CN203829096U - Customized rotary hinge type distal femur prosthesis - Google Patents
Customized rotary hinge type distal femur prosthesis Download PDFInfo
- Publication number
- CN203829096U CN203829096U CN201420272032.2U CN201420272032U CN203829096U CN 203829096 U CN203829096 U CN 203829096U CN 201420272032 U CN201420272032 U CN 201420272032U CN 203829096 U CN203829096 U CN 203829096U
- Authority
- CN
- China
- Prior art keywords
- femur
- tibia
- broach
- hinge type
- condyle
- Prior art date
- 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.)
- Expired - Lifetime
Links
- 210000000689 upper leg Anatomy 0.000 title claims abstract description 81
- 210000002303 tibia Anatomy 0.000 claims abstract description 55
- 230000008878 coupling Effects 0.000 claims description 6
- 238000010168 coupling process Methods 0.000 claims description 6
- 238000005859 coupling reaction Methods 0.000 claims description 6
- 238000012856 packing Methods 0.000 claims description 3
- 125000006850 spacer group Chemical group 0.000 claims description 3
- 210000000629 knee joint Anatomy 0.000 abstract description 14
- 230000000694 effects Effects 0.000 abstract description 4
- 210000003484 anatomy Anatomy 0.000 abstract description 3
- 210000000988 bone and bone Anatomy 0.000 abstract 2
- 230000000087 stabilizing effect Effects 0.000 abstract 1
- 108010048734 sclerotin Proteins 0.000 description 8
- 241000358276 Cryptoprocta ferox Species 0.000 description 4
- 239000000853 adhesive Substances 0.000 description 2
- 230000001070 adhesive effect Effects 0.000 description 2
- 238000005516 engineering process Methods 0.000 description 2
- 230000004899 motility Effects 0.000 description 2
- 239000011248 coating agent Substances 0.000 description 1
- 238000000576 coating method Methods 0.000 description 1
- 230000007797 corrosion Effects 0.000 description 1
- 238000005260 corrosion Methods 0.000 description 1
- 239000002360 explosive Substances 0.000 description 1
- 230000006872 improvement Effects 0.000 description 1
- 238000001356 surgical procedure Methods 0.000 description 1
- 229910052715 tantalum Inorganic materials 0.000 description 1
- GUVRBAGPIYLISA-UHFFFAOYSA-N tantalum atom Chemical compound [Ta] GUVRBAGPIYLISA-UHFFFAOYSA-N 0.000 description 1
Classifications
-
- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61F—FILTERS IMPLANTABLE INTO BLOOD VESSELS; PROSTHESES; DEVICES PROVIDING PATENCY TO, OR PREVENTING COLLAPSING OF, TUBULAR STRUCTURES OF THE BODY, e.g. STENTS; ORTHOPAEDIC, NURSING OR CONTRACEPTIVE DEVICES; FOMENTATION; TREATMENT OR PROTECTION OF EYES OR EARS; BANDAGES, DRESSINGS OR ABSORBENT PADS; FIRST-AID KITS
- A61F2/00—Filters implantable into blood vessels; Prostheses, i.e. artificial substitutes or replacements for parts of the body; Appliances for connecting them with the body; Devices providing patency to, or preventing collapsing of, tubular structures of the body, e.g. stents
- A61F2/02—Prostheses implantable into the body
- A61F2/30—Joints
- A61F2/38—Joints for elbows or knees
-
- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61F—FILTERS IMPLANTABLE INTO BLOOD VESSELS; PROSTHESES; DEVICES PROVIDING PATENCY TO, OR PREVENTING COLLAPSING OF, TUBULAR STRUCTURES OF THE BODY, e.g. STENTS; ORTHOPAEDIC, NURSING OR CONTRACEPTIVE DEVICES; FOMENTATION; TREATMENT OR PROTECTION OF EYES OR EARS; BANDAGES, DRESSINGS OR ABSORBENT PADS; FIRST-AID KITS
- A61F2/00—Filters implantable into blood vessels; Prostheses, i.e. artificial substitutes or replacements for parts of the body; Appliances for connecting them with the body; Devices providing patency to, or preventing collapsing of, tubular structures of the body, e.g. stents
