Auxiliary device for taking out femoral head in orthopedic surgery

Abstract

The invention relates to the technical field of medical devices, in particular to an auxiliary device for taking out femoral head for orthopedic surgery, which comprises a long rod, the upper end of the long rod is fixedly connected with a T-shaped handle, the outer side of the long rod is provided with a sliding groove, and the inner side of the long rod is provided with a bone taking mechanism for clamping bones. A conical threaded head is fixedly connected to the lower end of the long rod, four sets of open grooves are formed in the outer side of the conical threaded head, a cleaning mechanism used for cleaning bone residues is arranged on the inner side of the conical threaded head, and operation force is converted into elastic piece opening power through mutual cooperation of a connecting rod and a first mounting plate; the elastic sheet is accurately clamped into the femoral head by combining a conical thread head structure, so that double holding of thread fixing and elastic sheet clamping is realized, the holding force is remarkably improved, and slipping during taking out is avoided; the friction contact area is increased through the anti-skid line plate, and the arc-shaped opening angle of the elastic piece is matched, so that the acetabulum can still be stably held in special cases such as osteoporosis, and the acetabulum injury risk is reduced.

Description

Technical Field

[0001] The present invention relates to the technical field of medical devices, in particular to an auxiliary device for removing a femoral head during orthopedic surgery. Background Art

[0002] During hip replacement surgery, the successful removal of the femoral head is crucial for ensuring both efficiency and safety. The conventional instrument used clinically to remove the femoral head is a "head remover," a cone-shaped device with a tapered thread at one end. During surgery, the head remover's tapered threaded head is screwed into the femoral head, creating a gripping force through the engagement of the thread with the bone, which in turn drives the femoral head to rotate. Once the round ligament connecting the femoral head to the acetabulum is broken, the femoral head is removed as a whole.

[0003] Existing head removal devices have significant practical limitations. During surgery for patients with severe osteoporosis or chronic femoral neck lesions, the gripping force between the taper's threaded head and the femoral head is severely insufficient due to osteoporosis, decreased bone density, or substantial resorption of the femoral neck bone due to lesions. In these cases, the head removal device cannot effectively rotate the femoral head to rupture the ligamentum teres, or insufficient grip prevents the complete removal of the femoral head during extraction. To complete the procedure, the surgeon often needs to "destroy the femoral head" and remove it in small pieces. This procedure not only significantly prolongs the operation and increases the risk of intraoperative blood loss and infection, but also easily causes accidental damage to the cartilage and bone on the acetabulum during the extraction process, compromising the overall effectiveness of the hip replacement and the patient's prognosis. Furthermore, existing head removal devices lack the ability to adapt to different bone conditions and femoral head sizes. The single threaded gripping structure makes it difficult to meet diverse clinical needs, further complicating the surgical procedure. At the same time, bone marrow, tissue debris, etc. are likely to remain on the surface of the head remover after surgery. If not cleaned thoroughly, the risk of cross infection may increase. However, the existing head removers do not integrate effective postoperative cleaning functions, which increases the complexity of instrument processing. For this reason, we propose an auxiliary device for removing the femoral head during orthopedic surgery. Summary of the Invention

[0004] In order to remedy the deficiencies of the prior art and solve at least one of the technical problems raised in the background art, the present invention proposes an auxiliary device for removing the femoral head during orthopedic surgery.

[0005] The technical solution adopted by the present invention to solve its technical problems is: an auxiliary device for removing the femoral head during orthopedic surgery, comprising a long rod, the upper end of the long rod is fixedly connected to a T-shaped handle, a sliding groove is provided on the outer side of the long rod, and a bone removal mechanism for clamping the bone is provided on the inner side of the long rod; the lower end of the long rod is fixedly connected to a tapered threaded head, the outer side of the tapered threaded head is provided with four groups of slots, and the inner side of the tapered threaded head is provided with a cleaning mechanism for cleaning bone debris.

[0006] Preferably, the bone removal mechanism includes a lever assembly for improving the clamping effect, and the bone removal mechanism also includes an adjustment assembly for adjusting the extension angle.

