Electric fracture reduction ejector rod and reduction method

Abstract

The invention discloses an electric fracture reduction ejector rod. The ejector rod at least comprises a supporting rod and a push-pull chuck arranged at the front end of the supporting rod. The push-pull chuck is composed of a base plate fixed to the front end of the supporting rod and a movable plate which is movably arranged at the front end of the push-pull chuck and can move in the axial direction of the supporting rod. When the movable plate is tightly attached to the base plate, the push-pull chuck forms a pushing face, and the pushing action is achieved. When the movable plate is separated from the base plate, the push-and-pull chuck can achieve clamping, pushing and pulling actions on bones through opposite clamping of the movable plate and the base plate. The key point of the invention lies in the design of the integrated push-pull chuck, the integration of multiple reset functions such as pushing, pulling, clamping and the like is realized, the replacement of instruments is effectively reduced, and the operation efficiency, accuracy and safety are improved.

Description

TECHNICAL FIELD

[0001] The present application relates to the field of orthopedic surgical instruments, in particular to an electric fracture reduction rod and a reduction method. BACKGROUND

[0002] Fracture reduction push rod is a commonly used basic tool in orthopedic surgery, mainly used for manual reduction or assisted reduction of fracture fragments. It is usually composed of an elongated rod part and a head part for contacting the bone. The doctor holds the rod body and places the head on the fracture fragment that needs to be reduced to apply a pushing force to correct the displacement of the fracture and restore the normal anatomical alignment of the bone. This type of instrument is characterized by its simple and direct mechanical action and is an indispensable part of fracture surgery.

[0003] The types of fracture reduction push rods currently used in clinical practice are relatively single, mainly divided into straight push rods and curved push rods according to the shape of the rod body. Straight push rods are suitable for shallow surface and relatively linear fracture reduction, and the operation is direct and the force is concentrated. The curved push rod is designed for deep body or complex anatomical structure, which allows the doctor to bypass obstacles and apply force to the fracture fragments at a specific angle, but regardless of the type, the core function is limited to single "push".

[0004] In fracture surgery, the core basic operation of pushing and pulling the fracture end (belonging to fracture reduction technology) is mainly used to correct the displacement of the fracture (such as angulation, lateral, shortening, rotation, etc.), so that the broken bone can restore normal anatomical position or functional position. In actual surgery, different types of fractures require corresponding appropriate surgical operation methods, and even multiple operation methods may be involved in a single surgical procedure.

[0005] The main force of the existing reduction push rod is "push", which is difficult to assist in completing multiple operations of fracture reduction (such as push, pull, and apposition). SUMMARY

[0006] The purpose of the present application is to provide an electric fracture reduction rod, which aims to solve the problem of single function and frequent tool replacement of existing orthopedic reduction tools during fracture reduction.

[0007] To solve the above technical problems, the present application specifically provides the following technical solutions: An electric fracture reduction rod, comprising: a support rod, a hollow channel is formed inside, and a driving member is arranged in the hollow channel; The push-pull chuck has a fixed base plate and a movable plate. The fixed base plate is fixedly arranged on the outer wall of one end of a support rod, and has a first clamping surface and a first force applying surface which are perpendicular to the axial direction of the support rod. The first clamping surface and the first force applying surface are respectively located on the two sides of the fixed base plate along the axial extension direction of the support rod. The movable plate has a second clamping surface and a second force applying surface which are respectively parallel to and opposite to the first clamping surface and the second clamping surface. One end of the movable plate is fixedly connected to the end of the driving member which extends out of the support rod, and the movable plate can be driven by the driving member to move close to or away from the fixed base plate. A reduction motor is arranged at the other end of the support rod. A screw rod is fixedly connected to the output shaft of the reduction motor and extends into the inner side of the support rod. The corresponding end of the driving member is provided with a toothed sleeve for cooperating with the screw rod. The rotational movement of the screw rod is converted into the axial movement of the driving member in the support rod through the toothed sleeve. A guide mechanism is arranged between the outer side of the driving member and the inner side of the support rod to prevent the driving member from rotating in the support rod.

