Bone power kit for orthopedic surgery

Abstract

The utility model discloses a bone power suite for orthopedic surgery, which comprises a power main body and a functional head, the functional head comprises one or more of a swing saw assembly, a single condyle reciprocating saw assembly, a sternum reciprocating saw assembly and a bone drill assembly, and the functional head can be detachably butted on the power main body through a plug-in mounting mechanism. According to the bone power kit for the orthopedic surgery, one power main body can be matched with a plurality of functional heads through the inserting mechanism, so that the use cost of the orthopedic surgery can be greatly reduced; in addition, the swing saw assembly is simple in structure, few in part number and easy to assemble, the assembling time of the swing saw assembly can be greatly shortened, and therefore the manufacturing cost of the swing saw assembly can be greatly reduced.

Description

Technical Field

[0001] This utility model relates to the field of medical power tools, specifically to a bone power kit for orthopedic surgery. Background Technology

[0002] Orthopedic surgical power tools typically include: oscillating saws, thoracotomy reciprocating saws, sternal reciprocating saws, and bone drills. These tools are commonly used in orthopedic and trauma surgery, including joint replacement, arthroscopic surgery, joint resection and reconstruction, synovectomy, orthopedic plastic surgery, other joint surgeries, and tumor surgeries. They have a wide range of applications and complex usage methods. Currently, each existing orthopedic surgical power tool is independent, and each tool contains its own power unit, resulting in high operating costs. Utility Model Content

[0003] The technical problem to be solved by this utility model is to provide a bone dynamic kit for orthopedic surgery that can greatly reduce the cost of use.

[0004] To solve the above problems, the technical solution adopted by this utility model is as follows: a bone power kit for orthopedic surgery, comprising: a power body and a functional head. The functional head includes one or more of the following: a oscillating saw assembly, a unicompartment reciprocating saw assembly, a sternal reciprocating saw assembly, and a bone drill assembly. The functional head can be detachably connected to the power body via an insertion mechanism. The insertion mechanism includes: a cylinder liner assembly mounted on the housing of the power body, the front end of which extends out of the housing for inserting the functional head. An inner docking seat is provided in the cylinder liner assembly, and a cross groove is provided on the inner docking seat. An inner connector is provided on the front end of the drive shaft of the motor in the power body, and the inner connector passes through the center of the cross groove. The cylinder liner assembly has several spherical recesses arranged in a circular pattern on its outer front wall. Each recess contains a locking steel ball, which can extend into the cylinder liner assembly but cannot pass through the recesses and fall into the assembly. A limit ring is threaded onto the front end of the cylinder liner assembly. An annular groove is located behind the limit ring on the cylinder liner assembly. A locking sleeve is fitted between the groove and the limit ring. When the locking sleeve moves forward, it is blocked by the limit ring and cannot disengage from the cylinder liner assembly. A locking spring is fitted between the locking sleeve and the annular groove. Under the action, it will be pushed forward until it abuts against the limit ring. At this time, the locking collar blocks the outside of each locking steel ball, preventing the locking steel balls from moving outward. The functional head is equipped with a plug tube, and an outer docking seat is installed on the rear end of the plug tube. An anti-reverse ramp is provided on the outer wall of the plug tube, and a cross boss for insertion and positioning with the cross groove is provided on the outer docking seat. The rotating shaft for power transmission in the functional head is installed in the plug tube through a bearing. An outer connector is fixed on the rear end of the rotating shaft, and the outer connector extends out of the outer docking seat through the center of the cross boss. The functional head can be inserted into the front end of the cylinder liner assembly of the power body through the plug tube on it to dock with the power body. When connected, the locking collar can be driven by external force to overcome the spring force of the locking spring and move backward, so that the locking collar can move away from the outside of each locking steel ball. In this way, when the plug tube is inserted into the cylinder liner assembly, it can push each locking steel ball outward. After the plug tube is fully inserted, the functional head can be circumferentially positioned by the cross boss and cross groove relative to each other. The drive shaft and the rotating shaft can be driven by the inner joint and the outer joint relative to each other. Each locking steel ball can be located on the outside of the anti-reverse slope. After the external force is removed and the locking collar is reset under the action of the locking spring, each locking steel ball can not move outward under the obstruction of the locking collar and is blocked on the outside of the anti-reverse slope, so that the functional head and the power body cannot be separated.

