Integrated bendable endoscopic surgical device

Abstract

The invention discloses an integrated bendable endoscopic surgical device, and relates to the technical field of surgical instruments. The integrated bendable endoscopic surgical device comprises an endoscope follow-up system, a replaceable surgical tool system and a bending control system, the endoscope follow-up system is composed of a host and an endoscope connected with the host, and the replaceable surgical tool system comprises ear forceps, an aspirator and an ablation tube. The replaceable surgical tool system has the bendable performance; the size and parameter setting of the integrated bendable endoscopic surgery device are matched with the structural characteristics of bony cavities of outer and middle ears and nasal cavity paranasal sinus, the integrated bendable endoscopic surgery device can be used for ear endoscopic surgery and nasal endoscopic surgery scenes, the front end of an endoscopic system can be freely bent, the curvature is controllable, the rigidity is variable, and the front end can be converted into high rigidity after being bent so as to keep stability. In the integrated endoscope device, an integrated instrument does not occupy an operation channel and can be matched with an independent operation instrument to carry out three-hand operation.

Description

Technical Field

[0001] The present invention relates to the technical field of surgical instruments, in particular to an integrated flexible endoscopic surgical device. Background Art

[0002] Endoscopes are important tools for medical examinations and surgical operations, such as otoscopes and nasal endoscopes. At present, otoscopes and nasal endoscopes have become routine methods for external and middle ear, nasal cavity and sinus and some skull base surgeries, and have broad development prospects and application potential. However, the otoscopes used in surgery at this stage are all hard rigid endoscopes and cannot be bent. The structure of the middle ear cavity and nasal cavity and sinus is irregular, and the lens and instruments of the hard endoscope are blocked by the nasal concha, the outer wall of the sinus or the external auditory canal, and the bone wall of the tympanic cavity, and cannot directly reach the lesion deep to the side of the surgical field. Therefore, it is usually necessary to remove the bone that blocks the field of view on the outside before in-depth observation and treatment of the lesion base. This process will destroy many originally normal anatomical structures. On the other hand, when operating, the surgeon holds the endoscope and surgical instruments in both hands and extends them into the surgical cavity. Due to the narrow bony cavity of the ear and nasal cavity, the endoscope and instruments often touch each other in a limited space, and their interaction force will affect the surgical operation. Although existing soft endoscopes such as fiber laryngoscopes can also be made with smaller outer diameters, their front ends are not rigid and stable enough and can only be used in soft tissue cavities, making them unsuitable for ear and nose surgeries. Their integrated instrument channels can only be thin and soft channels, and cannot perform operations that require rigidity and force transmission. In addition, the outer diameters of soft endoscopes with instrument channels are relatively thick and cannot adapt to narrow cavities.

[0003] Publication No. CN117598647A discloses a controllable bending variable stiffness puncture endoscope instrument and control method, wherein a driving unit drives the first round tube to move axially relative to the second round tube to drive the concentric joints of the opposite grooves to bend unidirectionally. The invention can solve the technical problem that endoscopic instruments are difficult to operate flexibly in narrow and curved natural cavities of the human body, and improve the stiffness in the set bending state. It has a simple structure and is easy to operate, and has a wide range of application prospects in medical operations in narrow spaces.

[0004] However, as shown in the above technology, this technology is to set two inner and outer circular tubes, and drive the first circular tube to move axially relative to the second circular tube to drive the opposite groove concentric joints to bend unidirectionally, which can only realize the unidirectional bending and direction change of the second circular tube. In actual operation, it is also necessary to have bending in different directions to extend into cavities in different directions, and it is also necessary to push and insert. Therefore, the whole device needs to be held by hand for steering and pushing operations, and manual operation is not precise enough and is prone to shaking, which increases the difficulty of operation to a certain extent.

[0005] Therefore, there is an urgent clinical need for a small-scale surgical endoscope system that integrates instruments and endoscopes, can be adaptively bent, can be stably turned to different directions, and can be axially pushed in, for surgeries in narrow bony cavities, to improve surgical efficiency, reduce additional trauma caused by exposing the surgical field, and enhance the minimally invasive nature of endoscopic surgeries. Summary of the Invention

[0006] Aiming at the deficiencies of the prior art, the present invention provides an integrated bendable endoscope surgical device, which solves the problems of the prior art.