[0008] Further, a hand handle is fixedly arranged at the other end of the support rod, and the reduction motor is arranged in the hand handle.

[0009] Further, the driving member is a solid straight rod.

[0010] Further, the driving member is a plurality of twisted steel wires. Assembly gaps are reserved between the plurality of twisted steel wires and the inner wall of the support rod for axial sliding of the plurality of twisted steel wires.

[0011] Further, a support steel pipe is fixedly sleeved on the outer side of the front end of the plurality of twisted steel wires. The support steel pipe is tightly arranged on the front end of the plurality of twisted steel wires. Assembly gaps are also reserved between the outer wall of the support steel pipe and the inner wall of the support rod for axial sliding of the support steel pipe. The end of the support steel pipe which extends out of the support rod is fixedly connected to the movable plate.

[0012] Further, another support steel pipe is fixedly sleeved on the rear end of the plurality of twisted steel wires. The toothed sleeve is fixedly embedded in the end of the support steel pipe. A distance is reserved between the plurality of twisted steel wires and the toothed sleeve for movement of the screw rod.

[0013] Further, the guide mechanism is a guide groove and a guide strip. The guide strip and the guide groove are respectively formed on the inner wall of the support rod and the outer wall of the driving member and cooperate with each other.

[0014] Further, a control circuit board is arranged in the hand handle. The reduction motor is electrically connected to the control circuit board. A motor control button for controlling the forward and reverse rotation of the reduction motor is arranged on the outer side of the hand handle and electrically connected to the control circuit board. A battery compartment for mounting a battery is further arranged at the tail of the hand handle.

[0015] Further, the control circuit board is integrated with an overload protection circuit for stopping the operation of the deceleration motor.

[0016] A reduction method of an electric fracture reduction push rod, the reduction method comprising: a pushing reduction method, a pulling reduction method, a clamping reduction method and an assisted pushing reduction method; The pushing reduction method is that the movable plate and the fixed base plate are tightly attached to form an integrated pushing surface, and an overall axial pushing force is applied to the fracture block through the second force applying surface for reduction; The pulling reduction method is that the first force applying surface is abutted on the fracture block to apply an overall axial pulling force for reduction, and the motor does not need to be adjusted during the process; The clamping reduction method is that the fracture block is placed between the movable plate and the fixed base plate, and the control button on the handle is operated to drive the deceleration motor, and the first clamping surface and the second clamping surface are used to clamp the fracture block; The assisted pushing reduction method is that the movable plate provides additional and fine pushing force on the basis of the overall pushing to achieve more accurate reduction effect by operating the driving member; The fracture reduction method is to execute any one or several of the pushing reduction method, the pulling reduction method, the clamping reduction method and the assisted pushing reduction method, and the executed reduction method is not limited in the number of executions according to the reduction needs.

[0017] The beneficial effects of the present application are that the motor screw transmission mechanism integrated in the push rod provides accurate axial movement for the driving member, and the clamping function and the conventional manual pushing and pulling function are integrated. This design not only retains the advantages of intuitive and labor-saving operation of the traditional push rod, but also introduces the high-precision clamping and auxiliary pushing function of electric control. It effectively solves the problem of single instrument function limitation, so that the doctor does not need to frequently change tools. BRIEF DESCRIPTION OF DRAWINGS

[0018] In order to more clearly illustrate the embodiments of the present application or the technical solutions in the prior art, the following will briefly introduce the drawings needed to be used in the embodiments or prior art description. Obviously, the drawings in the following description are only exemplary, and those skilled in the art can obtain other implementation drawings according to the provided drawings without creating any creative labor.

