阅读说明：本技术 一种实时反馈式智能钻孔工具及钻孔方法 (Real-time feedback type intelligent drilling tool and drilling method ) 是由 简小华 李红卫 高锋 于 2021-08-06 设计创作，主要内容包括：本发明涉及实时反馈式智能钻孔工具及钻孔方法,该工具包括钻头、钻柄、动力件、设置在钻头内部且随着钻头同步运动的超声探头、信息接收处理模块,其中超声探头能够获取待钻孔物体的厚度信息和钻头已钻深度信息,且超声探头的工作面的朝向与钻头的钻取方向一致；信息接收处理模块与动力件连通并控制动力件的启停,且信息接收处理模块包括滑环、超声激励接收模块、信息处理模块、显示器、电源模块。本发明一方面能够避免钻穿待钻取对象,造成与待钻取对象及周边的意外损坏,而且钻取的深度可以直接获取,方便钻孔操作；另一方面一旦钻取出现错位或偏差,信息接收处理模块能够智能控制动力件急停。(The invention relates to a real-time feedback type intelligent drilling tool and a drilling method, wherein the tool comprises a drill bit, a drill handle, a power part, an ultrasonic probe which is arranged in the drill bit and synchronously moves along with the drill bit, and an information receiving and processing module, wherein the ultrasonic probe can acquire the thickness information of an object to be drilled and the drilled depth information of the drill bit, and the orientation of the working surface of the ultrasonic probe is consistent with the drilling direction of the drill bit; the information receiving and processing module is communicated with the power part and controls the start and stop of the power part, and comprises a slip ring, an ultrasonic excitation receiving module, an information processing module, a display and a power supply module. According to the invention, on one hand, accidental damage to the object to be drilled and the periphery caused by drilling through the object to be drilled can be avoided, and the drilling depth can be directly obtained, so that the drilling operation is convenient; on the other hand, once the drilling is dislocated or deviated, the information receiving and processing module can intelligently control the power part to stop suddenly.)

1. The utility model provides a real-time reaction type intelligence drilling tool, its includes drill bit, drillstock and power spare, its characterized in that: the intelligent drilling tool further comprises an ultrasonic probe which is arranged in the drill bit and moves synchronously with the drill bit, and an information receiving and processing module communicated with the ultrasonic probe, wherein the ultrasonic probe can acquire thickness information of an object to be drilled and drilled depth information of the drill bit, and the orientation of the working surface of the ultrasonic probe is consistent with the drilling direction of the drill bit; the information receiving and processing module is communicated with the power part and controls the power part to be started and stopped, the information receiving and processing module comprises a slip ring, an ultrasonic excitation receiving module, an information processing module, a display and a power supply module, wherein the slip ring is rotatably connected with the drill bit through a connector, and the display displays the data information of the drilled hole in real time.

2. The real-time feedback-type intelligent drilling tool of claim 1, wherein: the drill bit comprises a drill rod and a drill blade, wherein the drill rod is provided with a drilling end part and a connecting end part, the connecting end part is in transmission connection with the power part, and the ultrasonic probe is positioned in the drilling end part.

3. The real-time feedback-type intelligent drilling tool of claim 2, wherein: the orientation of the working surface of the ultrasonic probe is consistent with the drilling direction of the drilling end part, and the working frequency of the ultrasonic probe is between 20KHz and 10 MHz.

4. The real-time feedback-type intelligent drilling tool of claim 2, wherein: the drill handle is provided with a chuck which is arranged in a relative motion way, and the connecting end part is detachably connected to the chuck.

5. The real-time feedback-type intelligent drilling tool of claim 2, wherein: the ultrasonic probes are distributed on the drilling end in an array mode, and the information receiving and processing module is arranged in a real-time imaging mode according to data obtained by the ultrasonic probes.

6. The real-time feedback-type intelligent drilling tool of claim 5, wherein: the drilling end is conical, one of the ultrasonic probes is positioned at the conical top end, and the rest ultrasonic probes are uniformly distributed around the circumference of the conical surface.

