CN220655739U - Novel knee joint artificial limb - Google Patents
Novel knee joint artificial limb Download PDFInfo
- Publication number
- CN220655739U CN220655739U CN202321828878.5U CN202321828878U CN220655739U CN 220655739 U CN220655739 U CN 220655739U CN 202321828878 U CN202321828878 U CN 202321828878U CN 220655739 U CN220655739 U CN 220655739U
- Authority
- CN
- China
- Prior art keywords
- connecting rod
- knee joint
- cylinder
- hinge shaft
- rotary cylinder
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- 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.)
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Links
- 210000000629 knee joint Anatomy 0.000 title claims abstract description 34
- 210000003414 extremity Anatomy 0.000 title claims abstract description 20
- 210000000689 upper leg Anatomy 0.000 claims description 22
- 230000035939 shock Effects 0.000 claims description 7
- RKTYLMNFRDHKIL-UHFFFAOYSA-N copper;5,10,15,20-tetraphenylporphyrin-22,24-diide Chemical compound [Cu+2].C1=CC(C(=C2C=CC([N-]2)=C(C=2C=CC=CC=2)C=2C=CC(N=2)=C(C=2C=CC=CC=2)C2=CC=C3[N-]2)C=2C=CC=CC=2)=NC1=C3C1=CC=CC=C1 RKTYLMNFRDHKIL-UHFFFAOYSA-N 0.000 claims description 5
- 238000013016 damping Methods 0.000 claims description 5
- 241000309551 Arthraxon hispidus Species 0.000 claims description 4
- 230000003014 reinforcing effect Effects 0.000 claims description 3
- 210000003127 knee Anatomy 0.000 claims 3
- 206010017577 Gait disturbance Diseases 0.000 abstract description 4
- 238000005452 bending Methods 0.000 abstract description 3
- 230000001360 synchronised effect Effects 0.000 abstract description 3
- 210000002414 leg Anatomy 0.000 description 2
- 210000003205 muscle Anatomy 0.000 description 2
- 238000002266 amputation Methods 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 210000003141 lower extremity Anatomy 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
Abstract
The utility model discloses a novel knee joint artificial limb, wherein a first hinge shaft is arranged on an upper rotating shaft of an upper rotating cylinder, a second hinge shaft is arranged on an upper cylinder seat of the upper rotating cylinder, a third hinge shaft is arranged on a lower rotating shaft of a lower rotating cylinder, a fourth hinge shaft is arranged on a lower cylinder seat of the lower rotating cylinder, two ends of a front connecting rod are respectively connected with the first hinge shaft and the fourth hinge shaft, two ends of a rear connecting rod are respectively connected with the second hinge shaft and the third hinge shaft, and the upper rotating cylinder, the lower rotating cylinder, the front connecting rod and the rear connecting rod are driven by a large artificial limb to synchronously bend and stretch and can form geometric locking. The utility model enables a wearer to flexibly bend and stretch the knee joint and can rapidly keep synchronous operation with the bending and stretching operation of the knee joint; when bearing, the rear connecting rod and the lower rotary cylinder slightly rotate and can form an angle of 15 degrees, so that stable support is provided for a wearer; when the bearing disappears, the connection among the three parts is unlocked immediately, the use is convenient, and the problems of forward kneeling, leg dragging and the like can be effectively prevented.
Description
Technical Field
The utility model relates to the technical field of medical appliances, in particular to a novel knee joint prosthesis.
Background
For lower limb disabled persons, especially disabled persons with thigh amputation, a prosthesis with good performance meeting the use requirements is very desirable, wherein the performance of the knee joint is critical. For patients with poor stump condition or weak muscle strength or needing to stand frequently, the prosthetic knee joint needs to have better locking characteristics so as to meet the standing requirement. For patients with better stump state, stronger muscle force or frequent walking, the knee joint is required to have good resistance adjustable characteristic so as to meet the walking requirement. In particular, some patients require knee joints that have both locking characteristics that meet standing needs and resistance-adjustable characteristics that meet walking needs.
