CN113952098A

CN113952098A - Separation traction device for knee joint loosening rehabilitation

Info

Publication number: CN113952098A
Application number: CN202111267637.3A
Authority: CN
Inventors: 张运锋; 史岩雷; 吉鸿涛; 孔艳芳; 王玉龙; 李猛
Original assignee: Henan Hospital Traditional Chinese Medicine Second Affiliated Hospital of Henan University of Traditional Chinese Medicine TCM
Current assignee: Henan Hospital Traditional Chinese Medicine Second Affiliated Hospital of Henan University of Traditional Chinese Medicine TCM
Priority date: 2021-10-29
Filing date: 2021-10-29
Publication date: 2022-01-21

Abstract

The invention discloses a separation traction device for knee joint loosening rehabilitation, which relates to the technical field of knee joint separation traction, and particularly relates to a separation traction device for knee joint loosening rehabilitation. This a separation draw gear for knee joint is not hard up recovered, through the cooperation setting of sliding block, lift seat, base, shifting chute, screw rod, clamping frame, clamp plate, conducting block, fixed block, clamping groove, holding frame, bolt, gasket and massage board, make this a separation draw gear for knee joint is not hard up recovered possess the effect of quick fixed shank and knee joint to play convenient to use's effect, reached fixed effectual purpose.

Description

Separation traction device for knee joint loosening rehabilitation

Technical Field

The invention relates to the technical field of separation traction devices, in particular to knee joint separation traction for knee joint loosening rehabilitation.

Background

The knee joint is composed of a femur medial condyle, a femur lateral condyle, a tibia medial condyle, a tibia lateral condyle and a patella, is the joint which is the largest and the most complex in structure and has more damage opportunities of a human body, a joint loosening technology is one of basic skills of modern rehabilitation treatment technologies, belongs to the passive movement category, can select physiological movement and/or accessory movement of the joint as treatment means, improves joint mobility, relieves pain and recovers functions of the joint, and a joint loosening technology is a highly targeted manual operation technology which is completed by a therapist in the movable range of joint movement, belongs to the passive movement category, selects the physiological movement and the accessory movement of the joint as treatment means when being applied, and mainly treats joint dysfunction caused by mechanical factors (non-nervousness).

The joint mobility limitation caused by the fact that the Kaltenborn method is clinically applied to treatment of the contracture around the joint, each patient needs to use the traction device to carry out traction rehabilitation in the clinical rehabilitation process, and the existing rehabilitation separation traction device cannot be universally applied due to different body types of the patients in the actual rehabilitation process. The existing traction device is of a lying type or a sitting type, the actual rehabilitation requirements of patients of different types cannot be met, manual separation traction is carried out, then the medical care personnel can bring greater labor intensity, the whole operation process is complex, and the rehabilitation is inconvenient to carry out.

Disclosure of Invention

Technical problem to be solved

Aiming at the defects of the prior art, the invention provides the separation traction device for the rehabilitation of the loosening of the knee joint, which has the advantages of convenient use, reduction of the labor intensity of medical workers and the like, and solves the problems in the background art.

(II) technical scheme

In order to realize the purposes of convenient use and reducing the labor intensity of medical care personnel, the invention provides the following technical scheme: a separation traction device for knee joint loosening rehabilitation comprises a shank clamping mechanism, a knee joint clamping mechanism, a separation traction mechanism, an arm stretching mechanism, a massage mechanism and an adjustable bed-chair mechanism, wherein the shank clamping mechanism is positioned on one side of the knee joint clamping mechanism, the shank clamping mechanism is installed inside the separation traction mechanism, the massage mechanism is installed at the top of the knee joint clamping mechanism, the knee joint clamping mechanism is installed in the middle of the adjustable bed-chair mechanism, the shank clamping mechanism is installed on the left side of the adjustable bed-chair mechanism, and the arm stretching mechanism is installed on the right side of the adjustable bed-chair mechanism;

