Operation power system

Abstract

The utility model relates to an operation power system, which is used for cutting bones during an operation, the power system comprises a rotary cutter, a first linkage piece, an abutting piece, a shell and a pressure sensor, the rotary cutter is used for rotatably cutting the bones, the first linkage piece is fixed on the rotary cutter, the abutting piece is arranged on the outer side of the rotary cutter, and the shell is arranged on the outer side of the shell. The shell is used for placing the rotary cutter; the pressure sensor is fixed on the shell; one of the first linkage piece and the abutting piece comprises a magnet, and the other one of the first linkage piece and the abutting piece comprises metal capable of being attracted by the magnet. The abutting piece is attracted by the first linkage piece and presses the pressure sensor in the axial direction of the rotary cutter. By adopting the scheme, the reading of the pressure sensor can be used for representing whether the cutting position of the rotary cutter is the bone or not, and when the rotary cutter cuts through the bone, data measured by the pressure sensor suddenly changes, so that the rotary cutter can be controlled to stop, soft tissues of a patient are prevented from being cut, and the patient is protected from being accidentally injured.

Description

Technical Field

[0001] This utility model relates to the technical field of surgical power systems, and in particular to a surgical power system. Background Technology

[0002] A surgical power system is a power tool system used in surgery. It provides high-speed rotating tools such as cutting tools and drills to assist surgeons in performing surgical procedures. The advantages of surgical power systems include:

[0003] 1. Improve surgical efficiency: Surgical power systems can provide high-speed rotating tools, thereby speeding up the operation and reducing the operation time.

[0004] 2. Improve surgical precision: Surgical power systems can provide precise control and operation, thereby improving surgical precision and reducing surgical risks.

[0005] 3. Reduce surgical trauma: Surgical power systems can provide minimally invasive surgical tools, thereby reducing surgical trauma and accelerating postoperative recovery.

[0006] However, surgical power systems also have some drawbacks. For example, the high-speed rotating tools in a surgical power system may damage human tissue, so they need to be used with caution. Traditional power systems lack active safety protection systems, and safety depends entirely on the surgeon's experience. Utility Model Content

[0007] Based on this, a surgical power system is provided to solve the problem in the prior art that relying solely on the doctor's experience makes it impossible to accurately determine the cutting position of the power system during surgery, which may lead to the easy cutting of the human body's soft tissue.

[0008] On the one hand, a surgical power system is provided for cutting bone during surgery, the power system comprising:

[0009] A rotary cutter, used for rotating and cutting bone;

[0010] The first linkage component is fixed on the rotating cutter.

[0011] An abutment member, wherein the abutment member is disposed on the outside of the rotating cutter;

[0012] A housing for holding the rotating cutter;

[0013] A pressure sensor, which is fixed to the housing;

[0014] In this embodiment, one of the first linkage member and the abutting member contains a magnet, and the other contains a metal that can be attracted by the magnet; when the first linkage member retracts axially with the rotating cutter, the abutting member is attracted by the first linkage member and presses the pressure sensor along the axial direction of the rotating cutter.

[0015] Based on the above technical solution, the present invention can be further improved as follows.

[0016] In one implementation, the outer periphery of the rotary cutter is provided with a mounting groove, and the first linkage is annular and fixed in the mounting groove.

[0017] In one implementation, the power system further includes:

[0018] An electric motor is used to drive the rotary cutter to rotate;

[0019] The outer shell includes communicating components:

[0020] The larger end is used to house the motor;

[0021] The smaller end is used to accommodate one end of the rotating cutter.

[0022] In one implementation, the abutment is a hollow ring structure that can be axially moved around the small end, and the pressure sensor is fixed on the transition step between the large end and the small end.

[0023] In one implementation, the power system further includes:

[0024] An elastic element is provided, which can be compressed axially. The two ends of the elastic element in the axial direction are respectively used to abut against the rotating cutter and the drive shaft of the motor. The rotating cutter and the drive shaft can move relative to each other in the axial direction.

