CN117084757A - A power system for removal of abnormal breast tissue - Google Patents

Abstract

The application relates to the technical field of power systems, and provides a power system for cutting abnormal tissues of mammary glands, which comprises the following components: the inner pipe circumferential motion power supply unit is used for being connected with the first output gear and driving the first output gear to supply circumferential motion power to the inner cutter pipe; the inner pipe linear motion power supply unit is used for being connected with the second output gear and driving the second output gear to supply linear motion power to the inner cutter pipe; the outer pipe circumferential motion power supply unit is used for linking the third output gear with the first output gear when the outer cutter pipe needs to do circumferential motion, and clutching the third output gear with the first output gear when the outer cutter pipe does not need to do circumferential motion. The three movements of the puncture needles are controlled by adopting two driving motors, so that the reliability of the mammary gland abnormal tissue excision system is improved, and the cost, weight and assembly difficulty of the product are greatly reduced. Provides development direction for the light weight and miniaturization of the system, and can generate remarkable social benefit.

Description

A power system for removal of abnormal breast tissue

Technical field

The present invention relates to the technical field of power systems, and in particular, to a power system for resection of abnormal breast tissue.

Background technique

The "Vacuum-assisted Breast Biopsy System" is a medical device used for biopsy or removal of breast tissue. This system is commonly used to detect and diagnose breast abnormalities such as cysts, lumps, or other suspicious lesions. Here are some key information about vacuum-assisted rotational breast ablation systems:

Working principle: The vacuum-assisted breast rotation system introduces a puncture needle into the breast tissue under the guidance of a doctor, and then uses vacuum suction to help sample or remove tissue samples. This system can provide more precise tissue samples, helping to accurately diagnose breast problems.

Indications: This system is typically used to biopsy abnormalities or suspicious lesions in the breast. Doctors can obtain tissue samples this way, which can then be sent to a laboratory for further pathology examination to determine whether cancer or other diseases are present.

Advantages: Vacuum-assisted rotational breast ablation systems offer many advantages over traditional surgical removal methods, including less trauma, shorter recovery time, and fewer complications.

Postoperative care: After surgery, patients may experience mild discomfort but usually recover quickly. Doctors often advise patients to follow specific care instructions, including avoiding strenuous exercise and taking medications as directed.

In summary, the vacuum-assisted rotational breast ablation system is a modern medical tool used to help doctors obtain breast tissue samples for diagnosis and treatment of breast problems. This method is generally non-invasive, comfortable for the patient, and can provide accurate diagnostic results.

Vacuum-assisted breast rotational resection systems are often used to remove abnormal breast tissue under the guidance of B-ultrasound images. Existing products usually have a power system composed of three motors that drive three driven gears on the disposable breast rotational cutting puncture needle. Then, the circumferential movement of the outer cutter tube, the axial linear translational movement and the circumferential rotational movement of the inner cutter tube are realized, thereby achieving tissue resection. As the key execution driving component of rotary cutting products, the power system's movement accuracy is related to the effectiveness of the surgery and the safety of the patient. Therefore, the drive motors used in existing products are all high-precision small motors. High-precision small motors are not only expensive and bring cost problems to hospitals, but also come with a certain failure rate due to their high complexity. At the same time, under the premise that the technology level is equivalent, the weight of the power system mainly depends on the motor. The more motors, the heavier the drive handle. The more motors there are, the more control wire harnesses there are, the more space the wire harness wiring takes up, and the larger the power system, which is not conducive to the miniaturization and lightweight development of today's medical devices.

The motor that drives the movement of the outer blade of the puncture needle in the existing rotary cutting system mainly plays two roles: on the one hand, it calibrates the circumferential position of the puncture needle during the initial assembly stage of the puncture needle and adjusts the angle of the knife groove during surgery; The first aspect is to lock the circumferential position of the outer knife tube during the sampling stage. During the sampling process, the two motors that control the axial and circumferential movements of the inner knife tube transmit torque to the motor that controls the outer tube through the driven structure of the puncture needle. The outer tube control motor has to bear the stress of the other two motors for a long time. The sum of the torques is prone to failure, which is also the most prone problem of traditional three-motor rotary cutting systems.

Contents of the invention

In response to the above problems, the purpose of the present invention is to provide a power system for abnormal breast tissue resection, which uses two drive motors to control three movements of the puncture needle, improves the reliability of the abnormal breast tissue resection system, and greatly reduces the product cost. cost, weight and assembly difficulty. Providing a development direction for lightweighting and miniaturization of the system will produce significant social benefits.

