126. For example, it can simplify the electrical connection that may otherwise require compensating for the movement of the shaft 126 and the handle 124 relative to each other, thus simplifying manufacturing and reducing manufacturing costs (e.g., by eliminating slip ring electrical contacts and / or sliding electrical contacts). For example, it can simplify the electrical connection that may otherwise require compensating for the movement of the shaft 126 and the handle 124 relative to each other, thus simplifying manufacturing and reducing manufacturing costs (e.g., by eliminating slip ring electrical contacts and / or sliding electrical contacts). For example, it can simplify the electrical connection that may otherwise require compensating for the movement of the shaft 126 and the handle 124 relative to each other, thus simplifying manufacturing and reducing manufacturing costs (e.g., by eliminating slip ring electrical contacts and / or sliding electrical contacts). In one example, the handle 124 and the shaft 126 can be formed as a single monolithic structure such that the shaft 126 and the handle 124 are fixed and immovable relative to each other. In another example, the handle 124 and the shaft 126 can be fixedly coupled to each other by welding, adhesive bonding, and / or another type of bonding that prevents movement between the handle 124 and the shaft 126. In one example, the handle 124 and the shaft 126 can be formed as a single monolithic structure such that the shaft 126 and the handle 124 are fixed and immovable relative to each other. In another example, the handle 124 and the shaft 126 can be fixedly coupled to each other by welding, adhesive bonding, and / or another type of bonding that prevents movement between the handle 124 and the shaft 126. In one example, the handle 124 and the shaft 126 can be formed as a single monolithic structure such that the shaft 126 and the handle 124 are fixed and immovable relative to each other. In another example, the handle 124 and the shaft 126 can be fixedly coupled to each other by welding, adhesive bonding, and / or another type of bonding that prevents movement between the handle 124 and the shaft 126. In another example, the handle 124 and the shaft 126 can be fixedly coupled to each other by welding, adhesive bonding, and / or another type of bonding that prevents movement between the handle 124 and the shaft 126. In another example, the handle 124 and the shaft 126 can be fixedly coupled to each other by welding, adhesive bonding, and / or another type of bonding that prevents movement between the handle 124 and the shaft 126. In another example, the handle 124 and the shaft 126 can be fixedly coupled to each other by welding, adhesive bonding, and / or another type of bonding that prevents movement between the handle 124 and the shaft 126.

[0028] In other embodiments, the shaft 126 can be made telescopically movable relative to the handle 124. For example, the shaft 126 can be moved distally relative to the handle 124. For example, the shaft 126 can be moved distally relative to the handle 124. To extend the shaft 126 in the forward direction and retract the shaft 126 in the proximal direction, the shaft 126 The inner bore defined by the handle 124 can be telescopically movable. (e.g., movable along the longitudinal axis of the electrosurgical device 112). In the example, an electrosurgical electrode 128 is coupled to the shaft 126, thereby The surgical electrode 128, together with the shaft 126, extends longitudinally relative to the handle 124. This allows for axial movement of the electrosurgical device 112. This adjustment can be performed at multiple different depths within the tissue (e.g., different depths of the patient). Depending on the anatomical shape and / or size, and / or at multiple different angles This makes it easier to perform pneumo-surgical procedures.

[0029] In some embodiments, the electrosurgical electrode 128 may additionally or alternatively The device 112 may be rotatable about an axis of rotation parallel to the longitudinal axis thereof. In some embodiments, the electrosurgical electrode 128 is connected to the handle 124 and shaft 126. In other embodiments, the electrosurgical electrode 128 may be rotatable relative to the , can be rotationally fixed relative to shaft 126, thereby The electrosurgical electrode 128 is disposed within the interior space defined by the handle 124 and the shaft 126. and at least one additional component in the internal cavity. Rotating the electrosurgical electrode 128 relative to the handle 124 rotates the electrosurgical device 11 2. Adjusting the angle of the electrosurgical electrode 128 relative to one or more user input devices 130 In this arrangement, the user can easily The handle 124 can be comfortably gripped at a position where the force device 130 can be comfortably operated. On the other hand, the electrosurgical electrode 128 can be set to a rotational position selected from a plurality of rotational positions with respect to the handle 124, based on, for example, the location, size, and / or shape of the surgical site being operated on by the user.

[0030] In one embodiment, the electrosurgical electrode 128 can be rotatable more than 360 degrees relative to the handle 124. This can enhance ease of use by allowing the operator to freely rotate the electrosurgical electrode 128 without limitation. However, in other embodiments, the electrosurgical electrode 128 can be rotatable only 360 degrees or less (e.g., rotatable only 180 degrees or rotatable 360 degrees). This still allows the operator to achieve a desired rotation sequence, but there is a possibility that the operator may rotate in a first direction, reach a stop position that limits further rotation, and then rotate back in a second direction to achieve the desired rotation sequence.

[0031] It may be advantageous to provide rotation of the monopolar electrosurgical electrode 128 with respect to the handle 124 and / or the shaft 126. However, in some embodiments, the monopolar electrosurgical electrode 128 can be fixed in the rotational direction with respect to the handle 124 and the shaft 126. This simplifies the electrical connection, for example, by (e.g., omitting slip ring electrical contacts and / or sliding electrical contacts) eliminating the need to compensate for movement of the shaft 126 and the handle 124 relative to each other, which may otherwise be necessary, thereby simplifying manufacturing, for example. It may help to simplify and reduce manufacturing costs.

[0032] The user input device 130 can be selected from among the operating modes of the electrosurgical device 112 and / or the electrosurgical generator 110. For example, in one embodiment, the user input device 130 is configured to be selectable from among a cutting operation mode and a coagulation operation mode. In response to the actuation of the user input device 130 of the electrosurgical device 112, the electrosurgical device 112 can (i) receive electrosurgical energy having a power level and / or waveform corresponding to the operation mode selected via the user input device 130, and (ii) supply the electrosurgical energy to the electrosurgical electrode 128. In FIG. 1, the electrosurgical device 112 includes a plurality of electrical components that facilitate supplying the electrosurgical energy received by the electrosurgical device 112 from the electrosurgical generator 110 to the electrosurgical electrode 128. For example, the electrosurgical device 112 can include a printed circuit board 132 (e.g., a flexible printed circuit board), a housing conductor 134, and / or a shaft conductor 136 that can provide a circuit for conducting electrosurgical energy from the power cord 122 to the electrosurgical electrode 128. The electrosurgical device 112 can include at least one electrical component selected from a group of electrical components including a printed circuit board 132 (e.g., a flexible printed circuit board), a housing conductor 134, and / or a shaft conductor 136 that can provide a circuit for conducting electrosurgical energy from the power cord 122 to the electrosurgical electrode 128. One or more of the electrical components can be positioned in an internal bore 125 defined by the handle 124 and / or an internal cavity defined by the shaft 126.

[0033] In an example, the user input device 130 is one or more on the outer surface of the handle 124 on the outer surface of the handle 124 on the outer surface of the handle 124 on the outer surface of the handle 124 on the outer surface of the handle 124 on the outer surface of the handle 124 on the outer surface of the handle 124 on the outer surface of the handle 124

[0034] In an embodiment, the user input device 130 is one or more It can include a plurality of buttons. Each button of the user input device 130 is operable to activate one of each of the plurality of switches 138 on the printed circuit board 132. Generally, the switch 138 and / or the printed circuit board 132 are operable to control the supply of electrosurgical energy from the electrosurgical generator 110 to the electrosurgical electrode 128. For example, in one embodiment, when each button is operated (e.g., pressed), each respective switch 138 associated with the button can be activated, whereby the printed circuit board 132 transmits a signal to the electrosurgical generator 110, and the electrosurgical generator 110 responds by supplying electrosurgical energy having a power level and / or waveform corresponding to the operating mode associated with the button. In another embodiment, operating the button, thereby activating each respective switch 138 associated with the button, can close the switch 138, thereby completing the circuit to the electrosurgical generator 110, and the electrosurgical generator 110 responds by supplying electrosurgical energy having a power level and / or waveform corresponding to the operating mode associated with the button. In some examples of this embodiment, the printed circuit board 132 can be omitted. It can be made to operate so as to activate one of each of the plurality of switches 138 of the printed circuit board 132. Generally, the switch 138 and / or the printed circuit board 132 are operable to control the supply of electrosurgical energy from the electrosurgical generator 110 to the electrosurgical electrode 128. For example, in one embodiment, when each button is operated (e.g., pressed), each respective switch 138 associated with the button can be activated. Thereby, the printed circuit board 132 transmits a signal to the electrosurgical generator 110, and the electrosurgical generator 110 responds by supplying electrosurgical energy having a power level and / or waveform corresponding to the operating mode associated with the button. In another embodiment, operating the button, thereby activating each respective switch 138 associated with the button, can close the switch 138. Thereby, the circuit to the electrosurgical generator 110 is completed, and the electrosurgical generator 110 responds by supplying electrosurgical energy having a power level and / or waveform corresponding to the operating mode associated with the button. In some examples of this embodiment, the printed circuit board 132 can be omitted.

[0035] In both example embodiments, the electrosurgical energy supplied by the electrosurgical generator 110 can be supplied from (i) the power cord 122, the printed circuit board 132, and / or the switch 138 to (ii) the electrosurgical electrode 128 by the housing conductor 134 and the shaft conductor 136. Thereby, as shown in FIG. 1, the printed circuit board 1 ​​​​​​​​32 can be coupled to the power cord 122, and the housing conductor 134 can be coupled to the printed circuit board 132 and the shaft conductor 136, and the shaft conductor 136 can be coupled to the electrosurgical electrode 128. In this arrangement, the housing conductor 134 can conduct electrosurgical energy (supplied to the housing conductor 134 via the printed circuit board 132 ) to the shaft conductor 136, and the shaft conductor 136 can conduct the electrosurgical energy to the electrosurgical electrode 128.

[0036] Generally, the housing conductor 134 and the shaft conductor 136 can each include one or more conductive elements that provide a conductive bus for supplying electrosurgical energy to the electrosurgical electrode 128. More specifically, the housing conductor 134 can include one or more conductive elements of the handle 124 that can supply electrosurgical energy to the shaft conductor 136, and the shaft conductor 136 can include one or more conductive elements of the shaft 126 that can supply electrical energy from the housing conductor 1 34 to the electrosurgical electrode 128. In an embodiment where the shaft 126 is movable and / or rotatable relative to the handle 124, the housing conductor 134 can engage the shaft conductor 13 6 to maintain an electrical connection between the housing conductor 134, the shaft conductor 136, and the electrosurgical electrode 128, while (i) the shaft 126 and / or the electrosurgical electrode 128 telescopically moves relative to the handle 124, and / or (ii) the electrosurgical electrode 128 rotates relative to the handle 124.

[0037] ​​Electrosurgical device 112 includes user input device 130 in FIG. 130 may be separate from the electrosurgical device 112 in another embodiment. For example, user input device 130 may additionally or alternatively be connected to electrosurgical device 112 as described above. The device may include one or more foot pedals operable to control operation of the device. The foot pedal is connected to an electrosurgical generator 1 to provide a signal in response to actuation of the foot pedal. 10.

[0038] As shown in FIG. 1, the electrosurgical device 112 is additionally configured to emit light. The light source 140 may include one or more light sources 140. The light source 140 may include an optical lens assembly. 142, which can be optically coupled to the optical lens assembly 142. The electrosurgical electrode 128 receives the emitted light and illuminates the surgical site while performing electrosurgery. The device is configured to transmit light distally toward the surgical site for imaging. As will be described in more detail below with respect to 23, the optical lens assembly 142 140 to direct the light emitted by the distal end of the surgical site, thereby illuminating the surgical site. can help improve the quality of

[0039] In FIG. 1, light source 140 may be coupled to shaft 126. In this manner, light source 14 The handle 124 can also move telescopically with the shaft 126. However, in other embodiments, the light source 140 may be located inside the handle 124. It can be in a bore and / or bonded to the outer surface of the handle 124. The light source 140 may be one or more light emitting diodes (LEDs), organic light emitting diodes (OLEDs), or the like. It can include (OLED), optical fiber, non-fiber optical waveguide, and / or lens. Additionally, for example, the light source 140 can include a light-emitting diode printed circuit board (LED PCB) having one or more light sources (e.g., LED). As will be described in more detail below, the LED PCB can include a PCB opening, and one or more other components of the electrosurgical device 112 (e.g., the electrosurgical electrode 128) can extend through the opening. In an embodiment including the light source 140, the user input device 130, the printed circuit board 132, the switch 138, the housing conductor 134, and / or the shaft conductor 136 can additionally supply power from a direct current (DC) power source 144 to the light source 140. In one example, the DC power source 144 can include a battery disposed in the handle 124, a plug of the power cord 122, and / or a battery receptacle disposed along the power cord 122 between the handle 124 and the plug.

[0040] The electrosurgical device 112 includes the DC power source 144 in FIG. 1, but the DC power source 144 can be separate and different from the electrosurgical device 112 in other examples. For example, in another example, the electrosurgical generator 110 can include the DC power source 144. Additionally, in an embodiment including the light source 140, the user input device 130 can be operable to cause the light source 140 to emit light. In one example, the user input device 130 is separate from a button that controls the electrosurgical operation mode of the electrosurgical device 112.

