Tip angle-adjustable ultrasonic power tool bit for nasal skull base endoscope

Abstract

The utility model relates to a tip angle-adjustable ultrasonic power tool bit for a nasal skull base endoscope. The problems that in the prior art, an ultrasonic knife is insufficient in functionality and poor in stability, and flexible functional adjustment is difficult to conduct are solved, and the ultrasonic knife can meet the requirement for operation in a narrow space under an endoscope. The ultrasonic scalpel comprises an assembling handle, one end of the assembling handle is provided with an elastic pressing handle, the other end of the assembling handle is connected with an assembling scalpel cylinder, one end of the assembling scalpel cylinder is provided with an ultrasonic scalpel head, the ultrasonic scalpel head is connected with a transducer arranged in the assembling handle, and a double-gear linkage control structure is arranged in the assembling scalpel cylinder. One end of the double-gear linkage control structure is in linkage with the elastic pressing handle, the other end of the double-gear linkage control structure is connected with a movable cutter head structure, and a rotary adjusting assembly used for adjusting the telescopic length of the assembling cutter cylinder so as to control the exposed length of the ultrasonic cutter head and the movable cutter head structure is arranged between the assembling handle and the assembling cutter cylinder. The multifunctional surgical instrument has the advantages of being capable of adapting to diversified surgical scenes, rich in function, good in adjusting flexibility and good in using effect.

Description

TECHNICAL FIELD

[0001] The utility model relates to medical equipment technical field, concretely relates to a nose base of skull endoscope with tip angle adjustable ultrasonic power tool bit. BACKGROUND

[0002] Through the endoscope nasal surgery because its minimally invasive, full exposure, postoperative recovery fast characteristics, has become the most common surgical method of midline and lateral skull base space, with the expansion of the scope of operation and indications, the range of skull base grinding also increases accordingly, also increases the difficulty of skull base reconstruction. Postoperative severe cerebrospinal fluid leakage may lead to fatal intracranial infection, therefore, the reliable skull base reconstruction after neuroendoscopy is the basic condition of successful operation. The current skull base reconstruction method has no uniform standard, and the reconstruction of different types of skull base defects has no corresponding reconstruction technology, but multi-layer repair is a recognized principle. Skull base reconstruction follows the 3N principle and individualized repair to select repair materials and methods, while emphasizing multi-layer repair, the concept of restoring normal anatomic reduction of skull base cannot be ignored, therefore, in situ autologous bone flap repair can provide rigid reconstruction and has good repair effect. In the process of endoscopic nasal approach surgery, bone loss caused by drill and milling cutter operation is also more, resulting in large bone gap after bone flap reduction, affecting bone healing, and it is difficult to achieve rigid reconstruction of autologous bone flap; on the other hand, a large amount of heat is generated during grinding, which may cause burns to blood vessels and nerves, affecting the surgical effect; in addition, the existing ultrasonic knife has insufficient functionality and poor stability, and it is difficult to perform flexible functional adjustment, and cannot adapt to the surgical field of minimally invasive endoscopic surgery.

[0003] In order to solve the problems existing in the prior art, people have carried out long-term exploration and put forward various kinds of solutions. For example, the Chinese patent document discloses an ultrasonic knife head [CN202020585540.1], which comprises a connecting part, a transition part and a cutting part. The connecting part and the transition part are both cylindrical, the cutting part is a thin sheet with a thickness gradually decreasing from the tail end to the front end, a group of sawteeth are arranged on the outer circumferential side of the cutting part, the thickness of the sawteeth gradually decreases along the extension direction, and the first side of the sawteeth and the axis of the cutting part form a first included angle α which is greater than the second included angle β formed between the second side of the sawteeth and the axis of the cutting part, so that the sawteeth extend obliquely.

[0004] The above-mentioned scheme solves the problem of easy damage of the ultrasonic knife in the prior art to some extent, but the scheme still has many deficiencies, for example: insufficient functionality, poor stability, difficult to perform flexible functional adjustment, and unable to adapt to the surgical field of minimally invasive endoscopic surgery. SUMMARY

[0005] The utility model discloses a nose base of skull endoscope with adjustable angle ultrasonic power tool bit of tip.

