Automatic tightening device for carpal fracture

Abstract

The utility model discloses an automatic tightening device for carpal fracture, and relates to the field of fracture fixing devices. A housing; a breadboard; the OLED display screen, the button cell, the button and the LED lamp are installed outside the shell; the infrared sensor force measurement module, the micro-motion direct current motor and the single chip microcomputer are installed in the shell; the OLED display screen, the button cell, the button, the LED lamp, the infrared sensor force measurement module and the micro-motion direct current motor are all connected with the single chip microcomputer; the coil is arranged on an output shaft of the micro-motion direct current motor; a plurality of wire grooves are formed in the outer wall of the wrist distal radius fracture fixing splint; one end of the polyester rope is fixed on the wrist distal radius fracture fixing splint, is wound on a wire slot of the wrist distal radius fracture fixing splint and then penetrates through the shell to enter the interior, and the middle part of the polyester rope is hung on the infrared sensor force measuring module, is wound by the winding ring and then is fixed by the winding ring. The device is simple and safe to operate and low in cost.

Description

Technical Field

[0001] The utility model relates to the technical field of fracture fixation devices, in particular to an automatic tightening device for wrist bone fractures. Background Art

[0002] According to the investigation of the treatment methods of patients with distal radius fractures in the hospital, it is found that the most common fixation method nowadays is to use a fixed splint, whose main structure is composed of four independent plates, and gauze is used to wrap and fix the relative positions between the splints. The wrapping method generally uses three positions, upper, middle and lower, to fix the plate and the patient's wrist completely, thereby achieving bone fixation.

[0003] However, the investigation also found problems with existing fixed splints. On the one hand, the doctor pointed out that the distal radius fracture of the wrist is generally swollen, and the swelling usually subsides quickly, which leads to the fixation splint being loosened after being fixed to the patient's injury. As the swelling subsides in a short period of time, the splint cannot be completely fitted with the distal radius fracture of the patient's wrist, and thus loses its fixation effect. This kind of fixed splint in an under-fixed state not only cannot help the patient's bones return to their original position, but may even cause more serious displacement. Therefore, in order to avoid this situation, the doctor will propose a follow-up visit time based on the situation of the distal radius fracture of the patient's wrist, and the follow-up visit time is generally within one month. This high-frequency follow-up visit will continue until the patient is fully recovered. For doctors, the repetitive work of tightening the fixed splint has greatly increased the workload. Some doctors even suggest that the patient's family members adjust the patient's fixed splint at home, but most patients and their families are afraid of tightening the fixed splint by themselves, and still choose to go to the hospital more frequently to ask the doctor to adjust the fixed splint. In general, the existing work of manually tightening and fixing the splint with gauze is not only a waste of medical resources and doctors' working time, but also a waste of patients' time.

[0004] On the other hand, because doctors can only estimate the time it takes for the swelling of the patient's wrist to subside, it is theoretically difficult to confirm the time when the splint cannot achieve the fixation effect. In fact, it is very common for the splint to fail for several days, which greatly affects the patient's recovery process.

[0005] By summarizing the existing problems, we found that the contradictions mainly focus on the use of gauze in the fixation of the splint, which needs to be loosened, adjusted and then tightened. Although the work is very simple for doctors, it is difficult for patients and their families to master some links, which leads to problems. For example, because the patient's family members are not clear about the force required for tightening, the force is too small, resulting in the splint being in an under-fixed state, or the force is too large, causing compression of the patient's blood vessels. In summary, the method of fixing with gauze and tightening manually is too complicated. Utility Model Content

[0006] In order to solve the problems existing in the prior art, the utility model provides an automatic tightening device for wrist bone fractures.

[0007] The technical solutions adopted by the utility model to solve the technical problems are as follows:

[0008] The utility model provides an automatic tightening device for wrist bone fracture, comprising: a wrist distal radius fracture fixing splint, and also comprising:

[0009] A shell mounted on a wrist distal radius fracture fixation splint;

[0010] A breadboard fixedly mounted on the lower end of the housing;

[0011] OLED display, coin cell battery, push button, and LED light mounted on a breadboard and outside the enclosure;

[0012] An infrared sensor force measuring module, a micro-motion DC motor and a single-chip microcomputer are installed on a breadboard and located inside the housing; the OLED display, button battery, button, LED light, infrared sensor force measuring module and micro-motion DC motor are all connected to the single-chip microcomputer;

[0013] A winding coil mounted on the output shaft of a micro-motion DC motor;

[0014] A plurality of wire grooves are provided on the outer wall of the wrist distal radius fracture fixation splint;

[0015] A polyester rope, one end of which is fixed on a wrist distal radius fracture fixation splint, is wound through a wire groove of the wrist distal radius fracture fixation splint and then passes through an outer shell to enter the interior; a middle portion of the polyester rope is hung on an infrared sensor force measuring module, is then wound through a winding coil and then fixed by the winding coil.