[0019] Figure 1 It is a perspective view of the embodiment of the present application; Figure 2 It is a top view of the embodiment of the present application; Figure 3 It is a plane sectional view of the embodiment of the present application; Figure 4 It is a perspective sectional view of one end of the push-pull chuck of the embodiment of the present application; Figure 5 is a planar sectional view of the push-pull clamp head of the embodiment of the present application; Figure 6 is a perspective sectional view of one end of the handgrip of the embodiment of the present application; Figure 7 is Figure 3 is a planar sectional view along line A-A; Figure 8 is a planar sectional view of the end of the handle of the embodiment of the present application; The reference numerals in the drawings represent the following: 1 - support rod; 2 - base plate; 2a - first clamping surface; 2b - first force applying surface; 3 - movable plate; 3a - second clamping surface; 3b - second force applying surface; 4 - driving member; 5 - support steel tube; 6 - handgrip; 7 - speed reduction motor; 8 - screw rod; 9 - dental brace; 10 - micro coupling; 11 - cylindrical cavity; 12 - metal inner liner; 13 - silica gel outer liner; 14 - front cavity; 15 - middle cavity; 16 - rear cavity; 17 - limiting tube column; 18 - tail cover; 19 - limiting sleeve; 20 - rib; 21 - rib groove; 22 - control circuit board; 23 - battery compartment; 24 - solid shaft. DETAILED DESCRIPTION

[0020] The technical solutions in the embodiments of the present application will be clearly and completely described below with reference to the drawings in the embodiments of the present application. Obviously, the described embodiments are only part of the embodiments of the present application, rather than all the embodiments of the present application. Based on the embodiments in the present application, all other embodiments obtained by those skilled in the art without creative work fall within the protection scope of the present application.

[0021] Referring to Figures 1 to 8 the drawings, the basic concept of the present application is embodied in a reset top rod which comprises at least a support rod 1 and a push-pull clamp head arranged at the front end of the support rod 1 for contacting a bone. The push-pull clamp head is composed of two parts: one part is a base plate 2 fixed at the front end of the support rod 1, and the other part is a movable plate 3 movably arranged at the front end of the push-pull clamp head and capable of moving along the axial direction of the support rod 1. When the movable plate 3 is closely attached to the base plate 2, the push-pull clamp head forms a smooth pushing surface, and at this time the top rod can only perform a pushing or top action on the bone. When the movable plate 3 is separated from the base plate 2, the push-pull clamp head can use the gap between the movable plate 3 and the base plate 2 to perform a clamping action, thereby realizing a clamping and pushing action on the bone. This design of integrating the two basic functions of "pushing" and "pulling" in one instrument significantly reduces the frequency of replacing the instrument during surgery, improves the continuity and efficiency of the surgery, and also disperses the pressure through the planar contact mode to reduce the damage to the periosteum.

[0022] In order to achieve the precise controlled displacement of the movable plate 3, the push rod is further designed with a driving member 4 arranged in a movable state on the support rod 1. This driving member 4 directly acts on the movable plate 3 and is responsible for the displacement process of the movable plate 3. This driving member 4 is like a bridge connecting the doctor's operation and the movement of the movable plate 3, and it can accurately transmit the force or instructions applied by the doctor through the handle to the movable plate 3, thereby stably controlling the opening and closing state of the push-pull chuck and improving the stability of the operation.

[0023] On this basis, in order to ensure the overall simplicity, compactness and operational convenience of the instrument, the support rod 1 is designed as a hollow structure. This driving member 4 is ingeniously arranged inside the support rod 1, and one end thereof directly acts on the movable plate 3 through force transmission. This built-in design avoids the problems of pollution, damage or interference with the surgical field that may be caused by the exposure of the driving member 4, while the integrated structure of the hollow rod ensures sufficient strength and rigidity, which can withstand the relatively large force required during fracture reduction. Of course, in some specific designs, the driving member 4 can also be considered to be arranged on the outside of the support rod 1 and linked with the movable plate 3, but the built-in design is generally more advantageous in terms of sterility and operational fluency. By directly transmitting force to the movable plate 3 through the internal driving member 4, efficient and direct motion control is ensured.

