Critical care lower extremity massage device

Abstract

The present application relates to massage device technical field, specifically for a kind of critical nursing lower limbs massage device, including base, fixedly installed in the seat of the rear upper portion of base, installation in the support unit of base front and located in the seat front, symmetrically arranged in the left and right sides of base and located on the gripping mechanism of support unit, the gripping mechanism is used to the gripping massage of patient lower limbs;The present application is cooperated with drive unit by gripping mechanism, realize the all-round, multilevel massage of patient lower limbs, specifically, gripping mechanism uses the gripping component of staggered distribution of upper and lower two layers, cooperation telescopic second lug, can simulate the gripping, point press action of hand, both can the superficial relaxation of lower limb muscle, also can realize deep massage, promote muscle contraction and relaxation, avoid muscle fiber atrophy.

Description

Technical Field

[0001] This invention relates to the field of massage device technology, specifically a lower limb massage device for critical care. Background Technology

[0002] Critically ill patients often experience severe limitations in lower limb movement due to prolonged bed rest, which can easily lead to complications such as muscle atrophy, poor blood circulation, and deep vein thrombosis in the lower limbs. In the process of intensive care, regular and effective massage of the patient's lower limbs is an important means to promote recovery and prevent complications.

[0003] Most existing lower limb massage devices use mechanical grasping or roller pressing structures, but they have the following shortcomings: the massage protrusions are fixed and not easy to adjust, and cannot meet the personalized needs of different patients for massage intensity. The massage area is mainly concentrated on the sides of the legs, and the bottom of the legs is difficult to be effectively massaged. Therefore, a lower limb massage device for critical care is needed to improve the above problems. Summary of the Invention

[0004] To address the technical problems of inconvenient adjustment of massage bumps and ineffective massage of the bottom of the legs, this invention provides a lower limb massage device for critical care, thereby solving the aforementioned problems.

[0005] To achieve the above objectives, the present invention provides the following technical solution:

[0006] A lower limb massage device for critical care includes a base, a seat fixedly installed above the rear of the base, a support unit installed at the front of the base and located in front of the seat, and a grasping mechanism symmetrically arranged on the left and right sides of the base and located on the support unit. The grasping mechanism is used to grasp and massage the patient's lower limbs.

[0007] A drive unit is mounted on the support unit and is connected to the gripping mechanism for transmission. The drive unit is used to drive the gripping mechanism to perform periodic opening and closing movements.

[0008] A bracket fixed to a base for supporting the patient's lower limbs; there are two brackets.

[0009] An auxiliary pressing unit is installed on the bracket. The auxiliary pressing unit works with the grasping mechanism to intermittently press the bottom surface of the patient's lower limb.

[0010] As a preferred embodiment of the present invention, the gripping mechanism includes two layers of gripping components that are staggered. Each gripping component includes a connecting arm. A first fixing ring is fixedly connected to the bottom of the connecting arm. A connecting buffer is provided at the bottom of the first fixing ring. A gripping ring is connected to the bottom of the first fixing ring through the connecting buffer. A driving arm is rotatably connected to the outer wall of the connecting arm. The other end of the connecting arm rotates on the fixed end of the driving unit. The other end of the driving arm is fixedly connected to the output end of the driving unit.

[0011] As a preferred embodiment of the present invention, the connecting buffer is a compression spring or a rubber column, one end of which is fixedly connected to the outer arc surface of the first fixed ring, and the other end is fixedly connected to the inner arc surface of the gripping ring. The gripping ring is in the shape of an arc semi-circle, and the inner surface of the gripping ring is provided with a plurality of fixed first protrusions and a plurality of retractable second protrusions.

[0012] As a preferred embodiment of the present invention, the gripping ring has an arc-shaped inner cavity, and the bottom surface of the inner cavity has multiple openings, with a second protrusion slidably disposed in each opening.

[0013] An airbag is fixedly installed inside the cavity. The outer wall of the airbag is in contact with or fixedly connected to the inner end of the second protrusion. An air injection tube with one end extending out of the cavity is fixedly connected to the airbag.

[0014] When the airbag inflates, it pushes the second protrusion outward from the opening, causing the second protrusion to protrude from the surface of the first protrusion.

[0015] When the airbag deflates and contracts, the second protrusion retracts to be flush with the surface of the first protrusion.

[0016] As a preferred embodiment of the present invention, L-shaped plates are fixedly connected to both ends of the top of the second protrusion, and a fixing rod is slidably fitted on the L-shaped plate. The two ends of the fixing rod are fixed inside the inner cavity, and a first spring is sleeved on the fixing rod. One end of the first spring abuts against the horizontal section of the L-shaped plate, and the other end of the first spring abuts against the inner side wall of the gripping ring.

