JP4943039B2 - Electrosurgical pencil with improved ES control - Google Patents

Description

(Citation of related application)
This application claims the benefit and priority of US Application No. 11 / 337,990, filed January 24, 2006. This US application is a continuation-in-part of US application Ser. No. 11 / 198,473, filed Aug. 5, 2005, and claims its benefit and priority. This US application is the benefit and priority of US Provisional Application No. 60 / 666,828 filed on March 31, 2005 and US Application No. 10 / 959,824 filed on October 6, 2004. Insist. US Application No. 10 / 959,824 filed on October 6, 2004 is the same as US Application No. 10 / 718,113 and International Application No. PCT / US03 / 37111 filed on November 20, 2003, respectively. Claim each interest and priority. The entire contents of each of the above are hereby incorporated by reference.

(background)
(Technical field)
The present disclosure relates generally to electrosurgical instruments and, more particularly, to electrosurgical pencils having a plurality of hand-accessible variable controllers.

(Background of related fields)
Electrosurgical instruments have become widely used by surgeons in recent years. Thus, a need has arisen for equipment and instruments that are easy to handle, reliable, and safe in the operating environment. In general, most electrosurgical instruments are hand instruments (eg, electrosurgical pencils) that transmit radio frequency (RF) electrical energy or electrosurgical energy to tissue. The electrosurgical energy is returned to the electrosurgical source through a return electrode pad located under the patient (ie, a monopolar system configuration), or in contact with the body or immediately adjacent to the surgical site Is returned to this electrosurgical source via a smaller return electrode that can be positioned adjacent to (ie, a bipolar system configuration). The waveform produced by this RF source produces a predetermined electrosurgical effect, commonly known as electrosurgical cutting and radiofrequency therapy.

  Specifically, electrosurgical radiofrequency therapy involves the application of electrical sparks to biological tissue (eg, human meat or internal organ tissue) without major cuts. This spark is generated by radio frequency electrical energy or a burst of electrosurgical energy generated from a suitable electrosurgical generator. Coagulation is defined as the process of desiccating tissue, where tissue cells are destroyed and dehydrated / dry. On the other hand, electrosurgical cutting / dissection involves applying an electric spark to tissue for the purpose of producing a cutting effect, an incising effect and / or a splitting effect. Fusion includes a cutting / dissecting function combined with the generation of a hemostatic effect. On the other hand, sealing / hemostasis is defined as the process of liquefying the collagen in the tissue so that the liquefied collagen forms a fused mass.

  As used herein, the term “electrosurgical pencil” refers to an instrument having a handpiece attached to an active electrode and used to cauterize, coagulate, and / or cut tissue. It is intended to include. Typically, electrosurgical pencils can be actuated by hand switches or foot switches. The active electrode is an electrically conductive element, which is usually elongated and may be in the form of a thin flat blade with a pointed or rounded distal end. Alternatively, the active electrode may comprise an elongate thin cylindrical needle that is solid or hollow, the needle having a flat, rounded, pointed or inclined distal end. Typically, this type of electrode is known in the art as a “blade”, “loop” or “snare”, “needle” or “ball” electrode.

  As described above, the electrosurgical pencil handpiece is connected to a suitable electrosurgical energy source (ie, a generator) that produces the high frequency electrical energy required for operation of the electrosurgical pencil. In general, when surgery is performed on a patient using an electrosurgical pencil, electrical energy from the electrosurgical generator is conducted through the active electrode to the tissue at the surgical site and then through the patient. And is conducted to the return electrode. The return electrode is typically placed at a convenient location on the patient's body and attached to the generator by a conductive material. Typically, the surgeon operates the electrosurgical pencil controller to select a mode / waveform to achieve the desired surgical effect. “Modes” are typically associated with various electrical waveforms. For example, the cutting waveform has a tendency to cut tissue, the coagulation waveform has a tendency to coagulate tissue, and the fusion waveform has any tendency between the cutting waveform and the coagulation waveform. Power or energy parameters are typically controlled from outside the sterile field, which requires an intermediary, such as a visiting nurse to make such adjustments.

  A typical electrosurgical generator has a number of controllers for selecting the electrosurgical output. For example, the surgeon may select various surgical “modes” (cutting, fusion (fusion levels 1-3), shallow cutting, drying, radiofrequency therapy, nebulization, etc.) to treat the tissue. The surgeon also has the option of selecting a range of power settings (typically 1 W to 300 W). As can be appreciated, this gives the surgeon a great variety when treating tissue. However, many such options also tend to complicate and be confusing simple surgical procedures. In addition, the surgeon typically follows preset control parameters and stays within known modes and power settings. Thus, allowing the surgeon to selectively control and easily select and adjust the various modes and power settings using the simple and ergonomic friendly controller associated with the electrosurgical pencil It is necessary to.

  Existing electrosurgical instrument systems allow a surgeon to change two preconfigured settings (ie, coagulation and cutting) via two separate switches located on the electrosurgical pencil itself. . Other electrosurgical instrument systems allow the surgeon to increase the power applied by adjusting or closing the electrosurgical generator switch when the coagulation switch or disconnect switch of the instrument is depressed. Enable. The surgeon then needs to visually verify changes in the applied power by looking at various displays and / or instruments on the electrosurgical generator. In other words, all of the parameters monitored during adjustment and use of the electrosurgical instrument are typically present on the electrosurgical generator. Therefore, the surgeon must continuously monitor the electrosurgical generator during the surgical procedure.

  Recently, electrosurgical instrument systems are increasingly equipped with a coupling system and / or a connection system (eg, a plug) for removably connecting the electrosurgical instrument to an electrosurgical generator. Typically, the electrosurgical instrument includes a so-called “male” connector, while the electrosurgical generator includes a corresponding “female” connector.

  Since electrosurgery requires the application of controlled radio frequency energy to the tissue site to be operated on, an appropriate electrosurgical generator for a particular electrosurgical procedure can be accurately and appropriately applied to the electrosurgical instrument. It is important that they are mated. Due to the various electrosurgical procedures of the surgery (which require the delivery of various levels of radio frequency energy from the attached instrument), problems with electrosurgical instruments and electrosurgical generator incompatibility arise.

  Thus, there is a need for an electrosurgical instrument that does not require the surgeon to continuously monitor the electrosurgical generator during the surgical procedure. Furthermore, there is a need for an electrosurgical instrument that can be configured such that the power output can be adjusted without the surgeon having to divert the line of sight from the surgical site and direct it to the electrosurgical generator.

  Furthermore, there is a need for a connection system for electrosurgical generators that allows various electrosurgical instruments to be selectively connected to corresponding electrosurgical generators.

(Summary)
The present disclosure relates to an electrosurgical pencil having a plurality of hand-accessible variable controllers.

  According to one aspect of the present disclosure, an electrosurgical pencil comprising an elongated housing is provided. At least one electrocautery end effector is removably supported within the housing and extends distally from the housing. The electrocautery end effector is connected to a source of electrosurgical energy and the selector selects the range of energy delivered from the source of electrosurgical energy to at least one electrocautery end effector To be supported on this housing. In use, the sorter is operable to select a range setting corresponding to a particular electrocautery end effector connected to the housing.

  The sorter may be at least one of a button that is pressably supported on the housing, or a collet that is rotatably supported on the housing. The range setting can be selected by at least one of pressing this button and rotating the collet.

  The electrosurgical pencil may further comprise a plurality of actuation switches supported on the housing. Each activation switch may be configured and adapted to selectively complete a control loop extending from a source of electrosurgical energy upon activation of these activation switches. In use, actuation of at least one of the plurality of actuation switches results in tissue division with a hemostatic effect in the electrocautery blade.

  The electrosurgical pencil may further comprise at least one voltage divider network supported on the housing. The at least one voltage divider network is electrically connected to the source of electrosurgical energy and the intensity of electrosurgical energy delivered to the electrosurgical pencil and the electrosurgical energy delivered to the electrosurgical pencil Control at least one of the modes.

  Splits with hemostatic effects are transmitted as discrete packets of energy. The energy packet has substantially immediate amplification and / or substantially immediate attenuation.

  The housing defines an open distal end for selectively receiving a proximal end of the electrosurgical blade therein. The open distal end of the housing may have a non-circular inner profile. The electrosurgical pencil may further comprise a collar that operably supports the electrocautery blade. The collar has a shaped outer surface that is complementary to the shaped inner profile of the distal open end of the housing. The inner profile of the collar and the distal open end of the housing may have a complementary oval, triangular, rectangular, hexagonal, toothed, polyhedral profile.

  The electrosurgical pencil may further comprise a blade receptacle, which is configured and adapted to selectively engage the proximal end of the electrocautery blade.

  The electrosurgical pencil may further comprise a stabilizer, the stabilizer being operably disposed within the housing and for increasing the retention force acting on the proximal end of the electrocautery blade. The stabilizer defines a passage configured therein, the passage being configured and adapted to selectively receive the proximal end of the electrocautery blade. The stabilizer can be made from a flexible polymer material.

  At least one voltage divider network may be electrically connected to a source of electrosurgical energy that controls the intensity of electrosurgical energy delivered from the source of electrosurgical energy to a plurality of activation switches. And for controlling the strength of the intensity of electrosurgical energy delivered from the electrocautery electrode back to the plurality of actuation switches. The voltage divider network may include at least one return control wire that electrically interconnects the electrocautery electrode and the source of electrosurgical energy. The return control wire transmits excess electrosurgical energy from the electrocautery electrode to a source of electrosurgical energy.

  The voltage network divider includes a sliding line potentiometer operatively associated with the housing. A plurality of actuation switches may define a first resistance network disposed within the housing. The slip line potentiometer defines a second resistance network disposed within the housing. This sliding line potentiometer simultaneously controls the intensity of electrosurgical energy delivered to multiple actuation switches.

  It is contemplated that the at least one actuation switch is configured and adapted to control the waveform duty cycle to achieve the desired surgical purpose. The electrosurgical pencil may include three mode activation switches supported on the housing. Thus, each mode activation switch can generate a characteristic voltage that is measured by a source of electrosurgical energy, which in turn can generate a corresponding waveform duty cycle, an electrosurgical pencil. To communicate.

  The first activation switch, when activated, can generate a first characteristic voltage that is measured by the source of electrosurgical energy, which in turn has a cutting effect. The resulting waveform duty cycle can be communicated. The second activation switch, when activated, can generate a second characteristic voltage that is measured by the source of electrosurgical energy, which in turn has a hemostatic effect. The waveform duty cycle that causes the split may be transmitted. The third actuation switch, when activated, can generate a third characteristic voltage that is measured by the source of electrosurgical energy, which in turn produces a coagulation effect. A waveform duty cycle may be transmitted.

  The voltage divider network is preferably a potentiometer.

  The electrosurgical pencil further comprises a molded hand grip operably supported on the housing. The hand grip is shaped and dimensioned to reduce fatigue on the user's hand.

  The electrosurgical pencil further comprises a mark provided on the housing. This mark indicates to the user the level of energy intensity being delivered to the electrocautery blade. This mark is typically located along the moving path of the slip line potentiometer.

  In one embodiment, it is contemplated that the sorter is an optical fiber with a distal end supported within the housing, which optical fiber is connected to the housing when the electrocautery end effector is connected to the housing. It is for reading the intensity of light from the proximal end of the cautery end effector.

  It is contemplated that the proximal end of each electrocautery end effector has an associated unique color, where each color produces a different light intensity. Thus, when the electrical illumination end effector is connected to the housing, the optical fiber transmits this light intensity to the electrosurgical generator. The electrosurgical generator then adjusts the range setting based on the light intensity transmitted thereto.