[0024] Further refinement, the end of the support rod 1 is fixedly connected with a hand grip 6, which is convenient for the doctor to hold and operate. In a specific embodiment, especially for the straight rod type push rod, the support rod 1 is a hollow structure, and a solid straight rod is arranged inside the support rod 1 and can move axially along the axis of the support rod 1. One end of the solid straight rod is connected with the movable plate 3, and the hand grip 6 is provided with a driving mechanism for driving the solid straight rod to move axially. In order to ensure the smooth sliding of the straight rod in the support rod 1, the assembly gap between the straight rod and the support rod 1 can be accurately controlled to be at least 0.1 mm, so as to ensure appropriate fitting tolerance, which not only ensures the sliding performance but also maintains the structural stability.

[0025] At the same time, in order to provide stronger friction when pushing or pulling or clamping the bone, anti-slip protrusions can be formed on both sides of the base plate 2 and the movable plate 3. These protrusions can be point-shaped, strip-shaped or grid-shaped, which can effectively increase the contact friction with the surface of the bone, prevent slipping during operation, and thus improve the efficiency and safety of the reduction operation.

[0026] For the application scenarios that require bending of the support rod 1, and in order to provide stable axial pushing and pulling force while maintaining flexibility, the driving member 4 can adopt a multi-strand twisted steel wire. A precise assembly gap is reserved between the multi-strand twisted steel wire and the inner wall of the support rod 1, so that it can slide axially. This steel wire is twisted by multiple high-strength thin steel wires, which effectively limits its radial expansion or contraction while maintaining sufficient flexibility, through close cooperation with the inner wall of the support rod 1. This means that even if the multi-strand twisted steel wire itself has a certain elasticity, it cannot significantly contract or expand radially when subjected to axial pushing and pulling force due to its effective constraint within the limited assembly gap, thereby being able to provide stable and efficient axial pushing and pulling force. This enables the multi-strand twisted steel wire to adaptively bend even if the support rod 1 is a pre-set curved structure, and smoothly slide axially inside the curved support rod 1 to drive the movable plate 3, greatly expanding the application range of the top rod, enabling it to be better applied to deep or complex fractures that require reduction from a non-linear angle.

[0027] In order to further enhance the strength and stability of the multi-strand twisted steel wire in the extended state, especially to meet the needs during pulling action, a support steel pipe 5 is sleeved on the outside of the front end of the multi-strand twisted steel wire. When the support steel pipe 5 tightly surrounds the front end of the multi-strand twisted steel wire, a assembly gap is also left between its outer wall and the inner wall of the support rod 1 for the axial sliding of the support steel pipe 5. The end of the support steel pipe 5 extending out of the support rod 1 is firmly fixed to the movable plate 3. It is worth noting that a solid shaft can be provided on the movable plate 3, which is fixedly inserted into the inner cavity of the front end support steel pipe 5, with an insertion depth of about half or more of the cavity length of the support steel pipe 5, and the other half or remaining depth is used for the insertion and fixation of the multi-strand twisted steel wire. The length range of this solid shaft covers the entire movement stroke of the movable plate 3, which means that in the extreme case of the extension of the movable plate 3, the solid shaft can still provide additional internal support for the front end support steel pipe 5, effectively preventing the risk of deformation or insufficient strength of the support steel pipe 5 when subjected to bending or pulling force. By sleeving this front end support steel pipe 5 and combining with the internal solid shaft, the bending stiffness and axial stability of the extended part can be significantly improved.

[0028] It is important to note that in the design of the curved support rod 1, the length of the front end support steel pipe 5 and its movement stroke are carefully designed to ensure that the body part (i.e. the non-extended part fixed to the movable plate 3) always remains within the straight section of the support rod 1 during axial movement, and does not enter or pass through the bending part of the support rod 1. This is crucial for preventing the front end support steel pipe 5 from being stuck at the bending part or deformed due to uneven force, thereby ensuring smooth and reliable operation of the instrument.

