An ultrasonic bone mill and an ultrasonic bone milling device

Abstract

The utility model relates to an ultrasonic bone grinding knife and ultrasonic bone grinding device, including the knife handle, the knife bar and the knife head that set up in proper order, the knife bar includes the first transmission part, the intermediate transmission part and the second transmission part that set up in proper order, is provided with spiral groove on the intermediate transmission part, and spiral groove is used for converting the axial vibration of first transmission part into the compound motion that second transmission part reciprocating linear motion along its axial and reciprocating rotary motion around its axis, the knife handle sets up on the first transmission part, and the knife head sets up on the second transmission part. The utility model's knife head not only can realize bone grinding action through reciprocating linear motion along its axis, but also realizes bone grinding action through reciprocating rotary motion around its axis, can completely replace the high -speed rotary bone grinding of grinding drill of the prior art, reaches the bone grinding effect of high -speed grinding drill, and avoids the occurrence of the phenomenon that grinding drill is entangled human body soft tissue in the prior art, reduces the probability of the occurrence of medical accident, improves the operation safety.

Description

TECHNICAL FIELD

[0001] The utility model relates to medical equipment technical field especially is a kind of ultrasonic bone mill sword and bone mill device. BACKGROUND

[0002] With the progress of medical technology, minimally invasive surgery under foramen transversarium mirror has been widely used in orthopedic clinical, the existing power tools under foramen transversarium mirror mainly adopt high-speed drill, and bone tissue is removed by the high-speed rotation of drill bit. Since the drill is in high-speed rotation, the drill is easy to entangle human soft tissue, produce traction effect, cause bleeding to affect surgical field, and easily cause medical accidents, resulting in low safety of bone milling surgery. SUMMARY

[0003] To solve the above technical problems, the utility model provides an ultrasonic bone mill sword and ultrasonic bone mill device, which can replace high-speed drill, avoid the occurrence of drill entanglement with human soft tissue phenomenon, and improve the safety of bone milling surgery.

[0004] To achieve the above purpose, the utility model provides an ultrasonic bone mill sword, which comprises a handle, a rod and a head arranged in sequence, the rod comprises a first transmission part, an intermediate transmission part and a second transmission part arranged in sequence, the intermediate transmission part is provided with a spiral groove, the spiral groove is used to convert the axial vibration of the first transmission part into the composite motion of the second transmission part along its axial reciprocating linear motion and reciprocating rotary motion around its axis, the handle is arranged on the first transmission part, and the head is arranged on the second transmission part.

[0005] In an embodiment of the utility model, the spiral groove is provided with a plurality of spiral grooves, and the plurality of spiral grooves are arranged in the axial direction on the intermediate transmission part, and the spiral directions of the plurality of spiral grooves are consistent.

[0006] In an embodiment of the utility model, the head is provided with a cutting tooth, the direction of the rod pointing to the head is a first direction, and the cutting tooth extends from the end of the head in the first direction.

[0007] In an embodiment of the utility model, the cutting tooth is provided with a plurality of cutting teeth, the plurality of cutting teeth are arranged in a ring shape, the direction of the head pointing to the rod is a second direction, the axis of the cutting tooth arranged in a ring shape is provided with a receiving groove, and the receiving groove extends from the center of the cutting tooth in the second direction.

[0008] In an embodiment of the utility model, the direction of the head radially inward is a third direction, and the cutting tooth extends from the end of the head in the superposition direction of the first direction and the third direction.

[0009] In another aspect, an ultrasonic bone grinding device is provided, comprising a foraminotomy mirror, a vibration mechanism and the above-mentioned ultrasonic bone grinding knife, the knife handle of the ultrasonic bone grinding knife is connected to the output shaft of the vibration mechanism, and the foraminotomy mirror is slidably sleeved on the ultrasonic bone grinding knife.

[0010] In an embodiment of the utility model, still include the adapter sleeve, one end of adapter sleeve with foraminotomy mirror contact or separate, the other end of adapter sleeve with vibration mechanism is connected, the knife handle of ultrasonic bone grinding knife and the output shaft of vibration mechanism are transmission connection in adapter sleeve.

