CN209122575U - A hand-to-palm orthosis - Google Patents

Abstract

The utility model discloses a kind of hand opponens orthosis, including a fixation kit, a protection component and a Power Component, in addition the fixed thumb of the fixation kit fixes fourth finger and little finger of toe；Between protection component package index finger, middle finger refer to and metacarpophalangeal joints, while wrapping palm dorsal skin；The Power Component is arranged in conjunction with the fixation kit and the protection component, controls thumb, fourth finger and little finger of toe by the Power Component and moves, and practice the palm.Hand can be made to realize that thumb and ring, little finger of toe practice the palm in the case where dorsiflexion at disease initial stage using the hand opponens orthosis, convalescence can carry out the resistance exercise of opponeus group, without other people or mechanical external force, use convenient for patient.

Description

A hand-to-palm orthosis

technical field

The utility model relates to the technical field of medical devices, more precisely to a hand-to-palm orthosis.

Background technique

The ulnar nerve is a branch of the brachial plexus of the spinal nerve. It comes from the medial bundle of the brachial plexus. It mainly innervates the muscles of the forearm and the ulnar side of the palm and the sensation of one and a half fingers on the ulnar side. After the ulnar nerve is injured, the ulnar side of the palm, all the little finger, and the ring finger Side sensation disappeared. In the wrist, the ulnar nerve is susceptible to laceration. In the fingers and palms, the superficial branch of the ulnar nerve is also susceptible to laceration. The causes of ulnar nerve injury include cervical rib, supracondylar fracture of the humerus, elbow dislocation, wrist incision, etc., as well as bone hyperplasia at the humeral ulnar nerve groove, etc. Traumatic ulnar neuritis is also a common cause of injury to the ulnar nerve.

After the ulnar nerve injury, the flexor carpi ulnaris, the 4th and 5th digital deep flexor muscles, the hypothenar muscle, the interosseous muscle, the 3rd and 4th lumbrical muscles lose function, and the hand is claw-shaped; the internal muscles of the hand are extensively paralyzed , the hypothenar, interosseous muscles, the 3rd and 4th lumbrical muscles, the adductor pollicis and the medial head of the flexor pollicis brevis were all paralyzed; the hypothenar and intermetacarpal bones were obviously depressed; the ring finger and the little finger had claw deformity ; Claw-like deformity of the elbow injury is mild, the metacarpophalangeal joint of the ring little finger is hyperextension, the interphalangeal joint is flexed, the index and middle finger have no claw-like deformity or only slight deformity; the fingers cannot be adducted and abducted; the paper clip test is positive; the thumb and The index finger cannot form a perfect "O" shape with the palm, and the two-finger pinch test shows weakness, which is due to the paralysis of the adductor hallucis muscle and the inability to stabilize the metacarpophalangeal joint of the thumb; the little finger and the thumb are difficult to pinch; due to the paralysis of the internal muscles of the hand , the grip strength of the hand is reduced by about 50%, and the flexibility of the hand is lost. The claw hand caused by ulnar nerve injury needs to be corrected in time.

At present, the treatment for ulnar nerve injury is mainly conservative treatment, mostly fixation of the joint between the ring little finger, other hand orthoses are mostly fixation or wrist flexion and extension orthosis, and there are also hand muscle resistance training orthoses, but the patients suffer from severe pain. In the early stage of the disease, when the patient has no muscle strength in the hand, the patient cannot do hand resistance exercises by himself. In this situation, apart from fixation, no good method has been found to promote the patient's hand sensory input and improve muscle strength.

Utility model content

In view of this, the purpose of the present invention is to provide a hand-to-palm orthosis, comprising a fixing component, a protection component and a power component, the fixing component fixes the thumb, and the ring finger and the little finger are fixed in addition; the protection component Wrap the index finger, middle finger interphalangeal and metacarpophalangeal joints, and wrap the skin on the back of the palm at the same time; the power component is arranged in combination with the fixing component and the protection component, and the movement of the thumb, ring finger and little finger is controlled by the power component, Do palm-to-hand exercises.