The above-mentioned invention objects of the present invention are achieved through the following technical solutions:

A power system for the resection of abnormal breast tissue, including: an inner knife tube circumferential motion power module, an inner knife tube linear motion power module, and an outer knife tube circumferential motion power module;

The inner cutter tube circumferential motion power module includes an inner tube circumferential motion power supply unit and a first output gear. The inner tube circumferential motion power supply unit is used to connect with the first output gear and drive the third output gear. An output gear provides circumferential motion power to the inner cutter tube;

The inner cutter tube linear motion power module includes an inner tube linear motion power supply unit and a second output gear. The inner tube linear motion power supply unit is used to connect with the second output gear and drive the second output gear. Providing linear motion power to the inner cutter tube;

The outer cutter tube circumferential motion power module includes an outer tube circumferential motion power supply unit and a third output gear. The outer tube circumferential motion power supply unit is used to provide the outer cutter tube with circumferential motion when the outer cutter tube needs to move circumferentially. The third output gear is linked with the first output gear, and the third output gear moves synchronously with the first output gear. When the outer cutter tube does not need to make circumferential movement, the third output gear The gear is clutched to the first output gear, and the third output gear does not move synchronously with the first output gear.

Further, the inner tube circumferential movement power supply unit includes a circumferential movement control motor, a first circumferential movement gear, a second circumferential movement gear, a third circumferential movement gear, a first circumferential movement shaft and a second circumferential movement gear. circumferential axis of motion;

The output shaft of the circumferential motion control motor and the second circumferential motion shaft are connected through a first circumferential motion gear, the second circumferential motion gear meshes with the first circumferential motion gear, and the The second circumferential motion gear and the third circumferential motion gear are coaxially installed on the first circumferential motion shaft, and the third circumferential motion gear meshes with the first output gear.

Further, the inner tube linear motion power supply unit includes a linear motion control motor, a first linear motion gear, a second linear motion gear, a third linear motion gear, a first linear motion axis and a second linear motion axis;

The linear motion control motor and the second linear motion axis are connected through a first linear motion gear, the first linear motion gear meshes with the second linear motion gear, and the second linear motion gear is meshed with the second linear motion gear. The third linear motion gear is coaxially installed on the first linear motion shaft, and the third linear motion gear meshes with the second output gear.

Further, the outer tube circumferential motion power supply unit includes an electromagnet protective cover, an electromagnet, a motor mounting flange, an electromagnet mounting bracket, an electromagnet suction shaft, a locking plate, an elastic element and a first nut;

The lock plate is installed at one end of the gear box close to the third output gear;

After the electromagnet attraction shaft passes through the third output gear, the first output gear and the second output gear in sequence, an end of the electromagnet attraction shaft close to the second output gear Install the elastic element and the first nut in sequence, and install the electromagnet mounting bracket, the motor mounting flange, and the electromagnet in sequence on one end of the electromagnet attraction shaft close to the third output gear. Iron and said electromagnet protective cover;

A second nut is provided at the rear end of the electromagnet protective cover for fixing the electromagnet;

When the outer cutter tube needs to move in a circumferential direction, the electromagnet is powered off, and the electromagnet attraction shaft moves in a direction close to the first output gear due to the elastic action of the elastic element. The output gear is linked with the first output gear, and the third output gear moves synchronously with the first output gear;

When the outer cutter tube does not need to move circumferentially, the electromagnet is energized, and the electromagnet attracts the electromagnet to move axially away from the first output gear, turning the third output gear. The output gear is clutched to the first output gear, and the third output gear does not move synchronously with the first output gear.

Further, the first output gear, the second output gear and the third output gear are connected through the electromagnet attraction shaft. The surface of the electromagnet attraction shaft is smooth. When the first output gear , Smoothly slide inside the gear holes of the second output gear and the third output gear;

The inner right end of the gear bracket is in contact with the right end surface of the second output gear. The third output gear is provided with a cylindrical sinking step. The inner surface of the cylindrical sinking step is in contact with the electromagnet mounting bracket. Clearance fit on the outer cylindrical surface of the bracket;

The right end surface of the bracket of the electromagnet mounting bracket is clearance matched with the sunken step surface on the left side of the third output gear. A step shaft is provided on the left side of the electromagnet mounting bracket. The step shaft end face of the step shaft is in contact with the step shaft. The left end face of the bracket of the gear bracket fits;

The step shaft is provided with a step hole, and the step hole is fixed with the left end surface of the gear bracket through bolts to prevent the first output gear, the second output gear and the third output gear from being connected to each other. The output gear moves axially.

Further, a conical hole surface is provided on the right side of the electromagnet mounting bracket, and a conical boss is provided on the left side of the lock plate. The conical surface of the conical boss is consistent with the taper of the conical hole surface. ;

A cylindrical sink hole is provided on the left side of the electromagnet mounting bracket. The inner surface of the cylindrical sink hole matches the outer cylindrical surface of the magnet of the electromagnet. The cylindrical hole on the left side of the bracket of the electromagnet mounting bracket The inner step surface is attached to the right end surface of the magnet of the electromagnet;

The magnet right end surface of the electromagnet, the lock disk left end surface of the lock disk, the conical surface of the conical boss, and the conical hole surface are friction surfaces with preset friction;

The depth of the cylindrical hole on the left side of the lock plate is greater than the thickness of the step shaft at one end of the electromagnet attraction shaft close to the third output gear. The diameter of the step is larger than the diameter of the middle through hole of the lock plate.