[0017] As a preferred embodiment of the present invention, the driving unit includes a C-shaped frame and a rectangular frame. The top of the C-shaped frame is fixedly supported by the C-shaped frame, and a connecting arm is rotatably connected to the side wall of the C-shaped frame. Sliding grooves are provided on the inner walls of both sides of the C-shaped frame.

[0018] A T-shaped plate is fixedly connected to one bottom end of the C-shaped frame, and a moving groove extending horizontally is opened on the top of the T-shaped plate, with a moving block slidably connected in the moving groove.

[0019] The rectangular frame has racks fixed on both sides inside, with the tooth surfaces of the two racks facing each other. A connecting rod is fixedly connected to one end of the rectangular frame, and the connecting rod is fixedly connected to the top surface of the moving block.

[0020] A drive motor is fixedly connected to the bottom of the T-shaped plate. The output shaft of the drive motor passes upward through the T-shaped plate, and a sector gear is fixedly connected to the end of the output shaft. The sector gear is located inside the rectangular frame, and the tooth arc of the sector gear can alternately mesh with two racks.

[0021] The other end of the connecting rod is fixedly connected to a push rod, both ends of the push rod are slidably connected to the slide groove, and the top and bottom of the push rod are rotatably connected to a drive arm.

[0022] As a preferred embodiment of the present invention, the support unit includes an electric lead screw linear module and a support frame. The electric lead screw linear module is fixedly installed on the upper surface of the base along the length direction of the base. The bottom of the support frame is fixedly connected to the slide of the electric lead screw linear module, and the upper end of the support frame is fixedly connected to the C-shaped frame.

[0023] As a preferred embodiment of the present invention, the bracket is provided with a plurality of hollow holes equidistantly through it along its length, and one end of the auxiliary pressing unit passes through the hollow holes and can extend upwards out of the upper surface of the bracket.

[0024] As a preferred embodiment of the present invention, the auxiliary pressing unit includes a vertical rod, and there are several vertical rods. The vertical rods are fitted with the hollow holes with a clearance. A base plate is fixedly connected to the bottom end of the vertical rod. A second spring is sleeved on the vertical rod. One end of the second spring is fixed to the bracket, and the other end of the second spring is fixed to the upper surface of the base plate. A connecting plate is fixedly connected between two adjacent base plates.

[0025] As a preferred embodiment of the present invention, the upper and lower gripping rings are staggered on the horizontal projection along the length of the lower limb, the gripping position of the upper gripping ring corresponds to the gap position between the two gripping rings of the lower layer, and the inner surface of the gripping ring is also covered with a flexible pad layer, and the first protrusion and the second protrusion are both made of elastic rubber.

[0026] Compared with existing technologies, this device achieves comprehensive and multi-layered massage of the patient's lower limbs through the coordinated operation of the grasping mechanism and the drive unit. Specifically, the grasping mechanism adopts two layers of grasping components that are staggered, and with the help of a retractable second protrusion, it can simulate the grasping and pressing actions of a human hand. It can both relax the muscles of the lower limbs superficially and perform deep massage, promote muscle contraction and relaxation, and prevent muscle fiber atrophy.

[0027] Compared with existing technologies, this device achieves flexible adjustment of massage intensity by setting an airbag-driven retractable second protrusion inside the gripping ring, in conjunction with the reset mechanism of the first spring. That is, by controlling the inflation of the airbag through an external air source, the protrusion height of the second protrusion relative to the first protrusion can be adjusted. The more air is inflated, the higher the second protrusion protrudes, and the stronger the massage intensity. After deflation, the first spring automatically pulls the second protrusion back. This adjustment method can adapt to the massage needs of different patients.

[0028] Compared with existing technologies, this device uses an auxiliary pressing unit to intermittently press the bottom surface of the lower limbs, complementing the grasping action. When the lower grasping ring closes and grasps both sides of the leg, the upright pushes the bottom surface of the leg upward, forming a compound massage mode of grasping on both sides and pressing on the bottom surface. The auxiliary pressing unit uses the opening and closing motion of the grasping mechanism itself as the driving force, and achieves linkage through the contact between the upright and the bottom of the lower grasping ring. No additional motor or pneumatic components are required, resulting in a compact structure and high reliability. Attached Figure Description

[0029] Figure 1 This is a schematic diagram of the overall structure of the present invention;

[0030] Figure 2 This is a schematic diagram of the connection structure between the gripping mechanism and the driving unit of the present invention;

[0031] Figure 3 This is a schematic diagram of the internal structure of the drive unit of the present invention;

[0032] Figure 4 For the present invention Figure 3 A magnified view of the structure at point A in the middle;

