CN116269662B

CN116269662B - Surgical tool

Info

Publication number: CN116269662B
Application number: CN202310540990.7A
Authority: CN
Inventors: 请求不公布姓名; 李盛龙; 王健
Original assignee: Hangzhou Rejoin Mastin Medical Device Co ltd
Current assignee: Hangzhou Rejoin Mastin Medical Device Co ltd
Priority date: 2023-05-15
Filing date: 2023-05-15
Publication date: 2023-08-04
Anticipated expiration: 2043-05-15
Also published as: CN116269662A

Abstract

The application relates to a surgical tool, which comprises an outer rod, a planer tool component and a drill bit component, wherein a chip removing shell is arranged at the distal end of the outer rod; the planing tool assembly is at least partially arranged in the chip removal shell and the outer rod; the planing tool assembly comprises a first rod piece and a planing tool, the planing tool is arranged at the far end of the first rod piece, and the near end of the first rod piece is used for driving the planing tool to rotate under the rotation action of external force; the drill bit assembly comprises a drill bit which is arranged at the far end of the planing tool and rotates along with the planing tool. According to the invention, the functions of drilling and positioning of the drill bit and cleaning of soft tissues by the planer tool can be realized through the same surgical tool, and in the surgical process, the operation of the surgical field is always kept without influence of disordered soft tissues in the drilling and positioning process without taking out and putting in different instruments, so that a doctor can conveniently and rapidly and accurately perform the surgical steps, the surgical complexity is effectively reduced, and the surgical efficiency is improved.

Description

Surgical tool

Technical Field

The invention relates to the technical field of medical instruments, in particular to a surgical tool.

Background

In the micro fracture operation, a planer tool, a cartilage cone drill bit and the like are required to be used for cleaning soft tissues and positioning drilling holes respectively; during operation, the two instruments need to be taken out and put into the patient to be cooperatively used, so that a good operation environment and an operation visual field are kept to the greatest extent, but the whole operation is complicated, time and labor are wasted, and the operation efficiency is low.

Disclosure of Invention

Based on this, it is necessary to provide a surgical tool.

A surgical tool, comprising:

the far end of the outer rod is provided with a chip removal shell;

the planing tool assembly is at least partially arranged in the chip removal shell and the outer rod; the planing tool assembly comprises a first rod piece and a planing tool, the planing tool is arranged at the far end of the first rod body, and the near end of the first rod piece is used for driving the planing tool to rotate under the rotation action of external force; and

the drill bit assembly comprises a drill bit, wherein the drill bit is arranged at the far end of the planing tool assembly and rotates along with the planing tool assembly.

So set up, can realize drill bit drilling location and planer tool clearance soft tissue's function simultaneously through same operation instrument, in the operation in-process, need not to take out back and forth and put into different apparatuses and just can remain the drilling always and fix a position the time operation area not have disordered soft tissue influence operation, the doctor of being convenient for carries out operation step fast accurately, effectively reduces the operation loaded down with trivial details degree, improves operation efficiency.

In one embodiment of the invention, the drill bit assembly further comprises a telescoping mechanism coupled to the drill bit; the telescopic mechanism enables the drill bit to extend out of or retract into the plane cutter.

The drill bit is arranged in the plane cutter in a telescopic way through the telescopic mechanism, and when the drill bit extends out of the plane cutter, the drilling function of the drill bit can be guaranteed; when the drill bit is retracted into the planer tool, the drill bit can be prevented from accidentally injuring bone tissue without operation or other soft tissues which do not influence operation when the planer tool cleans soft tissues close to the bone tissue accessory, and further unnecessary damage to a patient is avoided.

In one embodiment of the present invention, the telescopic mechanism is rotatably and slidably disposed in the first rod member; the telescopic mechanism comprises a second rod piece and a driven piece which are sequentially linked, a first driving matching part is arranged on the second rod piece, a second driving matching part is arranged on the inner peripheral wall of the first rod piece, the driven piece is rotatably and slidably sleeved on the second rod piece, and a third driving matching part matched with the first driving matching part and the second driving matching part is arranged on the driven piece;

the drill bit is arranged at the distal end of the second rod piece, the proximal end of the second rod piece is used for sliding towards the distal end of the surgical tool under the pushing action of external force, and then the driven piece is pushed to slide and rotate under the matching action of the first driving matching part, the second driving matching part and the third driving matching part, so that the drill bit extends out of the plane cutter and keeps extending out, or is retracted into the plane cutter and keeps retracted into the plane cutter.

By means of the arrangement, the drill bit can be extended out of the plane cutter and kept extended out, or retracted into the plane cutter and kept retracted through the cooperation of the second rod, the first rod and the driven piece in a mode of applying external force to the second rod.

In one embodiment of the present invention, the telescopic mechanism further includes a first elastic member, and the first elastic member abuts against the second rod.

The setting can make the second member can automatic re-set through the elastic action of first elastic component, and then can control the flexible switching of drill bit through the mode of bulldozing the second member repeatedly.

In one embodiment of the present invention, the surgical tool further includes a handle and an adjusting mechanism, the handle is connected to the outer rod, a second installation through hole is axially formed in the handle, and a first side groove communicating with the second installation through hole is radially formed in the handle; the telescopic mechanism is provided with a first matching part, and the first matching part is positioned in the second mounting through hole;

the adjusting mechanism comprises a first driving piece which can extend into the first side groove to be matched with the first matching part so as to drive the telescopic mechanism to move towards the far end close to the surgical tool under the action of external force.

So set up, can remove through the more convenient control second member of cooperation of adjustment mechanism's first driving piece and first cooperation portion to the flexible for the planer tool of quick control drill bit.

In one embodiment of the present invention, the first engaging portion is a first engaging tooth, and the first driving member includes a first adjusting lever and a first adjusting gear disposed on the first adjusting lever;

under the condition that the first adjusting gear is meshed with the first matching teeth, the first adjusting rod is rotated, and the first adjusting gear can be matched with the first matching teeth to drive the telescopic mechanism to move towards the direction close to the drill bit.

So set up, can drive telescopic machanism's removal through rotating first regulation pole and tooth complex mode, be convenient for doctor's operation.

In one embodiment of the present invention, the adjusting mechanism further includes a second elastic member, and the second elastic member is installed in the first side groove and acts with the first adjusting lever;

the adjusting mechanism is provided with an avoidance state and a matching state which can be mutually switched;

in the avoidance state, the second elastic piece elastically acts on the first adjusting rod to enable the first adjusting gear and the first matching teeth to be separated from each other;

Under the cooperation state, the first adjusting rod compresses the second elastic piece under the pressing of external force, so that the first adjusting gear can be meshed with the first cooperation teeth.

