WO2020244267A1 - Instrument chirurgical endoscopique - Google Patents

Instrument chirurgical endoscopique Download PDF

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Publication number
WO2020244267A1
WO2020244267A1 PCT/CN2020/078454 CN2020078454W WO2020244267A1 WO 2020244267 A1 WO2020244267 A1 WO 2020244267A1 CN 2020078454 W CN2020078454 W CN 2020078454W WO 2020244267 A1 WO2020244267 A1 WO 2020244267A1
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WO
WIPO (PCT)
Prior art keywords
tube
rotating mechanism
proximal
operating wire
distal
Prior art date
Application number
PCT/CN2020/078454
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English (en)
Chinese (zh)
Inventor
冷德嵘
金鸿雁
唐志
李常青
仇卫勤
奚杰峰
李宁
韦建宇
Original Assignee
南微医学科技股份有限公司
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Application filed by 南微医学科技股份有限公司 filed Critical 南微医学科技股份有限公司
Publication of WO2020244267A1 publication Critical patent/WO2020244267A1/fr

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    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61B—DIAGNOSIS; SURGERY; IDENTIFICATION
    • A61B17/00—Surgical instruments, devices or methods, e.g. tourniquets
    • A61B17/00234—Surgical instruments, devices or methods, e.g. tourniquets for minimally invasive surgery
    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61B—DIAGNOSIS; SURGERY; IDENTIFICATION
    • A61B17/00—Surgical instruments, devices or methods, e.g. tourniquets
    • A61B17/12—Surgical instruments, devices or methods, e.g. tourniquets for ligaturing or otherwise compressing tubular parts of the body, e.g. blood vessels, umbilical cord
    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61B—DIAGNOSIS; SURGERY; IDENTIFICATION
    • A61B17/00—Surgical instruments, devices or methods, e.g. tourniquets
    • A61B2017/00367—Details of actuation of instruments, e.g. relations between pushing buttons, or the like, and activation of the tool, working tip, or the like
    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61B—DIAGNOSIS; SURGERY; IDENTIFICATION
    • A61B17/00—Surgical instruments, devices or methods, e.g. tourniquets
    • A61B2017/0046—Surgical instruments, devices or methods, e.g. tourniquets with a releasable handle; with handle and operating part separable
    • A61B2017/00469—Surgical instruments, devices or methods, e.g. tourniquets with a releasable handle; with handle and operating part separable for insertion of instruments, e.g. guide wire, optical fibre
    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61B—DIAGNOSIS; SURGERY; IDENTIFICATION
    • A61B17/00—Surgical instruments, devices or methods, e.g. tourniquets
    • A61B17/12—Surgical instruments, devices or methods, e.g. tourniquets for ligaturing or otherwise compressing tubular parts of the body, e.g. blood vessels, umbilical cord
    • A61B2017/12004—Surgical instruments, devices or methods, e.g. tourniquets for ligaturing or otherwise compressing tubular parts of the body, e.g. blood vessels, umbilical cord for haemostasis, for prevention of bleeding

Definitions

  • This application relates to the technical field of medical devices, and in particular to an endoscopic surgical instrument.
  • Digestive tract instruments refer to instruments that can enter the patient's digestive tract to perform internal surgical operations, such as snares, hemostatic clamps, biopsy forceps, or foreign body forceps. In practical applications, digestive tract instruments require doctors to operate from outside the body and transmit operating actions through operating wires to control the instruments in the body to perform surgical actions.
  • the hemostatic clip as an example, the mechanical force generated when the hemostatic clip is closed can ligate the surrounding tissues and blood vessels together, thereby closing the bleeding blood vessels. Therefore, the ability of the hemostatic clip to ligate tissues directly affects the quality of the operation.
  • a typical hemostatic clip includes a handle, a catheter, an operating wire, and a clamping part.
  • the handle is connected to the clamping part by an operating wire set inside the catheter to control the movement of the clamping part through the handle.
  • the handle is also movably connected to the end of the catheter, that is, the handle can be rotated relative to the catheter to drive when the handle is turned.
  • the clamping part rotates.
  • the rotation function of the hemostatic clip is to perform a rotation operation by the assistant of the operator to drive the operation wire to rotate and realize the rotation of the clamping part. Therefore, in order to accurately clip blood vessels or wounds to achieve high-efficiency treatment efficiency, close cooperation between the operator and the assistant is required.
