Surgical electric coagulation forceps device

Abstract

The utility model relates to a surgical electric coagulation forceps device which is characterized in that the surgical electric coagulation forceps device comprises two forceps piece assemblies which can move between a first position where the forceps piece assemblies are far away from each other and a second position where the forceps piece assemblies are close to each other, each forcep piece assembly is provided with a forcep handle at the near end, a forcep tip at the far end and a forcep rod located between the forcep handle and the forcep tip, and the forcep handle and the forcep rod are separately formed and connected with each other. The forceps have the beneficial effects that the forceps handle and the forceps rods are formed by being separated from each other and can be made of different materials, technologies and / or geometric structures, so that the respective special requirements of the forceps handle and the forceps rods are met.

Description

Technical Field

[0001] The utility model relates to a hemostatic tool for surgical operations, in particular to an electrocoagulation forceps device for surgery. Background Art

[0002] Currently, the refinement and specialization of medical devices is a goal and trend for physicians performing surgical procedures. Bipolar coagulation, as an efficient and reliable method for hemostasis, is widely used in surgical procedures. Various bipolar coagulation forceps are commonly used in existing surgical procedures. Their principle is to mount two forceps in a fixed holder. The forceps are pinched together with the fingers, causing the tips of the forceps to grasp a blood vessel or tissue. At this point, the surgeon steps on a foot pedal, causing the high-frequency electrosurgical unit to output a high-frequency current, which is then passed through the forceps tips to the localized blood vessel or tissue. The thermal effect of the high-frequency current causes dehydration and shrinkage of the vessel wall, coagulation of the blood within the vessel, and fusion of the vessel and the clot, achieving effective hemostasis. Because surgical procedures often require limited operating space, and the larger the incision or access, the greater the secondary trauma to the patient, surgical access is often minimized and minimally invasive. Furthermore, surgeries require the coordinated or simultaneous use of multiple instruments, so only a few can be used simultaneously.

[0003] The blades of conventional bipolar electrocoagulation forceps are typically formed from sheet or coiled material through stamping or milling. Furthermore, if the forceps are designed for dripping, a groove is machined into the blade blank, into which a capillary tube is embedded, either by welding or gluing, to serve as a water channel. Due to the need for blade strength, and the fact that the groove significantly weakens the blade shaft, the shaft where the blade enters the surgical wound must have a certain width and thickness to ensure that the bipolar electrocoagulation forceps maintain their strength during surgery. Otherwise, the tip of the forceps can easily cause a scissor-like effect when gripping tissue or blood vessels, compromising the hemostatic effect of electrocoagulation. Currently, the shafts of conventional electrocoagulation forceps are widest near the operator's handhold, reaching approximately 5mm-6mm. This wide shaft can partially block the operator's field of vision and illumination, hindering observation of the coagulation site. Furthermore, the wide shaft also increases the surgical corridor, hindering the simultaneous use of multiple instruments during surgery. Since the forceps handle is relatively wide, it is not suitable for stopping bleeding from deep into the tissue through small channels (such as transnasal approach, ventriculoscope, etc.), especially when used in minimally invasive microsurgery and neurosurgery, it has great limitations. Utility Model Content

[0004] The present utility model aims to provide a surgical electrocoagulation forceps device that can address at least one of the aforementioned problems. Specifically, it relates to a disposable, non-stick, self-controlled bipolar electrocoagulation forceps device with an innovative structure, compact design, flexible operation, a slimmer forceps shaft, and a superior intraoperative electrocoagulation field of view. The device is particularly suitable for use in neurosurgery, otolaryngology, spinal surgery, minimally invasive microsurgery, and deep neurosurgical procedures involving small channels.

[0005] In order to achieve the above-mentioned purpose, the utility model proposes a surgical electrocoagulation forceps device, which has a distal end that is farther away from the operator when in use and a proximal end that is closer to the operator when in use, and is characterized in that the surgical electrocoagulation forceps device includes two tweezers blade assemblies, and the two tweezers blade assemblies are capable of moving between a first position farther away from each other and a second position closer to each other, wherein each tweezers blade assembly has a proximal tweezers handle, a distal tweezers tip, and a tweezers rod located between the tweezers handle and the tweezers tip, wherein the tweezers handle and the tweezers rod are constructed separately from each other and connected to each other.

[0006] The beneficial effects of the surgical electrocoagulation forceps device of the present invention are, but not limited to, that since the forceps handle and the forceps rod are constructed separately from each other, that is, they are constructed in at least two pieces, they can be made of different materials, processes and / or geometric structures to meet the special needs of the forceps handle and the forceps rod respectively.

