CN117883147A

CN117883147A - Bone tissue cutting knife system

Info

Publication number: CN117883147A
Application number: CN202410283530.5A
Authority: CN
Inventors: 盛加根; 张长青; ***; 李兵
Original assignee: Shanghai Zhizhong Medical Technology Co ltd
Current assignee: Shanghai Zhizhong Medical Technology Co ltd
Priority date: 2024-03-13
Filing date: 2024-03-13
Publication date: 2024-04-16
Anticipated expiration: 2044-03-13
Also published as: CN117883147B

Abstract

Embodiments of the present invention provide a bone tissue cutting blade system. The bone tissue cutting blade system includes: the grinding head is used for removing partial bone tissue in the femoral head; the power transmission device is used for providing power for the grinding head so as to drive the grinding head to rotate; the image acquisition device comprises a miniature camera and an image processor, wherein the miniature camera is arranged adjacent to the grinding head and used for acquiring real-time image data of partial bone tissue in the femoral head, and the image processor is used for receiving the real-time image data and outputting real-time images of the partial bone tissue in the femoral head. Through the image acquisition device, partial bone tissues can be accurately cut synchronously when pathological tissues are observed, and excessive cutting of normal bone tissues is avoided.

Description

Bone tissue cutting knife system

Technical Field

The invention relates to the technical field of medical instruments, in particular to a bone tissue cutting knife system.

Background

The femoral head necrosis hip-protecting operation requires the excision of necrotic bone tissue inside the femoral head to form a corresponding cavity, thereby preparing for later transplantation or implantation. At present, the cutting mode of necrotic bone tissue in the femoral head mainly comprises cutting by a mobile phone grinding head and observing by an X-ray machine, a doctor repeatedly shoots a film by the X-ray machine to observe the focus position so as to prevent the difference and deviation of cutting actions, and then the necrotic bone tissue is cut by the grinding head clamped by the mobile phone, so that a desired cavity is formed in the femoral head. Because the size of the cavity formed by cutting the inside of the femoral head is small, the cutting can not be performed under the observation of an endoscope at the same time, so that the shooting mode of the X-ray machine becomes a main observation mode.

However, the cutting mode is excessively dependent on X-ray photographing, observing and positioning, needs to be confirmed from multiple angles, only can form plane perspective observation, cannot confirm the focus space position, and unpredictable damage may exist on a human body due to excessive use of the X-ray. In addition, because the image of the focus position cannot be observed in real time, the good bone tissue and the bad bone tissue can be cut simultaneously, the micro part of the necrotic bone tissue cannot be accurately cut, the requirement on an operator is high, and the operation efficiency is poor.

Disclosure of Invention

In order to solve the technical problems in the prior art, the embodiment of the invention provides a bone tissue cutting knife system, which can synchronously and accurately cut necrotic bone tissue when observing pathological tissues, avoid excessive cutting of normal bone tissue and improve operation efficiency.

Embodiments of the present invention provide a bone tissue cutting blade system. The bone tissue cutting blade system includes: the grinding head is used for removing partial bone tissue in the femoral head; the power transmission device is used for providing power for the grinding head so as to drive the grinding head to rotate; the image acquisition device comprises a miniature camera and an image processor, wherein the miniature camera is arranged adjacent to the grinding head and used for acquiring real-time image data of partial bone tissue in the femoral head, and the image processor is used for receiving the real-time image data and outputting real-time images of the partial bone tissue in the femoral head.

According to some embodiments of the invention, the image capture device further comprises an LED light disposed adjacent to the miniature camera.

According to some embodiments of the invention, the image acquisition device further comprises a display screen for displaying the real-time image.

According to some embodiments of the invention, the image acquisition device further comprises a shooting control circuit for shooting and recording the real-time image.

According to some embodiments of the invention, the power transmission device includes a wire rope having a first end connected to the grater and a second end connected to an external cell phone power source.

According to some embodiments of the invention, the wire rope further has an intermediate portion between the first end and the second end.

According to some embodiments of the invention, the first end of the wire rope is sheathed with a protective bend, the intermediate portion is exposed, and the second end is sheathed with a spring tube.

According to some embodiments of the invention, the spring tube comprises a first spring tube and a second spring tube, the first spring tube being adjacent to the intermediate portion of the wire rope, the first spring tube having a diameter that is smaller than a diameter of the second spring tube.

According to some embodiments of the invention, the second spring tube is further sleeved with a heat-shrinkable sleeve.

According to some embodiments of the invention, the protective elbow is made of a metal material, the spring tube is made of a metal material, and the heat-shrinkable sleeve is made of a polymer material.

According to some embodiments of the invention, the first end of the wire rope is provided with a support shaft for supporting the grater.

According to some embodiments of the invention, the second end of the wire rope is provided with a connecting transmission shaft for connecting with the external mobile phone power source.

According to some embodiments of the invention, two ends of the connecting transmission shaft are respectively arranged on the bearings to form a first simply supported beam structure.

According to some embodiments of the invention, the bone tissue cutting blade system further comprises a flow path control device comprising: a first flow path for injecting a fluid to flush the grinding head; a second flow path for injecting a fluid to flush the miniature camera; and a reversing valve connected to the first flow path and the second flow path for switching the flow of the fluid in the first flow path and the second flow path.

According to some embodiments of the invention, the reversing valve includes a valve body coupled to the first and second flow paths and a reversing piston movable within the valve body to switch the flow of the fluid in the first and second flow paths.

According to some embodiments of the invention, the reversing piston is provided with a fluid channel allowing the fluid to circulate.

According to some embodiments of the invention, the reversing valve further comprises a pressing cap for moving the reversing piston.

According to some embodiments of the invention, the reversing valve further comprises a return spring for resetting the reversing piston.

According to some embodiments of the invention, the first flow path is further provided with a three-way fitting for inserting an instrument accessory and a luer fitting in communication with the three-way fitting.

According to some embodiments of the invention, the reversing valve is further provided with a luer for connecting to a syringe.

According to some embodiments of the invention, the bone tissue cutting blade system further comprises a protective sleeve for supporting the grater and the miniature camera.

According to some embodiments of the invention, the bone tissue cutting blade system further comprises a rotation adjustment device comprising: the rotary thumb wheel is sleeved on the protective sleeve; the damping device is sleeved on the protective sleeve; the rotary thumb wheel is used for driving the protection sleeve to rotate around the axis of the protection sleeve, and the damping device is used for limiting the protection sleeve to stop at any angle within the angle range of 360 degrees.

According to some embodiments of the invention, the damping device comprises a damper and a damping sleeve, wherein the damping sleeve is sleeved on the damper.

According to some embodiments of the invention, the damper comprises a rotating part and a fixing part, wherein the rotating part is fixed in the damping sleeve, and the fixing part is sleeved on the rotating part.

According to some embodiments of the invention, the damping sleeve is provided with a limiting protrusion, and the rotation adjusting device further comprises a limiting block, wherein the limiting protrusion is matched with the limiting block and used for limiting the protection sleeve to rotate within an angle range of 360 degrees.

