An ultrasonic orthopedic drilling device

Abstract

This invention relates to the field of medical device technology, and particularly to an ultrasonic orthopedic drilling device, comprising a main unit, control cables, an operating handle, a cutting tool, a cutting tool holder, a cutting tool sheath, an anti-aspiration module, and a separation module. The invention utilizes the pressure difference generated by soft tissue aspiration blockage via the anti-aspiration module to automatically push open the sealing plate to balance the pressure. A lever-linked pressure relief plate exposes the pressure relief groove, breaking the suction cup effect, thus achieving safe unloading and reverse discharge of aspirated soft tissue while maintaining low negative pressure suction. Furthermore, the separation module utilizes the kinetic energy of large bone fragments to trigger the release of energy through the dead point of the booster spring, rapidly diverting and intercepting the large bone fragments. These fragments are then transferred in advance to the separation chamber via the side separation port for temporary storage, significantly shortening the transport journey of the large bone fragments, effectively avoiding the risk of blockage in the pipeline, and ensuring smooth suction and drainage as well as surgical continuity.

Description

Technical Field

[0001] This invention relates to the field of medical device technology, and in particular to an ultrasonic orthopedic drilling device. Background Technology

[0002] An ultrasonic bone scalpel is a medical device that uses high-intensity focused ultrasound technology to perform bone surgery. As a new type of bone surgical equipment, it converts electrical energy into mechanical energy through a special conversion device, and then cuts the required bone tissue through high-frequency ultrasonic vibration.

[0003] In existing ultrasonic bone scalpel operations, such as Chinese Patent Publication No. CN223586002U, an ultrasonic bone scalpel positioning structure and ultrasonic bone scalpel device are disclosed, including a reference member and a positioning member. The reference member is used to be installed on the handle of the ultrasonic bone scalpel, and the positioning member is configured to determine the current position information of the reference member and, based on the current position information of the reference member and the relationship between the position information of the reference member and the position information of the blade, determine the current position information of the blade. A connecting component is also included, comprising a first connecting member and a second connecting member, wherein one of the handle and the reference member is connected to the first connecting member, and the other is connected to the second connecting member.

[0004] In the aforementioned prior art, the friction is increased by increasing the contact area between the first and second mating surfaces, making the connection between the first and second connectors tighter, improving the connection accuracy, and reducing the risk of the reference part wobbling relative to the blade. However, the aforementioned prior art does not take into account that, on the one hand, low negative pressure adsorption can easily aspirate soft tissues (such as muscles and internal organs) around the patient. After being adsorbed, the soft tissues tend to adhere tightly to the suction port, forming a "suction cup effect." If the doctor does not notice this and moves the operating handle, it can easily cause severe tearing damage to the soft tissues. On the other hand, for patients with osteoporosis, osteosclerosis, or old fracture fragments and dead bone fragments, large bone debris is often generated during surgery, rather than just micron-sized bone powder. Large bone debris is very easy to get stuck and cause blockage when transported in long and narrow tubes.

[0005] Therefore, there is still room for improvement in the aforementioned existing technologies. Summary of the Invention

[0006] To address the issues of traction injuries caused by aspiration of soft tissue and the potential for blockage by large bone fragments, this application provides an ultrasonic orthopedic drilling device.

[0007] The ultrasonic orthopedic drilling device provided in this application adopts the following technical solution: An ultrasonic orthopedic drilling device includes a main unit connected to an operating handle via a control cable; a cutting tool disposed at the end of the operating handle via a tool holder; a blade sheath fitted over the cutting tool and connected to the operating handle, the blade sheath having a multi-layer sleeve structure for rinsing, cooling, and suction of debris during surgery; an anti-aspiration module disposed at the inlet of the blade sheath for depressurizing and backflowing of accidentally aspirated soft tissue; and a separation module disposed within the flow channel of the blade sheath for pre-separating large bone fragments by impacting them with the kinetic energy of the bone fragments.

[0008] Preferably, the top of the main unit is provided with a bracket for suspending saline solution, the side of the main unit is provided with a peristaltic pump, and the front of the main unit is provided with a suction port. A medical tubing is connected to the suction port. The main unit is based on existing technology. When preparing for use, preparations need to be made in advance. Hang the IV bottle containing saline solution on the bracket, and use an infusion tube (existing technology, an infusion tubing used in conjunction with the IV bottle) to connect the IV bottle to the inlet pipe. After the connection is completed, wrap a section of the infusion tube around the peristaltic pump. Then, use a medical tubing (existing technology, a tubing that meets medical standards, which can be detached from the suction port at any time for easy replacement) to connect the sludge discharge pipe to the suction port.