[0033] Figure 5 This is a schematic diagram of the drive unit structure of the present invention;

[0034] Figure 6 This is a schematic diagram of the installation structure of the T-shaped plate of the present invention;

[0035] Figure 7 This is a schematic diagram of the gripping mechanism of the present invention;

[0036] Figure 8 This is a schematic diagram of the unfolded structure of the gripping mechanism of the present invention;

[0037] Figure 9 This is a schematic diagram of the structure of the second protrusion of the present invention;

[0038] Figure 10 This is a schematic diagram of the cooperative structure of the gripping mechanism and the auxiliary pressing unit of the present invention;

[0039] Figure 11 This is a schematic diagram of the auxiliary pressing unit of the present invention.

[0040] In the diagram: 1. Base; 2. Support unit; 21. Electric lead screw linear module; 22. Support frame; 3. Gripping mechanism; 31. Connecting arm; 32. First fixing ring; 33. Connecting buffer; 34. Gripping ring; 341. Inner cavity; 342. Opening; 343. Airbag; 344. Inflation pipe; 35. Drive arm; 36. First protrusion; 37. Second protrusion; 371. L-shaped plate; 372. Fixing rod; 373. 1. First spring; 4. Drive unit; 41. C-shaped frame; 411. Slide groove; 42. T-shaped plate; 421. Moving groove; 43. Moving block; 44. Rectangular frame; 45. Rack; 46. Connecting rod; 47. Push rod; 48. Drive motor; 49. Sector gear; 5. Bracket; 51. Hollow hole; 6. Auxiliary pressing unit; 61. Upright pole; 62. Second spring; 63. Base plate; 64. Connecting plate; 7. Seat. Detailed Implementation

[0041] The technical solutions of the present invention will be clearly and completely described below with reference to the accompanying drawings of the embodiments of the present invention. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. All other embodiments obtained by those skilled in the art based on the embodiments of the present invention without creative effort are within the scope of protection of the present invention.

[0042] Example: Please refer to Figure 1-11 The illustrated lower limb massage device for critical care includes a base 1, a seat 7 fixedly installed above the rear of the base 1, a support unit 2 installed at the front of the base 1 and located in front of the seat 7, a grasping mechanism 3 symmetrically arranged on the left and right sides of the base 1 and located on the support unit 2, the grasping mechanism 3 being used to grasp and massage the patient's lower limbs, a drive unit 4 installed on the support unit 2 and connected to the grasping mechanism 3, the drive unit 4 being used to drive the grasping mechanism 3 to perform periodic opening and closing movements, and an auxiliary pressing unit 6 installed on a bracket 5, the auxiliary pressing unit 6 cooperating with the grasping mechanism 3 to intermittently press the bottom surface of the patient's lower limbs.

[0043] In this embodiment, such as Figure 1 As shown, the base 1 adopts a rectangular flat plate structure, and anti-slip rubber pads are fixed at the four corners of the bottom to firmly adhere to the ground, preventing the device from shifting during the massage process and ensuring patient safety. The base 1 is placed horizontally on the ground, and a wiring channel is reserved inside to store the connection wires of various electrical components, avoiding messy wiring that may affect nursing operations.

[0044] The seat 7 is fixedly installed on the upper rear of the base 1 using high-strength stainless steel bolts. The bolts are embedded in the pre-set threaded holes inside the base, ensuring a secure connection and facilitating disassembly and maintenance. The seat 7 is ergonomically designed, including a seat cushion, backrest, and armrests on both sides. The seat cushion is made of medical-grade memory foam, approximately 5cm thick, and covered with a removable and washable waterproof and antibacterial fabric for easy daily cleaning and disinfection. The backrest is approximately 80cm high and can be adjusted from 0-120° using a knob on the side to accommodate different resting positions such as sitting and semi-reclining, meeting the needs of critically ill patients who cannot adjust their position independently. The specific structure of the seat 7 is not shown in the figure, as it is a technology well-known to those skilled in the art and will not be described in detail here.

[0045] In this embodiment, such as Figure 1 , Figure 2 , Figure 3 , Figure 7 , Figure 8 , Figure 9 and Figure 10 As shown, the grasping mechanism 3 is symmetrically arranged on the left and right sides of the base 1, corresponding to the patient's left and right legs respectively. Each grasping mechanism 3 is connected to the drive unit 4. The grasping mechanism 3 adopts a two-layer and staggered grasping component design. Each layer is equipped with 3-4 grasping components, which are evenly distributed along the length of the lower limb to ensure that the massage covers the entire lower limb.

