CN112915389A - Bone growth assisting system and flexible magnetic field generator - Google Patents
Bone growth assisting system and flexible magnetic field generator Download PDFInfo
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- CN112915389A CN112915389A CN202110073260.1A CN202110073260A CN112915389A CN 112915389 A CN112915389 A CN 112915389A CN 202110073260 A CN202110073260 A CN 202110073260A CN 112915389 A CN112915389 A CN 112915389A
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- 210000000988 bone and bone Anatomy 0.000 abstract description 21
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- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61N—ELECTROTHERAPY; MAGNETOTHERAPY; RADIATION THERAPY; ULTRASOUND THERAPY
- A61N2/00—Magnetotherapy
- A61N2/02—Magnetotherapy using magnetic fields produced by coils, including single turn loops or electromagnets
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- Magnetic Treatment Devices (AREA)
Abstract
The present application provides a bone growth aid system, a flexible magnetic field generator, comprising: a sleeve; a magnetic rotating member disposed in the sleeve; the speed reducer is arranged in the sleeve and is matched and connected with the rotating piece; the transmission shaft is arranged in the sleeve and is matched and connected with the speed reducer, and the extension rod is at least partially arranged between the transmission shaft and the sleeve, is matched and connected with the transmission shaft and is driven by the transmission shaft to move axially relative to the sleeve; and the flexible magnetic field generator is detachably arranged outside the sleeve in a surrounding manner and is used for driving the rotating piece to rotate. Thereby, growth of bone is assisted.
Description
Technical Field
The application relates to the technical field of medical use, in particular to a bone growth assisting system and a flexible magnetic field generator.
Background
In the prior art, in operations of treating unequal lower limb, bending and comminuted fracture or broken bone and increasing height of bones of patients, a method of fixing a bracket or an intramedullary nail in vitro is adopted to assist the patients to cure diseases. The commonly used external fixation support comprises a unilateral external fixation support or a circular fixation support, and the intramedullary nail is of a mechanical type, an electric type and a magnetic type. The skeleton can be effectively fixed and the dislocation of the skeleton can be avoided by a method of fixing the bracket or the intramedullary nail in vitro.
In the process of realizing the prior art, the inventor finds that: both external fixation stents and intramedullary nails require long periods of bed rest to recover after the surgical procedure. Physical discomfort due to slight movement of the patient often occurs during recovery, and the number of occurrences of discomfort often occurs. Meanwhile, during the slight movement of the patient, the position and shape of the external fixation bracket or the intramedullary nail are also changed, thereby affecting the expected effect of the surgery of the patient. Both external fixation stents and intramedullary nails can also cause other conditions to occur in patients during treatment, such as: needle tract infection, knee joint flexion contracture, scar contracture, external fixation frame fracture, femur fracture caused by falling down in femoral extension operation, hip joint subluxation, delayed bone nonunion, deep infection, premature consolidation and the like.
Therefore, there is a need to provide a stable bone growth system.
Disclosure of Invention
The embodiment of the application provides a technical scheme of a bone growth assisting system with stability.
Concretely, a bone growth system, flexible magnetic field generator, includes:
a sleeve;
a magnetic rotating member disposed in the sleeve;
the speed reducer is arranged in the sleeve and is matched and connected with the rotating piece;
the transmission shaft is arranged in the sleeve and is matched and connected with the speed reducer;
the extension rod is at least partially arranged between the transmission shaft and the sleeve, is matched and connected with the transmission shaft, and is driven by the transmission shaft to move axially relative to the sleeve;
and the flexible magnetic field generator is detachably arranged outside the sleeve in a surrounding manner and is used for driving the rotating piece to rotate.
Further, the flexible magnetic field generator comprises a plurality of discrete magnetic field generating units.
Further, the magnetic field generating unit includes: a winding module for reinforcing magnetic flux; and a winding coil wound outside the winding module.
Further, the magnetic field generating unit further includes a housing accommodating the winding coil and the winding module therein.
Further, the flexible magnetic field generator further comprises an ergonomic inner wall member for attachment to a human body surface.