[0007] Advantageously, the surgical electrocoagulation forceps device further comprises a forceps seat assembly, the forceps seat assembly comprising a forceps seat, a forceps seat cover and a three-way joint arranged between the forceps seat and the forceps seat cover, the two tweezers assemblies can be fixed to the forceps seat at their proximal ends respectively, and the two tweezers assemblies can be supplied with liquid by the same infusion tube via the three-way joint. The use of the three-way joint can ensure that the two tweezers assemblies obtain a consistent flow of coolant and can also save an infusion tube. The three-way joint is hidden between the forceps seat and the forceps seat cover, making the structure compact and beautiful.

[0008] Advantageously, the tweezers handle and the tweezers rod are inseparably connected to each other. In other words, the two are inseparably connected to each other under non-destructive conditions.

[0009] Advantageously, the forceps handle is provided with a groove on its distal free end surface, and the forceps rod rests with its proximal end in the groove and is welded or riveted to the forceps handle.

[0010] Advantageously, the tweezers seat forms a receiving groove on the lower side of its bottom wall, the three-way connector is received in the receiving groove, and the tweezers seat cover covers the three-way connector from below the receiving groove with its bottom cover.

[0011] Advantageously, the tweezers handles of the two tweezers blade assemblies are inserted with their proximal ends into the tweezers holder and extend above the bottom wall of the tweezers holder.

[0012] Advantageously, the bottom wall of the tweezers seat is provided with a slit, and the two capillaries extending from the proximal end of the tweezers handle away from the tweezers handle are respectively inserted into the three-way connector after passing through the slit.

[0013] Advantageously, the three-way connector has two longitudinally extending through holes, the infusion tube is sleeved on the proximal end of the three-way connector, and two capillaries extending from the proximal end of the forceps handle are respectively inserted into the distal ends of the two through holes of the three-way connector.

[0014] Advantageously, the two through holes terminate at distal ends in a receiving cavity, wherein the receiving cavity is filled with adhesive to fix the capillary tube to the tee connector.

[0015] Advantageously, the forceps rod is cylindrical or conical in shape and has an infusion channel centrally disposed therein. The forceps rod has a receiving cavity at its proximal end, into which a capillary extending from the distal end of the forceps handle is inserted to communicate with the fluid in the infusion channel.

[0016] Advantageously, the accommodating cavity is provided with a bell mouth at its proximal end, and the capillary is fixed at the bell mouth by soldering or filling with glue.

[0017] Advantageously, a sealing ring is provided between the inner wall of the accommodating cavity and the capillary tube.

[0018] Advantageously, the tweezers shaft and the tweezers tip are designed separately from one another and are connected to one another.

[0019] Advantageously, the tweezers rod has a threaded section with external threads and an adjacent reinforcement section at its distal end, and the tweezers tip has a threaded section with internal threads and an adjacent accommodation section at its proximal end, the threaded section with external threads of the tweezers rod and the threaded section with internal threads of the tweezers tip are threadedly engaged with each other, and the reinforcement section of the tweezers rod is inserted into the accommodation section of the tweezers tip.

[0020] Advantageously, the tweezers shaft and the tweezers tip are welded at their transition point.

[0021] Advantageously, the tweezers handle is provided with a receiving groove on its inner side, a capillary is embedded in the receiving groove, and the two tweezers blade assemblies can be connected to the three-way joint via the capillary respectively.

[0022] Advantageously, the tweezers blade assembly is sprayed with insulating paint or plastic-sprayed on most of its surface to form an insulating layer.

[0023] Advantageously, the distal end cap of the tweezers base cover passes between the tweezers handles of the two tweezers blade assemblies. BRIEF DESCRIPTION OF THE DRAWINGS

[0024] The present invention will be explained in more detail below with reference to the accompanying drawings using embodiments, but the present invention is not limited to the embodiments described in the drawings and described in detail below.

[0025] Figure 1a is a schematic side view of a surgical electrocoagulation forceps device according to one embodiment of the present utility model;

[0026] Figure 1b yes Figure 1a A schematic top view of a surgical electrocoagulation forceps device;

[0027] Figure 2a yes Figure 1a A schematic inner side view of the left blade assembly of the surgical electrocoagulation forceps device;

[0028] Figure 2b yes Figure 2a A schematic outer side view of the left tweezers assembly in FIG;

[0029] Figure 2c yes Figure 2a A schematic bottom view of the left tweezers assembly in FIG;

[0030] Figure 3 yes Figure 2a A schematic cross-sectional view of the left tweezers assembly at section line HH;

[0031] Figure 4a yes Figure 2a A partially enlarged schematic cross-sectional view of the left tweezers blade assembly at position III in FIG, showing a first connection mode between the capillary and the tweezers rod;

[0032] Figure 4b yes Figure 2a A partially enlarged schematic cross-sectional view of the left tweezers blade assembly at position III in FIG, showing a second connection mode between the capillary and the tweezers rod;

[0033] Figure 5 yes Figure 2a A partially enlarged schematic cross-sectional view of the left tweezers blade assembly at position IV in FIG, where the connection between the tweezers shaft and the tweezers tip can be seen;

[0034] Figure 6a yes Figure 2a A schematic inner side view of the tweezers handle of the left tweezers blade assembly in FIG.

