An ultrasonic bone cutter suitable for use with a surgical power device

Abstract

The application discloses an ultrasonic bone cutter suitable for surgical power equipment and relates to the technical field of medical devices; in order to solve the problems of resource waste and complicated operation caused by the incompatibility between an ultrasonic host and the ultrasonic bone cutter power equipment in the prior art, the following technical scheme is provided: the application comprises a cutter head, a cutter rod, an ultrasonic handle, a locking piece and a power handle; the ultrasonic handle converts high-frequency electric energy into mechanical vibration and transmits the mechanical vibration to the cutter head; the cutter head is arranged at the end of the cutter rod; one end of the cutter rod, which is away from the cutter head, is arranged on the ultrasonic handle; one end of the ultrasonic handle, which is away from the cutter head, is detachably fixed on the power handle; and the connection between the ultrasonic handle and the power handle is locked through the locking piece; the energy transmission structure and the adaptive interface of the ultrasonic bone cutter are improved, so that the ultrasonic bone cutter can share the same host with the existing surgical power equipment, the ultrasonic host and accessories and other resources are saved, and the compatibility and reusability of the power system are expanded.

Description

Technical Field

[0001] This invention relates to the field of medical device technology, specifically to an ultrasonic bone scalpel suitable for surgical power equipment. Background Technology

[0002] With the rapid development of modern medicine, ultrasonic surgical instruments are increasingly used in clinical surgical treatment. They apply ultrasonic energy to surgery, offering advantages such as precise cutting, safety, tissue selectivity, and low-temperature hemostasis. This greatly enriches surgical methods, improves the quality of surgical procedures, and alleviates patient suffering to some extent, as exemplified by the ultrasonic bone scalpel. The ultrasonic bone scalpel is a surgical instrument that utilizes ultrasonic waves to create high-frequency mechanical vibrations of up to tens of thousands of times per second. It can cut and grind bone tissue. Because the ultrasonic bone scalpel causes relatively little damage to blood vessels and nerves when cutting bone tissue, its application in orthopedic surgery, especially in spinal laminectomy, is becoming increasingly widespread.

[0003] In existing technologies, ultrasonic bone scalpels typically require a cable connection to a separate ultrasonic host for ultrasonic energy transmission. For example, the minimally invasive ultrasonic bone power system disclosed in application number CN201810081767.X only supports ultrasonic scalpels; other power devices such as shaving blades and drill bits cannot be used. Furthermore, the host devices of these power devices cannot be used with ultrasonic bone scalpels. Therefore, it is necessary to improve existing surgical power devices and ultrasonic bone scalpels to make them compatible, thereby reducing the need for ultrasonic hosts and accessories and avoiding resource waste. Summary of the Invention

[0004] The purpose of this invention is to provide an ultrasonic bone scalpel suitable for surgical power equipment, so as to solve the problems of resource waste and cumbersome operation caused by the incompatibility between ultrasonic host and ultrasonic bone scalpel power equipment in the prior art.

[0005] The technical solution of the present invention to solve the above-mentioned technical problems is as follows:

[0006] An ultrasonic bone scalpel suitable for surgical power equipment includes a scalpel head, a scalpel shaft, an ultrasonic handle, and a locking element. The ultrasonic handle converts high-frequency electrical energy into mechanical vibration and transmits the mechanical vibration to the scalpel head. The scalpel head is located at the end of the scalpel shaft. The end of the scalpel shaft away from the scalpel head is located on the ultrasonic handle. The end of the ultrasonic handle away from the scalpel head is detachably fixed to the power handle. The connection between the ultrasonic handle and the power handle is locked by the locking element.

[0007] Furthermore, it includes an ultrasonic guide rod, an amplitude transformer, and an ultrasonic transducer. The ultrasonic transducer is located inside the ultrasonic handle and is connected to the ultrasonic guide rod via the amplitude transformer. The ultrasonic guide rod is connected to the cutter head via the inside of the cutter bar.

[0008] Furthermore, it also includes a coil, a magnetic post, and a driven shaft. One end of the magnetic post is fixedly mounted on one end of the driven shaft, and a coil is arranged around the outside of the magnetic post.

[0009] Furthermore, it also includes a control board, which is located inside the ultrasonic handpiece, with one end of it snapped into the mounting sleeve outside the coil and the other end electrically connected to the ultrasonic transducer.

[0010] Furthermore, the power handle includes a drive shaft, a drive motor, and a cable interface. The drive motor is located inside the power handle, and the drive shaft is located at the output end of the drive motor. The cable interface is located at the end of the power handle away from the drive shaft, and the cable interface is connected to the drive motor via a wire.