[0011] In an embodiment of the utility model, the foraminotomy mirror comprises a foraminotomy base and a working sleeve, the working sleeve is arranged on the foraminotomy base, the knife rod of the ultrasonic bone grinding knife is slidably arranged in the foraminotomy base and the working sleeve, and the knife head of the ultrasonic bone grinding knife extends out of the working sleeve.

[0012] In an embodiment of the utility model, an optical base is arranged on the foraminotomy base, an optical input end and an optical output end are arranged on the optical base, an optical acquisition part is arranged on one end of the working sleeve close to the knife head, and the optical input end and the optical output end are connected with the optical acquisition part.

[0013] In an embodiment of the utility model, a first liquid inlet and a first liquid outlet are arranged on the foraminotomy base, a second liquid inlet and a second liquid outlet are arranged on the end of the working sleeve, a liquid inlet passage and a liquid outlet passage are arranged in the working sleeve, the first liquid inlet is communicated with the second liquid outlet through the liquid inlet passage, and the first liquid outlet is communicated with the second liquid inlet through the liquid outlet passage.

[0014] The above technical solution of the utility model has the following advantages compared with the prior art.

[0015] The intermediate transmission part of the ultrasonic bone grinding knife is provided with a spiral groove, under the action of the spiral groove, the intermediate transmission part converts the vibration of the vibration mechanism into the composite motion of the reciprocating linear motion of the second transmission part along the axial direction and the reciprocating rotary motion around the axis of the intermediate transmission part, the composite motion is transmitted to the knife head through the second transmission part, the knife head can not only realize the bone grinding action through the reciprocating linear motion along the axial direction, but also realize the bone grinding action through the reciprocating rotary motion around the axial direction, can completely replace the high-speed rotary grinding drill of the prior art, achieve the bone grinding effect of high-speed grinding drill, avoid the phenomenon of winding human soft tissue of the grinding drill in the prior art, reduce the probability of medical accidents, and improve the safety of bone grinding surgery. BRIEF DESCRIPTION OF DRAWINGS

[0016] In order to more clearly illustrate the technical scheme in the embodiments of the present application, the drawings needed to be used in the following embodiment description will be briefly introduced, and obviously, the drawings in the following description are only some embodiments of the present application, and other drawings can be obtained by those skilled in the art without any creative effort on the premise of not paying creative effort.

[0017] Figure 1 is a structural schematic view of the ultrasonic bone milling cutter of the present application;

[0018] Figure 2 is Figure 1 a local enlarged schematic view of position A in the present application;

[0019] Figure 3 is Figure 1 a local enlarged schematic view of position B in the present application;

[0020] Figure 4 is a structural schematic view of the cutting tooth of the ultrasonic bone milling cutter of the present application;

[0021] Figure 5 is a structural schematic view of the ultrasonic bone milling device of the present application (without installing the ultrasonic bone milling cutter);

[0022] Figure 6 is Figure 5 a local enlarged schematic view of position C in the present application;

[0023] Figure 7 is a local sectional structural schematic view of the ultrasonic bone milling device of the present application (installing the ultrasonic bone milling cutter);

[0024] Figure 8 is Figure 7 a local enlarged schematic view of position D in the present application;

[0025] Figure 9 is Figure 7 a local enlarged schematic view of position E in the present application.

[0026] Explanation of the drawing marks in the specification:

[0027] 1, cutter handle; 2, cutter rod; 3, cutter head; 4, first transmission part; 5, intermediate transmission part; 6, second transmission part; 7, helical groove; 8, cutting tooth; 9, containing groove; 10, intervertebral foramen mirror; 11, vibration mechanism; 12, adapter sleeve; 13, hole mirror base; 14, working sleeve; 15, optical base; 16, optical input end; 17, optical output end; 18, optical acquisition part; 19, first liquid inlet; 20, first liquid outlet; 21, second liquid inlet; 22, second liquid outlet; 23, liquid inlet passage; 24, liquid outlet passage; 25, stepped shaft; 26, through cavity; 27, through cavity; 28, assembly part. DETAILED DESCRIPTION

[0028] In order to make the purpose, technical scheme and advantages of the utility model clearer, the technical scheme in the utility model embodiment will be clearly and completely described in combination with the drawings in the utility model embodiment below. Obviously, the described embodiments are only part of the embodiments of the utility model and not all the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by those skilled in the art without creative labor belong to the protection scope of the utility model.

