A pressure-activated electrosurgical pencil and method of use

Abstract

The application discloses a pressure trigger type electric scalpel pen and a use method thereof. The pressure trigger type electric scalpel pen comprises a pen shell and an electric scalpel assembly. The electric scalpel assembly comprises a scalpel head, an electric connector and a conductive part. The scalpel head is movably installed at the head end of the pen shell and can rotate around the head-to-tail direction of the pen shell and move along the head-to-tail direction of the pen shell. The electric connector is installed at the tail end of the pen shell and comprises an electric terminal extending into the pen shell. The electric terminal comprises a common terminal, an electrocoagulation terminal and an electrotomy terminal which are distributed along the circumference of the pen shell. The conductive part is arranged in the pen shell. One end of the conductive part is electrically connected with the scalpel head and can move with the scalpel head. The other end of the conductive part extends to the electric connector and has an electric connection part. The scalpel head is rotated so that the electric connection part can be aligned with the common terminal and the electrocoagulation terminal or the common terminal and the electrotomy terminal. The embodiment of the application can avoid the key mis-touch problem of the conventional electric scalpel pen and improve the safety of surgery.

Description

Technical Field

[0001] This invention relates to the field of medical device technology, and in particular to a pressure-triggered electrosurgical pen and its method of use. Background Technology

[0002] In existing technology, an electrosurgical pen is a surgical instrument consisting of an electrosurgical head, a handle, and a connecting cable, suitable for performing coagulation or cutting operations on human tissue. Traditional electrosurgical pens are usually button-type, meaning that the mode is switched via an electrocoagulation button and an electrocution button located on the handle. However, during surgery, when the surgeon is holding and operating the electrosurgical pen, their fingers can easily accidentally press the buttons, causing unintended mode switching. This not only disrupts the smoothness of the surgery but may also cause accidental injury to the patient, affecting the safety of the procedure. Summary of the Invention

[0003] This invention aims to at least solve one of the technical problems existing in the prior art. To this end, this invention proposes a pressure-triggered electrosurgical pen, which can avoid the problem of accidental button presses in traditional electrosurgical pens and improve the safety of surgery.

[0004] The present invention also proposes a method for using the aforementioned pressure-triggered electrosurgical pen.

[0005] According to a first aspect of the present invention, a pressure-triggered electrosurgical pen includes a pen housing and an electrosurgical assembly. The electrosurgical assembly includes a cutting head, an electrical connector, and a conductive element. The cutting head is movably mounted on the front end of the pen housing and is rotatable about the front-to-rear direction of the pen housing, and is movable along the front-to-rear direction of the pen housing. The electrical connector is mounted on the rear end of the pen housing and includes electrical terminals extending into the pen housing. The electrical terminals include a common terminal, an electrocoagulation terminal, and an electrocuting terminal spaced circumferentially along the pen housing. The conductive element is disposed on... Inside the pen casing, one end of the conductive element is electrically connected to the blade head and can move with the blade head. The other end of the conductive element extends toward the electrical connector and has a contact portion. Rotating the blade head allows the contact portion to align with the common terminal and the electrocoagulation terminal, or with the common terminal and the electrocutting terminal. When the working end of the blade head is pressed to the target position, the blade head is pressed to move toward the electrical connector, so that the contact portion can contact and conduct the common terminal and the electrocoagulation terminal, or contact and conduct the common terminal and the electrocutting terminal.

[0006] The pressure-triggered electrosurgical pen according to the above embodiments of the present invention has at least the following beneficial effects: The pressure-triggered electrosurgical pen provided in this invention replaces the traditional button-type design of electrosurgical pens by employing a rotation-based switching mode combined with pressure-triggered power-on. Specifically, this invention innovatively designs the blade head, which is fixed or can only move axially in a traditional button-type electrosurgical pen, into a structure that can both rotate and move axially. Combined with electrical terminals at the tail end inside the pen housing and conductive components that move with the blade head, rotating the blade head drives the conductive components to rotate, allowing the conductive components to align with electrical terminals at different positions, thereby achieving switching between electrocoagulation and electrocutting modes. When the blade head is not in operation, the conductive components and electrical terminals are separated, thus preventing electrical circuit formation. When the blade head is in operation and is subjected to pressure towards the tail end of the pen housing, causing it to move axially, it drives the conductive components towards the electrical terminals, ultimately making physical contact between the conductive components and the corresponding electrical terminals to achieve electrical connection, enabling the blade head to perform electrocoagulation or electrocutting operations. When the cutting head loses pressure, gravity can cause the conductive parts to move away from the electrical terminals when the cutting head is facing downwards, thereby achieving power disconnection.

[0007] To further clarify, during surgery, medical personnel only activate the internal conductive components by pressing the working end of the scalpel tip to the target surgical location with sufficient pressure. This allows the internal conductive components to move a sufficient distance and contact the corresponding electrical terminals, thus triggering the appropriate function. In actual surgical procedures, medical personnel hold the electrosurgical pen with a pen-like grip, applying pressure to the target surgical location with the tip facing directly or at an angle. Typically, the pressure on the tip is not perpendicular to its axis, preventing axial movement. Therefore, this invention aligns with the operating habits of medical personnel, ensuring proper functioning. Furthermore, the scalpel tip will not rotate under torque unless intentionally rotated by the medical personnel during surgery. This means there is no risk of accidental mode switching due to accidental touch. This design fundamentally solves the problem of traditional electrosurgical pens with protruding buttons on the handle, which can lead to accidental mode switching due to accidental touches by the surgeon's fingers during handling or movement. This avoids accidental injury to the patient and greatly ensures the safety and smoothness of the surgical process.