[0011] Furthermore, the ends of the drive shaft and the driven shaft mesh, and the drive motor drives the driven shaft to rotate through the drive shaft.

[0012] Furthermore, it also includes a first protective sleeve, a second protective sleeve, and a docking sleeve. The first protective sleeve is disposed on the outside of the drive shaft and is fixedly connected to the power handle. The second protective sleeve is disposed on the outside of the driven shaft after being fitted onto the docking sleeve and is fixedly connected to the ultrasonic handle. The first protective sleeve and the docking sleeve are detachably connected.

[0013] Furthermore, one end of the second protective sleeve is provided with a bead hole and an alignment plane, with steel balls embedded in the bead hole and the alignment plane being adapted to the alignment platform provided on the docking sleeve.

[0014] Furthermore, the locking element is a ring with a groove on its inner wall, which is fitted onto one end of the second protective sleeve where a steel ball is located, and the groove and the steel ball are slidably connected.

[0015] The present invention has the following beneficial effects:

[0016] This invention improves the energy transmission structure and adapter interface of the ultrasonic bone scalpel, enabling it to share the same host with existing surgical power equipment. This eliminates the problem of redundant configuration caused by the single adapter between the host and the instrument in traditional technology, reducing equipment purchase and maintenance costs. Furthermore, the unlocking mechanism allows for a tight fit between the ultrasonic handle and the power handle, facilitating their installation, locking, unlocking, and disassembly. This saves resources such as the ultrasonic host and accessories, and expands the compatibility and reusability of the power system. Attached Figure Description

[0017] Figure 1 A side view of an ultrasonic bone scalpel suitable for use in surgical power equipment;

[0018] Figure 2 A front view of an ultrasonic bone scalpel suitable for surgical power equipment;

[0019] Figure 3 A cross-sectional view of an ultrasonic bone scalpel suitable for surgical power equipment;

[0020] Figure 4 for Figure 3 Enlarged structural diagram at point A in the middle;

[0021] Figure 5 This is a schematic diagram of the second protective sleeve structure;

[0022] Figure 6 This is a schematic diagram of the docking sleeve structure.

[0023] Figures 1 to 6 The reference numerals in the accompanying drawings are as follows: 1-blade head, 2-blade bar, 3-ultrasonic handle, 4-locking element, 5-power handle, 6-ultrasonic guide rod, 7-amplifier rod, 8-ultrasonic transducer, 9-control board, 10-driven shaft, 11-coil, 12-drive shaft, 13-drive motor, 14-cable interface, 15-magnetic column, 16-sealing ring, 17-connecting sleeve, 18-first protective sleeve, 19-second protective sleeve, 20-outer shell. Detailed Implementation

[0024] The technical solution of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0025] like Figure 1-2 As shown, an ultrasonic bone scalpel suitable for surgical power equipment includes an ultrasonic handle 3, a scalpel shaft 2, a scalpel head 1, and a locking element 4. The ultrasonic handle 3 is connected to and locked to the power handle 5 via the locking element 4.

[0026] The ultrasonic handle 3 contains an amplitude transformer 7, an ultrasonic guide rod 6, a winding coil 11 for energy conversion, a magnetic column 15, a driven shaft 10, and an ultrasonic transducer 8. The power handle contains a drive motor 13, a drive shaft 12, and a cable interface 14.

[0027] like Figure 3As shown, one end of the ultrasonic guide rod 6 is connected to the amplitude transformer 7, and the other end is connected to the cutter head 1. A cutter bar 2 is provided around the outside of the ultrasonic guide rod 6 to protect it. When the ultrasonic handle 3 is connected to the power handle 5 via the locking member 4, the drive shaft 12 of the power handle 12 and the driven shaft 10 of the ultrasonic handle 3 are engaged through a slot or gear. When a slot is selected, protrusions and grooves are provided at corresponding positions at the ends of the drive shaft 12 and the driven shaft 10. The protrusions and grooves work together to achieve power transmission. When a gear is selected, crown gears are used at the ends of both the drive shaft 12 and the driven shaft 10. The crown gears mesh with each other to achieve power transmission. Furthermore, the mechanical rotation output by the drive motor 13 is transmitted to the driven shaft 10 through the drive shaft 12, driving the magnetic column 15 to rotate at high speed in the coil 11, cutting magnetic lines of force to generate alternating current. The alternating current is filtered and tuned by the control board 9 and converted into high-frequency electrical energy to drive the ultrasonic transducer 8. One end of the magnetic column is fixedly mounted on one end of the driven shaft. A coil 11 is arranged around the outside of the magnetic column. A mounting cylinder for mounting and protecting the coil 11 is arranged outside the coil 11. The mounting cylinder can be threadedly connected to the second protective sleeve 19. The control plate 9 is located inside the ultrasonic handle 3. One end of the control plate is engaged with the mounting cylinder outside the coil 11, and the other end is electrically connected to the ultrasonic transducer 8.