[0007] Preferably, the lever assembly includes a first rotating shaft fixedly connected to the inner wall of the long rod, the outer side of the first rotating shaft is fixedly connected to the first mounting plate, the outer side of the first mounting plate is fixedly connected to the operating rod, the operating rod is slidably connected to the inner side of the slide groove of the long rod, the front end of the first mounting plate is fixedly connected to the limiting frame, the inner side of the limiting frame is rotatably connected to the threaded rod, the outer side of the threaded rod is threadedly connected to the adjusting block, the adjusting block is slidably connected to the inner side of the limiting frame, the front end of the adjusting block is rotatably connected to the connecting rod through the rotating shaft, the lower end of the connecting rod is rotatably connected to the transmission rod through the rotating shaft, the lower end of the transmission rod is slidably connected to the guide rod, the lower end of the guide rod is fixedly connected to the fixing plate, and the fixing plate is fixedly connected to the inner side of the tapered threaded head.

[0008] Preferably, the lower end of the guide rod is fixedly connected to four groups of fixed rings through a baffle, the other end of the fixed ring is fixedly connected to a pressure rod, the other end of the pressure rod is rotatably connected to a C-shaped guide plate through a rotating shaft, the inner wall of the C-shaped guide plate is fixedly connected to two groups of symmetrical sliders, the inner side of the C-shaped guide plate is slidably connected to a spring sheet, the lower end of the spring sheet is rotatably connected to the fixed plate through a rotating shaft, both sides of the spring sheet are provided with sliding grooves, and the adjacent sides of the four groups of spring sheets are fixedly connected to an anti-slip pattern plate, the interior of the C-shaped guide plate is hollowed out, and the outer side of the spring sheet is provided with a hydrophobic coating.

[0009] Preferably, the adjustment assembly includes a servo motor installed at the rear end of the first mounting plate, the output shaft of the servo motor passes through the first mounting plate, the output shaft of the servo motor is fixedly connected to a first bevel gear, the outer side of the first bevel gear is meshed with a second bevel gear, and one end of the second bevel gear is fixedly connected to the threaded rod.

[0010] Preferably, the cleaning mechanism includes a spray component for post-operative cleaning, and the cleaning mechanism also includes a vibration component for cleaning adhered particles.

[0011] Preferably, the spray assembly includes a disinfectant storage tube arranged on the inner wall of the long rod, a fluid infusion tube is installed at the upper end of the disinfectant storage tube, four groups of one-way valves are provided at the lower end of the disinfectant storage tube, the lower end of the one-way valve is fixedly connected to a three-way pipe, the outer side of the three-way pipe is fixedly connected to a second mounting plate, the second mounting plate is fixedly connected to the inner side of the long rod, the vertical pipes of the four groups of three-way pipes are all slidably connected with rubber pads, the lower ends of the four groups of rubber pads are commonly fixedly connected to a connecting plate, and the connecting plate is fixedly connected to the outer side of the disinfectant storage tube.

[0012] Preferably, one end of the transverse pipe of the tee pipe is fixedly connected to a hose, the outer side of the hose passes through the second mounting plate, the other end of the hose is fixedly connected to a discharge pipe, the outer side of the discharge pipe is fixedly connected to a fixed ring through a clamping block, the other end of the discharge pipe is fixedly connected to a spray frame, four groups of spray heads are respectively provided on the inner wall of the spray frame, and the spray frame is slidably connected to the outer side of the spring.

[0013] Preferably, the vibration components are each provided with a hydrophobic layer, and the vibration components include two groups of symmetrical third mounting plates, the same end of the two groups of third mounting plates are fixedly connected to the C-shaped guide plate, the inner sides of the two groups of third mounting plates are commonly connected to a second rotating shaft, the outer side of the second rotating shaft is fixedly connected to a cleaning brush, both ends of the second rotating shaft are fixedly connected to a spur gear, the outer side of the spur gear is meshedly connected to a rack, and the other side of the rack is fixedly connected to a spring.

[0014] Preferably, the ends of the two groups of spur gears that are away from each other are fixedly connected to the third rotating shaft, the outer side of the third rotating shaft is fixedly connected to an eccentric plate, the outer side of the eccentric plate is rotatably connected to an annular plate, the outer side of the annular plate is fixedly connected to a sliding rod, the outer side of the sliding rod is slidably connected to the third mounting plate, the upper end of the sliding rod is fixedly connected to a limiting block, a spring is provided on the outer side of the sliding rod, one end of the spring is fixedly connected to the third mounting plate, and the other end of the spring is fixedly connected to the annular plate.

