CN102871779B - Powered below-knee prosthesis - Google Patents
Powered below-knee prosthesis Download PDFInfo
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- CN102871779B CN102871779B CN201210409290.6A CN201210409290A CN102871779B CN 102871779 B CN102871779 B CN 102871779B CN 201210409290 A CN201210409290 A CN 201210409290A CN 102871779 B CN102871779 B CN 102871779B
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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 particularly combining about a kind of main passive movement mode.
Background technology
The below-knee prosthesis using at present is mainly 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 change, patient is often forced through the deficiency that forward lean makes up propulsion capability, and amputee is more easily felt fatigue; Active artificial limb is driven by motor, can provide enough energy for health advances, thereby realize human body natural's gait, but current active artificial limb is relatively simple about the design of ankle joint, is not well positioned to meet the demand of user.In addition, the artificial limb foot plate that below-knee prosthesis is used mostly at present is wooden or plastics, be subject 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 user locomotor activity, can not meet the demand of patient to prosthetic product bionic function.
Summary of the invention
For the problems referred to above, the object 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 the sole that an employing carbon fiber board is made, described sole middle part have one make progress arch, the described end face arching is fixedly installed a bearing, described sole rear portion is provided with an elastic link being bent upwards, the top of arching described in the front portion of described elastic link is fixedly connected on, between the rear portion of described elastic link and described sole, be provided with elasticity activity space, 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, in described housing, be fixedly installed a motor, 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, on the described bearing of the end face that arches described in the bottom of described pillar is hinged on.
The carbon fiber board of making described sole adopts carbon cloth to design and produce and form through laying, 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 by paste and spray in a kind of mode be connected to the lower surface of described sole.
Described artificial limb foot plate outside is coated with a footmuff, and described footmuff adopts polyurethane material to be made.
A kind of connected mode in adopting bearing to be connected between described pillar and swivel nut and corresponding described bearing to be connected with pin.
The present invention is owing to taking above technical scheme, it has the following advantages: 1, the present invention due to 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 to below-knee prosthesis bottom, the top of swivel nut is stretched in below-knee prosthesis, and be threaded connection the leading screw of a driven by motor, therefore by motor, drive leading screw to rotate forward or backwards, can be with on movable snail sleeve, lower motion, thereby drive artificial limb foot plate to swing around the hinged joint of pillar lower end, when being walked, amputee realized the mode that main passive exercise combines, can keep human body natural's gait.2, the carbon fiber board that the present invention adopts carbon cloth to make through laying design due to sole, and carbon fiber board adopts carbon cloth to design through laying, and the carbon fiber in 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 make can both in different directions, carry out certain bending everywhere on artificial limb foot plate, realized the change flexibility function of sole of the present invention, the Deformation Demands at each position of sole while having met human motion.3, artificial limb foot plate of the present invention is owing to being provided with a sole and and being connected to the elastic link at sole middle part, and between elastic link and sole, be provided with elasticity activity space, therefore elastic link coordinates the elasticity that just can realize heel position with sole, not only can when walking, play user the effect of extraordinary energy storage and damping, and need at heel position, not connect cushion, avoided, at heel position, too much parts are set.4, the present invention, owing to being provided with wearing layer at sole or at the lower surface of sole front portion and heel shell fragment, therefore can effectively prevent sole, and heel shell fragment is worn, thereby has extended service life.5, the present invention due to sole or together with heel shell fragment be coated one with the corresponding footmuff of people's foot shape, and the replacing of footmuff and clean 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 extended the service life of artificial limb foot plate.Structure of the present invention is ingenious, and ankle structure can meet the demand of user to below-knee prosthesis ankle joint function, and it can be widely used in various patients with amputation.
Accompanying drawing explanation
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 being bent upwards 13, the front portion of elastic link 13 is fixedly connected on the arch top at position of sole 11, between the rear portion of elastic link 13 and sole 11, be provided with elasticity activity space, 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, in housing 21, be provided with a support 22, on support 22, be installed with a motor 23, 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 through the laying design of prior art, each section thickness homogeneous of carbon fiber board, and surfacing.But, carbon fiber in carbon fiber board of the present invention in each adjacent carbon fibre cloth layer need to be staggered angle to be laid, and laying angle is different, such as α=68 °, laying angle of ground floor, β=24 °, laying angle of the second layer, γ=168 °, laying angle of the 3rd layer.Make like this can in different directions, carry out certain bending everywhere on 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, and wearing layer can adopt polyurethane material, is connected to the lower surface of sole 11 by the mode of pasting or spray.