- A61F2/02—Prostheses implantable into the body
- A61F2/30—Joints
- A61F2002/30001—Additional features of subject-matter classified in A61F2/28, A61F2/30 and subgroups thereof
Landscapes
- Health & Medical Sciences (AREA)
- Orthopedic Medicine & Surgery (AREA)
- Physical Education & Sports Medicine (AREA)
- Cardiology (AREA)
- Oral & Maxillofacial Surgery (AREA)
- Transplantation (AREA)
- Engineering & Computer Science (AREA)
- Biomedical Technology (AREA)
- Heart & Thoracic Surgery (AREA)
- Vascular Medicine (AREA)
- Life Sciences & Earth Sciences (AREA)
- Animal Behavior & Ethology (AREA)
- General Health & Medical Sciences (AREA)
- Public Health (AREA)
- Veterinary Medicine (AREA)
- Prostheses (AREA)
Abstract
The utility model provides a customized rotary hinge type distal femur prosthesis. The customized rotary hinge type distal femur prosthesis comprises a femoral nail, a femoral condyle, a femoral sleeve, a tibia support, a tibia nail, a connecting assembly, a tibia pad and a center device. The customized rotary hinge type distal femur prosthesis has high biocompatibility with bones. Meanwhile, the customized rotary hinge type distal femur prosthesis can be used for a long time, and has a good stabilizing effect and long service life. The customized rotary hinge type distal femur prosthesis has very high submerging resistance, anti-rotation resistance, very high wear resistance, and very strong sticking effect on the bones of human body. Moreover, the structure of the prosthesis is closer to the knee joint structure of human body, the consistence with the human anatomy is enhanced, the patient compliance is improved, the replacement times are reduced, and the cost is reduced.
Description
Technical field
This utility model relates to a kind of knee-joint prosthesis, particularly a kind of customization rotary hinge type distal femur prosthese.
Background technology
The knee joint of human body has the functions such as heavy burden, transmitted load, and it is maximum in human body, the most complicated joint, has maximum stability while stretching, and has suitable motility when crooked, to realize the actions such as the walking of human body, race; Therefore knee joint is to be also the most easily subject to and the prosthese that is replaced; Current knee-joint prosthesis is widely used in joint replacement surgery, and existing knee-joint prosthesis and sclerotin have good biocompatibility and corrosion resistance, for example CN203280543 discloses a kind of micropore tantalum coating assembly type rotation knee-joint prosthesis; CN101584615 discloses a kind of new axial center type knee joint prosthesis; Disclosed knee-joint prosthesis has good primary stability above, and biocompatibility; But the junction that above-mentioned knee-joint prosthesis also exists between femoral prosthesis and tibial prosthesis easily produces friction and collision; Although femoral prosthesis and tibial prosthesis have certain biocompatibility with sclerotin simultaneously, the shortcoming that the long-time use of this prosthese still exists and rotates, life-time service poor stability.
Utility model content
In order to solve the problems of the technologies described above, this utility model provides a kind of customization rotary hinge type distal femur prosthese, and it has good fixed effect, and has the advantages that life-time service stability is high.