[0029] Embodiment one

[0030] Referring to Figures 1-4 The utility model discloses an ultrasonic bone drill, including the handle 1 that sets gradually, drill rod 2 and drill head 3, drill rod 2 includes the first transmission part 4 that sets gradually, intermediate transmission part 5 and second transmission part 6, and the spiral groove 7 is arranged on intermediate transmission part 5, and the spiral groove 7 is used to convert the axial vibration of first transmission part 4 into the compound motion of the reciprocating linear motion along the axial direction of second transmission part 6 and the reciprocating rotary motion around its axis, and the handle 1 is arranged on first transmission part 4, and the drill head 3 is arranged on second transmission part 6.

[0031] The ultrasonic bone drill of the application converts the axial vibration along the drill rod 2 into the compound motion of the reciprocating linear motion along the axial direction of the drill rod 2 and the reciprocating rotary motion around the axis of the drill rod 2, to avoid the occurrence of the phenomenon that the drill is wound around the human soft tissue, reduce the probability of the occurrence of medical accidents and improve the safety of bone grinding surgery. Specifically, as shown in Figure 1 The ultrasonic bone drill of the application includes a drill head 3, a handle 1 and a drill rod 2, the drill rod 2 is located between the drill head 3 and the handle 1, the drill head 3 is used to cut bone tissue, and the handle 1 is used to realize the transmission connection between the ultrasonic bone drill and a vibration mechanism 11. Further, the drill rod 2 includes a first transmission part 4, an intermediate transmission part 5 and a second transmission part 6, the first transmission part 4 is used to be connected with the vibration mechanism 11, the intermediate transmission part 5 realizes the switching of the first transmission part 4 and the second transmission part 6, and the second transmission part 6 is used to realize the switching of the drill head 3 and the intermediate transmission part 5. Further, as shown in Figure 3As shown, the intermediate transmission part 5 of the present application is provided with a spiral groove 7, the spiral groove 7 includes a plurality of sub-spiral grooves 7, the plurality of sub-spiral grooves 7 are arranged in a spiral around the axis of the intermediate transmission part 5, and the spiral walls are formed between adjacent two sub-spiral grooves 7. When the vibration of the vibration mechanism 11 is transmitted to the first transmission part 4 through the tool shank 1, the first transmission part 4 has reciprocating linear motion along its axial direction, and the first transmission part 4 transmits its reciprocating linear motion to the intermediate transmission part 5. Under the action of the spiral wall, the vibration of the intermediate transmission part 5 along its axial direction is converted into the composite motion of the reciprocating linear motion along its axial direction and the reciprocating rotary motion around its axis. Since the second transmission part 6 is connected to the intermediate transmission part 5, the motion of the second transmission part 6 includes the reciprocating linear motion along its axial direction and the reciprocating rotary motion around its axis. Among them, the reciprocating rotary motion around the axis of the second transmission part 6 is the reciprocating rotary motion with a preset angle, and the preset angle of the reciprocating rotary motion is small, and the preset angle is related to the spiral angle of the spiral groove 7 and the amplitude of the vibration mechanism 11. Further, the second transmission part 6 transmits the composite motion to the tool bit 3, so as to realize the composite motion of the tool bit 3, and then realize the bone grinding action through the tool bit 3. The reciprocating linear motion along the axis of the intermediate transmission part 5 of the present application is the main cutting motion of the bone grinding, and the reciprocating rotary motion around the axis of the intermediate transmission part 5 with a preset angle is the auxiliary motion of the bone grinding. Under the composite motion of the main cutting motion and the auxiliary motion, the high-speed rotary motion of the prior art is replaced. In addition, the reciprocating rotary motion around the axis of the tool bit 3 can reduce the bone grinding resistance and improve the bone grinding efficiency.