Further, the flexible magnetic field generator further comprises a storage bag for storing the magnetic field generating unit.
Furthermore, the flexible magnetic field generator also comprises a locking mechanism for limiting when the flexible magnetic field generator is attached to a human body.
A flexible magnetic field generator comprising:
an ergonomic inner wall member for attachment to a human body surface;
a plurality of receiving bags fixedly arranged on the inner wall piece;
a magnetic field generating unit housed in the housing bag;
further, the flexible magnetic field generator further comprises a housing directly accommodating and mounting the magnetic field generating unit.
Further, the inner contour of the inner wall element matches the outer contour of an arm, a leg, a waist, a chest or a neck.
The technical scheme provided by the embodiment of the application at least has the following beneficial effects: through the bone growth assisting system and the flexible magnetic field generator, the value of the magnetic field generator can be changed in real time according to the physical condition of the patient, so that the expected effect can be achieved in the postoperative recovery process of the patient.
Drawings
The accompanying drawings, which are included to provide a further understanding of the application and are incorporated in and constitute a part of this application, illustrate embodiment(s) of the application and together with the description serve to explain the application and not to limit the application. In the drawings:
fig. 1 is a schematic structural diagram of a bone growth promoting system according to an embodiment of the present disclosure.
Fig. 2 is a schematic structural diagram of a flexible magnetic field generator according to an embodiment of the present application.
Bone growth assistance system 100
Flexible magnetic field generator 20
Rotating member 11
Speed reducer 12
Extension pole 14
Magnetic generating module bag 22
Magnetic generating module housing 26
Detailed Description
In order to make the objects, technical solutions and advantages of the present application more apparent, the technical solutions of the present application will be described in detail and completely with reference to the following specific embodiments of the present application and the accompanying drawings. It should be apparent that the described embodiments are only some of the embodiments of the present application, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present application.
Referring to fig. 1, the present application discloses a bone growth promoting system 100 comprising: a sleeve 10; a magnetic rotor 11 disposed in the sleeve 10; a reducer 12 disposed in the sleeve 10 and coupled to the rotor 11; a transmission shaft 13 disposed in the sleeve 10 and coupled to the reducer 12; an extension rod 14 which is at least partially arranged between the transmission shaft 13 and the sleeve 10, is matched and connected with the transmission shaft 13 and is driven by the transmission shaft 13 to move axially relative to the sleeve 10; a flexible magnetic field generator 20 detachably enclosed outside the sleeve 10 for driving the rotation member 11 to rotate.
Specifically, the sleeve 10 is used to provide a structure for accommodating the rotating member 11, the speed reducer 12, the transmission shaft 13 and the extension rod 14. At least a part of the rotating member 11, the speed reducer 12, the transmission shaft 13 and the extension rod 14 is arranged in the sleeve 10.
Specifically, the rotating member 11 serves as an active member in the bone growth assisting system 100, and can provide torque according to the rotation motion of the rotating member. Which in the specific scenario may be represented by ratchet rotor 11, rotor 11, motor rotor 11, etc. When the rotating member 11 is a ratchet rotating member 11, the ratchet rotating member 11 can be driven to rotate mechanically. The ratchet wheel rotating member 11 can be driven to rotate by pressing, for example. When the rotor 11 is a rotor 11, the rotor 11 can be driven to rotate by applying a rotating magnetic field. The permanent magnet rotor rotating member 11 may be driven to rotate by applying an external rotating magnetic field, for example. When the rotating member 11 is the motor rotating member 11, the motor rotating member 11 may be driven to rotate by applying power. The motor rotor 11 can be driven in a rotational movement, for example by emitting an electrical signal.
It is particularly emphasized that a stable working state is required in view of the fact that the rotation member 11 serves as an active member in the bone growth assisting system 100 to provide a torque by its own rotation motion. Therefore, when the rotor 11 is a rotor 11, the present application prefers permanent magnet materials to make the rotor 11. So as to prevent the occurrence of the failure of the operation of the rotary member 11.