[0009] Preferably, the tool sheath includes a connector that engages with the end of the operating handle; a silicone soft sleeve installed at the lower end of the connector, covering the outer periphery of the tool, with the inner wall of the silicone soft sleeve and the outer wall of the tool forming an annular flushing channel. The silicone soft sleeve provides excellent shock absorption and cushioning, eliminating noise during tool operation and also providing safety protection. Since the tool vibrates at a high frequency (tens of thousands of times per second) during operation, a hard-on connection with the silicone soft sleeve could lead to wear or even breakage if they accidentally collide. The silicone soft sleeve does not have this concern; a metal sleeve installed at the lower end of the connector, covering the outer periphery of the silicone soft sleeve, with the inner wall of the metal sleeve and the outer wall of the silicone soft sleeve forming an annular slag suction channel; and an auxiliary ring installed inside the connector, with an opening inside the auxiliary ring communicating with the slag suction channel. The first auxiliary groove and the inner wall of the auxiliary ring form the second auxiliary groove with the outer wall of the blade. The second auxiliary groove is connected to the rinsing channel. The auxiliary ring separates the rinsing channel and the sludge suction channel at the top to prevent them from mixing in the connector. The sludge discharge pipe is installed on the outer periphery of the connector and is connected to the first auxiliary groove. The sludge discharge pipe is used in conjunction with a medical hose. The water inlet pipe is installed on the outer periphery of the connector and is connected to the rinsing channel. The water inlet pipe is used in conjunction with physiological saline. During operation, bagged / bottled physiological saline is connected to the water inlet pipe through an infusion tube. The first conical nozzle is installed at the lower end of the metal sleeve. The second conical nozzle is installed at the lower end of the silicone soft sleeve. The second conical nozzle acts as a guide, directing the physiological saline to the blade head for rinsing. The first conical nozzle also acts as a guide, directing the negative pressure suction direction to the blade head for bone debris absorption.

[0010] Preferably, the outer wall of the silicone sleeve is provided with annular transverse reinforcing ribs and longitudinal reinforcing ribs. The transverse and longitudinal reinforcing ribs play a reinforcing role. A simple silicone sleeve is relatively soft and easily deformed. The transverse and longitudinal reinforcing ribs form a reinforcing skeleton, so that the silicone sleeve maintains a certain shape and is not easily deformed.

[0011] Preferably, the anti-aspiration module includes a pressure relief hole, which is uniformly formed along the circumference of the inner wall of the first conical nozzle. The lower opening of the pressure relief hole communicates with the outside, and the upper opening of the pressure relief hole communicates with the sludge suction channel. A sealing plate is rotatably disposed at the upper opening of the pressure relief hole. A spring is connected between the sealing plate and the pressure relief hole. When the spring returns to its original position, the sealing plate initially closes the upper opening of the pressure relief hole. A pressure relief groove is uniformly formed along the circumference of the inner wall of the first conical nozzle. A pressure relief plate is slidably disposed inside the pressure relief groove. When soft tissue is accidentally aspirated into the first conical nozzle, the soft tissue is separated from the inner wall of the first conical nozzle and the inner wall of the pressure relief plate. The parts are tightly fitted together. When the pressure relief plate slides later, the pressure relief groove is exposed, breaking the tight fit between the soft tissue and the inner wall of the first conical nozzle. The lever is rotatably mounted on the inner wall of the first conical nozzle. One end of the lever is rotatably engaged with the pressure relief plate via a pin, and the other end of the lever is in abutting engagement with the sealing plate. The lever serves to save effort. A traction element is connected between the lever and the sealing plate. The traction element is made of flexible material. Initially, the traction element is taut. When the sealing plate flips and squeezes the lever, the traction element loosens. Subsequently, when the sealing plate resets, the sealing plate pulls the lever element back to its original position via the traction element, and the traction element tightens again.