  • the current cooperation between the clinical surgeon and the assistant often cannot achieve the complete ideal effect, so it is urgently needed
  • a hemostatic clip whose rotation is controlled by the surgeon makes up for the shortcomings of the existing equipment.
  • the present application provides an endoscopic surgical instrument to solve the above-mentioned shortcomings in the implementation of rotating operation of traditional digestive tract instruments.
  • the present application provides an endoscopic surgical instrument, including: an operating wire, an outer tube, a rotating mechanism, and an action member, wherein the operating wire is connected to a handle to transmit surgical actions;
  • the outer tube includes a proximal tube and a distal tube End tube, the operating wire penetrates the inside of the proximal tube and the distal tube; a rotating mechanism for connecting the proximal tube and the distal tube, so that the proximal tube can be relative to the distal tube The tube rotates; the action piece is arranged at the distal end of the distal tube and is connected to the operating wire.
  • proximal tube is rotatably connected with the handle, and the other end is fixedly connected to the proximal end of the rotating mechanism; the inside of the rotating mechanism is slidably connected to the operating wire so that the operating wire follows The rotating mechanism rotates and moves within the rotating mechanism.
  • the rotating mechanism includes a first follower fixedly connected to the proximal tube, and a first special-shaped tube covered and fixed on the outer surface of the operating wire;
  • the first follower is slidably connected to the first special-shaped tube, so as to transmit a rotating torque to the first special-shaped tube, and enable the first special-shaped tube to slide relative to the first follower.
  • the length of the first special-shaped tube is greater than or equal to the farthest moving distance of the control slider on the handle.
  • the rotating mechanism further includes a driving member connected to the outer wall of the proximal tube, the driving member can slide axially along the proximal tube but cannot rotate with the proximal tube, and the driving member is Cylindrical structure, anti-skid patterns are provided on the outer circumferential wall of the driving member.
  • the driving member includes a driving bag, a pin shaft and a positioning cap;
  • the driving bladder is a tubular structure sheathed on the proximal tube; the inner wall of the driving bladder is provided with a receiving groove, and the pin shaft is provided in the receiving groove of the driving bladder; the positioning cap is provided in The end of the driving capsule is used to fix the pin on the outer wall of the proximal tube.
  • the driving member further includes a compression spring, two pin shafts are arranged in one accommodating groove of the driving bag, and the compression spring is arranged between the two pin shafts.
  • the driving part and the first follower and/or the proximal tube are an integral structure.
  • it further includes a driven mechanism through which the proximal tube is rotatably connected to the handle;
  • the driven mechanism includes a second follower and a second special-shaped tube; the second follower is fixedly connected to the proximal tube; the second follower is slidably connected to the second special-shaped tube; The second special-shaped tube is fixedly connected to the outer surface of the operating wire.
  • the driven mechanism further includes a fixed cap screwed on the end of the handle; the proximal tube penetrates the inside of the fixed cap; the inner core of the handle is provided with a cylindrical hole; the The second follower is arranged in the cylindrical hole and can rotate in the cylindrical hole.
  • connection between the rotating mechanism and the operating wire is a key connection.
  • an endoscopic surgical instrument including: an operating wire, an outer tube, a rotating mechanism, and an action member, wherein the operating wire is used to transmit surgical actions;
  • the outer tube includes a proximal tube and a distal tube,
  • the operating wire penetrates the inside of the proximal tube and the distal tube;
  • the rotating mechanism connects the proximal tube and the distal tube;
  • the action member is arranged at the end of the distal tube and connects with the operating wire.
  • the proximal end of the rotation mechanism is rotatably connected to the proximal tube, and the distal end of the rotation mechanism is rotatably connected to the distal tube; the inside of the rotation mechanism is slidably connected to the operating wire, so that the The operating wire rotates with the rotating mechanism and can move in the rotating mechanism.
  • an endoscopic surgical instrument which includes an operating wire, an outer tube, a rotating mechanism and an action piece.
  • the outer tube further includes a proximal tube and a distal tube
  • the rotating mechanism is arranged between the proximal tube and the distal tube.
  • the inner part of the rotating mechanism is slidably connected with the operating wire, so that the operating wire rotates with the rotating mechanism and can move in the rotating mechanism.
  • the operating wire is driven to rotate by rotating the proximal tube or the rotating mechanism to adjust the angle of the moving part, without turning the handle for easy operation.
  • the operator can directly operate the proximal tube for rotation, which reduces the difficulty of the operation and facilitates the implementation of the rotation operation.
  • Figure 1 is a schematic structural diagram of an endoscopic surgical instrument of this application
  • Figure 2 is a schematic structural diagram of a rotating mechanism of this application.