[0041] ​​​​​​​​, a button for independently controlling the light source 140 can be included. In another embodiment, the user The input device 130 and the printed circuit board 132 can be configured such that the operation of the button for controlling the electrosurgical operation mode simultaneously controls the operation of the light source 140 (for example, when the button is operated to apply electrosurgical energy at the electrosurgical electrode 128, the light source 140 can be automatically activated to emit light). As shown in FIG. 1, in response to the operation of the user input device 130 for activating the light source 140, the DC power supply 144 supplies power (for example, DC voltage) to the light source 140 via the printed circuit board 132, the housing conductor 134, and / or the shaft conductor 136. In this embodiment, one or more of the conductive elements of the housing conductor 134 can be configured to supply power from the DC power supply 144 to the light source 140 and / or return power from the light source 140 to the DC power supply 144. Thus, the housing conductor

[0042] 134 can additionally or alternatively assist in providing electrical communication between the DC power supply 144 and the light source 140 when the shaft 126 and the light source are telescopically moved relative to the handle 124. In the above-described embodiment, the user input device 130 on the handle 124 can be operated to control the operation of the light source 140, but the light source 140 can additionally or alternatively be operated by one or more user input devices in the electrosurgical generator 110 (for example, via the user interface 116) and / or at the plug of the power cord 122. In the above embodiment, the user input device 130 on the handle 124 can be operated to control the operation of the light source 140, but the light source 140 can be additionally or alternatively operated by one or more user input devices in the electrosurgical generator 110 (e.g., via the user interface 116) and / or at the plug of the power cord 122. In the above embodiment, the user input device 130 on the handle 124 can be operated to control the operation of the light source 140, but the light source 140 can be additionally or alternatively operated by one or more user input devices in the electrosurgical generator 110 (e.g., via the user interface 116) and / or at the plug of the power cord 122. In the above embodiment, the user input device 130 on the handle 124 can be operated to control the operation of the light source 140, but the light source 140 can be additionally or alternatively operated by one or more user input devices in the electrosurgical generator 110 (e.g., via the user interface 116) and / or at the plug of the power cord 122.

[0043] In the above-described embodiment, the user input device 130 on the handle 124 can be operated to control the operation of the light source 140, but the light source 140 can be additionally or alternatively operated by one or more user input devices in the electrosurgical generator 110 (e.g., via the user interface 116) and / or at the plug of the power cord 122. In the above embodiment, the user input device 130 on the handle 124 can be operated to control the operation of the light source 140, but the light source 140 can be additionally or alternatively operated by one or more user input devices in the electrosurgical generator 110 (e.g., via the user interface 116) and / or at the plug of the power cord 122. In the above embodiment, the user input device 130 on the handle 124 can be operated to control the operation of the light source 140, but the light source 140 can be additionally or alternatively

[0044] As noted above, the electrosurgical device 112 additionally functions to remove surgical smoke from the target tissue. The surgical device may include features that provide for the evacuation of the surgical fluid to a location external to the surgical site. Smoke is a by-product of various surgical procedures. For example, surgical smoke is emitted during a surgical procedure. The device may include electrosurgical units (ESUs), lasers, electrocautery devices, ultrasound devices, and / or is produced as a by-product of other power surgical instruments (e.g., bone saws and / or drills) In some instances, surgical smoke is produced by the destruction of tissue. May contain toxic gases and / or biological products that can cause serious burns. Smoke can have an unpleasant odor. For these and other reasons, many Many guidelines aim to reduce or maximize the surgeon's exposure to surgical smoke. This indicates that the

[0045] To reduce (or minimize) exposure to surgical smoke, A smoke evacuation system may be used during the procedure. Generally, a smoke evacuation system is used to remove the surgical A suction device capable of generating sufficient suction and / or vacuum pressure to extract the smoke. In some embodiments, the smoke evacuation system may include a suction pump 146. Connected to an exhaust system that evacuates surgical smoke (e.g., a wall-mounted exhaust system) In another embodiment, the smoke evacuation system may include a surgical smoke evacuation system. The air may be filtered and returned to the operating room. The electrosurgical generator 110 may be provided as a separate device or may be integrated into one device (e.g., For example, they may be integrated (eg, in a common housing).

[0046] As shown in FIG. 1, the shaft 126 has an exhaust port in the interior cavity of the shaft 126. The smoke channel 148 may include a smoke evacuation channel 148. The smoke evacuation channel 148 may be configured to allow the smoke to escape from the distal end of the electrosurgical electrode 128. The smoke inlet may also include a smoke inlet that may extend circumferentially about the central axis of the position portion. In this arrangement, the smoke inlet of the smoke evacuation channel is electrically connected to the handle 124. All rotational alignment positions of the electrosurgical device 112 relative to the surgical electrode 128 and / or target tissue. This can help guide surgical smoke into the smoke exhaust channel 148. However, in another embodiment, smoke evacuation channel 148 is located adjacent to the electrosurgical electrode 128. It may include one or more smoke inlets that do not extend circumferentially around the periphery.

[0047] In one embodiment, the smoke evacuation channel 148 is separated from the optical lens assembly 142 by an air gap. For example, the shaft 126 may include an outer tube spaced apart from the optical lens. To provide an air gap between the optical lens assembly 142 and the exhaust A plurality of standoffs may be included that extend between the outer pipe of the smoke channel 148 and the In this embodiment, the optical lens assembly 142 is and including the standoffs so that the standoffs are formed as a single monolithic structure. In another embodiment, the standoffs may be separate from the outer pipe of the smoke evacuation channel 148. In another embodiment, the stand-alone The filter is separate from the outer tube of the smoke evacuation channel 148 and the optical lens assembly 142. It is possible.

[0048] In one embodiment, the smoke exhaust channel 148 of the shaft 126 is a first portion of the smoke flow path. The interior bore of the handle 124 defines a second portion of the smoke flow path. FIG. 2 shows a partial cross-sectional view of an electrosurgical device 112 according to this example embodiment. In this arrangement, surgical smoke is expelled from the surgical site down the shaft 126. The handle 124 is received in the channel 148 and moves proximally along the smoke evacuation channel 148. In the internal bore 125 of the handle 124, the smoke can flow into the Additionally, a suction port is coupled to the proximal end of the handle 124 and directs smoke from the handle 124. The smoke may flow to a smoke pipe 150 configured to deliver the smoke to the pump 146 .

[0049] As mentioned above, the optical lens assembly 142 directs the light emitted by the light source 140 This helps to improve the quality of the light illuminating the surgical site. The optical lens assembly 142 is located at the distal end of the shaft 126. In some embodiments, the optical lens assembly 142 can be mounted on the electrosurgical electrode 1. circumferentially around the electrosurgical electrode 128 to emit light distally around all sides of the This reduces shadows and allows the shaft 126 to be positioned relative to the handle 124. and / or at all rotational alignment positions of the electrosurgical device 112 relative to the target tissue. This can help provide greater uniformity of illumination.

[0050] In some embodiments, the smoke evacuation channel 148 and the optical lens assembly 142 , can be coaxial. For example, the smoke exhaust channel 148 and the optical lens assembly 1 42 can each have a longitudinal axis that coincides with the central axis of the shaft 126 . It may be advantageous to arrange the smoke exhaust channel 148 so that its central axis coincides with the central axis of the shaft 126 for efficient suction performance. Similarly , for example, to provide better lines of sight and / or more intuitive handling at all rotational alignment positions, it may be advantageous to arrange the electrosurgical electrode 128 so that it aligns with the central axis of the shaft 126 . .

[0051] In an embodiment, the optical lens assembly 142 can define a through bore, and the smoke exhaust channel 148 and / or the electrosurgical electrode 128 can extend through the through bore . In such an arrangement, the electrosurgical electrode 128 can be centered on the shaft 126, the smoke exhaust channel 148 can extend around the circumference of the electrosurgical electrode 128 and receive smoke , and the optical lens assembly 142 can emit light and extend around the electrosurgical electrode 128 .

[0052] FIG. 3 shows a simplified block diagram of an electrosurgical device 112 including additional features of the optical lens assembly 142 according to an embodiment shown in FIG. 1 . In FIG. 3, the electrosurgical stem 100 includes a housing 123, an electrosurgical electrode 128, a plurality of light sources 140 in the housing 123 , and an optical lens assembly 142. The housing 123 has a proximal end and a distal end, and the electrosurgical electrode 128 extends distally from the distal end of the housing 123 . . ​​​​

[0053] Also, as shown in FIG. 3, the optical lens assembly 142 has a proximal end and a distal end. The optical lens assembly 142 includes a plurality of optical components 301 that are (i) coupled to each other at the distal end of the optical lens assembly 142 and (ii) spaced apart from each other at the proximal end of the optical lens assembly 142. In an embodiment, the plurality of optical components 301 do not effectually transmit light to each other (e.g., less than about 10% of the light from one optical component 301 passes through an adjacent optical component 301). This can help provide a relatively narrow light beam. However, a portion of the light emitted by one of the optical components 301 can overlap with a portion of the light emitted by another optical component 301. This can provide a wider light beam compared to embodiments where the optical components 301 do not effectually transmit light to each other. In FIG. 3, the optical lens assembly 142 can include two or more optical components 301. More specifically, the optical lens assembly 142 can include an amount of optical components equal to N, where N is an integer value greater than 1. As shown in FIG. 3, each optical component 301 is optically coupled to a respective one of the plurality of light sources 140. Accordingly, the light sources 140 can also include an amount of light sources equal to N. In one embodiment, the optical lens assembly 142 can include three or more optical components 301 and three or more light sources 140. This can help disperse the optical components 301 around the longitudinal axis of the shaft 126, whereby the optical le In FIG. 3, the optical lens assembly 142 can include two or more optical components 301. More specifically, the optical lens assembly 142 can include an amount of optical components equal to N, where N is an integer value greater than 1. As shown in FIG. 3, each optical component 301 is optically coupled to a respective one of the plurality of light sources 140. Accordingly, the light sources 140 can also include an amount of light sources equal to N. In one

[0054] In FIG. 3, the optical lens assembly 142 can include two or more optical components 301. More specifically, the optical lens assembly 142 can include an amount of optical components equal to N, where N is an integer value greater than 1. As shown in FIG. 3, each optical component 301 is optically coupled to a respective one of the plurality of light sources 140. Accordingly, the light sources 140 can also include an amount of light sources equal to N. In one optical component 301 is optically coupled to a respective one of the plurality of light sources 140. Accordingly, the light sources 140 can also include an amount of light sources equal to N. In one embodiment, the optical lens assembly 142 can include three or more optical components 301 and three or more light sources 140. This can help disperse the optical components 301 around the longitudinal axis of the shaft 126, whereby the optical le In FIG. 3, the optical lens assembly 142 can include two or more optical components 301. More specifically, the optical lens assembly 142 can include an amount of optical components equal to N, where N is an integer value greater than 1. As shown in FIG. 3, each optical component 301 is optically coupled to a respective one of the plurality of light sources 140. Accordingly, the light sources 140 can also include an amount of light sources equal to N. In one The lens assembly 142 is capable of emitting light distally and around the electrosurgical electrode 128, thereby (i) reducing shadow formation and (ii) providing a higher uniformity of illumination at all rotational alignment positions of the electrosurgical electrode 128 and / or the electrosurgical device 112 with respect to the handle 124 and / or the target tissue. As will be described in more detail below, at the proximal end of the optical lens assembly 142, each optical component 301 can define a cavity, and in this cavity, the light sources 1 40 are respectively arranged such that they are distal to the most proximal surface of the optical lens assembly 142. This can help better capture and transmit the wide-angle light rays emitted by the light source 140 compared to other optical lenses where the light source is arranged proximal to the most proximal surface of the optical lens assembly. However, in some embodiments, the light source can be arranged proximal to the most proximal surface of the optical lens assembly 142. As will be described in more detail below, at the proximal end of the optical lens assembly 142, each optical component 301 can define a cavity, and in this cavity, the light sources 1

[0055] As will be described in more detail below, at the proximal end of the optical lens assembly 142, each optical component 301 can define a cavity, and in this cavity, the light sources 1 40 are respectively arranged such that they are distal to the most proximal surface of the optical lens assembly 142. This can help better capture and transmit the wide-angle light rays emitted by the light source 140 compared to other optical lenses where the light source is arranged proximal to the most proximal surface of the optical lens assembly. However, in some embodiments, the light source can be arranged proximal to the most proximal surface of the optical lens assembly 142. 40 are respectively arranged such that they are distal to the most proximal surface of the optical lens assembly 142. This can help better capture and transmit the wide-angle light rays emitted by the light source 140 compared to other optical lenses where the light source is arranged proximal to the most proximal surface of the optical lens assembly. However, in some embodiments, the light source can be arranged proximal to the most proximal surface of the optical lens assembly 142. 40 are respectively arranged such that they are distal to the most proximal surface of the optical lens assembly 142. This can help better capture and transmit the wide-angle light rays emitted by the light source 140 compared to other optical lenses where the light source is arranged proximal to the most proximal surface of the optical lens assembly. However, in some embodiments, the light source can be arranged proximal to the most proximal surface of the optical lens assembly 142. 40 are respectively arranged such that they are distal to the most proximal surface of the optical lens assembly 142. This can help better capture and transmit the wide-angle light rays emitted by the light source 140 compared to other optical lenses where the light source is arranged proximal to the most proximal surface of the optical lens assembly. However, in some embodiments, the light source can be arranged proximal to the most proximal surface of the optical lens assembly 142. 40 are respectively arranged such that they are distal to the most proximal surface of the optical lens assembly 142. This can help better capture and transmit the wide-angle light rays emitted by the light source 140 compared to other optical lenses where the light source is arranged proximal to the most proximal surface of the optical lens assembly. However, in some embodiments, the light source can be arranged proximal to the most proximal surface of the optical lens assembly 142. 40 are respectively arranged such that they are distal to the most proximal surface of the optical lens assembly 142. This can help better capture and transmit the wide-angle light rays emitted by the light source 140 compared to other optical lenses where the light source is arranged proximal to the most proximal surface of the optical lens assembly. However, in some embodiments, the light source can be arranged proximal to the most proximal surface of the optical lens assembly 142. 40 are respectively arranged such that they are distal to the most proximal surface of the optical lens assembly 142. This can help better capture and transmit the wide-angle light rays emitted by the light source 140 compared to other optical lenses where the light source is arranged proximal to the most proximal surface of the optical lens assembly. However, in some embodiments, the light source can be arranged proximal to the most proximal surface of the optical lens assembly 142.