[0012] Preferably, the separation module includes a collar shell installed on the outer periphery of a metal sleeve. The collar shell and the outer wall of the metal sleeve form a separation chamber. The separation chamber has a side negative pressure port and a side separation port, both located on the metal sleeve. The side negative pressure port is configured to have a filtering function. A movable plate is slidably disposed in the side separation port via a sealing member. The sealing member has a connecting hole corresponding to the side separation port. Screening holes are evenly distributed on the movable plate. The screening holes serve as a standard for distinguishing between large and small bone fragments. Those that can pass through the screening holes are small bone fragments, and those that cannot pass through the screening holes are large bone fragments. A fixed rod is evenly installed on the inner wall of the metal sleeve. A mating block is installed at the lower end of the fixed rod, and the mating block corresponds one-to-one with the screening hole. A rapid-action mechanism is disposed in the separation chamber.

[0013] Preferably, a top pin is installed at the lower end of the mating block. The top pin plays a role in unloading material. When the screening hole and the mating block are closed, the top pin pushes the large bone residue stuck in the screening hole downward in advance to avoid the large bone residue from obstructing the closing of the screening hole and the mating block.

[0014] Preferably, the rapid-action mechanism includes a movable rod that slides up and down in the separation chamber, a second spring connecting the movable rod and the separation chamber, the second spring serving a reset function, one end of the movable rod being fixedly connected to the movable plate; and a booster spring, one end of which is fixedly installed on the inner wall of the collar shell, the other end of which is a free end, and the booster spring and the movable rod being in a compression fit.

[0015] Preferably, the booster spring is an arc-shaped elastic structure. In the initial state, the booster spring arches and elastically abuts against the movable rod. When the movable rod moves upward, it overcomes the elastic force of the booster spring and presses the booster spring, causing the booster spring to undergo elastic deformation and store energy. As the movable rod moves to the moment it passes the highest arch point (i.e., the dead point position) of the booster spring, the booster spring immediately releases elastic energy, causing the resistance of the booster spring to the movable rod to disappear instantly and be converted into an upward forward thrust, thereby boosting the movable rod to move quickly.

[0016] In summary, the beneficial technical effects of this application are as follows: 1. Safety and prevention of aspiration, avoiding soft tissue damage: The anti-aspiration module uses the pressure difference generated by the blockage caused by the aspiration of soft tissue to automatically push open the sealing plate to balance the pressure. The lever component links the pressure relief plate to expose the pressure relief groove and break the suction cup effect. This achieves safe unloading and back discharge of aspirated soft tissue while maintaining low negative pressure suction conditions. It effectively prevents soft tissue pulling damage caused by the doctor's unintentional pulling when moving the operating handle, thus improving the safety of the operation.

[0017] 2. Intelligent separation of large bone fragments to prevent pipeline blockage: The separation module utilizes the kinetic energy of the large bone fragments to trigger the booster shrapnel to release energy at the dead point, quickly diverting and intercepting the large bone fragments. They are then transferred to the separation chamber for temporary storage via the side separation port, greatly shortening the transportation journey of the large bone fragments, effectively avoiding the risk of pipeline blockage, and ensuring smooth suction and drainage as well as the continuity of the operation. Attached Figure Description

[0018] Figure 1 This is a first three-dimensional structural schematic diagram of the present invention; Figure 2 This is a schematic diagram of the structure between the operating handle, cutting tool, tool holder, tool sleeve, anti-aspiration module, and separation module of the present invention; Figure 3 This is a schematic diagram of the structure between the connector, silicone soft sleeve, and metal sleeve of the present invention; Figure 4 This is a schematic diagram of the structure of the blade sheath of the present invention; Figure 5 This is a schematic diagram of the structure between the silicone soft sleeve, the transverse reinforcing ribs, and the longitudinal reinforcing ribs of the present invention; Figure 6 This is a schematic diagram of the structure between the first conical nozzle and the second conical nozzle of the present invention; Figure 7 This is the present invention. Figure 6 A magnified view of part A; Figure 8 This is a schematic diagram of the anti-aspiration module of the present invention; Figure 9 This is a schematic diagram of the separation module of the present invention.