The concrete technical scheme of this utility model is as follows:
This utility model provides a kind of customization rotary hinge type distal femur prosthese, and this customization rotary hinge type distal femur prosthese comprises femur broach, condyle of femur, femur cover, tibia support, tibia broach, coupling assembling, tibia pad and middle-device, wherein,
Condyle of femur is fixed on femur broach bottom, comprises intercondylar fossa, condyle faying face that two condyles, two condyle fronts limit, the platform in the middle of being positioned at, is arranged at locating slot on condyle faying face, is arranged at the pin shaft hole of platform two sides and is arranged at the connecting hole at intercondylar fossa middle part;
Femur cover is placed on femur broach bottom, and offsets with the locating slot of condyle of femur;
Tibia support top is provided with rotary gemel post, and is fixed on tibia broach top; The tibia broach outer surface being connected with tibia support lower surface is provided with keeper;
Coupling assembling comprises Assembly of pin and adapter;
The two sides of adapter are provided with the second pin shaft hole, and bottom is provided with the centre bore of longitudinal extension; Described adapter inserts in the connecting hole of condyle of femur;
Assembly of pin comprises the rotatable bearing pin enclosing cover that is arranged in the bearing pin of pin shaft hole and the second pin shaft hole, the axle sleeve that is arranged at bearing pin one side and bearing pin packing ring and is arranged at bearing pin opposite side;
Assembly of pin is connected condyle of femur with adapter, make adapter take bearing pin as axle rotation;
Rotary gemel post inserts the centre bore of adapter; Condyle of femur is connected with tibia support;
Described tibia pad is arranged between condyle of femur and tibia support;
Described tibia broach bottom is connected with middle-device.
Customization rotary hinge type distal femur prosthese of the present utility model has good stability, condyle of femur is connected with adapter by Assembly of pin simultaneously, adapter is connected with the rotary gemel post on tibia support again, its knee-joint prosthesis forming has good motility, can realize the functions such as rotation that human body knee joint has.
Further improve, the top of described femur cover is provided with cushion block, and bottom sides is also provided with femur sections-Sai.
In order to reduce friction and the collision between adapter and rotary gemel post, between the centre bore of adapter and rotary gemel post, be provided with column lining.
In order to guarantee that adapter can rotate relatively with femoral intercondylar, and guarantee that upright function, adapter are provided with the spacer pin coordinating with condyle of femur bottom.
In order to stablize tibia support and tibia pad, make the two difficult drop-off, tibia support and tibia pad are fixed by anti-dislocation lock screw.
In order further to improve femur broach and sclerotin biocompatibility, improve anti-sinking and rotational resistance, described femur broach is provided with the semi-circular grooves of longitudinal extension.
In order to improve the biocompatibility of tibia broach and sclerotin, improve anti-sinking and rotational resistance, described tibia broach is provided with taper type fin along the outer circle wall of horizontal end face, and the diameter of described taper type fin cross section reduces gradually to the direction of tibia broach far-end; This taper type fin outer surface is provided with to the recess of tibia broach remote extension.
This is novel provides a kind of customization rotary hinge type distal femur prosthese; This distal femur prosthese and sclerotin have good biocompatibility, use for a long time simultaneously, and stablizing effect is good, long service life; And this distal femur prosthese has good anti-sinking and anti-rotational resistance, tool has good wearability, the sclerotin of human body is had to very strong adhesive attraction, and the structure of this prosthese and the knee joint structure of human body are more approaching, more meet human anatomy structure, improve patient's compliance, reduced replacing number of times, reduced cost.
Accompanying drawing explanation
Fig. 1 is the structural representation of the customization rotary hinge type distal femur prosthese of embodiment 1;
Fig. 2 is the explosive view of the customization rotary hinge type distal femur prosthese of embodiment 1;
Fig. 3 is the structural representation of the customization rotary hinge type distal femur prosthese of embodiment 2.