[0035] Figure 6b yes Figure 6a A schematic side view of the outer side of the forceps handle;

[0036] Figure 6c yes Figure 6a A schematic bottom view of the forceps handle in FIG;

[0037] Figure 7 yes Figure 6a An enlarged perspective view of the distal end of the forceps handle;

[0038] Figure 8a yes Figure 2a A schematic side view of the tweezers rod of the left tweezers blade assembly in FIG.

[0039] Figure 8b yes Figure 8a A schematic side view of a partially cutaway view of the forceps shaft in FIG.

[0040] Figure 8c yes Figure 8a A schematic side view of a fully cutaway view of the forceps shaft in FIG.

[0041] Figure 9 yes Figure 8b A partial enlarged view of the tweezers rod at position V;

[0042] Figure 10 yes Figure 8c A partial enlarged view of the forceps rod at position VI;

[0043] Figure 11a yes Figure 2a A schematic side view of a partial cross-section of the inner side of the tweezers tip of the left tweezers blade assembly;

[0044] Figure 11b yes Figure 11a Schematic top view of the tweezers tip in;

[0045] Figure 11c yes Figure 11a Schematic rear view of the forceps tip in;

[0046] Figure 11d yes Figure 11c Schematic cross-sectional view of the tweezers tip at the cutting plane DD;

[0047] Figure 11e yes Figure 11c Schematic diagram of the tweezers tip in the direction of viewing angle C;

[0048] Figure 12a yes Figure 1a A partially enlarged schematic cross-sectional view of the electrocoagulation forceps assembly at position I;

[0049] Figure 12b yes Figure 1a Another schematic cross-sectional view of the electrocoagulation forceps assembly in FIG. 1 , wherein the insertion of the capillary into the three-way connector can be seen;

[0050] Figure 13 yes Figure 1bA partially enlarged schematic cross-sectional view of the electrocoagulation forceps assembly at position II is shown, where the wire connecting the cable to the forceps handle can be seen;

[0051] Figure 14 yes Figure 1a A partial enlarged view of the electrocoagulation forceps assembly at the forceps base assembly;

[0052] Figure 15 yes Figure 1a Another partial enlarged view of the electrocoagulation forceps assembly at the forceps base assembly, in which the forceps base and the forceps base cover are omitted;

[0053] Figure 16 yes Figure 1a Another partial enlarged view of the electrocoagulation forceps assembly at the forceps base assembly, where the forceps base cover is omitted;

[0054] Figure 17a yes Figure 1a A perspective view of a forceps holder of the electrocoagulation forceps assembly;

[0055] Figure 17b yes Figure 17a A distal end view of the forceps holder in FIG.

[0056] Figure 17c yes Figure 17a Proximal end view of the forceps holder in FIG;

[0057] Figure 18 yes Figure 1a A perspective view of a forceps base cover of the electrocoagulation forceps assembly;

[0058] Figure 19a yes Figure 1a A perspective view of the installation of a forceps base and a forceps base cover of the electrocoagulation forceps assembly;

[0059] Figure 19b yes Figure 19a A proximal end view of the installation of the forceps holder and the forceps holder cover;

[0060] Figure 19c yes Figure 19b A cross-sectional view of the tweezers seat and the tweezers seat cover at the cutting line II;

[0061] Figure 20a yes Figure 1a A perspective view of the three-way connector of the electrocoagulation forceps assembly; and

[0062] Figure 20b yes Figure 20a A longitudinal cross-sectional view of the tee joint in FIG. DETAILED DESCRIPTION

[0063] An illustrative embodiment of the surgical electrocoagulation forceps device of the present invention is described below. In this specification, for the sake of explanation only, various systems, structures and devices are schematically depicted in the accompanying drawings, but not all features of the actual systems, structures and devices are described. For example, well-known functions or structures are not described in detail to avoid unnecessary details that make the present invention unclear. It should be understood that in any actual application, many specific implementation decisions need to be made to achieve the specific goals of the developer or user, and system-related and industry-related restrictions need to be complied with. These specific goals may vary from one actual application to another. In addition, it should be understood that although such specific implementation decisions are complex and time-consuming, they are routine tasks for ordinary technicians in this field who benefit from the present invention.

[0064] The terms and phrases used herein should be understood and interpreted as having a meaning consistent with the understanding of those terms and phrases by those skilled in the relevant art. No special definition of a term or phrase, i.e., a definition that is different from the ordinary and customary meaning as understood by those skilled in the art, is intended to be implied by consistent usage of a term or phrase herein. For terms or phrases that are intended to have a special meaning, i.e., a meaning that is different from that understood by those skilled in the art, such special definition will be explicitly set forth in the specification as a definition, directly and unambiguously giving the special definition of the term or phrase.