According to some embodiments of the invention, the stop block includes a stop shaft mounted to the housing of the bone tissue cutting blade system and a stop plate intermediate the stop shaft.

According to some embodiments of the invention, the stop block is movable relative to the housing of the bone tissue cutting blade system by a distance equal to the thickness of the stop plate.

According to some embodiments of the invention, the rotary adjusting device further comprises a positioning wave bead, a positioning groove is arranged in the rotary dial wheel, and the positioning wave bead is matched with the positioning groove and used for positioning the rotary dial wheel.

According to some embodiments of the invention, the rotary thumbwheel is connected to the protective sleeve by a first haff block and the damping device is connected to the protective sleeve by a second haff block.

According to some embodiments of the invention, the rotation adjustment device further comprises a second simple beam structure for mounting the protective sleeve to a housing of the bone tissue cutting blade system.

According to some embodiments of the invention, the bone tissue cutting blade system further comprises a telescopic locking device comprising: a trigger structure rotatable to move and lock the wire rope; and a cutter extension structure connected to the trigger structure, the cutter extension structure comprising a sliding shaft and a central shaft mounted within the sliding shaft, the central shaft having a central passage; wherein the steel wire rope passes through the central channel of the central shaft and is fixed to the central shaft, and the steel wire rope can rotate and move to drive the grinding head to rotate and move; the trigger structure can move the steel wire rope to enable the grinding head to be in a retracted state or an extended state, and when the grinding head is in the retracted state, the steel wire rope and the central shaft are fixed; when the grinding head is in an extending state, the central shaft rotates along with the rotation of the steel wire rope, and the steel wire rope can rotate to drive the grinding head to rotate so as to perform cutting operation.

According to some embodiments of the invention, the cutter telescopic structure further comprises a slide bearing for supporting the slide shaft, the slide bearing being fixed to a housing of the bone tissue cutting blade system.

According to some embodiments of the invention, the outer diameter of the central shaft is progressively larger in a direction away from the trigger structure.

According to some embodiments of the invention, two ends of the central shaft are fixed into the sliding shaft through first bearings respectively to form a third simple beam structure.

According to some embodiments of the invention, the cutter extension structure further comprises a reset assembly for resetting the central shaft and the wire rope.

According to some embodiments of the invention, the reduction assembly includes a reduction support block secured to a housing of the bone tissue cutter system and a reduction spring surrounding the wire rope and located between the reduction support block and the sliding shaft.

According to some embodiments of the invention, a synchronous rotating shaft for supporting the steel wire rope is arranged in the reset supporting block.

According to some embodiments of the invention, the synchronous rotating shaft is fixed to the reset supporting block by a second bearing.

According to some embodiments of the invention, the trigger structure comprises a trigger and a rotation axis about which the trigger is rotatable to move and lock the wire rope.

According to some embodiments of the invention, the trigger is connected to the knife retraction structure by a linkage assembly, the trigger and the linkage assembly forming a linkage mechanism.

According to some embodiments of the invention, the sliding shaft is provided with an adapter thrust cap for connecting the connecting rod assembly.

According to some embodiments of the invention, one end of the linkage assembly is connected to the tool extension structure via a first clamp spring and the other end is connected to the trigger structure via a pin.

According to some embodiments of the invention, the trigger is provided with a locking bayonet, and the trigger structure further comprises a locking switch for locking the locking bayonet.

According to some embodiments of the invention, the distance between the pin and the rotation axis is smaller than the distance between the rotation axis and the locking switch.

According to some embodiments of the invention, an angle between the connecting rod assembly and the central shaft is 130 ° -170 ° when the grinding head is in the retracted state; when the grinding head is in an extending state, the connecting rod assembly and the central shaft are positioned in the same horizontal plane.

According to some embodiments of the invention, the diameter of the grater is 3mm-6mm.

The bone tissue cutter system of the embodiment of the invention has the following technical effects:

According to some embodiments of the invention, the bone tissue cutter system comprises: the grinding head is used for removing partial bone tissue in the femoral head; the power transmission device is used for providing power for the grinding head so as to drive the grinding head to rotate; the image acquisition device comprises a miniature camera and an image processor, wherein the miniature camera is arranged adjacent to the grinding head and used for acquiring real-time image data of partial bone tissue in the femoral head, and the image processor is used for receiving the real-time image data and outputting real-time images of the partial bone tissue in the femoral head. Through the image acquisition device, pathological tissues can be observed in a smaller space, the positions of the pathological tissues can be checked and confirmed in 360 degrees, an X-ray machine is not needed to participate in the observation process, and potential radiation hazard is reduced; the method can synchronously cut necrotic bone tissue accurately when observing pathological tissues, and avoid excessive cutting of normal bone tissue; the visual operation greatly improves the operation efficiency and reduces the operation difficulty.

Further, in the power transmission device, the wire rope has a first end and a second end, the first end is connected to the grinding head of the bone tissue cutting knife system, the second end is connected to an external mobile phone power source, and the power transmission device provides power for the grinding head of the bone tissue cutting knife system under the drive of the external mobile phone power source so as to drive the grinding head to rotate. The grinding head is connected with the external mobile phone power source through the steel wire rope, so that flexible connection between the external mobile phone power source and the grinding head is realized, the cost of the bone tissue cutting knife system is reduced, and the output of larger kinetic energy is facilitated.

Further, in the flow path control device, the first flow path is used for injecting a fluid to flush the grinding head, the second flow path is used for injecting a fluid to flush the micro camera, and the reversing valve is connected with the first flow path and the second flow path and used for switching the flow of the fluid in the first flow path and the second flow path. By arranging the reversing valve to switch the flow of fluid in the first flow path and the second flow path, water injection of the two flow paths can be realized by only one injector, so that the grinding head and the miniature camera can be cleaned conveniently.

Further, in the rotation adjustment device, the rotation adjustment device includes: the rotary thumb wheel is sleeved on the protective sleeve of the bone tissue cutting knife system; the damping device is sleeved on the protective sleeve of the bone tissue cutting knife system; the rotary thumb wheel is used for driving the protection sleeve to rotate around the axis of the protection sleeve, and the damping device is used for limiting the protection sleeve to stop at any angle within the angle range of 360 degrees. Through rotatory thumb wheel with damping device can realize that the protection sleeve of installation bistrique is rotatory and is stopped at 360 arbitrary angles within the angle scope, conveniently carries out accurate cutting to the little partial necrosis bone tissue of different positions, has improved operation efficiency.

Further, in the telescopic locking device, the wire rope is movable so that the grinding head is in a retracted state or an extended state, and when the grinding head is in the retracted state, the central shaft and the wire rope are fixed; when the grinding head is in an extending state, the central shaft rotates along with the rotation of the steel wire rope, and the steel wire rope drives the grinding head to rotate so as to perform cutting operation. Through setting up cutter extending structure, can remove the bistrique and be in the state of stretching out when carrying out excision or be in the state of withdrawing when not carrying out excision, avoid the bistrique probably to hinder when not excision and observe the focus position, be favorable to carrying out accurate excision to necrosis bone tissue in the femoral head, greatly improve operation efficiency, reduce the operation degree of difficulty.

