Surgical instrument and surgical system

Abstract

A surgical instrument and a surgical system. The surgical instrument comprises a handle assembly, a jaw assembly, and a tube assembly. The tube assembly comprises a pull rod and a tube. A second fluid channel is formed between the outer peripheral wall of the pull rod and the inner peripheral wall of the tube. An opening communicated with the second fluid channel is formed at the position on the tube close to the jaw assembly. A first fluid channel is communicated with the second fluid channel and is used for being connected to a fluid delivery device so as to achieve a fluid path between the opening and the fluid delivery device.

Description

Surgical instruments and surgical systems

[0001] This application claims priority to the Chinese patent application filed with the China Patent Office on July 17, 2023, with application number 202310879522.2, and invention name “Surgical Instruments and Surgical Systems”, the entire contents of which are incorporated by reference into this application. Technical Field

[0002] The present application relates to the technical field of medical devices, and in particular to a surgical instrument and a surgical system. Background Art

[0003] Currently, minimally invasive surgery occupies an important position in surgical procedures, and surgical instruments are commonly used in minimally invasive surgery. In clinical surgical procedures, in addition to cutting or electrocoagulating biological tissue, other instruments are also required to cooperate with other operations. For example, during laparoscopic surgery, the smoke generated by surgical instruments will affect the surgical field of view and interfere with the doctor's operation. Traditional smoke removal methods usually require the use of a puncture device or flushing tube. During the smoke removal process, the surgical operation needs to be interrupted and new instruments need to be introduced to achieve it, which reduces the efficiency of the operation.

[0004] Summary of the Invention

[0005] In view of this, the present application proposes a surgical instrument and a surgical system.

[0006] A first aspect of the present application provides a surgical instrument comprising:

[0007] A handle assembly, comprising a handle for holding and a trigger capable of moving relative to the handle, wherein the handle is provided with a first fluid channel;

[0008] A forceps assembly comprising a first forceps head and a second forceps head, wherein the first forceps head and the second forceps head are capable of pivoting relative to each other to achieve opening or closing of the forceps assembly, and at least one of the first forceps head and the second forceps head is configured to process biological tissue;

[0009] a pliers tube assembly, comprising a pull rod and a pliers tube sleeved on the pull rod, for connecting the pliers head assembly and the handle; when the trigger moves relative to the handle, the pliers head assembly moves under the action of the pull rod in a kinematically coordinated relationship with the trigger, so that the first pliers head and the second pliers head pivot relative to each other;

[0010] In which, a second fluid channel is formed between the outer peripheral wall of the pull rod and the inner peripheral wall of the clamp tube, and an opening connected to the second fluid channel is provided on the clamp tube near the clamp head assembly. The first fluid channel is connected to the second fluid channel and is used to connect to the fluid conveying device to realize the fluid passage between the opening and the fluid conveying device.

[0011] A second aspect of the present application provides a surgical system, comprising a surgical energy host and the above-mentioned surgical instrument, wherein the surgical energy host is connected to the surgical instrument to provide energy to the surgical instrument.

[0012] As can be seen from the above technical solution, the surgical instrument proposed in this application provides a fluid path between the opening and the fluid delivery device by providing an opening in the clamp tube near the clamp head assembly and providing a first fluid channel and a second fluid channel within the instrument, thereby enabling fluid discharge, such as the discharge of smoke generated during surgery. This application can achieve tissue processing and fluid delivery functions through a single surgical instrument, reducing the need for instrument switching during surgery and the introduction of new instruments, thereby eliminating the need to interrupt surgical operations, improving surgical efficiency, shortening surgical time, and reducing the workload of the surgeon. BRIEF DESCRIPTION OF THE DRAWINGS

[0013] In order to more clearly illustrate the technical solutions of the embodiments of the present application, the following is a brief introduction to the drawings required for use in the description of the embodiments. Obviously, the drawings described below are some embodiments of the present application. For ordinary technicians in this field, other drawings can be obtained from these drawings without any creative work.

[0014] FIG1 is a schematic structural diagram of a surgical instrument proposed in an embodiment of the present application;

[0015] FIG2 is a schematic structural diagram of a handle assembly according to an embodiment of the present application;

[0016] FIG3 is a schematic cross-sectional view of the structure shown in FIG2 ;

[0017] FIG4 is a cross-sectional view of the clamp tube assembly near the clamp head assembly according to an embodiment of the present application;

[0018] FIG5 is a schematic cross-sectional view in the horizontal direction of the connection between the adapter structure and the second fluid channel in FIG1 ;

[0019] FIG6 is a schematic cross-sectional view in the vertical direction of the connection between the adapter structure and the second fluid channel in FIG1 ;

[0020] FIG7 is a partial enlarged schematic diagram of the structure shown in FIG6;

[0021] FIG8 is a schematic structural diagram of the forceps assembly of the surgical instrument proposed in an embodiment of the present application when opened, showing a cross-sectional view of the handle;

[0022] FIG9 is a schematic structural diagram of the closed forceps assembly of the surgical instrument according to an embodiment of the present application, showing a cross-sectional view of the handle;

[0023] FIG10 is a cross-sectional view of the handle of the surgical instrument according to an embodiment of the present application, showing a deformation of the switch structure;

[0024] FIG11 is a schematic structural diagram of the switch structure in a first state according to an embodiment of the present application;

[0025] FIG12 is a schematic structural diagram of the switch structure in the second state proposed in an embodiment of the present application;

[0026] FIG13 is a schematic structural diagram of a handle of a surgical instrument according to an embodiment of the present application, showing another variation of the switch structure;

[0027] FIG14 is a schematic structural diagram of the switch structure in the structure shown in FIG13 in a first state;

[0028] FIG15 is a schematic structural diagram of the switch structure in the structure shown in FIG13 in a second state;

[0029] FIG16 is a schematic diagram of the internal structure of the switch structure in the structure shown in FIG13.

[0030] Description of Reference Numerals: 100, surgical instrument; 10, handle assembly; 11, handle; 11a, upper side; 11b, lower side; 11c, front side; 11d, rear side; 111, main body; 1111, head; 1112, tail; 112, grip; 113, second limiting flange; 12, trigger; 121, connecting portion; 122, operating portion; 1221, inner hole; 123, rotating shaft; 13, rotating wheel; 131, extension portion; 132, first limiting ring groove; 133, first limiting flange; 134, second limiting ring groove; 20, clamp head assembly; 21, first clamp head; 22, second clamp head; 30, clamp tube assembly; 31, clamp tube; 31a, first insulating tube; 311, opening; 312, insulating layer; 313, front section; 32, pull rod; 32a, second insulating tube ;33. Second fluid channel;34. Connecting seat;40. Transfer structure;41. Inner cavity;42. First interface;421. First end;422. Second end;43. Second interface;44. First sealing ring;45. Sealing member;45a. Second sealing ring;46. Limiting member;461. Blocking portion;462. Covering portion;47. Abutting portion;50. First fluid channel;51. First section;52. Second section;60. Switch structure;61. Valve body;611. Resetting member;612. Connecting channel;613. First outlet;614. Second outlet;62. Switching member;63. Valve;631. Through hole;70. Function button. DETAILED DESCRIPTION

[0031] The following will be combined with the drawings in the embodiments of this application to clearly and completely describe the technical solutions in the embodiments of this application. Obviously, the embodiments described are part of the embodiments of this application, not all of them. Based on the embodiments in this application, all other embodiments obtained by ordinary technicians in this field without making creative efforts are within the scope of protection of this application.

[0032] It should also be understood that the terms used in this specification are for the purpose of describing specific embodiments only and are not intended to limit the present application. As used in this specification and the appended claims, the singular forms "a," "an," and "the" are intended to include the plural forms unless the context clearly indicates otherwise.

[0033] It should be further understood that the term "and / or" used in this specification and the appended claims refers to and includes any and all possible combinations of one or more of the associated listed items.

[0034] It should be noted that all directional indications in the embodiments of the present application (such as up, down, left, right, front, back, etc.) are only used to explain the relative position relationship, movement status, etc. between the various components in a certain specific posture. If the specific posture changes, the directional indication will also change accordingly.

[0035] At present, minimally invasive surgery occupies an important position in surgical operations, and surgical instruments are commonly used surgical instruments in minimally invasive surgery. In clinical surgical operations, in addition to the need to cut or electrocoagulate biological tissues, other instruments are also needed to cooperate with other operations. For example, during laparoscopic surgery, energy instruments, such as bipolar electrocoagulation, ultrasonic scalpels and other surgical instruments, will inevitably produce smoke during use. The smoke produced will affect the surgical field of view and interfere with the doctor's operation. Traditional smoke removal methods usually require the use of a puncture device or flushing tube for operation. During the smoke removal process, the surgical operation needs to be interrupted and new instruments need to be introduced to achieve it, thereby reducing the efficiency of the operation.