the shank clamping mechanism comprises a sliding block, a lifting seat, a base, a moving groove, a screw rod, a clamping frame and a clamping plate, wherein an electric telescopic rod is arranged inside the sliding block, the extending end of the electric telescopic rod is arranged at the bottom of the lifting seat, the outer side of the lifting seat slides and lifts inside the sliding block, the bottom of the clamping frame moves along the axis direction of the screw rod, the outer side of the clamping plate is connected inside the moving groove in a sliding mode, and a conductive block is arranged at the bottom of the sliding block;

the knee joint clamping mechanism comprises a fixing block, a clamping groove, a clamping frame, a bolt, a gasket and a massage plate, wherein the clamping frame slides in the clamping groove;

the separating and traction mechanism comprises a first bed plate, a sliding groove, a transition groove, a pushing frame, a first fixing frame, a pushing groove, a pushing block, a reset spring and a tension rope, wherein the sliding groove is formed in the top of the first bed plate, a sliding block slides in the sliding groove, the pushing block is fixedly connected to one side of the bottom of the sliding block through the pushing frame, one side of the pushing block slides in the pushing groove through the reset spring, the pushing block is connected to the inside of the pushing groove in a sliding mode, and a magnetic field is arranged in the sliding groove;

the arm stretching mechanism comprises a second fixing frame, a placing groove and a telescopic frame, the limiting rod, the movable groove, the pulley, a tension rope and the pulling frame are connected to the inside of the placing groove in a rotating mode through a rotating shaft, the limiting rod is inserted into the placing groove along a hole formed in the second fixing frame, the limiting rod is located on one side of the telescopic frame, the tension rope rotates along the outer side of the pulley, and the pulley rotates along the rotating shaft installed on the inner side wall of the movable groove;

the massage mechanism comprises a massage plate, a connecting seat and iron columns, the coils and massage heads, the iron columns are arranged inside grooves formed in the massage plate through the connecting seat, the coils are wound on the outer sides of the iron columns clockwise, the coils are electrically connected through conducting wires, one ends of the massage heads are provided with magnets, and the massage heads slide on one side of the massage plate;

adjustable bed chair mechanism includes the support frame, backup pad, servo motor, switch, driving gear, driven gear and axis of rotation, the one end of first mount and second mount is passed through the axis of rotation respectively and is rotated at the both ends of support frame, servo motor's one end sets up the interior lateral wall at the recess that the backup pad was seted up, servo motor's output is installed to the axle center department of driving gear, the middle part outside of axis of rotation is installed to driven gear's axle center department, and driven gear meshing is in the outside of driving gear.

Preferably, a hand wheel is installed at one end of the screw rod, one side of the conductive block is electrically connected with the coil through a lead, and the distance between the magnet and the iron column is two to three centimeters.

Preferably, one side of the support frame is provided with a switch, and the switch is electrically connected with the servo motor through a lead respectively.

Preferably, the clamping frame is L-shaped, clamping plates are respectively mounted at one ends of the clamping frame, and the clamping plates are made of memory fabric.

Preferably, the screw rod rotates in a rotary groove formed in the base, and a part of the tension rope is located in a groove formed in the support frame.

Preferably, the number of the coils is a plurality, the coils are electrically connected through conducting wires, and the number of the massage heads is matched with the number of the coils.

Preferably, servo motor's quantity is two servo motor symmetry installs in backup pad bottom both sides, the quantity of axis of rotation is for the quantity looks adaptation with servo motor, and the axis of rotation rotates respectively at the both ends of support frame.

(III) advantageous effects

Compared with the prior art, the invention provides a separation traction device for knee joint loosening rehabilitation, which has the following beneficial effects:

1. this a separation draw gear for knee joint is not hard up recovered, through the cooperation setting of sliding block, lift seat, base, shifting chute, screw rod, clamping frame, clamp plate, conducting block, fixed block, clamping groove, holding frame, bolt, gasket and massage board, make this a separation draw gear for knee joint is not hard up recovered possess the effect of quick fixed shank and knee joint to play convenient to use's effect, reached fixed effectual purpose.

