CN111184617A - Patella loosening device - Google Patents

Patella loosening device Download PDF

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Publication number
CN111184617A
CN111184617A CN202010168648.5A CN202010168648A CN111184617A CN 111184617 A CN111184617 A CN 111184617A CN 202010168648 A CN202010168648 A CN 202010168648A CN 111184617 A CN111184617 A CN 111184617A
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CN
China
Prior art keywords
screw rod
lifting
base
stepping
rotary table
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Pending
Application number
CN202010168648.5A
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Chinese (zh)
Inventor
徐超
许建文
袁丽秀
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First Affiliated Hospital of Guangxi Medical University
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First Affiliated Hospital of Guangxi Medical University
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
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Publication date
Application filed by First Affiliated Hospital of Guangxi Medical University filed Critical First Affiliated Hospital of Guangxi Medical University
Priority to CN202010168648.5A priority Critical patent/CN111184617A/en
Publication of CN111184617A publication Critical patent/CN111184617A/en
Pending legal-status Critical Current

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    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61H—PHYSICAL THERAPY APPARATUS, e.g. DEVICES FOR LOCATING OR STIMULATING REFLEX POINTS IN THE BODY; ARTIFICIAL RESPIRATION; MASSAGE; BATHING DEVICES FOR SPECIAL THERAPEUTIC OR HYGIENIC PURPOSES OR SPECIFIC PARTS OF THE BODY
    • A61H1/00—Apparatus for passive exercising; Vibrating apparatus; Chiropractic devices, e.g. body impacting devices, external devices for briefly extending or aligning unbroken bones
    • A61H1/006—Apparatus for applying pressure or blows for compressive stressing of a part of the skeletal structure, e.g. for preventing or alleviating osteoporosis
    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61H—PHYSICAL THERAPY APPARATUS, e.g. DEVICES FOR LOCATING OR STIMULATING REFLEX POINTS IN THE BODY; ARTIFICIAL RESPIRATION; MASSAGE; BATHING DEVICES FOR SPECIAL THERAPEUTIC OR HYGIENIC PURPOSES OR SPECIFIC PARTS OF THE BODY
    • A61H15/00—Massage by means of rollers, balls, e.g. inflatable, chains, or roller chains
    • A61H15/0078—Massage by means of rollers, balls, e.g. inflatable, chains, or roller chains power-driven
    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61H—PHYSICAL THERAPY APPARATUS, e.g. DEVICES FOR LOCATING OR STIMULATING REFLEX POINTS IN THE BODY; ARTIFICIAL RESPIRATION; MASSAGE; BATHING DEVICES FOR SPECIAL THERAPEUTIC OR HYGIENIC PURPOSES OR SPECIFIC PARTS OF THE BODY
    • A61H15/00—Massage by means of rollers, balls, e.g. inflatable, chains, or roller chains
    • A61H2015/0007—Massage by means of rollers, balls, e.g. inflatable, chains, or roller chains with balls or rollers rotating about their own axis
    • A61H2015/0014—Massage by means of rollers, balls, e.g. inflatable, chains, or roller chains with balls or rollers rotating about their own axis cylinder-like, i.e. rollers
    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61H—PHYSICAL THERAPY APPARATUS, e.g. DEVICES FOR LOCATING OR STIMULATING REFLEX POINTS IN THE BODY; ARTIFICIAL RESPIRATION; MASSAGE; BATHING DEVICES FOR SPECIAL THERAPEUTIC OR HYGIENIC PURPOSES OR SPECIFIC PARTS OF THE BODY
    • A61H2201/00—Characteristics of apparatus not provided for in the preceding codes
    • A61H2201/12—Driving means
    • A61H2201/1207—Driving means with electric or magnetic drive
    • A61H2201/123—Linear drive
    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61H—PHYSICAL THERAPY APPARATUS, e.g. DEVICES FOR LOCATING OR STIMULATING REFLEX POINTS IN THE BODY; ARTIFICIAL RESPIRATION; MASSAGE; BATHING DEVICES FOR SPECIAL THERAPEUTIC OR HYGIENIC PURPOSES OR SPECIFIC PARTS OF THE BODY
    • A61H2205/00—Devices for specific parts of the body
    • A61H2205/10—Leg
    • A61H2205/102—Knee
    • A61H2205/104—Patella