[0056] Each optical component 301 includes a proximal reflecting surface 303 and a distal transmitting surface 305. The proximal reflecting surface 303 extends distally from the respective light source 140 optically coupled to the optical component 301. The proximal reflecting surface 303 is configured to reflect the light emitted by the respective light source 140 towards the distal end of the optical component 301. In some examples, the proximal reflecting surface 303 can have a spherical or parabolic shape configured to substantially collimate the light reflected by the proximal reflecting surface 303. Each optical component 301 includes a proximal reflecting surface 303 and a distal transmitting surface 305. The proximal reflecting surface 303 extends distally from the respective light source 140 optically coupled to the optical component 301. The proximal reflecting surface 303 is configured to reflect the light emitted by the respective light source 140 towards the distal end of the optical component 301. In some examples, the proximal reflecting surface 303 can have a spherical or parabolic shape configured to substantially collimate the light reflected by the proximal reflecting surface 303. Each optical component 301 includes a proximal reflecting surface 303 and a distal transmitting surface 305. The proximal reflecting surface 303 extends distally from the respective light source 140 optically coupled to the optical component 301. The proximal reflecting surface 303 is configured to reflect the light emitted by the respective light source 140 towards the distal end of the optical component 301. In some examples, the proximal reflecting surface 303 can have a spherical or parabolic shape configured to substantially collimate the light reflected by the proximal reflecting surface 303. Each optical component 301 includes a proximal reflecting surface 303 and a distal transmitting surface 305. The proximal reflecting surface 303 extends distally from the respective light source 140 optically coupled to the optical component 301. The proximal reflecting surface 303 is configured to reflect the light emitted by the respective light source 140 towards the distal end of the optical component 301. In some examples, the proximal reflecting surface 303 can have a spherical or parabolic shape configured to substantially collimate the light reflected by the proximal reflecting surface 303. Each optical component 301 includes a proximal reflecting surface 303 and a distal transmitting surface 305. The proximal reflecting surface 303 extends distally from the respective light source 140 optically coupled to the optical component 301. The proximal reflecting surface 303 is configured to reflect the light emitted by the respective light source 140 towards the distal end of the optical component 301. In some examples, the proximal reflecting surface 303 can have a spherical or parabolic shape configured to substantially collimate the light reflected by the proximal reflecting surface 303. Each optical component 301 includes a proximal reflecting surface 303 and a distal transmitting surface 305. The proximal reflecting surface 303 extends distally from the respective light source 140 optically coupled to the optical component 301. The proximal reflecting surface 303 is configured to reflect the light emitted by the respective light source 140 towards the distal end of the optical component 301. In some examples, the proximal reflecting surface 303 can have a spherical or parabolic shape configured to substantially collimate the light reflected by the proximal reflecting surface 303.

[0057] In other embodiments, the proximal reflecting surface 303 has an aspherical shape configured to substantially collimate the light reflected by the proximal reflecting surface 303. The aspherical shape of the proximal reflecting surface 303 provides greater efficiency and can achieve a higher level of light collimation than is possible with a parabolic or spherical reflecting surface. In one embodiment, the aspherical shape of the proximal reflecting surface 303 can be defined by Equation 1 below: z(r)= C*r^2 / (1+sqrt(1-C^2 *(K+1) * r^2) + a4 *r^4 + a6 *r^6+a8*r^8 (Equation 1) where C is the curvature, K is the conic constant, and a4, a6, and a8 are aspheric coefficients. Further, in an embodiment, the proximal portion of the proximal reflecting surface 303 can have a parabolic shape, and the distal portion of the proximal reflecting surface 303 can have an aspherical shape, which may also help to collimate relatively wide-angle light rays. In an embodiment, the proximal reflecting surface 303 can be an internal total reflection (TIR) reflector. For example, the proximal reflecting surface 303 and the housing 123 can be spaced apart from each other such that a void surrounds the proximal reflecting surface 303. Arranging the proximal reflecting surface 303 as a TIR reflector can help to reduce additional manufacturing costs and / or the biocompatibility requirements associated with the metal reflectors typically incorporated into many conventional lighting devices (e.g., flashlights). The distal transmissive surface 305 is at the distal end of the optical lens assembly 142. The distal transmissive surface 30 5 is configured to output light from the optical component 301 in a distal direction. The optical lens

[0058] assembly 142 can be configured to collimate light received from the proximal reflecting surface 303 and output the collimated light through the distal transmissive surface 305. For example, the optical lens assembly 142 can include one or more lenses configured to collimate light received from the proximal reflecting surface 303 and output the collimated light through the distal transmissive surface 305. The distal transmissive surface 305 can be planar or have a curved shape, such as a spherical or aspherical shape. In an embodiment, the distal transmissive surface 305 can be configured to output light in a substantially parallel beam. This can be useful for applications where collimated light is desired, such as in projection systems or illumination devices.

[0059] The distal transmissive surface 305 is at the distal end of the optical lens assembly 142. The distal transmissive surface 30 5 is configured to output light from the optical component 301 in a distal direction. The optical lens ​Each distal transmissive surface 305 of the lens assembly 142 can include one or more features for controlling the exit force of light from the optical lens assembly 142. In an embodiment, at a plane on the distal side of the distal end of the electrosurgical electrode 128, the light emitted by the optical lens assembly 142 can have a substantially uniform light intensity at each point in space. For example, the light emitted by the optical lens assembly 142 can define a light pattern at a plane on the distal side of the distal end of the electrosurgical electrode 128, and the light intensity at the weakest part of the light pattern can be at least 50 percent of the light intensity at the strongest part of the light pattern.

[0060] In some embodiments, each distal transmissive surface 305 can be an aspherical lens configured to provide light in a substantially uniform manner. In one embodiment, each distal transmissive surface 305 can be divided into a plurality of zones, and light rays can be traced from each zone to a target plane. The asphericity can be configured to provide a substantially uniform irradiance level of light ray divergence within a defined area of the target plane. For example, the aspherical lens can use Snell's law and ray tracing to determine the lens surface angles for each zone and then curve-fit the angles to an aspherical droop equation (e.g., Equation 1 above) to determine a continuous asphericity.

[0061] In another embodiment, each distal transmissive surface 305 can be a Fresnel lens. For example, the Fresnel lens can have a flat surface at the distal end. At the distal end, ​The flat surface can define a plurality of concentric rings, and each ring has its own optical characteristics (e.g., Fresnel grooves defined by pitch, depth, angle, and / or curvature) and the optical characteristics of the plurality of rings can be different from each other. As a result, the flat surface at the distal end transmits light in a form approximating an aspherical lens (e.g., different rings can be different in at least one of the pitch, depth, angle, and / or curvature of the Fresnel grooves). This helps to improve focusing light on the distal transmission surface 305 while maintaining a relatively flat and compact shape.

[0062] In another embodiment, the distal transmission surface 305 can include a plurality of lenslets at the distal end in one type of lens selected from a group of lens types including spherical lenses, aspherical lenses, and Fresnel lenses. The lenslets can further help to enhance the uniformity of light intensity. For example, the lenslets can include a plurality of small spherical lenses arranged in a regular pattern. For example, the pattern can be hexagonal (e.g., each lenslet has 6 sides) or rectangular (e.g., each lenslet has 4 sides), and adjacent lenslets are in contact with each other. Each small spherical lenslet generates an image of the source. Thus, the lenslet array generates a plurality of images of the source. Since the lenslets include a plurality of lenses arranged close to each other, the images at least partially overlap each other, making it difficult for the human eye to distinguish one image. As a result, the light The beam appears uniform and homogeneous.

[0063] Figures 4A - 5B show two embodiments of the optical lens assembly 142 of FIG. 3 according to the embodiments. In particular, FIGS. 4A and 5A show the assembly of the optical lens assembly 142 and the light source 140 according to the first and second example embodiments, respectively, and FIGS. 4B and 5B show cross - sectional views passing through one optical component 301 of the optical lens assembly 142 and the light source 140 in FIGS. 4A and 5A, respectively. As shown in FIGS. 4A - 5B, the optical lens assembly 142 has a proximal end 142A and a distal end 142B. The optical lens assembly 142 also includes optical components 301 that are (i) coupled to each other at the distal end 142B of the optical lens assembly 142 and (ii) spaced apart from each other at the proximal end 142A of the optical lens assembly 142. In these

[0064] embodiments, the optical components 301 do not transmit light to each other. However, a portion of the light emitted by one of the optical components 301 can overlap with a portion of the light emitted by another optical component to more uniformly disperse the light in a plane on the distal side of the distal end of the electrosurgical electrode 128. In one embodiment, the optical lens assembly 142 can be formed by a molding process. In FIGS. 4A - 5B, the optical lens assembly 142 includes three optical components 301 and three light sources 140. As described above, this can help distribute the optical components 301 around the longitudinal axis 413 of the shaft 126, whereby the light ... In these embodiments, the optical components 301 do not transmit light to each other. However, a portion of the light emitted by one of the optical components 301 can overlap with a portion of the light emitted by another optical component to more uniformly disperse the light in a plane on the distal side of the distal end of the electrosurgical electrode 128. In one embodiment, the optical lens assembly 142 can be formed by a molding process. However, a portion of the light emitted by one of the optical components 301 can overlap with a portion of the light emitted by another optical component to more uniformly disperse the light in a plane on the distal side of the distal end of the electrosurgical electrode 128. In one embodiment, the optical lens assembly 142 can be formed by a molding process. In one embodiment, the optical lens assembly 142 can be formed by a molding process. In one embodiment, the optical lens assembly 142 can be formed by a molding process.

[0065] In FIGS. 4A - 5B, the optical lens assembly 142 includes three optical components 301 and three light sources 140. As described above, this can help distribute the optical components 301 around the longitudinal axis 413 of the shaft 126, whereby the light 413 of the shaft 126, which can help distribute the optical components 301 around the longitudinal axis 413 of the shaft 126, whereby the light The learning lens assembly 142 can emit light in the distal direction and around the electrosurgical electrode 128 so as to reduce the formation of shadows. Additionally, for example, three optical components 301 and three light sources 140 can provide the desired quality of light in an array that is more compact and has lower power requirements than other embodiments that include different amounts of optical components 301 and light sources 140. However, in other examples, the optical lens assembly 142 can include different amounts of optical components 301 and light sources 140. In the illustrated example, the light source 140 includes a plurality of LEDs coupled to the LED PCB 407. The LED PCB 407 can be in the form of a ring having a PCB opening 409 that extends completely through the LED PCB 407. The optical lens assembly 142 can also include a lens opening 411 that defines a through-bore as it passes through the optical lens assembly 142. The PCB opening 409 of the LED PCB 407 can be aligned with the lens opening 411 of the optical lens assembly 142, whereby one or more other components of the electrosurgical device 112 (e.g., the electrosurgical electrode 128 and / or the smoke exhaust channel 148) can extend through the LED PCB 407 and the optical lens assembly 142 while the LEDs are arranged around the components. For example, the light source 140 can be circumferentially arranged around the longitudinal axis 413 of the electrosurgical electrode 128, and the longitudinal axis 413 extends between the proximal end of the electrosurgical electrode 128 and the distal end of the electrosurgical electrode 128. In FIGS. 4A-5B, three light sources 140 and three optical components 301 can provide the desired quality of light in an array that is more compact and has lower power requirements than other embodiments that include different amounts of optical components 301 and light sources 140. However, in other examples, the optical lens assembly 142 can include different amounts of optical components 301 and light sources 140. In the illustrated example, the light source 140 includes a plurality of LEDs coupled to the LED PCB 407.