The first adjusting gear is arranged on the first adjusting rod, and the first elastic piece is arranged on the first adjusting rod; under the matched state, the first adjusting gear and the first matched teeth are meshed with each other in a mode of pressing and rotating the first adjusting rod, so that the telescopic mechanism is driven to slide under the rotating action, further, the telescopic movement of the drill bit relative to the planing tool can be realized through the transmission action, and the condition that the drill bit can retract into or extend out of the planing tool and the chip removing shell is ensured; after the external force is removed, under the elastic action of the second elastic piece, the first adjusting gear and the first matching teeth can be mutually separated, so that the adjusting mechanism is switched from the matching state to the avoiding state again.

In one embodiment of the present invention, an end of the outer rod near the chip shell has a bending section, and the first rod is a rigid elastic member.

So set up, the section of buckling of outer pole can dodge partial bone tissue or soft tissue, makes drill bit and planer tool can more easily reach required position, and the operation of being convenient for, first member be the rigid elastic component can guarantee under the condition that has the section of buckling, and first member still can drive the planer tool and rotate in outer pole.

In one embodiment of the present invention, the surgical tool further includes a driving connection member, the driving connection member includes a connection end and a driving end, the connection end is connected to the chip removing shell, and the driving end is capable of moving under a pushing and pulling action of an external force, so as to adjust a rotation angle of the planing tool and the drill bit relative to the outer rod in a pitching direction through the chip removing shell.

So set up, can adjust the chip shell for the rotation angle of outer pole in pitch direction through drive connection spare, also can also be through the cooperation of drive connection spare and chip shell indirect adjustment drill bit and the pitch angle of planer tool, make drill bit and planer tool adapt to more service scenes, the conversion of multi-angle also avoids the operation to prepare many planer tools or cartilage awl drill bits of different angles, practices thrift the cost.

In one embodiment of the present invention, the surgical tool further comprises a handle and an adjusting and fixing mechanism, wherein the handle is connected to the outer rod, and the adjusting and fixing mechanism is mounted on the handle and/or the outer rod and is used for adjusting and fixing the moving distance of the driving end.

So set up, can be through adjusting the mutually supporting of fixed establishment, drive connecting piece and chip removal shell, adjust drill bit and planer tool and fix in required operating angle, guarantee operation effect and operation security.

Drawings

In order to more clearly illustrate the technical solutions of embodiments or conventional techniques of the present application, the drawings that are required to be used in the description of the embodiments or conventional techniques will be briefly described below, and it is apparent that the drawings in the following description are only some embodiments of the present application, and other drawings may be obtained according to these drawings without inventive effort for a person of ordinary skill in the art.

FIG. 1 is a schematic view of a surgical tool according to a first embodiment of the present invention;

FIG. 2 is an enlarged schematic view of the structure shown at A in FIG. 1;

FIG. 3 is a schematic view of a portion of the surgical tool of FIG. 1;

FIG. 4 is an enlarged schematic view of the structure shown at B in FIG. 3;

FIG. 5 is a schematic view of a portion of the surgical tool of FIG. 1;

FIG. 6 is an enlarged schematic view of FIG. 5C;

FIG. 7 is an enlarged schematic view of the structure of FIG. 5 at D;

FIG. 8 is a schematic view of a portion of the surgical tool of FIG. 1;

FIG. 9 is an enlarged schematic view of the structure of FIG. 8 at E;

FIG. 10 is an enlarged schematic view of the structure shown at F in FIG. 8;

FIG. 11 is a schematic view of a portion of the surgical tool of FIG. 1;

FIG. 12 is an enlarged schematic view of the structure at G in FIG. 11;

FIG. 13 is a schematic cross-sectional view of a portion of the surgical tool of FIG. 1;

Fig. 14 is an enlarged schematic view of the structure at H in fig. 13;

FIG. 15 is a schematic view of a portion of the first lever of the surgical tool of FIG. 1;

FIG. 16 is a schematic view showing a part of the structure of the second rod member according to the first embodiment of the present invention;

FIG. 17 is a schematic view of the follower in the first embodiment of the invention;

FIG. 18 is a schematic side elevational view of the surgical tool of FIG. 1;

FIG. 19 is a schematic cross-sectional view of the surgical tool of FIG. 18 with X-X as a cross-sectional line;

FIG. 20 is an enlarged schematic view of the structure shown at J in FIG. 19;

FIG. 21 is a schematic cross-sectional view of the surgical tool of FIG. 18 with Y-Y as a cut line;

FIG. 22 is an enlarged schematic view of the structure shown at K in FIG. 21;

FIG. 23 is a schematic view of the surgical tool of FIG. 1 from another perspective;

FIG. 24 is a schematic view of the handle of FIG. 1;

FIG. 25 is a schematic view of the handle of FIG. 24 from another perspective;

FIG. 26 is a schematic view of a surgical tool according to a second embodiment of the present invention;

FIG. 27 is a schematic view of a portion of the surgical tool of FIG. 26;

FIG. 28 is a schematic view of a portion of the surgical tool of FIG. 27;

fig. 29 is an enlarged schematic view of the structure at W in fig. 28;

FIG. 30 is a schematic view showing the structure of a drill bit according to a second embodiment of the present invention;

FIG. 31 is a schematic view of a follower according to a second embodiment of the present invention;

fig. 32 is a schematic view showing the structure of a planing tool according to a second embodiment of the present invention.

Reference numerals: 100. a surgical tool; 10. an operating assembly; 11. a handle; 111. a second mounting through hole; 112. a first side groove; 113. a second side groove; 1131. limit flat groove; 114. extending the slideway; 115. an alignment mark; 12. an outer rod; 121. a sliding groove; 122. bending sections; 13. chip removal shell; 131. a protective sheet; 20. a planing tool assembly; 21. a planing tool; 211. a first mounting through hole; 22. a first rod member; 221. a limit step; 222. a cylindrical portion; 223. a half cylinder portion; 224. a first guide groove; 225. a second guide groove; 226. limit teeth; 30. a drill bit assembly; 31. a drill bit; 32. a telescoping mechanism; 321. a second rod member; 3211. a first mating tooth; 301. a first drive mating portion; 3011. a transmission protrusion; 3012. guiding saw teeth; 3013. a guide block; 322. a follower; 3221. cam teeth; 323. a first elastic member; 40. an adjusting mechanism; 41. a first driving member; 411. a first adjusting lever; 412. a first adjusting gear; 42. a second elastic member; 43. a force application part; 50. a drive connection; 51. a connection end; 52. a driving end; 53. a second mating tooth; 60. adjusting the fixing mechanism; 61. a second adjusting lever; 62. a flat limit block; 63. a second adjusting gear; 64. a third elastic member; 65. a screwing part; 651. identification information.