[0005] Furthermore, in the aforementioned orthopedic surgical bone power kit, the structure of the oscillating saw assembly includes: a head shell, in which the oscillating saw shaft is rotatably and vertically mounted via bearings; a lower clamping plate located on the outer side of the head shell is provided on the upper end of the oscillating saw shaft; a through hole is provided in the oscillating saw shaft and the lower clamping plate; a pressure rod is movably inserted through the through hole of the oscillating saw shaft; an upper clamping plate is provided on the upper end of the pressure rod, the upper clamping plate being located above the lower clamping plate; a spring pressure cap is threadedly connected to the lower end of the pressure rod; a spring step is provided in the lower port of the oscillating saw shaft; a pressing spring is fitted on the pressure rod between the spring step and the spring pressure cap; the pressing spring abuts against the spring step, pushing the spring pressure cap downwards, so that the oscillating saw blade can be clamped between the upper and lower clamping plates and mounted on the end of the oscillating saw shaft through its rear end; and a cover is threadedly connected to the lower end of the head shell, covering the lower end of the pressure rod. The device features a circular sliding cover on one side, with a knob that can rotate left and right fitted onto its outer side. A circular slider that can slide up and down is installed inside the sliding cover, positioned below a spring cap. The slider's sidewall has an annular groove surrounding it. A spiral channel is located on each side of the sliding cover's sidewall, with an upper hole at each end. A vertical drive groove is located on each side of the knob's inner sidewall, and two lifting steel balls of equal height are also provided. The middle portions of the two lifting steel balls are located in the two spiral channels, and their outer portions are located in the two vertical drive grooves. The interiors of the two lifting steel balls are located in the annular grooves. When the knob is manually rotated clockwise in the unlocking direction, the knob... The two vertical drive slots rotate the two lifting steel balls together. These slots vertically avoid the two lifting steel balls, allowing them to be simultaneously lifted by the drive of their respective spiral channels. As the two lifting steel balls rotate along the annular grooves while being lifted, the slider rises under their drive, overcoming the spring force to lift the pressure rod. This causes the upper clamping plate to rise and open with the lower clamping plate. The two lifting steel balls are then driven to move simultaneously into the upper holes of their respective spiral channels. At this point, they are pressed and positioned in their respective upper holes, ensuring that the upper and lower clamping plates remain open even after the external force on the knob is removed, allowing for the installation of the oscillating saw. When the manual drive knob is rotated in the opposite direction of the locking position, the two lifting steel balls can simultaneously leave their respective upper holes under the action of external force. At this time, the two lifting steel balls will descend along their respective spiral channels, and the slider will also descend accordingly. The upper clamping plate will be reset and clamped against the lower clamping plate under the action of the pressing spring. The front end of the insertion tube is fixed to the rear end of the head shell. An eccentric wheel is set on the front end of the rotating shaft. A swing rod is also installed in the head shell. The front end of the swing rod is engaged with the swing saw shaft. A swing groove is set on the rear end of the swing rod. The eccentric wheel is located in the swing groove. After the rotating shaft is rotated under the drive of the motor in the power body, the eccentric wheel can drive the swing rod to swing left and right through the swing groove. After the swing rod swings left and right, it can drive the swing saw shaft to swing back and forth with the swing saw blade for sawing.

[0006] Furthermore, in the aforementioned orthopedic surgical bone dynamic kit, an anti-loosening spring is placed between the slider and the bottom of the slide cover. The lower ends of the two spiral channels are each provided with a lower end hole. When the manual drive knob is rotated in the opposite direction of the locking direction, the two lifting steel balls can be driven to move simultaneously into the lower end holes of their respective spiral channels. At this time, the slider can press the anti-loosening spring. Under the action of the anti-loosening spring, the two lifting steel balls can be pushed and positioned in their respective lower end holes, so that the knob can be positioned after the external force on the knob disappears.

[0007] Furthermore, in the aforementioned orthopedic surgical bone power kit, the upper surface of the lower clamp is provided with several mounting bosses, and the rear end of the oscillating saw blade is provided with mounting holes and clearance notches corresponding to each mounting boss. The mounting bosses are evenly arranged around the center of the lower clamp. When the rear end of the oscillating saw blade is placed between the two clamps, it can avoid the pressure bar through the clearance notches. The rear end of the oscillating saw blade can be positioned by inserting into each mounting hole through each mounting boss. Each mounting boss is elongated, and each mounting hole is large at both ends and narrow in the middle. The middle part of each mounting hole is used to fit tightly with the two sides of the mounting boss for positioning.

[0008] Furthermore, in the aforementioned orthopedic surgical bone power kit, an annular mounting groove is provided on the slide cover, and mounting screws that can be screwed into the annular mounting groove are threaded on both sides of the knob. The knob can be rotatably mounted on the slide cover by the two mounting screws cooperating with the annular mounting groove.

[0009] Furthermore, in the aforementioned bone power kit for orthopedic surgery, the bottom of the main body housing has a battery compartment for storing batteries that power the motor. The bottom opening of the battery compartment is closed by a cover plate, one end of which is hinged to the housing. Hooks are located on both sides of the cover plate; when the cover is closed, the two hooks can be hidden inside the battery compartment. On the left and right sides of the bottom opening of the battery compartment, there is an outward push button and a latch, respectively. The two latches are located inside the battery compartment, and the two outward push buttons are located outside the battery compartment. Each wall has an elongated hole. Two push buttons pass through one of the elongated holes and are fixed to their corresponding latches with screws. Pushing the push buttons drives the latches to move back and forth along the elongated holes. Behind each latch is a push spring. Both push springs can push their corresponding latches forward by abutting against the side wall of the battery compartment with their rear ends. When the cover is closed, the two latches can be inserted into the two locking hooks of the cover to lock the cover. When the two push buttons are driven by external force to pull the two latches back out of the two locking hooks, the cover can be unlocked.