[0007] To achieve the above objectives, the present invention is realized through the following technical solutions: an integrated bendable endoscope surgical device, including an endoscope follow-up system, a replaceable surgical tool system, and a bending control system. The endoscope follow-up system consists of a host and an endoscope connected thereto. The replaceable surgical tool system includes an ear forceps, a suction device, and an ablation tube, and the replaceable surgical tool system has bendable performance. The bending control system includes a steering sleeve and an axial drive seat for driving the axial movement of the steering sleeve. The steering sleeve is used to penetrate the endoscope and the replaceable surgical tool system. The axial drive seat is also provided with a steering drive mechanism for installing the steering sleeve and driving the bending and rotation of the steering sleeve. The steering sleeve has toughness, and a plurality of notches are arranged side by side on the side of the end of the steering sleeve away from the steering drive mechanism. The steering drive mechanism deforms the notch part by pushing and pulling the end of the steering sleeve to bend the steering sleeve; The steering drive mechanism includes a pair of brackets. The steering sleeve rotates through the pair of brackets. An idler wheel is axially slidably sleeved outside the steering sleeve and between the pair of brackets. A resilient push rod is fixed between the part of the idler wheel extending into the steering sleeve and the inner wall of the bent end of the steering sleeve. By rotating the idler wheel, the steering sleeve is driven to rotate, and by axially sliding the idler wheel, the resilient push rod pushes and pulls the end of the steering sleeve to bend the end of the steering sleeve.

[0008] Preferably, a limit sleeve is rotatably penetrated through between the pair of brackets, and the limit sleeve is fixedly sleeved outside the steering sleeve. A sliding key is arranged inside the idler wheel and penetrates through the limit sleeve and the steering sleeve. One end of the resilient push rod is fixed to the sliding key. Through grooves adapted to the sliding key are opened on the surfaces of the limit sleeve and the steering sleeve to limit the sliding range of the idler wheel.

[0009] Preferably, the axial drive seat includes a base. The top of the base is rotatably connected to a lead screw through a bearing, and the lead screw is parallel to the axis of the steering sleeve. A moving seat is threadedly connected to the outside of the lead screw, and the bracket is fixedly connected to the top of the moving seat. One end of the lead screw extends outside the base and is fixedly connected to a cap nut. A catheter for axially guiding the steering sleeve is also provided on the top of the base away from the cap nut end.

[0010] Preferably, a plurality of balls are rotatably connected to the bottom of the movable seat, and the movable seat is rollingly connected to the bottom of the inner surface of the base via the balls.

[0011] Preferably, when the thumbwheel is located in the middle position inside a pair of brackets, the direction-changing sleeve is in a straight state, and springs are provided on both sides of the thumbwheel to limit the thumbwheel to be centered. A positioning structure is provided on the top of the movable seat to elastically press the thumbwheel to fix the position of the thumbwheel, and both ends of the spring respectively abut the thumbwheel and the bracket, and the specifications of the springs on both sides are consistent to center the thumbwheel.

[0012] Preferably, the positioning structure is an elastic metal sheet, one end of the elastic metal sheet is engaged with the top of the movable seat, and a non-slip rubber pad is adhered to the top of the elastic metal sheet, the surface of the dial wheel is provided with an anti-slip structure, the elastic metal sheet drives the non-slip rubber pad to elastically press the surface of the dial wheel, and the side of the movable seat is provided with a limiting structure for limiting the position of the elastic metal sheet.

[0013] Preferably, the limiting structure includes two upper and lower rows of grooves opened on the side of the movable seat, and the other end of the elastic metal sheet is bent downward and bent into an arch shape. When the arched part of the elastic metal sheet is respectively engaged in the upper and lower rows of grooves, the elastic metal sheet and the anti-slip rubber pad are respectively kept to press the dial wheel and disengage the dial wheel.

[0014] Preferably, a guide bucket is fixedly sleeved at one end of the change-of-direction sleeve close to the steering drive mechanism, and the guide bucket is used to guide the endoscope and the replaceable surgical tool system to be inserted into the change-of-direction sleeve. The guide bucket is provided with a locking piece extending into the change-of-direction sleeve, and the locking piece is operated by pressing and turning to quickly lock the endoscope, so that the endoscope and the change-of-direction sleeve move with it. The middle part of the guide bucket is flatly arranged, so that the replaceable surgical tool system and the endoscope can be inserted in an offset manner up and down, and the locking piece can press and lock the endoscope on the lower layer.