  According to another aspect of the present disclosure, an electrosurgical system is provided. The electrosurgical system includes an electrosurgical generator; and an electrosurgical pencil that is selectively connectable to the electrosurgical generator. The electrosurgical pencil is an elongated housing; at least one electrocautery end effector that is removably supportable within the housing, extends distally from the housing, and An electrocautery end effector connected to the electrosurgical generator; and at least one voltage divider network supported on the housing. The at least one voltage divider network is electrically connected to the electrosurgical generator and the intensity of electrosurgical energy delivered to the electrosurgical pencil and the mode of electrosurgical energy delivered to the electrosurgical pencil At least one of them is controlled. This voltage divider network generates a plurality of characteristic voltages. These voltages are measured by the electrosurgical generator, which then transmits a corresponding waveform duty cycle of a particular intensity to the electrosurgical pencil electrocautery end effector.

  The voltage divider network may generate a first characteristic voltage, a second characteristic voltage, and a third characteristic voltage. When the first characteristic voltage is measured by the electrosurgical generator, it causes the electrosurgical generator to transmit a waveform duty cycle that produces a cutting effect; the second characteristic voltage is the electrosurgical generator The electrosurgical generator transmits a waveform duty cycle that causes a split with a hemostatic effect; a third characteristic voltage is measured by the electrosurgical generator The machine is transmitted a waveform duty cycle that produces a coagulation effect.

  The voltage divider network may generate a series of characteristic voltages that, when measured by the electrosurgical generator, provide the electrosurgical generator with a specific waveform duty at a corresponding level of intensity. Communicate the cycle.

  The electrosurgical pencil can include a plurality of activation buttons supported on the housing. Each activation button may be operatively associated with this voltage divider network. Each activation button may be operable to cause the voltage divider network to generate a respective one of the characteristic voltages for transmission of the corresponding waveform duty cycle.

  The electrosurgical pencil can include an intensity controller supported on the housing. The intensity controller may be operatively associated with the voltage divider network. The intensity controller may be operable to cause the voltage divider network to generate each of a series of characteristic voltages for transmission of a corresponding intensity level waveform duty cycle. In one embodiment, the intensity controller is slidably supported within the electrosurgical pencil housing.

  The segment having a hemostatic effect has a waveform having a duty cycle of about 12% to about 75%, the coagulation effect has a waveform having a duty cycle of about 1% to about 12%; and the cutting It is contemplated that the effect has a waveform having a duty cycle of about 75% to about 100%.

  The voltage divider network may be a film type potentiometer. This voltage divider network may comprise a pair of layers, each layer supporting a plurality of electrical contacts thereon. It is contemplated that electrical contacts from the upper layer of the voltage divider network are in juxtaposed electrical relationship with electrical contacts from the lower layer of the voltage divider network. The voltage divider network may comprise a dividing layer interposed between these upper and lower layers. The split layer may comprise a first series of openings formed therein, the openings being vertically aligned with the upper and lower electrical contacts. The split layer may comprise a second opening formed therein, the opening being between an electrical contact provided on the upper layer and a variable resistance element provided on the lower layer, Aligned vertically.

  According to a further aspect of the present disclosure, an electrosurgical instrument is provided, the electrosurgical instrument being an elongated housing; at least one electrocautery end effector, wherein the electrocautery end effector is removed within the housing. An electrocautery end effector capable of being supported and extending distally from the housing and connectable to an electrosurgical generator; and at least one voltage divider network supported on the housing; The at least one voltage divider network is electrically connectable to the electrosurgical generator and the intensity of electrosurgical energy delivered to the electrosurgical instrument and the electrosurgical delivered to the electrosurgical instrument A voltage divider network that can control at least one of the modes of energy That. The voltage divider network generates a plurality of characteristic voltages that can be measured by an electrosurgical generator, which in turn has a corresponding intensity and a corresponding waveform. Is transmitted to the electrocautery end effector of the electrosurgical instrument.

  The voltage divider network may generate a first characteristic voltage, a second characteristic voltage, and a third characteristic voltage. When the first characteristic voltage is measured by the electrosurgical generator, it causes the electrosurgical generator to transmit a waveform duty cycle that produces a cutting effect; the second characteristic voltage is the electrosurgical generator The electrosurgical generator transmits a waveform duty cycle that causes a split with a hemostatic effect; a third characteristic voltage is measured by the electrosurgical generator The machine is transmitted a waveform duty cycle that produces a coagulation effect.

  The voltage divider network may generate a series of characteristic voltages that, when measured by the electrosurgical generator, cause the electrosurgical generator to have a specific waveform duty cycle at a corresponding intensity level. To communicate.

  The electrosurgical instrument may include a plurality of activation buttons supported on the housing, wherein each activation button is operatively associated with the voltage divider network.

  Each activation button is operable to cause the voltage divider network to generate each of the characteristic voltages for transmission of the corresponding waveform duty cycle.

  The electrosurgical instrument may include an intensity controller supported on the housing, wherein the intensity controller is operatively associated with the voltage divider network. The intensity controller may be operable to cause the voltage divider network to generate each of a series of characteristic voltages for transmission of a corresponding intensity level waveform duty cycle. The intensity controller may be slidably supported within the electrosurgical instrument housing.

  The segment having a hemostatic effect has a waveform having a duty cycle of about 12% to about 75%, the coagulation effect has a waveform having a duty cycle of about 1% to about 12%; and the cutting It is contemplated that the effect has a waveform having a duty cycle of about 75% to about 100%.

The present invention provides the following:
(Item 1)
An electrosurgical instrument that:
Elongated housing;
At least one electrocautery end effector that is rotatably supportable within the housing and extends distally from the housing, the electrocautery end effector being connectable to an electrosurgical generator. An electrocautery end effector; and at least one voltage divider network supported on the housing, the at least one voltage divider network being electrically connectable to an electrosurgical generator, at least of these A voltage divider network that can control at least one of the intensity of electrosurgical energy delivered to the electrosurgical pencil and the mode of electrical energy delivered to the electrosurgical instrument;
Comprising:
These voltage divider networks generate a number of characteristic voltages that can be measured by an electrosurgical generator, which in turn has a corresponding waveform duty cycle. An electrosurgical instrument that transmits to an electrocautery end effector of the electrosurgical instrument with a certain strength.

(Item 2)
The at least one voltage divider network is the following:
A first characteristic voltage that, when measured by the electrosurgical generator, causes the electrosurgical generator to transmit a waveform duty cycle that produces a cutting effect;
A second characteristic voltage, which when measured by an electrosurgical generator, causes the electrosurgical generator to transmit a waveform duty cycle that causes a split with a hemostatic effect. And a third characteristic voltage that, when measured by the electrosurgical generator, causes the electrosurgical generator to transmit a waveform duty cycle that produces a coagulation effect;
The electrosurgical instrument according to item 1, wherein

(Item 3)
The electrical of item 1, wherein when the plurality of characteristic voltages are measured by the electrosurgical generator, the electrosurgical generator transmits the duty cycle of the specific waveform at a corresponding level of intensity. Surgical instruments.

(Item 4)
The electrosurgical instrument according to item 1, further comprising a plurality of activation buttons supported on the housing, each activation button operatively associated with the voltage divider network.

(Item 5)
5. The electrosurgical device of item 4, wherein each activation button is operable to generate a respective one of the characteristic voltages for transmission of a corresponding waveform duty cycle to the at least one voltage divider network. Instruments.

(Item 6)
The electrosurgical instrument of item 1, further comprising an intensity controller supported within the housing, wherein the intensity controller is operatively associated with the at least one voltage divider network.

(Item 7)
The intensity controller is operable to cause the at least one voltage divider network to generate each one of a plurality of characteristic voltages for transmission of a duty cycle of the corresponding intensity level waveform; 7. The electrosurgical instrument according to item 6, which is possible.

(Item 8)
The electrosurgical instrument according to item 6, wherein the strength controller is slidably supported within a housing of the electrosurgical instrument.

(Item 9)
The segment having hemostatic effect has a waveform having a duty cycle of about 12% to about 75%, the coagulation effect has a waveform having a duty cycle of about 1% to about 12%; and the cutting The electrosurgical instrument according to item 2, wherein the effect has a waveform having a duty cycle of about 75% to about 100%.

(Item 10)
The electrosurgical instrument of item 1, wherein the at least one voltage divider network is a film-type potentiometer.

(Item 11)
The at least one voltage divider network comprises a pair of layers and supports a plurality of electrical contacts on each of these layers, the electrical contacts from the upper layers of these at least one voltage divider network being these The electrosurgical instrument of item 1, wherein the electrosurgical instrument is in an electrical relationship juxtaposed to electrical contacts from an underlayer of the at least one voltage divider network.

(Item 12)
The at least one voltage divider network comprises a dividing layer interposed between the upper layer and the lower layer, the dividing layer comprising at least one opening formed therein, the opening being in the upper layer 12. The electrosurgical instrument of item 11, wherein the electrosurgical instrument is vertically aligned with the electrical contact between the and the underlayer.

(Item 13)
The split layer includes a second opening formed therein, the second opening being between an electrical contact provided on the upper layer and a variable resistance element provided on the lower layer. The electrosurgical instrument of item 12, wherein the electrosurgical instrument is vertically aligned at.

(Item 14)
An electrosurgical system that:
An electrosurgical generator; and an electrosurgical pencil selectively connectable to the electrosurgical generator, the electrosurgical pencil comprising:
An elongated housing; and at least one electrocautery end effector rotatably supported within the housing and extending distally from the housing, the electrocautery end effector connected to an electrosurgical generator An electrosurgical end effector;
An electrosurgical pencil; and at least one voltage divider network that is electrically connected to the electrosurgical generator and delivered to the electrosurgical pencil, and the electric delivered to the electrosurgical pencil A voltage divider network that controls at least one of the modes of surgical energy;
Comprising:
These at least one voltage divider network generates a plurality of characteristic voltages that can be measured by an electrosurgical generator, which in turn has a corresponding waveform. An electrosurgical system that delivers a duty cycle to an electrocautery end effector of an electrosurgical pencil at a particular strength.

(Item 15)
The at least one voltage divider network is the following:
A first characteristic voltage that, when measured by the electrosurgical generator, causes the electrosurgical generator to transmit a waveform duty cycle that produces a cutting effect;
A second characteristic voltage, which when measured by an electrosurgical generator, causes the electrosurgical generator to transmit a waveform duty cycle that causes a split with a hemostatic effect. And a third characteristic voltage that, when measured by the electrosurgical generator, causes the electrosurgical generator to transmit a waveform duty cycle that produces a coagulation effect;
15. The electrosurgical system according to item 14, wherein

(Item 16)
Item 15. The item of claim 14, wherein when the plurality of characteristic voltages are measured by the electrosurgical generator, the electrosurgical generator transmits the duty cycle of the particular waveform at a corresponding level of intensity. Electrosurgical system.

(Item 17)
The electrosurgical system according to item 14, wherein the electrosurgical pencil further comprises a plurality of actuation buttons supported on the housing, each actuation button being operatively associated with the voltage divider network.

(Item 18)
The electrosurgical device of item 17, wherein each activation button is operable to generate a respective one of a characteristic voltage for transmission of a corresponding waveform duty cycle to the at least one voltage divider network. system.

(Item 19)
The electrosurgical system according to item 14, wherein the electrosurgical pencil further comprises an intensity controller supported within the housing, the intensity controller being operatively associated with the at least one voltage divider network. .

