CN111956429A - Multifunctional lower limb bolster - Google Patents

Abstract

The invention discloses a multifunctional lower limb cushion, which belongs to the technical field of lower limb cushions, and comprises a carrier, a lower limb cushion, a lifting bracket, a traction mechanism, a patella loosening mechanism and a control box; On the two side plates of the carrier, there is a lifting function; the traction mechanism is installed on the lifting bracket, which includes a fixed pulley, a first step motor, a first pull rope, a tension sensor and a second pull rope; the first step motor passes through The rotation drives the first traction rope and the second traction rope to perform the traction action, and the tension sensor is used to monitor the pulling force of the traction rope; the patella loosening mechanism is installed at the bottom of the lifting bracket, which includes a drive shaft, a mounting block, a connecting rod, a fitting head and a second Stepping motor; the patella loosening mechanism has the functions of pushing the patella left and right and forward and backward; the control box acts as a control center and is provided with a plurality of operation control keys; the invention solves the problem of single function of the existing lower limb pillow.

Description

A multifunctional lower extremity pillow

technical field

The invention relates to the technical field of lower extremity pillows, in particular to a multifunctional lower extremity pillow.

Background technique

The lower extremity pillow is a medical device that raises the patient's lower extremity to promote venous return during nursing. It is often used in patients with lower extremity surgery or trauma. It cannot serve patients with different needs; for example, the existing lower limb pillow does not have a traction function, and a traction device needs to be installed on the hospital bed, which is inconvenient; another example, the existing lower limb pillow does not have the function of patella massage, requiring medical care It is time-consuming and labor-intensive for personnel or family members to perform patellar mobilization. Therefore, it is necessary to propose a multifunctional lower extremity pillow to solve the above problems.

SUMMARY OF THE INVENTION

In view of the above, it is necessary to provide a multifunctional lower extremity bolster to solve the problem of single function of the existing lower extremity bolster.

In order to achieve the above object, the technical scheme adopted in the present invention is:

A multifunctional lower limb cushion includes a carrier, a lower limb cushion, a lifting bracket, a traction mechanism, a patella loosening mechanism and a control box;

The carrier includes a bottom plate and two side plates, the bottom plate is arranged horizontally, the two side plates are vertically arranged on the left and right sides of the bottom plate, and the length direction of the side plate is parallel to the length direction of the bottom plate set up;

The lower limb pad is arranged in the middle of the bottom plate, and is arranged at intervals from the two side plates, and the length direction of the lower limb pad is arranged parallel to the length direction of the bottom plate;

The lifting bracket includes two electronically controlled lifting rods and a top plate, the bottom of the electronically controlled lifting rod is provided with a first sliding block, the first sliding block is slidably connected with the side plate, and the sliding direction is the same as that of the side plate. The length direction is arranged in parallel; the slider is provided with a locking screw for locking it on the side plate; the top plate is arranged across the top of the two electrically controlled lifting rods and is arranged horizontally;

The traction mechanism includes a fixed pulley, a first step motor, a first traction rope, a tension sensor and a second traction rope; a mounting seat is provided on the top surface of the top plate, and the fixed pulley is rotatably mounted on the mounting seat , the first step motor is installed on the top plate, and its output shaft is provided with a reel; the axis direction of the fixed pulley and the axis direction of the reel are horizontal The length direction of the bottom plate is vertically arranged; the horizontal projections of the fixed pulley and the reel on the top plate are arranged at intervals, and are located on the center line of the top plate; one end of the first traction rope is connected with the reel, The other end crosses the fixed pulley and is connected with the tension sensor, one end of the second traction rope is connected with the tension sensor, the other end is movably arranged, and the second traction rope is an elastic rope;

The patella loosening mechanism includes a drive shaft, a mounting block, a connecting rod, a matching head and a second stepping motor; the drive shaft is vertically arranged in the center of the bottom surface of the top plate and is rotatably connected with the top plate; the installation The block is arranged at the bottom of the drive shaft and is arranged horizontally; the installation block is provided with a second sliding block, which is slidably connected with the installation block; The driving part for the reciprocating motion of the slider; the top of the connecting rod is connected with the second slider, and the bottom of the connecting rod is connected with the matching head; the matching head is trumpet-shaped, and the inner side of the matching head is provided with a silicone layer ; The second stepping motor is arranged at the bottom of the top plate, and is connected with the drive shaft through gears;

The control box includes a box body arranged at one end of the bottom plate and a control module, a power supply module, a first motor drive module, a second motor drive module, two lift drive modules and a round-trip drive module all arranged in the box body; the The power supply module, the first motor driving module, the second motor driving module, the two lift driving modules, the reciprocating driving module and the tension sensor are all electrically connected to the control module; the first motor driving module is electrically connected to the control module; The motor drive module is electrically connected to the first stepper motor, the second motor drive module is electrically connected to the second stepper motor, and the two lift drive modules are electrically connected to the two electrically controlled lift rods respectively. Sexual connection, the round-trip drive module is electrically connected with the drive element;

