CN112168340A - Detachable electrosurgical instrument - Google Patents

Abstract

The invention provides a detachable electrosurgical instrument, which comprises a working end and a handheld end; the working end comprises a connecting assembly, and the handheld end comprises a shaft tube assembly; coupling assembling includes the elastic positioning piece, be provided with interface channel on the coupling assembling, the central siphon subassembly inserts pass through in the interface channel the elastic positioning piece location is fixed, the central siphon subassembly can be held the end by hand and actuate. According to the detachable electrosurgical instrument provided by the invention, the working end and the handheld end are in a plug-in detachable connection mode; the working end directly contacted with the tissue is used as a disposable accessory and is convenient to replace, and no professional or long-time training is needed, so that the labor cost and the use cost are reduced; and the working ends are provided by independent sterilization packages, so that safety guarantee is provided for the operation, and bacterial infection caused by instruments is effectively reduced.

Description

Detachable electrosurgical instrument

Technical Field

The invention belongs to the technical field of electrosurgical instruments, and particularly relates to a detachable electrosurgical instrument.

Background

Electrosurgical instruments, such as vaso-occlusive cutters, typically include two opposing electrodes that are chargeable to different potentials to selectively apply energy to tissue. Vascular occlusion cutters utilize mechanical clamping and electrical energy to achieve hemostasis by heating tissue and blood vessels to coagulate and/or cauterize tissue, and mechanically separate the occluded blood vessels through a mechanical cutting device contained therein. The vessel closed cutter is suitable for closed cutting of blood vessels with the diameter of no more than 7mm, such as artery/vein blood vessels, lymph vessels, tissue bundles and the like. The vascular occlusion cutter has the functions of rapidly stopping bleeding and cutting the great vessels, reduces the difficulty of ligating the vessels compared with the method of ligating the vessels by using sutures, and greatly shortens the operation time. During the use of the blood vessel closed cutter, parts contacting with human tissues are easy to be polluted, such as an electrode for clamping the closed blood vessel and the periphery of the electrode, a cutting device for cutting the closed blood vessel, and the like.

In order to avoid pollution, the vessel closing cutter is a disposable sterile medical instrument. Because the cost of the disposable sterile medical apparatus is high, the disposable sterile medical apparatus can not be used for the second time, can not be sterilized repeatedly and can not be disassembled. Accordingly, the operation cost is increased accordingly. In the prior art, the vascular occlusion cutter is repeatedly used through a detachable electrode plate, but the jaw structure is complex, the electrode plate is small in size and complex in shape, needs to be detached through a large amount of training, needs a particularly small-sized detaching tool, and is not suitable for untrained personnel and ordinary medical personnel to perform.

Disclosure of Invention

In order to solve at least one of the above technical problems, an object of the present invention is to provide a detachable electrosurgical instrument, in which a working end of the electrosurgical instrument directly contacts with tissue can be detached and replaced, and the electrosurgical instrument is convenient to operate and suitable for ordinary medical staff to perform the operation. The hand-held end of the electrosurgical instrument can be repeatedly sterilized for use, thereby greatly reducing the medical cost and saving resources.

In order to at least achieve one of the above purposes, the technical solution adopted in the embodiments provided by the present invention is: providing a detachable electrosurgical instrument comprising a working end and a hand-held end; the working end comprises a connecting assembly, and the handheld end comprises a shaft tube assembly; coupling assembling includes the elastic positioning piece, be provided with interface channel on the coupling assembling, the central siphon subassembly inserts pass through in the interface channel the elastic positioning piece location is fixed, the central siphon subassembly can be held the end by hand and actuate.

Furthermore, the connecting assembly comprises a first lock body and a second lock body, and the first lock body and the second lock body are fixedly connected and installed to form the connecting channel; the elastic positioning piece is arranged on the first lock body; the elastic positioning piece is a positioning screw with an elastic steel ball.

Further, the shaft tube assembly includes an outer shaft, an inner shaft, and a catheter tube; the outer shaft, the inner shaft and the guide pipe are sequentially coaxially sleeved from outside to inside; the working end also comprises a cutter component, and the cutter component is arranged on the shaft tube component; the cutter assembly comprises a cutter, a first check ring, a spring, a second check ring and a male head; the knife is arranged in the circular hole of the guide pipe, one end of the knife is a flat knife body, and the other end of the knife is a knife bar; the cutter bar is provided with a long drum-shaped section and a short drum-shaped section; the first check ring is clamped on the inner shaft, the second check ring is clamped on the short drum-shaped section, and the spring is arranged between the first check ring and the second check ring; the male head is fixedly connected to one end of the outer shaft, a through hole in sliding fit with the long drum-shaped section is formed in the male head, and the long drum-shaped section extends out of the male head; the spring is in a slightly compressed state, and the second retainer ring is abutted against the male head.