[0036] Therefore, the present application provides a surgical instrument, in which a first fluid channel and a second fluid channel are set inside the surgical instrument for transporting fluid, thereby reducing instrument switching during surgery, improving surgical efficiency, shortening surgery time, and reducing the doctor's workload.

[0037] Referring to Figures 1-4 , an embodiment of the present application provides a surgical instrument 100 comprising a handle assembly 10, a forceps assembly 20, and a clamp tube assembly 30. The handle assembly 10 comprises a handle 11 for gripping and a trigger 12 capable of moving relative to the handle 11. The handle 11 is provided with a first fluid channel 50. The forceps assembly 20 comprises a first forceps head 21 and a second forceps head 22. The first forceps head 21 and the second forceps head 22 are capable of pivoting relative to each other to open or close the forceps assembly 20. At least one of the first forceps head 21 and the second forceps head 22 is configured to perform biological tissue treatment. For example, the surgical instrument 100 provided in the embodiment of the present application can be a surgical instrument such as a bipolar coagulation device, a single-stage coagulation device with two forceps heads, an ultrasonic scalpel, or a stapler. The treatment of biological tissue can be performed by applying energy to the biological tissue, such as cutting through ultrasonic vibration or coagulation through bipolar or single-stage coagulation, or by performing treatment without applying energy to the biological tissue, such as suturing through a stapler.

[0038] The clamp tube assembly 30 includes a pull rod 32 and a clamp tube 31 sleeved outside the pull rod 32, which is used to connect the clamp head assembly 20 and the handle 11. The pull rod 32 and the trigger 12 have a motion-coordinated relationship. When the trigger 12 moves relative to the handle 11, the clamp head assembly 20 moves under the action of the pull rod 32 that has a motion-coordinated relationship with the trigger 12, so that the first clamp head 21 and the second clamp head 22 pivot relative to each other, thereby realizing the opening or closing of the clamp head assembly 30. When operating the surgical instrument 100, the operator can hold the handle 11 and extend the clamp head assembly 20 into the lesion site in the human body through the slender clamp tube assembly 30. Then, by operating the trigger 12 to move relative to the handle 11, the clamp head assembly 20 is driven to clamp the biological tissue in the preset area, so that the clamp head assembly 20 can process the biological tissue in the preset area without affecting other tissue areas.

[0039] Among them, a second fluid channel 33 is formed between the outer wall of the pull rod 32 and the inner wall of the clamp tube 31. The clamp tube 31 is provided with an opening 311 connected to the second fluid channel 33 near the clamp head assembly 20. The first fluid channel 50 is connected to the second fluid channel 33 and is used to connect with the fluid conveying device to realize the fluid passage between the opening 311 and the fluid conveying device.

[0040] The surgical instrument 100 proposed in the embodiment of the present application sets an opening 311 in the clamp tube 31 near the clamp head assembly 20, and realizes a fluid passage between the opening 311 and the fluid delivery device by setting the first fluid channel 50 and the second fluid channel 33 in the instrument, so as to discharge the fluid, such as the smoke generated during the operation. The present application can realize tissue processing and fluid delivery functions through a surgical instrument 100, reduce the instrument switching during the operation, and do not need to introduce new instruments, so there is no need to interrupt the surgical operation, improve the surgical efficiency, shorten the operation time, and reduce the workload of the doctor.

[0041] Optionally, the fluid delivery device may be at least one of a negative pressure source and a positive pressure source. For example, the negative pressure source may be a fan or other negative pressure device capable of generating a negative pressure airflow to discharge the fluid. The positive pressure source may be an input pump or other power device capable of generating a driving force to deliver the fluid.

[0042] In some usage scenarios, the fluid delivery device includes a first negative pressure source, and the first fluid channel 50 is used to connect to the first negative pressure source to exhaust smoke generated when the forceps assembly 20 applies energy to biological tissue through the opening 311. In this case, the fluid passage between the opening 311 and the fluid delivery device can be used to exhaust gas to prevent smoke generated during surgery from affecting the doctor's field of vision.

[0043] In other usage scenarios, the fluid delivery device may include a positive pressure source, and the first fluid channel may be connected to the positive pressure source to drive the cleaning fluid to be output to the forceps assembly 20 through the opening 311 to clean the biological tissue. Alternatively, the fluid delivery device may include a second negative pressure source, and the first fluid channel 50 may be connected to the second negative pressure source to discharge waste fluid from the forceps assembly 20 through the opening 311. In this case, the fluid passage between the opening 311 and the fluid delivery device can be used for the input and / or output of liquid.

[0044] Exemplarily, the surgical instrument 100 can be a bipolar coagulation forceps, the first forceps 21 and the second forceps 22 are both clamps, the first forceps 21 is connected to the positive pole of the power supply that supplies energy to the surgical instrument 100, and the second forceps 22 is connected to the negative pole of the power supply that supplies energy to the surgical instrument 100. The first forceps 21 and the second forceps 22 are respectively the positive and negative poles for applying electrical energy to biological tissue for electrocoagulation treatment.

[0045] Of course, the surgical instrument can also be a monopolar coagulation forceps, the first forceps 21 and the second forceps 22 are both clamps, and one of the first forceps 21 and the second forceps 22 is connected to the first level of the power supply that supplies energy to the surgical instrument.

[0046] Of course, the surgical instrument can also be an ultrasonic scalpel, in which case one of the first forceps 21 and the second forceps 22 is a clamp and the other is an ultrasonic scalpel head, which applies ultrasonic vibration to biological tissue to perform operations such as cutting or coagulation.

[0047] Of course, the surgical instrument can also be a stapler, in which case the first forceps 21 is a mounting base for the stapler on which suture staples are installed, and the second forceps 22 is a cutting knife for the stapler. The stapler can remove biological tissue through the cutting knife and suture the tissue through the suture staples at the same time.

[0048] In some embodiments, as shown in Figures 1 and 4, the pull rod 32 is hinged to the second jaw 22, and the second jaw 22 is hinged to the first jaw 21 via an insulating member, so that the second jaw 22 can rotate relative to the first jaw 21. In this embodiment, the jaw tube 31 can be connected to the first jaw 21 via a connecting seat 34, and when the pull rod 32 moves axially, it can drive the second jaw 22 to rotate relative to the first jaw 21, so that the jaw assembly 20 can be opened or closed. As shown in Figure 9, taking the doctor controlling the closing of the jaw assembly 20 as an example, when the doctor operates the trigger 12, the trigger 12 drives the pull rod 32 to move in the direction of the handle 11 within the jaw tube 31. The moving pull rod 32 pulls the second jaw 22 hinged thereto, causing the first jaw 21 and the second jaw 22 to rotate toward each other and close.

[0049] Optionally, the connecting seat 34 can be integrally formed with the clamp tube 31 or separately connected. For example, only one of the first clamp head 21 and the second clamp head 22 can rotate relative to the other, or both can rotate relative to the other to achieve opening or closing of the clamp head assembly 20.

[0050] As an embodiment, the first clamp head 21 is hingedly connected to the connecting base 34, and the first clamp head 21 is configured to rotate synchronously when the second clamp head 22 rotates, so as to cooperate with the rotation of the second clamp head 22 to open or close the clamp head assembly 20. In this embodiment, the first clamp head 21 can rotate synchronously with the first clamp head 22 to clamp biological tissue.

[0051] Of course, as another embodiment, the first clamp head 21 and the connecting seat 34 can be fixedly connected. At this time, the second clamp head 22 can rotate relative to the first clamp head 21, and the clamp head assembly 20 can also be opened or closed to clamp biological tissue.

[0052] In some embodiments, as shown in FIG4 , the clamp tube 31 is provided with an insulating layer 312 at least at the opening 311 to prevent leakage at the opening 311 during use of the surgical instrument 100. This strengthens insulation, avoids the risk of breakdown, and ensures electrical safety. In this embodiment, the insulating layer 312 can be a coating applied to the surface of the clamp tube 31 or can be silicone or other insulating material injection-molded onto the surface of the clamp tube 31 to prevent leakage at the opening 311.

[0053] In some embodiments, the clamp tube 31 is electrically connected to the first clamp head 21, and the pull rod 32 is electrically connected to the second clamp head 22, so that at least one of the first clamp head 21 and the second clamp head 22 is configured to apply energy from the surgical energy source to biological tissue. The clamp tube 31 and the pull rod 32 are relatively insulated from each other to ensure electrical safety. Optionally, the outer surface of the clamp tube 31 has a first insulating structure, and the outer surface of the pull rod 32 has a second insulating structure, thereby maintaining relative insulation between the clamp tube 31 and the pull rod 32.

