Intramedullary nail control device and electromagnetic intramedullary limb reconstruction system

Abstract

The utility model discloses an intramedullary nail control device and an electromagnetic intramedullary limb reconstruction system.The intramedullary nail control device comprises a shell; a magnetic driving mechanism; a control mechanism; the first handles are symmetrically and rotationally arranged on the two sides of the shell through rotating shafts; the switching assembly is arranged in the shell and can fix the first handle to keep the first handle at the first angle or loosen the first handle to enable the first handle to rotate from the first angle to the second angle. On one hand, the first handle is arranged to be in a rotatable form, so that the first handle can serve as a holding part for holding the intramedullary nail control device, the first handle can be rotated to be switched to a clamping state so as to be clamped on a human body to fix the intramedullary nail control device, and then the stretching and retracting precision of the intramedullary nail is improved; and on the other hand, through the arrangement of the switching assembly, the first handle can be freely switched and kept between the holding state and the clamping state, and great convenience is brought to operators.

Description

Technical Field

[0001] This application relates to the field of medical devices, and relates to an intramedullary nail control device for adjusting an intramedullary nail and an electromagnetic intramedullary limb reconstruction system. Background Art

[0002] The Ilizarov technique is an internationally recognized clinical treatment method for limb orthopedics, but there are many complications related to external fixation. With the development and progress of the times, the second-generation limb orthopedic technique - externally controlled fully implantable intramedullary nails - has been formed based on the Ilizarov technique. Since the first externally controlled fully implantable intramedullary nail appeared in the 1980s, after more than 40 years of development, there are currently more than 3 types of externally controlled fully implantable intramedullary nails with lengthening mechanisms. Moreover, through a large number of experimental studies and clinical applications, a mature and stable clinical treatment mode has been formed, such as the End-Point-First (EPF) protocol proposed by Professor Peter H. Thaller of Germany. Compared with the Ilizarov technique, externally controlled fully implantable intramedullary nails have obvious advantages in terms of convenience, comfort, infection risk, soft tissue injury, postoperative pain, and limb lengthening controllability.

[0003] Developed by Ellipse Technologies Corporation in the United States The nail is currently the externally controlled fully implantable intramedullary nail with the largest global market share. This system uses magnetic drive and consists of an external remote controller containing 2 rotating magnets and a fully implantable intramedullary nail with an internal magnet. When lengthening, the patient only needs to place the external remote controller on the skin near the intramedullary nail, and control the telescopic movement of the intramedullary nail by changing the placement direction of the external remote controller, so as to achieve the purpose of lengthening or shortening the limb.

[0004] However, in the actual application process, when controlling the telescopic movement of the intramedullary nail, the operator needs to hold the external controller and keep it stable at a relatively fixed position, which is extremely inconvenient. Summary of the Utility Model

[0005] To solve or at least partially solve the above technical problems, a first aspect of this application provides an intramedullary nail control device for controlling the telescopic movement of an intramedullary nail, including:

[0006] A housing;

[0007] A magnetic drive mechanism for providing a magnetic field to drive the telescopic movement of the intramedullary nail;

[0008] A control mechanism for controlling the magnetic drive mechanism;

[0009] The first handle is symmetrically rotatably arranged on both sides of the housing through a rotating shaft. When the first handle is at a first angle, the first handle is used for gripping. When the first handle is at a second angle, the two first handles are in a clamping posture for clamping on a human body;

[0010] A switching component is arranged in the housing and can fix the first handle to keep the first handle at the first angle, or release the first handle so that the first handle can rotate from the first angle to the second angle.

[0011] Preferably, the first handle has a tendency to rotate from the first angle to the second angle.

[0012] Preferably, it further includes:

[0013] A torsion spring is sleeved on the rotating shaft and abuts against the first handle to make the first handle tend to rotate from the first angle to the second angle.

[0014] Preferably, the switching component includes:

[0015] An abutting member is movably arranged on the housing

[0016] When the abutting member is at a first position, the abutting member can abut against the first handle to fix the first handle;

[0017] When the abutting member is at a second position, the abutting member can release the first handle.