In order to achieve the above purpose, the present invention provides a hand-to-palm orthosis, which includes a fixing component, a protection component and a power component. The fixing component fixes the thumb, and also fixes the ring finger and the little finger; the protection component wraps the index finger , the middle finger and the metacarpophalangeal joint, while wrapping the skin on the back of the palm; the power assembly is set in combination with the fixing assembly and the protection assembly, and the movement of the thumb, ring finger and little finger can be controlled by controlling the power assembly, Do palm-to-hand exercises.

Preferably, the fixing assembly includes a first fixing part and a second fixing part, the first fixing part fits and surrounds the thumb; the second fixing part fits and surrounds the ring finger and the little finger; the first fixing part The component and the second fixing component are respectively connected with the power assembly.

Preferably, the protection assembly has a finger protection part and a back of the hand protection part, the finger protection part and the back of the hand protection part are integral, the finger protection part is fitted around the index finger and the middle finger at the same time, and fits around the back of the hand. The metacarpophalangeal joint; the back of the hand protection part covers the back of the hand to be close to the wrist-metacarpophalangeal joint, and the protection component is connected with the power component through the back of the hand protection part.

Preferably, the protection assembly has a buckle, both ends of the buckle are connected to the back of the hand protection part, the buckle is arranged on the palm side, and the buckle is arranged at two centimeters above the wrist crease on the palm side .

Preferably, the power assembly includes a fulcrum screw, a first rubber band assembly, a second rubber band assembly, two wooden strips, a first wire rope assembly, a second wire rope assembly, an anti-friction pad, two traction Steel wire rope and two iron rod assemblies, the fulcrum screw is connected with the back of the hand protection part; the first rubber band assembly is connected with the bottom two ends of the back of the hand of the first fixing part and the fulcrum screw; the second rubber The rib assembly connects the bottom two ends of the back of the hand of the second fixing part and the fulcrum screw; two wooden strips are connected to the back of the hand protection part through the fulcrum screw, and the two wooden strips are centered on the fulcrum screw The cross is in an "X" shape, the top of one of the wooden strips is located at the metacarpophalangeal joint of the index finger, and the top of the other wooden strip is located at the metacarpophalangeal joint of the ring finger. The two iron rod assemblies are connected; the first wire rope assembly is connected to the bottom two ends of the palm side of the first fixing member, the second wire rope assembly is connected to the bottom two ends of the palm side of the second fixing member, and the The first wire rope assembly and the second wire rope assembly are gathered at the palm, and the first wire rope assembly and the second wire rope assembly are gathered at one end of the palm, and the anti-friction pad is provided; the first wire rope assembly and all the The second wire rope assembly is divided into two traction wire ropes at the convergence point, and the two traction wire ropes extend toward the wrist and are respectively connected with the two iron rod assemblies.

Preferably, the iron rod assembly has a slider and a spring inside, the slider can slide along the axial direction of the iron rod assembly, the slider protrudes from the side of the iron rod assembly, and the slider extends out The side part of the iron rod assembly is connected with the traction wire rope, the wooden bar extends into the iron rod assembly and contacts with the slider, and the end of the wooden rod connected with the iron rod assembly can be along the iron rod assembly. The axial sliding of the spring is arranged coaxially with the iron rod assembly, and the spring is arranged at the end of the slider away from the wooden bar.

Preferably, the fulcrum screw is arranged on the back of the hand protection part two centimeters from the upper end of the wrist crease.

Compared with the prior art, the advantages of the hand-to-palm orthosis disclosed by the present utility model are: the use of the hand-to-palm orthosis can make the hand stretch back in the early stage of the disease to realize the thumb, ring, little finger The palm-to-hand exercise, the resistance exercise of the palmar muscles can be carried out during the recovery period, without the help of others or mechanical external force, which is convenient for patients to use; the fixed component and the protective component are designed for each patient's hand shape, and use 3D It is produced by printing technology, which is more suitable for the shape of the patient's hand, and protects the skin while being evenly stressed, which is conducive to improving the correction effect and improving the comfort of the patient.