Further, when the electromagnet is energized, the electromagnet attracts the electromagnet and the axis moves in a direction away from the first output gear, and the magnet right end surface of the electromagnet and the lock The left end surface of the locking disk of the disk is in contact with each other, the conical surface of the conical boss is in contact with the conical hole surface, and the pin extending from the right side of the locking disk is out of all the parts of the first output gear. The pin hole, the third output gear is disengaged from the first output gear;

The third output gear is affected by the friction between the right end surface of the magnet of the electromagnet and the left end surface of the lock disk, as well as the conical surface of the conical boss and the cone. Due to the friction between the hole surfaces, it cannot rotate and is in a locked state;

At this time, the elastic element is in a compressed state, and the attraction force of the electromagnet is greater than the maximum elastic force of the elastic element.

Further, when the electromagnet is powered off, the electromagnet attraction shaft moves in a direction closer to the first output gear due to the elasticity of the elastic element, and the right end of the left conical step of the lock plate The surface fits with the left sunken step surface of the third output gear;

At this time, the magnet right end surface of the electromagnet and the lock disk left end surface of the lock disk, the conical surface of the conical boss, and the conical hole surface are no longer in contact and are in a disengaged state. , the lock plate rotates smoothly and is in motion;

The pin extending from the right side of the lock plate is inserted into the pin hole of the first output gear, and the third output gear and the first gear are merged into a whole body and are in a linkage state.

Further, the pins protruding from the right side of the lock plate are evenly distributed in the circumference, and the total number of the pins is greater than the number of teeth of the first output gear;

The pin shaft on the lock plate and the pin hole on the first output gear adopt any shape including cylindrical and conical shapes.

Further, when the electromagnet is energized to attract the lock disc and the electromagnet to attract the shaft, the friction between the magnet right end surface of the electromagnet and the lock disc left end surface of the lock disc The sum of the force plus the friction force between the conical surface of the conical boss and the conical hole surface is greater than the torsion force of the circumferential motion control motor and the linear motion control motor on the third output gear. .

Compared with the prior art, the present invention includes at least one of the following beneficial effects:

(1) By providing a power system for excision of abnormal breast tissue, including: an inner knife tube circumferential motion power module, an inner knife tube linear motion power module, and an outer knife tube circumferential motion power module; the inner knife tube The circumferential motion power module includes an inner tube circumferential motion power supply unit and a first output gear. The inner tube circumferential motion power supply unit is used to connect with the first output gear and drive the first output gear inward. The cutter tube provides circumferential motion power; the inner cutter tube linear motion power module includes an inner tube linear motion power supply unit and a second output gear, and the inner tube linear motion power supply unit is used to connect with the second output gear , driving the second output gear to provide linear motion power to the inner cutter tube; the outer cutter tube circumferential motion power module includes an outer tube circumferential motion power supply unit and a third output gear, and the outer tube circumferential motion power module The motion power supply unit is used to link the third output gear with the first output gear when the outer cutter tube needs to move in a circumferential direction, and the third output gear moves synchronously with the first output gear. When the outer cutter tube does not need to move in a circumferential direction, the third output gear is coupled to the first output gear, and the third output gear does not move synchronously with the first output gear. The above technical solution uses two drive motors to control the three movements of the puncture needle, which improves the reliability of the abnormal breast tissue removal system and greatly reduces the cost, weight and assembly difficulty of the product.

(2) The power system provided by the present invention for resection of abnormal breast tissue provides a development direction for lightweighting and miniaturization of vacuum-assisted breast rotational resection systems, and will produce significant social benefits.

Description of the drawings

Figure 1 is a top view of the power system for resection of abnormal breast tissue according to the present invention;

Figure 2 is a front view of the power system for resection of abnormal breast tissue according to the present invention;

Figure 3 is a rear view of the power system for resection of abnormal breast tissue according to the present invention;

Figure 4 is an exploded view of the circumferential movement power module of the outer cutter tube of the present invention;

Figure 5 is a cross-sectional view of the A-A perspective in the clutch state in Figure 1 of the present invention;

Figure 6 is a cross-sectional view of the A-A viewing angle linkage state in Figure 1 of the present invention;

Figure 7 is a partial enlarged view of Figure 5 of the present invention.