[0029] At the same time, the maximum operating stroke of the device, whether the support rod 1 is straight or curved, ensures its safety in actual use. Even if the movable plate 3 is at the maximum extension stroke (for example, the straight rod or the front end support steel pipe 5 is about to be detached from the front end of the support rod 1), the stroke is much larger than the maximum width of the common human bone or the maximum width of the bone at the target surgical position. This means that during normal reduction operation, the driving member 4 of the device will not accidentally completely detach from the support rod 1, thereby ensuring the safety of the surgical process. Only when disassembly and cleaning are needed, the driving member 4 needs to be operated in reverse to rotate to the bottom to achieve complete separation of the components.

[0030] In order to ensure the directionality and stability of the driving member 4 (whether it is a straight rod or a multi-strand twisted steel wire with a front end support steel pipe 5) inside the support rod 1, avoid its rotation or jam when sliding in the axial direction, at least one guide groove or guide bar extending in the same direction as the axis of the support rod 1 can be formed on the inner wall of the support rod 1. Correspondingly, the outer side of the straight rod or the front end support steel pipe 5 can also be formed with at least one guide groove or guide bar. The guide groove or guide bar cooperates with each other to form a guide mechanism, effectively limiting the rotation of the driving member 4, ensuring that it can only slide purely in the axial direction. This is crucial for maintaining the directionality of the push-pull clamp (especially the movable plate 3), thereby ensuring the accuracy and reliability of the "push" or "clamping" action. When the driving member 4 is a multi-strand twisted steel wire, the guide bar or the guide groove cannot be directly formed on the outer side of the driving member 4, therefore, the corresponding guide features are formed on the pipe wall of the support steel pipe 5 sleeved outside the multi-strand twisted steel wire, and the support steel pipe 5 cooperates with the guide features on the inner wall of the support rod 1 through the guide features on the outer side thereof, thereby realizing the overall anti-rotation function.

[0031] In order to achieve the precise, labor-saving and automatic locking function of the driving of the movable plate 3, at least one speed reducer motor 7 is integrated in the hand handle 6 of the top rod. The outer side of the hand handle 6 is also provided with forward and reverse rotation buttons, and doctors can intuitively control the rotation direction of the motor through these buttons, so as to realize the extension and retraction of the movable plate 3. A lead screw 8 is firmly connected to the output shaft of the speed reducer motor 7 and extends into the inner side of the support rod 1. Correspondingly, the corresponding end of the straight rod or the multi-strand twisted steel wire is provided with a tooth sleeve 9 for matching the lead screw 8. Through this mechanical linkage, the rotary motion of the lead screw 8 can be efficiently converted into the axial motion of the straight rod or the multi-strand twisted steel wire in the support rod 1 through the tooth sleeve 9. This electric screw transmission mechanism has the following advantages: it can achieve micron-level precise control of the position of the movable plate 3, which is crucial for fine adjustment during fracture reduction. At the same time, the screw transmission itself has a self-locking function, and once the motor stops rotating, the friction between the lead screw 8 and the tooth sleeve 9 can effectively lock the movable plate 3 in the current position, without the need for additional locking mechanisms, making the operation more convenient and reliable. In addition, the motor-assisted driving greatly reduces the operating burden of doctors, especially when a certain reduction state needs to be maintained for a long time.

[0032] Considering the structure and holding comfort of the hand handle 6, it can be specifically designed as follows: the hand handle 6 comprises a metal lining 12 and a silica gel lining 13 wrapped outside the metal lining 12. The rear end of the support rod 1 is firmly fixed and inserted into the front end of the metal lining 12. This design provides a solid internal support structure and a comfortable external holding feel. The metal lining 12 ensures the overall rigidity of the instrument, and the silica gel lining 13 improves the slip resistance and holding comfort, reducing the fatigue of doctors during long-time operation.