[0018] A further technical solution may also be that a sliding groove is arranged on the housing, and the abutting member is movably arranged in the sliding groove;

[0019] The switching component further includes:

[0020] A control member is movably arranged on the housing and extends into the sliding groove to be connected with the abutting member. When the control member moves, it can drive the abutting member to move synchronously.

[0021] A further technical solution may also be that the switching component further includes:

[0022] A return spring, one end of the return spring is relatively fixed, and the other end abuts against the abutting member to make the abutting member have a tendency to move from the second position to the first position.

[0023] Preferably, the abutting member at least has:

[0024] An abutting surface for abutting against the first handle;

[0025] The guiding surface is such that when the first handle rotates from the second angle to the first angle, the first handle can contact the guiding surface and, under the guiding action of the guiding surface, push the abutting member to move from the first position to the second position.

[0026] Preferably, the housing is provided with a connecting groove, and at least a part of the first handle extends into the connecting groove;

[0027] The connecting groove extends along the movement direction of the first handle rotating from the first angle to the second angle, providing an avoidance space for the rotation of the first handle.

[0028] A further technical solution may also be that the intramedullary nail control device further includes:

[0029] A second handle rotatably arranged on the housing;

[0030] A display screen arranged on the housing and electrically connected to the control mechanism;

[0031] Control buttons arranged on the housing and electrically connected to the control mechanism.

[0032] In a second aspect of the present application, an electromagnetic intramedullary limb reconstruction system is further provided, including:

[0033] An intramedullary nail;

[0034] The above-mentioned intramedullary nail control device for controlling the telescopic movement of the intramedullary nail.

[0035] On the one hand, by arranging the first handle in a rotatable form, the intramedullary nail control device can not only be used as a holding part for holding the intramedullary nail control device, but also can be switched to a clamping state by rotating the first handle for clamping on the human body to fix the intramedullary nail control device, thereby improving the accuracy of the telescopic movement of the intramedullary nail; on the other hand, through the setting of the switching component, the first handle can be freely switched between the holding state and the clamping state and maintained, which greatly facilitates the operator. BRIEF DESCRIPTION OF THE DRAWINGS

[0036] In order to more clearly illustrate the embodiments of the present application, the relevant drawings will be briefly introduced below. It can be understood that the drawings described below are only used to illustrate some embodiments of the present application, and those of ordinary skill in the art can also obtain many other technical features and connection relationships not mentioned in this text based on these drawings.

[0037] Figure 1 It is a schematic structural diagram of an intramedullary nail control device in an embodiment of the present application, wherein the first handle is in an extended state;

[0038] Figure 2Another structural schematic diagram of an intramedullary nail control device in an embodiment of the present application, wherein the first handle is in a clamping state;

[0039] Figure 3 Structural schematic diagram of an intramedullary nail control device in another embodiment of the present application, wherein the first handle is in an extended state;

[0040] Figure 4 Another structural schematic diagram of an intramedullary nail control device in another embodiment of the present application, wherein the first handle is in a clamping state;

[0041] Figure 5 Another structural schematic diagram of an intramedullary nail control device in another embodiment of the present application, wherein the first handle is in a clamping state;

[0042] Figure 6 Structural schematic diagram of an intramedullary nail control device in an embodiment of the present application, wherein the first handle is in an extended state;

[0043] Figure 7 Structural schematic diagram of a switching component in an embodiment of the present application;

[0044] Figure 8 Another structural schematic diagram of a switching component in an embodiment of the present application.

[0045] Explanation of reference numerals:

[0046] 1. Housing; 11. Sliding groove; 12. Connecting groove; 2. First handle;

[0047] 3. Switching component; 31. Abutting member; 311. Abutting surface; 312. Guide surface; 32. Control member; 33. Return spring;

[0048] 4. Second handle; 5. Display screen; 6. Control button. Detailed implementation manners

[0049] The technical solutions in the embodiments of the present application will be described in detail below with reference to the accompanying drawings in the embodiments of the present application.

[0050] Embodiment 1

[0051] In the first aspect of this embodiment, an intramedullary nail control device is provided for controlling the telescopic movement of an intramedullary nail. The intramedullary nail control device, as Figure 1 shown, includes:

[0052] Housing 1;

[0053] A magnetic drive mechanism for providing a magnetic field to drive the telescopic movement of the intramedullary nail;

[0054] A control mechanism for controlling the magnetic drive mechanism.