Detailed Description

In order that the above objects, features and advantages of the invention will be readily understood, a more particular description of the invention will be rendered by reference to the appended drawings. In the following description, numerous specific details are set forth in order to provide a thorough understanding of the present invention. The present invention may be embodied in many other forms than described herein and similarly modified by those skilled in the art without departing from the spirit of the invention, whereby the invention is not limited to the specific embodiments disclosed below.

In the description of the present invention, it should be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", "axial", "radial", "circumferential", etc. indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings are merely for convenience in describing the present invention and simplifying the description, and do not indicate or imply that the device or element being referred to must have a specific orientation, be configured and operated in a specific orientation, and therefore should not be construed as limiting the present invention.

Furthermore, the terms "first," "second," and the like, are used for descriptive purposes only and are not to be construed as indicating or implying a relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defining "a first" or "a second" may explicitly or implicitly include at least one such feature. In the description of the present invention, the meaning of "plurality" means at least two, for example, two, three, etc., unless specifically defined otherwise.

In the present invention, unless explicitly specified and limited otherwise, the terms "mounted," "connected," "secured," and the like are to be construed broadly, and may be, for example, fixedly connected, detachably connected, or integrally formed; can be mechanically or electrically connected; either directly or indirectly, through intermediaries, or both, may be in communication with each other or in interaction with each other, unless expressly defined otherwise. The specific meaning of the above terms in the present invention can be understood by those of ordinary skill in the art according to the specific circumstances.

In the present invention, unless expressly stated or limited otherwise, a first feature "up" or "down" a second feature may be the first and second features in direct contact, or the first and second features in indirect contact via an intervening medium. Moreover, a first feature being "above," "over" and "on" a second feature may be a first feature being directly above or obliquely above the second feature, or simply indicating that the first feature is level higher than the second feature. The first feature being "under", "below" and "beneath" the second feature may be the first feature being directly under or obliquely below the second feature, or simply indicating that the first feature is less level than the second feature.

It will be understood that when an element is referred to as being "fixed" or "disposed" on another element, it can be directly on the other element or intervening elements may also be present. When an element is referred to as being "connected" to another element, it can be directly connected to the other element or intervening elements may also be present. The terms "vertical," "horizontal," "upper," "lower," "left," "right," and the like are used herein for illustrative purposes only and are not meant to be the only embodiment.

Because the functions, movement modes, control modes and applicable operation scenes of different functional pieces are different, the execution end of the existing operation tool is generally provided with only one functional piece for use, and the functional pieces comprise, but are not limited to, drills, plane blades, clamps, graspers and the like, but in the operation process, a plurality of operation tools provided with different functional pieces are generally required to work cooperatively, so that a plurality of instruments need to be replaced repeatedly. For example, in microfracture surgery, it is necessary to use a planer tool, a cartilage cone drill bit, etc. to clean soft tissue and drill holes simultaneously; during operation, the two instruments need to be taken out and put into the patient to be cooperatively used, so that a good operation environment and an operation visual field are kept to the greatest extent, but the whole operation is complicated, time and labor are wasted, and the operation efficiency is low.

Referring to fig. 1, fig. 1 is a schematic structural view of a surgical tool 100 according to a first embodiment of the present invention; based on this, the present application provides a surgical tool 100, which surgical tool 100 is used in the medical technical field, in particular in the field of microfracture surgery; it is to be understood that the surgical tool 100 is applicable to subjects including, but not limited to, related bone surgery of humans, animals.

Referring again to fig. 1, and referring also to fig. 2-25, the surgical tool 100 provided herein includes:

an outer rod 12, wherein a chip removal shell 13 is arranged at the distal end of the outer rod 12;

a planing tool assembly 20 at least partially mounted within the chip removal housing 13 and the outer shank 12; the planer tool assembly 20 comprises a first rod member 22 and a planer tool 21, wherein the planer tool 21 is arranged at the distal end of the first rod member 22, and the proximal end of the first rod member 22 is used for driving the planer tool 21 to rotate under the rotation action of external force; and

the drill bit assembly 30, including the drill bit 31, is disposed at the distal end of the planer tool assembly 20 for rotation with the planer tool assembly 20. So set up, this application can realize drill bit 31 drilling location and planer tool 21 clearance soft tissue's function simultaneously through same surgical tool 100, in the operation in-process, need not to take out back and forth and put into different apparatuses and just can remain the drilling location time operation area not have disordered soft tissue influence operation all the time, and the doctor of being convenient for carries out the operation step fast accurately, effectively reduces the operation loaded down with trivial details degree, improves operation efficiency.

In other words, the surgical tool 100 provided by the application can give consideration to the functions of the planer tool 21 and the drill 31, the planer tool assembly 20 can clean chips generated in the drilling area and soft tissues affecting the operation at any time during the drilling and positioning of the drill 31 before and after the drilling and positioning of the drill 31, and the surgical instrument is not required to be repeatedly taken out and put into the patient in the process, so that the injury degree to the patient is effectively reduced, and the surgical efficiency and the surgical quality are improved.

In the present invention, the distal end refers to an end close to the surgical site of the patient, and the proximal end refers to an end far from the surgical site of the patient; in other words, the distal end is relatively close to the patient and the proximal end is relatively close to the physician.

Further, the drill 31 is used for drilling and positioning at a position where bone tissue is required to be operated, and the planer tool 21 and the chip discharging shell 13 are matched with each other to clean soft tissue of an operation area affecting operation. Soft tissues that affect the surgical procedure include soft tissues that adhere to bone tissue and soft tissues that float around bone tissue.

It will be appreciated that the rotation of the planing tool 21 means that the planing tool 21 can rotate in its own axial direction. Rotation of the drill bit 31 with the planer tool assembly 20 means that the drill bit 31 is capable of rotating with the planer tool 21 in its own axial direction.

Referring to fig. 1 and 24 again, it should be noted that in this embodiment, the surgical tool 100 further includes a handle 11, the handle 11 is axially provided with a second mounting hole 111, and a portion of the outer rod 12 extends into the second mounting hole 111 to be connected to the handle 11. The outer rod 12 and the handle 11 together form the operating assembly 10 of the surgical tool 100. The end of the outer rod 12, which is relatively far from the handle 11, is an execution end of the surgical tool 100, and is used for connecting a functional element and extending into a position of a patient to be operated, and the handle 11 is used for holding by a doctor and is convenient for the doctor to control the adjustment and the use of the surgical tool 100.

