CN113648118B - Three-dimensional traction device for knee joint - Google Patents
Three-dimensional traction device for knee joint Download PDFInfo
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- CN113648118B CN113648118B CN202111069268.7A CN202111069268A CN113648118B CN 113648118 B CN113648118 B CN 113648118B CN 202111069268 A CN202111069268 A CN 202111069268A CN 113648118 B CN113648118 B CN 113648118B
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- pushing
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- output shaft
- grabbing
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- 210000000629 knee joint Anatomy 0.000 title claims abstract description 36
- 210000004417 patella Anatomy 0.000 claims abstract description 52
- 210000000689 upper leg Anatomy 0.000 claims abstract description 41
- 210000001699 lower leg Anatomy 0.000 claims abstract description 26
- 210000003414 extremity Anatomy 0.000 claims abstract description 15
- 210000002414 leg Anatomy 0.000 claims abstract description 11
- 210000000078 claw Anatomy 0.000 claims description 62
- 210000000988 bone and bone Anatomy 0.000 claims description 44
- 230000000694 effects Effects 0.000 abstract description 10
- 210000003127 knee Anatomy 0.000 abstract description 5
- 230000003750 conditioning effect Effects 0.000 description 6
- 244000309466 calf Species 0.000 description 5
- 238000006243 chemical reaction Methods 0.000 description 3
- 238000009434 installation Methods 0.000 description 3
- 230000000149 penetrating effect Effects 0.000 description 3
- 208000034656 Contusions Diseases 0.000 description 2
- 208000034526 bruise Diseases 0.000 description 2
- 238000010586 diagram Methods 0.000 description 2
- 238000006467 substitution reaction Methods 0.000 description 2
- 210000002303 tibia Anatomy 0.000 description 2
- 238000004804 winding Methods 0.000 description 2
- 206010023204 Joint dislocation Diseases 0.000 description 1
- 210000001015 abdomen Anatomy 0.000 description 1
- 230000006978 adaptation Effects 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000035622 drinking Effects 0.000 description 1
- 239000004744 fabric Substances 0.000 description 1
- 239000006260 foam Substances 0.000 description 1
- 210000003407 lower extremity of femur Anatomy 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000000554 physical therapy Methods 0.000 description 1
- 229920001296 polysiloxane Polymers 0.000 description 1
- 238000007781 pre-processing Methods 0.000 description 1
- 230000000007 visual effect Effects 0.000 description 1
Classifications
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- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61F—FILTERS IMPLANTABLE INTO BLOOD VESSELS; PROSTHESES; DEVICES PROVIDING PATENCY TO, OR PREVENTING COLLAPSING OF, TUBULAR STRUCTURES OF THE BODY, e.g. STENTS; ORTHOPAEDIC, NURSING OR CONTRACEPTIVE DEVICES; FOMENTATION; TREATMENT OR PROTECTION OF EYES OR EARS; BANDAGES, DRESSINGS OR ABSORBENT PADS; FIRST-AID KITS
- A61F5/00—Orthopaedic methods or devices for non-surgical treatment of bones or joints; Nursing devices; Anti-rape devices
- A61F5/01—Orthopaedic devices, e.g. splints, casts or braces
- A61F5/04—Devices for stretching or reducing fractured limbs; Devices for distractions; Splints
- A61F5/042—Devices for stretching or reducing fractured limbs; Devices for distractions; Splints for extension or stretching
-
- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61F—FILTERS IMPLANTABLE INTO BLOOD VESSELS; PROSTHESES; DEVICES PROVIDING PATENCY TO, OR PREVENTING COLLAPSING OF, TUBULAR STRUCTURES OF THE BODY, e.g. STENTS; ORTHOPAEDIC, NURSING OR CONTRACEPTIVE DEVICES; FOMENTATION; TREATMENT OR PROTECTION OF EYES OR EARS; BANDAGES, DRESSINGS OR ABSORBENT PADS; FIRST-AID KITS
- A61F5/00—Orthopaedic methods or devices for non-surgical treatment of bones or joints; Nursing devices; Anti-rape devices
- A61F5/01—Orthopaedic devices, e.g. splints, casts or braces
- A61F5/0102—Orthopaedic devices, e.g. splints, casts or braces specially adapted for correcting deformities of the limbs or for supporting them; Ortheses, e.g. with articulations
- A61F5/0123—Orthopaedic devices, e.g. splints, casts or braces specially adapted for correcting deformities of the limbs or for supporting them; Ortheses, e.g. with articulations for the knees
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- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61F—FILTERS IMPLANTABLE INTO BLOOD VESSELS; PROSTHESES; DEVICES PROVIDING PATENCY TO, OR PREVENTING COLLAPSING OF, TUBULAR STRUCTURES OF THE BODY, e.g. STENTS; ORTHOPAEDIC, NURSING OR CONTRACEPTIVE DEVICES; FOMENTATION; TREATMENT OR PROTECTION OF EYES OR EARS; BANDAGES, DRESSINGS OR ABSORBENT PADS; FIRST-AID KITS
- A61F5/00—Orthopaedic methods or devices for non-surgical treatment of bones or joints; Nursing devices; Anti-rape devices
- A61F5/01—Orthopaedic devices, e.g. splints, casts or braces
- A61F5/0102—Orthopaedic devices, e.g. splints, casts or braces specially adapted for correcting deformities of the limbs or for supporting them; Ortheses, e.g. with articulations
- A61F2005/0188—Orthopaedic devices, e.g. splints, casts or braces specially adapted for correcting deformities of the limbs or for supporting them; Ortheses, e.g. with articulations having pressure sensors
Abstract
The invention provides a knee joint three-dimensional traction device, which relates to the technical field of medical equipment and comprises mounting seats arranged on two sides of a patient limb, leg supports arranged below the mounting seats and padded behind the patient limb, and pushing components, traction components and grabbing components which are arranged on the mounting seats and act on knee joints at the same time; wherein, the traction component simultaneously pulls the thigh far end upwards and the shank near end downwards, the pushing component pushes the knee joint in the medial-lateral direction, and the grabbing component grabs the patella forwards; the invention can simultaneously draw the knee joint in the thigh and thigh direction, the internal and external direction of the knee and the forward traction (patella) direction, thereby being convenient for medical staff; the comfort level of the patient can be improved on the premise of ensuring stability; can continuously act on knee joints, and has good rehabilitation effect.