[0055] The second aspect of this embodiment also discloses an electromagnetic intramedullary limb reconstruction system, including

[0056] an intramedullary nail;

[0057] the above-mentioned intramedullary nail control device for controlling the telescopic movement of the intramedullary nail.

[0058] Specifically, the intramedullary nail is disposed in the patient's body, and both ends of the intramedullary nail can be respectively connected to two bones of the patient that are separated due to disconnection. The intramedullary nail control device is placed outside the patient at a position corresponding to the intramedullary nail. The intramedullary nail located in the patient's body can be telescoped under the magnetic field action of the magnetic drive mechanism, and a traction torque is generated on the bones respectively connected to both ends of the intramedullary nail, so that the bones can grow in a preset direction. The control mechanism can control the magnetic drive mechanism according to a preset program. Specifically, the control mechanism can flexibly adjust the magnetic field strength and direction of the magnetic drive mechanism by adjusting the voltage, frequency, phase conversion, etc. of the current connected to the magnetic drive mechanism, so as to provide a stable and strong magnetic field to the intramedullary nail and drive the telescopic movement of the intramedullary nail through this magnetic field. In some embodiments, the magnetic drive mechanism may include a drive motor and an electromagnet connected to the drive motor. Wherein, the drive motor is connected to the control mechanism and is controlled by the control mechanism to drive the rotation. In some preferred embodiments, a rotational speed sensor or an angular sensor is further disposed in the intramedullary nail control device for monitoring the rotation angle and the number of rotations of the drive motor or / and the electromagnet.

[0059] The inventor found that in the existing intramedullary nail control device, during use, the operator needs to hold the intramedullary nail control device and keep it stable at a relatively fixed position to ensure that the intramedullary nail can be better affected by the magnetic field and ensure the accuracy of its telescopic movement. However, in this way, the operator cannot well maintain the stability of the intramedullary nail control device during the holding process; when the intramedullary nail control device is displaced, the position of the intramedullary nail in the magnetic field generated by the intramedullary nail control device changes, resulting in an unstable magnetic field acting force on the intramedullary nail, which greatly affects the accuracy of the telescopic movement of the intramedullary nail.

[0060] Therefore, to solve the above problems, the intramedullary nail control device in this embodiment, as Figure 1 shown, further includes:

[0061] The first handle 2 is symmetrically rotatably disposed on both sides of the housing 1 through a rotating shaft. When the first handle 2 is at the first angle, the first handle 2 is used for holding. When the first handle 2 is at the second angle, the two first handles 2 are in a clamping posture for clamping on the human body.

[0062] Specifically, as Figure 1 and Figure 2As shown, two first handles 2 are symmetrically and rotatably arranged on both sides of the housing 1. The first handle 2 can rotate relative to the housing 1 to adjust the angle of the first handle 2. When the first handle 2 is at the first angle, as Figure 1 shown, the two first handles 2 extend towards both sides of the housing 1 and are generally maintained in the same plane; at this time, the first handle 2 can serve as the gripping part of the intramedullary nail control device for the operator to grip, so that the operator can better grip the intramedullary nail control device and adjust its position. When the first handle 2 is at the second angle, as Figure 2 shown, the two first handles 2 are in a clamping posture and can clamp on the human body to fix and stabilize the intramedullary nail control device on the human body; at this time, the intramedullary nail control device can be stably fixed on the human body surface through the two first handles 2 to maintain the relative position between the intramedullary nail and the intramedullary nail control device, so that the intramedullary nail can always be located at a certain fixed position in the magnetic field generated by the intramedullary nail control device, and then the magnetic field force received by the intramedullary nail is kept stable, which greatly improves the accuracy of the telescopic movement of the intramedullary nail.

[0063] It should be noted that the above-mentioned first angle and second angle can be understood as a certain angle range. Or, in some embodiments, the first angle can be a certain fixed angle, while the second angle is a certain angle range. The purpose of such a setting is that when the first handle 2 is in the clamping posture, it can have a certain clamping angle adjustment range to adapt to patients of different body types; when the first handle 2 is within the clamping angle range, it can clamp on the human body. For example, as Figure 1 shown, the first angle is 180 degrees, that is, the angle between the first handle 2 and the housing 1 is 180°, and the two first handles 2 are horizontally extended towards both sides of the housing 1; while the angle range of the second angle is 45° - 135°, as Figure 2 shown.