[0054] As one embodiment, as shown in FIG4 , the first insulating structure may be a first insulating tube 31a disposed outside the clamp tube 31, through which the first clamp head 21 is connected to the positive terminal of a power supply supplying energy to the surgical instrument 100. The second insulating structure may be a second insulating tube 32a disposed outside the pull rod 32, through which the second clamp head 22 is connected to the negative terminal of the power supply supplying energy to the surgical instrument 100. This allows the first and second clamp heads 21, 22 to apply energy from the surgical energy source to biological tissue. The provision of the first and second insulating structures achieves insulation between the clamp tube 31 and the pull rod 32.

[0055] Specifically, since an opening 311 is provided on the clamp tube 31, a hole also needs to be punched at the corresponding position of the first insulating tube 31a. Surgical instruments such as bipolar coagulation and ultrasonic scalpels have compact structures and are prone to breakdown. Conductive body fluids are easily introduced during fluid delivery, causing insulation failure and instrument failure. Therefore, in order to strengthen insulation, the clamp tube 31 can be provided with an insulating layer 312 attached at least at the opening 311, thereby avoiding the risk of breakdown and ensuring electrical safety.

[0056] Of course, if the entire outer wall of the clamp tube 31 is attached with an insulating layer 312, there is no need to install the first insulating tube 31a. It can be understood that the second insulating structure outside the pull rod 32 can also be an insulating coating or silicone or other insulating materials injected on the surface of the pull rod 32.

[0057] In some embodiments, the attachment area of ​​the insulating layer 312 on the clamp tube 31 extends from the outer peripheral wall of the opening 311 through the opening 311 to the inner peripheral wall of the opening 311, so as to prevent leakage at the opening 311, thereby strengthening insulation and ensuring electrical safety.

[0058] In some embodiments, as shown in Figure 4, the clamp tube 31 includes a front section 313 close to the clamp head assembly 20, and the opening 311 is provided in the front section 313. The attachment area of ​​the insulating layer 312 extends from the outer peripheral wall of the front section 313 through the opening 311 to the inner peripheral wall of the front section 313 to enhance insulation.

[0059] Optionally, the insulating layer 312 may be attached to the clamp tube 31 only near the opening 311, or the insulating layer 312 may be attached to a section of the clamp tube 31 near the clamp head assembly 20 where the opening 311 is provided, that is, the outer peripheral wall of the front section 313 and the inner peripheral wall near the opening 311. During processing, the front section 313 of the clamp tube 31 can be placed in the spraying area to facilitate processing.

[0060] In some embodiments, as shown in Figures 1 and 4, the clamp tube 31 is provided with a plurality of openings 311, which are arranged in an array on the clamp tube 31. In this embodiment, the arrangement of the plurality of openings 311 in an array can improve fluid delivery efficiency.

[0061] Alternatively, the plurality of openings 311 may be arranged linearly, rectangularly, or in a diamond pattern along the axis of the clamp tube 31, or may be arranged in an array around the clamp tube 31. This arrangement of the plurality of openings 311 creates a compact structure, allowing the fluid to be centrally directed to the second fluid channel 33, thereby improving fluid delivery efficiency.

[0062] Of course, in other embodiments, the plurality of openings 311 may also be arranged obliquely, or in other arrangements.

[0063] In some embodiments, the shapes of the plurality of openings 311 on the clamp tube 31 may be the same or different, and may be circular, square, diamond, or other irregular shapes.

[0064] In some embodiments, the sizes of the multiple openings 311 on the clamp tube 31 may be the same or different.

[0065] In some embodiments, the insulating layer 312 may cover a length of 2% to 20% of the axial length of the clamp tube 31 in the axial direction of the clamp tube 31. In this embodiment, if the insulating layer 312 covers an excessively large area, costs will increase, while if the covering area is too small, sufficient coverage may be insufficient. Therefore, the insulating layer 312 is set to cover an area within the aforementioned range, ensuring sufficient coverage and improving electrical safety while also controlling the coverage area and reducing manufacturing costs.

[0066] Exemplarily, the length of the insulating layer 312 covering the clamp tube 31 can be 2%, 3%, 4%, 5%, 6%, 7%, 8%, 9%, 10%, 11%, 12%, 13%, 14%, 15%, 16%, 17%, 18%, 19% or 20% of the axial length of the clamp tube 31.

[0067] In some embodiments, the insulating layer 312 may be a coating formed using a thin film deposition process. In this embodiment, the insulating layer 312 may be formed using a thin film deposition process. This process allows for ionization under vacuum, where positive and negative ions combine to form strong chemical bonds. These particles are then centrifuged into atomic particles, which are then impacted by an electric field onto the clamp 31, where they form a dense, densely packed mass, resulting in a strong bond.

[0068] Exemplarily, thin film deposition processes include physical vapor deposition (PVD) and chemical vapor deposition (CVD). The main methods of physical vapor deposition include vacuum evaporation, sputtering coating, arc plasma coating, ion plating and molecular beam epitaxy. Chemical vapor deposition technology is a process that uses gaseous substances to produce chemical reactions and transport reactions on solids and produce solid deposits.

[0069] In other embodiments, the insulating layer 312 may also be a coating formed using a spraying process. In this embodiment, the spraying process includes thermal spraying and cold spraying. Thermal spraying involves heating and melting the coating material, atomizing it into extremely fine particles using a high-speed airflow, and spraying it onto the workpiece surface at a high speed to form a coating. Cold spraying involves spraying coating powder onto the substrate using a supersonic gas-solid two-phase airflow at room temperature or a lower temperature to form a dense coating.

[0070] For example, when processing the insulating layer 312, the spraying area or the coating area can be limited to the front section 313 of the clamp tube 31 where the opening 311 is provided. The paint or coating material will enter the interior of the clamp tube 31 from the opening 311, so that the outer peripheral wall of the front section 313 of the clamp tube 31, the inner wall of the opening 311 and the inner peripheral wall of the front section 313 near the opening 311 can all be adhered with the insulating layer 312 to enhance insulation.

[0071] Of course, in other embodiments, the insulating layer 312 may also be formed using other processes, such as coating, dipping, spraying, brushing, drying, melting, laser curing, UV curing, anodizing, electroplating, thick-film high-velocity oxygen flame plasma, and other suitable material application techniques. The processing technique used should be sufficient to form the insulating layer 312 on the surface of the clamp tube 31 to enhance insulation. The coating can be completed in a single application or multiple applications.

[0072] In some embodiments, the thickness of the insulating layer 312 is 1 μm to 200 μm. When the insulating layer 312 is a coating formed by a thin film deposition process, the thickness of the insulating layer 312 is 1 μm to 10 μm. For example, the thickness of the insulating layer 312 can be 1 μm, 2 μm, 3 μm, 4 μm, 5 μm, 6 μm, 7 μm, 8 μm, 9 μm, or 10 μm. When the insulating layer 312 is a coating formed by a spray coating process, the thickness of the insulating layer 312 is 10 μm to 200 μm. Exemplarily, the thickness of the insulating layer 312 may be 10 μm, 20 μm, 30 μm, 40 μm, 50 μm, 60 μm, 70 μm, 80 μm, 90 μm, 100 μm, 110 μm, 120 μm, 130 μm, 140 μm, 150 μm, 160 μm, 170 μm, 180 μm, 190 μm or 200 μm.

[0073] In some embodiments, the material of insulating layer 312 includes, but is not limited to, at least one of polytetrafluoroethylene (PTFE) and diamond-like carbon (DLC). In this embodiment, insulating layer 312 is made of polytetrafluoroethylene, which is corrosion-resistant and wear-resistant. Insulating layer 312 is made of diamond-like carbon, which combines the advantages of diamond and graphite, with high hardness, high resistivity, good optical properties, and excellent tribological properties.

[0074] It should be noted that the surgical instrument 100 of the present application is not limited to the use of the clamp tube 31 and the pull rod 32 for conduction. For example, in other embodiments, the clamp tube 31 and the pull rod 32 are insulated, and the surgical instrument 100 may also include a first wire and a second wire, the first wire is electrically connected to the first clamp head 21, and the second wire is electrically connected to the second clamp head 22, so that at least one of the first clamp head 21 and the second clamp head 22 is configured to be able to apply energy from the surgical energy host to biological tissue.

[0075] Exemplarily, the first wire and the second wire can be routed in the second fluid channel 33 , rationally utilizing space and reducing the volume of the surgical instrument 100 .

[0076] For example, in other embodiments, the pull rod 32 includes a first conductive unit and a second conductive unit that are independent of each other, the first conductive unit is electrically connected to the first clamp 21, and the second conductive unit is electrically connected to the second clamp 22, so that at least one of the first clamp 21 and the second clamp 22 is configured to apply energy from the surgical energy host to biological tissue.

[0077] In some embodiments, as shown in Figures 3, 5, and 7, the surgical instrument 100 further includes a transition structure 40, which is used to seal and connect the first fluid channel 50 and the second fluid channel 33 to establish a fluid passage between the opening 311 and the fluid delivery device. In this embodiment, the provision of the transition structure facilitates the connection between the first fluid channel 50 and the second fluid channel 33 to achieve fluid delivery.