(Item 20)
The intensity controller is operable to cause the at least one voltage divider network to generate each one of a series of characteristic voltages for transmission of a duty cycle of the corresponding intensity level waveform; An electrosurgical system according to item 19, which is possible.

(Item 21)
21. The electrosurgical system of item 20, wherein the strength controller is slidably supported within the electrosurgical pencil housing.

(Item 22)
The segment having hemostatic effect has a waveform having a duty cycle of about 12% to about 75%, the coagulation effect has a waveform having a duty cycle of about 1% to about 12%; and the cutting The electrosurgical system according to item 15, wherein the effect has a waveform having a duty cycle of about 75% to about 100%.

  An electrosurgical instrument is provided, wherein the electrosurgical instrument is an elongated housing; at least one electrocautery end effector that is rotatably supportable within the housing and extends distally from the housing, An electrocautery end effector connectable to a surgical generator; and at least one voltage divider network supported on the housing. The at least one voltage divider network is electrically connectable to the electrosurgical generator and controls the intensity of electrosurgical energy delivered to the electrosurgical pencil and / or the mode of electrosurgical energy delivered to the electrosurgical instrument. It can be controlled. The voltage divider network generates a plurality of informative voltages that can be measured by the electrosurgical generator, which in turn has a corresponding waveform duty cycle. , With a certain strength, transmitted to the electrocautery end effector of this electrosurgical instrument.

  The present invention provides an electrosurgical instrument that does not require the surgeon to continuously monitor the electrosurgical generator during the surgical procedure. Furthermore, the present invention provides an electrosurgical instrument that can be configured such that the power output can be adjusted without the surgeon having to divert the line of sight from the surgical site and direct it to the electrosurgical generator.

  Furthermore, the present invention provides a connection system for electrosurgical generators that allows various electrosurgical instruments to be selectively connected to corresponding electrosurgical generators.

  The accompanying drawings, which are incorporated in and constitute a part of this specification, illustrate embodiments of the invention, and provide a general description of the invention given above and a detailed description of the embodiments. Together with the explanation of the principles of the invention.

(Detailed explanation)
Preferred embodiments of the electrosurgical pencil disclosed herein will now be described in detail with reference to the drawings. In the drawings, like reference numbers identify similar or identical elements. As used herein, the term “distal” refers to the portion away from the user, while the term “proximal” refers to the portion closer to the user or surgeon.

  FIG. 1 shows a perspective view of an electrosurgical system comprising an electrosurgical pencil 100 configured in accordance with one embodiment of the present disclosure. While the following description relates to an electrosurgical pencil, the features and spirit (or portions thereof) of the present disclosure are not limited to any electrosurgical instrument (eg, forceps, suction coagulator, vascular sealer). It is envisaged that it can be applied to (sealer), wand, etc.).

  As can be seen from FIGS. 1-7, the electrosurgical pencil 100 includes an elongated housing 102 having an upper half shell portion 102a and a lower half shell portion 102b. Desirably, the housing 102 is not divided along a longitudinal centerline. As can be seen from FIGS. 8 and 9, the lower half shell portion 102b comprises a distal opening 103a and a proximal opening 103b, through which the blade 106 extends, A connecting wire 224 extends through the opening 103b (see FIG. 1). Desirably, the upper half shell portion 102a and the lower half shell portion 102b may be joined together by methods known to those skilled in the art (eg, sonic energy, adhesives, snap fit assemblies, etc.).

  The electrosurgical pencil 100 further comprises a blade receptacle 104 disposed at the distal end of the housing 102 and a replaceable electrocautery end effector 106 operably and removably connectable to the blade receptacle 104. The electrocautery end effector 106 may be in the form of a needle, loop, blade and / or wand. The distal end portion 108 of the blade 106 extends distally beyond the receptacle 104, while the proximal end portion 110 of the blade 106 is selectively held by the receptacle 104 within the distal end of the housing 102. It is contemplated that the electrocautery blade 106 is manufactured from a conductive material (eg, stainless steel, etc.) or coated with a conductive material. The blade receptacle 104 is preferably manufactured from a conductive material. The blade receptacle 104 is electrically connected to the voltage divider network 127 as described in more detail below (FIGS. 8, 9, and 25).

  Desirably, as shown in FIG. 1, electrosurgical pencil 100 may be connected through plug assembly 200 to a conventional electrosurgical generator “G” as described in greater detail below (FIGS. 16-21). checking).

  For purposes herein, the term “switch” refers to an electrical actuator, mechanical actuator, electro-mechanical actuator (rotary actuator, pivot actuator, toggle-like actuator, button, etc.) or optical. Includes actuators.

  With reference to FIGS. 1-7 and 9, the electrosurgical pencil 100 comprises at least one activation switch (preferably three activation switches 120a-120c), each of which is a shell portion of the upper half of the housing 102 Extends through 102a. Each activation switch 120a-120c is operably supported on a respective haptic element (shown here as a snap-dome switch) 122a-122c provided on the switch plate 124. Each activation switch 120 a-120 c controls the transmission of RF electrical energy supplied from the generator “G” to the electrosurgical blade 106. More particularly, the switch plate 124 is disposed over the voltage divider network 127 (hereinafter “VDN 127”) so that the haptic elements 122a-122c are operatively associated therewith. . Desirably, VDN 127 (eg, shown here as a film potentiometer) forms a switch closure. For the purposes herein, the term “voltage divider network” refers to any known voltage that determines the output voltage across a series-connected voltage source (eg, one of two impedances). In the form of resistive, capacitive or dielectric switch closures. As used herein, a “voltage divider” refers to a number of resistors connected in series that have taps at specific points and can utilize a fixed or variable rate of applied voltage.

  In use, depending on which activation switch 120a-120c is depressed, the respective haptic element 122a-122c is pushed into contact with the VDN 127, and the electrosurgical generator via the control wire or electric wire 216 A signal characteristic of “G” is transmitted (see FIGS. 17 to 20). Desirably, three control wires 216a-216c (one for each activation switch 120a-120c, respectively) are provided. The control wires 216a-216c are preferably electrically connected to the switches 120a-120c via the controller terminal 215 (see FIGS. 9, 11, 12, 14, 21 and 22). . Controller terminal 215 is operatively connected to VDN 127. Merely by way of example, an electrosurgical generator “G” may be used with the device, where generator “G” comprises circuitry that interprets and responds to VDN settings.

  Activation switches 120a-120c are configured and adapted to control the mode and / or “waveform duty cycle” to achieve the desired surgical intent. For example, the first activation switch 120a may be set to transmit a characteristic signal to the electrosurgical generator “G”, which then transmits the duty cycle and / or waveform shape; This produces the effect / function of cutting and / or incision. On the other hand, the second activation switch 120b may be set to transmit a characteristic signal to the electrosurgical generator “G”, which then transmits the duty cycle and / or waveform shape; This results in a split with a hemostatic effect / function. Finally, the third activation switch 120c can be set to transmit a characteristic signal to the electrosurgical generator “G”, which then transmits the duty cycle and / or waveform shape. Thus, a hemostatic effect / function is produced.

  As can be seen from FIGS. 17-20, a fourth wire or RF line 216d is preferably provided for transmitting RF energy to the electrocautery blade 106, and the fourth wire or RF line 216d is provided by the electric cautery blade. Directly electrically connected to the blade receptacle 104 for connection to the proximal end 110 of 106. Since RF line 216d is directly connected to blade receptacle 104, RF line 216d bypasses VDN 127 and is isolated from VDN 127 and control wires 216a-216c. By connecting RF line 216d directly to blade receptacle 104 to isolate VDN 127 from RF energy transmission, electrosurgical current does not flow through VDN 127. This in turn extends the life and lifetime of VDN 127 and / or switches 120a-120c.

  In this way, VDN 127 and / or switches 120a-120c may be selected that are less complex and / or less expensive. This is because the switch does not need to carry current during start-up. For example, if return control wire 216d is provided, switches 120a-120c can be constructed by printing conductive ink on a plastic film. On the other hand, if the return control wire 216d is not provided, the switch may be of the type made from standard stamped metal that adds to the overall complexity and cost of the instrument.

  Referring to FIG. 25, a voltage divider network (VDN) 127 is shown according to one embodiment of the present disclosure. The VDN 127 comprises: a first transmission line 127a that operates various modes of the electrosurgical pencil 100; a second transmission line 127b that operates various strengths of the electrosurgical pencil 100; a third transmission that functions as the base of the VDN 127. Line 127c; and a fourth transmission line 127d capable of transmitting up to about +5 volts to VDN 127.

  As can be seen in FIG. 25, the RF line 216d is isolated from the VDN 127 or otherwise separated from the VDN 127. In particular, the RF line 216 d extends directly from the RF input or generator “G” to the RF output or electrocautery blade 106.

  As an example only, the VDN 127 includes a plurality of resistors “R1” (for example, six resistors) connected in the first column between the first transmission line 127c and the fourth transmission line 127d. obtain. The first row of resistors “R1” can be combined for a total resistance of about 1000 ohms. The first row of resistors “R1” are each substantially separated by a first set of switches “S1”. Each switch of the first set of switches “S1” may be electrically connected between the adjacent resistor “R1” and the first transmission line 127a of the VDN 127. In operation, different modes of operation are activated for the electrosurgical pencil 100 depending on which switch of the first set of switches “S1” is closed.

  Furthermore, by way of example only, VDN 127 includes a plurality of resistors “R2” (eg, four resistors) connected in a second row between first transmission line 127c and fourth transmission line 127d. Can be prepared. The second row of resistors “R2” can be combined for a total resistance of about 1000 ohms. The second row of resistors “R2” are each separated by a second set of switches “S2”. Each switch of the second set of switches “S2” may be electrically connected between the adjacent resistor “R2” and the second transmission line 127b of the VDN 127. In operation, different strengths of RF energy are transmitted by the electrosurgical pencil 100 depending on which switch of the second set of switches “S2” is closed.

  A division with hemostatic effect / function may be defined as having a waveform having a duty cycle of about 12% to about 75%. This hemostasis / coagulation effect / function may be defined as having a waveform having a duty cycle of about 1% to about 12%. This cutting and / or incision effect / function may be defined as having a waveform having a duty cycle of about 75% to about 100%. It is important to note that these percentages are approximate and can be customized to deliver the desired surgical effects for various tissue types and characteristics.

  In accordance with the present disclosure and as seen in FIG. 25A, the split in hemostatic effect / function is transmitted and / or delivered in discrete energy packets. This discontinuous energy packet includes an amplification phase or ramp-up phase and a degradation phase or ramp-down phase, which is reduced and / or eliminated. In other words, this discontinuous energy packet delivered during the transmission of the split with hemostatic effect / function includes a near instantaneous amplification of energy and a nearly instantaneous decrease in energy. In addition, the hemostatic effect / function division has a waveform with a duty cycle of about 24%. The activation switch 120b controls the hemostatic effect / function and division and acts as a closed loop control.

  As seen throughout FIGS. 1-15, the electrosurgical pencil 100 further comprises an intensity controller 128 that is slidably supported on or in the housing 102. The strength controller 128 includes a pair of protrusions 129a, 129b, which are slidably supported in the respective guide channels 130a, 130b, which are the upper half of the housing 102. The shell portion 102a is formed. Preferably, the guide channels 130a and 130b are formed on either side of the operation switches 120a to 120c. By providing protrusions 129a, 129b on either side of the activation switches 120a-120c, the intensity controller 128 can be easily operated with either one hand of the user or the same electrosurgical pencil can be Can be operated by a right-handed user or a left-handed user.