[0065] Unless the content requires otherwise, throughout the following description, the word "include" and variations such as "comprising" and "having" are to be interpreted in an open and inclusive sense, that is, as in "including but not limited to".

[0066] Next, a surgical electrocoagulation forceps device 1 according to an embodiment of the present invention will be exemplified with reference to the accompanying drawings. The surgical electrocoagulation forceps device 1 is particularly suitable for hemostasis operations in neurosurgery, ENT, spine, minimally invasive microsurgery or neurosurgery small channel deep surgery. During the operation, the electrocoagulation forceps device 1 can be used in conjunction with a flushing device, for example. The surgeon or operator can operate the flushing device with one hand to flush the wound surface to accurately find the bleeding site, and operate the electrocoagulation forceps device 1 with the other hand to perform electrocoagulation hemostasis on the bleeding site found. Other usage scenarios of the electrocoagulation forceps device 1 are also conceivable, for example, it can be used in conjunction with a nasal endoscope, a ventriculoscope, etc.

[0067] The electrocoagulation forceps device 1 may have a distal end that is away from an operator during surgery and a proximal end that is close to the operator. The operator may be a doctor or other personnel who operates the electrocoagulation forceps device 1 during surgery.

[0068] The electrocoagulation forceps device 1 may include two forceps blade assemblies 2 that are positioned opposite each other and are substantially mirror-symmetrical. An operator may manipulate the two forceps blade assemblies 2 to perform electrocoagulation hemostasis on a blood vessel or tissue during surgery. The two forceps blade assemblies 2 may be manipulated to move closer together to clamp the blood vessel or tissue, or to move away from each other to separate the blood vessel or tissue.

[0069] The two tweezers components 2 have basically the same structure, so the following Figures 2a to 11e , mainly taking the tweezers assembly 2 located on the left side when in use as an example for exemplary description.

[0070] See also Figures 2a to 2c The tweezers blade assembly 2 may have a tweezers handle 3 at its proximal end for the operator to hold during surgery. The tweezers handle 3 may be substantially sheet-shaped. The tweezers handle 3 may be made of copper or other materials, for example. See in particular Figures 6a to 6c The forceps handle 3 may have a proximal fixing section 3.1, a distal connecting section 3.2, and a gripping section 3.3 between the fixing section 3.1 and the connecting section 3.2. The fixing section 3.1 may be thinner than other parts of the forceps handle 3 (see Figure 6c ). See Figure 6b The gripping section 3.3 may be provided with a surface structure 4 on its outer side that can be touched by the operator's fingers. The surface structure 4 can facilitate the operation of the tweezers handle 3 by the fingers and play an anti-slip effect. Figure 6a , the connecting section 3.2 can be bent upward at an obtuse angle relative to the gripping section 3.3 during use, which facilitates the subsequent formation of a gun-shaped tweezers assembly 2. In some embodiments, the connecting section 3.2 can extend substantially in a straight line with the gripping section 3.3, which facilitates the subsequent formation of a straight tweezers assembly 2 (not shown). The distal free end surface 5 of the connecting section 3.2 can be substantially parallel to but slightly tilted downward relative to the gripping section 3.3, whereby the tweezers rod 6 to be described below can be arranged slightly tilted downward relative to the tweezers handle 3 (see Figure 2a ) to obtain a better view during surgery. Figure 7 , the connecting section 3.2 can be provided with a groove 7 on the distal free end surface 5, and the groove 7 can extend over the entire length of the free end surface 5. In addition, the forceps handle 3 can be formed with a receiving groove 8 on its inner side (see Figure 6a and Figure 7 ), the receiving tank 8 can accommodate a capillary tube 9 for conveying liquid, such as a coolant, such as a stainless steel capillary tube 9 (see Figure 2a and Figure 3The diameter of the capillary 9 can be smaller than the depth of the receiving groove 8, so that the capillary 9 can be embedded in the receiving groove 8 over its entire circumference. The receiving groove 8 can extend in the entire longitudinal direction of the gripping section 3.3 and the connecting section 3.2 of the tweezers handle 3, and can be open toward the free end face 5 of the connecting section 3.2, intersecting with the groove 7 (see Figure 7 The capillary tube 9 may have a main body portion 9.1, a proximal bend portion 9.2 and a distal bend portion 9.3. The main body portion 9.1 of the capillary tube 9 may be completely embedded in the receiving groove 8 and extend, and the proximal bend portion 9.2 may leave the proximal end of the receiving groove 8 and extend downwardly toward the inner side of the tweezers assembly 2 (see FIG. Figure 2a ), the distal bent portion 9.3 can be separated from the distal end of the receiving groove 8 and extend above the free end surface 5 of the connecting section 3.2 (see Figure 4a and Figure 4b ).