Further, the working end further comprises a jaw assembly, and the jaw assembly is arranged on the shaft tube assembly; the jaw assembly comprises an upper jaw and a lower jaw, an upper electrode plate is arranged in the upper jaw, and a lower electrode plate is arranged in the lower jaw; the upper jaw and the lower jaw are connected through a pin and can rotate relatively; the upper jaw and the lower jaw are provided with knife grooves, and the knife grooves can guide the knife body to move in the knife grooves.

Further, the lower jaw is fixedly connected to the other end of the outer shaft; the inner shaft extends out of the outer shaft and into the jaw assembly; the part of the inner shaft extending into the jaw assembly is provided with a first actuating shaft, the upper jaw is provided with a first strip-shaped through hole, and the first actuating shaft is connected with the first strip-shaped through hole in a sliding fit manner; when the inner shaft and the outer shaft move relatively along the axial direction, the first actuating shaft slides in the first strip-shaped through hole to drive the upper jaw to rotate relative to the lower jaw, so that the jaw assembly is opened or closed.

Further, the handheld end further comprises a shaft tube connecting rod assembly and a shell; the connecting assembly and the shaft tube connecting rod assembly are arranged in the shell; the shaft tube connecting rod assembly comprises an outer shaft connecting rod, an inner shaft connecting rod and a knife connecting rod; the outer shaft connecting rod, the inner shaft connecting rod and the knife connecting rod are sequentially coaxially sleeved from outside to inside; one end of the outer shaft connecting rod is fixedly connected with a female head; the outer shaft connecting rod is also provided with an annular groove; the first lock body and the second lock body are respectively provided with a semi-ring flange, and the two semi-ring flanges are clamped in the annular groove to fix the outer shaft connecting rod; one end of the inner shaft connecting rod is fixedly connected to the shell, and the other end of the inner shaft connecting rod is inserted into the outer shaft connecting rod; the knife connecting rod is L-shaped, the long end of the knife connecting rod can be abutted against the knife bar in the female head, and the short end of the knife connecting rod extends out of the outer shaft connecting rod and the inner shaft connecting rod; the outer shaft connecting rod and the inner shaft connecting rod are correspondingly provided with sliding grooves, and the short ends can slide in the sliding grooves.

Furthermore, two contact pins are arranged on the male head, two power lines I are led out from the contact pins through the shaft tube assembly, and the two power lines I are respectively connected with the upper electrode plate and the lower electrode plate; two jacks are arranged on the female head, and the two contact pins can be inserted into the jacks; two power lines II are led out from the jack through the shaft tube connecting rod assembly, and are respectively connected with the positive electrode and the negative electrode of a power supply; after the male head and the female head are oppositely inserted, an electric connection can be formed.

Further, the handheld end further comprises a rotating assembly disposed within the housing, the rotating assembly comprising a rotating wheel and a stop; a portion of the rotator wheel extends out of the housing; the rotating wheel is fixedly connected to the outer shaft connecting rod; the rotating wheel is also provided with a stop protrusion, and the shell is provided with a stop piece; the stopper rotatably limits the stopper protrusion.

Further, the hand-held end further comprises a cutting actuation assembly disposed within the housing; the cutting actuating assembly comprises a cutting key, a knife driving shaft sleeve and a second actuating shaft; the cutting key comprises two fork surfaces and a rotating part; the first bosses are arranged on two sides of the middle of the rotating part and clamped on the shell, and part of the rotating part extends out of the shell; the cutter driving shaft sleeve is arranged in the two fork surfaces, sleeved on the outer shaft connecting rod and capable of sliding on the outer shaft connecting rod; the knife driving shaft sleeve is also provided with a second actuating shaft, two strip-shaped through holes II are formed in the two fork surfaces, and the second actuating shaft can slide in the strip-shaped through holes II; and a clamping groove is also formed in the knife driving shaft sleeve, and the short end of the knife connecting rod is clamped in the clamping groove.

Further, the hand-held end further comprises a jaw actuation assembly disposed within the housing; the jaw actuating assembly comprises a handle, a handle connecting rod, a handle driving shaft sleeve, an actuating shaft III, an actuating shaft IV, a torsion spring and an elastic sheet; the handle is provided with a second boss, is clamped on the shell through the second boss and rotates by taking the second boss as a rotating point; one end of the handle connecting rod is provided with a third actuating shaft, and the third actuating shaft is connected with a third strip-shaped through hole arranged on the handle in a sliding fit manner; the other end of the handle connecting rod is provided with a bar-shaped through hole IV which is connected with the actuating shaft IV arranged on the handle driving shaft sleeve in a sliding fit manner; the handle driving shaft sleeve is fixedly connected to the outer shaft connecting rod; the torsion spring is arranged on the shell, one end of the torsion spring is fixedly connected with the handle, and the other end of the torsion spring is fixedly connected with the shell; the middle part of the elastic sheet is provided with a through hole, the outer shaft connecting rod penetrates through the through hole, and two ends of the elastic sheet are clamped in fixing grooves of the shell; the elastic sheet is abutted against the handle driving shaft sleeve.