[0008] Secondly, traditional button-type electrosurgical scalpels require not only pressing buttons to switch modes but also using hand or foot switches to turn on or off, increasing operational complexity and surgical fatigue for medical staff during prolonged surgeries, thus increasing the possibility of accidental activation due to fatigue and distraction. The rotary switching mode combined with pressure-triggered energization provided in this invention eliminates the need for medical staff to be distracted by finding and pressing buttons while holding the handle, or by operating hand or foot switches. They can simply rotate the scalpel head to pre-select the electrocoagulation or electrocautery mode, and then activate the scalpel by pressing on the target surgical site during normal surgery. This aligns with the surgical habits of medical staff, requiring no additional actions, resulting in smoother operation and reduced surgical fatigue. Furthermore, when the scalpel head leaves the target position and pressure is lost, the conductive component disengages from the electrical terminals, deactivating the scalpel and simplifying operation while preventing accidental injury to non-target tissues, thus improving surgical safety.

[0009] According to some embodiments of the present invention, the lines connecting each pair of the electrical contact endpoints of the common terminal, the electrical contact endpoints of the electrocoagulation terminal, and the electrical contact endpoints of the electrocuting terminal form an equilateral triangle, and the three terminals are respectively located at the three endpoints of the equilateral triangle. The contact portion can rotate around the center point of the equilateral triangle so that the two ends of the contact portion are respectively aligned with the two adjacent electrical contact endpoints.

[0010] According to some embodiments of the present invention, the electrosurgical assembly further includes a movable member movably disposed within the pen housing. The movable member can rotate about the axis of rotation in the head-to-tail direction of the pen housing and can move along the head-to-tail direction of the pen housing. One end of the movable member is provided with a rotating portion extending out of the head end of the pen housing for rotation by the user. The cutting head is inserted into the rotating portion. The other end of the movable member extends toward the electrical connector and is provided with a strip groove. The conductive element includes a contact spring mounted on the movable member. One end of the contact spring is electrically connected to the cutting head, and the other end of the contact spring extends to the strip groove and extends along the strip groove to form the electrical contact portion.

[0011] According to some embodiments of the present invention, the movable member is provided with a sliding hole axially perpendicular to the head-to-tail direction of the pen shell, a movable positioning block is provided in the sliding hole, an elastic member is provided between the positioning block and the bottom wall of the sliding hole, the elastic member is adapted to force the positioning block to partially extend out of the sliding hole, and two first slots are provided circumferentially at intervals on the inner wall of the pen shell. When the positioning block rotates with the movable member, it can engage with one of the first slots to align the electrical contact part with the common terminal and the electrocoating terminal, or with the common terminal and the electrocuting terminal.

[0012] According to some embodiments of the present invention, the first slot is a strip extending along the head-to-tail direction of the pen shell, so that the positioning block moves along the head-to-tail direction of the pen shell with the movable member.

[0013] According to some embodiments of the present invention, the rotating part is provided with an arrow mark pointing to the tail end of the pen shell, the center line of the arrow mark is located on the same plane as the axis of the sliding hole, and the outer peripheral surface of the head end of the pen shell is provided with an electrocoating mark and an electrocutting mark that mate with the arrow mark, the electrocoating mark and the electrocutting mark respectively correspond to the positions of the two first slots.

[0014] According to some embodiments of the present invention, the tail end of the pen shell is provided with a plug hole extending along the head-to-tail direction of the pen shell, one end of the electrical connector is provided with a plug portion that can be movably inserted into the plug hole, the electrical terminal is disposed in the plug portion, the outer periphery of the plug portion is provided with a second slot and a third slot spaced apart along the direction away from the plug hole, the inner wall of the plug hole is provided with an elastic protrusion, the elastic protrusion being able to engage with the second slot or the third slot; wherein, when the electrical connector is in the initial position, the elastic protrusion engages with the second slot, pushing the electrical connector toward the blade head so that the elastic protrusion engages with the third slot, thereby keeping the contact portion and the electrical terminal in contact and conducting.

[0015] According to some embodiments of the present invention, a return spring is provided between the movable member and the pen shell, the return spring being adapted to drive the blade to return to its original position when it is not pressed; a buffer spring is provided inside the electrical terminal, the buffer spring being adapted to buffer the rigid contact between the electrical terminal and the contact portion.

[0016] According to some embodiments of the present invention, a light-transmitting plate is embedded on the outer peripheral surface of the pen shell, and an LED light panel is installed on the inner side of the light-transmitting plate. A circuit board is provided inside the electrical connector, and the electrical terminals and the LED light panel are both electrically connected to the circuit board. When the contact part is not connected to the electrical terminals, the LED light panel does not emit light. When the contact part contacts and connects the common terminal and the electrocoupling terminal, the circuit board controls the LED light panel to emit a first light. When the contact part contacts and connects the common terminal and the electrocuting terminal, the circuit board controls the LED light panel to emit a second light. The colors of the first light and the second light are different.

[0017] A method of using a pressure-triggered electrosurgical pen according to a second aspect embodiment of the present invention includes the following steps: S100: When an electrocautery pen is required to perform an electrocautery operation, rotate the rotating part to align the arrow mark with the electrocautery mark, and then press the working end of the blade tip to the target position so that the blade tip moves toward the electrical connector, thereby enabling the contact part to contact and conduct the common terminal and the electrocautery terminal. S200: When an electric cutter is required to perform an electric cutting operation, rotate the rotating part to align the arrow mark with the electric cutting mark, and then press the working end of the cutter head to the target position so that the cutter head moves toward the electrical connector, thereby enabling the contact part to contact and connect the common terminal and the electric cutting terminal; S300: When the electrosurgical pen needs to be kept in electrocoagulation state, rotate the rotating part to align the arrow mark with the electrocoagulation mark, and then push the electrical connector towards the blade head to make the elastic protrusion engage with the third slot, thereby making the electrical contact part maintain contact and conduction with the common terminal and the electrocoagulation terminal; S400: When the electric cutter needs to maintain the electric cutting state, rotate the rotating part to align the arrow mark with the electric cutting mark, and then push the electrical connector towards the cutter head to make the elastic protrusion engage with the third slot, thereby making the electrical contact part maintain contact and conduction with the common terminal and the electric cutting terminal.