7. The real-time feedback-type intelligent drilling tool of claim 6, wherein: and a cable through hole is further formed in the drill rod, the slip ring penetrates out of the connector, and the penetrating end part of the slip ring is communicated with the ultrasonic probe through a coaxial cable arranged in the cable through hole.

8. The real-time feedback-type intelligent drilling tool of claim 7, wherein: the drill bit is perpendicular to the drill handle and located at one end of the drill handle, the sliding ring, the power part and the display are located at the end where the drill bit is located, and the power part is located between the display and the sliding ring.

9. A drilling method of a bone drill is characterized in that: the bone drill is the real-time feedback type intelligent drilling tool of any one of claims 1 to 8, and comprises the following steps:

s1, vertically placing the top of the drill bit on the surface point of the bone, starting the ultrasonic module, generating echo from the upper and lower surfaces of the bone, and obtaining TOF values of the upper and lower surfaces, so

H0＝TOF×V_B/2 (1)

V in formula (1)_BIs the propagation velocity of the ultrasound in the bone; the TOF value is the time required by the echoes generated by the upper and lower surfaces of the bone; h0 is the thickness of the bone;

s2, starting the power piece, rotating the drill bit and drilling into the bone, wherein the residual thickness of the drilled hole satisfies the following formula:

T0＝TOF×V_B/2 (2)

v in formula (2)_BIs the propagation velocity of the ultrasound in the bone; the TOF value is the time required for the echo generated by the drill tip and the lower surface of the bone; t0 calculating the thickness of the remaining bone in real time;

s3, T0 are displayed on the display in real time, and according to the T0 change condition, the average drilling speed of the current drill bit can be calculated:

C＝ΔT0/ΔTOF (3)

in the formula (3), Δ T0 is the distance change of the residual bone thickness T0 measured in two times, Δ TOF is the time difference between the two sides, and C is the drilling speed change rate of the two times;

s4, adjusting the drilling speed in real time according to the requirement, stopping drilling after the drill bit reaches the expected position, and calculating the drilling depth H1 by using the previous measurement result:

H1＝H0-T0 (4)

wherein H0 in formula (4) is the thickness of the bone in formula (1); t0 is the real-time calculation of the thickness of the remaining bone in equation (2).

10. The method of drilling a bone drill of claim 9, wherein: when T0 or C shows abnormal, the power part stops rotating or rotates reversely to unscrew the drill hole; and at the same time, the drill was stopped as it exited to the point of penetration of the bone surface, measured with an ultrasonic probe to verify H1,

H1＝TOF×V_A/2 (5)

in the formula (5), the speed of sound V_AThe TOF value is the time required for the echo generated by the drill bit tip and the bottom surface of the hole being drilled, for the speed of acoustic propagation of the ultrasound probe in the air or saline in the hole being drilled.

Technical Field

The invention belongs to the field of electric tools, particularly relates to a real-time feedback type intelligent drilling tool, and also relates to a drilling method of the drilling tool.

Background

As is well known, the electric tools used for drilling holes are generally electric drills, and the electric tools are also called bone drills for drilling holes in bones in surgical operations, wherein the conventional bone drills are similar to the electric drills in common use, and a drill bit is driven by a motor to rotate at a high speed to drill a certain cavity in the bones or objects.

However, the following drawbacks exist for the electric drill or the bone drill (taking the bone drill as an example):

1. the distance that the front end of the drill bit can continuously drill a hole cannot be detected in real time, so that the bone can be drilled through extremely possibly, and the accidental injury to nerves and blood vessels is caused;

2. the drilling depth cannot be obtained, and the hole depth needs to be measured by measuring tools such as calipers after drilling each time, so that the operation time and risk are increased;

3. the drilling device is basically controlled manually, and the drilling cannot be automatically stopped after errors occur.