2. This a separation draw gear for knee joint is not hard up recovered, through first bed board, spout, transition groove, push away frame, first mount, promote the groove, promote the piece, reset spring and the cooperation setting of pulling force rope, make this a separation draw gear for knee joint is not hard up recovered possess and do the effect of pulling the action to patient's shank to played the better effect of pulling the effect, and reached simple structure's purpose.

3. This a separation draw gear for knee joint is not hard up recovered, through magnetic field, the second mount, the standing groove, the expansion bracket, the gag lever post, the movable groove, the pulley, the pulling frame, the connecting seat, the iron prop, the coil, press the cooperation setting of massage head and magnet, make this a separation draw gear for knee joint is not hard up recovered possess the patient and can take exercise the arm, and can do the traction action to the shank at tensile in-process, when doing the traction action to the shank simultaneously, can make the massage head carry out the effect of massage to the knee joint, thereby played and made things convenient for the not hard up patient of knee joint to carry out recovered effect, and reached recovered effectual mesh.

Drawings

FIG. 1 is a schematic perspective view of the present invention;

FIG. 2 is a schematic structural view in elevation and section of the invention;

FIG. 3 is a schematic top sectional view of the present invention;

FIG. 4 is a schematic view of the invention in partial section of the interior of the base;

FIG. 5 is a schematic view of the internal part of the inventive fixing block in partial section;

FIG. 6 is a schematic view of the inside of the massage plate according to the present invention;

FIG. 7 is an enlarged schematic view of the structure of FIG. 1 at A;

FIG. 8 is an enlarged view of the structure of FIG. 1 at B;

FIG. 9 is an enlarged view of FIG. 6 at D;

FIG. 10 is a schematic structural view of the front side of the invention;

FIG. 11 is a side cross-sectional structural view of the invention;

fig. 12 is an enlarged schematic view of the invention at C of fig. 11.

In the figure: 101. a slider; 102. a lifting seat; 103. a base; 104. a moving groove; 105. a screw; 106. a clamping frame; 107. a clamping plate; 108. a conductive block; 201. a fixed block; 202. a clamping groove; 203. A clamping frame; 204. a bolt; 205. a gasket; 206. a massage plate; 301. a first bed plate; 302. a chute; 303. a transition groove; 304. a pushing frame; 305. a first fixing frame; 306. a push groove; 307. a pushing block; 308. a return spring; 309. a tension rope; 310. a magnetic field; 401. a second fixing frame; 402. a placement groove; 403. a telescopic frame; 404. a limiting rod; 405. a movable groove; 406. a pulley; 407. a pulling frame; 501. a connecting seat; 502. an iron column; 503. a coil; 504. a massage head; 505. a magnet; 601. a support frame; 602. a support plate; 603. a servo motor; 604. a switch; 605. a driving gear; 606. a driven gear; 607. and rotating the shaft.

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. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.

Referring to fig. 1 to 12, a separating traction device for knee joint loosening rehabilitation comprises a calf clamping mechanism, a knee joint clamping mechanism, a separating traction mechanism, an arm stretching mechanism, a massage mechanism and an adjustable bed-chair mechanism, wherein the calf clamping mechanism is positioned at one side of the knee joint clamping mechanism, the calf clamping mechanism is arranged inside the separating traction mechanism, the massage mechanism is arranged at the top of the knee joint clamping mechanism, the knee joint clamping mechanism is arranged in the middle of the adjustable bed-chair mechanism, the calf clamping mechanism is arranged at the left side of the adjustable bed-chair mechanism, and the arm stretching mechanism is arranged at the right side of the adjustable bed-chair mechanism;