The top surface of the box body is provided with a control panel, and the control panel is provided with an up key, a down key, a display screen, an input keyboard, a stop key, a reset key, a traction start key and a patella loosening start key; In order to control the two electronically controlled lifting rods to rise, the down key is used to control the two electronically controlled lifting rods to descend; the display screen is used to display the tension value monitored by the tension sensor, and the input keyboard is used to set The pulling force value of lower limb traction; the display screen is also used to display the number of times the driving element drives the second slider to perform reciprocating motion, and the input keyboard is also used to set the required number of round trips; the stop key is used to suspend the current operation The reset key is used to control the patella loosening mechanism to reset to the initial state. When the patella loosening mechanism is in the initial state, the connecting rod and the drive shaft are located on the same axis, and the sliding direction of the second slider is the same as that of the second slider. The length direction of the bottom plate is vertically arranged;

The traction start key is used to start the traction mechanism, when the traction start key is triggered, the first step motor rotates slowly under the control of the control module and the first motor drive module, and the first step motor rotates slowly under the control of the control module and the first motor drive module. The traction rope is wound up until the tension value monitored by the tension sensor is equal to the set tension value, the first step motor stops rotating, and the first step motor is a self-locking step motor;

The patella loosening start key is used to start the patella loosening mechanism, and when the patella loosening start key is triggered, the driving member drives the second sliding block to perform reciprocating motion under the driving of the control module and the reciprocating driving module , drive the matching head to push the patient's patella left and right; when the number of reciprocating movements of the second slider reaches the set number of reciprocations, the count is cleared, and the second stepper motor is connected between the control module and the second motor. The driving module rotates 90 degrees under the control of the driving module, and drives the mounting block to rotate 90 degrees; then, the driving member drives the second sliding block to reciprocate under the driving of the control module and the reciprocating driving module, and drives the mating head to push back and forth The patient's patella, in turn, circulates.

Preferably, a T-shaped chute is provided on the side plate, and is slidably connected to the first slider through the T-shaped chute, and the T-shaped chute runs through the front and rear sides of the side plate.

Preferably, the driving member is a screw motor or an electric push rod.

Preferably, the interior of the connecting rod is hollow, and a connecting hole is formed at the bottom of the connecting rod; a movable rod is vertically disposed on the upper part of the matching head, and the movable rod movably passes through the connecting hole, and the size of the connecting hole is the same as the size of the connecting hole. The size of the movable rod is matched; the movable rod is fixedly sleeved with a limiting plate, and the limiting plate is located in the connecting rod and is movably connected with the connecting rod; the outer side of the movable rod is movable sleeved with The spring is located in the connecting rod, and its size is smaller than the size of the restricting plate, the lower end of the spring is connected with the restricting plate, and the upper end is connected with the connecting rod.

Preferably, the lower end of the movable rod is threadedly connected with the matching head.

Preferably, the lower extremity pad is hollow inside, forming a mounting cavity for installing the massager; the lower extremity pad has a fitting surface for fitting the patient's thigh and a supporting surface for supporting the patient's calf and feet; the The supporting surface is arranged horizontally, the fitting surface is arranged obliquely, its upper end is connected with the supporting surface, and the lower end is connected with the top surface of the bottom plate; Massagers are provided on both sides; massage ports are provided on both the bonding surface and the support surface, and a mesh cover is provided at the massage ports; the massager includes a massage motor and a massage head, and the massage motor Installed in the installation cavity, the massage head is installed on the output shaft of the massage motor, the massage head passes through the massage port on the side away from the massage motor, and is in contact with the mesh cover The outside of the box body of the control box is provided with two massage switches, and the massage motor is electrically connected with the power supply module through the massage switches.

Preferably, the lower limb pad is provided with guard plates on both the left and right sides of the fitting surface and the supporting surface.

Preferably, the bottom of the lower limb pad is provided with a square bump, the bottom plate is provided with a square groove corresponding to the square bump, and the square bump is matched and connected with the square groove.

Preferably, the lower limb pad is provided with a first restraint belt and a second restraint belt on the left and right sides of the connection between the fitting surface and the support surface, respectively, one end of the first restraint belt is fixedly connected with the lower limb pad, and the other end is provided with There is a first connecting piece; one end of the second restraint belt is fixedly connected with the lower limb pad, and the other end is provided with a second connecting piece, the first connecting piece and the second connecting piece are detachably connected; the first connecting piece and the second connecting piece are detachably connected; Both the restraint belt and the second restraint belt are provided with an infrared heating sheet, and the infrared heating sheet is electrically connected to the power supply module through a heating switch, and the heating switch is arranged outside the box body of the control box.

Preferably, the control module is a single-chip microcomputer module or a PLC module.

