Intelligent skeleton fixing and resetting device suitable for orthopedic surgery

Abstract

The invention relates to the technical field of medical apparatus and instruments, and discloses an intelligent skeleton fixing and resetting device suitable for orthopedic surgery, comprising two hinged support arms, connecting arms rotatably mounted on the support arms, screw rods fixedly mounted on the connecting arms, and a threaded sleeve sleeved on the two screw rods, a first screw rod is arranged on the supporting arm, adjusting assemblies are arranged on the fixing column and the threaded sleeve, bone nail holes are formed in the mounting plate, and a quick release assembly is arranged on the mounting plate; the adjusting assembly comprises a plurality of gear rings which are distributed in a linear array mode. According to the intelligent skeleton fixing and resetting device suitable for the orthopedic surgery, the lever principle is used for amplifying the torsion generated when medical workers adjust the skeleton, the medical workers pull the operation handle to drive the adjusting gear to drive the gear rings, then labor-saving adjustment of the skeleton position is achieved, the physical burden of the medical workers during operation is relieved, different gear rings are selected during adjustment, and the adjustment efficiency is improved. And high-precision control on adjustment can be realized.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of medical devices, in particular to an intelligent bone fixation and reduction device suitable for orthopedic surgery. BACKGROUND

[0002] With the rapid development of China's transportation, construction and other industries, the number of fracture cases has risen sharply, with an annual incidence of millions or even tens of millions of cases. High-energy injury-induced displaced fractures account for a growing proportion. Such fractures are often accompanied by three-dimensional spatial displacement in the sagittal plane, horizontal plane, and coronal plane. Traditional open reduction and internal fixation surgery is the mainstream solution, but existing reduction devices have significant technical limitations. Most devices can only achieve two-dimensional reduction in a single plane, making it difficult to correct complex displacement in three-dimensional space simultaneously. This results in the need for repeated adjustments during surgery, prolonging the operation time, and insufficient anatomical reduction accuracy, which directly affects postoperative bone healing quality and joint function recovery.

[0003] According to the search, a three-dimensional fracture reduction device with publication number CN102551854A is disclosed, which is composed of a left support rod, a right support rod, a left pull rod, a right pull rod, a horizontal pull rod, a left fixed block, and a right fixed block. The left support rod and the right support rod are rods with a bend in the middle, connected by a shaft at one end. The horizontal pull rod is an adjustable length pull rod, connected between the left and right support rods. The other ends of the left and right support rods are connected to the left and right pull rods, respectively. The left and right pull rods are adjustable length pull rods, and the other ends of the left and right pull rods are connected to the left and right fixed blocks, respectively. Bone connecting devices with adjustable height are installed on the left and right fixed blocks.

[0004] In view of the above and existing related technologies, the inventors believe that the following defects often exist: During the process of bone reduction and fixation, the position of the bone needs to be adjusted and then fixed again. However, when moving the bone and adjusting its position, a lot of force is often needed, and it is usually very laborious to align the bone or adjust the bone position. The bone reduction and fixation device described above also needs to exert a large torque to change the position between the lead screws when adjusting the position of the bone. Such laborious operation makes the device not very convenient to use, and puts high demands on the physical strength of the surgical personnel. SUMMARY

[0005] The technical problem to be solved by the present application is the laborious operation during bone reduction and fixation in the prior art. Therefore, we propose an intelligent bone fixation and reduction device suitable for orthopedic surgery.