[0046] The gripping assembly includes a connecting arm 31, a first fixing ring 32, a connecting buffer 33, a gripping ring 34, and a driving arm 35. The connecting arm 31 is made of lightweight aluminum alloy and is about 20cm long. One end is rotatably connected to the side wall of the C-shaped frame 41 of the driving unit 4 via a rotating shaft, and can rotate flexibly around the rotating shaft. The bottom of the connecting arm 31 is fixedly connected to the first fixing ring 32 by welding. The first fixing ring 32 has a semi-arc structure, and the curvature is adapted to the contour of the human lower limb.

[0047] The bottom of the first fixing ring 32 is provided with a connecting buffer 33, which is a compression spring or a rubber column (preferably a medical-grade silicone rubber column, which has moderate elasticity and is non-irritating). One end of the connecting buffer 33 is fixed to the outer arc surface of the first fixing ring 32 by adhesive bonding, and the other end is fixedly connected to the inner arc surface of the grasping ring 34. There are 3-4 of them, which are evenly distributed between the first fixing ring 32 and the grasping ring 34. They can buffer the impact force during the grasping process and avoid excessive force from damaging the skin and muscles of the patient's lower limbs.

[0048] The pinching ring 34 is an arc-shaped semi-circle made of medical-grade soft silicone material with a thickness of about 2cm. The inner surface is covered with a flexible pad layer (made of breathable and skin-friendly fabric) with a thickness of about 0.5cm to improve patient comfort. The inner surface of the pinching ring 34 is provided with multiple fixed first protrusions 36 and multiple retractable second protrusions 37. The first protrusions 36 are hemispherical with a diameter of about 1cm and are evenly distributed on the inner side of the pinching ring to achieve basic point massage. The second protrusions 37 have the same structure as the first protrusions and can achieve retraction, further enhancing the massage layering.

[0049] The gripping ring 34 has an arc-shaped inner cavity 341, and its bottom surface has multiple openings 342 that fit the second protrusion 37. Each opening 342 has a second protrusion 37 that slides within it. The edges of the openings are rounded to prevent scratching the second protrusion 37. An airbag 343 is fixedly installed inside the inner cavity 341. The airbag 343 is made of medical-grade elastic rubber and fits perfectly with the contour of the inner cavity 341. The outer wall of the airbag 343 contacts the inner end of the second protrusion 37 (or is fixed by adhesive). An air injection tube 344 is fixedly connected to the airbag 343, with one end extending out of the inner cavity 341. The other end of the air injection tube 344 has a sealing cap. A valve core is fixedly installed inside the air injection tube 344. The valve core can effectively prevent gas leakage inside the airbag 343. The air injection tube 344 is supplied with air by an external air pump. When in use, air is pumped into the air injection tube 344 by the air pump. The gas enters the airbag 343 through the valve core. The inflation volume can be adjusted by the air pump, thereby controlling the extension length of the second protrusion 37.

[0050] By connecting an external air pump, the inflation volume of the airbag 343 can be adjusted, thereby controlling the extension length of the second protrusion 37.

[0051] When the airbag 343 inflates, it pushes the second protrusion 37 outward from the opening 342, making the second protrusion 37 protrude from the surface of the first protrusion 36. At this time, the massage intensity is enhanced, and deep point massage can be achieved. When the airbag 343 deflates and contracts, the second protrusion 37 retracts to be flush with the surface of the first protrusion 36 under the action of the repositioning structure. The massage intensity is gentle and suitable for patients with different tolerance levels.

[0052] L-shaped plates 371 are fixedly connected to both ends of the top of the second protrusion 37. The L-shaped plates 371 are made of stainless steel. The vertical section is fixed to the top of the second protrusion 37. A sliding hole is opened on the horizontal section of the L-shaped plate 371, and a fixing rod 372 is slidably fitted thereon. The fixing rod 372 is a stainless steel round rod, and its two ends are fixed inside the inner cavity 341. A first spring 373 is sleeved on the fixing rod 372. The first spring 373 is a compression spring with a moderate elastic coefficient. One end of the first spring 373 abuts against the horizontal section of the L-shaped plate 371, and the other end of the first spring 373 abuts against the inner side wall of the gripping ring 34. When the airbag 343 deflates, the elastic force of the first spring 373 pushes the L-shaped plate 371 to drive the second protrusion 37 to reset, ensuring smooth telescopic movement.

[0053] The outer wall of the connecting arm 31 is rotatably connected to the drive arm 35 via a pivot. The drive arm 35 is made of the same lightweight aluminum alloy as the connecting arm and is about 18cm long. Its other end is fixedly connected to the output end (push rod 47) of the drive unit 4. When the drive unit 4 drives the push rod 47 to move, the drive arm 35 can pull the connecting arm 31 to rotate around the pivot, thereby driving the gripping ring 34 to open and close, and complete the gripping massage.

