CN115227475A - Passive hip joint brace based on fluid spring drive - Google Patents

Passive hip joint brace based on fluid spring drive Download PDF

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Publication number
CN115227475A
CN115227475A CN202210870964.6A CN202210870964A CN115227475A CN 115227475 A CN115227475 A CN 115227475A CN 202210870964 A CN202210870964 A CN 202210870964A CN 115227475 A CN115227475 A CN 115227475A
Authority
CN
China
Prior art keywords
fluid spring
driving
rod
fixed
steel wire
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
CN202210870964.6A
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Chinese (zh)
Inventor
张烜
万世昌
朱浩明
封硕
王婉颖
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Changan University
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Changan 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.)
Filing date
Publication date
Application filed by Changan University filed Critical Changan University
Priority to CN202210870964.6A priority Critical patent/CN115227475A/en
Publication of CN115227475A publication Critical patent/CN115227475A/en
Pending legal-status Critical Current

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Classifications

    • 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
    • A61F5/05—Devices for stretching or reducing fractured limbs; Devices for distractions; Splints for immobilising
    • 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
    • A61H1/02—Stretching or bending or torsioning apparatus for exercising
    • A61H1/0237—Stretching or bending or torsioning apparatus for exercising for the lower limbs
    • A61H1/0255—Both knee and hip of a patient, e.g. in supine or sitting position, the feet being moved in a plane substantially parallel to the body-symmetrical-plane
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B25—HAND TOOLS; PORTABLE POWER-DRIVEN TOOLS; MANIPULATORS
    • B25J—MANIPULATORS; CHAMBERS PROVIDED WITH MANIPULATION DEVICES
    • B25J17/00—Joints
    • B25J17/02—Wrist joints
    • B25J17/0258—Two-dimensional joints
    • B25J17/0266—Two-dimensional joints comprising more than two actuating or connecting rods
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B25—HAND TOOLS; PORTABLE POWER-DRIVEN TOOLS; MANIPULATORS
    • B25J—MANIPULATORS; CHAMBERS PROVIDED WITH MANIPULATION DEVICES
    • B25J9/00—Programme-controlled manipulators
    • B25J9/0006—Exoskeletons, i.e. resembling a human figure
    • 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
    • A61H2201/01—Constructive details
    • A61H2201/0157—Constructive details portable
    • 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
    • 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
    • A61H2201/16—Physical interface with patient
    • A61H2201/1602—Physical interface with patient kind of interface, e.g. head rest, knee support or lumbar support
    • A61H2201/165—Wearable interfaces

Abstract

A passive hip joint brace based on fluid spring driving comprises a waist unit, a connecting transmission device, a fluid spring device, a driving steel wire and a knee joint stabilizing device; the waist unit is connected with the thighs through the connecting transmission devices, the two groups of connecting transmission devices are symmetrically arranged on the left leg and the right leg respectively, the fluid spring devices are arranged inside the connecting transmission devices, one end of each driving steel wire is fixed on each fluid spring device, and the other end of each driving steel wire is fixed on the waist unit; each connecting transmission device is also connected with a knee joint stabilizing device. The invention greatly reduces the volume of the hip joint passive power-assisted brace, reduces related structures, reduces the weight and improves the use convenience of the whole machine in daily life while realizing the power assistance of hip joint movement and improving the stability of the knee joint.