[0019] Explanation of reference numerals in the attached drawings: 1. Main unit; 11. Control cable; 2. Operating handle; 3. Blade; 4. Blade holder; 5. Blade sleeve; 6. Anti-aspiration module; 7. Separation module; 12. Support; 13. Peristaltic pump; 14. Suction interface; 15. Medical hose; 51. Connector; 52. Silicone soft sleeve; 53. Flushing channel; 54. Metal sleeve; 55. Sludge suction channel; 56. Auxiliary ring; 57. First auxiliary tank; 58. Second auxiliary tank; 59. Sludge discharge pipe; 510. Water inlet pipe; 511. First conical nozzle; 512. 521. Second conical nozzle; 522. Transverse reinforcing rib; 523. Longitudinal reinforcing rib; 64. Pressure relief hole; 65. Sealing plate; 66. Pressure relief groove; 67. Pressure relief plate; 68. Lever component; 69. Traction component; 70. Collar shell; 71. Separation chamber; 722. Side negative pressure port; 723. Side separation port; 74. Movable plate; 75. Sealing component; 76. Connecting hole; 77. Screening hole; 78. Fixed rod; 79. Mating block; 70. Swift movement mechanism; 71. Top pin; 72. Movable rod; 73. Boosting spring. Detailed Implementation

[0020] The following is in conjunction with the appendix Figures 1-9 This application will be described in further detail.

[0021] This application discloses an ultrasonic orthopedic drilling device that triggers automatic pressure relief and breaks the suction cup effect by the pressure difference change caused by the aspiration and blockage of soft tissue, and quickly diverts and intercepts large bone fragments. It achieves safe unloading and reverse discharge of aspirated soft tissue while maintaining low negative pressure suction conditions, as well as anti-blockage function.

[0022] Reference Figure 1 , Figure 2 As shown, an ultrasonic orthopedic drilling device includes a main unit 1, which is connected to an operating handle 2 via a control cable 11; a cutting tool 3, which is mounted on the end of the operating handle 2 via a tool holder 4; a blade sleeve 5, which is fitted over the cutting tool 3 and connected to the operating handle 2, the blade sleeve 5 having a multi-layer sleeve structure, used for rinsing, cooling and suctioning debris during surgery; an anti-aspiration module 6, which is located at the inlet of the blade sleeve 5, for depressurizing and backflushing any aspirated soft tissue; and a separation module 7, which is located within the flow channel of the blade sleeve 5, for pre-separating large bone fragments by impacting them with the kinetic energy of the bone fragments.

[0023] In actual operation, the blade sheath 5 is connected to the main unit 1, the operating handle 2 is activated, and the blade 3 begins to work. The doctor holds the operating handle 2 and uses the blade 3 to cut and drill holes in the patient's bone. At this time, the blade sheath 5 rinses and cools the working part of the blade 3 (referred to as the blade tip) and the drilling area of ​​the patient's bone. Simultaneously, the blade sheath 5 uses low negative pressure adsorption to absorb and remove the bone fragments generated during drilling. The separation module 7 intelligently filters the bone fragments according to their size, allowing small bone fragments to be sucked into the main unit 1, while large bone fragments are temporarily stored in the separation module 7 and cleaned up after the operation. In addition, when the patient's soft tissue (muscle, internal organs, etc.) is accidentally sucked into the blade sheath 5, the anti-absorption module 6 unloads the soft tissue while maintaining low negative pressure adsorption, preventing the doctor from unintentionally pulling on the accidentally sucked soft tissue when operating the handle 2. This application ensures the safety of drilling operations by protecting soft tissue from aspiration and separating large bone fragments in advance.

[0024] Reference Figure 1 As shown, the top of the main unit 1 is provided with a bracket 12 for suspending saline solution, the side of the main unit 1 is provided with a peristaltic pump 13, and the front of the main unit 1 is provided with a suction port 14. A medical hose 15 is connected to the suction port 14. The main unit 1 is based on existing technology. When preparing for use, preparations need to be made in advance. Hang the IV bottle containing saline solution on the bracket 12, and use the infusion tube (existing technology, infusion hose, used in conjunction with the IV bottle) to connect the IV bottle to the inlet pipe 510. After the connection is completed, wrap a section of the infusion tube around the peristaltic pump 13. Then, use the medical hose 15 (existing technology, medical standard hose, which can be detached from the suction port 14 at any time for easy replacement) to connect the sludge discharge pipe 59 to the suction port 14.

[0025] In actual operation, the peristaltic pump 13 continuously squeezes the infusion tube, delivering physiological saline to the inlet pipe 510 in a stable and precise manner. The suction port 14 generates a low negative pressure, which is transmitted to the sludge discharge pipe 59 through the medical hose 15.