Owing to adopting the above-mentioned technical scheme, the present invention has the following beneficial effects:

1. The present invention is provided with a traction mechanism on the lifting bracket, which can perform traction therapy on the lower limbs of the patient without the need to install a traction device on the hospital bed, nor to weigh a suitable weight for traction, which brings benefits to medical staff and patients. Great convenience; wherein, the control box is provided with a traction start button, when the traction start button is triggered, the first step motor rotates slowly under the control of the control module and the first motor drive module, and the first traction rope is operated. Rewind until the tension value monitored by the tension sensor is equal to the set tension value, and the first step motor stops rotating; when the patient wants to move the lower limb backward to reduce the traction, the tension value monitored by the tension sensor is less than the set tension value value, the first step motor continues to rotate, so that the pulling force of the traction rope is always maintained at the set pulling force value to ensure the effectiveness of the traction treatment.

2. The present invention is provided with a patella loosening mechanism on the lifting bracket, which can loosen and massage the patient's patella, is suitable for patients after knee joint surgery, and improves the patient's recovery speed; wherein, the control box is provided with a patella loosening start button, When the patella loosening start button is triggered, the driving member drives the second slider to reciprocate under the driving of the control module and the reciprocating drive module, and drives the matching head to push the patient's patella left and right; when the number of reciprocating movements of the second slider reaches the set value When the number of round trips is determined, the count is cleared, and the second stepper motor rotates 90 degrees under the control of the control module and the second motor drive module, driving the installation block to rotate 90 degrees; It drives the second slider to move back and forth under the driving force of the motor, and drives the cooperating head to push the patient's patella back and forth, and circulates in turn; in this way, the mechanical massage method replaces the manual massage method of medical staff or the patient's family, which has the advantages of saving time and effort, and saving medical staff's attention. It brings great convenience to the staff and the family members of the patients.

3. The lower limb pad of the present invention has a fitting surface for fitting the patient's thigh and a supporting surface for supporting the patient's calf and foot, and is provided in the middle of the fitting surface and the side of the supporting surface close to the fitting surface. There is a massager, which can massage the thigh muscles and calf muscles of the patient to promote blood circulation, thereby promoting the recovery of the lower limbs, and avoiding the problem of lower limb discomfort caused by the patient's long-term bed rest.

4. The lower limb pad of the present invention is also provided with a first restraint belt and a second restraint belt, and the first restraint belt and the second restraint belt are detachably connected, which can better fix the lower limbs of the patient; the first restraint belt Infrared heating sheets are arranged in the second restraint belt and the knee joint, which can perform infrared physiotherapy on the knee joint of the patient, promote the blood circulation of the knee joint, and improve the recovery speed.

5. The lower limb pad of the present invention is detachably connected to the bottom plate of the carrier. When the lower limb pad is not needed, the lower limb pad can be removed from the carrier; the lifting bracket of the present invention is detachably connected to the side plate of the carrier. When using the traction mechanism and the patella loosening mechanism, the lifting bracket together with the traction mechanism and the patella loosening mechanism can be removed from the carrier; in addition, the lifting bracket has a lifting function, and the lifting mechanism and the patella loosening mechanism can be adjusted during use; this The invention can be used flexibly to meet different usage needs.

6. The carrier of the present invention also has the function of preventing stab wounds. When the present invention is used for lower limb bone traction, the second traction rope is connected to the traction bow, and the traction bow is fixed on the patient's lower limb bones and is located between the two side plates of the carrier. , the two side plates can block the exposed tip of the traction bow, so as to prevent the exposed tip of the traction bow from puncturing the healthy limb of the patient or puncturing the bed sheet.

7. A movable rod and a spring are arranged between the matching head and the connecting rod of the present invention, so that there is a buffering effect between the matching head and the connecting rod. When the matching head is in the process of horizontal movement, if the resistance is too large, it can move upwards. Avoid injury to the patient's patella and ensure the safety of the patella loosening operation.

8. The matching head of the present invention is threadedly connected with the movable rod, so that the matching head can be disassembled. In actual work, medical staff can prepare matching heads of different sizes, and select suitable matching heads according to different patients and install them on the movable rod. Comfort and effectiveness of patella massage.

Description of drawings

1 is a top view of a multifunctional lower limb pillow provided by an embodiment of the present invention;

Fig. 2 is the installation schematic diagram of the lower limb pad provided by the embodiment of the present invention;

Fig. 3 is the installation schematic diagram of the lifting bracket provided by the embodiment of the present invention;

Fig. 4 is the installation schematic diagram of the traction mechanism provided by the embodiment of the present invention;

Fig. 5 is the installation schematic diagram of the patella loosening mechanism provided by the embodiment of the present invention;

Fig. 6 is the partial enlarged view of A place in Fig. 5;

7 is a schematic diagram of the electrical connection of the multifunctional lower extremity pillow provided by the embodiment of the present invention;

The main component symbols in the figure are explained as follows:

