Surgical operation instrument

Abstract

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

Description

Technical Field

[0001] The present application relates to the technical field of medical devices, and in particular to a surgical instrument. Background Art

[0002] The endoscope is provided with a working channel for installing different surgical instruments. The endoscope can carry the surgical instruments into the human body to perform operations such as cutting and hemostasis on tissues. The surgical instrument usually includes an execution end, a tube body and a handle, and the tube body is connected between the handle and the execution end. During the operation, the execution end of the operating instrument usually needs to be rotated according to the tissue conditions. When adjusting the rotation angle, the handle and tube body of the surgical operating machine need to be rotated as a whole, thereby driving the execution end to rotate. However, this method has a high torque loss rate, and the friction between the tube body and the working channel of the endoscope is large. The hardness of the tube body is required to be high, and the surgical instrument is difficult to control. Summary of the Invention

[0003] Based on this, it is necessary to provide a surgical operating instrument to improve the transmission efficiency of torque, make the rotation of the execution end easier, and make the use of the surgical operating instrument more convenient.

[0004] The surgical operating instrument includes a tube assembly, an operating mechanism and a rotating 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 rotating transmission mechanism is installed on the tube assembly; the rotating transmission mechanism includes a rotating base, a rotating member, a first steel wire and a second steel wire, and the rotating base is fixedly connected to the tube assembly; one of the rotating base and the rotating member is provided with a first slide groove extending spirally along the axis of the tube cavity, and the other is provided with a first sliding portion slidably connected to the wall of the first slide groove; the proximal end of the rotating member is connected to the first steel wire, the first steel wire is used to push and pull the rotating member along the axis of the tube cavity, and the second steel wire is at least provided between the rotating member and the operating mechanism to drive the operating mechanism to rotate when the first steel wire moves.

[0005] It is understandable that by pushing and pulling the first steel wire, the first steel wire transmits force to the rotating member, and the rotating member moves along the extension direction of the first chute through the sliding connection between the first sliding portion and the first chute. Since the first chute extends in a spiral shape along the axis of the tubular cavity, the movement of the first steel wire can be converted into the rotation of the rotating member. The rotating member is connected to the operating mechanism through the second steel wire, and then drives the operating mechanism to rotate. During the entire process, it is only necessary to push and pull the first steel wire, and the movement of the first steel wire is converted into the rotation of the rotating member through the setting of the first chute. There is no need to screw the entire tube assembly, the torque transmission efficiency is higher, the operation is more labor-saving, and the use of surgical operating instruments is more convenient.

[0006] In one embodiment, the rotation transmission mechanism includes at least two second steel wires, and the at least two second steel wires are arranged at intervals.

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

[0008] In one embodiment, the rotating member is provided with a limiting hole, the second steel wire is passed 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 lumen to limit the rotation of the second steel wire in the limiting hole.

[0009] In one embodiment, along the radial direction of the lumen, the limiting hole includes a circular hole segment and a limiting segment connected to the circular hole segment, and the limiting segment extends along the radial direction of the lumen;

[0010] The second steel wire includes a steel wire body and a limiting portion connected to the steel wire body, the steel wire body is passed through the circular hole section, the limiting portion is passed through the limiting section, and the limiting portion is provided with the limiting surface abutting against the hole wall of the limiting hole.

[0011] In one embodiment, the angle of the spiral extension of the first sliding groove along the axis of the lumen is α, 30°≤α≤720°.

[0012] In one embodiment, the surgical operating instrument also includes a handle assembly, which includes a first handle body and a first push-pull member. The first handle body is provided with a first movable channel connected to the tubular cavity. The first steel wire is passed through the first movable channel and is connected to the first push-pull member. The first push-pull member is passed through the first movable 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 matching portion;

[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 matching part through the movement of the pressing part.