[0010] Furthermore, in the aforementioned bone power kit for orthopedic surgery, a multi-stage planetary reducer is installed in the bone drill assembly. The multi-stage planetary reducer can convert the high speed and low torque transmitted from the rotating shaft into low speed and high torque, which is then output by its output shaft. The drill chuck is detachably installed on the outer end of the output shaft of the bone drill assembly and is used to install the drill bit.

[0011] Furthermore, in the aforementioned orthopedic surgical bone power kit, the unicompartment reciprocating saw assembly can convert the rotational motion of the rotating shaft into a back-and-forth reciprocating motion and output it through its output shaft, and the reciprocating saw blade is detachably mounted on the outer end of the output shaft of the unicompartment reciprocating saw assembly.

[0012] Furthermore, in the aforementioned orthopedic surgical bone power kit, the sternal reciprocating saw assembly can convert the rotational motion of the rotating shaft into a back-and-forth reciprocating motion, which is output by its output shaft. The reciprocating saw blade is installed on the outer end of the output shaft of the sternal reciprocating saw assembly. A bow-shaped saw blade protection frame and its front end stop are detachably installed on the front end of the housing of the sternal reciprocating saw assembly. A groove is provided on the front end stop. The front end of the reciprocating saw blade is inserted into the groove. When the reciprocating saw blade cuts back and forth, its front end is always located in the groove and protected by the front end stop.

[0013] Furthermore, in the aforementioned bone power kit for orthopedic surgery, the bone drill assembly allows the drill bit to pass through the center of the bone drill assembly from front to back by providing through holes on each of its axes, and the power body allows the drill bit to pass through the center of the power body from front to back by providing through holes on each of its axes and using a hollow shaft motor.

[0014] The advantages of this utility model are as follows: the bone power kit for orthopedic surgery, through the insertion mechanism, allows one power unit to be equipped with multiple functional heads, thereby greatly reducing the cost of orthopedic surgery; in addition, the oscillating saw assembly has a simple structure, few parts, and is easy to assemble, which can greatly simplify the assembly time of the oscillating saw assembly, thereby greatly reducing the manufacturing cost of the oscillating saw assembly; furthermore, the oscillating saw blade can be reliably installed after being fitted by the mounting holes and mounting bosses and clamped by two clamping plates. Attached Figure Description

[0015] Figure 1 This is a schematic diagram of the structure in which the oscillating saw assembly is inserted into the power unit.

[0016] Figure 2 for Figure 1 A cross-sectional structural diagram.

[0017] Figure 3 This is a schematic diagram of the structure of a single-bend reciprocating saw assembly.

[0018] Figure 4 This is a schematic diagram of the sternal reciprocating saw assembly.

[0019] Figure 5 This is a schematic diagram of the bone drill assembly.

[0020] Figure 6 This is a schematic diagram of the power unit.

[0021] Figure 7 This is a schematic diagram of the structure after removing the locking ring and the limiting ring from the power unit.

[0022] Figure 8 This is a schematic diagram of the battery compartment on the main power unit.

[0023] Figure 9 This is a three-dimensional structural diagram of the oscillating saw assembly.

[0024] Figure 10 A schematic diagram of the three-dimensional structure of the oscillating saw assembly after removing the knob.

[0025] Figure 11 for Figure 9 A cross-sectional structural diagram.

[0026] Figure 12 This is a schematic diagram of the oscillating saw shaft.

[0027] Figure 13 This is a schematic diagram of the compression bar.

[0028] Figure 14 This is a schematic diagram of the slide cover structure.

[0029] Figure 15 This is a schematic diagram of the knob.

[0030] Figure 16 This is a schematic diagram of the oscillating saw blade. Detailed Implementation

[0031] The present invention will now be described in further detail with reference to specific embodiments and accompanying drawings.

