CN205107980U - With bionical joint replacement false body of displacing joint looks adaptation - Google Patents
With bionical joint replacement false body of displacing joint looks adaptation Download PDFInfo
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- CN205107980U CN205107980U CN201520853434.6U CN201520853434U CN205107980U CN 205107980 U CN205107980 U CN 205107980U CN 201520853434 U CN201520853434 U CN 201520853434U CN 205107980 U CN205107980 U CN 205107980U
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- prosthese
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- replacement
- false body
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- 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
- A61F2/32—Joints for the hip
- A61F2/36—Femoral heads ; Femoral endoprostheses
-
- 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
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- Health & Medical Sciences (AREA)
- Orthopedic Medicine & Surgery (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 with bionical joint replacement false body of displacing joint looks adaptation, belongs to orthopedic medical equipment technical field for total joint replacement surgery. Its technical scheme is: the utility model discloses a false body head, the false body lower part of joint replacement false body are hollow structure to the volume of the sclerotin that the overall volume and weight and the replacement that make replacement false body in joint through three -dimensional design were got rid of equals with weight, makes replacement joint prosthesis have better human suitability, avoids the load of increase trouble limb muscle, has also reduced the influence of taking action to the patient. The cavity hole of false body lower part communicates with each other with the pulp cavity, on the wall of false body lower part in addition elongated slot or through -hole be linked together with the cavity hole, the permissible bone trabecula of this kind of structure is grown into with the through -hole along cavity hole and elongated slot, reduces stress shielding, restraines the bone and dissolves, makes artifical false body inseparabler with the long bone combination, reduces artifical false body and becomes flexible, avoids the various complication of postoperative, utilizes the cavity hole to follow when rebuilding and catches artifical false body in the backbone more conveniently.
Description
Technical field
This utility model relates to a kind of joint replacement prostheses carrying out joint replacement surgery use, belongs to orthopedic medical device technical field.
Background technology
Various articular degeneration and fracture of the surgical neek of the humerus, After femoral neck fracture femur head necrosis, aged patients with femoral neck fracture are commonly encountered diseases and the frequently-occurring disease of orthopaedics, and prosthetic replacement is the effective means for the treatment of above-mentioned disease.Wherein human synovial replacement is adapted to following situation: 1, the joint deformity that causes of osteoarthritis or destruction of joint; 2, the function of joint that ankylosing spondylitis, rheumatoid arthritis cause is lost; 3, the serious splintered fracture of local joint or osteoarthritis after traumatic; 4, afunction is caused because infection comprises special infection in joint; 5, femoral head, aseptic necrosis of head of humerus late period; 6, fracture of femoral neck disunion or femoral neck fracture in elders delayed union; 7, the joint caused pain of congenital dislocation of hip joint; 8, bone chondronecrosis sexually transmitted disease (STD) becomes; 9, joint part and bone tumor around; But 10, the intact person of metapedes deformation patients ankle joint surrounding ligaments stability.
Joint replacement kind: hip replacement comprises hemiarthroplasty, total hip replacement; Infective arthritis, knee prosthesis divide according to displacement position the displacement of single condyle, total knee replacement, motion rotary-type hinge formula prosthetic replacement etc.; The full ankle joint displacement of ankle joint pathological changes; Shoulder joint displacement comprises full shoulder joint displacement, half shoulder joint displacement; Elbow replacement, simple head of radius replacement and carpal joint displacement.
Mostly artificial joint after displacement is the weight-bearing joints of stressed complexity, bear the comprehensive function of pulling force, pressure, torsion and interfacial shear force and fatigue, wearing and tearing repeatedly simultaneously, the weight load of 1,000,000 ~ 3,000,000 circulations to be born every year and implant for a long time due to it, the corrosiveness of body fluid be stood.In view of special environment for use, prosthetic material will meet following basic demand: 1, good biocompatibility, namely biomaterial can to accept by tissue and to human non-toxic, without rejection etc.; 2, biomechanical compatibility is good, and the elastic modelling quantity of artificial joint material and skeleton, hot expansibility and intensity thereof should be tried one's best consistent, stress effectively could be transmitted by artificial joint material-organizational interface; 3, bioconjugation performance good, fix, namely require that artificial joint is combined with the osseous tissue of surrounding and well, not relative movement and sinking etc. occur; 4, the life-span is long, and artificial joint general projected life is 20 ~ 50 years.How to make articular prosthesis more adapt to skeletal structure and biomechanics characteristic, this will directly have influence on the recovery degree in joint and better histocompatibility, becomes the key of operation success or failure.And joint replacement treat certain time limit after (according to labor intensity, joint wear situation and complication situation), about 15-20 just needs to overhaul, and the prosthese of traditional type is inconvenient to overhaul, and usually needs osteotomy to get, corresponding complication can be caused, affect function of joint.