[0015] In one embodiment, the locking portion is provided with a first meshing tooth, and the matching portion is provided with a second meshing tooth. The first meshing tooth and the second meshing tooth can mesh with each other and form a limited 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 body, and a connecting arm body;

[0017] The operating support member is provided through the operating base and extends from the distal end of the operating base. The operating arm body is provided at the distal end of the operating base and is rotatably connected to the operating support member. The operating arm body and the operating support member are arranged at an angle. The operating arm body and the operating support member are respectively slidably connected to the connecting arm body. The proximal end of the connecting arm body is connected to the distal 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 being connected to the first handle body, the second handle body being provided with a second movable channel connected to the first movable channel, the axis of the first movable channel and the axis of the second movable channel being arranged at an angle, and the second push-pull member being slidably connected to the second handle body;

[0019] The second steel wire is passed through the rotating member, and the proximal end of the second steel wire is passed through the second moving channel and connected to the second push-pull member. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] In order to more clearly illustrate the embodiments of the present application or the technical solutions in the conventional technology, the following briefly introduces the drawings required for use in the embodiments or the conventional technology descriptions. Obviously, the drawings described below are only some embodiments of the present application. For ordinary technicians in this field, other drawings can be obtained based on these drawings without creative work.

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

[0022] Figure 2 for Figure 1 A partial enlarged view of 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 structure of a rotating part in the surgical operating instrument provided in this application;

[0025] Figure 5 Schematic diagrams of the structures of rotating parts in three different embodiments of the surgical operating instrument provided in this application;

[0026] Figure 6 This is a schematic structural diagram of a handle assembly in one embodiment of the surgical operating instrument provided by the present application;

[0027] Figure 7 A cross-sectional view of a handle assembly of an embodiment of a surgical operating instrument provided by the present application;

[0028] Figure 8 A partial cross-sectional enlarged view of a handle assembly of an embodiment of the surgical operating instrument provided by the present application;

[0029] Figure 9 This is an enlarged partial cross-sectional view of the rotary transmission mechanism in the surgical operating instrument provided in this application;

[0030] Figure 10 This is a schematic structural diagram of an operating mechanism of an embodiment of the surgical operating instrument provided in this application;

[0031] Figure 11 An exploded view of an operating mechanism of an embodiment of a surgical operating instrument provided by the present application;

[0032] Figure 12 A partial cross-sectional view of a handle assembly according to another embodiment of the surgical instrument provided by the present application.

[0033] Figure numerals: 100, surgical operating instrument; 10, tube assembly; 101, tube cavity; 11, spring tube; 12, heat shrink tube; 20, operating mechanism; 21, operating base; 211, first base; 212, second base; 22, operating support member; 221, second slide; 23, operating arm; 231, third slide; 24, connecting arm; 30, rotating transmission mechanism; 31, rotating base; 311, first slide; 32, rotating member; 321, first sliding portion; 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 movable channel; 412. mounting port; 42. first push-pull member; 421. mating portion; 4211. second meshing tooth; 43. locking structure; 431. locking portion; 4311. first meshing tooth; 432. pressing portion; 433. connecting portion; 44. second handle body; 441. second movable channel; 442. fourth slide groove; 45. second push-pull member; 451. connecting hole; 46. finger ring; 47. steel pipe; 48. wiring structure; 481. terminal; 482. wiring housing; 4821. wiring slot; 4822. wiring channel; 4823. through hole. DETAILED DESCRIPTION

[0034] To make the above-mentioned objects, features, and advantages of the present application more clearly understood, the specific embodiments of the present application are described in detail below with reference to the accompanying drawings. The following description sets forth many specific details to facilitate a full understanding of the present application. However, the present application can be implemented in many other ways than those described herein, and those skilled in the art can make similar improvements without violating the scope of the present application. Therefore, the present 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 on" or "provided on" or "set on" another component, it may be directly on the other component or there may be a central component. When a component is considered to be "connected to" another component, it may be directly connected to the other component or there may be a central component at the same time. The terms "vertical", "horizontal", "upper", "lower", "left", "right" and similar expressions used in the specification of this application are for illustrative purposes only and do not represent the only implementation method.

[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 the technical features being referred to. Thus, a feature defined as "first" or "second" may explicitly or implicitly include at least one of such features. Throughout the description of this application, "plurality" means at least two, for example, two, three, etc., unless otherwise specifically defined.

[0037] In this application, unless otherwise expressly specified or limited, when a first feature is "above" or "below" a second feature, it can mean that the first feature is directly in contact with the second feature, or the first feature and the second feature are indirectly in contact through an intermediary. Furthermore, when a first feature is "above," "above," or "above" a second feature, it can mean that the first feature is directly above or diagonally above the second feature, or simply means that the first feature is higher in level than the second feature. When a first feature is "below," "below," or "below" a second feature, it can mean that the first feature is directly below or diagonally below the second feature, or simply means that the first feature is lower in level than the second feature.