[0032] like Figure 1 , Figure 2 , Figure 3 , Figure 4 , Figure 5 , Figure 6 , Figure 7As shown, the orthopedic surgical bone power kit includes: a power unit 25 and a functional head. The functional head includes one or more of the following: an oscillating saw assembly 26, a unicompartment reciprocating saw assembly 27, a sternal reciprocating saw assembly 28, and a bone drill assembly 29. The functional head can be detachably connected to the power unit 25 via an insertion mechanism. The insertion mechanism includes: a cylinder liner assembly 30 mounted on the housing of the power unit 25. The front end of the cylinder liner assembly 30 extends out of the housing for inserting the functional head. An inner docking seat 31 is provided in the cylinder liner assembly 30. A cross-shaped groove 32 is provided on the cylinder liner assembly 30. An inner connector 33 is provided on the front end of the drive shaft of the motor in the power unit 25. The inner connector 33 extends through the center of the cross-shaped groove 32 into the inner cavity of the cylinder liner assembly 30. Four spherical recesses are arranged in a circumferential pattern on the outer wall of the front end of the cylinder liner assembly 30. A locking steel ball 34 is placed in each spherical recess. The locking steel ball 34 can extend into the inner cavity of the cylinder liner assembly 30, but cannot pass through the spherical recesses and fall into the inner cavity of the cylinder liner assembly 30. A threaded connection is provided on the front end of the cylinder liner assembly 30. A limiting ring 35 is provided. An annular groove 36 is provided on the cylinder liner assembly 30 behind the limiting ring 35. A locking ring 37 is fitted on the cylinder liner assembly 30 between the annular groove 36 and the limiting ring 35. When the locking ring 37 moves forward, it is blocked by the limiting ring 35 and cannot disengage from the cylinder liner assembly 30. A locking spring 38 is fitted between the locking ring 37 and the annular groove 36. Under the action of the locking spring 38, the locking ring 37 is pushed forward until it abuts against the limiting ring 35. At this point, the locking ring 37 blocks the various locking... The outer side of the steel ball 34 prevents the locking steel ball 34 from moving outward; the functional head is provided with a plug tube 39, and an outer docking seat 40 is installed on the rear port of the plug tube 39. An anti-reverse ramp 41 is provided on the outer side wall of the plug tube 39. The outer docking seat 40 is provided with a cross boss 42 for insertion and positioning with the cross groove 32. The rotating shaft for power transmission in the functional head is installed in the plug tube 39 through a bearing. An outer connector 43 is fixed on the rear end of the rotating shaft. The outer connector 43 extends out of the outer docking seat 40 through the center of the cross boss 42.The functional head can be inserted into the front port of the cylinder liner assembly 30 of the power unit 25 via its insertion pipe 39 to dock with the power unit 25. During docking, the locking ring 37 can be driven by external force to move backward against the elastic force of the locking spring 38, thereby allowing the locking ring 37 to move away from the outside of each locking steel ball 34. Thus, when the insertion pipe 39 is inserted into the cylinder liner assembly 30, it can push the locking steel balls 34 outward. After the insertion pipe 39 is fully inserted, the functional head can be circumferentially positioned by the cross boss 42 and the cross groove 32 engaging. The drive shaft and the rotating shaft can drive each other through the engagement of the inner connector 33 and the outer connector 43. Each locking steel ball 34 can be located outside the anti-reverse slope 41. After the external force is removed and the locking ring 37 is reset under the action of the locking spring 38, each locking steel ball 34 is blocked by the locking ring 37 and cannot move outward, thus preventing the functional head and the power unit 25 from disengaging.

[0033] By using an insertion mechanism, a single power unit 25 can be equipped with multiple functional heads, which can greatly reduce the cost of orthopedic surgery.