[0015] Compared with the prior art, the present invention provides an auxiliary device for removing the femoral head during orthopedic surgery, which has the following beneficial effects: 1. The operating force is converted into the power for the shrapnel to open through the cooperation between the connecting rod and the first mounting plate. Combined with the tapered thread head structure, the shrapnel is accurately clamped into the femoral head, realizing the dual grip of "thread fixation + shrapnel clamping", significantly improving the gripping force and preventing slippage during removal; the anti-slip pattern plate increases the friction contact area, and the arc-shaped opening angle of the shrapnel can still maintain stable grip in special cases such as osteoporosis, reducing the need for fragmented removal of damaged femoral heads and the risk of acetabulum injury; the opening angle of the shrapnel is adjusted by the motor and gear transmission, flexibly adapting to different femoral head sizes and bone hardness, ensuring stable clamping in all types of cases and improving the versatility of the device.

[0016] 2. The transmission action drives liquid extraction and spraying. The disinfectant evenly covers the shrapnel and the anti-slip pattern plate through the pipeline, realizing automatic sterilization and cleaning after surgery, avoiding medical contamination caused by human tissue residue, and reducing the risk of infection. The cleaning brush is driven by gear transmission to rotate and sweep away residual particles. At the same time, the eccentric structure and spring are used to generate vibration to clean the shrapnel chute, completely removing bone marrow residues, preventing particles from affecting the resetting of the shrapnel, and ensuring the cleanliness of the device for repeated use.

[0017] 3. A stable force conduction path is formed by the long rod, T-handle and guide structure, which reduces the loss of operating force, ensures that the operator can accurately control the movement of the shrapnel, and improves the convenience of operation; the limit block limits the vibration stroke, the sealing treatment prevents liquid leakage, and the hydrophobic coating reduces tissue adhesion, avoids excessive movement of components or leakage failures, ensures the stable operation of the device during surgery, and reduces operational risks; through angle adjustment to adapt to different bone conditions, it reduces secondary operations caused by device incompatibility, shortens the operation time, and reduces the risk of complications such as blood loss and infection in patients. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] Figure 1 It is a schematic diagram of the overall structure of the present invention; Figure 2 The overall structure of the present invention is schematically shown in cross-section Figure 1 ; Figure 3 The overall structure of the present invention is schematically shown in cross-section Figure 2 ; Figure 4 For the present invention Figure 3 A schematic diagram of the structure of part A in the middle; Figure 5 For the present invention Figure 3 A magnified schematic diagram of the structure of part B; Figure 6 It is an enlarged schematic diagram of the overall structure of the cleaning mechanism of the present invention; Figure 7 This is an enlarged cross-sectional view of the overall structure of the cleaning mechanism of the present invention; Figure 8 For the present invention Figure 7 A magnified schematic diagram of the structure of part C in the middle; Figure 9 It is an enlarged schematic diagram of the overall structure of the vibration component of the present invention; Figure 10 It is an enlarged cross-sectional schematic diagram of the overall structure of the vibration assembly of the present invention; Figure 11 For the present invention Figure 10 A schematic diagram of the structure of part D in the middle is enlarged; Figure 12 It is a schematic cross-sectional view of the overall structure of the vibration component of the present invention.

[0019] In the figure: 1. Long rod; 2. T-shaped handle; 3. Tapered threaded head; 4. Bone removal mechanism; 41. Lever assembly; 411. First rotating shaft; 412. First mounting plate; 413. Operating lever; 414. Limiting frame; 415. Adjusting block; 416. Connecting rod; 417. Transmission rod; 418. Guide rod; 419. Fixed ring; 4110. Pressure rod; 4111. C-shaped guide plate; 4112. Spring piece; 4113. Anti-slip pattern plate; 4114. Fixed plate; 4115. Threaded rod; 42. Adjusting assembly; 421. Servo motor; 422. First bevel gear; 423 , second bevel gear; 5, cleaning mechanism; 51, spray assembly; 511, disinfectant storage tube; 512, one-way valve; 513, three-way pipe; 514, second mounting plate; 515, rubber pad pressure plate; 516, connecting plate; 517, hose; 518, discharge pipe; 519, spray frame; 52, vibration assembly; 521, third mounting plate; 522, second rotating shaft; 523, cleaning brush; 524, spur gear; 525, rack; 526, third rotating shaft; 527, eccentric plate; 528, annular plate; 529, slide rod; 5210, limit block; 5211, spring. DETAILED DESCRIPTION

[0020] The technical solutions in the embodiments of the present invention will be described clearly and completely below with reference to the accompanying drawings in the embodiments of the present invention.