[0032] The intermediate transmission part 5 of the ultrasonic bone grinding tool of the present application is provided with a spiral groove 7, and under the action of the spiral groove 7, the intermediate transmission part 5 converts the vibration of the vibration mechanism 11 into the composite motion of the reciprocating linear motion along the axial direction of the second transmission part 6 and the reciprocating rotary motion around the axis of the intermediate transmission part 5. The composite motion is transmitted to the tool bit 3 through the second transmission part 6. The tool bit 3 can not only realize the bone grinding action through the reciprocating linear motion along its axis, but also realize the bone grinding action through the reciprocating rotary motion around its axis. It can completely replace the high-speed rotary grinding of the existing technology, achieve the bone grinding effect of high-speed grinding, and avoid the phenomenon of winding human soft tissue by the existing technology. It reduces the probability of medical accidents and improves the safety of bone grinding surgery.

[0033] In one embodiment, the spiral groove 7 is provided with a plurality of spiral grooves 7, and the plurality of spiral grooves 7 are arranged along the axial direction on the intermediate transmission part 5, and the spiral directions of the plurality of spiral grooves 7 are consistent.

[0034] As Figure 1As shown, the intermediate transmission part 5 of this application is provided with a number of spiral grooves 7. These spiral grooves 7 can be arranged axially on the intermediate transmission part 5, which is equivalent to connecting a number of spiral grooves 7 in series. The rotation angle of the reciprocating rotation motion around its axis on the intermediate transmission part 5 can be amplified by the series spiral grooves 7, which is the preset angle. The specific number of spiral grooves 7, the spiral angle of the spiral grooves 7 and the amplitude of the vibration mechanism 11 are designed according to actual needs to determine a suitable preset angle.

[0035] In one embodiment, the cutter head 3 is provided with cutting teeth 8, the direction in which the cutter shank 2 points to the cutter head 3 is a first direction, and the cutting teeth 8 extend from the end of the cutter head 3 along the first direction.

[0036] like Figure 2 As shown, the blade head 3 of this application is provided with cutting teeth 8, which are used to cut bone tissue. Furthermore, the direction in which the blade shank 2 points to the blade head 3 is defined as the first direction, and the extension direction of the cutting teeth 8 is along the first direction. Therefore, the cutting teeth 8 are not provided on the cylindrical side of the blade head 3, which can avoid the phenomenon of the cutting teeth 8 on the cylindrical side entanglement with human soft tissue, and further improve the safety of the operation.

[0037] In one embodiment, a plurality of cutting teeth 8 are provided, and the plurality of cutting teeth 8 are arranged in a ring. The direction in which the cutter head 3 points to the cutter bar 2 is the second direction. A receiving groove 9 is provided at the axis of the ring-arranged cutting teeth 8, and the receiving groove 9 extends from the center of the cutting teeth 8 along the second direction.

[0038] The opposite direction of the first direction is defined as the second direction, that is, the direction in which the cutter head 3 points to the cutter shank 2 is defined as the second direction. For example... Figure 2 As shown, the cutting teeth 8 of this application include a plurality of teeth arranged in a ring around the axis of the cutter head 3. Cutting bone tissue using these ring-shaped cutting teeth can improve cutting efficiency. The center of each ring-shaped cutting tooth 8 is a cavity, which extends from the cutting tooth 8 along a second direction to form a receiving groove 9, such as... Figure 8 As shown, the receiving groove 9 is used to receive bone fragments generated during the bone grinding process, so as to facilitate the removal of fragments during bone grinding.

[0039] In one embodiment, the radially inward direction of the cutter head 3 is the third direction, and the cutting teeth 8 extend from the end of the cutter head 3 along the superposition direction of the first direction and the third direction.