  As seen in FIGS. 21 and 14, the intensity controller 128 further comprises a protrusion 129c that extends from the bottom surface of the intensity controller, the bottom surface being in contact with the VDN 127 and Press. In this way, as the strength controller 128 is displaced distally and proximally relative to the housing 102, the third protrusion 129c moves relative to the VDN 127, as will be described in more detail below. Next, the strength setting transmitted to the electrocautery end effector 106 is changed.

  Intensity controller 128 may be configured to function as a sliding line potentiometer that slides along VDN 127 along. The strength controller 128 is in a first position (in this position, the protrusions 129a, 129b are in a most proximal position corresponding to a relatively weak strength setting (eg, closest to the plug assembly 200, first 3 projections 129c are located in the most proximal position)) and second position (in this position the projections 129a, 129b are present in the most distal position corresponding to a relatively strong strength setting) (E.g., closest to electrocautery end effector 106, third protrusion 129c is located in the most distal position), as well as a plurality of intermediate positions (in these positions, protrusions 129a, 129b are Having a position between the most distal position and the most proximal position, corresponding to various intermediate intensity settings. As can be appreciated, the strength setting from the proximal end to the distal end may be reversed from strong to weak, for example.

  The protrusions 129a, 129b and the corresponding guide channels 130a, 130b of the intensity controller 128 are provided with a series of cooperating discontinuous or detent positions that define a series of positions (eg, five) and are weak. It is contemplated that easy selection of output intensity is possible from intensity setting to strong intensity setting. This series of coordinated discontinuous or detent positions also provides some tactile feedback to the surgeon. By way of example only, as seen in FIGS. 12 and 14, a plurality of discontinuous detents 131 are defined on the inner upper surface of the upper half shell portion 102a for cooperation and selective engagement with the elastic fingers 128a. Is done. This resilient finger extends upward from the strength controller 128. Thus, in use, as the strength controller 128 slides in the distal and proximal directions, the resilient fingers 128a selectively engage the detent 131 to set the strength level and this strength control. Provide tactile feedback to the user as to whether or not the instrument is set to the desired intensity setting.

  Intensity controller 128 is configured and adapted to adjust power parameters (eg, voltage, power and / or current intensity) and / or power versus impedance curve shape to affect perceived output intensity. . For example, if the intensity controller 128 is large and displaced in the distal direction, the level of power parameter transmitted to the electrocautery blade 106 will be greater. If an electrosurgical blade is used and has a typical tissue impedance of about 2K ohms, the current strength may probably range from about 60 mA to about 240 mA. An intensity level of 60 mA provides a very light and / or minimal cutting / dissecting / hemostatic effect. The 240 mA intensity level provides a very aggressive cutting / dissecting / hemostatic effect. Accordingly, a preferred range of current intensity is about 100 mA to about 200 mA at 2K ohms.

  This intensity setting is preferably preset and selected from a look-up table based on the selection of electrosurgical instrument / fixture, desired surgical effect, surgical characteristics and / or surgeon capabilities. This selection may be performed automatically or manually by the user. This intensity value may be predetermined by the user or may be adjusted.

  During operation and depending on the specific electrosurgical function desired, the surgeon depresses one of the activation switches 120a-120c in the direction indicated by the arrow “Y” (see FIGS. 12-15). , Thereby pressing the corresponding tactile elements 122a-122c against the VDN 127 and transmitting respective characteristic signals to the electrosurgical generator “G”. For example, the surgeon may depress the activation switch 120a to perform a cutting and / or dissecting function, depress the activation switch 120b to perform a fusion function, or depress the activation switch 120c to perform a hemostatic function. . Generator “G” then transmits the appropriate waveform output to electrocautery blade 106 via RF line 216d.

  To change the strength of the power parameter of the electrosurgical pencil 100, the surgeon turns the strength controller 128 on at least one of the protrusions 129a, 129b, in the direction indicated by arrows “X” with scissors on both sides. (See FIGS. 12 and 13). As described above, the intensity can vary from about 60 mA for light effects to about 240 mA for more aggressive effects. For example, placing the protrusions 129a, 129b of the strength controller 128 near the most proximal ends of the guide channels 130a, 130b (ie, near the plug assembly 200) provides a weaker strength level, Placing the protrusions 129a, 129b of the intensity controller 128 near the distal end of the guide channels 130a, 130b (ie, near the electrocautery end effector 106) provides a stronger intensity level. When the protrusions 129a, 129b of the intensity controller 128 are located at the most proximal ends of the guide channels 130a, 130b, it is envisioned that the VDN 127 is set to a zero position and / or an open position. The electrosurgical pencil 100 may be transported with the intensity controller 128 set to the zero position and / or the open position.

  Intensity controller 128 simultaneously controls the intensity level of electrosurgical energy activated by all three activation switches 120a-120c. In other words, when the protrusions 129a, 129b of the intensity controller 128 are positioned relative to the guide channels 130a, 130b, the intensity level of electrosurgical energy transmitted to each actuation switch 120a-120c is determined by the intensity controller 128. Is set to the same value.

  As a safety measure, when the electrosurgical pencil 100 is changed from one mode to another, the intensity controller 128 must be reset (ie, the protrusions 129a, 129b are connected to the guide channels 130a, 130b). It is envisioned that it may be configured to be repositioned at the most proximal end, thus setting VDN 127 to the zero and / or open position. After being reset, the intensity controller 128 may be adjusted to the intensity level required for the desired and / or selected mode as needed.

  It is envisioned and contemplated that VDN 127 may also include an algorithm that saves the last intensity level setting for each mode. In this way, the intensity controller 128 does not necessarily have to be reset to the last manipulated value when a particular mode is reselected.

  The combination of placing VDN 127 and RF line 216d in electrosurgical pencil 100 essentially eliminates the entire resistor network of the electrosurgical system within electrosurgical pencil 100 (eg, electrosurgical pencil 100 and electrosurgical energy source “G”). To place. Conventional electrosurgical systems typically have an electric current limiting resistor disposed within the electrosurgical pencil to operate the electrosurgical pencil, and an electric to control the intensity of the electrosurgical energy transmitted. A second resistor network is disposed at the surgical energy source. In accordance with the present disclosure, the first resistor network and the second resistor network are both disposed within the electrosurgical pencil 100, i.e., the first resistor network manifested by the actuation switches 120a-120c, and strength. 2 is a second resistor network specified by the controller 128;

  As described above, the strength controller 128 provides some tactile feedback by the mutual engagement of the elastic fingers 128a of the strength controller 128 with detents 131 formed in the upper half shell portion 102a. Can be configured and adapted to. Alternatively, auditory feedback may be from intensity controller 128 (eg, “click”), from electrosurgical energy source “G” (eg, some “timbre”), and / or an auxiliary sound generation device (eg, buzzer). (Not shown).

  As seen throughout FIGS. 1-15, the protrusions 129 a, 129 b and actuation switches 120 a-120 c of the strength controller 128 are disposed in a recess 109 formed in the shell portion 102 a in the upper half of the housing 102. Desirably, the activation switches 120a-120c are arranged such that when the electrosurgical pencil 100 is gripped by the surgeon's hand, the protrusions 129a, 129b of the intensity controller 128 are positioned at the position where the surgeon's finger is normally positioned. It arrange | positions in the position which is not confused with the operation switches 120a-120c. Alternatively, the protrusions 129a, 129b of the strength controller 128 can be configured so that when the electrosurgical pencil 100 is gripped by the surgeon's hand, the actuation switches 120a-120c are placed in a position where the surgeon's finger is normally positioned, It arrange | positions in the position which does not mix with the protrusion parts 129a and 129b of the intensity | strength controller 128. FIG. Further, the recess 109 formed in the shell portion 102a of the upper half of the housing 102 is advantageously provided on the actuation switches 120a-120c and the strength controller 128 while in the surgical field and / or during a surgical procedure. Minimize inadvertent actuation (eg, depression, sliding and / or manipulation).

  As best seen in FIG. 10, the housing 102 may include a series of indicia 31 provided thereon that are visible to the user. The indicia 31 can be a serial number (eg, a number from 1 to 5), which indicates the intensity level to be transmitted. Preferably, the mark 31 is provided on the side of the guide channels 130a and 130b. The indicia 31 are preferably provided on the housing 102 and are spaced along the housing so as to substantially correspond to the detent 131 of tactile feedback. Thus, as the strength controller 128 is moved in the distal and proximal directions, the protrusions 129a, 129b are moved along the guide channels 130a, 130b, corresponding to the position of the detent 131 in tactile feedback. A position having a specific mark 31 is set. For example, the mark 31 may include numerals as shown in FIG. 10, or may include alphabets, alphanumeric combinations, scale symbols, scale shapes, and the like.

  As seen in FIGS. 1-15, the housing 102 of the electrosurgical pencil 100 is shaped / contoured to improve the handling of the electrosurgical pencil 100 by the surgeon. Desirably, when contoured together, the pressure and grip needed to use and / or operate electrosurgical pencil 100 is reduced, thereby potentially reducing the fatigue felt by the surgeon, and Less pressure and grip is required to prevent movement of the electrosurgical pencil 100 during proximal and distal adjustment of the protrusions 129a and 129b.

  Returning now to FIGS. 16-22, a detailed discussion of the plug assembly 200 is provided. As seen in FIGS. 16-22, the plug assembly 200 includes a housing portion 202, a controller terminal 215, and connecting wires 224 that electrically interconnect the housing portion 202 and the controller terminal 215.

  As seen in FIGS. 16-20, the housing portion 202 includes a first half 202a and a second half 202b that are operably engageable with each other, for example, by snap fit engagement. The halves 202a, 202b are configured and adapted to hold a common power pin 204 and a plurality of electrical contacts 206 between these halves, as described in more detail below.

  Desirably, the power pins 204 of the plug assembly 200 preferably extend distally from the housing portion 202 at a location between the first half 202a and the second half 202b. The power pin 204 may be placed off center (ie, closer to the other side edge of the housing portion 202 than one). Plug assembly 200 further includes at least one, preferably a pair of placement pins 212, which also extend from housing portion 202. Placement pin 212 may be positioned between halves 202 a and 202 b of housing portion 202 and is oriented in the same direction as power pin 204. Desirably, the first placement pin 212 a is positioned proximal to the center of the housing portion 202 and the second placement pin 212 b is off-center and opposite the housing portion 202 as compared to the power pin 204. Located proximal to the edge of the. Pins 212a, 212b and 204 may be located on housing portion 202 at a position corresponding to a pin receiving position (not shown) of connector receptacle “R” of electrosurgical generator “G” (see FIG. 1).

  Plug assembly 200 further includes a protrusion 214 extending from housing portion 202. In particular, the protrusion 214 comprises a body portion 214a (see FIGS. 17 and 18) extending from the second half 202b of the housing portion 202 and a cover portion 214b extending from the first half 202a of the housing portion 202. Thus, when the halves 202a, 202b are joined together, the cover portion 214b of the projection 214 surrounds the body portion 214a. The protrusion 214 may be positioned between the power pin 204 and the first placement pin 212a. The protrusions 214 are configured and adapted to hold the electrical contacts 206 at the protrusions so that a portion of each contact 206 is exposed along its front edge or distal edge. While four contacts 206 are shown, it is envisioned that any number of contacts 206 (including but not limited to two, six and eight) may be provided. The protrusion 214 may be located on the housing portion 202 at a position corresponding to the protrusion receiving portion (not shown) of the connector receptacle “R” of the electrosurgical generator “G” (see FIG. 1).