the shank clamping mechanism comprises a sliding block 101, a lifting seat 102, a base 103, a moving groove 104, a screw 105, a clamping frame 106 and a clamping plate 107, wherein an electric telescopic rod is arranged inside the sliding block 101, the extending end of the electric telescopic rod is installed at the bottom of the lifting seat 102, the outer side of the lifting seat 102 is lifted in the sliding block 101 in a sliding mode, the bottom of the clamping frame 106 moves along the axis direction of the screw 105, the outer side of the clamping plate 107 is connected inside the moving groove 104 in a sliding mode, a conductive block 108 is arranged at the bottom of the sliding block 101, the clamping frame 106 is L-shaped, the clamping plate 107 is installed at one end of the clamping frame 106, and the clamping plate 107 is made of memory fabric;

the knee joint clamping mechanism comprises a fixed block 201, a clamping groove 202, a clamping frame 203, a bolt 204, a gasket 205 and a massage plate 206, wherein the clamping frame 203 slides in the clamping groove 202, the clamping groove 202 is arranged in the fixed block 201, the gasket 205 is arranged in a semicircular groove arranged on the clamping frame 203, the bolt 204 is in threaded connection with one side of the fixed block 201, one end of the bolt 204 is abutted against one side of the bottom of the clamping frame 203, through the matching arrangement of the sliding block 101, the lifting seat 102, the base 103, the moving groove 104, the screw 105, the clamping frame 106, the clamping plate 107, the conductive block 108, the fixed block 201, the clamping groove 202, the clamping frame 203, the bolt 204, the gasket 205 and the massage plate 206, the separating traction device for the knee joint loosening rehabilitation has the effect of quickly fixing the lower leg and the knee joint, thereby having the function of convenient use and achieving the purpose of good fixing effect;

the separating traction mechanism comprises a first bed plate 301, a sliding groove 302, a transition groove 303, a pushing frame 304, a first fixing frame 305, a pushing groove 306, a pushing block 307, a return spring 308 and a tension rope 309, wherein the sliding groove 302 is arranged at the top of the first bed plate 301, the sliding block 101 slides in the sliding groove 302, the pushing block 307 is fixedly connected to one side of the bottom of the sliding block 101 through the pushing frame 304, one side of the pushing block 307 slides in the pushing groove 306 through the return spring 308, the pushing block 307 is slidably connected in the pushing groove 306, a magnetic field 310 is arranged in the sliding groove 302, and the separating traction device for the knee joint loosening rehabilitation has the effect of performing traction action on the lower leg of a patient through the matching arrangement of the first bed plate 301, the sliding groove 302, the transition groove 303, the pushing frame 304, the first fixing frame 305, the pushing groove 306, the pushing block 307, the return spring 308 and the tension rope 309, thereby playing a better role in traction effect and achieving the purpose of simple structure;

the arm stretching mechanism comprises a second fixing frame 401, a placing groove 402, an expansion bracket 403, a limiting rod 404, a movable groove 405, a pulley 406, a tension rope 309 and a pulling frame 407, wherein the bottom of the expansion bracket 403 is rotatably connected inside the placing groove 402 through a rotating shaft, the limiting rod 404 is inserted inside the placing groove 402 along a hole formed in the second fixing frame 401, the limiting rod 404 is positioned on one side of the expansion bracket 403, the tension rope 309 rotates along the outer side of the pulley 406, and the pulley 406 rotates along a rotating shaft arranged on the inner side wall of the movable groove 405;