Description of drawings

In order to more clearly illustrate the embodiments of the present utility model or the technical solutions in the prior art, the following briefly introduces the accompanying drawings that need to be used in the description of the embodiments or the prior art. Obviously, the accompanying drawings in the following description These are just some embodiments of the present invention, and for those of ordinary skill in the art, other drawings can also be obtained from these drawings without creative effort.

Figure 1 is a schematic diagram of the back of the hand of a hand-to-palm orthosis of the present invention.

Figure 2 is a schematic view of the palm of a hand-to-palm orthosis of the present invention.

FIG. 3 is a schematic cross-sectional view of the iron rod of a hand-to-palm orthosis of the present invention.

Detailed ways

As shown in FIG. 1 and FIG. 2 , a hand-to-palm orthosis of the present application includes a fixing component, a protection component and a power component. The fixing component fixes the thumb, and also fixes the ring finger and the little finger; the protection component Wrap the index finger, middle finger interphalangeal and metacarpophalangeal joints, and wrap the dorsal skin of the palm at the same time; the power assembly is set in combination with the fixing assembly and the protection assembly, and the thumb, ring finger and little finger can be controlled by controlling the power assembly Exercise, do palm-to-hand exercises. It is worth noting that the fixed component and the protective component are manufactured by 3D printing technology. First, a 3D model of the wearer's hand is established in a computer using related software, and then the fixed component and the protective component are built on the basis of the 3D model. The 3D model of the protection component is 3D printed according to the 3D model to make the fixed component and the protection component, and the personalized design fits the wearer's hand, which is more uniform in force and is conducive to protecting the skin. Further, the fixing component and the protection component are mainly made of low-temperature thermoplastic plates as raw materials.

Specifically, the fixing assembly includes a first fixing part 11 and a second fixing part 12 , the first fixing part 11 fits around the thumb, and the first fixing part 11 surrounds the thumb joint to keep it straight state; the second fixing member 12 fits and surrounds the ring finger and the little finger, and the second fixing member 12 surrounds the ring finger and the little finger joint to keep the ring finger and the little finger together in a straight state. The first fixing member 11 and the second fixing member 12 are respectively connected with the power assembly, and the first fixing member 11 and the second fixing member 12 move under the driving of the power assembly to drive The thumb, the ring finger and the little finger perform a palm-to-palm motion, and the power component can drive the thumb, the ring finger and the little finger to return to a straight state without exerting force on the muscles.

The protection assembly has a finger protection part 21 , a back of the hand protection part 22 and a buckle 23 , the finger protection part 21 and the back of the hand protection part 22 are integrated, and the finger protection part 21 fits around the index finger at the same time. and the middle finger, and fit around the metacarpophalangeal joint; the back of the hand protection part 22 covers the back of the hand to the wrist; both ends of the buckle 23 are connected with the back of the hand protection part 22, and the buckle 23 is arranged on the palm side, used to fix the protection assembly. Specifically, the buckle 23 is arranged two centimeters above the wrist crease on the palm side, the buckle 23 is made of elastic material, and the protection component can be put on or taken off by operating the buckle 23 . The protection assembly is connected to the power assembly through the back-of-hand protection portion 22, and protects the wearer's hand during the operation of the power assembly.