[0025] In one implementation, the abutment further includes:

[0026] The second linkage component is fixed to the inner or outer wall of the abutment component, and the second linkage component is an iron ring structure.

[0027] In one implementation, the first linkage is a magnetic ring structure, and the radial dimension of the rotating cutter gradually decreases along the direction extending out of the housing.

[0028] Secondly, this utility model also provides a method of using a power system, applied to a surgical power system, the method of use including:

[0029] The pressure value measured by the pressure sensor when the rotary cutter is working is obtained;

[0030] A cutting position indication is generated based on the change in the pressure value;

[0031] The decision to stop the rotating cutter is based on the cutting position indication.

[0032] In one implementation, generating the cutting position indication based on the change in the pressure value includes:

[0033] Determine whether the pressure value has a sudden change;

[0034] If so, the cutting location indicates soft tissue;

[0035] If not, the cut location indicates bone.

[0036] The step of determining whether the rotating tool should be stopped based on the cutting position indication includes:

[0037] If the cutting location indicates soft tissue, the rotary cutter immediately stops.

[0038] If the cutting location is indicated as bone, the rotating blade maintains its current operating state.

[0039] Thirdly, this utility model also provides a noise reduction method for a power system, applied to a surgical power system, the noise reduction method including:

[0040] Acquire the acoustic signature characteristics of the motor during idling;

[0041] Based on the aforementioned voiceprint characteristics, a high-frequency micro-motion signal that can cancel it out is matched;

[0042] The high-frequency micro-motion signal is input into the control system of the motor.

[0043] The beneficial effects of this utility model are as follows: By configuring the first linkage member and the abutment member into a structure that moves in linkage via a magnet, when the first linkage member moves with the rotating cutter, since one end of the rotating cutter is in contact with the bone and cutting, the first linkage member is subjected to the abutment force of the bone and retracts within a certain range along the axial direction, thereby driving the abutment member to retract a certain amount along the axial direction and pressing the abutment member against the pressure sensor; that is, when the rotating cutter cuts the bone, due to the contact with the bone, the first linkage member retracts a certain amount along the axial direction, thereby driving the abutment member to retract axially and press against the pressure sensor, so that the pressure sensor is pressed against the pressure sensor when the rotating cutter is cutting. The bone segment always maintains a relatively stable reading. After the rotating blade cuts through the bone, it will come into contact with soft tissue. Since the rotating blade is no longer subjected to the same magnitude of reaction force as the bone, the abutment no longer maintains its original force against the pressure sensor, causing a sudden change in the pressure data measured by the pressure sensor. In summary, through this application, the reading of the pressure sensor can be used to characterize whether the cutting position of the rotating blade is bone. When the rotating blade cuts through the bone, the data measured by the pressure sensor changes abruptly, which can be used to control the rotating blade to stop, so as to avoid cutting the patient's soft tissue and thus protect the patient from accidental injury. Attached Figure Description

[0044] Figure 1 This is a schematic diagram of the surgical power system in one embodiment;

[0045] Figure 2 This is a flowchart illustrating the method of using the power system in another embodiment;

[0046] Figure 3 for Figure 2 A flowchart illustrating step S120;

[0047] Figure 4 for Figure 2 Flowchart of step S130

[0048] Figure 5 This is a flowchart illustrating a noise reduction method for a power system in another embodiment.

[0049] In the attached diagram, the components represented by each number are as follows:

[0050] 10 Rotary cutting tool; 20 First linkage component;

[0051] 30. Connecting component; 31. Second linkage component;

[0052] 40 Outer shell; 41 Large end; 42 Small end;

[0053] 50 Pressure sensor; 60 Motor; 70 Elastic component. Detailed Implementation

[0054] To make the objectives, technical solutions, and advantages of this application clearer, the following detailed description is provided in conjunction with the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are merely illustrative and not intended to limit the scope of this application.