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  • Health & Medical Sciences (AREA)
  • Rehabilitation Therapy (AREA)
  • Epidemiology (AREA)
  • Pain & Pain Management (AREA)
  • Physical Education & Sports Medicine (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • Animal Behavior & Ethology (AREA)
  • General Health & Medical Sciences (AREA)
  • Public Health (AREA)
  • Veterinary Medicine (AREA)
  • Rheumatology (AREA)
  • Orthopedic Medicine & Surgery (AREA)
  • Rehabilitation Tools (AREA)

Abstract

The invention discloses a patella loosening device, which belongs to the technical field of rehabilitation tools and comprises a base, a lifting mechanism, a linear reciprocating driving mechanism, a clamping mechanism and a control box, wherein the lifting mechanism is arranged on the base; the lifting mechanism is used for adjusting the heights of the linear reciprocating driving mechanism and the clamping mechanism, the linear reciprocating driving mechanism is used for driving the clamping mechanism to do linear reciprocating motion, the clamping mechanism is used for clamping and fixing the patella of a patient, so that bone pushing training is conducted under the action of the linear reciprocating driving mechanism, and the control box is used for controlling the linear reciprocating driving mechanism to work; the linear reciprocating driving mechanism comprises a rotary table, a driving block and a stepping screw motor, the clamping mechanism comprises a connecting seat, two clamping plates and an adjusting screw rod, and the control box comprises a box body, and a controller, a stepping motor driver and a power supply device which are arranged in the box body; the invention solves the problems of labor waste and poor effect of manually pushing the patella by a patient in the prior art.

