Surgical operating instrument

Abstract

The application relates to the technical field of medical instruments, in particular to a surgical operating instrument. The surgical operating instrument comprises a tube assembly, an operating mechanism and a rotary transmission mechanism; the tube assembly is provided with a tube cavity; the operating mechanism is connected to the distal end of the tube assembly; the rotary transmission mechanism is installed on the tube assembly; the rotary transmission mechanism comprises a rotating base, a rotating piece, a first steel wire and a second steel wire, the rotating base is fixedly connected to the tube assembly; one of the rotating base and the rotating piece is provided with a first sliding groove extending spirally along the tube cavity axis direction, and the other is provided with a first sliding part slidingly connected to the groove wall of the first sliding groove; the proximal end of the rotating piece is connected to the first steel wire, the first steel wire is used for pushing and pulling the rotating piece along the tube cavity axis, and the second steel wire is arranged at least between the rotating piece and the operating mechanism to drive the operating mechanism to rotate when the first steel wire moves. Through the cooperation of the first steel wire and the first sliding groove, the movement of the first steel wire is converted into the rotation of the rotating piece, the torque transmission efficiency is high, and the operation is labor-saving.

Description

Technical Field

[0001] This application relates to the field of medical device technology, and in particular to a surgical instrument. Background Technology

[0002] Endoscopes have working channels for mounting various surgical instruments. The endoscope can insert these instruments into the body to perform procedures such as tissue cutting and hemostasis. Surgical instruments typically consist of an actuator, a tube, and a handle, with the tube connecting the handle and the actuator. During operation, the actuator usually needs to rotate according to the tissue condition. Adjusting the rotation angle requires rotating the handle and tube as a whole, which in turn rotates the actuator. However, this method results in high torque loss, significant friction between the tube and the endoscope's working channel, and requires high tube rigidity, making instrument manipulation difficult. Utility Model Content

[0003] Therefore, it is necessary to provide a surgical instrument to improve torque transmission efficiency, make the end effector rotation easier, and make the surgical instrument more convenient to use.

[0004] The surgical instrument includes a tubular assembly, an operating mechanism, and a rotary transmission mechanism. The tubular assembly has a lumen. The operating mechanism is connected to the distal end of the tubular assembly. The rotary transmission mechanism is mounted on the tubular assembly. The rotary transmission mechanism includes a rotating base, a rotating component, a first steel wire, and a second steel wire. The rotating base is fixedly connected to the tubular assembly. One of the rotating base and the rotating component has a first groove extending spirally along the axis of the lumen, and the other has a first sliding portion slidably connected to the wall of the first groove. The proximal end of the rotating component is connected to the first steel wire, which is used to push and pull the rotating component along the axis of the lumen. The second steel wire is at least located between the rotating component and the operating mechanism to drive the operating mechanism to rotate when the first steel wire moves.

[0005] Understandably, by pushing and pulling the first steel wire, the force is transmitted to the rotating component. The rotating component moves along the extension direction of the first sliding groove through the sliding connection between the first sliding part and the first sliding groove. Since the first sliding groove extends spirally along the axis of the tube, the movement of the first steel wire is converted into the rotation of the rotating component. The rotating component is connected to the operating mechanism through the second steel wire, thereby driving the operating mechanism to rotate. Throughout the process, only the first steel wire needs to be pushed and pulled, and the first sliding groove converts the movement of the first steel wire into the rotation of the rotating component, eliminating the need to tighten the entire tube assembly. This results in higher torque transmission efficiency, less effort required for operation, and more convenient use of surgical instruments.

[0006] In one embodiment, the rotary transmission mechanism includes at least two second steel wires, which are spaced apart.

[0007] In one embodiment, along the radial direction of the lumen, the projection of the first wire along the axial direction of the lumen is provided between the projections of the two second wires along the axial direction of the lumen.

[0008] In one embodiment, the rotating member is provided with a limiting hole, the second steel wire passes through the limiting hole and is provided with a limiting surface, the limiting surface abuts against the hole wall of the limiting hole along the circumference of the cavity, so as to restrict the second steel wire from rotating in the limiting hole.