[0028] The ultrasonic transducer 8 converts high-frequency electrical energy into axial mechanical vibration. After the amplitude is amplified by the amplitude transformer 7, it is transmitted to the cutter head 1 at the end of the cutter head 2 via the ultrasonic guide rod 6, causing it to cut bone tissue in a high-frequency vibration manner. The cutter head 1 is made of titanium alloy with an anti-adhesion coating on the surface. Combined with low-temperature vibration characteristics, it reduces intraoperative thermal damage and tissue adhesion.

[0029] In addition, such as Figures 4-6As shown, the ultrasonic handle 3 and the power handle 5 are connected via a first protective sleeve 18, a docking sleeve 17, and a second protective sleeve 19. The first protective sleeve 18 is located on the outer side of the drive shaft 12 of the power handle 5, and an annular groove is provided on the outer side of the first protective sleeve 18. The second protective sleeve 19 is located on the outer side of the driven shaft 10 of the ultrasonic handle 3, and the docking sleeve 17 is fitted inside the second protective sleeve 19. The first protective sleeve 18, the docking sleeve 17, and the second protective sleeve 19 can be locked by threaded connection or magnetic adsorption. When threaded connection is selected, the top of the first protective sleeve 18 is provided with an external thread, and the docking sleeve 17 and the second protective sleeve 19 are provided with internal threads. The three are fixed by threaded connection. When magnetic adsorption is selected, hematite with opposite magnetic poles is provided at corresponding positions on the top side of the first protective sleeve 18, the docking sleeve 17, and the inner side of the second protective sleeve 19. The three are magnetically fixed. The second protective sleeve 19 has a bead hole and an alignment plane at one end. A steel ball is embedded in the bead hole, and the alignment plane matches the alignment platform on the docking sleeve 17. After docking, the ultrasonic handle 3 and the power handle 5 are locked by a locking member 4. The locking member 4 is designed as a ring with a groove on its inner wall and fits onto the end of the second protective sleeve 19 where the steel ball is located. The groove of the locking member 4 slides with the steel ball in the bead hole of the second protective sleeve 19 to achieve the locking and unlocking functions of the unlocking member. When the first protective sleeve 18 docks with the docking sleeve 17 and the second protective sleeve 19, rotating the locking member 4 causes the steel ball to engage in the annular groove of the docking sleeve 17, achieving mechanical locking. Reverse rotation causes the steel ball to retract into the groove of the locking member 4, allowing for quick separation of the handle. A silicone sealing ring and a shock-absorbing pad are installed at the connection point of the two sleeves to effectively isolate external liquid intrusion and reduce vibration transmission noise, minimizing the impact of vibration on the structure and improving operational stability. Furthermore, the compact and tight fit of each component improves the accuracy of ultrasonic cutting.

[0030] The ultrasonic handpiece 3 incorporates a built-in temperature sensor and overload protection circuit to monitor the temperature and current status of the ultrasonic transducer 8 in real time. When the temperature exceeds the threshold or the load is abnormal, the control board 9 automatically cuts off the power supply to ensure surgical safety. The power handpiece 5's cable interface is compatible with multiple power supply modes (such as battery or external power) and can be connected to the surgical power system host via a standard interface, enabling rapid switching between the ultrasonic bone scalpel and other instruments (such as drills and shaving blades).

[0031] The specific working principle of this application is as follows:

[0032] The drive motor 13 inside the power handle 5 is connected to an external power source or the main unit of the surgical power system via a cable interface 14, driving the drive shaft 12 to rotate. When the ultrasonic handle 3 is locked to the power handle 5 via the locking member 4, the drive shaft 12 engages with the driven shaft 10 inside the ultrasonic handle, and mechanical power is transmitted to the driven shaft 10, causing the magnetic column 15 at its end to rotate at high speed within the coil 11. The magnetic column cuts the magnetic field of the coil to generate an alternating current. After being filtered, rectified, and frequency-modulated by the control board 9, the alternating current generates high-frequency electrical energy suitable for the operation of the ultrasonic transducer 8.

