Postoperative ankle pump movement device for cardiovascular disease patient
The motor-driven equal-width cam and flat groove cam mechanism solves the problem of inadequate movement in the ankle pump exercise device, achieves standardization of ankle pump movement and effective muscle contraction, promotes blood circulation in the lower limbs, and prevents thrombosis.
Patent Information
- Application Number
- CN202421266277.4
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-06-05
- Publication Date
- 2025-10-24
- Estimated Expiration
- 2034-06-05
AI Technical Summary
The existing ankle pump exercise device has insufficient spring force during plantar flexion exercise, resulting in incomplete movement and insufficient muscle contraction, and is not ideal in preventing thrombosis.
The motor-driven equal-width cam and flat groove cam mechanism ensures that the pedal moves according to the designed trajectory through form locking. The speed change mechanism is combined to adjust the movement speed to ensure the standardization and effectiveness of the ankle pump movement.
It achieves the standardization of ankle pump movement and effective muscle contraction, promotes blood circulation in the lower limbs, and effectively prevents the formation of deep vein thrombosis in the lower limbs.
Smart Images
Figure CN223464232U_ABST
Abstract
Description
TECHNICAL FIELD
[0001] The utility model relates to the field of rehabilitation treatment especially relates to a cardiovascular disease patient postoperative ankle pump movement dress. BACKGROUND
[0002] The cardiovascular disease patient needs to be in bed for recuperation after operation, in order to prevent thrombosis caused by long time in bed, needs to carry out necessary exercise, because the patient is not completely recovered, often carries out bed exercise on the sickbed when exercising, and ankle pump movement can effectively prevent the formation of thrombosis, when plantar flexing, the triceps surae muscle contracts and shortens, tibialis anterior muscle relaxes and lengthens, when dorsiflexing, tibialis anterior muscle contracts and shortens, triceps surae muscle relaxes and lengthens, when muscle contraction, blood and lymph are extruded and return, when muscle relaxation, fresh blood is supplemented, through flexing and extending ankle, like pump, promotes lower limb blood circulation and lymph return, can effectively promote the blood circulation of whole lower limb, can effectively prevent the occurrence of deep vein thrombosis of lower limb.
[0003] The patent with publication number CN216455939U discloses an ankle joint pump device for promoting blood circulation, which can assist in ankle pump movement, but when plantar flexing, that is, when the pedal rotates to the cam side, it needs to rely on the elastic force of the spring to rotate back, so that when plantar flexing, when the elastic force of the spring is less than the resistance brought by the human body during movement, the pedal cannot rotate back and is separated from the cam, resulting in that the action is not in place, the muscle cannot effectively contract, and the effect of preventing thrombosis is not ideal. UTILITY MODEL CONTENT
[0004] In view of the above technical problems existing in the prior art, the present application provides an ankle pump movement device for cardiovascular disease patients after operation.
[0005] To achieve the above-mentioned purpose, the utility model adopts the following technical scheme:
[0006] An ankle pump movement device for cardiovascular disease patients after operation, comprising a rack, a motor, a movement conversion mechanism and a pedal mechanism connected to the rack, the motor, the movement conversion mechanism and the pedal mechanism are sequentially transmission connected;
[0007] The movement conversion mechanism comprises a cam and a driven part, the cam is fixedly connected with the lower end of the motor shaft through the shaft hole, the driven part is slidingly connected with the movement conversion mechanism support on the rack and can move linearly along the slide direction thereof, the cam and the driven part maintain the form locking contact mode of kinematic pair, and always keep contact by relying on the geometric shape of the cam and the driven part;
[0008] The pedal mechanism comprises a pedal, a fixing belt arranged on the front surface of the pedal, a first connecting rod penetrating through the bottom end of the pedal and hingedly connected with pedal supports on the frame at both ends, a dovetail groove arranged on the back surface of the pedal and perpendicular to the first connecting rod, a dovetail sliding block matched with the dovetail groove and slidably connected in the dovetail groove, and a second connecting rod penetrating through the outer part of the dovetail sliding block groove and connecting the two pedals, and the second connecting rod is hingedly connected with the motion conversion mechanism.
[0009] Preferably, the postoperative ankle pump exercise device for cardiovascular disease patients further comprises a speed change mechanism, the motor, the speed change mechanism, the motion conversion mechanism and the pedal mechanism are sequentially drivingly connected, the speed change mechanism comprises a first conical wheel fixedly connected with the motor shaft, a second conical wheel arranged upside down and parallel to the central shaft of the first conical wheel, a speed regulating wheel drivingly connected between the first conical wheel and the second conical wheel, a central shaft of the speed regulating wheel being parallel to the conical wheel profile line, a speed regulating rod fixedly connected with the central shaft of the speed regulating wheel, the speed regulating rod being slidably connected with the frame through a speed regulating rod support on the frame, and an upper end of a speed change mechanism shaft being fixedly connected with the second conical wheel, a middle part being connected with a speed change mechanism bearing seat on the frame, and a lower end being connected with a shaft hole of the cam in the motion conversion mechanism.