[0066] The LED PCB 407 can be in the form of a ring having a PCB opening 409 that extends completely through the LED PCB 407. The optical lens assembly 142 can also include a lens opening 411 that defines a through-bore as it passes through the optical lens assembly 142. The PCB opening 409 of the LED PCB 407 can be aligned with the lens opening 411 of the optical lens assembly 142, whereby one or more other components of the electrosurgical device 112 (e.g., the electrosurgical electrode 128 and / or the smoke exhaust channel 148) can extend through the LED PCB 407 and the optical lens assembly 142 while the LEDs are arranged around the components. For example, the light source 140 can be circumferentially arranged around the longitudinal axis 413 of the electrosurgical electrode 128, and the longitudinal axis 413 extends between the proximal end of the electrosurgical electrode 128 and the distal end of the electrosurgical electrode 128. In FIGS. 4A-5B, three light sources 140 and three optical components 301 can provide the desired quality of light in an array that is more compact and has lower power requirements than other embodiments that include different amounts of optical components 301 and light sources 140. However, in other examples, the optical lens assembly 142 can include different amounts of optical components 301 and light sources 140.

[0067] and three optical components 301 can provide the desired quality of light in an array that is more compact and has lower power requirements than other embodiments that include different amounts of optical components 301 and light sources 140. However, in other examples, the optical lens assembly 142 can include different amounts of optical components 301 and light sources 140. In the illustrated example, the light source 140 includes a plurality of LEDs coupled to the LED PCB 407. are arranged equidistantly around the longitudinal axis 413 of the electrosurgical electrode 128, and the optical lens aperture 411 defined by the lens assembly 142 has a central axis that is collinear with the longitudinal axis 413 of the electrosurgical electrode 128. This can help enhance the uniformity of the light around the electrosurgical electrode 128.

[0068] Additionally, for example, a suction tube that defines a smoke exhaust channel 148 can extend through the PCB aperture 409 in the LED PCB 407 and the lens aperture 411 in the optical lens assembly 142. In this arrangement, the light source 140 can be arranged around the suction tube, and the distal end 142B of the optical lens assembly 142 can extend around the suction tube. Thereby, it is possible to discharge smoke and emit light around the electrosurgical electrode 128.

[0069] As shown in FIGS. 4A and 5A, the optical lens assembly 142 includes an inner surface and an outer surface. The inner surface defines the lens aperture 411 and a through bore of the optical lens assembly 142. In one embodiment, between the proximal reflective surface 303 and the distal transmissive surface 305, the cross-section of the optical lens assembly 142 is circular on the inner surface and non-circular on the outer surface. Thereby, while preventing rotation of the optical lens assembly 142 with respect to components adjacent to the outer surface, the optical lens assembly 142 can rotate with respect to components extending through the through bore of the optical lens assembly 142. As an example, the non-circular shape can be an elliptical shape, a polygonal shape, and / or a non-polygonal shape.

[0070] ​In another embodiment, the rotation of the surrounding components is allowed and the rotation of the components arranged inside with respect to the optical lens assembly 142 is blocked. To this end, the inner surface can have a non-circular cross-sectional shape, while the outer surface is circular. In another embodiment, both the inner surface and the outer surface can have a circular cross-sectional shape to allow the rotation of the adjacent components, or both the inner surface and the outer surface can be non-circular to prevent the rotation of the adjacent components.

[0071] As shown in FIGS. 4B and 5B, at the proximal end 142A of the optical lens assembly 142 , each optical component 301 can define a cavity 415, and in this cavity 415, the light sources 140 are respectively arranged so that the light sources 140 are located distal to the most proximal surface of the optical lens assembly 142. Additionally, each optical component 301 is spaced from the respective light sources 140 optically coupled to the optical component 301 by a gap. This can help better capture and transmit the wide-angle light rays emitted by the light sources 140 compared to other optical lenses where the light sources are arranged proximal to the most proximal surface of the optical lens assembly 142.

[0072] As shown in FIGS. 4A - 5B, each optical component 301 includes a proximal reflecting surface 303 and a distal transmissive surface 305. The proximal reflecting surface 303 extends distally from the respective light sources 140 optically coupled to the optical component 301. The proximal reflecting surface 303 is configured to reflect the light emitted by the respective light sources 140 towards the distal end of the optical component 301.

[0073] Also, in FIGS. 4A-5B, the proximal reflecting surface 303 has an aspherical shape configured to substantially collimate the light reflected by the proximal reflecting surface 303. The aspherical shape of the proximal reflecting surface 303 can provide a higher efficiency and achieve a higher level of light collimation than is possible with a parabolic or spherical reflecting surface. Further, in an embodiment, the proximal portion of the proximal reflecting surface 303 can have a parabolic shape, and the distal portion of the proximal reflecting surface 303 can have an aspherical shape. This may also help to collimate relatively wide-angle light rays. As described above, the proximal reflecting surface 303 can be a TIR reflector. For example, the proximal reflecting surface 303 and the housing 123 can be spaced apart from each other such that a void surrounds the proximal reflecting surface 303. Disposing the proximal reflecting surface 303 as a TIR reflector can help to reduce additional manufacturing costs and / or biocompatibility requirements associated with a metal reflector. The distal transmissive surface 305 is located at the distal end 142B of the optical lens assembly 142. The distal transmissive surface 305 is configured to output light from the optical component 301 in a distal direction. As described above, each distal transmissive surface 305 of the optical lens assembly 142 can include one or more features for controlling the output of light from the optical lens assembly 142. For example, each distal transmissive surface 305 is a Fresnel lens in FIGS. 4A-4B, and each distal transmissive surface 305 is aspherical in FIGS. 5A-5B.

[0074]

[0075]

[0076] ​​​​​​​​​​​​​​​FIG. 6 shows a simplified block diagram of a light source 140 according to one embodiment. FIGS. 4B, 5 B and FIG. 6, each light source 140 includes an LED 6 17 including a die 619 and a protective layer 621. The protective layer 621 can be a layer of an optically transparent material such as, for example, a layer of silicone material . The protective layer 621 can be a non-rigid structure (e.g., coating g) as opposed to a rigid silicone lens that protects the diode structure located below in a conventional LED . This is possible at least in part because the light source 140 is disposed in the cavity 415 of the optical component 301 such that the optical component 301 can protect the die 61 9 .

[0077] By using a non-rigid protective layer 621 instead of a rigid silicone lens, the overall size of each LED 617 can be reduced. This can help reduce the size of the optical lens assembly 142 while maintaining the ratio of the optical diameter to the LED diameter . For example, in a conventional LED, the rigid silicone lens is typically about 200% larger than the diameter of the die 61 9. In contrast, an LED having the non-rigid protective layer 621 described above can have a diameter that is about 10% to about 50% larger than the diameter of the die 619 . As one example, each LED 617 can have a diameter of about 1 millimeter (mm) to about 2 mm . Thus, the light source 140 described above can solve the problem of space constraints and help improve light capture from light sources having a wide Lambertian optical pattern .

[0078] FIGS. 7A - 13 show an optical lens assembly 1 shown in FIGS. 4A - 4B according to one embodiment ​​Fig. 1 shows an embodiment of the electrosurgical device 112 including 42. As shown in Figs. 7A-7B the housing 123 of the electrosurgical device 112 has a proximal end and a distal end and includes a handle 124 and a shaft 126 extending from the distal end of the handle 124. The electrosurgical electrode 128 extends from the distal end of the shaft 126, and a plurality of light sources 140 are provided on the shaft 126. The handle 124 defines an internal bore 125, and the shaft 126 extends distally from the internal bore 125 of the handle 124. Also, in Figs. 7A-7B the distal portion 128A of the electrosurgical electrode 128 extends distally from the shaft 126 . In an example, the distal portion 128A of the electrosurgical electrode 128 defines a working end configured to apply electrosurgical energy to tissue .

[0079] In Figs. 7A-7B, to adjust the distance of the most distal tip of the electrosurgical electrode 128 relative to the handle 124 the shaft 126 is telescopically movable within the internal bore 125 of the handle 124. For example, Fig. 7A shows the shaft 126 in a first position relative to the handle 124 along the longitudinal axis of the electrosurgical device 112, and Fig. 7B shows the shaft 126 in a second position relative to the handle 124 along the longitudinal axis of the electrosurgical device 112. In Figs. 7A-7B, the first position is more proximal than the second position , whereby the shaft 126 is in a retracted position within the handle 124 in the first position and the shaft 126 is in an extended position from the handle 124 in the second position . As described above, the shaft 126 is telescopically movable relative to the handle 124 . ​​​Moving it can facilitate adjusting the length of the electrosurgical device to treat target tissues of different sizes and / or shapes. However, as described above , in other embodiments, the shaft 126 can be fixedly coupled to the handle 124 such that the shaft 126 is not movable relative to the handle 124 .

[0080] In some embodiments, the electrosurgical device 112 can include a collar 762 at the proximal end of the handle 124 . The collar 762 can be rotatable relative to the handle 124 to increase and / or reduce the friction between the outer surface of the shaft 126 and the inner surface of the collar 762 . Thereby, the collar 762 allows and / or blocks the axial telescopic movement of the shaft 126 relative to the handle 124 .

[0081] Additionally, in FIGS. 7A - 7B, the shaft 126 is fixed in the rotational direction relative to the handle 124, and the electrosurgical electrode 128 is rotatable relative to the handle 124 and the shaft 126 . This can simplify the design and reduce the manufacturing cost of the electrosurgical device 112 . For example, this arrangement of the handle 124, the shaft 126, and the electrosurgical electrode 128 can simplify the electrical connection between the housing conductor 134, the shaft conductor 1236, and the electrosurgical electrode 128 . Additionally, this arrangement can help reduce damage to the electrical connection during the telescopic movement of the shaft 126 relative to the handle 124 and / or during the rotation of the electrosurgical electrode 128 relative to the shaft 126 and the handle 124 .

[0082] ​​​​​​Figures 8 to 13 can facilitate the above-described telescopic movement and rotational movement. An additional aspect of the electrosurgical device 112 is shown. FIG. 8 shows a partially exploded view of the handle 124. As shown in FIG. 8, the handle 124 can be coupled to the lower portion 86 4B so as to define an internal bore 125 therebetween. The upper portion 864A can be included. Generally, the internal bore 125 can be a space within the handle 124 capable of accommodating one or more components of the electrosurgical device 112. .

[0083] Within the internal bore 125 of the handle 124, the electrosurgical device 112 includes a shaft guide 866 extending in a direction parallel to the longitudinal axis of the handle 124 (e.g., a direction extending between the proximal end 124A of the handle 124 and the distal end 124B of the handle 124). The shaft guide 866 is configured to extend within the internal cavity 868 of the shaft 126. The internal cavity 868 of the shaft 126 can be a bore extending between the proximal end 126A of the shaft 126 and the distal end 126B of the shaft 126 (shown in FIGS. 7A-7B ). Thus, the internal cavity 868 can be defined by the inner surface of the shaft 126. )).

[0084] As shown in FIG. 8, the shaft guide 866 can have a non-circular cross-sectional shape to help prevent rotation between the shaft 126 and the handle 124. For example, , the outer surface of the shaft guide 866 extending within the internal cavity 868 of the shaft 126 is , the non-circular shape of the inner surface of the shaft 126 within the internal cavity 868 of the shaft 126 It can have a mating non-circular shape. In this arrangement, the shaft 126 can slide proximally and distally on the shaft guide 866 (e.g., along the longitudinal axis of the handle 124), but the shaft 126 is prevented from rotating relative to the shaft guide 866 by engagement between (i) the inner surface of the cavity 868 of the shaft 126 and (ii) the outer surface of the shaft guide 866. Also, as shown in FIG. 8, the shaft guide 866 is rotationally fixed relative to the handle 124. For example, a portion of the shaft guide 866 can have a non-circular shape that can engage a structure in the handle 124 having a corresponding shape. In FIG. 8, for example, the proximal portion of the shaft guide 866 has hexagonal features that engage hexagonal sockets formed in the inner wall of the handle 124 (e.g., the inner walls of the upper portion 864A and / or the lower portion 864B of the handle 124) to prevent rotation between the shaft guide 866 and the handle 124. In this arrangement, the shaft 126 is rotationally fixed relative to the handle 124 as a result of a first non-rotational engagement between the shaft 126 and the shaft guide 866 and a second non-rotational engagement between the shaft guide 866 and the handle 124. As described above, the electrosurgical electrode 128 is coupled to the shaft 126, and the electrosurgical electrode 128 is rotatable relative to the handle 124 and the shaft 126. Exemplary arrangements for coupling the electrosurgical electrode 128 to the shaft 126 in a form that permits such rotation of the electrosurgical electrode 128 are shown in FIGS. 9-10. FIG. 9 is as shown in FIGS. 7A-7B.

[0085] Also, as shown in FIG. 8, the shaft guide 866 is rotationally fixed relative to the handle 124. For example, a portion of the shaft guide 866 can have a non-circular shape that can engage a structure in the handle 124 having a corresponding shape. In FIG. 8, for example, the proximal portion of the shaft guide 866 has hexagonal features that engage hexagonal sockets formed in the inner wall of the handle 124 (e.g., the inner walls of the upper portion 864A and / or the lower portion 864B of the handle 124) to prevent rotation between the shaft guide 866 and the handle 124. In this arrangement, the shaft 126 is rotationally fixed relative to the handle 124 as a result of a first non-rotational engagement between the shaft 126 and the shaft guide 866 and a second non-rotational engagement between the shaft guide 866 and the handle 124. As described above, the electrosurgical electrode 128 is coupled to the shaft 126, and the electrosurgical electrode 128 is rotatable relative to the handle 124 and the shaft 126. Exemplary arrangements for coupling the electrosurgical electrode 128 to the shaft 126 in a form that permits such rotation of the electrosurgical electrode 128 are shown in FIGS. 9-10. FIG. 9 is as shown in FIGS. 7A-7B.