Description

Passive hip joint brace based on fluid spring drive
Technical Field
The invention belongs to the field of rehabilitation medical instruments, and particularly relates to a passive hip joint brace based on fluid spring driving.
Background
The traditional hip joint brace only has the function of fixing the hip joint, and is generally used for fixing and recovering the hip joint after hip joint operation and sports injury to prevent secondary injury. Although a few hip joint supports have certain boosting effect, most of the boosting effect is not obvious because the traditional mechanical spring cannot provide enough driving force under a small volume. Therefore, the conventional hip joint brace cannot effectively reduce the load of the hip joint and provide enough additional driving power for the hip joint during movement.
Disclosure of Invention
The invention aims to provide a bionic hip joint support based on fluid spring driving so as to solve the problems.
In order to achieve the purpose, the invention adopts the following technical scheme:
a passive hip joint brace based on fluid spring driving comprises a waist unit, a connecting transmission device, a fluid spring device, a driving steel wire and a knee joint stabilizing device; the waist unit is connected with the thighs through the connecting transmission devices, the two groups of connecting transmission devices are symmetrically arranged on the left leg and the right leg respectively, the fluid spring devices are arranged inside the connecting transmission devices, one end of the driving steel wire is fixed on the fluid spring devices, and the other end of the driving steel wire is fixed on the waist unit; each connecting transmission device is also connected with a knee joint stabilizing device.
Furthermore, the connecting transmission device comprises a transmission rod, a spring cover plate, a lower connecting piece and a fluid spring device; the transmission rod is arranged on the waist unit through the hinge device, the spring cover plate is buckled on the transmission rod, the fluid spring is fixed on the transmission rod through a screw, and the lower connecting piece is fixed at the lower end of the transmission rod through a screw.
Furthermore, a driving cam is arranged at the upper end of the transmission rod, an adjusting knob is arranged on the waist unit, one end of a driving steel wire is fixed on the adjusting knob, and the other end of the driving steel wire bypasses the driving cam and then penetrates through a steel wire channel of the transmission rod to be connected to the fluid spring device.
Further, the fluid spring device comprises a cylinder body, a piston rod and a driving block; the other end of the driving steel wire is fixed on the driving block, one end of each of the two piston rods is respectively and vertically fixed at two ends of the driving block, the other end of each of the two piston rods is fixed with a piston, one end of each piston is inserted into one end of the cylinder body, and the other end of the cylinder body is hermetically fixed at one end, close to the driving cam, in the transmission rod.
Furthermore, a connecting plate and a sleeve are arranged between the driving block and the cylinder body, the sleeve is fixedly connected with the middle part of the driving block through a bolt, and a driving steel wire is fixedly connected with the center of the sleeve; a circular hole for penetrating the sleeve and the piston rod is formed in the connecting plate, and a sealing sleeve is arranged between the piston rod and the circular hole; a sealing bolt hole is arranged in the transmission rod, and the cylinder body is connected with the sealing bolt hole in the transmission rod through a fixing screw.
Further, a fluid is disposed within the cylinder.
Further, the knee joint fixing device comprises an outer fixing shell, an inner fixing shell, an outer connecting rod, an inner connecting rod, an upper driving block and a lower driving block (25); one end of the outer connecting rod and one end of the inner connecting rod are connected to the upper driving block, the other end of the outer connecting rod and the other end of the inner connecting rod are connected to the lower driving block, and the outer fixing shell and the inner fixing shell are connected through threads to fix the outer connecting rod, the inner connecting rod, the upper driving block and the lower driving block inside.
Furthermore, the outer connecting rod and the inner connecting rod are connected through a sleeve.
Furthermore, the waist unit, the connecting transmission device and the knee joint stabilizing device are all provided with a bandage for fixing.
Furthermore, the waist unit is composed of a left part and a right part which are connected through a plurality of connecting blocks.
Compared with the prior art, the invention has the following technical effects:
the invention uses the fluid spring device as a driving unit, and designs the hip joint bionic passive exoskeleton which has compact structure and light installation weight and can generate higher hip joint driving force. When the hip joint extends, under the action of an extension angle, the fluid spring is pulled to realize compression through the matching of the driving steel wire and the driving cam, and part of kinetic energy of a human body is converted into elastic potential energy of the fluid spring to be stored. When the hip joint of the human body bends forwards, the fluid spring releases elastic potential energy, the generated reset force pulls the driving steel wire, and the driving cam is matched to generate driving force assisting the movement of the hip joint at the hip joint. The invention greatly reduces the volume of the hip joint passive power-assisted brace, reduces related structures, reduces the weight and improves the use convenience of the whole machine in daily life while realizing the power assistance of hip joint movement and improving the stability of the knee joint.
Drawings
FIG. 1 is a block diagram of the present invention;
FIG. 2 is an exploded view of the connecting actuator of the present invention;
FIG. 3 is a cross-sectional view of the connecting actuator of the present invention;
FIG. 4 is an exploded view of the fluid spring assembly of the present invention;
FIG. 5 is a cross-sectional view of the fluid spring assembly of the present invention;
fig. 6 is an exploded view of the knee joint stabilization device of the present invention.
Wherein: 1. a lumbar unit; 2. connecting a transmission device; 3. a fluid spring device; 4. a lower cover plate; 5. an upper cover plate; 6. a transmission rod; 7. a spring cover plate; 8. a lower connecting piece; 9. adjusting a knob; 10. a drive wire; 11. a drive cam; 12. fixing a nut; 13. a drive block; 14. a piston rod; 15. a sleeve; 16. a piston; 17. a cylinder body; 18. sealing sleeves; 19. a connecting plate; 20. a fluid; 21. a knee joint fixation device; 22. an outer stationary housing; 23. an outer link; 24. a sleeve; 25. a lower drive block; 26. an outer link; 27. an upper drive block; 28. the inner side is fixed with the shell.
Detailed Description
The invention is further described below with reference to the accompanying drawings:
referring to fig. 1 to 6, a bionic hip joint support based on fluid spring driving is characterized in that: a lumbar unit 1, a connecting transmission 2, a drive wire 10 and a fluid spring device 3; the waist unit 1 is formed by connecting a plurality of connecting blocks and is similar to a watch metal watchband structure; the waist unit 1 is connected with thighs by means of connecting transmission devices 2, the two groups of connecting transmission devices 2 are symmetrically arranged on the left leg and the right leg respectively, the fluid spring devices 3 are arranged inside the connecting transmission devices 2, one ends of driving steel wires 10 are fixed on sleeves 15 of the fluid spring devices 3, and the other ends of the driving steel wires are fixed on the waist unit 1; when the knee joint is extended, the connecting transmission device 2 and the lumbar unit 1 are bent relatively, the driving steel wire 10 is tensioned and matched with the driving cam 11 to pull the sleeve 15 on the fluid spring device 3 to the center of the hip joint, so that the fluid spring device 3 is compressed; when the hip joint is bent, the relative angle between the connecting transmission device 2 and the waist unit 1 is restored to the initial position, the fluid spring device 3 rebounds to generate a reset force, the driving steel wire 10 is pulled to be restored to the original state, and the driving steel wire and the driving cam 11 are matched to generate a driving moment on the hip joint; the connecting transmission device 2 is fixed at the far ends of the thighs through a binding belt, and the waist unit 1 is fixed at the waist through the binding belt;
the connecting transmission device 2 comprises a transmission rod 6, a spring cover plate 7, a lower connecting piece 8 and a fluid spring device 3; the transmission rod 6 is arranged on the waist unit 1 through a hinge device, and the upper end of the transmission rod 6 is provided with a driving cam 11; the fluid spring device 3 is arranged inside the transmission rod 6.
The fluid spring is fixed on the transmission rod 6 through a screw, and the lower connecting piece 8 is fixed at the lower end of the transmission rod 6 through a screw; a steel wire channel is arranged in the lower end of the driving cam 11.
The lumbar unit 1 is provided with an adjusting knob 9, and a drive wire 10 is fixed at one end to the adjusting knob 9 and at the other end to the fluid spring means 3 by passing through a wire passage of the drive rod 6 after bypassing the drive cam 11.
The fluid spring device 3 comprises a cylinder 17, a piston 16, a piston rod 14 and a driving block 13; the other end of the driving steel wire 10 is fixed on the driving block 13, one end of each of the two piston rods 14 is vertically fixed at two ends of the driving block 13, the other end of each of the two piston rods 14 is fixed with a piston 16, one end of each of the two piston rods 16 is inserted into one end of a cylinder 17, and the other end of each of the two cylinder 17 is hermetically fixed at one end of the driving rod 6 close to the driving cam 11.