Along with the development of orthopaedics arthroscopic technique, remove sclerotin weight generally at 100 to 300g, and the prosthese volume of inserting is consistent with removal sclerotin, agrees with mutually.Current Problems existing is: insert prosthese and only take into account isometric(al) displacement, and the weight displacement such as not consider, the weight inserting prosthese is usually 2-3 times that removes sclerotin weight, and overweight prosthese adds the load of suffering limb muscle strength, brings long-term harmful effect to patient's suffering limb functional rehabilitation.Therefore be necessary very much to redesign existing replacement prosthesis, make replacement therapy under the guidance of biology and biomechanical principle, satisfied therapeutic effect can be reached, and be conducive to follow-up rehabilitation.
Utility model content
Technical problem to be solved in the utility model is to provide a kind of bionic joint replacement prosthesis suitable with replacement joint, this replacement prosthesis with remove sclerotin isometric(al), etc. weight, follow the structure of long bone self, conduction and load character, make Bone Ingrowth amount many as far as possible, large as far as possible with prosthese bone contact area, reduce the incidence rate of the complication such as prosthetic loosening, fracture, Periprosthetic fracture, and take out when conveniently overhauling.
The technical scheme solved the problems of the technologies described above is:
A kind of bionic joint replacement prosthesis suitable with replacement joint, its joint replacement prostheses is made up of prosthese head and prosthese bottom, prosthese head behaviour work femoral head or artificial humeral head, knee joint femoral end and ligament tibia end, ankle prosthesis, distal humeral prosthesis, proximal ulna, head of radius prosthese, distal radius prosthese, prosthese bottom is shaft-like, prosthese bottom is connected to the lower end of prosthese head, prosthese head is hollow structure, hollow endoporus is arranged at prosthese bottom, the axis of hollow endoporus is consistent with pulp cavity direction, the volume of the sclerotin that the overall volume of prosthese head and prosthese bottom and weight and displacement are removed and being equal in weight.
The above-mentioned bionic joint replacement prosthesis suitable with replacement joint, described prosthese head and prosthese bottom are two body structures, the hollow endoporus of prosthese bottom and the closure of prosthese head are cecum, prosthesis head subordinate end and prosthese bottom opposing connecting surface there is shrinkage pool, there is connecting rod upper end, prosthese bottom, connecting rod inserts in shrinkage pool, connecting rod and shrinkage pool are for closely cooperating, the cross section of shrinkage pool is regular polygon, and the cross section of the shrinkage pool that the cross section of the connecting rod of upper end, prosthese bottom and prosthesis head subordinate hold matches.
The above-mentioned bionic joint replacement prosthesis suitable with replacement joint, described prosthese head and prosthese bottom are structure as a whole, and the hollow structure of prosthese head is connected with the hollow endoporus of prosthese bottom.
The above-mentioned bionic joint replacement prosthesis suitable with replacement joint, the lower ending opening of hollow endoporus in prosthese bottom of described prosthese bottom, opening communicates with the pulp cavity of inserting long bone, or hollow endoporus is cecum in the lower end of prosthese bottom, does not communicate with the pulp cavity of inserting long bone.
The above-mentioned bionic joint replacement prosthesis suitable with replacement joint, the body wall of described prosthese bottom has 3-4 elongated slot, and hollow endoporus is connected with elongated slot or is not connected, and elongated slot is along the length direction of prosthese bottom, and elongated slot is parallel to each other and is equally spaced.
The above-mentioned bionic joint replacement prosthesis suitable with replacement joint, the body wall of described prosthese bottom is evenly equipped with multiple through hole, and through hole is vertical with the length direction of prosthese bottom, and through hole is connected with hollow endoporus.