[0015] Preferably, the locking member includes a locking tube fixed on the guide bucket, and a metal block is axially slidably arranged inside the locking tube, one end of the metal block is connected to a damping rubber block, the other end of the metal block is fixedly connected to a pressure rod, the threaded sleeve of the locking tube is provided with a magnetic cover, the magnetic cover is used to magnetically attract the metal block to separate from the changing sleeve, one end of the pressure rod extends to the outside of the magnetic cover and is fixedly connected to the pressure cover, a positioning shaft is radially penetrated inside the metal block, and positioning grooves are axially symmetrically provided on both sides of the inner wall of the locking tube, the positioning grooves are composed of an axially distributed long groove and a plurality of rows of annular grooves connected to its sides, the metal block can slide axially when the positioning shaft is located in the long groove, and the metal block cannot slide axially when the positioning shaft is located in the annular groove.

[0016] Preferably, the replaceable surgical tool system includes ear forceps, an aspirator and an ablation tube, the ear forceps include a fixed handle and a rotating handle rotatably connected to each other, one end of the fixed handle and the rotating handle are both rings for fingers to insert, the other end of the fixed handle is fixedly connected to an elastic strip, and the other end of the elastic strip is fixedly connected to a fixed jaw, the top of the fixed jaw is rotatably connected to a rotating jaw, the outer sleeve of the elastic strip is provided with a grooved circular tube, the grooved circular tube is elastic and is bent by surface grooves, the two ends of the grooved circular tube are respectively connected to the rotating jaw and the rotating handle, the rotating jaw is rotated close to the fixed jaw by pinching the rotating handle and using the grooved circular tube to transmit thrust.

[0017] The present invention provides an integrated flexible endoscopic surgical device. Compared with the prior art, it has the following beneficial effects: 1. The integrated flexible endoscopic surgical device, the axial drive seat can be stably installed by additionally setting a bracket, without hand-held operation, and the axial drive seat can promote the axial telescopic movement of the change-direction sleeve by rotating, and the steering drive mechanism on the axial drive seat can realize the bending and steering effect of the change-direction sleeve by rotating and sliding the dial, so that the change-direction sleeve has 6 degrees of freedom, and multiple operating structures are close, and can be held in one hand and operated with different degrees of freedom respectively and simultaneously with fingers, and the free hand can operate the endoscope, the structural integration is high, and the steering is more flexible and convenient, which is convenient for more flexible movement in the body cavity; the size and parameter settings of the device match the bony cavity structure characteristics of the external middle ear and nasal cavity and sinus, and can be used in ear endoscopic surgery and nasal endoscopic surgery scenes, and the front end of the endoscope system can be freely bent and the curvature is controllable, the stiffness is variable, and it can be converted to a higher stiffness after bending to maintain stability. In the integrated endoscopic device, the integrated instrument does not occupy the surgical channel, and can also be used in conjunction with independent surgical instruments (such as an endoscope integrated suction device with a biting forceps) for "three-hand" operation.

[0018] 2. The integrated flexible endoscopic surgical device can keep the dial wheel in the middle position through the thrust of the springs on both sides, thereby keeping the deflection sleeve in a straight state in a natural state, without the need for manual straightening, and is also convenient for insertion into the body.

[0019] 3. The integrated flexible endoscopic surgical device, by setting an elastic metal sheet, uses its elasticity to compress the anti-slip structure on the surface of the thumbwheel, which can limit the position of the thumbwheel, thereby offsetting the elastic force of the spring and maintaining the curvature of the change-of-direction sleeve. When inserting the endoscope, the curvature of the change-of-direction sleeve can be affected, and the maintenance effect is good, which facilitates the smooth bending and insertion of the endoscope. The setting of the two rows of grooves can limit the elastic metal sheet to two states of compression or looseness, and the structure is simple and practical.