Description
Technical Field
The invention relates to the technical field of medical equipment, in particular to a knee joint three-dimensional traction device.
Background
Patella, commonly known as patella, is often dislocated due to the rotation or overstretching of the patella caused by strong direct bruise striking the upper end of the tibia or intermittent bruise. Aiming at patella dislocation, the prior clinic mainly adopts massage of medical staff to carry out manual reposition. The knee joint (comprising the patella, the lower end of the femur and the upper end of the tibia) is manually massaged by medical staff in the mode, so that time and labor are wasted, and the efficiency is low; and acts on the patella intermittently in time, so that the rehabilitation effect is poor.
Disclosure of Invention
The invention provides a knee joint three-dimensional traction device which can simultaneously draw the knee joint in the thigh and thigh direction, the internal and external direction of the knee and the forward traction (patella) direction, thereby being convenient for medical staff; can continuously act on knee joints, and has good rehabilitation effect.
The invention provides a knee joint three-dimensional traction device which comprises mounting seats arranged on two sides of a patient limb, leg supports arranged below the mounting seats and padded behind the patient limb, pushing components, traction components and grabbing components, wherein the pushing components, the traction components and the grabbing components are arranged on the mounting seats and act on the knee joint at the same time; the traction component simultaneously pulls the thigh far end upwards and the shank near end downwards, the pushing component pushes the knee joint in the medial-lateral direction, and the grabbing component grabs and lifts the patella forwards.
In an alternative embodiment, the gripping member comprises an outer sleeve, a fixation assembly, a plurality of bone-gripping claws, a connecting post, and a rotating barrel; the outer sleeve is arranged on the mounting seat, the fixing component is arranged at the bottom of the outer sleeve, one ends of the plurality of bone grabbing claws are fixed on the fixing component, and the other ends of the plurality of bone grabbing claws penetrate out of the outer sleeve from the bottom of the outer sleeve; the rotary drum is positioned above the fixed assembly, the top end of the connecting column is fixedly connected with the bottom end of the rotary drum, and the bottom end of the connecting column is connected with the fixed assembly; the rotary drum is in threaded connection with the upper part of the outer sleeve.
In an alternative embodiment, the fixing assembly comprises an inner sleeve and a fixing disc, the inner sleeve is arranged below the inner sleeve inner rotary drum, and the bottom end of the connecting column is connected with the top end of the inner sleeve; the fixed disc is arranged at the bottom of the inner sleeve; one end of each bone grabbing claw is fixed on the fixing disc, and the other ends of the bone grabbing claws sequentially penetrate out of the bottoms of the inner sleeve and the outer sleeve.
In an alternative embodiment, the grabbing member further comprises a multi-dimensional force sensor and a display module, wherein the multi-dimensional force sensor is installed at the bottom of the inner sleeve, and the multi-dimensional force sensor is abutted with the bottom surface of the fixed disc; and the data output end of the multidimensional force sensor is connected with the display module.
In an alternative embodiment, the top end of the rotary drum is fixedly connected with a first handle, and the bottom end of the outer sleeve is also fixedly connected with a plurality of supporting claws respectively.
In an alternative embodiment, the grabbing member further comprises a support frame base and an L-shaped support frame, wherein the support frame base is fixed on the mounting seat, and the bottom end of the support frame is rotationally connected with the support frame base; the top end of the supporting frame is detachably connected with the outer sleeve.
In an alternative embodiment, the traction member comprises a thigh strap tied at the distal end of the thigh, a shank strap tied at the proximal end of the shank, and a rotating shaft, a first connecting belt and a second connecting belt which are symmetrically arranged at two sides of the mounting seat respectively; at least one first gear which rotates by taking the rotating shaft as an axle center is fixed on the rotating shaft; one side of the first connecting belt is fixedly connected with the thigh strap, one end of the first connecting belt is connected with the first support column, and a third gear meshed with the first gear is arranged at the other end of the first connecting belt; one side of the second connecting belt is fixedly connected with the shank strap, one end of the second connecting belt is connected with the second supporting column, and a second gear meshed with the first gear is arranged at the other end of the second connecting belt; the first support columns and the second support columns are respectively fixed at two ends of the mounting base.
In an alternative embodiment, a second handle which is convenient for rotating the rotating shaft is fixed at the top end of the rotating shaft, and a scale corresponding to the pulling force is arranged outside the second handle.