[0034] like Figure 9 , Figure 10 , Figure 11 , Figure 12 , Figure 13 , Figure 14 , Figure 15As shown, the structure of the oscillating saw assembly includes: a head shell 1, an oscillating saw shaft 2 rotatably mounted vertically in the head shell 1 via bearings, a lower clamping plate 3 located outside the head shell 1 on the upper end of the oscillating saw shaft 2, a through hole vertically penetrating the oscillating saw shaft 2 and the lower clamping plate 3, a pressure rod 4 movably passing through the through hole of the oscillating saw shaft 2, an upper clamping plate 5 on the upper end of the pressure rod 4, the upper clamping plate 5 being located above the lower clamping plate 3, a spring pressure cap 6 threadedly connected to the lower end of the pressure rod 4, a spring step 7 in the lower port of the oscillating saw shaft 2, and a pressing spring 8 fitted on the pressure rod 4 between the spring step 7 and the spring pressure cap 6. The pressing spring 8 pushes the spring pressure cap 6 downward against the spring step 7, allowing the oscillating saw blade 9 to be clamped in the upper clamping plate through its rear end. The saw is mounted on the end of the swing saw shaft 2 between the plate 5 and the lower clamping plate 3. A circular slide cover 10, which covers the outer side of the lower end of the pressure rod 4, is threaded onto the lower end of the head shell 1. A knob 11 that can rotate left and right is fitted on the outer side of the slide cover 10. A circular slider 12 that can slide up and down is installed in the slide cover 10. The slider 12 is located below the spring cap 6. An annular groove 13 is provided on the side wall of the slider 12. A spiral channel 14 is provided on each side of the side wall of the slide cover 10. An upper hole 15 is provided on the upper end of each of the two spiral channels 14. A vertical drive groove 16 is provided on each side of the inner side wall of the knob 11. Two lifting steel balls 17 of equal height are also provided. The middle of the two lifting steel balls 17 The two lifting steel balls 17 are respectively located in two spiral channels 14, and their outer parts are respectively located in two vertical drive grooves 16. The inner parts of the two lifting steel balls 17 are respectively located in annular grooves 13. After the manual drive knob 11 is rotated in the unlocking direction, the knob 11 can rotate together with the two lifting steel balls 17 through the two vertical drive grooves 16. At this time, the two vertical drive grooves 16 can vertically avoid the two lifting steel balls 17, so that the two lifting steel balls 17 can be lifted simultaneously under the drive of their respective spiral channels 14. Since the two lifting steel balls 17 can rotate along the annular grooves 13 while being lifted, the slider 12 can rise under the drive of the two lifting steel balls 17 and overcome the lifting pressure of the pressing spring 8. Rod 4 allows the upper clamping plate 5 to rise and open with the lower clamping plate 3. The two lifting steel balls 17 can be driven to move simultaneously into the upper end hole 15 of the spiral channel 14. At this time, the two lifting steel balls 17 can be pressed and positioned in their respective upper end holes 15, so that the upper clamping plate 5 and the lower clamping plate 3 can remain open after the external force on the knob 11 is removed, so as to install the swing saw blade 9. After manually driving the knob 11 to rotate in the opposite direction of the locking direction, the two lifting steel balls 17 can leave their respective upper end holes 15 under the action of external force. At this time, the two lifting steel balls 17 will descend along their respective spiral channels 14, and the slider 12 will also descend. The upper clamping plate 5 will be reset and clamped with the lower clamping plate 3 under the action of the pressing spring 8.The front end of the insertion tube 39 is fixedly connected to the rear port of the head shell 1. An eccentric wheel is provided on the front end of the rotating shaft. A swing arm is also installed in the head shell 1. The front end of the swing arm is engaged with the swing saw shaft 2. A swing groove is provided on the rear end of the swing arm, and the eccentric wheel is located in the swing groove. After the rotating shaft rotates under the drive of the motor in the power unit, the eccentric wheel can drive the swing arm to swing left and right through the swing groove. After the swing arm swings left and right, it can drive the swing saw shaft 2 to swing back and forth with the swing saw blade for sawing.

[0035] In this embodiment, an anti-loosening spring 18 is placed between the bottom of the slider 12 and the slide cover 10. The lower ends of the two spiral channels 14 are respectively provided with lower end holes 19. After the manual drive knob 11 is rotated in the opposite direction to the locking direction, the two lifting steel balls 17 can be driven to move simultaneously into the lower end holes 19 of their respective spiral channels 14. At this time, the slider 12 can press the anti-loosening spring 18. Under the action of the anti-loosening spring 18, the two lifting steel balls 17 can be pushed and positioned in their respective lower end holes 19, so that after the external force on the knob 11 disappears, the knob 11 can be positioned. With this configuration, when the oscillating saw drives the saw blade to cut, the knob 11 can be positioned and will not rotate freely.

[0036] like Figure 12 , Figure 16 As shown, seven mounting bosses 20 are provided on the upper surface of the lower clamping plate 3. The rear end of the oscillating saw blade 9 is provided with mounting holes 21 and clearance notches 22 corresponding to each mounting boss 20. The mounting bosses 20 are evenly distributed around the center of the lower clamping plate 3. When the rear end of the oscillating saw blade 9 is placed between the two clamping plates, it can avoid the pressure rod 4 through the clearance notches 22. The rear end of the oscillating saw blade 9 can be positioned by inserting each mounting boss 20 into each mounting hole 21. Each mounting boss 20 is elongated, and each mounting hole 21 is wider at both ends and narrower in the middle. The middle part of each mounting hole 21 is used for positioning in conjunction with the mounting boss 20. The wider ends and narrower middle of each mounting hole 21 make it easier and faster to insert the mounting bosses 20 into the mounting holes 21, thus making saw blade installation more convenient.

[0037] A circular groove 23 is provided on the lower end face of the upper clamping plate 5 to avoid the mounting bosses 20. The circular groove 23 does not hinder the upper clamping plate 5 from pressing the oscillating saw blade 9. The cross-section of the mounting bosses 20 is tapered, wider at the bottom and narrower at the top, so that even after the mounting holes 21 on the oscillating saw blade 9 wear and expand, they can still fit tightly with the mounting bosses 20. When the mounting holes 21 are not worn, the oscillating saw blade 9 does not contact the lower clamping plate 3 after installation. As the mounting holes 21 wear and expand, the oscillating saw blade 9 will gradually move down after installation until it contacts the lower clamping plate 3. This design can greatly extend the service life of the oscillating saw blade 9, so that the oscillating saw blade 9 will not be immediately scrapped due to minor wear of the mounting holes 21.