[0021] The following electrical components are all electrically connected through the external PLC controller.

[0022] See also Figures 1-12 An auxiliary device for removing the femoral head in orthopedic surgery includes a long rod 1, the upper end of the long rod 1 is fixedly connected to a T-shaped handle 2, a sliding groove is provided on the outside of the long rod 1, and a bone removal mechanism 4 for clamping the bone is provided on the inside of the long rod 1. The lower end of the long rod 1 is fixedly connected to a tapered threaded head 3, the outside of the tapered threaded head 3 is provided with four groups of slots, and the inside of the tapered threaded head 3 is provided with a cleaning mechanism 5 for cleaning bone debris.

[0023] In this embodiment, the bone removal mechanism 4 includes a lever assembly 41 for improving the clamping effect, and the bone removal mechanism 4 also includes an adjustment assembly 42 for adjusting the extension angle.

[0024] Specifically, the bone removal mechanism 4 realizes the mechanical clamping of the spring piece 4112 to the femoral head through the lever assembly 41, and flexibly adapts to the shape and hardness of different bones through the adjustment assembly 42 to improve the holding stability.

[0025] In this embodiment, the lever assembly 41 includes a first rotating shaft 411 fixedly connected to the inner wall of the long rod 1, the outer side of the first rotating shaft 411 is fixedly connected to the first mounting plate 412, the outer side of the first mounting plate 412 is fixedly connected to the operating rod 413, the operating rod 413 is slidably connected to the inner side of the slide groove of the long rod 1, the front end of the first mounting plate 412 is fixedly connected to the limiting frame 414, the inner side of the limiting frame 414 is rotatably connected to the threaded rod 4115, the outer side of the threaded rod 4115 is threadedly connected to the adjusting block 415, the adjusting block 415 is slidably connected to the inner side of the limiting frame 414, the front end of the adjusting block 415 is rotatably connected to the connecting rod 416 through the rotating shaft, the lower end of the connecting rod 416 is rotatably connected to the transmission rod 417 through the rotating shaft, the lower end of the transmission rod 417 is slidably connected to the guide rod 418, the lower end of the guide rod 418 is fixedly connected to the fixing plate 4114, and the fixing plate 4114 is fixedly connected to the inner side of the tapered thread head 3.

[0026] Specifically, the lever assembly 41 forms a lever fulcrum through the first rotating shaft 411, and transmits the rotational force of the operating lever 413 to the transmission rod 417 through the first mounting plate 412 and the connecting rod 416. The guide rod 418 ensures that the transmission rod 417 is subjected to vertical force. The limit frame 414 and the adjustment block 415 limit the transmission direction, providing stable power transmission for the opening of the spring piece 4112.

[0027] In this embodiment, the lower end of the guide rod 418 is fixedly connected to four groups of fixed rings 419 through a baffle, the other end of the fixed ring 419 is fixedly connected to a pressure rod 4110, and the other end of the pressure rod 4110 is rotatably connected to a C-shaped guide plate 4111 through a rotating shaft. The inner wall of the C-shaped guide plate 4111 is fixedly connected to two groups of symmetrical sliders, and the inner side of the C-shaped guide plate 4111 is slidably connected to a spring piece 4112, and the lower end of the spring piece 4112 is rotatably connected to the fixed plate 4114 through a rotating shaft. Slide grooves are provided on both sides of the spring piece 4112, and the adjacent sides of the four groups of spring pieces 4112 are fixedly connected to an anti-slip pattern plate 4113. The interior of the C-shaped guide plate 4111 is hollowed out, and the outer side of the spring piece 4112 is provided with a hydrophobic coating.