[0071] The capillary tube 9 is embedded in the receiving groove 8 along the extension length L1 of the main body 9.1 (see Figure 2a ) can be continuously soldered in place, and the soldered areas can then be polished to remove sharp corners and edges, and any excess solder can be smoothed. Otherwise, sharp corners and edges can affect the insulation and withstand voltage performance of the subsequent plastic spray coating on the surface of the tweezers assembly 2, affecting intraoperative safety.

[0072] The tweezers blade assembly 2 may include a tweezers rod 6 connected to the tweezers handle 3 at the distal end of the tweezers handle 3. The tweezers rod 6 may be substantially cylindrical or conical and hollow, and may have an infusion channel 10 centrally disposed therein (see Figure 8c ), the infusion channel 10 can run through the entire forceps shaft 6. The forceps shaft 6 can be made of, for example, stainless steel, or titanium alloy. The method of first manufacturing the forceps shaft 6 and the forceps handle 3 separately and then connecting them together is very advantageous compared to the one-piece manufacturing method in the prior art. This is because the forceps shaft 6 can be made of a material different from the forceps handle 3, such as stainless steel, into a thinner cylindrical or conical shape while maintaining its strength, making it more suitable for hemostatic operations in small channel deep surgical treatments.

[0073] See especially Figures 8a to 10 The forceps rod 6 may include a proximal connecting section 6.1, a distal connecting section 6.2, and an intermediate extending section 6.3 therebetween. Figure 4a and Figure 4b, the tweezers rod 6 can be placed with its proximal connecting section 6.1 in the groove 7 on the distal free end face 5 of the tweezers handle 3, and can be fixedly connected to the tweezers handle 3 in an irremovable manner by welding, such as argon arc welding or laser welding. At this time, the depth of the groove 7 can be designed to be smaller than the radius of the tweezers rod 6, so that less than half of the tweezers rod 6 can be accommodated in the groove 7 in the radial direction. In some embodiments, the tweezers rod 6 can be placed with its proximal connecting section 6.1 in the groove 7, and the tweezers rod 6 can be irremovably fixed by riveting by squeezing the two side walls of the groove 7 toward the tweezers rod 6 using a press. At this time, the depth of the groove 7 can be designed to be larger than the radius of the tweezers rod 6, so that more than half of the tweezers rod 6, or even the entire tweezers rod 6 can be accommodated in the groove 7 in the radial direction. Other irremovable connection methods between the tweezers handle 3 and the tweezers rod 6 are also conceivable here. "Removable connection" generally means that any attempt to disassemble or separate these connections may cause the device to fail or be damaged.

[0074] Figure 4a and Figure 4b The enlarged views of FIG and FIG respectively illustrate different connection methods of the capillary tube 9 to the forceps shaft 6. The forceps shaft 6 can be provided with a receiving cavity 11 for the capillary tube 9 at its proximal connecting section 6.1. The diameter of this receiving cavity 11 can be larger than the diameter of the infusion channel 10. The distal bend 9.3 of the capillary tube 9, which exits the forceps handle 3, can be inserted into the receiving cavity 11 for fluid communication with the infusion channel 10 of the forceps shaft 6. In this case, the receiving cavity 11 itself can also constitute a part of the infusion channel 10.

[0075] exist Figure 4a and Figure 9 In the illustrated embodiment, the diameter of the accommodating cavity 11 is substantially equal to or slightly larger than the outer diameter of the capillary tube 9, so that the capillary tube 9 can be loosely inserted into the accommodating cavity 11. The accommodating cavity 11 may be provided with a flared mouth 12 at its proximal end, which can assist in soldering and fixing the capillary tube 9.

[0076] exist Figure 4b In the illustrated embodiment, the diameter of the accommodating cavity 11 is significantly larger than the outer diameter of the capillary tube 9, thereby forming a gap between the outer surface of the inserted capillary tube 9 and the inner wall of the accommodating cavity 11. A sealing ring 12 can be disposed within this gap to provide a liquid-tight seal. The provision of the sealing ring 12 prevents the coolant from undesirably escaping from this gap into the external environment.

[0077] See also Figure 10 The distal connecting section 6.2 of the forceps rod 6 may include a proximal threaded section 6.21 with external threads having a diameter smaller than that of the intermediate extension section 6.3 and a distal reinforcing section 6.22 having a diameter smaller than that of the threaded section 6.21.