[0038] The aforementioned oscillating saw assembly has a simple structure, few parts, and is easy to assemble. The oscillating saw blade can be reliably installed by the cooperation of the mounting holes and mounting bosses, as well as by being clamped by two clamping plates. This greatly simplifies the assembly time of the oscillating saw assembly and thus significantly reduces the manufacturing cost of the oscillating saw assembly.

[0039] An annular mounting groove 24 is provided on the slide cover 10. Mounting screws that can be screwed into the annular mounting groove 24 are threaded on both sides of the knob 11. The knob 11 can be rotatably mounted on the slide cover 10 by cooperating with the annular mounting groove 24 through the two mounting screws. This arrangement facilitates the installation of the knob 11.

[0040] like Figure 8 As shown, the bottom of the housing of the power unit 25 is provided with a battery compartment 44 for storing batteries. The batteries are used to power the motor. The bottom opening of the battery compartment 44 is closed by a cover plate 45. One end of the cover plate 45 is hinged to the housing. Hooks 46 are provided on both the left and right sides of the cover plate 45. When the cover plate 45 is closed, the two hooks 46 can be hidden in the battery compartment 44. An outward push button 47 and a latch 48 are respectively provided on the left and right sides of the bottom opening of the battery compartment 44. The two latches 48 are located inside the battery compartment 44, and the two outward push buttons 47 are located outside the battery compartment 44. A [missing information - likely a number] is provided on the left and right side walls of the bottom opening of the battery compartment 44. Two external push buttons 47 pass through a long hole and are fixed to their corresponding latches 48 by screws. Pushing the external push buttons 47 drives the latches 48 to move back and forth along the long hole. A push spring 49 is provided behind each latch 48. Each push spring 49 pushes its corresponding latch 48 forward by abutting against the side wall of the battery compartment 44 at its rear end. This allows the latches 48 to be inserted into the two locking hooks 46 of the cover 45 after it is closed, thus locking the cover 45. External force drives the two external push buttons 47, causing the two latches 48 to retract from the two locking hooks 46, unlocking the cover 45. This installation structure facilitates battery installation.

[0041] The bone drill assembly 29 is equipped with a multi-stage planetary reducer, a conventional structure that converts high-speed, low-torque transmission from the rotating shaft into low-speed, high-torque output via its output shaft. A drill chuck is detachably mounted on the outer end of the output shaft of the bone drill assembly 29 and is used to mount the drill bit. Furthermore, the bone drill assembly 29 allows the drill bit to pass through its center from front to back through through holes on each of its shafts. Similarly, the power unit 25 allows the drill bit to pass through its center from front to back through through holes on each of its shafts and by using a hollow shaft motor. This configuration facilitates the use of long drill bits with the bone drill assembly 29.

[0042] The single-bone reciprocating saw assembly 27 can convert the rotational motion of the rotating shaft into a back-and-forth reciprocating motion, which is output by its output shaft. The reciprocating saw blade is detachably mounted on the outer end of the output shaft of the single-bone reciprocating saw assembly 27.

[0043] The sternal reciprocating saw assembly 28 can convert the rotational motion of the rotating shaft into a back-and-forth reciprocating motion and output it through its output shaft. The reciprocating saw blade is installed on the outer end of the output shaft of the sternal reciprocating saw assembly. A bow-shaped saw blade protection frame 50 and its front end stop 51 are detachably installed on the front end of the housing of the sternal reciprocating saw assembly. A slot is provided on the front end stop 51. The front end of the reciprocating saw blade is inserted into the slot. When the reciprocating saw blade cuts back and forth, its front end is always located in the slot and protected by the front end stop 51.

[0044] The structure in the single-compartment reciprocating saw assembly 27 and the sternal reciprocating saw assembly 28 that converts the rotational motion of the rotating shaft into a back-and-forth reciprocating motion is a conventional structure.

