Implantable bone lengthening device

Abstract

The present application relates to an implantable bone lengthening device, which belongs to the field of medical device technology. The implantable bone lengthening device includes a shell, a telescopic component, a driving component, a communication component, a control component and a power supply component. A first fixing portion is provided on the shell; the telescopic component is inserted into the shell and slidably cooperates with the shell, and a second fixing portion is provided at the protruding end of the telescopic component; the driving component is provided in the shell, and is used to drive the telescopic component to extend or retract the shell; the communication component is provided in the shell, and is used to realize data exchange and manipulation with an external control device in a non-contact manner; the control component is provided in the shell, and the driving component and the communication component are both electrically connected to the control component, and the control component is used to respond to the communication data of the communication component to control the operation of the driving component; the power supply component is used to supply power to the driving component, the communication component and the control component. The implantable bone lengthening device can be completely buried in the soft tissue as a whole, which improves the patient's compliance and comfort.

Description

Technical Field

[0001] The present application relates to the technical field of medical devices, and in particular to an implantable bone lengthening device. Background Art

[0002] With the advancement of science and technology and the improvement of living standards, people pay more and more attention to their own health and beauty, which has prompted the continuous development and progress of medical technology and equipment. At present, in craniomaxillofacial surgery, the traditional bone extender used to treat the short mandible in the disease of hemifacial shortness is a manual distraction osteogenesis device. The placement of this type of device requires an additional extraoral auxiliary incision and a rotatable extension rod. The doctor or patient manually rotates the extension rod to control the telescopic rod so that the extension speed is equivalent to the rate of new bone formation. This manual mechanical adjustment operation is relatively complicated, the patient compliance is poor, and the accuracy is poor. The traditional extender implantation requires an extraoral auxiliary incision to retain the extension rod, which is difficult to sanitary care and prone to complications such as infection and necrosis of bone and soft tissue, affecting the overall treatment effect. In addition, after a treatment cycle of 6-7 months, the auxiliary incision usually leaves an auxiliary incision scar on the face, and the extension rod will be exposed on the affected side of the face during the entire treatment process, which puts a great psychological burden on the patient. Therefore, a new type of bone lengthening device is needed to overcome the defects of existing instruments, solve practical clinical problems, and improve the comfort of patients during treatment. Summary of the invention

[0003] The purpose of the present application is to provide an implantable bone lengthening device that can be completely buried in soft tissue, making care more convenient and improving patient compliance and comfort.

[0004] This application is achieved through the following technical solutions:

[0005] The present application provides an implantable bone lengthening device, comprising:

[0006] A housing, wherein a first fixing portion is provided on the housing;

[0007] A telescopic component is inserted into the housing and slidably cooperates with the housing, and a second fixing portion is provided at the extended end of the telescopic component;

[0008] A driving assembly, disposed in the housing, for driving the telescopic assembly to extend or retract into the housing;

[0009] A communication component is disposed in the housing and is used to realize data exchange and control with an external control device in a non-contact manner;

[0010] A control component is disposed in the housing, the drive component and the communication component are both electrically connected to the control component, and the control component is used to respond to the communication data of the communication component to control the operation of the drive component;

[0011] The power supply component is arranged in the shell and is used to supply power to the drive component, the communication component and the control component.

[0012] The implantable bone lengthening device can be completely buried in the patient's soft tissue; it has a power supply component and can work for a long time; it can realize data exchange with external control equipment through a communication component, remotely and accurately control the extension and contraction amount of the telescopic component, and monitor the bone lengthening situation in real time; at the same time, the non-retaining extraoral auxiliary incision facilitates patient care, improves patient compliance and comfort, and enhances the overall treatment effect.

[0013] Optionally, a first chamber and a second chamber are formed inside the shell, the telescopic component and the driving component are arranged in the first chamber, and the communication component, the control component and the power supply component are arranged in the second chamber.