[0020] 4. The integrated flexible endoscopic surgical device has a trumpet-shaped guide bucket, which is convenient for the endoscope to be quickly aligned and inserted into the redirecting sleeve. The locking piece on the guide bucket can quickly lock the endoscope when the redirecting sleeve is pushed, so that the endoscope can be moved synchronously when the redirecting sleeve is pushed, thereby maintaining a continuous endoscopic effect without the need for separate hand-held operations. The positioning groove and the positioning shaft cooperate to achieve compression and locking of the endoscope through simple pressing and rotating operations. When rotating to unlock, the metal block can be automatically reset by magnetic attraction, which is easy to use. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] Figure 1 It is a schematic diagram of the overall structure of the present invention; Figure 2 is a schematic diagram of a bending control system of the present invention; Figure 3 A schematic diagram of a ball bearing at the bottom of a movable seat of the present invention; Figure 4 is a cross-sectional schematic diagram of the steering drive mechanism of the present invention; Figure 5 It is a cross-sectional schematic diagram of the movable seat, the elastic metal sheet and the dial wheel of the present invention; Figure 6 An exploded view of the locking member of the present invention; Figure 7 is a cross-sectional schematic diagram of a locking tube of the present invention; Figure 8 It is a schematic diagram of the guide bucket and the locking member of the present invention; Fig. 9 It is a structural schematic diagram of ear pliers of the present invention.

[0022] In the figure: 1-direction-changing sleeve, 11-notch; 2-axial drive seat, 21-base, 22-screw, 23-moving seat, 24-screw cap, 25-ball, 26-groove, 27-conduit; 3-steering drive mechanism, 31-bracket, 32-dial wheel, 33-elastic push rod, 34-limit sleeve, 35-sliding key, 36-through slot, 37-spring, 38-elastic metal sheet, 39-anti-slip rubber pad, 310-anti-slip structure; 4-Guide bucket; 5-locking piece, 51-locking tube, 52-metal block, 53-damping rubber block, 54-pressure rod, 55-magnetic cover, 56-positioning shaft, 57-positioning groove, 571-long groove, 572-ring groove; 6- Aspirator; 7-Host; 8-Endoscope; 9-ear pliers; 91-fixed handle; 92-rotating handle; 93-elastic strip; 94-fixed clamp; 95-rotating clamp; 96-grooved round tube. DETAILED DESCRIPTION

[0023] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0024] The present invention provides four technical solutions: Figure 1-Figure 4 The first embodiment is shown: an integrated flexible endoscopic surgical device, including an endoscope follow-up system, a replaceable surgical tool system and a bending control system, the endoscope follow-up system is composed of a main unit 7 and an endoscope 8 connected thereto, the replaceable surgical tool system includes ear forceps, an aspirator and an ablation tube (the aspirator is used as an example in the figure), and the replaceable surgical tool system has a bendable property, for example, the pipes of the ear forceps, the aspirator and the ablation tube are made of tough tubes, the ear forceps are driven by wire pulling and other methods to control the opening and closing of the jaw ends, and the bending control system includes a change-direction sleeve 1 and a drive for the change-direction sleeve 1 to axially control the opening and closing of the jaw ends. The movable axial drive seat 2, the outer side of the bending end of the change-direction sleeve 1 can be provided with a smooth silicone sleeve, which replaces the change-direction sleeve 1 with relatively high hardness to directly scratch the internal tissue, and the change-direction sleeve 1 is used to penetrate the endoscope 8 and the replaceable surgical tool system. The axial drive seat 2 is also provided with a steering drive mechanism 3 for installing the change-direction sleeve 1 and driving the change-direction sleeve 1 to bend and rotate. The change-direction sleeve 1 has toughness, and a plurality of notches 11 are arranged in parallel on the side of one end of the change-direction sleeve 1 away from the steering drive mechanism 3. The steering drive mechanism 3 pushes and pulls the end of the change-direction sleeve 1 to partially deform the notch 11 so that the change-direction sleeve 1 is bent; The axial drive seat 2 includes a base 21, the top of the base 21 is rotatably connected to a screw rod 22 through a bearing, and the screw rod 22 is parallel to the axis of the change-of-direction sleeve 1, the external thread of the screw rod 22 is connected to a moving seat 23, and the bracket 31 is fixedly connected to the top of the moving seat 23, the bottom of the moving seat 23 is rotatably connected to a plurality of balls 25, and the moving seat 23 is rollingly connected to the bottom of the inner surface of the base 21 through the balls 25, one end of the screw rod 22 extends to the outside of the base 21 and is fixedly connected to a screw cap 24, and a guide tube 27 for axially guiding the change-of-direction sleeve 1 is also provided at the top of the base 21 away from the screw cap 24.