the massage mechanism comprises a massage plate 206, a connecting seat 501, an iron column 502, a coil 503 and a massage head 504, wherein the iron column 502 is arranged inside a groove formed in the massage plate 206 through the connecting seat 501, the coil 503 is wound on the outer side of the iron column 502 clockwise, the coil 503 is electrically connected with the iron column through a conducting wire, one end of the massage head 504 is provided with a magnet 505, the massage head 504 slides on one side of the massage plate 206, one end of a screw rod 105 is provided with a hand wheel, one side of a conducting block is electrically connected with the coil 503 through a conducting wire, the distance between the magnet 505 and the iron column 502 is two to three centimeters, the number of the coil 503 is a plurality, if the coils 503 are electrically connected through conducting wires, the number of the massage head 504 is matched with the number of the coils 503, and the massage head is formed by a magnetic field 310, a second fixing frame 401, a placing groove 402, an expansion bracket 403, a limiting rod 404, a movable groove 405, The pulley 406, the pulling frame 407, the connecting seat 501, the iron column 502, the coil 503, the massage head 504 and the magnet 505 are arranged in a matching manner, so that the separation traction device for the knee joint loosening rehabilitation has the advantages that the arm of a patient can be exercised, the traction action can be performed on the lower leg in the stretching process, and the massage head 504 can massage the knee joint when the traction action is performed on the lower leg, so that the effect of facilitating the rehabilitation of the patient with the knee joint loosening is achieved, and the aim of good rehabilitation effect is fulfilled;

the adjustable bed chair mechanism comprises a support frame 601, a support plate 602, a servo motor 603, a switch 604, a driving gear 605, a driven gear 606 and a rotating shaft 607, wherein one end of a first fixing frame 305 and one end of a second fixing frame 401 are respectively rotated at two ends of the support frame 601 through the rotating shaft 607, one end of the servo motor 603 is arranged at the inner side wall of a groove arranged on the support plate 602, the axis of the driving gear 605 is arranged at the output end of the servo motor 603, the axis of the driven gear 606 is arranged at the outer side of the middle part of the rotating shaft 607, the driven gear 606 is meshed at the outer side of the driving gear 605, one side of the support frame 601 is provided with a switch 608, the switch 608 is respectively and electrically connected with the servo motor 603 through a conducting wire, a screw 105 is rotated in a rotating groove arranged on a base 103, a part of a tensile rope 309 is arranged in the groove arranged on the support frame 601, the number of the servo motors 603 is two, two servo motors 603 are symmetrically arranged at two sides of the bottom of the supporting plate 602, the number of the rotating shafts 607 is matched with that of the servo motors 603, and the rotating shafts 607 rotate at two ends of the supporting frame 601 respectively.

When the device is used, firstly, the lower leg of a patient is placed on the top of the base 103, then the screw 105 is screwed, the screw 105 drives the clamping frame 106 to slide in the moving groove 104 in the rotating process, so that the clamping plate 107 clamps the lower leg of the patient, then the knee joint of the patient is placed on the gasket 205, the bolt 204 is screwed, the bolt 204 can push the clamping frame 203 to slide in the clamping groove 202, so that the clamping frame 203 can drive the massage plate 206 to be clamped at the knee joint of the patient, when the knee joint of the patient needs to be stretched, the patient pulls the pull rope 309 downwards through the pulling frame 407, the other end of the pull rope 309 can drive the pushing block 307 to move in the pushing groove 306, the pushing block 307 can drive the sliding block 101 to move in the sliding groove 302 through the pushing frame 304, and because the magnetic field 310 is arranged in the sliding groove 302, the sliding block 101 can make the conductive block 108 perform magnetic induction line cutting motion in the magnetic field 310 while moving, then alternating current is generated, the generated alternating current can electrify the coil 503 through a lead, because the coil 503 is electrified, magnetic poles can be generated at two ends of the iron column 502, because the alternating current entering the coil 503 further causes the magnetic poles of the iron column 502 to generate regular change, simultaneously, the magnet 505 arranged at one end of the massage head 504 is repelled or attracted, further, the other end of the massage head 504 can massage the knee joint of the patient, in addition, the sliding block 101 can drive the base 103 to slide in the sliding groove 302 through the lifting seat 102, the shank of the patient is stretched, when the patient needs to sit and massage the knee joint, the two servo motors 603 are operated through the switch 604, the output ends of the two servo motors 603 can respectively drive the driving gear 605 to rotate, the driving gear 605 can drive the driven gear 606 to rotate, the driven gear 606 can drive the rotating shaft 607 to rotate at one end of the support frame 601, so that the first fixing frame 305 and the second fixing frame 401 respectively rotate around the two ends of the supporting frame 601, and the patient can massage in a sitting posture.