[0038] Unless otherwise defined, all technical and scientific terms used in the specification of this application have the same meaning as commonly understood by those skilled in the art to which this application belongs. The terms used in the specification of this application are only for the purpose of describing specific embodiments and are not intended to limit this application. The term "and / or" used in the specification of this application includes any and all combinations of one or more of the relevant listed items.

[0039] See also Figures 1 to 12The present application provides a surgical operating instrument 100, which includes a tube assembly 10, an operating mechanism 20 and a rotary transmission mechanism 30. The tube assembly 10 is provided with a lumen 101, the operating mechanism 20 is connected to the distal end of the tube assembly 10, and 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, and the operating mechanism 20 is driven to rotate by the rotary transmission mechanism 30 to perform surgical operations on tissues.

[0040] In actual application, the endoscope is provided with a working channel for installing the surgical operating instrument 100. The surgical operating instrument 100 is spaced apart from the endoscope body. The operating mechanism 20 and the tube assembly 10 are passed through the working channel. The endoscope can carry the surgical operating instrument 100 into the human body.

[0041] like Figures 2 to 4 As shown, in a specific embodiment, the rotation transmission mechanism 30 includes a rotating base 31, a rotating member 32, a first steel wire 33, and a second steel wire 34. The rotating base 31 is fixedly connected to the tube assembly 10. One of the rotating base 31 and the rotating member 32 is provided with a first sliding groove 311 extending spirally along the axis of the tubular lumen 101, and the other is provided with a first sliding portion 321 slidably connected to the wall of the first sliding groove 311. The proximal end of the rotating member 32 is connected to the first steel wire 33. The first steel wire 33 is used to push and pull the rotating member 32 along the axis of the tubular lumen 101, thereby driving the rotating member 32 to move along the extension direction of the first sliding groove 311, and allowing the rotating member 32 to rotate while moving axially along the tube assembly 10. The second steel wire 34 is provided at least between the rotating member 32 and the operating mechanism 20 to transmit the rotation of the rotating member 32 to the operating mechanism 20 when the first steel wire 33 moves, thereby driving the operating mechanism 20 to rotate. During 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 screw the entire tube assembly 10, so it is not easy to generate large 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 select a harder material to drive the rotation of the operating mechanism 20. The tube assembly 10 can select a more flexible material to reduce the friction between the tube assembly 10 and the working channel of the endoscope, making the movement of the tube assembly 10 easier and the use of the entire surgical operating instrument 100 more convenient.

[0042] In summary, by setting up a rotating transmission mechanism 30, by pushing and pulling the first steel wire 33, the rotating member 32 can be driven to move in the first slide groove 311 extending spirally along the axial direction of the tubular cavity 101. The rotating member 32 drives the operating mechanism 20 to rotate through the second steel wire 34, and the movement of the first steel wire 33 is converted into the rotation of the operating mechanism 20, which has higher torque transmission efficiency and easier operation.

[0043] It should be noted that, in this application, the end close to the operator is generally defined as the proximal end, and the end far from the operator is defined as the distal end.

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

[0045] like Figure 2 and Figure 3 As shown, in an optional embodiment, the rotation transmission mechanism 30 includes at least two second steel wires 34, which are spaced apart. The at least two second steel wires 34 jointly drive the operating mechanism 20 to rotate, thereby achieving load sharing, dispersing stress, reducing torque loss, and improving torque transmission efficiency. At the same time, it also helps to ensure smoother rotation of the operating mechanism 20. In addition, by providing 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 functions such as connection.