[0010] Preferably, the motion conversion mechanism is an equal-width cam mechanism, the cam is an equal-width cam, and the follower is a motion frame, the front and rear ends of the motion frame are rod pieces with a rectangular longitudinal section and are slidably connected with the frame through a motion conversion mechanism support on the frame, and the middle part of the motion frame is a rectangular frame and is connected with the equal-width cam through tangential connection at the inner sides of the front and rear ends.
[0011] Preferably, the motion conversion mechanism is a planar groove cam mechanism, the cam is a planar groove cam, and the follower is a motion rod, the motion rod is fixedly connected with a sliding block on the right side, and the sliding block is always slidably connected with the groove of the planar groove cam.
[0012] Preferably, the fixing belt on the pedal is provided with a magic tape, so that the fixing belt is convenient to wear.
[0013] Preferably, the pedal is provided with uniformly arranged convex structures for massaging muscles of the sole.
[0014] Preferably, the bearing of the speed change mechanism bearing seat on the frame is fastened by means of a bearing locking sleeve.
[0015] Preferably, the bearing of the speed change mechanism bearing seat on the frame is fixed by means of an elastic retainer.
[0016] The postoperative ankle pump exercise device for cardiovascular disease patients has the following beneficial effects:
[0017] 1. The equal-width cam keeps the distance between any two parallel tangent lines on its profile constant, ensuring that it is always in contact with the moving frame during movement. The groove on the planar groove cam cooperates with the slider on the follower, and the slider is always in contact with the groove during movement. The cam in the equal-width cam mechanism or the planar groove cam mechanism maintains the contact between the cam and the follower in the form of a positive lock, relying on the geometric shapes of the cam and the follower to maintain contact at all times, ensuring that the pedal swings according to the designed movement trajectory, thereby ensuring that the patient's ankle pump movement is standard, the muscles are effectively relaxed and contracted, and the expected antithrombotic effect is achieved.
[0018] 2. By setting the speed regulation mechanism, the patient can adjust the appropriate movement speed according to their own situation. BRIEF DESCRIPTION OF DRAWINGS
[0019] Figure 1 It is a schematic diagram of the three-dimensional structure of Example One.
[0020] Figure 2 It is a schematic diagram of the three-dimensional structure of the frame.
[0021] Figure 3 It is a schematic diagram of the three-dimensional structure of the speed regulation mechanism.
[0022] Figure 4 It is a schematic diagram of the three-dimensional structure of the equal-width cam mechanism.
[0023] Figure 5 It is a schematic diagram of the three-dimensional structure of the pedal mechanism.
[0024] Figure 6 It is a schematic diagram of the three-dimensional structure of the pedal mechanism. Figure 5
[0025] Figure 7 It is a schematic diagram of the three-dimensional structure of Example Two.
[0026] Figure 8 It is a schematic diagram of the three-dimensional structure of the planar groove cam mechanism in Example Two.
[0027] The drawings are only used for illustrative purposes and cannot be understood as limiting the patent; in order to better illustrate the embodiments, some components in the drawings may be omitted, enlarged or reduced, and do not represent the actual product size; for those skilled in the art, it is understandable that some well-known structures and their descriptions in the drawings may be omitted. DETAILED DESCRIPTION
[0028] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the embodiments described are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making creative efforts are within the scope of protection of the present invention.
[0029] Example 1:
[0030] like Figure 1 As shown, an ankle pump exercise device for patients with cardiovascular diseases after surgery according to an embodiment of the present invention includes a frame 1, to which a motor 2, a speed change mechanism 3, an equal-width cam mechanism 4 and a pedal mechanism 5 are connected, and the motor 2, the speed change mechanism 3, the equal-width cam mechanism 4 and the pedal mechanism 5 are sequentially connected in transmission.
[0031] like Figure 1 and Figure 3 As shown, the speed change mechanism 3 includes a first conical wheel 32, the first conical wheel 32 is fixedly connected to the motor shaft 31, the second conical wheel 33 is parallel to the central axis of the first conical wheel 32 and is relatively upside down, and a speed regulating wheel 34 is transmission-connected between the second conical wheel 33 and the first conical wheel 32, the central axis of the speed regulating wheel 34 is parallel to the conical surface contour line of the conical wheel, and the central axis of the speed regulating wheel 34 is fixedly connected to the speed regulating rod 35, and the speed regulating rod 35 is slidingly connected to the frame through the speed regulating rod support 12 on the frame, the upper end of the speed change mechanism shaft 36 is fixedly connected to the second conical wheel 33, the middle is connected to the speed change mechanism bearing seat 13 on the frame, and the lower end is connected to the equal-width cam mechanism 4.