[0086] As described above, the electrosurgical electrode 128 is coupled to the shaft 126, and the electrosurgical electrode 128 is rotatable relative to the handle 124 and the shaft 126. Exemplary arrangements for coupling the electrosurgical electrode 128 to the shaft 126 in a form that permits such rotation of the electrosurgical electrode 128 are shown in FIGS. 9-10. FIG. 9 is as shown in FIGS. 7A-7B. ​​​​​​ Handle 124, shaft 126, and electrosurgical electrode 128 for the illustrated embodiment are shown in a cross-sectional view of the distal portion. FIG. 9 also shows a portion of the housing conductor 134 and the electrical contact 970 of the shaft conductor 136 according to the embodiment. FIG. 10 shows a perspective view of the electrical contact 970 shown in FIG. 9.

[0087] As shown in FIG. 9, the shaft 126 can include an electrical contact 970 coupled to the proximal portion 128B of the electrosurgical electrode 128. In particular, the electrical contact 970 is coupled to the proximal portion 128B of the electrosurgical electrode 128 such that the electrosurgical electrode 128 is rotatable relative to the electrical contact 970. In this embodiment, the electrosurgical electrode 128 and the electrical contact 970 are electrically coupled at all rotational positions of the electrosurgical electrode 128 relative to the electrical contact 970.

[0088] In an embodiment, the electrical contact 970 can frictionally engage the proximal portion 128B of the electrosurgical electrode 128 such that (i) the electrical contact 970 prevents rotation of the electrosurgical electrode 128 relative to the electrical contact 970 when a force less than a threshold force is applied to the electrosurgical electrode 128, and (ii) the electrical contact 970 allows rotation of the electrosurgical electrode 128 relative to the electrical contact 970 when a force greater than the threshold force is applied to the electrosurgical electrode 128. The threshold force can be large enough to prevent the electrosurgical electrode 128 from freely rotating under gravity only and / or to prevent the electrosurgical electrode 128 from rotating when the electrosurgical electrode 128 is used to cut and / or coagulate tissue. The threshold force can be, additionally or alternatively, an amount of force sufficient to prevent the electrosurgical electrode 128 from rotating when a separate tool or instrument is used ​​​​​​​​​​​​​​The user can manually rotate the electrosurgical electrode 128 relative to the handle 124 without doing anything and can be made with a sufficiently low amount of force.

[0089] To provide a frictional engagement between the proximal portion 128B of the electrosurgical electrode 128 and the electrical contact 970 and to assist, the electrical contact 970 can extend over at least half of the circumference of the proximal portion 128B of the electrosurgical electrode 128. For example, in FIG. 10, the electrical contact 970 extends over more than half of the circumference of the proximal portion 128B of the electrosurgical electrode 128 and is biased inwardly to apply a force to the proximal portion 128B of the electrosurgical electrode 128 and includes a pair of arms 971. Thereby, the force applied by the electrical contact 970 can help control the rotation of the electrosurgical electrode 128 relative to the shaft 126 and the handle 124 . Additionally, in this arrangement, the arms 971 of the electrical contact 970 can allow the electrosurgical electrode 128 to rotate more than 360 degrees about the axis of rotation (e.g., the central axis of the electrosurgical electrode 128) . The electrical contact 970 can also assist in axially holding the electrosurgical electrode 128 within the internal cavity 868 of the shaft 126. For example, the proximal portion 128B of the electrosurgical electrode 128 can include a first shoulder 972A that can engage the electrical contact 970 to prevent or inhibit axial movement of the electrosurgical electrode 128 relative to the shaft 126 in the distal direction . Additionally, for example, the proximal portion 128B of the electrosurgical electrode 128 can prevent axial movement of the electrosurgical electrode 128 relative to the shaft 126 in the proximal direction so that the shaft

[0090] It can include a second shoulder 972B that can engage with the stopper 973 of the shaft 126. It is possible.

[0091] In some embodiments, the engagement between the first shoulder 972A and the electrical contact 970 is such that the electrical The surgical electrode 128 can be prevented or stopped from being removed from the shaft 126 so that the surgical electrode 128 is fixedly coupled to the shaft 126. In an alternative embodiment, the engagement between the first shoulder 972A and the electrical contact 970 allows the electrical surgical electrode 128 to be removed and replaced with another electrical surgical electrode 128.

[0092] Additionally, as shown in FIGS. 9-10, the electrical contact 970 can include a first end 970A coupled to the proximal portion 128B of the electrical surgical electrode 128 and a second end 970B extending into the handle 124. As shown in FIG. 9, the second end 970B engages a housing conductor 134 extending along the handle 124 in a direction parallel to the longitudinal axis of the handle 124. In this embodiment, the second end 970B of the electrical contact 970 is configured to remain engaged with the housing conductor 134, while the shaft 126 moves telescopically relative to the handle 124. For example, the electrical contact 970 is fixedly coupled to the shaft 126 such that the electrical contact 970 moves with the shaft 126 relative to the handle 124. In this arrangement, the second end 970B of the electrical contact 970 can continuously engage and electrically couple with the housing conductor 134 while the second end 970B slides along the housing conductor 134 in response to axial movement of the shaft 126 relative to the handle 124. Thereby, the electrical contact 9 ​ 70 allows for any rotational position of the electrosurgical electrode 128 relative to the handle 124 and / or Electrosurgical energy can be delivered to the electrosurgical electrode 128 at any axial position. It can be easily done.

[0093] As shown in FIG. 9, the shaft 126 extends from the proximal end 126A of the shaft 126. It may also include a smoke evacuation channel 148 extending to the distal end 126B of the lid 126. For example, in Figures 7A, 7B and 9, electrosurgical electrode 128 is shown with smoke evacuation channel 148. A gap may be defined between the electrosurgical electrode 128 and the interior surface of the shaft 126. 126. The illustrated embodiment 1, the shaft 126 has a center extending between a proximal end 126A and a distal end 126B. The electrosurgical electrode 128 has a central axis that is collinear with the central axis of the shaft 126. In this arrangement, the smoke evacuation channel 148 extends around the electrosurgical electrode 128. This allows the electrosurgical electrode 128 to have a substantially constant size. However, this can help provide a relatively constant suction at each point. In other embodiments, the central axes of electrosurgical electrode 128 and shaft 126 are parallel to one another. , and may be offset and parallel to each other.

[0094] Referring to FIG. 8, an internal cavity 868 at the proximal end 126A of the shaft 126 can provide the proximal end of the smoke evacuation channel 148 (shown in FIG. 9). The proximal end of the smoke channel 148 is in fluid communication with a smoke evacuation chamber 152 in the handle 124. It is possible. For example, in FIG. 8, the smoke exhaust chamber 152 is the shaft guide 866 including the bore 874 in and the inner bore of the handle 124 proximal to the shaft guide 866 of the portion 125.

[0095] Referring to FIG. 9 again, the electrosurgical device 122 can also include a suction sleeve 975 that can be fluidly coupled to the smoke exhaust channel 148 in the shaft 126. As shown in FIG. 9 the distal portion of the suction sleeve 975 can extend distally from the distal end 126B of the shaft 126, and the electrosurgical electrode 128 can extend through the suction sleeve 975 Specifically, the suction sleeve 975 can be spaced from the electrosurgical electrode 1 128 so as to define a smoke inlet that can extend circumferentially around the central axis of the distal portion 128A of the electrosurgical electrode 128 128. In one embodiment, the suction sleeve 975 can be fixed in the rotational direction with respect to the electrosurgical electrode 128 such that rotation of the suction sleeve 975 with respect to the shaft 126 results in corresponding rotation of the electrosurgical electrode 128 with respect to the shaft 126 and the handle 124. In this arrangement

[0096] the user can use the suction sleeve 975 to rotate the electrosurgical electrode 128 with respect to the handle 124. Thereby, advantageously, the user can avoid directly touching the electrosurgical electrode 128. Because the electrosurgical electrode 128 may be relatively hot during and after use In addition, directly touching the electrosurgical electrode 128 may adversely affect the coating of the electrosurgical electrode 128 so the suction sleeve 975 protects the structural integrity and operational performance of the electrosurgical electrode 128 This can advantageously avoid the user directly touching the electrosurgical electrode 128. Since the electrosurgical electrode 128 may be relatively hot during and after use In addition, directly touching the electrosurgical electrode 128 may have an adverse effect on the coating of the electrosurgical electrode 128 so the suction sleeve 975 protects the structural integrity and operational performance of the electrosurgical electrode 128 from being directly touched by the user. This is because the electrosurgical electrode 128 may be relatively hot during and after use. Additionally, directly touching the electrosurgical electrode 128 may affect the coating of the electrosurgical electrode 128 adversely can help to maintain.

[0097] In FIG. 9, the suction sleeve 975 includes one or more teeth 976, and the electrosurgical electrode 128 includes one or more slots 977. Each of the one or more teeth 976 of the suction sleeve 975 engages with one or more of the one or more slots 977 in response to rotation of the suction sleeve 975 to rotate the electrosurgical electrode 128. However, in another embodiment, the suction sleeve 975 can include one or more slots 977 and the electrosurgical electrode 128 can include one or more teeth 976. In some embodiments, the suction sleeve 975 can be telescopically movable within the internal cavity 868 of the shaft 126 to adjust the distance between the suction sleeve 975 and the most distal tip of the electrosurgical electrode 128. For example, each of the one or more teeth 976 can be configured to slide longitudinally within each of the one or more slots 977 in response to the suction sleeve 975 moving telescopically relative to the shaft 126 and / or the electrosurgical electrode

[0098] 128. In this telescopic arrangement, the suction sleeve 975 can move relative to the shaft 126 and the electrosurgical electrode 128 to adjust the extent of the distal portion 128A of the electrosurgical electrode 128 that is exposed. In particular, the suction sleeve 975 can (i) expose a greater extent of the electrosurgical electrode 128 and increase visibility at the surgical site by moving relative to the shaft 126 and / or the electrosurgical electrode 128. For example, each of the one or more teeth 976 can be configured to slide longitudinally within each of the one or more slots 977 in response to the suction sleeve 975 moving telescopically relative to the shaft 126 and / or the electrosurgical electrode 128. In this telescopic arrangement, the suction sleeve 975 can move relative to the shaft 126 and the electrosurgical electrode 128 to adjust the extent of the distal portion 128A of the electrosurgical electrode 128 that is exposed. In particular, the suction sleeve 975 can (i) expose a greater extent of the electrosurgical electrode 128 and increase visibility at the surgical site by moving relative to the shaft 126 and the electrosurgical electrode 128. In particular, the suction sleeve 975 can (i) expose a greater extent of the electrosurgical electrode 128 and increase visibility at the surgical site by moving relative to the shaft 126 and the electrosurgical electrode 128. In particular, the suction sleeve 975 can (i) expose a greater extent of the electrosurgical electrode 128 and increase visibility at the surgical site by moving relative to the shaft 126 and the electrosurgical electrode 128. In particular, the suction sleeve 975 can (i) expose a greater extent of the electrosurgical electrode 128 and increase visibility at the surgical site by moving relative to the shaft 126 and the electrosurgical electrode 128. In particular, the suction sleeve 975 can (i) expose a greater extent of the electrosurgical electrode 128 and increase visibility at the surgical site by moving relative to the shaft 126 and expose a greater range of the electrosurgical electrode 128 and enhance visibility at the surgical site by moving relative to the shaft 126 moved towards the distal end 126B, and (ii) exposes a smaller area of the electrosurgical electrode 128 and captures a relatively larger amount of smoke at the surgical site, and can be moved away from the distal end 126B of the shaft 126. It may be advantageous for the aspiration sleeve 975 to be telescopically movable relative to the shaft 126 and / or the electrosurgical electrode 128. In other embodiments, however, the aspiration sleeve 975 can be axially fixed relative to the shaft 126 and / or the electrosurgical electrode 128. This can simplify manufacturing and reduce manufacturing costs.

[0099] In one embodiment, the aspiration sleeve 975 can be made substantially transparent such that the electrosurgical electrode 128 is visible through the aspiration sleeve 975. This can help enhance the visibility of the electrosurgical electrode 128. However, in other embodiments, the aspiration sleeve 975 can be formed from an opaque material.

[0100]

[0101] FIG. 11 shows the distal portion of the shaft 126 with the upper portion removed to show the optical components disposed within the internal cavity 868 of the shaft 126. FIG. 12 shows the optical lens assembly 142 shown in FIGS. 4A-4B, with the electrosurgical electrode 128 and the aspiration sleeve 975 defining a portion of the smoke exhaust channel 148 extending through the lens aperture 411 of the optical lens assembly 142 and the PCB aperture 409 of the LED PCB 407.