[0054] In addition, the upper and lower pinching rings 34 are staggered on the horizontal projection along the length of the lower limb. The pinching position of the upper pinching ring 34 corresponds to the gap position between the two lower pinching rings 34. This staggered design can avoid massage blind spots and ensure that every part of the lower limb can be massaged evenly. The first protrusion 36 and the second protrusion 37 are both made of elastic rubber, which is soft and can effectively protect the patient's skin and avoid pressure marks or damage.

[0055] In this embodiment, such as Figure 1 , Figure 2 , Figure 3 , Figure 4 , Figure 5 and Figure 6 As shown, the drive unit 4 is located on top of the support unit 2 and is connected to the gripping mechanism 3 for transmission. It is used to drive the gripping mechanism 3 to perform periodic opening and closing movements to provide power for gripping massage. The drive unit 4 includes a C-shaped frame 41, a T-shaped plate 42, a moving block 43, a rectangular frame 44, a rack 45, a connecting rod 46, a push rod 47, a drive motor 48, and a sector gear 49.

[0056] The C-shaped frame 41 is welded from stainless steel and is C-shaped in shape. Its bottom is welded and fixed to the upper end of the support frame 22. The two side walls of the C-shaped frame 41 are provided with pivot holes for rotating the connecting arm 31 of the gripping mechanism to ensure that the connecting arm 31 can rotate flexibly. The inner walls of the two sides of the C-shaped frame 41 are provided with sliding grooves 411. The sliding grooves 411 are rectangular grooves with a length of about 30cm, which are used to slide with the push rod 47 to limit the movement direction of the push rod 47.

[0057] A T-shaped plate 42 is fixedly connected to the bottom end of the C-shaped frame 41 by welding. The top of the T-shaped plate 42 has a horizontally extending moving groove 421. The moving groove 421 is a rectangular groove with a width that matches the moving block 43. The moving block 43 is slidably connected in the moving groove 421 and can move horizontally and smoothly along the moving groove. The top surface of the moving block 43 has a threaded hole for fixed connection with the connecting rod 46.

[0058] The rectangular frame 44 is a rectangular frame made of lightweight aluminum alloy. Inside, two sides are fixed with racks 45 by welding. The tooth surfaces of the two racks 45 are set opposite each other with uniform tooth pitch, which is compatible with the sector gear 49. One end of the rectangular frame 44 is fixedly connected to the connecting rod 46 by bolts.

[0059] The bottom of the T-shaped plate 42 is fixedly connected to a drive motor 48 by bolts. The drive motor 48 is a servo motor with adjustable power and smooth operation. Its output shaft passes through the preset through hole of the T-shaped plate 42. The end of the output shaft is fixedly connected to a sector gear 49 by a key. The sector gear 49 is located inside the rectangular frame 44. Its tooth arc angle is about 180°. It can alternately mesh with two racks 45. When the sector gear rotates, it can drive the rectangular frame 44 to move back and forth horizontally.

[0060] The other end of the connecting rod 46 is fixedly connected to the push rod 47 by welding. The push rod 47 has sliders at both ends. The sliders slide in cooperation with the slide groove 411 of the C-shaped frame 41 to ensure that the push rod 47 can move back and forth smoothly along the slide groove 411. The top and bottom of the push rod 47 are rotatably connected to the drive arm 35 through the rotating shaft. The drive arm 35 corresponds to the connecting arm 31 of the gripping mechanism 3. When the push rod 47 moves back and forth, it can drive the drive arm 35 to swing, thereby pulling the connecting arm 31 to rotate, realizing the opening and closing action of the gripping ring 34.

[0061] In this embodiment, such as Figure 1 and Figure 2 As shown, the support units 2 are symmetrically arranged on the left and right sides of the base 1, located in front of the seat 7. Each support unit includes an electric lead screw linear module 21 and a support frame 22. The two support units operate synchronously to ensure that the gripping mechanisms on both sides move in unison.

[0062] The electric lead screw linear module 21 is fixedly installed along the length of the base 1 by bolts. Its length is adapted to the front length of the base 1, about 80cm. It adopts a silent design, and the noise during operation is less than 30dB, so as not to affect the rest of critically ill patients. The slide of the electric lead screw linear module 21 can move smoothly along the length of the module. The moving speed can be adjusted by an external controller (adjustment range 0.5-2cm / s). The top of the slide is provided with a threaded hole for fixed connection with the support frame 22.