In the accompanying drawings, 1- bottom plate, 2- side plate, 3- lower limb pad, 4- installation cavity, 5- fitting surface, 6- supporting surface, 7- massager, 8- massage port, 9- net cover, 10 -Guard plate, 11-square bump, 12-first restraint belt, 13-first connection piece, 14-second restraint belt, 15-second connection piece, 16-infrared heating plate, 17-electrically controlled lifting rod , 18-top plate, 19-first slider, 20-locking screw, 21-T-shaped chute, 22-fixed pulley, 23-installation seat, 24-first step motor, 25-winding wheel, 26 -First traction rope, 27-tension sensor, 28-second traction rope, 29-drive shaft, 30-installation block, 31-second slider, 32-drive piece, 33-connecting rod, 34-matching head, 35-moving rod, 36-limiting plate, 37-spring, 38-second stepper motor, 39-gear, 40-control box, 41-control module, 42-power supply module, 43-first motor drive module, 44 -Second motor drive module, 45- Lifting drive module, 46- Reciprocating drive module, 47- Control panel, 48- Heat switch, 49- Massage switch, 50- Massage motor.

The following specific embodiments will further illustrate the present invention in conjunction with the above drawings.

Detailed ways

The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only a part of the embodiments of the present invention, rather than all the embodiments. The accompanying drawings are for illustrative purposes only, and represent only schematic diagrams, not physical drawings, and should not be construed as limitations on this patent. In order to better illustrate the specific embodiments of the present invention, some parts of the accompanying drawings may be omitted or enlarged. or reduction, does not represent the size of the actual product. For those skilled in the art, it is understandable that some well-known structures, components and their descriptions in the drawings may be omitted. Based on the embodiments of the present invention, those skilled in the art may All other embodiments obtained without creative work fall within the protection scope of the present invention.

In the description of the present invention, it should also be noted that, unless otherwise expressly specified and limited, the terms "arrangement" and "connection" should be understood in a broad sense, for example, it may be a fixed connection, a detachable connection, or an integrated connection. It can be a mechanical connection or an electrical connection; it can be a direct connection or an indirect connection through an intermediate medium, and it can be the internal communication between the two components. For those of ordinary skill in the art, the specific meanings of the above terms in the present invention can be understood according to specific situations.

Example

As shown in FIGS. 1-7 , a multifunctional lower limb cushion includes a carrier, a lower limb cushion 3 , a lifting bracket, a traction mechanism, a patella loosening mechanism and a control box 40 .

The carrier includes a bottom plate 1 and two side plates 2, the bottom plate 1 is horizontally arranged, the two side plates 2 are vertically arranged on the left and right sides of the bottom plate 1 respectively, and the length direction of the side plates 2 is parallel to the length direction of the bottom plate 1.

The lower limb pad 3 is arranged in the middle of the bottom plate 1 and is arranged spaced apart from the two side plates 2 , and the length direction of the lower limb pad 3 is parallel to the longitudinal direction of the bottom plate 1 . The lower limb pad 3 is hollow inside, forming an installation cavity 4 for installing the massager 7 . The lower limb pad 3 has a fitting surface 5 for fitting the patient's thigh and a supporting surface 6 for supporting the patient's calf and feet. The supporting surface 6 is arranged horizontally, and the adhering surface 5 is arranged obliquely. A massager 7 is provided in the middle of the fitting surface 5 and on the side of the supporting surface 6 close to the fitting surface 5 . Both the fitting surface 5 and the supporting surface 6 are provided with a massage port 8 , and a mesh cover 9 is provided at the massage port 8 . The massager 7 includes a massage motor 50 and a massage head. The massage motor 50 is installed in the installation cavity 4. The massage head is installed on the output shaft of the massage motor 50. The grille 9 touches. The setting of the massager 7 can massage the thigh muscles and calf muscles of the patient to promote blood circulation, thereby promoting the recovery of the lower limbs, and avoiding the problems of poor blood flow and lower limb discomfort caused by the patient's long-term bed rest.

The lower limb pad 3 is provided with a first restraint belt 12 and a second restraint belt 14 on the left and right sides of the connection between the fitting surface 5 and the support surface 6, respectively. One end of the first restraint belt 12 is fixedly connected to the lower limb pad 3, and the other end is provided with There is a first connector 13 . One end of the second restraint belt 14 is fixedly connected to the lower limb pad 3 , and the other end is provided with a second connecting piece 15 , and the first connecting piece 13 and the second connecting piece 15 are detachably connected. Infrared heating sheets 16 are provided in the first restraint belt 12 and the second restraint belt 14 . In the present embodiment, the first connecting member 13 and the second connecting member 15 are hook surface stickers and rough surface stickers of Velcro, respectively. In other embodiments, the first connector 13 and the second connector 15 may also be letter buttons or snap buttons. The first restraint belt 12 and the second restraint belt 14 are detachably connected, which can better fix the lower limbs of the patient; both the first restraint belt 12 and the second restraint belt 14 are provided with infrared heating sheets 16, which can be used to fix the lower limbs of the patient. Infrared physiotherapy is performed on the knee joint of the patient to promote the blood circulation of the knee joint and improve the recovery speed.