It is understood that the rotating member 11 of the present application serves as a power source for the bone growth promoting system 100. Therefore, as long as the device providing the torque is regarded as the rotating member 11 described in the present application. The described embodiments are only some embodiments of the present application and not all embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present application.
The speed reducer 12 is used to reduce the rotation speed of the rotor 11, thereby increasing the torque provided by the rotor 11. It should be noted that the reducer 12 may be a multi-stage planetary reducer 12 or a harmonic reducer 12. When the speed reducer 12 is a multi-stage planetary gear speed reducer 12, the multi-stage planetary gear speed reducer 12 is connected in series with at least three stages, and the single-stage reduction ratio of the multi-stage planetary gear speed reducer 12 is 1: 4. The multi-stage planetary reduction gear 12 therefore has a reduction ratio of at least 1: 64. When the reducer 12 is a harmonic reducer 12, the single reduction ratio of the harmonic reducer 12 is at least 1: 30. Considering that the harmonic speed reducer 12 can achieve a larger reduction ratio in a single stage of the harmonic speed reducer 12 as compared with the multi-stage planetary gear speed reducer 12 in the same size. And the harmonic reducer 12 has few parts and is easy to maintain. Moreover, the harmonic reducer has the advantages of no back clearance, compact structure, light weight and the like. The present retarder 12 is therefore preferably a harmonic retarder 12.
Specifically, the harmonic reducer 12 includes a wave generator, a flexible wheel, and a rigid wheel. Wherein, the flexible wheel is an external gear which is easy to deform. The rigid wheel has an inner gear that meshes with an outer gear of the flexible wheel. The wave generator is a member for controllably elastically deforming the compliant wheel. It is noted that at least one end of the wave generating member is provided with a cam. The flexible wheel sleeve is arranged outside the wave generating piece. The rigid wheel is sleeved outside the flexible wheel. It is also noted that the wave generating member is coupled to the rotary member 11. The number of rigid gear teeth is greater than the number of flexible gear teeth.
In operation, the wave generating member rotates with the rotary member 11. The rigid wheel is used as a fixed part, and the flexible wheel is used as a driven part. When the wave generator is installed in the flexible wheel, the cross section of the cam part of the flexible wheel corresponding to the wave generator is changed from original circular shape to convex end, the external teeth near the convex end of the long shaft are completely meshed with the internal teeth of the rigid wheel, and the external teeth near the two ends of the short shaft are completely separated from the internal teeth of the rigid wheel. The teeth of other sections on the circumference are in a transition state of engagement and disengagement. When the wave generating member continuously rotates, the deformation of the flexible wheel is continuously changed, so that the meshing state of the flexible wheel and the rigid wheel is also continuously changed. Thereby realizing that the flexible wheel rotates slowly relative to the rigid wheel along the opposite direction of the rotation of the wave generating piece. It is also to be emphasized that, to meet the yielding characteristics, the flexible wheel is made of an elastic material. In order to effectively prevent the gear from losing efficacy, the rigid wheel is made of hard materials.
The transmission shaft 13 is driven by the reduction gear 12. In the specific embodiment provided in the present application, the transmission shaft 13 may be a lead screw. It should be noted that, in order to ensure the normal operation of the transmission shaft 13, a coupling may be further disposed between the transmission shaft 13 and the speed reducer 12.
The extension rod 14 is coupled to the transmission shaft 13 and is axially linearly moved by an axial load generated by the transmission shaft 13. It should be noted that the extension rod 14 may be made of a high strength and hard material, considering that the extension rod 14 is the main component of the bone growth system 100 for bearing load.
A flexible magnetic field generator 20 is detachably disposed outside the sleeve 10 for driving the rotation member 11 to rotate. Specifically, the rotor 11 is magnetically driven to rotate by the flexible magnetic field generator 20. The rotation of the rotor 11 drives the reducer 12, the transmission shaft 13 and the extension rod 14 in the sleeve 10 to work.
Further, in a preferred embodiment provided herein, the flexible magnetic field generator 20 comprises a plurality of discrete magnetic field generating units.