In an alternative embodiment, the pushing component comprises a thigh pushing hammer and a shank pushing hammer which are symmetrically arranged at corresponding positions of the knee joint on the mounting seat; the patella pushing hammer is characterized in that the thigh pushing hammer is located below the patella pushing hammer, the thigh pushing hammer comprises a third handle, a first output shaft with external threads and a first pushing hammer which are sequentially connected, the patella pushing hammer comprises a fourth handle, a second output shaft with external threads and a second pushing hammer which are sequentially connected, and a lower pipe in threaded connection with the first output shaft and an upper pipe matched with the second output shaft are respectively fixed on the mounting seat.
In an alternative embodiment, a first pressure sensor and a second pressure sensor are respectively installed on the first pushing hammer and the second pushing hammer, and a display for respectively displaying a first pressure value measured by the first pressure sensor and a second pressure value measured by the second pressure sensor is installed on the installation seat.
The beneficial effects of the invention are as follows: the pushing component is arranged, so that the far end of the thigh can be pulled upwards, and the near end of the shank can be pulled downwards, and the traction in the thigh and shank directions can be realized; the pushing component is arranged, so that the knee joint can be pushed in the inner-outer direction, and traction in the inner-outer direction of the knee is realized; a grabbing component is arranged and can grab the patella forwards; the three components can continuously act on the knee joint at the same time, thereby being convenient for medical staff and improving the rehabilitation effect.
Additional features and advantages of the invention will be set forth in the description which follows, and in part will be obvious from the description, or may be learned by practice of the invention. The objectives and other advantages of the invention will be realized and attained by the structure particularly pointed out in the written description and drawings.
In order to make the above objects, features and advantages of the present invention more comprehensible, preferred embodiments accompanied with figures are described in detail below.
Drawings
In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings that are needed in the description of the embodiments or the prior art will be briefly described, and it is obvious that the drawings in the description below are some embodiments of the present invention, and other drawings can be obtained according to the drawings without inventive effort for a person skilled in the art.
FIG. 1 is a schematic diagram of the structure of the present invention;
FIG. 2 is a schematic cross-sectional view of A-A of FIG. 1;
FIG. 3 is a schematic cross-sectional view of B-B of FIG. 2;
FIG. 4 is a schematic view of the structure of the gripping member of the present invention;
FIG. 5 is another schematic structural view of the gripping member of the present invention;
FIG. 6 is a schematic view of a mounting base according to the present invention;
FIG. 7 is a schematic view of the structure of the thigh-calf pushing hammer of the present invention;
fig. 8 is a system schematic diagram of the present invention.
In the figure: 101-an outer sleeve; 102-a drum; 103-a multi-dimensional force sensor; 104-a fixed disk; 105-an inner sleeve; 106-connecting columns; 107-bone claw; 108-supporting claws; 109-a first handle; 110-a nut; 111-a support frame base; 112-a support frame; 210-a rotating shaft; 211-fixing seats; 212-a second handle; 213-a first gear; 221-shank strap; 222-a second connecting strap; 223-second support columns; 224-a second connecting column; 225-a second gear; 226-sixth handle; 231-thigh strap; 232-a first connecting strap; 233-first support columns; 234-a first connection post; 235-a third gear; 236-a fifth handle; 311-a second output shaft; 312-a second push hammer; 313-fourth handle; 321-a first output shaft; 322-first push hammer; 323-a third handle; 40-mounting seats; 401-a first sliding slit; 402-a second sliding slit; 403-upper tube; 404-down tube; 50-leg rest; 501-main pad; 502-elastic bands; 601-LCD display screen; 602-a key module.
Detailed Description
For the purpose of making the objects, technical solutions and advantages of the embodiments of the present invention more apparent, the technical solutions of the present invention will be clearly and completely described below with reference to the accompanying drawings, and it is apparent that the described embodiments are some embodiments of the present invention, but not all embodiments. All other embodiments, which can be made by those skilled in the art based on the embodiments of the invention without making any inventive effort, are intended to be within the scope of the invention.
In order to facilitate understanding of the present embodiment, a three-dimensional traction device for knee joint disclosed in the present invention will be described in detail by way of examples.
Referring to fig. 1, the present embodiment provides a three-dimensional traction apparatus for knee joint, comprising a mounting seat 40 mounted on both sides of a patient's limb, a leg rest 50 mounted below the mounting seat 40 and padded behind the patient's limb, and a pushing member, a traction member and a grasping member mounted on the mounting seat 40 and acting on the knee joint at the same time; wherein, the traction component simultaneously pulls the thigh distal end upwards and the shank proximal end downwards, the pushing component pushes the knee joint in the medial-lateral direction, and the grabbing component grabs the patella forward.
In practice, the patient lies on the patient bed, the mounting seat 40 is placed or fixed on the patient bed, and the affected limb is placed on the upper surface of the leg rest 50. As shown in fig. 2, the leg rest 50 includes a main pad 501 and a plurality of elastic bands 502. The main pad 501 may be a rectangular pad composed of woven cloth and a foam pad, so as to ensure comfort during use. The edge of the main pad 501 is fixedly connected with the mounting seat 40 through a plurality of elastic bands 502, and the elastic bands 502 have elasticity and can meet the placement of the affected limbs with different thicknesses.
The mount 40 is mounted on either side of the affected limb and the leg rest 50 is padded "behind" the affected limb, where "behind" is an anatomical orientation term, namely: the upper part near the head, the lower part near the foot, the front part near the abdomen side, the back part near the back side, the inner part near the middle surface of the body, the outer part far from the middle surface of the body, the proximal part near the trunk part of the limbs, and the distal part far from the trunk part of the limbs. The pushing component pushes the knee joint in the medial-lateral direction, and the grabbing component grabs the patella in the anterior direction, which is based on anatomical azimuth terms.