[0006] In order to achieve the above object, the technical scheme adopted by the present application is as follows: the intelligent bone fixation and reduction device suitable for orthopedic surgery comprises two hingedly connected support arms, a connecting arm is rotatably installed on the support arm, a lead screw is fixedly installed on the connecting arm, a threaded sleeve is sleeved on the two lead screws, an internal thread matched with the lead screw is formed in the threaded sleeve, the internal threads at the two ends of the threaded sleeve are oppositely arranged, a threaded hole is formed in the support arm, a screw rod one is screwed in the threaded hole, a fixed column is fixedly installed at the other end of the screw rod one, a rotating rod is fixedly installed at the other end of the fixed column, a support plate is fixedly installed at the other end of the rotating rod, a screw rod two is screwed on the support plate, an installation plate is rotatably installed at the bottom of the screw rod two, a rotating handle is fixedly installed at the other end of the screw rod two, an adjusting assembly is arranged on the rotating handle, the fixed column and the threaded sleeve, a bone nail hole is formed in the installation plate, and a quick release assembly is arranged on the installation plate. The adjusting assembly comprises a plurality of tooth rings arranged in a linear array, the plurality of tooth rings are sequentially arranged from small to large in radius, and the rotating handle, the fixed column and the threaded sleeve are fixedly connected with the tooth rings, a protective shell matched with the tooth rings is rotatably sleeved outside the tooth rings, a fixing mechanism is arranged on the protective shell, an adjusting opening matched with the tooth rings is formed in the protective shell, an adjusting gear is arranged at the adjusting opening, an installation rod is rotatably installed on the adjusting gear, an operating handle is fixedly installed on the installation rod, a connecting mechanism is arranged between the adjusting gear and the protective shell, and a ratchet mechanism is arranged between the adjusting gear and the installation rod.

[0007] Preferably, the ratchet mechanism comprises a ratchet wheel fixedly installed on the adjusting gear, an installation groove is formed in a position corresponding to the ratchet wheel on the inner side wall of the installation rod, a pawl matched with the ratchet wheel is rotatably installed in the installation groove, and an elastic plate is fixedly installed between the pawl and the inner side wall of the installation groove.

[0008] Preferably, the connecting mechanism comprises a rotating hole symmetrically formed in the inner side wall of the adjusting opening, rotating shafts are symmetrically arranged on the two sides of the adjusting gear, relief grooves are symmetrically formed on the two sides of the adjusting gear, the relief grooves are slidably connected with the rotating shafts, springs are fixedly installed between the adjusting gear and the rotating shafts, and an installation mechanism is arranged on the rotating shaft.

[0009] Preferably, the installation mechanism comprises a sliding frame slidably sleeved on the installation rod, a pressing rod corresponding to the rotating shaft is fixedly installed at the bottom of the sliding frame, and a trapezoidal groove matched with the pressing rod is formed in the rotating shaft.

[0010] Preferably, an inclined portion matched with the trapezoidal groove is fixedly installed at the bottom of the pressing rod, and the inclined portion is slidably connected with the trapezoidal groove.

[0011] Preferably, the mounting rod is symmetrically fixed with a guide rod connected with the pressing rod.

[0012] Preferably, the fixing mechanism comprises a sleeve, the screw rod, the screw rod one and the screw rod two are rotationally connected with the sleeve, the sleeve is fixed with a positioning rod, the supporting arm, the connecting arm and the supporting plate are slidably connected with the positioning rod, the protection shell is fixed with a connecting pipe, the connecting pipe is rotationally sleeved on the sleeve, the connecting pipe is provided with a screw hole matched with the sleeve, and the screw hole is screwed with a bolt.

[0013] Preferably, the quick release assembly comprises a rotating plate rotationally mounted on the mounting plate, the mounting plate is provided with a slot matched with the rotating plate, and the rotating plate and the mounting plate are provided with a locking mechanism.

[0014] Preferably, the locking mechanism comprises positioning holes formed in the mounting plate and the rotating plate, and the positioning holes are slidably mounted with a positioning pin.

[0015] Preferably, the operating handle is made of a telescopic rod.