The general artificial limb is usually designed into a cantilever structure, has low structural strength and large volume, and is easy to kneel forward, drag legs and the like.
Disclosure of Invention
The utility model aims to solve the technical problems of overcoming the defects in the prior art, and providing a novel knee joint artificial limb which is convenient to use, can quickly lock the knee joint when bearing weight, and can effectively prevent the problems of forward kneeling, leg dragging and the like.
In order to solve the technical problems, the utility model adopts the following technical scheme:
the utility model provides a novel knee joint artificial limb, includes the thigh connecting piece, the thigh connecting piece is connected with the thigh artificial limb, still includes rotary cylinder, lower rotary cylinder, preceding connecting rod and back connecting rod, be equipped with first articulated shaft on the last rotary shaft of rotary cylinder, be equipped with the second articulated shaft on the last jar seat of rotary cylinder, be equipped with the third articulated shaft on the lower rotary shaft of rotary cylinder down, be equipped with the fourth articulated shaft on the lower jar seat of rotary cylinder down, the both ends of preceding connecting rod respectively with first articulated shaft and fourth articulated shaft, the both ends of back connecting rod are connected with second articulated shaft and third articulated shaft respectively, it is connected with the thigh connecting piece to go up the jar seat down, the preceding connecting rod is located the front side of knee joint, the back connecting rod is located the rear side of knee joint, go up rotary cylinder, lower rotary cylinder, preceding connecting rod and back connecting rod and the back connecting rod drive by big false artificial limb and stretch the motion in step, and can form the geometrical lock.
As a further improvement of the above technical scheme:
the length of the front connecting rod is greater than that of the rear connecting rod, and the distance between the first hinge shaft and the fourth hinge shaft is greater than that between the second hinge shaft and the third hinge shaft.
The lower cylinder seat is provided with a mounting hole, an elastic damping part is inserted in the mounting hole, one end of the rear connecting rod, which is close to the third hinge shaft, is provided with an abutting part, and the abutting part can elastically abut against the elastic damping part when the rear connecting rod rotates.
The elastic shock absorbing piece is shock absorbing rubber.
The front connecting rod and the rear connecting rod are respectively provided with two connecting rods and are respectively arranged at the left side and the right side of the knee joint.
And a connecting block for reinforcing connection is connected between the two rear connecting rods.
The lower cylinder seat is provided with a threaded pipe, and one end of the lower leg artificial limb is in threaded connection with the threaded pipe and can adjust the connection length.
The thigh connecting piece is provided with a tetragonal cone joint connected with the thigh artificial limb.
Compared with the prior art, the utility model has the advantages that:
the utility model enables a wearer to flexibly bend and stretch knee joints through a linkage structure formed by the upper rotary cylinder, the lower rotary cylinder, the front connecting rod and the rear connecting rod, and can rapidly keep synchronous operation with the bending and stretching operation of the knee joints; when bearing, the rear connecting rod and the lower rotary cylinder slightly rotate and can form an angle of 15 degrees, so that stable support is provided for a wearer; when the bearing disappears, the connection among the three parts is unlocked immediately, the use is convenient, and the problems of forward kneeling, leg dragging and the like can be effectively prevented.
Drawings
Fig. 1 is a schematic perspective view of the knee joint prosthesis.
Fig. 2 is a schematic side view cross-sectional structure of the novel knee joint prosthesis.
Legend description:
1. thigh links; 11. a tetragonal cone joint head; 2. an upper rotary cylinder; 21. an upper rotating shaft; 211. a first hinge shaft; 22. an upper cylinder seat; 221. a second hinge shaft; 3. a lower rotary cylinder; 31. a lower rotating shaft; 311. a third hinge shaft; 32. a lower cylinder seat; 321. a fourth hinge shaft; 322. a mounting hole; 323. a threaded tube; 4. a front link; 5. a rear connecting rod; 6. an elastic shock absorbing member; 61. an abutment; 7. and (5) connecting a block.