Description

Patella loosening device
Technical Field
The invention relates to the technical field of rehabilitation tools, in particular to a patella loosening device.
Background
After the knee joint operation, the patient is easy to have the condition that the patella mobility is obviously reduced due to the knee joint adhesion; the patella loosening operation is an effective treatment method for improving the patella mobility and the knee joint adhesion; therefore, after the knee joint operation, the patient often needs to adopt the patella loosening operation to perform rehabilitation training; however, in the prior art, a special patella loosening device is not provided, and a patient can only push the patella manually, so that the labor is wasted, and the effect is not good; some patients have to make a key operation and are easy to hurt soft tissues; therefore, it is necessary to provide a patella loosening device to solve the above problems.
Disclosure of Invention
In view of the above, there is a need to provide a patella loosening device for solving the problems of labor waste and poor effect of manually pushing the patella in the prior art.
In order to achieve the purpose, the technical scheme adopted by the invention is as follows:
a patella loosening device comprises a base, a lifting mechanism, a linear reciprocating driving mechanism, a clamping mechanism and a control box; the base is of a flat plate structure;
the lifting mechanism comprises a lifting plate, a lifting screw rod and a limiting rod; the lifting plate is arranged right above the base and is parallel to the base; the lifting screw rod and the limiting rod are arranged on the top surface of the base at intervals and are perpendicular to the top surface of the base; the bottom of the lifting screw rod is rotatably connected with the base, and the bottom of the limiting rod is fixedly connected with the base; the lifting screw rod is in threaded connection with the lifting plate, the limiting rod is in sliding connection with the lifting plate, and a manual knob is arranged at the top of the lifting screw rod;
the linear reciprocating driving mechanism comprises a turntable, a driving block and a stepping screw rod motor; the rotary table penetrates through the top surface and the bottom surface of the lifting plate and is in rotary connection with the lifting plate; the driving block is connected with the bottom surface of the rotary table in a sliding mode, and the sliding direction is the same as the diameter direction of the bottom surface of the rotary table; the stepping screw rod motor is fixedly arranged on the bottom surface of the rotary table, and a screw rod of the stepping screw rod motor is in threaded connection with the driving block and is used for driving the driving block to reciprocate;
the clamping mechanism comprises a connecting seat, two clamping plates and an adjusting screw rod; the connecting seat is arranged in parallel with the base, the top of the connecting seat is fixedly connected with the bottom of the driving block, the two clamping plates are arranged on the bottom surface of the connecting seat at intervals and are in sliding connection with the connecting seat, and the sliding direction is parallel to that of the driving block; the adjusting screw rod vertically penetrates through the upper ends of the two clamping plates and is respectively in threaded connection with the two clamping plates through two groups of external threads in opposite directions;
the control box comprises a box body, and a controller, a stepping motor driver and a power supply device which are arranged in the box body; the box body is fixedly arranged on the top surface of the rotary table, a switch is arranged on the outer side of the box body, the switch, the stepping motor driver and the power supply device are all electrically connected with the controller, and the power supply device and the stepping lead screw motor are all electrically connected with the stepping motor driver; the controller controls the stepping screw rod motor to rotate forwards and reversely through the stepping motor driver, and drives the driving block to move back and forth on the bottom surface of the turntable at a set speed and a set stroke.
Preferably, the patella loosening device further comprises a massage device; the massage device comprises a matching block, two assembling plates and a roller; the matching block is in a cuboid shape, and the width of the matching block is smaller than the maximum distance between the two clamping plates; the two assembling plates are respectively arranged on two opposite sides of the bottom surface of the matching block, two ends of the roller are respectively connected with the two assembling plates in a rotating mode through rotating shafts, and a silica gel sleeve is sleeved on the outer peripheral surface of the roller.
Preferably, the length of the roller is 8-12cm, the diameter of the roller is 3-4cm, and the thickness of the silica gel sleeve is 0.5-1.0 cm.
Preferably, the top surface of the base is provided with a supporting pad for a patient to place a knee joint, and the supporting pad is made of sponge.
Preferably, the lifting screw rod and the limiting rod are located on the same side of the top surface of the base.
Preferably, the lifting plate is in threaded connection with the lifting screw rod through a nut; the lifting plate is connected with the limiting rod in a sliding mode through a sliding sleeve.
Preferably, the cross section of the turntable is T-shaped, and a hand-screwed locking screw for locking the turntable on the lifting plate is arranged on the top surface of the turntable; the top surface border position of carousel seted up the screw hole, hand twist locking screw with screw hole threaded connection, hand twist locking screw accessible rotation with the top surface of lifter plate touches mutually.