Specifically, the magnetic field generating unit is the magnetic generating module 24. Flexible magnetic field generator 20 includes a number of discrete magnetic generating modules 24 rather than being formed from a single magnetic generating module 24. It is contemplated that flexible magnetic field generator 20 may be provided as a single magnetic generating module 24. The magnetic generating module 24 is configured to approximate the shape of the bone growth promoting portion of the patient. Therefore, the magnetic generating modules 24 are arranged, and the magnetic generating modules 24 can be arranged separately according to the bone growth promoting parts of the patient.
It should be noted that if the individual magnetic generating module 24 is configured to approximate the surgical site of a patient, the surgical site of each patient will be different, the magnetic generating module 24 will be configured according to the relative size of the surgical site of each patient, and the manufacturing cost of the magnetic generating module 24 is obviously not suitable for the individual customization of the patient and the manufacturing time of the magnetic generating module 24 is long. Moreover, the installation of a single magnetic generating module 24 relatively increases the difficulty of the medical staff in handling. Therefore, the magnetism generation module 24 is set to a standard specification. The magnetic generating modules 24 with a plurality of standard specifications can be reasonably arranged on each part of the body of different patients.
It will be appreciated that the flexible magnetic field generator 20, through the plurality of discrete magnetic generating modules 24, is essential to the installation of the flexible magnetic field generator 20. The magnetic generating modules 24 are provided in plural numbers, and may control several of the magnetic generating modules 24, or may control all of the magnetic generating modules 24. The flexible magnetic field generator 20 composed of a plurality of magnetic generating modules 24 is obviously more suitable for the needs of the operation patient. It will be appreciated that the plurality of discrete magnetic generating modules 24 described herein should not be construed as limiting the scope of the present application.
Further, in a preferred embodiment provided herein, the magnetism generation module 24 includes: a winding module for reinforcing magnetic flux; and a winding coil wound outside the winding module.
Specifically, the magnetic generator module 24 is configured to ensure that the magnetic generator module 24 can promote bone growth of the patient. In one embodiment provided herein, the magnetic generating module 24 is provided with a winding module that reinforces magnetic flux; and a winding coil wound outside the winding module.
It should be noted that the winding module reinforcing the magnetic flux and the winding coil wound outside the winding module may increase the magnetic flux. The magnetic flux is increased, that is, the area of the vertical magnetic field is enlarged, and the magnetic field is enhanced.
It is to be understood that in one embodiment provided herein, the magnetic generating module 24 is provided with a winding module for reinforcing magnetic flux, and a winding coil is wound around the outside thereof. When the winding coil of the rotating flexible magnetic field generator 20 is set as an ac excitation coil, the three-phase winding thereof generates a pulsating magnetic field under the action of the enhanced magnetic flux. A pulsating magnetic field is a magnetic field with a fixed spatial position and an amplitude varying between a positive and a negative maximum. If only one winding is arranged on the stator of the motor, a bipolar pulse vibration magnetic field is generated when alternating current is conducted. When the magnitude and direction of the current change, the magnitude and polarity of the magnetic field will change accordingly. The position of the magnetic field in space is always constant. If the magnetic field is approximately considered to be distributed along the circumference in a sine shape, and the space vector at the axis of the magnetic field is used for representing, and the vector length is used for representing the amplitude of the magnetic field, theoretical analysis can prove that the pulsating magnetic field generated by the single-phase winding which is electrified by the alternating current can be decomposed into two circular rotating magnetic fields which have half of the original pulsating magnetic field in amplitude and rotate in opposite directions at the same speed. It will be appreciated that the flexible magnetic field generator 20, when implemented as a wraparound alternating magnetic field, compensates for the magnetic field at other orientations to effectively drive the rotating member 11 within the intramedullary nail, even if the rotating member 11 within the sleeve 10 is not coaxial with the flexible magnetic field generator 20.
Further, in a preferred embodiment provided herein, the magnetic generating module 24 further includes a housing for accommodating the winding coil and the winding module therein.