The specific embodiment
Embodiment 1
This utility model provides a kind of customization rotary hinge type distal femur prosthese, as depicted in figs. 1 and 2, this customization rotary hinge type distal femur prosthese comprises femur broach 1, condyle of femur 2, femur cover 3, tibia support 4, tibia broach 5, coupling assembling, tibia pad 7 and middle-device 8, wherein, condyle of femur 2 is fixed on femur broach 1 bottom, comprise two condyles 21, two intercondylar fossas that condyle 21 fronts limit, condyle faying face, platform in the middle of being positioned at, be arranged at the locating slot 24 on condyle faying face, be arranged at the pin shaft hole 25 of platform two sides and be arranged at the connecting hole at intercondylar fossa middle part,
Femur cover 3 is placed on femur broach 1 bottom, and offsets with the locating slot 24 of condyle of femur 2;
Tibia support 4 tops are provided with rotary gemel post 41, and are fixed on tibia broach 5 tops; Tibia broach 5 outer surfaces that are connected with described tibia support 4 lower surfaces are provided with keeper;
Described coupling assembling comprises Assembly of pin and adapter 10;
The two sides of described adapter 10 are provided with the second pin shaft hole 11, and bottom is provided with the centre bore of longitudinal extension; Described adapter 10 inserts in the connecting hole of condyle of femur 2;
Assembly of pin comprises the rotatable bearing pin enclosing cover 94 that is arranged in the bearing pin 91 of pin shaft hole 25 and the second pin shaft hole 11, the axle sleeve 92 that is arranged at bearing pin 91 1 sides and bearing pin packing ring 93 and is arranged at bearing pin 91 opposite sides;
Assembly of pin is connected condyle of femur 1 with adapter 10, make adapter 10 take bearing pin 91 as axle rotation;
Rotary gemel post 41 inserts the centre bore of adapter 10; Condyle of femur 2 is connected with tibia support 4;
Tibia pad 7 is arranged between condyle of femur 2 and tibia support 4;
Tibia broach 5 bottoms are connected with middle-device 8; The top of femur cover 3 is provided with cushion block 31, and bottom sides is also provided with femur sections-Sai 32; Between the centre bore of adapter 10 and rotary gemel post 41, be provided with column lining 12; Adapter 10 is provided with the spacer pin 13 coordinating with condyle of femur 2 bottoms; Tibia support 4 and tibia pad 7 are fixing by anti-dislocation lock screw 14; Femur broach 1 is provided with the semi-circular grooves 16 of longitudinal extension.
Embodiment 2
This utility model provides a kind of customization rotary hinge type distal femur prosthese, as shown in Figure 3, this customization rotary hinge type distal femur prosthese as different from Example 3, described tibia broach 5 is provided with taper type fin 18 along the outer circle wall of horizontal end face, and the diameter of these taper type fin 18 cross sections reduces gradually to the direction of tibia broach 5 far-ends; Taper type fin 18 outer surfaces are provided with to the recess 19 of tibia broach 5 remote extensions.
This is novel provides a kind of customization rotary hinge type distal femur prosthese; This distal femur prosthese and sclerotin have good biocompatibility, use for a long time simultaneously, and stablizing effect is good, long service life; And this distal femur prosthese has good anti-sinking and anti-rotational resistance, tool has good wearability, the sclerotin of human body is had to very strong adhesive attraction, and the structure of this prosthese and the knee joint structure of human body are more approaching, more meet human anatomy structure, improve patient's compliance, reduced replacing number of times, reduced cost.
The above embodiment is only that preferred implementation of the present utility model is described; not scope of the present utility model is limited; do not departing under the prerequisite of this utility model design spirit; various distortion and improvement that those of ordinary skills make the technical solution of the utility model, all should fall in the definite protection domain of claims of the present utility model.