Drawings

Other features and advantages of the present invention will be better understood from the following detailed description of alternative embodiments taken in conjunction with the accompanying drawings, in which like reference characters designate the same or similar parts throughout the figures thereof, and wherein:

FIG. 1 shows a schematic structural view of a bone tissue cutter system according to an embodiment of the present invention;

FIG. 2 shows a schematic cross-sectional view of a bone tissue cutter system according to an embodiment of the present invention;

fig. 3 is a schematic view showing the structure of an image pickup device of a bone tissue cutting blade system according to an embodiment of the present invention;

fig. 4 is a schematic view showing a structure of a power transmission device of a bone tissue cutting blade system according to an embodiment of the present invention;

FIG. 5 shows an enlarged schematic view of section A of the power transmission device of the bone tissue cutting blade system of the embodiment shown in FIG. 4;

FIG. 6 shows an enlarged schematic view of a portion B of the power transmission device of the bone tissue cutting blade system of the embodiment shown in FIG. 4;

fig. 7 is a schematic view showing the structure of a flow path control device of a bone tissue cutting blade system according to an embodiment of the present invention;

FIG. 8 shows an enlarged schematic view of section C of the flow path control device of the bone tissue cutting blade system of the embodiment shown in FIG. 7;

FIG. 9 is a schematic view showing the structure of the reversing valve of the flow path control device of the bone tissue cutting blade system of the embodiment shown in FIG. 7 in a first operating state;

FIG. 10 is a schematic view showing the structure of the reversing valve of the flow path control device of the bone tissue cutting blade system of the embodiment shown in FIG. 7 in a second operating state;

Fig. 11 is a schematic view showing the structure of a rotation adjusting device of a bone tissue cutting blade system according to an embodiment of the present invention;

FIG. 12 shows a schematic cross-sectional view of a rotation adjustment device of the bone tissue cutting blade system of the embodiment shown in FIG. 11;

FIGS. 13 and 14 are schematic views showing the construction of a rotation process of the rotation adjusting device of the bone tissue cutting blade system of the embodiment shown in FIG. 11;

FIG. 15 shows a schematic cross-sectional view of a telescopic locking of a bone tissue cutting blade system with a grater in a retracted state, according to an embodiment of the present invention;

FIG. 16 illustrates a schematic cross-sectional view of a telescoping locking device of a bone tissue cutting blade system with a grater in an extended state, according to an embodiment of the present invention;

FIG. 17 shows a schematic front view of the knife retraction structure of the retraction lock of the embodiment illustrated in FIG. 15;

FIG. 18 shows a rear schematic view of the knife retraction structure of the retraction lock of the embodiment illustrated in FIG. 15;

fig. 19 is a schematic view showing the structure of a telescopic locking device of a bone tissue cutting blade system according to an embodiment of the present invention, in which the grinding head is in a retracted state;

fig. 20 shows a schematic structural view of a telescopic locking device of a bone tissue cutting blade system according to an embodiment of the present invention, wherein the grater is in an extended state.

Detailed Description

The making and using of the embodiments are discussed in detail below. It should be understood, however, that the detailed description and the specific examples, while indicating specific ways of making and using the invention, are intended for purposes of illustration only and are not intended to limit the scope of the invention. The structural position of the various components as described, such as the directions of up, down, top, bottom, etc., is not absolute, but rather relative. When the individual components are arranged as shown in the figures, these directional expressions are appropriate, but when the position of the individual components in the figures changes, these directional expressions also change accordingly.

At present, a cutting method for necrotic bone tissue in a femoral head mainly uses a mobile phone to drive a grinding head to rotate at a high speed for grinding and cutting, and simultaneously adopts an X-ray machine to carry out shooting observation, and the shooting observation by the X-ray machine is stopped once for each cutting so as to confirm whether cutting deviation exists.

This excision has the following problems: the X-ray machine is excessively relied on for shooting, observing and positioning, the observation and positioning are required to be confirmed from multiple angles, only plane perspective observation can be formed, and the focus space position cannot be confirmed; the endoscope observation and the grinding head cutting cannot be simultaneously carried out, the endoscope is required to be withdrawn after the observation, and the positions of the cutter and the focus cannot be determined; the excessive use of X-ray machines may have unpredictable injuries to the human body; the requirements on operators are high, and the operation efficiency is poor; the bad bone tissue of the good bone tissue can be cut off at the same time, and the micro part of the necrotic bone tissue can not be cut accurately; and water injection and the like cannot be performed on the focus in the grinding and cutting process.

To this end, embodiments of the present invention provide a bone tissue cutting blade system. The bone tissue cutting blade system includes: the grinding head is used for removing partial bone tissue in the femoral head; the power transmission device is used for providing power for the grinding head so as to drive the grinding head to rotate; the image acquisition device comprises a miniature camera and an image processor, wherein the miniature camera is arranged adjacent to the grinding head and used for acquiring real-time image data of partial bone tissue in the femoral head, and the image processor is used for receiving the real-time image data and outputting real-time images of the partial bone tissue in the femoral head. Through the image acquisition device, the necrotic bone tissue can be accurately cut synchronously when the pathological tissue is observed, and excessive cutting of normal bone tissue is avoided.

The specific structure and function of the telescopic locking device of the bone tissue cutting blade system according to the embodiment of the present invention will be described in detail with reference to the accompanying drawings.

As shown in fig. 1 and 2, the bone tissue cutter system 100 includes a grinding head 10, a power transmission device 20, and an image acquisition device 80. The grater 10 is used to remove a portion of bone tissue, such as necrotic bone tissue, in the femoral head, and the grater 10 has a diameter of 3mm-6mm, such as 5mm. The power transmission device 20 is used for providing power to the grinding head 10 to drive the grinding head 10 to rotate. The image acquisition device 80 includes a miniature camera 81 and an image processor (not shown), the miniature camera 81 is arranged adjacent to the grinding head 10 for acquiring real-time image data of a portion of bone tissue in the femoral head, and the image processor is used for receiving the real-time image data and outputting a real-time image of the portion of bone tissue in the femoral head.

The image processor may include a touch screen, a housing, a control integrated circuit board, an image signal receiving circuit board, a power switch, an image signal input socket, an image processor power socket, a USB socket, an HDMI socket, a power adapter, and the like.

The image processor may further include an LED lamp 82 disposed adjacent to the miniature camera, a display screen (not shown) for displaying the real-time image, and a photographing control circuit for photographing and recording the real-time image.

As shown in fig. 3, the image pickup device 80 includes an image input output and shooting control circuit 83. The image input/output and shooting control circuit 83 comprises a shooting button 831, a shooting switch PCB 832 and a signal transfer PCB 833, and the shooting switch PCB 832 and the signal transfer PCB 833 are connected through a shooting switch signal line 834. One end of the image input/output/photographing control circuit 83 is connected to the micro camera 81 through a signal line 835, and the other end is connected to the image processor through a cable 836. The bone tissue to be observed is irradiated by the LED lamp 82, and the micro camera 81 receives the reflected light signal of the bone tissue and converts it into an electrical signal, which is input to the image processor, and the signal is processed by an operation to form a real-time image of the bone tissue to be observed. The image processor is caused to record an image, such as taking a photograph or recording a video, by controlling the photographing key 831. The image processor may control the brightness of the LED lamp.