[0016] Furthermore, the infrared sensor force measuring module includes an iron wire 1, a spring, a light shielding plate, an iron wire 2 and an infrared sensor fixed on a breadboard; one end of the iron wire 1 is fixed on the outer casing, and the other end of the iron wire 1 is hung on one end of the spring; the other end of the spring is hung on one end of the iron wire 2, and the other end of the iron wire 2 passes through the light shielding plate and is placed in the infrared sensor; the middle part of the polyester rope is hung on the other end of the iron wire 2 after passing through the light shielding plate.

[0017] Furthermore, a square hole is provided on the side of the shell for passing the polyester rope.

[0018] Furthermore, a protrusion is provided on the lower surface of the shell, and a slot is provided on the upper surface of the wrist distal radius fracture fixing splint, and the protrusion of the shell is installed in the slot of the wrist distal radius fracture fixing splint.

[0019] Furthermore, the single chip microcomputer is a STM32F103C6T6 single chip microcomputer.

[0020] The beneficial effects of the utility model are:

[0021] The utility model provides an automated tightening device for wrist bone fractures. On the basis of an existing fixed splint, the existing solution of using gauze for fixation and manual tightening is changed to a solution of using polyester rope for fixation and automated tightening. At the same time, the existing tightening solution of untying the gauze and then bundling and fixing is changed to a solution of automatically realizing tightening by pressing a button.

[0022] The utility model uses a machine to achieve automatic tightening, which greatly simplifies the operation process of tightening the fixed splint, reduces the complexity of the tightening operation, and can achieve the adjustment function by pressing a button. At the same time, by simplifying the steps required to tighten the fixed splint, the patient can tighten and relax the fixed splint anytime and anywhere without the help of others, thereby extending the patient's follow-up cycle and liberating the doctor's labor. In addition, the utility model uses an infrared sensor force measurement module to monitor the tightening force, so that the patient can always determine whether the fixed splint is in an abnormal state; through the visualization of the fixed state of the fixed splint and the simple operation of automatic tightening, the patient can tighten the fixed splint according to the state of the fixed splint at any place and at any time, and no longer needs the help of a doctor or family member. This change can greatly reduce the frequency of patient follow-up visits, and the fixed splint can be effectively fixed almost all the time, which can also shorten the patient's recovery time. BRIEF DESCRIPTION OF THE DRAWINGS

[0023] Figure 1 A schematic diagram of the structure of an automated tightening device for wrist fractures provided by the utility model;

[0024] Figure 2Schematic diagram for breadboard, OLED display, coin cell battery, microcontroller, push button and LED light installation;

[0025] Figure 3 It is a structural schematic diagram of the infrared sensor force measurement module;

[0026] Figure 4 Schematic diagram of the installation of the winding coil and the micro-motion DC motor.

[0027] In the figure: 1. Distal radius fracture fixation splint for wrist; 2. Breadboard; 3. OLED display; 4. Button battery; 5. Iron wire one; 6. Spring; 7. Light shield; 8. Infrared sensor; 9. Micro DC motor; 10. Housing; 11. Winding coil; 12. Single chip microcomputer; 13. Button; 14. LED light, 15. Iron wire two. DETAILED DESCRIPTION

[0028] The utility model is further described in detail below in conjunction with the accompanying drawings.

[0029] See also Figures 1 to 4 As shown, the utility model is an automated tightening device for wrist fractures, which mainly includes: a wrist distal radius fracture fixing splint 1, a breadboard 2, an OLED display screen 3, a button battery 4, an infrared sensor force measuring module, a micro-motion DC motor 9, a housing 10, a winding coil 11, a single-chip microcomputer 12, a button 13, an LED light 14 and a polyester rope.

[0030] A plurality of wire grooves 101 are arranged on the outer wall of the wrist distal radius fracture fixing splint 1 for installing polyester ropes, and a slot 102 is also arranged on the upper surface of one end of the wrist distal radius fracture fixing splint 1 for installing the shell 10.

[0031] The lower surface of the housing 10 is provided with a protrusion for connecting with the slot 102 on the wrist distal radius fracture fixing splint 1 to achieve the connection between the housing 10 and the wrist distal radius fracture fixing splint 1. The side of the housing 10 is provided with a square hole 103 for passing the polyester rope.