Claims (7)
1. one kind customizes rotary hinge type distal femur prosthese, comprise femur broach (1), condyle of femur (2), femur cover (3), tibia support (4), tibia broach (5), coupling assembling, tibia pad (7) and middle-device (8), it is characterized in that
Described condyle of femur (2) is fixed on femur broach (1) bottom, comprises intercondylar fossa, condyle faying face that two condyles (21), two condyles (21) front limit, the platform in the middle of being positioned at, is arranged at locating slot (24) on condyle faying face, is arranged at the pin shaft hole (25) of platform two sides and is arranged at the connecting hole at intercondylar fossa middle part;
Described femur cover (3) is placed on femur broach (1) bottom, and offsets with the locating slot (24) of condyle of femur (2);
Described tibia support (4) top is provided with rotary gemel post (41), and is fixed on tibia broach (5) top; Tibia broach (5) outer surface being connected with described tibia support (4) lower surface is provided with keeper;
Described coupling assembling comprises Assembly of pin and adapter (10);
The two sides of described adapter (10) are provided with the second pin shaft hole (11), and bottom is provided with the centre bore of longitudinal extension; Described adapter (10) inserts in the connecting hole of condyle of femur (2);
Described Assembly of pin comprises the rotatable bearing pin enclosing cover (94) that is arranged in the bearing pin (91) of pin shaft hole (25) and the second pin shaft hole (11), the axle sleeve (92) that is arranged at bearing pin (91) one sides and bearing pin packing ring (93) and is arranged at bearing pin (91) opposite side;
Described Assembly of pin is connected condyle of femur (2) with adapter (10), make adapter (10) take bearing pin (91) as axle rotation;
Described rotary gemel post (41) inserts the centre bore of adapter (10); Condyle of femur (2) is connected with tibia support (4);
Described tibia pad (7) is arranged between condyle of femur (2) and tibia support (4);
Described tibia broach (5) bottom is connected with middle-device (8).
2. customization rotary hinge type distal femur prosthese as claimed in claim 1, the top of described femur cover (3) is provided with cushion block (31), and bottom sides is also provided with femur sections-Sai (32).
3. customization rotary hinge type distal femur prosthese as claimed in claim 1, is characterized in that, between the centre bore of described adapter (10) and rotary gemel post (41), is provided with column lining (12).
4. customization rotary hinge type distal femur prosthese as claimed in claim 1, is characterized in that, described adapter (10) is provided with the spacer pin (13) coordinating with column lining (12).
5. customization rotary hinge type distal femur prosthese as claimed in claim 1, is characterized in that, described tibia support (4) and tibia pad (7) are fixing by anti-dislocation lock screw (14).
6. customization rotary hinge type distal femur prosthese as claimed in claim 1, is characterized in that, described femur broach (1) is provided with the semi-circular grooves (16) of longitudinal extension.
7. customization rotary hinge type distal femur prosthese as claimed in claim 1, it is characterized in that, described tibia broach (5) is provided with taper type fin (18) along the outer circle wall of horizontal end face, and the diameter of described taper type fin (18) cross section reduces gradually to the direction of tibia broach (5) far-end; Described taper type fin (18) outer surface is provided with to the recess (19) of tibia broach (5) proximal extension.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420272032.2U CN203829096U (en) | 2014-05-26 | 2014-05-26 | Customized rotary hinge type distal femur prosthesis |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420272032.2U CN203829096U (en) | 2014-05-26 | 2014-05-26 | Customized rotary hinge type distal femur prosthesis |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN203829096U true CN203829096U (en) | 2014-09-17 |
Family
ID=51506996
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201420272032.2U Expired - Lifetime CN203829096U (en) | 2014-05-26 | 2014-05-26 | Customized rotary hinge type distal femur prosthesis |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN203829096U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112741714A (en) * | 2021-01-20 | 2021-05-04 | 北京积水潭医院 | Prosthesis capable of extending joint of lower limb |
| CN113069246A (en) * | 2021-03-31 | 2021-07-06 | 北京市春立正达医疗器械股份有限公司 | Double-acting knee joint prosthesis |
-
2014
- 2014-05-26 CN CN201420272032.2U patent/CN203829096U/en not_active Expired - Lifetime
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112741714A (en) * | 2021-01-20 | 2021-05-04 | 北京积水潭医院 | Prosthesis capable of extending joint of lower limb |
| CN112741714B (en) * | 2021-01-20 | 2023-06-20 | 北京积水潭医院 | Can prolong low limbs joint prosthesis |
| CN113069246A (en) * | 2021-03-31 | 2021-07-06 | 北京市春立正达医疗器械股份有限公司 | Double-acting knee joint prosthesis |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CX01 | Expiry of patent term |
Granted publication date: 20140917 |
|
| CX01 | Expiry of patent term |