[0014] In the above embodiment, the telescopic component and the driving component are arranged in the first chamber to facilitate the telescopic drive of the telescopic component; the communication component, the control component and the power supply component are arranged in the second chamber to facilitate the concentration of electrical components, the structure is compact, and the installation space is saved.

[0015] Optionally, the telescopic assembly includes a telescopic rod, which is arranged in the first chamber and slidably cooperates with the inner wall of the shell, and the second fixing part is detachably connected to the telescopic rod. When the telescopic rod is in an initial state, the second fixing part is located outside the shell.

[0016] In the above embodiment, the telescopic rod slides relative to the housing to achieve stretching of the two broken bones.

[0017] Optionally, the second fixing portion includes a connected connecting seat and a first fixing seat, the connecting seat is connected to the end of the telescopic rod, the first fixing seat is an L-shaped structure, the first fixing seat is arranged outside the connecting seat, the first fixing seat includes a first seat body and a second seat body, the first seat body extends along the length direction of the telescopic rod, the second seat body is arranged perpendicular to the length direction of the telescopic rod, and the first seat body and the second seat body are respectively provided with multiple first fixing holes.

[0018] In the above embodiment, the connecting seat can realize the connection between the first fixing seat and the telescopic rod, which is convenient for positioning the first fixing seat and the broken bone; the setting form of the first fixing seat saves the overall space occupancy while ensuring a larger contact surface with the broken bone.

[0019] Optionally, the driving assembly includes a motor and a screw, the screw is connected to the output end of the motor, the telescopic rod is an internal hollow structure, a threaded hole corresponding to the screw is formed inside the telescopic rod, the telescopic rod cooperates with the screw thread, and the motor is used to drive the screw to rotate to drive the telescopic rod to extend or retract relative to the shell.

[0020] In the above embodiment, the telescopic accuracy of the telescopic rod is ensured by the motor lead screw drive, which facilitates accurate control of the telescopic amount of the telescopic rod.

[0021] Optionally, a sliding block is provided on the side wall of the telescopic rod, and a sliding groove corresponding to the sliding block is provided on the side wall of the first chamber, and the sliding block is configured to be movably disposed in the sliding groove.

[0022] In the above embodiment, the cooperation between the slider and the slide slot ensures that the telescopic rod can move flexibly and stably relative to the housing.

[0023] Optionally, at least one first fixing part is provided, each first fixing part is connected to the side wall of the shell, the first fixing part includes a connecting ear and a second fixing seat, there is a gap between the second fixing seat and the shell, the second fixing seat is provided with a plurality of second fixing holes, and the plurality of second fixing holes are spaced apart along the length direction of the shell.

[0024] In the above embodiment, the configuration of the first fixing portion facilitates the doctor to adjust the position of the second fixing seat according to needs so as to better fix it to the broken bone.

[0025] Optionally, two first fixing portions are provided, and the two first fixing portions are symmetrically distributed on two sides of the shell.

[0026] In the above embodiment, the provision of the two first fixing portions ensures the fixing stability of the housing.

[0027] Optionally, the shell includes a first positioning surface, a second positioning surface and a transition surface, the first positioning surface and the second positioning surface are arranged opposite to each other, the first positioning surface and the second positioning surface are planes, the transition surface connects the first positioning surface and the second positioning surface, and the transition surface is a smooth curved surface.

[0028] In the above embodiment, the planar setting of the first positioning surface and the second positioning surface ensures that the shell has a larger contact surface with the broken bone and soft tissue, which is convenient for fitting; the smooth setting of the transition surface can avoid cutting or scratching the soft tissue and play a protective role.

[0029] Optionally, the implantable bone lengthening device further comprises a sensor unit, and the sensor unit comprises a temperature sensor, a pressure sensor, and a pH sensor.

[0030] In the above embodiment, the provision of the sensor unit can assist doctors in determining the growth condition between broken bones.