[0006] In order to achieve the above object, the utility model adopts the following technical scheme: a nose base of skull endoscope with adjustable angle ultrasonic power tool bit of tip, including assembly handle, the one end of assembly handle is equipped with elastic pressing handle and the other end is connected with assembly cutter cylinder, the one end of assembly cutter cylinder is equipped with ultrasonic tool bit, and the ultrasonic tool bit is connected with the transducer arranged in the assembly handle, and the transducer is connected with the host computer to obtain power, the double gear linkage control structure is equipped in the assembly cutter cylinder, and the one end of double gear linkage control structure is linked with elastic pressing handle and the other end is connected with movable tool bit structure that is correspondingly arranged with ultrasonic tool bit, the rotating type adjusting assembly for adjusting the telescopic length of assembly cutter cylinder to control the exposed length of ultrasonic tool bit and movable tool bit structure is equipped between assembly handle and assembly cutter cylinder, and the diameter specification of assembly cutter cylinder can be set to 3MM.

[0007] In the nose base of skull endoscope with adjustable angle ultrasonic power tool bit of tip, the front end of assembly cutter cylinder is equipped with the illumination lamp group that is annular, and the illumination lamp group is equipped with annular suction layer on the circumferential outside, a plurality of suction pipes are distributed in the circumferential direction on the annular suction layer, the illumination lamp group and the suction pipe are controlled through the host computer, and the switch push button for starting and stopping the illumination lamp group and the suction pipe is respectively equipped on the assembly handle.

[0008] In the nose base of skull endoscope with adjustable angle ultrasonic power tool bit of tip, the front end of assembly cutter cylinder is equipped with the strip-shaped accommodation gap that can be worn out by ultrasonic tool bit, the rotating movable limit slot hole for limiting movable tool bit structure is equipped on the lower side of strip-shaped accommodation gap, and the elastic extrusion buffer area is arranged between rotating movable slot hole and strip-shaped accommodation gap.

[0009] In the nose base of skull endoscope with adjustable angle ultrasonic power tool bit of tip, the double gear linkage control structure includes the linkage cross bar arranged in the assembly handle, the linkage gear is equipped in the middle part of linkage cross bar, and the linkage cross bar is connected with elastic pressing handle through linkage seat, the rear linkage rod is equipped on the front end of linkage cross bar, and the linkage rear gear is respectively sleeved on the both ends of rear linkage rod, the synchronous gear that is mutually engaged with linkage gear is arranged between linkage rear gears, and the linkage front gear that is located at the one end of assembly cutter cylinder away from assembly handle is connected with linkage rear gear through synchronous chain belt, and the linkage front gear is connected through the front linkage rod that is rotatably installed in the inner side of assembly cutter cylinder.

[0010] In the nose base of skull endoscope with tip angle adjustable ultrasonic power cutter head, the movable cutter head structure includes a plug-in cutter seat connected with the front linkage rod, the end of the plug-in cutter seat away from the front linkage rod is provided with a plug-in cylinder, a plurality of positioning through grooves are arranged on the circumference of the plug-in cylinder, a movable cutter head is detachably connected in the plug-in cylinder, a plurality of positioning protrusions corresponding to the positioning through grooves are arranged on the circumference of one end of the movable cutter head, a pressing spring is arranged at the bottom of the positioning protrusion, and one end of the pressing spring away from the positioning protrusion acts on the positioning cavity of the movable cutter head.

[0011] In the nose base of skull endoscope with tip angle adjustable ultrasonic power cutter head, one end of the movable cutter head has a rotating adjustment part, the rotating adjustment part and the movable cutter head have an elastic connection part therebetween, and an arc-shaped elastic reset part is arranged between the rotating adjustment part and the inner side of the circumference of the movable cutter head, the rotating adjustment part is connected with a tension adjustment knob arranged on the elastic pressing handle through a steel wire.