[0028] Specifically, the fixed ring 419 evenly transmits the force of the transmission rod 417 to the pressure rod 4110, and the C-shaped guide plate 4111 cooperates with the slide groove of the spring piece 4112 through the slider to achieve directional sliding. Combined with the inner diameter narrowing structure of the tapered thread head 3, it pushes the spring piece 4112 to open with the fixed plate 4114 as the axis; the anti-slip pattern plate 4113 enhances the friction holding force, and the hydrophobic coating reduces tissue residue, which together improves the clamping stability.

[0029] In this embodiment, the adjustment component 42 includes a servo motor 421 installed on the rear end of the first mounting plate 412, the output shaft of the servo motor 421 passes through the first mounting plate 412, the output shaft of the servo motor 421 is fixedly connected to the first bevel gear 422, the outer side of the first bevel gear 422 is meshed with the second bevel gear 423, and one end of the second bevel gear 423 is fixedly connected to the threaded rod 4115.

[0030] Specifically, the adjustment component 42 drives the first bevel gear 422 and the second bevel gear 423 to engage and transmit through the servo motor 421, driving the threaded rod 4115 to rotate, and uses the threaded transmission to translate the adjustment block 415, thereby changing the angle of the connecting rod 416, thereby achieving precise adjustment of the opening angle of the spring piece 4112 to adapt to different bone qualities and femoral head sizes.

[0031] In this embodiment, the cleaning mechanism 5 includes a spray component 51 for post-operative cleaning, and the cleaning mechanism 5 also includes a vibration component 52 for cleaning adhered particles.

[0032] Specifically, the cleaning mechanism 5 achieves temporary postoperative disinfection through the spray component 51 to avoid human tissue residue, thereby reducing the risk of medical contamination, and removes residual particles through the vibration component 52. The two work together to ensure the cleanliness of the device and avoid tissue residue affecting subsequent use.

[0033] In this embodiment, the spray assembly 51 includes a disinfectant storage tube 511 arranged on the inner wall of the long rod 1, and a fluid infusion tube is installed at the upper end of the disinfectant storage tube 511. Four groups of one-way valves 512 are provided at the lower end of the disinfectant storage tube 511. The lower end of the one-way valve 512 is fixedly connected to a three-way pipe 513, and the outer side of the three-way pipe 513 is fixedly connected to a second mounting plate 514. The second mounting plate 514 is fixedly connected to the inner side of the long rod 1. The vertical pipes of the four groups of three-way pipes 513 are all slidably connected with rubber pad pressure plates 515. The lower ends of the four groups of rubber pad pressure plates 515 are commonly fixedly connected to a connecting plate 516, and the connecting plate 516 is fixedly connected to the outer side of the disinfectant storage tube 511.

[0034] Specifically, the spray assembly 51 stores disinfectant through the disinfectant storage tube 511, the one-way valve 512 controls the liquid flow direction, and the transmission rod 417 drives the rubber pad pressure plate 515 to slide in the three-way pipe 513 to achieve quantitative extraction and squeezing and pushing of the disinfectant, providing liquid power for postoperative cleaning.

[0035] In this embodiment, one end of the transverse pipe of the three-way pipe 513 is fixedly connected to a hose 517, the outer side of the hose 517 passes through the second mounting plate 514, and the other end of the hose 517 is fixedly connected to a discharge pipe 518. The outer side of the discharge pipe 518 is fixedly connected to the fixed ring 419 through a clamping block, and the other end of the discharge pipe 518 is fixedly connected to a spray frame 519. Four groups of spray heads are respectively provided on the inner wall of the spray frame 519, and the spray frame 519 is slidably connected to the outer side of the spring piece 4112.

[0036] Specifically, the hose 517 and the discharge pipe 518 form a liquid delivery channel, and the spray frame 519 moves with the shrapnel 4112, and the disinfectant is evenly sprayed on the surface of the shrapnel 4112 and the anti-slip pattern plate 4113 through four groups of spray heads to achieve full coverage of the cleaning range.

[0037] In this embodiment, the vibration components 52 are each provided with a hydrophobic layer, and the vibration components 52 include two groups of symmetrical third mounting plates 521. The same end of the two groups of third mounting plates 521 is fixedly connected to the C-shaped guide plate 4111, and the inner sides of the two groups of third mounting plates 521 are jointly rotatably connected to the second rotating shaft 522. The outer side of the second rotating shaft 522 is fixedly connected to a cleaning brush 523. Both ends of the second rotating shaft 522 are fixedly connected to a spur gear 524. The outer side of the spur gear 524 is meshedly connected to a rack 525, and the other side of the rack 525 is fixedly connected to the spring piece 4112.

