A built-in electromagnetic remote-controlled mandibular distraction osteogenesis distraction device

Abstract

The present invention relates to a built-in electromagnetic remote control jaw bone distraction osteogenesis distraction device, comprising a distractor and an electromagnetic remote controller; the distractor comprises an outer sleeve with a slide rail inside, an inner adjustment rod, and nail holes are provided on the outer sleeve and the inner adjustment rod; the inner adjustment rod is slidably connected in the slide rail of the outer sleeve, an automatic driving device is fixed at the rear end inside the outer sleeve, and a plurality of slots distributed side by side are evenly provided on the inner adjustment rod; a magnetic key corresponding to the slot of the inner adjustment rod is provided on the outer sleeve through an elastic sheet, and the magnetic key can be telescopically passed through the telescopic hole on the side wall of the outer sleeve and placed in the slide rail; the electromagnetic remote controller comprises an electromagnetic coil that can be magnetically attracted to the magnetic key, a single chip microcomputer connected in series with the electromagnetic coil, and a power supply. The distractor of the present invention is built-in, reducing the probability of infection; the electromagnetic remote controller can control the distraction process of the inner distractor through the electromagnetic principle and accurately control the distraction length.

Description

Technical Field

[0001] The invention relates to the technical field of distraction devices, and in particular to a built-in electromagnetic remote-controlled mandibular distraction osteogenesis distraction device. Background Art

[0002] Distraction osteogenesis is an endogenous bone tissue engineering technology. It is achieved by cutting the bone and placing special distractors on both sides of the bone cutting line. After a certain delay period, the bone cutting gap is slowly distracted to widen it continuously and stimulate the body's tissue regeneration potential. New bone tissue is continuously formed in the distraction gap, and the muscles, nerves, blood vessels, skin, etc. around the bones are extended at the same time, thereby achieving the purpose of lengthening the bones.

[0003] Traditional distractors have certain disadvantages when used: (1) When placing a traditional distractor, the adjustment rod needs to extend from an additional incision. When installing the distractor, the position of the adjustment rod needs to be designed in advance. The outlet of the adjustment rod needs to be close to the skin, which limits the installation position. When the distractor is used on the limbs and other parts of the body, it is restricted. The adjustment rod extending out of the body affects the patient's normal life. (2) The traditional distractor requires a doctor to operate to adjust the distraction distance. The adjustment is made by rotating an external adjustment rod. The rotation accuracy is poor, the control is poor, and it is difficult for patients to operate. (3) The internal distraction device of the distractor is a spiral thin rod. It is common in clinical practice that the distractor cannot continue to distract due to excessive torque during distraction, and even the distraction rod breaks, resulting in distraction failure; (4) The distraction osteogenesis cycle is relatively long, and during this period, the additional incision of the adjustment rod needs to remain open for a long time. Since this incision is connected to the internal distraction osteogenesis area, the chance of infection is greatly increased, leading to osteogenesis failure; (5) After the distraction is completed, the distractor needs to be removed due to the elongation of the distractor, and additional scars will be left. Summary of the invention

[0004] The technical problem to be solved by the present invention is to provide a built-in electromagnetic remote-controlled mandibular distraction osteogenesis distraction device, in which the distractor is built-in and does not require the design of additional incisions, thereby reducing the chance of infection and improving the quality and success rate of distraction osteogenesis; the electromagnetic remote control can control the distraction process of the internal distractor through the electromagnetic principle, accurately control the distraction length, and the patient can operate it by himself.

[0005] In order to solve the above technical problems, the present invention provides the following technical solutions: a built-in electromagnetic remote-controlled mandibular distraction osteogenesis distraction device, comprising a distractor and an electromagnetic remote controller;

[0006] The tensioner comprises an outer sleeve with a slide rail inside and an inner adjustment rod, both of which are provided with nail holes; the inner adjustment rod is slidably connected to the slide rail of the outer sleeve, and an automatic driving device for driving the inner adjustment rod to slide in the slide rail is fixed to the rear end of the outer sleeve, and a plurality of slots distributed side by side are evenly provided on the inner adjustment rod; a magnetic key corresponding to the slot of the inner adjustment rod is provided on the outer sleeve through an elastic sheet, and the magnetic key can be telescopically passed through the telescopic hole on the side wall of the outer sleeve and placed in the slide rail;

[0007] The electromagnetic remote control includes an electromagnetic coil that can be magnetically attracted to a magnetic key, a single chip microcomputer and a power supply connected in series with the electromagnetic coil. When the electromagnetic coil is energized, magnetism is generated, and the magnetic key is attracted to move outward along the telescopic hole and extend out of the inner cavity of the slide rail. When the electromagnetic coil is powered off, the magnetism is lost, and the magnetic key moves inward along the telescopic hole and is inserted into the slide rail under the elastic force of the elastic sheet.