The beneficial effects of the utility model are:
Prosthese head, the prosthese bottom of joint replacement prostheses of the present utility model are hollow structure, and the volume of the sclerotin overall volume of joint replacement prostheses and weight and displacement being removed by three dimensional design and being equal in weight, replacement joint prosthese is made to have better human body suitability, avoid the load increasing suffering limb muscle, decrease the impact on patient's action.This utility model devises hollow endoporus on prosthese bottom, hollow endoporus communicates with pulp cavity or is not connected, the axis of hollow endoporus is consistent with pulp cavity direction, and prosthese bottom body wall also has elongated slot or through hole are connected with hollow endoporus, there is bionic coating on artificial prosthesis surface.This structure can allow bone trabecula to grow into along hollow endoporus and elongated slot and through hole, reduces stress shielding, suppresses bone to dissolve, and make artificial prosthesis be combined more closely with long bone, minimizing artificial prosthesis loosens, and avoids artificial prosthesis surrounding fracture and postoperative various complication; Meanwhile, make the elastic modelling quantity of artificial prosthesis better in conjunction with hollow endoporus, internal fixtion intensity is not weakened, and prevents broken nail, situation that stress fractures; In addition, utilize hollow endoporus in backbone, artificial prosthesis can be got more easily when overhauling.
Isometric(al)s of the present utility model etc., weight prosthese make use of bionic theory, adopt the bionical prosthese more meeting instrument of skeleton anatomical structure especially biomethanics structure characteristic, make prosthese more adapt to conduction and the load character of backbone self, joint replacement can be made to treat and reach satisfied effect.
This utility model is the innovation of prosthetic replacement technology, especially solve the orthopaedics commonly encountered diseases such as senile osteoporosis fracture, fracture of the surgical neek of the humerus, fracture of femoral neck, femur head necrosis, articular degeneration and need joint replacement and postoperative hard nut to crack of overhauling, be applicable to general joint replacement therapy, there is good expection, significant economic and social benefit can be obtained.
Accompanying drawing explanation
Fig. 1 is structural representation of the present utility model;
Fig. 2 is another kind of structural representation of the present utility model;
Fig. 3 is the A-A sectional view of Fig. 1;
The through hole schematic diagram of Fig. 4 this utility model prosthese bottom;
Fig. 5 is using state schematic diagram of the present utility model.
In figure, labelling is as follows: prosthese head 1, prosthese bottom 2, shrinkage pool 3, connecting rod 4, hollow endoporus 5, elongated slot 6, through hole 7, long bone 8.
Detailed description of the invention
Joint replacement prostheses of the present utility model is made up of prosthese head 1 and prosthese bottom 2.
Show in figure, prosthese head 1 is artificial thigh bone or artificial humeral head, knee joint femoral end and ligament tibia end, ankle prosthesis, distal humeral prosthesis, proximal ulna, head of radius prosthese, distal radius prosthese.Prosthese bottom 2 is shaft-like, and for being inserted in the pulp cavity of long bone, prosthese bottom 2 is connected to the lower end of prosthese head 1, and prosthesis head 1 is hollow structure, and hollow endoporus 5 is arranged at prosthese bottom 2, and the axis of hollow endoporus 5 is consistent with pulp cavity direction.
The volume of the sclerotin that the overall volume of prosthese head 1 of the present utility model and prosthese bottom 2 and weight and displacement are removed and being equal in weight.Preoperative by CT three-dimensional reconstruction and three D printing techniques, design with remove sclerotin isometric(al), etc. the replacement joint prosthese of weight, make replacement joint prosthese have better human body suitability, avoid the load increasing suffering limb muscle, decrease the impact on patient's action.
Fig. 1,2 displays, prosthese head 1 of the present utility model and prosthese bottom 2 be connected with two kinds of structures, a kind of structure is prosthese head 1 and prosthese bottom 2 is two body structures, two body structures carry out connecting rear one-tenth and are integrated, another kind of structure is that prosthese head 1 and prosthese bottom 2 are structure as a whole, and the hollow structure of prosthese head 1 is connected with the hollow endoporus 5 of prosthese bottom 2.
