Auxiliary diabetic foot lower limb blood circulation device

Abstract

The invention discloses a diabetic foot lower limb blood circulation assisting device, and relates to the technical field of instruments for assisting lower limb blood circulation, in particular to a device with the classification number of A61F4 / 00. The device comprises a motion execution unit, and the motion execution unit comprises a universal joint chain which is integrally in a C shape; the driving unit comprises a gear motor A, and the output end of the gear motor A is in linkage with a universal joint A located at the head end of the universal joint chain; the driving unit is mounted in the packaging shell; a universal joint B at the tail end of the universal joint chain is connected with a rotating shaft of the packaging shell; the pressure adjusting unit comprises an elastic pull rope and an electric winding and unwinding mechanism used for tensioning or loosening the elastic pull rope. The elastic pull rope penetrates through all the universal joints and the cross shaft and is connected with the electric winding and unwinding mechanism; and a through hole for the elastic pull rope to pass through is formed in the middle of the cross shaft. The device can be wound on the lower limbs of a patient to conduct exercise pressurization and decompression on the lower limbs and forcibly promote blood circulation of the lower limbs, and is light in structure and convenient to use.

Description

Technical Field

[0001] The present invention relates to the technical field of devices for assisting blood circulation in lower limbs, and in particular to a device for assisting blood circulation in lower limbs of diabetic feet, and may specifically involve the classification number A61F4 / 00. Background Art

[0002] Lower limb vascular disease caused by long-term diabetes is the main cause of diabetic foot, and it has the characteristics of early onset, rapid spread, and high prevalence. As the duration of diabetes increases, a series of blood functions of patients gradually weaken, and they cannot provide enough oxygen and essential nutrients to human tissues. The blood cannot normally transport metabolic waste produced by the human body, leading to blood circulation disorders and the occurrence of diabetic foot complications. Therefore, promoting blood circulation in the lower limbs is crucial for patients with diabetic foot.

[0003] The Beagle exercise method is an exercise method that promotes blood circulation in the lower limbs. It can dilate blood vessels and increase blood flow in the lower limbs. It can effectively promote the recovery of diabetic lower limb vascular lesions and reduce the recurrence of diabetic foot. The specific steps are: (1) The person lies on the bed with both legs raised at an angle of 60 to 90 degrees to the bed surface. The legs should remain raised until the toes become pale or ischemic, and the position should last for 20 to 30 seconds. The legs should then be lowered. (2) Place your feet vertically under the edge of the bed until the soles of your feet become warm or engorged with blood for 2 to 5 minutes. Then move your ankles up and down and left and right for about 3 minutes to make your feet rosy.

[0004] Although the Beagle exercise method promotes blood circulation in the lower limbs by changing the height of the lower limbs relative to the human body, the exercise consumes the patient's physical energy or requires assistance from an assistant. Currently, there is a need for a device to assist blood circulation in the lower limbs of diabetic foot patients, reducing the patient's exercise consumption and dependence on assistants. Summary of the invention

[0005] The technical problem to be solved by the present invention is to provide a device for assisting blood circulation in the lower limbs of diabetic foot in response to the above-mentioned technical deficiencies. The device can be wrapped around the patient's lower limbs to perform exercise pressurization and decompression on the lower limbs, thereby forcibly promoting blood circulation in the lower limbs. The device has a light structure and is easy to use.