[0009] In one embodiment, along the radial direction of the cavity, the limiting hole includes a circular hole segment and a limiting segment communicating with the circular hole segment, the limiting segment extending radially along the cavity;

[0010] The second steel wire includes a steel wire body and a limiting part connected to the steel wire body. The steel wire body passes through the circular hole section, and the limiting part passes through the limiting section. The limiting part has a limiting surface that abuts against the hole wall of the limiting hole.

[0011] In one embodiment, the first groove extends spirally along the axis of the cavity at an angle of α, where 30°≤α≤720°.

[0012] In one embodiment, the surgical instrument further includes a handle assembly, which includes a first handle body and a first push-pull member. The first handle body has a first moving channel communicating with the lumen. A first steel wire passes through the first moving channel and is connected to the first push-pull member. The first push-pull member passes through the first moving channel and is slidably connected to the first handle body.

[0013] In one embodiment, the proximal end of the first push-pull member extends from the first moving channel, and the distal end of the first push-pull member is provided with a mating part;

[0014] The handle assembly includes a locking structure installed at the proximal end of the first handle body. The distal end of the locking structure forms a movable locking part, and the proximal end forms a movable pressing part. The locking structure switches the locking state of the locking part and the mating part by moving the pressing part.

[0015] In one embodiment, the locking part is provided with a first engaging tooth, and the mating part is provided with a second engaging tooth. The first engaging tooth and the second engaging tooth can mesh with each other and form a limiting lock along the axial direction of the first moving channel.

[0016] In one embodiment, the operating mechanism includes an operating base mounted on the pipe assembly, an operating support mounted on the operating base, an operating arm, and a connecting arm.

[0017] The operating support is inserted through the operating base and extends from the far end of the operating base. The operating arm is located at the far end of the operating base and is rotatably connected to the operating support. The operating arm is set at an angle to the operating support. The operating arm and the operating support are slidably connected to the connecting arm. The proximal end of the connecting arm is connected to the far end of the second steel wire.

[0018] The handle assembly further includes a second handle body and a second push-pull member. The second handle body is connected to the first handle body. The second handle body is provided with a second moving channel communicating with the first moving channel. The axis of the first moving channel and the axis of the second moving channel are set at an angle. The second push-pull member is slidably connected to the second handle body.

[0019] The second steel wire passes through the rotating member, and the proximal end of the second steel wire passes through the second moving channel and is connected to the second push-pull member. Attached Figure Description

[0020] To more clearly illustrate the technical solutions in the embodiments of this application or the conventional technology, the drawings used in the description of the embodiments or the conventional technology will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this application. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0021] Figure 1 A schematic diagram of the surgical instrument provided in this application;

[0022] Figure 2 for Figure 1 A magnified view of a section at point A in the middle;

[0023] Figure 3 An exploded view of the rotary transmission mechanism in the surgical instrument provided in this application;

[0024] Figure 4 A schematic diagram of the rotating component in the surgical instrument provided in this application;

[0025] Figure 5 Schematic diagrams of the rotating components in three different embodiments of the surgical instruments provided in this application;

[0026] Figure 6 A schematic diagram of the handle assembly of one embodiment of the surgical instrument provided in this application;

[0027] Figure 7 A cross-sectional view of the handle assembly of one embodiment of the surgical instrument provided in this application;

[0028] Figure 8 A partial cross-sectional enlarged view of the handle assembly of one embodiment of the surgical instrument provided in this application;

[0029] Figure 9 A partial enlarged sectional view of the rotary transmission mechanism in the surgical instrument provided in this application;

[0030] Figure 10 A schematic diagram of the operating mechanism of one embodiment of the surgical instrument provided in this application;

[0031] Figure 11 An exploded view of the operating mechanism of one embodiment of the surgical instrument provided in this application;

[0032] Figure 12 A partial cross-sectional view of the handle assembly of another embodiment of the surgical instrument provided in this application.