[0025] The steering drive mechanism 3 includes a pair of brackets 31. The direction-changing sleeve 1 rotates and passes through the pair of brackets 31. A dial wheel 32 is provided outside the direction-changing sleeve 1 and is axially slidably sleeved between the pair of brackets 31. An elastic push rod 33 is fixed between the part of the dial wheel 32 extending into the direction-changing sleeve 1 and the inner wall of the bent end of the direction-changing sleeve 1. The elastic push rod 33 has a supporting capacity. The direction-changing sleeve 1 is driven to rotate by rotating the dial wheel 32, and the elastic push rod 33 pushes and pulls the end of the direction-changing sleeve 1 by axially sliding the dial wheel 32 to bend the end of the direction-changing sleeve 1.

[0026] A rotating limit sleeve 34 is passed through a pair of brackets 31, and the limit sleeve 34 is fixedly sleeved on the outside of the changing sleeve 1. A sliding key 35 that passes through the limit sleeve 34 and the changing sleeve 1 is provided on the inner side of the dial wheel 32, and one end of the elastic push rod 33 is fixed to the sliding key 35. The surfaces of the limit sleeve 34 and the changing sleeve 1 are provided with a through groove 36 that is adapted to the sliding key 35, and the sliding range of the dial wheel 32 is limited by the through groove 36.

[0027] The axial drive seat 2 can be stably installed by additionally setting a bracket, and no hand-held operation is required. The axial drive seat 2 can promote the axial telescopic movement of the change-direction sleeve 1 by rotation, and the steering drive mechanism 3 on the axial drive seat 2 can achieve the bending and steering effects of the change-direction sleeve 1 by rotating and sliding the dial wheel 32, so that the change-direction sleeve 1 has 6 degrees of freedom (6 degrees of freedom refer to telescopic, inward and outward bending, clockwise and counterclockwise rotation), and multiple operating structures are close, so it can be held in one hand and the fingers can be used to perform operations with different degrees of freedom separately and simultaneously, and the free hand can operate the endoscope 8. The structure has a high degree of integration, and the steering is more flexible and convenient, which is convenient for more flexible movement in the body cavity.

[0028] Figure 2 and Figure 4 A second embodiment is shown, which mainly differs from the first embodiment in that when the dial wheel 32 is located in the middle position inside a pair of brackets 31, the direction-changing sleeve 1 is in a straight state, and springs 37 are provided on both sides of the dial wheel 32 to limit the centering of the dial wheel 32, and a positioning structure is provided on the top of the movable seat 23 to elastically press the dial wheel 32 to fix the position of the dial wheel 32, and the two ends of the spring 37 respectively abut the dial wheel 32 and the bracket 31, and the specifications of the springs 37 on both sides are consistent to center the dial wheel 32.

[0029] Through the thrust of the springs 37 on both sides, the thumbwheel 32 can be placed in the middle position, thereby keeping the redirection sleeve 1 in a straight state in a natural state, without the need for manual straightening, and also convenient for insertion into the body.

[0030] Figure 5A third embodiment is shown, which mainly differs from the second embodiment in that the positioning structure is an elastic metal sheet 38, one end of the elastic metal sheet 38 is engaged with the top of the movable seat 23, and a non-slip rubber pad 39 is adhered to the top of the elastic metal sheet 38, and an anti-slip structure 310 is provided on the surface of the dial wheel 32. The anti-slip structure 310 is an anti-slip convex point, and can also be a structure such as a texture that can increase the friction between the anti-slip rubber pad 39. The elastic metal sheet 38 drives the non-slip rubber pad 39 to elastically press the surface of the dial wheel 32, and a limiting structure for limiting the position of the elastic metal sheet 38 is provided on the side of the movable seat 23.

[0031] The limiting structure includes two upper and lower rows of grooves 26 opened on the side of the movable seat 23. The other end of the elastic metal sheet 38 is bent downward and bent into an arch shape. When the arched part of the elastic metal sheet 38 is respectively engaged in the upper and lower rows of grooves 26, the elastic metal sheet 38 and the anti-slip rubber pad 39 are respectively kept to press the dial wheel 32 and disengage the dial wheel 32.