The bone tissue cutting knife system combines the grinding head 10 and the micro camera 81, utilizes the micro camera 81 to collect photoelectric signals and converts the photoelectric signals into real-time images through the image processor to observe the focus position, and grinds and cuts necrotic bone tissue through the grinding head 10 so as to achieve the treatment purpose of accurately cutting the necrotic bone tissue.

In some embodiments, the bone tissue cutting blade system 100 further includes a flow path control device 30, a rotation adjustment device 40, a protective sleeve 50 supporting the grater 10 and the micro camera 81, a telescopic locking device 60, a housing 70 for supporting these structures, and the like.

In some embodiments, the grater 10 and the miniature camera 81 are secured to the end of the protective sleeve 50, such as by bonding or other means. The grinding head 10 is disposed obliquely to the horizontal plane, and the micro camera 81 is disposed obliquely to the horizontal plane. For example, the angle between the grinding head 10 and the horizontal plane is 20 ° -30 °, and the angle between the micro camera 81 and the horizontal plane is 20 ° -30 °. For example, the angle between the grinding head 10 and the horizontal plane is 25 °, and the angle between the micro camera 81 and the horizontal plane is 25 °. If the inclination angle is too large, the grinding head 10 is not easy to perform the cutting operation; if the inclination angle is too small, it is not advantageous for the micro camera 81 to completely observe the lesion position.

As shown in fig. 4 to 6, the bone tissue cutter system 100 further includes a power transmission device 20, and the power transmission device 20 includes a wire rope 21. The wire rope 21 has a first end 211, a middle portion 212 and a second end 213, the middle portion 212 being located between the first end 211 and the second end 213, the first end 211 being connected to the grater 10 of the bone tissue cutting tool system 100, the second end 213 being connected to an external power source of the handpiece. The external handpiece power source can be, for example, a pistol drill, which provides power to the grater 10 to drive the grater 10 to rotate and cut necrotic bone tissue in the femoral head.

The grinding head 10 and the external mobile phone power source are connected through the steel wire rope 21, so that flexible connection between the external mobile phone power source and the grinding head 10 is realized, the cost of the bone tissue cutting knife system is reduced, and the output of larger kinetic energy is facilitated.

In some embodiments, the intermediate portion 212 of the wire rope 21 is bare. When the power transmission device 20 is installed in the bone tissue cutter system 100, the intermediate portion 212 of the wire rope 21 is installed to the telescopic locking device 60. By providing the intermediate portion 212 of the wire rope 21 as exposed, the intermediate portion 212 of the wire rope 21 is facilitated to be operated, and the wire rope 21 and thus the grinding head 10 are stretched.

In some embodiments, the first end 211 of the wire rope 21 is sleeved with a protective elbow 231 and the second end 213 is sleeved with a spring tube 232. The protection bend 231 plays a role in supporting and protecting the wire rope 21, and the spring tube 232 also plays a role in supporting and protecting the wire rope 21. Moreover, the spring tube 232 is in line contact with the wire rope 21, which is beneficial to reducing friction between the spring tube 232 and the wire rope 21, thereby reducing loss of power transmission.

In some embodiments, the spring tube 232 includes a first spring tube 2321 and a second spring tube 2322, the first spring tube 2321 being adjacent the intermediate portion 212 of the wire rope 21, the diameter of the first spring tube 2321 being smaller than the diameter of the second spring tube 2322. The first spring tube 2321 is located within the bone tissue cutter system, small in size for ease of assembly, while the second spring tube 2322 is located outside the bone tissue cutter system, large in size for ease of operation.

In other embodiments, the diameter of the first spring tube 2321 and the diameter of the second spring tube 2322 may also be the same.

In some embodiments, a heat shrink 233 is also provided over the second spring tube 2322. By providing the heat shrinkage bush 233 to wrap the second spring tube 2322 and the second end 213 of the wire rope 21, insulation, heat insulation, and the like can be performed. The first spring tube 2321 and the second spring tube 2322 may be connected by a spring tube joint 234 or otherwise.

In some embodiments, the protective elbow 231 is made of a metallic material, such as stainless steel, the spring tube 232 is made of a metallic material, such as stainless steel, and the heat shrink 233 is made of a polymeric material, such as PA 66.

In some embodiments, the first end 211 of the wire rope 21 is provided with a support shaft 22 for supporting the grater 10. The outside of the support shaft 22 is provided with a protrusion 221 for mounting to the protective sleeve 50 of the bone tissue cutting blade system 100, preventing the support shaft 22 from rotating when the grinding head 10 rotates.

In some embodiments, the second end 213 of the cable 21 is provided with a connecting drive shaft 24 for connecting to an external power source for the cell phone. The two ends of the connecting transmission shaft 24 are respectively provided with bearings 241, so that a first simply supported beam structure is formed, and the bearings 241 at the two ends of the connecting transmission shaft 24 restrict the vertical displacement of the connecting transmission shaft 24, but allow the connecting transmission shaft 24 to freely rotate.

In some embodiments, the connecting transmission shaft 24 is provided with a square hole connection port 242 for connecting an external mobile phone power source, a pressing sheet 243 for pressing the wire rope 21, and a tightening screw 244 for tightening the wire rope 21. The connecting transmission shaft 24, the bearing 241, the square hole connection port 242, the pressing piece 243 and the set screw 244 can be arranged in the shell 25, and one end of the shell 25 is also provided with a tail sleeve 251 for installing the steel wire rope 21. The tail sleeve 251 may be made of, for example, PPU material to prevent the wire rope 21 from bending at the opening of the housing 25.

By arranging the external mobile phone power source, the cost of the bone tissue cutting knife system is reduced, and the output of larger kinetic energy is facilitated. The external mobile phone power source and the grinding head 10 are connected through the steel wire rope 21, so that flexible connection between the external mobile phone power source and the grinding head 10 is realized, and power of the external mobile phone power source is transmitted to the grinding head 10 from the external mobile phone power source.

As shown in fig. 7 to 8, the bone tissue cutter system 100 further includes a flow path control device 30. The flow path control device 30 includes a first flow path 31, a second flow path 32, and a reversing valve 33. The first flow path 31 is used for injecting fluid to flush the grinding head 10 of the bone tissue cutter system 100, lubricating and cooling the grinding head 10, and the second flow path 32 is used for injecting fluid to flush the micro camera 81 of the bone tissue cutter system 100, cleaning bone tissue blood and the like sputtered on the micro camera 81, and preventing the field of view of the micro camera 81 from being blocked.

The reversing valve 33 is connected to the first flow path 31 and the second flow path 32 for switching the flow of the fluid in the first flow path 31 and the second flow path 32. The first and second flow paths 31, 32 may be provided by double rows of tubes, and the fluid may be a gas or a liquid, such as water or the like. The miniature camera may be a waterproof camera or the like. The first flow path 31 and the second flow path 32 may be formed of one double-row pipe, or may be formed of a plurality of double-row pipes connected by double pipe joints, which is advantageous for subsequent operations such as packaging and sterilization.