Reference signs

1000: Inner cutter tube circumferential motion power module; 2000: Inner cutter tube linear motion power module; 3000: Outer cutter tube circumferential motion power module; 4000: Gear box; 5000: Gear bracket;

1100: inner tube circumferential motion power supply unit; 1200: first output gear; 1300: first input gear;

1110: Circular motion control motor; 1120: First circumferential motion gear; 1130: Second circumferential motion gear; 1140: Third circumferential motion gear; 1150: First circumferential motion axis; 1160: Second circumferential motion gear axis of motion;

1201: Pin hole;

2100: Inner tube linear motion power supply unit; 2200: Second output gear; 2300: Second input gear;

2110: linear motion control motor; 2120: first linear motion gear; 2130: second linear motion gear; 2140: third linear motion gear; 2150: first linear motion axis; 2160: second linear motion axis;

3100: Outer tube circumferential motion power supply unit; 3200: Third output gear; 3300: Third input gear;

3110: Electromagnet protective cover; 3120: Electromagnet; 3130: Motor mounting flange; 3140: Electromagnet mounting bracket; 3150: Electromagnet attraction shaft; 3160: Locking plate; 3170: Elastic element; 3180: First nut;

3121: Magnet outer cylindrical surface; 3122: Magnet right end surface;

3141: Outer cylindrical surface of the bracket; 3142: Right end face of the bracket; 3143: Step shaft end face; 3144: Conical hole surface; 3145: Inner surface of the cylindrical sink hole; 3146: Step inside the cylindrical hole on the left side of the bracket;

3161: conical boss; 3162: left end face of lock plate; 3163: pin; 3164: right end face of left conical step;

3201: The inner surface of the cylindrical sunken step; 3202: The left sunken step surface;

5001: The left end face of the bracket.

Detailed ways

In order to make the purpose, technical solutions and advantages of the embodiments of the present application clearer, the technical solutions in the embodiments of the present application will be clearly and completely described below in conjunction with the drawings in the embodiments of the present application. Obviously, the described embodiments These are part of the embodiments of this application, but not all of them. Based on the embodiments in this application, all other embodiments obtained by those of ordinary skill in the art without creative efforts fall within the scope of protection of this application.

Those skilled in the art will understand that, unless expressly stated otherwise, the singular forms "a", "an", "the" and "the" used herein may also include the plural form. It should be further understood that the word "comprising" used in the description of the present invention refers to the presence of stated features, integers, steps, operations, elements and/or components, but does not exclude the presence or addition of one or more other features, Integers, steps, operations, elements, components and/or groups thereof.

The power system of the rotational cutting system drives the breast rotational cutting puncture needle to perform three main movements: driving the outer knife tube to make circumferential motion around its axis, driving the inner knife tube to make reciprocating linear motion in its direction, and driving the inner knife tube to make circumferential motion around its axis. toward rotational movement. Among them, what is directly related to the surgical cutting action is the movement of the inner knife tube, while the movement of the outer knife tube is mainly used when adjusting the direction of the knife groove and calibrating tumor markers, and is not operated during the cutting operation. Therefore, considering that when the outer knife tube moves (during calibration or when adjusting the knife groove angle, the rotation angle of the outer knife tube is the same as the rotation angle of the inner knife tube), the gear that drives the inner knife tube to rotate around the axis and the gear that drives the outer knife tube to rotate around it The gear linkage of the axis of rotation. When the movement of the outer cutter tube is not required, the two gears are separated by energizing the high-energy electromagnet, thereby realizing dual motors to control the movement of three gears.

First embodiment

As shown in Figures 1-3, this embodiment provides a power system for abnormal breast tissue resection, including: an inner knife tube circumferential motion power module 1000, an inner knife tube linear motion power module 2000, an outer knife tube circumferential motion Toward motion power module 3000;

The inner cutter tube circumferential motion power module 1000 includes an inner tube circumferential motion power supply unit 1100 and a first output gear 1200. The inner tube circumferential motion power supply unit 1100 is used to connect with the first output gear 1200. , driving the first output gear 1200 to provide circumferential motion power to the inner cutter tube;

The inner cutter tube linear motion power module 2000 includes an inner tube linear motion power supply unit 2100 and a second output gear 2200. The inner tube linear motion power supply unit 2100 is used to connect with the second output gear 2200 to drive all The second output gear 2200 provides linear motion power to the inner cutter tube;

The outer cutter tube circumferential movement power module 3000 includes an outer tube circumferential movement power supply unit 3100 and a third output gear 3200. The outer tube circumferential movement power supply unit 3100 is used when the outer cutter tube needs to perform circumferential movement. When, the third output gear 3200 is linked with the first output gear 1200, and the third output gear 3200 moves synchronously with the first output gear 1200, when the outer cutter tube does not need to make circumferential movement When the third output gear 3200 is coupled with the first output gear 1200 , the third output gear 3200 does not move synchronously with the first output gear 1200 .