Referring again to fig. 1 and 2-17, further, the drill bit assembly 30 further includes a telescoping mechanism 32 coupled to the drill bit 31; the telescopic mechanism 32 allows the drill bit 31 to extend or retract into the plane blade 21.

So arranged, the drill bit 31 is retractably installed in the plane blade 21 through the retraction mechanism 32, and when the drill bit 31 extends out of the plane blade 21, the drilling function of the drill bit 31 can be ensured; when the drill 31 is retracted into the planer tool 21, it is possible to avoid the drill 31 from accidentally injuring bone tissue which does not need surgery or other soft tissues which do not affect surgery operation when the planer tool 21 cleans soft tissues near the bone tissue, thereby avoiding unnecessary damage to the patient.

Referring again to fig. 13 and 14, in one embodiment of the present invention, the first rod 22 is a hollow sleeve, the planer tool 21 is axially provided with a first mounting through hole 211, and the first mounting through hole 211 axially penetrates the planer tool 21 and communicates with the hollow sleeve, and the telescopic mechanism 32 is rotatably and slidably mounted in the first rod 22. The telescopic mechanism 32 has a first holding state in which the telescopic mechanism 32 is capable of extending the drill bit 31 out of the first mounting through hole 211 by sliding and holding the extension; in the second holding state, the telescopic mechanism 32 is capable of retracting the drill 31 into the first mounting through hole 211 by sliding and holding the retraction.

In this way, the telescopic mechanism 32 can control the expansion and the holding of the drill bit 31 by sliding, and at the same time can also rotate together with the drill bit 31 within the first rod 22 so as not to affect the rotation of the drill bit 31 in a state where the drill bit 31 remains extended or remains retracted.

It will be appreciated that in the first holding state, the drill 31 may extend completely out of the first mounting through hole 211 or may partially extend out of the first mounting through hole 211, so long as the length of the drill 31 extending out of the first mounting through hole 211 is ensured to perform an effective drilling positioning function.

It will further be appreciated that in the second holding state, the drill 31 may be fully retracted into the first mounting through hole 211 or may be partially retracted into the first mounting through hole 211, as long as the portion remaining outside the first mounting through hole 211 does not cause adverse effects in the surgical environment.

In the present application, the specific sizes and types of the drill 31 and the planer tool 21 are not limited, as long as the drill 31 to be used can be correspondingly mounted in the first mounting through hole 211 of the planer tool 21, and the functions to be exerted by the planer tool 21 and the drill 31 are not affected.

Referring to fig. 1 and fig. 13 to fig. 17 again, in one embodiment of the present invention, the telescopic mechanism 32 includes a second rod 321 and a driven member 322 that are sequentially linked, a first driving matching portion 301 is disposed on the second rod 321, a second driving matching portion is disposed on an inner peripheral wall of the first rod 22, the driven member 322 is rotatably and slidably sleeved on the second rod 321, and a third driving matching portion that is matched with the first driving matching portion 301 and the second driving matching portion is disposed on the driven member 322;

the distal end of the second rod 321 is provided with a drill bit 31, and the proximal end of the second rod 321 is used for sliding towards the distal end of the surgical tool 100 under the pushing action of an external force, so that the driven piece 322 is pushed to slide and rotate by the cooperation of the first driving cooperation part 301, the second driving cooperation part and the third driving cooperation part, and the drill bit 31 extends out of the plane blade 21 and keeps extending out, or is retracted into the plane blade 21 and keeps retracting.

So configured, the drill bit 31 can be extended out of the plane blade 21 and kept extended or retracted into the plane blade 21 and kept retracted by the cooperation of the second lever 321, the first lever 22 and the follower 322 by applying an external force to the second lever 321.

Referring to fig. 13 to 17 again, in one embodiment of the present invention, the telescopic mechanism 32 further includes a first elastic member 323, and the first elastic member 323 is elastically abutted against the second rod 321. In this way, the second rod 321 can be automatically reset by the elastic action of the first elastic member 323, and the expansion and contraction switching of the drill bit 31 can be controlled by repeatedly pressing the second rod 321, that is, the expansion and contraction mechanism 32 can be controlled to be rapidly switched between the first holding state and the second holding state by repeatedly applying force to the second rod 321.

For example, referring to fig. 1 to 17 again, in one embodiment, the first driving engagement portion 301 includes guide serrations 3012 and guide blocks 3013 disposed on the second rod 321, the tips of the guide serrations 3012 face the follower 322, and the third driving engagement portion is a cam tooth 3221 disposed at the distal end of the follower 322; the second driving matching part comprises a first guide groove 224 and a second guide groove 225 which are arranged on the inner peripheral wall of the first rod piece 22, the first guide groove 224 and the second guide groove 225 axially extend, and the distal end of the second guide groove 225 is provided with a limiting tooth 226;

Further, the first driving matching portion 301 further includes a transmission protrusion 3011 protruding from an outer peripheral wall of the second rod 321, the second driving matching portion further includes a limiting step 221 protruding from an inner peripheral wall of the first rod 22, the first elastic member 323 is sleeved on the second rod 321, and two ends of the first elastic member 323 are respectively abutted to the limiting step 221 and the transmission protrusion 3011.

Specifically, when the drill bit 31 needs to be controlled to extend out of the plane cutter 21, an external force can be applied to the second rod 321 to enable the second rod 321 to move towards the distal end of the surgical tool 100, at this time, the transmission protrusion 3011 compresses the first elastic member 323, the guide block 3013 slides in the first guide groove 224 and the second guide groove 225, and the guide saw teeth 3012 squeeze the cam teeth 3221, so that the cam teeth 3221 can be rotationally clamped between the guide saw teeth 3012 after being separated from the first guide groove 224; after the external force is removed, the second rod 321 moves towards the proximal end of the surgical tool 100 under the elastic action of the first elastic member 323, and at this time, the cam teeth 3221 of the follower 322 can be disengaged from the guide saw teeth 3012 and clamped in the limit teeth 226 at the distal end of the second guide groove 225 after the second rod 321 is reset, so that the drill bit 31 extends out of the first mounting through hole 211 and remains extended.

Further, external force is repeatedly applied to the second rod 321, and the cam teeth 3221 of the follower 322 can slide off the limiting teeth 226 and are rotationally clamped between the guide sawteeth 3012; after the external force is removed, the second rod 321 is moved toward the proximal end of the surgical tool 100 by the first elastic member 323, and the cam teeth 3221 can enter the first guide groove 224, so that the drill 31 is retracted into the first mounting through hole 211 and kept retracted.