[0078] In some embodiments, as shown in Figures 5-7, the adapter structure 40 includes an inner cavity 41 and a first interface 42 and a second interface 43 in communication with the inner cavity 41. The first interface 42 is used to seal the connection between the inner cavity 41 and the first fluid channel 50, and the second interface 43 is used to seal the connection between the inner cavity 41 and the second fluid channel 33. In this embodiment, the above arrangement can guide the fluid entering the second fluid channel 33 into the inner cavity 41 through the second interface 43, and then into the first fluid channel 50 through the first interface 42 and be discharged through the negative pressure source, or guide the fluid input through the positive pressure source to be input through the opening 311, thereby preventing fluid leakage.

[0079] In some embodiments, as shown in Figures 1, 5, and 6, the handle assembly 10 further includes a rotating wheel 13. The rotating wheel 13 is mounted on the end of the clamp tube 31 away from the forceps head assembly 20, and the rotating wheel 13 is capable of driving the clamp tube 31 to rotate coaxially. The rotating wheel 13 has an extension 131. The pull rod 32 extends from the clamp tube 31 and passes through the extension 131 and the adapter structure 40. The second interface 43 is sealedly connected to the extension 131, thereby connecting the second fluid channel 33 to the inner cavity 41. In this embodiment, the provision of the rotating wheel 13 facilitates the doctor's adjustment of the angle of the forceps head assembly 20. The sealed connection between the extension 131 and the second interface 43 ensures that the rotation of the rotating wheel 13 does not affect the input or output of fluid.

[0080] In some embodiments, the adapter structure 40 is integrally formed with the handle 11. In this embodiment, the adapter structure 40 can be integrally formed with the handle 11, so that the adapter structure 40 is structurally stable.

[0081] Of course, in other embodiments, the adapter structure 40 can also be processed separately and installed on the handle 11. Specifically, it can be installed inside the handle 11 and connected to the extension 131 of the rotating wheel 13 by means of a snap connection and / or a threaded connection and / or an interference fit connection, or it can be directly placed inside the handle 11 and connected to the extension 131 of the rotating wheel 13, thereby facilitating the disassembly of the adapter structure 40.

[0082] For example, the rotating wheel 13 is rotatably provided on the handle 11 and is located at the end of the clamp tube 31 away from the clamp head assembly 20. When the rotating wheel 13 drives the clamp tube 31 to rotate under the action of external force, the adapter structure 40 is fixed in position and does not rotate therewith, so as to facilitate the doctor to adjust the angle of the clamp head assembly 20 without affecting the input or discharge of the fluid.

[0083] For example, as shown in FIG6 , the length of the jaw tube 31 extending into the handle 11 can be shorter than the length of the extension portion 131 extending into the handle 11. In this way, the gap formed between the portion of the outer wall of the extension portion 131 and the inner wall of the extension portion 131 formed after the pull rod 32 extends out of the jaw tube 31 also constitutes part of the second fluid passage 33. Of course, the end of the jaw tube 31 extending into the handle 11 can also be flush with the end of the extension portion 131.

[0084] In some embodiments, the second interface 43 elastically abuts against the extension 131, so that when the rotating wheel 13 rotates, the second interface 43 maintains a sealed fit with the extension 131. In this embodiment, the above arrangement is adopted to achieve a sealed fit between the second interface 43 and the extension 131 when the rotating wheel 13 rotates, maintaining airtightness without affecting the rotation of the rotating wheel 13. In addition, the frictional force can form a damping effect, thereby facilitating the adjustment of the angle of the pliers head assembly 20.

[0085] In some embodiments, as shown in Figures 6 and 7, one of the second interface 43 and the extension portion 131 is sleeved within the other of the second interface 43 and the extension portion 131 to achieve a sealed fit between the second interface 43 and the extension portion 131. In this embodiment, the second interface 43 can be sleeved within the extension portion 131 (as shown in Figure 7), or the extension portion 131 can be sleeved within the second interface 43, thereby facilitating a sealed connection between the two and maintaining airtightness.

[0086] In some embodiments, at least one of the second interface 43 and the extension portion 131 is an elastic structure. In this embodiment, the second interface 43 can be set as an elastic structure, or the extension portion 131 can be set as an elastic structure, so that the second interface 43 and the extension portion 131 can achieve interference fit through elastic abutment to form a seal.

[0087] It should be noted that the second interface 43 or the extension portion 131 may also be configured as a hard structure rather than an elastic structure to enhance structural strength and stability. For example, in other embodiments, as shown in Figures 6 and 7, the adapter structure 40 further includes a first sealing ring 44, and the second interface 43 elastically abuts against the extension portion 131 via the first sealing ring 44. In this embodiment, the second interface 43 is a hard structure, and the first sealing ring may be made of an elastic material to achieve elastic abutment between the inner circumferential wall of the second interface 43 and the outer circumferential wall of the extension portion 131 to form a seal.

[0088] In some embodiments, as shown in Figures 6 and 7, the adapter structure 40 further includes a seal 45. The pull rod 32 is disposed through the adapter structure 40 and extends from the seal 45 to be movably coupled with the trigger 12. The seal 45 seals against the pull rod 32. In this embodiment, the provision of the seal 45 prevents fluid from leaking from the gap between the adapter structure 40 and the pull rod 32 disposed through the adapter structure 40.

[0089] In some embodiments, the seal 45 is an elastic structure. The adapter structure 40 seals against the pull rod 32 via the elastic seal 45, ensuring airtightness between the pull rod 32 and the adapter structure 40 when the pull rod 32 moves axially along the clamp tube 31. In this embodiment, the seal 45 can be integrally formed with the adapter structure 40, in which case the entire adapter structure 40 can be an elastic structure. Alternatively, the seal 45 can be separately mounted on a separate component of the adapter structure 40. In this case, the adapter structure 40 is a rigid structure to enhance structural strength and stability.

[0090] For example, the hard structure mentioned in the embodiments of the present application may be made of hard plastic, hard metal or the like, and the elastic material may be made of silicone, TPE, TPU, PVC, rubber or the like.

[0091] In some embodiments, as shown in Figures 6 and 7 , when the transition structure is rigid, the seal 45 can be a second sealing ring 45a. The transition structure 40 also includes a stopper 46. The second sealing ring 45a is sleeved over the pull rod 32 to form a sealed fit between the pull rod 32 and the transition structure 40. The stopper 46 is used to limit the axial displacement of the second sealing ring 45a in the jaw tube 31, preventing the second sealing ring 45a from moving with the pull rod 32 when the pull rod 32 moves axially along the jaw tube 31. In this embodiment, the second sealing ring 45a can be a sealing rubber ring. The second sealing ring 45a is provided to elastically abut the pull rod 32 and the transition structure 40 to form a seal. Since the pull rod 32 moves axially along the jaw tube 31, the stopper 46 is provided to prevent the second sealing ring 45a from shifting and affecting the airtightness.

[0092] In some embodiments, as shown in Figures 6 and 7, the transition structure 40 is further provided with an abutment portion 47 and a hollow area for accommodating the second sealing ring 45a. The inner cavity 41 is separated from the hollow area by the abutment portion 47. The abutment portion 47 is used to abut the side of the second sealing ring 45a facing the inner cavity 41. The stopper 46 is used to be inserted into the hollow area and abut the side of the second sealing ring 45a facing away from the inner cavity 41. In this embodiment, the provision of the stopper 46 and the abutment portion 47 can confine the second sealing ring 45a between the stopper 46 and the abutment portion 47, thereby better preventing the second sealing ring 45a from shifting and affecting the airtightness.

[0093] In some embodiments, as shown in Figures 6 and 7, the stopper 46 includes a blocking portion 461. The outer diameter of the blocking portion 461 is adapted to fit within the hollow area of ​​the adapter structure 40. The blocking portion 461 is configured to be inserted into the hollow area of ​​the adapter structure 40 and abut against the side of the second sealing ring 45a facing away from the inner cavity 41. Furthermore, the blocking portion 461 abuts between the inner circumferential wall of the hollow area and the outer circumferential wall of the pull rod 32. In this embodiment, the provision of the blocking portion 461 not only limits the second sealing ring 45a and prevents its position from shifting, but also allows for a better seal between the adapter structure 40 and the pull rod 32, thereby enhancing the sealing effect.

[0094] In some embodiments, as shown in Figures 6 and 7, the stopper 46 further includes a capping portion 462 connected to the blocking portion 461. The capping portion 462 abuts against the periphery of the end of the adapter structure 40 that faces away from the inner cavity. In this embodiment, the provision of the capping portion 462 facilitates operation by the physician, who can manipulate the capping portion 462 to insert or withdraw the blocking portion 461 into or out of the hollow area of ​​the adapter structure 40, thereby facilitating assembly and disassembly of the stopper 46.