[0102] As shown in FIGS. 9 and 11-12, the electrosurgical device 112 includes the shaft 126 of the ​​​​​​​​​​​​Containing a light source 140 and an optical lens assembly 142 in an internal cavity 868 As described above, the light source 140 emits light into the optical lens assembly 142. The optical lens assembly 142 is configured to direct light from the light source 140 in a distal direction. The shaft 126 is configured to transmit light and emit light from the distal end 126B of the shaft 126.

[0103] As shown in FIG. 12, the electrosurgical electrode 128 and suction sleeve 975 are PCB opening 409 of CB407 and lens opening 4 in optical lens assembly 142 12. The stator 10 may extend through a throughbore defined by the stator 11. As shown, the light source 140 may be positioned around the electrosurgical electrode 128. In the arrangement, the electrosurgical device 112 provides illumination and suction around the electrosurgical electrode 128. Furthermore, in this arrangement, the optical lens assembly 1 shown in FIGS. Integrating 42 improves the quality of illumination, reduces the size of the distal end of the electrosurgical device, and reduces the size of the hand. Line of sight to the surgical site can be improved.

[0104] As shown in FIG. 11, the electrosurgical device 112 includes a heater coupled proximally to the light source 140. The electrosurgical device 11 may also include a power sink 1180, which is connected to the light source 140 and thus to the electrosurgical device 11. 2 can help lower the temperature.

[0105] In one embodiment, the light source 140, the optical lens assembly 142, and / or the heat sink Link 1180 may be fixedly coupled to shaft 126. In this arrangement, The electrosurgical electrode 128 and suction sleeve 975 are connected to the light source 140, the optical lens assembly 1 It can be rotatable relative to 42 and / or the heat sink 1180. For example the openings in the light source 140, the optical lens assembly 142 and / or the heat sink 1180 are sized and / or shaped (e.g., circular shape) to allow the electrosurgical electrode 128 and the suction sleeve 975 to rotate at the opening . Additionally in this arrangement, the light source 140, the optical lens assembly 142 and the heat sink 1 180 can be telescopically movable relative to the handle 124 together with the shaft 126 .

[0106] As described above, the housing conductor 134 and the shaft conductor 136 can provide for electrically coupling the light source 140 to the DC power supply 144. FIG. 13 shows the electrosurgical device 112 of FIGS. 7A - 12 with components removed to show the housing conductor 134 and the shaft conductor 13 6 for supplying DC power to the light source 140 according to one embodiment. As shown in FIG 13, the shaft 126 includes a positive - photoconductor 1336A and a negative - photoconductor 1336 B that slidably engages corresponding conductors 1334A, 1334B in the handle 124 while the shaft 126 moves telescopically axially relative to the handle 124 .

[0107] As shown in FIGS. 7A - 8 and 13, the user input device 130 includes a first button 730A and a second button 730B on the outer surface of the handle 124 . In one embodiment the first button 730A can be actuated to operate the electrosurgical device 122 in a cutting operation mode and the second button 730B can be actuated to operate the electrosurgical device 122 in a coagulation operation mode It can be actuated to operate with D. In this embodiment, a third button (not shown in the figure) is provided on the plug of the power cord 122 and / or the electrosurgical generator 110. The third button can be actuated to operate the light source 140 (i.e., to cause the light source 140 to emit light or to stop emitting light). As described above, the user input device 130 can be configured differently in other embodiments. For example, the electrosurgical device 112 can be made operable in a smaller number of operating modes, in a larger number of operating modes, and / or in different types of operating modes in other embodiments (e.g., the exemplary operating modes described above, etc.). Additionally, for example, at least one user input device 130 can additionally or alternatively include a user interface 116 of the electrosurgical generator 110 and / or another external device (e.g., a foot switch) for operating the electrosurgical device 112 in one or more operating modes. Also, for example, the user input device 130 on the handle 124 can include a third button for operating the light source 140. It can be provided on the plug of the power cord 122 and / or the electrosurgical generator 110. The third button can be actuated to operate the light source 140 (i.e., to cause the light source 140 to emit light or to stop emitting light). As described above, the user input device 130 can be configured differently in other embodiments. For example, the electrosurgical device 112 can be made operable in a smaller number of operating modes, in a larger number of operating modes, and / or in different types of operating modes in other embodiments (e.g., the exemplary operating modes described above, etc.). For example, in a smaller number of operating modes, in a larger number of operating modes, and / or in different types of operating modes in other embodiments (e.g., the exemplary operating modes described above, etc.). and / or in different types of operating modes in other embodiments (e.g., the exemplary operating modes described above, etc.). For example, the electrosurgical device 112 can be made operable in a smaller number of operating modes, in a larger number of operating modes, and / or in different types of operating modes in other embodiments (e.g., the exemplary operating modes described above, etc.). Additionally, for example, at least one user input device 130 can additionally or alternatively include a user interface 116 of the electrosurgical generator 110 and / or another external device (e.g., a foot switch) for operating the electrosurgical device 112 in one or more operating modes. and / or another external device (e.g., a foot switch) for operating the electrosurgical device 112 in one or more operating modes. For example, in a smaller number of operating modes, in a larger number of operating modes, and / or in different types of operating modes in other embodiments (e.g., the exemplary operating modes described above, etc.). for operating the electrosurgical device 112 in one or more operating modes. The user input device 130 on the handle 124 can include a third button for operating the light source 140.

[0108] Figures 14 to 20 show embodiments of the electrosurgical device 112 of FIG. 1 and the optical lens assembly 142 of FIGS. 5A to 5B according to another embodiment. FIG. 14 shows a perspective view of the electrosurgical device 112 according to an embodiment. FIG. 15 shows a cross-sectional view of the electrosurgical device 112 taken along the longitudinal axis 1482 of the electrosurgical device according to an embodiment. As shown in FIGS. 14 to 15, the electrosurgical device 112 defines an internal bore 125. FIG. 14 shows a perspective view of the electrosurgical device 112 according to an embodiment. FIG. 15 shows a cross-sectional view of the electrosurgical device 112 taken along the longitudinal axis 1482 of the electrosurgical device according to an embodiment.

[0109] As shown in FIGS. 14 to 15, the electrosurgical device 112 defines an internal bore 125. a handle 124, a shaft 126 extending distally from an internal bore 125 of the handle 124; and a smoke exhaust channel 148 in an internal cavity 1468 of the shaft 126. The shaft 126 has a proximal end 126A and a distal end 126B of the shaft 126. Additionally, electrosurgical electrode 128 has a longitudinal axis 1482 extending between the shaft It extends distally from the distal end 126B of the outlet 126.

[0110] In one embodiment, shaft 126 is adapted to connect electrosurgical electrode 128 to handle 124. A telescopic mechanism is provided in the interior bore 125 of the handle 124 to adjust the distance of the most distal tip. As described above, the shaft can be moved relative to the handle 124. Telescoping the 126 allows for targeting of different sizes and / or shapes. This makes it easy to adjust the length of the electrosurgical device to treat tissue. However, as mentioned above, in other embodiments, the shaft 126 may be fixedly coupled to the handle 124 so that it is not movable relative to the handle 124. can.

[0111] In some embodiments, the electrosurgical device 112 includes a collar attached to the proximal end of the handle 124. The collar 1462 may include a collar 1462 that is secured to the outer surface of the shaft 126 and the collar 146 2. The handle 124 may be rotated to increase and / or decrease the friction between the inner surfaces of the handle 124 and the inner surfaces of the handle 124. This allows the collar 1462 to rotate relative to the handle 124. Axial telescopic movement of the shaft 126 can be permitted and / or prevented.

[0112] Additionally, in FIGS. 14-15, the shaft 126 is rotatable relative to the handle 124 and the smoke exhaust channel 148 is fixed in the rotational direction relative to the handle 124. Additionally, as will be described in more detail below, the electrosurgical device 112 can further include the light source 140 and the optical lens assembly 142, both of which can also be fixed in the rotational direction relative to the handle 124. Fixing the smoke exhaust 148, the light source 140 and / or the optical lens assembly 142 in the rotational direction while providing rotation of the electrosurgical electrode 128 together with the shaft 126 can help simplify the design and / or reduce the manufacturing cost of the electrosurgical device 112.

[0113] The rotational arrangement of these components of the electrosurgical device 112 can be achieved, at least in part, as a result of (i) the shaft 126 conducting electrosurgical energy to the electrosurgical electrode 128 and (ii) the rotation of the shaft 126 relative to the handle 124 causing a corresponding rotation of the electrosurgical electrode 128 relative to the handle 124, such that the electrosurgical electrode 128 extends distally from the distal end 126B of the shaft 126. For example, at least a portion of the shaft 126 can be formed of a conductive material such that the shaft 126 is a shaft conductor 136 (e.g., a conduit defining at least partially an internal cavity 1468) for supplying electrosurgical energy to the electrosurgical electrode 128.

[0114] In one embodiment, the electrosurgical electrode 128 and the shaft 126 are formed as a single-piece monolithic structure. This allows the electrosurgical electrode 128 to be replaced with another electrosurgical electrode 128 The electrosurgical electrode 128 is permanently fixed to the shaft 126 so that it cannot be exchanged This may be advantageous in embodiments where it is. In another example, the electrosurgical electrode 1 28 and the shaft 126 can be separate components joined to each other (e.g., by welding, soldering, and / or friction fit ). In some embodiments where the electrosurgical electrode 128 and the shaft 126 are separate components, the electrosurgical electrode 1 28 is removable from the shaft 126 and can be exchanged with another electrosurgical electrode 128. In other embodiments, the electrosurgical electrode 128 can be permanently fixed to the shaft 126 so that it cannot be exchanged with another electrosurgical electrode 128

[0115] In FIGS. 14-15, the shaft 126 includes a conductive portion 126C and an insulator portion 1 26D. As described above, the electrosurgical electrode 128 can extend from the conductive portion 12 6C of the shaft 126. The insulator portion 126D of the shaft 126 can be a three-layer structure that covers the interface between the electrosurgical electrode 128 and the conductive portion 126C of the shaft 126 . In this arrangement, the insulator portion 126D can help reduce arc discharge and / or help supply electrosurgical energy to the electrosurgical electrode 128 . Additionally, the shaft 126 can have a layer of insulator material 126E (e.g., heat shrink material) that covers the remainder of the conductive portion 126C of the shaft 126 (e.g., the portion not covered by the insulator portion 126D of the shaft 126) to help reduce arc discharge and / or help supply electrosurgical energy to the electrosurgical electrode 128 ​​​​​​​​​It can include.

[0116] Referring now to FIG. 16, a view of a shaft 1482 viewed along a longitudinal axis 1482, according to one embodiment. An enlarged view of the distal end 126B of the suction cup 126 and a cross section of the electrosurgical electrode 128 is shown. As shown in FIG. 16, a distal portion 128A of the electrosurgical electrode 128 is positioned to apply the electrosurgical energy to the tissue. The electrosurgical electrode may define a working end configured to apply energy thereto. The proximal portion 128B of the shaft 126 is a first leg extending from the distal end 126B of the shaft 126. 1684A and a second leg 1684B extending from the distal end of the conductive portion 126C of the shaft 126. 684B.

[0117] In FIG. 16, the first leg 1684A and the second leg 1684B are attached to the shaft 12 6 are diametrically opposed to each other along the periphery of the distal end 126B of the The proximal-facing surface 1685 of the proximal portion 128B of the surgical electrode 128 is 5 and a flat surface 1687 at the most distal end of the shaft 126. The shaft 126 tapers distally toward the central axis of the shaft 126 so as to The gap 1686 can improve airflow and This can help increase suction.

[0118] Additionally, as shown in FIG. 16, the sleeve structure of the insulator portion 126D may be configured to accommodate an optical lens. The sleeve structure may extend around the assembly 142. The sleeve structure may be made of an optically opaque material. To increase the intensity of the light emitted from the optical lens assembly 142, At least a portion of the distal transmitting surface of each of the optical lens assemblies 142 is insulator portion 12. It can extend to a position distal to the most distal end of the 6D sleeve structure.

[0119] Referring again to FIG. 15, the shaft 126 extends along the handle 124 in a direction parallel to the longitudinal axis 1482 (as shown in FIG. 14) of the handle 124. It can include an electrical contact 1570 that engages a housing conductor 134. The electrical contact 1570 can be configured to remain engaged with the housing conductor 134 while the shaft 126 moves telescopically relative to the handle 124. For example, the electrical contact 1570 is fixedly coupled to the shaft 126 such that the electrical contact 1570 moves with the shaft 126 relative to the handle 124. In this arrangement, the electrical contact 1570 can continuously engage and be electrically coupled to the housing conductor 134 while the electrical contact 1570 slides along the housing conductor 134 in response to axial movement of the shaft 126 relative to the handle 124. It can include an electrical contact 1570 that engages a housing conductor 134. while the shaft 126 moves telescopically relative to the handle 124. It can be configured to remain engaged. For example, the electrical contact 1570 is fixedly coupled to the shaft 126 such that the electrical contact 1570 moves with the shaft 126 relative to the handle 124. In this arrangement, the electrical contact 1570 is responsive to axial movement of the shaft 126 relative to the handle 124, the electrical contact 1570 continuously engages and can be electrically coupled to the housing conductor 134 while sliding along the housing conductor 134.