[0026] Reference Figure 3 , Figure 4 , Figure 6As shown, the tool sleeve 5 includes a connector 51, which engages with the end of the operating handle 2; and a silicone soft sleeve 52, which is installed at the lower end of the connector 51. The silicone soft sleeve 52 is fitted around the outer periphery of the tool 3, and the inner wall of the silicone soft sleeve 52 forms an annular flushing channel 53 with the outer wall of the tool 3. The silicone soft sleeve 52 provides excellent shock absorption and cushioning, eliminating noise during the operation of the tool 3, and also provides safety protection. Since the tool 3 vibrates at a high frequency (tens of thousands of times / second) during operation, the silicone soft sleeve 52 provides excellent shock absorption and cushioning, eliminating noise during the operation of the tool 3, and also providing safety protection. In a direct, hard-on connection, accidental collisions could lead to wear or even breakage. The silicone sleeve 52 avoids this concern. A metal sleeve 54, installed at the lower end of the connector 51, fits around the outer circumference of the silicone sleeve 52. The inner wall of the metal sleeve 54 and the outer wall of the silicone sleeve 52 form an annular suction channel 55. An auxiliary ring 56, installed inside the connector 51, has a first auxiliary groove 57 communicating with the suction channel 55. The inner wall of 56 and the outer wall of the blade 3 form a second auxiliary groove 58, which is connected to the rinsing channel 53. The auxiliary ring 56 separates the rinsing channel 53 and the sludge suction channel 55 at the top to prevent them from mixing in the connector 51. The sludge discharge pipe 59 is installed on the outer periphery of the connector 51 and is connected to the first auxiliary groove 57. The sludge discharge pipe 59 is used in conjunction with the medical hose 15. The water inlet pipe 510 is installed on the outer periphery of the connector 51. The inlet pipe 510 is connected to the flushing channel 53 and is used in conjunction with physiological saline. During operation, bagged / bottled physiological saline is connected to the inlet pipe 510 through the infusion tube. The first conical nozzle 511 is installed at the lower end of the metal sleeve 54. The second conical nozzle 512 is installed at the lower end of the silicone soft sleeve 52. The second conical nozzle 512 plays a guiding role, directing the physiological saline to the blade head for flushing. The first conical nozzle 511 also plays a guiding role, directing the negative pressure suction direction to the blade head for bone debris absorption.

[0027] Reference Figure 5 As shown, the outer wall of the silicone sleeve 52 is nested with annular transverse reinforcing ribs 521 and longitudinal reinforcing ribs 522. The transverse reinforcing ribs 521 and longitudinal reinforcing ribs 522 play a reinforcing role. The silicone sleeve 52 alone is relatively soft and easily deformed. The transverse reinforcing ribs 521 and longitudinal reinforcing ribs 522 form a reinforcing skeleton, so that the silicone sleeve 52 maintains a certain shape and is not easily deformed.

[0028] In actual operation, the saline solution flows through the inlet pipe 510, the second auxiliary tank 58, and the rinsing channel 53, and finally, guided by the second conical nozzle 512, it rushes towards the cutting head of the blade 3 to cool the cutting head and rinse the patient's wound. This process serves to both cool the wound and keep it visible. The negative pressure flows through the sludge discharge pipe 59, the first auxiliary tank 57, and the sludge suction channel 55, and finally forms a negative pressure suction (low negative pressure) at the first conical nozzle 511, where the saline solution (mixed with the patient's body fluids) and bone fragments are absorbed.

[0029] Reference Figure 7 , Figure 8 As shown, during surgery, there may be situations where patient tissue is suctioned by negative pressure without the doctor noticing. If the doctor moves the operating handle 2 at this time, it may cause pulling on the patient's tissue. To avoid this situation, this application provides an anti-aspiration module 6. The anti-aspiration module 6 includes a pressure relief hole 61, which is evenly distributed circumferentially on the inner wall of the first conical nozzle 511. The lower opening of the pressure relief hole 61 is connected to the outside, and the upper opening of the pressure relief hole 61 is connected to the suction channel 55; a sealing plate 62, which is rotatably disposed at the upper opening of the pressure relief hole 61. A spring is connected between the sealing plate 62 and the pressure relief hole 61. When the spring returns to its original position, the sealing plate 62 in the initial state closes the upper opening of the pressure relief hole 61; and a pressure relief groove 63, which is evenly distributed circumferentially on the inner wall of the first conical nozzle 511. A pressure relief plate 64 is slidably disposed inside the pressure relief groove 63. When the first conical nozzle 511 is in place, the soft tissue is in close contact with the inner wall of the first conical nozzle 511 and the inner wall of the pressure relief plate 64. When the pressure relief plate 64 slides later, the pressure relief groove 63 is exposed, breaking the close contact between the soft tissue and the inner wall of the first conical nozzle 511. The lever 65 is rotatably mounted on the inner wall of the first conical nozzle 511. One end of the lever 65 is rotatably engaged with the pressure relief plate 64 through a pin, and the other end of the lever 65 is in abutting engagement with the sealing plate 62. The lever 65 plays a role in saving effort. A traction member 66 is connected between the lever 65 and the sealing plate 62. The traction member 66 is made of flexible material. The traction member 66 is initially taut. When the sealing plate 62 flips and squeezes the lever 65, the traction member 66 relaxes. When the sealing plate 62 is reset, the sealing plate 62 pulls the lever 65 back to its original position through the traction member 66, and the traction member 66 tightens again.