In summary, the separation traction device for knee joint loosening rehabilitation has the effect of rapidly fixing the lower leg and the knee joint through the matching arrangement of the sliding block 101, the lifting seat 102, the base 103, the moving groove 104, the screw 105, the clamping frame 106, the clamping plate 107, the conductive block 108, the fixed block 201, the clamping groove 202, the clamping frame 203, the bolt 204, the gasket 205 and the massage plate 206, so that the separation traction device for knee joint loosening rehabilitation has the effect of conveniently fixing the lower leg and the knee joint, and achieves the purpose of good fixing effect; through the matching arrangement of the first bed plate 301, the sliding groove 302, the transition groove 303, the pushing frame 304, the first fixing frame 305, the pushing groove 306, the pushing block 307, the reset spring 308 and the pull rope 309, the separating traction device for the knee joint loosening rehabilitation has the effect of performing traction action on the lower leg of a patient, thereby playing a role in better traction effect and achieving the purpose of simple structure; through magnetic field 310, second mount 401, standing groove 402, expansion bracket 403, gag lever post 404, the activity groove 405, pulley 406, pulling frame 407, connecting seat 501, iron prop 502, coil 503, the cooperation of massage head 504 and magnet 505 sets up, make this a separation draw gear for knee joint not hard up is recovered possess the patient and can be tempered the arm, and can do the traction action to the shank at tensile in-process, when doing the traction action to the shank simultaneously, can make massage head 504 carry out the effect of massage to the knee joint, thereby played the effect that makes things convenient for the knee joint not hard up patient to carry out the recovery, and reached recovered effectual purpose

It is noted that, herein, relational terms such as first and second, and the like may be used solely to distinguish one entity or action from another entity or action without necessarily requiring or implying any actual such relationship or order between such entities or actions. Also, the terms "comprises," "comprising," or any other variation thereof, are intended to cover a non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements does not include only those elements but may include other elements not expressly listed or inherent to such process, method, article, or apparatus. Without further limitation, the use of the verb "comprise a" to define an element does not exclude the presence of another, same element in a process, method, article, or apparatus that comprises the element.

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

Claims

1. The utility model provides a separation draw gear for knee joint is not hard up recovered, includes shank fixture, knee joint fixture, separation draw gear, arm tension mechanism, massage mechanism, adjustable bed chair mechanism, its characterized in that: the knee joint clamping mechanism is arranged in the middle of the adjustable bed-chair mechanism, the shank clamping mechanism is arranged on the left side of the adjustable bed-chair mechanism, and the arm stretching mechanism is arranged on the right side of the adjustable bed-chair mechanism;

the shank clamping mechanism comprises a sliding block (101), a lifting seat (102), a base (103), a moving groove (104), a screw rod (105), a clamping frame (106) and a clamping plate (107), wherein an electric telescopic rod is arranged inside the sliding block (101), the extending end of the electric telescopic rod is arranged at the bottom of the lifting seat (102), the outer side of the lifting seat (102) is lifted inside the sliding block (101) in a sliding manner, the bottom of the clamping frame (106) moves along the axial direction of the screw rod (105), the outer side of the clamping plate (107) is connected inside the moving groove (104) in a sliding manner, and a conductive block (108) is arranged at the bottom of the sliding block (101);

the knee joint clamping mechanism comprises a fixing block (201), a clamping groove (202), a clamping frame (203), a bolt (204), a gasket (205) and a massage plate (206), wherein the clamping frame (203) slides in the clamping groove (202), the clamping groove (202) is formed in the fixing block (201), the gasket (205) is installed in a semicircular groove formed in the clamping frame (203), the bolt (204) is in threaded connection with one side of the fixing block (201), and one end of the bolt (204) abuts against one side of the bottom of the clamping frame (203);