[0078] The tweezers blade assembly 2 may include a tweezers tip 13 connected to the tweezers shaft 6 at the distal end of the tweezers shaft 6. The tweezers tip 13 may include a substantially conical body section 13.1 and a gripping section 13.2 at the distal end of the body section 13.1. Figure 11a and Figure 11d The main body section 13.1 may be centrally provided with a proximal connection cavity 13.11 and a distal infusion cavity 13.12 extending in the longitudinal direction thereof. Figure 5 The proximal connecting cavity 13.11 of the forceps tip 13 can accommodate the distal connecting section 6.2 of the forceps rod 6. For this purpose, the connecting cavity 13.11 can have a threaded section 13.111 with an internal thread and a receiving section 13.112 with a smaller diameter. Figure 5 , the threaded section 6.21 of the forceps rod 6 can be threadedly connected to the threaded section 13.111 of the connecting cavity, and the reinforced section 6.22 of the forceps rod 6 can be supported and accommodated in the accommodating section 13.112 of the connecting cavity 13.11. In addition, welding and fixing can be performed at the surface transition portion 14 of the forceps rod 6 and the forceps tip 13, so as to achieve a firm and sufficiently strong connection between the forceps rod 6 and the forceps tip 13. The infusion cavity 13.12 can be fluidically connected to the infusion channel 10 of the forceps rod 6. The infusion cavity 13.12 can extend to the proximal side of the clamping section 13.2, that is, it ends before extending to the clamping section 13.2. The infusion cavity 13.12 can be formed with a liquid outlet 13.13 at its distal side by a substantially vertical bend, and the liquid outlet 13.13 can be open toward the inner side of the tweezers assembly 2 so as to transport the cooling liquid from the inside, and the cooling liquid can then flow to the clamping surface 13.21 of the clamping section 13.2. See. Figure 11e The clamping surface 13.21 as the electrocoagulation hemostasis working part can be basically flat, and its distance from the longitudinal axis can be greater than or equal to the maximum radius of the forceps tip 13. The back of the clamping section 13.2 can be a circular arc surface, and the back of the tip is circular arc-shaped to prevent cutting tissue.

[0079] See also Figure 2a The tweezers blade assembly 2 can be wrapped with an insulating layer on its circumference in the extension length L2 from the gripping section 3.3 of the tweezers handle 3 to the liquid outlet 13.13 of the tweezers tip 13 by epoxy resin spraying, that is, first spraying plastic powder on it, and then heating and melting it to form an insulating layer. In addition to the spraying method, other methods such as spraying insulating paint or covering with insulating heat shrink tubing can also be considered. The extension length L3 of the clamping section 13.2 of the tweezers tip 13 is bare, that is, no insulating layer is provided.

[0080] In addition, see Figure 1bThe two opposing forceps handles 3 can be provided with a limiting convex structure 15.1 and a limiting concave structure 15.2 on their inner sides, respectively. The two limit structures are oriented toward each other and are coaxial. When clamping, the limiting convex structure 15.1 can be inserted into the limiting concave structure 15.2, thereby effectively preventing the two forceps tips 13 from misaligning when clamping.

[0081] The electrocoagulation forceps device 1 may include a forceps base assembly. The forceps base assembly may include a forceps base 16, see Figures 17a to 17c The forceps holder 16 may be in a generally tubular form, and may include two side walls 16.1, a top wall 16.2, a bottom wall 16.3, and a proximal end wall 16.4, while being open at its distal end. The cavity within the forceps holder 16 may be filled with AB glue for stabilization.

[0082] See also Figure 13 and Figure 17b The two side walls 16.1 of the tweezers base 16 can form two tweezers handle receiving grooves 17, and the two tweezers blade assemblies 2 can be inserted into the two tweezers handle receiving grooves 17 with the proximal fixing sections 3.1 of their tweezers handles 3 respectively in an interference fit. Figure 13 , Figure 14 and Figure 17c The proximal end wall 16.4 of the tweezers seat 16 may be provided with two inlets 18, which may be used for the positive and negative wire ends 20 of the cable 19 to pass through respectively. Figure 13 The positive and negative wire heads 20 are electrically connected to the corresponding tweezers assembly 2 via a wire 21 respectively to form an electrocoagulation voltage between the two clamping sections 13.2 of the tweezers assembly 2.