  Since the protrusion 214 extends from the second half 202b of the housing portion 202, the housing portion 202 of the plug assembly 200 is connected to the connector receptacle “R” of the electrosurgical generator “G” until the housing portion 202 is properly oriented. Don't enter. In other words, the protrusion 214 functions as a polarization member. This ensures that the power pins 204 are properly received in the connector receptacle “R” of the electrosurgical generator “G”.

  With continued reference to FIGS. 17-20, connecting wire 224 includes power supply wire 220 electrically connected to power pin 204, control wires 216a-216c electrically connected to respective contacts 206, and respective An RF line 216d electrically connected to the contact 206 is provided.

  Returning now to FIGS. 8, 9, 11, 12, 15, 21, and 22, the control terminal 215 is supported in the housing 202 near its proximal end. The control terminal 215 includes a slot 215a formed in the control terminal for electrically receiving and connecting the VDN 127.

  Returning now to FIG. 26, an electrosurgical pencil according to another embodiment of the present disclosure is generally indicated as 300. Electrosurgical pencil 300 is substantially similar to electrosurgical pencil 100 and will only be discussed in detail to the extent necessary to identify differences in construction and operation.

  The electrosurgical pencil 300 includes a housing 302 that defines an open distal end 303a for selectively receiving the proximal end 110 of the electrocautery blade 106 therein. The open distal end 303a defines a non-circular inner profile 305 (eg, oval, triangular, rectangular, hexagonal (as seen in FIG. 26), serrated, multi-faceted, etc.).

  Desirably, the electrocautery blade 106 is supported in the collar 310. The collar 310 is desirably positioned between the distal end 108 and the proximal end 110 of the electrocautery blade 106. The collar 310 has an outer surface 310a shaped and dimensioned to complement the inner profile 305 of the open distal end 303a. In one embodiment, the open distal end 303a of the housing 302 defines a hexagonal inner profile 305 and the collar 310 defines a hexagonal outer surface 310a.

  The shaped inner profile 305 of the open distal end 303a of the housing 302 can be formed using plastic injection molding, insert molding and / or broaching techniques. Desirably, the open distal end 303a of the housing 302 is completely formed in the lower half shell portion 302b. By completely forming the open distal end 303a in the shell portion 302b of the lower half of the housing 302, the tolerance, size and shape of the opening 303a, and the inner profile 305 are reduced to the housing (the shell portion of its upper half and The lower half of the shell portion is more consistent (as extending through the open distal end). Furthermore, the open distal end 303a formed solely on the lower half shell portion 302b is more centrally located, has less variability, and the housing (its upper half shell portion and lower half Compared to the shell portion extending through the open distal end), it increases the accuracy of the fit at the mating profile (ie, the shaped outer surface 310a of the collar 310).

  Returning now to FIG. 27, an electrosurgical pencil that is substantially similar to the electrosurgical pencils 100 and 300 is shown and detailed to the extent necessary to identify differences in construction and operation in the electrosurgical pencil. Has been discussed. As seen in FIG. 27, the electrosurgical pencils 100, 300 have their respective housings 102, 302 to assist in any free play in connecting the electrocautery blade 106 to the housings 102, 302. A stabilizer 320 disposed therein may be provided. In addition, the stabilizer 320 improves the holding force acting on the proximal end 110 of the electrocautery blade 106 (which holds the electrocautery blade 106 in place in the housing 102, 302). Function. Desirably, the stabilizer 320 is positioned proximal to the electrocautery blade mount 322 near the distal ends of the housings 102, 302 and distal to the cautery blade receptacle 104.

  The stabilizer 320 includes an opening or passage 321 formed therein through which the electrocautery blade 106 is connected to the pencil 100 or 300 through the opening or passage 321. The proximal end 110 of. In use, with respect to the electrosurgical pencil 300, when the electrocautery blade 106 is connected to the housing 302 of the electrosurgical pencil 300, the proximal end 110 is inserted into the open distal end 303a of the lower half shell portion 302b. And operatively engages the blade receptacle 104 through the blade mount 322, through the passage 321 of the stabilizer 320. The stabilizer 320 and in particular the passage 321 of the stabilizer 320 are configured and dimensioned to create an interference fit fit with the proximal end 110 of the electrocautery blade 106. As described above, the stabilizer 320 takes at least any free play at the proximal end 110 of the electrocautery blade 106 and holds the electrocautery blade 106 in place within the housing 302 of the electrosurgical pencil 300. It works to improve the holding power associated with it.

  As shown in FIG. 27, the passage 321 of the stabilizer 320 is substantially circular. Desirably, the passage 321 of the stabilizer 320 has a dimension (ie, radius or diameter) that is smaller than the dimension (ie, radius or diameter) of the proximal end 110 of the electrocautery blade 106. Although the passage 321 of the stabilizer 320 is shown as being circular, it is envisaged that the passage 321 of the stabilizer 320 has any possible shape (eg, but not limited to, slit, star, cross, etc.) Within the scope of the disclosure.

  The stabilizer 320 is made from a flexible polymeric material. Desirably, the stabilizer 320 is made of an insulating material. Stabilizer 320 is preferably manufactured from a material that is commercially available from Versaflex, Incorporated, Kansas City, KS and sold under the trade name Versaflex® 1245x-1.

  Referring now to FIG. 28, an electrosurgical pencil that is substantially similar to electrosurgical pencils 100 and 300 is shown and will now be discussed in detail to the extent necessary to identify differences in configuration and operation. . As shown in FIG. 28, the electrosurgical pencil 100, 300 may comprise at least one, preferably a plurality of runners 330 (three runners 330) disposed within the housing 120, 302 of the electrosurgical pencil 100, 300. 330a-330c are shown in FIG. 28). Desirably, the first runner 330a is positioned near the distal end of the electrosurgical pencil 100, 300; the second runner 330b is positioned near the middle portion of the electrosurgical pencil 100, 300; and the third The runner 330c is positioned near the proximal end of the electrosurgical pencil 100, 300.

  Referring now to FIGS. 29 and 30, an embodiment of the electrosurgical pencil 100 or 300 is shown. As shown in FIGS. 29 and 30, and in particular, FIG. 30, desirably, indicia 31 is provided along at least one side of housing 102, 302 of electrosurgical pencil 100 and / or 300. The indicia 31 comprises a first or alphanumeric part 31a and a second graphic or symbol part 31b. For saving, only one side of the electrosurgical pencil 100, 300 is shown, and the opposite side of the electrosurgical pencil 100, 300 is a mirror image of the first side.

  Desirably, as shown in FIG. 30, the first mark 31 a includes a number that increases from the proximal end of the mark 31 to the distal end of the mark 31. As shown in FIG. 30, the second mark 31 b includes a series of symbols and / or shapes that increase in size from the proximal end of the mark 31 to the distal end of the mark 31. As described above, when the protrusions 129a, 129b move in the distal direction, the intensity of energy delivered to the electrocautery blade 106 increases the number of first indicia 31a and / or the second Increases as indicated by the increase in size of the indicia 31b. As a natural consequence, when the protrusions 129a, 129b move in the proximal direction, the intensity of energy delivered to the electrocautery blade 106 decreases the number of first marks 31a and / or the second marks 31b. Decrease, as shown by the decrease in size.

  As shown in FIG. 30, the electrosurgical pencil 100, 300 further comprises additional graphic or grip enhancement features 33 provided on each side thereof. The grip enhancement feature 33 has an elongated tapered “swoosh” shape (ie, a profile substantially similar to the cross-sectional profile of an aircraft wing) formed along the sides of the housing 102, 302. Prepare. Desirably, the grip enhancing feature 33 is a rubber covered material, a textured surface, or the like. In this manner, when the electrosurgical pencil 100, 300 is held in the surgeon's hand, the surgeon's finger touches and / or touches the grip enhancement feature 33, thereby maneuvering and maneuvering the electrosurgical pencil 100, 300. To improve.

  The electrosurgical pencil 100, 300 can also include a soft touch element 35 provided on the housing 102, 302. As shown in FIG. 30, a soft touch element 35 is desirably provided along its bottom surface near the proximal ends of the housings 102,302. In this manner, when the electrosurgical pencil 100, 300 is held in the surgeon's hand, the soft touch element 35 is stationary in the surgeon's hand, thereby improving the comfort and operability of the electrosurgical pencil 100, 300. Let

  Referring now to FIGS. 31 and 32, the mark 31 comprises a first or alphanumeric part 31a and a second graphic or symbol part 31b. For saving, only one side of the electrosurgical pencil 100, 300 is shown, and the opposite side of the electrosurgical pencil 100, 300 is a mirror image of the first side. Desirably, the second portion 31b of the mark 31 has an elongated tapered “shoe” shape. The relatively large end of the second portion 31b of the mark 31 is located near the largest numerical value of the first portion 31a of the mark 31 or the corresponding character, and the relatively large end of the second portion 31b of the mark 31 It is assumed that the narrow end extends beyond the smallest numerical value of the first portion 31a of the mark 31 or the corresponding character. The second part 31b of the mark 31 is fragmented or otherwise divided into separate parts, each part corresponding to the numerical value of the first part 31a of the mark 31 or the corresponding character. Is contemplated.

  Referring now to FIGS. 33 and 34, the indicia 31 comprises a first or alphanumeric part 31a and a second or symbol part 31b. For saving, only one side of the electrosurgical pencil 100, 300 is shown, and the opposite side of the electrosurgical pencil 100, 300 is a mirror image of the first side. Desirably, the second portion 31b of the mark 31 has an elongated tapered “shoe” shape. Comparison of the second portion 31b of the mark 31 with the relatively large end of the second portion 31b of the mark 31 being located distal to the largest value of the first portion 31a of the mark 31 or the corresponding character It is assumed that the narrow end portion extends beyond the smallest numerical value of the first portion 31a of the mark 31 or the character corresponding thereto. The second portion 31b of the indicia 31 includes notches and the like formed therein for demarcating the segments of the second portion 31b of the indicia 31, wherein each segment has a first portion of the indicia 31 It is contemplated to correspond to the numerical value of portion 31a or the corresponding character.

  As shown in FIG. 34, the electrosurgical pencil 100 or 300 may include a soft touch element 35 that extends along its bottom surface. In this manner, when the electrosurgical pencil 100, 300 is held in the surgeon's hand, the soft touch element 35 rests on the surgeon's hand, thereby comfort and operability of the electrosurgical pencil 100, 300. To improve.

  Desirably, the second portion 31b of the indicia 31 is manufactured from a soft touch material or other material that may improve the grip of the electrosurgical instrument 100 or 300.

  35-37, an electrosurgical pencil according to an alternative embodiment of the present disclosure is generally designated as 400. The electrosurgical pencil 400 is similar to the electrosurgical pencil 100 or 300 and will therefore be considered in detail only to the extent necessary to identify differences in construction and operation.

  As shown in FIG. 35, the electrosurgical pencil 400 includes a range setting sorter in the form of a button 440 supported on the housing 102. Although button sorter 440 is shown positioned proximal to actuation switches 120a-120c, it is envisioned that button sorter 440 may be placed in any convenient, accessible and unconfused position on housing 102, It is within the scope of this disclosure.

  In one embodiment, button selector 440 can be electrically connected to VDN 127 (see FIGS. 9 and 11), or in alternative embodiments, button selector 440 can be a separate respective VDN. (Not shown) may be electrically connected.

  In use, the button sorter 440 is depressed as needed to change the range of energy delivered to the electrocautery end effector 106. In other words, depending on the particular shape and / or configuration of the electrocautery end effector 106 (eg, blade, loop, ball, etc.), the button selector 440 may be pushed down in the direction of arrow Y to The range setting is cycled until an appropriate range setting is selected for the cautery end effector 106.