Specifically, the wound coils and the wire winding module of the magnetic generation module 24 should be placed in the housing when secured around the patient. In the embodiment of the present application, the magnetic generating module housing 26 is used to house the magnetic generating module 24, and the magnetic generating module 24 is configured as a plurality of discrete magnetic generating modules 24 with standard specifications according to the above descriptions. The magnetic generating module 24 should also be provided with a standard housing, namely a magnetic generating module housing 26. The arrangement of the casing of the magnetic generation module 24 ensures that the winding module of the magnetic field unit and the winding coil wound outside the winding module can ensure that the shape of the winding module is not easy to change to a certain extent. So that the flexible magnetic field generator 20 exerts its stabilizing effect on the rotating member 11 at the surgical site of the patient. Of course, the magnetic generating module housing 26 is enclosed by the magnetic generating module bag 22. It will be appreciated that the wrapping between the magnetic generation module housing 26 and the magnetic generation module 24 as described herein is clearly not intended to limit the scope of the present application.
Further, in a preferred embodiment provided herein, the flexible magnetic field generator 20 further comprises an ergonomic inner wall member for attachment to a human body surface.
Specifically, the ergonomic inner wall member provided by the flexible magnetic field generator 20 is set as a sponge bag 21, so that the flexible magnetic field generator 20 can be prevented from directly contacting the body part of the patient and attached to the surface of the patient through the sponge bag 21, and the surgical part of the patient is indirectly contacted with the flexible magnetic field generator 20.
It will be appreciated that if the patient's surgical site is in direct contact with the magnetic generating module housing 26 of the flexible magnetic field generator 20, the plurality of magnetic generating module housings 26 thereof will require a plurality of different securing means for securing the magnetic generating module housings 26 thereof. The ergonomic inner wall piece is arranged to be a sponge bag 21, the sponge bag 21 is further arranged to be continuous and surrounding under the condition that the contact between the ergonomic inner wall piece and the surgical site of a patient is guaranteed not to be damaged, and the plurality of magnetic generation module shells 26 can be placed on the sponge bag 21 through the continuous and surrounding sponge bag 21. One side of the sponge bag 21 is wrapped on the operation position of the patient, and correspondingly, the other side is provided with a plurality of magnetic generation module shells 26. One side of the sponge bag 21 wraps the surgical site of the patient and the magnetic generating module shell 26 is placed on the other side of the sponge bag 21, so that the flexible magnetic field generator 20 enables the generating module shell to be stably attached to the surface of the human body through an ergonomic inner wall part.
Further, in a preferred embodiment provided herein, the flexible magnetic field generator 20 further comprises a receiving bag for receiving the magnetic field generating unit.
Specifically, a magnetic generation module shell 26 is placed on one side of a sponge bag 21 of the flexible magnetic field generator 20, the magnetic generation module shell 26 is placed through a magnetic generation module bag 22 on the sponge bag 21, one side, attached to the surface of a human body, of the magnetic generation module bag 22 is provided with an elastic cloth bag 23, and the other side of the magnetic generation module bag is made of common cloth. It should be understood that the specific form of the storage bag described herein is not intended to limit the specific scope of the present application.
It will be appreciated that the magnetic generating module pocket 22 on the sponge pocket 21 houses the winding module in the magnetic generating module housing 26. Put the winding module in the module casing 26 through magnetism promptly, magnetism takes place module casing 26 is taken place to magnetism parcel magnetism, and sponge bag 21 one side sets up magnetism and takes place module bag 22 for flexible magnetic field generator 20 is guaranteeing its magnetic field to take place the effect when, makes flexible magnetic field generator 20 can not cause the injury to patient's operation position or other positions again.
Further, in a preferred embodiment provided in the present application, the flexible magnetic field generator 20 further includes a locking mechanism for limiting the position of the flexible magnetic field generator 20 when the flexible magnetic field generator 20 is attached to the human body.