[0012] In the nose base of skull endoscope with tip angle adjustable ultrasonic power cutter head, the elastic pressing handle is provided with a transparent connecting cover plate rotationally positioned with the linkage horizontal rod, the transparent connecting cover plate is provided with an annular sensing part on the outer side of the circumference, a plurality of sensing modules are arranged on the circumference of the annular sensing part, a plurality of clamping force display lamp groups corresponding to the sensing modules are arranged on the circumference of the annular sensing part, a linkage sensing part corresponding to the sensing modules is arranged on the end of the linkage horizontal rod, and the linkage sensing part can rotate synchronously with the linkage horizontal rod, the sensing modules, the sensing lamp groups and the host are connected.

[0013] In the nose base of skull endoscope with tip angle adjustable ultrasonic power cutter head, a pressing shaft acting on the upper end face of the outer side of the synchronous chain belt is rotationally arranged on the assembly cutter barrel, a tensioning shaft acting on the lower end face of the inner side of the synchronous chain belt is rotationally arranged on the assembly cutter barrel, and a strip-shaped adjusting groove for lifting adjustment of the pressing shaft and the tensioning shaft is arranged on the assembly cutter barrel; the assembly cutter barrel has a positioning end and a bent end, a flexible bending part is arranged between the bent end and the positioning end, a bending linkage rod acting on the bending part is arranged in the assembly cutter barrel, and one end of the bending linkage rod away from the bending part extends into the inner cavity of the assembly handle and is rotationally positioned through the bending adjustment gear arranged on the outer wall of the assembly handle.

[0014] In the nose base of skull endoscope with tip angle adjustable ultrasonic power cutter head, the rotating type adjustment assembly includes a connecting sleeve arranged at the front end of the assembly handle, one end of the connecting sleeve is provided with a threaded connection cylinder, a rotating adjustment knob is threadedly connected at one end of the threaded connection cylinder, an insertion connection channel is arranged on the inner side of the axis of the rotating adjustment knob, and the assembly cutter barrel is connected in the insertion connection channel and synchronously linked with the rotating adjustment knob.

[0015] In the nose base of the skull endoscope with the tip angle-adjustable ultrasonic power cutter head, the cutter barrel is arranged in the wide diameter end of the one end of the plug-in connection channel and the other end is the thin diameter end, the thin diameter end is provided with a limiting adjustment seat in the circumferential direction, the limiting adjustment seat is provided with a limiting rubber close to the one end of the rotating adjustment knob, and the limiting rubber and the rotating adjustment knob form a rotating adjustment gap.

[0016] Compared with the prior art, the advantages of the utility model lie in: high adjustability, the cutter barrel can be adjusted to stretch and retract according to the actual demand in the surgical process to control the exposed length of the ultrasonic cutter head and the movable cutter head structure, reduce the contact area with the wound, secondly, the double gear linkage control structure can effectively ensure the linkage effect of the movable cutter head structure, even if one of the synchronous chains is broken, the driving adjustment can still be realized, and the steel wire can be used to adjust the bending of the rotating adjustment part at the end of the movable cutter head structure, and the bending angle of the bent end can be adjusted, which can adapt to diversified surgical scenes, has rich functions, good adjustment flexibility, good use effect and the like. BRIEF DESCRIPTION OF DRAWINGS

[0017] Figure 1 It is the overall structure schematic diagram of the utility model;

[0018] Figure 2 It is the end face structure schematic diagram of the cutter barrel in the utility model;

[0019] Figure 3 It is the double gear linkage control structure schematic diagram in the utility model;

[0020] Figure 4 It is the movable cutter head structure schematic diagram in the utility model;

[0021] Figure 5 It is the structure schematic diagram of the rotating adjustment part after bending in the utility model;

[0022] Figure 6 It is the internal structure schematic diagram of the transparent connecting cover plate in the utility model;

[0023] Figure 7 It is the structure schematic diagram of the rotating type adjusting assembly in the utility model;