[0030] When the patient's soft tissue is drawn into the first conical nozzle 511, the nozzle becomes blocked, causing a decrease in pressure inside the nozzle. This is because the blockage reduces the amount of outside air entering, but the amount of air drawn out by the negative pressure inside the nozzle remains unchanged; therefore, the air inside the nozzle decreases as more air is drawn in. Since the pressure relief port 61 is connected to the outside (its lower end is located in a non-working area to prevent blockage), the pressure in the pressure relief port 61 remains constant. A pressure difference is created between the pressure in the pressure relief port 61 and the pressure in the first conical nozzle 511. When this pressure difference reaches a certain level, the sealing plate 62 is pushed open, at which point the pressure relief port 61 and the first conical nozzle 511... The conical nozzle 511 is internally connected, and the pressure inside the first conical nozzle 511 tends to be balanced with the external pressure, reducing the suction force on the soft tissue. In addition, when the sealing plate 62 flips open, it squeezes the lever 65. The lever 65 is squeezed and flipped, thereby driving the pressure relief plate 64 to slide. The pressure relief plate 64 slides in the pressure relief groove 63, exposing the pressure relief groove 63. A gap appears between the soft tissue and the inner wall of the first conical nozzle 511, breaking the suction cup effect formed by the tight fit between the soft tissue and the first conical nozzle 511. This ensures that when the operating handle 2 moves, the attracted soft tissue is only subjected to a small pulling force (ideally, the soft tissue is not subjected to a pulling force and will naturally fall out of the first conical nozzle 511), avoiding damage to the soft tissue.

[0031] Reference Figure 9 As shown, due to the long and narrow path of absorbing bone fragments and transporting them to the host 1, the risk of blockage increases exponentially when absorbing slightly larger bone fragments. To separate large bone fragments in advance and shorten their transport journey, this application provides a separation module 7. The separation module 7 includes a collar shell 71, which is installed on the outer periphery of the metal sleeve 54. The collar shell 71 and the outer wall of the metal sleeve 54 form a separation chamber 72. The separation chamber 72 has a side negative pressure port 721 and a side separation port 722, both located on the metal sleeve 54. The side negative pressure port 721 is configured to have a filtering function. Yes; a movable plate 73, which is slidably disposed in the side separation port 722 via a sealing member 74. The sealing member 74 has a connecting hole 741 corresponding to the side separation port 722. Screening holes 731 are evenly distributed on the movable plate 73. The screening holes 731 serve as a standard for distinguishing between large and small bone fragments. Those that can pass through the screening holes 731 are small bone fragments, and those that cannot pass through the screening holes 731 are large bone fragments; a fixed rod 75, which is evenly installed on the inner wall of the metal sleeve 54. A mating block 76 is installed at the lower end of the fixed rod 75. The mating block 76 corresponds one-to-one with the screening hole 731; a rapid-action mechanism 77, which is disposed in the separation chamber 72.

[0032] Reference Figure 9As shown, a top pin 761 is installed at the lower end of the mating block 76. The top pin 761 plays the role of unloading. When the screening hole 731 and the mating block 76 are closed, the top pin 761 pushes the large bone residue stuck in the screening hole 731 downward in advance to avoid the large bone residue from obstructing the closing of the screening hole 731 and the mating block 76.

[0033] Reference Figure 9 As shown, the rapid-action mechanism 77 includes a movable rod 771, which is slidably disposed in the separation chamber 72. A second spring is connected between the movable rod 771 and the separation chamber 72, and the second spring plays a reset role. One end of the movable rod 771 is fixedly connected to the movable plate 73. A booster spring 772 is fixedly installed on the inner wall of the collar shell 71 at one end, and the other end of the booster spring 772 is a free end. The booster spring 772 and the movable rod 771 are in a compression fit.