[0040] The direction from the tool holder 2 to the tool head 3 is the first direction D2, and the radial inward direction of the tool holder 2 is the third direction D1. The superposition direction D of the first direction and the third direction is as follows: Figure 4As shown, the extension direction of the cutting teeth 8 is along the stacking direction D, that is, not only the cutting teeth 8 are not arranged on the cylindrical side of the tool head 3, but also the cutting teeth 8 are arranged to have an inclination angle inward in the radial direction, so as to further avoid the phenomenon of the cutting teeth 8 winding the soft tissue of the human body, and improve the safety of the operation.

[0041] In one of the embodiments, the tool handle 1 is provided with an assembly part, and the assembly part has a preset distance from the end of the tool handle 1.

[0042] As shown in the drawings, Figure 1 The tool handle 1 is provided with an assembly part 28, which is a flat mouth structure. When it is necessary to connect the ultrasonic bone milling tool with the vibration mechanism 11, the torque wrench is clamped on the flat mouth structure, so as to facilitate the threaded connection of the tool handle 1 with the output shaft of the ultrasonic bone milling tool. Further, the assembly part 28 has a preset distance from the end of the tool handle 1, so as to reserve a corresponding operation space for the wrench, and facilitate the cooperation of the wrench with the flat mouth.

[0043] In one of the embodiments, a stepped shaft 25 is arranged between the tool handle 1 and the tool rod 2, and the stepped shaft 25 is used to amplify the vibration amplitude of the tool rod 2 along the axial direction thereof.

[0044] As shown in the drawings, Figure 1 The stepped shaft 25 is arranged between the tool handle 1 and the tool rod 2. The vibration on the output shaft of the vibration mechanism 11 is transmitted to the tool handle 1, and the vibration on the tool handle 1 is transmitted to the tool rod 2. Due to the existence of the stepped shaft 25, the vibration on the tool handle 1 is amplified after passing through the stepped shaft 25, and the vibration of the tool rod 2 along the axial direction thereof is correspondingly amplified due to the reduction of the cross-sectional area of the tool rod 2, so as to improve the bone milling efficiency.

[0045] Embodiment two

[0046] Provided is an ultrasonic bone milling device, which comprises an intervertebral foramen mirror 10, a vibration mechanism 11 and an ultrasonic bone milling tool. The tool handle 1 of the ultrasonic bone milling tool is connected to the output shaft of the vibration mechanism 11, and the intervertebral foramen mirror 10 is slidably sleeved on the ultrasonic bone milling tool.

[0047] The application also provides an ultrasonic bone milling device comprising the above ultrasonic bone milling tool. The ultrasonic bone milling device comprising the above ultrasonic bone milling tool can effectively avoid the phenomenon of the cutting teeth 8 winding the soft tissue of the human body, so as to improve the safety of the operation. Specifically, Figure 5 and Figure 7As shown, the ultrasonic bone milling device comprises an ultrasonic bone milling cutter, a foraminotomy mirror 10 and a vibration mechanism 11. The vibration mechanism 11 is used to provide a bone milling power source for the ultrasonic bone milling cutter, and the output shaft of the vibration mechanism 11 is in transmission connection with the cutter handle 1 of the ultrasonic bone milling cutter. Specifically, the output shaft of the vibration mechanism 11 is in threaded connection with the cutter handle 1 of the ultrasonic bone milling cutter, so that the vibration mechanism 11 can transmit the vibration generated thereby to the ultrasonic bone milling cutter, and then the ultrasonic bone milling cutter can mill the bone tissue. Further, the foraminotomy mirror 10 is slidably sleeved on the ultrasonic bone milling cutter. When the vibration mechanism 11 works, the ultrasonic bone milling cutter can make reciprocating linear motion along the axial direction of the foraminotomy mirror 10, so as to convert the reciprocating linear motion of the intermediate transmission part 5 along the axial direction thereof into the compound motion of the reciprocating linear motion of the second transmission part 6 along the axial direction thereof and the reciprocating rotary motion of the second transmission part 6 around the axial direction thereof through the helical groove 7 on the intermediate transmission part 5. The compound motion is transmitted to the cutter head 3 through the second transmission part 6. The cutter head 3 can not only realize the bone milling action through the reciprocating linear motion along the axial direction thereof, but also realize the bone milling action through the reciprocating rotary motion around the axial direction thereof, which can completely replace the high-speed rotary bone milling of the prior art, avoids the phenomenon that the milling drill of the prior art is wound around the soft tissue of the human body, reduces the probability of medical accidents, and improves the safety of the operation.