In addition, the lower limb pad 3 is provided with guard plates 10 on both the left and right sides of the fitting surface 5 and the supporting surface 6 , so as to restrict the patient's lower limbs on the lower limb pad 3 . The bottom of the lower limb pad 3 is provided with a square bump 11 , the bottom plate 1 is provided with a square groove corresponding to the square bump 11 , and the square bump 11 is matched and connected with the square groove. The lower limb pad 3 is detachably connected to the bottom plate 1, so that the medical staff can choose whether to install the lower limb pad 3 according to the actual needs of the patient. When the patient needs bone traction, the massager 7 is not needed, and a sponge pad can be placed on the lower limb pad 3; or, an additional lower limb pad without a massager can be used for replacement.

The lifting bracket includes two electronically controlled lifting rods 17 and a top plate 18 . The bottom of the electronically controlled lifting rod 17 is provided with a first sliding block 19 . set up. The slider is provided with a locking screw 20 for locking it on the side plate 2 . The top plate 18 is arranged across the tops of the two electrically controlled lifting rods 17 and is arranged horizontally. The side plate 2 is provided with a T-shaped chute 21, which is slidably connected to the first slider 19 through the T-shaped chute 21. The T-shaped chute 21 runs through the front and rear sides of the side plate 2, so that the first slider 19 It can be slid out from the T-shaped chute 21, so that the lifting bracket can be separated from the side plate 2 of the carrier. In this embodiment, the locking screw 20 penetrates through the first sliding block 19 and is threadedly connected to the first sliding block 19; the locking screw 20 can be rotated to contact the inner wall of the T-shaped sliding slot 21, thereby locking the first sliding block 19. Block 19. The position of the lifting bracket on the side panel 2 is adjustable.

The traction mechanism includes a fixed pulley 22 , a first step motor 24 , a first traction rope 26 , a tension sensor 27 and a second traction rope 28 . The top surface of the top plate 18 is provided with a mounting seat 23, the fixed pulley 22 is rotatably mounted on the mounting seat 23, the first step motor 24 is mounted on the top plate 18, and its output shaft is provided with a reel 25. The axial direction of the fixed pulley 22 and the axial direction of the reel 25 are both arranged horizontally and perpendicular to the length direction of the bottom plate 1 . The horizontal projections of the fixed pulley 22 and the reel 25 on the top plate 18 are arranged at intervals and located on the center line of the top plate 18 . One end of the first traction rope 26 is connected to the reel 25, the other end spans the fixed pulley 22, and is connected to the tension sensor 27, one end of the second traction rope 28 is connected to the tension sensor 27, and the other end is movably arranged, the second traction The cord 28 is an elastic cord.

The traction mechanism of the present invention can perform traction therapy on the lower limbs of the patient without installing a traction device on the bed or weighing an appropriate weight for traction, which brings great convenience to medical staff and patients. When the traction mechanism is in operation, the second traction rope 28 is connected to the traction bow or the traction sleeve, and the first step motor 24 rotates slowly under the control of the control box 40 to rewind the first traction rope 26 until the tension sensor 27 monitors. When the tension value is equal to the set tension value, the first step motor 24 stops rotating. When the patient wants to move the lower limb backward to reduce the traction force, the tensile force value monitored by the tensile force sensor 27 is less than the set tensile force value, and the first step motor 24 continues to rotate, so that the pulling force of the traction rope is always maintained at the set tensile force value, Ensure the effectiveness of traction therapy. When the patient wants to move the lower limb forward, the tension value monitored by the tension sensor 27 is greater than the set tension value, the first step motor 24 rotates in the reverse direction, and the first traction rope 26 is released, so that the tension of the traction rope is always kept at the set value. Set the tension value to avoid injury to the lower limbs of the patient due to excessive traction.

The patella loosening mechanism includes a drive shaft 29 , a mounting block 30 , a connecting rod 33 , a fitting head 34 and a second stepping motor 38 . The drive shaft 29 is vertically arranged in the center of the bottom surface of the top plate 18 and is rotatably connected with the top plate 18 . The mounting block 30 is arranged at the bottom of the drive shaft 29 and is arranged horizontally. The mounting block 30 is provided with a second sliding block 31 , and the second sliding block 31 is slidably connected with the mounting block 30 . The mounting block 30 is provided with a driving member 32 for driving the second sliding block 31 to move back and forth. Wherein, the driving member 32 is a screw motor or an electric push rod. In this embodiment, the driving member 32 is a screw motor, and the screw of the screw motor penetrates the second sliding block 31 and is threadedly connected with the second sliding block 31 . The top of the connecting rod 33 is connected with the second sliding block 31 , and the bottom of the connecting rod 33 is connected with the mating head 34 .