Compared with the prior art, the detachable electrosurgical instrument provided by the invention has the beneficial effects that:

according to the detachable electrosurgical instrument provided by the invention, the working end and the handheld end are in a plug-in detachable connection mode; the working end directly contacted with the tissue is used as a disposable accessory and is convenient to replace, and no professional or long-time training is needed, so that the labor cost and the use cost are reduced; and the working ends are provided by independent sterilization packages, so that safety guarantee is provided for the operation, and bacterial infection caused by instruments is effectively reduced.

According to the detachable electrosurgical instrument, the hand-held end adopts appropriate sterilization modes such as ozone sterilization and the like, so that the use frequency of the hand-held part can reach 100 times, and the use cost is reduced;

in summary, the present invention provides a detachable electrosurgical instrument with simple structure, easy replacement and operation, and low cost, which has a wide application prospect in the field of electrosurgical instruments.

Drawings

FIG. 1 is a schematic view of the overall structure of a detachable electrosurgical instrument provided in accordance with an embodiment of the present invention;

FIG. 2 is a schematic view of a detachable electrosurgical instrument provided in accordance with an embodiment of the present invention in an detached state;

FIG. 3 is an exploded view of a working end provided by an embodiment of the present invention;

FIG. 4 is a schematic structural view of a jaw assembly provided by an embodiment of the present invention;

FIG. 5 is a schematic view of a portion of the construction of the axle tube assembly provided by the embodiment of the present invention;

FIG. 6 is a cross-sectional structural view of the axle tube assembly provided by the embodiment of the present invention; (ii) a

FIG. 7 is a schematic view of a partial structure of a tool bar provided in an embodiment of the present invention;

FIG. 8 is a schematic diagram of a partial internal structure of a working end provided in an embodiment of the present invention;

FIG. 9 is a first schematic diagram illustrating an internal structure of a handheld device according to an embodiment of the present invention;

fig. 10 is an exploded view of a connection assembly provided by an embodiment of the present invention;

fig. 11 is a schematic view of an internal structure of a connecting assembly according to an embodiment of the present invention;

FIG. 12 is a schematic structural diagram of a male connector according to an embodiment of the present invention;

FIG. 13 is a schematic structural diagram of a female head provided by an embodiment of the present invention;

fig. 14 is a schematic view showing an internal structure of the shaft tube connecting rod assembly according to the embodiment of the present invention;

FIG. 15 is a schematic structural view of a cutting actuator assembly provided in accordance with an embodiment of the present invention;

FIG. 16 is a second schematic view of the internal structure of the handheld terminal according to the embodiment of the present invention;

fig. 17 is a schematic view of the internal structure of the handle of the handheld end of the present invention after being pulled.

Wherein the reference numerals are as follows:

1 working end, 11 jaw assemblies, 111 upper jaw, 112 lower jaw, 113 upper electrode plate, 114 lower electrode plate, 115 pin, 116 knife groove, 117 bar-shaped through hole I, 12 shaft tube assembly, 121 outer shaft, 1211 positioning groove, 122 inner shaft, 123 conduit, 124 actuating shaft I, 13 knife assembly, 131 knife, 1311 long drum-shaped section, 1312 short drum-shaped section, 132 retaining ring I, 133 spring, 134 retaining ring II, 135 male head, 1351 inserting needle;

2, a handheld end, a 21 connection assembly, a 211 lock body i, a 212 lock body ii, a 213 connection channel, a 214 half-ring flange, a 215 elastic positioning element, a 22-shaft tube connection assembly, a 221 outer shaft connection rod, a 2211 annular groove, a 222 inner shaft connection rod, a 223 knife connection rod, a 224 female head, a 2241 hole, a 2242 jack, a 23 rotation assembly, 231 rotation wheels, 2311 stop protrusions, 232 stop members, a 24 cutting actuation assembly, a 241 cutting button, a 2411 boss i, a 2412 strip through hole ii, a 242 knife driving shaft sleeve, a 2421 clamping groove, a 243 actuation shaft ii, a 25 jaw actuation assembly, a 251 handle, a 2511 boss ii, a 2512 strip through hole iii, a 252 handle connection rod, a 2521 strip through hole iv, a 253 handle driving shaft sleeve, a 254 actuation shaft iii, a 255 actuation shaft iv, a 256 torsion spring, a 257 elastic sheet, a 26 electric energy assembly, a 261 power supply and identification module 262, an energy excitation.