[0048] In one embodiment, the ultrasonic bone milling device further comprises an adapter sleeve 12. One end of the adapter sleeve 12 is in contact with or separated from the foraminotomy mirror 10, and the other end of the adapter sleeve 12 is connected with the vibration mechanism 11. The cutter handle 1 of the ultrasonic bone milling cutter and the output shaft of the vibration mechanism 11 are in transmission connection in the adapter sleeve 12.

[0049] The ultrasonic bone milling device of the present application further comprises an adapter sleeve 12. Specifically, as shown in the drawings, Figure 5 and Figure 7As shown, the adapter sleeve 12 is arranged between the intervertebral foramen mirror 10 and the vibration mechanism 11, that is, one end of the adapter sleeve 12 is in contact with or separated from the intervertebral foramen mirror 10, and the other end of the adapter sleeve 12 is connected with the vibration mechanism 11. Further, when the user rotates or moves the vibration mechanism 11, the vibration mechanism 11 can drive the ultrasonic bone mill to rotate or move axially in the intervertebral foramen mirror 10, and in this process, the end of the adapter sleeve 12 away from the vibration mechanism 11 is in contact with or separated from the top surface of the intervertebral foramen mirror 10. Further, since power transmission is required between the vibration mechanism 11 and the ultrasonic bone mill, a through cavity 27 is arranged in the adapter sleeve 12, the handle 1 of the ultrasonic bone mill and the output shaft of the vibration mechanism 11 are located in the through cavity 27, and the handle 1 of the ultrasonic bone mill and the output shaft of the vibration mechanism 11 are in transmission connection (screw connection) in the through cavity 27, so as to transmit the vibration of the vibration mechanism 11 to the blade rod 2 of the ultrasonic bone mill through the handle 1, and further realize the reciprocating linear motion of the first transmission part 4 on the blade rod 2 along the axial direction. Wherein, the adapter sleeve 12 can protect the connection between the handle 1 of the ultrasonic bone mill and the output shaft of the vibration mechanism 11 inside it.

[0050] In one of the embodiments, the intervertebral foramen mirror 10 comprises a foramen mirror base 13, the foramen mirror base 13 is provided with a working sleeve 14, the blade rod 2 of the ultrasonic bone mill is slidably arranged in the foramen mirror base 13 and the working sleeve 14, and the blade head 3 of the ultrasonic bone mill extends out of the working sleeve 14.

[0051] The present application realizes the sliding support of the ultrasonic bone mill through the foramen mirror base 13 of the intervertebral foramen mirror 10. Specifically, as shown in Figure 7 As shown, the intervertebral foramen mirror 10 comprises a foramen mirror base 13, the adapter sleeve 12 is arranged between the vibration mechanism 11 and the foramen mirror base 13 of the intervertebral foramen mirror 10, the foramen mirror base 13 is provided with a working sleeve 14 at the end away from the adapter sleeve 12, and the foramen mirror base 13 and the working sleeve 14 are both provided with a through cavity 26, as shown in Figure 9 As shown, the ultrasonic bone mill is slidably arranged in the through cavity 26 of the foramen mirror base 13 and the working sleeve 14, and further, the blade rod 2 of the ultrasonic bone mill is slidably arranged in the through cavity 26 of the foramen mirror base 13 and the working sleeve 14, so as to facilitate the sliding motion of the blade rod 2 of the ultrasonic bone mill in the intervertebral foramen mirror 10 through the vibration mechanism 11. In addition, the blade head 3 of the ultrasonic bone mill extends out of the working sleeve 14, so as to facilitate the bone grinding through the blade head 3.