Disclosure of Invention

The invention aims to overcome the defects of the prior art and provide a real-time feedback type intelligent drilling tool.

The invention also relates to a drilling method of the drilling tool.

In order to solve the technical problems, the invention adopts the following technical scheme:

a real-time feedback type intelligent drilling tool comprises a drill bit, a drill handle, a power part, an ultrasonic probe and an information receiving and processing module, wherein the ultrasonic probe is arranged in the drill bit and synchronously moves along with the drill bit, the information receiving and processing module is communicated with the ultrasonic probe, the ultrasonic probe can acquire thickness information of an object to be drilled and drilled depth information of the drill bit, and the orientation of a working surface of the ultrasonic probe is consistent with the drilling direction of the drill bit; the information receiving and processing module is communicated with the power part and controls the power part to be started and stopped, the information receiving and processing module comprises a sliding ring, an ultrasonic excitation receiving module, an information processing module, a display and a power supply module, wherein the sliding ring is rotatably connected with the drill bit through a connector, and the display displays the data information of the drilled hole in real time.

Preferably, the drill head comprises a drill rod and a drill blade, wherein the drill rod is provided with a drilling end part and a connecting end part, the connecting end part is in transmission connection with the power part, and the ultrasonic probe is positioned in the drilling end part. This enables more accurate acquisition of the required data information.

According to a specific implementation and preferred aspect of the invention, the working face of the ultrasonic probe is oriented in line with the drilling direction of the drilling end, and the operating frequency of the ultrasonic probe is between 20KHz and 10 MHz. The frequency is selected according to the fact that a low-frequency probe is selected if the penetration depth is required to be deep, and a high-frequency probe is selected if the requirement on the precision control of the drilling depth of the drill bit is high. The ultrasonic probe can be an ultrasonic probe of piezoelectric ceramics, piezoelectric single crystals and composite materials. Meanwhile, in order to improve the detection sensitivity and the signal-to-noise ratio of the probe, an impedance matching circuit, a miniature front signal amplifying circuit and the like can be arranged at the front end.

Preferably, a chuck is provided on the drill shank, which chuck is arranged for relative movement and to which the connecting end is detachably connected. Under the arrangement of the chuck, the drill bit is conveniently and relatively connected with the power piece, so that the high-speed rotation of the drill bit is implemented.

According to another embodiment and a preferable aspect of the present invention, the ultrasonic probe has a plurality of ultrasonic probes and the array is distributed at the drilling end, and the information receiving and processing module is configured to perform real-time imaging based on data obtained by the plurality of ultrasonic probes. Therefore, in the drilling process, the detection of peripheral tissues and conditions of the side wall of the drill bit can be realized, the ultrasonic probes of the array can be placed on the side wall of the drill bit and connected with the ultrasonic excitation receiving module through the sliding ring, so that real-time imaging is realized, and particularly when the ultrasonic probe is used as a bone drill, the accidental injury to nerves and blood vessels caused by the fact that the bone is drilled through can be avoided, the operation is convenient to implement through real-time imaging, and the operation risk and time are greatly reduced.

Preferably, the drilling end is tapered (including frustum-shaped as well), one of the plurality of ultrasound probes is located at the apex end of the taper, and the remainder are evenly distributed around the circumference of the taper.

In this example, the connector is mainly used for connecting with a slip ring joint in the drill shank and transmitting high-voltage excitation and echo signals, and the slip ring is connected with an ultrasonic probe in the drill bit through the connector and realizes that the transducer can rotate along with the drill bit and a rear-end cable in the drill shank can be fixed. And a magnetic ring and other similar functional structures can be adopted for realizing related functions. And the cable at the other end of the slip ring is connected to the ultrasonic excitation receiving module.

Furthermore, a cable through hole is formed in the drill rod, the slip ring penetrates out of the connector, and the penetrating end portion of the slip ring is communicated with the ultrasonic probe through a coaxial cable arranged in the cable through hole.