[0064] In addition, in order to ensure the stability of clamping and prevent the first handle 2 from rotating randomly during the clamping process, the rotational connection between the first handle 2 and the housing 1 can be set to have a certain damping, so that the first handle 2 can limit the rotation of the first handle 2 through the frictional force between it and the housing 1.

[0065] In addition, in some other more preferred embodiments, as Figure 3 、 Figure 4 and Figure 5 shown, the surface of the first handle 2 facing the human body is an arc surface to adapt to the curvature of the human body to ensure the comfort of the patient in the clamping state. In addition, the arc surface structure can better clamp the human body and avoid the phenomenon of detachment during the clamping process of the intramedullary nail control device.

[0066] In some preferred embodiments, such as Figure 7 and Figure 8 shown, the intramedullary nail control device further comprises:

[0067] A switching component 3, disposed within the housing 1, capable of fixing the first handle 2 to hold the first handle 2 at a first angle, or releasing the first handle 2 such that the first handle 2 can rotate from the first angle to a second angle.

[0068] Through the arrangement of the switching component 3, it is possible to achieve arbitrary switching between the two states of holding and clamping of the first handle 2 by releasing or fixing the first handle 2. For example, when the first handle 2 is at the first angle, the switching component 3 can fix the first handle 2 to hold the first handle 2 in the holding state; and when the switching component 3 releases the first handle 2, the first handle 2 can rotate from the first angle to the second angle to switch to the clamping state.

[0069] On the one hand, by configuring the first handle 2 to be rotatable, the intramedullary nail control device can be used both as a gripping part to hold the intramedullary nail control device, and can also be switched to the clamping state by rotating the first handle 2 to clamp onto the human body to fix the intramedullary nail control device, thereby improving the accuracy of the telescopic movement of the intramedullary nail; on the other hand, through the arrangement of the switching component 3, the first handle 2 can be freely switched between the holding state and the clamping state and maintained, which greatly facilitates the operator.

[0070] In some preferred embodiments, the first handle 2 has a tendency to rotate from the first angle to the second angle.

[0071] With such an arrangement, on the one hand, when the switching component 3 releases the first handle 2, the first handle 2 can automatically rotate from the first angle to the second angle, eliminating the need for the operator to manually push the first handle 2 to rotate, thereby improving convenience; on the other hand, due to the tendency of the first handle 2 to rotate from the first angle to the second angle, under the action of this tendency, the two first handles 2 can always maintain a tendency to clamp towards the human body and can provide a certain clamping force for the first handle 2 to ensure the clamping effect. It should be noted that in this embodiment, when the first handle 2 needs to be switched from the clamping state to the holding state, an external force needs to be applied to overcome the rotation tendency of the first handle 2.

[0072] Specifically, the intramedullary nail control device may include a torsion spring (not shown in the figure), which is sleeved on the rotating shaft and abuts against the first handle 2 to cause the first handle 2 to tend to rotate from the first angle to the second angle. Specifically, in this embodiment, when the first handle 2 needs to be switched from the clamping state to the holding state, the operator needs to push the first handle 2 to overcome the elastic force of the torsion spring, so that the first handle 2 can rotate from the second angle to the first angle under the push of the operator.

[0073] In some other embodiments, as Figures 1-6 shown, the intramedullary nail control device further includes:

[0074] A second handle 4, rotatably arranged on the housing 1.

[0075] A display screen 5, arranged on the housing 1 and electrically connected to the control mechanism, for displaying the control state and control parameters of the intramedullary nail control device;

[0076] Control buttons 6, arranged on the housing 1 and electrically connected to the control mechanism.

[0077] Specifically, in this embodiment, as Figures 1-6 shown, the second handle 4 is rotatably arranged on one side of the housing 1, and its rotating shaft is perpendicular to the rotating shaft of the first handle 2. This enables the second handle 4 to be folded on the housing 1 in the normal state (as Figure 3 shown), and when needed, the second handle 4 can be rotated to expand it outward from the housing 1 (as Figure 6 shown) for the operator to hold, and the intramedullary nail control device can be driven to move to adjust its position at a distance through the second handle 4.