[0024] In the figure: assembly handle 1, elastic pressing handle 11, assembly knife barrel 12, lighting lamp group 121, annular suction layer 122, suction pipe 123, switch push button 124, strip-shaped accommodation gap 125, rotating movable limiting slot hole 126, elastic extrusion buffer area 127, positioning end 128, bending end 129, ultrasonic knife head 13, double gear linkage control structure 2, linkage crossbar 21, linkage gear 22, linkage seat 23, rear linkage rod 24, linkage rear gear 25, synchronous gear 26, synchronous chain belt 27, compression shaft 271, tensioning shaft 272, strip-shaped adjusting groove 273, linkage front gear 28, front linkage rod 29, movable knife head structure 3, plug-in knife seat 31, plug-in barrel body 32, positioning through slot 33, movable knife head 34, rotating adjusting part 341, elastic connecting part 342, elastic reset member 343, steel wire 344, tensioning adjusting knob 345, positioning protruding part 35, top pressing spring 36, positioning bin 37, rotating type adjusting assembly 4, connecting sleeve 41, threaded connecting barrel 42, rotating adjusting knob 43, plug-in connection channel 44, limiting adjusting seat 45, limiting rubber 46, rotating adjusting gap 47, transparent connecting cover plate 5, annular induction part 51, induction module 52, clamping force display lamp group 53, linkage induction part 54, flexible bending part 6, bending linkage rod 61, bending adjusting gear 62. DETAILED DESCRIPTION

[0025] The utility model will be made further detailed explanation in combination with the drawings and specific embodiment.

[0026] As Figures 1-7 shown, a nose skull base endoscope is used sharp end angle adjustable ultrasonic power knife head, including assembly handle 1, the one end of assembly handle 1 is equipped with elastic pressing handle 11 and another end is connected with assembly knife barrel 12, the one end of assembly knife barrel 12 is equipped with ultrasonic knife head 13, and ultrasonic knife head 13 is connected with transducer arranged in assembly handle 1, and transducer connects host computer to obtain power, and assembly knife barrel 12 is equipped with double gear linkage control structure 2, and the one end of double gear linkage control structure 2 is linked with elastic pressing handle 11 and another end is connected with movable knife head structure 3 corresponding with ultrasonic knife head 13, and rotating type adjusting assembly 4 for adjusting the telescopic length of assembly knife barrel 12 to control the exposed length of ultrasonic knife head 13 and movable knife head structure 3 is arranged between assembly handle 1 and assembly knife barrel 12, and the diameter specification of assembly knife barrel 12 can be set to 3MM.

[0027] Among them, the front end of assembly knife barrel 12 is equipped with the lighting lamp group 121 that is annularly arranged, and the annular suction layer 122 is arranged on the circumferential outside of lighting lamp group 121, a plurality of suction pipes 123 are circumferentially distributed on annular suction layer 122, lighting lamp group 121 and suction pipe 123 are controlled by host computer, and switch push button 124 for starting and stopping lighting lamp group 121 and suction pipe 123 is respectively arranged on assembly handle 1.

[0028] The suction pipe 123 is connected to an external suction device for suctioning excess blood from the wound and providing a visual space for the operation, and the illumination lamp set 121 is used in cooperation with the endoscope to improve the visibility.

[0029] As can be seen, the front end of the assembly knife barrel 12 is provided with a strip-shaped gap 125 for the ultrasonic knife head 13 to pass through, and the lower side of the strip-shaped gap 125 is provided with a rotating and movable limiting slot hole 126 for limiting the movable knife head structure 3, and the rotating and movable slot hole and the strip-shaped gap 125 have an elastic extrusion buffer area 127 therebetween.

[0030] The elastic extrusion buffer area 127 provides the closing elasticity of the knife edge, which facilitates the enhancement of the cutting force.

[0031] Obviously, the double-gear linkage control structure 2 includes a linkage cross rod 21 arranged in the assembly handle 1, the linkage cross rod 21 is provided with a linkage gear 22 in the middle, and the linkage cross rod 21 is connected with the elastic pressing handle 11 through a linkage seat 23, the front end of the linkage cross rod 21 is provided with a rear linkage rod 24, and the rear linkage rod 24 is provided with linkage rear gears 25 at both ends, respectively, and the linkage rear gears 25 are provided with synchronous gears 26 that are meshed with the linkage gear 22, and the linkage rear gears 25 are connected with a linkage front gear 28 located at the end of the assembly knife barrel 12 away from the assembly handle 1 through a synchronous chain belt 27, and the linkage front gear 28 is connected through a front linkage rod 29 that is rotatably installed on the inner side of the assembly knife barrel 12.