[0052] In one of the embodiments, the foramen mirror base 13 is provided with an optical base 15, the optical base 15 is provided with an optical input end 16 and an optical output end 17, and the working sleeve 14 is provided with an optical acquisition part 18 at the end close to the blade head 3, the optical input end 16 and the optical output end 17 are both connected with the optical acquisition part 18.

[0053] The percutaneous endoscopic discectomy unit 10 of this application acquires images of the bone-grinding area at the head of the blade 3 via the optical acquisition unit 18. Specifically, as shown... Figure 7 As shown, the percutaneous endoscope 10 has an optical base 15 on its base 13. An optical acquisition unit 18 is located at the end of the working sleeve 14, near the blade tip 3. The optical acquisition unit 18 includes an image acquisition unit and an illumination unit. The image acquisition unit acquires images of the blade tip 3, and the illumination unit illuminates the blade tip 3. An optical input terminal 16 is located on the optical base 15 and is connected to the optical acquisition unit 18 to transmit light to the illumination unit for illumination. The image of the blade tip 3 is then acquired by the image acquisition unit. An optical output terminal 17 is also located on the optical base 15 and is connected to the optical acquisition unit 18. This allows the image of the blade tip 3 acquired by the image acquisition unit to be transmitted to the optical output terminal 17, which then transmits the image to the display system. The display system displays the image of the blade tip 3 in real time, facilitating surgery.

[0054] In one embodiment, the endoscope base 13 is provided with a first liquid inlet 19 and a first liquid outlet 20, and the end of the working sleeve 14 is provided with a second liquid inlet 21 and a second liquid outlet 22. The working sleeve 14 is provided with a liquid inlet passage 23 and a liquid outlet passage 24. The first liquid inlet 19 is connected to the second liquid outlet 22 through the liquid inlet passage 23, and the first liquid outlet 20 is connected to the second liquid inlet 21 through the liquid outlet passage 24.

[0055] The ultrasonic bone-grinding device of this application achieves cooling of the cutting head 3 during the bone-grinding process through the inlet passage 23 and outlet passage 24 on the percutaneous endoscopic disc 10. Specifically, as shown... Figure 5 and Figure 6As shown, the hole mirror base 13 is provided with a first liquid inlet 19, the working sleeve 14 is provided with a liquid inlet passage 23, the end of the working sleeve 14 is provided with a second liquid outlet 22, one end of the liquid inlet passage 23 is communicated with the first liquid inlet 19, the other end of the liquid inlet passage 23 is communicated with the second liquid outlet 22, and the cooling liquid is driven by positive pressure to enter the liquid inlet passage 23 through the first liquid inlet 19, and then flows to the position of the tool bit 3 through the second liquid outlet 22, so as to cool the tool bit 3. Further, the end of the working sleeve 14 is provided with a second liquid inlet 21, the working sleeve 14 is provided with a liquid outlet passage 24, the hole mirror base 13 is provided with a first liquid outlet 20, one end of the liquid outlet passage 24 is communicated with the second liquid inlet 21, the other end of the liquid outlet passage 24 is communicated with the first liquid outlet 20, and the cooling liquid is driven by negative pressure to enter the liquid outlet passage 24 through the second liquid inlet 21, and then flows out through the first liquid outlet 20, so as to discharge the cooling liquid after heat exchange. Preferably, the cooling liquid is physiological saline.

[0056] It should be noted that the above are only the preferred embodiments of the present application and the technical principles applied. Those skilled in the art will understand that the present application is not limited to the specific embodiments described herein, and those skilled in the art can make various obvious changes, re-adjustments and substitutions without departing from the scope of the present application. Therefore, although the present application has been described in more detail through the above embodiments, the present application is not limited to the above embodiments, and can include more other equivalent embodiments without departing from the concept of the present application, and the scope of the present application is determined by the scope of the appended claims.

