SU1391642A1 - Prosthesis for lower extremity - Google Patents
Prosthesis for lower extremity Download PDFInfo
- Publication number
- SU1391642A1 SU1391642A1 SU864087576A SU4087576A SU1391642A1 SU 1391642 A1 SU1391642 A1 SU 1391642A1 SU 864087576 A SU864087576 A SU 864087576A SU 4087576 A SU4087576 A SU 4087576A SU 1391642 A1 SU1391642 A1 SU 1391642A1
- Authority
- SU
- USSR - Soviet Union
- Prior art keywords
- prosthesis
- wedges
- bolts
- lower extremity
- fixation
- Prior art date
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Landscapes
- Prostheses (AREA)
Description
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Изобретение относитс к медицине, в Частности к протезированию и про- тезостроению.The invention relates to medicine, in particular to prosthetics and prosthetics.
Целью изобретени вл етс сниже- ние контактных напр жений в местах соединени клиньев с болтами при повышении надежности фиксации.The aim of the invention is to reduce the contact stresses at the junctions of the wedges with the bolts, while increasing the fixing reliability.
На фиг. 1 схематически изображен внешний вид протеза бедра спредлагае- мым устройством, на фиг. 2 - сферическое основание с клином, вид сбоку.FIG. 1 is a schematic representation of the appearance of a hip prosthesis using a device; FIG. 2 - spherical base with a wedge, side view.
Протез нижней конечности содержит приемную гильзу 1, коленный узел 2, трубку голени 3 и стопу со щиколот- кой 4, соединенные между собой последовательно посредством узлов фиксации 5, состо щих из стакана 6 со сферическим основанием и зажимных болтов 7 ввернутых 13 резьбовые отверсти сТа- кана 6f а также сферического злемен- та 8 с клином 9, вдоль оси которого выполнено глухое отверстие, в котором с нат гом установлена бабышка 10.The lower limb prosthesis contains the receiving sleeve 1, the knee assembly 2, the lower leg tube 3 and the foot with the ankle 4, connected to each other in series by means of fixing assemblies 5 consisting of a cup 6 with a spherical base and clamping bolts 7 screwed 13 threaded holes cT- Kana 6f as well as a spherical element 8 with a wedge 9, along the axis of which a blind hole is made, in which the female 10 is installed with tension.
При ходьбе на протезе бедра пред- ложенной конструкции в месте контакта клиньев 9 с зажимными болтами 7 возникают контактные сжимающие напр жени , величина которых незначительна и близка к нулю. Это обусловлено созданием предварительных раст гивающих напр жений по наружной поверхности клиньев 9, вызванных запрессовкой бобышек 10. Эти напр жени вычитаютс от сжимающих напр жений, возникающих при контакте клиньев 9 с болтами 7.When walking on the hip prosthesis of the proposed construction, at the point of contact of the wedges 9 with the clamping bolts 7, contact compressive stresses arise, the magnitude of which is insignificant and close to zero. This is due to the creation of pre-tensile stresses along the outer surface of the wedges 9, caused by pressing the bosses 10. These stresses are subtracted from the compressive stresses that occur when the wedges 9 come into contact with the bolts 7.
Claims (1)
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
SU864087576A SU1391642A1 (en) | 1986-07-07 | 1986-07-07 | Prosthesis for lower extremity |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
SU864087576A SU1391642A1 (en) | 1986-07-07 | 1986-07-07 | Prosthesis for lower extremity |
Publications (1)
Publication Number | Publication Date |
---|---|
SU1391642A1 true SU1391642A1 (en) | 1988-04-30 |
Family
ID=21245240
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
SU864087576A SU1391642A1 (en) | 1986-07-07 | 1986-07-07 | Prosthesis for lower extremity |
Country Status (1)
Country | Link |
---|---|
SU (1) | SU1391642A1 (en) |
Cited By (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US5139524A (en) * | 1990-01-18 | 1992-08-18 | Prosthetics Research Study | Prosthetic alignment device supplementally secured by a hoop stress |
US5458657A (en) * | 1991-12-19 | 1995-10-17 | Becker Orthopedic Appliance Company | Endoskeletal prosthesis having adjustable coupling |
-
1986
- 1986-07-07 SU SU864087576A patent/SU1391642A1/en active
Non-Patent Citations (1)
Title |
---|
Патент DE f 1922619, кл. А 61 F 1/04, 1970. * |
Cited By (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US5139524A (en) * | 1990-01-18 | 1992-08-18 | Prosthetics Research Study | Prosthetic alignment device supplementally secured by a hoop stress |
US5458657A (en) * | 1991-12-19 | 1995-10-17 | Becker Orthopedic Appliance Company | Endoskeletal prosthesis having adjustable coupling |
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