  • Figure 3 is a schematic cross-sectional structure diagram of the driving element of the application.
  • Fig. 4 is a schematic side view of the structure of a driving element of the application.
  • Figure 5 is a schematic side view of another driving element of the application.
  • Figure 6 is a schematic diagram of the structure of the driven mechanism of the application.
  • Fig. 7 is a schematic structural diagram of another endoscopic surgical instrument of this application.
  • the distal end the end of the entire device placed in the human body
  • this end is mainly used to perform surgical actions on the tissue
  • the end outside the body is called the proximal end, and this end is mainly used Operate by the operator.
  • the distal end of each component refers to the end close to the internal body
  • the proximal end of each component refers to the end close to the external body.
  • Fig. 1 is a schematic structural diagram of an endoscopic surgical instrument of this application.
  • the endoscopic surgical instrument includes: a handle 1, an operating wire 2, an outer tube 3, a rotating mechanism 4, and an action member 5.
  • the handle 1 is used to implement surgical actions, and may include a handle body, a slider, and an operating component.
  • the inner core of the handle body is provided with a cavity to introduce the proximal end of the operating wire 2.
  • the slider can slide on the handle body, and the proximal end of the operating wire 2 is connected through the slider on the handle body, and the operating wire 2 is pulled to move, driving the action member 5 to open and close.
  • the operating parts can be two rings set on the slider and a ring set on the end of the handle body. In actual applications, the two rings on the slider can be used to insert two fingers, such as index fingers and Middle finger; the ring on the end is used to insert the thumb to move the slider with the force of the fingers.
  • the operating wire 2 is connected to the handle 1 to transmit surgical actions.
  • the operating wire 2 is connected to the slider on the handle 1 to be able to transmit surgical actions.
  • the operating wire 2 can transmit a pulling force or a pushing force, so that the actuating member 5 generates a corresponding opening and closing action.
  • the operating wire 2 can also transmit a rotating torque, so that the action member 5 produces a corresponding rotating action.
  • the length of the operating wire 2 should ensure that it can extend from the patient's body to the body, and can also have different length specifications for different patients. Therefore, the operating wire 2 can be a steel wire rope wound from multiple strands of stainless steel wire, or a single wire, and the corresponding type should be selected according to actual needs.
  • the outer tube 3 includes a proximal tube 31 and a distal tube 32, and the operating wire 2 penetrates the inside of the proximal tube 31 and the distal tube 32.
  • the outer tube 3 has three functions. One is to guide the operating wire 2 into the patient's body; the other is to act as an operating component for rotating the operating wire 2; and the third is to transmit circumferential force and axial force. Therefore, the outer tube 3 has two parts, a proximal tube 31 and a distal tube 32.
  • the proximal tube 31 is located outside the patient's body during the actual operation, and the distal tube 32 extends into the patient's body.
  • the proximal tube 31 and the distal tube 32 can be made of plastic hoses of the same material, and a spirally extending support spring is arranged inside, so that the proximal tube 31 and the distal tube 32 can be squeezed by the sidewall tissue of the digestive tract. , Can still maintain the tubular state, avoid affecting the action of internal devices.
  • the endoscopic surgical instrument provided by the present application can divide the distal part and the proximal part of the outer tube 3, namely the proximal tube 31 and the distal tube 32, so that the proximal end outside the endoscope
  • the tube 31 can generate a degree of freedom of rotation in the circumferential direction relative to the distal tube 32, and then transmits the rotational motion to the operating wire 2 in the central part of the instrument through the proximal end of the proximal tube 31, and further transmits it to the action part of the instrument head 5. Enable the action member 5 to rotate accurately.
  • the rotating mechanism 4 is used to connect the proximal tube 31 and the distal tube 32 so that the proximal tube 31 can rotate relative to the distal tube 32.
  • the rotating mechanism 4 plays a role of adapting, that is, the rotating mechanism 4 enables the proximal tube 31 and the distal tube 32 to rotate with each other while being connected to each other. Therefore, the actual During the operation, after the entire outer tube 3 is input into the patient's body, the proximal tube 31 located outside the body can be rotated to drive the operating wire 2 to rotate, so as to finally adjust the angle of the action member 5.
  • one end of the proximal tube 31 is rotatably connected to the handle 1, and the other end is fixedly connected to the end of the rotating mechanism 4;
  • the inside of the rotating mechanism 4 is slidably connected to the operating wire 2 so that the operating wire 2 rotates with the rotating mechanism 4 and moves within the rotating mechanism 4.