[0031] Additional aspects and advantages of the present application will be given in part in the description below, and in part will become apparent from the description below, or will be learned through the practice of the present application. BRIEF DESCRIPTION OF THE DRAWINGS

[0032] In order to more clearly illustrate the technical solutions of the embodiments of the present application, the drawings required for use in the embodiments will be briefly introduced below. It should be understood that the following drawings only show certain embodiments of the present application and therefore should not be regarded as limiting the scope. For ordinary technicians in this field, other related drawings can be obtained based on these drawings without paying creative work.

[0033] Figure 1 An exploded view of an implantable bone lengthening device provided in one embodiment of the present application;

[0034] Figure 2 A control relationship diagram of various components of an implantable bone lengthening device provided in one embodiment of the present application;

[0035] Figure 3 A cross-sectional view of a housing of an implantable bone lengthening device provided in one embodiment of the present application;

[0036] Figure 4 A schematic diagram of the structure of an implantable bone lengthening device provided in one embodiment of the present application;

[0037] Figure 5 A schematic structural diagram of a housing of an implantable bone lengthening device provided in one embodiment of the present application;

[0038] Figure 6 This is a workflow diagram of an implantable bone lengthening device provided in one embodiment of the present application.

[0039] Icons: 100-implantable bone lengthening device; 10-housing; 11-first chamber; 111-slide; 12-second chamber; 13-first end; 14-second end; 15-first positioning surface; 16-second positioning surface; 17-transition surface; 18-first end cover; 19-second end cover; 191-avoidance; 20-telescopic assembly; 21-telescopic rod; 211-second mounting hole; 212-slider; 30-driving assembly; 31-motor; 32-screw; 40-communication component; 50-control component; 60-power supply component; 71-first fixing part; 711-connecting ear; 712-second fixing seat; 7121-second fixing hole; 72-second fixing part; 721-connecting seat; 7211-first mounting hole; 722-first fixing seat; 7221-first seat body; 7222-second seat body; 7223-first fixing hole; 73-gap; 74-pin; 80-sensor unit; 90-storage unit. DETAILED DESCRIPTION

[0040] In order to make the purpose, technical solution and advantages of the embodiments of the present application clearer, the technical solution in the embodiments of the present application will be clearly and completely described below in conjunction with the drawings in the embodiments of the present application. Obviously, the described embodiments are part of the embodiments of the present application, rather than all the embodiments. The components of the embodiments of the present application described and shown in the drawings here can be arranged and designed in various different configurations.

[0041] Therefore, the following detailed description of the embodiments of the present application provided in the accompanying drawings is not intended to limit the scope of the present application for which protection is sought, but merely represents selected embodiments of the present application. Based on the embodiments in the present application, all other embodiments obtained by ordinary technicians in the field without creative work are within the scope of protection of the present application.

[0042] It should be noted that similar reference numerals and letters denote similar items in the following drawings, and therefore, once an item is defined in one drawing, further definition and explanation thereof is not required in subsequent drawings.

[0043] In the description of this application, it should be noted that the terms "inside", "outside", etc. indicate the orientation or positional relationship based on the orientation or positional relationship shown in the drawings, or the orientation or positional relationship in which the product of the application is usually placed when in use, which is only for the convenience of describing this application and simplifying the description, and does not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation on this application. In addition, the terms "first", "second", etc. are only used to distinguish the description, and cannot be understood as indicating or implying relative importance.

[0044] In the description of this application, it should also be noted that, unless otherwise clearly specified and limited, the terms "disposed" and "connected" should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a direct connection, or an indirect connection through an intermediate medium, or it can be the internal communication of two elements. For ordinary technicians in this field, the specific meanings of the above terms in this application can be understood according to specific circumstances.