So set up, can be through the mode of bulldozing second member 321 repeatedly, switch the drill bit 31 from the state of stretching out first installation through hole 211 to the state of retracting into first installation through hole 211, avoid in planer tool 21 clearance soft tissue in-process, drill bit 31 causes the accidental injury to other bone tissue and soft tissue that need not the operation. This mode is simple and quick, can control the telescopic movement of the drill bit 31 with respect to the plane blade 21 quickly, and can rotate in the axial direction of the drill bit 31 and the plane blade 21 without being affected.

It can be appreciated that the opening depths of the first guide groove 224 and the second guide groove 225 have a preset difference value, so as to ensure that the cam teeth 3221 of the follower 322 can be clamped with the limiting teeth 226 after sliding and rotating.

Referring to fig. 13 to 17 again, it should be noted that in the present embodiment, the number of the first guide grooves 224 and the second guide grooves 225 are equal. The positions and the number of the guide blocks 3013 are in one-to-one correspondence with the total number and positions of the first guide grooves 224 and the second guide grooves 225; the number of cam teeth 3221 of the follower 322 is equal to the number of first guide grooves 224, and the cam teeth 3221 are capable of sliding into the first guide grooves 224.

Illustratively, in the present embodiment, the number of the first guide grooves 224 and the second guide grooves 225 is four, and the guide blocks 3013 are provided in one-to-one correspondence with the positions of the first guide grooves 224 and the second guide grooves 225; the cam teeth 3221 on the follower 322 are provided with four. It will be appreciated that in other embodiments, the corresponding number may be set according to the actual situation, as long as the function of the telescopic mechanism 32 is not affected.

Referring to fig. 1 to 17 again and also referring to fig. 19 to 25, further, in order to facilitate the application of force to the telescopic mechanism 32, in this embodiment, the surgical tool 100 further includes an adjusting mechanism 40, and the handle 11 is axially provided with a second mounting through hole 111 and a first side slot 112 radially provided to communicate with the second mounting through hole 111; the telescopic mechanism 32 is provided with a first mating portion located in the second mounting through hole 111;

the adjustment mechanism 40 includes a first driver 41 that can extend into the first side slot 112 to engage the first engagement portion to drive the telescopic mechanism 32 under external force toward the distal end of the surgical tool 100.

By such arrangement, the second rod 321 can be controlled to move more conveniently by the cooperation of the first driving member 41 and the first cooperation portion of the adjusting mechanism 40, so as to quickly control the extension and retraction of the drill bit 31 relative to the planer 21.

In other words, the second lever 321 can be controlled to move more conveniently by the adjusting mechanism 40 to rapidly switch the state of the telescopic mechanism 32, so that the telescopic mechanism 32 is switched between the first holding state and the second holding state. Further, the drill 31 can be quickly moved to expand and contract in the first mounting through hole 211, and can be kept contracted in the first mounting through hole 211 or kept in a state of extending out of the first mounting through hole 211 and the chip removing shell 13, so that different functions of the surgical tool 100 can be selectively exerted, and a better surgical effect can be realized.

It will be appreciated that the second rod 321 may also be driven toward the distal end of the surgical tool 100 by depressing the proximal end of the second rod 321 without affecting the rotation of the driver bit 31 and the plane blade 21.

In one embodiment of the present invention, the first engaging portion is a first engaging tooth 3211, and the first driving member 41 includes a first adjusting lever 411 and a first adjusting gear 412 disposed on the first adjusting lever 411;

when the first adjusting gear 412 is engaged with the first mating tooth 3211, the first adjusting lever 411 is rotated, and the first adjusting gear 412 can cooperate with the first mating tooth 3211 to drive the telescopic mechanism 32 to move in a direction approaching the drill bit 31.

So set up, can drive the removal of telescopic machanism 32 through rotation first regulation pole 411 and tooth complex mode, be convenient for doctor's operation.

It will be appreciated that in other embodiments, the second rod 321 may be moved by other engaging means.

Referring to fig. 1, 5 and 6 again, further, the first rod 22 includes a cylindrical portion 222 and a half cylindrical portion 223, the half cylindrical portion 223 is located at the proximal end of the first rod 22, and the portion of the second rod 321 provided with the first mating teeth 3211 is located at the half cylindrical portion 223. So configured, the first engagement teeth 3211 can be exposed, ensuring that the first adjustment gear 412 is able to engage with the first engagement teeth 3211.

In one embodiment of the present invention, the adjusting mechanism 40 further includes a second elastic member 42, where the second elastic member 42 is installed in the first side slot 112 and acts with the first adjusting lever 411; the adjusting mechanism 40 has a avoidance state and a mating state that can be switched to each other;

in the avoidance state, the second elastic member 42 elastically acts on the first adjustment lever 411 to separate the first adjustment gear 412 and the first engagement tooth 3211 from each other;

in the engaged state, the first adjustment lever 411 compresses the second elastic member 42 under the pressing of the external force, so that the first adjustment gear 412 can be engaged with the first engagement teeth 3211.

In this way, in the avoidance state, the second elastic member 42 can elastically act on the first adjusting rod 411 to separate the first adjusting gear 412 from the first mating teeth 3211, so as to avoid the first adjusting gear 412 from interfering with the rotation of the telescopic mechanism 32 and the drill bit 31; in the matched state, the first adjusting gear 412 and the first matching teeth 3211 can be meshed with each other by pressing and rotating the first adjusting rod 411, so that the telescopic mechanism 32 is driven to slide under the rotation action, and further the telescopic movement of the drill bit 31 relative to the planer tool 21 can be realized through the transmission action, so that the drill bit 31 can be ensured to be kept in a retracted state or a state of extending out of the planer tool 21 and the chip removal shell 13; after the external force is removed, the first adjusting gear 412 and the first engaging tooth 3211 can be separated from each other under the elastic action of the second elastic member 42, so that the adjusting mechanism 40 is switched from the engaged state to the retracted state again.

Referring to fig. 1, fig. 6 and fig. 14 again, further, in the present embodiment, the adjusting mechanism 40 further includes a force applying portion 43, the force applying portion 43 is mounted on a side of the first adjusting lever 411 relatively far from the second elastic member 42, the force applying portion 43 is located outside the first side slot 112, and the force applying portion 43 is used for providing a force applying position so as to press and screw the first adjusting lever 411.