  • the end of the handle 1 can be provided with a sliding groove
  • the proximal tube 31 is provided with a protrusion corresponding to the shape of the sliding groove, so that the proximal tube 31 can be connected to the handle 1 The end position, and can rotate relative to the handle 1.
  • the distal end of the proximal tube 31 is fixedly connected to the rotating mechanism 4, and is connected to the operating wire 2 in the tube through the rotating mechanism 4.
  • the rotational torque acting on the proximal tube 31 can be transmitted to the rotating
  • the mechanism 4 is further transmitted to the operating wire 2 by the rotating mechanism 4, so that the operating wire 2 also rotates.
  • the rotating mechanism 4 can rotate relative to the distal tube 32, when the proximal tube 31 is rotated, the distal tube 32 remains stationary, that is, the rotation process will not be affected by the tissues in the patient's body. Will be affected by the clamp of the endoscopic equipment.
  • the rotating mechanism 4 and the operating wire 2 adopt a sliding connection, that is, the rotating mechanism 4 can drive the operating wire 2 to rotate, but the movement of the operating wire 2 will not be restricted by the rotating mechanism 4. Therefore, the technology provided in this application In the solution, the proximal tube 31 can be used to drive the operation wire 2 to rotate under the premise of ensuring that the operation movement transmitted by the operation wire 2 is not affected.
  • the action member 5 is arranged at the end of the distal tube 32 and connected to the operating wire 2.
  • the action piece 5 provided in the present application may also be different.
  • the action piece 5 may be one of a snare, a hemostatic clip, a biopsy forceps, a foreign body forceps, or a cutting knife.
  • the present application can also divide the distal part and the proximal part of the outer tube 3 of the instrument, and add a rotating mechanism 4 between the two, which is relative to the proximal tube 31 and the distal part.
  • the end tube 32 has a degree of freedom of rotation in the circumferential direction, and transmits the rotating motion to the operating wire 2 in the central part of the instrument, and further to the action member 5 at the distal end of the instrument, so that the action member 5 can rotate accurately. Therefore, the surgeon himself or his assistant can control the rotational movement of the action member 5 by rotating the proximal tube 31, which improves the convenience of instrument operation.
  • the rotating mechanism 4 includes a first follower 41 fixedly connected to the proximal tube 31, and a first special-shaped tube 42 that is wrapped and fixed on the outer surface of the operating wire 2;
  • a follower 41 is slidably connected to the first special-shaped tube 42 to transmit a rotational torque to the first special-shaped tube 42 and to enable the first special-shaped tube 42 to slide relative to the first follower 41.
  • the first follower 41 can be a cylindrical structure with a hole in the middle, so that the first follower 41 can extend from the end of the proximal tube 31 to the inside of the tube body.
  • the first special-shaped tube 42 can be sleeved on the outer surface of the operating wire 2 and fixed together, and can rotate or move together with the operating wire 2.
  • the first follower 41 and the first special-shaped tube 42 have a mutually matched structure to transmit a rotating torque.
  • the first special-shaped tube 42 may be a tube structure with strip-shaped protrusions on the outer wall
  • the first follower 41 is a tube-shaped structure with U-shaped grooves on the inner wall, and the strip-shaped protrusions and U-shaped recesses
  • the restriction between the groove walls of the groove can realize that the first follower 41 drives the first special-shaped tube 42 to rotate, and the strip-shaped protrusion and the U-shaped groove can also slide relatively along the groove. Therefore, The rotating torque can be transmitted to the operating wire 2 without affecting the movement of the operating wire 2.
  • the connection between the rotating mechanism 4 and the operating wire 2 is a key connection, that is, through a flat key, a wedge-shaped key spline, etc., the transmission is transmitted under the premise of ensuring mutual sliding.
  • the cross-sectional shape of the first special-shaped tube 42 can also be a regular or irregular shape such as a "back" shape, a rhombus or a polygon, and the corresponding first follower 41 also has a matching shape and structure, as long as it can transmit Both the torque of rotation and the mutual sliding can be used as technical solutions that can be adopted for the sliding connection of the present application.
  • the first special-shaped tube 42 needs to slide relative to the first follower 41, and the maximum sliding distance during the operation is often the same according to the farthest moving distance of the control slider on the handle, so in the part of this application
  • the length of the first special-shaped tube 42 is greater than or equal to the farthest moving distance of the control slider on the handle 1, that is, during the sliding of the control slider on the handle 1 from one end of the handle 1 to the other end, the first A follower 41 can also run from one end of the first special-shaped tube 42 to the other end, so that the first special-shaped tube 42 will not interact with the first follower 41 during the operation. Separation to ensure the smooth progress of the operation.