[0033] Reference numerals: 100, Surgical instrument; 10, Tube assembly; 101, Lumen; 11, Bourdon tube; 12, Heat shrink tubing; 20, Operating mechanism; 21, Operating base; 211, First seat; 212, Second seat; 22, Operating support; 221, Second slide; 23, Operating arm; 231, Third slide; 24, Connecting arm; 30, Rotary transmission mechanism; 31, Rotating base; 311, First slide; 32, Rotating component; 321, First sliding part; 322, Limiting hole; 3221, Circular hole section; 3222, Limiting section; 33, First steel wire; 34, Second steel wire; 40, Hand Handle assembly; 41, First handle body; 411, First moving channel; 412, Mounting port; 42, First push-pull member; 421, Mating part; 4211, Second engaging tooth; 43, Locking structure; 431, Locking part; 4311, First engaging tooth; 432, Pressing part; 433, Connecting part; 44, Second handle body; 441, Second moving channel; 442, Fourth sliding groove; 45, Second push-pull member; 451, Connecting hole; 46, Finger ring; 47, Steel pipe; 48, Wiring structure; 481, Terminal post; 482, Wiring housing; 4821, Wiring groove; 4822, Wiring channel; 4823, Through hole. Detailed Implementation

[0034] To make the above-mentioned objectives, features, and advantages of this application more apparent and understandable, the specific embodiments of this application are described in detail below with reference to the accompanying drawings. Many specific details are set forth in the following description to provide a thorough understanding of this application. However, this application can be implemented in many other ways different from those described herein, and those skilled in the art can make similar modifications without departing from the spirit of this application. Therefore, this application is not limited to the specific embodiments disclosed below.

[0035] It should be noted that when a component is referred to as being "fixed to," "set on," or "properly placed on" another component, it can be directly on the other component or there may be an intermediate component. When a component is considered to be "connected to" another component, it can be directly connected to the other component or there may be an intermediate component present. The terms "vertical," "horizontal," "upper," "lower," "left," "right," and similar expressions used in this application's specification are for illustrative purposes only and do not represent the only possible implementation.

[0036] Furthermore, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include at least one of that feature. In the description of this application, "multiple" means at least two, such as two, three, etc., unless otherwise explicitly specified.

[0037] In this application, unless otherwise expressly specified and limited, "above" or "below" the second feature can mean that the first feature is in direct contact with the second feature, or that the first feature and the second feature are in indirect contact through an intermediate medium. Furthermore, "above," "over," and "on top" the second feature can mean that the first feature is directly above or diagonally above the second feature, or simply indicates that the first feature is at a higher horizontal level than the second feature. "Below," "below," and "under" the second feature can mean that the first feature is directly below or diagonally below the second feature, or simply indicates that the first feature is at a lower horizontal level than the second feature.

[0038] Unless otherwise defined, all technical and scientific terms used in this application have the same meaning as commonly understood by one of ordinary skill in the art to which this application belongs. The terminology used in this application is for the purpose of describing particular embodiments only and is not intended to be limiting of the application. The term "and / or" as used in this application includes any and all combinations of one or more of the associated listed items.

[0039] Please see Figures 1 to 12This application provides a surgical instrument 100, which includes a tube assembly 10, an operating mechanism 20, and a rotary transmission mechanism 30. The tube assembly 10 has a lumen 101. The operating mechanism 20 is connected to the distal end of the tube assembly 10. The rotary transmission mechanism 30 is installed on the tube assembly 10. The tube assembly 10 carries the operating mechanism 20 into the human body. The rotary transmission mechanism 30 drives the operating mechanism 20 to rotate in order to perform surgical operations on the tissue.

[0040] In practical applications, the endoscope has a working channel for installing the surgical instrument 100. The surgical instrument 100 and the endoscope body are spaced apart. The operating mechanism 20 and the tube assembly 10 pass through the working channel, and the endoscope can carry the surgical instrument 100 into the human body.

[0041] like Figures 2 to 4 As shown, in a specific embodiment, the rotary transmission mechanism 30 includes a rotating base 31, a rotating component 32, a first steel wire 33, and a second steel wire 34. The rotating base 31 is fixedly connected to the pipe assembly 10. One of the rotating base 31 and the rotating component 32 is provided with a first groove 311 extending spirally along the axial direction of the pipe cavity 101, and the other is provided with a first sliding portion 321 slidably connected to the groove wall of the first groove 311. The proximal end of the rotating component 32 is connected to the first steel wire 33. The first steel wire 33 is used to push and pull the rotating component 32 along the axial direction of the pipe cavity 101, so as to drive the rotating component 32 to move along the extension direction of the first groove 311, and to enable the rotating component 32 to rotate while moving along the axial direction of the pipe assembly 10. The second steel wire 34 is at least provided between the rotating component 32 and the operating mechanism 20, so as to transmit the rotation of the rotating component 32 to the operating mechanism 20 when the first steel wire 33 moves, thereby driving the operating mechanism 20 to rotate. In this process, the operator only needs to push and pull the first steel wire 33 to realize the rotation of the operating mechanism 20. The operation is simple and labor-saving. There is no need to twist the entire tube assembly 10, so there is less friction between the tube assembly 10 and the working channel of the endoscope. The torque transmission efficiency is high. The tube assembly 10 does not need to be made of a harder material to drive the rotation of the operating mechanism 20. The tube assembly 10 can be made of a more flexible material to reduce the friction between it and the working channel of the endoscope, making the movement of the tube assembly 10 easier and the use of the entire surgical instrument 100 more convenient.