[0045] In craniomaxillofacial surgery, for the treatment of short mandible, traditional bone lengthening instruments leave an extension rod in an auxiliary incision outside the patient's mouth, which is difficult to maintain and prone to complications such as infection and necrosis of bone and soft tissue, affecting the overall treatment effect. Based on the above problems or other potential problems of existing bone lengthening instruments, the inventor provides an implantable bone lengthening device that can be buried in soft tissue.

[0046] The following describes an implantable bone lengthening device according to an embodiment of one aspect of the present application with reference to the drawings.

[0047] like Figure 1-Figure 6 As shown, the implantable bone lengthening device 100 according to the embodiment of the present application includes: a housing 10, a telescopic assembly 20, a driving assembly 30, a communication assembly 40, a control assembly 50 and a power supply assembly 60.

[0048] Specifically, the housing 10 is provided with a first fixing portion 71 for fixing to one of the two broken bones. The housing 10 is a hollow structure, the telescopic assembly 20 is inserted into the housing 10, and is slidably matched with the housing 10, and the telescopic assembly 20 can be extended or retracted relative to the housing 10. The extended end of the telescopic assembly 20 is provided with a second fixing portion 72 for fixing to the other of the two broken bones, so as to cooperate with the first fixing portion 71, and the two broken bones are stretched by the extension of the telescopic assembly 20. The drive assembly 30 is arranged in the housing 10, and the drive assembly 30 can drive the telescopic assembly 20 to extend or retract the housing 10. The communication assembly 40 is arranged in the housing 10, and the communication assembly 40 can realize data exchange and control with an external control device in a non-contact manner. The control assembly 50 is arranged in the housing 10, and the drive assembly 30 and the communication assembly 40 are both electrically connected to the control assembly 50, and the control assembly 50 is used to respond to the communication data of the communication assembly 40 to control the operation of the drive assembly 30. The power supply assembly 60 is disposed in the housing 10 , and is used to supply power to the driving assembly 30 , the communication assembly 40 , the control assembly 50 and other electrical components.

[0049] The implantable bone lengthening device 100 can be completely buried in the patient's soft tissue; it has a power supply component 60 and can work for a long time; it realizes data exchange with an external control device through a communication component 40, remotely and accurately controls the telescopic amount of the telescopic component 20, and monitors the bone lengthening situation in real time; at the same time, the non-retaining extraoral auxiliary incision facilitates patient care, improves the patient's compliance and comfort, and enhances the overall treatment effect.

[0050] In one embodiment of the present application, Figure 3 As shown, a first chamber 11 and a second chamber 12 are formed inside the housing 10. The telescopic assembly 20 and the driving assembly 30 are arranged in the first chamber 11, and the communication assembly 40, the control assembly 50 and the power supply assembly 60 are arranged in the second chamber 12. The telescopic assembly 20 and the driving assembly 30 are arranged in the first chamber 11 to facilitate the telescopic drive of the telescopic assembly 20; the communication assembly 40, the control assembly 50 and the power supply assembly 60 are arranged in the second chamber 12 to facilitate the concentration of electrical components, compact structure, and save installation space.

[0051] like Figure 1 and Figure 3As shown, the housing 10 is a rectangular parallelepiped structure, and the housing 10 includes a first end 13 and a second end 14 opposite to each other. The first chamber 11 extends along the length direction of the housing 10 and passes through both ends of the housing 10. The driving component 30 is arranged at a position close to the first end 13 of the first chamber 11, one end of the telescopic component 20 is connected to the driving component 30, and the other end of the telescopic component 20 is configured to be able to extend out of the first chamber 11 from the second end 14. The second chamber 12 is opened at the first end 13 and extends toward the second end 14, and the communication component 40, the control component 50 and the power supply component 60 can be placed in the second chamber 12 via the first end 13.