[0095] In some embodiments, as shown in Figures 6 and 7, a first limiting ring groove 132 can be provided in one of the extension portion 131 and the second interface 43 to accommodate the first sealing ring 44, thereby facilitating the positioning of the first sealing ring 44. When the wheel 13 rotates, the first sealing ring 44 can also maintain elastic contact between the extension portion 131 and the second interface 43 without positional displacement.

[0096] In some embodiments, as shown in FIG6 and FIG7 , the outer peripheral wall of the extension portion 131 is further provided with a first limiting convex edge 133 , and when the second interface 43 is sleeved on the extension portion 131 , the end portion abuts against the first limiting convex edge 133 to play a positioning role.

[0097] In some embodiments, as shown in Figures 6 and 7, a second limiting ring groove 134 can be provided on one of the extension portion 131 and the handle 11, and a second limiting protrusion 113 can be provided on the other of the extension portion 131 and the handle 11. The second limiting protrusion 113 is clamped in the second limiting ring groove 134, and the second limiting protrusion 113 can rotate relative to the second limiting ring groove 134, so that the rotating wheel 13 can drive the extension portion 131 to rotate relative to the adapter body 41 without axial position displacement.

[0098] In some embodiments, as shown in FIG6 , the pull rod 32 is driven by the trigger 12 to move axially to drive the pliers head assembly 20 to open or close, wherein the second interface 43 extends along the axial direction of the pull rod 32, and the extension direction of the first interface 42 is set at an angle to the axial direction of the pull rod 32. In this embodiment, since the pull rod 32 needs to move axially to drive the pliers head assembly 20 to open or close, space needs to be reserved in the axial direction of the pull rod 32 inside the handle 11 for the axial movement of the pull rod 32. The above-mentioned arrangement allows the first interface 42 to be tilted to avoid the axial area of ​​the pull rod 32, thereby avoiding interference with the axial movement of the pull rod 32. In addition, the idle area inside the handle 11 can be reasonably utilized, resulting in a compact structure and conducive to miniaturization of the instrument.

[0099] In some embodiments, as shown in Figure 7, the first interface 42 has a first end 421 facing the pliers assembly 20 and a second end 422 opposite to the first end 421. The first end 421 is connected to the inner cavity 41. In order to adapt to the internal space of the handle 11, the second end 422 is inclined in a direction away from the pull rod 32 and is connected to the first fluid channel 50 extending outside the handle 11.

[0100] In some usage scenarios, as shown in Figures 2, 6, and 8, the handle 11 has a main body 111 located at an upper side 11a and a gripping portion 112 located at a lower side 11b. The jaw assembly 30 is connected to the main body 111, and the second end 422 is tilted toward the gripping portion 112. In this embodiment, the handle 11 has a front side 11c proximal to the jaw assembly 20 and a rear side 11d distal to the jaw assembly 20. The second end 422, i.e., the end of the first interface 42 distal to the jaw assembly 20, is tilted and extended away from the gripping portion 112 to connect with the first fluid channel 50. This extends diagonally rearward, without affecting the axial movement of the pull rod 32. This facilitates the guidance of fluid toward the gripping portion 112. At this point, the first fluid channel 50 can extend beyond the gripping portion 112 to communicate with the fluid delivery device, facilitating fluid delivery.

[0101] Of course, in other embodiments, the first interface 42 may also extend in other directions and may be staggered with the pull rod 32 .

[0102] In some embodiments, the first fluid channel 50 is a hose structure, the fluid delivery device is a negative pressure source, one end of the hose structure is connected to the first interface 42, and the other end of the hose structure extends outside the handle 11 and is connected to the negative pressure source to discharge the smoke generated when the forceps assembly 20 applies energy to biological tissue through the opening 311. In this embodiment, the fluid passage between the opening 311 and the negative pressure source can be used to discharge the smoke generated by the instrument during surgery to prevent the smoke from affecting the doctor's surgical field of view. The first fluid channel 50 adopts a hose structure so that it can bend and extend within the handle 11, adapt to the internal space of the handle 11, and extend outside the handle 11 at a preset position to facilitate the discharge of smoke generated by the surgical instrument 100.

[0103] In some embodiments, as shown in Figures 3, 8, and 10, one end of the first fluid channel 50 communicates with the second fluid channel 33, while the other end of the first fluid channel 50 extends from the bottom of the grip 11. In this embodiment, one end of the first fluid channel 50 communicates with the second fluid channel 33 at the main body 111, while the other end of the first fluid channel 50 extends from the bottom of the grip 112. The adapter structure 40 is disposed within the main body 111, extending the first fluid channel 50 from the bottom of the grip 112 without interfering with the physician's operation and enhancing the overall aesthetics of the handle 11.

[0104] It should be noted that the extension position of the first fluid channel 50 is not limited to the bottom of the handle 11, and can also be any other position on the handle 11 as long as it does not affect the use of the instrument and the doctor's operation.

[0105] In some embodiments, as shown in Figures 8 to 15, the surgical instrument 100 further includes a switch structure 60. The switch structure 60 is configured to switch between a first state and a second state and act on the fluid passage between the opening 311 and the fluid delivery device. When the switch structure 60 is in the first state, the fluid passage is in an on state, and when the switch structure 60 is in the second state, the fluid passage is in a closed state. In this embodiment, the on-off state of the fluid passage can be adjusted by setting the switch structure 60, thereby helping the doctor to quickly control the opening and closing of fluid delivery. This allows the doctor to control the conduction of the fluid passage when smoke exhaust or other fluid delivery is required to exhaust smoke or deliver other fluids, and to control the fluid passage to be cut off when smoke exhaust or other fluid delivery is not required, thereby reducing energy consumption and saving resources.

[0106] For example, when performing an operation such as electrocoagulation or cutting, that is, when the surgical instrument 100 is in an activated state and produces smoke, the doctor can open the switch structure 60 to open the fluid path, thereby discharging the smoke generated when the surgical instrument 100 is activated. When the operation is completed and no smoke is generated, the doctor can close the switch structure 60 to block the fluid path.

[0107] Optionally, the switch structure 60 may also have a transition state between the first state and the second state, that is, it may gradually switch through the transition state when switching between the first state and the second state. Of course, the switch structure 60 may also have no transition state between the first state and the second state, that is, it may switch directly from the first state to the second state or directly from the second state to the first state.

[0108] Optionally, since the first fluid channel 50 is used to connect to a fluid delivery device, a switch structure 60 can be provided to act on the first fluid channel 50 to facilitate opening or closing the fluid channel by controlling the on / off state of the first fluid channel 50. Of course, in other embodiments, the switch structure 60 can also act on other locations of the fluid channel.

[0109] In some embodiments, as shown in Figures 8-12, a switch structure 60 is provided on the handle 11. The switch structure 60 includes a valve body 61 and a switch element 62. The valve body 61 is provided within the first fluid passage 50 and is embedded within the handle 11. When the switch structure 60 is in the second state, the valve body 61 is closed, thereby switching the first fluid passage 50 between an on and a off state. One end of the switch element 62 is connected to the valve body 61, and the other end of the switch element 62 extends out of the housing of the handle 11. The end of the switch element 62 extending from the housing of the handle 11 is used to receive a force to drive the switch element 62 to move relative to the handle 11 between a first position and a second position. When the switch element 62 moves to the first position, it drives the switch structure 60 to the first state. When the switch element 62 moves to the second position, it drives the switch structure 60 to the second state. In this embodiment, the switch element 62 receives the applied force to drive the valve body 61 to open or close, thereby switching the switch structure 60 between the first and second states, thereby facilitating the on / off regulation of the first fluid passage 50.

[0110] In some embodiments, as shown in Figures 8-9 , the handle 11 comprises a main body 111 and a gripping portion 112, with the jaw assembly 30 connected to the main body 111. The trigger 12 comprises a connecting portion 121 and an operating portion 122. The connecting portion 121 is rotatably disposed within the main body 111 and interferes with the pull rod 32 within the main body 111, such that rotation of the connecting portion 121 drives the pull rod 32 along the axial direction of the jaw assembly 30. The operating portion 122 is located outside the handle 11 and is disposed opposite the gripping portion 112. The operating portion 122 can be driven by the connecting portion 121 to move closer to or further from the gripping portion 112. The end of the switch member 62 extending from the housing of the handle 11 is located in the motion path of the operating portion 122. When the operating portion 122 moves toward the grip portion 112, it acts on the switch member 62 to drive the switch structure 60 to switch to a first state, thereby placing the first fluid channel 50 in an open state. When the operating portion 122 moves away from the grip portion 112, it acts on the switch member 62 to drive the switch structure 60 to switch to a second state, thereby placing the first fluid channel 50 in a closed state. In this embodiment, through the above-described method, the switch structure 60 is configured to be triggered to adjust the opening and closing of the first fluid channel 50 when the trigger 12 moves relative to the handle 11. By linking the opening and closing of the switch structure 60 with the movement of the trigger 12, the surgeon can control the switch structure 60 while operating the trigger 12 to drive the forceps assembly 20 to act on biological tissue, thereby reducing the surgeon's operating steps and improving surgical efficiency. The valve body 61 can be opened or closed to adjust the opening and closing of the first fluid channel 50. One end of the switch member 62 is connected to the valve body 61, and the other end of the switch member 62 extends out of the handle 11 and is located on the movement path of the trigger 12. When the trigger 12 moves relative to the handle 11 under the drive of external force, it contacts the switch member 62 to trigger the switch member 62 to control the opening or closing of the valve body 61, so that the doctor can control the opening and closing of fluid delivery more quickly, thereby reducing the doctor's operating steps and improving surgical efficiency.