Specifically, in an embodiment provided by the present application, the locking mechanism of the flexible magnetic field generator 20 is configured as a magic tape 25, and the magic tape 25 used herein is a medical magic tape 25, that is, a bandage of the magic tape 25 is used in a sphygmomanometer frequently used in hospitals and drug stores. It will be understood that the specific form of the locking mechanism described herein, obviously, does not constitute a limitation on the specific scope of protection of the present application.
It can be understood that the stability of the magic tape 25 is ensured to a certain extent with respect to the body part of the patient. If the locking mechanism of the flexible magnetic field generator 20 is a mechanical locking mechanism, the surgical site of the patient may be punctured or the retraction mechanism may fall off, causing secondary injury to the patient.
Referring to fig. 2, a flexible magnetic field generator 20 includes: an ergonomic inner wall member for attachment to a human body surface; a plurality of magnetic generating module bags 22 fixedly arranged on the inner wall piece; a magnetic field generating unit housed in the magnetic generation module bag 22; and the locking mechanism is connected with the inner wall piece and can limit the inner wall piece to a human body.
In particular, the ergonomic inner wall member is attached to the surface of the human body, i.e., a plurality of consecutive sponge bags 21. A magnetic generation module bag 22 is arranged on the sponge bag 21, the magnetic generation module bag 22 is fixed on an ergonomic inner wall part, and a magnetic field generation unit is arranged in the magnetic generation module bag 22. The sponge bags 21 are connected through a locking mechanism, and the locking mechanism is a magic tape 25.
It should be noted that within the flexible magnetic field generator 20 is a housing that directly receives the magnetic generating module 24, i.e., the magnetic generating module housing 26. The magnetic generating module housing 26 is used to house the magnetic generating module 24, and the magnetic generating module 24 is configured as a plurality of standard magnetic generating modules 24 according to the above description. The magnetic field unit should also be provided with a standard housing, namely the magnetic generating module housing 26. The magnetic generating module housing 26 is configured to ensure that the shape of the winding module of the magnetic generating module 24 and the shape of the winding coil wound outside the winding module are not easily changed to some extent. So that the flexible magnetic field generator 20 exerts its stabilizing effect on the rotating member 11 at the surgical site of the patient.
It is important to note that in a preferred embodiment provided by the present application, the rotor 11 is selected to be a permanent magnet. The flexible magnetic field generator 20 is connected through a plurality of consecutive sponge bags 21 through a locking mechanism, and the flexible magnetic field generator 20 realizes a surrounding alternating magnetic field. Even if the permanent magnets are not coaxial with the flexible magnetic field generator 20, the magnetic fields in other orientations can be compensated to effectively drive the rotor 11 to rotate.
It will be appreciated that the ergonomic inner wall member of the flexible magnetic field generator 20, i.e. the sponge bag 21, is provided in a variety of types depending on the surgical site of the patient. Such as a sponge bag 21 that matches the contour of an arm, leg, waist, chest or neck.
One specific application of the present application is described below in which a portion of the bone growth promoting system 100 is embedded in bone. The sleeve 10 guides the bone growth promoting system 100 to be inserted into the marrow through the opening at the bone end. The other part, namely a flexible magnetic field generator 20, is arranged around the sleeve 10 to drive the rotating member 11 to rotate. The bone growth assisting system 100 is used for restoring and fixing the fractured bone in the medullary cavity along the physiological curvature of the medullary cavity as a means for treating the fracture.
The bone in-built bone growth system 100 may appear in a particular scene as an intramedullary extended nail. Scenes such as unequal lower limb length, bending, comminuted fracture or high bone fracture increase in daily life need medical treatment for the problems related to bones. The fractured bone portions of the patient may be fixed by the intramedullary extension nail using the intramedullary extension nail.
In a specific application scenario, the intramedullary extension nail comprises a sleeve 10, a rotating part 11, a speed reducer 12, a transmission shaft 13 and an extension rod 14.
The intramedullary extension nail may appear as a three-stage design in a particular application scenario. Respectively a first section, a second section and a third section of the intramedullary extension nail. It should be noted that the intramedullary nail is provided with two second locking holes perpendicular to the extending direction of the extension rod 14 on the first section. The second section of the intramedullary extension nail is used for driving the extension rod 14 to work. The third section of the intramedullary extension nail is driven by the second section to move axially through the extension rod 14, so as to guide the growth of human bones.