When the first adjustment lever 411 is not pressed by the pressing force of the pressing portion 43, the first adjustment gear 412 on the first adjustment lever 411 is separated from the first engagement teeth 3211 by the abutting action of the second elastic member 42; after the force application part 43 is pressed and the second elastic member 42 is compressed to enable the first adjusting rod 411 to move a preset distance towards the bottom wall of the first side groove 112, the teeth of the first adjusting gear 412 can be meshed with the first matching teeth 3211, the force application part 43 is rotated, the first adjusting rod 411 drives the first adjusting gear 412 to rotate, and when the first adjusting gear 412 and the first matching teeth 3211 are matched with each other, the second rod 321 moves towards the direction close to the drill bit 31, so that the drill bit 31 stretches out of or retracts into the plane 21.

Referring to fig. 23 again, further, an alignment mark 115 is further disposed on a side of the handle 11 opposite to the outer sleeve, and when the alignment mark 115 is aligned on a plane where the axial notch of the half-cylinder 223 is located, the first adjusting lever 411 is pressed, and the first adjusting gear 412 can be meshed with the first mating teeth 3211.

Thus, when the first rod 22 is rotated, the plane where the axial notch of the half cylinder 223 is located aligns with the alignment mark 115, it can be ensured that the axial notch of the half cylinder 223 faces upwards, the first mating teeth 3211 can be exposed, and after the first adjusting lever 411 is pressed, the first adjusting gear 412 can not be stopped by the first rod 22, and smoothly moves to the bottom wall of the first side slot 112 and is meshed with the first mating teeth 3211.

Referring to fig. 1, in one embodiment of the present invention, the end of the outer rod 12 adjacent to the chip shell 13 has a bent section 122, and the first rod 22 is a rigid elastic member.

So set up, the bending section 122 of outer pole 12 can be convenient for the doctor to adjust the partial tissue structure of dodging the operation area, makes drill bit 31 and planer tool 21 can more easily reach required position, and the convenient operation, and first member 22 is the rigid elastic component can guarantee under the condition that has bending section 122, and first member 22 still can drive planer tool 21 rotation in outer pole 12.

It will be appreciated that in this embodiment, the second rod 321 is also a rigid elastic member to avoid affecting the rotation of the drill bit 31 and the planing tool 21. It will be appreciated that the material of the rigid elastic member has a certain ability to recover after bending or deformation, so as to ensure that the drill bit 31 and the planing tool 21 can rotate without affecting the control of the expansion and contraction of the drill bit.

It is understood that the first rod 22 and the second rod 321 include, but are not limited to, memory metal members such as nickel-titanium alloy.

Referring again to fig. 1-20, further, in this embodiment, the chip housing 13 is rotatably connected to the outer rod 12. The surgical tool 100 further includes a driving connector 50, where the driving connector 50 includes a connection end 51 and a driving end 52, the connection end 51 is connected to the chip shell 13, and the driving end 52 can move under the push-pull action of an external force, so as to adjust the rotation angle of the planing tool 21 and the drill bit 31 relative to the outer rod 12 in the pitching direction through the chip shell 13.

The arrangement can adjust the rotation angle of the chip removing shell 13 relative to the outer rod 12 in the pitching direction through the driving connecting piece 50, namely can indirectly adjust the pitching angles of the drill bit 31 and the planing tool 21 through the matching of the driving connecting piece 50 and the chip removing shell 13, so that the drill bit 31 and the planing tool 21 are suitable for more use scenes, the conversion of multiple angles also avoids the operation preparation of a plurality of planing tools 21 or cartilage cone drill bits 31 with different angles, and the cost is saved.

Alternatively, in the present embodiment, the drive connection 50 is implemented as an elastic rod. It will be appreciated that in other embodiments, the drive connection 50 may be embodied as a pull cord or as a non-resilient rod, as long as the pulling or pushing action on the chip shell 13 is not affected.

In one embodiment of the present invention, the surgical tool 100 further includes an adjustment and fixation mechanism 60, the adjustment and fixation mechanism 60 being mounted to the handle 11 and/or the outer rod 12 for adjusting and fixing the distance of movement of the driving end 52.

So set up, can be through adjusting the mutually supporting of fixed establishment 60, drive connector 50 and chip shell 13, adjust and fix drill bit 31 and plane sword 21 at required operating angle, guarantee operation effect and operation security.

In other words, the surgical tool 100 further comprises an adjustment fixing mechanism 60, wherein the adjustment fixing mechanism 60 is mounted on the handle 11 and/or the outer rod 12 and is connected to the chip shell 13 for adjusting and fixing the rotation angle of the chip shell 13 relative to the outer rod 12 in the pitch direction. Since the planer tool 21 is installed in the chip removing shell 13 and the drill bit 31 is installed in the planer tool 21, when the chip removing shell 13 rotates, the planer tool 21 and the drill bit 31 can rotate along with the chip removing shell 13, and then the pitching angles of the drill bit 31 and the planer tool 21 can be adjusted.

Referring to fig. 1 to 20 and 24 again, in one embodiment of the present invention, a second side groove 113 connected to the second mounting through hole 111 is further formed on the side of the handle 11, and a limit flat groove 1131 is formed on the inner wall of the second side groove 113; the driving end 52 of the driving connection member 50 protrudes into the second side groove 113 through the second mounting through hole 111, and the second lever 321 is provided with a plurality of second mating teeth 53; the adjusting and fixing mechanism 60 comprises a third elastic member 64 and a second adjusting rod 61 which are matched with each other, the second adjusting rod 61 and the third elastic member 64 are arranged in the second side groove 113, and the third elastic member 64 is abutted against the bottom wall of the second side groove 113 and elastically acts on the second adjusting rod 61; the second adjusting rod 61 is provided with a flat limiting block 62 which is mutually matched with the limiting flat groove 1131 and a second adjusting gear 63 which is mutually meshed with the second matching tooth 53;

The adjustment securing mechanism 60 includes a locked state and an adjustment state;

in the locked state, the flat limiting block 62 is in clamping fit with the limiting flat groove 1131 to limit the rotation of the second adjusting rod 61, so that the rotation angle of the chip shell 13 relative to the outer rod 12 is fixed;

in the adjusting state, the second adjusting rod 61 can move and compress the third elastic piece 64 under the pressing action of external force, so that the flat limiting block 62 is disengaged from the limiting flat groove 1131, and can move the driving connecting piece 50 under the screwing action of external force by matching the second adjusting gear 63 with the second matching tooth 53, so as to adjust the pitching angle of the chip removing shell 13.