[0111] The connecting portion 121 is the portion of the trigger 12 that interferes with the pull rod 32, while the operating portion 122 is the portion extending from the handle 11 for operation by the physician. In specific embodiments, the connecting portion 121 and the operating portion 122 are merely used to distinguish the functions of the overall form. In practice, the connecting portion 121 and the operating portion 122 can be an integrally formed structure or two separate, interconnected components. The functional division of the connecting portion 121 and the operating portion 122 of the trigger 12 described in this specification is not to be construed as constituting separate components.

[0112] For example, the connecting portion 121 and the operating portion 122 may be integrally formed, so that the structure of the trigger 12 is more stable and reliable, and is easy to process, thereby reducing the cost of use.

[0113] Optionally, as shown in Figures 8 and 9, the switch member 62 extends from the side of the grip portion 112 toward the operating portion 122. When the operating portion 122 approaches the grip portion 112, it can squeeze the switch member 62 so that the switch member 62 moves to the first position in the direction of being retracted into the handle 11. When the operating portion 122 is away from the grip portion 112, it can be separated from the switch member 62. At this time, the switch member 62 can move to the second position to trigger the switch member 62 to control the opening or closing of the valve body 61, so that the switch structure 60 switches between the first state and the second state.

[0114] In some embodiments, as shown in Figures 11 and 12, when the operating portion 122 squeezes the switch member 62 toward the grip portion 112, the valve body 61 is opened by the switch member 62. When the operating portion 122 grip portion 112 is separated from the switch member 62, the switch member 62 can be reset to close the valve body 61.

[0115] For example, as shown in Figures 8 and 9, the pull rod 32 moves along the front-to-back direction of the handle 11, and the trigger 12 is located in front of the gripping portion 112. The gripping portion 112 is used for the doctor to hold. The doctor's palm holds the gripping portion 112, and the finger is placed on the operating portion 122 of the trigger 12 to control the operating portion 122 to perform the expansion operation and the retraction operation. The retraction operation is to control the operating portion 122 to be close to the gripping portion 112, so that the connecting portion 121 can be driven to rotate backward to drive the pull rod 32 to move backward, so that the pliers head The assembly 20 closes to clamp the tissue, and at the same time, the operating part 122 can press the switch part 62 to open the valve body 61, so that the first fluid channel 50 is conductive. When the doctor's finger controls the operating part 122 to perform the expansion operation, that is, controls the operating part 122 to move away from the gripping part 112, it can drive the connecting part 121 to rotate forward, thereby driving the pull rod 32 to move forward, so that the pliers head assembly 20 opens, and at the same time, the operating part 122 can move away from the switch part 62 to close the valve body 61, thereby cutting off the first fluid channel 50.

[0116] Optionally, an elastic member may be provided in the handle 11 to reset the pliers assembly 20 to the open state.

[0117] As an embodiment, the elastic member can be set at the end of the pull rod 32 away from the pliers head assembly 20. At this time, the elastic member can be a compression spring extending axially along the pull rod 32. When the pull rod 32 moves backward to drive the pliers head assembly 20 to close, the spring is squeezed. When the doctor releases the operating part 122 of the trigger 12, the elastic force of the compression spring can act on the pull rod 32, causing the pull rod 32 to move forward to drive the pliers head assembly 20 to reset to the open state.

[0118] As another embodiment, as shown in Figures 8-10, the elastic member can also be set at the hinge point between the connecting portion 121 and the main body 111. For example, the connecting portion 121 is hinged to the main body 111 through the rotating shaft 123. At this time, the elastic member can adopt a torsion spring set on the rotating shaft 123, or the elastic member can be set on the movement path of the connecting portion 121. When the doctor releases the operating portion 122 of the trigger 12, the elastic force of the torsion spring can act on the connecting portion 121, so that the connecting portion 121 drives the pull rod 32 to move forward to drive the pliers head assembly 20 to reset to the open state.

[0119] Optionally, the side of the gripping portion 112 facing the operating portion 122 can be used to limit the extreme position of the operating portion 122 rotating toward the handle 11, so that the forceps assembly 20 can clamp the tissue with an appropriate clamping force to avoid unnecessary damage to the tissue due to excessive clamping force. Of course, other stop structures can also be provided in the gripping portion 112 to limit the extreme position of the operating portion 122 or the connecting portion 121 rotating toward the handle 11.

[0120] Of course, in other embodiments, it can also be set that when the operating part 122 squeezes the switch part 62 toward the holding part 112, the valve body 61 is closed by the switch part 62, and when the operating part 122 holding part 112 is separated from the switch part 62, the switch part 62 can open the valve body 61.

[0121] Alternatively, in other embodiments, it may be configured that when the operating portion 122 squeezes the switch member 62 for the first time, the valve body 61 is opened by the switch member 62 , and when the operating portion 122 squeezes the switch member 62 again, the valve body 61 is closed by the switch member 62 .

[0122] As an embodiment, as shown in Figures 11 and 12, the valve body 61 is the part that acts on the first fluid channel 50. A switch valve provided with a valve 63 can be used. The first fluid channel 50 is opened and closed by driving the valve 63 to block or open the preset position of the first fluid channel 50. At this time, the switch element 62 serves as the part that receives the force. The force applied from the outside can act on the switch element 62 to switch the switch structure 60 between the first state and the second state, so as to drive the valve 63 to block or open the preset position of the first fluid channel 50.

[0123] For example, as shown in Figures 8, 9, 11 and 12, the first fluid channel 50 is divided into a first section 51 and a second section 52 by the arrangement of the valve body 61. The first section 51 is communicated with the second fluid channel 33 through the adapter structure 40, and the second section 52 extends out of the handle 11 and is communicated with the fluid delivery device. The valve body 61 can have two interfaces, and the two interfaces of the valve body 61 are respectively connected to the first section 51 and the second section 52. One end of the switch member 62 is connected to the valve 63 in the valve body 61 and can drive the valve 63 to move in the valve body 61. The other end of the switch member 62 extends out of the handle 11 and is located on the movement path of the trigger 12. In the initial state, the switch member 62 is , the valve body 61 is closed. When the operating portion 122 of the trigger 12 moves to the gripping portion 112 close to the handle 11, it squeezes the protruding end of the switch member 62 to push the end of the switch member 62 located in the valve body 61 to move to the first position, thereby driving the valve 63 to move to make the valve body 61 conductive, thereby making the first fluid channel 50 conductive. A reset member 611, such as a spring, can be provided in the valve body 61. When the operating portion 122 of the trigger 12 moves to separate from the switch member 62, the reset member 611 can provide elastic force to push the switch member 62 to the second position, so that the switch member 62 drives the valve 63 to return to the closed valve body 61, thereby cutting off the first fluid channel 50.

[0124] As another embodiment, the valve body 61 is the part that acts on the first fluid channel 50, and can be a clamping structure. The first fluid channel 50 is clamped or loosened to realize the opening and closing of the first fluid channel 50. At this time, the switch element 62 serves as the part that receives the force. The force applied from the outside can act on the switch element 62 to drive the valve body to open or close, so as to realize the clamping or loosening of the first fluid channel 50.

[0125] The valve body 61 is the portion of the switch structure 60 that acts on the fluid passage, while the switch element 62 is the force-bearing unit. In this embodiment, the valve body 61 and switch element 62 are used only to distinguish the functions of the overall structure. In practice, the valve body 61 and switch element 62 can be an integrally formed structure or two separate, interconnected components. The functional division of the valve body 61 and switch element 62 in this specification is not to be construed as representing separate components. The description of the valve body 61 and switch element 62 in this specification serves only to explain the switch structure 20, the fluid passage, and the force applied.

[0126] For example, as shown in Figures 2, 3 and 10, the operating part 122 of the trigger 12 can be in a closed loop state, having an inner hole 1221 for a finger to be inserted into, and the inner wall of the front side 11c and the inner wall of the rear side 11d of the inner hole 1221 can be provided with an arc structure that fits the finger, so that the doctor's finger can rest against it, thereby facilitating the expansion or retraction operation of the operating part 122.