[0032] The linkage seat 23 drives the linkage cross rod 21 to rotate through the pressing of the elastic pressing handle 11, so as to drive the synchronous gear 26 to rotate through the linkage gear 22, when the synchronous gear 26 rotates, the linkage rear gear 25 drives the rear linkage rod 24 to rotate synchronously, and then drives the linkage front gear 28 to rotate through the synchronous chain belt 27, so as to realize the swinging of the movable knife head structure 3 through the front linkage rod 29.

[0033] Further, the movable knife head structure 3 includes a plug-in knife seat 31 connected with the front linkage rod 29, the end of the plug-in knife seat 31 away from the front linkage rod 29 is provided with a plug-in barrel body 32, a plurality of positioning through grooves 33 are arranged on the plug-in barrel body 32 in the circumferential direction, a movable knife head 34 is detachably connected in the plug-in barrel body 32, a plurality of positioning protrusions 35 corresponding to the positioning through grooves 33 are arranged on the one end of the movable knife head 34 in the circumferential direction, a pressing spring 36 is arranged at the bottom of the positioning protrusion 35, and the end of the pressing spring 36 away from the positioning protrusion 35 acts on the positioning cavity 37 of the movable knife head 34.

[0034] The elastic plug-in arrangement facilitates the plug-in replacement of the movable knife head 34, and the swinging of the movable knife head 34 after installation does not have an impact, and the connection is stable.

[0035] Further, the movable cutter head 34 has a rotation adjusting part 341 at one end, the rotation adjusting part 341 and the movable cutter head 34 have an elastic connecting part 342 therebetween, and the rotation adjusting part 341 and the movable cutter head 34 have an arc-shaped elastic reset part 343 inside the circumference. The rotation adjusting part 341 is connected with a tension adjusting knob 345 arranged on the elastic pressing handle 11 through a steel wire 344.

[0036] The rotation adjusting part 341 and the end of the steel wire 344 are connected through a plug-in buckle, and the elastic stretch part between the bottom of the rotation adjusting part 341 and the movable cutter head 34. When the movable cutter head 34 is replaced, the elastic stretch part is removed, and the hollow installation gap between the rotation adjusting part 341 and the movable cutter head 34 is formed.

[0037] Specifically, the elastic pressing handle 11 has a transparent connecting cover plate 5 arranged on the outer wall and rotationally positioned with the linkage cross bar 21. The transparent connecting cover plate 5 has a ring-shaped sensing part 51 arranged on the outer side of the circumference, a plurality of sensing modules 52 arranged on the circumference of the ring-shaped sensing part 51, and a plurality of clamping force display lamp groups 53 arranged on the circumference of the ring-shaped sensing part 51 and corresponding to the sensing modules 52. The linkage cross bar 21 has a linkage sensing part 54 arranged on the end and capable of rotating synchronously with the linkage cross bar 21 and corresponding to the sensing modules 52. The sensing modules 52, the sensing lamp groups, and the main machine are connected.

[0038] When the elastic pressing handle 11 is pressed and rotated, the linkage sensing part 54 rotates synchronously, constantly changes the position, and interacts with the corresponding sensing modules 52 to realize the opening and closing of the corresponding sensing lamp groups, so as to judge the occlusion degree of the movable cutter head 34 according to the opening and closing of the sensing lamp groups.