Preferably, the bottom surface of the turntable is provided with two mounting blocks at intervals, the two mounting blocks are positioned at two ends of one diameter of the bottom surface of the turntable, and the driving block is arranged between the two mounting blocks; the main body of the stepping screw motor is fixedly connected with one mounting block, and a screw of the stepping screw motor penetrates through the two mounting blocks and is rotatably connected with the two mounting blocks through bearings.
Preferably, the side of the splint for contacting the human body is provided with a silica gel block.
Preferably, the controller is a single chip microcomputer, the power supply device is a switching power supply, a power line interface is arranged on the outer side of the box body, and the power line interface is electrically connected with the switching power supply.
Due to the adoption of the technical scheme, the invention has the following beneficial effects:
1. the invention is used for assisting a patient to carry out the patella loosening operation, thereby freeing the two hands of the patient and avoiding the problems of labor waste and poor effect caused by the manual patella pushing mode adopted by the patient; when the knee joint fixing device is used, a patient firstly places the knee joint on the base, and the patella is positioned right below the clamping mechanism; then, the manual knobs on the lifting screw rods are rotated to drive the lifting plate to descend to a proper position, so that the two clamping plates of the clamping mechanism are positioned on the two opposite sides of the patella; then, the distance between the two splints is adjusted by rotating an adjusting screw rod of the clamping mechanism, so that the two splints clamp the patella; finally, a switch is started, and the controller drives a stepping screw rod motor to move through a stepping motor driver and drives a clamping mechanism to linearly reciprocate so as to realize the function of pushing the patella; the invention has the function of adjusting the bone pushing direction, not only can realize the left and right patella pushing, but also can realize the front and back patella pushing; when the bone pushing direction needs to be changed, the turntable is only required to be rotated by 90 degrees, and the turntable rotates to drive the clamping mechanism to rotate, so that the relative directions of the two clamping plates and the patella are changed; the invention can effectively improve the enthusiasm of the patient for carrying out the patella loosening operation, thereby improving the rehabilitation speed of the knee joint.
2. When a patient needs to massage the patella, firstly, the matching block of the massage device is placed between the two clamping plates of the clamping mechanism, and then the matching block is clamped and fixed by rotating the adjusting screw rod; then, determining a bone pushing mode as pushing the patella forwards and backwards; then, the height of the lifting plate is adjusted, so that the massage device is lowered to a proper height, and the silica gel sleeve of the massage device is pressed on the patella; finally, starting a switch, driving the rolling shaft to roll back and forth by the clamping mechanism under the action of the linear reciprocating driving mechanism, and rolling the patella and the peripheral tissues thereof by the silica gel sleeve; the massage device has the function of softening the patella peripheral tissues, and further improves the rehabilitation effect of the knee joint postoperative patient.
3. The lifting mechanism and the clamping mechanism are manually adjusted, so that the manufacturing cost can be reduced, and the clamping height and the clamping tightness suitable for a patient can be conveniently adjusted by the patient, so that the lifting mechanism and the clamping mechanism have better comfort and avoid the condition that the patient is easily injured by mistake due to unskilled automatic adjustment; the height adjustment of the lifting mechanism and the tightness adjustment of the clamping mechanism both adopt a screw rod rotation adjustment mode, and the lifting mechanism is very simple to operate, can be operated by one hand and has good convenience.
4. According to the invention, the supporting pad arranged on the base and the silica gel pad arranged on the inner side of the splint can both play a good role in buffering a patient, so that the comfort level of the patient in the process of pushing the patella is improved.
5. According to the linear reciprocating driving mechanism, the driving block and the stepping screw rod motor are arranged on the turntable, and the turntable is rotationally connected with the lifting plate, so that a patient can conveniently adjust the bone pushing direction by rotating the turntable; in addition, the top surface of carousel is provided with and is used for screwing locking screw with the hand of carousel locking on the lifter plate, has improved the stability of carousel, avoids the carousel to appear the pivoted condition in step screw motor working process.
6. The linear reciprocating driving mechanism adopts a mode that the stepping screw rod motor rotates to drive the driving block and the clamping mechanism to linearly reciprocate, and has the advantages of accurate stroke control, high movement stability, stable speed and the like.
7. The medical nursing bed has the advantages of simple structure, convenience in use, low manufacturing cost, strong practicability, light weight, small size and the like, has better portability, can be suitable for different application environments, can bring great convenience to medical care personnel and patients, and has good popularization significance.