In some embodiments, the reversing valve 33 includes a valve body 331 and a reversing piston 332, the valve body 331 being coupled to the first and second flow paths 31, 32, the reversing piston 332 being movable within the valve body 331 to switch the flow of fluid in the first and second flow paths 31, 32.

By providing the reversing valve 33 to switch the flow of fluid in the first and second flow paths 31, 32, water injection into both flow paths can be achieved with only one syringe to facilitate cleaning of the grater 10 and the miniature camera 81 of the bone tissue cutting tool system 100.

In some embodiments, the reversing piston 332 is provided with a fluid channel 3321 that allows fluid communication. The change valve 33 is switched between the first operating state and the second operating state by moving the change piston 332.

As shown in fig. 9, when the reversing valve 33 is in the first operating state, the fluid passage 3321 of the reversing piston 332 communicates with the first flow path 31, allowing fluid to be injected into the first flow path 31 to flush the grinding head 10, and preventing fluid from being injected into the second flow path 32 to flush the miniature camera 81.

As shown in fig. 10, when the reversing valve 33 is in the second operating state, the fluid passage 3321 of the reversing piston 332 communicates with the second flow path 32, preventing fluid from being injected into the first flow path 31 to flush the grinding head 10, and allowing fluid to be injected into the second flow path 32 to flush the miniature camera 81.

In some embodiments, the reversing valve 33 further includes a pressing cap 333 for moving the reversing piston 332 to facilitate operation of the reversing valve 33. In some embodiments, the reversing valve 33 further includes a return spring 334 for resetting the reversing piston 332 to facilitate resetting the reversing valve 33. A return spring 334 surrounds the reversing piston 332 and is located between the reversing piston 332 and the pressing cap 333.

In a normal state, i.e., when the pressing cap 333 is not pressed, the reversing valve 33 is in the first operating state, and the fluid passage 3321 of the reversing piston 332 communicates with the first flow path 31, allowing fluid to be injected into the first flow path 31 to flush the grinding head 10, and preventing fluid from being injected into the second flow path 32 to flush the micro camera 81.

When the user presses the pressing cap 333, the pressing cap 333 compresses the return spring 334, the reversing piston 332 moves downward, and when the reversing valve 33 is in the second operating state, the fluid passage 3321 of the reversing piston 332 communicates with the second flow path 32, preventing fluid from being injected into the first flow path 31 to flush the grinding head 10, and allowing fluid to be injected into the second flow path 32 to flush the miniature camera 81.

When the cleaning of the micro camera 81 is completed, the user releases the pressing cap 333, and the reversing piston 332 moves upward to the initial position by the return spring 334, so that the reversing valve 33 is restored to the first operating state.

In some embodiments, the reversing valve 33 is also provided with a luer 335 for connecting to a syringe. The syringe is connected to the luer 335, and fluid is injected into the fluid passage 3321 of the reversing piston 332 of the reversing valve 33 and then into the first flow path 31 or the second flow path 32 through the fluid passage 3321 of the reversing piston 332.

In some embodiments, the first flow path 31 is further provided with a tee 34 for insertion of an instrument accessory and a luer 35 in communication with the tee 34. By providing a three-way fitting 34 and luer fitting 35 to access other instrument accessories, other procedures, such as biopsies and sections, etc., may be performed during the cutting process.

In some embodiments, luer 35 includes a luer (female) adapter 351 and a luer (male) cap 352. When the luer (male) closure 352 is capped, it serves as a water flow path to access fluid, and when the luer (male) closure 352 is opened, it can serve as an instrument channel to access other instrument accessories.

In the flow path control device of the bone tissue cutting blade system of the above embodiment, the first flow path is used for injecting a fluid to flush the grinding head, the second flow path is used for injecting a fluid to flush the miniature camera head, and the reversing valve is connected with the first flow path and the second flow path and is used for switching the flow of the fluid in the first flow path and the second flow path. By arranging the reversing valve to switch the flow of fluid in the first flow path and the second flow path, water injection of the two flow paths can be realized by only one injector, so that the grinding head and the miniature camera can be cleaned conveniently.

As shown in fig. 11 to 12, the bone tissue cutting blade system 100 further includes a rotation adjustment device 40. The rotation adjustment means 40 comprises a rotary dial 41 and damping means 42. The rotary thumb wheel 41 is sleeved on the protective sleeve 50 of the bone tissue cutting knife system 100, and the damping device 42 is sleeved on the protective sleeve 50 of the bone tissue cutting knife system. The rotary thumb wheel 41 is used for driving the protection sleeve 50 to rotate around the axis of the protection sleeve 50, and the damping device 42 is used for limiting the protection sleeve 50 to stop at any angle within the 360-degree angle range.

Through the rotary thumb wheel 41 and the damping device 42, the protection sleeve 50 supporting the grinding head 10 and the miniature camera 81 can rotate and stop at any angle within the angle range of 360 degrees, so that the micro necrotic bone tissues at different positions can be conveniently observed and accurately cut, and the operation efficiency is improved.

In some embodiments, the damping device 42 includes a damper 421 and a damping sleeve 422, and the damping sleeve 422 is sleeved on the damper 421. The damper 421 includes a rotation portion 4211 and a fixing portion 4212, the rotation portion 4211 is fixed in the damping sleeve 422, and the fixing portion 4212 is sleeved on the rotation portion 4211.

When the rotation adjustment device 40 is mounted to the bone tissue cutting blade system 100, the fixing portion 4212 of the damper 421 is fixed to the housing 70 of the bone tissue cutting blade system 100. During the rotation of the protection sleeve 50, the rotation portion 4211 of the damper 421 can rotate together with the damper sleeve 422, and the fixing portion 4212 is fixed. By the frictional force between the rotation portion 4211 and the fixing portion 4212, the protection sleeve 50 is prevented from continuing to rotate after rotating to a desired position, and it is possible to ensure that the protection sleeve 50 is stopped at the desired position.

In some embodiments, as shown in fig. 13 and 14, the damping sleeve 422 is provided with a limiting protrusion 4221, and the rotation adjustment device 40 further includes a limiting block 43, where the limiting protrusion 4221 and the limiting block 43 cooperate to limit the rotation of the protection sleeve within the 360 ° angle range.

In some embodiments, the stopper 43 includes a stopper shaft 431 and a stopper plate 432 positioned in the middle of the stopper shaft 431, and the stopper shaft 431 is mounted to the housing 70 of the bone tissue cutting blade system 100, for example, a groove is provided in the housing 70, and the stopper shaft 431 is inserted into the groove. The stop block 43 is movable relative to the housing 70 of the bone tissue cutting blade system 100 by a distance equal to the thickness of the stop plate 432.