[0039] In detail, the assembly cutter barrel 12 has a pressing shaft 271 rotationally arranged on the upper end face of the outer side of the synchronous chain belt 27, a tensioning shaft 272 rotationally arranged on the lower end face of the inner side of the synchronous chain belt 27, and a strip-shaped adjusting groove 273 arranged on the assembly cutter barrel 12 and capable of lifting adjusting the pressing shaft 271 and the tensioning shaft 272. The assembly cutter barrel 12 has a positioning end 128 and a bent end 129, and the bent end 129 and the positioning end 128 have a flexible bending part 6 therebetween. The assembly cutter barrel 12 has a bending linkage rod 61 arranged inside and acting on the bending part. The bending linkage rod 61 extends to the inner cavity of the assembly handle 1 at one end away from the bending part and is linkage-positioned through a bending adjusting gear 62 arranged on the outer wall of the assembly handle 1.

[0040] The bending adjusting gear 62 can pull the bending linkage rod 61 to make the bending end 129 linkage-synchronously, so as to adjust the bending angle and adapt to more angle adjustment requirements.

[0041] More specifically, the rotating adjustment assembly 4 comprises a connecting sleeve 41 arranged at the front end of the assembly handle 1, the connecting sleeve 41 is provided with a threaded connecting cylinder 42 at one end, and the threaded connecting cylinder 42 is threadedly connected with a rotating adjustment knob 43 at one end, the rotating adjustment knob 43 is provided with a plug-in connecting channel 44 at the inner side in the axial direction, and the assembly knife cylinder 12 is connected in the plug-in connecting channel 44 and synchronously linked with the rotating adjustment knob 43.

[0042] The rotating adjustment knob 43 can drive the assembly knife cylinder 12 to move forward or retreat, so as to control the exposed length of the ultrasonic knife head 13 and the movable knife head 34. The ultrasonic knife head 13 and the movable knife head 34 have a loading margin in the assembly knife cylinder 12.

[0043] In addition, the assembly knife cylinder 12 arranged in the plug-in connecting channel 44 has a wide-diameter end at one end and a thin-diameter end at the other end, the thin-diameter end is provided with a limiting adjustment seat 45 in the circumferential direction, the limiting adjustment seat 45 is provided with a limiting rubber 46 at one end close to the rotating adjustment knob 43, and the limiting rubber 46 and the rotating adjustment knob 43 form a rotating adjustment gap 47 therebetween.

[0044] In summary, the principle of the embodiment is that: during use, the assembly knife cylinder 12 is adjusted by the rotating adjustment knob 43 to control the activity length of the ultrasonic knife head 13 and the movable knife head 34, the opening and closing of the illuminating lamp group 121 and the suction pipe 123 are controlled by the switch push button 124 to adjust the operation field of view, the clamping force of the movable knife head 34 is controlled by the double gear linkage control structure 2, at the same time, the bending angle of the rotating adjustment part 341 is adjusted by the tension adjustment knob 345 to realize different cutting requirements, and during use, the tightness of the synchronous chain belt 27 can be adjusted by the compression shaft 271 and the tensioning shaft 272.

[0045] The specific embodiments described herein are merely illustrative of the spirit of the present application. Those skilled in the art to which the present application belongs can make various modifications or supplements to the described specific embodiments or replace them with similar ways, without deviating from the spirit of the present application or exceeding the scope defined by the appended claims.

[0046] Although the assembly handle 1, the elastic pressing handle 11, the assembly knife cylinder 12, the lighting lamp group 121, the annular suction layer 122, the suction pipe 123, the switch push button 124, the strip-shaped accommodation gap 125, the rotating movable limiting slot hole 126, the elastic extrusion buffer area 127, the positioning end 128, the bent end 129, the ultrasonic knife head 13, the double gear linkage control structure 2, the linkage cross bar 21, the linkage gear 22, the linkage seat 23, the rear linkage rod 24, the rear linkage gear 25, the synchronous gear 26, the synchronous chain belt 27, the compression shaft 271, the tensioning shaft 272, the strip-shaped adjusting groove 273, the front linkage gear 28, the front linkage rod 29, the movable knife head structure 3, the plug-in knife seat 31, the plug-in cylinder body 32, the positioning through slot 33, the movable knife head 34, the rotating adjusting part 341, the elastic connecting part 342, the elastic reset part 343, the steel wire 344, the tensioning adjusting knob 345, the positioning convex part 35, the top pressing spring 36, the positioning bin 37, the rotating adjusting assembly 4, the connecting sleeve 41, the threaded connecting cylinder 42, the rotating adjusting knob 43, the plug-in connecting channel 44, the limiting adjusting seat 45, the limiting rubber 46, the rotating adjusting gap 47, the transparent connecting cover plate 5, the annular induction part 51, the induction module 52, the clamping force display lamp group 53, the linkage induction part 54, the flexible bending part 6, the bending linkage rod 61, the bending adjusting gear 62 and other terms are used more in this article, but the possibility of using other terms is not excluded. Using these terms is only for more conveniently describing and explaining the essence of the utility model; it is contrary to the spirit of the utility model to explain them as any kind of additional limitation.