Detailed Description

In order to make the technical solutions of the present invention better understood by those skilled in the art, the present invention will be further described in detail with reference to specific examples. Note that the following described embodiments are illustrative only for explaining the present invention, and are not to be construed as limiting the present invention. The examples, where specific techniques or conditions are not indicated, are to be construed according to the techniques or conditions described in the literature in the art or according to the product specifications.

In the description of the present invention, it is to be understood that the terms "first", "second" and the like are used for descriptive purposes only and are not to be construed as indicating or implying relative importance or implying any number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include one or more of that feature. In the description of the present invention, "a plurality" means two or more unless specifically defined otherwise.

In the present invention, unless otherwise expressly stated or limited, the terms "mounted," "connected," "secured," and the like are to be construed broadly and can, for example, be fixedly connected, detachably connected, or integrally formed; can be mechanically or electrically connected; either directly or indirectly through intervening media, either internally or in any other relationship. The specific meanings of the above terms in the present invention can be understood by those skilled in the art according to specific situations.

The detachable electrosurgical instrument according to the invention will be described in detail below by way of specific embodiments:

as shown in fig. 1-17, the detachable electrosurgical instrument includes a working end 1 and a hand-held end 2; the working end 1 and the handheld end 2 are detachably connected in a plugging mode. The working end 1 is used for directly contacting with human tissues and blood vessels to carry out operation; the hand-held end 2 is used for an operator to hold and actuate the working end 1 to trigger a surgical operation during a surgical process.

The working end 1 comprises a jaw assembly 11, a shaft tube assembly 12, a knife assembly 13 and other parts; the jaw assembly 11 and knife assembly 13 are disposed on the shaft tube assembly 12. The jaw assembly 11 comprises an upper jaw 111 and a lower jaw 112, wherein an upper electrode plate 113 is arranged in the upper jaw 111, and a lower electrode plate 114 is arranged in the lower jaw 112; the upper jaw 111 and the lower jaw 112 are connected by a pin 115 to form the jaw assembly 11, the upper jaw 111 and the lower jaw 112 can rotate relative to each other by the pin 115, and a knife slot 116 is further disposed on the upper jaw 111 and the lower jaw 112, and after the upper jaw 111 and the lower jaw 112 are closed, the knife slot 116 can allow a knife to bend and move therein.

The shaft tube assembly 12 includes components such as an outer shaft 121, an inner shaft 122, and a guide tube 123. The outer shaft 121, the inner shaft 122 and the conduit 123 are coaxially sleeved from outside to inside in sequence. The lower jaw 112 is fixedly attached to one end of the outer shaft 121 by welding or adhesive or the like. One end of the inner shaft 122 extends out of the outer shaft 121, and the extended portion is provided with an actuating shaft one 124 and extends into the jaw assembly 11. The upper jaw 111 is provided with a first strip-shaped through hole 117, and the first actuating shaft 124 is connected with the first strip-shaped through hole 117. When the inner shaft 122 is moved in the opposite direction to the outer shaft 121, the actuation shaft 124, which passes through the hole 117, drives the upper jaw 111 to rotate relative to the lower jaw 112, so that the jaw assembly 11 can be opened or closed.

The knife assembly comprises a knife 131, a first retainer ring 132, a spring 133, a second retainer ring 134, a male head 135 and the like. The knife 131 is disposed in the circular hole of the conduit 123, one end of the knife 131 is a flat stainless steel knife body, and the other end is a stainless steel knife bar. The stainless steel tool bar is provided with a long drum section 1311 and a short drum section 1312, wherein the long drum section 1311 is provided at the edge of the stainless steel bar and the short drum section 1312 is arranged at a distance from the long drum section 1311. The first retainer ring 132 is clamped on the inner shaft 122, the second retainer ring 134 is clamped on the short drum-shaped section 1312, and the spring 133 is arranged between the first retainer ring 132 and the second retainer ring 134. The male head 135 is provided with a through hole which is in sliding fit with the long drum-shaped section 1311, the male head 135 is fixedly connected to the outer shaft 121 through hot melting or hot riveting and the like, and the long drum-shaped section 1311 extends out of the male head 135. The spring 133 is in a slightly compressed state, abutting the second collar 134 against said male head 135.

When the knife 131 is actuated to move close to the jaw assembly 11 along the axial direction of the shaft tube assembly 12, the stainless steel knife body is forced to enter the knife groove 116 of the jaw assembly 11 by using the self elastic deformation, and the stainless steel knife body slides along the knife groove 116 in a bending way; at the same time, the second retainer ring 134 is actuated by the short drum-shaped section 1312 to move together, and the spring 133 is compressed due to the first retainer ring 132 being clamped on the inner shaft 122. When the driving force of the actuating blade 131 disappears, the spring 133 resets the blade 131. The short drum section 1312 and the long drum section 1311 also act in synchronism, i.e. the parts mounted on the stainless steel tool shank rotate with it when it rotates about its axis.