Drawings
Fig. 1 is a front view of a patella distractor provided in accordance with an embodiment of the present invention;
fig. 2 is a right side view of the patella distractor provided by embodiments of the present invention;
FIG. 3 is a schematic structural diagram of a linear reciprocating drive mechanism provided in an embodiment of the present invention;
FIG. 4 is a schematic view of a clamping mechanism used with a massage device according to an embodiment of the present invention;
fig. 5 is a schematic structural view of a massage device provided in an embodiment of the present invention;
fig. 6 is an electrical connection schematic diagram of a patella distractor provided in accordance with an embodiment of the present invention;
the main reference symbols in the drawings are as follows:
in the attached drawing, 1-base, 2-supporting pad, 3-lifting plate, 4-lifting screw rod, 5-limiting rod, 6-manual knob, 7-nut, 8-sliding sleeve, 9-rotating disc, 10-manual screw locking screw, 11-threaded hole, 12-driving block, 13-stepping screw rod motor, 14-mounting block, 15-connecting seat, 16-clamping plate, 17-silica gel block, 18-adjusting screw rod, 19-box body, 20-controller, 21-stepping motor driver, 22-power supply device, 23-switch, 24-power line interface, 25-massage device, 26-matching block, 27-assembling plate and 28-roller.
The following detailed description will further illustrate the invention in conjunction with the above-described figures.
Detailed Description
The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. The drawings are only for purposes of illustration and are not intended to be limiting, certain elements of the drawings may be omitted, enlarged or reduced to better illustrate the embodiments of the present invention, and do not represent the size of the actual product, and it is understood that some well-known structures, elements and descriptions thereof in the drawings may be omitted for persons skilled in the art.
In the description of the present invention, it should also be noted that, unless otherwise explicitly specified or limited, the terms "disposed" and "connected" are to be interpreted broadly, e.g., as a fixed connection, a detachable connection, or an integral connection; can be mechanically or electrically connected; they may be connected directly or indirectly through intervening media, or they may be interconnected between two elements. The specific meanings of the above terms in the present invention can be understood by those skilled in the art according to specific situations.
Examples
As shown in fig. 1-6, a patella loosening device comprises a base 1, a lifting mechanism, a linear reciprocating driving mechanism, a clamping mechanism and a control box. The base 1 serves as a carrier, the lifting mechanism is used for adjusting the height of the linear reciprocating driving mechanism and the clamping mechanism, the linear reciprocating driving mechanism is used for driving the clamping mechanism to perform linear reciprocating motion, the clamping mechanism is used for clamping and fixing the patella of a patient, so that bone pushing training is performed under the action of the linear reciprocating driving mechanism, and the control box is used for controlling the linear reciprocating driving mechanism to work.
The base 1 is a flat plate structure, and in this embodiment, the base 1 is made of an acrylic plate. The top surface of base 1 is provided with and is used for supplying the patient to place the supporting pad 2 of knee joint, and the material of supporting pad 2 is the sponge. Preferably, the top surface of the support pad 2 is concave arc-shaped.
The lifting mechanism comprises a lifting plate 3, a lifting screw rod 4 and a limiting rod 5. The lifting plate 3 is arranged right above the base 1 and is parallel to the base 1; the lifting screw rod 4 and the limiting rod 5 are arranged on the top surface of the base 1 at intervals and are perpendicular to the top surface of the base 1. The bottom of the lifting screw rod 4 is rotatably connected with the base 1, and the bottom of the limiting rod 5 is fixedly connected with the base 1. The lifting screw rod 4 is in threaded connection with the lifting plate 3, the limiting rod 5 is in sliding connection with the lifting plate 3, and the top of the lifting screw rod 4 is provided with a manual knob 6. When the manual knob 6 rotates, the lifting screw rod 4 is driven to rotate, and the lifting plate 3 cannot rotate along with the lifting screw rod 4 due to the limiting effect of the limiting rod 5 and only can perform linear lifting action. Wherein, the lifting screw rod 4 and the limiting rod 5 are positioned at the same side of the top surface of the base 1. Set up like this, when patient used, the knee joint can stretch into and place on supporting pad 2 from the relative one side of lift lead screw 4 and gag lever post 5, has better convenience. Lifter plate 3 passes through nut 7 and 4 threaded connection of lift lead screw, and lifter plate 3 further improves lifter plate 3's lift stability through sliding sleeve 8 and 5 sliding connection of gag lever post.