[0033] The ultrasonic transducer 8 converts high-frequency electrical energy into axial high-frequency mechanical vibration. After the amplitude is amplified by the amplitude transformer 7, it is transmitted to the cutter head 1 at the end of the cutter bar 2 by the ultrasonic guide rod 6, driving the cutter head 1 to vibrate. The high-frequency vibration energy of the cutter head 1 is concentrated on the contact surface of bone tissue, achieving precise cutting and grinding. At the same time, due to the low heat generation from vibration, thermal damage to surrounding nerves and blood vessels can be effectively avoided.

[0034] This invention generates the required high-frequency electrical energy by connecting the driven shaft, winding coil, and control board inside the ultrasonic handle of the ultrasonic bone scalpel to the motor output shaft of the power handle. The tight connection and close fit between components such as locking parts, first / second protective sleeves, docking sleeves, coil mounting sleeves, and rubber rings facilitates the installation, locking, unlocking, and disassembly of the ultrasonic handle and the power handle. Ultimately, this invention enables the application of the ultrasonic bone scalpel to power equipment, saving resources such as the ultrasonic main unit and accessories, expanding the compatibility and reusability of the power system, and improving the stability of the ultrasonic bone scalpel, as well as its cutting accuracy and efficiency.

[0035] The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present invention should be included within the protection scope of the present invention.

Claims

1. An ultrasonic bone scalpel suitable for use in surgical power equipment, characterized in that, The device includes a blade head (1), a blade rod (2), an ultrasonic handle (3), and a locking element (4). The ultrasonic handle (3) converts high-frequency electrical energy into mechanical vibration and transmits the mechanical vibration to the blade head (1). The blade head (1) is located at the end of the blade rod (2). The end of the blade rod (2) away from the blade head (1) is located on the ultrasonic handle (3). The end of the ultrasonic handle (3) away from the blade head (1) is detachably fixed to the power handle (5). The connection between the ultrasonic handle (3) and the power handle (5) is locked by the locking element (4). The device also includes an ultrasonic guide rod (6), an amplitude transformer (7), and an ultrasonic transducer (8). The ultrasonic transducer (8) is located inside the ultrasonic handle (3). The ultrasonic transducer (8) is connected to the ultrasonic guide rod (6) through the amplitude transformer (7). The ultrasonic guide rod (6) is connected to the blade head through the inside of the blade rod (2). (1); It also includes a coil (11), a magnetic column (15), and a driven shaft (10). One end of the magnetic column (15) is fixedly disposed at one end of the driven shaft (10), and the coil (11) is arranged around the outside of the magnetic column (15); It also includes a control board (9). The control board (9) is disposed inside the ultrasonic handle (3), and one end of it is snapped into the mounting sleeve outside the coil (11), and the other end is electrically connected to the ultrasonic transducer (8); The power handle (5) includes a drive shaft (12), a drive motor (13), and a cable interface (14). The drive motor (13) is disposed inside the power handle (5). The output end of the drive motor (13) is provided with the drive shaft (12). The end of the power handle (5) away from the drive shaft (12) is provided with the cable interface (14). The cable interface (14) is connected to the drive motor (13) through a wire.

2. The ultrasonic bone scalpel for surgical power equipment according to claim 1, characterized in that, The drive shaft (12) meshes with the end of the driven shaft (10), and the drive motor (13) drives the driven shaft (10) to rotate through the drive shaft (12).

3. The ultrasonic bone scalpel for surgical power equipment according to claim 2, characterized in that, It also includes a first protective sleeve (18), a second protective sleeve (19) and a docking sleeve (17). The first protective sleeve (18) is disposed on the outside of the drive shaft (12) and is fixedly connected to the power handle (5). The second protective sleeve (19) is disposed on the outside of the driven shaft (10) after being sleeved on the docking sleeve (17) and is fixedly connected to the ultrasonic handle (3). The first protective sleeve (18) and the docking sleeve (17) are detachably connected.

4. The ultrasonic bone scalpel for surgical power equipment according to claim 3, characterized in that, The second protective sleeve (19) has a bead hole and an alignment plane at one end. The bead hole is embedded with a steel ball, and the alignment plane is adapted to the alignment platform provided on the docking sleeve (17).

5. The ultrasonic bone scalpel for surgical power equipment according to claim 4, characterized in that, The locking element (4) is a ring with a groove on its inner wall and is fitted onto one end of the second protective sleeve (19) where a steel ball is set. The groove and the steel ball are slidably connected.

Images