[0033] Further, the inner side of the metal lining 12 is shaped to have a containing cavity for containing the driving mechanism. This containing cavity is composed of a front cavity 14, a middle cavity 15 and a rear cavity 16 with increasing diameters, and this segmented design helps to optimize the use of internal space and the fixation of components. The lead screw 8 is located in the front cavity 14, and its front end is rotatably arranged in the tooth sleeve 9 of the straight rod or the multi-strand twisted steel wire. The micro coupling 10 and the speed reducer motor 7 are both located in the middle cavity 15. In order to accurately fix the position of the speed reducer motor 7, a limiting pipe column 17 is arranged in the middle cavity 15 to limit the lower limit position of the speed reducer motor 7. The upper end of the limiting pipe column 17 abuts against the speed reducer motor 7, and the lower end abuts against the step between the middle cavity 15 and the front cavity 14. The micro coupling 10 is located on the inner side of the limiting pipe column 17, ensuring its good connection with the motor output shaft and the lead screw 8. A tail cover 18 is rotatably arranged in the rear cavity 16 to abut against the tail of the speed reducer motor 7, thereby firmly packaging the entire driving mechanism in the hand handle 6.

[0034] In order to further prevent the rotation or wobble of the reduction motor 7 during operation, the end of the middle cavity 15 can be embedded with a limiting sleeve 19 for holding the outer contour plane of the reduction motor 7. The outer wall of the limiting sleeve 19 can be formed with ribs 20 or grooves 21, while the inner wall of the end of the middle cavity 15 is correspondingly formed with the corresponding grooves 21 or ribs 20. Through the mutual cooperation of the ribs 20 and the grooves 21, the rotation tendency of the reduction motor 7 is effectively limited, ensuring the stability of the motor during high-speed operation, thereby ensuring the reliability and accuracy of the driving mechanism.

[0035] In addition, inside the handle 6, a control circuit board 22 is usually arranged at the step between the rear cavity 16 and the middle cavity 15. The reduction motor 7 is electrically connected to the control circuit board 22, and the outer side of the handle 6 is provided with motor control buttons electrically connected to the control circuit board 22 for controlling the forward and reverse rotation of the reduction motor 7. The doctor can intuitively control the rotation direction of the motor through these buttons, thereby achieving the extension and retraction of the movable plate 3. The tail cover 18 is provided with a battery compartment 23 for installing a battery, which provides power for the entire electric drive system. The battery (such as a conventional No. 5 battery) is connected to the control circuit board 22 for power supply through a clever circuit design: the center of the control circuit board 22 can be provided with a positive contact for contacting the positive pole of the battery, and the inner bottom of the tail cover 18 is provided with a negative contact piece for contacting the negative pole of the battery. In order to complete the circuit connection, the outer side of the circular control circuit board 22 can be formed with contacts to contact the inner wall of the metal lining 12. Since the tail cover 18 itself is also commonly made of metal, after closing, a complete conduction path is formed; or contacts can also be provided at the position where the control circuit board 22 and the tail cover 18 are in contact, which has the same effect. The purpose is to build a complete power supply circuit, which is mature prior art and will not be described here.

[0036] When the driving member 4 is a multi-stranded twisted steel wire, in order to ensure its safe stop when fully retracted to the disassembly position, the rear end of the multi-stranded twisted steel wire is also fixedly sleeved with another supporting steel pipe 5, which, like the front end supporting steel pipe 5, needs to be limited by a limiting strip or a limiting groove to limit the rotation of the supporting steel pipe 5, ensuring that it can only slide purely axially. The mouthguard 9 is fixedly embedded in the end of the rear end supporting steel pipe 5. At this time, the multi-stranded twisted steel wire does not completely fill the rear end supporting steel pipe 5, and a distance is reserved between the multi-stranded twisted steel wire and the mouthguard 9 for the movement of the screw rod 8. When the screw rod 8 is reversely rotated to the limit position, its end will touch the bottom wall of the cylindrical cavity 11 of the straight rod or the rear end of the multi-stranded twisted steel wire (or the inner wall of the rear end supporting steel pipe 5 connected to the mouthguard 9), thereby triggering the overload protection circuit of the control circuit board 22 to automatically stop the operation of the reduction motor 7, ensuring the smoothness and safety of the disassembly process, and preventing the motor from idling or being damaged.