A connecting plate 19 and a sleeve 15 are arranged between the driving block 13 and the cylinder body 17, the sleeve 15 is fixedly connected with the middle part of the driving block 13 through a bolt, and the driving steel wire 10 is fixedly connected with the center of the sleeve 15; a circular hole for penetrating through the sleeve 15 and the piston rod 14 is formed in the connecting plate 19, and a sealing sleeve 18 is arranged between the piston rod 14 and the circular hole; a sealing bolt hole is arranged in the transmission rod 6, and the cylinder body 17 is connected with the sealing bolt hole on the transmission rod 6 through a fixing screw.
The outer link 23 and the inner link 26 are connected at one end to the upper drive block 27 and at the other end to the lower drive block 25, and the outer stationary shell 22 and the inner stationary shell 28 are screwed to fix the links and the drive block inside.
The waist unit 1, the connecting transmission device 2 and the knee joint stabilizing device 21 are all provided with a bandage for fixing.
Referring to fig. 1, a bionic hip joint support based on fluid spring driving comprises a waist unit 1, a connecting transmission device 2 and a fluid spring device 3. The fluid spring device 3 is used for storing energy by compressing fluid 20 in the cylinder 17 through the piston when the hip joint is extended, and is expanded by the compressed fluid 20 to release energy when the hip joint is bent, so that the piston 16 is pushed to generate reaction force, the load of the hip joint is reduced, and additional power is provided for the hip joint. The connecting transmission device 2 enables the whole device and the hip joint to synchronously carry out flexion/extension movement and transmit power through the matching of a hinge structure, a driving cam 11, a driving steel wire 10 and a lower connecting piece 8. The waist unit 1 and the connecting transmission device 2 are used for fixing the whole hip joint support on the waist and the thighs of a human body, wherein the wearing device of the waist unit 1 is used for fixing the support on the waist, and the wearing device of the connecting transmission device 2 is used for fixing the support on the thighs.
The working principle is as follows: when the hip joint is stretched (in the energy storage stage), the motion of the lower limbs of the human body drives the connecting transmission device 2 in the hip joint support to synchronously rotate with the thigh, so that the angle of the connecting transmission device 2 and the waist unit 1 is synchronous with the motion angle of the hip joint. The drive wire 10 is fixed at one end to the adjustment knob 9 of the lumbar unit 1 and at the other end to a connecting sleeve 15 connected to the drive block 13. When the coupling gear 2 is extended relative to the lumbar unit 1, the drive wire 10 is tensioned by the drive cam 11, the travel of the drive wire 10 on the drive cam 11 is increased, and the coupling sleeve 15 in the fluid spring device 3 is pulled in the direction of the hip joint due to the constant length of the drive wire 10. Because the connecting sleeve 15 is connected with the driving block 13 through the fixing nut, and the driving block 13 is connected with the piston rod 14 through the thread, the driving block 13 drives the piston 16 to compress the fluid 20 in the closed cylinder 17 under the driving of the driving steel wire 10, thereby converting the kinetic energy of the hip joint movement into the potential energy of the fluid 20 to be compressed for storage; when the hip joint is bent (in an energy release stage), the waist unit 1 and the connecting transmission device 2 are reset from an extension state, the driving steel wire 10 is driven by the driving cam 11 to be loosened, the stored potential energy is released into kinetic energy by the compressed fluid 20 in the cylinder body of the fluid spring device 3, the piston 16 is pushed and the driving block 13 is driven to move in the opposite direction of compression, so that the driving steel wire 10 is pulled to restore the driving steel wire 10, the released kinetic energy is transmitted to the leg part through the connecting transmission device 2, the hip joint is further driven to be bent, and additional support and power are provided for the hip joint.