The power assembly includes a fulcrum screw 31, a first rubber band assembly 32, a second rubber band assembly 33, two wooden bars 34, a first wire rope assembly 35, a second wire rope assembly 36, and an anti-friction pad 37. , two traction wire ropes 38 and two iron rod assemblies 39 . The fulcrum screw 31 is connected to the back of the hand protection part 22 , and the fulcrum screw 31 is arranged on the back of the hand protection part 22 two centimeters from the upper end of the wrist crease. The first rubber band assembly 32 includes two first rubber bands 321, and the two first rubber bands 321 are respectively connected to the bottom two ends of the back of the hand of the first fixing member 11 and the fulcrum screw 31. The first rubber band 321 is detachable; the second rubber band assembly 33 includes two second rubber bands 331, and the two second rubber bands 331 are respectively connected to the bottom two of the second fixing part 12 on the back of the hand. The end and the fulcrum screw 31, and the two second rubber bands 331 are detachable. Two wooden strips 34 are connected to the back of the hand protection part through the fulcrum screw 31, the two wooden strips 34 are crossed in an "X" shape with the fulcrum screw 31 as the center, and the top of one of the wooden strips 34 is located at the top of the back of the hand. At the metacarpophalangeal joint of the index finger, the top end of the other wooden strip 34 is located at the metacarpophalangeal joint of the ring finger, and the two wooden strips 34 can move slightly in the horizontal direction. One end of the two wooden bars 34 close to the wrist is respectively connected with the two iron rod assemblies 39 . The first wire rope assemblies 35 include two first wire ropes 351 , and the two second wire rope assemblies 36 include two second wire ropes 361 . The two first wire ropes 351 are respectively connected to the bottom ends of the palm side of the first fixing member 11 , and the two second wire ropes 361 are respectively connected to the bottom ends of the palm side of the second fixing member 12 . The first wire rope 351 and the two second wire ropes 361 are gathered at the palm, and the two first wire ropes 351 and the two second wire ropes 361 are gathered at the palm near one end. The anti-friction pad 37 is provided. , to prevent the wire rope from causing friction damage to the palm. The two first wire ropes 351 and the two second wire ropes 361 are divided into two traction wire ropes 38 at the convergence point. Component 39 is connected. By pressing the two wooden bars 34 close to the wrist end, the two pulling wire ropes 38 can pull the first wire rope assembly 35 and the second wire rope assembly 36 under the action of the iron rod assembly 39 , and then drive the first fixing part 11 and the second fixing part 12 to make the thumb, ring and little finger do palm-to-hand exercises.

As shown in FIG. 3 , the iron rod assembly 39 has a slider 391 inside, the slider 391 can slide along the axial direction of the iron rod assembly 39 , the slider 391 protrudes from the side of the iron rod assembly 39 , and The slider 391 protrudes from the side portion of the iron rod assembly 39 and is connected to the traction wire rope 38 . The wooden bar 34 extends into the iron rod assembly 39 to contact the slider 391, and the end of the wooden rod 34 connected to the iron rod assembly 39 can slide along the axial direction of the iron rod assembly 39. When the wooden bar 34 slides along the iron rod assembly 39 toward the sliding block 391 , the wooden rod 34 pushes the sliding block 391 to slide along the iron rod assembly 39 , thereby pulling the traction wire rope 38 . The iron rod assembly 39 also has a spring 392 inside, the spring 392 is coaxially arranged with the iron rod assembly 39, and the spring 392 is disposed at the end of the slider 391 away from the wooden bar 34, the spring 392 can make the slider 391 and the wooden bar 34 reset without exerting force on the muscles, that is, the thumb, ring finger and little finger can be restored to the straight state, which is beneficial to the patient's palm-to-hand practice.

For patients with palmar function loss in the early stage, the muscle strength of the palmar muscle group is less than grade 2. At this time, the first rubber band assembly 32 and the second rubber band assembly 33 are removed, and the two wooden strips 34 are operated to push the two The slider 391 slides inside the iron rod assembly 39, pulling the traction wire rope 38 to drive the first fixing part 11 and the second fixing part 12, and then drive the thumb, ring, and little finger to do palm-to-hand exercises, During the exercise, the metacarpophalangeal joints of the index and middle fingers remain in 30° flexion. For the patient whose palmar muscle group muscle strength reaches level 2 or above during the recovery period, the first rubber band assembly 32 and the second rubber band assembly 33 are installed at this time, the wrist joint is kept in a neutral position, and the resistance of the hand to the palm function is directly carried out. resistance practice. The hand-to-palm orthosis of the present application can provide targeted exercises for patients at different stages, does not require the help of others or mechanical external force, is convenient to use, and has a good recovery effect.