[0006] The technical solution adopted by the present invention is to provide a device for assisting blood circulation in the lower limbs of diabetic foot, comprising: A motion execution unit, the motion execution unit comprises a universal joint chain which is in a C-shape as a whole; the universal joint chain comprises a plurality of universal joints which are connected end to end in sequence through a cross shaft, the rotation connection portion between the universal joint and the shaft end of the cross shaft is a long strip through groove; the shaft end of the cross shaft has a movable stroke in the long strip through groove, and the movable stroke is used for adjusting the length of the universal joint chain; A drive unit, the drive unit comprising an A reduction motor, the output end of the A reduction motor being linked to an A universal joint located at the head end of the universal joint chain; A packaging shell, wherein the driving unit is installed in the packaging shell; the universal joint B at the tail end of the universal joint chain is connected to the rotating shaft of the packaging shell; A pressure adjustment unit, which is installed in the packaging shell and includes an elastic pull rope and an electric retractable mechanism for tightening or loosening the elastic pull rope; the elastic pull rope passes through all universal joints and the cross shaft and is connected to the electric retractable mechanism; a through hole is opened in the middle of the cross shaft for the elastic pull rope to pass through; A control unit, the control unit is electrically connected to the A reduction motor and the electric retractable mechanism; the control logic of the control unit includes: S1, when the A reduction motor is in forward rotation, the electric retractable mechanism is tightened; when the A reduction motor is in reverse rotation, the electric retractable mechanism is loosened; S2, when the A reduction motor is in forward rotation, the electric retractable mechanism is loosened; when the A reduction motor is in reverse rotation, the electric retractable mechanism is tightened.

[0007] Preferably, a guide limit pair is provided between the elongated through slot and the shaft end of the cross shaft; the guide limit pair is used to keep the shaft end of the cross shaft sliding in the length direction of the elongated through slot.

[0008] Preferably, the motion execution unit further comprises a flexible skin; the flexible skin is sleeved on the outside of the universal joint chain; the flexible skin is a bellows or spiral tubular structure.

[0009] Preferably, the electric retractable mechanism comprises a B reduction motor, an output end of which is connected to a reel; and the elastic pull rope is connected to the reel.

[0010] Preferably, balls are evenly mounted on the inner side of the packaging shell.

[0011] Preferably, a battery for supplying power to the drive unit, the electric retractable mechanism and the control unit is installed in the packaging shell.

[0012] Compared with the Beagle exercise method, the universal joint chain used in the present invention can be wrapped around the patient's lower limbs, and can rotate on the surface of the lower limbs under the drive of the driving unit; the pressure adjustment unit can adjust the pressure applied to the lower limbs after the universal joint chain is wrapped around the patient's lower limbs; the control logic S1 of the control unit can realize: when the universal joint chain rolls along the foot end of the lower limb with pressure, and then rolls away from the foot end without pressure, such a cycle pushes blood to the foot end; the control logic S2 of the control unit can realize: when the universal joint chain rolls along the foot end of the lower limb without pressure, and then rolls away from the foot end with pressure, such a cycle decompresses and pushes blood from the foot end. The actions controlled by S1 and S2 are performed alternately, and the present invention realizes the auxiliary promotion effect on the blood circulation of the lower limbs.

[0013] Other technical effects of the present invention will be clearly explained in the development of some embodiments. BRIEF DESCRIPTION OF THE DRAWINGS

[0014] Figure 1 It is a structural schematic diagram of the present invention; Figure 2 for Figure 1 A schematic cross-sectional view of the packaging shell portion after the flexible skin is removed; Figure 3 A partial enlarged schematic diagram of the universal joint chain.

[0015] In the figure, 1. universal joint chain; 2. cross shaft; 3. universal joint; 4. long strip through groove; 5. reduction motor A; 6. universal joint A; 7. packaging shell; 8. universal joint B; 9. elastic pull rope; 10. through hole; 11. guide limit pair; 12. flexible skin; 13. reduction motor B; 14. reel; 15. ball bearing; 16. battery; 17. charging port. DETAILED DESCRIPTION

[0016] The present invention will be further described in detail below in conjunction with the accompanying drawings and specific embodiments.