[0078] Embodiment 2

[0079] The second embodiment of this patent provides an intramedullary nail control device and an electromagnetic intramedullary limb reconstruction system. The second embodiment is a further improvement based on the first embodiment, and the improvement lies in that: as Figure 7 shown, the switching component 3 may include:

[0080] An abutting member 31, movably arranged on the housing 1

[0081] When the abutting member 31 is in the first position, the abutting member 31 can abut against the first handle 2 to fix the first handle 2;

[0082] When the abutting member 31 is in the second position, the abutting member 31 can release the first handle 2.

[0083] Specifically, as Figure 7 and Figure 8As shown, the abutting member 31 is movably arranged on the housing 1 and can move freely between a first position and a second position. When the abutting member 31 is located at the first position, the abutting member 31 is at least partially located on the rotation path of the first handle 2, so that the abutting member 31 can abut against the first handle 2 to fix the first handle 2 and limit the rotation of the first handle 2, so that the first handle 2 cannot rotate from the first angle to the second angle, thereby realizing holding the first handle 2 in the holding state. When the abutting member 31 moves from the first position to the second position, the abutting member 31 leaves the movement path of the first handle 2, so that the abutting member 31 cannot abut against the first handle 2 to release the first handle 2, so that the first handle 2 can rotate from the first angle to the second angle to switch to the clamping state.

[0084] Through the arrangement of the abutting member 31, the position of the abutting member 31 is controlled by the movement of the abutting member 31, thereby realizing the fixing and releasing of the first handle 2, so that the first handle 2 can freely switch between the holding state and the clamping state, and the operation is convenient.

[0085] It should be noted that when the first handle 2 needs to be switched from the clamping state to the holding state, that is, when rotating from the second angle to the first angle, the abutting member 31 needs to be moved to the second position first to ensure the smooth movement path of the first handle 2.

[0086] In order to facilitate the operator to push the abutting member 31 to move to control the position of the abutting member 31, in some embodiments, as Figure 8 shown, a sliding groove 11 can be arranged on the housing 1, and the abutting member 31 is movably arranged in the sliding groove 11;

[0087] The switching assembly 3 further includes:

[0088] A control member 32, which is movably arranged on the housing 1 and extends into the sliding groove 11 to be connected with the abutting member 31. When the control member 32 moves, it can drive the abutting member 31 to move synchronously.

[0089] Specifically, as Figure 8 shown, the sliding groove 11 is arranged on the housing 1, and its extending direction is parallel to the axis of the rotation shaft of the first handle 2; the abutting member 31 is movably arranged in the sliding groove 11 and can move along the sliding groove 11. In this way, the abutting member 31 can move in a direction perpendicular to the plane formed by the rotation path of the first handle 2, enter the rotation path of the first handle 2 to fix the first handle 2, or leave the rotation path of the first handle 2 to release the first handle 2. Such an arrangement makes the space occupied by the switching assembly 3 on the housing 1 for realizing its function smaller, and can effectively reduce the volume of the intramedullary nail control device.

[0090] In addition, the sliding groove 11 can form a movement path for the abutting member 31 to ensure the stability of the movement of the abutting member 31. Moreover, in this embodiment, as shown in the figure, when the abutting member 31 is in the first position, most of its whole body is located inside the sliding groove 11, and only a small part enters the movement path of the first handle 2 to be used for abutting against the first handle 2. This enables the sliding groove 11 to provide sufficient support for the abutting member 31 when the abutting member 31 abuts against the first handle 2, so as to ensure the stability of the abutting member 31 itself.

[0091] It is worth mentioning that, as Figure 8 shown, the control member 32 can be arranged outside the housing 1 and connected to the abutting member 31 located in the sliding groove 11. In this way, the operator can push the control member 32 to move from outside the housing 1, thereby driving the abutting member 31 to move, so that the position of the abutting member 31 can be switched between the first position and the second position, which greatly facilitates the operator.

[0092] In addition, a limiting portion 12 can be arranged in the sliding groove 11, and a convex platform corresponding to the limiting portion 12 can be arranged on the abutting member 31. The convex platform can abut against the limiting portion 12 to limit the maximum movement distance of the abutting member 31 in the sliding groove 11 and prevent the abutting member 31 from detaching from the sliding groove 11.