[0127] It should be noted that the switch structure 60 mounted on the handle 11 may not be in a kinematically coordinated relationship with the trigger 12. For example, in some other embodiments, as shown in FIG10 , the handle 11 comprises a main body 111 and a grip 112, with the jaw assembly 30 connected to the main body 111. The trigger 12 comprises a connecting portion 121 and an operating portion 122. The connecting portion 121 and the operating portion 122 may be integrally formed or separately connected. The connecting portion 121 is rotatably disposed within the main body 111 and interferes with the pull rod 32 within the main body 111, such that rotation of the connecting portion 121 drives the pull rod 32 along the axial direction of the jaw assembly 30. The operating portion 122 is located outside the handle 11 and opposite the grip 112. The operating portion 122 can be moved toward or away from the grip 112 by the connecting portion 121. The end of the switch member 62 extending from the housing of the handle 11 is located outside the motion path of the operating portion 122. In this embodiment, the switch member 62 may also extend from any position of the handle 11 housing outside the movement path of the operating portion 122 as long as it does not affect the use of the instrument and the doctor's operation.

[0128] In some embodiments, as shown in FIG10 , one end of the switch member 62 is connected to the valve body 61, and the other end of the switch member 62 extends outside the side of the handle 11 facing away from the trigger 12. The switch member 62 controls the opening or closing of the valve body 61 under the action of an applied external force. In this embodiment, the switch member 62 can also be located on the side of the handle 11 facing away from the trigger 12 so as not to interfere with the operation of the trigger 12.

[0129] In some embodiments, as shown in FIG10 , the handle 11 has a front side 11 c facing the forceps assembly 20 and a rear side 11 d facing away from the forceps assembly 20 along the extension direction of the pull rod 32. The trigger 12 is located on the front side 11 c of the handle 11, and the switch member 62 extends from the rear side 11 d of the handle 11. In this embodiment, the trigger 12 is located on the front side 11 c of the handle 11 to facilitate the surgeon's operation of expanding and retracting the trigger 12. The switch member 62 is located on the rear side 11 d of the handle 11 so as not to interfere with the operation of the trigger 12 and the surgeon's operation of the surgical instrument 100. When the valve body 61 needs to be opened, the switch member 62 is pressed to deliver the fluid to be discharged.

[0130] In some embodiments, as shown in FIG10 , the handle 11 has a main body 111 located at an upper side 11a and a grip portion 112 located at a lower side 11b. The jaw assembly 30 is connected to the main body 111, and the trigger 12 is located at a front side 11c of the grip portion 112. The main body 111 has a head 1111 located at the front side 11c and a tail 1112 located at the rear side 11d. The switch 62 extends from the tail 1112. In this embodiment, this arrangement not only prevents the physician from having difficulty gripping the grip 112 and operating the trigger 12, but also facilitates the physician from pressing the switch 62 from the tail 1112.

[0131] For example, as shown in Figure 5, in order to reduce the volume of the handle 11, the end of the pull rod 32 is close to the inner wall of the tail 1112. At this time, there is a preset space between the end of the pull rod 32 and the inner wall of the tail 1112 so that the pull rod 32 can move backward to drive the pliers head assembly 20 to close. The switch structure 60 and the pull rod 32 are staggered to avoid interfering with the movement of the pull rod 32.

[0132] It should be noted that the switch structure 60 is not limited to being installed on the handle 11. For example, in other embodiments, as shown in FIG13 , one end of the first fluid channel 50 is connected to the second fluid channel 33, and the other end of the first fluid channel 50 extends out of the housing of the handle 11. The switch structure 60 is disposed on the first fluid channel 50 extending out of the housing of the handle 11. In this embodiment, the switch structure 60 can be independently disposed on the portion of the first fluid channel 50 extending outside the handle 11, that is, externally disposed on the handle 11, to adjust the on / off state of the first fluid channel 50. This ensures that the switch structure 60 is not in contact with the handle 11 and is away from the doctor's operating position, thereby better avoiding affecting the doctor's operation of the surgical instrument 100.

[0133] Optionally, as shown in Figures 13-15, the switch structure 60 includes a valve body 61 and a switch member 62. The valve body 61 is disposed on the first fluid channel 50 extending from the housing of the handle 11. The valve body 61 can be opened or closed to adjust the on / off state of the first fluid channel 50. The switch member 62 is connected to the valve body 61 and is used to receive a force to drive the switch structure 60 to switch between a first state and a second state. In this embodiment, the switch member 62 is constructed to be able to control the opening or closing of the valve body 61 under the action of an external force. The switch structure 60 is placed outside the handle 11, which facilitates the disassembly, assembly, and maintenance of the switch structure 60. It can also be kept away from the handle 11, thereby more effectively avoiding affecting the doctor's operation of the surgical instrument 100.

[0134] In some embodiments, as shown in FIG16 , the valve body 61 includes a connecting channel 612 communicating with the first fluid channel 50 and a valve 63 movably disposed within the connecting channel 612. A switch member 62 is connected to the valve 63 and is used to receive a force to move the valve 63 to open or close the connecting channel 612, thereby switching the first fluid channel 50 between an open state and a closed state. In this embodiment, the valve body 61 further includes a first outlet 613 and a second outlet 614 communicating with the connecting channel 612. The first outlet 613 communicates with the first fluid channel 50, and the second outlet 614 communicates with the fluid delivery device. The valve 63 is movably disposed within the connecting channel 612. The switch member 62 is connected to the valve body 61 via the valve 63. Under the action of an external force, the switch member 62 can move the valve 63 to adjust the valve 63 to open or close the connecting channel 612, thereby controlling the opening or closing of the valve body 61. This arrangement facilitates the control of the opening or closing of the connecting channel 612 to regulate the flow of the first fluid channel 50.

[0135] Alternatively, as shown in FIG16 , the valve 63 may be provided with a through hole 631 extending therethrough, and the valve 63 may be rotatably disposed within the connecting channel 612. The switch member 52 is used to receive a force to drive the valve 63 to rotate. That is, the switch member 62 can drive the valve 63 to rotate under the action of an external force to adjust the angle between the direction of penetration of the through hole 631 and the direction of penetration of the connecting channel 612, thereby adjusting the size of the area of ​​the connecting channel 612 through which the fluid can pass. In this embodiment, the above-mentioned arrangement can be used to adjust the relative or offset position of the through hole 631 and the connecting channel 612, and by adjusting the offset angle between the two, the flow rate of the fluid that can pass through the connecting channel 612 can be adjusted. For example, the valve body 61 may adopt a spherical structure or a hemispherical structure of the specific through hole 631 to facilitate rotation.

[0136] Optionally, when the through-hole 631 is parallel to the through-hole 612, the switch member 62 rotates to the first position and the connecting channel 612 is fully open. When the through-hole 631 is perpendicular to the through-hole 612, the switch member 62 rotates to the second position and the connecting channel 612 is closed. When the switch member 62 rotates from the first position to the second position, the area of ​​the connecting channel 612 through which fluid can pass gradually decreases. In this embodiment, when the through-hole 631 is parallel to the through-hole 612, the through-hole 631 is opposite to the connecting channel 612, and the connecting channel 612 is fully open, so that the fluid flow rate that can pass through the connecting channel 612 reaches a maximum. When the through-hole 631 is perpendicular to the through-hole 612, the through-hole 631 is completely offset from the connecting channel 612, so that the fluid cannot pass through the connecting channel 612, that is, the connecting channel 612 is closed. Through the above arrangement, the connection channel 612 can be adjusted between fully open, partially open and closed states, so as to meet the doctor's usage requirements.

[0137] Optionally, the switch structure 60 provided on the first fluid channel 50 outside the handle 11 is not limited to the embodiments shown in Figures 14 to 16, but may also adopt the embodiments shown in Figures 11 and 12, or other embodiments that can control the on and off of the first fluid channel 50.

[0138] Optionally, the switch structure 60 provided on the handle 11 is not limited to the embodiments shown in Figures 11 and 12, and can also adopt the embodiments shown in Figures 14 to 16, or other embodiments that can control the on and off of the first fluid channel 50.

[0139] It should be noted that in addition to being able to adjust the on and off of the first fluid channel 50 through the action of external force, that is, through physical contact to control the switch structure 60, the switch structure 60 can also be controlled by a computer program, that is, through existing software to control the opening and closing of the switch structure 60.

[0140] For example, in yet other embodiments, the surgical instrument 100 further includes a control module configured to output an electrical signal to the switch structure 60 to drive the switch structure 60 to switch between a first state and a second state. In this embodiment, the switch structure 60 can be configured as an electromagnet switch, so that the control module outputs an electrical signal to the electromagnet switch to control the opening and closing of the switch structure 60, thereby controlling the flow of the first fluid channel 50. The control module can be controlled according to an existing computer program, eliminating the need for manual operation and improving the surgeon's surgical efficiency.