Referring to fig. 2, the connection driving device 2 includes a lower cover plate 4, an upper cover plate 5, a driving rod 6, a spring cover plate 7, a lower connection member 8, and an adjustment knob 9. The transmission rod 6 is arranged on the lower cover plate 4 through a hinge device, so that the connecting transmission device 2 can synchronously rotate with thighs, and the cylinder body 17 of the fluid spring device 3 is connected with the transmission rod 6 through two sealed threaded holes to connect the connecting transmission device 2 and the fluid spring device 3 together. The lower link 8 is fixed to the driving rod 6 by two screws so that the lower link 8 moves synchronously with the thigh. The driving cam 11 on the driving rod 6 changes the stroke of the driving steel wire 10 when the hip joint bends/extends, drives the fluid spring device 3 to compress when extending, and transmits the power released by the fluid spring device 3 to the hip joint when bending. One end of a driving steel wire 10 is fixed on a clamping groove of the adjusting knob 9, passes through a steel wire channel of the lower cover plate 4, passes through the driving cam 11, and is fixed in a sleeve of the fluid spring device 3 through a steel wire channel of the transmission rod 6, and the driving steel wire is mainly used for connecting the transmission of motion between the transmission device 2 and the fluid spring device 3. The specific working mode is as shown in fig. 3: during flexion/extension, the driving cam 11 is in contact with the driving steel wire 10, and through a contact curve between the driving cam and the driving steel wire 10, the driving steel wire 10 is tensioned during extension of the hip joint, and the stroke of the driving steel wire 10 on the driving cam 11 is increased, so that the fluid spring device 3 is pulled to store energy; when the hip joint bends, the driving steel wire 10 is loosened, the stroke of the driving steel wire 10 on the driving cam 11 is recovered, the motion provided by the fluid spring device 3 is transmitted to the connecting transmission device 2, and finally, additional support and power are provided for the hip joint bending. The tension of the drive wire 10 can be adjusted by adjusting the knob 9 to adjust the initial pressure of the fluid spring. An adjusting knob is fixed on the outer side of the lumbar unit 1, and the initial pressure of the fluid spring 3 can be conveniently adjusted.
Referring to fig. 4, the fluid spring device 3 includes a piston 16, a piston rod 14, a cylinder 17, a sealing unit 18, a connection plate 19, a driving block 13, a driving wire 10, and a connection sleeve 15. The driving steel wire 10 is fixed with a connecting sleeve 15 in a binding mode, the connecting sleeve 15 is connected with the driving block 13 through a fixing nut, one end of a piston rod 14 is connected to the driving block 13 through threads, and the other end of the piston rod is connected with a piston 14. The piston 16 and the piston rod 14 are disposed in a cylinder 17, and a sealing unit 18 is installed at the end of the cylinder 17 by a screw connection, thereby forming a closed space to store fluid. One end of the cylinder body 17 is fixed at the upper end of the transmission rod 6 through threads, a fixing screw is arranged in the middle of the cylinder body to improve the axial stability of the matching, the other end of the cylinder body is fixed with the connecting plate 19, and two holes of the connecting plate 19 have higher symmetry degrees, so that the position symmetry of the two cylinder bodies 17 is ensured. The specific working mode is as shown in fig. 5: when the hip joint is stretched, the driving steel wire 10 pulls the driving block 13 to move towards the hip joint through the connecting sleeve 15, the driving block 13 drives the piston 16 to compress the fluid 20 in the cylinder body 17 through the piston rod 14, the kinetic energy of the hip joint is converted into the potential energy of the fluid 20 after being compressed and stored, meanwhile, because the piston 16 is in a gear shape, the space between every two teeth provides certain damping for the piston, and therefore the hip joint achieves certain buffering when the hip joint is bent and stored with energy; when the hip joint is bent, the compressed fluid in the cylinder 17 expands to release energy, the piston 16 is pushed, and the driving block 13 is driven by the piston rod 14 to move in the opposite direction of the hip joint, so that the driving steel wire 10 is pulled to convert the potential energy of the compressed fluid into kinetic energy, and the kinetic energy is finally transmitted to the hip joint, and additional support and power are provided for the extension of the hip joint.
Referring to fig. 6, the outer link 23 and the inner link 26 have one end connected to the upper drive block 27 and the other end connected to the lower drive block 25, and the outer fixing shell 22 and the inner fixing shell 28 are screwed to fix the links and the drive blocks inside. When the knee joint is flexed, the upper driving block 27 and the lower driving block 25 are flexed synchronously with the knee joint through the connecting rods 23 and 26, and the displacement of the knee joint in the cross section is stabilized in the process.
All components of the present invention can be manufactured using different manufacturing methods including, but not limited to, additive manufacturing (3D printing), machining with a numerically controlled machine, casting, stamping, and the like.