[0016] Technical effects and advantages of the present application: In the present application, the operating handle, the gear ring and the adjusting gear are arranged, the torque during adjustment is amplified by using the lever principle, the operating handle is rotated around the rotating shaft, the adjusting gear drives the gear ring, the labor of the medical staff is reduced during the adjustment, and the same rotating amplitude can be used to realize different amplitude adjustment, high-precision control is realized, and the requirement for adjustment accuracy during the bone resetting process is met. In the present application, the pawl and the ratchet wheel are arranged, the adjusting gear is rotated by the movement of the mounting rod, when the mounting rod is reversely rotated to one end of the adjusting port, the pawl is outwardly spaced under the action of the ratchet wheel and is reset under the action of the elastic plate, and the gear ring can be continuously adjusted without repeatedly taking down the mounting rod. In the present application, the sliding frame, the pressing rod and the trapezoidal groove are arranged, the sliding frame drives the pressing rod to press the trapezoidal groove on the rotating shaft, the adjusting gear is conveniently put into the adjusting port, the installation of the adjusting gear is completed, and the tightness adjustment can be conveniently and smoothly switched by reversely installing, so that the flexibility and efficiency of the device are improved. In the present application, the rotating plate and the mounting plate are arranged, the device body can be taken down without taking down the bone nail by taking down the positioning pin and rotating the rotating plate, and the fixing operation is facilitated after the bone position adjustment is completed. BRIEF DESCRIPTION OF DRAWINGS

[0017] The disclosure of the present application will be described with reference to the accompanying drawings. It is to be noted that the drawings are only for the purpose of illustration and are not intended to limit the scope of protection of the present application. In the drawings, the same reference numerals are used to refer to the same components: Figure 1 is a structural schematic diagram of the present application; Figure 2 is a partial cross-sectional structural schematic diagram of the present application; Figure 3 is a partial exploded structural schematic diagram of the present application; Figure 4 is an exploded structural schematic diagram of the ratchet mechanism of the present application; Figure 5 is an enlarged structural schematic diagram of A in Figure 2 Figure 6 is an enlarged structural schematic diagram of B in Figure 2 Figure 7 is a structural schematic diagram of the quick release assembly of the present application.

[0018] Legend: 1, support arm; 2, connecting arm; 21, screw rod; 22, threaded sleeve; 3, screw rod one; 31, fixed column; 32, rotating rod; 33, support plate; 34, screw rod two; 35, mounting plate; 4, tooth ring; 41, protective shell; 42, adjusting port; 43, adjusting gear; 44, mounting rod; 45, operating handle; 5, ratchet wheel; 51, mounting groove; 52, pawl; 53, elastic plate; 6, rotating hole; 61, rotating shaft; 62, spring; 63, guide rod; 64, sliding frame; 65, pressing rod; 66, clearance groove; 67, trapezoidal groove; 7, sleeve ring; 71, positioning rod; 72, connecting pipe; 73, screw hole; 74, bolt; 8, bone screw hole; 81, rotating plate; 82, positioning hole; 83, positioning pin. DETAILED DESCRIPTION

[0019] It is easy to understand that, according to the technical solution of the present application, those skilled in the art can propose a plurality of structure modes and implementation modes that can be replaced with each other without changing the essential spirit of the present application. Therefore, the following detailed description and the drawings are only exemplary descriptions of the technical solution of the present application, and should not be considered as the whole or as a limitation or restriction on the technical solution of the present application.

[0020] Reference Figures 1 to 7 ​​As shown, the present application provides a technical scheme: an intelligent bone fixation and reduction device suitable for orthopedic surgery, comprising two hingedly connected support arms 1, a connecting arm 2 is rotatably installed on the support arm 1, a lead screw 21 is fixedly installed on the connecting arm 2, a threaded sleeve 22 is sleeved on the two lead screws 21, an internal thread matched with the lead screw 21 is formed in the threaded sleeve 22, and the internal threads at both ends of the threaded sleeve 22 are oppositely arranged, a threaded hole is formed in the support arm 1, a screw rod 3 is screwed in the threaded hole, a fixed column 31 is fixedly installed at the other end of the screw rod 3, a rotating rod 32 is fixedly installed at the other end of the fixed column 31, a support plate 33 is fixedly installed at the other end of the rotating rod 32, a screw rod 34 is screwed on the support plate 33, a mounting plate 35 is rotatably installed at the bottom of the screw rod 34, a handle is fixedly installed at the other end of the screw rod 34, an adjusting assembly is arranged on the handle, the fixed column 31 and the threaded sleeve 22, a bone screw hole 8 is formed in the mounting plate 35, and a quick release assembly is arranged on the mounting plate 35. The adjusting assembly comprises a plurality of tooth rings 4 arranged in a linear array, the plurality of tooth rings 4 are arranged in order from small to large radius, and the handle, the fixed column 31 and the threaded sleeve 22 are fixedly connected with the tooth rings 4, a protective shell 41 matched with the tooth rings 4 is rotatably sleeved on the tooth rings 4, a fixing mechanism is arranged on the protective shell 41, an adjusting opening 42 matched with the tooth rings 4 is formed in the protective shell 41, an adjusting gear 43 is arranged at the adjusting opening 42, an installation rod 44 is rotatably installed on the adjusting gear 43, an operating handle 45 is fixedly installed on the installation rod 44, a connecting mechanism is arranged between the adjusting gear 43 and the protective shell 41, and a ratchet mechanism is arranged between the adjusting gear 43 and the installation rod 44.