Another part of the bone growth promoting system 100 may in a particular scenario appear as a flexible magnetic field generator 20 externally attached to the bone. The flexible magnetic field generator 20 is connected by a plurality of consecutive sponge bags 21, and the two ends of the sponge bags are stuck and fixed by magic tapes 25. A plurality of elastic cloth bags 23 are arranged on one side of a sponge bag 21, a magnetic generation module shell 26 is arranged in each elastic cloth bag 23, a magnetic generation module bag 22 is arranged in each magnetic generation module shell 26, and a magnetic generation module 24 is arranged in each magnetic generation module bag 22. The rotating member 11 in the sleeve 10 is rotated by the flexible magnetic field generator 20, thereby driving the entire intramedullary extension nail.
In the specific embodiments provided herein, an intramedullary extension nail is inserted into the medullary bone through an opening at the fractured bone end of a patient.
It is noted that the intramedullary nail comprises a sleeve 10, a rotor 11 and a reducer 12.
Wherein the rotating member 11 is embodied as a permanent magnet driven by the flexible magnetic field generator 20 through magnetic force, and the reducer 12 is embodied as a harmonic reducer with a single-stage reduction ratio.
The flexible magnetic field generator 20 drives the rotor 11, i.e. the permanent magnet, to rotate via 5 magnetic generating modules 24. The rotor is decelerated by a speed reducer 12.
The harmonic reducer comprises a wave generating piece; a flexible wheel sleeved outside the wave generator and provided with an external gear; and the rigid wheel is sleeved outside the flexible wheel and is provided with an inner gear meshed with the outer gear of the flexible wheel. The number of teeth of the rigid gear is 82 teeth, and the number of teeth of the flexible gear is 80 teeth. The reduction ratio of the speed reducer 100 is 1: 40.
It should be noted that the specific assembly of the intramedullary nail may be represented by the penetration of the permanent magnet into the permanent magnet shaft and the fixation of the permanent magnet at both ends using a flat washer nut combination, so that the rotation of the permanent magnet drags the rotation of the shaft.
A thrust bearing is placed at the upper end of the permanent magnet shaft, and the wave generator is fixed on the shaft at the lower end through threaded connection. The lower end of the wave generator is fixed by a nut to prevent the wave generator from falling off in the rotating process.
And placing the permanent magnet combination into the second section of the intramedullary extension nail, and fixing the permanent magnet combination in the intramedullary nail by using the support ring and the U-shaped buckle.
In the third section of the intramedullary lengthening nail, a flexible wheel of the harmonic reducer is connected with a lead screw through a coupler, and a lead screw nut is arranged on the lead screw. The end of the screw rod is sleeved with a support ring and a U-shaped buckle to prevent the screw nut from falling off. The screw nut and the extension nail are connected through threads, so that the screw is driven to rotate by the rotation of the flexible wheel, and the extension nail is extended.
Then, according to the bending degree of the bone of the patient, the first section and the second section of the intramedullary extension nail are connected through threads and have included angles of a plurality of angles corresponding to the bending degree of the bone of the patient.
The second section and the third section of the intramedullary extension nail are connected through a coupler.
The intramedullary extension nail is embedded in bone marrow of the bone, and the third section of the intramedullary extension nail is arranged at the first part of the bone by a bolt through the first locking hole. The intramedullary nail first section is mounted to a second portion of the bone disconnected from the first portion by a bolt through a second locking hole. Thereby, the intramedullary extension nail is brought into a relatively stable configuration with the bone.
After operation, according to the condition of the growth and recovery of the broken bones in the body of the patient, the flexible magnetic field generator 20 wraps the parts of the patient, at which the bones are broken, through the sponge bag 21, and then the wrapped sponge bag is stuck and fixed by the magic tape 25. The magnetic generating module 24 in the flexible magnetic field generator 20 drives the rotating member 11 in the sleeve 10, i.e. the permanent magnet, to rotate, so that the extension rod 14, i.e. the intramedullary needle, which is arranged between the transmission shaft 13 and the sleeve 10, is coupled with the transmission shaft 13, and is driven by the transmission shaft 13 to move axially relative to the sleeve shaft 10, i.e. 1-2 mm of axial movement of the intramedullary needle.