[0034] Reference Figure 9 As shown, the booster spring 772 is an arc-shaped elastic structure. In the initial state, the booster spring 772 arches and elastically abuts against the movable rod 771. When the movable rod 771 moves upward, it overcomes the elastic force of the booster spring 772 and presses the booster spring 772. The booster spring 772 undergoes elastic deformation to store energy. As the movable rod 771 moves to the moment it passes the highest arch point (i.e., the dead point position) of the booster spring 772, the booster spring 772 immediately releases elastic energy, so that the resistance of the booster spring 772 to the movable rod 771 disappears instantly and is converted into an upward forward thrust, thereby boosting the movable rod 771 to move quickly.

[0035] In actual operation, large bone fragments, carrying kinetic energy, impact the movable plate 73 and cannot pass through the screening holes 731. The movable plate 73 is gradually moved upward by the impact (the large bone fragments blocking the screening holes 731 also increase the suction force on the movable plate 73, causing it to gradually rise). The movable rod 771 rises with the movable plate 73, thereby squeezing the booster spring 772 to store elastic energy. Once the movable rod 771 moves past the dead point of the booster spring 772, the booster spring 772 immediately releases energy to push the movable rod 771 upward, causing the movable plate 73 to move upward. The movable plate 73 and its mating parts... As block 76 approaches, top pin 761 pushes the large bone fragments stuck in screening hole 731 downwards. Then, screening hole 731 and mating block 76 close and seal. At the same time, sealing member 74 moves upward with movable plate 73, so that connecting hole 741 connects with side separation port 722. Side separation port 722 opens. At this time, airflow is diverted and flows from side negative pressure port 721 and side separation port 722. Large bone fragments are absorbed and enter side separation port 722 for temporary storage. After the large bone fragments are transferred away, all structures are reset and side separation port 722 is closed.

[0036] Current ultrasonic bone scalpels work by rubbing and grinding against bone, "grinding and pulverizing" it layer by layer. The typical byproducts are particles ranging from tens to hundreds of micrometers in size, which appear to the naked eye as "bone powder," and therefore rarely cause blockages. However, patient conditions are unpredictable. The above only applies to normal bone, where "bone powder" is produced. In cases of osteoporosis, osteosclerosis, or where there are old fracture fragments or dead bone fragments (such as large pieces of dead bone in osteomyelitis) in the surgical area, the likelihood of large bone fragments is greatly increased.

[0037] The implementation principle of this embodiment is as follows: Step 1: Preoperative tubing connection Hang the saline solution on the support 12 and connect it to the inlet pipe 510. Connect the medical hose 15 to the sludge outlet pipe 59 and the suction port 14. Step 2: Normal drilling operation Start the operating handle 2, the blade 3 works, the peristaltic pump 13 supplies water to rinse the blade head, and the suction port 14 generates a low negative pressure to suck away small bone fragments; Step 3: Soft tissue aspiration, pressure relief, and reverse drainage When soft tissue blocks the first conical nozzle 511, causing internal pressure to drop, the sealing plate 62 opens under the pressure difference to balance the pressure; at the same time, the sealing plate 62 flips and squeezes the lever 65, causing the pressure relief plate 64 to slide and expose the pressure relief groove 63, breaking the suction effect between the soft tissue and the inner wall and causing it to fall off. Step 4: Unloading and temporary storage of large bone residue The large bone fragment impacts the movable plate 73, causing it to move upward. The movable rod 771 then moves upward and passes the dead point. The booster piece 772 releases energy to quickly push the movable plate 73 upward. The sealing piece 74 moves upward to connect the connecting hole 741 with the side separation port 722. The airflow is diverted to suck the large bone fragment into the separation chamber 72 through the side separation port 722 for temporary storage. Step 5: Post-operative care After the surgery, all parts were cleaned and disassembled for storage.

[0038] The foregoing has only described certain exemplary embodiments of the present invention by way of illustration. Undoubtedly, those skilled in the art can modify the described embodiments in various ways without departing from the spirit and scope of the present invention. Therefore, the foregoing drawings and descriptions are illustrative in nature and should not be construed as limiting the scope of protection of the claims of the present invention.