[0032] The breadboard 2 is fixedly mounted on the lower end of the housing 10 .

[0033] A fixed tightening device is composed of a breadboard 2, an OLED display screen 3, a button battery 4, an infrared sensor force measuring module, a micro-motion DC motor 9, a shell 10, a winding coil 11, a single-chip computer 12, a button 13, an LED lamp 14 and a polyester rope. The fixed tightening device is fixed to one end of a wrist distal radius fracture fixing splint 1, and the button battery 4, the infrared sensor force measuring module, the micro-motion DC motor 9, the winding coil 11 and the single-chip computer 12 are all installed inside the shell 10.

[0034] The OLED display screen 3 is fixedly mounted on the breadboard 2 outside the housing 10 .

[0035] The button battery 4 is fixedly mounted on the breadboard 2 inside the housing 10 .

[0036] like Figure 1 and Figure 3 As shown, the infrared sensor force measurement module is mainly composed of a wire 15, a spring 6, a block assembly and an infrared sensor 8; a hole is reserved at the corresponding position of the housing 10 for the wire 15 to pass through, and after the wire 15 passes through the hole, the end of the wire 15 remaining outside the housing 10 is bent so that the wire 15 can be attached to the outer surface of the housing 10 to play a fixing role. Subsequently, the tail of the wire 15 remaining inside the housing 10 is bent so that the shape of the wire 15 is similar to a fishhook shape, and one end of the spring 6 is hung on the fishhook shape of the tail of the wire 15 to achieve the connection between the spring 6 and the wire 15. The block assembly is mainly composed of a light shielding sheet 7 and a wire 2 15, and the wire 2 15 passes through the center of the light shielding sheet 7, and the light shielding sheet 7 should be located in the middle of the wire 2 15, and the two ends of the wire 2 15 are bent to make it into a fishhook shape. The other end of the spring 6 is hung on one end of the wire 15, and the other end of the wire 15 passes through the light shielding sheet 7 and is placed in the infrared sensor 8; the infrared sensor 8 is fixed on the breadboard 2 by bolts, and pulling the wire 15 will move the light shielding sheet 7 to the middle position of the infrared sensor 8 to shield the infrared sensor 8.

[0037] The micro-motion DC motor 9 is fixedly mounted on the breadboard 2 inside the housing 10 .

[0038] like Figure 4 As shown, the winding coil 11 is fixedly mounted on the output shaft of the micro-motion DC motor 9. One end of the polyester rope is fixed on the wrist distal radius fracture fixing splint 1. After the polyester rope is wound through the wire groove 101 of the wrist distal radius fracture fixing splint 1, it enters the fixing and tightening device through the square hole 103 on the side of the shell 10. The middle part of the polyester rope is hung on the iron wire 15, and then wound on the winding coil 11 and fixed by the winding coil 11. The position of the polyester rope is limited by the wire groove 101 on the wrist distal radius fracture fixing splint 1. The tightening principle of the polyester rope is to control the forward and reverse rotation of the micro-motion DC motor 9, and then control the rotation of the winding coil 11 sleeved on the output shaft of the micro-motion DC motor 9, so as to realize the tightening and loosening of the polyester rope, and then realize the tightening and loosening of the wrist distal radius fracture fixing splint 1.

[0039] The single chip computer 12 is fixedly mounted on the breadboard 2 inside the housing 10 .

[0040] The button 13 is fixedly mounted on the breadboard 2 outside the housing 10. The number of buttons 13 is generally four, and the four buttons 13 correspond to control the automatic tightening adjustment function, the manual tightening adjustment function, the manual loosening adjustment function, the stop and emergency stop of the manual tightening adjustment function and the manual loosening adjustment function respectively.

[0041] The LED lamp 14 is fixedly mounted on the breadboard 2 outside the housing 10. The number of the LED lamps 14 is generally two, and the two LED lamps 14 perform corresponding indication work (lighting up or extinguishing) according to the working state of the device.

[0042] Among them, the OLED display screen 3, the button battery 4, the infrared sensor 8, the micro-motion DC motor 9, the button 13, and the LED light 14 are all connected to the single-chip microcomputer 12 through cables, and the single-chip microcomputer 12 controls the operation of the above-mentioned units.

[0043] Among them, in order to realize the control of the forward and reverse rotation of the micro-motion DC motor 9 and the display device working state, the single-chip microcomputer 12 specifically selects the STM32F103C6T6 single-chip microcomputer for automatic control, uses the button battery 4 to power the single-chip microcomputer 12, and uses the OLED display screen 3 to display and prompt the working state of the device. The control of the working state of the device is realized by four buttons 13, and two LED lights 14 are used to prompt the detection state. The micro-motion DC motor 9 is connected to the single-chip microcomputer 12 through a cable, and the single-chip microcomputer 12 is used to control its forward and reverse rotation and stop.

