CN102871779A - Powered below-knee prosthesis - Google Patents
Powered below-knee prosthesis Download PDFInfo
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- CN102871779A CN102871779A CN2012104092906A CN201210409290A CN102871779A CN 102871779 A CN102871779 A CN 102871779A CN 2012104092906 A CN2012104092906 A CN 2012104092906A CN 201210409290 A CN201210409290 A CN 201210409290A CN 102871779 A CN102871779 A CN 102871779A
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- artificial limb
- sole
- knee
- bearing
- elastic link
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Abstract
The invention relates to a powered below-knee prosthesis which is characterized by comprising a prosthesis foot and a prosthesis shank. The prosthesis foot is made of carbon fiber boards. An upward arch is arranged in the middle of the prosthesis foot. A support is fixed to the top surface of the arch. An elastic connecting rod bending upwards is disposed at the rear of the prosthesis foot. The front of the elastic connecting rod is fixedly connected to the top of the arch. An elastic moving space is arranged between the rear of the elastic connecting rod and the prosthesis foot. Another support is disposed on the top surface of the rear of the elastic connecting rod. The prosthesis shank comprises a shell which simulates the shape of a human shank. A motor is fixed in the shell. An output end of the motor is connected with a screw. The screw is connected with a screw sleeve in a threaded manner. The bottom end of the screw sleeve penetrates out of the shell and is connected to the support on the top surface of the elastic connecting rod. A support column is disposed at the bottom, in front of the screw sleeve, of the shell. The bottom end of the support column is hinged to the support on the top surface of the arch. The powered below-knee prosthesis is widely applicable to various amputation patients.
Description
Technical field
The present invention relates to a kind of human body artificial limb, the dynamic below-knee artificial limb that particularly combines about a kind of main passive movement mode.
Background technology
The below-knee prosthesis that uses at present mainly is divided into passive type artificial limb and active artificial limb, the ankle joint of passive type artificial limb adopts single shaft ankle or multi-axis foot adaptor etc., the problem of its existence is that walking speed can not naturally, optionally be followed the variation of amputee's walking speed and changed, the patient often is forced through the deficiency that forward lean remedies propulsion capability, and the amputee is more easily felt fatigue; Active artificial limb can provide enough energy for health advances by motor-driven, thereby realizes human body natural's gait, but present active artificial limb is relatively simple about the design of ankle joint, can not well satisfy the demand of user.In addition, the artificial limb foot plate of at present below-knee prosthesis use mostly is wooden or plastics, be subjected to the restriction of material own, forefoot and the heel of artificial limb foot plate are more stiff, the deformation requirements that can not meet normal gait, affect the user locomotor activity, can not satisfy the patient to the demand of prosthetic product bionic function.
Summary of the invention
For the problems referred to above, the purpose of this invention is to provide the motion of a kind of ankle joint position flexibly, the dynamic below-knee artificial limb that main passive movement mode combines.
For achieving the above object, the present invention takes following technical scheme: a kind of dynamic below-knee artificial limb is characterized in that: it comprises an artificial limb foot plate and a below-knee prosthesis; Described artificial limb foot plate comprises a sole that adopts carbon fiber board to be made, described sole middle part have one make progress arch, the described end face that arches is fixedly installed a bearing, described sole rear portion is provided with an elastic link that is bent upwards, the front portion of described elastic link is fixedly connected on described top of arching, be provided with the elasticity activity space between the rear portion of described elastic link and the described sole, described elastic link rear portion end face is provided with another bearing; Described below-knee prosthesis comprises the housing that simulation human body shank shape is made, be fixedly installed a motor in the described housing, the outfan of described motor connects a leading screw, described leading screw is threaded connection a swivel nut, described swivel nut bottom passes on the described bearing that described housing is connected to described elastic link end face, the housing bottom in described swivel nut the place ahead is provided with a pillar, and the bottom of described pillar is hinged on the described bearing of the described end face that arches.
The carbon fiber board of making described sole adopts carbon cloth to design and produce through laying and forms, and the carbon fiber in the carbon cloth of the adjacent layer of described carbon fiber board is staggered laying angle.
Described elastic link adopts spring steel to be made, and is bolted at described sole end face.
Described sole lower surface is provided with wearing layer, and described wearing layer adopts polyurethane material, and is connected to the lower surface of described sole by a kind of mode in stickup and the spraying.
Described artificial limb foot plate outside is coated with a footmuff, and described footmuff adopts polyurethane material to be made.
Adopt bearing to be connected and a kind of connected mode during pin is connected between described pillar and swivel nut and the corresponding described bearing.