A tube with internal threads (refer to a lower tube 404 in fig. 2 and 3) is fixed on the side wall of the mounting seat 40, a pushing hammer matched with the shape of the side surface of the knee joint is arranged at the top end of the pushing component, external threads matched with the internal threads are further arranged on the pushing component, and the pushing component is rotated to realize the forward movement of the pushing component, so that the pushing hammer pushes the knee joint. The patella pushing hammer which is matched with the side face of the patella and the thigh pushing hammer which is matched with the knee joint at the junction of the thigh and the thigh can be arranged on two sides of the knee joint, and when the knee joint is used, the patella pushing hammer and the thigh pushing hammer can move relatively, so that traction of the inner side and the outer side of the knee joint is realized.
The pulling member is used to achieve simultaneous pulling up of the distal thigh and pulling down of the proximal calf, both distal and proximal being anatomical terms. The traction member respectively binds the thigh far end and the shank near end through the binding bands and connects the connecting rod between the rotating shaft 210 and the binding bands, and the rotating shaft 210 is meshed with the connecting rod to realize the movement of the connecting rod, so that the movement of the binding bands connected with the connecting rod is realized, and the traction in the thigh and shank directions is realized.
The grabbing component comprises an outer sleeve, a fixing component, a plurality of grabbing bone claws, a connecting column and a rotating drum, wherein the grabbing bone claws of the embodiment are soft and powerful, can fasten the patella and can pull and stretch the patella forwards ("front" is an anatomical azimuth term); the outer sleeve is in threaded connection with the rotary drum, the rotary drum can ascend or descend relative to the outer sleeve, and meanwhile the rotary drum is connected with the bone grabbing claw through the fixing disc, so that the rotary drum drives the bone grabbing claw to ascend or descend.
The patella of the knee joint can be pulled, so that medical staff is facilitated; can continuously act on the patella, and has good rehabilitation effect; simple structure, convenient operation, labour saving and time saving.
Referring to fig. 1 and 4, the gripping member includes an outer sleeve 101, a fixation assembly, a plurality of bone-gripping claws 107, a connecting post 106, and a rotating cylinder 102; the outer sleeve 101 is mounted on the mounting seat 40, the fixing assembly is mounted at the bottom of the outer sleeve 101, one end of the plurality of bone grabbing claws 107 is fixed on the fixing assembly, and the other ends of the plurality of bone grabbing claws 107 penetrate out of the outer sleeve 101 from the bottom of the outer sleeve 101; the rotary drum 102 is positioned above the fixed assembly, the top end of the connecting column 106 is fixedly connected with the bottom end of the rotary drum 102, and the bottom end of the connecting column 106 is connected with the fixed assembly; drum 102 is threadedly coupled to the upper portion of outer sleeve 101.
Specifically, the bone grabbing claw 107 is used for grabbing the patella, the fixing component is used for fixing the bone grabbing claw 107, and the connecting post 106 is used for connecting the fixing component and the rotary drum 102 respectively. The rotary drum 102 is provided with external threads, and the upper part of the outer sleeve 101 connected with the rotary drum is provided with internal threads; thus, rotating the drum 102, the drum 102 will be raised or lowered relative to the outer sleeve 101; meanwhile, if the drum 102 ascends, the connecting column 106, the fixing component and the bone grabbing claws 107 on the fixing component are driven to ascend together, so that the patella is lifted.
In order to avoid rotation of the drum 102, the bone grabbing claws 107 also rotate, and the bottom ends of the connecting posts 106 are in non-fixed connection, namely movable connection, with the fixed components.
The plurality of bone-grabbing claws 107 in fig. 4 may be provided with a non-slip assembly at the distal end, for example, the contact end of the bone-grabbing claws 107 with the skin may be provided as a silicone pad with a non-slip texture.
The other ends of the plurality of bone grabbing claws 107 penetrate out of the outer sleeve 101 from the bottom of the outer sleeve 101, and the tail ends of the penetrated bone grabbing claws are used for grabbing the patella; the bottom of the outer sleeve 101 is provided with a penetrating hole or a penetrating seam, so that the bone grabbing claw 107 can conveniently penetrate out; i.e. the bottom of outer sleeve 101 may be arranged in a grid with through holes or in a diagonal with through slits. The bone claw 107 of the present embodiment can perform stretching in the front-rear direction (thigh and shank directions), stretching in the medial-lateral direction (knee medial-lateral direction), and stretching in the up-down direction.
The bone grabbing claw 107 of the embodiment is soft and powerful, can fasten the patella, and can drag and stretch the patella in multiple directions; the provided rotary drum 102 can lift the bone grabbing claw 107 upwards, so that grabbing force is increased; the patella traction device can traction patella, and is convenient for medical staff; compared with the massage by the manipulation, the device of the embodiment can continuously act on the patella, and has good rehabilitation effect; in addition, this embodiment simple structure, the installation of being convenient for, convenient operation, labour saving and time saving.
Preferably, the fixing assembly comprises an inner sleeve 105 and a fixing disc 104, wherein the inner sleeve 105 is arranged in the outer sleeve 101 below the rotary drum 102, and the bottom end of the connecting column 106 is connected with the top end of the inner sleeve 105; the fixed disk 104 is arranged at the bottom of the inner sleeve 105; one end of the plurality of bone grabbing claws 7 is fixed on the fixed disc 104, and the other end of the plurality of bone grabbing claws 107 sequentially penetrates through the bottoms of the inner sleeve 105 and the outer sleeve 101.