[0042] In summary, by setting up a rotary transmission mechanism 30, the first steel wire 33 can be pushed and pulled to drive the rotating part 32 to move in the first sliding groove 311 that extends spirally along the axis of the tube 101. The rotating part 32 drives the operating mechanism 20 to rotate through the second steel wire 34, converting the movement of the first steel wire 33 into the rotation of the operating mechanism 20. This results in higher torque transmission efficiency and simpler operation.

[0043] It should be noted that in this application, the end closer to the operator is usually defined as the proximal end, and the end farther away from the operator is defined as the distal end.

[0044] In a specific embodiment, the rotary transmission mechanism 30 includes a pin, which passes through the first sliding groove 311 and is inserted and connected to the rotating member 32, that is, the first sliding part 321 is formed by the pin, which is easy to assemble and process.

[0045] like Figure 2 and Figure 3 As shown, in an optional embodiment, the rotary transmission mechanism 30 includes at least two second steel wires 34, which are spaced apart. By having the operating mechanism 20 rotate together through the at least two second steel wires 34, load sharing is achieved, stress is dispersed, torque loss is reduced, and torque transmission efficiency is improved. Simultaneously, this also helps ensure smoother rotation of the operating mechanism 20. Furthermore, by having at least two second steel wires 34, even if some of the second steel wires 34 fail, the remaining second steel wires 34 still maintain their connection and other functions.

[0046] like Figure 2 and Figure 3 As shown, in a specific embodiment, a first steel wire 33 is positioned between the projections of the two second steel wires 34 along the axial direction of the lumen 101. This arrangement ensures that when the first steel wire 33 pushes or pulls the rotating member 32, the point of force application is located between the two second steel wires 34, preventing the rotating member 32 from being subjected to skewed force. Simultaneously, the second steel wires 34 on both sides of the first steel wire 33 along the radial direction of the lumen 101 jointly drive the operating mechanism 20 to rotate, making the rotation more stable. Furthermore, since the tube assembly 10 may bend when entering the human body cavity, the above arrangement also increases the spacing between the two second steel wires 34, reducing the risk of entanglement and wear.

[0047] In an optional embodiment, the rotating member 32 is provided with a limiting hole 322, and the second steel wire 34 passes through the limiting hole 322 and is provided with a limiting surface. The limiting surface abuts against the wall of the limiting hole 322 along the circumference of the cavity 101 to restrict the second steel wire 34 from rotating in the limiting hole 322, thereby ensuring that the second steel wire 34 can drive the operating mechanism 20 to rotate.

[0048] like Figure 4As shown, in a specific embodiment, along the radial direction of the cavity 101, the limiting hole 322 includes a circular hole section 3221 and a limiting section 3222 communicating with the circular hole section 3221. The limiting section 3222 extends radially along the cavity 101. The second steel wire 34 includes a steel wire body and a limiting part connected to the steel wire body. The steel wire body passes through the circular hole section 3221, and the limiting part passes through the limiting section 3222. The limiting part has a limiting surface that abuts against the hole wall of the limiting hole 322. Since steel wires in the prior art are usually cylindrical, the above-mentioned setting of the second steel wire 34 only requires adding the limiting section 3222 to the existing cylindrical section, making processing easier. By cooperating with the circular hole section 3221, the limiting part and the limiting section 3222 cooperate to limit the circumferential rotation of the second steel wire 34.