The hand-held end 2 of the detachable electrosurgical instrument includes components such as a coupling assembly 21, a shaft tube linkage assembly 22, a rotation assembly 23, a cutting actuation assembly 24, a jaw actuation assembly 25, an electrical energy assembly 26, and a housing 27. The connecting assembly 21 is arranged in the shell 27, the connecting assembly 21 comprises a first lock body 211 and a second lock body 212 which are connected through screws and form a connecting channel 213, and the shaft tube assembly 12 of the working end 1 and the shaft tube connecting assembly 22 of the handheld end 2 can be inserted into the connecting channel 213 for connection.

The axle tube linkage assembly 22 includes components such as an outer shaft link 221, an inner shaft link 222, a knife link 223, and a female head 224. The outer shaft connecting rod 221, the inner shaft connecting rod 222 and the knife connecting rod 223 are coaxially sleeved from outside to inside in sequence. The edge of one end of the outer shaft connecting rod 221 is provided with a female head 224, and the outer shaft connecting rod 221 is fixedly connected with the female head 224 through hot melting or hot riveting and the like. The outer shaft connecting rod 221 is also provided with an annular groove 2211; the first lock body 211 and the second lock body 212 are respectively provided with a half collar flange 214, and the two half collar flanges 214 are clamped in the annular groove 2211 to fix the outer shaft connecting rod 221. The inner shaft link 222 is attached at one end to the housing 27 and at the other end is inserted into the outer shaft link 221.

The first lock body 211 is provided with an elastic positioning element 215, and the outer shaft 121 is provided with a positioning groove 1211. After the shaft tube assembly 12 is inserted into the connection channel 213, the elastic positioning member 215 is snapped into the positioning slot 1211, so as to position the shaft tube assembly 12 on the connection assembly 21; the elastic positioning member 215 is preferably a positioning screw with an elastic steel ball. After the shaft tube assembly 12 is inserted into the connecting passage 213, the male portion 135 is connected to the female portion 224, and the long drum-shaped section 1311 of the stainless steel blade bar is inserted into the hole 2241 of the female portion 224, which is matched with the long drum-shaped section.

The male and female heads 135 and 224 have directionality when connected. The male head 135 is provided with two pins 1351, and two power wires one are led out from the pins 1351 into the shaft tube assembly 12, and are respectively connected with the upper electrode plate 113 and the lower electrode plate 114. Two jacks 2242 are arranged in the female head 224, two pins 1351 can be inserted into the jacks 2242, two power lines II are led out from the jacks 2242 to the shaft tube connecting rod assembly 22, and the two power lines II are respectively connected with the positive electrode and the negative electrode of a power supply. After the male tab 135 is inserted into the female tab 224, when power is applied, an electrical connection is formed between the male tab 135 and the female tab 224, and power is transmitted to the upper electrode plate 113 and the lower electrode plate 114.

The knife link 223 is "L" shaped, with the long end of the knife link 223 abutting the knife 131 within the female head 224 and the short end of the knife link 223 extending beyond the outer shaft link 221 and the inner shaft link 222. The outer and inner shaft links 221 and 222 are correspondingly provided with a length of slide slot in which the short end of the knife link can slide.

The rotating assembly 23 includes a rotation wheel 231 and a stopper 232. The rotating wheel 231 is fixed on the outer shaft link 221 through a set screw, and when the rotating wheel 231 is actuated to rotate, the outer shaft link 221 is driven to rotate together; in addition, since the female head 224 is fixedly connected with the outer shaft connecting rod 221, the working end 1 is actuated to rotate along by the female head 224. The rotation wheel 231 is further provided with a stopper protrusion 2311, and is engaged with a stopper 232 provided on the housing 27 to limit the rotation of the rotation wheel 231.

The cutting actuator assembly 24 includes a cutting button 241, a knife drive sleeve 242, and an actuator shaft 243. The cutting key 241 is a Y-like fork structure, and includes two fork surfaces and a rotating member. Boss 2411 is arranged on two sides of the middle part of the rotating part, the boss 2411 is clamped on the shell 27, and part of the rotating part extends out of the shell 27. The knife driving shaft sleeve 242 is provided in the two fork surfaces and is fitted over the outer shaft link 221 so as to be slidable on the outer shaft link 221. The knife driving shaft sleeve 242 is provided with a second actuating shaft 243, two fork surfaces are correspondingly provided with two strip-shaped through holes 2412, and the second actuating shaft 243 can slide in the second strip-shaped through holes 2412. When the rotating member outside the housing is pulled, the cutting button 241 rotates, and the second actuating shaft 243 and the second knife driving sleeve 242 are driven by the second strip-shaped through hole 2412 to slide along the outer shaft connecting rod 221. A clamping groove 2421 is further formed in the knife driving shaft sleeve 242, and the short end of the knife connecting rod 223 is clamped in the clamping groove 2421. When the knife driving sleeve 242 slides, the knife 131 is driven to move toward the jaw assembly 11 by the knife link 223.