[0032] By setting an elastic metal sheet 38 and utilizing its elasticity to compress the anti-slip structure 310 on the surface of the dial wheel 32, the position of the dial wheel 32 can be restricted, thereby offsetting the elastic force of the spring 37 and maintaining the curvature of the change-direction sleeve 1. When inserting the endoscope 8, the curvature of the change-direction sleeve 1 can be affected, and the maintenance effect is good, which facilitates the smooth bending and insertion of the endoscope 8. The setting of the two rows of grooves 26 can limit the elastic metal sheet 38 to two states of compression or loosening, and the structure is simple and practical.

[0033] Figure 6-Figure 8 A fourth embodiment is shown, which mainly differs from the first embodiment in that a guide bucket 4 is fixedly sleeved on one end of the redirecting sleeve 1 close to the steering drive mechanism 3, and the guide bucket 4 is used to guide the endoscope 8 and the replaceable surgical tool system to be inserted into the redirecting sleeve 1. A locking piece 5 extending into the redirecting sleeve 1 is provided on the guide bucket 4, and the locking piece 5 is operated by pressing and rotating to quickly lock the endoscope 8, so that the endoscope 8 and the redirecting sleeve 1 move with it. The middle part of the guide bucket 4 is flatly arranged, so that the replaceable surgical tool system and the endoscope 8 are inserted in an up-and-down dislocation, and the locking piece 5 presses and locks the endoscope 8 on the lower layer. The up-and-down dislocation design ensures that the locking of the endoscope 8 does not affect the movement of the replaceable surgical tool system.

[0034] The locking member 5 includes a locking tube 51 fixed on the guide bucket 4, and a metal block 52 is axially slidably arranged inside the locking tube 51, one end of the metal block 52 is connected to a damping rubber block 53, and the other end of the metal block 52 is fixedly connected to a pressure rod 54, a threaded sleeve of the locking tube 51 is provided with a magnetic cover 55, the magnetic cover 55 is used to magnetically attract the metal block 52 to separate from the redirecting sleeve 1, one end of the pressure rod 54 extends to the outside of the magnetic cover 55 and is fixedly connected to the pressure cover, a positioning shaft 56 radially penetrates the inside of the metal block 52, and positioning grooves 57 are axially symmetrically provided on both sides of the inner wall of the locking tube 51, and the positioning groove 57 is composed of an axially distributed long groove 571 and a plurality of rows of annular grooves 572 connected to the sides thereof, when the positioning shaft 56 is located in the long groove 571, the metal block 52 can slide axially, and when the positioning shaft 56 is located in the annular groove 572, the metal block 52 cannot slide axially.

[0035] The bell mouth of the guide bucket 4 is set to facilitate the endoscope 8 to be quickly aligned and inserted into the redirection sleeve 1, and the locking piece 5 on the guide bucket 4 can quickly lock the endoscope 8 when the redirection sleeve 1 is pushed, so that the endoscope 8 is synchronously driven to move when the redirection sleeve 1 is pushed, and a continuous endoscope effect is maintained without the need for separate hand-held operations; and the positioning groove 57 cooperates with the positioning shaft 56 to achieve a compression and locking of the endoscope 8 by a simple pressing and rotating operation, and when the metal block 52 is automatically reset by the magnetic effect when it is rotated to unlock, which is convenient to use; During surgery, different interchangeable surgical tool systems (e.g. Fig. 9 Ear clamp 9, Figure 1 The aspirator 6 or other instruments such as the ablation tube (not shown in the figure) are inserted into the deflection sleeve 1 and guided to the designated position through the deflection sleeve 1 for surgical operation.

[0036] like Fig. 9 As shown, the ear clamp 9 in this embodiment includes a fixed handle 91 and a rotating handle 92 that are rotatably connected to each other. One end of the fixed handle 91 and the rotating handle 92 are both rings for inserting fingers. The other end of the fixed handle 91 is fixedly connected to an elastic strip 93, and the other end of the elastic strip 93 is fixedly connected to a fixed clamp 94. The top of the fixed clamp 94 is rotatably connected to a rotating clamp 95. The outer sleeve of the elastic strip 93 is provided with a grooved circular tube 96. The grooved circular tube 96 is elastic and can be bent through the surface groove. The two ends of the grooved circular tube 96 are respectively connected to the rotating clamp 95 and the rotating handle 92. By pinching the rotating handle 92 and using the grooved circular tube 96 to transmit thrust, the rotating clamp 95 is rotated to move closer to the fixed clamp 94. By modifying the existing ear clamp, the main body is changed into a structure with elasticity and flexibility, and the grooved circular tube 96 is used to transmit push and pull forces, so that the original hard ear clamp has flexibility and can be bent along with the bending of the deflection sleeve 1.