Among them, the first output gear 1200, which is the output gear of the three power modules of the power system, meshes with the first input gear 1300 of the disposable breast rotation and puncture needle, and the second output gear 2200 meshes with the third of the disposable breast rotation and puncture needle. The input gear 2300 meshes, and the third output gear 3200 meshes with the third input gear 3300 of the disposable breast rotation puncture needle to provide circumferential motion power to the inner knife tube of the puncture needle and linear motion to the inner knife tube of the puncture needle. Movement power provides circumferential movement power to the outer blade tube of the puncture needle.

Specifically, in this embodiment, the main invention of the present invention is to use two drive motors including a circumferential motion control motor 1110 and a linear motion control motor 2110 instead of three drive motors in the prior art. There are three ways of movement of the outer knife tube and the inner knife tube of the puncture needle. For the circumferential movement of the outer cutter tube and the inner cutter tube, the first output gear is realized through the cooperation of the electromagnet 3120, the elastic element 3170 and the electromagnet attraction shaft 3150 in the outer tube circumferential movement power supply unit 3100. 1200 and the clutch or linkage of the third output gear 3200. That is, when the outer cutter tube needs to move in a circumferential direction, the electromagnet 3120 is powered off, and the electromagnet attraction shaft 3150 is moved in a direction close to the first output gear 1200 by the elastic action of the elastic element 3170 Movement, the third output gear 3200 is linked with the first output gear 1200, and the third output gear 3200 moves synchronously with the first output gear 1200; when the outer cutter tube does not need to make circumferential movement , the electromagnet 3120 is energized, the electromagnet 3120 attracts the electromagnet attraction shaft 3150 and moves in a direction away from the first output gear 1200, connecting the third output gear 3200 with the first output gear 1200. The gear 1200 is clutched, and the third output gear 3200 does not move synchronously with the first output gear 1200 .

The specific structure of the power system of the present invention is described in detail below:

The inner tube circumferential motion power supply unit 1100 includes a circumferential motion control motor 1110, a first circumferential motion gear 1120, a second circumferential motion gear 1130, a third circumferential motion gear 1140, and a first circumferential motion shaft 1150. and a second circumferential motion shaft 1160; the output shaft of the circumferential motion control motor 1110 and the second circumferential motion shaft 1160 are connected through a first circumferential motion gear 1120, and the second circumferential motion gear 1130 Engaging with the first circumferential motion gear 1120, the second circumferential motion gear 1130 and the third circumferential motion gear 1140 are coaxially installed on the first circumferential motion shaft 1150. The circumferential motion gear 1140 is meshed with the first output gear 1200 .

The inner tube linear motion power supply unit 2100 includes a linear motion control motor 2110, a first linear motion gear 2120, a second linear motion gear 2130, a third linear motion gear 2140, a first linear motion axis 2150 and a second linear motion gear. Motion shaft 2160; the linear motion control motor 2110 and the second linear motion axis 2160 are connected through the first linear motion gear 2120, and the first linear motion gear 2120 meshes with the second linear motion gear 2130, The second linear motion gear 2130 and the third linear motion gear 2140 are coaxially installed on the first linear motion shaft 2150 , and the third linear motion gear 2140 meshes with the second output gear 2200 .

It should be noted that all the above gears have gaps between them and are smooth structures.

As shown in Figure 4, the outer tube circumferential motion power supply unit 3100 includes an electromagnet protective cover 3100, an electromagnet 3120, a motor mounting flange 3130, an electromagnet mounting bracket 3140, an electromagnet attraction shaft 3150, and a lock plate 3170. , elastic element 3180 and first nut 3190; the lock plate 3160 is installed at one end of the gear box 4000 close to the third output gear 3200; the electromagnet attraction shaft 3150 passes through the third output gear 3200 in turn After the first output gear 1200 and the second output gear 2200, the elastic element 3170 and the first output gear 2200 are sequentially installed on one end of the electromagnet attraction shaft 3150 close to the second output gear 2200. Nut 3180, the electromagnet mounting bracket 3140, the motor mounting flange 3130, the electromagnet 3120 and the electromagnetic Iron protective cover 3110; a second nut is provided at the rear end of the electromagnet protective cover 3110 for fixing the electromagnet 3120;

When the outer cutter tube needs to move in a circumferential direction, the electromagnet 3120 is powered off, and the electromagnet attraction shaft 3150 moves in a direction close to the first output gear 1200 due to the elastic effect of the elastic element 3170. The third output gear 3200 is linked with the first output gear 1200, and the third output gear 3200 moves synchronously with the first output gear 1200; when the outer cutter tube does not need to make circumferential movement, the When the electromagnet 3120 is energized, the electromagnet 3120 attracts the electromagnet attraction shaft 3150 and moves in a direction away from the first output gear 1200, connecting the third output gear 3200 with the first output gear 1200. When the clutch is engaged, the third output gear 3200 does not move synchronously with the first output gear 1200 .