Claims

1. A bone-powered orthopedic surgical kit comprising: The system comprises a power unit and a functional head. The functional head includes one or more of the following: a oscillating saw assembly, a single-compartment reciprocating saw assembly, a sternal reciprocating saw assembly, and a bone drill assembly. The functional head can be detachably connected to the power unit via an insertion mechanism. The insertion mechanism includes: a cylinder liner assembly mounted on the housing of the power unit; the front end of the cylinder liner assembly extends out of the housing for inserting the functional head; an inner mating seat is provided in the cylinder liner assembly; a cross groove is provided on the inner mating seat; an inner connector is provided on the front end of the drive shaft of the motor in the power unit; the inner connector extends through the center of the cross groove into the inner cavity of the cylinder liner assembly; and several [unclear - possibly referring to a specific type of device] are provided on the outer wall of the front end of the cylinder liner assembly. A series of spherical recesses are arranged at intervals around the cylinder liner assembly. Each recess contains a locking steel ball, which can extend into the inner cavity of the cylinder liner assembly but cannot pass through the recesses and fall into the cylinder liner assembly's inner cavity. A limit ring is threaded onto the front end of the cylinder liner assembly. An annular groove is provided on the cylinder liner assembly behind the limit ring. A locking sleeve is fitted on the cylinder liner assembly between the annular groove and the limit ring. When the locking sleeve moves forward, it is blocked by the limit ring and cannot disengage from the cylinder liner assembly. A locking spring is fitted between the locking sleeve and the annular groove. Under the action of the locking spring, the locking sleeve is pushed forward until it abuts against the limit ring. The locking ring blocks the outer side of each locking steel ball, preventing the locking steel balls from moving outward. The functional head is equipped with a connector, and an outer mating seat is installed on the rear end of the connector. An anti-reverse ramp is provided on the outer wall of the connector, and a cross boss for insertion and positioning with the cross groove is provided on the outer mating seat. The power transmission rotating shaft in the functional head is mounted in the connector via a bearing. An outer connector is fixed to the rear end of the rotating shaft, and the outer connector extends out of the outer mating seat through the center of the cross boss. The functional head can be inserted into the front port of the cylinder liner assembly of the power unit via its connector for docking with the power unit. During docking, it can be driven by external force. The moving locking collar moves backward against the spring force of the locking spring, allowing the locking collar to move away from the outer side of each locking steel ball. This allows the insertion pipe to push the locking steel balls outward when it is inserted into the cylinder liner assembly. After the insertion pipe is fully inserted, the functional head can be circumferentially positioned by the cross boss and cross groove. The drive shaft and rotating shaft can be driven by the inner and outer joints. Each locking steel ball can be located on the outer side of the anti-reverse slope. After the external force is removed and the locking collar is reset under the action of the locking spring, each locking steel ball can not move outward due to the obstruction of the locking collar and is blocked on the outer side of the anti-reverse slope, thus preventing the functional head and the power body from disengaging.

2. The orthopedic surgical bone dynamic sleeve kit of claim 1, wherein: The structure of the oscillating saw assembly includes: a head shell; an oscillating saw shaft rotatably mounted vertically within the head shell via bearings; a lower clamping plate located outside the head shell on the upper end of the oscillating saw shaft; a through hole vertically penetrating the oscillating saw shaft and the lower clamping plate; a pressure rod movably passing through the through hole of the oscillating saw shaft; an upper clamping plate located on the upper end of the pressure rod, positioned above the lower clamping plate; a spring pressure cap threaded onto the lower end of the pressure rod; a spring step located at the lower end of the oscillating saw shaft; a pressing spring fitted onto the pressure rod between the spring step and the spring pressure cap; the pressing spring abuts against the spring step, pushing the spring pressure cap downwards, allowing the oscillating saw blade to be clamped between the upper and lower clamping plates and mounted on the end of the oscillating saw shaft via its rear end; and a threaded connection on the lower end of the head shell. A circular sliding cover covers the outer side of the lower end of the pressure rod. A knob that can rotate left and right is fitted onto the outer side of the sliding cover. A circular slider that can slide up and down is installed inside the sliding cover. The slider is located below the spring cap. An annular groove is arranged around the slider's side wall. A spiral channel is provided on each side of the sliding cover's side wall, and an upper hole is provided at the upper end of each spiral channel. A vertical drive groove is provided on each side of the inner side wall of the knob. Two lifting steel balls of equal height are also provided. The middle parts of the two lifting steel balls are located in the two spiral channels, and the outer parts are located in the two vertical drive grooves. The interiors of the two lifting steel balls are located in the annular grooves. The manual drive knob is rotated clockwise in the unlocking direction. After rotation, the knob can rotate along with the two lifting steel balls via two vertical drive slots. At this time, the two vertical drive slots can vertically avoid the two lifting steel balls, allowing them to be simultaneously lifted under the drive of their respective spiral channels. As the two lifting steel balls rotate along the annular groove while being lifted, the slider, driven by the two lifting steel balls, can rise and overcome the spring force of the pressing spring to lift the pressure rod, causing the upper clamping plate to rise and open with the lower clamping plate. The two lifting steel balls can then be driven to move simultaneously into the upper holes of their respective spiral channels. At this point, the two lifting steel balls can be pressed and positioned in their respective upper holes, ensuring that the upper and lower clamping plates remain open even after the external force on the knob is removed, allowing for the installation of the pendulum. Moving saw blade; after the manual drive knob is rotated in the opposite direction of the locking direction, the two lifting steel balls can simultaneously leave their respective upper holes under the action of external force. At this time, the two lifting steel balls will descend along their respective spiral channels, and the slider will also descend accordingly. The upper clamping plate will be reset under the action of the pressing spring and clamped against the lower clamping plate; the front end of the insertion tube is fixed to the rear port of the head shell. An eccentric wheel is set on the front end of the rotating shaft. A swing rod is also installed in the head shell. The front end of the swing rod is engaged with the swing saw shaft. A swing groove is set on the rear end of the swing rod. The eccentric wheel is located in the swing groove. After the rotating shaft is rotated under the drive of the motor in the power body, the eccentric wheel can drive the swing rod to swing left and right through the swing groove. After the swing rod swings left and right, it can drive the swing saw shaft to swing back and forth with the swing saw blade for sawing.