[0052] In one embodiment of the present application, at least one first fixing portion 71 is provided, and each first fixing portion 71 is connected to the side wall of the housing 10. Figure 1 As shown, the first fixing portion 71 includes a connecting ear 711 and a second fixing seat 712, a gap 73 is formed between the second fixing seat 712 and the housing 10, and the second fixing seat 712 is provided with a plurality of second fixing holes 7121, which are arranged at intervals along the length direction of the housing 10. The arrangement of the first fixing portion 71 facilitates the physician to adjust the position of the second fixing seat 712 according to needs so as to better fix it to the broken bone.

[0053] During the operation, based on the setting position of the patient's shell 10, it is necessary to adjust the fixing position of the first fixing part 71. The doctor generally needs to bend the first fixing part 71, and the setting form of the connecting ear 711 and the second fixing seat 712 is convenient for the adjustment member (such as titanium plate forming pliers, titanium plate bending pliers, titanium plate shearing pliers, etc.) to clamp the second fixing seat 712 to bend the second fixing seat 712, thereby adjusting the shape of the second fixing seat 712 to adapt to the bone surface. Bending here refers to bending the second fixing seat 712 along the thickness direction of the shell 10. For example, the end of the second fixing seat 712 away from the connecting ear 711 can be slightly bent to adapt to the convex or concave bone surface; or the second fixing seat 712 and the connecting ear 711 can be bent appropriately in the thickness direction of the shell 10 according to the situation. At the same time, according to actual needs, the second fixing seat 712 can also be cut in the length direction.

[0054] Alternatively, if Figure 4 As shown, two first fixing parts 71 are provided, and the two first fixing parts 71 are symmetrically distributed on both sides of the housing 10. The provision of the two first fixing parts 71 ensures that the housing 10 is firmly fixed on the broken bone.

[0055] In one embodiment of the present application, Figure 4As shown, the housing 10 includes a first positioning surface 15, a second positioning surface 16 and a transition surface 17. The first positioning surface 15 is arranged opposite to the second positioning surface 16. The first positioning surface 15 and the second positioning surface 16 are planes. The transition surface 17 connects the first positioning surface 15 and the second positioning surface 16. The transition surface 17 is a smooth curved surface. The plane arrangement of the first positioning surface 15 and the second positioning surface 16 ensures that the housing 10 has a larger contact surface with the broken bone and soft tissue, which is convenient for fitting; the smooth arrangement of the transition surface 17 can avoid cutting or scratching the soft tissue and play a protective role.

[0056] Please refer to Figure 3 , the first chamber 11 extends from the first end 13 to the second end 14, passing through both ends of the housing 10; the second chamber 12 extends from the first end 13 toward the second end 14, and the second chamber 12 does not pass through the housing 10. In one embodiment of the present application, Figure 1 As shown, the implantable bone lengthening device 100 further includes a first end cap 18 and a second end cap 19. The first end cap 18 is disposed at the first end 13 of the housing 10 and is detachably connected to the end surface of the housing 10 at the first end 13. The first end cap 18 is used to block the opening of the first chamber 11 and the opening of the second chamber 12 to prevent the components located in the first chamber 11 and the second chamber 12 from falling out of the first chamber 11 and the second chamber 12 through the first end 13 of the housing 10. The second end cap 19 is disposed at the second end 14 of the housing 10 and is detachably connected to the end surface of the housing 10 at the second end 14. The second end cap 19 is used to block the opening of the first chamber 11 located at the second end 14 of the housing 10 to prevent the components in the first chamber 11 from falling out of the first chamber 11 through the second end 14 of the housing 10. The second end cap 19 is provided with an avoidance opening 191 for the telescopic assembly 20 to pass through, so as to facilitate the extension and retraction of the telescopic assembly 20.

[0057] It should be noted that, since the implantable bone lengthening device 100 needs to be implanted in human tissue, the first end cap 18 and the second end cap 19 are both sealed with the housing 10 to ensure the sealing of the first chamber 11 and the second chamber 12 .

[0058] The structure of the housing 10 may be in any suitable form, including but not limited to integral molding and splicing.