The linear reciprocating driving mechanism comprises a turntable 9, a driving block 12 and a stepping screw rod motor 13. The rotary table 9 penetrates the top and bottom surfaces of the lifting plate 3 and is rotatably connected with the lifting plate 3. Specifically, the cross section of the rotary table 9 is in a T shape, a hand-screwed locking screw 10 for locking the rotary table 9 on the lifting plate 3 is arranged on the top surface of the rotary table 9, a threaded hole 11 is formed in the edge position of the top surface of the rotary table 9, the hand-screwed locking screw 10 is in threaded connection with the threaded hole 11, and the hand-screwed locking screw 10 can be in contact with the top surface of the lifting plate 3 through rotation. When the rotary table 9 needs to be rotated, the hand-screwed locking screw 10 is loosened, and after the rotary table 9 is rotated in place, the hand-screwed locking screw 10 is tightened, so that the rotary table is very convenient. The driving block 12 is connected with the bottom surface of the rotary table 9 in a sliding manner, and the sliding direction is a diameter direction of the bottom surface of the rotary table 9. In this embodiment, a first sliding groove is formed in the bottom surface of the turntable 9, and a first sliding block is disposed at the top of the driving block 12 and is slidably connected to the first sliding groove through the first sliding block. The stepping screw rod motor 13 is fixedly arranged on the bottom surface of the rotary table 9, and a screw rod of the stepping screw rod motor is in threaded connection with the driving block 12 and is used for driving the driving block 12 to reciprocate. Specifically, two mounting blocks 14 are arranged on the bottom surface of the rotary table 9 at intervals, the two mounting blocks 14 are located at two ends of a diameter of the bottom surface of the rotary table 9, the driving block 12 is arranged between the two mounting blocks 14, a main body of the stepping screw motor 13 is fixedly connected with one mounting block 14, and a screw of the stepping screw motor 13 penetrates through the two mounting blocks 14 and is rotatably connected with the two mounting blocks 14 through a bearing.
According to the linear reciprocating driving mechanism, the driving block 12 and the stepping screw rod motor 13 are arranged on the rotary table 9, and the rotary table 9 is rotatably connected with the lifting plate 3, so that a patient can conveniently adjust the bone pushing direction by rotating the rotary table 9; in addition, the top surface of carousel 9 is provided with and is used for screwing locking screw 10 with the hand of carousel 9 on lifter plate 3, has improved the stability of carousel 9, avoids carousel 9 to appear the pivoted condition in step screw motor 13 working process.
The clamping mechanism comprises a connecting seat 15, two clamping plates 16 and an adjusting screw 18. The connecting seat 15 is arranged parallel to the base 1, the top of the connecting seat 15 is fixedly connected with the bottom of the driving block 12, the two clamping plates 16 are arranged on the bottom surface of the connecting seat 15 at intervals and are connected with the connecting seat 15 in a sliding mode, and the sliding direction is parallel to the sliding direction of the driving block 12. In this embodiment, the bottom surface of the connecting seat 15 is provided with a second sliding groove, and the top of the clamping plate 16 is provided with a second sliding block, and is slidably connected with the second sliding groove through the second sliding block. The adjusting screw 18 vertically penetrates the upper ends of the two clamping plates 16 and is respectively in threaded connection with the two clamping plates 16 through two sets of external threads in opposite directions. An adjusting knob is arranged at one end of the adjusting screw 18, and when the adjusting knob rotates, the adjusting screw 18 is driven to rotate, so that the two clamping plates 16 are driven to approach or move away from each other. In addition, the side of the splint 16 for contacting the human body is provided with a silica gel block 17, which improves the comfort of the patient.
The lifting mechanism and the clamping mechanism are manually adjusted, so that the manufacturing cost can be reduced, and the clamping height and the clamping tightness suitable for a patient can be conveniently adjusted by the patient, so that the lifting mechanism and the clamping mechanism have better comfort and avoid the condition that the patient is easily injured by mistake due to unskilled automatic adjustment; the height adjustment of the lifting mechanism and the tightness adjustment of the clamping mechanism both adopt a screw rod rotation adjustment mode, and the lifting mechanism is very simple to operate, can be operated by one hand and has good convenience.
The control box comprises a box body 19, and a controller 20, a stepping motor driver 21 and a power supply device 22 which are arranged in the box body 19. The box body 19 is fixedly installed on the top surface of the rotating disc 9, a switch 23 is arranged on the outer side of the box body 19, the switch 23, the stepping motor driver 21 and the power supply device 22 are all electrically connected with the controller 20, and the power supply device 22 and the stepping screw rod motor 13 are all electrically connected with the stepping motor driver 21. The controller 20 controls the stepping screw motor 13 to rotate forward and backward through the stepping motor driver 21, and drives the driving block 12 to reciprocate on the bottom surface of the turntable 9 at a set speed and a set stroke. In this embodiment, the controller 20 is a single chip microcomputer, the power supply device 22 is a switch 23 power supply, a power line interface 24 is disposed on the outer side of the box 19, and the power line interface 24 is electrically connected to the switch 23 power supply. The switch 23 power supply is provided with two sets of outputs, one of which outputs a voltage of 5Vdc for use by the controller 20, and the other of which outputs a voltage of 24Vdc for use by the stepper motor driver 21 and the stepper screw motor 13.