[0083] The bottom wall 16.3 of the tweezers holder 16 is arranged with its central area 16.31 upward, i.e. in the direction of the top wall 16.2, offset relative to the two lateral areas 16.32, so that a receiving groove 22 can be defined by the bottom surface of the central area 16.31 and the opposite inner surfaces of the two lateral areas 16.32. Figure 16 、 Figure 20a and Figure 20b The forceps base assembly may include a three-way connector 23, which may be accommodated in the accommodating groove 22. The three-way connector 23 may include a proximal conical section 23.1 and a distal cylindrical section 23.2. The two through holes 24 may extend parallel to the longitudinal direction of the three-way connector 23. The distal cylindrical section 23.2 may be provided with an accommodating cavity 25 in its distal central region 16.31, which is in fluid communication with the two through holes 24. Figure 16The three-way connector 23 can be connected to an infusion tube 26 by interference fit with its proximal conical section 23.1, and the two capillaries 9 of the two tweezers assemblies 2 can be inserted with their free ends of the proximal bent portions 9.2 into the distal ends of the two through holes 24 of the three-way connector 23, so that the infusion tube 26 and the two capillaries 9 can be fluidically connected. After the capillaries 9 are inserted, the accommodating cavity 25 of the distal cylindrical section 23.2 can be filled with adhesive to more stably fix the capillaries 9 to the three-way connector 23. Figure 17a 、 Figure 17b and Figure 13 The bottom wall 16.3 may further be provided with two slits 27 at its distal end, through which the proximal bent portion 9.2 of the capillary tube 9 may respectively pass to reach the three-way connector 23. Here, through the three-way connector 23, a single infusion tube 26 may simultaneously and evenly deliver coolant to the two tweezers blade assemblies 2, thereby improving the anti-adhesion effect during the electrocoagulation hemostasis process and saving a single infusion tube 26, thus saving costs and reducing structural complexity.

[0084] The tweezers base assembly may have a tweezers base cover 28 for mounting on the tweezers base 16, see Figure 18 The tweezers seat cover 28 may include a U-shaped bottom cover 28.1 and an end cover 28.2 extending vertically above the bottom cover 28.1 and connected to the bottom cover 28.1 at the distal end. Figures 19a to 19c When the tweezers base cover 28 is installed on the tweezers base 16, the bottom cover 28.1 of the tweezers base cover 28 closes the receiving groove 22 from the bottom to enclose the three-way connector 23 therein, wherein the bottom cover 28.1 can be embedded in the receiving groove 22. The end cover 28.2 of the tweezers base cover 28 can pass between the tweezers handles 3 of the two tweezers blade assemblies 2 to close the tweezers base 16 from the distal side.

[0085] See also Figure 1a and Figure 1b The infusion tube 26 may have a flow regulator 29, which can be used to open and close the infusion tube 26 or adjust the flow rate of the coolant. The infusion tube 26 can be connected to an external coolant source through a bell mouth 30. The cable 19 can be connected to the high-frequency electrosurgical unit through a plug 31. The cable 19 and the infusion tube 26 can be tied and fixed using multiple heat shrink tubes 32 to prevent them from becoming loose and messy. The handle of the plug 31 can adopt a fixed plug spacing to prevent accidental insertion when connecting to the device jack.

[0086] The capillary tube 9 built into the forceps handle 3, the hollow forceps shaft 6, and the hollow main section 13.1 of the forceps tip 13 can be connected in series to form an infusion path within the forceps blade assembly 2. The two capillaries 9 are connected to an infusion tube 26 via a three-way connector 23 to form the infusion path of the entire electrocoagulation forceps device 1.

[0087] When using the electrocoagulation forceps device 1, the left and right blade assemblies 2 are connected to a high-frequency electrosurgical unit via a cable 19. By manually squeezing the left and right blade assemblies 2, hemostasis can be achieved at the desired location. Because the forceps shaft 6 is small in diameter and strong, it does not obstruct vision and is therefore particularly suitable for neurosurgery, ENT, spinal surgery, minimally invasive microsurgery, or deep neurosurgery with small channels.

[0088] Therefore, the technical effects that can be achieved by the surgical electrocoagulation forceps device 1 of the present invention include, but are not limited to: 1. The multi-section structure of the forceps blade assembly 2 can make the diameter of the forceps rod 6 and the forceps tip 13 that enter the human body designed to be thinner. For example, the diameter of the forceps rod 6 can be 1.5mm-3mm, and the widest part will not exceed 3mm, which is only 1 / 2 of that of ordinary bipolar electrocoagulation forceps. Therefore, it is suitable for minimally invasive microsurgery with small incisions or deep surgery with small channels in neurosurgery; 2. Because the forceps rod 6 and the forceps tip 13 are hollow cylindrical (conical) in shape, the bending strength is higher than that of the punched or milled sheet-shaped forceps rod 6 with an open groove of similar size; 3. Because the diameter or volume of the part entering the human body is smaller, more instruments can be accommodated in the surgical incision channel during surgery, for example, it is suitable for use with a nasal endoscope, a ventriculoscope, an irrigation device, etc.; 4. The non-detachable fixed connection between the forceps handle 3 and the forceps rod 6 can ensure the firm connection strength between the two and prevent them from loosening during use during surgery; 5. The use of the three-way connector 23 can ensure that the two tweezers assemblies 2 obtain a consistent coolant flow rate and save an infusion tube 26. 6. The three-way connector 23 is fixed and hidden between the tweezers base 16 and the tweezers base cover 28, with a compact and beautiful structure.