The connecting rod 33 is hollow inside, and a connecting hole is opened at the bottom thereof. A movable rod 35 is vertically disposed on the upper part of the mating head 34 , the movable rod 35 is movably penetrated with a connecting hole, and the size of the connecting hole matches the size of the movable rod 35 . A restricting plate 36 is fixedly sleeved on the movable rod 35 , and the restricting plate 36 is located in the connecting rod 33 and is movably connected with the connecting rod 33 . A spring 37 is set on the outer side of the movable rod 35. The spring 37 is located in the connecting rod 33, and its size is smaller than that of the restricting plate 36. The lower end of the movable rod 35 is threadedly connected with the matching head 34 . The fitting head 34 is trumpet-shaped, which is convenient for fitting with the patient's patella, so that the fitting head 34 can cover the outside of the patella. The inner side of the fitting head 34 is provided with a silicone layer, which has a better buffering effect and improves the comfort of contact. The second stepping motor 38 is disposed at the bottom of the top plate 18 and is connected to the drive shaft 29 through a gear 39 in a driving manner. The second stepping motor 38 is used to drive the drive shaft 29 and the mounting block 30 to rotate.

The movable rod 35 and the spring 37 are arranged between the matching head 34 and the connecting rod 33 of the present invention, so that there is a buffering effect between the matching head 34 and the connecting rod 33. When the matching head 34 moves horizontally, if the resistance is too large , can be moved upward to avoid injury to the patient's patella and ensure the safety of the patella loosening operation. The matching head 34 of the present invention is threadedly connected with the movable rod 35, so that the matching head 34 can be disassembled. In actual work, medical staff can prepare matching heads 34 of different sizes, and select appropriate matching heads 34 according to different patients to install on the movable rod. 35 to improve the comfort and effectiveness of patella massage.

The control box 40 includes a box body arranged at one end of the bottom plate and a control module 41 , a power supply module 42 , a first motor drive module 43 , a second motor drive module 44 , two lift drive modules 45 and a round-trip drive module 46 all arranged in the box body. . Wherein, the control module 41 is a single-chip microcomputer module or a PLC module. In this embodiment, the round-trip driving module 46 is a third motor driving module, the control module 41 is a single-chip microcomputer module, and the model of the single-chip microcomputer is STC89C52. The power supply module 42 , the first motor driving module 43 , the second motor driving module 44 , the two lift driving modules 45 , the reciprocating driving module 46 and the tension sensor 27 are all electrically connected to the control module 41 . The first motor drive module 43 is electrically connected to the first stepper motor 24 , the second motor drive module 44 is electrically connected to the second stepper motor 38 , and the two lift drive modules 45 are respectively electrically connected to the two electrically controlled lift rods 17 . , the reciprocating driving module 46 is electrically connected with the driving element 32 . Two massage switches 49 are disposed on the outside of the box body of the control box 40 , and the massage motor 50 is electrically connected to the power supply module 42 through the massage switches 49 . The infrared heating sheet 16 is electrically connected to the power supply module 42 through a heating switch 48 , and the heating switch 48 is arranged outside the box body of the control box 40 .

The top surface of the box body is provided with a control panel 47, and the control panel 47 is provided with an up key, a down key, a display screen, an input keyboard, a stop key, a reset key, a traction start key and a patella loosening start key. The up key is used to control the two electrically controlled lift rods 17 to rise, and the down key is used to control the two electrically controlled lift rods 17 to descend. The display screen is used to display the tension value monitored by the tension sensor 27, and the input keyboard is used to set the tension value of lower limb traction. The display screen is also used to display the number of times the driving member 32 drives the second slider 31 to perform reciprocating motion, and the input keyboard is also used to set the required number of round trips. The stop key is used to suspend the current operation, and the reset key is used to control the patella loosening mechanism to return to the initial state. When the patella loosening mechanism is in the initial state, the connecting rod 33 and the drive shaft 29 are located on the same axis, and the sliding direction of the second slider 31 is the same as that of the drive shaft 29 . The longitudinal direction of the base plate 1 is arranged vertically.

The traction start button is used to start the traction mechanism. When the traction start button is triggered, the first step motor 24 rotates slowly under the control of the control module 41 and the first motor drive module 43 to wind up the first traction rope 26. Until the tension value monitored by the tension sensor 27 is equal to the set tension value, the first stepping motor 24 stops rotating. The first stepping motor 24 is a self-locking stepping motor, and its output shaft will not rotate when it stops working.

The patella loosening start key is used to start the patella loosening mechanism. When the patella loosening start key is triggered, the driving member 32 drives the second slider 31 to reciprocate under the driving of the control module 41 and the reciprocating drive module 46, and drives the fitting head 34 to left and right. Push the patient's patella. When the number of reciprocating motions of the second slider 31 reaches the set number of reciprocations, the count is cleared, and the second stepper motor 38 rotates 90 degrees under the control of the control module 41 and the second motor drive module 44 to drive the installation The block 30 rotates 90 degrees; then, the driving member 32 drives the second sliding block 31 to reciprocate under the driving of the control module 41 and the reciprocating driving module 46, and drives the fitting head 34 to push the patient's patella back and forth, and circulate in turn. The stroke of the reciprocating motion of the second sliding block 31 is determined by the control module 41 and the reciprocating drive 46 . In this embodiment, the strokes of the matching head 34 moving forward, backward, left and right relative to the origin are all 1 cm. The patella loosening mechanism of the present invention can loosen and massage the patient's patella, is suitable for patients after knee joint surgery, improves the patient's recovery speed, and replaces the manual massage by medical staff or patients' family members by mechanical massage, which saves time. The advantages of labor-saving bring great convenience to medical staff and patients' families.