[0037] Meanwhile, the contents not described in detail in this specification belong to the prior art known to those skilled in the art.

[0038] When in use, first insert the endoscope 8 from the guide bucket 4 into the direction-changing sleeve 1 until the other end of the direction-changing sleeve 1, and use the endoscope 8 for observation. When it is necessary to bend to the side cavity, the endoscope 8 and the direction-changing sleeve 1 can be locked together. At this time, the pressure cover can be pressed, and the metal block 52 can be pressed down by the pressure rod 54 to make the damping rubber block 53 press the endoscope 8, and then the pressure rod 54 can be rotated to make the positioning shaft 56 on the metal block 52 slide into the annular groove 572 to complete self-locking; Then, the sliding dial 32 can push and pull the elastic push rod 33, and then pull or push the bent end of the changing sleeve 1, so that the changing sleeve 1 is deformed and bent from the position of the notch 11. At the same time, the dial 32 can be rotated, and the sliding key 35 can be used to drive the changing sleeve 1 to rotate, so that the end of the changing sleeve 1 is aligned with the cavity; at this time, the rotating cap 24 can be rotated to drive the rotation, and then the moving seat 23 can be driven to move, so that the upper steering drive mechanism 3 and the changing sleeve 1 are extended stably and slowly together, and the multi-directional cooperation allows the changing sleeve 1 to carry the endoscope 8 into the cavity on the side.

[0039] It should be noted that, in this article, relational terms such as first and second, etc. are only used to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Moreover, the terms "include", "comprise" or any other variants thereof are intended to cover non-exclusive inclusion, so that a process, method, article or device including a series of elements includes not only those elements, but also other elements not explicitly listed, or also includes elements inherent to such process, method, article or device.

[0040] Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and spirit of the present invention, and that the scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. An integrated flexible endoscopic surgical device, characterized in that: The invention comprises an endoscope follow-up system, a replaceable surgical tool system and a bending control system, wherein the endoscope follow-up system is composed of a host and an endoscope connected thereto, the replaceable surgical tool system comprises ear forceps, an aspirator and an ablation tube, and the replaceable surgical tool system has a bendable performance, the bending control system comprises a direction-changing sleeve and an axial driving seat for driving the direction-changing sleeve to move axially, the direction-changing sleeve is used to penetrate the endoscope and the replaceable surgical tool system, the axial driving seat is also provided with a steering drive mechanism for installing the direction-changing sleeve and driving the direction-changing sleeve to bend and rotate, the direction-changing sleeve has toughness, and a plurality of notches are arranged in parallel on the side surface of one end of the direction-changing sleeve away from the steering drive mechanism, and the steering drive mechanism deforms the notch portion by pushing and pulling the end of the direction-changing sleeve to make the direction-changing sleeve bend; The steering drive mechanism includes a pair of brackets, the changing sleeve rotates and passes through the pair of brackets, a dial wheel is provided on the outside of the changing sleeve and is located between the pair of brackets and is axially slidably sleeved, an elastic push rod is fixed between the part of the dial wheel extending into the changing sleeve and the inner wall of the bent end of the changing sleeve, the changing sleeve is driven to rotate by rotating the dial wheel, and the elastic push rod pushes and pulls the end of the changing sleeve by axially sliding the dial wheel to make the end of the changing sleeve bend.

2. The integrated flexible endoscopic surgical device according to claim 1, characterized in that: A rotating limit sleeve is passed through a pair of brackets, and the limit sleeve fixed sleeve is arranged on the outside of the changing sleeve. A sliding key passing through the limit sleeve and the changing sleeve is arranged on the inner side of the dial wheel, and one end of the elastic push rod is fixed to the sliding key. The surfaces of the limit sleeve and the changing sleeve are provided with through grooves adapted to the sliding keys, and the sliding range of the dial wheel is limited by the through grooves.

3. The integrated flexible endoscopic surgical device according to claim 1, characterized in that: The axial driving seat includes a base, the top of the base is rotatably connected to a screw rod through a bearing, and the screw rod is parallel to the axis of the changing sleeve, the external thread of the screw rod is connected to a moving seat, and the bracket is fixedly connected to the top of the moving seat, one end of the screw rod extends to the outside of the base and is fixedly connected to a screw cap, and the top of the base away from the screw cap is also provided with a conduit for axially guiding the changing sleeve.