[0018] Additional aspects and advantages of the invention will be set forth in part in the description which follows, and in part will be obvious from the description, or may be learned by practice of the invention. Attached Figure Description

[0019] The present invention will be further described below with reference to the accompanying drawings and embodiments, wherein: Figure 1 This is a schematic diagram of the structure of a pressure-triggered electrosurgical pen according to some embodiments of the present invention; Figure 2 This is a schematic diagram showing the alignment of the contact part and electrical terminal in some embodiments of the present invention; Figure 3 These are schematic diagrams of the structures of movable parts according to some embodiments of the present invention; Figure 4 This is a cross-sectional view of a pressure-triggered electrosurgical pen according to some embodiments of the present invention; Figure 5 for Figure 4 Enlarged view of point A in the middle; Figure 6 for Figure 4 Enlarged view at point B in the middle; Figure 7 This is another cross-sectional view of a pressure-triggered electrosurgical pen according to some embodiments of the present invention; In the attached figures, the following labels are used: Pen casing 100; First card slot 110; Insertion hole 120; Elastic protrusion 121; Light-transmitting plate 130; LED light panel 140; Blade 200; Electrical connector 300; common terminal 310; electrocoagulation terminal 320; electrocuting terminal 330; plug-in part 340; second slot 341; third slot 342; buffer spring 350; circuit board 360; Conductive component 400; Electrical contact part 410; Moving part 500; rotating part 510; arrow mark 511; strip groove 520; sliding hole 530; positioning block 540; elastic element 550; return spring 560. Detailed Implementation

[0020] Embodiments of the present invention are described in detail below. Examples of these embodiments are shown in the accompanying drawings, wherein the same or similar reference numerals denote the same or similar elements or elements having the same or similar functions throughout. The embodiments described below with reference to the accompanying drawings are exemplary and are only used to explain the present invention, and should not be construed as limiting the present invention.

[0021] In the description of this invention, it should be understood that the orientation descriptions, such as up, down, front, back, left, right, etc., are based on the orientation or positional relationship shown in the accompanying drawings. They are only for the convenience of describing this invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limiting this invention.

[0022] In the description of this invention, "several" means one or more, "more than" means two or more, "greater than," "less than," and "exceeding" are understood to exclude the stated number, while "above," "below," and "within" are understood to include the stated number. The use of "first" and "second" in the description is merely for distinguishing technical features and should not be construed as indicating or implying relative importance, or implicitly indicating the number of indicated technical features, or implicitly indicating the order of the indicated technical features.

[0023] In the description of this invention, unless otherwise explicitly defined, terms such as "setting," "installation," and "connection" should be interpreted broadly. Those skilled in the art can reasonably determine the specific meaning of these terms in this invention in conjunction with the specific content of the technical solution. In the description of this invention, the terms "one embodiment," "some embodiments," "illustrative embodiment," "example," "specific example," or "some examples," etc., refer to specific features, structures, materials, or characteristics described in connection with that embodiment or example, which are included in at least one embodiment or example of this invention. In this specification, the illustrative expressions of the above terms do not necessarily refer to the same embodiment or example. Moreover, the specific features, structures, materials, or characteristics described can be combined in any suitable manner in one or more embodiments or examples.

[0024] In existing technology, an electrosurgical pen is a surgical instrument consisting of an electrosurgical head, a handle, and a connecting cable, suitable for performing coagulation or cutting operations on human tissue. Traditional electrosurgical pens are usually button-type, meaning that the mode is switched via an electrocoagulation button and an electrocution button located on the handle. However, during surgery, when the surgeon is holding and operating the electrosurgical pen, their fingers can easily accidentally press the buttons, causing unintended mode switching. This not only disrupts the smoothness of the surgery but may also cause accidental injury to the patient, affecting the safety of the procedure.

[0025] To solve the above technical problems, refer to Figures 1 to 4This invention proposes a pressure-triggered electrosurgical pen, comprising a pen housing 100 and an electrosurgical assembly. The electrosurgical assembly includes a cutting head 200, an electrical connector 300, and a conductive element 400. The cutting head 200 is movably mounted on the first end of the pen housing 100 and can rotate about the first-to-last direction of the pen housing 100, and can also move along the first-to-last direction of the pen housing 100. The electrical connector 300 is mounted on the last end of the pen housing 100 and includes electrical terminals extending into the pen housing 100. The electrical terminals include a common terminal 310, an electrocoagulation terminal 320, and an electrocuting terminal 330 distributed circumferentially along the pen housing 100. A conductive element 400 is disposed within the pen housing 100. One end of the conductive element 400 is electrically connected to the cutting head 200 and can move with the cutting head 200. The other end of the conductive element 400 extends towards the electrical connector 300 and has a contact portion 410. Rotating the cutting head 200 allows the contact portion 410 to align with the common terminal 310 and the electrocoating terminal 320, or with the common terminal 310 and the electrocutting terminal 330. When the working end of the cutting head 200 is pressed to the target position, the cutting head 200 is pressed to move towards the electrical connector 300, so that the contact portion 410 can contact the conductive common terminal 310 and the electrocoating terminal 320, or contact the conductive common terminal 310 and the electrocutting terminal 330.

[0026] It is understood that the pressure-triggered electrosurgical pen provided in this embodiment of the invention replaces the button design of traditional electrosurgical pens by adopting a rotation switching mode combined with pressure-triggered power-on. Specifically, this embodiment of the invention innovatively designs the blade head 200, which is fixed or can only move axially in a traditional button-type electrosurgical pen, into a structure that can both rotate and move axially. Combined with the electrical terminals at the tail end inside the pen housing 100 and the conductive element 400 that moves with the blade head 200, rotating the blade head 200 drives the conductive element 400 to rotate, allowing the conductive element 400 to align with electrical terminals at different positions, thereby achieving the switching between electrocoagulation mode and electrocutting mode. When the cutter head 200 is not in operation, the conductive element 400 is separated from the electrical terminal, and therefore cannot conduct electricity to form an electrical circuit. When the cutter head 200 is in operation and is subjected to pressure towards the tail end of the pen shell 100, causing it to move axially, it can move the conductive element 400 towards the electrical terminal, eventually making physical contact between the conductive element 400 and the corresponding electrical terminal to achieve conductivity, thereby enabling the cutter head 200 to perform electrocoagulation or electrocutting operations. When the cutter head 200 loses pressure, gravity can cause the conductive element 400 to move away from the electrical terminal when the cutter head 200 is pointing downwards, thereby de-energizing the circuit.