[0055] It should be noted that the illustrations provided in this embodiment are only schematic representations of the basic concept of this utility model. Therefore, the drawings only show the components related to this utility model and are not drawn according to the actual number, shape and size of the components. In actual implementation, the form, quantity and proportion of each component can be arbitrarily changed, and the layout of the components may also be more complex.

[0056] The structures, proportions, sizes, etc., illustrated in the accompanying drawings of this specification are only for the purpose of assisting those skilled in the art in understanding and reading the content disclosed in the specification, and are not intended to limit the implementation conditions of this utility model. Therefore, they have no substantial technical significance. Any modifications to the structure, changes in the proportional relationships, or adjustments to the size, without affecting the effects and purposes that this utility model can produce, should still fall within the scope of the technical content disclosed in this utility model.

[0057] Example 1:

[0058] A surgical power system, see Figure 1 This device is used to cut bone during surgery. The power system includes a rotating cutter 10, a first linkage 20, an abutment 30, a housing 40, and a pressure sensor 50. The rotating cutter 10 is used to rotate and cut bone. The first linkage 20 is fixed to the rotating cutter 10. The abutment 30 is located on the outside of the rotating cutter 10. The housing 40 is used to hold the rotating cutter 10. The pressure sensor 50 is fixed to the housing 40. Among the first linkage 20 and the abutment 30, one contains a magnet, and the other contains a metal that can be attracted by the magnet. When the first linkage 20 retracts axially with the rotating cutter 10, the abutment 30 is attracted by the first linkage 20 and presses the pressure sensor 50 along the axial direction of the rotating cutter 10.

[0059] For the adoption of this solution, please refer to [link / reference]. Figure 1By configuring the first linkage 20 and the abutment 30 into a structure that moves in conjunction with a magnet, when the first linkage 20 moves with the rotating cutter 10 during cutting, since one end of the rotating cutter 10 is in contact with the bone and cutting, the first linkage 20 is subjected to the abutment force of the bone and retracts within a certain range along the axial direction. This causes the abutment 30 to retract along the axial direction to a certain extent, thus pressing the abutment 30 against the pressure sensor 50. That is, when the rotating cutter 10 cuts the bone, because it is in contact with the bone, the first linkage 20 retracts along the axial direction to a certain extent, thus causing the abutment 30 to retract axially and press against the pressure sensor 50, so that the pressure sensor 50 is pressed against the pressure sensor 50 when the rotating cutter 10 is cutting the bone. The head stage always has a relatively stable reading; after the rotating blade 10 cuts through the bone, the rotating blade 10 will come into contact with the soft tissue. Since the rotating blade 10 is no longer subjected to the same reaction force as the bone, the abutment 30 no longer maintains its original force against the pressure sensor 50, thus causing a sudden change in the pressure data measured by the pressure sensor 50. In summary, through this application, the reading of the pressure sensor 50 can be used to characterize whether the cutting position of the rotating blade 10 is bone. When the rotating blade 10 cuts through the bone, the data measured by the pressure sensor 50 changes abruptly, which can be used to control the rotating blade 10 to stop, so as to avoid cutting the patient's soft tissue and thus protect the patient from accidental injury.

[0060] For details, see Figure 1 The rotating cutter 10 and the first linkage 20 can be an integral structure. When they are an integral structure, the shape of the first linkage 20 can be a complete or partial ring. The rotating cutter 10 and the first linkage 20 are fixed together by a non-removable structure. Alternatively, the rotating cutter 10 and the first linkage 20 can be a detachable structure, such as by a tight fit but with an auxiliary disassembly hole, or by a detachable fit with bolts or other structures.

[0061] In some embodiments, see Figure 1 The rotating cutter 10 has a mounting groove on its outer periphery, and the first linkage 20 is annular and fixed in the mounting groove. In this way, by setting the mounting groove on the outer periphery of the rotating cutter 10, the installation and fixation of the first linkage 20 are facilitated, and the annular shape of the first linkage 20 improves the stability of the first linkage 20 after it rotates at high speed with the rotating cutter 10.