[0120] Additionally, the electrical contact 1570 can extend along the periphery of the shaft 126 such that the electrical contact 1570 remains engaged with the housing conductor 134 at all rotational positions of the shaft 126 and the electrosurgical electrode 128 relative to the handle 124. Thereby, the electrical contact 1570 can facilitate supplying electrosurgical energy to the electrosurgical electrode 128 at any rotational position and / or any axial position of the electrosurgical electrode 128 relative to the handle 124. and the electrosurgical electrode 128 relative to the handle 124. It can extend along the periphery of the shaft 126 so that it can remain engaged. Thus, the electrical contact 1570 is at any rotational position and / or any axial position of the electrosurgical electrode 128 relative to the handle 124 to supply electrosurgical energy to the electrosurgical electrode 128.

[0121] In one embodiment, the shaft 126 and the electrosurgical electrode 128 are relative to the handle 124. ​​It can be made rotatable by more than 360 degrees. In this embodiment, the electrical contact 1570 can extend entirely around the shaft 126. In another embodiment the shaft 126 and the electrosurgical electrode 128 can be rotatable by less than 3 60 degrees relative to the handle 124. In such an embodiment, the electrical contact 15 70 extends at least partially around the shaft 126 to maintain electrical coupling between the shaft 126 and the housing conductor 134 over the entire range of rotational positions in which the shaft 126 and the electrosurgical electrode 128 can be positioned relative to the handle 124.

[0122] As described above, the electrosurgical electrode 128 includes a proximal portion 128B extending from the distal end of the shaft 126 and a distal portion 128A having a working end configured to apply electrosurgical energy to tissue. In FIGS. 14-16, the central axis of the distal portion 128A of the electrosurgical electrode 128 and the central axis of the smoke exhaust channel 148 are collinear. In this arrangement, the smoke exhaust channel 148 can have a substantially constant size along the periphery of the electrosurgical electrode 128. This can help provide relatively uniform suction at each point around the electrosurgical electrode 128. However, in other embodiments, the central axes of the electrosurgical electrode 128 and the shaft 126 can be offset from and parallel to each other.

[0123] Additionally, as shown in FIGS. 14-16, the smoke exhaust channel 148 has between a proximal end 148A of the smoke exhaust channel 148 and a distal end 148B of the smoke exhaust channel 148 any other ​​​​​​​​​​​​A space lacking the structure can be defined. This is compared with other embodiments where the electrosurgical electrode 128 and / or other components are arranged in the smoke exhaust channel 148 and provides for more efficient use of the relatively limited-sized internal cavity 1468 to enhance suction through the smoke exhaust channel 148.

[0124] Additionally, as described above, the smoke exhaust channel 148 is rotatable with respect to the handle 124 such that the shaft 126 and the electrosurgical electrode 128 are rotatable with respect to the smoke exhaust channel 148. FIGS. 17-18 show the smoke exhaust channel 148 and the shaft 126 according to one embodiment. As shown in FIGS. 15 and 17-18, at least a portion of the smoke exhaust channel 148 has a non-circular shape to prevent rotation of the smoke exhaust channel 148 with respect to the handle 124 while the shaft 126 and the electrosurgical electrode 128 rotate with respect to the handle 124. For example, the proximal end 148A of the smoke exhaust channel 148 can include a non-rotating fitting configured to engage a corresponding shape structure in the handle 124, and the non-rotating fitting can have a non-circular cross-sectional shape. In FIGS. 15 and 17, for example, the proximal end 148A of the smoke exhaust channel 148 has a hexagonal feature that engages a hexagonal socket formed in the inner wall of the handle 124 to prevent rotation between the smoke exhaust channel 148 and the handle 124. Additionally, as shown in FIG. 18, a gap can be defined between the shaft 126 and the smoke exhaust channel 148 to provide rotation of the shaft 126 with respect to the smoke exhaust channel 148.

[0125] For example, the proximal end 148A of the smoke exhaust channel 148 can include a non-rotating fitting configured to engage a corresponding shape structure in the handle 124, and the non-rotating fitting can have a non-circular cross-sectional shape. In FIGS. 15 and 17, for example, the proximal end 148A of the smoke exhaust channel 148 has a hexagonal feature that engages a hexagonal socket formed in the inner wall of the handle 124 to prevent rotation between the smoke exhaust channel 148 and the handle 124. Additionally, as shown in FIG. 18, a gap can be defined between the shaft 126 and the smoke exhaust channel 148 to provide rotation of the shaft 126 with respect to the smoke exhaust channel 148. In FIGS. 15 and 17, for example, the proximal end 148A of the smoke exhaust channel 148 has a hexagonal feature that engages a hexagonal socket formed in the inner wall of the handle 124 to prevent rotation between the smoke exhaust channel 148 and the handle 124. Additionally, as shown in FIG. 18, a gap can be defined between the shaft 126 and the smoke exhaust channel 148 to provide rotation of the shaft 126 with respect to the smoke exhaust channel 148. 124. Additionally, as shown in FIG. 18, a gap can be defined between the shaft 126 and the smoke exhaust channel 148 to provide rotation of the shaft 126 with respect to the smoke exhaust channel 148. 148. A gap can be defined between the shaft 126 and the smoke exhaust channel 148 to provide rotation of the shaft 126 with respect to the smoke exhaust channel 148.

[0126] As shown in FIG. 17, a non-rotating fitting at the proximal end 148A of the smoke evacuation channel 148 The fitting is located in the body 148C of the smoke evacuation channel 148 proximal to the non-rotating fitting. The through bore 1774 may include a through bore 1774 having a cross-sectional area smaller than the cross-sectional area of the through bore 1774. The relatively smaller size of 774 allows for the smoke to exit the proximal end 148A of the smoke evacuation channel 148. This can help direct the smoke into a relatively smaller volume of space when This advantageously prevents the electrical components in the interior bore 125 of the handle 124 from being exposed to smoke. This can help reduce or prevent

[0127] FIG. 19 illustrates a light source 140 in a smoke evacuation channel 148, according to one embodiment, in combination with the light source 140 shown in FIGS. 5A-5C. 5B and the assembly of the optical lens assembly 142 and the heat sink 1580. FIG. 20 shows an exploded view of the optical lens assembly 142 shown in FIGS. 5A-5B. and an assembly of an electrosurgical electrode 128.

[0128] As shown in FIGS. 15-16 and 19-20, the electrosurgical device 112 includes a housing. The shaft 126 of the ring 123 includes a light source 140 and an optical lens assembly 142. As described above, the light source 140 emits light into the optical lens assembly 142. The optical lens assembly 142 directs light from the light source 140 distally. and configured to transmit light in a direction away from the distal end 126B of the shaft 126. There are.

[0129] As shown in FIG. 20, the electrosurgical electrode 128 is connected to the proximal end of the electrosurgical electrode 128 and the It has a longitudinal axis 2031 that extends between the distal end of the surgical electrode 128. The light source 140 is circumferentially arranged around the longitudinal axis 2031 of the electrosurgical electrode 128. For example , as shown in FIG. 20, the lens aperture 411 can have a central axis that is collinear with the longitudinal axis 20 31 of the electrosurgical electrode 128. Arranging the light source 140 around the electrosurgical electrode 128 can help to disperse light over the entire circumference of the electrosurgical electrode 128, which can reduce shadows and provide better lighting uniformity at all rotational alignment positions of the electrosurgical electrode 128 relative to the handle 124 and / or the target tissue with respect to the electrosurgical device 112.

[0130] Additionally, the smoke exhaust channel 148 can extend through the lens aperture 4 11 in the optical lens assembly 142 and the PCB aperture 409 in the LED PCB 407. This can help to position the smoke exhaust channel 148 at the center of the shaft 126 (e.g., the central axis of the smoke exhaust channel 148 and the central axis of the shaft 126 can be collinear), which can enhance suction at the surgical site. In this arrangement, the electrosurgical device 112 can provide illumination and suction around the electrosurgical electrode 128. Furthermore, integrating the optical lens assembly 142 of FIGS. 3 and 5A - 5B into this arrangement can improve the quality of illumination, reduce the size of the distal end of the electrosurgical device, and improve the line of sight to the surgical site.

[0131] In one embodiment, the light source 140, the optical lens assembly 142 and / or the heat sink The ink 1580 can be fixedly coupled to the handle 124. In this arrangement, the shaft 126 and the electrosurgical electrode 128 can rotate about the light source 140, the optical lens assembly 142 and / or the heat sink 1580. For example, the light source 14 0, the optical lens assembly 142 and / or the heat sink 1580 are engaged with the non-circular shape of the body 148C of the smoke exhaust channel 148 to prevent the rotation of the light source 140, the optical lens assembly 142 and / or the heat sink 1580 relative to the handle 124 while the shaft 12 6 and the electrosurgical electrode 128 rotate relative to the handle 124. It can have a non-circular shape that can engage with the non-circular shape of the body 148C of the smoke exhaust channel 148. In FIGS. 19-20, the non-circular shape is an ellipse shape. However, the light source 140, the optical lens assembly 142, the heat sink 15 80 and / or the smoke exhaust channel 148 can have other non-circular shapes in other embodiments.

[0132] Additionally, in this arrangement, the light source 140, the optical lens assembly 142 and the heat sink 1580 can telescopically move relative to the handle 124 together with the shaft 126. As described above, the housing conductor 134 and the shaft conductor 136 can provide electrical coupling of the light source 140 to the DC power source 144 during such telescopic movement. As shown in FIG. 19, the shaft 126 includes a positive-photoconductor 1536A and a negative-photoconductor 1536B that slidably engage with corresponding conductors in the handle 124 while the shaft 126 telescopically moves axially relative to the handle 124.

[0133] Referring now to FIG. 21, the optical lens assembly 14 shown in FIG. 3 according to one embodiment 21, a cross-sectional view of the optical component 301 is shown. Assembly 142 includes a proximal reflective surface 303 and a distal transmissive surface 305 having aspheric shapes. Additionally, FIG. 21 illustrates the cavity 41 of the optical component 301 at the proximal end 142A. 21 further illustrates the light source 140 housed in the distal transmissive surface 305. 303. The light emitted by the light source 140 is reflected and collimated by the proximal reflective surface 303 when the light is incident on the proximal reflective surface 303. 10 shows ray trajectories illustrating exemplary emitted rays.

[0134] FIG. 22 illustrates an exemplary optical lens assembly 142 for the optical lens assembly 142 shown in FIGS. 4A-4B. 23 shows the optical output pattern of the optical lens shown in FIGS. 5A-5B according to an embodiment. 1 shows an exemplary optical output pattern for assembly 142.

[0135] Referring now to FIG. 24, a process 2400 for operating an electrosurgical device according to an embodiment is shown. As shown in FIG. 24, the process 24 begins with block 24 10, providing an electrosurgical device having a proximal end and a distal end. The electrosurgical device may include a housing having a distal end. The surgical instrument may also include an electrosurgical electrode extending distally from the housing and a plurality of light sources in the housing. A plurality of light sources can be configured to generate light.

[0136] Additionally, the electrosurgical device includes an optical lens assembly having a proximal end and a distal end. The optical lens assembly may include: (i) a distal end of the optical lens assembly; coupled to each other, and (ii) spaced apart from each other at the proximal end of the optical lens assembly and may include a plurality of optical components. Each optical component is optically coupled to a respective one of the plurality of light sources Each optical component is optically coupled to the optical component and includes a proximal reflecting surface extending distally from the respective light source to which it is optically coupled, and a distal transmitting surface at the distal end of the optical lens assembly The proximal reflecting surface is configured to reflect the light emitted by the respective light source toward the distal end, and the proximal reflecting surface may have an aspherical shape configured to substantially collimate the light reflected by the proximal reflecting surface The distal transmitting surface is configured to output light from the optical component in the distal direction The proximal reflecting surface is configured to reflect the light emitted by the respective light source toward the distal end The proximal reflecting surface may have an aspherical shape configured to substantially collimate the light reflected by the proximal reflecting surface The distal transmitting surface is configured to output light from the optical component in the distal direction

[0137] In block 2412, process 2400 includes emitting light by a plurality of light sources After emitting light in block 2412, process 2400, in block 2414, (i) reflects the light substantially collimated by the proximal reflecting surface of the optical component toward the distal end, and (ii) outputs the light in the distal direction by the distal transmitting surface of the optical component, thereby including transmitting light through each optical component In block 2414, (i) reflects the light substantially collimated by the proximal reflecting surface of the optical component toward the distal end, and (ii) outputs the light in the distal direction by the distal transmitting surface of the optical component, thereby including transmitting light through each optical component reflects the light substantially collimated by the proximal reflecting surface of the optical component toward the distal end, and (ii) outputs the light in the distal direction by the distal transmitting surface of the optical component, thereby including transmitting light through each optical component reflects the light substantially collimated by the proximal reflecting surface of the optical component toward the distal end, and (ii) outputs the light in the distal direction by the distal transmitting surface of the optical component, thereby including transmitting light through each optical component reflects the light substantially collimated by the proximal reflecting surface of the optical component toward the distal end, and (ii) outputs the light in the distal direction by the distal transmitting surface of the optical component, thereby including transmitting light through each optical component

[0138] 25 to 30 show additional aspects of process 2400 according to another embodiment. As shown in FIG. 25, process 2400 may also include supplying electrosurgical energy to the electrosurgical electrode in block 2420 In one embodiment, supplying electrosurgical energy to the electrosurgical electrode in block 2420 can be performed while emitting light in block 2412 In one embodiment, supplying electrosurgical energy to the electrosurgical electrode in block 2420 can be performed while emitting light in block 2412 In one embodiment, supplying electrosurgical energy to the electrosurgical electrode in block 2420 can be performed while emitting light in block 2412 In one embodiment, supplying electrosurgical energy to the electrosurgical electrode in block 2420 can be performed while emitting light in block 2412

[0139] As shown in FIG. 26, reflecting light by the proximal reflecting surface in block 2416 can include reflecting light by total internal reflection in block 2422. In the embodiment shown in FIG. 26, the proximal reflecting surface can be a total internal reflection (TIR) reflector.