Fig. 1 shows, and prosthese head 1 and prosthese bottom 2 are two body structures, and prosthese head 1 is hollow structure, prosthese head 1 lower end and prosthese bottom opposing connecting surface there is shrinkage pool 3, there is connecting rod 4 upper end, prosthese bottom 2, and connecting rod 4 inserts in shrinkage pool 3, and connecting rod 4 and shrinkage pool 3 are for closely cooperating.
Fig. 1 shows, and the cross section of the shrinkage pool 3 of prosthese head 1 lower end is regular polygon, can adopt tetragon, pentagon or hexagon, and the cross section of the cross section of the connecting rod 4 of upper end, prosthese bottom 2 and the shrinkage pool 3 of prosthese head 1 lower end matches.Adopt this structure can after connecting rod 4 inserts shrinkage pool 3, prosthese head 1 and prosthese bottom 2 can not relatively rotate.
The shrinkage pool 3 of above-mentioned prosthese head 1 and the connecting rod 4 of prosthese bottom 2 also can adopt the syndeton of screw and screw rod.
Fig. 2 shows, and another kind of structure of the present utility model is that prosthese head 1 and prosthese bottom 2 are structure as a whole, and the hollow structure of prosthese head 1 is connected with the hollow endoporus 5 of prosthese bottom 2.
Fig. 1,2,3,5 shows, hollow endoporus 5 is arranged at prosthese bottom 2, and the axis of hollow endoporus 5 is consistent with pulp cavity direction, and hollow endoporus 5 is cecum with the closure of prosthese head 1, the lower ending opening of the other end in prosthese bottom 2 of hollow endoporus 5, opening with insert long bone 8 pulp cavity and communicate.Or the other end of hollow endoporus 5 is cecum in the lower end of prosthese bottom 2, hollow endoporus 5 with insert long bone 8 pulp cavity and do not communicate.
Hollow endoporus 5 is connected with long bone 8 pulp cavity and decreases the occupy-place of joint replacement prostheses in long bone 8 pulp cavity, bone trabecula can be allowed to grow into along hollow endoporus 5, reduce stress shielding, bone is suppressed to dissolve, artificial prosthesis is made to be combined tightr with long bone 8, reduce artificial prosthesis to loosen, avoid artificial prosthesis surrounding fracture and postoperative various complication; Meanwhile, make the elastic modelling quantity of artificial prosthesis better in conjunction with hollow endoporus 5, internal fixtion intensity is not weakened, and prevents broken nail, situation that stress fractures; In addition, utilize hollow endoporus 5 in backbone, artificial prosthesis can be got more easily when overhauling.
Fig. 1,2,3,5 shows, the body wall of the prosthese bottom 2 of joint replacement prostheses of the present utility model has 3-4 elongated slot 6, hollow endoporus 5 is connected with elongated slot 6, or hollow endoporus 5 is not connected with elongated slot 6, elongated slot 6 is along the length direction of prosthese bottom 2, and elongated slot 6 is parallel to each other and is equally spaced.
Fig. 4 shows, and the body wall of the prosthese bottom 2 of joint replacement prostheses of the present utility model is evenly equipped with multiple through hole 7, and through hole 7 is vertical with the length direction of prosthese bottom 2, and through hole 7 is connected with hollow endoporus 5.
The effect of above-mentioned elongated slot 6 and through hole 7 is all the elastic modelling quantity more adapting to sclerotin, reduces the occupation time process to pulp cavity, the pressure in buffering pulp cavity, bone trabecula is allowed to grow into along elongated slot 6 and through hole 7, artificial prosthesis is combined with long bone 8 more tight, reduces artificial prosthesis and loosen, restore funcitons better.
Joint replacement prostheses of the present utility model adopts metal material (titanium alloy, cobalt alloy, rustless steel etc.) or the multiple material such as pottery and carbon element.