[0063] The support frame 22 is an inverted U-shaped bracket, welded from stainless steel, with a height of approximately 50cm. Its bottom ends are fixedly connected to the slide of the electric lead screw linear module 21 via bolts. Anti-slip pads are added to the connection points to enhance stability. The upper end of the support frame 22 is fixedly connected to the C-shaped frame 41 of the drive unit 4 via welding, allowing it to move synchronously with the slide. This, in turn, drives the grasping mechanism 3 to move along the length of the patient's lower limb, achieving massage of different areas.

[0064] In this embodiment, such as Figure 1 and Figure 10 As shown, at the front of the base 1, between the left and right support units 2, there are two brackets 5 fixed by bolts, which are used to support the patient's left and right legs respectively. The brackets 5 are made of medical-grade ABS material, with a length of about 70cm, a width of about 15cm, and a height of about 10cm.

[0065] The upper surface of the bracket 5 is machined with an arc-shaped concave surface that conforms to the curve of the human leg. The concave surface curves to fit the natural contour of the thigh and calf, with a depth of about 3cm. It can effectively support the patient's lower limbs and avoid muscle tension caused by the lower limbs being suspended in the air. At the same time, it improves the fit and comfort during massage. Multiple hollow holes 51 are equally spaced along the length of the bracket 5. The hollow holes 51 are circular, with a diameter of about 2cm and a spacing of about 5cm. They are used to assist the upright rod 61 of the pressing unit 6 to pass through, ensuring that the upright rod can move up and down flexibly.

[0066] The auxiliary pressing unit 6 is set on the bracket 5 and is used in conjunction with the grasping mechanism 3 to intermittently press the bottom surface of the patient's lower limbs to further enhance the massage effect and promote blood circulation in the lower limbs. The auxiliary pressing unit 6 includes a vertical rod 61, a second spring 62, a base plate 63 and a connecting plate 64. Each bracket 5 corresponds to one set of auxiliary pressing units 6.

[0067] There are several uprights 61, the number of which is the same as the number of perforated holes 51 on the bracket 5. The uprights 61 are made of stainless steel round rods with a diameter slightly smaller than that of the perforated holes 51. They fit with the perforated holes 51 with a gap and can slide up and down flexibly within the perforated holes. The top of the uprights 61 is rounded to avoid scratching the patient's skin. The top is also covered with a soft silicone pad to enhance the comfort of pressing.

[0068] The bottom end of the upright 61 is fixedly connected to a base plate 63 by welding. The base plate 63 is a rectangular flat plate made of the same material as the upright and its length is adapted to the width of the bracket 5. It is used to fix the upright 61 and transmit power. A second spring 62 is sleeved on the upright 61. The second spring 62 is a tension spring. One end of the second spring 62 is fixed to the lower surface of the bracket 5 by welding, and the other end of the second spring 62 is fixed to the upper surface of the base plate 63 by welding. When the base plate 63 is subjected to an upward force, the second spring 62 is compressed, and the upright 61 moves upward to realize the pressing action. When the force disappears, the second spring returns to its original position, driving the upright 61 downward.

[0069] A connecting plate 64 is welded and fixed between two adjacent base plates 63. The connecting plate 64 is a rectangular plate made of the same material as the base plate. It is used to connect multiple uprights 61 into a whole, ensuring that all uprights move up and down synchronously, so as to achieve uniform pressing on the bottom surface of the lower limbs.

[0070] Working principle: Move the patient onto the seat 7 and place both legs on the concave surfaces of the left and right supports 5 respectively. Based on the length of the patient's lower limbs, start the electric lead screw linear module 21 through the control panel. The slide of the electric lead screw linear module 21 drives the support frame 22 to move back and forth, thereby driving the C-shaped frame 41 and the entire grasping mechanism 3 to move, so that the grasping ring 34 is aligned with the leg area that needs to be massaged.

[0071] Depending on the patient's desired massage intensity, an appropriate amount of gas is injected into the airbag 343 via an external air source. If a gentle massage is required, the airbag is not inflated or only slightly inflated, and the second protrusion 37 remains retracted under the action of the first spring 373, with only the first protrusion 36 contacting the leg. If a stronger massage is required, gas is injected, and the airbag 343 expands, pushing the second protrusion 37 outward to increase the height of the massage protrusion and thus increase the massage intensity.

[0072] Start the drive motor 48, which drives the sector gear 49 to rotate. When the tooth arc of the sector gear 49 meshes with one of the racks 45 in the rectangular frame 44, the sector gear 49 pushes the rack 45 to move to the right with reference to the direction the patient is facing the device. The rectangular frame 44 moves to the right accordingly. The rectangular frame 44 drives the moving block 43 to slide to the right in the moving groove 421 of the T-shaped plate 42 through the connecting rod 46. The moving block 43 drives the push rod 47 to slide to the right along the slide groove 411 of the C-shaped frame 41 through the connecting rod 46. When the push rod 47 moves to the right, the drive arm 35, which is rotatably connected to its top and bottom, swings to the right. The drive arm 35 pulls the connecting arm 31 to rotate outward away from the leg about its rotation axis on the C-shaped frame 41, thereby causing the gripping ring 34 to open outward.