[0046] like Figure 2 and Figure 3 As shown, in a specific embodiment, along the radial direction of the tubular cavity 101, a projection of the first steel wire 33 along the axial direction of the tubular cavity 101 is provided between the projections of the two second steel wires 34 along the axial direction of the tubular cavity 101. With this arrangement, when the first steel wire 33 pushes and pulls the rotating member 32, the point of force application is located between the two second steel wires 34, thereby preventing the rotating member 32 from being deflected by the force. At the same time, the second steel wires 34 on both sides of the radial direction of the tubular cavity 101 of the first steel wire 33 jointly drive the operating mechanism 20 to rotate, making the rotation more stable. In addition, the tube assembly 10 will bend when entering the human body cavity, so the above arrangement also increases the distance 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, the second steel wire 34 is passed through the limiting hole 322 and is provided with a limiting surface, the limiting surface abuts against the hole wall of the limiting hole 322 along the circumference of the tubular cavity 101 to limit the rotation of the second steel wire 34 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 tubular cavity 101, the limiting hole 322 includes a circular hole section 3221 and a limiting section 3222 connected to the circular hole section 3221, and the limiting section 3222 extends radially along the tubular cavity 101; the second steel wire 34 includes a steel wire body and a limiting portion connected to the steel wire body, the steel wire body is passed through the circular hole section 3221, and the limiting portion is passed through the limiting section 3222, and the limiting portion is provided with a limiting surface that abuts the hole wall of the limiting hole 322. Since steel wires in the prior art are usually configured as cylindrical, the configuration of the second steel wire 34 only requires adding the limiting section 3222 on the basis of the existing cylindrical section, which is easier to process. The steel wire body cooperates with the circular hole section 3221, and the limiting portion cooperates with the limiting section 3222 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 at intervals along the circumference of the circular hole segment 3221, and each limiting segment 3222 is respectively connected to the circular hole segment 3221. Based on this arrangement, the second steel wire 34 is also provided with a corresponding matching segment to cooperate with the limiting segment 3222, thereby increasing 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 angle of the spiral extension of the first chute 311 along the axis of the lumen 101 is α, and 30°≤α≤720° can meet the rotation angle requirements commonly required during surgery. During production, this can be achieved by simply changing the pitch and extension length of the first chute 311, which is easy to operate. Exemplarily, α = 30°, 360°, or 720°.

[0051] like Figures 6 to 8 As shown, in an optional embodiment, the surgical operating instrument 100 further includes a handle assembly 40, which includes a first handle body 41 and a first push-pull member 42. The first handle body 41 is provided with a first movable channel 411 connected to the tubular cavity 101. The first steel wire 33 is provided through the first movable channel 411 and connected to the first push-pull member 42. The first push-pull member 42 is provided through the first movable channel 411 and is slidably connected to the first handle body 41. In this way, the first steel wire 33 can be moved by moving the first push-pull member 42, which is simple to operate and can be operated with one hand. The first movable channel 411 can also guide the movement of the first steel wire 33 and the first push-pull member 42, thereby 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 movable 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 mounted on the proximal end of the first handle body 41. The distal end of the locking structure 43 forms a movable locking portion 431 to facilitate mating with the mating portion 421. The proximal end of the locking structure 43 forms a movable pressing portion 432. The locking structure 43 switches the locking state between the locking portion 431 and the mating portion 421 through the movement of the pressing portion 432. In this way, by adding the locking structure 43, the first push-pull member 42 can be locked after being moved, eliminating the need for the operator to manually maintain the movable state of the first push-pull member 42, making operation simpler and more labor-saving. Specifically, by pressing the pressing portion 432 downward, the locking portion 431 can be unlocked relative to the mating portion 421, facilitating movement of the first push-pull member 42. The locking portion 431 and the matching portion 421 can be locked by releasing the pressing portion 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 an installation opening 412 connected to the first movement channel 411. The locking structure 43 is disposed at the installation opening 412. A connecting portion 433 is disposed 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 not only connects the first handle 41 but also transmits force and 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, the force transmitted by the connecting portion 433 causes the locking portion 431 at the distal end of the locking structure 43 to be lifted upward, 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 be reset to lock with the mating portion 421.

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

[0055] like Figure 9 As shown, in a specific embodiment, the surgical operating instrument 100 includes two tube assemblies 10, and a rotating transmission mechanism 30 is connected between the two tube assemblies 10 along the axial direction of the tubular cavity 101. This arrangement is conducive to successive connection and simple operation, without the need to install the rotating transmission mechanism 30 in the tubular cavity 101.

[0056] In a specific embodiment, the tube assembly 10 includes a spring tube 11. Between the operating mechanism 20 and the rotating base 31, the proximal end of the spring tube 11 is connected to the rotating base 31, and the distal end is connected to the operating mechanism 20. Between the rotating base 31 and the handle assembly 40, the proximal end of the spring tube 11 is connected to the handle assembly 40, and the distal end is connected to the rotating base 31. This configuration provides the spring tube 11 with elasticity and the ability to deform. This configuration allows the spring tube 11 to adapt to various curved biocavities. As the operating mechanism 20 rotates, the spring tube 11 also elastically deforms to accommodate the rotation of the operating mechanism 20.