[0027] To further clarify, during surgery, medical personnel must press the working end of the scalpel tip 200 to the target surgical position to apply sufficient pressure. Only then will the internal conductive component 400 move a sufficient distance and contact the corresponding electrical terminal, thereby triggering the corresponding function. In actual surgical operations, medical personnel hold the electrosurgical pen with a pen-like grip, allowing the scalpel tip 200 to apply pressure to the target surgical position in a straight or tilted position. Typically, there is no situation where the pressure direction on the scalpel tip 200 is perpendicular to its axial direction, preventing axial movement. Therefore, this embodiment of the invention conforms to the operating habits of medical personnel, ensuring the normal implementation of the function. Furthermore, during surgery, unless the medical personnel intentionally rotate the scalpel tip 200, it will not be subjected to torque and will not rotate. That is to say, there is no situation where accidental mode switching occurs due to accidental contact with the scalpel tip 200. This design fundamentally solves the problem of traditional electrosurgical scalpels having protruding buttons on the handle, which can easily cause doctors to accidentally press and switch modes during the grip or movement of the device. This avoids accidental injury to the patient and greatly ensures the safety and smoothness of the surgical procedure.

[0028] Secondly, traditional button-type electrosurgical scalpels require not only pressing buttons to switch modes but also using hand or foot switches to turn on or off, increasing operational complexity and surgical fatigue for medical staff during prolonged surgeries, thus increasing the possibility of accidental activation due to fatigue and distraction. The rotary switching mode combined with pressure-triggered energization provided in this invention eliminates the need for medical staff to be distracted by searching for and pressing buttons while holding the handle, or by operating hand or foot switches. They can simply rotate the blade head 200 to pre-select the electrocoagulation or electrocautery mode, and then activate the scalpel by pressing on the target surgical site during normal surgery. This aligns with the surgical procedures of medical staff, requiring no additional actions, resulting in smoother operation and reduced surgical fatigue. Furthermore, when the blade head 200 leaves the target position and loses pressure, the conductive component 400 disconnects from the electrical terminals, thus deactivating the scalpel. This simplifies operation and prevents accidental injury to non-target tissues, improving surgical safety.

[0029] Furthermore, refer to Figure 2 According to some embodiments of the present invention, the lines connecting the electrical contact endpoints of the common terminal 310, the electrical contact endpoints of the electrocoagulation terminal 320, and the electrical contact endpoints of the electrocuting terminal 330 form an equilateral triangle, and the three are respectively located at the three endpoints of the equilateral triangle. The contact part 410 can rotate around the center point of the equilateral triangle so that the two ends of the contact part 410 are respectively aligned with two adjacent electrical contact endpoints.

[0030] It is understood that, in this embodiment of the invention, the geometric symmetry of an equilateral triangle ensures that the spacing between the three electrical contact endpoints is completely consistent. This allows the energizing portion 410 of the conductive element 400 to precisely align two adjacent electrical contact endpoints with high stability and repeatability during rotational switching, avoiding poor contact or slippage caused by uneven distribution of electrical terminals. Specifically, when the common terminal 310 is aligned with the electrocoagulation terminal 320, the electrical circuit is conductive to achieve electrocoagulation operation; when the common terminal 310 is aligned with the electrocuting terminal 330, the electrical circuit is conductive to achieve electrocuting operation; when the electrocoagulation terminal 320 and the electrocuting terminal 330 are aligned, the electrical circuit is not conductive. This structural design simplifies the internal space layout and ensures the reliability of electrical signal switching and the smoothness of mechanical movement.

[0031] Furthermore, refer to Figure 3 and Figure 4 According to some embodiments of the present invention, the electrosurgical assembly further includes a movable member 500 movably disposed within the pen housing 100. The movable member 500 can rotate about the axis of rotation of the pen housing 100 in the head-to-tail direction and can move along the head-to-tail direction of the pen housing 100. One end of the movable member 500 is provided with a rotating part 510 extending out of the head end of the pen housing 100 for the user to rotate. The cutting head 200 is inserted into the rotating part 510. The other end of the movable member 500 extends toward the electrical connector 300 and is provided with a strip groove 520. The conductive member 400 includes a contact spring fixedly mounted on the movable member 500. One end of the contact spring is electrically connected to the cutting head 200, and the other end of the contact spring extends to the strip groove 520 and extends along the strip groove 520 to form a contact part 410.

[0032] Understandably, during use, medical personnel directly rotate the blade head 200 via the rotating part 510, causing the movable part 500 to rotate as a whole, thereby achieving mode switching. Pressing the blade head 200 causes the movable part 500 to move towards the tail end of the pen shell 100, so that the contact spring's energized part 410 makes contact with the electrical terminal of the corresponding mode. On the other hand, the strip groove 520 can effectively limit the contact spring's energized part 410, thereby preventing the energized part 410 from shifting due to vibration or other factors during use, thus ensuring that the energized part 410 can be accurately aligned with the electrical terminal of the corresponding mode. At the same time, the above-mentioned design of the contact spring moving synchronously with the movable part 500 is not only compact in structure, but also utilizes the contact spring to provide a certain degree of elastic contact when making contact with the electrical terminal, effectively avoiding component wear caused by rigid contact, ensuring the stability of electrical signal transmission, and simplifying the assembly process.

[0033] It should be noted that, in this embodiment of the invention, the contact spring is made of a metal material, including but not limited to iron, stainless steel, aluminum alloy, phosphor bronze, brass, single crystal copper, pure copper, and beryllium copper. The specific selection can be determined according to actual needs and is not specifically limited here. Furthermore, in this embodiment of the invention, the conductive element 400 can also be made of conductive materials such as conductive plastic and conductive rubber, which can effectively conduct current; this will not be elaborated further here.