Claims

1. An adjustable-angle ultrasonic power blade for nasal skull base endoscopy, comprising an assembly handle (1), wherein one end of the assembly handle (1) is provided with an elastic pressing handle (11) and the other end is connected to an assembly blade cylinder (12), wherein an ultrasonic blade (13) is provided inside the assembly blade cylinder (12), and the ultrasonic blade (13) is connected to a transducer disposed inside the assembly handle (1), and the transducer is connected to a main unit to obtain power, characterized in that, The assembly knife barrel (12) is provided with a double gear linkage control structure (2), one end of the double gear linkage control structure (2) is linked with the elastic pressing handle (11), and the other end is connected with the movable knife head structure (3) which is correspondingly arranged with the ultrasonic knife head (13).

2. The angle-adjustable ultrasonic powered cutting tool with a tip for endoscopic nasopharyngeal surgery according to claim 1, characterized in that, The front end of the assembly knife barrel (12) is provided with a ring-shaped lighting lamp group (121), and the circumferential outer side of the lighting lamp group (121) is provided with a ring-shaped suction layer (122), a plurality of suction pipes (123) are circumferentially distributed on the ring-shaped suction layer (122), the lighting lamp group (121) and the suction pipe (123) are controlled by the main machine, and the assembly handle (1) is respectively provided with a switch push button (124) for starting and stopping the lighting lamp group (121) and the suction pipe (123).

3. The angle-adjustable ultrasonic powered surgical handpiece with a tip for endoscopic nasopharyngeal surgery according to claim 2, characterized in that, The front end of the assembly knife barrel (12) is provided with a strip-shaped gap (125) for the ultrasonic knife head (13) to pass through, the lower side of the strip-shaped gap (125) is provided with a rotating movable limiting slot hole (126) for limiting the movable knife head structure (3), and the rotating movable slot hole and the strip-shaped gap (125) have an elastic extrusion buffer area (127) therebetween.

4. The angle-adjustable ultrasonic powered surgical handpiece with a tip for endoscopic nasopharyngeal surgery according to claim 1, characterized in that, The double gear linkage control structure (2) comprises a linkage cross bar (21) arranged in the assembly handle (1), the linkage cross bar (21) is provided with a linkage gear (22) in the middle, the linkage cross bar (21) is connected with the elastic pressing handle (11) through a linkage seat (23), the front end of the linkage cross bar (21) is provided with a rear linkage rod (24), the rear linkage rod (24) is respectively sleeved with linkage rear gears (25) at both ends, the linkage rear gears (25) are provided with synchronous gears (26) which are meshed with the linkage gear (22) therebetween, the linkage rear gears (25) are connected with linkage front gears (28) located at the end of the assembly knife barrel (12) away from the assembly handle (1) through a synchronous chain belt (27), and the linkage front gears (28) are connected through a front linkage rod (29) which is rotatably installed in the inner side of the assembly knife barrel (12).

5. The angle-adjustable ultrasonic powered surgical handpiece with a tip for endoscopic nasopharyngeal surgery according to claim 4, characterized in that, The movable knife head structure (3) comprises a plug-in knife seat (31) connected with the front linkage rod (29), the end of the plug-in knife seat (31) away from the front linkage rod (29) is provided with a plug-in barrel body (32), a plurality of positioning grooves (33) are circumferentially arranged on the plug-in barrel body (32), the plug-in barrel body (32) is detachably connected with a movable knife head (34), one end of the movable knife head (34) is circumferentially provided with a plurality of positioning protrusions (35) which are correspondingly arranged with the positioning grooves (33), the bottom of the positioning protrusions (35) is provided with a pressing spring (36), and one end of the pressing spring (36) away from the positioning protrusions (35) acts on a positioning cavity (37) of the movable knife head (34).