[0038] Specifically, the vibration component 52 moves with the C-shaped guide plate 4111 through the third mounting plate 521, and the spur gear 524 engages with the rack 525 to drive the second rotating shaft 522 to rotate, driving the cleaning brush 523 to rotate, mechanically cleaning the bone marrow particles remaining in the anti-slip pattern plate 4113, and the hydrophobic layer reduces liquid residue.

[0039] In this embodiment, the ends of the two groups of spur gears 524 that are away from each other are fixedly connected to the third rotating shaft 526, the outer side of the third rotating shaft 526 is fixedly connected to the eccentric plate 527, the outer side of the eccentric plate 527 is rotatably connected to the annular plate 528, the outer side of the annular plate 528 is fixedly connected to the slide rod 529, the outer side of the slide rod 529 is slidingly connected to the third mounting plate 521, the upper end of the slide rod 529 is fixedly connected to the limiting block 5210, and a spring 5211 is provided on the outer side of the slide rod 529, one end of the spring 5211 is fixedly connected to the third mounting plate 521, and the other end of the spring 5211 is fixedly connected to the annular plate 528.

[0040] Specifically, the third rotating shaft 526 drives the eccentric plate 527 to rotate eccentrically, and cooperates with the elastic force of the spring 5211 to make the annular plate 528 and the slide rod 529 produce periodic reciprocating motion, and the annular plate 528 knocks the C-shaped guide plate 4111 to generate vibration, thereby clearing the particles in the slide groove of the shrapnel 4112; the limit block 5210 limits the stroke of the slide rod 529 to ensure stable vibration.

[0041] Working principle: Align the T-handle 2 with the long rod 1 at the target position and screw the tapered thread head 3 into the femoral head. Grab the joystick 413 and lift it upward. Joystick 413 rotates clockwise about the first rotating shaft 411, synchronously rotating the first mounting plate 412. The first mounting plate 412 drives the connecting rod 416 downward via the adjustment block 415, causing it to press against the transmission rod 417. The assembly above the transmission rod 417 maintains a safe distance from the bone and does not contact it. Guided by the guide rod 418, it moves vertically downward, driving the four sets of fixed rings 419 to move synchronously. The fixed ring 419 pushes the C-shaped guide plate 4111 downward via the pressure rod 4110. The C-shaped guide plate 4111 maintains a sliding connection along the groove of the spring piece 4112 via the clamping block. With the structural feature that the inner diameter of the tapered thread head 3 gradually narrows, the pressure rod 4110 pushes the spring piece 4112 out of the groove of the tapered thread head 3 via the C-shaped guide plate 4111. The spring piece 4112 rotates around the fixed plate 4114 and opens, locking into the interior of the femoral head. The anti-slip pattern plate 4113 enhances friction and prevents bone fracture caused by rigid contact, allowing the tapered thread head 3 to firmly grip the femoral head, making the grip more stable when the femoral head rotates and preventing it from slipping during extraction. Before surgery, the servo motor 421 is activated, and its output shaft drives the first bevel gear 422 to rotate. The first bevel gear 422, by engaging with the second bevel gear 423, drives the threaded rod 4115 to rotate. The threaded rod 4115, through the threaded transmission and the limiting effect of the limiting frame 414, drives the adjustment block 415 to move linearly, thereby changing the angle of the connecting rod 416, and realizing the function of adjusting the opening angle of the spring piece 4112 according to different bone conditions. The one-way valve 512 is activated to connect the disinfectant storage tube 511 with the three-way pipe 513; when the transmission rod 417 moves downward, the connecting plate 516 drives the rubber pad pressure plate 515 to slide in the three-way pipe 513, and the single-use liquid stored in the disinfectant storage tube 511 is extracted into the three-way pipe 513, and then the one-way valve 512 is closed. After use, the transmission rod 417 moves upward, and the rubber pad pressure plate 515 moves upward synchronously to squeeze the three-way pipe 513. Since the one-way valve 512 is in a closed state, the disinfectant enters the hose 517 through the horizontal pipe of the three-way pipe 513, and is then transported to the spray head input port in the spray frame 519 through the discharge pipe 518; when the spray frame 519 moves along the shrapnel 4112, the shrapnel 4112 and the anti-slip pattern plate 4113 are fully sprayed to achieve temporary sterilization and cleaning, and to prevent residual human tissue from affecting subsequent treatment; As the C-shaped guide plate 4111 moves along the spring piece 4112, it drives the second rotating shaft 522 to move synchronously via the third mounting plate 521. The second rotating shaft 522 rotates through the meshing action of the spur gear 524 and the rack 525, allowing the cleaning brush 523 to clean the residual bone marrow particles in the anti-slip pattern plate 4113. As the spur gear 524 rotates, it drives the eccentric plate 527 to move eccentrically via the third rotating shaft 526. The drop generated by the rotation of the eccentric plate 527 drives the annular plate 528 to move, which in turn drives the slide bar 529 upward and compresses the spring 5211. Subsequently, the elastic force of the spring 5211 and the rotation of the eccentric plate 527 cause the slide bar 529 to return to its original position, forming a cyclical motion. As the annular plate 528 moves, it is restrained by a stopper 5210 above. The outer side of the annular plate 528 strikes the side of the C-shaped guide plate 4111 near the spring 4112. This vibration removes particles from the chute of the spring 4112, preventing it from resetting and improving the cleaning effect. The connection between the spur gear 524 and the second and third rotating shafts 522 and 526 is sealed to prevent the interior of the fixed plate 4114 from being affected by blood infiltration.