The present invention is owing to taking above technical scheme, it has the following advantages: 1, the present invention since be provided with one with the corresponding artificial limb foot plate of human body sole shape, at the hinged pillar in the heel end face interval of artificial limb foot plate and a swivel nut, the top of pillar is fixed on the below-knee prosthesis bottom, the top of swivel nut is stretched in the below-knee prosthesis, and be threaded connection the leading screw of a driven by motor, therefore rotate forward or backwards by the motor-driven leading screw, can be with on the movable snail sleeve, lower motion, thereby drive artificial limb foot plate around the hinged joint swing of pillar lower end, realize the mode that main passive exercise combines when the amputee is walked, can keep human body natural's gait.2, the present invention is because the carbon fiber board that sole adopts carbon cloth to make through the laying design, and carbon fiber board adopts carbon cloth to design through laying, and the carbon fiber in the carbon fiber board in each adjacent carbon fibre cloth layer is staggered angle and lays, therefore not only make lighter weight of the present invention, and so that can both carry out certain bending in different directions everywhere on the artificial limb foot plate, realized the change flexibility function of sole of the present invention, the Deformation Demands at each position of sole when having satisfied human motion.3, artificial limb foot plate of the present invention is owing to being provided with the elastic link that a sole and is connected to the sole middle part, and between elastic link and sole, be provided with the elasticity activity space, therefore elastic link cooperates the elasticity that just can realize the heel position with sole, not only can when walking, play user the effect of extraordinary energy storage and damping, and need to not connect cushion at the heel position, avoided at the heel position too much parts being set.4, therefore the present invention can effectively prevent sole owing to being provided with wearing layer at sole or at the lower surface of sole front portion and heel shell fragment, and the heel shell fragment is worn, thereby has prolonged service life.5, the present invention since sole or together with the heel shell fragment coated one with the corresponding footmuff of people's foot shape, and the replacing of footmuff and cleaning are also very convenient, therefore, the present invention can avoid the anterior and direct kiss the earth of heel shell fragment of sole or sole and the wearing and tearing that cause, thereby has further prolonged the service life of artificial limb foot plate.Structure of the present invention is ingenious, and the ankle structure can satisfy user to the demand of below-knee prosthesis ankle joint function, and it can be widely used in various patients with amputation.
Description of drawings
Fig. 1 is overall structure schematic diagram of the present invention
Fig. 2 is the inside laying schematic diagram of artificial limb foot plate of the present invention
The specific embodiment
Below in conjunction with drawings and Examples the present invention is described in detail.
As shown in Figure 1, the present invention includes an artificial limb foot plate 1 and a below-knee prosthesis 2, can also comprise that one is coated on the footmuff 3 of artificial limb foot plate 1 outside.
Artificial limb foot plate 1 of the present invention comprises a sole 11, and the middle part of sole 11 has higher arching, and sole 11 end faces at the position of arching are fixedly installed a bearing 12.Sole 11 rear portions are provided with an elastic link that is bent upwards 13, the front portion of elastic link 13 is fixedly connected on the arch top at position of sole 11, be provided with the elasticity activity space between the rear portion of elastic link 13 and the sole 11, and be fixedly installed another bearing 14 at the top, rear end of elastic link 13.
Below-knee prosthesis 2 of the present invention comprises the housing 21 that simulation human body shank shape is made, be provided with a support 22 in the housing 21, be installed with a motor 23 on the support 22, the outfan of motor 23 connects a leading screw 25 by a shaft coupling 24, leading screw 25 bottoms are threaded connection a swivel nut 26, and the bottom of swivel nut 26 passes on the bearing 14 that housing 21 is hinged on elastic link 13 tops; Housing 21 bottoms in swivel nut 26 the place aheads are provided with a pillar 27, and pillar 27 can be to be fixedly connected on housing 21 bottoms, also can be one-body molded with housing 21.Pillar 27 bottom-hinged are on sole 11 arches the bearing 12 at position.
As shown in Figure 2, sole 11 of the present invention adopts carbon fiber board to be made, and carbon fiber board adopts carbon cloth to be made each section thickness homogeneous of carbon fiber board, and surfacing through the laying design of prior art.But, carbon fiber in the carbon fiber board of the present invention in each adjacent carbon fibre cloth layer need to be staggered angle to be laid, and namely the laying angle is different, such as the laying angle α of ground floor=68 °, the laying angle β of the second layer=24 °, Y=168 ° at the 3rd layer laying angle.Like this so that can both carry out certain bending in different directions everywhere on the sole 11.
The present invention can arrange in the outside of artificial limb foot plate 1 footmuff 3 corresponding to people's foot shape, and footmuff 3 can adopt polyurethane material to be made, and has the performances such as corrosion-resistant, wear-resistant and electric insulation.
In above-described embodiment, motor 23 has independently power supply unit, and the output shaft of motor 23 can rotate forward or backwards.
In above-described embodiment, the lower surface of sole 11 is provided with wearing layer 15, and wearing layer 15 can adopt polyurethane material, is connected to the lower surface of sole 11 by the mode of pasting or spray.