  By placing the button sorter 440 on the housing 102, the appropriate range settings for a particular electrocautery end effector 106 can all be selected from within the sterilized area or within the surgical field. Thus, if during the operating procedure the surgeon desires and / or needs to change one electrocautery end effector 106 to a different shape electrocautery end effector, the surgeon will have a corresponding electrocautery end effector. Switching the range setting or repeating the range setting by pressing the button selector 440 until the appropriate range setting for 106 is achieved.

  As shown in FIG. 36, the electrosurgical pencil 400 may comprise a sorter in the form of a collet 450 operably supported at the distal end of the housing 102. Desirably, the proximal end of the electrocautery end effector 106 can be introduced through the collet sorter 450 into the blade receptacle 104 (see FIGS. 8 and 9). The collet sorter 450 is rotatably supported at the distal end of the housing 102.

  In one embodiment, the collet sorter 450 can be electrically connected to the VDN 127 (see FIGS. 9 and 11). Alternatively, in alternative embodiments, the collet sorter 450 can be electrically connected to a separate respective VDN (not shown).

  In use, the collet sorter 450 is rotated if necessary to change the range of energy delivered to the electrocautery end effector 106. In other words, depending on the particular shape and / or configuration of the electrocautery end effector 106 (eg, blades, loops, balls, etc.), the collet sorter 450 may set the appropriate range settings for the particular electrocautery end effector 106. To select, it is rotated in the direction of the double-headed arrow “A”. Thus, if the surgeon desires and / or needs to change the electrocautery end effector 106 to an effector having a different shape during the operating procedure, the surgeon will be appropriate for the corresponding electrocautery end effector 106. The collet sorter 450 is rotated until range setting is achieved.

  In one embodiment, as shown in FIG. 37, the range selector electrosurgical pencil 400 includes a distal end 460a operably attached to a blade mount 320 disposed in the housing 102 and an electrosurgical generator “G”. And an optical fiber 460 having a proximal end (not shown) operably attached to. In this embodiment, the proximal end 110 of each separate electrocautery end effector 106 is given a unique color (eg, yellow, red, blue, green, white, black, etc.) and these are electrocautery. When the proximal end 110 of the end effector 106 is inserted into the blade mount 320, it has a unique light intensity.

  Thus, when the electrocautery end effector 106 is inserted into the opening 303 a of the blade mount 320 and into the blade receptacle 104, the optical fiber 460 is the color of light generated by the proximal end 110 of the electrocautery end effector 106. And / or transfer strength to the original electrosurgical generator “G”. The electrosurgical generator “G” then reads the color communicated to it and at the desired and / or required range setting for the particular electrocautery end effector 106 connected to the electrosurgical pencil 400. The range setting is adjusted accordingly, in this embodiment, the optical fiber 460 provides automatic range setting upon insertion of the electrocautery end effector 106 into the opening 303a of the blade mount 320 and / or the blade receptacle 104. Allows selection.

  Although shown and described that the optical fiber 460 automatically selects the range setting of the electrosurgical generator “G” upon connection of the particular electrocautery end effector 106 to the housing 102, the unique electrical It is contemplated that any system can be provided to achieve automatic establishment of range setting based on insertion of an ablation end effector, and this is within the scope of the present disclosure. For example, such a system may be a machine-readable mark provided on the surface of an electrocautery end effector read by a corresponding reader provided on the housing, or a complementary provided in the housing. There may be a mechanical keying element provided on the surface of the electrocautery end effector that is selectively engaged with the receiving element.

  It is further contemplated that any electrosurgical pencil disclosed herein may include a lockout mechanism / system (not shown). In this mechanism, when one of the activation switches is depressed, none of the other remaining activation switches can be depressed, and the electrocautery blade 106 cannot transmit electrosurgical energy.

  It is also contemplated that the electrosurgical pencil 100 may be equipped with smart recognition technology that communicates with a generator to identify the electrosurgical pencil and communicate various surgical parameters associated with the treatment of tissue with the electrosurgical pencil 100. . For example, the electrosurgical pencil 100 may include a bar code or an aztec code that is readable by a generator and presets the generator to default parameters associated with tissue treatment with the electrosurgical pencil. The bar code or aztec code may also be readable by a generator and may comprise programmable data that programs the generator to specific electrical parameters prior to use.

  Other smart recognition technologies are also contemplated that allow the generator to determine the type of device used, or to ensure proper attachment of the device to the generator as a safety mechanism. One such safety connector is identified in US patent application Ser. No. 10 / 718,114 (filed Nov. 20, 2003), the entire contents of which are incorporated herein by reference. ) For example, in addition to the smart recognition technology described above, such safety connectors include a plug or male portion operably coupled to the electrosurgical pencil and a complementary socket or female portion coupled to the electrosurgical generator. Can be prepared. The socket portion is “backwardly adapted” for receiving the connector portion of the electrosurgical pencil disclosed in the above patent application and for receiving the connector portion of prior art electrosurgical instruments.

  Turning now to FIGS. 38-50, an electrosurgical system comprising an electrosurgical pencil according to a further embodiment of the present disclosure is shown generally as 1000. FIG. The electrosurgical pencil 1000 is substantially similar to the electrosurgical pencil 100 and will only be described in detail here to the extent required to identify differences in configuration and / or operation.

  As seen in FIGS. 38-50, the electrosurgical pencil 1000 includes an elongated housing 102 having a right half shell portion 102a and a left half shell portion 102b. As seen in FIG. 38, when the right half shell portion 102a and the left half shell portion 102b are connected to each other, a distal opening 103a is defined therebetween, through which the electrode 106 extends, A proximal opening 103b (see FIG. 41) is then defined between them and a connection cable 224 (see FIG. 38) extends therethrough. The right half shell portion 102a and the left half shell portion 102b are welded together along a portion of their top edge length and along their entire bottom edge length. The connecting cable 224 is held in place between the right half shell portion 102a and the left half shell portion 102b by friction fit engagement in a non-hermetically sealed manner.

  As seen in FIGS. 41, 43, 45, and 46, the electrosurgical pencil 1000 can be operatively and removably connected to the electrode receptacle 104 disposed at the distal end of the housing 102 and the electrode receptacle 104. The electrode 106 further includes a replaceable electrode 106.

  The electrode 106 is in the form of a blade. When coupled to electrode receptacle 104, distal end portion 108 of electrode 106 extends distally beyond electrode receptacle 104, while proximal end portion 110 of electrode 106 is distal of housing 102 by electrode receptacle 104. Selectively held in the edge. The electrode 106 is manufactured from a stainless steel rod having a silicone elastomer coating. Electrode receptacle 104 electrically interconnects electrode 106 to electrosurgical generator “G”.

  38-50, the electrosurgical pencil 1000 includes three activation buttons 120a-120c, each of which is a control unit carrier 121 supported in the housing 102 (see FIG. 41). ) Are mutually supported. Each activation button 120 a-120 c includes a portion that extends through the upper surface of the housing 102.

  As seen in FIG. 41, each activation button 120a-120c is operably supported on a respective tactile element 122a-122c formed on the switch plate 124. Each tactile element 122a-122c is in the form of an arcuate bridge that protrudes upward from the top surface of the switch plate 124 and contacts the respective button 120a-120c. Each tactile element 122a-122c has a first unbiased state in which the tactile element 122a-122c protrudes upward from the top surface of the switch plate 124, and the tactile elements 122a-122c With a second energized state that is shifted downward relative to the voltage divider network 127 by the actuating buttons 120a-120c to close the switch.

  As seen in FIGS. 42-44, each activation button 120a-120c includes a stem 123a-123c, respectively. The stems 123a-123c are operatively engaged with the respective tactile elements 122a-122c.

  Each activation switch 120 a-120 c controls the transfer of RF electrical energy from the generator “G” to the electrode 106. The switch plate 124 is disposed on top of the voltage divider network 127 (hereinafter “VDN 127” herein), so that the tactile elements 122a-122c are operatively coupled to the VDN 127. VDN 127 is a film potentiometer that forms the basis of a switch closure assembly.

  As can be seen in FIG. 42, the VDN 127 comprises a pair of layers of elastic material 140a, 140b. Each of these supports a plurality of electrical contacts 142a, 142b thereon. The electrical contact 142a from the upper layer 140a of the VDN 127 is in an electrically parallel relationship with the electrical contact 142b from the lower layer 140b of the VDN 127. The electrical contacts 142a, 142b of the upper layer 140a and the lower layer 140b of VDN 127 are in a parallel relationship with the tactile elements 122a-122c.

  The upper layer 140a and the lower layer 140b of VDN 127 are separated by a dividing layer 140c. The split layer 140c includes a first series of opening portions 142c formed therein that are vertically aligned with the electrical contacts 142a, 142b. The split layer 140c includes a second opening portion 144c formed therein, which opening portion is between the electrical contact 144a provided on the upper layer 140a and the variable resistance element 144d provided on the lower layer 140b. Is aligned vertically. The upper layer 140a, the lower layer 140b, and the division layer 140c are supported on the support layer 140d.

  In operation and depending on the specific electrosurgical function desired, the surgeon depresses one of the activation buttons 120a-120c in the direction indicated by arrow “Y” (see FIGS. 43 and 44). Thereby pushing and / or shifting the corresponding tactile element relative to the VDN 127, thereby electrically engaging each electrical contact 142b of the lower layer 140b with each electrical contact 142a of the upper layer 140a. In this way, each characteristic voltage is generated and measured by the electrosurgical generator “G”. Depending on this generated characteristic voltage, generator “G” then selects the appropriate waveform output and electro-cauters it via RF line 220 (see FIGS. 48 and 49). Is transmitted to the instrument blade 106.

  The activation buttons 120a-120c are operable to control the mode and / or “waveform duty cycle” to achieve the desired surgical intent. The first activation button 120a is set to generate a first characteristic voltage on the VDN 127. This voltage is measured by an electrosurgical generator “G”, which then transmits a unique duty cycle and / or waveform that produces a cutting effect / function and / or a cutting effect / function. The second activation button 120b is set to generate a second characteristic voltage on the VDN 127. This voltage is measured by an electrosurgical generator “G”, which then transmits a unique duty cycle and / or waveform that results in a split due to hemostatic effect / function. The third activation button 120c is set to generate a third characteristic voltage on the VDN 127. This voltage is measured by an electrosurgical generator “G”, which then transmits a unique duty cycle and / or waveform that produces a hemostatic / coagulation effect / function.

  Division by hemostatic effect / function is defined as having a waveform with a duty cycle of about 12% to about 75%. This hemostasis / coagulation effect / function is defined as having a waveform with a duty cycle of about 1% to about 12%. The cutting effect / function and / or the cutting effect / function is defined as having a waveform with a duty cycle of about 75% to about 100%.

  Division by hemostatic effect / function is transmitted and / or delivered in discrete energy packets. This individual energy packet includes an amplification or rise period, and a decay or fall period that decreases and / or disappears. This individual energy packet delivered during the transmission of the split by hemostatic effect / function includes a near instantaneous amplification of energy and a near instantaneous decrease in energy.

  Division by hemostatic effect / function has a greater duty cycle than cutting effect / function and / or incision effect / function. This division by hemostatic effect / function includes a ratio of 4 pulses per repetition compared to the ratio of 1 pulse per repetition for radiofrequency therapy or nebulization effects / functions. The division by hemostatic effect / function differs from the blend effect / function in that the division by hemostatic effect / function has a very low stored energy on output compared to the blend effect / function. Thus, this division by hemostatic effect / function has a higher crest factor compared to the blend effect / function and has a more sustained output compared to the coagulation effect / function.