[0021] Referring to Figure 4 The ratchet mechanism comprises a ratchet wheel 5 fixedly installed on the adjusting gear 43, an installation groove 51 is formed in a position corresponding to the ratchet wheel 5 on the inner side wall of the installation rod 44, a pawl 52 matched with the ratchet wheel 5 is rotatably installed in the installation groove 51, and an elastic plate 53 is fixedly installed between the pawl 52 and the inner side wall of the installation groove 51.

[0022] Referring to Figure 4 and Figure 5As shown, the connecting mechanism comprises rotating holes 6 symmetrically provided on the inner side wall of the adjusting opening 42, rotating shafts 61 symmetrically provided on both sides of the adjusting gear 43, and clearance grooves 66 symmetrically provided on both sides of the adjusting gear 43 and in sliding connection with the rotating shafts 61, springs 62 fixedly installed between the adjusting gear 43 and the rotating shafts 61, and installation mechanisms provided on the rotating shafts 61; the installation mechanisms comprise sliding frames 64 slidably sleeved on the installation rods 44, pressing rods 65 fixedly installed at the bottom of the sliding frames 64 and corresponding to the rotating shafts 61, and trapezoidal grooves 67 provided on the rotating shafts 61 and matched with the pressing rods 65; the pressing rods 65 are fixedly installed with inclined portions matched with the trapezoidal grooves 67 and in sliding connection with the trapezoidal grooves 67; the installation rods 44 are symmetrically fixedly installed with guide rods 63 in sliding connection with the pressing rods 65.

[0023] Referring to Figure 6 As shown, the fixing mechanism comprises a sleeve ring 7, the lead screw 21, the screw rod one 3 and the screw rod two 34 are all in rotational connection with the sleeve ring 7, the sleeve ring 7 is fixedly installed with a positioning rod 71, the supporting arm 1, the connecting arm 2 and the supporting plate 33 are in sliding connection with the positioning rod 71, the protective shell 41 is fixedly installed with a connecting pipe 72, the connecting pipe 72 is rotatably sleeved on the sleeve ring 7, the connecting pipe 72 is provided with screw holes 73 matched with the sleeve ring 7, and the screw holes 73 are in threaded installation with bolts 74; the operation handle 45 is made of a telescopic rod.

[0024] Referring to Figure 7 As shown, the quick release assembly comprises a rotating plate 81 rotatably installed on an installation plate 35, the installation plate 35 is provided with a missing slot matched with the rotating plate 81, and the rotating plate 81 and the installation plate 35 are provided with a locking mechanism; the locking mechanism comprises positioning holes 82 provided on the installation plate 35 and the rotating plate 81, and the positioning holes 82 are in sliding installation with positioning pins 83.