So set up, can more conveniently adjust the turned angle of chip shell 13 through pressing and turning handle 11 department's second regulation pole 61's mode, and then adjust the every single move angle of drill bit 31 and planer tool 21, and can withdraw external force and fix drill bit 31 and planer tool 21 at this angle after adjusting to suitable angle for the position and the angle of drill bit 31 and planer tool 21 are difficult for taking place the change in the follow-up use, guarantee operation effect and operation security.

It should be understood that in other embodiments, the first elastic member 323 may not be provided, so long as the second adjusting lever 61 cannot rotate in the locked state, and the second adjusting gear 63 and the second engaging tooth 53 cannot cooperate to drive the driving connection member 50 to move.

Referring to fig. 23, further, the adjusting and fixing mechanism 60 further includes a screwing portion 65, the screwing portion 65 is connected to an end of the second adjusting lever 61 relatively far from the third elastic member 64, the screwing portion 65 is located outside the second side groove 113, and the screwing portion 65 is used for providing a force application position, so that a user can press and rotate the second adjusting lever 61 conveniently.

Referring to fig. 1, 5 and 7 again, in order to facilitate adjustment of the rotation angle of the chip shell 13, the screwing part 65 is provided with identification information 651 for prompting the degree of adjustment. Alternatively, in the present embodiment, the screw portion 65 has a plurality of equally spaced circumferentially protruding boss portions (not numbered), and the identification information 651 is provided on each boss portion, respectively, with a degree difference of 20 degrees between adjacent two boss portions. In other words, the rotational angle of the chip shell 13 with respect to the outer rod 12 in the pitch direction is adjusted by ±20 degrees every one-half turn of the screw portion 65. The direction of the specific degree of adjustment is determined according to the direction of rotation of the screw 65.

For example, in one embodiment of the present application, when the drill bit 31 and the planer tool 21 need to be adjusted to rotate in the pitch direction in a direction approaching to the outer rod 12, the screwing portion 65 is pressed by an external force, the cooperation of the flat limiting block 62 and the limiting flat groove 1131 is released, the screwing portion 65 is rotated in a direction of the proximal end of the handle 11, and the second adjusting gear 63 and the second mating tooth 53 meshed with each other drive the driving connection piece 50 to move in a direction approaching to the proximal end of the handle 11, so as to pull the chip removing shell 13 to rotate, and drive the planer tool 21 in the chip removing shell 13 and the drill bit 31 in the planer tool 21 to synchronously rotate, thereby achieving the purpose of adjusting the rotation angles of the drill bit 31 and the planer tool 21. After the adjustment to a proper angle, the external force is removed, the second adjusting rod 61 moves outside the second side groove 113 under the action of the third elastic member 64, so that the flat limiting block 62 is blocked into the limiting flat groove 1131 again, and the two cooperate to realize locking, so that the second adjusting rod 61 cannot rotate, that is, the pitching angles of the chip removing shell 13, the drill bit 31 and the planing tool 21 are fixed.

Referring to fig. 5 again, optionally, in this embodiment, a sliding groove 121 is formed in the outer peripheral wall of the outer rod 12, the sliding groove 121 extends along the axial direction of the outer rod 12, and a part of the driving connection member 50 is slidably mounted in the sliding groove 121.

So set up, can restrict the second member 321 through sliding tray 121 and remove in axial direction, avoid in adjusting chip shell 13 every single move angular in-process, second member 321 radially rocks, influences chip shell 13 every single move angular regulation precision.

In one embodiment of the present invention, the surgical tool 100 further includes a driving member, which is connected to the first rod 22 and/or one end of the second rod 321 opposite to the end far from the drill 31, for driving the first rod 22 to rotate;

in this embodiment, the outer rod 12 extends into the second mounting hole 111 but does not protrude from the second mounting hole 111, the first rod 22 is at least partially located in the outer rod 12, the second rod 321 is at least partially located in the first rod 22, and both the first rod 22 and the second rod 321 can partially extend out of the outer rod 12 and the second mounting hole 111 to be connected with the driving member.

It can be understood that when the second rod 321 extends out of the first rod 22, the outer rod 12 and the second mounting through hole 111 to connect with the driving member, the first rod 22 and the second rod 321 can be ensured to rotate synchronously, and the guide block 3013 always corresponds to the first guide slot 224 and the second guide slot 225 on the first rod 22, so as to facilitate rapid control of the extension and retraction of the drill bit 31.

It will be appreciated that in other embodiments, the second rod 321 may not protrude from the second mounting hole 111 and be connected to the driving member, the driving member may be connected to the first rod 22, and the first rod 22 directly drives the planer tool 21 to rotate, and the second rod 321 is indirectly driven to rotate by the cooperation of the guide block 3013 and the first guide and second guide grooves 225.

In this embodiment, the adjustment mechanism 40 is located at the proximal end of the surgical tool 100. So configured, the adjustment mechanism 40 can be located on the side of the surgical tool 100 that is adjacent to the surgeon for ease of control by the surgeon.

Alternatively, in one embodiment of the present invention, the planing tool 21 and the drill 31 are connected to the same driving member (not shown) through the first rod 22 and the second rod 321. By the arrangement, the number of driving parts can be reduced, the complexity of the overall structure of the surgical tool 100 is reduced, the surgical tool 100 is convenient to assemble and control, the cost is reduced, and the operation convenience is improved.

It will be appreciated that in other embodiments, the rotation of the drill bit 31 and the planer 21 may be controlled by a plurality of driving members, respectively, while ensuring that the drill bit 31 is capable of telescoping relative to the planer 21.

Referring to fig. 1, 24 and 25 again, in this embodiment, the handle 11 is further provided with an extension slideway 114, the extension slideway 114 is communicated with the second mounting through hole 111 and the second side slot 113, and the driving end 52 of the driving connector 50 is located in the extension slideway 114. So set up, extend slide 114 cooperation outside slide groove 121 on the pole 12, can guarantee that the second control rod is located the part of handle 11 and can smooth and easy slip in handle 11, and can stabilize second control rod slip direction, be convenient for adjust the pitch angle of fixed establishment 60 regulation chip shell 13.

Surgical tool 100 also includes an aspiration mechanism (not shown) that may be integrated into planer tool assembly 20 for aspirating cleaned soft tissue and bone tissue debris to ensure visual clarity of the surgical field. It will be appreciated that in other embodiments, the suction mechanism may also function independently of the surgical tool 100, i.e., by a separate suction instrument in cooperation with the surgical tool 100 to suction and expel soft tissue debris.

Referring again to fig. 4, in one embodiment of the invention, the proximal end of the chip housing 13 is provided with a shield 131, the shield 131 closing a portion of the distal end of the chip housing 13. The protective sheet 131 can prevent the end surface of the planing tool 21 from wearing bone tissue or soft tissue during the rotation of the planing tool 21.