In use, the rotation of the protective sleeve 50 within the 360 ° angular range is limited by the cooperation of the stop boss 4221 on the damping sleeve 422 and the stop plate 432 on the stop block 43. However, since the stopper 43 has a certain thickness, the actual rotation angle range of the protection sleeve 50 is less than 360 °. The limiting plate 432 is movably mounted on the housing 70 of the bone tissue cutting blade system 100 through the limiting shaft 431, and the limiting block 43 can be moved with respect to the housing 70 of the bone tissue cutting blade system 100 by a distance equal to the thickness of the limiting plate 432. When the limiting boss 4221 on the damping sleeve 422 rotates to contact the limiting plate 432 on the limiting block 43, the limiting boss 4221 drives the limiting block 43 to move toward the housing 70 of the bone tissue cutting blade system 100 by a distance equal to the thickness of the limiting plate 432, so that the actual rotation angle range of the protection sleeve 50 is equal to 360 °.

In some embodiments, the rotary adjustment device 40 further includes a positioning bead 44, the positioning bead 44 is fixed to the housing 70 of the bone tissue cutter system 100, and a positioning groove 411 is disposed in the rotary dial 41, and the positioning bead 44 and the positioning groove 411 cooperate to position the rotary dial 41.

In some embodiments, rotary thumbwheel 41 is coupled to protective sleeve 50 by a first haff block 412 and damping device 42 is coupled to protective sleeve 50 by a second haff block 423. Specifically, the rotation portion 4211 of the damper 421 and the damper sleeve 422 are connected to the protection sleeve 50 through the second haffling block 423. The first and second haff blocks 412 and 423 include two semicircular haff blocks, respectively, and the rotary dial 41 and the damping device 42 are mounted to the protective sleeve 50 by two semicircular haff block clamping fits.

In some embodiments, the rotation adjustment device 40 further includes a second simply supported beam structure 45 for mounting the protective sleeve 50 to the housing 70 of the bone tissue cutter system 100. The second simply supported beam structure 45 includes a left bearing 451 and a right bearing 452 that are sleeved on the protection sleeve 50, and the left bearing 451 and the right bearing 452 are respectively located at two sides of the damping device 42. The left bearing 451 is also mounted to the protective sleeve 50 by the second haffl block 423.

The second simply supported beam structure 45 is formed by supporting the protection sleeve 50 through the left and right bearings 451 and 452, which restrain the vertical displacement of the protection sleeve 50 but allow the protection sleeve 50 to freely rotate.

In use, the rotary dial 41 of the rotary adjusting device 40 is rotated to drive the protection sleeve 50, the grinding head 10 and the miniature camera 81 to rotate, and the rotary part 4211 of the damper 421 and the damping sleeve 422 are rotated together; when rotated to a desired position, the protection sleeve 50 is prevented from continuing to rotate by friction between the rotation portion 4211 and the fixing portion 4212, and it is possible to ensure that the protection sleeve 50 is stopped at the desired position. By adjusting the positions of the grinding head 10 and the miniature camera 81, the micro part necrotic bone tissue at different positions can be conveniently observed and accurately cut, and the operation efficiency is improved.

As shown in fig. 15 and 16, the bone tissue cutting blade system 100 further includes a telescoping locking device 60. The telescopic locking means 60 comprises a trigger structure 61 and a knife telescopic structure 62. The trigger structure 61 can be rotated to move and lock the wire 21. The knife telescopic structure 62 is connected to the trigger structure 61. The tool retracting structure 62 includes a sliding shaft 621 and a central shaft 622 mounted within the sliding shaft 621. The center shaft 622 has a center passage 6221, and the center passage 6221 extends along the axial direction of the center shaft 622 and penetrates the entire center shaft 622. The center shaft 622 is freely rotatable within the slide shaft 621. The wire rope 21 passes through the central passage 6221 of the central shaft 622 and is fixed to the central shaft 622. One end of the wire 21 is connected to the grater 10 through the cutter extension structure 62 and the other end is secured to the housing 70 of the bone tissue cutting blade system 100 through the trigger structure 61 and connected to an external power source of the handpiece. The power source of the external mobile phone provides power for the steel wire rope 21. The wire 21 can rotate and move to rotate and move the grinding head 10.

Wherein the wire rope 21 is movable such that the grinding head 10 is in a retracted state or an extended state, and the wire rope 21 and the central shaft 622 are fixed when the grinding head 10 is in the retracted state; when the grinding head 10 is in the extended state, the central shaft 622 rotates with the rotation of the wire rope 21, and the wire rope 21 can rotate to drive the grinding head 10 to rotate, so that the cutting operation is performed.

Through setting up cutter extending structure 62, can remove bistrique 10 and be in the state of stretching out when carrying out excision or be in the state of withdrawing when not carrying out excision, avoided bistrique 10 probably to hinder when not excision and observe the focus position, be favorable to carrying out accurate excision to the necrotic bone tissue in the femoral head, greatly improve operation efficiency, reduce the operation degree of difficulty.

In some embodiments, the cutter telescopic structure 62 further comprises a slide bearing 623 for supporting the slide shaft 621, the slide bearing 623 being fixed to the housing 70 of the bone tissue cutter system 100. By providing the slide bearing 623, the forward and backward movement of the slide shaft 621 is facilitated to be supported and guided.

As shown in fig. 17 and 18, in some embodiments, the outer diameter of the central shaft 622 is progressively larger in a direction away from the trigger structure 61, i.e., towards the grinding head 10, facilitating installation of the central shaft 622 into the sliding shaft 621.

In some embodiments, both ends of the central shaft 622 are secured within the sliding shaft 621 by first bearings 6222, respectively. The central shaft 622 and the first bearings 6222 at both ends form a third simply supported beam structure. By mounting both ends of the center shaft 622 to the first bearings 6222, respectively, the first bearings 6222 restrict the vertical displacement of the center shaft 622, but allow the center shaft 622 to freely rotate, thereby allowing the wire rope 21 fixed to the center shaft 622 to rotate. The central shaft 622 may also be secured within the sliding shaft 621 by a second snap spring 6223, and the wire rope 21 may be secured to the central shaft 622 by a set screw 6224.

In some embodiments, the knife retraction structure 62 further includes a reset assembly 624 for resetting the central shaft 622 and the wire 21, facilitating resetting of the central shaft 622 and the wire 21 to a retracted state after the resection is completed.

In some embodiments, the return assembly 624 includes a return support block 6241 and a return spring 6242. The reset support block 624 is secured to the housing 70 of the bone tissue cutter system 100 and the reset spring 6242 surrounds the cable 21 and is positioned between the reset support block 6241 and the sliding shaft 621.

In some embodiments, a synchronous rotating shaft 6243 for supporting the wire rope 21 is provided inside the reset supporting block 6241, and the synchronous rotating shaft 6243 is fixed to the reset supporting block 6241 through a second bearing 6244. When the wire rope 21 and the grinding head 10 are rotated, the synchronous rotation shaft 6243 rotates together, and the reset support 6241 is stationary.

In some embodiments, the trigger structure 61 includes a trigger 611 and a rotation axis 612, the trigger 611 being rotatable about the rotation axis 612 to move the wire rope 21.

In some embodiments, the trigger 611 is connected to the knife retraction structure 62 by a linkage assembly 625, the trigger 611 and linkage assembly 625 forming a linkage mechanism. The linkage assembly 625 includes two links 6251, one on each side of the trigger 611.