Claims (6)
1. a bionic joint replacement prosthesis suitable with replacement joint, its joint replacement prostheses is made up of prosthese head (1) and prosthese bottom (2), prosthese head (1) is artificial thigh bone or artificial humeral head, knee joint femoral end and ligament tibia end, ankle prosthesis, distal humeral prosthesis, proximal ulna, head of radius prosthese, distal radius prosthese, prosthese bottom (2) is for shaft-like, prosthese bottom (2) is connected to the lower end of prosthese head (1), it is characterized in that: prosthese head (1) is hollow structure, hollow endoporus (5) is arranged at prosthese bottom (2), the axis of hollow endoporus (5) is consistent with pulp cavity direction, the volume of the sclerotin that the overall volume of prosthese head (1) and prosthese bottom (2) and weight and displacement are removed and being equal in weight.
2. the bionic joint replacement prosthesis suitable with replacement joint according to claim 1, it is characterized in that: described prosthese head (1) and prosthese bottom (2) are two body structures, the hollow endoporus (5) of prosthese bottom (2) and the closure of prosthese head (1) are cecum, prosthese head (1) lower end and prosthese bottom (2) opposing connecting surface there is shrinkage pool (3), there is connecting rod (4) prosthese bottom (2) upper end, connecting rod (4) inserts in shrinkage pool (3), connecting rod (4) and shrinkage pool (3) are for closely cooperating, the cross section of shrinkage pool (3) is regular polygon, the cross section of the cross section of the connecting rod (4) of prosthese bottom (2) upper end and the shrinkage pool (3) of prosthese head (1) lower end matches.
3. the bionic joint replacement prosthesis suitable with replacement joint according to claim 1, it is characterized in that: described prosthese head (1) and prosthese bottom (2) are structure as a whole, the hollow structure of prosthese head (1) is connected with the hollow endoporus (5) of prosthese bottom (2).
4. the bionic joint replacement prosthesis suitable with replacement joint according to claim 1,2 or 3, it is characterized in that: the lower ending opening of the other end in prosthese bottom (2) of the hollow endoporus (5) of described prosthese bottom (2), opening communicates with the pulp cavity of inserting long bone (8), or the other end of hollow endoporus (5) is cecum in the lower end of prosthese bottom (2), hollow endoporus (5) does not communicate with the pulp cavity of inserting long bone (8).
5. the bionic joint replacement prosthesis suitable with replacement joint according to claim 4, it is characterized in that: the body wall of described prosthese bottom (2) has 3-4 elongated slot (6), hollow endoporus (5) is connected with elongated slot (6) or is not connected, elongated slot (6) is along the length direction of prosthese bottom (2), and elongated slot (6) is parallel to each other and is equally spaced.
6. the bionic joint replacement prosthesis suitable with replacement joint according to claim 5, it is characterized in that: the body wall of described prosthese bottom (2) is evenly equipped with multiple through hole (7), through hole (7) is vertical with the length direction of prosthese bottom (2), and through hole (7) is connected with hollow endoporus (5).
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520853434.6U CN205107980U (en) | 2015-10-30 | 2015-10-30 | With bionical joint replacement false body of displacing joint looks adaptation |
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| CN201520853434.6U CN205107980U (en) | 2015-10-30 | 2015-10-30 | With bionical joint replacement false body of displacing joint looks adaptation |
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| CN205107980U true CN205107980U (en) | 2016-03-30 |
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108309513A (en) * | 2018-02-05 | 2018-07-24 | 刘洋 | Joint replacement prostheses |
| CN110882092A (en) * | 2019-12-20 | 2020-03-17 | 天衍医疗器材有限公司 | Half hip and manufacturing process thereof |
| CN113749825A (en) * | 2020-07-14 | 2021-12-07 | 浙江大学 | Frame type bone joint prosthesis and preparation method and application thereof |
-
2015
- 2015-10-30 CN CN201520853434.6U patent/CN205107980U/en active Active
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108309513A (en) * | 2018-02-05 | 2018-07-24 | 刘洋 | Joint replacement prostheses |
| CN110882092A (en) * | 2019-12-20 | 2020-03-17 | 天衍医疗器材有限公司 | Half hip and manufacturing process thereof |
| CN113749825A (en) * | 2020-07-14 | 2021-12-07 | 浙江大学 | Frame type bone joint prosthesis and preparation method and application thereof |
| CN113749825B (en) * | 2020-07-14 | 2022-08-05 | 浙江大学 | Frame type bone joint prosthesis and preparation method and application thereof |
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