6. The angle-adjustable ultrasonic powered surgical handpiece with a tip for endoscopic nasopharyngeal surgery according to claim 5, characterized in that, The movable cutter head (34) has a rotating adjusting part (341) at one end, the rotating adjusting part (341) and the movable cutter head (34) are connected by an elastic connecting part (342), and the rotating adjusting part (341) and the circumferential inner side of the movable cutter head (34) are provided with an arc-shaped elastic reset part (343), the rotating adjusting part (341) is connected with a tension adjusting knob (345) arranged on the elastic pressing handle (11) through a steel wire (344).

7. The angle-adjustable ultrasonic powered surgical handpiece with a tip for endoscopic nasopharyngeal surgery according to claim 4, characterized in that, The elastic pressing handle (11) is provided with a transparent connecting cover plate (5) which is rotationally positioned with the linkage cross bar (21), the transparent connecting cover plate (5) is provided with an annular induction part (51) on the circumferential outer side, a plurality of induction modules (52) are arranged on the circumferential side of the annular induction part (51), and a plurality of clamping force display lamp groups (53) are arranged on the circumferential side of the annular induction part (51) corresponding to the induction modules (52), the linkage cross bar (21) is provided with a linkage induction part (54) which can rotate synchronously with the linkage cross bar (21) and is arranged corresponding to the induction modules (52), and the induction modules (52), the induction lamp groups and the main machine are connected.

8. The angle-adjustable ultrasonic powered surgical handpiece with a tip for endoscopic nasopharyngeal surgery according to claim 7, characterized in that, The assembly cutter barrel (12) is rotationally arranged on the radial direction and provided with a pressing shaft (271) acting on the circumferential outer side of the upper end surface of the synchronous chain belt (27), and is rotationally arranged on the radial direction and provided with a tensioning shaft (272) acting on the circumferential inner side of the lower end surface of the synchronous chain belt (27), the assembly cutter barrel (12) is provided with a strip-shaped adjusting groove (273) for lifting adjustment of the pressing shaft (271) and the tensioning shaft (272); the assembly cutter barrel (12) has a positioning end (128) and a bent end (129), the bent end (129) and the positioning end (128) are provided with a flexible bending part (6), and the assembly cutter barrel (12) is provided with a bending linkage rod (61) acting on the bending part, one end of the bending linkage rod (61) extending into the inner cavity of the assembly handle (1) and being linkage positioned by the bending adjusting gear (62) arranged on the outer wall of the assembly handle (1).

9. The angle-adjustable ultrasonic powered surgical handpiece with a tip for endoscopic skull base surgery according to claim 1, characterized in that, The rotating type adjusting assembly (4) comprises a connecting sleeve (41) arranged at the front end of the assembly handle (1), one end of the connecting sleeve (41) is provided with a threaded connecting barrel (42), one end of the threaded connecting barrel (42) is threadedly connected with a rotating adjusting knob (43), the axial inner side of the rotating adjusting knob (43) is provided with a plug-in connection channel (44), and the assembly cutter barrel (12) is connected in the plug-in connection channel (44) and synchronously linkage connected with the rotating adjusting knob (43).

10. The angle-adjustable ultrasonic powered surgical handpiece with a tip for endoscopic nasopharyngeal surgery according to claim 9, characterized in that, One end of the assembly cutter barrel (12) arranged in the plug-in connection channel (44) is a wide diameter end and the other end is a thin diameter end, the thin diameter end is provided with a limiting adjusting seat (45), one end of the limiting adjusting seat (45) close to the rotating adjusting knob (43) is provided with a limiting rubber (46), and the limiting rubber (46) and the rotating adjusting knob (43) form a rotating adjusting gap (47).

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