In addition, the lower limb pad 3 of the present invention is detachably connected to the bottom plate 1 of the carrier. When the lower limb pad 3 is not needed, the lower limb pad 3 can be detached from the carrier; the lifting bracket of the present invention is detachable from the side plate 2 of the carrier Connection, when the traction mechanism and patella loosening mechanism are not required, the lifting bracket can be removed from the carrier together with the traction mechanism and the patella loosening mechanism; Lifting adjustment is performed; therefore, the present invention can be used flexibly to meet different usage requirements.

The above description is a detailed description of the preferred feasible embodiments of the present invention, but the embodiments are not intended to limit the scope of the patent application of the present invention. All equivalent changes or modifications completed under the technical spirit suggested by the present invention shall belong to This invention covers the scope of the patent.

Claims (10)

1. A multifunctional lower limb bolster is characterized in that: comprises a carrier, a lower limb pad, a lifting bracket, a traction mechanism, a patella loosening mechanism and a control box;

the carrier comprises a bottom plate and two side plates, the bottom plate is horizontally arranged, the two side plates are respectively vertically arranged on the left side and the right side of the bottom plate, and the length directions of the side plates are parallel to the length direction of the bottom plate;

the lower limb pad is arranged in the middle of the bottom plate and is arranged at intervals with the two side plates, and the length direction of the lower limb pad is parallel to that of the bottom plate;

the lifting support comprises two electric control lifting rods and a top plate, a first sliding block is arranged at the bottom of each electric control lifting rod and is connected with the side plate in a sliding mode, and the sliding direction of each first sliding block is parallel to the length direction of the side plate; the sliding block is provided with a locking screw for locking the sliding block on the side plate; the top plate is arranged on the tops of the two electric control lifting rods in a crossing manner and is horizontally arranged;

the traction mechanism comprises a fixed pulley, a first stepping motor, a first traction rope, a tension sensor and a second traction rope; the top surface of the top plate is provided with an installation seat, the fixed pulley is rotatably installed on the installation seat, the first stepping motor is installed on the top plate, and an output shaft of the first stepping motor is provided with a winding wheel; the axis direction of the fixed pulley and the axis direction of the winding wheel are both horizontally arranged and are both vertical to the length direction of the bottom plate; the fixed pulleys and the winding wheel are arranged on the top plate at intervals in the horizontal projection manner and are positioned on the central line of the top plate; one end of the first traction rope is connected with the winding wheel, the other end of the first traction rope crosses the fixed pulley and is connected with the tension sensor, one end of the second traction rope is connected with the tension sensor, the other end of the second traction rope is movably arranged, and the second traction rope is an elastic rope;

the patella loosening mechanism comprises a driving shaft, a mounting block, a connecting rod, a matching head and a second stepping motor; the driving shaft is vertically arranged in the center of the bottom surface of the top plate and is rotationally connected with the top plate; the mounting block is arranged at the bottom of the driving shaft and is horizontally arranged; the mounting block is provided with a second sliding block, and the second sliding block is connected with the mounting block in a sliding manner; a driving piece for driving the second sliding block to reciprocate is arranged on the mounting block; the top of the connecting rod is connected with the second sliding block, and the bottom of the connecting rod is connected with the matching head; the matching head is horn-shaped, and a silica gel layer is arranged on the inner side of the matching head; the second stepping motor is arranged at the bottom of the top plate and is in transmission connection with the driving shaft through a gear;

the control box comprises a box body arranged at one end of the bottom plate, and a control module, a power supply module, a first motor driving module, a second motor driving module, two lifting driving modules and a reciprocating driving module which are all arranged in the box body; the power supply module, the first motor driving module, the second motor driving module, the two lifting driving modules, the reciprocating driving module and the tension sensor are electrically connected with the control module; the first motor driving module is electrically connected with the first stepping motor, the second motor driving module is electrically connected with the second stepping motor, the two lifting driving modules are respectively electrically connected with the two electric control lifting rods, and the reciprocating driving module is electrically connected with the driving piece;