[0062] In some embodiments, see Figure 1The power system also includes a motor 60, which drives the rotating cutter 10 to rotate. The housing 40 includes a large end 41 and a small end 42 that are connected. The large end 41 is used to house the motor 60, and the small end 42 is used to accommodate one end of the rotating cutter 10. By setting the large end 41 and the small end 42, the overall length of the surgical power system enclosed by the housing 40 is increased, thereby improving the stability of the surgical power system. It also facilitates the integration of the structure within the housing 40, improving the integration level of the surgical power system. In addition, the small end 42 can also serve as a mounting and positioning point for the rotating cutter 10.

[0063] In some embodiments, see Figure 1 The abutment 30 has a hollow ring structure and is axially movable around the small end 42. The pressure sensor 50 is fixed on the transition step between the large end 41 and the small end 42. In this way, when the abutment 30 moves axially, the small end 42 plays a positioning role in axial movement. Since the pressure sensor 50 is fixed on the transition step between the large end 41 and the small end 42, when the abutment 30 moves axially along the small end 42 under the drive of the first linkage 20, it can press against the pressure sensor 50, thereby feeding back the cutting position of the rotating tool 10 through the measured pressure value.

[0064] In some embodiments, see Figure 1 The power system also includes an elastic element 70, which is compressible axially. The two ends of the elastic element 70 are respectively used to abut against the rotating cutter 10 and the drive shaft of the motor 60. The rotating cutter 10 and the drive shaft can move relative to each other axially. Thus, the elastic element 70 is used to apply an axial force to the rotating cutter 10. When the rotating cutter 10 is cutting bone, one end of the rotating cutter 10 abuts against the bone, and the other end of the rotating cutter 10 is subjected to the axial thrust of the elastic element 70. This causes the rotating cutter 10 to move under the axial thrust of the elastic element 70 after cutting through the bone, i.e., the rotating cutter 10 moves in the direction away from the shell. This causes the abutment 30 to be attracted by the magnetic force of the first linkage 20, thereby causing the abutment 30 to move away from the shell 40 or to loosen the abutment 30 from tight contact with the pressure sensor 50. This causes a sudden change in the pressure value measured by the pressure sensor 50. After the system detects the sudden change in pressure value, it controls the power system to stop operating, i.e., the rotating cutter 10 stops rotating, thus avoiding damage caused by excessive cutting of the patient's soft tissue.

[0065] For details, see Figure 1 The elastic element 70 is a component that can be axially compressed, such as a spring.

[0066] In some embodiments, see Figure 1The abutment 30 also includes a second linkage 31, which is fixed to the inner or outer wall of the abutment 30. The second linkage 31 is an iron ring structure. In this way, the second linkage 31 is provided so that the main body of the abutment 30 can be made of other materials, such as materials that are easy to slide and have low friction, thereby facilitating the movement of the abutment 30 as a whole along the outer periphery of the small end 42.

[0067] In some embodiments, the first linkage 20 is a magnetic ring structure, and the radial dimension of the rotating cutter 10 gradually decreases along the direction extending out of the outer shell 40. In this way, by reasonably setting the radial dimension of the rotating cutter 10, the diameter of the end of the rotating cutter 10 near the outer shell 40 is large, resulting in good working stability. The other end of the rotating cutter 10 is used to cut bone. By reducing the size of this end of the rotating cutter 10, the cutting accuracy of the rotating cutter 10 is improved.

[0068] In the embodiments, see Figure 1 In one embodiment of the surgical power system, when the rotating cutter 10 is idling, due to the thrust of the elastic member 70, the rotating cutter 10 will move axially to the position of the limiting clip. At this time, since the first linkage member 20 is fixed on the rotating cutter 10, the first linkage member 20 will drive the second linkage member 31 to move with the rotating cutter 10 to the appropriate position through magnetic force, thereby driving the abutment member 30 to move, so that there is a distance between the abutment member 30 and the pressure sensor 50, or so that the abutment member 30 no longer presses against the pressure sensor 50. The limiting clip is used to limit the maximum distance that the rotating cutter 10 moves axially away from the housing 40.