Description of the embodiments
The utility model is described in further detail below with reference to the drawings and the specific examples.
As shown in fig. 1 and 2, the novel knee joint prosthesis of the present embodiment includes a thigh connecting piece 1, the thigh connecting piece 1 is connected with the thigh prosthesis, and further includes an upper rotary cylinder 2, a lower rotary cylinder 3, a front connecting rod 4 and a rear connecting rod 5, a first hinge shaft 211 is disposed on an upper rotary shaft 21 of the upper rotary cylinder 2, a second hinge shaft 221 is disposed on an upper cylinder seat 22 of the upper rotary cylinder 2, a third hinge shaft 311 is disposed on a lower rotary shaft 31 of the lower rotary cylinder 3, a fourth hinge shaft 321 is disposed on a lower cylinder seat 32 of the lower rotary cylinder 3, two ends of the front connecting rod 4 are respectively connected with the first hinge shaft 211 and the fourth hinge shaft 321, two ends of the rear connecting rod 5 are respectively connected with the second hinge shaft 221 and the third hinge shaft 311, the upper cylinder seat 22 is connected with the thigh connecting piece 1, the lower cylinder seat 32 is connected with the shank prosthesis, the front connecting rod 4 is disposed on a front side of the knee joint, the rear connecting rod 5 is disposed on a rear side of the knee joint, and the upper rotary cylinder 2, the lower rotary cylinder 3, the front connecting rod 4 and the rear connecting rod 5 are synchronously extended by the large prosthesis. The knee joint can be flexibly bent and stretched by a wearer through a linkage structure formed by the upper rotary cylinder 2, the lower rotary cylinder 3, the front connecting rod 4 and the rear connecting rod 5, and the knee joint can be rapidly and synchronously operated with the bending and stretching operation of the knee joint; when bearing weight, the rear connecting rod 5 and the lower rotary cylinder 3 slightly rotate and can form an angle of 15 degrees to provide stable support for a wearer; when the bearing disappears, the connection among the three parts is unlocked immediately, the use is convenient, and the problems of forward kneeling, leg dragging and the like can be effectively prevented.
In the present embodiment, the length of the front link 4 is greater than the length of the rear link 5, and the distance between the first hinge shaft 211 and the fourth hinge shaft 321 is greater than the distance between the second hinge shaft 221 and the third hinge shaft 311. By setting the length difference, the knee joint can effectively bend and stretch.
In this embodiment, the lower cylinder base 32 is provided with a mounting hole 322, an elastic shock absorbing member 6 is inserted into the mounting hole 322, an abutment member 61 is disposed at one end of the rear link 5 near the third hinge shaft 311, and the abutment member 61 can elastically abut against the elastic shock absorbing member 6 when the rear link 5 rotates. By the elastic abutment of the abutment member 61 and the elastic damper 6, the rear link 5 can be buffered when rotated in place, and wearing comfort is improved.
In this embodiment, the elastic damper 6 is a damper rubber. The damping rubber is easy to purchase, low in price and easy to install and manufacture.
In this embodiment, the front link 4 and the rear link 5 are provided in two, and are provided on the left and right sides of the knee joint, respectively. The two front connecting rods 4 are symmetrically arranged on the first hinging shaft 211 and the fourth hinging shaft 321, the two rear connecting rods 5 are symmetrically arranged on the second hinging shaft 221 and the third hinging shaft 311, and the two front connecting rods 4 and the two rear connecting rods 5 enable the whole synchronous movement to be more stable.
In this embodiment, a connection block 7 for reinforcing connection is connected between the two rear links 5. The rigidity of the connection of the two rear links 5 can be enhanced by the connection block 7.
In this embodiment, the lower cylinder base 32 is provided with a threaded pipe 323, and one end of the lower leg prosthesis is screwed with the threaded pipe 323 and can adjust the length of the connection. Is conveniently connected with the artificial leg by a threaded pipe 323.