[0008] Based on the above technical solution, the automatic driving device is a spring device, the rear end of the internal adjusting rod is fixedly connected to the spring device and can slide in the slide rail under the elastic force of the spring device.

[0009] Compared with the prior art, the present invention has the following beneficial effects: the distraction device provided by the present invention has a built-in distractor, and a driving force is automatically applied by a spring device. There is no need to extend an adjustment rod outside the body, and no additional incision is designed. The placement position during distraction osteogenesis is relatively free, and it can be applied to most areas in the body that require distraction osteogenesis; moreover, the electromagnetic remote control can control the distraction process of the internal distractor through the electromagnetic principle, accurately control the distraction length, and the patient can operate it by himself. Postoperative distraction is relatively simple and easy, and the distraction length can be accurately determined each time, and different distraction plans can be set according to different patients; since there is no need to design an additional incision, it can be ensured that the distractor can perform its function inside the tissue during the distraction process, avoid the formation of a distraction osteogenesis area that is connected to the external environment, reduce the infection rate, and improve the quality and success rate of distraction osteogenesis; it can effectively improve the distraction osteogenesis effect, reduce the infection rate, accurately control the distraction osteogenesis length, reduce the number and length of skin incisions, and reduce scar formation. BRIEF DESCRIPTION OF THE DRAWINGS

[0010] Figure 1 It is a schematic diagram of the working principle of the stretching device of the present invention;

[0011] Figure 2 This is a schematic diagram of the matching relationship between the outer sleeve and the inner adjustment rod of the present invention;

[0012] Figure 3 It is a side view of the matching relationship between the outer sleeve and the inner adjustment rod of the present invention;

[0013] Figure 4This is a schematic diagram of the internal adjustment rod structure of the present invention;

[0014] The numbers in the figure are: 1-tensioner, 2-electromagnetic remote control, 21-electromagnetic coil, 22-single chip microcomputer, 23-power supply, 3-external sleeve, 31-slide rail, 4-internal adjustment rod, 41-card slot, 5-magnetic key, 51-elastic sheet, 6-spring device. DETAILED DESCRIPTION

[0015] In order to make the purpose, technical solution and advantages of the present invention more clearly understood, the present invention is further described in detail below in conjunction with the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are only used to explain the present invention and are not intended to limit the present invention.

[0016] Reference Figures 1 to 4 It can be seen that a built-in electromagnetic remote-controlled mandibular distraction osteogenesis distraction device includes a distractor 1 and an electromagnetic remote controller 2 for controlling the distraction operation of the distractor 1 .

[0017] The distractor 1 includes an outer sleeve 3 with a slide rail 31 inside, and an inner adjustment rod 4. The inner adjustment rod 4 is slidably connected in the slide rail 31 of the outer sleeve 3. Both the outer sleeve 3 and the inner adjustment rod 4 are provided with nail holes. Through osteotomy of the part requiring distraction osteogenesis, the distractor 1 is built in, and the outer sleeve 3 and the inner adjustment rod 4 are respectively fixed to the bone tissue at both ends of the osteotomy line through the nail holes; at the beginning, the bone ends are adjacent, and the distractor 1 is controlled to work through the electromagnetic remote control 2, so that the inner adjustment rod 4 slides forward a certain distance in the slide rail 31 of the outer sleeve 3 and stops to realize the distraction operation.

[0018] An automatic driving device is fixed at the rear end of the outer sleeve 3 to drive the internal adjusting rod 4 to slide in the slide rail 31. The automatic driving device is a spring device 6. The rear end of the internal adjusting rod 4 is fixedly connected to the spring device 6 and can slide in the slide rail 31 under the elastic force of the spring device 6.