[0042] Although the embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions and variations can be made to the embodiments without departing from the principles and spirit of the invention, and the scope of the invention is defined by the appended claims and their equivalents.

Claims

1. An auxiliary device for removing a femoral head in orthopedic surgery, comprising a long rod (1), characterized in that: The upper end of the long rod (1) is fixedly connected to a T-shaped handle (2), a sliding groove is provided on the outer side of the long rod (1), a bone removal mechanism (4) for clamping bones is provided on the inner side of the long rod (1), and the lower end of the long rod (1) is fixedly connected to a tapered threaded head (3), four groups of slots are provided on the outer side of the tapered threaded head (3), and a cleaning mechanism (5) for cleaning bone residues is provided on the inner side of the tapered threaded head (3).

2. The auxiliary device for removing the femoral head for orthopedic surgery according to claim 1, characterized in that: The bone removal mechanism (4) comprises a lever assembly (41) for improving the clamping effect, and the bone removal mechanism (4) further comprises an adjustment assembly (42) for adjusting the extension angle.

3. The auxiliary device for removing the femoral head for orthopedic surgery according to claim 2, characterized in that: The lever assembly (41) includes a first rotating shaft (411) fixedly connected to the inner wall of the long rod (1), a first mounting plate (412) fixedly connected to the outer side of the first rotating shaft (411), a joystick (413) fixedly connected to the outer side of the first mounting plate (412), the joystick (413) slidably connected to the inner side of the sliding groove of the long rod (1), a front end of the first mounting plate (412) fixedly connected to a limiting frame (414), the inner side of the limiting frame (414) is rotatably connected to a threaded rod (4115), the threaded rod (411 5) is connected to an adjusting block (415) by a threaded connection on the outside, the adjusting block (415) is slidably connected to the inside of the limiting frame (414), the front end of the adjusting block (415) is rotatably connected to a connecting rod (416) via a rotating shaft, the lower end of the connecting rod (416) is rotatably connected to a transmission rod (417) via a rotating shaft, the lower end of the transmission rod (417) is slidably connected to a guide rod (418), the lower end of the guide rod (418) is fixedly connected to a fixing plate (4114), and the fixing plate (4114) is fixedly connected to the inside of the tapered thread head (3).

4. The auxiliary device for removing the femoral head for orthopedic surgery according to claim 3, characterized in that: The lower end of the guide rod (418) is fixedly connected to four groups of fixed rings (419) through a baffle, the other end of the fixed ring (419) is fixedly connected to a pressure rod (4110), and the other end of the pressure rod (4110) is rotatably connected to a C-shaped guide plate (4111) through a rotating shaft. The inner wall of the C-shaped guide plate (4111) is fixedly connected to two groups of symmetrical sliders, and the inner side of the C-shaped guide plate (4111) is slidably connected to a spring sheet (4112). The lower end of the spring sheet (4112) is rotatably connected to a fixed plate (4114) through a rotating shaft. Both sides of the spring sheet (4112) are provided with a sliding groove, and the adjacent sides of the four groups of spring sheets (4112) are fixedly connected to an anti-slip pattern plate (4113). The interior of the C-shaped guide plate (4111) is hollowed out, and the outer side of the spring sheet (4112) is provided with a hydrophobic coating.