Here, as shown in fig. 4 and 5, the fixation assembly comprises an inner sleeve 105 and a fixation disc 104, the fixation disc 104 being adapted to be connected with a bone grabbing jaw 107. As shown in fig. 5, the fixing plate 104 is located in the inner sleeve 105, and a plurality of holes may be formed at the edge of the fixing plate 104, and a plurality of bone grabbing claws 107 may be inserted into the plurality of holes to fix the fixing plate 104. The upper end of the connecting column 106 is provided with a nut 110, and the nut 110 is screwed with the drum 102 so that the connecting column 106 is fixed to the drum 102. The lower end of the connecting column 106 is T-shaped, so that the lower end of the connecting column 106 is movably connected with the top end of the inner sleeve 105, namely, the inner sleeve 105 is not driven to rotate when the connecting column 106 rotates along the axial direction; thus, the bone-grabbing claws 107 attached to the fixed tray 104 do not rotate with the rotation of the drum 102 when the drum 102 is rotated.
Preferably, the device further comprises a multi-dimensional force sensor 103 and a display module, wherein the multi-dimensional force sensor 103 is arranged at the bottom of the inner sleeve 105, and the multi-dimensional force sensor 103 is abutted with the bottom surface of the fixed disc 104; the data output of the multidimensional force sensor 103 is connected with a display module.
Here, the multi-dimensional force sensor 103 may be a three-dimensional force sensor or a six-dimensional force sensor. The present embodiment uses a three-dimensional force sensor to detect forces in three directions.
In this embodiment, the bottom surface of the fixing disc 104 abuts against the three-dimensional force sensor, that is, the fixing disc 104 and the three-dimensional force sensor are both disposed in the inner sleeve 105, and the bone grabbing claws 107 penetrate through the bottom of the inner sleeve 105 and the bottom of the outer sleeve 101, respectively. In the embodiment, the inner sleeve 105 is arranged, so that the bottom surface of the three-dimensional force sensor is supported, the top surface of the three-dimensional force sensor is conveniently abutted with the fixed disc 104, and the stress condition of the fixed disc 104 is conveniently detected; and the fixed disk 104 is pulled by the bone grabbing claw 107, so that the stress condition of the bone grabbing claw 107 is indirectly detected. Thus, the three-dimensional force sensor detects the force with which the bone-grasping claw 107 pulls the patella by detecting the pressure applied by the fixing plate 104 in three directions.
The three-dimensional force sensor of this embodiment is cylindrical, and its data output end is located at the side, and when implementing, holes penetrating into the data lines need to be respectively provided on the side walls of the inner sleeve 105 and the outer sleeve 101, so that the data lines are convenient to connect with the data output end of the three-dimensional force sensor. The display module is connected with the three-dimensional force sensor through a data line and is used for receiving and displaying force signals in three directions detected by the three-dimensional force sensor. The medical staff pay attention to forces in three directions in real time during operation, so that the excessive or insufficient force in a certain direction is avoided.
As shown in fig. 8, the display module includes a first conditioning module, a controller, a key module, and an LCD display screen, and the multidimensional sensor 103 is connected to the first conditioning module, and the first conditioning module, the key module, and the LCD display screen are respectively connected to the controller. Wherein, the controller can adopt STC89C52 singlechip. As shown in fig. 6, an LCD display may be mounted on the top surface of the mounting block 40.
It should be noted that, for a multi-dimensional force sensor, for example, a three-dimensional force sensor; some sensors output forces in xyz directions, wherein z is normal direction force, and at this time, the forces in three directions required to be detected in the embodiment coincide with the forces, and coordinate system conversion is not required; in the forces in xyz directions detected by some sensors, z is a force in a direction perpendicular to the force receiving surface, and then coordinate system conversion is needed, or a direction sensor is added to assist in coordinate system conversion.
In addition, in the specific implementation, the doctor can pre-open a treatment sheet, and the magnitude of force and the traction duration in each direction can be respectively written on the treatment sheet. The nurse uses the device of the invention to drag the patella according to the doctor's treatment list, and when in operation, the nurse can adjust the magnitude and direction of the applied force in time according to the data displayed by the display module.
In the embodiment, the three-dimensional force sensor and the display module are additionally arranged, so that the force applied by the bone grabbing claw 7 in three directions can be detected, the visual connection of the traction effect by medical staff is facilitated, and the medical staff is also facilitated to quantitatively make a treatment plan in advance.
Further, a first handle 109 is fixedly attached to the top end of the drum 102.
Specifically, as shown in fig. 4, in this embodiment, a first handle 109 is provided at the top end of the drum 2, so that a medical staff can conveniently hold the first handle 109 to rotate the drum 102 for operation. Also, in particular embodiments, the first handle 109 can be integral with the drum 102.
Preferably, a plurality of support claws 108 are also fixedly connected to the bottom end of outer sleeve 101, respectively.
Specifically, in order to ensure the stability of the whole device when the bone grabbing claw 107 grabs the patella, in this embodiment, a supporting claw 108 is fixedly arranged outside the outer sleeve 101, the supporting claw 108 is slightly longer than the bone grabbing claw 107, the acting area of the supporting claw 108 is slightly larger than that of the bone grabbing claw 107, and the tail end of the supporting claw 108 can act on the periphery of the knee and the upper leg and the lower leg; the support claw 108 of this embodiment can improve the comfort of the patient on the premise of ensuring the fixation stability of the whole device.