  As seen in FIGS. 38-41 and FIGS. 43-45, the electrosurgical pencil 1000 includes a strength controller 128 that is slidably supported in the housing 102. The strength controller 128 includes a pair of protrusions 129a, 129b, each of which is slidably supported in a respective guide channel 130a, 130b (see FIG. 38). The guide channels 130a, 130b have a right half shell portion 102a and a left half shell portion when the right half shell portion 102a and the left half shell portion 102b are joined around the carrier 121 and are ultrasonically welded to each other. It is defined between the shell portion 102b and the carrier 121. Guide channels 130a, 130b are formed on either side of the activation buttons 120a-120c to allow the surgeon to operate the electrosurgical pencil 100 with either the right hand or the left hand.

  As seen in FIG. 43, the intensity controller 128 includes a protrusion 129c. This protrusion extends from the bottom surface of the intensity controller, contacts the VDN 127 and pushes it into or against the VDN 127. As seen in FIG. 50, VDN 127 includes electrical contacts 144a provided on upper layer 140a and lower layer 140b. In this manner, when the strength controller 128 is moved distally and proximally relative to the housing 102, the third protrusion 129c moves along the VDN 127, thereby causing the VDN 127 from the upper layer 140a to the VDN 127. The electrical contact 144a is pushed against the resistance element 144b of the lower layer 140b. By doing so, the resistance value of the resistive element 144b changes, thereby changing the voltage value measured by the electrosurgical generator “G”. Electrosurgical generator “G” then changes the intensity of the waveform transmitted to electrode 106.

  Intensity controller 128, in combination with VDN 127, acts as a slip line potentiometer. The strength controller 128 is the first position where the protrusions 129a, 129b correspond to a relatively low intensity setting, and the most where the protrusions 129a, 129b correspond to a relatively high intensity setting. In the distal position, it has a final position as well as a plurality of intermediate positions where the protrusions 129a, 129b are between the most distal and most proximal positions corresponding to various intermediate intensity settings.

  Sliding operation or sliding movement of the intensity controller 128 adjusts the power parameters (eg, voltage, power and / or current intensity) and / or the shape of the power versus impedance curve that affects the output intensity of the waveform. . As the intensity controller 128 is moved more in the distal direction, power parameters for higher level waveforms are transmitted to the electrode 106. The current intensity ranges from about 60 mA to about 240 mA and has a typical tissue impedance of about 2K ohms. The 60 mA intensity level waveform provides a very mild and / or minimal cutting / split / coagulation effect. The 240 mA intensity level waveform provides a very strong cutting / split / coagulation effect.

  To change the strength of the power parameter of the electrosurgical pencil 100, the surgeon moves at least one of the protrusions 129a, 129b in the direction indicated by the double-headed arrow “X” (see FIGS. 43 and 44 above). The intensity controller 128 is moved by operating either of the above.

  The strength controller 128 provides some tactile feedback by internally engaging the resilient fingers 128a of the strength controller 128 with detents 131 formed on the inner surface of the right half shell portion 102a. It is possible to operate.

  As seen in FIGS. 38-42, the housing 102 includes a series of indicia 31 provided thereon. These marks are visible to the user and reflect the relative level of intensity to be transmitted. Indicia 31 are provided as a series of guide channels 130a, 130b, and are spaced apart to substantially correspond to detents 131 that provide tactile feedback to intensity controller 128. .

  As seen in FIGS. 48 and 49, an RF line 220 is provided for transmitting RF energy to the electrode 106 and electrically connected directly to the electrode receptacle 104 for connection to the proximal end 110 of the electrode 106. Connected. Since RF line 220 is directly connected to electrode receptacle 104, RF line 220 bypasses VDN 127 and blocks VDN 127 and control wires 216a-216d.

  49, VDN 127, in a preferred embodiment, comprises: a first transmission line 127a for identifying various modes of electrosurgical pencil 1000; identifying various strengths of electrosurgical pencil 1000 A second transmission line 127b for; a third transmission line 127c functioning as a ground for VDN 127; and a fourth transmission line 127d for transmitting up to about +5 volts to VDN 127. It is understood that the present disclosure is not limited to transmitting +5 volts via the fourth transmission line 127d and that any suitable voltage can be transmitted via the fourth transmission line 127d.

  As illustrated, and as seen in FIG. 49, with a +5 volt transmission through the fourth transmission line 127d, the voltage across the switch “S1a” is about 0.835 Vdc or the fourth transmission line 127d. The voltage across switch “S1b” is about 1.670 Vdc or about 33.47% of the voltage transmitted via the fourth transmission line 127d. Yes, the voltage across the switch “S1d” is about 3.350 Vdc or about 67.0% of the voltage transmitted via the fourth transmission line 127d, and the voltage across the switch “S1e” is about 4 180Vdc or about 83.6% of the voltage transmitted through the fourth transmission line 127d. Even if the voltage transmitted through the fourth transmission line 127d is greater than or less than +5 volts, the voltage across the switches “S1a-S1d” is +5 volts through the fourth transmission line 127d. It is understood that the voltage ratio remains approximately the same as the voltage ratio shown above when the voltage is transmitted.

  VDN 127 includes a first variable resistor “R1” having a maximum resistance of 2000 ohms. The first resistor “R1” is a variable resistor represented as six individual resistors “R1a to R1f” connected between the third transmission line 127c and the fourth transmission line 127d in FIG. is there. Each resistor “R1a-R1f” of the first set of resistors has a resistance of 333 ohms. The first resistor “R1” can be selectively actuated by the intensity controller 128 at a plurality of positions along its length. The position along the length of the first resistor “R1” corresponds to a detent 131 formed along the inner surface of the right half shell portion 102a (see FIG. 43). The positions along the length of these resistors “R1” are represented as a first set of switches “S1a-S1e”. In operation, when the intensity controller 128 moves along the first resistance “R1”, the resistance value of the first resistance “R1” changes. The change in the resistance value of the first resistor “R1” is represented as closing of the switches “S1a to S1e” in FIG. This change in resistance value of the first resistor “R1” causes a change in voltage measured by the electrosurgical generator “G”. The electrosurgical generator “G” then transmits RF energy to the electrosurgical pencil 1000 with inherent strength.

  If the intensity controller 128 is moved to a third intermediate position along the first resistance “R1” corresponding to the switch “S1c”, a “standby position” in which no resistance exists is established. Thus, electrosurgical generator “G” measures a maximum voltage value of 0 volts.

  The VDN 127 further comprises a second variable resistor “R2” having a maximum resistance of 2000 ohms. The second resistance “R2” is represented as four individual resistances “R2a to R2d” connected between the third transmission line 127c and the fourth transmission line 127d in FIG. Resistor “R2a” has a resistance of 200 ohms, resistor “R2b” has a resistance of 550 ohms, resistor “R2c” has a resistance of 550 ohms, and resistor “R2d” has a resistance of 700 Has ohmic resistance.

  The second resistor “R2” can be selectively activated by any one of the activation buttons 120a to 120c. The position where the second resistor “R2” is activated by the activation buttons 120a-120c is represented as a second set of switches “S2a-S2c”. In operation, the resistance value of the second resistor “R2” is changed by closing the switches “S2a to S2c” of the second set of switches “S2” by the operation of the specific operation buttons 120a to 120c. This change in resistance value of the second resistor “R2” causes a change in voltage measured by the electrosurgical generator “G”. Electrosurgical generator “G” then activates electrosurgical pencil 1000 to communicate to it different operating modes.

  In operation, if more than one activation button 120a-120c is activated at the same time (i.e., in the "multi-key activation" state), the electrosurgical generator "G" is stored in the preset Measures a unique voltage that does not correspond to any of the known voltages applied, and therefore does not actuate the electrosurgical pencil 1000 or convey any operating mode thereto.

  In use, depending on which of the activation buttons 120a-120c is depressed, each tactile element 122a-122c is pushed into contact with the VDN 127 via the respective stem 123a-123c. The pressed activation buttons 120a-120c are electrically engaged with the parallel electrical contacts of VDN 127, thereby changing the value of the second resistance. Depending on the resistance value of the second resistor “R2”, a characteristic voltage is generated and measured by the electrosurgical generator “G” via the first transmission line 127a and the first control wire 216a. (See FIGS. 48 and 49).

  To change the intensity of the electrosurgical pencil 100 power parameter, the surgeon moves the intensity controller 128 as described above, thereby changing the value of the resistance “R1”. Depending on the resistance value of the first resistor “R1”, a characteristic voltage is generated and measured by the electrosurgical generator “G” via the second transmission line 127b and the second control wire 216b. (See FIGS. 48 and 49).

  Returning to FIG. 38, electrosurgical pencil 1000 is coupled to electrosurgical generator “G” via plug assembly 200. As seen in FIGS. 38 and 47-49, the plug assembly 200 includes a housing portion 202 and a connection cable 224 that interconnects the housing portion 202 to the device 1000.

  The housing portion 202 includes a first half 202a and a second half 202b that can be operatively engaged with each other. A power pin 204 of the plug assembly 200 extends distally from the housing portion 202. The power pin 204 is disposed off the center of the housing portion 202. Plug assembly 200 further includes a pair of placement pins 212 that also extend from housing portion 202. The first locating pin 212 a is disposed proximate to the center of the housing portion 202 and the second locating pin 212 b is off-center and the opposite side edge of the housing portion 202 compared to the power pin 204. Is placed close to.

  Plug assembly 200 further includes a protrusion 214 extending from housing portion 202. The protrusion 214 is disposed between the power pin 204 and the first placement pin 212a. Protrusion 214 is configured and adapted to retain electrical contact 206 therein such that a portion of each contact 206 is exposed along its leading and distal edges.

  Since the protrusion 214 extends from between the power pin 204 and the first placement pin 212a, the housing portion 202 of the plug assembly 200 can be connected to the electrosurgical generator “G” unless the housing portion 202 is oriented properly. Does not enter connector receptacle “R”.

  Connection cable 224 includes an RF line 220 electrically connected to power pin 204 and control wires 216 a-216 d electrically connected to respective contacts 206. The control wires 216a to 216d are individually attached to the respective contacts 206 of the protrusions 214.

  The electrosurgical pencil 1000 includes smart recognition technology provided on the plug 200. This communicates with the generator “G” to identify the electrosurgical pencil and communicate various surgical parameters regarding tissue treatment with the electrosurgical pencil 100. As seen in FIGS. 38 and 47, the smart recognition technology comprises an Aztec code 240 (see FIG. 47 above). This code is optically readable by the generator “G” and identifies the electrosurgical pencil 1000 to pre-set this generator “G” to default parameters for tissue treatment with the particular electrosurgical pencil 1000. Set.

  As seen in FIG. 45, the open distal end 103a of the electrosurgical pencil 1000 defines a non-annular internal profile 305. Meanwhile, the electrode 106 is supported in a collar 310 having a molded outer surface 310a that is configured and dimensioned to complement the inner profile 305 of the open distal end 103a. The open distal end 103a of the housing 102 defines a hexagonal inner profile 305 and the collar 310 defines a molded outer surface 310a.

It is also contemplated that current control can be based on current density or designed to deliver a specific current (amp / cm ² ) for a specified surface area.

  Although the devices of the present invention have been described in terms of preferred embodiments, it will be apparent to those skilled in the art that changes and modifications may be made to these embodiments without departing from the spirit and scope of the devices of the present invention.