[0037] Based on the reset top rod, the application provides a fracture reduction process combining manual and electric operation, aiming at the accuracy and strength requirements in different stages of fracture reduction, and the specific operation process is as follows: When the conventional pushing or pulling operation is needed for the fracture block, that is, the top rod is used as a general reduction tool, the overall force is adopted.

[0038] When the pushing reduction is performed, the doctor will tightly attach the movable plate 3 and the fixed base plate 2 of the push-pull chuck to form a solid integrated pushing surface. Then, the doctor will abut the pushing surface (especially through the second force surface 3b) against the fracture block to apply an overall axial pushing force for reduction.

[0039] When the pulling reduction is performed, the doctor will abut the first force surface 2b of the push-pull chuck against the fracture block to apply an overall axial pulling force for reduction, and the motor adjustment is not needed in this process.

[0040] When the conventional operation is not enough to complete the reduction or more accurate operation is needed, the doctor will enable the electric adjustment function.

[0041] When the matching operation is performed, the doctor will place the fracture block between the movable plate 3 and the fixed base plate 2, and by operating the control button on the hand handle 6, the motor is driven to clamp the bone block by the first clamping surface 2a and the second clamping surface 3a. After stable clamping, the doctor can accurately match or pull the fracture block until it returns to the normal anatomical position.

[0042] When the auxiliary pushing operation is performed, if the strength or accuracy of the conventional manual pushing is not enough, the doctor can operate the driving part 4 to provide additional and fine pushing force on the basis of the overall pushing, so as to achieve more accurate reduction effect.

[0043] During the entire reduction process, the doctor can flexibly switch between different operation modes such as manual force, motor matching and motor auxiliary pushing according to the displacement of the fracture block and the reduction requirement. This method eliminates the need for frequent tool replacement in traditional surgery, ensuring the continuity of the surgical procedure Postoperative cleaning and installation method: after the surgery is completed, the top rod can be easily disassembled and cleaned. The doctor can operate the motor control button on the hand handle 6 to make the motor rotate in reverse direction, drive the screw rod 8 and the toothed sleeve 9 to separate, so as to separate the driving part 4 from the hand handle 6 and the motor part. Then, the separated driving part 4 is pulled out from the front end of the support rod 1, and all parts are thoroughly cleaned, disinfected and sterilized. After cleaning, the driving part 4 is reinserted into the support rod 1, and the motor is operated to rotate in the forward direction to make the screw rod 8 and the toothed sleeve 9 reengage and connect, so as to complete the reassembly of the instrument and prepare for the next use.

[0044] The above examples are only exemplary embodiments of the present application and are not intended to limit the present application, and the protection scope of the present application is defined by the claims. Those skilled in the art can make various modifications or equivalent replacements to the present application within the spirit and protection scope of the present application, and such modifications or equivalent replacements are also considered as falling within the protection scope of the embodiments of the present application.

Claims

1. An electrically operated fracture reduction rod, characterized in that, include: The support rod (1) has a hollow channel inside, and a drive component (4) is installed in the hollow channel. The push-pull chuck has a fixed base plate (2) and a movable plate (3). The fixed base plate (2) is fixedly disposed on the outer side wall of one end of the support rod (1). The fixed base plate (2) has a first clamping surface (2a) and a first force-applying surface (2b) perpendicular to the axial direction of the support rod (1). The first clamping surface (2a) and the first force-applying surface (2b) are respectively located on both sides of the fixed base plate (2) along the axial extension direction of the support rod (1). The movable plate (3) has a second clamping surface (3a) parallel to and opposite to the first clamping surface (2a) and a second force-applying surface (3b) opposite to the second clamping surface (3a). One end of the movable plate (3) is fixedly connected to one end of the drive member (4) extending out of the support rod (1). The movable plate (3) can move closer to or away from the fixed base plate (2) under the driving action of the drive member (4). A geared motor (7) is provided at the other end of the support rod (1). A lead screw (8) extending into the inside of the support rod (1) is fixedly connected to the output shaft of the geared motor (7). A toothed sleeve (9) for cooperating with the lead screw (8) is provided at the corresponding end of the drive member (4). The rotational movement of the lead screw (8) is converted into the axial movement of the drive member (4) in the support rod (1) through the toothed sleeve (9). A guide mechanism for preventing the drive member (4) from rotating in the support rod (1) is provided between the outer side of the drive member (4) and the inner side of the support rod (1).