[0059] In one embodiment of the present application, the housing 10 is integrally formed to ensure overall structural strength and facilitate processing and manufacturing.

[0060] In another embodiment of the present application, the shell 10 adopts a splicing structure. Optionally, the shell 10 includes a first part and a second part arranged along its thickness direction, and the first part and the second part enclose a first chamber 11 and a second chamber 12. When assembling the whole, first position the telescopic component 20 and the drive component 30 at the corresponding positions of the first part, position the electrical components such as the communication component 40, the control component 50 and the power supply component 60 at the corresponding positions of the second part, and apply sealant at the joint of the first part and the second part, then dock and fix the first part and the second part, and weld the first part and the second part to ensure the connection strength between the two. The shell 10 with a splicing structure facilitates the installation and positioning of the various components inside the shell 10 to reduce the difficulty of installation and improve assembly efficiency.

[0061] In one embodiment of the present application, Figure 1 As shown, the telescopic assembly 20 includes a telescopic rod 21, which is disposed in the first chamber 11 and slidably cooperates with the inner wall of the housing 10. The second fixing portion 72 is detachably connected to the telescopic rod 21, and when the telescopic rod 21 is in an initial state, the second fixing portion 72 is located outside the housing 10. The telescopic rod 21 slides relative to the housing 10 to achieve the stretching of the two broken bones. It should be noted that the telescopic rod 21 is sealed with the second end cover 19 to ensure the sealing of the first chamber 11.

[0062] like Figure 1 and Figure 4 As shown, the second fixing portion 72 includes a connecting seat 721 and a first fixing seat 722 connected to each other. The connecting seat 721 is connected to the end of the telescopic rod 21. The first fixing seat 722 is an L-shaped structure, and the first fixing seat 722 is arranged outside the connecting seat 721. The first fixing seat 722 includes a first seat body 7221 and a second seat body 7222. The first seat body 7221 extends along the length direction of the telescopic rod 21, and the second seat body 7222 is arranged perpendicular to the length direction of the telescopic rod 21. The first seat body 7221 and the second seat body 7222 are respectively provided with a plurality of first fixing holes 7223. The connecting seat 721 can realize the connection between the first fixing seat 722 and the telescopic rod 21, so as to facilitate the positioning of the first fixing seat 722 and the broken bone; the arrangement of the first fixing seat 722 saves the overall space occupation under the premise of ensuring a large contact surface with the broken bone.

[0063] In order to adapt to different bone surfaces, the first fixing seat 722 can be bent by the adjusting piece to adjust the fixing position of the first fixing seat 722. The bending here means bending the first fixing seat 722 along the thickness direction of the shell 10. For example, the end of the second seat body 7222 away from the first seat body 7221 can be slightly bent to adapt to the convex or concave bone surface. At the same time, according to actual needs, the second seat body 7222 can also be cut in the length direction.

[0064] Optionally, the connection seat 721 is sleeved on the outside of the telescopic rod 21 and connected to the telescopic rod 21 through a pin 74 to ensure the connection strength between the connection seat 721 and the telescopic rod 21 and facilitate the rapid connection between the connection seat 721 and the telescopic rod 21. Figure 1 and Figure 4 As shown, a first mounting hole 7211 is formed on the connecting seat 721, and a second mounting hole 211 corresponding to the first mounting hole 7211 is formed on the telescopic rod 21. During assembly, the connecting seat 721 and the telescopic rod 21 are locked by a pin 74 passing through the first mounting hole 7211 and the second mounting hole 211.

[0065] In one embodiment of the present application, Figure 1 As shown, the driving assembly 30 includes a motor 31 and a lead screw 32. The motor 31 is installed in the first chamber 11, the lead screw 32 is connected to the output end of the motor 31, the telescopic rod 21 is threadedly matched with the lead screw 32, and the motor 31 is used to drive the lead screw 32 to rotate, so as to drive the telescopic rod 21 to extend or retract relative to the housing 10. The telescopic accuracy of the telescopic rod 21 is ensured by the driving form of the motor 31 and the lead screw 32, so as to facilitate the precise control of the telescopic amount of the telescopic rod 21.