[0019] The internal adjustment rod 4 is evenly provided with a plurality of slots 41 distributed side by side; the external sleeve 3 is provided with a magnetic key 5 corresponding to the slot 41 of the internal adjustment rod 4 through an elastic sheet 51, and the magnetic key 5 can be telescopically passed through the telescopic hole on the side wall of the external sleeve 3 and placed in the slide rail 31; the electromagnetic remote control 2 includes an electromagnetic coil 21 that can be magnetically attracted to the magnetic key 5, a single-chip microcomputer 22 connected in series with the electromagnetic coil 21, and a power supply 23.

[0020] When the electromagnetic coil 21 is energized, it generates magnetism, and the magnetic key 5 is attracted and moved outward along the telescopic hole and extended out of the inner cavity of the slide rail 31. The internal adjustment rod 4 slides in the slide rail 31 under the elastic force of the spring device 6. By setting the single-chip computer program, it can be used to control the adsorption time of the electromagnetic coil and the magnetic key each time, thereby accurately controlling the sliding distance of the internal adjustment rod; when the electromagnetic coil 21 loses its magnetism after power is cut off, the magnetic key 5 moves inward along the telescopic hole under the elastic force of the elastic sheet 51 and is inserted into the slide rail 31, and is inserted into the corresponding slot 41 of the internal adjustment rod 4 to lock the internal adjustment rod 4, fix the position of the internal adjustment rod 4, and realize the tensioning operation.

[0021] The distraction device provided by the present invention has a built-in distractor, and a driving force is automatically applied by a spring device. There is no need to extend an adjustment rod outside the body, and there is no need to design an additional incision. The placement position during distraction osteogenesis is relatively free, and it can be applied to most areas in the body that require distraction osteogenesis. Moreover, the electromagnetic remote control can control the distraction process of the internal distractor through the electromagnetic principle, accurately control the distraction length, and the patient can operate it by himself. Postoperative distraction is relatively simple and easy, and the distraction length can be accurately determined each time, and different distraction plans can be set according to different patients. Since there is no need to design an additional incision, it can be ensured that the distractor can perform its function inside the tissue during the distraction process, avoid the formation of a distraction osteogenesis area that is connected to the external environment, reduce the infection rate, and improve the quality and success rate of distraction osteogenesis. It can effectively improve the distraction osteogenesis effect, reduce the infection rate, accurately control the distraction osteogenesis length, reduce the number and length of skin incisions, and reduce scar formation.

Claims

1. A built-in electromagnetic remote-controlled mandibular distraction osteogenesis distraction device, characterized in that: Including a distractor and an electromagnetic remote controller; The tensioner comprises an outer sleeve with a slide rail inside and an inner adjustment rod, both of which are provided with nail holes; the inner adjustment rod is slidably connected to the slide rail of the outer sleeve, and an automatic driving device for driving the inner adjustment rod to slide in the slide rail is fixed to the rear end of the outer sleeve, and a plurality of slots distributed side by side are evenly provided on the inner adjustment rod; a magnetic key corresponding to the slot of the inner adjustment rod is provided on the outer sleeve through an elastic sheet, and the magnetic key can be telescopically passed through the telescopic hole on the side wall of the outer sleeve and placed in the slide rail; The electromagnetic remote control comprises an electromagnetic coil that can be magnetically attracted to a magnetic key, a single chip microcomputer connected in series with the electromagnetic coil, and a power supply. When the electromagnetic coil is energized, magnetism is generated, and the magnetic key is attracted and moved outward along the telescopic hole and extended out of the inner cavity of the slide rail. The internal adjustment rod (4) slides in the slide rail (31) under the elastic force of the spring device (6). By setting the single chip microcomputer program, it can be used to control the adsorption time of the electromagnetic coil and the magnetic key each time, thereby accurately controlling the sliding distance of the internal adjustment rod. When the electromagnetic coil loses its magnetism after power is turned off, the magnetic key moves inward along the telescopic hole under the elastic force of the elastic sheet and is inserted into the slide rail, and is inserted into the corresponding card slot (41) of the internal adjustment rod (4) to lock the internal adjustment rod (4), fix the position of the internal adjustment rod (4), and realize the tensioning operation. The automatic driving device is a spring device, the rear end of the internal adjusting rod is fixedly connected to the spring device and can slide in the slide rail under the elastic force of the spring device.

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