[0073] As the sector gear 49 continues to rotate, its tooth arc disengages from one rack 45 and meshes with the other rack 45. The sector gear 49 pushes the rack 45 to move to the left, and the rectangular frame 44 moves to the left accordingly. Similarly, the push rod 47 slides to the left, the drive arm 35 swings to the left, and pushes the connecting arm 31 to rotate inward toward the leg, thereby causing the grasping ring 34 to close inward and grasp the patient's leg.

[0074] As the sector gear 49 rotates continuously, the above process is repeated, and the grasping ring 34 performs periodic opening and closing movements to simulate the grasping action of a human hand. During the grasping process, the first protrusion 36 and the second protrusion 37 on the inner side of the grasping ring 34 apply multi-point pressure to the side of the leg to promote blood circulation.

[0075] Since a connecting buffer 33 is provided between the first fixing ring 32 and the grasping ring 34, when the grasping ring 34 contacts the patient's leg, if the leg is uneven in size or the patient moves slightly, the connecting buffer 33 will generate elastic compression, so that the grasping ring 34 has a certain ability to give way, avoiding discomfort caused by rigid compression.

[0076] While the grasping mechanism 3 is working, the auxiliary pressing unit 6 moves synchronously. When the lower grasping ring 34 closes under the action of the driving unit 4, the lower grasping ring 34 moves upward, contacts and presses the auxiliary pressing unit 6. At this time, the protrusion on the grasping ring 3 squeezes the base plate 63 or the connecting plate 64, the base plate 63 moves upward, and drives the upright 61 to move upward. The top of the upright 61 extends out of the upper surface of the bracket 5 and touches the bottom surface of the patient's leg, generating an upward pressing force.

[0077] As the grasping ring 34 opens and closes periodically, the upright rod 61 also moves up and down periodically, intermittently pressing the bottom of the patient's leg.

[0078] While the grasping and pressing actions are being performed, the electric lead screw linear module 21 can be activated, causing its slide to drive the support frame 22 to move slowly along the length of the base 1. The support frame 22 drives the C-shaped frame 41 and the entire grasping mechanism 3 to move synchronously, thereby increasing the massage coverage area.

[0079] All standard parts used in this application can be purchased from the market. The specific connection methods of each part adopt conventional methods such as bolts, rivets, and welding that are mature in the prior art. The machinery, parts and equipment adopt conventional models in the prior art and are also general components, which are common knowledge in this field.

[0080] Although embodiments of the invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. A lower limb massage device for intensive care, characterized in that, include: Base (1); A seat (7) is fixedly installed on the upper rear part of the base (1); A support unit (2) is installed at the front of the base (1) and located in front of the seat (7), and there are two support units (2); A grasping mechanism (3) is symmetrically arranged on the left and right sides of the base (1) and located on the support unit (2). The grasping mechanism (3) is used to grasp and massage the patient's lower limbs. A drive unit (4) is mounted on the support unit (2) and is connected to the gripping mechanism (3) for driving the gripping mechanism (3) to perform periodic opening and closing movements. A bracket (5) fixed to a base (1) for supporting the patient's lower limbs, wherein there are two brackets (5); An auxiliary pressing unit (6) is set on the bracket (5). The auxiliary pressing unit (6) cooperates with the grasping mechanism (3) to intermittently press the bottom surface of the patient's lower limb.

2. The intensive care lower limb massage device according to claim 1, characterized in that: The gripping mechanism (3) includes two layers of gripping components that are staggered. The gripping components include a connecting arm (31). A first fixing ring (32) is fixedly connected to the bottom of the connecting arm (31). A connecting buffer (33) is provided at the bottom of the first fixing ring (32). A gripping ring (34) is connected to the bottom of the first fixing ring (32) through the connecting buffer (33). A driving arm (35) is rotatably connected to the outer wall of the connecting arm (31). The other end of the connecting arm (31) rotates on the fixed end of the driving unit (4). The other end of the driving arm (35) is fixedly connected to the output end of the driving unit (4).

3. The intensive care lower limb massage device according to claim 2, characterized in that: The connecting buffer (33) is a compression spring or a rubber column. One end of the spring is fixedly connected to the outer arc surface of the first fixed ring (32), and the other end is fixedly connected to the inner arc surface of the gripping ring (34). The gripping ring (34) is an arc-shaped semi-circle. The inner surface of the gripping ring (34) is provided with a plurality of fixed first protrusions (36) and a plurality of retractable second protrusions (37).