Referring to fig. 26 to 32, the present invention also provides a second embodiment, which is the same as the first embodiment in most structures and inventive concepts, except that:

the proximal end of the drill bit 31 is provided with a first driving matching portion 301, the telescopic mechanism 32 comprises a driven member 322, the proximal end of the driven member 322 is provided with a second driving matching portion, the inner peripheral wall of the planer tool 21 is provided with a third matching portion, the distal end of the drill bit 31 is used for moving towards the proximal end of the surgical tool 100 under the pushing action of external force, and then the driven member 322 is pushed to slide and rotate under the matching action of the first driving matching portion 301, the second driving matching portion and the third driving matching portion, so that the drill bit 31 extends out of the planer tool 21 and keeps extending out, or is retracted into the planer tool 21 and keeps retracting.

In the present embodiment, the telescopic mechanism 32 includes a first elastic member 323, and the first elastic member 323 abuts against the driven member 322, so as to reset the drill bit 31 through the driven member 322.

Illustratively, in the second embodiment, the first driving engagement portion 301 includes guide serrations 3012 provided at the distal end of the drill bit 31 and guide blocks 3013 provided on the outer peripheral wall of the drill bit 31, the tips of the guide serrations 3012 face the follower 322, and the third driving engagement portion is cam teeth 3221 provided on the follower 322; the second driving matching part comprises a first guide groove 224 and a second guide groove 225 which are arranged on the inner peripheral wall of the planing tool 21, the first guide groove 224 and the second guide groove 225 axially extend, and the proximal end of the second guide groove 225 is provided with a limiting tooth 226; further, a limiting step 221 is further disposed in the first rod 22, and two ends of the first elastic member 323 are respectively abutted to the limiting step 221 and the driven member 322.

Specifically, when it is required to control the drill 31 to extend out of the plane cutter 21, an external force may be applied to the drill 31 to move the drill 31 toward the proximal end of the surgical tool 100, at this time, the drill 31 compresses the first elastic member 323 through the follower 322, the guide block 3013 slides in the first guide groove 224 and the second guide groove 225, and the guide saw teeth 3012 press the cam teeth 3221, so that the cam teeth 3221 can be rotationally clamped between the guide saw teeth 3012 after being separated from the first guide groove 224; after the external force is removed, the drill bit 31 moves toward the proximal end of the surgical tool 100 under the elastic action of the first elastic member 323, and at this time, the cam teeth 3221 of the follower 322 can be disengaged from the guide saw teeth 3012 and engaged with the limit teeth 226 at the distal end of the second guide slot 225 after the drill bit 31 is reset, so that the drill bit 31 extends out of the plane cutter 21 and remains extended.

Further, the external force is repeatedly applied to the drill bit 31, and the cam teeth 3221 of the follower 322 can slide to be separated from the limiting teeth 226, and are rotationally clamped between the guide sawteeth 3012; after the external force is removed, the drill 31 is moved toward the distal end of the surgical tool 100 by the first elastic member 323, and the cam teeth 3221 can enter the first guide groove 224, so that the drill 31 is retracted into the plane blade 21 and kept retracted.

The surgical tool 100 provided by the invention can realize the functions of drilling and positioning and soft tissue cleaning simultaneously through the same surgical tool 100, and can always keep the operation sight of a surgical area free from disordered soft tissue floaters when drilling and positioning without taking out and putting in different instruments back and forth in the surgical process, thereby facilitating a doctor to perform the surgical operation rapidly and accurately, effectively reducing the complexity of the operation, improving the surgical efficiency and reducing the pain degree of a patient.

The technical features of the above-described embodiments may be arbitrarily combined, and all possible combinations of the technical features in the above-described embodiments are not described for brevity of description, however, as long as there is no contradiction between the combinations of the technical features, they should be considered as the scope of the description.

The above examples illustrate only a few embodiments of the invention, which are described in detail and are not to be construed as limiting the scope of the invention. It should be noted that it will be apparent to those skilled in the art that several variations and modifications can be made without departing from the spirit of the invention, which are all within the scope of the invention. Accordingly, the scope of protection of the present invention is to be determined by the appended claims.

Claims

1. A surgical tool, comprising:

the far end of the outer rod is provided with a chip removal shell;

2. The surgical tool of claim 1, wherein the drill bit assembly further comprises a telescoping mechanism coupled to the drill bit; the telescopic mechanism enables the drill bit to extend out of or retract into the plane cutter.

3. The surgical tool of claim 2, wherein the telescoping mechanism is rotatably and slidably disposed within the first rod; the telescopic mechanism comprises a second rod piece and a driven piece which are sequentially linked, a first driving matching part is arranged on the second rod piece, a second driving matching part is arranged on the inner peripheral wall of the first rod piece, the driven piece is rotatably and slidably sleeved on the second rod piece, and a third driving matching part matched with the first driving matching part and the second driving matching part is arranged on the driven piece;

4. A surgical tool as recited in claim 3, wherein the telescoping mechanism further comprises a first resilient member that abuts the second rod.

5. The surgical tool of claim 2, further comprising a handle and an adjustment mechanism, the handle being connected to the outer rod, the handle having a second mounting through hole axially formed therein and a first side slot radially formed therein in communication with the second mounting through hole; the telescopic mechanism is provided with a first matching part, and the first matching part is positioned in the second mounting through hole;

6. The surgical tool of claim 5, wherein the first mating portion is a first mating tooth, and the first driver comprises a first adjustment lever and a first adjustment gear disposed on the first adjustment lever;

and under the condition that the first adjusting gear is meshed with the first matching teeth, the first adjusting rod is rotated, and the first adjusting gear can be matched with the first matching teeth to drive the telescopic mechanism to move towards the far end close to the surgical tool.

7. The surgical tool of claim 6, wherein the adjustment mechanism further comprises a second resilient member mounted in the first side channel and resiliently acting on the first adjustment lever;

8. The surgical tool of claim 1, wherein the outer rod has a bent section at an end thereof adjacent the chip housing, and wherein the first rod is a rigid elastic member.

9. The surgical tool of claim 1, further comprising a drive connection including a connection end and a drive end, the connection end being connected to the chip housing, the drive end being movable under the push-pull action of an external force to adjust the angle of rotation of the planing tool and the drill bit relative to the outer shaft in a pitch direction through the chip housing.

10. A surgical tool as claimed in claim 9, further comprising a handle connected to the outer rod and an adjustment fixing mechanism mounted to the handle and/or the outer rod for adjusting and fixing a moving distance of the driving end.