[0025] Working principle: in use, the bone nail and the like are passed through the bone nail hole 8 to be fixed with the bone to be fixed and reset, the adjusting gear 43 is placed into the adjusting opening 42, so that the rotating shafts 61 are in rotational connection with the rotating holes 6, at this time, the medical staff can pull the operation handle 45 to make it rotate around the rotating shafts 61, and utilize the lever principle to drive the adjusting gear 43 to drive the toothed ring 4 engaged therewith, the toothed ring 4 can drive the rotating handle, the fixed column 31 and the threaded sleeve 22 to rotate when rotating, respectively adjust the lengths of the lead screw 21, the screw rod one 3 and the screw rod two 34, and further adjust the position of the bone, the operation handle 45 amplifies the torsion of the medical staff when adjusting, and further realizes the labor-saving adjustment of the position of the bone. In the process of applying the operating handle 45 to drive the adjusting gear 43, the pawl 52 and the ratchet wheel 5 are engaged when the force is applied, and the adjusting gear 43 can be driven to rotate when the mounting rod 44 moves; when the mounting rod 44 moves to one end of the adjusting port 42, the mounting rod 44 is reversely rotated, at this time, the pawl 52 is outwardly positioned under the action of the ratchet wheel 5 and is reset under the action of the elastic plate 53, thereby the tooth ring 4 can be adjusted without repeatedly taking down the mounting rod 44, and the tooth ring 4 can be conveniently and continuously adjusted, and different tooth rings 4 can be selected during the adjustment, thereby the adjustment with different amplitudes can be realized under the same rotation amplitude, so that the high-precision control can be realized during the adjustment. By pressing the sliding frame 64 downward, the pressing rod 65 can be driven to press the trapezoidal groove 67 on the rotating shaft 61 downward, so that the rotating shaft 61 slides into the positioning groove 66 and compresses the spring 62, so that the adjusting gear 43 can be conveniently placed into the adjusting port 42; the sliding frame 64 is released, and the rotating shaft 61 can be popped into the rotating hole 6 under the action of the spring 62, so that the installation of the adjusting gear 43 is realized, and when the tightness is adjusted, the adjusting gear 43 only needs to be taken down and reversely installed, after the reverse installation, the direction of the ratchet wheel 5 is opposite to the tooth ring 4, so that the tightness adjustment can be smoothly and conveniently realized. By taking down the positioning pin 83 and rotating the rotating plate 81, the device body can be taken down without taking down the bone nail, so that the fixation can be conveniently realized after the adjustment of the bone position is completed, and the adjustment device can be conveniently taken down after the fixation, so that the fixation and reset of the bone can be smoothly realized, and the effect of labor saving can be further increased.

[0026] The technical scope of the present application is not limited to the above description, and those skilled in the art can make various modifications and changes to the above embodiments without departing from the technical idea of the present application, and these modifications and changes should be within the protection scope of the present application.

Claims

1. An intelligent bone fixation and repositioning device suitable for orthopedic surgery, characterized in that, The device includes two hinged support arms (1), a connecting arm (2) rotatably mounted on each support arm (1), a lead screw (21) fixedly mounted on each connecting arm (2), and a threaded sleeve (22) fitted onto each of the two lead screws (21). The threaded sleeve (22) has an internal thread that matches the lead screw (21), and the internal threads at both ends of the threaded sleeve (22) are arranged in opposite directions. The support arm (1) has a threaded hole, and a screw rod (3) is screwed into the threaded hole. A fixing post (3) is fixedly mounted on the other end of the screw rod (3). 1) A rotating rod (32) is fixedly installed at the other end of the fixed column (31), and a support plate (33) is fixedly installed at the other end of the rotating rod (32). A screw rod (34) is screwed onto the support plate (33). An mounting plate (35) is rotatably installed at the bottom of the screw rod (34). A throttle is fixedly installed at the other end of the screw rod (34). An adjustment assembly is provided on the throttle, the fixed column (31), and the threaded sleeve (22). A bone screw hole (8) is opened on the mounting plate (35). A quick-release assembly is provided on the mounting plate (35). The adjustment assembly includes several toothed rings (4) arranged in a linear array. The toothed rings (4) are arranged in order from small to large radius. The throttle, the fixed column (31), and the threaded sleeve (22) are all fixedly connected to the toothed rings (4). The toothed rings (4) are rotated and fitted with a protective shell (41) that is compatible with them. The protective shell (41) is provided with a fixing mechanism. The protective shell (41) is provided with an adjustment port (42) that is compatible with the toothed rings (4). An adjustment gear (43) is provided at the adjustment port (42). An installation rod (44) is rotatably mounted on the adjustment gear (43). An operating handle (45) is fixedly mounted on the installation rod (44). A connection mechanism is provided between the adjustment gear (43) and the protective shell (41). A ratchet mechanism is provided between the adjustment gear (43) and the installation rod (44).