[0034] Furthermore, refer to Figures 3 to 5 According to some embodiments of the present invention, the movable member 500 is provided with a sliding hole 530 axially perpendicular to the head-to-tail direction of the pen shell 100. A movable positioning block 540 is provided in the sliding hole 530. An elastic member 550 is provided between the positioning block 540 and the bottom wall of the sliding hole 530. The elastic member 550 is adapted to force the positioning block 540 to partially extend out of the sliding hole 530. Two first slots 110 are provided circumferentially at intervals on the inner wall of the pen shell 100. When the positioning block 540 rotates with the movable member 500, it can engage with one of the first slots 110 so that the contact part 410 is aligned with the common terminal 310 and the electrocoagulation terminal 320, or aligned with the common terminal 310 and the electrocuting terminal 330.

[0035] Understandably, when medical staff need to switch modes, they rotate the rotating part 510 to drive the movable part 500 to rotate, causing the positioning block 540 to disengage from the first slot 110 corresponding to the current mode. As the medical staff continues to rotate, the positioning block 540 aligns and engages with another first slot 110, providing a clear "click" tactile and audible feedback to remind the medical staff that the mode has been correctly switched, ensuring the precise alignment of the power receiving part 410 with the electrical terminals. On the other hand, in this embodiment of the invention, the elastic member 550 forces the positioning block 540 to partially extend and engage with the first slot 110, thereby achieving effective physical limitation during use and effectively preventing unintentional rotation of the blade 200 during surgery, improving the safety and precision of the surgery.

[0036] It should be noted that in this embodiment of the invention, the common terminal 310, the electrocoagulation terminal 320, and the electrocution terminal 330 are all connected to corresponding conductive wires. The common terminal 310 can be used as the negative terminal, and the electrocoagulation terminal 320 and the electrocution terminal 330 can both be used as the positive terminal. When the energizing part 410 is in contact with the common terminal 310 (negative terminal) and the electrocoagulation terminal 320 (positive terminal) to conduct electricity, or when it is in contact with the common terminal 310 (negative terminal) and the electrocution terminal 330 (positive terminal) to conduct electricity, an electrical circuit can be formed to achieve the corresponding function. The principle of electrocution and electrocoagulation is the heat effect generated by high-frequency electricity. The difference between the two is that the heat effect of electrocution has a higher temperature. Furthermore, if the contact part 410 makes contact with the electrocoating terminal 320 (positive) and the electrocuting terminal 330 (positive), a short circuit will occur. Therefore, in this embodiment of the invention, without considering other special circumstances, the inner wall of the pen shell 100 is provided with only two first slots 110 spaced apart along the circumference to correspond to the electrocuting mode and the electrocoating mode, respectively. Figure 2 and Figure 7 As shown, the two first slots 110 are symmetrically arranged and adapted to the equilateral triangle distribution of the electrical terminals. That is to say, during the rotation of the conductive member 400, the first slots 110 cooperate to ensure that the two ends of the contact part 410 are either aligned with the common terminal 310 and the electrocoagulation terminal 320, or aligned with the common terminal 310 and the electrocution terminal 330, thereby effectively preventing short circuits caused by incorrect alignment of the electrocoagulation terminal 320 and the electrocution terminal 330.

[0037] Preferably, according to some embodiments of the present invention, the positioning block 540 can be a ball made of different materials such as steel ball, stainless steel ball and iron ball, which can make the movement smoother and thus improve the feel of use; the elastic element 550 can be a spring, silicone or rubber, etc., which can be determined according to the actual situation, and will not be described in detail here.

[0038] Understandably, after the positioning block 540 and the first slot 110 are engaged and positioned, when the movable member 500 is subjected to pressure to move towards the tail end of the pen shell 100, the movable member 500 will cause the positioning block 540 to disengage from the first slot 110, resulting in the movable member 500 losing its physical restraint along the circumference of the pen shell 100. Although the positioning block 540 will be tightly attached to the inner wall of the pen shell 100 under the elastic action of the elastic member 550, the movable member 500 may also rotate unexpectedly during its movement towards the tail end of the pen shell 100, causing the electrical connection part 410 and the electrical terminal to misalign, which will have an adverse effect on the function triggering. On the other hand, if the elastic member 550 provides a large elastic force to the positioning block 540, and the pressure required on the patient's target position during surgery is small, the positioning block 540 may not be able to disengage from the first slot 110 and may become stuck when the medical staff presses the patient's target position with the blade 200, resulting in the inability to achieve the pressure triggering function. In order to solve the above technical problems, refer to Figure 5 According to some embodiments of the present invention, the first slot 110 is a strip extending along the head-to-tail direction of the pen housing 100, so as to allow the positioning block 540 to move along the head-to-tail direction of the pen housing 100 with the movable member 500. Specifically, the strip-shaped first slot 110 provides a guide space for the positioning block 540 to slide along the axial direction (i.e., the head-to-tail direction) of the pen housing 100. When medical personnel press the blade head 200 to perform surgical operations, the movable member 500 drives the positioning block 540 to move along the first slot 110 toward the tail end of the pen housing 100. This can both limit the positioning block 540 along the circumference of the pen housing 100 and maintain the directional movement of the positioning block 540 along the axial direction of the pen housing 100, ensuring the reliability and accuracy of function triggering.