[0044] The utility model is an automatic tightening device for wrist fractures, and its main functions are automatic tightening adjustment function, manual tightening adjustment function and manual loosening adjustment function. Figure 2 The four buttons 13 arranged from left to right correspond to the control of starting the automatic tightening adjustment function, starting the manual tightening adjustment function, starting the manual loosening adjustment function, stopping the manual tightening adjustment function and the manual loosening adjustment function, and emergency stop (the button 13 on the far right).

[0045] (1) The working principle of the automatic tightening adjustment function is as follows:

[0046] After pressing the corresponding button 13, the single-chip computer 12 analyzes the signal of the infrared sensor 8. If the signal is "unblocked", it is considered that the wrist distal radius fracture fixation splint 1 is in an under-fixed state, and the single-chip computer 12 immediately sends a forward signal to the micro-motion DC motor 9. At the same time, the single-chip computer 12 monitors the signal of the infrared sensor 8 in real time. When the signal is "blocked", it immediately sends a stop signal to the micro-motion DC motor 9. When the device is working in the automatic tightening and adjustment state, the OLED display screen 3 displays the current state and prompts that it is working, and both LED lights 14 are lit; when the automatic tightening and adjustment state ends, the OLED display screen 3 shows that the current state is non-functional operation, and both LED lights 14 are off.

[0047] (2) The working principle of the manual tightening adjustment function is as follows:

[0048] After pressing the corresponding button 13, the single-chip microcomputer 12 sends a forward signal to the micro-motion DC motor 9, and the current state is displayed through the OLED display screen 3, and the left LED light 14 is lit. When the rightmost button 13 is pressed, the single-chip microcomputer 12 sends a stop signal to the micro-motion DC motor 9, and the OLED display screen 3 shows that the current state is non-functional operation, and the left LED light 14 is off.

[0049] (3) The working principle of the manual relaxation adjustment function is as follows:

[0050] After pressing the corresponding button 13, the single-chip microcomputer 12 sends a reverse signal to the micro-motion DC motor 9, and the current state is displayed through the OLED display screen 3, and the right LED light 14 is lit. When the rightmost button 13 is pressed, the single-chip microcomputer 12 sends a stop signal to the micro-motion DC motor 9, and the OLED display screen 3 shows that the current state is non-functional operation, and the right LED light 14 is off.

[0051] When the button 13 is not pressed, the device is in a dormant state, the OLED display screen 3 has no display, and both LED lights 14 are off. When the OLED display screen 13 shows that the current state is non-functional, the rightmost button 13 is pressed again, and the device enters a dormant state.

[0052] While realizing the automatic tightening and adjusting function, the present invention also provides two manual adjustment functions, namely, manual tightening and manual loosening. In the case of adjusting the predetermined force value of automatic tightening, device installation and disassembly, the tightening and loosening states of the fixed tightening device can be adjusted unlimitedly through the manual tightening and manual loosening adjustment functions. At the same time, the manual adjustment function makes the device not completely dependent on the signal of the infrared sensor 8. When the infrared sensor 8 is abnormal, the wrist distal radius fracture fixing splint 1 can be manually adjusted to be safer.

[0053] The utility model is an automatic tightening device for wrist fractures. In the process of realizing the automatic tightening adjustment function, the manual tightening adjustment function and the manual loosening adjustment function, the force on the polyester rope is collected through the infrared sensor 8. The working principle is as follows: one end of the polyester rope is fixed on the wrist distal radius fracture fixing splint 1, and the polyester rope enters the fixing tightening device through the square hole 103 on the side of the shell 10 after being wound through the wire groove 101 of the wrist distal radius fracture fixing splint 1. The middle part of the polyester rope is hung on the iron wire 15, and then wound on the winding coil 11 and fixed by the winding coil 11. When the polyester rope is stressed, it will pull the light shielding sheet 7 through the iron wire 15, and then the traction spring 6 will deform and generate displacement; when the force reaches a predetermined value, the light shielding sheet 7 blocks the infrared sensor 8, and the infrared sensor 8 sends a signal to the single-chip computer 12, thereby completing the automatic tightening work. The predetermined value of the force on the polyester rope is adjusted by adjusting the relative position of the light shielding sheet 7 and the second iron wire 15. The specific adjustment method is that when the relative position of the light shielding sheet 7 and the second iron wire 15 is far away from the infrared sensor 8, the predetermined value increases, and when the relative position of the light shielding sheet 7 and the second iron wire 15 is close to the infrared sensor 8, the predetermined value decreases. By using the infrared sensor 8 and the spring 6 to measure the force on the polyester rope, the dedicated sensor for measuring the body force is replaced, and the size and weight of the device are reduced while the cost of the device is reduced.