In above-described embodiment, adopt bearing to be connected and a kind of connected mode during pin is connected between swivel nut 26 and pillar 27 and the corresponding bearing 14,12.
In above-described embodiment, elastic link 13 adopts spring steel to be made, and is fixedly connected on sole 11 end faces by bolt or other connectors.
In above-described embodiment, motor 23 also can adopt other version to replace by the driving mechanism of leading screw 25 with movable snail sleeve 26 upper and lower motions, such as connecting a worm gear on the output shaft of motor 23, worm gear and a worm engaging, the lower end of worm screw is threaded connection swivel nut 26; Such as connecting a gear on the output shaft of motor 23, gear and another gear mesh again, and the output shaft bottom of this gear is threaded connection swivel nut 26; Connect for another example a directive wheel on the output shaft of motor 23, the eccentric elastic link that connects of directive wheel, the other end of elastic link connects swivel nut 26 by another elastic link.
When the amputee wears the present invention's campaign, comprise following several state:
1) when heel is stressed when pressing down, motor 23 drives leading screws 25 and is rotated in the forward, and leading screw 25 moves downward by thread belt movable snail sleeve 26, and the rear ends that swivel nut 26 is pressed pressure foot 11 downwards are bent downwardly sole 11 rear ends, thus storage power.
2) when heel lift, the rear end of sole 11 discharges the energy of its storage, and sole 11 can easily be resetted, and motor 23 drives screw mandrel 25 reverse rotations simultaneously, and band movable snail sleeve 26 resets, thus the passive purpose that combines of master when realization the present invention uses
The various embodiments described above only are used for explanation the present invention, and wherein the structure of each parts, connected mode etc. all can change to some extent, and every equivalents and improvement of carrying out on the basis of technical solution of the present invention all should do not got rid of outside protection scope of the present invention.
Claims (10)
1. dynamic below-knee artificial limb, it is characterized in that: it comprises an artificial limb foot plate and a below-knee prosthesis; Described artificial limb foot plate comprises a sole that adopts carbon fiber board to be made, described sole middle part have one make progress arch, the described end face that arches is fixedly installed a bearing, described sole rear portion is provided with an elastic link that is bent upwards, the front portion of described elastic link is fixedly connected on described top of arching, be provided with the elasticity activity space between the rear portion of described elastic link and the described sole, described elastic link rear portion end face is provided with another bearing; Described below-knee prosthesis comprises the housing that simulation human body shank shape is made, be fixedly installed a motor in the described housing, the outfan of described motor connects a leading screw, described leading screw is threaded connection a swivel nut, described swivel nut bottom passes on the described bearing that described housing is connected to described elastic link end face, the housing bottom in described swivel nut the place ahead is provided with a pillar, and the bottom of described pillar is hinged on the described bearing of the described end face that arches.
2. a kind of dynamic below-knee artificial limb as claimed in claim 1 is characterized in that: the carbon fiber board of making described sole adopts carbon cloth to design and produce through laying and forms, and the carbon fiber in the carbon cloth of the adjacent layer of described carbon fiber board is staggered laying angle.
3. a kind of dynamic below-knee artificial limb as claimed in claim 1 is characterized in that: described elastic link adopts spring steel to be made, and is bolted at described sole end face.
4. a kind of dynamic below-knee artificial limb as claimed in claim 2 is characterized in that: described elastic link adopts spring steel to be made, and is bolted at described sole end face.
5. as claimed in claim 1 or 2 or 3 or 4 a kind of dynamic below-knee artificial limb, it is characterized in that: described sole lower surface is provided with wearing layer, described wearing layer adopts polyurethane material, and is connected to the lower surface of described sole by a kind of mode in stickup and the spraying.
6. as claimed in claim 1 or 2 or 3 or 4 a kind of dynamic below-knee artificial limb, it is characterized in that: described artificial limb foot plate outside is coated with a footmuff, and described footmuff adopts polyurethane material to be made.
7. a kind of dynamic below-knee artificial limb as claimed in claim 5 is characterized in that: described artificial limb foot plate outside is coated with a footmuff, and described footmuff adopts polyurethane material to be made.
8. such as claim 1 or 2 or 3 or 4 or 7 described a kind of dynamic below-knee artificial limbs, it is characterized in that: adopt bearing to be connected and a kind of connected mode during pin is connected between described pillar and swivel nut and the corresponding described bearing.
9. a kind of dynamic below-knee artificial limb as claimed in claim 5 is characterized in that: adopt bearing to be connected and a kind of connected mode during pin is connected between described pillar and swivel nut and the corresponding described bearing.