the separating and pulling mechanism comprises a first bed plate (301), a sliding groove (302), a transition groove (303), a pushing frame (304), a first fixing frame (305), a pushing groove (306), a pushing block (307), a reset spring (308) and a tension rope (309), wherein the sliding groove (302) is formed in the top of the first bed plate (301), the sliding block (101) slides in the sliding groove (302), the pushing block (307) is fixedly connected to one side of the bottom of the sliding block (101) through the pushing frame (304), one side of the pushing block (307) slides in the pushing groove (306) through the reset spring (308), the pushing block (307) is connected to the inside of the pushing groove (306) in a sliding mode, and a magnetic field (310) is arranged in the sliding groove (302);

the arm stretching mechanism comprises a second fixing frame (401), a placing groove (402), an expansion bracket (403), a limiting rod (404), a movable groove (405), a pulley (406), a tension rope (309) and a pulling frame (407), the bottom of the expansion bracket (403) is rotatably connected inside the placing groove (402) through a rotating shaft, the limiting rod (404) is inserted inside the placing groove (402) along a hole formed in the second fixing frame (401), the limiting rod (404) is located on one side of the expansion bracket (403), the tension rope (309) rotates along the outer side of the pulley (406), and the pulley (406) rotates along a rotating shaft arranged on the inner side wall of the movable groove (405);

the massage mechanism comprises a massage plate (206), a connecting seat (501), an iron column (502), a coil (503) and a massage head (504), wherein the iron column (502) is arranged inside a groove formed in the massage plate (206) through the connecting seat (501), the coil (503) is wound on the outer side of the iron column (502) clockwise, the coils (503) are electrically connected through a conducting wire, one end of the massage head (504) is provided with a magnet (505), and the massage head (504) slides on one side of the massage plate (206);

the adjustable bed chair mechanism comprises a support frame (601), a support plate (602), a servo motor (603), a switch (604), a driving gear (605), a driven gear (606) and a rotating shaft (607), wherein one ends of a first fixing frame (305) and a second fixing frame (401) are respectively rotated at two ends of the support frame (601) through the rotating shaft (607), one end of the servo motor (603) is arranged on the inner side wall of a groove formed in the support plate (602), the axis of the driving gear (605) is arranged at the output end of the servo motor (603), the axis of the driven gear (606) is arranged at the outer side of the middle of the rotating shaft (607), and the driven gear (606) is meshed at the outer side of the driving gear (605).

2. The distraction device for knee joint loosening rehabilitation according to claim 1, wherein: the hand wheel is installed to the one end of screw rod (105), one side of conducting block passes through wire and coil (503) electric connection, the distance between magnet (505) and iron prop (502) is two to three centimetres.

3. The distraction device for knee joint loosening rehabilitation according to claim 1, wherein: one side of the support frame (601) is provided with a switch (608), and the switch (608) is electrically connected with the servo motor (603) through a lead respectively.

4. The distraction device for knee joint loosening rehabilitation according to claim 1, wherein: the clamping frame (106) is L-shaped, clamping plates (107) are respectively mounted at one end of the clamping frame (106), and the clamping plates (107) are made of memory fabric.

5. The distraction device for knee joint loosening rehabilitation according to claim 1, wherein: the screw rod (105) rotates in a rotating groove formed in the base (103), and a part of the tensile rope (309) is located in a groove formed in the support frame (601).

6. The distraction device for knee joint loosening rehabilitation according to claim 1, wherein: the number of the coils (503) is several, the several coils (503) are electrically connected through a conducting wire, and the number of the massage heads (504) is matched with the number of the coils (503).

7. The distraction device for knee joint loosening rehabilitation according to claim 1, wherein: the quantity of servo motor (603) is two servo motor (603) symmetry is installed in backup pad (602) bottom both sides, the quantity of axis of rotation (607) is the quantity looks adaptation with servo motor (603), and axis of rotation (607) rotates the both ends at support frame (601) respectively.