[0069] When the rotating cutter 10 cuts bone, since one end of the rotating cutter 10 abuts against and cuts the bone, and the other end of the rotating cutter 10 abuts against the elastic member 70, the forces on both ends of the rotating cutter 10 will be balanced. In contrast to the state of the rotating cutter 10 spinning freely, the rotating cutter 10 needs to move axially towards the large end 41 of the outer shell 40, thereby driving the first linkage member 20, the second linkage member 31 and the abutting member 30 to move towards the large end 41, so that the abutting member 30 presses against the pressure sensor 50, and the pressure value of the pressure sensor 50 is read by the controller.

[0070] When the rotating blade 10 cuts through the bone, one end of the rotating blade 10 no longer abuts against the bone but contacts the patient's soft tissue, while the other end of the rotating blade 10 remains abutting against the elastic element 70. This causes an imbalance of forces on both ends of the rotating blade 10 along the axial direction, pushing the rotating blade 10 a certain distance away from the large end 41 of the outer shell 40 by the elastic element 70. This causes the first linkage 20, the second linkage 31, and the abutting element 30 to move away from the large end 41, so that the abutting element 30 no longer presses against the pressure sensor 50. This causes a sudden change in the pressure value fed back by the pressure sensor 50 relative to the bone cutting, specifically a sudden decrease in pressure value. The controller then controls the rotating blade 10 to stop rotating, thus protecting the patient's soft tissue. In summary, at the moment the rotating blade 10 cuts through the bone, the pressure value measured by the pressure sensor 50 changes abruptly and tends to decrease. Therefore, the controller can adjust the rotation of the rotating blade 10 based on the pressure value feedback from the pressure sensor 50. If no sudden change in pressure value occurs, it means that the bone has not been cut through, and the controller maintains the working state of the rotating blade 10.

[0071] The pressure sensor 50 employs a piezoelectric element, a sensor that converts pressure into an electrical signal. Its working principle is based on the piezoelectric effect, where a change in charge distribution occurs when a piezoelectric material is subjected to pressure, thus generating an electrical signal. Piezoelectric elements are typically made of piezoelectric materials such as quartz and piezoelectric ceramics. When a piezoelectric element is subjected to pressure, it experiences a change in charge distribution, creating a voltage difference between the two electrodes, thereby generating an electrical signal. The output signal of a piezoelectric element is usually very weak and requires amplification and processing before it can be used in practical applications. Piezoelectric elements are widely used in pressure sensors 50, accelerometers, sound sensors, and other fields.

[0072] Example 2:

[0073] For a method of using a power system, see [link to relevant documentation]. Figure 2 It is used in surgical power systems, and its usage methods include:

[0074] Step S110: Obtain the pressure value measured by the pressure sensor when the rotating tool is working.

[0075] In some specific implementations, the pressure value measured by a pressure sensor is used to provide feedback on the working position of the rotary tool in the axial direction, thereby providing feedback on the working status of the rotary tool.

[0076] Step S120: Generate a cutting position indication based on the change in pressure value.

[0077] In some specific implementations, the trend of changes in the feedback pressure value is used to determine whether the rotating cutter is cutting bone or soft tissue.

[0078] Step S130: Determine whether the rotating tool should stop based on the cutting position indicator.

[0079] In some specific implementations, after determining the specific cutting position of the rotating blade, such as cutting bone or soft tissue, the rotating blade can be controlled to continue working through a pre-set program.

[0080] In some embodiments, see Figure 3 In step S120, generating a cutting position indication based on changes in pressure value includes:

[0081] Step S121: Determine if the pressure value changes abruptly;

[0082] Step S122: If yes, the cutting location is indicated as soft tissue;

[0083] Step S123: If not, the cutting location is indicated as bone.