The jaw actuating assembly 25 includes a handle 251, a handle link 252, a handle driving bushing 253, an actuating shaft three 254, an actuating shaft four 255, a torsion spring 256, and a resilient tab 257. The handle 251 is provided with a second boss 2511, and the handle is clamped on the shell 27 through the second boss 2511 and rotates by taking the second boss 2511 as a rotating point. An actuating shaft III 254 is arranged at one end of the handle connecting rod 252, and the actuating shaft III 254 is connected with a strip-shaped through hole III 2512 arranged on the handle 251 in a sliding fit manner. The other end of the handle link 252 is provided with a bar-shaped through hole four 2521, and the bar-shaped through hole four 2521 is connected with an actuating shaft four 255 arranged on the handle driving shaft sleeve 253 in a sliding fit manner. The handle driving bushing 253 is fixedly connected to the outer shaft connecting rod 221 by a set screw and moves together with the outer shaft connecting rod 221.

The torsion spring 256 is sleeved on the protrusion of the shell 27, one end of the torsion spring is fixedly connected with the handle 251, and the other end of the torsion spring is fixedly connected on the shell 27; the torsion spring 256 provides a restoring force to the handle 251. The middle part of the elastic piece 257 is provided with a through hole, and the two ends are clamped in the fixing grooves on the shell 27; the outer shaft link 221 is inserted into the through hole. The resilient tab 257 abuts the handle drive bushing 253 and is in a slightly compressed state.

When the handle 251 is pulled, the handle 251 rotates, the handle driving shaft sleeve 253 is actuated by the handle connecting rod 252 to move towards the elastic piece 257, and the handle driving shaft sleeve 253 drives the outer shaft connecting rod 221 to slide on the inner shaft connecting rod 222; the torsion spring 256 and the resilient piece 257 are pressed to generate an elastic force. Since the outer shaft link 221 is connected to the outer shaft 121 via the connecting assembly 21, the outer shaft 121 moves relative to the inner shaft 122 toward the handheld end 2. The lower jaw 112 fixed to the outer shaft 121 moves the upper jaw 111 together with the pin 115 to the handheld end 2, and since the inner shaft 122 is fixed, the upper jaw 111 is rotated toward the lower jaw 112 by actuating the first shaft 124 until the jaw assembly 11 is closed. After the handle 251 is released, the torsion spring 256 and the resilient plate 257 provide a resilient force to return the jaw assembly 11 to the open position through the transmission.

The electric energy assembly 26 includes a power supply and identification module 261, an energy activation button 262, a spring buckle 263, and the like. The power supply and identification module 261 is disposed in the holding portion of the handheld end 2 and disposed in the housing 27 through the spring buckle 263 and the cover 271. The cover 271 is fastened to the housing 27 by means of a latch, and when the cover 271 is opened, the power supply and identification module 261 is automatically ejected out for a certain distance under the action of the spring fastener 263, so that the user can replace the power supply and identification module 261. The power supply and identification module 261 implements electrical signal transmission with the surgical energy device, and may implement electrical signal monitoring, energy transmission control, instrument information interactive identification, timing, and the like. An energy activated button 262 is disposed on the housing 27 and is depressible by squeezing the handle 251. The second power line led out from the female head 224 is connected with the power supply and identification module 261 through the energy excitation key 262.

When the handle 251 is pulled, the jaw assembly 11 is closed, and the energy excitation key 262 is pressed by the handle 251 to be conducted, and the electric energy is transmitted to the upper electrode plate 113 and the lower electrode plate 114 of the jaw assembly 11, so that bipolar electrodes with potential difference are formed. Electrical energy is applied to the tissue held by the jaw assembly 11 to coagulate and/or cauterize the tissue. The handle 251 is held tightly and the cutting button 251 is pulled to mechanically separate the closed blood vessel. After cutting, the cutting key 241 is released, and the cutting key 241 is reset under the action of the spring 133; then the handle 251 is released, and the handle 251 is reset under the action of the elastic piece 257 and the torsion spring 256. The resilient tab 257 may provide a closing force to the jaw assembly 11 in addition to providing a return resilient force to the handle 251. During depression of energy-activated button 262 by handle 251, outer shaft link 221 continues to compress spring 257, but since jaw assembly 11 is now closed, the force transmitted from spring 257 to outer shaft 121 and actuation shaft one 124 is transmitted as a compressive force to jaw assembly 11, causing upper jaw 111 and lower jaw 112 to grip tissue tightly.