[0039] It is understandable that, because the pressure-triggered electrosurgical pen of this embodiment integrates the function switching components (i.e., the conductive element 400 and the electrical terminals) inside the pen housing 100, compared to the traditional button-type electrosurgical pen which exposes the function switching components (i.e., the electrocoagulation button and the electrosurgical cutting button), medical personnel cannot easily know whether it has been switched to the electrosurgical cutting mode or the electrocoagulation mode before each use. To solve the above technical problem and enable medical personnel to quickly confirm which mode the electrosurgical pen has been switched to during the preparation of each surgery, refer to... Figure 1 and Figure 3 According to some embodiments of the present invention, the rotating part 510 is provided with an arrow mark 511 pointing to the tail end of the pen shell 100. The center line of the arrow mark 511 and the axis of the sliding hole 530 are located on the same plane, that is, their positions correspond. The outer peripheral surface of the first end of the pen shell 100 is provided with an electrocoating mark and an electrocutting mark (not shown in the figure) that are aligned with the arrow mark 511. The electrocoating mark and the electrocutting mark correspond to the positions of the two first slots 110 respectively.

[0040] Specifically, the arrow marker 511, the electrocoagulation marker, and the electro-resection marker provide medical staff with intuitive visual feedback. Whether before or during surgery, medical staff only need to visually observe whether the arrow marker 511 is pointing at the electrocoagulation marker or the electro-resection marker to quickly and accurately determine whether the electrosurgical pen is in electrocoagulation mode or electro-resection mode. This visual mode indication design, combined with the physical positioning of the positioning block 540 and the first slot 110, achieves precise positioning, greatly reduces the risk of misoperation, and improves surgical efficiency and safety.

[0041] Optionally, according to some embodiments of the present invention, the electrocoagulation mark and the electrocutting mark may be corresponding text marks, including but not limited to "electrocoagulation" and "electrocutting", or they may be different graphic marks that are significantly different and easy to distinguish, including but not limited to circles, rectangles and triangles, which can be determined according to the actual situation, and will not be elaborated here.

[0042] Understandably, during actual surgery, there may be situations where medical staff need to maintain electrocautery or electrocoagulation at a specific surgical target location; or where it is inconvenient for medical staff to use the blade 200 to apply single or multiple pressure actions at a specific surgical target location; or other situations where the electrical connection part 410 needs to maintain contact and conduction with the corresponding electrical terminals. Based on the above technical issues, referring to... Figure 4 and Figure 6 According to some embodiments of the present invention, the tail end of the pen shell 100 is provided with a plug hole 120 extending in the direction of the head and tail of the pen shell 100, one end of the electrical connector 300 is provided with a plug portion 340 that can be movably inserted into the plug hole 120, and an electrical terminal is provided in the plug portion 340. The outer periphery of the plug portion 340 is provided with a second slot 341 and a third slot 342 spaced apart in a direction away from the plug hole 120. The inner wall of the plug hole 120 is provided with an elastic protrusion 121, which can engage with the second slot 341 or the third slot 342. When the electrical connector 300 is in the initial position, the elastic protrusion 121 engages with the second slot 341. At this time, the movable part 500 needs to move towards the tail end of the pen shell 100 to achieve contact and conduction. When it is necessary for the contact part 410 to maintain contact and conduction with the corresponding electrical terminal, the electrical connector 300 is pushed towards the blade head 200 so that the elastic protrusion 121 engages with the third slot 342, thereby enabling the contact part 410 to maintain contact and conduction with the electrical terminal.

[0043] Specifically, when medical personnel need to maintain contact and conductivity between the electrical contact part 410 and the electrical terminal, they first observe the current mode of the electrosurgical pen using the arrow indicator 511. Then, they rotate the rotating part 510 to switch to the desired mode. Subsequently, by pushing or pressing the electrical connector 300, the elastic protrusion 121 is disengaged from the second slot 341 and moves towards the third slot 342, eventually engaging with it. This causes the electrical connector 300 to move the electrical terminal towards the electrical contact part 410, ultimately achieving contact and conductivity. This allows the electrosurgical pen to maintain electrocoagulation or electrocautery mode. To deactivate this mode, the electrical connector 300 is pulled back to disengage from the third slot 342 and re-engage with the second slot 341. The structure is simple and the operation is convenient. It is understood that the pressure-triggered electrosurgical pen provided in this embodiment of the invention not only proposes a novel structural method that combines rotation switching mode with pressure-triggered power-on, but also, through the above-mentioned structural optimization, enables it to have the function of continuous power-on of traditional electrosurgical pens, making the pressure-triggered electrosurgical pen applicable to more application scenarios and improving its applicability.

[0044] Preferably, according to some embodiments of the present invention, the second slot 341 and the third slot 342 are both annular shapes extending circumferentially along the insertion portion 340, and the elastic protrusion 121 is also annular shape extending circumferentially along the inner wall of the insertion hole 120, so as to increase the contact area, thereby making the electrical connector 300 more stable during movement, and making the connection between the elastic protrusion 121 and the second slot 341 or the third slot 342 more reliable.

[0045] It is understandable that in actual surgical procedures, after completing electrocoagulation or electrocautery, medical personnel may hold the electrosurgical pen with the blade 200 in a horizontal or upward position. This could mean that when the blade 200 leaves the target surgical location, the movable part 500 may not be able to quickly move the contact part 410 away from the electrical terminal under gravity to disconnect the power, potentially causing accidental injury to non-target locations without disconnecting the power. Alternatively, in non-surgical situations, medical personnel may tilt the blade 200 upwards or upwards while moving the electrosurgical pen, causing the conductive part 400 to descend due to gravity, potentially leading to accidental contact between the conductive part 400 and the electrical terminal. Based on the above technical issues, referring to... Figure 4According to some embodiments of the present invention, a return spring 560 is provided between the movable member 500 and the pen shell 100. The return spring 560 is adapted to drive the blade head 200 to return to its original position when it is not compressed. Specifically, the return spring 560 not only ensures that the blade head 200 remains stationary when not in operation to avoid accidental energization, but also ensures that the blade head 200 can quickly return to its original position after electrocoagulation or electrocautery operations, thereby rapidly cutting off the current and improving the safety of the surgery. It should be noted that, in the embodiments of the present invention, the specific elastic coefficient of the return spring 560 can be designed and selected according to actual needs, and is not specifically limited here.