[0141] As an embodiment, the control module includes a monitoring unit and a control unit. The monitoring unit is configured to output a signal when detecting that the surgical instrument 100 is in an excited state. When the surgical instrument 100 is in the excited state, the monitoring unit controls the forceps assembly 20 to apply energy to the biological tissue. The control unit is configured to receive the output signal of the monitoring unit and output an electrical signal to the switch structure 60 to drive the switch structure 60 to switch between a first state and a second state, thereby controlling the on / off of the first fluid channel 50. In this embodiment, the control unit is configured to control the opening and closing of the switch structure 60, and the monitoring unit is configured to monitor whether the surgical instrument 100 is in an excited state. When the surgical instrument 100 is in the excited state, smoke is generated. The monitoring unit sends a signal to the control unit, and the control unit controls the switch structure 60 to open, thereby conducting the first fluid channel 50 and expelling the smoke.

[0142] In some embodiments, as shown in Figures 1 and 2, the surgical instrument 100 also includes a function button 70, which can be set on the front side 11c of the handle 11 so that the doctor can trigger the function button 70 with his index finger when holding the handle 11 to control the forceps assembly 20 to apply energy to the tissue in the tissue grasping area, so that the surgical instrument 100 is in an excited state.

[0143] This embodiment of the present application also provides a surgical system comprising a surgical energy host and the aforementioned surgical instrument 100. The surgical energy host is connected to the surgical instrument 100. In this embodiment, the surgical energy host can provide energy to the surgical instrument 100, can also be used to provide electrical signals to the surgical instrument 100, and can also be used to receive signal feedback from the surgical subject and perform relevant analysis. The structure and function of the surgical instrument 100 in the surgical system proposed in this embodiment of the application are the same as those in the aforementioned embodiment. For details, please refer to the description of the aforementioned embodiment and will not be repeated in this embodiment.

[0144] Those skilled in the art may combine and combine the different embodiments or examples described in this specification and the features of the different embodiments or examples without mutual contradiction.

[0145] The above description is merely a specific embodiment of the present application, but the scope of protection of the present application is not limited thereto. Any person skilled in the art can easily conceive of various equivalent modifications or substitutions within the technical scope disclosed in the present application, and such modifications or substitutions should be included in the scope of protection of the present application. Therefore, the scope of protection of the present application should be based on the scope of protection of the claims.

Claims

1. A surgical instrument comprising: A handle assembly, comprising a handle for holding and a trigger capable of moving relative to the handle, wherein the handle is provided with a first fluid channel; A forceps head assembly, comprising a first forceps head and a second forceps head, wherein the first forceps head and the second forceps head can be relatively pivoted to achieve opening or closing of the forceps head assembly, and at least one of the first forceps head and the second forceps head is configured to process biological tissue; A pliers tube assembly, comprising a pull rod and a pliers tube sleeved outside the pull rod, for connecting the pliers head assembly and the handle. When the trigger moves relative to the handle, the pliers head assembly moves under the action of the pull rod in a motion-coordinated relationship with the trigger, so that the first pliers head and the second pliers head pivot relative to each other; A second fluid channel is formed between the outer peripheral wall of the pull rod and the inner peripheral wall of the clamp tube, and an opening connected to the second fluid channel is provided on the clamp tube near the clamp head assembly. The first fluid channel is connected to the second fluid channel and is used to connect to a fluid conveying device to realize a fluid passage between the opening and the fluid conveying device.

2. The surgical instrument of claim 1, wherein: The surgical instrument further comprises: The transition structure is used to seal and connect the first fluid channel and the second fluid channel to realize a fluid passage between the opening and the fluid delivery device.

3. The surgical instrument of claim 2, wherein: The transition structure includes an inner cavity and a first interface and a second interface connected to the inner cavity. The first interface is used to seal the inner cavity and the first fluid channel, and the second interface is used to seal the inner cavity and the second fluid channel.

4. The surgical instrument of claim 3, wherein: The handle assembly further comprises a rotating wheel, which is sleeved on one end of the clamp tube away from the clamp head assembly, and the rotating wheel can drive the clamp tube to rotate coaxially; The rotating wheel has an extension portion, the pull rod extends out of the clamp tube and passes through the extension portion and the transition structure, and the second interface is sealed and connected to the extension portion so that the second fluid channel is connected to the inner cavity.

5. The surgical instrument of claim 4, wherein: The second interface is elastically in contact with the extension portion, so that when the rotating wheel rotates, the second interface maintains a sealed fit with the extension portion.

6. The surgical instrument of claim 4, wherein: One of the second interface and the extension portion is sleeved on the other of the second interface and the extension portion to achieve sealing cooperation between the second interface and the extension portion.

7. The surgical instrument of claim 4, wherein: At least one of the second interface and the extension portion is an elastic structure, or The transition structure further includes a first sealing ring, and the second interface elastically abuts against the extension portion through the first sealing ring.

8. The surgical instrument of claim 2, wherein: The transition structure further includes a sealing member, the pull rod is passed through the transition structure and extends from the sealing member to be associated with the trigger movement, and the sealing member is in sealing cooperation with the pull rod.

9. The surgical instrument of claim 8, wherein: The sealing member is an elastic structure, and the transition structure is sealed and matched with the pull rod through the elastic structure, so that when the pull rod moves along the axial direction of the clamp tube, air tightness is maintained between the transition structure and the pull rod.

10. The surgical instrument of claim 3, wherein: The transition structure also includes a second sealing ring and a limiting member. The second sealing ring is sleeved on the pull rod to form a sealing fit between the pull rod and the transition structure. The limiting member is used to limit the axial displacement of the second sealing ring in the clamp tube to prevent the second sealing ring from moving with the pull rod when the pull rod moves axially along the clamp tube.

11. The surgical instrument of claim 10, wherein: The transition structure is also provided with an abutment portion and a hollow area for accommodating the second sealing ring. The inner cavity is separated from the hollow area by the abutment portion. The abutment portion is used to abut the side of the second sealing ring facing the inner cavity. The limiting member is used to be inserted into the hollow area and abut against the side of the second sealing ring facing away from the inner cavity.

12. The surgical instrument of claim 3, wherein: The pull rod moves axially under the drive of the trigger to drive the clamp head assembly to open or close; The second interface extends along the axial direction of the pull rod, and the extension direction of the first interface is arranged at an angle to the axial direction of the pull rod.

13. The surgical instrument of claim 12, wherein: The first interface has a first end facing the pliers head assembly and a second end opposite to the first end, the first end is connected to the inner cavity, and the second end is inclined in a direction away from the pull rod and connected to the first fluid channel extending outside the handle.

14. The surgical instrument of claim 3, wherein: The first fluid channel is a hose structure, the fluid delivery device is a negative pressure source, one end of the hose structure is connected to the first interface, and the other end of the hose structure extends out of the handle and is connected to the negative pressure source, so that the smoke generated when the forceps head assembly applies energy to the biological tissue is discharged through the opening.

15. The surgical instrument of claim 1, wherein: One end of the first fluid channel is communicated with the second fluid channel, and the other end of the first fluid channel extends out from the bottom of the handle for holding.

16. The surgical instrument of claim 2, wherein: The transfer structure is integrally connected with the handle; or, The adapter structure is snap-connected and / or threadedly connected and / or interference-fitted with the handle.

17. The surgical instrument of claim 1, wherein: The surgical instrument further comprises: A switch structure, wherein the switch structure is configured to be switchable between a first state and a second state and act on the first fluid channel, wherein the first fluid channel is in an on state when the switch structure is in the first state, and the first fluid channel is in a closed state when the switch structure is in the second state.

18. The surgical instrument of claim 1, wherein: The clamp tube is attached with an insulating layer at least at the opening, so as to prevent leakage at the opening during use of the surgical instrument.

19. The surgical instrument of claim 18, wherein: The clamp tube comprises a front section close to the clamp head assembly, the opening is arranged in the front section, and the insulating layer is attached to the outer peripheral wall of the front section and the inner peripheral wall close to the opening.

20. The surgical instrument of claim 1, wherein: The clamp tube is electrically connected to the first clamp head, the pull rod is electrically connected to the second clamp head, and the clamp tube and the pull rod are relatively insulated; or, The pull rod comprises a first conductive unit and a second conductive unit which are independent of each other, the first conductive unit is electrically connected to the first clamp head, and the second conductive unit is electrically connected to the second clamp head; or, The clamp tube is insulated from the pull rod, and the surgical instrument further comprises a first wire and a second wire, wherein the first wire is electrically connected to the first clamp head, and the second wire is electrically connected to the second clamp head; Such that at least one of the first forceps head and the second forceps head is configured to apply energy from a surgical energy host to biological tissue.

21. A surgical system comprising: The surgical instrument according to claim 1; A surgical energy host is connected to the surgical instrument to provide energy to the surgical instrument.

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