[0089] Finally, it should be pointed out that the above embodiments are only used to understand and explain the present invention and do not limit the scope of protection of the present invention. For those skilled in the art, modifications can be made based on the above embodiments, and all such modifications do not depart from the scope of protection of the present invention.

Claims

1. A surgical electrocoagulation forceps device, comprising a distal end further away from an operator when in use and a proximal end closer to the operator when in use, wherein: The surgical electrocoagulation forceps device includes two tweezers assemblies, which are capable of moving between a first position away from each other and a second position close to each other, wherein each tweezers assembly has a proximal tweezers handle, a distal tweezers tip, and a tweezers rod located between the tweezers handle and the tweezers tip, wherein the tweezers handle and the tweezers rod are constructed separately from each other and are connected to each other.

2. The surgical electrocoagulation forceps device according to claim 1, characterized in that: The surgical electrocoagulation forceps device also includes a forceps seat assembly, which has a forceps seat, a forceps seat cover and a three-way joint arranged between the forceps seat and the forceps seat cover. The two forceps blade assemblies can be fixed to the forceps seat at their proximal ends respectively, and the two forceps blade assemblies can be supplied with liquid by the same infusion tube via the three-way joint.

3. The surgical electrocoagulation forceps device according to claim 1, characterized in that: The tweezers handle and the tweezers rod are non-detachably connected to each other.

4. The surgical electrocoagulation forceps device according to claim 3, characterized in that: The forceps handle is provided with a groove on its distal free end surface, and the forceps rod is placed with its proximal end in the groove and is welded or riveted to the forceps handle.

5. The surgical electrocoagulation forceps device according to claim 2, characterized in that: The tweezers seat forms a receiving groove on the lower side of its bottom wall, and the three-way joint is received in the receiving groove. The tweezers seat cover covers the three-way joint from below the receiving groove with its bottom cover.

6. The surgical electrocoagulation forceps device according to claim 5, characterized in that: The tweezers handles of the two tweezers blade assemblies are inserted into the tweezers base with their proximal ends and extend above the bottom wall of the tweezers base.

7. The surgical electrocoagulation forceps device according to claim 6, characterized in that: The bottom wall of the tweezers seat is provided with a slit, and the two capillaries extending from the proximal end of the tweezers handle away from the tweezers handle are respectively inserted into the three-way joint after passing through the slit.

8. The surgical electrocoagulation forceps device according to claim 2, characterized in that: The three-way connector has two longitudinally extending through holes, the infusion tube is sleeved on the proximal end of the three-way connector, and two capillaries extending from the proximal end of the forceps handle are respectively inserted into the distal ends of the two through holes of the three-way connector.

9. The surgical electrocoagulation forceps device according to claim 8, characterized in that: The two through holes terminate in an accommodating cavity at the distal end, and the accommodating cavity is filled with adhesive to fix the capillary tube to the three-way joint.

10. The surgical electrocoagulation forceps device according to claim 1, characterized in that: The forceps rod is cylindrical or conical and has an infusion channel centrally disposed therein. The forceps rod has a receiving cavity at its proximal end, into which a capillary extending from the distal end of the forceps handle is inserted to communicate with the infusion channel fluid.

11. The surgical electrocoagulation forceps device according to claim 10, characterized in that: The accommodating cavity is provided with a bell mouth at its proximal end, and the capillary is fixed at the bell mouth by soldering or filling with glue.

12. The surgical electrocoagulation forceps device according to claim 10, characterized in that: A sealing ring is provided between the inner wall of the accommodating cavity and the capillary tube.

13. The surgical electrocoagulation forceps device according to claim 1, characterized in that: The tweezers shaft and the tweezers tip are designed separately from each other and are connected to each other.

14. The surgical electrocoagulation forceps device according to claim 13, characterized in that: The tweezers rod has a threaded section with external threads and an adjacent reinforcement section at its distal end, and the tweezers tip has a threaded section with internal threads and an adjacent accommodation section at its proximal end. The threaded section with external threads of the tweezers rod and the threaded section with internal threads of the tweezers tip are threadedly engaged with each other, and the reinforcement section of the tweezers rod is inserted into the accommodation section of the tweezers tip.

15. The surgical electrocoagulation forceps device according to claim 13, characterized in that: The tweezers shaft and the tweezers tip are welded at their transition point.

16. The surgical electrocoagulation forceps device according to claim 2, characterized in that: The tweezers handle is provided with a receiving groove on its inner side, a capillary is embedded in the receiving groove, and the two tweezers blade assemblies can be connected to the three-way joint via the capillary respectively.

17. The surgical electrocoagulation forceps device according to claim 1, characterized in that: The tweezers assembly is sprayed with insulating paint or plastic-sprayed on most surfaces to form an insulating layer.

18. The surgical electrocoagulation forceps device according to claim 5, characterized in that: The distal end cover of the tweezers seat cover passes through between the tweezers handles of the two tweezers blade assemblies.

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