Claims

1. An ultrasonic bone mill, characterized by: The tool shank (1), the tool rod (2) and the tool head (3) are sequentially arranged, the tool rod (2) comprises a first transmission part (4), an intermediate transmission part (5) and a second transmission part (6) which are sequentially arranged, the intermediate transmission part (5) is provided with a spiral groove (7), the spiral groove (7) is used for converting the axial vibration of the first transmission part (4) into the composite motion of the second transmission part (6) along the axial reciprocating linear motion and the axial reciprocating rotary motion, the tool shank (1) is arranged on the first transmission part (4), and the tool head (3) is arranged on the second transmission part (6).

2. The ultrasonic bone mill of claim 1, wherein: The spiral groove (7) is arranged in plurality, and the plurality of spiral grooves (7) are arranged in the axial direction on the intermediate transmission part (5), and the spiral directions of the plurality of spiral grooves (7) are consistent.

3. The ultrasonic bone mill of claim 1, wherein: The tool head (3) is provided with a cutting tooth (8), the direction in which the tool rod (2) points to the tool head (3) is a first direction, and the cutting tooth (8) extends from the end of the tool head (3) in the first direction.

4. The ultrasonic bone mill of claim 3, wherein: The cutting tooth (8) is arranged in plurality, the plurality of cutting teeth (8) are arranged in a ring shape, the direction in which the tool head (3) points to the tool rod (2) is a second direction, the axis of the cutting tooth (8) arranged in the ring shape is provided with an accommodating groove (9), and the accommodating groove (9) extends from the center of the cutting tooth (8) in the second direction.

5. The ultrasonic bone mill of claim 3, wherein: The direction radially inward of the tool head (3) is a third direction, and the cutting tooth (8) extends from the end of the tool head (3) in the superposition direction of the first direction and the third direction.

6. An ultrasonic bone mill device, characterized by: The intervertebral foramen mirror (10), the vibration mechanism (11) and the ultrasonic bone milling tool according to any one of claims 1-5 are arranged, the tool shank (1) of the ultrasonic bone milling tool is connected to the output shaft of the vibration mechanism (11), and the intervertebral foramen mirror (10) is slidably sleeved on the ultrasonic bone milling tool.

7. The ultrasonic bone abrader of claim 6, wherein: The adapter sleeve (12) is further arranged, one end of the adapter sleeve (12) is in contact with or separated from the intervertebral foramen mirror (10), the other end of the adapter sleeve (12) is connected with the vibration mechanism (11), and the tool shank (1) of the ultrasonic bone milling tool and the output shaft of the vibration mechanism (11) are drivingly connected in the adapter sleeve (12).

8. The ultrasonic bone abrader of claim 6, wherein: The intervertebral foramen mirror (10) comprises a foramen mirror base (13) and a working sleeve (14), the working sleeve (14) is arranged on the foramen mirror base (13), the tool rod (2) of the ultrasonic bone milling tool is slidably arranged in the foramen mirror base (13) and the working sleeve (14), and the tool head (3) of the ultrasonic bone milling tool extends out of the working sleeve (14).

9. The ultrasonic bone abrader of claim 8, wherein: The foramen mirror base (13) is provided with an optical base (15), the optical base (15) is provided with an optical input end (16) and an optical output end (17), one end of the working sleeve (14) close to the tool head (3) is provided with an optical acquisition part (18), and the optical input end (16) and the optical output end (17) are connected with the optical acquisition part (18).

10. The ultrasonic bone abrader of claim 8, wherein: The hole mirror base (13) is provided with a first liquid inlet (19) and a first liquid outlet (20), the end of the working sleeve (14) is provided with a second liquid inlet (21) and a second liquid outlet (22), the working sleeve (14) is provided with a liquid inlet passage (23) and a liquid outlet passage (24), the first liquid inlet (19) is communicated with the second liquid outlet (22) through the liquid inlet passage (23), and the first liquid outlet (20) is communicated with the second liquid inlet (21) through the liquid outlet passage (24).

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