[0084] In some specific implementations, the pressure value measured by the pressure sensor is used to determine whether the pressure value has changed. If the pressure value changes abruptly, the cutting location is determined to be soft tissue; if the pressure value does not change abruptly, the cutting location is determined to be bone.

[0085] See Figure 4 In step S130, determining whether the rotating tool should stop based on the cutting position indication includes:

[0086] Step S131: If the cutting position indicator is soft tissue, the rotating cutter will stop immediately;

[0087] Step S132: If the cutting position is bone, rotate the cutter to maintain the current working state.

[0088] In some specific implementations, the cutting position of the rotary cutter is characterized by the cutting position indicator, thereby determining whether the rotary cutter should stop or maintain its current working state. Specifically, when the cutting position indicator is soft tissue, it means that the bone has been cut through, and the rotary cutter stops immediately; when the cutting position indicator is bone, it means that the bone has not been cut through, and the rotary cutter maintains its current working state and continues cutting.

[0089] Example 3:

[0090] In application, motors often generate greater noise when moving at high speeds. Active noise reduction can be achieved by injecting specific high-frequency micro-motions into the motor drive. By understanding the detailed acoustic characteristics of each motor, most of the noise can be eliminated. Based on the unique "acoustic pattern" of each motor, A1 uses sensors and algorithms to calibrate the minute differences between each drive motor, more efficiently reducing motor noise. This achieves the effect of noise elimination and reduced motor vibration.

[0091] To find the corresponding specific high-frequency micro-motion, the following method is proposed:

[0092] A noise reduction method for a dynamic system, see [link to relevant documentation] Figure 5 Noise reduction methods used in surgical power systems include:

[0093] Step S210: Obtain the acoustic signature characteristics of the motor during idling;

[0094] Step S220: Match a high-frequency micro-motion signal that can cancel out the voiceprint characteristics;

[0095] Step S230: Input the high-frequency micro-motion signal into the motor control system.

[0096] In some specific implementations, the acoustic signature of the motor is acquired when the motor is idling, and a corresponding high-frequency micro-motion signal is matched with the acoustic signature. The high-frequency micro-motion signal is then used to cancel the acoustic signature, thereby eliminating the vibration and noise of the motor when it passes through the acoustic signature, thus achieving an active noise reduction effect on the motor.

[0097] Specifically, in step S210, the acoustic signature characteristics of the motor during idling are obtained by: collecting acoustic signature characteristics through a pressure sensor. The pressure sensor is equipped with a ceramic voltage plate and is sensitive to vibration, thereby collecting accurate acoustic signature characteristics.

[0098] Specifically, piezoelectric ceramic sheets are materials that can convert mechanical vibrations into electrical energy. When a piezoelectric ceramic is subjected to external mechanical pressure or vibration, polarization occurs within it, creating a voltage difference between the two electrodes of the ceramic sheet—the piezoelectric effect. Utilizing this property, piezoelectric ceramics can be installed near a vibration source, generating electrical energy through the mechanical deformation caused by the vibration. This technology is called piezoelectric vibration energy harvesting, and it can convert vibration energy in the environment into electrical energy to power low-power devices.

[0099] In the description of this utility model, it should be understood that the terms "center", "longitudinal", "transverse", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", "axial", "radial", "circumferential", etc., indicating the orientation or positional relationship are based on the orientation or positional relationship shown in the accompanying drawings, and are only for the convenience of describing this utility model and simplifying the description, and are not intended to indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of this utility model.

[0100] Furthermore, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of indicated technical features. Thus, a feature defined as "first" or "second" may explicitly or implicitly include at least one of that feature. In the description of this utility model, "a plurality of" means at least two, such as two, three, etc., unless otherwise explicitly specified.

[0101] In this utility model, unless otherwise explicitly specified and limited, the terms "installation," "connection," "joining," and "fixing," etc., should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral part; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; they can refer to the internal communication of two components or the interaction between two components, unless otherwise explicitly limited. Those skilled in the art can understand the specific meaning of the above terms in this utility model according to the specific circumstances.