2. The electrically operated fracture reduction rod according to claim 1, characterized in that, It also includes a hand handle (6), which is fixedly installed at the other end of the support rod (1), and the geared motor (7) is installed inside the hand handle (6).

3. The electrically operated fracture reduction rod according to claim 1, characterized in that, The driving component (4) is a solid straight rod.

4. The electrically operated fracture reduction rod according to claim 1, characterized in that, The driving component (4) is a multi-strand stranded steel wire, and an assembly gap is reserved between the multi-strand stranded steel wire and the inner wall of the support rod (1) for axial sliding of the multi-strand stranded steel wire.

5. The electrically operated fracture reduction rod according to claim 4, characterized in that, A support steel pipe (5) is fastened to the outer side of the front end of the multi-strand stranded steel wire. The support steel pipe (5) is tightly attached to the front end of the multi-strand stranded steel wire. The outer wall of the support steel pipe (5) and the inner wall of the support rod (1) are also left with an assembly gap for the axial sliding of the support steel pipe (5). One end of the support steel pipe (5) extending out of the support rod (1) is fixedly connected to the movable plate (3).

6. The electrically operated fracture reduction rod according to claim 5, characterized in that, The rear end of the multi-strand stranded steel wire is fixedly sleeved with another supporting steel pipe (5), and the toothed sleeve (9) is fixedly embedded in the end of the supporting steel pipe (5). A distance is reserved between the multi-strand stranded steel wire and the toothed sleeve (9) for the movement of the lead screw (8).

7. An electrically operated fracture reduction rod according to claim 3 or 6, characterized in that, The guiding mechanism consists of a guide groove and a guide bar. The guide bar and the guide groove are respectively formed on the inner wall of the support rod (1) and the outer wall of the driving member (4), and cooperate with each other.

8. The electrically operated fracture reduction rod according to claim 7, characterized in that, The handle (6) is provided with a control circuit board (22), the geared motor (7) is electrically connected to the control circuit board (22), the outside of the handle (6) is provided with a motor control button for controlling the forward and reverse rotation of the geared motor (7) and is electrically connected to the control circuit board (22), and the tail of the handle (6) is also provided with a battery compartment (23) for installing batteries.

9. The electrically operated fracture reduction rod according to claim 8, characterized in that, The control circuit board (22) integrates an overload protection circuit for stopping the operation of the geared motor (7).

10. A reduction method based on the electric fracture reduction rod according to claim 1, characterized in that, The reset methods include: push-reset method, pull-reset method, pairing-reset method, and boost-reset method; The push-reduction method is as follows: the movable plate (3) and the fixed base plate (2) are closely attached to form an integrated push-top surface, and the fracture fragment is repositioned by applying an overall axial push force through the second force application surface (3b); The pull-and-reduction method is as follows: the first force-applying surface (2b) is pressed against the fracture fragment, and an overall axial tensile force is applied to reduce the fracture. No motor adjustment is required during this process. The repositioning method is as follows: the fracture fragment is placed between the movable plate (3) and the fixed base plate (2), and the reduction motor (7) is driven by manipulating the control button on the hand handle (6) to clamp the fracture fragment with the first clamping surface (2a) and the second clamping surface (3a) facing each other. The method of boosting reset is as follows: by manipulating the drive component (4), the movable plate (3) provides additional and fine pushing force on the basis of the overall pushing, so as to achieve a more accurate reset effect; The fracture reduction method is any one or more of the following: the pushing reduction method, the pulling reduction method, the apical reduction method, and the assisted reduction method. The number of times the reduction method is executed is not limited according to the reduction needs.

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