[0049] In a specific embodiment, at least two limiting segments 3222 are provided, and the at least two limiting segments 3222 are arranged circumferentially along the circular hole segment 3221, with each limiting segment 3222 communicating with the circular hole segment 3221. Based on this arrangement, the second steel wire 34 is also provided with a corresponding mating segment to cooperate with the limiting segments 3222, so as to increase the limiting area of ​​the second steel wire 34 and the limiting hole 322.

[0050] like Figure 5 As shown, in a specific embodiment, the first groove 311 extends spirally along the axis of the lumen 101 at an angle α, where 30°≤α≤720°. This can meet the rotation angle requirements typically needed during surgery. During production, this can be achieved simply by changing the pitch and extension length of the first groove 311, making the operation easy. For example, α = 30°, 360°, or 720°.

[0051] like Figures 6 to 8 As shown, in an optional embodiment, the surgical instrument 100 further includes a handle assembly 40. The handle assembly 40 includes a first handle body 41 and a first push-pull member 42. The first handle body 41 has a first moving channel 411 communicating with the lumen 101. A first steel wire 33 passes through the first moving channel 411 and is connected to the first push-pull member 42. The first push-pull member 42 passes through the first moving channel 411 and is slidably connected to the first handle body 41. Thus, by moving the first push-pull member 42, the first steel wire 33 can be moved, making the operation simple and operable with one hand. The first moving channel 411 also serves to guide the movement of the first steel wire 33 and the first push-pull member 42, facilitating the smooth movement of the first steel wire 33.

[0052] like Figures 6 to 8As shown, in a specific embodiment, the proximal end of the first push-pull member 42 extends from the first moving channel 411 to facilitate operation by the operator. The distal end of the first push-pull member 42 is provided with a mating portion 421; the handle assembly 40 includes a locking structure 43 installed at the proximal end of the first handle body 41. The distal end of the locking structure 43 forms a movable locking portion 431 to engage with the mating portion 421, and the proximal end of the locking structure 43 forms a movable pressing portion 432. The locking structure 43 switches the locking state of the locking portion 431 and the mating portion 421 by moving the pressing portion 432. Thus, by adding the locking structure 43, the first push-pull member 42 can be locked after movement, eliminating the need for the operator to manually maintain the movable state of the first push-pull member 42, making operation simpler and less strenuous. Specifically, pressing down the pressing portion 432 unlocks the locking portion 431 relative to the mating portion 421, facilitating the movement of the first push-pull member 42. The locking part 431 and the mating part 421 can be locked by releasing the pressing part 432, which is easy to operate.

[0053] like Figure 6 and Figure 8 As shown, in a specific embodiment, the first handle 41 is provided with a mounting port 412 communicating with the first moving channel 411. A locking structure 43 is provided at the mounting port 412, and a connecting portion 433 is provided between the proximal and distal ends of the locking structure 43. The connecting portion 433 is connected to the first handle 41. The connecting portion 433 serves both as a connection and a force transmission function, and also supports the movement of the pressing portion 432 and the locking portion 431. When the pressing portion 432 at the proximal end of the locking structure 43 is pressed, under the force transmission of the connecting portion 433, the locking portion 431 at the distal end of the locking structure 43 can be lifted upwards, thereby moving the locking portion 431 away from the mating portion 421. When the pressing portion 432 at the proximal end of the locking structure 43 is released, the locking portion 431 can reset and lock with the mating portion 421.

[0054] like Figure 8 As shown, in a specific embodiment, the locking part 431 is provided with a first engaging tooth 4311, and the mating part 421 is provided with a second engaging tooth 4211. The first engaging tooth 4311 and the second engaging tooth 4211 can mesh with each other and form a limit along the axial direction of the first moving channel 411, thereby restricting the movement of the first push-pull member 42 relative to the first handle along the axial direction of the first moving channel 411 and realizing the locking of the first push-pull member 42.

[0055] like Figure 9 As shown, in a specific embodiment, the surgical instrument 100 includes two tube assemblies 10. Along the axial direction of the lumen 101, a rotary transmission mechanism 30 is connected between the two tube assemblies 10. This arrangement facilitates sequential connection and simplifies operation, without requiring the rotary transmission mechanism 30 to be installed inside the lumen 101.