The step motor driver 21 is an actuator for converting an electric pulse into an angular displacement, and when the step motor driver receives a pulse signal, the step motor driver drives the step motor to rotate by a fixed angle (called a "step angle") in a set direction, and the step motor driver rotates by one step at the fixed angle; therefore, the angular displacement can be controlled by controlling the number of pulses, so that the aim of accurate positioning is fulfilled; meanwhile, the rotating speed and the rotating acceleration of the motor can be controlled by controlling the pulse frequency, so that the purposes of speed regulation and positioning are achieved. In the present invention, the driving block 12 is driven by the stepping screw motor 13 to move a set stroke at a set speed, which belongs to the prior art, and the control principle and corresponding connection circuit among the controller 20, the stepping motor driver 21 and the stepping screw motor 13 are not elaborated in this specification. In order to improve the accuracy of the stroke control, a positive limit switch 23 and a negative limit switch 23 can be arranged on the bottom surface of the rotary table 9, the stroke of the driving block 12 is accurately positioned, and the arrangement of the positive limit switch 23 and the negative limit switch 23 also belongs to the conventional prior art. In this embodiment, the starting position (i.e. the origin position) of the driving block 12 is located in the middle of the screw rod of the stepping screw rod motor 13, and the displacements of the driving block 12 moving towards the two ends of the screw rod relative to the starting position are both set to be 1cm, so as to avoid the situation that the patella is damaged due to too large displacement.
The patella loosening device further comprises a massage device 25, wherein the massage device 25 comprises a fitting block 26, two fitting plates 27 and a roller 28. The matching block 26 is in the shape of a cuboid, the width of which is less than the maximum distance between the two clamping plates 16; the two assembling plates 27 are respectively arranged on two opposite sides of the bottom surface of the matching block 26, two ends of the roller 28 are respectively rotatably connected with the two assembling plates 27 through rotating shafts, and the outer peripheral surface of the roller 28 is sleeved with a silica gel sleeve. Wherein, the length of the roller 28 is 8-12cm, the diameter is 3-4cm, and the thickness of the silica gel sleeve is 0.5-1.0 cm. In this embodiment, the length of the roller 28 is 10cm, the diameter is 3.5cm, and the thickness of the silica gel sleeve is 0.8 cm. When the patient needs to massage the patella, firstly, the matching block 26 of the massage device 25 is placed between the two clamping plates 16 of the clamping mechanism, and then the matching block 26 is clamped and fixed by rotating the adjusting screw 18; then, determining a bone pushing mode as pushing the patella forwards and backwards; then, the height of the lifting plate 3 is adjusted, so that the massage device 25 descends to a proper height, and the silica gel of the massage device 25 is sleeved and pressed on the patella; finally, the switch 23 is started, the clamping mechanism drives the rolling shaft to roll back and forth under the action of the linear reciprocating driving mechanism, and the silica gel sleeve rolls the patella and the peripheral tissues thereof; the massage device 25 of the invention has the function of softening the patella peripheral tissues, and further improves the rehabilitation effect of the knee joint postoperative patient.
When the knee joint fixator is used, a patient firstly places the knee joint on the base 1, and the patella is positioned right below the clamping mechanism; then, the manual knob 6 on the lifting screw rod 4 is rotated to drive the lifting plate 3 to descend to a proper position, so that the two clamping plates 16 of the clamping mechanism are positioned at the two opposite sides of the patella; then, the distance between the two splints 16 is adjusted by rotating the adjusting screw 18 of the clamping mechanism, so that the two splints 16 clamp the patella; finally, the switch 23 is started, and the controller 20 drives the stepping screw motor 13 to move through the stepping motor driver 21, so as to drive the clamping mechanism to linearly reciprocate, thereby realizing the function of pushing the patella. The invention has the function of adjusting the bone pushing direction, not only can realize the left and right patella pushing, but also can realize the front and back patella pushing; when the bone pushing direction needs to be changed, the rotating disc 9 only needs to be rotated by 90 degrees, and the rotating disc 9 rotates to drive the clamping mechanism to rotate, so that the relative directions of the two clamping plates 16 and the patella are changed. The invention can effectively improve the enthusiasm of the patient for carrying out the patella loosening operation, thereby improving the rehabilitation speed of the knee joint.
The invention is used for assisting a patient to carry out the patella loosening operation, thereby freeing the two hands of the patient and avoiding the problems of labor waste and poor effect caused by the manual patella pushing mode adopted by the patient; the medical nursing bed has the advantages of simple structure, convenience in use, low manufacturing cost, strong practicability, light weight, small size and the like, has better portability, can be suitable for different application environments, can bring great convenience to medical care personnel and patients, and has good popularization significance.
The above description is intended to describe in detail the preferred embodiments of the present invention, but the embodiments are not intended to limit the scope of the claims of the present invention, and all equivalent changes and modifications made within the technical spirit of the present invention should fall within the scope of the claims of the present invention.