Optionally, as shown in fig. 1, the device further comprises an L-shaped support 112 and a support base 111, wherein the support base 111 is fixed on the mounting seat 40, and the bottom end of the support 112 is rotatably connected with the support base 111; the top end of the support 112 is detachably connected to the outer sleeve 101.
Here, in the present embodiment, when in use, the patient is required to lie down, and in order to reduce the manpower, the grasping member is mounted on the mount 40 to facilitate the grasping claw 7 to grasp the support frame 112 and the support frame base 111 of the patient's patella smoothly. As shown in fig. 2, the support frame 112 of the present embodiment includes a cross bar and a vertical bar, and the outer sleeve 101 is fixed to the cross bar. The vertical rod is telescopic, and the cross rod and the vertical rod can be movably connected (or detachable) so that the height of the cross rod mounted on the vertical rod can be adjusted.
When the embodiment is used, a medical staff adjusts the height of the support frame 112, and after the patella is grabbed by the bone grabbing claw 107, the rotary drum 102 is rotated, and the grabbing direction and the grabbing force of the bone grabbing claw 107 are adjusted; the embodiment can continuously act on the patella, thereby improving the rehabilitation effect; the labor force of medical staff is reduced, and the working efficiency of the medical staff is improved.
In summary, the outer sleeve 101 of the present embodiment is screwed with the drum 102, and the rotation motion is converted into the lifting motion, so that the grabbing force of the bone grabbing claw 107 indirectly connected with the drum 102 can be increased, and the patella is fastened; the first handle 109 and the supporting claw 108 are matched, so that the position stability in use can be kept; the support frame 112 and the support frame base 111 are arranged, so that the device is convenient to install on the installation seat 40, medical staff can be facilitated, the device can be ensured to continuously act on the patella, and the rehabilitation effect is improved; the multi-dimensional force sensor 103 and the display module are arranged, so that the stress conditions of the bone grabbing claw 107 in multiple directions can be detected, the medical staff can conveniently set or adjust the magnitude and the direction of acting force, quantitative physiotherapy is realized, and the rehabilitation effect is further improved.
As shown in fig. 1, 2 and 3, the pulling member includes a thigh strap 231 tied to the distal end of the thigh, a shank strap 221 tied to the proximal end of the shank, and a rotation shaft 210, a first connection strap 232 and a second connection strap 222 symmetrically arranged on both sides of the mount 40, respectively; at least one first gear which rotates by taking the rotating shaft 210 as an axis is fixed on the rotating shaft 210; one side of the first connecting belt 232 is fixedly connected with the thigh strap 231, one end of the first connecting belt 232 is connected with the first support column 233, and the other end of the first connecting belt 232 is provided with a third gear 235 meshed with the first gear; one side of the second connecting belt 222 is fixedly connected with the calf strap 221, one end of the second connecting belt 222 is connected with the second support column 223, and the other end of the second connecting belt 222 is provided with a second gear 225 meshed with the first gear; wherein, the first support column 233 and the second support column 223 are respectively fixed at two ends of the mounting seat 40.
Specifically, as shown in fig. 2 and 3, the mounting seats 40 located on both sides of the affected limb are rectangular parallelepiped frames having hollow interiors. A rotating shaft 210 is respectively arranged at the middle parts of the two mounting seats 40, the bottom ends of the rotating shafts 210 are embedded into a fixed seat 211, and the fixed seat 211 is fixed at the bottom of the mounting seat 40. The rotating shaft 210 is respectively meshed with a first connecting belt 232 positioned at the lower side and a second connecting belt 222 positioned at the upper side; a first support column 233 is fixed at one end of the inside of the mounting base 40, for winding the other end of the first connection strap 232 around the first support column 233; similarly, a second support column 223 is fixed at the other end of the inside of the mounting base 40, and is used for winding the other end of the second connection strap 222 around the second support column 223.
As shown in fig. 2, the outer side of the first connecting band 232 is fixedly coupled to the thigh strap 231 by at least one first connecting post 234, and the inner side of the second connecting band 222 is fixedly coupled to the calf strap 221 by at least one second connecting post 224. Specifically, the second connection post 224 penetrates into the inside of the second connection strap 222, and the second connection post 224 is fixed to the inside of the second connection strap 222 by nuts at both sides of the inside of the second connection strap 222.
The outer side of the first connecting band 232 is connected to the thigh band 231 and the inner side of the second connecting band 222 is connected to the shank band 221, for the purpose of indirectly controlling the relative movement of the thigh band 231 and the shank band 221 using one rotation shaft 210. In a specific implementation, two rotating shafts 210 may be disposed on one mounting seat 40, one rotating shaft 210 is connected with the first connecting belt 232, the other rotating shaft 210 is connected with the second connecting belt 222, and the two rotating shafts 210 of the rotating shaft 210 respectively realize the relative movement of the thigh strap 231 and the calf strap 221.
The outer ends of the first connection post 234 and the second connection post 224 respectively penetrate through the side wall of the mounting seat 40, and as shown in fig. 1, a first sliding slit 401 for facilitating the left-right sliding of the first connection post 234 and a second sliding slit 402 for facilitating the left-right sliding of the second connection post 224 are further formed on the side wall of the mounting seat 40. A fifth handle 236 is fixed to the outer end of the first connecting column 234, and a sixth handle 226 is fixed to the outer end of the second connecting column 224.
Optionally, as shown in fig. 1, a second handle 212 is fixed at the top end of the rotating shaft 210, and a scale corresponding to the pulling force is provided outside the second handle 212, so as to facilitate the rotation of the rotating shaft 210.