the top surface of the box body is provided with a control panel, and the control panel is provided with a rising key, a falling key, a display screen, an input keyboard, a stop key, a reset key, a traction starting key and a patella loosening starting key; the ascending key is used for controlling the two electric control lifting rods to ascend, and the descending key is used for controlling the two electric control lifting rods to descend; the display screen is used for displaying the tension value monitored by the tension sensor, and the input keyboard is used for setting the tension value of the lower limb traction; the display screen is also used for displaying the times of the driving piece driving the second sliding block to move back and forth, and the input keyboard is also used for setting the required back and forth times; the stop key is used for pausing the current operation; the reset key is used for controlling the patella loosening mechanism to reset to an initial state, when the patella loosening mechanism is located at the initial state, the connecting rod and the driving shaft are located on the same axis, and the sliding direction of the second sliding block is perpendicular to the length direction of the bottom plate;

the traction starting key is used for starting a traction mechanism, when the traction starting key is triggered, the first stepping motor slowly rotates under the control of the control module and the first motor driving module to wind a first traction rope until a tension value monitored by a tension sensor is equal to a set tension value, the first stepping motor stops rotating, and the first stepping motor is a self-locking stepping motor;

the patella loosening starting key is used for starting the patella loosening mechanism, and when the patella loosening starting key is triggered, the driving piece drives the second sliding block to move back and forth under the driving of the control module and the back and forth driving module, so that the matching head is driven to push the patella of the patient left and right; when the number of times of the reciprocating motion of the second sliding block reaches the set reciprocating number, the counting is reset, and the second stepping motor rotates for 90 degrees under the control of the control module and the second motor driving module to drive the mounting block to rotate for 90 degrees; and then, the driving piece drives the second sliding block to move back and forth under the driving of the control module and the back and forth driving module, so as to drive the matching head to push the patella of the patient back and forth, and the patella is sequentially circulated.

2. The multi-functional lower limb bolster of claim 1 wherein: the side plate is provided with a T-shaped sliding groove, the T-shaped sliding groove is connected with the first sliding block in a sliding mode, and the T-shaped sliding groove penetrates through the front side and the rear side of the side plate.

3. The multi-functional lower limb bolster of claim 1 wherein: the driving piece is a screw motor or an electric push rod.

4. The multi-functional lower limb bolster of claim 1 wherein: the connecting rod is hollow, and a connecting hole is formed in the bottom of the connecting rod; a movable rod is vertically arranged at the upper part of the matching head, the movable rod movably penetrates through the connecting hole, and the size of the connecting hole is matched with that of the movable rod; the movable rod is fixedly sleeved with a limiting plate, and the limiting plate is positioned in the connecting rod and is movably connected with the connecting rod; the outside activity cover of movable rod is equipped with the spring, the spring is located in the connecting rod, its size is less than the restriction plate size, the lower extreme of spring with the restriction plate links to each other, and the upper end links to each other with the connecting rod.

5. The multi-functional lower limb bolster of claim 1 wherein: the lower end of the movable rod is in threaded connection with the matching head.

6. The multi-functional lower limb bolster of claim 1 wherein: the lower limb cushion is hollow inside to form an installation cavity for installing a massager; the lower limb cushion is provided with a fitting surface for fitting the thigh of the patient and a supporting surface for supporting the shank and the foot of the patient; the supporting surface is horizontally arranged, the binding surface is obliquely arranged, the upper end of the binding surface is connected with the supporting surface, and the lower end of the binding surface is connected with the top surface of the bottom plate; massagers are arranged on the middle part of the binding surface and one side of the supporting surface close to the binding surface; the binding surface and the supporting surface are both provided with massage openings, and mesh enclosures are arranged at the massage openings; the massager comprises a massage motor and a massage head, the massage motor is installed in the installation cavity, the massage head is installed on an output shaft of the massage motor, and one side, far away from the massage motor, of the massage head penetrates out of the massage opening and is in contact with the mesh enclosure; the outer side of the box body of the control box is provided with two massage switches, and the massage motor is electrically connected with the power supply module through the massage switches.

7. The multi-functional lower limb bolster of claim 6 wherein: the lower limb pad is provided with guard plates on the left side and the right side of the binding surface and the supporting surface.

8. The multi-functional lower limb bolster of claim 7 wherein: the bottom of the lower limb pad is provided with a square convex block, the bottom plate is provided with a square groove corresponding to the square convex block, and the square convex block is connected with the square groove in a matched mode.

9. The multi-functional lower limb bolster of claim 1 wherein: a first restraint strap and a second restraint strap are respectively arranged on the left side and the right side of the joint of the binding surface and the supporting surface of the lower limb pad, one end of the first restraint strap is fixedly connected with the lower limb pad, and a first connecting piece is arranged at the other end of the first restraint strap; one end of the second restraint strap is fixedly connected with the lower limb pad, the other end of the second restraint strap is provided with a second connecting piece, and the first connecting piece and the second connecting piece are detachably connected; the first restraint strap with all be provided with infrared heating plate in the second restraint strap, infrared heating plate through the switch that generates heat with power module electric connection, the switch setting that generates heat is in the box body outside of control box.

10. The multi-functional lower limb bolster of claim 1 wherein: the control module is a single chip microcomputer module or a PLC module.

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