Further, as shown in Figure 7, the first output gear 1200, the second output gear 2200 and the third output gear 3200 are connected through the electromagnet attraction shaft 3150. The electromagnet attraction shaft 3150 has a smooth surface and can slide smoothly in the gear holes of the first output gear 1200 , the second output gear 2200 and the third output gear 3200 . The inner right end of the gear bracket 5000 is in contact with the right end surface of the second output gear 2200. A cylindrical sinking step is provided on the left side of the third output gear 3200. The inner surface 3201 of the cylindrical sinking step is in contact with the right end surface of the second output gear 2200. The outer cylindrical surface 3141 of the electromagnet mounting bracket 3140 has a clearance fit. The right end surface 3142 of the electromagnet mounting bracket 3140 is in clearance fit with the sunken step surface 3202 on the left side of the third output gear 3200. A step shaft is provided on the left side of the electromagnet mounting bracket 3140. The steps of the step shaft The shaft end face 3143 fits the left side end face 5001 of the gear bracket 5000; the step shaft is provided with a step hole, and the step hole is fixed with the bracket left end face 5001 of the gear bracket 5000 by bolts , preventing the first output gear 1200, the second output gear 2200 and the third output gear 3200 from axially moving in series.

As shown in Figure 5-7, the electromagnet mounting bracket 3140 is provided with a conical hole surface 3144 on the right side, and the left side of the lock plate 3160 is provided with a conical boss 3161. The conical surface of the conical boss 3161 The taper of the conical hole surface 3144 is consistent, and the friction surface between the conical surface of the conical boss 3161 and the conical hole surface 3144 is made of a material with a high friction coefficient. The electromagnet mounting bracket 3140 is provided with a cylindrical sinking hole on the left side. The inner surface 3145 of the cylindrical sinking hole matches the magnet outer cylindrical surface 3121 of the electromagnet 3120. The electromagnet mounting bracket 3140 The step surface 3146 in the cylindrical hole on the left side of the bracket fits the magnet right end surface 3122 of the electromagnet 3120. The magnet right end surface 3122 of the electromagnet 3120, the lock disk left end surface 3162 of the lock disk 3160, the conical surface of the conical boss 3161, and the conical hole surface 3144 are preset friction forces. Friction surface, where the preset friction force is a relatively large friction force, so the friction surface is a friction surface with relatively large friction force; the depth of the cylindrical hole on the left side of the lock plate 3160 is greater than that of the electromagnet suction shaft 3150. The thickness of the step shaft at one end of the third output gear 3200 and the step diameter at one end of the electromagnet attraction shaft 3150 close to the third output gear 3200 are greater than the diameter of the middle through hole of the lock plate 3160 .

In this embodiment, the electric energy of the electromagnet 3210 is turned on and off to realize the reciprocating movement of the axis of the electromagnet attraction shaft 3150 to control the clutch and linkage of the third output gear 3200 and the first output gear 1200. The details are as follows:

As shown in FIG. 5 , when the electromagnet 3120 is energized, the electromagnet 3210 attracts the electromagnet attraction shaft 3150 and moves in a direction away from the first output gear 1200 . The right end surface 3122 of the magnet is in contact with the left end surface 3160 of the lock disc 3160, the conical surface of the conical boss 3161 is in contact with the conical hole surface 3144, and the right side of the lock disc 3160 is in contact with each other. The protruding pin 3163 protrudes from the pin hole 1201 of the first output gear 12, and the third output gear 3200 is disconnected from the first output gear 1200; the third output gear 3200 is affected by the electromagnetic The friction force between the magnet right end surface 3122 of the iron 3120 and the lock disk left end surface 3162 of the lock disk 3160, as well as the friction between the conical surface of the conical boss 3161 and the conical hole surface 3144 The friction force between the two parts prevents rotation and is in a locked state; at this time, the elastic element 3170 is in a compressed state, and the attraction force of the electromagnet 3120 is greater than the maximum elastic force of the elastic element 3170.

As shown in Figure 6, when the electromagnet 3120 is powered off, the electromagnet attraction shaft 3150 moves in a direction close to the first output gear 1200 due to the elastic action of the elastic element 3170, and the lock The left conical step right end surface 3164 of the disk 3160 is in contact with the left sunken step surface 3202 of the third output gear 3200; at this time, the magnet right end surface 3122 of the electromagnet 3120 is in contact with the lock disk. On the left end surface 3162 of the lock plate 3160, the conical surface of the conical boss 3161 and the conical hole surface 3144 are no longer in contact and are in a disengaged state. The lock plate 3160 rotates smoothly and is in a moving state; The pin 3163 protruding from the right side of the lock plate 3160 is inserted into the pin hole 1201 of the first output gear 1200. The third output gear 3200 and the first gear 1200 are merged into a whole. Linkage status.