  • the rotating mechanism 4 further includes a driving member 43 fixedly connected to the outer wall of the proximal tube 31, so
  • the driving member 43 has a cylindrical structure, and the outer circumferential wall of the driving member 43 is provided with anti-skid patterns.
  • the driving member 43 may be a cylindrical structure sleeved on the outer wall of the proximal tube 31, which can be used for operation by the surgeon, and the cylindrical structure of the driving member 43 increases the moment arm during rotation, thereby Under the same rotating force, a larger rotating torque is produced.
  • the anti-skid pattern on the driving member 43 can also be used to reduce the slipping phenomenon during the rotation, thereby making the rotation process more accurate.
  • the driving member 43 includes a driving bag 431, a pin shaft 432 and a positioning cap 433.
  • the driving capsule 431 is a tubular structure sheathed on the proximal tube 31; the inner wall of the driving capsule 431 is provided with a receiving groove, and the pin 432 is arranged in the receiving groove of the driving capsule 431;
  • the positioning cap 433 is provided at the end of the driving capsule 431 to fix the pin 432 on the outer wall of the proximal tube 31.
  • the driving capsule 431 can be made of plastic or soft plastic material to improve the comfort of operation and increase the frictional force during the rotation process.
  • the proximal end The tube 31 can rotate with the driving bladder 431, that is, under the condition that the original structure of the proximal tube 31 is maintained, the cooperation between the driving member 43 and the proximal tube 31 is realized.
  • the pin shaft 432 and the positioning cap 433 also enable the driving bladder 431 to move on the proximal tube 31 while transmitting the rotational torque, thereby changing the position of the driving bladder 431 to adapt to the operating habits of different surgeons. .
  • the positioning cap 433 can be connected with the driving capsule 431 through a snap or latch structure, and has a certain elastic function to press the pin shaft 432 against the outer wall of the proximal tube 31 or produce a direction toward the outer wall of the proximal tube 31.
  • the force is shown in FIG. 5, the driving member 43 further includes a compression spring 434, two pin shafts 432 are arranged in one receiving groove of the driving bag 431, and the compression spring 434 is arranged in two Between the pin 432.
  • a one-way bearing structure can be formed inside the driving capsule 431, so that the driving capsule 431 can slide relative to the proximal tube 31, but cannot rotate relative to the proximal tube 31.
  • the compression spring 434 can also buffer the rotation torque and reduce the rotation delay. Make the rotation process more stable.
  • the main function of the driving member 43 is to perform a rotating operation. Therefore, in some embodiments of the present application, the driving member 43 and the first driven member 41 and/or the proximal end
  • the tube 31 is an integral structure. That is, in practical applications, the component structure can be simplified through the integrated structure, thereby improving the stability and reliability of the entire device.
  • other structures that can be imagined in the field based on the above-mentioned features, such as the driving member 43 and the first follower 41, the driving member 43 and the proximal tube 31, or the driving member 43 and the first driven member 41 and the proximal end All the cases where the tubes 31 are of integral structure belong to the protection scope of this application.
  • the endoscopic surgical instrument further includes a driven mechanism 6, and the proximal tube 31 is rotatably connected to the handle 1 through the driven mechanism 6.
  • the driven mechanism 6 includes a second driven member 61 and a second special-shaped tube 62; the second driven member 61 is fixedly connected to the proximal tube 31; the second driven member 61 is slidably connected to the first Two special-shaped tubes 62; The second special-shaped tubes 62 are fixedly connected to the outer surface of the operating wire 2.
  • the driven mechanism 6 may be similar in structure to the rotating mechanism 4 and have the same function, both of which are to realize mutual rotation between the proximal tube 31 and the adjacent components.
  • the driven mechanism 6 also includes a fixed cap 11 screwed on the end of the handle 1; the proximal tube 31 penetrates the inside of the fixed cap 11; the inner core of the handle 1 is provided with Cylindrical hole 12; the second follower 61 is disposed in the cylindrical hole 12 and can rotate in the cylindrical hole 12.
  • the driven mechanism 6 can be slidably connected with the operating wire 2 at the positions of the two ends of the proximal tube 31 on the premise that the proximal tube 31 can be rotated, which can also increase the torque transmission effect of the proximal tube 31 , So improve the transmission accuracy of the rotation action.