[0093] In some other preferred embodiments, as Figure 7 and Figure 8 shown, the switching assembly 3 can further include:

[0094] a return spring 33, one end of the return spring 33 is relatively fixed, and the other end abuts against the abutting member 31 so that the abutting member 31 has a tendency to move from the second position to the first position.

[0095] Specifically, as Figure 7 shown, the return spring 33 can be arranged inside the sliding groove 11. One end of the return spring 33 abuts against the inner wall of the sliding groove 11, and the other end abuts against the abutting member 31. Through the arrangement of the return spring 33, the abutting member 31 can always be kept in the first position under the elastic force of the return spring 33; the abutting member 31 can, under the action of an external force, that is, under the operation of the operator, overcome the elastic force of the return spring 33 and push the abutting member 31 from the first position to the second position to release the first handle 2; when the external force is removed, the abutting member 31 can be reset from the second position to the first position under the restoring force of the elastic force of the return spring 33.

[0096] Embodiment III

[0097] The third embodiment of this patent provides an intramedullary nail control device and an electromagnetic intramedullary limb reconstruction system. The third embodiment is a further improvement based on the second embodiment. As Figure 7and Figure 8 As shown, the improvements are:

[0098] The abutment member 31 at least has:

[0099] The abutting surface 311 is used to abut against the first handle 2;

[0100] The guide surface 312 , when the first handle 2 rotates from the second angle to the first angle, the first handle 2 can contact the guide surface 312 , and under the guidance of the guide surface 312 , push the abutment member 31 to move from the first position to the second position.

[0101] Specifically, as shown in the figure, when the first handle 2 is located at the first angle, the abutment surface 311 on the abutment member 31 located at the first position abuts against the first handle 2, overcomes the rotation tendency of the first handle 2, and fixes the first handle 2 at the first angle. When the first handle 2 rotates from the second angle to the first angle, the first handle 2 contacts the guide surface 312 of the abutment member 31, and in the process of its gradual rotation, under the guidance of the guide surface 312, the first handle 2 pushes the abutment member 31 to gradually move from the first position to the second position; and after the first handle 2 gradually moves within the range of action of the guide surface 312, the abutment member 31 is under the elastic force of the reset spring 33. Through such a setting, when the first handle 2 moves from the second angle to the first angle, the rotation of the first handle 2 can drive the abutment member 31 to move under the guidance of the guide surface 312 to release its blocking of the first handle 2. When the first handle 2 is rotated from the second angle to the first angle, the abutment member 31 is controlled at the same time, eliminating the need for the operator to perform an additional step of controlling the abutment member 31 , thus greatly facilitating the operator.

[0102] In this embodiment, the abutting surface 311 and the guiding surface 312 are sequentially arranged in the direction in which the first handle 2 rotates from the first angle to the second angle. When the first handle 2 rotates from the first angle to the second angle, the abutting surface 311 of the abutting member 31 faces the first handle 2, so that the abutting surface 311 can abut the first handle 2 at the first angle; when the first handle 2 rotates from the second angle to the first angle, the guiding surface 312 of the abutting member 31 faces the first handle 2, so that the first handle 2 can contact the guiding surface 312, and under the guidance of the guiding surface 312, the abutting member 31 is pushed to move from the first position to the second position.

[0103] Embodiment 4

[0104] The third embodiment of the present invention provides an intramedullary nail control device and an electromagnetic intramedullary limb reconstruction system. The third embodiment is a further improvement based on the first, second or third embodiment, such as Figure 2 As shown, the improvements are:

[0105] The housing 1 is provided with a connection groove 12, and at least a part of the first handle 2 extends into the connection groove 12.

[0106] In this embodiment, a part of the first handle 2 can extend into the connection groove 12 and is rotatably connected to the housing 1. This enables the connection groove 12 to provide a certain guiding effect for the first handle 2 when the first handle 2 rotates, and can limit the displacement of the first handle 2 in the axial direction of the rotating shaft, so as to ensure the stability of the first handle 2 itself.