[0056] In a specific embodiment, the tube assembly 10 includes a spring tube 11. The proximal end of the spring tube 11 between the operating mechanism 20 and the rotating base 31 is connected to the rotating base 31, and the distal end is connected to the operating mechanism 20; the proximal end of the spring tube 11 between the rotating base 31 and the handle assembly 40 is connected to the handle assembly 40, and the distal end is connected to the rotating base 31. Thus, the spring tube 11 is elastic and capable of elastic deformation, allowing it to adapt to different curved shapes of biological cavities. When the operating mechanism 20 rotates, the spring tube 11 also adapts to the rotation of the operating mechanism 20 and undergoes corresponding elastic deformation.

[0057] like Figure 9 As shown, in a specific embodiment, the tube assembly 10 further includes a heat shrink tube 12, which is sleeved on the outside of the spring tube 11. The proximal end of the heat shrink tube 12, located between the rotary transmission mechanism 30 and the handle assembly 40, is fixedly connected to the handle assembly 40. Thus, the heat shrink tube 12 has a smooth outer wall, which helps reduce friction with the working channel of the endoscope. Furthermore, due to the rotary transmission mechanism 30, the heat shrink tube 12 can be made of a flexible material, allowing it to deform accordingly during operation, making operation more effortless.

[0058] like Figure 10 and Figure 11 As shown, in an optional embodiment, the operating mechanism 20 includes an operating base 21 mounted on the pipe assembly 10, an operating support 22 mounted on the operating base 21, an operating arm 23, and a connecting arm 24. The operating support 22 passes through the operating base 21 and extends from the distal end of the operating base 21. The operating arm 23 is located at the distal end of the operating base 21 and rotatably connected to the operating support 22. The operating arm 23 and the operating support 22 are angled together. The operating arm 23 and the operating support 22 are slidably connected to the connecting arm 24, and the proximal end of the connecting arm 24 is connected to the distal end of the second steel wire 34. It is understood that the operating base 21 is configured to accommodate the operating support 22 and the connecting arm 24, and to provide support for the operating support 22. The operating support 22 can support the rotation of the operating arm 23 and the sliding of the connecting arm 24. The second steel wire 34 can move axially along the lumen 101 to drive the connecting arm 24 to slide relative to the operating support 22 and the operating arm 23, thereby driving the operating arm 23 to rotate relative to itself, so that the operating arm 23 can contact the tissue through rotation. In addition, the second steel wire 34 can also transmit torque to the connecting arm 24, and then from the connecting arm 24 to the operating support 22, and from the operating support 22 to the operating base 21. The rotation of the operating base 21 thus realizes the rotation of the entire operating mechanism 20.

[0059] like Figure 11As shown, in a specific embodiment, the operating base 21 includes a first base 211 and a second base 212. The first base 211 is connected to the second base 212. The end of the first base 211 opposite to the second base 212 along the axis of the lumen 101 is connected to the far end of the pipe assembly 10. The end of the second base 212 opposite to the first base 211 along the axis of the lumen 101 is connected to the operating support 22. The separate configuration makes it easier to process and assemble.

[0060] like Figure 10 and Figure 11 As shown, in a specific embodiment, the operating mechanism 20 has at least two spaced operating arms 23. The at least two operating arms 23 can rotate simultaneously relative to the operating support 22, and each operating arm 23 is connected to a connecting arm 24. By rotating at least two operating arms 23 synchronously, the angle between each operating arm 23 and the operating support 22 gradually decreases or gradually increases, thereby realizing the action of clamping and releasing tissue.

[0061] like Figure 10 and Figure 11 As shown, in a specific embodiment, the operating mechanism 20 is provided with two operating arms 23. Along the radial direction of the cavity 101, an operating arm 23 is provided on each side of the operating support 22. The two operating arms 23 are symmetrically arranged relative to the central axis of the operating support 22 to form the same clamping force. For example, the two connecting arms 24 corresponding to the two operating arms 23 can be connected by pins.

[0062] like Figure 10 and Figure 11 As shown, in a specific embodiment, the operating support 22 is provided with a second slide groove 221 extending axially along the cavity 101, and the operating arm 23 is provided with a third slide groove 231. The extension direction of the third slide groove 231 is set at an angle to the extension direction of the second slide groove 221, and the connecting arm 24 is simultaneously slidably connected to the groove wall of the second slide groove 221 and the groove wall of the third slide groove 231.