[0140] In the embodiment shown in FIG. 27, at the proximal end of the optical lens assembly, each optical component defines a cavity, and in this cavity, each light source is arranged such that a plurality of light sources are located distal to the most proximal surface of the optical lens assembly. As shown in FIG. 27, emitting light in block 2412 can include emitting light from a plurality of light sources at a location distal to the most proximal surface of the optical lens assembly in block 2424.

[0141] As shown in FIG. 28, emitting light in block 2412 can include emitting light from a plurality of light sources across a gap to the proximal reflecting surface in block 2426.

[0142] As shown in FIG. 29, emitting light in block 2412 can include emitting light from a plurality of light sources equally spaced around the longitudinal axis of the electrosurgical electrode in block 2428.

[0143] As shown in FIG. 30, outputting light distally by the distal transmission surface in block 2418 can include transmitting light through the aspherical lens of each distal transmission surface in block 2430. ​​​​​​​​​

[0144] As shown in FIG. 31, in block 2418, the distal transmitting surface directs the light in a distal direction. Outputting includes directing light through a Fresnel lens at each distal transmitting surface in block 2432. This can include transmitting.

[0145] In the embodiment shown in FIG. 32, multiple light sources are coupled to a printed circuit board (PCB). The PCB may include a plurality of light emitting diodes (LEDs) mounted within the PCB opening. The electrosurgical device may include a PCB opening in the PCB and a ring having A suction tube may be included that extends through an opening in the optical lens assembly. The source may be disposed around the circumference of the suction tube. As shown in FIG. 32, the process 2400 may also include applying suction to the suction tube at block 2434. .

[0146] As shown in FIG. 33, outputting light in block 2418 At 36, an optical lens assembly is provided in a plane distal to the distal end of the electrosurgical electrode. The light emitted by the bulb has a substantially uniform intensity at each point in space. The light output may include outputting light such that:

[0147] As shown in FIG. 34, outputting light in block 2418 At 38, the light defines a light pattern at a plane distal to the distal end, The light intensity in the weakest part of the light pattern is less than the light intensity in the strongest part of the light pattern. It can include outputting light so as to have an intensity of at least 50 percent. .

[0148] The description of different advantageous arrangements is presented for purposes of illustration and explanation and is not intended to be exhaustive or limited to the embodiments in the disclosed form. Many modifications and variations will be apparent to those skilled in the art. Further, different advantageous embodiments may describe different advantages as compared to other advantageous embodiments. The one or more embodiments selected are chosen and described so that others skilled in the art can understand the disclosure of various embodiments with various modifications that are provided as being suitable for a contemplated particular use.

[0149] Also, any alternative features of the described variations of the invention may be shown and claimed independently or in combination with any one or more of the features described in this specification. Similarly, reference to singular items includes the possibility that there are multiple same items. More specifically, as used in this specification and the appended claims, the singular forms "a", "and", "said", and "the" include plural references unless the context clearly dictates otherwise. Further, note that the claims may be written to exclude any alternative elements. This description is thus intended to serve as a precedent for the use of exclusive terms such as "solely", "only", etc. in connection with the recitation of claim elements, or the use of "negative" limitations. Unless otherwise defined herein, as used in this specification All technical and chemical terms used herein have the same meaning as commonly understood by those skilled in the art to which the present invention pertains. The scope of the present application is limited by the specification of the subject matter and not by the mere meaning of the claimed terms employed.

Claims

1. An electrosurgical device, comprising a housing having a proximal end and a distal end, an electrosurgical electrode extending distally from the distal end of the housing, a plurality of light sources in the housing, the plurality of light sources being configured to generate light, and an optical lens assembly having a proximal end and a distal end, wherein the optical lens assembly includes a plurality of optical components that are (i) coupled to each other at the distal end of the optical lens assembly and (ii) spaced apart from each other at the proximal end of the optical lens assembly, each optical component being optically coupled to a respective one of the plurality of light sources, each optical component having a proximal reflecting surface extending distally from the respective light source optically coupled to the optical component, the proximal reflecting surface being configured to reflect light emitted by the respective light source toward the distal end, and the proximal reflecting surface having an aspherical shape configured to substantially collimate the light reflected by the proximal reflecting surface, and a distal transmitting surface at the distal end of the optical lens assembly, the distal transmitting surface being configured to output the light from the optical components in the distal direction. An electrosurgical device comprising the above.

2. The electrosurgical device according to claim 1, wherein the proximal reflecting surface includes an internal total reflection (TIR) reflector.

3. The electrosurgical device according to claim 2, wherein the proximal reflecting surface and the housing are spaced apart from each other such that a void surrounds the proximal reflecting surface.

4. The electrosurgical device according to any one of claims 1 to 3, wherein at the proximal end of the optical lens assembly, each optical component defines a cavity in which each of the plurality of light sources is disposed such that the plurality of light sources are distal to the most proximal surface of the optical lens assembly.

5. The electrosurgical device according to claim 4, wherein each optical component is spaced apart from the respective light source optically coupled to the optical component by a void.

6. The electrosurgical electrode has a longitudinal axis extending between a proximal end of the electrosurgical electrode and a distal end of the electrosurgical electrode, and the plurality of light sources are circumferentially disposed around the longitudinal axis of the electrosurgical electrode. ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ The electrosurgical device according to any one of claims 1 to 5.

7. The electrosurgical device according to claim 6, wherein the plurality of light sources are composed of three light sources arranged at equal intervals around the longitudinal axis of the electrosurgical electrode.

8. The electrosurgical device according to claim 6, wherein the optical lens assembly defines an opening having a central axis that is collinear with the longitudinal axis of the electrosurgical electrode.

9. The electrosurgical device according to any one of claims 1 to 8, wherein each distal transmission surface is an aspherical lens.

10. The electrosurgical device according to any one of claims 1 to 8, wherein each distal transmission surface is a Fresnel lens.

11. The Fresnel lens has a flat surface at the distal end, the flat surfaces at the distal end define a plurality of concentric rings, each ring has its own optical characteristics, the optical characteristics of the plurality of rings are different from each other such that the flat surface at the distal end transmits light in a form approximating an aspherical lens, The electrosurgical device according to claim 10.

12. The electrosurgical device according to claim 11, wherein the flat surface at the distal end includes a plurality of lenslets.

13. The optical lens assembly includes an inner surface and an outer surface, the inner surface defines a through-hole, between the proximal reflecting surface and the distal transmission surface, the cross-section of the optical lens assembly has a non-circular shape on the inner surface and a circular shape on the outer surface, The electrosurgical device according to any one of claims 1 to 12.

14. The electrosurgical device according to claim 13, wherein the non-circular shape is an ellipse.

15. Less than about 10% of the light from one of the plurality of optical components passes through an adjacent optical lens component among the plurality of optical components. The electrosurgical device according to any one of claims 1 to 14.

16. A part of the light emitted by one of the plurality of optical components overlaps with a part of the light emitted by another one of the plurality of optical components. The electrosurgical device according to claim 15.

17. The housing includes a handle having a proximal end and a distal end, and a shaft extending from the distal end of the housing, and is provided with The electric surgical electrode extends from the distal end of the shaft, and the plurality of light sources are within the shaft The electrosurgical device according to any one of claims 1 to 16. **Claim 18** The shaft includes a tube and a sleeve structure extending distally from the tube, The sleeve structure extends around the optical lens assembly, Each distal transmission surface is distal to the most distal end of the sleeve structure, according to claim 17 The electrosurgical device described. **Claim 19** The plurality of light sources include a plurality of light-emitting diodes (LEDs) coupled to a printed circuit board (PCB), The PCB includes a ring having a PCB opening, according to claim 17 The electrosurgical device described. **Claim 20** Each LED includes a die and a protective layer, according to claim 19 **Claim 21** Each LED has a diameter of about 1 millimeter (mm) to about 2 mm, according to claim 19 The electrosurgical device described. **Claim 22** Further comprising a suction tube extending through the PCB opening in the PCB and the opening in the optical lens assembly, The plurality of light sources are disposed around the suction tube, The distal end of the optical lens assembly extends around the suction tube, according to claim 19 The electrosurgical device described. **Claim 23** In a plane distal to the distal end of the electric surgical electrode, the light emitted by the optical lens assembly has a substantially uniform light intensity at each point in space, according to claim 1 - The electrosurgical device according to any one of claims 22. **Claim 24** The light emitted by the optical lens assembly defines a light pattern in the plane distal to the distal end, The intensity of the light at the weakest part of the light pattern is at least 50 percent of the intensity of the light at the strongest part of the light pattern, according to claim 23 The electrosurgical device described. **Claim 25** A housing having a proximal end and a distal end, An electric surgical electrode extending distally from the distal end of the housing, A plurality of light sources in the housing, the plurality of light sources being configured to generate light, An optical lens assembly having a proximal end and a distal end, Comprising, The optical lens assembly is (i) coupled to each other at the distal end of the optical lens assembly, and (ii) separated from each other at the proximal end of the optical lens assembly ​ ​ ​ ​ ​ ​ comprising a plurality of optical components, each optical component being optically coupled to a respective one of the plurality of light sources, each optical component comprising (a) a proximal reflecting surface extending distally from a respective one of the light sources optically coupled to the optical component, the proximal reflecting surface being configured to reflect light emitted by the respective light source toward the distal end, the proximal reflecting surface having an aspherical shape configured to substantially collimate the light reflected by the proximal reflecting surface, a proximal reflecting surface, and (b) a distal transmissive surface at the distal end of the optical lens assembly, the distal transmissive surface being configured to output the light from the optical component in the distal direction, a distal transmissive surface, A method of using an electrosurgical device comprising: providing the electrosurgical device; emitting light by the plurality of light sources; after emitting the light, reflecting the light toward the distal end in a substantially collimated state by the proximal reflecting surface of the optical component, and outputting the light in the distal direction by the distal transmissive surface of the optical component, thereby transmitting the light through each optical component, Including, Method.

26. The method according to claim 25, further comprising supplying electrosurgical energy to the electrosurgical electrode. Method described in the load.

27. The method according to claim 26, wherein supplying electrosurgical energy to the electrosurgical electrode is performed while emitting the light. Method described in the load.

28. The proximal reflecting surface includes an internal total reflection (TIR) reflector, reflecting the light by the proximal reflecting surface includes reflecting the light by internal total reflection, The method according to any one of claims 25 to 27.

29. At the proximal end of the optical lens assembly, each optical component defines a cavity in which the plurality of light sources are arranged such that each of the plurality of light sources is distal to the most proximal surface of the optical lens assembly, emitting the light includes emitting light from the plurality of light sources at a location distal to the most proximal surface of the optical lens assembly, The method according to any one of claims 25 to 28.

30. emitting the light includes emitting the light from the plurality of light sources across a gap to the proximal reflecting surface, The method according to claim 29.

30. emitting the light includes emitting the light from the plurality of light sources across a gap to the proximal reflecting surface, The method according to claim 29.

31. Said emitting of the light includes emitting the light from said plurality of light sources placed at equal intervals around the longitudinal axis of said electrosurgical electrode, The method according to any one of claims 25 to 30.

32. Said outputting of the light in the distal direction by said distal transmission surface includes transmitting the light through the aspherical lens of each distal transmission surface, The method according to any one of claims 25 to 31.

33. Said outputting of the light in the distal direction by said distal transmission surface includes transmitting the light through the Fresnel lens of each distal transmission surface, The method according to any one of claims 25 to 31.

34. Said plurality of light sources includes a plurality of light emitting diodes (LEDs) coupled to a printed circuit board (PCB), Said PCB includes a ring having a PCB opening, and said electrosurgical device includes a suction tube extending through said PCB opening in said PCB and an opening in said electro - optical lens assembly, Said plurality of light sources are arranged around said suction tube, The distal end of said optical lens assembly extends around said suction tube, The method according to any one of claims 25 to 33, further including applying a suction force to said suction tube.

35. Said outputting of the light is such that, in a plane on the distal side of the distal end of said electrosurgical electrode, the light emitted by said optical lens assembly has a substantially uniform light intensity at each point in space, The method according to any one of claims 25 to 34, including outputting said light.

36. Said outputting of the light is such that, in said plane on the distal side of the distal end, the light defines a light pattern, and the intensity of the light in the weakest part of said light pattern is at least 50 percent of the intensity of the light in the strongest part of said light pattern, The method according to claim 35, including outputting said light as described above. ​

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