4. A lower limb massage device for intensive care according to claim 3, characterized in that: The gripping ring (34) has an arc-shaped inner cavity (341) inside, and the bottom surface of the inner cavity (341) has multiple openings (342), and a second protrusion (37) is slidably arranged in each opening (342). An airbag (343) is fixedly installed inside the inner cavity (341). The outer wall of the airbag (343) is in contact with or fixedly connected to the inner end of the second protrusion (37). An air injection tube (344) with one end extending out of the inner cavity (341) is fixedly connected to the airbag (343). When the airbag (343) inflates, it pushes the second protrusion (37) outward from the opening (342), so that the second protrusion (37) protrudes from the surface of the first protrusion (36); When the airbag (343) deflates and contracts, the second protrusion (37) retracts to be flush with the surface of the first protrusion (36).

5. A lower limb massage device for intensive care according to claim 4, characterized in that: The top two ends of the second protrusion (37) are respectively fixedly connected to L-shaped plates (371). A fixing rod (372) is slidably fitted on the L-shaped plate (371). The two ends of the fixing rod (372) are respectively fixed inside the inner cavity (341). A first spring (373) is sleeved on the fixing rod (372). One end of the first spring (373) abuts against the horizontal section of the L-shaped plate (371), and the other end of the first spring (373) abuts against the inner side wall of the gripping ring (34).

6. A lower limb massage device for intensive care according to claim 2, characterized in that: The drive unit (4) includes a C-shaped frame (41) and a rectangular frame (44). The C-shaped frame (41) is fixed to the top of the support unit (2). A connecting arm (31) is rotatably connected to the side wall of the C-shaped frame (41). Slide grooves (411) are provided on the inner walls of both sides of the C-shaped frame (41). A T-shaped plate (42) is fixedly connected to one end of the bottom of the C-shaped frame (41). A moving groove (421) extending in the horizontal direction is opened on the top of the T-shaped plate (42). A moving block (43) is slidably connected in the moving groove (421). The rectangular frame (44) has racks (45) fixed on both sides inside, with the tooth surfaces of the two racks (45) facing each other. A connecting rod (46) is fixedly connected to one end of the rectangular frame (44), and the connecting rod (46) is fixedly connected to the top surface of the moving block (43). A drive motor (48) is fixedly connected to the bottom of the T-shaped plate (42). The output shaft of the drive motor (48) passes through the T-shaped plate (42) upward. A sector gear (49) is fixedly connected to the end of the output shaft. The sector gear (49) is located inside the rectangular frame (44). The tooth arc of the sector gear (49) can alternately mesh with two racks (45). The other end of the connecting rod (46) is fixedly connected to a push rod (47), both ends of the push rod (47) are slidably connected to the slide groove (411), and the top and bottom of the push rod (47) are rotatably connected to a drive arm (35).

7. A lower limb massage device for intensive care according to claim 6, characterized in that: The support unit (2) includes an electric lead screw linear module (21) and a support frame (22). The electric lead screw linear module (21) is fixedly installed on the upper surface of the base (1) along the length direction of the base (1). The bottom of the support frame (22) is fixedly connected to the slide of the electric lead screw linear module (21), and the upper end of the support frame (22) is fixedly connected to the C-shaped frame (41).

8. A lower limb massage device for intensive care according to claim 1, characterized in that: The bracket (5) has multiple perforated holes (51) equidistantly through it along its length. One end of the auxiliary pressing unit (6) passes through the perforated holes (51) and can extend upwards out of the upper surface of the bracket (5).

9. A lower limb massage device for intensive care according to claim 8, characterized in that: The auxiliary pressing unit (6) includes a support rod (61), which has several supports. The support rod (61) is fitted with a perforated hole (51) with a clearance. The bottom end of the support rod (61) is fixedly connected to a base plate (63). A second spring (62) is sleeved on the support rod (61). One end of the second spring (62) is fixed on the bracket (5), and the other end of the second spring (62) is fixed on the upper surface of the base plate (63). A connecting plate (64) is fixedly connected between two adjacent base plates (63).

10. A lower limb massage device for intensive care according to claim 3, characterized in that: The upper and lower gripping rings (34) are staggered on the horizontal projection along the length of the lower limb. The gripping position of the upper gripping ring (34) corresponds to the gap position between the two gripping rings (34) of the lower layer. The inner surface of the gripping ring (34) is also covered with a flexible pad. The first protrusion (36) and the second protrusion (37) are both made of elastic rubber.

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