[0017] like Figure 1 , Figure 2 , Figure 3 As shown, a device for assisting blood circulation in lower limbs of diabetic foot comprises: A motion execution unit, the motion execution unit comprises a universal joint chain 1 which is in a C-shape as a whole; the universal joint chain 1 comprises a plurality of universal joints 3 which are connected end to end in sequence through a cross shaft 2, the rotation connection portion between the universal joint 3 and the shaft end of the cross shaft 2 is a long strip through groove 4; the shaft end of the cross shaft 2 has a movable stroke in the long strip through groove 4, and the movable stroke is used for adjusting the length of the universal joint chain 1; A driving unit, the driving unit comprising an A reduction motor 5, the output end of the A reduction motor 5 being linked to an A universal joint 6 located at the head end of the universal joint chain 1; The encapsulating shell 7, the driving unit is installed in the encapsulating shell 7; the universal joint 8 at the tail end of the universal joint chain 1 is connected to the rotating shaft of the encapsulating shell 7; A pressure adjustment unit, which is installed in the packaging shell 7 and includes an elastic pull rope 9 and an electric retractable mechanism for tightening or loosening the elastic pull rope 9; the elastic pull rope 9 passes through all the universal joints 3 and the cross shaft 2 and is connected to the electric retractable mechanism; a through hole 10 for the elastic pull rope 9 to pass through is opened in the middle of the cross shaft 2; A control unit, the control unit is electrically connected to the A reduction motor 5 and the electric retractable mechanism; the control logic of the control unit includes: S1, when the A reduction motor 5 is in forward rotation, the electric retractable mechanism is tightened; when the A reduction motor 5 is in reverse rotation, the electric retractable mechanism is loosened; S2, when the A reduction motor 5 is in forward rotation, the electric retractable mechanism is loosened; when the A reduction motor 5 is in reverse rotation, the electric retractable mechanism is tightened.

[0018] The universal joint 3 in the present invention is consistent with the principle of the transmission universal joint in the prior art. Unlike the soft shaft transmission, it has the characteristics of instant transmission, and there will be no phase difference between the head and the tail. Therefore, when the universal joint chain 1 rotates around the lower limb, it will not tilt relative to the limb axis. Unlike the existing transmission universal joint structure, the connection structure between the universal joint 3 and the cross shaft 2 in the present invention is not an axial hole, but a long strip through groove 4; the shaft end of the cross shaft 2 can rotate and slide in the long strip through groove 4, so the universal joint chain 1 can transmit instantly and adapt to the changes in the circumference of the limb at different positions when it is wrapped around the limb.

[0019] Regarding the control logic of the control unit: S1, when the A reduction motor 5 is in forward transmission, the electric retractable mechanism is tightened; when the A reduction motor 5 is in reverse transmission, the electric retractable mechanism is relaxed; the function of the control logic S1 is to force blood to be pushed to the foot end, so the forward transmission of the A reduction motor 5 corresponds to the universal joint chain 1 that is wound around the limb and moves toward the foot end. Similarly, the function of the control logic S2 is to force the decompression of the foot end, so the forward transmission of the A reduction motor 5 corresponds to the universal joint chain 1 that is wound around the limb and moves away from the foot end. When the S1 action and the S2 action are alternately operated at a certain number of times and frequencies, forced blood circulation to the foot end is achieved.

[0020] To further optimize this embodiment, a guide limiter 11 is provided between the long strip through slot 4 and the axial end of the cross shaft 2 ; the guide limiter 11 is used to keep the axial end of the cross shaft 2 sliding in the length direction of the long strip through slot 4 .

[0021] The guide limit pair 11 can keep the universal joint chain 1 aligned in the same annular direction to prevent the cross shaft 2 from being forced out or tilting in the long strip through groove 4.

[0022] To further optimize this embodiment, the motion execution unit further includes a flexible skin 12; the flexible skin 12 is sleeved on the outside of the universal joint chain 1; the flexible skin 12 is a bellows or spiral tube structure.

[0023] The flexible skin 12 can improve the comfort of the patient when using the device, and prevent the gap or uneven position of the universal joint chain 1 from pinching or hurting the skin. The corrugated structure or spiral tubular structure of the flexible skin 12 can adapt to the length change of the universal joint chain 1.

[0024] To further optimize this embodiment, the electric retractable mechanism includes a B reduction motor 13 , and an output end of the B reduction motor 13 is connected to a reel 14 ; the elastic pull rope 9 is connected to the reel 14 .

[0025] The electric retractable mechanism can also be implemented in a non-reel winding manner, such as by an electric push-pull rod, an electric lead screw slider, etc., which are omitted in the drawings.