[0054] In addition, when the doctor examines the distal radius fracture of the patient's wrist, the automatic tightening device for wrist fracture of the utility model needs to be disassembled, and the specific disassembly process is as follows:

[0055] The fixing and tightening device is connected to the slot 102 on the wrist distal radius fracture fixing splint 1 through the protrusion at the lower end of the shell 10. When the fixing and tightening device and the wrist distal radius fracture fixing splint 1 need to be separated, it is called the inspection state. The specific separation method is: open the back plate of the shell 10, take out the micro-motion DC motor 9, then remove the winding coil 11 thereon, and then return the micro-motion DC motor 9 to its original position; remove the polyester rope hanging on the iron wire 15, and completely separate the polyester rope from the fixing and tightening device through the square hole 103 on the side of the shell 10; then install the back plate of the shell 10, separate the wrist distal radius fracture fixing splint 1 and the fixing and tightening device, and wind the excess polyester rope back around the winding coil 11.

[0056] Considering that fractures require multiple CT scans and other related examinations to determine the recovery state of the bones, the utility model provides an inspection state. By removing the fixing and tightening device, the fixing and tightening device is separated from the wrist distal radius fracture fixing splint 1, and the related inspection can be completed without loosening the wrist distal radius fracture fixing splint 1, avoiding the situation where the fracture site is injured again due to unexpected situations during waiting for the inspection or the inspection process.

[0057] In the description of the present invention, it should be understood that the terms "center", "longitudinal", "lateral", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside", etc., indicating orientations or positional relationships, are based on the orientations or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present invention and simplifying the description, and do 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 the protection content of the present invention.

[0058] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of the utility model, rather than to limit it. Although the utility model has been described in detail with reference to the aforementioned embodiments, those skilled in the art should understand that they can still modify the technical solutions recorded in the aforementioned embodiments, or make equivalent replacements for some of the technical features therein, but these modifications or replacements do not make the essence of the corresponding technical solutions deviate from the spirit and scope of the technical solutions of the various embodiments of the utility model.

Claims

1. An automated tightening device for wrist fractures, comprising: The wrist distal radius fracture fixation splint is characterized by further comprising: A shell mounted on a wrist distal radius fracture fixation splint; A breadboard fixedly mounted on the lower end of the housing; OLED display, coin cell battery, push button, and LED light mounted on a breadboard and outside the enclosure; An infrared sensor force measuring module, a micro-motion DC motor and a single-chip microcomputer are installed on a breadboard and located inside the housing; the OLED display, button battery, button, LED light, infrared sensor force measuring module and micro-motion DC motor are all connected to the single-chip microcomputer; A winding coil mounted on the output shaft of a micro-motion DC motor; A plurality of wire grooves are provided on the outer wall of the wrist distal radius fracture fixation splint; A polyester rope, one end of which is fixed on a wrist distal radius fracture fixation splint, is wound through a wire groove of the wrist distal radius fracture fixation splint and then passes through an outer shell to enter the interior; a middle portion of the polyester rope is hung on an infrared sensor force measuring module, is then wound through a winding coil and then fixed by the winding coil.

2. The automated tightening device for wrist fractures according to claim 1, characterized in that: The infrared sensor force measuring module includes iron wire 1, a spring, a light shielding plate, iron wire 2 and an infrared sensor fixed on a breadboard; one end of the iron wire 1 is fixed on the housing, and the other end of the iron wire 1 is hung on one end of the spring; the other end of the spring is hung on one end of the iron wire 2, and the other end of the iron wire 2 passes through the light shielding plate and is placed in the infrared sensor; the middle part of the polyester rope is hung on the other end of the iron wire 2 after passing through the light shielding plate.

3. The automated tightening device for wrist fractures according to claim 1, characterized in that: A square hole is provided on the side of the shell for passing the polyester rope.

4. The automated tightening device for wrist fractures according to claim 1, characterized in that: A protrusion is provided on the lower surface of the shell, and a slot is provided on the upper surface of the wrist distal radius fracture fixing splint. The protrusion of the shell is installed in the slot of the wrist distal radius fracture fixing splint.

5. The automated tightening device for wrist fractures according to claim 1, characterized in that: The single chip microcomputer is selected as STM32F103C6T6 single chip microcomputer.

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