The above description of the disclosed embodiments enables those skilled in the art to implement or use the present invention. Various modifications to these embodiments will be readily apparent to those skilled in the art, and the generic principles defined herein may be implemented in other embodiments without departing from the spirit or scope of the present invention. Thus, the present invention is not intended to be limited to the embodiments shown herein, but is to be accorded the widest scope consistent with the principles and novel features disclosed herein.

Claims (7)

1. A hand-to-palm orthosis, characterized in that it comprises a fixed component, a protection component and a power component, the fixed component fixes the thumb, and the ring finger and the little finger are fixed in addition; the protective component wraps the index finger, the middle finger Between the palm and the metacarpophalangeal joint, and wrapping the dorsal skin of the palm at the same time; the power assembly is set in combination with the fixing assembly and the protection assembly. practise. 2 . The hand-to-palm orthosis according to claim 1 , wherein the fixing assembly comprises a first fixing part and a second fixing part, the first fixing part fits around the thumb; Two fixing parts fit around the ring finger and the little finger; the first fixing part and the second fixing part are respectively connected with the power assembly. 3 . The hand-to-palm orthosis according to claim 2 , wherein the protection assembly has a finger protection part and a back of the hand protection part, the finger protection part and the back of the hand protection part are integrated, so the The finger protection part fits and surrounds the index finger and the middle finger at the same time, and fits and surrounds the metacarpophalangeal joint; the back of the hand protection part covers the back of the hand and is close to the wrist-metacarpal joint, and the protection component is connected to the power component through the back of the hand protection part. 4 . The hand-to-palm orthosis according to claim 3 , wherein the protection component has a buckle, both ends of the buckle are connected to the back of the hand protection portion, and the buckle is arranged on the palm side. 5 . , the buckle is arranged two centimeters above the lateral wrist crease of the palm. 5. The hand-to-palm orthosis according to claim 3, wherein the power component comprises a fulcrum screw, a first rubber band component, a second rubber band component, two wooden strips, and a first wire rope assembly, a second wire rope assembly, an anti-friction pad, two traction wire ropes and two iron rod assemblies, the fulcrum screw is connected to the back of the hand protection part; the first rubber band assembly is connected to the first fixed part on the back of the hand The bottom two ends of the side and the fulcrum screw; the second rubber band assembly connects the bottom two ends of the second fixing part on the back of the hand and the fulcrum screw; two wooden strips are protected by the fulcrum screw and the back of the hand The two wooden strips are crossed in an "X" shape with the fulcrum screw as the center. The top of one wooden strip is located at the metacarpophalangeal joint of the index finger, and the top of the other wooden strip is located at the ring finger. At the metacarpophalangeal joint, one end of the two wooden bars close to the wrist is respectively connected with the two iron rod assemblies; the first wire rope assembly is connected to the bottom two ends of the palm side of the first fixing member, and the second wire rope assembly Connect the bottom two ends of the palm side of the second fixing member, the first wire rope assembly and the second wire rope assembly converge at the palm, and the first wire rope assembly and the second wire rope assembly converge in the palm close to One end is provided with the anti-friction pad; the first wire rope assembly and the second wire rope assembly are divided into two traction wire ropes at the convergence point, and the two traction wire ropes extend toward the wrist and are respectively connected with the two iron rods Component connection. 6 . The hand-to-palm orthosis according to claim 5 , wherein the iron rod assembly has a slider and a spring inside, the slider can slide along the axial direction of the iron rod assembly, and the slider 6 . The block protrudes from the side of the iron rod assembly, and the slider protrudes from the side part of the iron rod assembly to be connected with the traction wire rope, the wooden bar protrudes into the iron rod assembly and contacts the slider, and the The end of the wooden bar connected to the iron rod assembly can slide along the axial direction of the iron rod assembly, the spring is coaxially arranged with the iron rod assembly, and the spring is disposed at the end of the slider away from the wooden bar . 7 . The hand-to-palm orthosis according to claim 5 , wherein the fulcrum screw is arranged on the back of the hand protection part two centimeters from the upper end of the wrist crease. 8 .