[0102] In this utility model, unless otherwise explicitly specified and limited, "above" or "below" the second feature can mean that the first feature is in direct contact with the second feature, or that the first feature is in indirect contact with the second feature through an intermediate medium. Furthermore, "above," "on top of," and "over" the second feature can mean that the first feature is directly above or diagonally above the second feature, or simply that the first feature is at a higher horizontal level than the second feature. "Below," "below," and "under" the second feature can mean that the first feature is directly below or diagonally below the second feature, or simply that the first feature is at a lower horizontal level than the second feature.

[0103] In the description of this specification, the references to terms such as "one embodiment," "some embodiments," "example," "specific example," or "some examples," etc., indicate that a specific feature, structure, material, or characteristic described in connection with that embodiment or example is included in at least one embodiment or example of the present invention. In this specification, the illustrative expressions of the above terms do not necessarily refer to the same embodiment or example. Furthermore, the specific features, structures, materials, or characteristics described may be combined in any suitable manner in one or more embodiments or examples. Moreover, without contradiction, those skilled in the art can combine and integrate the different embodiments or examples described in this specification, as well as the features of different embodiments or examples.

[0104] The embodiments described above are merely illustrative of several implementation methods of this application, and while the descriptions are relatively specific and detailed, they should not be construed as limiting the scope of the utility model patent. It should be noted that those skilled in the art can make various modifications and improvements without departing from the concept of this application, and these all fall within the protection scope of this application. Therefore, the protection scope of this patent application should be determined by the appended claims.

Claims

1. A surgical power system for cutting bone during surgery, characterized in that, The surgical power system includes: Outer shell (40); A rotating cutter (10) has one end located in the housing (40), and the other end of the rotating cutter (10) is used to rotate and cut bone; A motor (60) is housed in the housing (40) and is used to drive the rotary cutter (10) to rotate; the motor (60) includes a drive shaft; The elastic element (70) is compressible along the axial direction. The two ends of the elastic element (70) abut against the rotating cutter (10) and the transmission shaft respectively along the axial direction. The rotating cutter (10) and the transmission shaft can move relative to each other along the axial direction. The first linkage (20) is fixed on the rotating cutter (10) and moves axially as the rotating cutter (10) retracts or extends axially. Abutting member (30) is axially movable and sleeved on the outside of the outer shell (40) and is correspondingly arranged with the first linkage member (20); A pressure sensor (50) is fixed to the housing (40); In the first linkage (20) and the abutment (30), one contains a magnet and the other contains a metal that can be attracted by the magnet; when the first linkage (20) retracts axially with the rotating cutter (10), the abutment (30) is attracted by the first linkage (20) and presses the pressure sensor (50) along the axial direction of the rotating cutter (10).

2. The surgical power system according to claim 1, characterized in that, The outer periphery of the rotating cutter (10) is provided with a mounting groove, and the first linkage (20) is annular and fixed in the mounting groove.

3. The surgical power system according to claim 1, characterized in that, The surgical power system also includes: The outer casing (40) includes a connected: The large end (41) is used to place the motor (60); The small end (42) is used to accommodate one end of the rotating cutter (10); The radial diameter of the larger end is greater than the radial diameter of the smaller end.

4. The surgical power system according to claim 3, characterized in that, The abutment (30) has a hollow ring structure and can move axially around the small end (42). The pressure sensor (50) is fixed on the transition step between the large end (41) and the small end (42).

5. The surgical power system according to claim 1, characterized in that, The abutment (30) includes: The second linkage (31) is fixed to the inner or outer wall of the abutment (30), and the second linkage (31) is an iron ring structure.

6. The surgical power system according to claim 1, characterized in that, The first linkage (20) is a magnetic ring structure, and the radial dimension of the rotating cutter (10) gradually decreases along the direction extending out of the outer shell (40).

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