4. The integrated flexible endoscopic surgical device according to claim 3, characterized in that: The bottom of the movable seat is rotatably connected with a plurality of balls, and the movable seat is rollingly connected with the bottom of the inner surface of the base through the balls.

5. The integrated flexible endoscopic surgical device according to claim 4, characterized in that: When the thumbwheel is located in the middle position inside a pair of brackets, the direction-changing sleeve is in a straight state, and springs are provided on both sides of the thumbwheel to limit the thumbwheel to be centered. A positioning structure is provided on the top of the movable seat to elastically press the thumbwheel to fix the position of the thumbwheel, and both ends of the spring respectively abut against the thumbwheel and the bracket, and the specifications of the springs on both sides are consistent to center the thumbwheel.

6. The integrated flexible endoscopic surgical device according to claim 5, characterized in that: The positioning structure is an elastic metal sheet, one end of which is engaged with the top of the movable seat, and a non-slip rubber pad is pasted on the top of the elastic metal sheet. The surface of the dial is provided with an anti-slip structure. The elastic metal sheet drives the non-slip rubber pad to elastically press the surface of the dial, and the side of the movable seat is provided with a limiting structure for limiting the position of the elastic metal sheet.

7. The integrated flexible endoscopic surgical device according to claim 6, characterized in that: The limiting structure includes two upper and lower rows of grooves opened on the side of the moving seat. The other end of the elastic metal sheet is bent downward and bent into an arch shape. When the arched part of the elastic metal sheet is respectively engaged in the upper and lower rows of grooves, the elastic metal sheet and the anti-slip rubber pad are respectively kept to press the dial wheel and disengage the dial wheel.

8. The integrated flexible endoscopic surgical device according to claim 1, characterized in that: A guide bucket is fixedly sleeved on one end of the direction-changing sleeve near the steering drive mechanism. The guide bucket is used to guide the endoscope and the replaceable surgical tool system to be inserted into the interior of the direction-changing sleeve. A locking piece extending into the interior of the direction-changing sleeve is provided on the guide bucket. The locking piece is operated by pressing and rotating to quickly lock the endoscope so that the endoscope and the direction-changing sleeve move with it. The middle part of the guide bucket is flatly arranged so that the replaceable surgical tool system and the endoscope can be inserted in an upper and lower dislocation manner, and the locking piece can press and lock the endoscope on the lower layer.

9. The integrated flexible endoscopic surgical device according to claim 8, characterized in that: The locking piece includes a locking tube fixed on the guide bucket, and a metal block is axially slidably arranged inside the locking tube, one end of the metal block is connected to a damping rubber block, and the other end of the metal block is fixedly connected to a pressure rod, and a threaded sleeve of the locking tube is provided with a magnetic cover, and the magnetic cover is used to magnetically attract the metal block to separate from the changing sleeve, one end of the pressure rod extends to the outside of the magnetic cover and is fixedly connected to the pressure cover, a positioning shaft is radially penetrated inside the metal block, and positioning grooves are axially symmetrically provided on both sides of the inner wall of the locking tube, and the positioning grooves are composed of an axially distributed long groove and a plurality of rows of annular grooves connected to its sides, and the metal block can slide axially when the positioning shaft is located in the long groove, and the metal block cannot slide axially when the positioning shaft is located in the annular groove.

10. The integrated flexible endoscopic surgical device according to claim 1, characterized in that: The replaceable surgical tool system includes ear forceps, an aspirator and an ablation tube. The ear forceps include a fixed handle and a rotating handle that are rotatably connected to each other. One end of the fixed handle and the rotating handle are both rings for fingers to insert. The other end of the fixed handle is fixedly connected to an elastic strip, and the other end of the elastic strip is fixedly connected to a fixed clamp. The top of the fixed clamp is rotatably connected to a rotating clamp. The outer sleeve of the elastic strip is provided with a grooved circular tube. The grooved circular tube is elastic and is bent by surface grooves. The two ends of the grooved circular tube are respectively connected to the rotating jaw and the rotating handle. The rotating jaw is rotated close to the fixed jaw by pinching the rotating handle and using the grooved circular tube to transmit thrust.

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