[0032] like Figure 1 and Figure 3 As shown, during use of the speed change mechanism 3, the motor 2 drives its motor shaft 31 to rotate, the motor shaft 31 drives the first conical wheel 32 to rotate, and then the speed regulating wheel 34 drives the second conical wheel 33 to rotate; the swing speed of the pedal mechanism 5 is adjusted by pulling the relative position of the speed regulating lever 35 to change the transmission ratio.
[0033] like Figure 3 As shown, the equal-width cam mechanism 4 includes an equal-width cam 41 and a moving frame 42. The equal-width cam 41 is fixedly connected to the speed change mechanism shaft 36 of the speed change mechanism 3 through an axis hole 44. The front and rear ends of the moving frame 42 are rods with rectangular longitudinal sections and are slidably connected to the frame through the equal-width cam supports 14 on the frame. The middle part is a rectangular frame and the inner sides of the front and rear ends are in contact and tangentially connected with the equal-width cam 41.
[0034] The equal-width cam 41 is always in contact with the moving frame 42 because the distance between any two parallel tangent lines on the profile of the equal-width cam 41 is kept constant. The moving frame 42 moves linearly along the connecting line of the two equal-width cam supports 14 under the pushing force of the equal-width cam 41 because the two ends of the moving frame 42 are slidingly connected to the two equal-width cam supports 14. In use, the equal-width cam 41 rotates under the rotating driving force of the motor, and the moving frame 42 reciprocatingly moves linearly under the pushing force of the equal-width cam 41.
[0035] As shown in Figure 1 , Figure 5 and Figure 6 , the pedal mechanism 5 comprises a pedal 51, the front surface of which is provided with a fixing belt 53, a first connecting rod 54 passes through the bottom end of the pedal 51 and is hingedly connected to the pedal support 15 on the frame at both ends, the back surface of the pedal 51 is provided with a dovetail groove 56 which is perpendicular to the first connecting rod 54, a dovetail sliding block 55 which is connected to the dovetail groove 56 slidingly passes through a second connecting rod 52 at the outer part of the dovetail sliding block 55 and connects two pedals, and the second connecting rod 52 is hingedly connected to the connecting rod hole 43 in the equal-width cam mechanism 4.
[0036] In use, the rotating driving force of the motor 2 is transmitted to the speed-changing mechanism 3, the rotating driving force is then transmitted to the equal-width cam 41 through the speed-changing mechanism shaft 36 and drives the equal-width cam 41 to rotate, the moving frame 42 reciprocatingly moves linearly under the pushing force of the equal-width cam 41, the second connecting rod 52 reciprocatingly moves linearly with the moving frame 42 and drives the dovetail sliding block 55 outside the second connecting rod 52 to slide up and down in the dovetail groove 56, the pedal 51 is pushed by the dovetail sliding block 55 and swings around the first connecting rod 54, the patient puts his foot on the pedal 51 and fixes it with the fixing belt 53, the foot is dorsiflexed with the pedal 51 swinging to the right, at this time, the triceps surae muscle contracts and shortens, and the tibialis anterior muscle relaxes and lengthens; the foot is plantarflexed with the pedal 51 swinging to the left, the tibialis anterior muscle contracts and shortens, and the triceps surae muscle relaxes and lengthens; when the muscle contracts, the blood and lymph fluid are squeezed to return, and when the muscle relaxes, fresh blood is supplied. Through the flexion and extension of the ankle, the blood circulation and lymphatic return of the lower limbs are promoted like a pump, which can effectively promote the blood circulation of the whole lower limbs and effectively prevent the occurrence of deep vein thrombosis of the lower limbs.
[0037] Example Two:
[0038] As shown in Figure 6 , in this example two, the other structures are unchanged, and the difference lies in that the equal-width cam mechanism 4 in example one is replaced by a planar recess cam mechanism 4a, the planar recess cam mechanism 4a comprises a planar recess cam 41a, a sliding block 45a is fixedly connected to the right side of the moving rod 42a, and the sliding block 45a is always slidingly connected to the recess 46a.
[0039] In use, the variable speed mechanism shaft 36 drives the flat recess cam 41a to rotate around the shaft hole 44, the slider 45a is pushed by the recess 46a and finally drives the moving rod 42a connected therewith to perform reciprocating linear motion, and then the pedal mechanism 5 moves in the same way as in the first embodiment.