[0057] like Figure 9 As shown, in a specific embodiment, the tube assembly 10 further includes a heat shrink tube 12, which is sleeved over 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. This provides the heat shrink tube 12 with a smooth outer wall, which helps reduce friction with the working channel of the endoscope. Furthermore, thanks to the configuration of 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 the operation more labor-saving.

[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 is disposed through the operating base 21 and extends from the distal end of the operating base 21, the operating arm 23 is disposed at the distal end of the operating base 21 and is rotatably connected to the operating support 22, the operating arm 23 and the operating support 22 are arranged at an angle, the operating arm 23 and the operating support 22 are respectively 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 can be understood that the operating base 21 is configured to accommodate the operating support 22 and the connecting arm 24 and to support 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 the operating arm 23, allowing the operating arm 23 to contact the tissue through rotation. In addition, the second steel wire 34 can also transmit torque to the connecting arm 24, which is then transmitted from the connecting arm 24 to the operating support 22, and the operating support 22 transmits the torque to the operating base 21. The rotation of the operating base 21 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 body 211 and a second base body 212, the first base body 211 is connected to the second base body 212, and one end of the first base body 211 away from the second base body 212 along the axis of the tubular cavity 101 is connected to the distal end of the tube assembly 10, and the end of the second base body 212 away from the first base body 211 along the axis of the tubular cavity 101 is connected to the operating support 22. The split setting is 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 operating arms 23 arranged at intervals, and at least two operating arms 23 can rotate relative to the operating support 22 at the same time, and each operating arm 23 is correspondingly connected to a connecting arm 24. By synchronously rotating at least two operating arms 23, the angle between each operating arm 23 and the operating support 22 gradually decreases or increases, thereby realizing the action of clamping and loosening tissue.

[0061] like Figure 10 and Figure 11 As shown, in a specific embodiment, the operating mechanism 20 includes two operating arms 23, one on each side of the operating support member 22 along the radial direction of the lumen 101. The two operating arms 23 are symmetrically arranged relative to the central axis of the operating support member 22 to generate the same clamping force. For example, the two connecting arms 24 corresponding to the two operating arms 23 can be connected by a pin.

[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 tubular cavity 101, and the operating arm body 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 body 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 and defines a second movable channel 441 that communicates with the first movable channel 411. The axis of the first movable channel 411 and the axis of the second movable channel 441 are arranged at an angle. The second push-pull member 45 is slidably connected to the second handle body 44. The second steel wire 34 is passed through the rotating member 32, and the proximal end of the second steel wire 34 passes through the second movable 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 driven to move. The second steel wire 34 then drives the connecting arm 24 to slide synchronously relative to the operating support member 22 and the operating arm 23, thereby achieving rotation of the operating arm 23 relative to the operating support member 22. The operator can achieve the release and clamping actions of the operating mechanism 20 by simply moving the second push-pull member 45, which is convenient. The second movable channel 441 also guides the movement of the second steel wire 34.

[0064] like Figure 6 As shown, in a specific embodiment, the second handle body 44 is also provided with a fourth slide groove 442 connected to the proximal end of the second movable channel 441, the second push-pull member 45 is sleeved on the second handle body 44 and slidably connected to the fourth slide groove 442, the second steel wire 34 is passed through the second movable 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 further includes a finger ring 46, which is connected to the proximal end of the second handle body 44, so that the operator can operate by passing the finger through the finger ring 46, making the hand-holding 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 movable channel 441, the connecting hole 451 is connected to the fourth slide groove 442, and the second steel wire 34 is passed 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, the second steel wire 34 is provided with a steel tube 47 at the proximal end, and the steel tube 47 is connected to the second push-pull member 45. The provision of the steel tube 47 is beneficial to increasing the structural strength of the connection between the second steel wire 34 and the second push-pull member 45, and the outer wall of the steel tube 47 is smooth. The second steel wire 34 contacts the inner wall of the second movable channel 441 through the steel tube 47, which is beneficial to reducing friction.

[0068] In other embodiments, the operating mechanism 20 can also be configured as an electric cutting knife, a needle holder, etc., and the handle assembly 40 can be adaptively adjusted to correspond to different operating mechanisms 20. It is understandable that the tube assembly 10 and the rotary transmission mechanism 30 can be adapted to different operating mechanisms 20 and handle assemblies 40. When switching surgical operating tools, only the operating mechanism 20 and the corresponding handle assembly 40 need to be replaced, which helps reduce usage costs.