In addition, the drill bit sets up with the drillstock is perpendicular, and is located the one end of drillstock, and sliding ring, power spare, display all are located the tip at drill bit place, and the power spare is located between display and the sliding ring. Therefore, the shape of the electric tool is different from that of a conventional electric drill, and corresponding data or/and images can be displayed on the display when the drill handle is held by a hand to drill, so that the set drilling depth can be accurately implemented.

Preferably, the ultrasonic excitation receiving module, the information processing module and the power supply module are arranged in the drill handle side by side, and a wireless transmission module and an external interface module are further arranged at the other end of the drill handle. Therefore, the electric tool is reasonable in combination layout and proportion distribution, and saves labor when being held by hand.

Meanwhile, the ultrasonic excitation receiving module mainly comprises a high-voltage pulse excitation module, an ultrasonic echo receiving module, a detection envelope, data acquisition, Time of flight (TOF) detection and the like, and has the main functions of exciting an ultrasonic probe in the drill bit, generating ultrasonic waves, and performing functions of filtering, gain amplification, envelope acquisition, TOF detection, data acquisition and transmission and the like on ultrasonic echo signals received by the ultrasonic probe.

The collected echo signals and TOF data can be analyzed and processed through the information processing module and displayed through the display, or transmitted to the upper computer through the signal transmission line in the wireless module or the interface module to be processed and displayed by the computer software.

The other technical scheme of the invention is as follows: a drilling method of a bone drill is provided, wherein the bone drill is the real-time feedback type intelligent drilling tool and comprises the following steps:

s1, vertically placing the top of the drill bit on the surface point of the bone, starting the ultrasonic module, generating echo from the upper and lower surfaces of the bone, and obtaining TOF values of the upper and lower surfaces, so

H0＝TOF×V_B/2 (1)

V in formula (1)_BIs the propagation velocity of the ultrasound in the bone; the TOF value is the time required by the echoes generated by the upper and lower surfaces of the bone; h0 is the thickness of the bone;

s2, starting the power piece, rotating the drill bit and drilling into the bone, wherein the residual thickness of the drilled hole satisfies the following formula:

T0＝TOF×V_B/2 (2)

v in formula (2)_BIs the propagation velocity of the ultrasound in the bone; the TOF value is the time required for the echo generated by the drill tip and the lower surface of the bone; t0 calculating the thickness of the remaining bone in real time;

s3, T0 are displayed on the display in real time, and according to the T0 change condition, the average drilling speed of the current drill bit can be calculated:

C＝ΔT0/ΔTOF (3)

in the formula (3), Δ T0 is the distance change of the residual bone thickness T0 measured in two times, Δ TOF is the time difference between the two sides, and C is the drilling speed change rate of the two times;

s4, adjusting the drilling speed in real time according to the requirement, stopping drilling after the drill bit reaches the expected position, and calculating the drilling depth H1 by using the previous measurement result:

H1＝H0-T0 (4)

wherein H0 in formula (4) is the thickness of the bone in formula (1); t0 is the real-time calculation of the thickness of the remaining bone in equation (2).

Preferably, when T0 or C shows abnormality, the power member stops rotating or rotates reversely to unscrew the drill hole; and at the same time, the drill was stopped as it exited to the point of penetration of the bone surface, measured with an ultrasonic probe to verify H1,

H1＝TOF×V_A/2 (5)

in the formula (5), the speed of sound V_AThe TOF value is the time required for the echo generated by the drill bit tip and the bottom surface of the hole being drilled, for the speed of acoustic propagation of the ultrasound probe in the air or saline in the hole being drilled.

Due to the implementation of the technical scheme, compared with the prior art, the invention has the following advantages:

according to the invention, on one hand, accidental damage to the object to be drilled and the periphery caused by drilling through the object to be drilled can be avoided, and the drilling depth can be directly obtained, so that the drilling operation is directly facilitated; on the other hand, once the drilling is dislocated or deviated, the information receiving and processing module can intelligently control the power part to suddenly stop, and the intelligent drilling device is simple in structure and low in cost.