2. The intelligent bone fixation and repositioning device for orthopedic surgery according to claim 1, characterized in that: The ratchet mechanism includes a ratchet (5) fixedly mounted on an adjusting gear (43). An installation groove (51) is provided on the inner wall of the mounting rod (44) at a position corresponding to the ratchet (5). A pawl (52) adapted to the ratchet (5) is rotatably mounted in the installation groove (51). An elastic plate (53) is fixedly mounted between the pawl (52) and the inner wall of the installation groove (51).

3. The intelligent bone fixation and repositioning device for orthopedic surgery according to claim 1, characterized in that: The connecting mechanism includes rotating holes (6) symmetrically opened on the inner sidewall of the adjusting port (42), rotating shafts (61) symmetrically arranged on both sides of the adjusting gear (43), and relief grooves (66) symmetrically opened on both sides of the adjusting gear (43). The relief grooves (66) are slidably connected to the rotating shafts (61). A spring (62) is fixedly installed between the adjusting gear (43) and the rotating shafts (61). An installation mechanism is provided on the rotating shafts (61).

4. The intelligent bone fixation and repositioning device for orthopedic surgery according to claim 3, characterized in that: The installation mechanism includes a sliding frame (64) that is slidably fitted on the installation rod (44). A pressure rod (65) corresponding to the rotating shaft (61) is fixedly installed at the bottom of the sliding frame (64). A trapezoidal groove (67) adapted to the pressure rod (65) is provided on the rotating shaft (61).

5. The intelligent bone fixation and repositioning device for orthopedic surgery according to claim 4, characterized in that: The bottom of the pressure rod (65) is fixedly installed with an inclined part that is adapted to the trapezoidal groove (67), and the inclined part is slidably connected to the trapezoidal groove (67).

6. The intelligent bone fixation and repositioning device for orthopedic surgery according to claim 5, characterized in that: The mounting rod (44) is symmetrically fixed on both sides with guide rods (63) that are slidably connected to the pressure rod (65).

7. The intelligent bone fixation and repositioning device for orthopedic surgery according to claim 1, characterized in that: The fixing mechanism includes a collar (7), the lead screw (21), the first screw (3) and the second screw (34) are rotatably connected to the collar (7), a positioning rod (71) is fixedly installed on the collar (7), the support arm (1), the connecting arm (2) and the support plate (33) are slidably connected to the positioning rod (71), a connecting pipe (72) is fixedly installed on the protective shell (41), the connecting pipe (72) is rotatably fitted on the collar (7), the connecting pipe (72) has a screw hole (73) adapted to the collar (7), and a bolt (74) is installed in the screw hole (73).

8. The intelligent bone fixation and repositioning device for orthopedic surgery according to claim 1, characterized in that: The quick-release assembly includes a rotating plate (81) rotatably mounted on the mounting plate (35), the mounting plate (35) having a notch adapted to the rotating plate (81), and a locking mechanism being provided between the rotating plate (81) and the mounting plate (35).

9. The intelligent bone fixation and repositioning device for orthopedic surgery according to claim 8, characterized in that: The locking mechanism includes a positioning hole (82) formed on the mounting plate (35) and the rotating plate (81), and a positioning pin (83) is slidably installed in the positioning hole (82).

10. The intelligent bone fixation and repositioning device for orthopedic surgery according to claim 1, characterized in that: The operating handle (45) is made of a telescopic rod.

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