[0046] Understandably, in actual use, although the conductive component 400, when using contact springs, can provide a certain buffering effect for contact with electrical terminals, frequent contact and conduction can still easily cause wear on the metal surface, affecting its service life. Based on the above technical issues, referring to... Figure 6 According to some embodiments of the present invention, a buffer spring 350 is provided inside the electrical terminal. The buffer spring 350 is adapted to buffer the rigid contact between the electrical terminal and the contact part 410. Specifically, the buffer spring 350 effectively absorbs the impact energy at the moment of contact between the contact part 410 and the electrical terminal, avoiding wear or deformation of the metal surface caused by hard collision, extending the service life of the electrical terminal, and reducing arc interference caused by contact bounce, thereby improving the safety of electrical contact.

[0047] Understandably, during actual surgery, the surgical field may be obstructed by blood or tissue fluid, preventing medical staff from clearly observing whether the blade 200 has made proper contact and been pressed to successfully trigger the corresponding function; or, even if the blade 200 has made proper contact and been pressed, factors such as damaged circuit components may prevent the conductive part 400 from successfully forming an electrical circuit with the electrical terminals. Medical staff cannot promptly detect these situations, leading to difficulties in the smooth progress of the surgery. To solve these technical problems, refer to... Figure 4 and Figure 5 According to some embodiments of the present invention, a light-transmitting plate 130 is embedded on the outer peripheral surface of the pen shell 100, and an LED light panel 140 is installed on the inner side of the light-transmitting plate 130. A circuit board 360 is provided inside the electrical connector 300, and the electrical terminals and the LED light panel 140 are electrically connected to the circuit board 360. Specifically, when the connecting part 410 is not connected to the electrical terminals, the LED light panel 140 does not emit light. When the connecting part 410 contacts and connects the common terminal 310 and the electrocoupling terminal 320, the circuit board 360 controls the LED light panel 140 to emit a first light. When the connecting part 410 contacts and connects the common terminal 310 and the electrocuting terminal 330, the circuit board 360 controls the LED light panel 140 to emit a second light. The first light and the second light are different colors.

[0048] It is understood that this embodiment of the invention solves the technical problem of doctors being unclear about the current working status of the electrosurgical pen when the surgical field of view is obscured by blood or tissue fluid and the indicator on the scalpel head 200 cannot be directly observed, by setting LED light panels 140 and light-transmitting panels of different colors inside the pen casing 100. Specifically, the current working status of the electrosurgical pen is intuitively displayed by different colored lights, allowing medical staff to know the working status of the electrosurgical pen at any time during the operation. For example, a blue primary light could represent electrocoagulation, and a yellow secondary light could represent electrocautery, but this is not limited to these two scenarios. When medical staff observe a blue light, they know the electrocautery pen is currently in electrocoagulation mode; when they observe a yellow light, they know it is in electrocautery mode; and when they do not observe any light, they know the pen is not in operation. During surgery, the pressure applied to the blade 200 can be increased within an appropriate range to confirm the pen is functioning correctly. If the light still does not illuminate, it promptly alerts medical staff that the pen may be damaged, allowing for timely replacement and ensuring the smooth progress of the surgery. Furthermore, the light-transmitting plate 130 can be located in the center or near the center of the pen casing 100, ensuring the light indicator is not interfered with by liquid at the surgical site. Even if the medical staff's gaze is not focused on the pen casing 100, they can still perceive the light status through peripheral vision, further enhancing the level of safety monitoring during surgery.

[0049] Furthermore, to make it easier for medical staff to observe the light indicators, refer to Figure 1 and Figure 7 According to some embodiments of the present invention, the light-transmitting plate 130 is an elongated strip extending along the head and tail direction of the pen shell 100, and at least two light-transmitting plates 130 are equidistantly arranged along the circumference of the pen shell 100, thereby increasing the display range of the light indicator, so that medical staff can observe the light indicator from more angles and improve surgical efficiency.

[0050] A method for using a pressure-triggered electrosurgical pen applied to the above embodiments according to the present invention includes the following steps: S100: When an electric knife pen is required to perform electrocoagulation operation, rotate the rotating part 510 to align the arrow mark 511 with the electrocoagulation mark, and then press the working end of the knife head 200 to the target position so that the knife head 200 moves toward the electrical connector 300, thereby enabling the contact part 410 to contact the common terminal 310 and the electrocoagulation terminal 320. S200: When an electric cutter is required to perform an electric cutting operation, rotate the rotating part 510 to align the arrow mark 511 with the electric cutting mark, and then press the working end of the cutter head 200 to the target position so that the cutter head 200 moves toward the electrical connector 300, thereby enabling the contact part 410 to contact the common terminal 310 and the electric cutting terminal 330. S300: When the electric scalpel needs to be kept in the electrocoagulation state, rotate the rotating part 510 to align the arrow mark 511 with the electrocoagulation mark, and then push the electrical connector 300 toward the scalpel head 200 so that the elastic protrusion 121 engages with the third slot 342, thereby making the electrical connection part 410 maintain contact and conduction with the common terminal 310 and the electrocoagulation terminal 320. S400: When the electric knife pen needs to be kept in the electric cutting state, rotate the rotating part 510 to align the arrow mark 511 with the electric cutting mark, and then push the electrical connector 300 to move towards the blade head 200 so that the elastic protrusion 121 engages with the third slot 342, thereby making the power receiving part 410 maintain contact and conduction with the common terminal 310 and the electric cutting terminal 330.

[0051] The embodiments of the present invention have been described in detail above with reference to the accompanying drawings. However, the present invention is not limited to the above embodiments. Within the scope of knowledge possessed by those skilled in the art, various changes can be made without departing from the spirit of the present invention.