In above-described embodiment, a kind of connected mode in adopting bearing to be connected between swivel nut 26 and pillar 27 and corresponding bearing 14,12 to be connected with pin.
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 is the driving mechanism with movable snail sleeve 26 upper and lower motions by leading screw 25, also can adopt other version to replace, and connects a worm gear on the output shaft such as motor 23, worm gear and a worm engaging, the lower end of worm screw is threaded connection swivel nut 26; On output shaft such as motor 23, connect a gear again, gear and the engagement of another gear, the output shaft bottom of this gear is threaded connection swivel nut 26; On the output shaft of motor 23, connect a directive wheel for another example, the eccentric elastic link that connects of directive wheel, the other end of elastic link connects swivel nut 26 by another elastic link.
When amputee wears the present invention's campaign, comprise following several state:
1) when heel is stressed while pressing down, motor 23 drives leading screws 25 to be rotated in the forward, and leading screw 25 moves downward by thread belt movable snail sleeve 26, and the rear end that swivel nut 26 is pressed pressure foot 11 downwards, is 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 simultaneously motor 23 drives screw mandrels 25 reverse rotations, and band movable snail sleeve 26 resets, thus the moving object combining of main quilt when realizing the present invention and using
The various embodiments described above are only for illustrating the present invention, and wherein the structure of each parts, connected mode etc. all can change to some extent, and every equivalents of carrying out on the basis of technical solution of the present invention and improvement, all should not get rid of outside protection scope of the present invention.
Claims (10)
1. a 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 the sole that an employing carbon fiber board is made, described sole middle part have one make progress arch, the described end face arching is fixedly installed a bearing, described sole rear portion is provided with an elastic link being bent upwards, the top of arching described in the front portion of described elastic link is fixedly connected on, between the rear portion of described elastic link and described sole, be provided with elasticity activity space, 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, in described housing, be fixedly installed a motor, 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, on the described bearing of the end face that arches described in the bottom of described pillar is hinged on.
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 and form through laying, and the carbon fiber in each layer of carbon cloth in described carbon fiber board has different laying angles.
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. a kind of dynamic below-knee artificial limb as claimed in claim 1 or 2 or 3 or 4, it is characterized in that: described sole lower surface is provided with wearing layer, described wearing layer adopts polyurethane material, and by paste and spray in a kind of mode be connected to the lower surface of described sole.
6. a kind of dynamic below-knee artificial limb as claimed in claim 1 or 2 or 3 or 4, 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. a kind of dynamic below-knee artificial limb as described in claim 1 or 2 or 3 or 4 or 7, is characterized in that: a kind of connected mode in adopting bearing to be connected between described pillar and swivel nut and corresponding described bearing to be connected with pin.
9. a kind of dynamic below-knee artificial limb as claimed in claim 5, is characterized in that: a kind of connected mode in adopting bearing to be connected between described pillar and swivel nut and corresponding described bearing to be connected with pin.
10. a kind of dynamic below-knee artificial limb as claimed in claim 6, is characterized in that: a kind of connected mode in adopting bearing to be connected between described pillar and swivel nut and corresponding described bearing to be connected with pin.
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 CN102871779A (en) | 2013-01-16 |
| CN102871779B true CN102871779B (en) | 2014-11-05 |
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| 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) |
Families Citing this family (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 |
| 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 |
| 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 |
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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 |
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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 (6)
| Title |
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| "Effects of foot shape on energetic efficiency and dynamic stability of passive dynamic biped with upper body";Wang Q，et al;《International Journal of Humanoid Robotics》;20100630;第7卷(第2期);第295－313页 * |
| "下肢假肢步态试验机的设计";文丽 等;《中国组织工程研究与临床康复》;20081223;第12卷(第52期);第10317－10319页 * |
| 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》.2010,第7卷(第2期),第295－313页. * |
| 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》.2008,第12卷(第52期),第10317－10318页. * |
| 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）》.2009,第45卷(第4期),第565－571页. * |
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| CN102871779A (en) | 2013-01-16 |
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