Thereby guiding and promoting the growth of the broken bone parts. Until the disconnected bone site of the patient grows to a healing state.
It should be noted that the terms "comprises," "comprising," or any other variation thereof, are intended to cover a non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements does not include only those elements but may include other elements not expressly listed or inherent to such process, method, article, or apparatus. Without further limitation, the statement that there is an element defined as "comprising" … … does not exclude the presence of other like elements in the process, method, article, or apparatus that comprises the element.
The above description is only an example of the present application and is not intended to limit the present application. Various modifications and changes may occur to those skilled in the art. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present application should be included in the scope of the claims of the present application.
Claims (10)
1. A bone growth promoting system, comprising:
a sleeve;
a magnetic rotating member disposed in the sleeve;
the speed reducer is arranged in the sleeve and is matched and connected with the rotating piece;
the transmission shaft is arranged in the sleeve and is matched and connected with the speed reducer;
the extension rod is at least partially arranged between the transmission shaft and the sleeve, is matched and connected with the transmission shaft, and is driven by the transmission shaft to move axially relative to the sleeve;
and the flexible magnetic field generator is detachably arranged outside the sleeve in a surrounding manner and is used for driving the rotating piece to rotate.
2. A bone growth promoting system according to claim 1 wherein said flexible magnetic field generator comprises a plurality of discrete magnetic field generating units.
3. A bone growth promoting system as claimed in claim 2 wherein said magnetic field generating unit comprises:
a winding module for reinforcing magnetic flux;
and a winding coil wound outside the winding module.
4. A bone growth aid system according to claim 3 wherein said magnetic field generating unit further comprises a housing said wound coil and said winding module.
5. A bone growth promoting system according to claim 3 wherein said flexible magnetic field generator further comprises an ergonomic inner wall member for attachment to a body surface.
6. A bone growth promoting system according to claim 3 wherein said flexible magnetic field generator further comprises a receiving pocket for receiving said magnetic field generating unit.
7. A bone growth promoting system as claimed in claim 3, wherein said flexible magnetic field generator further comprises a locking mechanism for limiting the position of the flexible magnetic field generator when it is attached to the body.
8. A flexible magnetic field generator, comprising:
an ergonomic inner wall member for attachment to a human body surface;
a plurality of receiving bags fixedly arranged on the inner wall piece;
a magnetic field generating unit housed in the housing bag;
and the locking mechanism is connected with the inner wall piece and can limit the inner wall piece to a human body.
9. The flexible magnetic field generator of claim 8, further comprising a housing directly housing the magnetic field generating unit.
10. The flexible magnetic field generator of claim 8 wherein said inner wall member inner profile matches an outer profile of an arm, leg, waist, chest or neck.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202110073260.1A CN112915389A (en) | 2021-01-20 | 2021-01-20 | Bone growth assisting system and flexible magnetic field generator |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202110073260.1A CN112915389A (en) | 2021-01-20 | 2021-01-20 | Bone growth assisting system and flexible magnetic field generator |
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| Publication Number | Publication Date |
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| CN112915389A true CN112915389A (en) | 2021-06-08 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202110073260.1A Pending CN112915389A (en) | 2021-01-20 | 2021-01-20 | Bone growth assisting system and flexible magnetic field generator |
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| US20190290925A1 (en) * | 2018-03-21 | 2019-09-26 | Garwood Medical Devices, Llc | Method and system for bone regeneration |
| CN111759431A (en) * | 2020-07-28 | 2020-10-13 | 姬涛 | Magnetic drive bone end retracting/pressurizing device |
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| DE2116869A1 (en) * | 1970-04-06 | 1971-10-28 | Kraus W | Electrical device for promoting the formation of new bone and tissue substance |
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