In some embodiments, sliding shaft 621 is provided with an adapter thrust cap 6211 for connecting to linkage assembly 625. The thrust of the link assembly 625 is transmitted to the sliding shaft 621 through the adapter thrust cap 6211.

In some embodiments, the linkage assembly 625 is connected at one end to the knife retraction structure 62 by a first clamp spring 6252 and at the other end to the trigger structure 61 by a pin 6253. Specifically, each link 6251 is connected at one end to the adapter thrust cap 6211 of the sliding shaft 621 of the knife retraction mechanism 62 by a first snap spring 6252 and at the other end to the trigger 611 of the trigger mechanism 61 by a pin 6253.

In some embodiments, the trigger 611 is provided with a locking bayonet 6111, and the trigger structure 61 further includes a locking switch 613 for locking the locking bayonet 6111. The trigger 611 is locked by the locking switch 613, and the wire rope 21 is locked.

In some embodiments, the distance between the pin 6253 and the rotational axis 612 is less than the distance between the rotational axis 612 and the locking switch 613. By this arrangement, it is advantageous to rotate the trigger 611 with a small force, move the locking bayonet 6111 of the trigger 611 to the locking switch 613, lock the locking bayonet 6111 by the locking switch 613, and thus the locking wire 21 cannot be moved, so that the grinding head 10 is in an extended state.

As shown in fig. 19 and 20, in some embodiments, the angle α between the linkage assembly 625 and the central shaft 622 is 130 ° -170 ° when the grinding head 10 is in the retracted state. At this time, the grinding head 10 contacts the protection sleeve 50 outside the wire rope or is retracted into the protection sleeve 50, and the grinding head 10 cannot freely rotate. More specifically, the angle α between the centerline of the connecting rod 6251 of the connecting rod assembly 625 and the axis of the central shaft 622 is 130 ° -170 °, e.g., the angle α between the centerline of the connecting rod 6251 of the connecting rod assembly 625 and the axis of the central shaft 622 is 150 °.

In some embodiments, when the grater 10 is in the extended state, the linkage assembly 625 and the central shaft are in the same horizontal plane, at which point the grater 10 is a distance from the protective sleeve 50, and the grater 10 is free to rotate. More specifically, the centerline of the connecting rod 6251 of the connecting rod assembly 625 and the axis of the central shaft 622 are in the same horizontal plane. That is, the angle between the centerline of the connecting rod 6251 of the connecting rod assembly 625 and the axis of the central shaft 622 is 180 °.

Referring to fig. 19 and 20 again, when the trigger 611 of the trigger structure 61 is pressed, the connecting rod 6251 of the connecting rod assembly 625 is driven to rotate, the connecting rod 6251 pushes the switching thrust blanking cover 6211, the sliding shaft 621 and the central shaft 622 to move, so that the steel wire rope 21 is driven to move along the length direction of the central shaft 622, the reset spring 6242 of the reset assembly 624 starts to compress and store energy, when the trigger 611 is pressed down to the maximum working position, the locking switch 613 locks the locking bayonet 6111 of the trigger 611, at this time, the central line of the connecting rod 6251 and the axis of the central shaft 622 are located in the same horizontal plane, the grinding head 10 extends out of the protection sleeve 50 to be at the maximum extending length, and corresponding cutting work can be performed.

When the trigger 611 is pressed again, the locking switch 613 is withdrawn from the locking bayonet 6111 of the locking state release trigger 611, and the sliding shaft 621 drives the central shaft 622, the wire rope 21, the connection thrust cap 6211 and the link rod 6251 to return to the original state under the action of the mechanical energy released by the compression of the return spring 6242, so that the above operation completes the telescopic locking and release of the primary grinding head 10.

The grinding head 10 is arranged with the diameter of 3mm-6mm, which is beneficial to cutting in a narrow space and observing bone tissue images through the micro camera 81; the steel wire rope 21 is adopted to connect an external mobile phone power source with the grinding head 10, and the rotary adjusting device 40 and the telescopic locking device 60 are arranged, so that the vibration influence in the rotary cutting process of the grinding head 10 is reduced, the grinding head 10 and the miniature camera 81 are combined, and the precise cutting of necrotic bone tissues is realized.

According to some embodiments of the invention, the bone tissue cutter system comprises: the grinding head is used for removing partial bone tissue in the femoral head; the power transmission device is used for providing power for the grinding head so as to drive the grinding head to rotate; the image acquisition device comprises a miniature camera and an image processor, wherein the miniature camera is arranged adjacent to the grinding head and used for acquiring real-time image data of partial bone tissue in the femoral head, and the image processor is used for receiving the real-time image data and outputting real-time images of the partial bone tissue in the femoral head. Through the image acquisition device, the pathological bone tissue can be observed in a smaller space, the position of the pathological bone tissue can be checked and confirmed at 360 degrees, the participation of an X-ray machine is not needed in the observation process, and the potential radiation hazard is reduced; the method can synchronously cut necrotic bone tissue accurately when observing pathological bone tissue, and avoid excessive cutting of normal bone tissue; the visual operation greatly improves the operation efficiency and reduces the operation difficulty.

While the foregoing has described the technical content and features of the present invention, it will be appreciated that those skilled in the art, upon attaining the teachings of the present invention, may make variations and improvements to the concepts disclosed herein, which fall within the scope of the present invention. The above description of embodiments is illustrative and not restrictive, and the scope of the invention is defined by the claims.

Claims

1. A bone tissue cutting blade system, comprising:

The grinding head is used for removing partial bone tissue in the femoral head;

The power transmission device is used for providing power for the grinding head so as to drive the grinding head to rotate;

the image acquisition device comprises a miniature camera and an image processor, wherein the miniature camera is arranged adjacent to the grinding head and is used for acquiring real-time image data of partial bone tissue in the femoral head, and the image processor is used for receiving the real-time image data and outputting real-time images of the partial bone tissue in the femoral head; and

The protection sleeve is used for supporting the grinding head and the miniature camera;

Wherein, the bone tissue cutting knife system further includes a rotation adjustment device, the rotation adjustment device includes:

The rotary thumb wheel is sleeved on the protective sleeve; and

The damping device is sleeved on the protective sleeve;

The rotary thumb wheel is used for driving the protection sleeve to rotate around the axis of the protection sleeve, and the damping device is used for limiting the protection sleeve to stop at any angle within the angle range of 360 degrees.

2. The bone tissue cutting blade system of claim 1 wherein the image acquisition device further comprises an LED light disposed adjacent the miniature camera.

3. The bone tissue cutting blade system of claim 1 wherein the image acquisition device further comprises a display screen for displaying the real-time image.

4. The bone tissue cutting blade system of claim 1 wherein the image acquisition device further comprises a capture control circuit for capturing and video of the real-time images.

5. The bone tissue cutting blade system of any one of claims 1-4, wherein the power transmission device comprises a wire rope having a first end connected to the grater and a second end connected to an external handpiece power source.

6. The bone tissue cutting blade system of claim 5 wherein the wire rope further has an intermediate portion between the first end and the second end.

7. The bone tissue cutting blade system of claim 6 wherein the first end of the wire rope is sheathed with a protective elbow, the intermediate portion is exposed, and the second end is sheathed with a spring tube.