In summary, the working end and the hand-held end of the detachable electrosurgical instrument provided by the invention are detachably connected in a plugging manner. When the jaw assembly is disassembled, the working end and the holding end can be separated only by holding the outer shaft of the working end by hand and pulling the outer shaft to the jaw assembly with certain force along the length direction of the outer shaft; and then the new working end is inserted into the handheld end, so that the replacement process can be completed. The working end is packaged into an independent package for ethylene oxide sterilization, and the packaging bag is disposable, is convenient for medical staff to use and can avoid pollution. The hand-held end can be sterilized by ozone, and the material of the parts of the hand-held end is preferably a material suitable for ozone sterilization, such as PC, PP, PA, ceramic, stainless steel and other materials with good biocompatibility, so as to ensure that the sterilization frequency can reach more than 100 times.

According to the detachable electrosurgical instrument provided by the invention, the working end and the handheld end are in a plug-in detachable connection mode; the working end directly contacted with the tissue is used as a disposable accessory and is convenient to replace, and no professional or long-time training is needed, so that the labor cost and the use cost are reduced; and the working ends are provided by independent sterilization packages, so that safety guarantee is provided for the operation, and bacterial infection caused by instruments is effectively reduced.

According to the detachable electrosurgical instrument, the hand-held end adopts appropriate sterilization modes such as ozone sterilization and the like, so that the use frequency of the hand-held part can reach 100 times, and the use cost is reduced;

in summary, the present invention provides a detachable electrosurgical instrument with simple structure, easy replacement and operation, and low cost, which has a wide application prospect in the field of electrosurgical instruments. In the present invention, unless otherwise expressly stated or limited, the first feature "on" or "under" the second feature may be directly contacting the first and second features or indirectly contacting the first and second features through an intermediate. Also, a first feature "on," "over," and "above" a second feature may be directly or diagonally above the second feature, or may simply indicate that the first feature is at a higher level than the second feature. A first feature being "under," "below," and "beneath" a second feature may be directly under or obliquely under the first feature, or may simply mean that the first feature is at a lesser elevation than the second feature.

In the description herein, references to the description of the term "one embodiment," "some embodiments," "an example," "a specific example," or "some examples," etc., mean that a particular feature, structure, material, or characteristic described in connection with the embodiment or example is included in at least one embodiment or example of the invention. In this specification, the schematic representations of the terms used above are not necessarily intended to refer to the same embodiment or example. Furthermore, the particular features, structures, materials, or characteristics described may be combined in any suitable manner in any one or more embodiments or examples. Moreover, various embodiments or examples and features of various embodiments or examples described in this specification can be combined and combined by one skilled in the art without contradiction.

Claims (10)

1. A detachable electrosurgical instrument comprising a working end and a hand-held end; the method is characterized in that: the working end comprises a connecting assembly, and the handheld end comprises a shaft tube assembly; coupling assembling includes the elastic positioning piece, be provided with interface channel on the coupling assembling, the central siphon subassembly inserts pass through in the interface channel the elastic positioning piece location is fixed, the central siphon subassembly can be held the end by hand and actuate.

2. The detachable electrosurgical instrument of claim 1, wherein: the connecting assembly comprises a first lock body and a second lock body, and the first lock body and the second lock body are fixedly connected and installed to form the connecting channel; the elastic positioning piece is arranged on the first lock body; the elastic positioning piece is a positioning screw with an elastic steel ball.

3. The detachable electrosurgical instrument of claim 2, wherein: the shaft tube assembly comprises an outer shaft, an inner shaft and a guide tube; the outer shaft, the inner shaft and the guide pipe are sequentially coaxially sleeved from outside to inside; the working end also comprises a cutter component, and the cutter component is arranged on the shaft tube component; the cutter assembly comprises a cutter, a first check ring, a spring, a second check ring and a male head; the knife is arranged in the circular hole of the guide pipe, one end of the knife is a flat knife body, and the other end of the knife is a knife bar; the cutter bar is provided with a long drum-shaped section and a short drum-shaped section; the first check ring is clamped on the inner shaft, the second check ring is clamped on the short drum-shaped section, and the spring is arranged between the first check ring and the second check ring; the male head is fixedly connected to one end of the outer shaft, a through hole in sliding fit with the long drum-shaped section is formed in the male head, and the long drum-shaped section extends out of the male head; the spring is in a slightly compressed state, and the second retainer ring is abutted against the male head.

4. The detachable electrosurgical instrument of claim 3, wherein: the working end also comprises a jaw assembly, and the jaw assembly is arranged on the shaft tube assembly; the jaw assembly comprises an upper jaw and a lower jaw, an upper electrode plate is arranged in the upper jaw, and a lower electrode plate is arranged in the lower jaw; the upper jaw and the lower jaw are connected through a pin and can rotate relatively; the upper jaw and the lower jaw are provided with knife grooves, and the knife grooves can guide the knife body to move in the knife grooves.