Claims (10)

1. The utility model provides a patella loosening device, includes the base, the base is dull and stereotyped structure, its characterized in that: the device also comprises a lifting mechanism, a linear reciprocating driving mechanism, a clamping mechanism and a control box;
the lifting mechanism comprises a lifting plate, a lifting screw rod and a limiting rod; the lifting plate is arranged right above the base and is parallel to the base; the lifting screw rod and the limiting rod are arranged on the top surface of the base at intervals and are perpendicular to the top surface of the base; the bottom of the lifting screw rod is rotatably connected with the base, and the bottom of the limiting rod is fixedly connected with the base; the lifting screw rod is in threaded connection with the lifting plate, the limiting rod is in sliding connection with the lifting plate, and a manual knob is arranged at the top of the lifting screw rod;
the linear reciprocating driving mechanism comprises a turntable, a driving block and a stepping screw rod motor; the rotary table penetrates through the top surface and the bottom surface of the lifting plate and is in rotary connection with the lifting plate; the driving block is connected with the bottom surface of the rotary table in a sliding mode, and the sliding direction is the same as the diameter direction of the bottom surface of the rotary table; the stepping screw rod motor is fixedly arranged on the bottom surface of the rotary table, and a screw rod of the stepping screw rod motor is in threaded connection with the driving block and is used for driving the driving block to reciprocate;
the clamping mechanism comprises a connecting seat, two clamping plates and an adjusting screw rod; the connecting seat is arranged in parallel with the base, the top of the connecting seat is fixedly connected with the bottom of the driving block, the two clamping plates are arranged on the bottom surface of the connecting seat at intervals and are in sliding connection with the connecting seat, and the sliding direction is parallel to that of the driving block; the adjusting screw rod vertically penetrates through the upper ends of the two clamping plates and is respectively in threaded connection with the two clamping plates through two groups of external threads in opposite directions;
the control box comprises a box body, and a controller, a stepping motor driver and a power supply device which are arranged in the box body; the box body is fixedly arranged on the top surface of the rotary table, a switch is arranged on the outer side of the box body, the switch, the stepping motor driver and the power supply device are all electrically connected with the controller, and the power supply device and the stepping lead screw motor are all electrically connected with the stepping motor driver; the controller controls the stepping screw rod motor to rotate forwards and reversely through the stepping motor driver, and drives the driving block to move back and forth on the bottom surface of the turntable at a set speed and a set stroke.
2. The patellar distractor of claim 1, wherein: the patella loosening device also comprises a massage device; the massage device comprises a matching block, two assembling plates and a roller; the matching block is in a cuboid shape, and the width of the matching block is smaller than the maximum distance between the two clamping plates; the two assembling plates are respectively arranged on two opposite sides of the bottom surface of the matching block, two ends of the roller are respectively connected with the two assembling plates in a rotating mode through rotating shafts, and a silica gel sleeve is sleeved on the outer peripheral surface of the roller.
3. The patellar distractor of claim 1, wherein: the length of the roller is 8-12cm, the diameter of the roller is 3-4cm, and the thickness of the silica gel sleeve is 0.5-1.0 cm.
4. The patellar distractor of claim 1, wherein: the top surface of base is provided with the supporting pad that is used for supplying the patient to place the knee joint, the material of supporting pad is the sponge.
5. The patellar distractor of claim 1, wherein: the lifting screw rod and the limiting rod are located on the same side of the top surface of the base.
6. The patellar distractor of claim 5, wherein: the lifting plate is in threaded connection with the lifting screw rod through a nut; the lifting plate is connected with the limiting rod in a sliding mode through a sliding sleeve.
7. The patellar distractor of claim 1, wherein: the cross section of the rotary table is T-shaped, and a hand-screwed locking screw for locking the rotary table on the lifting plate is arranged on the top surface of the rotary table; the top surface border position of carousel seted up the screw hole, hand twist locking screw with screw hole threaded connection, hand twist locking screw accessible rotation with the top surface of lifter plate touches mutually.
8. The patellar distractor of claim 1, wherein: the bottom surface of the rotary table is provided with two mounting blocks at intervals, the two mounting blocks are positioned at two ends of one diameter of the bottom surface of the rotary table, and the driving block is arranged between the two mounting blocks; the main body of the stepping screw motor is fixedly connected with one mounting block, and a screw of the stepping screw motor penetrates through the two mounting blocks and is rotatably connected with the two mounting blocks through bearings.
9. The patellar distractor of claim 1, wherein: one side of the splint, which is used for contacting the human body, is provided with a silica gel block.
10. The patellar distractor of claim 1, wherein: the controller is the singlechip, power supply unit is switching power supply, the outside of box body is provided with the power cord interface, the power cord interface with switching power supply electric connection.
CN202010168648.5A 2020-03-12 2020-03-12 Patella loosening device Pending CN111184617A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN202010168648.5A CN111184617A (en) 2020-03-12 2020-03-12 Patella loosening device

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CN202010168648.5A CN111184617A (en) 2020-03-12 2020-03-12 Patella loosening device

Publications (1)

Publication Number Publication Date
CN111184617A true CN111184617A (en) 2020-05-22

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Family Applications (1)

Application Number Title Priority Date Filing Date
CN202010168648.5A Pending CN111184617A (en) 2020-03-12 2020-03-12 Patella loosening device

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Country Link
CN (1) CN111184617A (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN112386443A (en) * 2020-11-13 2021-02-23 河南大学淮河医院 Be applied to intensive care unit's supplementary rehabilitation device

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN112386443A (en) * 2020-11-13 2021-02-23 河南大学淮河医院 Be applied to intensive care unit's supplementary rehabilitation device

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