8. The bone tissue cutting blade system of claim 7, wherein the spring tube comprises a first spring tube and a second spring tube, the first spring tube being adjacent the intermediate portion of the wire rope, the first spring tube having a diameter that is less than a diameter of the second spring tube.

9. The bone tissue cutting blade system of claim 8 wherein the second spring tube is further sheathed with a heat shrink.

10. The bone tissue cutting blade system of claim 9 wherein the protective elbow is made of a metallic material, the spring tube is made of a metallic material, and the heat shrink is made of a polymeric material.

11. The bone tissue cutting blade system of claim 5 wherein the first end of the wire rope is provided with a support shaft for supporting the grater.

12. The bone tissue cutting blade system of claim 5 wherein the second end of the wire rope is provided with a connecting drive shaft for connecting to the external handpiece power source.

13. The bone tissue cutting blade system of claim 12 wherein the two ends of the connecting drive shaft are each disposed on a bearing to form a first simply supported beam structure.

14. The bone tissue cutting blade system of any one of claims 1 to 4, further comprising a flow path control device comprising:

A first flow path for injecting a fluid to flush the grinding head;

a second flow path for injecting a fluid to flush the miniature camera; and

And the reversing valve is connected with the first flow path and the second flow path and is used for switching the flow of the fluid in the first flow path and the second flow path.

15. The bone tissue cutting blade system of claim 14 wherein the reversing valve includes a valve body coupled to the first and second flow paths and a reversing piston movable within the valve body to switch the flow of fluid in the first and second flow paths.

16. The bone tissue cutting blade system of claim 15 wherein the reversing piston is provided with a fluid passage allowing the fluid to circulate.

17. The bone tissue cutting blade system of claim 15 wherein the reversing valve further comprises a pressing cap for moving the reversing piston.

18. The bone tissue cutting blade system of claim 15 wherein the reversing valve further comprises a return spring for resetting the reversing piston.

19. The bone tissue cutting blade system of claim 15 wherein the first flow path is further provided with a tee for insertion of an instrument accessory and a luer in communication with the tee.

20. The bone tissue cutting blade system of claim 15 wherein the reversing valve is further provided with a luer for connection to a syringe.

21. The bone tissue cutting blade system of claim 1 wherein the damping device comprises a damper and a damping sleeve, the damping sleeve being over the damper.

22. The bone tissue cutting blade system of claim 21 wherein the damper comprises a rotating portion and a fixed portion, the rotating portion being secured within the damping sleeve, the fixed portion being sleeved over the rotating portion.

23. The bone tissue cutting blade system of claim 22 wherein the damping sleeve has a stop tab thereon, the rotation adjustment device further comprising a stop block, the stop tab and stop block cooperating to limit rotation of the protective sleeve through a 360 ° angular range.

24. The bone tissue cutting blade system of claim 23 wherein the stop block comprises a stop shaft and a stop plate intermediate the stop shaft, the stop shaft being mounted to the housing of the bone tissue cutting blade system.

25. The bone tissue cutting blade system of claim 24 wherein the stop block is movable relative to the housing of the bone tissue cutting blade system a distance equal to the thickness of the stop plate.

26. The bone tissue cutting blade system of claim 1, wherein the rotational adjustment device further comprises a positioning bead, wherein a positioning groove is provided in the rotary dial wheel, and wherein the positioning bead and the positioning groove cooperate to position the rotary dial wheel.

27. The bone tissue cutting blade system of claim 1 wherein the rotary dial wheel is connected to the protective sleeve by a first haffling block and the damping device is connected to the protective sleeve by a second haffling block.

28. The bone tissue cutting blade system of claim 1 wherein the rotational adjustment device further comprises a second simply supported beam structure for mounting the protective sleeve to a housing of the bone tissue cutting blade system.

29. The bone tissue cutting blade system of claim 5, further comprising a telescoping locking device comprising:

A trigger structure rotatable to move and lock the wire rope; and

A cutter extension structure connected to the trigger structure, the cutter extension structure comprising a sliding shaft and a central shaft mounted within the sliding shaft, the central shaft having a central passage;

wherein the steel wire rope passes through the central channel of the central shaft and is fixed to the central shaft, and the steel wire rope can rotate and move to drive the grinding head to rotate and move;

The trigger structure can move the steel wire rope to enable the grinding head to be in a retracted state or an extended state, and when the grinding head is in the retracted state, the steel wire rope and the central shaft are fixed; when the grinding head is in an extending state, the central shaft rotates along with the rotation of the steel wire rope, and the steel wire rope can rotate to drive the grinding head to rotate so as to perform cutting operation.

30. The bone tissue cutting blade system of claim 29 wherein the blade telescoping structure further comprises a slide bearing for supporting the slide shaft, the slide bearing being secured to a housing of the bone tissue cutting blade system.

31. The bone tissue cutting blade system of claim 29 wherein the outer diameter of the central shaft increases progressively in a direction away from the trigger structure.

32. The bone tissue cutting blade system of claim 29 wherein the central shaft is secured at both ends to the sliding shaft by first bearings, respectively, forming a third simple beam structure.

33. The bone tissue cutting blade system of claim 29 wherein the blade extension structure further comprises a reset assembly for resetting the central shaft and the wire rope.

34. The bone tissue cutting blade system of claim 33 wherein the reset assembly includes a reset support block secured to the housing of the bone tissue cutting blade system and a reset spring surrounding the wire and positioned between the reset support block and the sliding shaft.

35. The bone tissue cutting blade system of claim 34 wherein the reset support block has a synchronous rotation shaft disposed therein for supporting the wire rope.

36. The bone tissue cutting blade system of claim 35 wherein the synchronized rotating shaft is secured to the reduction support block by a second bearing.

37. The bone tissue cutting blade system of claim 29 wherein the trigger structure comprises a trigger and a rotational axis, the trigger being rotatable about the rotational axis to move and lock the wire.

38. The bone tissue cutting blade system of claim 37 wherein the trigger is connected to the blade extension structure by a linkage assembly, the trigger and linkage assembly forming a linkage mechanism.

39. The bone tissue cutting blade system of claim 38 wherein the sliding shaft is provided with an adapter thrust cap for connecting the linkage assembly.

40. The bone tissue cutting blade system of claim 38 wherein one end of the linkage assembly is connected to the blade extension structure by a first clamp spring and the other end is connected to the trigger structure by a pin.

41. The bone tissue cutting blade system of claim 40 wherein the trigger is provided with a locking bayonet and the trigger structure further comprises a locking switch for locking the locking bayonet.

42. The bone tissue cutting blade system of claim 41 wherein the distance between the pin and the rotational shaft is less than the distance between the rotational shaft and the locking switch.

43. The bone tissue cutting blade system of claim 38 wherein the included angle between the linkage assembly and the central shaft is 130 ° -170 when the grater is in the retracted state; when the grinding head is in an extending state, the connecting rod assembly and the central shaft are positioned in the same horizontal plane.

44. The bone tissue cutting blade system of any one of claims 1 to 4 wherein the grater has a diameter of 3mm-6mm.