5. The auxiliary device for removing the femoral head for orthopedic surgery according to claim 2, characterized in that: The adjustment assembly (42) includes a servo motor (421) mounted on the rear end of a first mounting plate (412), an output shaft of the servo motor (421) passing through the first mounting plate (412), the output shaft of the servo motor (421) being fixedly connected to a first bevel gear (422), an outer side of the first bevel gear (422) being meshedly connected to a second bevel gear (423), and one end of the second bevel gear (423) being fixedly connected to a threaded rod (4115).

6. The auxiliary device for removing the femoral head for orthopedic surgery according to claim 2, characterized in that: The cleaning mechanism (5) comprises a spray component (51) for postoperative cleaning, and the cleaning mechanism (5) further comprises a vibration component (52) for cleaning adhered particles.

7. The auxiliary device for removing the femoral head for orthopedic surgery according to claim 6, characterized in that: The spray assembly (51) comprises a disinfectant storage tube (511) arranged on the inner wall of the long rod (1), a rehydration tube is installed at the upper end of the disinfectant storage tube (511), and four groups of one-way valves (512) are arranged at the lower end of the disinfectant storage tube (511), and the lower end of the one-way valve (512) is fixedly connected to a three-way pipe (513), and the outer side of the three-way pipe (513) is fixedly connected to a second mounting plate (514), and the second mounting plate (514) is fixedly connected to the inner side of the long rod (1). The vertical pipes of the four groups of three-way pipes (513) are all slidably connected to rubber pad pressure plates (515), and the lower ends of the four groups of rubber pad pressure plates (515) are commonly fixedly connected to a connecting plate (516), and the connecting plate (516) is fixedly connected to the outer side of the disinfectant storage tube (511).

8. The auxiliary device for removing the femoral head for orthopedic surgery according to claim 7, characterized in that: One end of the transverse pipe of the three-way pipe (513) is fixedly connected to a hose (517), the outer side of the hose (517) passes through the second mounting plate (514), the other end of the hose (517) is fixedly connected to a discharge pipe (518), the outer side of the discharge pipe (518) is fixedly connected to a fixed ring (419) through a clamping block, and the other end of the discharge pipe (518) is fixedly connected to a spray frame (519), the inner wall of the spray frame (519) is respectively provided with four groups of spray heads, and the spray frame (519) is slidably connected to the outer side of the spring (4112).

9. The auxiliary device for removing the femoral head for orthopedic surgery according to claim 6, characterized in that: The vibration components (52) are all provided with a hydrophobic layer. The vibration components (52) include two groups of symmetrical third mounting plates (521). The same end of the two groups of third mounting plates (521) is fixedly connected to the C-shaped guide plate (4111). The inner sides of the two groups of third mounting plates (521) are connected to a second rotating shaft (522) in a common rotation manner. The outer side of the second rotating shaft (522) is fixedly connected to a cleaning brush (523). Both ends of the second rotating shaft (522) are fixedly connected to a spur gear (524). The outer side of the spur gear (524) is meshedly connected to a rack (525). The other side of the rack (525) is fixedly connected to the spring (4112).

10. The auxiliary device for removing the femoral head in orthopedic surgery according to claim 9, characterized in that: The ends of the two groups of spur gears (524) that are away from each other are fixedly connected to a third rotating shaft (526), ​​the outer side of the third rotating shaft (526) is fixedly connected to an eccentric plate (527), the outer side of the eccentric plate (527) is rotatably connected to an annular plate (528), the outer side of the annular plate (528) is fixedly connected to a slide rod (529), the outer side of the slide rod (529) is slidably connected to the third mounting plate (521), the upper end of the slide rod (529) is fixedly connected to a limiting block (5210), the outer side of the slide rod (529) is provided with a spring (5211), one end of the spring (5211) is fixedly connected to the third mounting plate (521), and the other end of the spring (5211) is fixedly connected to the annular plate (528).

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