[0069] like Figure 12 As shown, 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 481 and a wiring housing 482. The wiring housing 482 is connected to the second push-pull member 45 and is configured with a wiring slot 4821, a wiring channel 4822, and a through-hole 4823. One end of the wiring channel 4822 along its axis is connected to the wiring slot 4821, and the other end is connected to the through-hole 4823. The axis of the wiring channel 4822 is arranged at an angle to the axis of the through-hole 4823. The through-hole 4823 is connected between the connecting hole 451 and the fourth slide groove 442. The second steel wire 34 is sequentially inserted through the fourth slide groove 442, the through-hole 4823, and the connecting hole 451, and is connected to the second push-pull member 45. The terminal 481 is installed in the terminal slot 4821 and inserted into the wiring channel 4822. The terminal 481 is connected to the external power supply. The terminal 481 is electrically connected to the second steel wire 34 through the wiring channel 4822 to power the electric cutter.

[0070] The technical features of the above-mentioned embodiments can be combined arbitrarily. In order to make the description concise, not all possible combinations of the technical features in the above-mentioned 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 above-described embodiments merely represent several implementation methods of the present application. 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 a person of ordinary skill in the art may make various modifications and improvements without departing from the spirit of the present application, all of which fall within the scope of protection of the present application. Therefore, the scope of patent protection for the present application shall be determined by the appended claims.

Claims

1. A surgical instrument, characterized in that: include: a tube assembly having a lumen; an operating mechanism connected to the distal end of the tube assembly; A rotary transmission mechanism is installed on the tube assembly; the rotary transmission mechanism includes a rotary base, a rotary member, a first steel wire and a second steel wire, the rotary base is fixedly connected to the tube assembly; one of the rotary base and the rotary member is provided with a first slide groove extending spirally along the axis of the tubular cavity, and the other is provided with a first sliding portion slidably connected to the wall of the first slide groove; the proximal end of the rotary member is connected to the first steel wire, the first steel wire is used to push and pull the rotary member along the axis of the tubular cavity, and the second steel wire is at least provided between the rotary member 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 rotation transmission mechanism includes at least two second steel wires, and the at least two second steel wires are arranged at intervals.

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

4. The surgical operating instrument according to claim 1, characterized in that: The rotating member is provided with a limiting hole, the second steel wire is passed 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 lumen to limit the second steel wire from rotating in the limiting hole.

5. The surgical operating instrument according to claim 4, characterized in that: Along the radial direction of the lumen, the limiting hole includes a circular hole segment and a limiting segment connected to the circular hole segment, and the limiting segment extends along the radial direction of the lumen; The second steel wire includes a steel wire body and a limiting portion connected to the steel wire body, the steel wire body is passed through the circular hole section, the limiting portion is passed through the limiting section, and the limiting portion is provided with the limiting surface abutting against the hole wall of the limiting hole.

6. The surgical instrument according to claim 1, wherein: The angle of the first sliding groove spirally extending along the axis of the lumen is α, and 30°≤α≤720°.

7. The surgical operating instrument according to claim 1, characterized in that: The surgical operating instrument also includes a handle assembly, which includes a first handle body and a first push-pull member. The first handle body is provided with a first movable channel connected to the tubular cavity. The first steel wire is passed through the first movable channel and is connected to the first push-pull member. The first push-pull member is passed through the first movable channel and is slidably connected to the first handle body.

8. The surgical instrument according to claim 7, characterized 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 matching portion; 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 matching part through the movement of the pressing part.

9. The surgical operating instrument according to claim 8, characterized in that: The locking portion is provided with a first meshing tooth, and the matching portion is provided with a second meshing tooth. The first meshing tooth and the second meshing tooth can mesh with each other and form a limited locking 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 body and a connecting arm body; The operating support member is provided through the operating base and extends from the distal end of the operating base. The operating arm body is provided at the distal end of the operating base and is rotatably connected to the operating support member. The operating arm body and the operating support member are arranged at an angle. The operating arm body and the operating support member are respectively slidably connected to the connecting arm body. The proximal end of the connecting arm body is connected to the distal 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 being connected to the first handle body, the second handle body being provided with a second movable channel connected to the first movable channel, the axis of the first movable channel and the axis of the second movable channel being arranged at an angle, and the second push-pull member being slidably connected to the second handle body; The second steel wire is passed through the rotating member, and the proximal end of the second steel wire is passed through the second moving channel and connected to the second push-pull member.

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