Furthermore, the pins 3163 protruding from the right side of the lock plate 3160 are evenly distributed around the circumference. The total number of the pins 3163 is greater than the number of teeth of the first output gear 1200. The more the total number of pins 3163, the better the accuracy. high. The pin shaft 3163 on the lock plate 3160 and the pin hole 1201 on the first output gear 1200 adopt any shape including cylindrical and conical shapes.

It should be noted that all the above gears, nuts and elastic components 3170 are made of non-magnetic materials, and the locking disc 3160 and the electromagnet attraction shaft 3150 are made of strong magnetic materials.

Further, when the electromagnet 3120 is energized to attract the lock plate 3160 and the electromagnet axis 3150, the magnet right end surface 3122 of the electromagnet 3120 and the lock plate left side of the lock plate 3160 The friction between the side end surfaces 3162 plus the friction between the conical surface of the conical boss 3161 and the conical hole surface 3144 is greater than the circumferential motion control motor 1110 and the linear motion control. The torque exerted by the motor 2110 on the third output gear 3200.

The above are only preferred embodiments of the present invention. The protection scope of the present invention is not limited to the above-mentioned embodiments. All technical solutions that fall under the idea of the present invention belong to the protection scope of the present invention. It should be pointed out that for those of ordinary skill in the art, several improvements and modifications may be made without departing from the principles of the present invention, and these improvements and modifications should also be regarded as the protection scope of the present invention.

The technical features of the above-described embodiments can be combined in any way. To simplify the description, not all possible combinations of the technical features in the above-described embodiments are described. However, as long as there is no contradiction in the combination of these technical features, All should be considered to be within the scope of this manual.

Claims (10)