In this embodiment, the thigh connecting part 1 is provided with a tetragonal pyramid joint head 11 connected with a thigh artificial limb. The thigh connecting piece 1 can be connected with the thigh artificial limb conveniently through the tetragonal cone joint head 11.
The above description is merely a preferred embodiment of the present utility model, and the scope of the present utility model is not limited to the above examples. Modifications and variations which would be obvious to those skilled in the art without departing from the spirit of the utility model are also considered to be within the scope of the utility model.
Claims (8)
1. The utility model provides a novel knee joint artificial limb, includes thigh connecting piece (1), thigh connecting piece (1) is connected with the thigh artificial limb, and its characterized in that still includes rotary cylinder (2), lower rotary cylinder (3), preceding connecting rod (4) and back connecting rod (5), be equipped with first articulated shaft (211) on last rotary shaft (21) of rotary cylinder (2), be equipped with second articulated shaft (221) on last cylinder holder (22) of rotary cylinder (2), be equipped with third articulated shaft (311) on lower rotary shaft (31) of lower rotary cylinder (3), be equipped with fourth articulated shaft (321) on lower cylinder holder (32) of lower rotary cylinder (3), the both ends of preceding connecting rod (4) respectively with first articulated shaft (211) and fourth articulated shaft (321), the both ends of back connecting rod (5) are equipped with second articulated shaft (221) and third articulated shaft (311) respectively, upper cylinder holder (22) are connected with thigh connecting piece (1), lower leg (32) are located the prosthetic limb (3), the prosthetic limb (4) are located and are located in the side of preceding rotary cylinder (4), the prosthetic limb (5), the prosthetic limb (4) is located and is moved by preceding rotary cylinder (4) in the side (5) of the side of the prosthetic limb, and can form a geometric lock.
2. The novel knee prosthesis according to claim 1, characterized in that the length of the anterior connecting rod (4) is greater than the length of the posterior connecting rod (5), the distance of the first hinge axis (211) and the fourth hinge axis (321) being greater than the distance of the second hinge axis (221) and the third hinge axis (311).
3. The novel knee joint prosthesis according to claim 2, wherein the lower cylinder seat (32) is provided with a mounting hole (322), an elastic shock absorbing member (6) is inserted into the mounting hole (322), one end of the rear connecting rod (5) close to the third hinge shaft (311) is provided with an abutting member (61), and the abutting member (61) can elastically abut against the elastic shock absorbing member (6) when the rear connecting rod (5) rotates.
4. A novel knee prosthesis according to claim 3, characterized in that the elastic damping member (6) is a damping rubber.
5. A novel knee joint prosthesis according to any one of claims 1 to 4, wherein the anterior (4) and posterior (5) links are provided in two and are disposed on each of the left and right sides of the knee joint.
6. A new knee prosthesis according to claim 5, characterized in that a connection block (7) for reinforcing the connection is connected between the two rear links (5).
7. The novel knee joint prosthesis according to any one of claims 1 to 4, wherein a threaded tube (323) is provided on the lower cylinder block (32), and one end of the lower leg prosthesis is screwed with the threaded tube (323) and can adjust the length of the connection.
8. A novel knee joint prosthesis according to any one of claims 1 to 4, wherein the thigh connecting piece (1) is provided with a tetragonal pyramid joint head (11) connected with the thigh prosthesis.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202321828878.5U CN220655739U (en) | 2023-07-12 | 2023-07-12 | Novel knee joint artificial limb |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202321828878.5U CN220655739U (en) | 2023-07-12 | 2023-07-12 | Novel knee joint artificial limb |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN220655739U true CN220655739U (en) | 2024-03-26 |
Family
ID=90353730
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202321828878.5U Active CN220655739U (en) | 2023-07-12 | 2023-07-12 | Novel knee joint artificial limb |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN220655739U (en) |
-
2023
- 2023-07-12 CN CN202321828878.5U patent/CN220655739U/en active Active
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| GR01 | Patent grant | ||
| GR01 | Patent grant |