[0066] Optionally, the motor 31 is a stepper motor 31 , and the stepper motor 31 can accurately control the rotation of the lead screw 32 to achieve accurate control of the telescopic amount of the telescopic rod 21 .

[0067] In one embodiment of the present application, Figure 1 As shown, the side wall of the telescopic rod 21 is provided with a slider 212. Figure 5 As shown, the side wall of the first chamber 11 is provided with a slide groove 111 corresponding to the slider 212, and the slider 212 is configured to be movably arranged in the slide groove 111. Through the cooperation between the slider 212 and the slide groove 111, it is ensured that the telescopic rod 21 moves flexibly and stably relative to the housing 10.

[0068] Optionally, the slider 212 is arranged at a position of the telescopic rod 21 close to the first end 13 of the shell 10. When the telescopic rod 21 extends outwardly to a longer length relative to the shell 10, the slider 212 can be blocked by the second end cover 19 to prevent the telescopic rod 21 from sliding out of the first chamber 11.

[0069] It should be noted that the housing 10 , the telescopic rod 21 , the lead screw 32 , the first end cover 18 , and the second end cover 19 are all made of hard metals, alloys, or polymers with good biocompatibility.

[0070] In one embodiment of the present application, the communication component 40 includes a communication chip and an antenna, and the communication chip and the external control device realize data exchange and control through non-contact communication technology. The communication technology includes but is not limited to Bluetooth technology, near field communication technology, and wireless local area network technology.

[0071] In one embodiment of the present application, the control component 50 includes a control unit, which can be a controller. The implantable bone lengthening device 100 also includes a storage unit 90, which can be a memory. The storage unit 90 is a storage space for running programs and generating data required by the implant (abbreviation of the implantable bone lengthening device 100), and is a necessary component to support the normal operation of the control component 50. The control unit is the computing and control core of the implant, and is the final execution unit for information processing and program operation. It is responsible for regulating the functions of the drive component 30, the communication component 40 and the additional sensors. Figure 2 , which is a control relationship diagram of various components of the implantable bone lengthening device 100 of the present application.

[0072] The implantable bone lengthening device 100 also includes a sensor unit 80. The sensor unit 80 is electrically connected to the control component 50, and the control component 50 can receive the data signal sent by the sensor unit 80, process the data signal, and then control the drive component 30 to perform an action. The sensor unit 80 includes but is not limited to a temperature sensor, a pressure sensor, and a pH sensor. The additional sensor can measure and record the changes in temperature, pressure, pH value, etc. at the fracture in real time to assist the physician in judging the growth between the broken bones.

[0073] It should be noted that the power supply assembly 60 includes a battery pack, which includes but is not limited to rechargeable / non-rechargeable lithium batteries, dry batteries, etc., so as to provide power to various electrical components.

[0074] The implantable bone lengthening device 100 provided in the present application has the function of adjusting displacement according to program settings, and can record and transmit operation records. The implantable bone lengthening device 100 of the present application is intelligent, can autonomously control and record the extension distance through a pre-set program, and can be adjusted and the results can be read through an external control device. The external control device here is a control medium for realizing human-computer interaction of the implantable bone lengthening device 100, including but not limited to mobile phone applications, controllers, etc. The key is that it can conveniently and safely interact and control information with the implantable bone lengthening device 100 in a non-contact manner. The process of data interaction and control of the implantable bone lengthening device 100 through an external control device is generally: ① secret key verification; ② record matching; ③ upload instructions or programs; ④ execute instructions or programs; ⑤ feedback the execution results and record. Such as Figure 6 As shown, it is a working flow chart of the implantable bone lengthening device 100 of the present application.