5. The detachable electrosurgical instrument of claim 4, wherein: the lower jaw is fixedly connected to the other end of the outer shaft; the inner shaft extends out of the outer shaft and into the jaw assembly; the part of the inner shaft extending into the jaw assembly is provided with a first actuating shaft, the upper jaw is provided with a first strip-shaped through hole, and the first actuating shaft is connected with the first strip-shaped through hole in a sliding fit manner; when the inner shaft and the outer shaft move relatively along the axial direction, the first actuating shaft slides in the first strip-shaped through hole to drive the upper jaw to rotate relative to the lower jaw, so that the jaw assembly is opened or closed.

6. The detachable electrosurgical instrument of claim 5, wherein: the handheld end further comprises a shaft tube connecting rod assembly and a shell; the connecting assembly and the shaft tube connecting rod assembly are arranged in the shell; the shaft tube connecting rod assembly comprises an outer shaft connecting rod, an inner shaft connecting rod and a knife connecting rod; the outer shaft connecting rod, the inner shaft connecting rod and the knife connecting rod are sequentially coaxially sleeved from outside to inside; one end of the outer shaft connecting rod is fixedly connected with a female head; the outer shaft connecting rod is also provided with an annular groove; the first lock body and the second lock body are respectively provided with a semi-ring flange, and the two semi-ring flanges are clamped in the annular groove to fix the outer shaft connecting rod; one end of the inner shaft connecting rod is fixedly connected to the shell, and the other end of the inner shaft connecting rod is inserted into the outer shaft connecting rod; the knife connecting rod is L-shaped, the long end of the knife connecting rod can be abutted against the knife bar in the female head, and the short end of the knife connecting rod extends out of the outer shaft connecting rod and the inner shaft connecting rod; the outer shaft connecting rod and the inner shaft connecting rod are correspondingly provided with sliding grooves, and the short ends can slide in the sliding grooves.

7. The detachable electrosurgical instrument of claim 6, wherein: two contact pins are arranged on the male head, two power lines I are led out from the contact pins through the shaft tube assembly, and the two power lines I are respectively connected with the upper electrode plate and the lower electrode plate; two jacks are arranged on the female head, and the two contact pins can be inserted into the jacks; two power lines II are led out from the jack through the shaft tube connecting rod assembly, and are respectively connected with the positive electrode and the negative electrode of a power supply; after the male head and the female head are oppositely inserted, an electric connection can be formed.

8. The detachable electrosurgical instrument of claim 7, wherein: the handheld end further comprises a rotating assembly, the rotating assembly is arranged in the shell and comprises a rotating wheel and a stop piece; a portion of the rotator wheel extends out of the housing; the rotating wheel is fixedly connected to the outer shaft connecting rod; the rotating wheel is also provided with a stop protrusion, and the shell is provided with a stop piece; the stopper rotatably limits the stopper protrusion.

9. The detachable electrosurgical instrument of claim 8, wherein: the hand-held end further comprises a cutting actuation assembly disposed within the housing; the cutting actuating assembly comprises a cutting key, a knife driving shaft sleeve and a second actuating shaft; the cutting key comprises two fork surfaces and a rotating part; the first bosses are arranged on two sides of the middle of the rotating part and clamped on the shell, and part of the rotating part extends out of the shell; the cutter driving shaft sleeve is arranged in the two fork surfaces, sleeved on the outer shaft connecting rod and capable of sliding on the outer shaft connecting rod; the knife driving shaft sleeve is also provided with a second actuating shaft, two strip-shaped through holes II are formed in the two fork surfaces, and the second actuating shaft can slide in the strip-shaped through holes II; and a clamping groove is also formed in the knife driving shaft sleeve, and the short end of the knife connecting rod is clamped in the clamping groove.

10. The detachable electrosurgical instrument of claim 9, wherein: the handheld end further includes a jaw actuation assembly disposed within the housing; the jaw actuating assembly comprises a handle, a handle connecting rod, a handle driving shaft sleeve, an actuating shaft III, an actuating shaft IV, a torsion spring and an elastic sheet; the handle is provided with a second boss, is clamped on the shell through the second boss and rotates by taking the second boss as a rotating point; one end of the handle connecting rod is provided with a third actuating shaft, and the third actuating shaft is connected with a third strip-shaped through hole arranged on the handle in a sliding fit manner; the other end of the handle connecting rod is provided with a bar-shaped through hole IV which is connected with the actuating shaft IV arranged on the handle driving shaft sleeve in a sliding fit manner; the handle driving shaft sleeve is fixedly connected to the outer shaft connecting rod; the torsion spring is arranged on the shell, one end of the torsion spring is fixedly connected with the handle, and the other end of the torsion spring is fixedly connected with the shell; the middle part of the elastic sheet is provided with a through hole, the outer shaft connecting rod penetrates through the through hole, and two ends of the elastic sheet are clamped in fixing grooves of the shell; the elastic sheet is abutted against the handle driving shaft sleeve.

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