[0026] To further optimize this embodiment, balls 15 are evenly mounted on the inner side of the packaging shell 7 .

[0027] The ball 15 can reduce the sliding friction between the packaging shell 7 and the skin of the limb, reduce the energy consumption of the present invention, and improve comfort.

[0028] To further optimize this embodiment, a battery 16 for supplying power to the drive unit, the electric retractable mechanism and the control unit is installed in the encapsulation shell 7. The battery 16 can make the present invention free from the line restriction of the external power supply, and is more convenient to use.

[0029] It should be noted that all directional indications in the embodiments of the present invention (such as up, down, left, right, front, back, etc.) are only used to explain the relative position relationship, movement status, etc. between the components under a certain specific posture (as shown in the accompanying drawings). If the specific posture changes, the directional indication will also change accordingly.

[0030] In addition, the descriptions of "first", "second", etc. in the present invention are only used for descriptive purposes and cannot be understood as indicating or implying their relative importance or implicitly indicating the number of the indicated technical features. Therefore, the features defined as "first" and "second" may explicitly or implicitly include at least one of the features. In addition, the technical solutions between the various embodiments can be combined with each other, but they must be based on the ability of ordinary technicians in the field to implement them. When the combination of technical solutions is contradictory or cannot be implemented, it should be deemed that such a combination of technical solutions does not exist and is not within the scope of protection required by the present invention.

Claims

1. A device for assisting blood circulation in the lower limbs of diabetic foot, characterized in that include: A motion execution unit, the motion execution unit comprises a universal joint chain which is in a C-shape as a whole; the universal joint chain comprises a plurality of universal joints which are connected end to end in sequence through a cross shaft, the rotation connection portion between the universal joint and the shaft end of the cross shaft is a long strip through groove; the shaft end of the cross shaft has a movable stroke in the long strip through groove, and the movable stroke is used for adjusting the length of the universal joint chain; A drive unit, the drive unit comprising an A reduction motor, the output end of the A reduction motor being linked to an A universal joint located at the head end of the universal joint chain; A packaging shell, wherein the driving unit is installed in the packaging shell; the universal joint B at the tail end of the universal joint chain is connected to the rotating shaft of the packaging shell; A pressure adjustment unit, which is installed in the packaging shell and includes an elastic pull rope and an electric retractable mechanism for tightening or loosening the elastic pull rope; the elastic pull rope passes through all universal joints and the cross shaft and is connected to the electric retractable mechanism; a through hole is opened in the middle of the cross shaft for the elastic pull rope to pass through; A control unit, the control unit is electrically connected to the A reduction motor and the electric retractable mechanism; the control logic of the control unit includes: S1, when the A reduction motor is in forward rotation, the electric retractable mechanism is tightened; when the A reduction motor is in reverse rotation, the electric retractable mechanism is loosened; S2, when the A reduction motor is in forward rotation, the electric retractable mechanism is loosened; when the A reduction motor is in reverse rotation, the electric retractable mechanism is tightened.

2. The device for assisting lower limb blood circulation in diabetic foot according to claim 1, characterized in that: A guide limit pair is provided between the long strip through slot and the shaft end of the cross shaft; the guide limit pair is used to keep the shaft end of the cross shaft sliding in the length direction of the long strip through slot.

3. The device for assisting lower limb blood circulation in diabetic foot according to claim 1, characterized in that: The motion execution unit also includes a flexible skin; the flexible skin is sleeved on the outside of the universal joint chain; the flexible skin is a bellows or spiral tube structure.

4. The device for assisting lower limb blood circulation in diabetic foot according to claim 1, characterized in that: The electric retractable mechanism comprises a B reduction motor, the output end of which is connected to a reel; and the elastic pull rope is connected to the reel.

5. The device for assisting lower limb blood circulation in diabetic foot according to claim 1, characterized in that: The inner side of the packaging shell is evenly equipped with balls.

6. The device for assisting lower limb blood circulation in diabetic foot according to claim 1, characterized in that: A storage battery for supplying power to the driving unit, the electric retractable mechanism and the control unit is installed in the packaging shell.

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