Here, the rotating shaft 210 exposes the top end of the mounting seat 40, and the top end of the rotating shaft 210 is provided with a second handle 212, as shown in fig. 6, and graduation marks are further arranged on the mounting seat 40 and at the drinking position of the second handle 212; the graduation marks correspond to the pulling force of the thigh strap 231 and the shank strap 221 on the thigh and shank when the second handle 212 is turned.
In particular, the tension of the first connection band 232 to the thigh strap 231 or the tension of the second connection band 222 to the calf strap 221 is measured in advance when the rotation shaft 210 rotates by a unit angle, and then the corresponding force value is marked on the scale line on the upper surface of the mounting seat 40.
As shown in fig. 1, 2 and 3, the pushing member includes a thigh-calf pushing hammer and a patella pushing hammer symmetrically mounted on the mount 40 at corresponding positions of the knee joint; the big and small leg promotes the below that the hammer was promoted to the patella was located, and the big and small leg promotes the hammer and includes the third handle 323 that links to each other in proper order, has the first output shaft 321 of external screw thread and first promotion hammer 322, and the patella promotes the hammer including the fourth handle 313 that links to each other in proper order, has the second output shaft 311 of external screw thread and second promotion hammer 312, is fixed with respectively on the mount pad 40 with first output shaft 321 threaded connection's down tube 404 and with the upper tube 403 of second output shaft 311 adaptation.
As shown in fig. 7, the thigh-and-calf pushing hammer includes a third handle 323, a first output shaft 321, and a first pushing hammer 322, and the third handle 323 is circular. Here, the profile of the first push hammer 322 is adapted to the profile of the side surface of the connection of the upper and lower legs. The two ends of the first output shaft 321 are respectively provided with external threads, the third handle 323 is in threaded connection with one end of the first output shaft 321, and the first pushing hammer 322 is in threaded connection with the other end of the first output shaft 321. An external thread is provided on the middle of the first output shaft 321 on the side of the first push hammer 322, where the external thread is adapted to the internal thread in the lower pipe 404.
A patella pushing hammer is further provided above the thigh-calf pushing hammer, and the patella pushing hammer includes a fourth handle 313, a second output shaft 311, and a second pushing hammer 312, where the shape of the second pushing hammer 312 is adapted to the shape of the patella side. External threads are respectively arranged at two ends of the second output shaft 311, a fourth handle 313 is in threaded connection with one end of the second output shaft 311, and a second pushing hammer 312 is in threaded connection with the other end of the second output shaft 311. An external thread is provided at the middle of the second output shaft 311 on the side of the second push hammer 312, where the external thread is fitted with an internal thread in the lower pipe 404.
Optionally, a first pressure sensor and a second pressure sensor are respectively mounted on the first pushing hammer 322 and the second pushing hammer 312, and a display for respectively displaying a first pressure value measured by the first pressure sensor and a second pressure value measured by the second pressure sensor is mounted on the mounting seat 40.
In the foregoing embodiment, as shown in fig. 6, an LCD display 601 is mounted on the mount 40; here, a display module may be mounted on each mount 40, and the first pressure sensor and the second pressure sensor on each mount 40 are connected to the controller on the respective mount 40 via the second conditioning module and the third conditioning module, respectively, as shown in fig. 8. The first pressure sensor detects the pressure signal when the first pushing hammer 322 pushes the side of the thigh and the lower leg, and the second pressure sensor detects the pressure signal when the second pushing hammer 312 pushes the side of the patella; after the two pressure signals are sent to the controller for preprocessing, the controller sends the pressure value to be displayed to the LCD display 601 for display, as shown in fig. 7. In addition, a third pressure sensor may be installed on the rotating shaft 210, or between the rotating shaft 210 and the connecting belt, or between the connecting belt and the binding belt, to detect the pulling force of the pulling member pulling the distal thigh upward and pulling the proximal shank downward, and the pressure signal detected by the third pressure sensor may be sent to the controller through the fourth conditioning module.
In summary, the device of the embodiment is combined to form a CPM machine (joint restorer) to meet the traction and restoration requirements of the knee joint of the patient.
In the description of embodiments of the present invention, unless explicitly specified and limited otherwise, the terms "mounted," "connected," and "connected" are to be construed broadly, and may be, for example, fixedly connected, detachably connected, or integrally connected; can be mechanically or electrically connected; can be directly connected or indirectly connected through an intermediate medium, and can be communication between two elements. The specific meaning of the above terms in the present invention will be understood in specific cases by those of ordinary skill in the art.
Finally, it should be noted that: the above examples are only specific embodiments of the present invention, and are not intended to limit the scope of the present invention, but it should be understood by those skilled in the art that the present invention is not limited thereto, and that the present invention is described in detail with reference to the foregoing examples: any person skilled in the art may modify or easily conceive of the technical solution described in the foregoing embodiments, or perform equivalent substitution of some of the technical features, while remaining within the technical scope of the present disclosure; such modifications, changes or substitutions do not depart from the spirit and scope of the technical solutions of the embodiments of the present invention, and are intended to be included in the scope of the present invention. Therefore, the protection scope of the present invention shall be subject to the protection scope of the claims.