[0063] like Figure 6 and Figure 7As shown, in a specific embodiment, the handle assembly 40 further includes a second handle body 44 and a second push-pull member 45. The second handle body 44 is connected to the first handle body 41. The second handle body 44 has a second moving channel 441 communicating with the first moving channel 411. The axis of the first moving channel 411 and the axis of the second moving channel 441 are set at an angle. The second push-pull member 45 is slidably connected to the second handle body 44. The second steel wire 34 passes through the rotating member 32, and the proximal end of the second steel wire 34 passes through the second moving channel 441 and is connected to the second push-pull member 45. Thus, by moving the second push-pull member 45, the second steel wire 34 is moved, which in turn drives the connecting arm 24 to slide synchronously relative to the operating support member 22 and the operating arm 23, thereby realizing the rotation of the operating arm 23 relative to the operating support member 22. The operator only needs to move the second push-pull member 45 to realize the putting and clamping actions of the operating mechanism 20, which is simple to operate. The second moving channel 441 also has a guiding function for the movement of the second steel wire 34.

[0064] like Figure 6 As shown, in a specific embodiment, the second handle 44 is further provided with a fourth slide groove 442 connected to the near end of the second moving channel 441, the second push-pull member 45 is sleeved on the second handle 44 and slidably connected to the fourth slide groove 442, and the second steel wire 34 passes through the second moving channel 441 and the fourth slide groove 442 and is connected to the second push-pull member 45.

[0065] like Figure 6 and Figure 7 As shown, in a specific embodiment, the handle assembly 40 also includes a finger ring 46, which is connected to the proximal end of the second handle body 44, making it easier for the fingers to pass through the finger ring 46 for operation, and making the operator's hand more stable.

[0066] like Figure 7 As shown, in a specific embodiment, the second push-pull member 45 is provided with a connecting hole 451 extending along the axial direction of the second moving channel 441. The connecting hole 451 is connected to the fourth slide groove 442. The second steel wire 34 passes through the fourth slide groove 442 and the connecting hole 451 to facilitate connection with the second push-pull member 45.

[0067] like Figure 7 As shown, in a specific embodiment, a steel pipe 47 is sleeved on the near end of the second steel wire 34. The steel pipe 47 is connected to the second push-pull member 45. The setting of the steel pipe 47 helps to increase the structural strength of the connection between the second steel wire 34 and the second push-pull member 45. Moreover, the outer wall of the steel pipe 47 is smooth, and the second steel wire 34 contacts the inner wall of the second moving channel 441 through the steel pipe 47, which helps to reduce friction.

[0068] In other embodiments, the operating mechanism 20 can also be configured as an electrosurgical cutter, needle holder, etc., and the handle assembly 40 can be adapted to different operating mechanisms 20. It is understood that the tube assembly 10 and the rotary transmission mechanism 30 can be adapted to different operating mechanisms 20 and handle assemblies 40. When it is necessary to switch surgical tools, only the operating mechanism 20 and the corresponding handle assembly 40 need to be replaced, which helps to reduce the cost of use.

[0069] like Figure 12 As shown, exemplarily, when the operating mechanism 20 is configured as an electric cutter, the handle assembly 40 further includes a wiring structure 48, which includes a terminal block 481 and a wiring housing 482. The wiring housing 482 is connected to the second push-pull member 45 and has a wiring groove 4821, a wiring channel 4822, and a through hole 4823. One end of the wiring channel 4822 along its own axis is connected to the wiring groove 4821, and the other end is connected to the through hole 4823. The axis of the wiring channel 4822 is set at an angle to the axis of the through hole 4823. The through hole 4823 connects the connecting hole 451 and the fourth slide groove 442. The second steel wire 34 is sequentially passed through the fourth slide groove 442, the through hole 4823, and the connecting hole 451 and connected to the second push-pull member 45. Terminal 481 is installed in wiring groove 4821 and inserted into wiring channel 4822. Terminal 481 is connected to an external power source. Terminal 481 is electrically connected to the second steel wire 34 through wiring channel 4822 to provide power to the electric cutter.

[0070] The technical features of the above embodiments can be combined in any way. For the sake of brevity, not all possible combinations of the technical features in the above embodiments are described. However, as long as there is no contradiction in the combination of these technical features, they should be considered to be within the scope of this specification.