Claims

1. A pressure-triggered electrosurgical pen, characterized in that, include: Pen casing; An electrosurgical unit includes a cutting head, an electrical connector, and a conductive component. The cutting head is movably mounted on the front end of the pen casing. The cutting head can rotate about the front-to-rear direction of the pen casing and can move along the front-to-rear direction of the pen casing. The electrical connector is installed at the tail end of the pen shell. The electrical connector includes electrical terminals that extend into the pen shell. The electrical terminals include common terminals, electrocoagulation terminals, and electrocution terminals that are spaced apart circumferentially along the pen shell. The conductive element is disposed inside the pen shell. One end of the conductive element is electrically connected to the cutting head and can move with the cutting head. The other end of the conductive element extends toward the electrical connector and has a contact portion. The cutting head is rotated so that the contact portion can be aligned with the common terminal and the electrocoagulation terminal, or aligned with the common terminal and the electrocutting terminal. When the working end of the cutter head is pressed to the target position, the cutter head is pressed to move toward the electrical connector so that the contact part can contact and connect the common terminal and the electrocoagulation terminal, or contact and connect the common terminal and the electrocutting terminal. The electrical contact points of the common terminal, the electrical contact points of the electrocoagulation terminal, and the electrical contact points of the electrocuting terminal form an equilateral triangle by connecting each pair of them, and the three points are located at the three endpoints of the equilateral triangle. The contact part can rotate around the center point of the equilateral triangle so that the two ends of the contact part are respectively aligned with the two adjacent electrical contact points. The electrosurgical unit also includes a movable component movably disposed within the pen housing. The movable component can rotate about the pen housing's head-to-tail direction as a rotation axis and can move along the pen housing's head-to-tail direction. One end of the movable component has a rotating part extending out of the pen housing's head end for user rotation. The cutting head is inserted into the rotating part. The other end of the movable component extends toward the electrical connector and has a strip-shaped groove. The conductive component includes a contact spring mounted on the movable component. One end of the contact spring is electrically connected to the cutting head, and the other end of the contact spring extends to the strip-shaped groove and extends along the strip-shaped groove to form the electrical contact part.

2. The pressure-triggered electrosurgical pen according to claim 1, characterized in that, The movable component has a sliding hole with its axis perpendicular to the head and tail direction of the pen shell. A movable positioning block is provided in the sliding hole. An elastic element is provided between the positioning block and the bottom wall of the sliding hole. The elastic element is adapted to force the positioning block to partially extend out of the sliding hole. Two first slots are provided circumferentially at intervals on the inner wall of the pen shell. When the positioning block rotates with the movable component, it can engage with one of the first slots to align the electrical contact part with the common terminal and the electrocoating terminal, or with the common terminal and the electrocuting terminal.

3. The pressure-triggered electrosurgical pen according to claim 2, characterized in that, The first slot is a strip extending along the head-to-tail direction of the pen shell, so that the positioning block can move along the head-to-tail direction of the pen shell with the movable part.

4. The pressure-triggered electrosurgical pen according to claim 2, characterized in that, The rotating part is provided with an arrow mark pointing to the tail end of the pen shell. The center line of the arrow mark is on the same plane as the axis of the sliding hole. The outer peripheral surface of the head end of the pen shell is provided with an electrocoating mark and an electrocutting mark that are aligned with the arrow mark. The electrocoating mark and the electrocutting mark correspond to the positions of the two first slots, respectively.

5. The pressure-triggered electrosurgical pen according to claim 4, characterized in that, The pen shell has a plug hole extending from the end of the pen shell. One end of the electrical connector has a plug portion that can be movably inserted into the plug hole. The electrical terminal is located in the plug portion. The outer periphery of the plug portion is provided with a second slot and a third slot at intervals along the direction away from the plug hole. The inner wall of the plug hole has an elastic protrusion that can engage with the second slot or the third slot. When the electrical connector is in the initial position, the elastic protrusion engages with the second slot, pushing the electrical connector toward the blade head so that the elastic protrusion engages with the third slot, thereby keeping the contact part in contact with the electrical terminal.

6. The pressure-triggered electrosurgical pen according to claim 1, characterized in that, A return spring is provided between the movable part and the pen shell, and the return spring is adapted to drive the blade to return to its original position when it is not pressed; a buffer spring is provided inside the electrical terminal, and the buffer spring is adapted to buffer the rigid contact between the electrical terminal and the contact part.

7. The pressure-triggered electrosurgical pen according to any one of claims 1 to 6, characterized in that, A light-transmitting plate is embedded on the outer peripheral surface of the pen shell, and an LED light panel is installed on the inner side of the light-transmitting plate. A circuit board is installed inside the electrical connector, and the electrical terminals and the LED light panel are electrically connected to the circuit board. Specifically, when the power receiving part is not connected to the electrical terminal, the LED light board does not emit light; when the power receiving part contacts and connects the common terminal and the electrocoagulation terminal, the circuit board controls the LED light board to emit a first light; when the power receiving part contacts and connects the common terminal and the electrocutting terminal, the circuit board controls the LED light board to emit a second light, and the colors of the first light and the second light are different.

8. A method of using the pressure-triggered electrosurgical pen according to claim 5, characterized in that, Includes the following steps: S100: When an electrocautery pen is required to perform an electrocautery operation, rotate the rotating part to align the arrow mark with the electrocautery mark, and then press the working end of the blade tip to the target position so that the blade tip moves toward the electrical connector, thereby enabling the contact part to contact and conduct the common terminal and the electrocautery terminal. S200: When an electric cutter is required to perform an electric cutting operation, rotate the rotating part to align the arrow mark with the electric cutting mark, and then press the working end of the cutter head to the target position so that the cutter head moves toward the electrical connector, thereby enabling the contact part to contact and connect the common terminal and the electric cutting terminal; S300: When the electrosurgical pen needs to be kept in electrocoagulation state, rotate the rotating part to align the arrow mark with the electrocoagulation mark, and then push the electrical connector towards the blade head to make the elastic protrusion engage with the third slot, thereby making the electrical contact part maintain contact and conduction with the common terminal and the electrocoagulation terminal; S400: When the electric cutter needs to maintain the electric cutting state, rotate the rotating part to align the arrow mark with the electric cutting mark, and then push the electrical connector towards the cutter head to make the elastic protrusion engage with the third slot, thereby making the electrical contact part maintain contact and conduction with the common terminal and the electric cutting terminal.

Images