[0075] It should be pointed out that the implantable bone lengthening device 100 is not limited to the lengthening of the mandible, but can also be applied to the lengthening of bones in other parts; implantable bone lengthening devices 100 of different sizes and specifications can be selected according to different application environments.

[0076] It should be noted that, in the absence of conflict, the features in the embodiments of this application may be combined with each other.

[0077] The above description is only the preferred embodiment of the present application and is not intended to limit the present application. For those skilled in the art, the present application may have various modifications and variations. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present application shall be included in the protection scope of the present application.

Claims

1. An implantable bone lengthening device, characterized in that: include: A housing, wherein a first fixing portion is provided on the housing; A telescopic component is inserted into the housing and slidably cooperates with the housing, and a second fixing portion is provided at the protruding end of the telescopic component; A driving assembly, disposed in the housing, for driving the telescopic assembly to extend or retract into the housing; A communication component, disposed in the housing, for realizing data exchange and manipulation with an external control device in a non-contact manner; A control component is disposed in the housing, the drive component and the communication component are both electrically connected to the control component, and the control component is used to respond to the communication data of the communication component to control the operation of the drive component; A power supply component, disposed in the housing, for supplying power to the drive component, the communication component and the control component; A first chamber and a second chamber are formed inside the housing, the telescopic assembly and the driving assembly are arranged in the first chamber, and the communication assembly, the control assembly and the power supply assembly are arranged in the second chamber; The telescopic assembly includes a telescopic rod, the telescopic rod is disposed in the first chamber and slidably cooperates with the inner wall of the shell, the second fixing portion is detachably connected to the telescopic rod, and when the telescopic rod is in an initial state, the second fixing portion is located outside the shell; The second fixing portion includes a connecting seat and a first fixing seat connected to each other, the connecting seat is connected to the end of the telescopic rod, the first fixing seat is an L-shaped structure, the first fixing seat is arranged outside the connecting seat, the first fixing seat includes a first seat body and a second seat body, the first seat body extends along the length direction of the telescopic rod, the second seat body is arranged perpendicular to the length direction of the telescopic rod, and the first seat body and the second seat body are respectively provided with a plurality of first fixing holes; The driving assembly includes a motor and a lead screw, wherein the lead screw is connected to the output end of the motor, the telescopic rod is an internally hollow structure, a threaded hole corresponding to the lead screw is formed inside the telescopic rod, the telescopic rod is threadably matched with the lead screw, and the motor is used to drive the lead screw to rotate so as to drive the telescopic rod to extend or retract relative to the housing.

2. The implantable bone lengthening device according to claim 1, characterized in that: The side wall of the telescopic rod is provided with a sliding block, the side wall of the first chamber is provided with a sliding groove corresponding to the sliding block, and the sliding block is configured to be movably arranged in the sliding groove.

3. The implantable bone lengthening device according to claim 1, characterized in that: There is at least one first fixing part, each of which is connected to the side wall of the shell, the first fixing part includes a connecting ear and a second fixing seat, there is a gap between the second fixing seat and the shell, the second fixing seat is provided with a plurality of second fixing holes, and the plurality of second fixing holes are spaced apart along the length direction of the shell.

4. The implantable bone lengthening device according to claim 1, characterized in that: Two first fixing parts are provided, and the two first fixing parts are symmetrically distributed on both sides of the shell.

5. The implantable bone lengthening device according to claim 1, characterized in that: The shell includes a first positioning surface, a second positioning surface and a transition surface, the first positioning surface is arranged opposite to the second positioning surface, the first positioning surface and the second positioning surface are planes, the transition surface connects the first positioning surface and the second positioning surface, and the transition surface is a smooth curved surface.

6. The implantable bone lengthening device according to claim 1, characterized in that: The implantable bone lengthening device also includes: The sensor unit includes a temperature sensor, a pressure sensor, and a pH sensor.

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