[0071] The embodiments described above are merely illustrative of several implementation methods of this application, and while the descriptions are relatively specific and detailed, they should not be construed as limiting the scope of the patent application. It should be noted that those skilled in the art can make various modifications and improvements without departing from the concept of this application, and these all fall within the scope of protection of this application. Therefore, the patent protection scope of this application should be determined by the appended claims.

Claims

1. A surgical operating instrument, characterized in that include: Pipe assembly, with a lumen; An operating mechanism is connected to the distal end of the tube assembly; A rotary transmission mechanism is installed on the pipe assembly. The rotary transmission mechanism includes a rotating base, a rotating component, a first steel wire, and a second steel wire. The rotating base is fixedly connected to the pipe assembly. One of the rotating base and the rotating component is provided with a first groove extending spirally along the axis of the pipe cavity, and the other is provided with a first sliding portion slidably connected to the wall of the first groove. The proximal end of the rotating component is connected to the first steel wire, which is used to push and pull the rotating component along the axis of the pipe cavity. The second steel wire is at least located between the rotating component and the operating mechanism to drive the operating mechanism to rotate when the first steel wire moves.

2. The surgical operating instrument according to claim 1, characterized in that The rotary transmission mechanism includes at least two second steel wires, which are spaced apart.

3. A surgical operating instrument according to claim 2, characterised in that Along the radial direction of the lumen, the projection of the first wire along the axial direction of the lumen is provided between the projections of the two second wires along the axial direction of the lumen.

4. The surgical operating instrument according to claim 1, characterized in that The rotating component is provided with a limiting hole, and the second steel wire passes through the limiting hole and is provided with a limiting surface. The limiting surface abuts against the hole wall of the limiting hole along the circumference of the cavity to restrict the rotation of the second steel wire in the limiting hole.

5. A surgical operating instrument according to claim 4, characterised in that Along the radial direction of the cavity, the limiting hole includes a circular hole segment and a limiting segment communicating with the circular hole segment, the limiting segment extending radially along the cavity; The second steel wire includes a steel wire body and a limiting part connected to the steel wire body. The steel wire body passes through the circular hole section, and the limiting part passes through the limiting section. The limiting part has a limiting surface that abuts against the hole wall of the limiting hole.

6. The surgical operating instrument according to claim 1, characterized in that The first groove extends spirally along the axis of the cavity at an angle α, where 30°≤α≤720°.

7. The surgical operating instrument according to claim 1, characterized in that The surgical instrument further includes a handle assembly, which includes a first handle body and a first push-pull member. The first handle body has a first moving channel communicating with the lumen. The first steel wire passes through the first moving channel and is connected to the first push-pull member. The first push-pull member passes through the first moving channel and is slidably connected to the first handle body.

8. A surgical operating instrument according to claim 7, characterised in that The proximal end of the first push-pull member extends from the first moving channel, and the distal end of the first push-pull member is provided with a mating part; The handle assembly includes a locking structure installed at the proximal end of the first handle body. The distal end of the locking structure forms a movable locking part, and the proximal end forms a movable pressing part. The locking structure switches the locking state of the locking part and the mating part by moving the pressing part.

9. A surgical operating instrument according to claim 8, characterised in that, The locking part is provided with a first meshing tooth, and the mating part is provided with a second meshing tooth. The first meshing tooth and the second meshing tooth can mesh with each other and form a limiting lock along the axial direction of the first moving channel.

10. The surgical operating instrument according to claim 7, characterized in that The operating mechanism includes an operating base mounted on the pipe assembly, an operating support mounted on the operating base, an operating arm, and a connecting arm. The operating support is inserted through the operating base and extends from the far end of the operating base. The operating arm is located at the far end of the operating base and is rotatably connected to the operating support. The operating arm is set at an angle to the operating support. The operating arm and the operating support are slidably connected to the connecting arm. The proximal end of the connecting arm is connected to the far end of the second steel wire. The handle assembly further includes a second handle body and a second push-pull member. The second handle body is connected to the first handle body. The second handle body is provided with a second moving channel communicating with the first moving channel. The axis of the first moving channel and the axis of the second moving channel are set at an angle. The second push-pull member is slidably connected to the second handle body. The second steel wire passes through the rotating member, and the proximal end of the second steel wire passes through the second moving channel and is connected to the second push-pull member.

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