Claims (10)

1. A passive hip joint brace based on fluid spring driving is characterized by comprising a waist unit (1), a connecting transmission device (2), a fluid spring device (3), a driving steel wire (10) and a knee joint stabilizing device (21); the waist unit (1) is connected with thighs through connecting transmission devices (2), two groups of connecting transmission devices (2) are symmetrically arranged on the left leg and the right leg respectively, the fluid spring devices (3) are arranged inside the connecting transmission devices (2), one end of a driving steel wire (10) is fixed on the fluid spring devices (3), and the other end of the driving steel wire is fixed on the waist unit (1); each connecting transmission device (2) is also connected with a knee joint stabilizing device (21).
2. The passive hip brace based on fluid spring drive according to claim 1, characterized in that the connection transmission device (2) comprises a transmission rod (6), a spring cover plate (7), a lower connecting piece (8) and a fluid spring device (3); the transmission rod (6) is arranged on the waist unit (1) through a hinge device, the spring cover plate (7) is buckled on the transmission rod (6), the fluid spring (3) is fixed on the transmission rod (6) through a screw, and the lower connecting piece (8) is fixed at the lower end of the transmission rod (6) through a screw.
3. A passive hip brace based on fluid spring actuation according to claim 2, characterized in that the upper end of the actuation rod (6) is provided with an actuation cam (11), the lumbar unit (1) is provided with an adjustment knob (9), one end of an actuation wire (10) is fixed on the adjustment knob (9), and the other end of the actuation wire (10) bypasses the actuation cam (11) and then passes through a wire channel of the actuation rod (6) to be connected to the fluid spring device (3).
4. A passive hip brace based on fluid spring drive according to claim 1, characterized in that the fluid spring device (3) comprises a cylinder (17), a piston (16), a piston rod (14) and a drive block (13); the other end of the driving steel wire (10) is fixed on the driving block (13), one ends of two piston rods (14) are respectively and vertically fixed at two ends of the driving block (13), pistons (16) are fixed at the other ends of the two piston rods (14), one end with the pistons (16) is inserted into one end of a cylinder body (17), and the other end of the cylinder body (17) is hermetically fixed at one end, close to the driving cam (11), in the driving rod (6).
5. The passive hip joint brace based on the fluid spring driving is characterized in that a connecting plate (19) and a sleeve (15) are arranged between the driving block (13) and the cylinder body (17), the sleeve (15) is fixedly connected with the middle part of the driving block (13) through a bolt, and the driving steel wire (10) is fixedly connected with the center of the sleeve (15); round holes for penetrating through the sleeve (15) and the piston rod (14) are formed in the connecting plate (19), and a sealing sleeve (18) is arranged between the piston rod (14) and the round holes; a sealing bolt hole is arranged in the transmission rod (6), and the cylinder body (17) is connected with the sealing bolt hole on the transmission rod (6) through a fixing screw.
6. A passive hip brace based on fluid spring actuation according to claim 4, characterized in that a fluid (20) is provided in the cylinder (17).
7. A passive hip brace based on fluid spring actuation according to claim 1, characterized by a knee fixation device (21) comprising an outer fixation shell (22), an inner fixation shell (28), an outer link (23), an inner link (26), an upper drive block (27) and a lower drive block (25); one end of the outer connecting rod (23) and one end of the inner connecting rod (26) are connected to the upper driving block (27), the other end of the outer connecting rod is connected to the lower driving block (25), and the outer fixing shell (22) and the inner fixing shell (28) are connected through threads to fix the outer connecting rod (23), the inner connecting rod (26), the upper driving block (27) and the lower driving block (25) inside.
8. A passive hip brace based on fluid spring actuation according to claim 6, characterized by the connection between the outer link (23) and the inner link (26) via a sleeve (24).
9. A passive hip brace based on fluid spring actuation according to claim 1, characterized in that the lumbar unit (1), the articulation gear (2) and the knee stabilizer (21) are provided with straps for fixation.
10. The passive hip brace based on fluid spring driving is characterized in that the lumbar unit (1) is composed of a left part and a right part which are connected through a plurality of connecting blocks.
CN202210870964.6A 2022-07-22 2022-07-22 Passive hip joint brace based on fluid spring drive Pending CN115227475A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN202210870964.6A CN115227475A (en) 2022-07-22 2022-07-22 Passive hip joint brace based on fluid spring drive

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CN202210870964.6A CN115227475A (en) 2022-07-22 2022-07-22 Passive hip joint brace based on fluid spring drive

Publications (1)

Publication Number Publication Date
CN115227475A true CN115227475A (en) 2022-10-25

Family

ID=83675564

Family Applications (1)

Application Number Title Priority Date Filing Date
CN202210870964.6A Pending CN115227475A (en) 2022-07-22 2022-07-22 Passive hip joint brace based on fluid spring drive

Country Status (1)

Country Link
CN (1) CN115227475A (en)

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