  • the present application also provides an endoscopic surgical instrument, as shown in FIG. 7, comprising: an operating wire 2 to transmit surgical actions; the outer tube 3 includes a proximal tube 31 and a distal tube 32, and the operating wire 2 penetrates the The inside of the proximal tube 31 and the distal tube 32; the rotating mechanism 4, which connects the proximal tube 31 and the distal tube 32; the action member 5, which is arranged at the distal end of the distal tube 32, and connects the operation Wire 2; wherein the proximal end of the rotating mechanism 4 is rotatably connected to the proximal tube 31, and the distal end of the rotating mechanism 4 is rotatably connected to the distal tube 32; the interior of the rotating mechanism 4 The operating wire 2 is slidably connected so that the operating wire 2 rotates with the rotating mechanism 4 and can move in the rotating mechanism 4.
  • the proximal tube 31 and the distal tube 32 may not rotate with each other, but the rotating mechanism 4 drives the operating wire 2 to rotate.
  • the rotation mechanism 4 is set at the position where the proximal tube 31 and the distal tube 32 connect, so that the rotation mechanism 4 is close to the opening position of the endoscope forceps, and the surgical operator can directly rotate the rotation mechanism 4 A rotating torque is applied to the operating wire 2, and finally the operating member 5 is controlled to perform a rotating operation.
  • the principle of use of the endoscopic surgical instrument is to clamp the wound of the stomach as an example, which may include: lower the endoscope for conventional wound closure surgery; take out an assembled endoscope
  • For surgical instruments lightly pull the slider of the handle 1 to close the distal action piece 5, namely the hemostatic clip, insert the hemostatic clip into the clamp channel of the endoscope and send it to the wound, and then push the handle slider to open the hemostatic clip.
  • the hemostatic clip is in a non-ideal state at this time, the surgeon needs to quickly rotate the driver 43 or directly rotate the proximal tube 31 to drive the hemostatic clip mechanism to make a corresponding rotation.
  • the assistant will stop the bleeding. Release the clip and take out the other parts of the device from the endoscope.
  • the device can be delivered as described above until the wound is completely closed.
  • the manufacturing and assembly process of the endoscopic surgical instruments is simple and suitable for all kinds of instruments that require rotation, such as rotatable snares, rotatable hemostatic clamps, rotatable biopsy forceps or foreign body forceps, etc. medical instruments. And it allows the operator to rotate the proximal tube 31 autonomously to drive the operation wire 2 and the action piece 5 to rotate the distal mechanism, which reduces the coordination requirements between the operator and the assistant, shortens the operation time, and is accurate and efficient. The completion of the operation process reduces the patient’s pain and greatly reduces the risk of shock and even death caused by long-term bleeding.

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  • Nuclear Medicine, Radiotherapy & Molecular Imaging (AREA)
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Abstract

L'invention concerne un instrument chirurgical endoscopique, comprenant : un fil d'opération (2), un tube externe (3), un mécanisme rotatif (4) et un élément d'actionnement (5). Le tube externe (3) comprend en outre un tube proximal (31) et un tube distal (32), et le mécanisme rotatif (4) est agencé entre le tube proximal (31) et le tube distal (32). Le fil d'opération (2) est relié de manière coulissante à l'intérieur du mécanisme rotatif (4), de telle sorte que le fil d'opération (2) tourne avec le mécanisme rotatif (4) et peut se déplacer dans le mécanisme rotatif (4). Dans une application pratique, une infirmière peut faire tourner une poignée (1) pour régler l'angle de l'élément d'actionnement (5) ; ou, un opérateur peut faire tourner le tube proximal (31) ou le mécanisme rotatif (4) pour entraîner le fil d'actionnement (2) en rotation de façon à régler l'angle de l'élément d'actionnement (5), ce qui permet de réduire une difficulté de fonctionnement et de faciliter des opérations de rotation de précision.
PCT/CN2020/078454 2019-06-06 2020-03-09 Instrument chirurgical endoscopique WO2020244267A1 (fr)

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CN201910489341.2 2019-06-06
CN201910489341.2A CN110051391B (zh) 2019-06-06 2019-06-06 一种内窥镜手术器械

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CN110051391B (zh) * 2019-06-06 2024-03-26 南微医学科技股份有限公司 一种内窥镜手术器械
CN113812999B (zh) * 2021-08-30 2023-03-14 勾善淼 一种基于弹性金属的钳夹系统

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