Drawings

Fig. 1 is a front view schematically showing an electric power tool according to embodiment 1;

FIG. 2 is a schematic diagram of the process of FIG. 1;

fig. 3 is a front view schematically showing the electric power tool of embodiment 2;

wherein: 1. a drill bit; 10. a drill stem; 100. a cable through hole; 11. a drill edge; 10a, drilling an end part; 10b, connecting the end portions; 2. a drill shank; 3. a power member; 4. an ultrasonic probe; 5. an information receiving and processing module; 50. a slip ring; 51. an ultrasonic excitation receiving module; 52. an information processing module; 53. a display; 54. a power supply module; 55. a wireless transmission module; 56. an external interface module; 6. a chuck; 7. a connector; 8. a coaxial cable.

Detailed Description

In order to make the aforementioned objects, features and advantages of the present invention comprehensible, embodiments accompanied with figures are described in detail below. In the following description, numerous specific details are set forth in order to provide a thorough understanding of the present invention. This invention may, however, be embodied in many different forms and should not be construed as limited to the embodiments set forth herein.

In the description of the present invention, it is to be understood that the terms "central," "longitudinal," "lateral," "length," "width," "thickness," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," "outer," "clockwise," "counterclockwise," "axial," "radial," "circumferential," and the like are used in the orientations and positional relationships indicated in the drawings for convenience in describing the invention and to simplify the description, and are not intended to indicate or imply that the referenced device or element must have a particular orientation, be constructed and operated in a particular orientation, and are not to be considered limiting of the invention.

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

In the present invention, unless otherwise expressly stated or limited, the terms "mounted," "connected," "secured," and the like are to be construed broadly and can, for example, be fixedly connected, detachably connected, or integrally formed; can be mechanically or electrically connected; they may be directly connected or indirectly connected through intervening media, or they may be connected internally or in any other suitable relationship, unless expressly stated otherwise. The specific meanings of the above terms in the present invention can be understood by those skilled in the art according to specific situations.

In the present invention, unless otherwise explicitly specified or limited, a first feature "on" or "under" a second feature may be directly contacted with the first and second features, or indirectly contacted with the first and second features through an intermediate. Also, a first feature "on," "over," and "above" a second feature may be directly or diagonally above the second feature, or may simply indicate that the first feature is at a higher level than the second feature. A first feature being "under," "below," and "beneath" a second feature may be directly under or obliquely under the first feature, or may simply mean that the first feature is at a lesser elevation than the second feature.

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

Example 1

As shown in fig. 1, the intelligent ultrasonic electric tool for drilling according to the present embodiment is a bone drill, and includes a drill bit 1, a drill handle 2, a power member 3, an ultrasonic probe 4 disposed inside the drill bit 1 and moving synchronously with the drill bit 1, and an information receiving and processing module 5 communicated with the ultrasonic probe 4.

Specifically, the drill bit 1 is arranged perpendicular to the drill shank 2 and is located at the left end of the drill shank 2.

The drill bit 1 comprises a drill rod 10 and a drill blade 11, wherein the drill rod 10 is provided with a drilling end part 10a and a connecting end part 10b, the ultrasonic probe 4 is positioned in the drilling end part 10a, and the connecting end part 10b is in transmission connection with the power member 3. This enables more accurate acquisition of the required data information.

Specifically, the drilling end 10a is tapered, and the ultrasonic probe 4 is located inside the apex of the taper.

In this case, a chuck 6 is provided at the left end of the drill shank 2, wherein the connecting end 10b is detachably connected to the chuck 6, and the chuck 6 is in driving connection with the power element 3. Under the arrangement of the chuck, the drill bit is conveniently and relatively connected with the power piece, so that the high-speed rotation of the drill bit is implemented.