FIG. 1 is a perspective view of an electrosurgical system comprising an electrosurgical pencil according to one embodiment of the present disclosure. FIG. 2 is a front elevational view of the electrosurgical pencil of FIG. FIG. 3 is a rear elevational view of the electrosurgical pencil of FIGS. 1 and 2. FIG. 4 is a plan view of the electrosurgical pencil of FIGS. FIG. 5 is a bottom view of the electrosurgical pencil of FIGS. FIG. 6 is a left side elevational view of the electrosurgical pencil of FIGS. FIG. 7 is a right side elevation view of the electrosurgical pencil of FIGS. FIG. 8 is a front perspective view of the electrosurgical pencil of FIGS. 1-7 with the upper half shell of the housing removed. FIG. 9 is an exploded perspective view of the electrosurgical pencil of FIGS. FIG. 10 is a perspective view of the electrosurgical pencil of FIGS. 1-9 illustrating the operation of the intensity controller. FIG. 11 is a plan view of the electrosurgical pencil of FIGS. 1-10 with the upper half shell of the housing removed. 12 is a longitudinal cross-sectional view taken along 12-12 of FIG. FIG. 13 is an enlarged view of the details of the indicated area of FIG. 14 is a side elevational view of the longitudinal section of the electrosurgical pencil of FIG. FIG. 15 is an enlarged detail of the indicated area of FIG. FIG. 16 is a perspective view of a plug assembly for use with the electrosurgical pencil of FIGS. FIG. 17 is a perspective view of the plug assembly of FIG. 16 with the upper half shell section removed. 18 is an enlarged perspective view of the details of the indicated area of FIG. FIG. 19 is a plan view of the plug assembly of FIGS. FIG. 20 is an enlarged view of the details of the indicated area of FIG. FIG. 21 is a front perspective view of the lower half portion of the electrosurgical pencil of FIGS. 1-14, illustrating the coupling of the lower half portion and the controller portion of the plug assembly. FIG. 22 is an enlarged view of FIG. FIG. 23 is a perspective view of the controller unit of the electrosurgical pencil of FIGS. 24 is an exploded perspective view of the controller unit of FIG. FIG. 25 is a schematic diagram of a voltage divider network of the present disclosure. FIG. 25A is a schematic diagram of exemplary waveforms transmitted by the electrosurgical pencil of the present disclosure when a split with hemostatic effect / function is performed. FIG. 26 is a partial perspective view from the front of the longitudinal cross-section of the distal end of an electrosurgical pencil according to another embodiment of the present disclosure. FIG. 27 is a partial elevational view of a distal end of an electrosurgical pencil according to the embodiment of FIG. 26 of the present disclosure as viewed from the side in a longitudinal cross-section. FIG. 28 is a side elevational view in longitudinal cross section of the distal end of an electrosurgical pencil according to another embodiment of the present disclosure. FIG. 29 is a plan view of an electrosurgical pencil according to one embodiment of the present disclosure. FIG. 30 is a side elevational view of the electrosurgical pencil of FIG. FIG. 31 is a plan view of an electrosurgical pencil according to yet another embodiment of the present disclosure. FIG. 32 is a side elevational view of the electrosurgical pencil of FIG. FIG. 33 is a plan view of an electrosurgical pencil according to yet another embodiment of the present disclosure. FIG. 34 is a side elevational view of the electrosurgical pencil of FIG. FIG. 35 is a perspective view of an electrosurgical pencil according to an alternative embodiment of the present disclosure. FIG. 36 is a perspective view of an electrosurgical pencil according to yet another embodiment of the present disclosure. FIG. 37 is a partial perspective view from the front of the longitudinal cross-section of the distal end of an electrosurgical pencil according to another embodiment of the present disclosure. FIG. 38 is a perspective view of an electrosurgical system comprising an electrosurgical pencil according to a further embodiment of the present disclosure. FIG. 39 is a plan view of the electrosurgical pencil of FIG. 40 is a side elevational view of the electrosurgical pencil of FIGS. 38 and 39. FIG. FIG. 41 is an exploded perspective view of the electrosurgical pencil of FIGS. FIG. 42 is an exploded perspective view of the controller unit for the electrosurgical pencil of FIGS. 43 is a side elevational view of the electrosurgical pencil of FIGS. 38-42 in a longitudinal cross-section. 44 is an enlarged view of the details of the indicated area of FIG. 45 is a partial perspective view of the distal end of the electrosurgical pencil of FIGS. 38-44 as viewed from the front in the longitudinal section. FIG. 46 is a partial elevational view of the distal end of the electrosurgical pencil of FIGS. 38-45 as viewed from the side in a longitudinal cross-section. 47 is a perspective view of the plug assembly of the electrosurgical pencil of FIGS. 38-46. FIG. 48 is an enlarged perspective view of the plug assembly of FIG. 47 with the upper half section removed. FIG. 49 is a schematic diagram of a voltage divider network for use with the electrosurgical pencil of FIGS. 38-46. FIG. 50 is an exploded perspective view of the voltage divider network of the electrosurgical pencil of FIGS.

Explanation of symbols

100 electrosurgical pencil 102 elongate housing 106 electrocautery end effector 127 voltage divider network G electrosurgical generator

Claims (28)

An electrosurgical pencil,
An elongated housing;
At least one type of electrocautery end effector removably supportable within the housing and extending distally from the housing, the electrocautery end effector being connectable to an electrosurgical energy source The electrosurgical energy source is adapted for use with a plurality of types of electrocautery end effectors configured to operate within a corresponding range setting of energy; and
A plurality of actuation switches supported on the housing, wherein the plurality of actuation switches controls the amount of electrosurgical energy transmitted to the at least one electrocautery end effector;
An intensity controller supported on the housing, the intensity controller configured to adjust a power parameter associated with the transmitted electrosurgical energy;
A single sorter operable independently of each of the plurality of actuation switches and the intensity controller, supported on the housing and from the electrosurgical energy source to the at least one type of electrocautery A single sorter that selects the range of energy to be delivered to the end effector;
Including
The sorter is operable to select one of a plurality of energy range settings corresponding to a selected one of the plurality of types of electrocautery end effectors connected to the housing. And
The sorter achieves proper range setting for the at least one type of electrocautery end effector when the sorter is depressed, so that the at least one type of electrocautery An electrosurgical pencil configured to cycle the plurality of range settings of energy until the end effector is operable within that range setting of energy associated therewith. The sorter is at least one of a button that is supported so as to be pressed down on the housing, or a collet that is supported so as to be rotatable on the housing, and the range setting is performed using the button. The electrosurgical pencil according to claim 1, selected by at least one of depressing and rotating the collet. The electrosurgical pencil according to claim 2, wherein each activation switch is configured and adapted to selectively complete a control loop extending from the electrosurgical energy source upon activation of the activation switch. The electrosurgical pencil according to claim 3, wherein actuation of at least one actuation switch of the plurality of actuation switches results in a split having a hemostatic effect at the electrocautery end effector. Further comprising at least one voltage divider network supported on the housing;
The at least one voltage divider network is electrically connected to the electrosurgical energy source, and the electrosurgical energy source is in electrical communication with the intensity controller and the plurality of activation switches. The electrosurgical pencil according to claim 4, each controlling at least one of an intensity of electrosurgical energy delivered to the pencil and a mode of electrosurgical energy delivered to the electrosurgical pencil. The electrosurgical pencil according to claim 5, wherein the sorter is operatively connected to the voltage divider network. The electrosurgical pencil according to claim 6, wherein the hemostatic division is transmitted in discrete energy packets. The electrosurgical pencil according to claim 7, wherein the energy packet has a substantially instantaneous amplification. The electrosurgical pencil according to claim 8, wherein the energy packet has a substantially instantaneous decrease. The housing defines an open distal end for selectively receiving a proximal end of the electrocautery end effector within the housing, the open distal end of the housing having a non-circular inner profile. The electrosurgical pencil according to claim 6. The collar further comprising a collar operably supporting the electrocautery end effector, the collar having a shaped outer surface that is complementary to a shaped inner profile of the open distal end of the housing. The electrosurgical pencil according to claim 10. 12. The electrosurgical pencil according to claim 11, wherein the inner profile of the collar and the open distal end of the housing has a complementary oval, triangular, rectangular, hexagonal, toothed, polyhedral profile. The electrosurgical pencil according to claim 12, further comprising an end effector receptacle configured and adapted to selectively engage a proximal end of the electrosurgical end effector. The stabilizer further includes a stabilizer operably disposed within the housing, the stabilizer being for increasing a holding force acting on a proximal end of the electrocautery end effector, the stabilizer being a stabilizer of the stabilizer. The electrosurgical pencil according to claim 6, wherein the electrosurgical pencil defines an internally configured passage, the passage configured and adapted to selectively receive a proximal end of the electrocautery end effector. The electrosurgical pencil according to claim 14, wherein the stabilizer is made from a flexible polymeric material. The at least one voltage divider network is electrically connected to the electrosurgical energy source to control the intensity of the electrosurgical energy source delivered from the electrosurgical energy source to the plurality of actuation switches; and Controlling the intensity of electrosurgical energy delivered from the electrocautery end effector back to the plurality of actuation switches;
The at least one voltage divider network includes at least one return control wire that electrically interconnects the electrocautery end effector and the electrosurgical energy source, the return control wire from the electrocautery end effector. The electrosurgical pencil according to claim 6, wherein excess electrosurgical energy is transmitted to the electrosurgical energy source. The intensity controller includes a slip potentiometer supported on the housing, the slip potentiometer operatively communicating with the voltage divider network and movable along the voltage divider network; The electrosurgical pencil according to claim 16. The plurality of activation switches define a first resistor network disposed within the housing;
The electrosurgical pencil according to claim 17, wherein the sliding potentiometer defines a second resistor network disposed within the housing. The slip potentiometer simultaneously controls the intensity of electrosurgical energy delivered to the plurality of actuation switches, so that the intensity of electrosurgical energy delivered to the plurality of actuation switches is a value of the intensity controller. The electrosurgical pencil according to claim 18, wherein The electrosurgical pencil according to claim 19, wherein the at least one actuation switch is configured and adapted to achieve a desired surgical intent by controlling the waveform duty cycle. 21. The electrosurgical pencil according to claim 20, further comprising a three-mode activation switch supported on the housing. Each mode activation switch, when activated, generates a characteristic voltage that is measured by the electrosurgical energy source, which then transmits a corresponding waveform duty cycle to the electrosurgical pencil. The electrosurgical pencil according to claim 21, wherein the electrosurgical procedure is performed. A first activation switch, when activated, generates a first characteristic voltage that is measured by the electrosurgical energy source, and then the electrosurgical energy source has a waveform duty cycle that produces a cutting effect. Communicate
A second activation switch, when activated, generates a second characteristic voltage that is measured by the electrosurgical energy source, and then the electrosurgical energy source has a waveform that produces a split with a hemostatic effect. Transmit the duty cycle,
A third activation switch, when activated, generates a third characteristic voltage that is measured by the electrosurgical energy source, and then the electrosurgical energy source has a waveform duty cycle that produces a coagulation effect. The electrosurgical pencil according to claim 21, wherein the electrosurgical pencil transmits. The electrosurgical pencil according to claim 5, wherein the voltage divider network is a potentiometer. 25. The electrosurgical pencil according to claim 24, further comprising a molded hand grip operably supported on the housing. 26. The electrosurgical pencil according to claim 25, wherein the hand grip is shaped and dimensioned to reduce user hand fatigue. 27. The electrosurgical pencil according to claim 26, further comprising indicia provided on the housing and indicating a level of intensity of energy delivered to the electrocautery end effector. 28. The electrosurgical pencil according to claim 27, wherein the indicia are arranged along a path of movement of the slip potentiometer.

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