[0107] In addition, since a part of the first handle 2 extends into the connection groove 12, the connection groove 12 can limit the rotation angle range of the first handle 2 to a certain extent. Specifically, when the first handle 2 is at the first angle, one side of the first handle 2 abuts against one side wall of the connection groove 12, and the other side abuts against the abutting member 31. By the connection groove 12 and the abutting member 31 respectively abutting against the opposite sides of the first handle 2, the position of the first handle 2 is fixed in this way. When the first handle 2 is at the second angle, the other side of the connection groove 12 can abut against the first handle 2 to limit the rotation angle of the first handle 2.

[0108] In some preferred embodiments, as Figure 2 shown, the connection groove 12 extends along the movement direction of the first handle 2 rotating from the first angle to the second angle. Such a setting can, on the one hand, provide an avoidance space for the rotation of the first handle 2, and on the other hand, can also increase the rotation angle range of the first handle 2, so that the clamping angle range formed by the two first handles 2 is increased to adapt to patients of different body types.

[0109] For those skilled in the art, it is obvious that this application is not limited to the details of the above exemplary embodiments, and without departing from the spirit or basic characteristics of this application, this application can be implemented in other specific forms. Therefore, from any point of view, the embodiments should be regarded as exemplary and non-restrictive. The scope of this application is defined by the appended claims rather than the above description. Therefore, all changes falling within the meaning and scope of the equivalent elements of the claims are intended to be included in this application. Any reference signs in the claims should not be regarded as limiting the claims involved.

Claims

1. An intramedullary nail control device for controlling the telescopic movement of an intramedullary nail, characterized in that, Comprising: A housing; A magnetic drive mechanism for providing a magnetic field to drive the telescopic movement of the intramedullary nail; A control mechanism for controlling the magnetic drive mechanism; A first handle rotatably disposed symmetrically on both sides of the housing through a rotating shaft. When the first handle is at a first angle, the first handle is for gripping; when the first handle is at a second angle, the two first handles are in a clamping posture for clamping on the human body; A switching assembly disposed within the housing, capable of fixing the first handle to hold the first handle at the first angle, or releasing the first handle so that the first handle can rotate from the first angle to the second angle.

2. The intramedullary nail control device according to claim 1, wherein: The first handle has a tendency to rotate from the first angle to the second angle.

3. The intramedullary nail control device according to claim 2, wherein Further comprising: A torsion spring sleeved on the rotating shaft and abutted against the first handle to cause the first handle to have a tendency to rotate from the first angle to the second angle.

4. The intramedullary nail control device according to claim 1, characterized in that, The switching assembly comprises: An abutting member movably disposed on the housing When the abutting member is at a first position, the abutting member can abut against the first handle to fix the first handle; When the abutting member is at a second position, the abutting member can release the first handle.

5. The intramedullary nail control device according to claim 4, characterized in that, A sliding groove is provided on the housing, and the abutting member is movably disposed within the sliding groove; The switching assembly further comprises: A control member movably disposed on the housing and extending into the sliding groove to be connected to the abutting member. When the control member moves, it can drive the abutting member to move synchronously.

6. The intramedullary nail control device according to claim 4, wherein The switching assembly further comprises: A return spring, one end of which is relatively fixed and the other end abuts against the abutting member to cause the abutting member to have a tendency to move from the second position to the first position.

7. The intramedullary nail control device according to claim 6, characterized in that, The abutting member at least has: An abutting surface for abutting against the first handle; A guiding surface. When the first handle rotates from the second angle to the first angle, the first handle can contact the guiding surface and, under the guiding action of the guiding surface, push the abutting member to move from the first position to the second position.

8. The intramedullary nail control device according to any one of claims 1-7, characterized in that, The housing is provided with a connecting groove, and at least a part of the first handle extends into the connecting groove; The connecting groove extends along the movement direction of the first handle rotating from the first angle to the second angle, providing an avoidance space for the rotation of the first handle.

9. The intramedullary nail control device according to any one of claims 1-7, characterized in that, Further comprising: A second handle rotatably disposed on the housing; A display screen disposed on the housing and electrically connected to the control mechanism; Control buttons disposed on the housing and electrically connected to the control mechanism.

10. An electromagnetic intramedullary limb reconstruction system, characterized in that, Comprising: An intramedullary nail; The intramedullary nail control device according to any one of claims 1-9, for controlling the telescopic movement of the intramedullary nail.

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