The power member 3 is a conventional motor.

The ultrasonic probe 4 can acquire the thickness information of an object to be drilled and the drilled depth information of the drill bit 1, and the information receiving and processing module 5 is communicated with the power part 3 and controls the start and stop of the power part 3.

In this example, the working face of the ultrasonic probe 4 is oriented in the same direction as the drilling direction of the drilling end, and the operating frequency of the ultrasonic probe is between 20KHz and 10 MHz. The frequency is selected according to the fact that a low-frequency probe is selected if the penetration depth is required to be deep, and a high-frequency probe is selected if the requirement on the precision control of the drilling depth of the drill bit is high. The ultrasonic probe can be an ultrasonic probe of piezoelectric ceramics, piezoelectric single crystals and composite materials. Meanwhile, in order to improve the detection sensitivity and the signal-to-noise ratio of the probe, an impedance matching circuit, a miniature front signal amplifying circuit and the like can be arranged at the front end.

The information receiving and processing module 5 comprises a slip ring 50, an ultrasonic excitation receiving module 51, an information processing module 52, a display 53, a power supply module 54, a wireless transmission module 55 and an external interface module 56.

Specifically, the slip ring 50 is rotatably connected to the connection end portion 10b via the connector 7. The connector 7 is mainly used for realizing connection with a slip ring joint in the drill handle and realizing transmission of high-voltage excitation and echo signals, the slip ring is connected with an ultrasonic probe in the drill bit through the connector, and the transducer can rotate along with the drill bit while a rear-end cable in the drill handle can be fixed. And a magnetic ring and other similar functional structures can be adopted for realizing related functions. And the cable at the other end of the slip ring is connected to the ultrasonic excitation receiving module.

In this example, a cable through hole 100 is further provided in the drill rod 10, and the slip ring 50 is extended from the connector 7, and the extended end portion is communicated with the ultrasonic probe 4 through a coaxial cable 8 provided in the cable through hole 100.

Meanwhile, the slip ring 50, the power member 3 and the display 53 are all located at the end where the drill bit 1 is located, and the power member 3 is located between the display 53 and the slip ring 50. Therefore, the shape of the electric tool is different from that of a conventional electric drill, and corresponding data or/and images can be displayed on the display when the drill handle is held by a hand to drill, so that the set drilling depth can be accurately implemented.

The ultrasonic excitation receiving module 51, the information processing module 52 and the power supply module 54 are arranged in the drill handle 2 side by side, and the wireless transmission module 55 and the external interface module 56 are arranged at the right end part of the drill handle 2 in an up-and-down manner. Therefore, the electric tool is reasonable in combination layout and proportion distribution, and saves labor when being held by hand.

Meanwhile, the ultrasonic excitation receiving module 51 mainly includes a high-voltage pulse excitation module, an ultrasonic echo receiving module, a detection envelope, data acquisition, TOF (Time of flight) detection, and the like, and has the main functions of exciting the ultrasonic probe in the drill bit to generate ultrasonic waves, and performing functions of filtering, gain amplification, envelope acquisition, TOF detection, data acquisition and transmission on the ultrasonic echo signals received by the ultrasonic probe.

The collected echo signals and TOF data can be analyzed and processed by the information processing module 52 and displayed by the display 53.

Referring to fig. 2, the implementation process of this embodiment is as follows:

s1, selecting a proper drill according to the required hole diameter, inserting the tail of the drill into the connector, fastening the drill by the adjustable chuck, vertically placing the top of the drill on the surface of the bone, starting the ultrasonic module, detecting the echo generated by the upper and lower surfaces of the bone, and obtaining the TOF values of the upper and lower surfaces, so as to obtain the final product

H0＝TOF×V_B/2 (1)

V in formula (1)_BIs the propagation velocity of the ultrasound in the bone; the TOF value is the time required by the echoes generated by the upper and lower surfaces of the bone; h0 is the thickness of the bone;

s2, starting the power piece, rotating the drill bit and drilling into the bone, wherein the residual thickness of the drilled hole satisfies the following formula:

T0＝TOF×V_B/2 (2)

v in formula (2)_BIs the propagation velocity of the ultrasound in the bone; the TOF value is the time required for the echo generated by the drill tip and the lower surface of the bone; t0 calculating the thickness of the remaining bone in real time;

s3, T0 are displayed on the display in real time, and according to the T0 change condition, the average drilling speed of the current drill bit can be calculated:

C＝ΔT0/ΔTOF (3)

in the formula (3), Δ T0 is the distance change of the residual bone thickness T0 measured in two times, Δ TOF is the time difference between the two sides, and C is the drilling speed change rate of the two times;

s4, adjusting the drilling speed in real time according to the requirement, stopping drilling after the drill bit reaches the expected position, and calculating the drilling depth H1 by using the previous measurement result:

H1＝H0-T0 (4)

wherein H0 in formula (4) is the thickness of the bone in formula (1); t0 is the real-time calculation of the thickness of the remaining bone in equation (2).

In this example, to verify that the H1 value was accurate, the drill was stopped as it exited to the point of penetration on the bone surface, measured with an ultrasonic probe to verify H1,

H1＝TOF×V_A/2 (5)

in the formula (5), the speed of sound V_AThe TOF value is the time required for the echo generated by the drill bit tip and the bottom surface of the hole being drilled, for the speed of acoustic propagation of the ultrasound probe in the air or saline in the hole being drilled.

Meanwhile, if an accident occurs during the drilling process, the bone is punctured, namely T0 or C is abnormal, the drill bit is braked emergently to stop or reversely rotate the drill bit, and the subsequent possible damage is prevented quickly.

Example 2

As shown in fig. 2, the bone drill of the present embodiment has substantially the same structure as that of embodiment 1, and the differences are as follows.

In this example, the ultrasonic probes 4 are distributed in the drilling end 10a in an array, and the information receiving and processing module 5 is arranged for real-time imaging according to data obtained by the plurality of ultrasonic probes 4. Therefore, in the drilling process, the detection of tissues and conditions around the side wall of the drill bit can be realized, the ultrasonic probes in the array can be placed on the side wall of the drill bit and connected with the ultrasonic excitation receiving module through the slip ring, and therefore real-time imaging is realized.

One of the plurality of ultrasonic probes 4 is located at the tip of the cone, and the rest are evenly distributed around the circumference of the cone.

Meanwhile, the data such as the echo signal and the TOF collected in this example are transmitted to the upper computer through the signal transmission line in the wireless module 55 or the interface module 56 for processing and displaying by the computing software. Thus, both the display 53 and the information processing module 52 may or may not be installed in this example.

In summary, the bone drill according to the above embodiments has the following advantages:

1. the miniature ultrasonic probe is arranged in the drill bit, so that the drilling speed and the drilling depth of the bone drill can be monitored in real time, a basis is provided for intraoperative operation, subsequent bone nail selection and the like, meanwhile, accidental injury to nerves and blood vessels caused by bone drilling is avoided, the operation is facilitated through real-time imaging, and the operation risk and time are greatly reduced;

2. the drill bit can be automatically stopped or reversely withdrawn by utilizing the detected drill bit position information (drilling depth), so that intelligent protection is realized;

3. the drilling machine can be used in medical bone drills, is also suitable for daily drilling and industrial precise drilling machines, and is high in practicability.

The present invention has been described in detail in order to enable those skilled in the art to understand the invention and to practice it, and it is not intended to limit the scope of the invention, and all equivalent changes and modifications made according to the spirit of the present invention should be covered by the present invention.

The present invention has been described in detail in order to enable those skilled in the art to understand the invention and to practice it, and it is not intended to limit the scope of the invention, and all equivalent changes and modifications made according to the spirit of the present invention should be covered by the present invention.