3. The orthopedic surgical bone dynamic sleeve kit of claim 2, wherein: An anti-loosening spring is placed between the slider and the bottom of the slide cover. The lower ends of the two spiral channels are respectively provided with lower end holes. After the manual drive knob is rotated in the opposite direction of locking, the two lifting steel balls can be driven to move simultaneously into the lower end holes of their respective spiral channels. At this time, the slider can press the anti-loosening spring. Under the action of the anti-loosening spring, the two lifting steel balls can be pushed and positioned in their respective lower end holes, so that the knob can be positioned after the external force on the knob disappears.

4. The orthopedic surgical bone dynamic sleeve kit of claim 2 or 3, wherein: Several mounting bosses are provided on the upper surface of the lower clamping plate. The rear end of the oscillating saw blade is provided with mounting holes and clearance notches that correspond one-to-one with each mounting boss. The mounting bosses are evenly arranged around the center of the lower clamping plate. When the rear end of the oscillating saw blade is placed between the two clamping plates, it can avoid the pressure bar through the clearance notches. The rear end of the oscillating saw blade can be positioned by inserting into each mounting hole through each mounting boss. Each mounting boss is elongated, and each mounting hole is large at both ends and narrow in the middle. The middle part of each mounting hole is used to fit tightly with the two sides of the mounting boss for positioning.

5. The orthopedic surgical bone dynamic sleeve kit of claim 2 or 3, wherein: An annular mounting groove is provided on the slide cover. On both sides of the knob, there are mounting screws that can be screwed into the annular mounting groove. The knob can be rotatably mounted on the slide cover by the two mounting screws cooperating with the annular mounting groove.

6. The orthopedic surgical bone dynamic sleeve kit of claim 1 or 2 or 3, wherein: The bottom of the main unit's casing has a battery compartment for storing the battery, which powers the motor. The bottom opening of the battery compartment is closed by a cover plate, one end of which is hinged to the casing. Hooks are located on both sides of the cover plate. When the cover is closed, the two hooks can be hidden inside the battery compartment. On the left and right sides of the bottom opening of the battery compartment, there is an outward push button and a latch. The two latches are located inside the battery compartment, while the two outward push buttons are located outside. An elongated hole is opened on each of the left and right side walls of the bottom opening of the battery compartment. The two outward push buttons pass through one of these holes and are fixed to their corresponding latches with screws. Pushing the outward push button drives the latch to move back and forth along the elongated hole. Behind each latch is a push spring. Both push springs push forward their corresponding latches by abutting against the side wall of the battery compartment. When the cover is closed, the two latches can be inserted into the two hooks of the cover to lock it. External force drives the two outward push buttons, along with the two latches, to retract from the hooks, unlocking the cover.

7. The orthopedic surgical bone dynamic sleeve kit of claim 1 or 2 or 3, wherein: The bone drill assembly is equipped with a multi-stage planetary reducer, which can convert the high speed and low torque transmitted from the rotating shaft into low speed and high torque and output it through its output shaft. The drill bit chuck is detachably installed on the outer end of the output shaft of the bone drill assembly and is used to install the drill bit.

8. The orthopedic surgical bone dynamic sleeve kit of claim 1 or 2 or 3, wherein: The single-bone reciprocating saw assembly can convert the rotational motion of the rotating shaft into a back-and-forth reciprocating motion, which is output by its output shaft. The reciprocating saw blade is detachably mounted on the outer end of the output shaft of the single-bone reciprocating saw assembly.

9. The orthopedic surgical bone dynamic sleeve kit of claim 1 or 2 or 3, wherein: The sternal reciprocating saw assembly can convert the rotational motion of the rotating shaft into a back-and-forth reciprocating motion, which is output by its output shaft. The reciprocating saw blade is installed on the outer end of the output shaft of the sternal reciprocating saw assembly. A bow-shaped saw blade protection frame and its front stop are detachably installed on the front end of the housing of the sternal reciprocating saw assembly. A slot is provided on the front stop. The front end of the reciprocating saw blade is inserted into the slot. When the reciprocating saw blade cuts back and forth, its front end is always located in the slot and protected by the front stop.

10. The orthopedic surgical bone dynamics kit according to claim 1, 2, or 3, characterized in that: The bone drill assembly allows the drill bit to pass through the center of the bone drill assembly from front to back by providing through holes on each of its axes, and the power unit allows the drill bit to pass through the center of the power unit from front to back by providing through holes on each of its axes and using a hollow shaft motor.

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