1. A power system for the resection of abnormal breast tissue, characterized in that it includes: an inner knife tube circumferential motion power module, an inner knife tube linear motion power module, and an outer knife tube circumferential motion power module; The inner cutter tube circumferential motion power module includes an inner tube circumferential motion power supply unit and a first output gear. The inner tube circumferential motion power supply unit is used to connect with the first output gear and drive the third output gear. An output gear provides circumferential motion power to the inner cutter tube; The inner cutter tube linear motion power module includes an inner tube linear motion power supply unit and a second output gear. The inner tube linear motion power supply unit is used to connect with the second output gear and drive the second output gear. Providing linear motion power to the inner cutter tube; The outer cutter tube circumferential motion power module includes an outer tube circumferential motion power supply unit and a third output gear. The outer tube circumferential motion power supply unit is used to provide the outer cutter tube with circumferential motion when the outer cutter tube needs to move circumferentially. The third output gear is linked with the first output gear, and the third output gear moves synchronously with the first output gear. When the outer cutter tube does not need to make circumferential movement, the third output gear The gear is clutched to the first output gear, and the third output gear does not move synchronously with the first output gear. 2. The power system for abnormal breast tissue resection according to claim 1, characterized in that the inner tube circumferential motion power supply unit includes a circumferential motion control motor, a first circumferential motion gear, a second circumferential motion gear, and a circumferential motion control motor. a circumferential motion gear, a third circumferential motion gear, a first circumferential motion axis and a second circumferential motion axis; The output shaft of the circumferential motion control motor and the second circumferential motion shaft are connected through a first circumferential motion gear, the second circumferential motion gear meshes with the first circumferential motion gear, and the The second circumferential motion gear and the third circumferential motion gear are coaxially installed on the first circumferential motion shaft, and the third circumferential motion gear meshes with the first output gear. 3. The power system for abnormal breast tissue resection according to claim 1, characterized in that the inner tube linear motion power supply unit includes a linear motion control motor, a first linear motion gear, and a second linear motion gear. , the third linear motion gear, the first linear motion axis and the second linear motion axis; The linear motion control motor and the second linear motion axis are connected through a first linear motion gear, the first linear motion gear meshes with the second linear motion gear, and the second linear motion gear is meshed with the second linear motion gear. The third linear motion gear is coaxially installed on the first linear motion shaft, and the third linear motion gear meshes with the second output gear. 4. The power system for abnormal breast tissue resection according to claim 1, characterized in that the outer tube circumferential motion power supply unit includes an electromagnet protective cover, an electromagnet, a motor mounting flange, and an electromagnet installation Bracket, electromagnet attraction shaft, locking disc, elastic element and first nut; The lock plate is installed at one end of the gear box close to the third output gear; After the electromagnet attraction shaft passes through the third output gear, the first output gear and the second output gear in sequence, an end of the electromagnet attraction shaft close to the second output gear Install the elastic element and the first nut in sequence, and install the electromagnet mounting bracket, the motor mounting flange, and the electromagnet in sequence on one end of the electromagnet attraction shaft close to the third output gear. Iron and said electromagnet protective cover; A second nut is provided at the rear end of the electromagnet protective cover for fixing the electromagnet; When the outer cutter tube needs to move in a circumferential direction, the electromagnet is powered off, and the electromagnet attraction shaft moves in a direction close to the first output gear due to the elastic action of the elastic element. The output gear is linked with the first output gear, and the third output gear moves synchronously with the first output gear; When the outer cutter tube does not need to move circumferentially, the electromagnet is energized, and the electromagnet attracts the electromagnet to move axially away from the first output gear, turning the third output gear. The output gear is clutched to the first output gear, and the third output gear does not move synchronously with the first output gear. 5. The power system for abnormal breast tissue resection according to claim 4, further comprising: The first output gear, the second output gear and the third output gear are connected through the electromagnet attraction shaft, and the electromagnet attraction shaft has a smooth surface. The second output gear and the third output gear slide smoothly in the gear holes; The inner right end of the gear bracket is in contact with the right end surface of the second output gear. The third output gear is provided with a cylindrical sinking step. The inner surface of the cylindrical sinking step is in contact with the electromagnet mounting bracket. Clearance fit on the outer cylindrical surface of the bracket; The right end surface of the bracket of the electromagnet mounting bracket is clearance matched with the sunken step surface on the left side of the third output gear. A step shaft is provided on the left side of the electromagnet mounting bracket. The step shaft end face of the step shaft is in contact with the step shaft. The left end face of the bracket of the gear bracket fits; The step shaft is provided with a step hole, and the step hole is fixed with the left end surface of the gear bracket through bolts to prevent the first output gear, the second output gear and the third output gear from being connected to each other. The output gear moves axially. 6. The power system for abnormal breast tissue resection according to claim 4, further comprising: The right side of the electromagnet mounting bracket is provided with a conical hole surface, and the left side of the lock plate is provided with a conical boss. The conical surface of the conical boss is consistent with the taper of the conical hole surface; A cylindrical sink hole is provided on the left side of the electromagnet mounting bracket. The inner surface of the cylindrical sink hole matches the outer cylindrical surface of the magnet of the electromagnet. The cylindrical hole on the left side of the bracket of the electromagnet mounting bracket The inner step surface is attached to the right end surface of the magnet of the electromagnet; The magnet right end surface of the electromagnet, the lock disk left end surface of the lock disk, the conical surface of the conical boss, and the conical hole surface are friction surfaces with preset friction; The depth of the cylindrical hole on the left side of the lock plate is greater than the thickness of the step shaft at one end of the electromagnet attraction shaft close to the third output gear. The diameter of the step is larger than the diameter of the middle through hole of the lock plate. 7. The power system for abnormal breast tissue resection according to claim 6, further comprising: When the electromagnet is energized, the electromagnet attracts the electromagnet and the axis moves in a direction away from the first output gear. The left end surface of the lock plate is in contact with each other, the conical surface of the conical boss is in contact with the conical hole surface, and the pin extending from the right side of the lock disc is out of the pin hole of the first output gear. , the third output gear is disengaged from the first output gear; The third output gear is affected by the friction between the right end surface of the magnet of the electromagnet and the left end surface of the lock disk, as well as the conical surface of the conical boss and the cone. Due to the friction between the hole surfaces, it cannot rotate and is in a locked state; At this time, the elastic element is in a compressed state, and the attraction force of the electromagnet is greater than the maximum elastic force of the elastic element. 8. The power system for abnormal breast tissue resection according to claim 7, further comprising: When the electromagnet is powered off, the electromagnet attraction shaft moves in a direction closer to the first output gear due to the elasticity of the elastic element, and the right end surface of the left conical step of the lock plate is in contact with the The left side sunken step surface of the third output gear is fitted; At this time, the magnet right end surface of the electromagnet and the lock disk left end surface of the lock disk, the conical surface of the conical boss, and the conical hole surface are no longer in contact and are in a disengaged state. , the lock plate rotates smoothly and is in motion; The pin extending from the right side of the lock plate is inserted into the pin hole of the first output gear, and the third output gear and the first gear are merged into a whole body and are in a linkage state. 9. The power system for abnormal breast tissue resection according to claim 7, further comprising: The pins protruding from the right side of the lock plate are evenly distributed around the circumference, and the total number of the pins is greater than the number of teeth of the first output gear; The pin shaft on the lock plate and the pin hole on the first output gear adopt any shape including cylindrical and conical shapes. 10. The power system for abnormal breast tissue resection according to claim 6, further comprising: When the electromagnet is energized and attracts the lock disc and the electromagnet to attract the shaft, the friction force between the magnet right end surface of the electromagnet and the lock disc left end surface of the lock disc plus The sum of the friction forces between the conical surface of the conical boss and the conical hole surface is greater than the torsion force of the circumferential motion control motor and the linear motion control motor on the third output gear.