Claims (1)
1. The knee joint three-dimensional traction device is characterized by comprising mounting seats arranged on two sides of a patient limb, a leg support arranged below the mounting seats and padded behind the patient limb, and a pushing component, a traction component and a grabbing component which are arranged on the mounting seats and act on the knee joint at the same time; wherein the traction component simultaneously pulls the far thigh end upwards and the near shank end downwards, the pushing component pushes the knee joint in the medial-lateral direction, and the grabbing component grabs and lifts the patella forwards;
the grabbing component comprises an outer sleeve, a fixing assembly, a plurality of bone grabbing claws, a connecting column and a rotating drum; the outer sleeve is arranged on the mounting seat, the fixing component is arranged at the bottom of the outer sleeve, one ends of the plurality of bone grabbing claws are fixed on the fixing component, and the other ends of the plurality of bone grabbing claws penetrate out of the outer sleeve from the bottom of the outer sleeve; the rotary drum is positioned above the fixed assembly, the top end of the connecting column is fixedly connected with the bottom end of the rotary drum, and the bottom end of the connecting column is connected with the fixed assembly; the rotary drum is in threaded connection with the upper part of the outer sleeve; the fixing assembly comprises an inner sleeve and a fixing disc, the inner sleeve is arranged below the inner sleeve inner rotary drum, the bottom end of the connecting column is connected with the top end of the inner sleeve, and the lower end of the connecting column is T-shaped, so that the lower end of the connecting column is movably connected with the top end of the inner sleeve; the fixed disc is arranged at the bottom of the inner sleeve; one ends of the bone grabbing claws are fixed on the fixed disc, the other ends of the bone grabbing claws sequentially penetrate out of the bottoms of the inner sleeve and the outer sleeve, a plurality of holes can be formed in the edge of the fixed disc, and the bone grabbing claws penetrate into the holes to be fixed on the fixed disc; the grabbing component further comprises a multi-dimensional force sensor and a display module, wherein the multi-dimensional force sensor is arranged at the bottom of the inner sleeve, and the multi-dimensional force sensor is abutted with the bottom surface of the fixed disc; the data output end of the multidimensional force sensor is connected with the display module; the top end of the rotary drum is fixedly connected with a first handle, the bottom end of the outer sleeve is also fixedly connected with a plurality of supporting claws respectively, the supporting claws are slightly longer than the bone grabbing claws, and the action area of the supporting claws is slightly larger than the bone grabbing claws; the grabbing component further comprises a support frame base and an L-shaped support frame, the support frame base is fixed on the mounting seat, and the bottom end of the support frame is rotationally connected with the support frame base; the top end of the support frame is detachably connected with the outer sleeve, and the vertical rod of the support frame is telescopic, or the cross rod of the support rod is movably connected with the vertical rod, so that the height of the cross rod arranged on the vertical rod can be adjusted;
the traction component comprises thigh binding bands tied at the far ends of thighs, shank binding bands tied at the near ends of shanks, rotating shafts, first connecting belts and second connecting belts which are symmetrically arranged at two sides of the mounting seat respectively; at least one first gear which rotates by taking the rotating shaft as an axle center is fixed on the rotating shaft; one side of the first connecting belt is fixedly connected with the thigh strap, one end of the first connecting belt is connected with the first support column, and a third gear meshed with the first gear is arranged at the other end of the first connecting belt; one side of the second connecting belt is fixedly connected with the shank strap, one end of the second connecting belt is connected with the second supporting column, and a second gear meshed with the first gear is arranged at the other end of the second connecting belt; the first support column and the second support column are respectively fixed at two ends of the mounting seat; the top end of the rotating shaft is fixed with a second handle which is convenient for rotating the rotating shaft, a scale corresponding to the pulling force is arranged outside the second handle, and a first sliding slit which is convenient for the first connecting column to slide left and right and a second sliding slit which is convenient for the second connecting column to slide left and right are also arranged on the side wall of the mounting seat;
the pushing component comprises a thigh pushing hammer and a shank pushing hammer which are symmetrically arranged at corresponding positions of the knee joint on the mounting seat; the patella pushing hammer comprises a third handle, a first output shaft with external threads and a first pushing hammer which are sequentially connected, the patella pushing hammer comprises a fourth handle, a second output shaft with external threads and a second pushing hammer which are sequentially connected, a lower pipe which is in threaded connection with the first output shaft and an upper pipe which is matched with the second output shaft are respectively fixed on the mounting seat, the third handle is circular, the appearance of the first pushing hammer is matched with the appearance of the side surface of the position where the patella is connected with the upper and lower legs, the two ends of the first output shaft are respectively provided with external threads, the third handle is in threaded connection with one end of the first output shaft, the first pushing hammer is in threaded connection with the other end of the first output shaft, the middle part of the first output shaft is close to one side of the first pushing hammer, the external threads are matched with the internal threads in the lower pipe, the appearance of the patella pushing hammer is also arranged above the patella pushing hammer, the appearance of the patella pushing bone is also provided with the appearance of the second output shaft, the appearance of the second output shaft is close to one side of the second output shaft, the two ends of the second output shaft is in threaded connection with the external threads, and the two sides of the second output shaft are respectively; the first pushing hammer and the second pushing hammer are respectively provided with a first pressure sensor and a second pressure sensor, and the mounting seat is provided with a display for respectively displaying a first pressure value measured by the first pressure sensor and a second pressure value measured by the second pressure sensor.
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| CN202111069268.7A CN113648118B (en) | 2021-09-13 | 2021-09-13 | Three-dimensional traction device for knee joint |
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| CN202111069268.7A CN113648118B (en) | 2021-09-13 | 2021-09-13 | Three-dimensional traction device for knee joint |
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| CN113648118B true CN113648118B (en) | 2024-03-08 |
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