10. a kind of dynamic below-knee artificial limb as claimed in claim 6 is characterized in that: adopt bearing to be connected and a kind of connected mode during pin is connected between described pillar and swivel nut and the corresponding described bearing.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201210409290.6A CN102871779B (en) | 2012-10-24 | 2012-10-24 | Powered below-knee prosthesis |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201210409290.6A CN102871779B (en) | 2012-10-24 | 2012-10-24 | Powered below-knee prosthesis |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN102871779A true CN102871779A (en) | 2013-01-16 |
| CN102871779B CN102871779B (en) | 2014-11-05 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201210409290.6A Active CN102871779B (en) | 2012-10-24 | 2012-10-24 | Powered below-knee prosthesis |
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| CN (1) | CN102871779B (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108143524A (en) * | 2017-12-27 | 2018-06-12 | 大连民族大学 | A kind of leg artificial limb |
| CN108309424A (en) * | 2018-01-18 | 2018-07-24 | 江苏百易得医疗科技有限公司 | A kind of distal radial palmar lockplate |
| CN108395671A (en) * | 2018-01-18 | 2018-08-14 | 江苏百易得医疗科技有限公司 | A kind of PEEK composite material and its manufacturing methods |
Citations (8)
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|---|---|---|---|---|
| GB1371996A (en) * | 1973-05-08 | 1974-10-30 | Blatchford & Sons Ltd | Artificial leg and foot assembly |
| US5486209A (en) * | 1989-04-13 | 1996-01-23 | Phillips; Van L. | Foot prosthesis having auxiliary ankle construction |
| US5776205A (en) * | 1991-02-28 | 1998-07-07 | Phillips; Van L. | Split foot prosthesis |
| KR100401457B1 (en) * | 2000-11-27 | 2003-10-10 | 산재의료관리원 | Multi-functioning artificial foot |
| CN1988861A (en) * | 2004-05-28 | 2007-06-27 | 奥瑟工程公司 | Foot prosthesis with resilient multi-axial ankle |
| CN201131821Y (en) * | 2007-12-21 | 2008-10-15 | 德林股份有限公司 | Artificial limb device actuating knee joint to bend by foot disc |
| CN101912320A (en) * | 2010-08-24 | 2010-12-15 | 北京大学 | Dynamic below-knee artificial limb containing flexible dynamic ankle joints and toe joints |
| CN102137641A (en) * | 2008-07-01 | 2011-07-27 | 奥瑟Hf公司 | Smooth rollover insole for prosthetic foot |
-
2012
- 2012-10-24 CN CN201210409290.6A patent/CN102871779B/en active Active
Patent Citations (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB1371996A (en) * | 1973-05-08 | 1974-10-30 | Blatchford & Sons Ltd | Artificial leg and foot assembly |
| US5486209A (en) * | 1989-04-13 | 1996-01-23 | Phillips; Van L. | Foot prosthesis having auxiliary ankle construction |
| US5776205A (en) * | 1991-02-28 | 1998-07-07 | Phillips; Van L. | Split foot prosthesis |
| KR100401457B1 (en) * | 2000-11-27 | 2003-10-10 | 산재의료관리원 | Multi-functioning artificial foot |
| CN1988861A (en) * | 2004-05-28 | 2007-06-27 | 奥瑟工程公司 | Foot prosthesis with resilient multi-axial ankle |
| CN201131821Y (en) * | 2007-12-21 | 2008-10-15 | 德林股份有限公司 | Artificial limb device actuating knee joint to bend by foot disc |
| CN102137641A (en) * | 2008-07-01 | 2011-07-27 | 奥瑟Hf公司 | Smooth rollover insole for prosthetic foot |
| CN101912320A (en) * | 2010-08-24 | 2010-12-15 | 北京大学 | Dynamic below-knee artificial limb containing flexible dynamic ankle joints and toe joints |
Non-Patent Citations (3)
| Title |
|---|
| WANG Q，ET AL: ""Effects of foot shape on energetic efficiency and dynamic stability of passive dynamic biped with upper body"", 《INTERNATIONAL JOURNAL OF HUMANOID ROBOTICS》 * |
| 文丽 等: ""下肢假肢步态试验机的设计"", 《中国组织工程研究与临床康复》 * |
| 黄岩 等: ""半被动双足机器人动态行走的位姿估算"", 《北京大学学报（自然科学版）》 * |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108143524A (en) * | 2017-12-27 | 2018-06-12 | 大连民族大学 | A kind of leg artificial limb |
| CN108309424A (en) * | 2018-01-18 | 2018-07-24 | 江苏百易得医疗科技有限公司 | A kind of distal radial palmar lockplate |
| CN108395671A (en) * | 2018-01-18 | 2018-08-14 | 江苏百易得医疗科技有限公司 | A kind of PEEK composite material and its manufacturing methods |
Also Published As
| Publication number | Publication date |
|---|---|
| CN102871779B (en) | 2014-11-05 |
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