[0040] In the description of the present application, it should be understood that the terms "center", "longitudinal", "transverse", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer" and the like indicate the orientation or positional relationship based on the orientation or positional relationship shown in the drawings, and are only for the convenience of describing the present application and simplifying the description, and do not indicate or imply that the device or element referred to must have a particular orientation, be constructed and operated in a particular orientation, and therefore cannot be understood as a limitation on the scope of protection of the present application.
[0041] If the terms "first", "second" and the like are used herein to qualify a component, those skilled in the art should know that the use of "first", "second" is only for the convenience of describing the present application and simplifying the description, and the above terms have no special meaning unless otherwise stated.
[0042] Finally, it should be noted that: the above examples are only used to illustrate the technical solutions of the present application, and not to limit them; although the present application has been described in detail with reference to the foregoing embodiments, those skilled in the art should understand that: it can still modify the technical solutions recorded in the foregoing embodiments, or make equivalent replacement for part of the technical features, 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 embodiments of the present application.
Claims
1. A postoperative ankle pump exercise device for cardiovascular disease patients, comprising a frame, a motor and a pedal mechanism connected to the frame, characterized in that, Further comprising a motion conversion mechanism, the motor, the motion conversion mechanism and the pedal mechanism are sequentially connected in transmission; The motion conversion mechanism comprises a cam and a follower, the cam is fixedly connected with the lower end of the motor shaft through a shaft hole, the follower is slidingly connected with the motion conversion mechanism support on the rack and can move linearly along the sliding direction of the rack, and the cam and the follower maintain the mode of motion pair contact, that is, they always keep contact by relying on the special geometric shapes of the cam and the follower; The pedal mechanism comprises a pedal, a fixed belt is arranged on the front surface of the pedal, a first connecting rod passes through the bottom end of the pedal and is hingedly connected with the pedal support on the rack at both ends, a dovetail groove perpendicular to the first connecting rod is formed on the back surface of the pedal, a dovetail sliding block matched with the dovetail groove is slidingly connected in the dovetail groove, and a second connecting rod passes through the outer part of the dovetail sliding block groove and connects the two pedals, and the second connecting rod is hingedly connected with the motion conversion mechanism.
2. The postoperative ankle pump exercise device for cardiovascular disease patients according to claim 1, characterized in that, Further comprising a speed change mechanism, the motor, the speed change mechanism, the motion conversion mechanism and the pedal mechanism are sequentially connected in transmission, the speed change mechanism comprises a first conical wheel, the first conical wheel is fixedly connected with the motor shaft, a second conical wheel is arranged upside down in parallel with the central shaft of the first conical wheel, a speed regulating wheel is connected in transmission between the first conical wheel and the second conical wheel, the central shaft of the speed regulating wheel is parallel to the conical wheel profile line, a speed regulating rod is fixedly connected with the central shaft of the speed regulating wheel, the speed regulating rod is slidingly connected with the rack through a speed regulating rod support on the rack, the upper end of the speed change mechanism shaft is fixedly connected with the second conical wheel, the middle part is connected with a speed change mechanism bearing seat on the rack, and the lower end is connected with the shaft hole of the cam in the motion conversion mechanism.
3. The postoperative ankle pump exercise device for cardiovascular disease patients according to claim 1 or 2, characterized in that, The motion conversion mechanism is an equal-width cam mechanism, the cam is an equal-width cam, the follower is a motion frame, the front and rear ends of the motion frame are rod pieces with a rectangular longitudinal section and are slidingly connected with the rack through a motion conversion mechanism support on the rack, and the middle part is a rectangular frame and is connected with the equal-width cam in a tangent manner.
4. The postoperative ankle pump exercise device for cardiovascular disease patients according to claim 1 or 2, characterized in that, The motion conversion mechanism is a planar groove cam mechanism, the cam is a planar groove cam, and the follower is a motion rod, the right side of the motion rod is fixedly connected with a sliding block, and the sliding block is always slidingly connected with the groove of the planar groove cam.
5. The postoperative ankle pump exercise device for cardiovascular disease patients according to claim 1, characterized in that, The fixed belt on the pedal has a magic tape, which is convenient to wear.
6. The postoperative ankle pump exercise device for cardiovascular disease patients according to claim 1, wherein, The pedal has uniformly arranged convex structures for massaging the muscles of the soles.
7. The postoperative ankle pump exercise device for cardiovascular disease patients according to claim 2, characterized in that, The bearing of the speed change mechanism shaft and the speed change mechanism bearing seat on the rack is fastened by relying on a bearing locking sleeve.
8. The postoperative ankle pump exercise device for cardiovascular disease patients according to claim 2, characterized in that, The bearing of the speed change mechanism shaft and the speed change mechanism bearing seat on the rack is fixed by relying on an elastic retainer.