Claims

1. An ultrasonic orthopedic drilling device, characterized in that, include: The main unit is connected to an operating handle via a control cable; The cutting tool is mounted on the end of the operating handle via a tool holder; A sheath, which is fitted over the outside of the blade and connected to the operating handle, is a multi-layered sleeve structure used for rinsing, cooling, and suctioning debris during surgery. An anti-aspiration module is installed at the inlet of the blade sheath to depressurize and reverse the flow of soft tissue that has been aspirated. The separation module is located inside the flow channel of the blade sleeve and uses the kinetic energy impact of large bone fragments to separate them in advance.

2. The ultrasonic orthopedic drilling device according to claim 1, characterized in that, The top of the main unit is equipped with a bracket for suspending saline solution, the side of the main unit is equipped with a peristaltic pump, and the front of the main unit is equipped with a suction port, to which a medical tubing is connected.

3. The ultrasonic orthopedic drilling device according to claim 2, characterized in that, The tool holder includes: A connector that snaps into the end of the operating handle; A silicone sleeve is installed at the lower end of the connector. The silicone sleeve is fitted around the outer periphery of the cutter, and the inner wall of the silicone sleeve and the outer wall of the cutter form an annular flushing channel. A metal sleeve is installed at the lower end of the connector. The metal sleeve is fitted around the outer periphery of the silicone soft sleeve, and the inner wall of the metal sleeve and the outer wall of the silicone soft sleeve form an annular slag suction channel. An auxiliary ring is installed inside the connector. The auxiliary ring has a first auxiliary groove that communicates with the slag suction channel. The inner wall of the auxiliary ring and the outer wall of the cutter form a second auxiliary groove, which communicates with the flushing channel. The sludge discharge pipe is installed on the outer periphery of the connector. The sludge discharge pipe is connected to the first auxiliary groove and is used in conjunction with the medical hose. The inlet pipe is installed on the outer periphery of the connector. The inlet pipe is connected to the flushing channel and is used in conjunction with physiological saline. The first conical nozzle is installed at the lower end of the metal sleeve; The second conical nozzle is installed at the lower end of the silicone sleeve.

4. The ultrasonic orthopedic drilling device according to claim 3, characterized in that, The outer wall of the silicone sleeve is nested with annular transverse reinforcing ribs and longitudinal reinforcing ribs.

5. The ultrasonic orthopedic drilling device according to claim 3, characterized in that, The anti-aspiration module includes: The pressure relief hole is evenly distributed along the circumference on the inner wall of the first conical nozzle. The lower opening of the pressure relief hole is connected to the outside, and the upper opening of the pressure relief hole is connected to the slag suction channel. A sealing plate is rotatably positioned at the upper opening of the pressure relief hole, and a spring connects the sealing plate to the pressure relief hole. The pressure relief groove is evenly opened along the circumference on the inner wall of the first conical nozzle, and a pressure relief plate is slidably arranged inside the pressure relief groove; The lever is rotatably mounted on the inner wall of the first conical nozzle. One end of the lever is rotatably engaged with the pressure relief plate via a pin, and the other end of the lever is in abutting engagement with the sealing plate. A traction element connects the lever and the sealing plate.

6. The ultrasonic orthopedic drilling device according to claim 3, characterized in that, The separation module includes: A collar shell is installed on the outer periphery of a metal sleeve. The collar shell and the outer wall of the metal sleeve form a separation chamber. The separation chamber is provided with a side negative pressure port and a side separation port, both of which are located on the metal sleeve. The movable plate is slidably installed in the side separation port through a closure. The closure has a connecting hole corresponding to the side separation port, and screening holes are evenly provided on the movable plate. The fixing rods are evenly installed on the inner wall of the metal sleeve. The lower end of the fixing rods is equipped with mating blocks, which correspond one-to-one with the screening holes. The rapid-action mechanism is located in the separation chamber.

7. The ultrasonic orthopedic drilling device according to claim 6, characterized in that, A top pin is installed at the lower end of the mating block.

8. The ultrasonic orthopedic drilling device according to claim 6, characterized in that, The rapid movement mechanism includes: A movable rod is slidably installed in the separation chamber. A spring is connected between the movable rod and the separation chamber. One end of the movable rod is fixedly connected to the movable plate. The booster spring has one end fixedly installed on the inner wall of the collar shell, and the other end of the booster spring is a free end. The booster spring and the movable rod are in a compression fit.

9. An ultrasonic orthopedic drilling device according to claim 8, characterized in that, The booster piece has an arc-shaped elastic structure.

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