CN2096975U - Lock loop type series of artificial hip joints - Google Patents
Lock loop type series of artificial hip joints Download PDFInfo
- Publication number
- CN2096975U CN2096975U CN 90225988 CN90225988U CN2096975U CN 2096975 U CN2096975 U CN 2096975U CN 90225988 CN90225988 CN 90225988 CN 90225988 U CN90225988 U CN 90225988U CN 2096975 U CN2096975 U CN 2096975U
- Authority
- CN
- China
- Prior art keywords
- hip
- plastics
- bulb
- lock ring
- center
- 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
- 210000004394 hip joint Anatomy 0.000 title abstract description 7
- 239000004033 plastic Substances 0.000 claims abstract description 40
- 229920003023 plastic Polymers 0.000 claims abstract description 40
- 230000029058 respiratory gaseous exchange Effects 0.000 claims abstract description 16
- 239000004570 mortar (masonry) Substances 0.000 claims description 24
- 210000000988 bone and bone Anatomy 0.000 claims description 6
- 239000002184 metal Substances 0.000 claims description 5
- 239000002131 composite material Substances 0.000 claims description 4
- 238000010276 construction Methods 0.000 claims description 4
- 239000004698 Polyethylene Substances 0.000 claims description 2
- 239000000463 material Substances 0.000 claims description 2
- -1 polyethylene Polymers 0.000 claims description 2
- 229920000573 polyethylene Polymers 0.000 claims description 2
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 claims 1
- 229910052799 carbon Inorganic materials 0.000 claims 1
- 239000000835 fiber Substances 0.000 claims 1
- 210000001624 hip Anatomy 0.000 abstract description 17
- 210000000588 acetabulum Anatomy 0.000 abstract 4
- 210000000689 upper leg Anatomy 0.000 description 7
- 230000000694 effects Effects 0.000 description 3
- 230000009286 beneficial effect Effects 0.000 description 2
- 239000007787 solid Substances 0.000 description 2
- 229920000049 Carbon (fiber) Polymers 0.000 description 1
- 241000628997 Flos Species 0.000 description 1
- 239000011324 bead Substances 0.000 description 1
- 239000004917 carbon fiber Substances 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 239000007943 implant Substances 0.000 description 1
- 210000000629 knee joint Anatomy 0.000 description 1
- 230000007774 longterm Effects 0.000 description 1
- 238000000034 method Methods 0.000 description 1
- 210000000323 shoulder joint Anatomy 0.000 description 1
- 238000004804 winding Methods 0.000 description 1
- 210000000707 wrist Anatomy 0.000 description 1
Images
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
- A61F2/32—Joints for the hip
-
- 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)
- 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
Disclosed is a lock loop type series of artificial hip joints, which comprise a double acting half hip and a full hip, wherein, a ball head of a hip handle is connected with an acetabulum by means of a lock ring. The lock loop type series of artificial hip joints are characterized in that the acetabulum is made into an integral plastic acetabulum whose centre is off-center compared with the centre of the ball head of the hip handle. The plastic acetabulum is provided with a ring-shaped tapered slot which is provided with an adjustable breathing ring made of plastic as a lock loop against the inner side of the opening thereof, the lock loop is provided with an opening which adjusts the breathing quantity thereof, and a special tool for loading and unloading is arranged.
Description
This utility model relates to a kind of lock ring type hip prosthesis series, and exactly this series comprises two moving half hips, and promptly two moving worker's femorals head also comprise full hip, i.e. artificial hip joint or title hip prosthesis.These members are medically using for orthopedist's implant into body.
Disclose a kind of articular prosthesis with lining by american documentation literature us4770658-A, this articular prosthesis is that the lock ring that is equipped with by shell prevents that the hip negative winding stem from deviating from from lining.The lining of this prosthese is in the enclosure fastening and combine pack into the groove of lock ring of the opening that is formed in shell with it.Lock ring comprises the seamless annular element of a unitary solid.Lock ring is contained in and can forms a black box on the shell and be suitable for a bulb is inserted in shell and the lining.Then lock ring can be tightened on lining and the shell, makes lining surround bulb in case it is deviate from from lining and shell.Because lock ring is an overall structure, therefore help eliminating the partial radial dilatation of appearance on the lining.But this articular prosthesis structure is comparatively complicated, for example will make female thread on the shell, and gasket end closing in place is provided with the Flos Mume lobe, difficulty is big on the technology, add that lock ring is whole solid member, weight is big, and reasons such as unloading lock ring inconvenience cause this structure to fail to reach generally and adopted by people.
In addition, from the spherical movable joint of the disclosed a kind of lock ring type of british patent document GB2152385.This movable joint during as hip joint its to be fixed on endopelvic acetabular bone be a metal shell spherical in shape, wherein the endoporus of opening is cylindrical, and is provided with a fixedly groove of lock ring.Disposed a plastic bushing between local bulb that femur one end is provided with and the above-mentioned shell, this plastic bushing can be arranged to multiple version, for example radially or axially be arranged to two halves, wherein the two halves lining can be isolating each other, or at one end connects and do not separate.Its inboard periphery interlocking of the lock ring of rounded or square-section in the respective grooves of lining, its outboard peripheries then by interlocking in the respective grooves of shell, thereby prevented that the femur bulb from deviating from from lining and shell.From a kind of structure shown in the described embodiment of this patent documentation as can be known, a ring-type bead also can be set on the corresponding outer rim of lining makes shell, lining and bulb constitute an integral body as lock ring.But this joint makes its biomechanical property bad because the shell center overlaps with the bulb center, and easily dislocation adds unloading inconvenience, fragile member, and these problem long-term existence fail to obtain thorough solution always.
Task of the present utility model is, on similar lock ring type hip prosthesis basis, propose a kind of simple in structure, be convenient to process, dependable performance and inexpensive durable two moving half hip and full hip series.Because existing product is through using after a while, problems such as existence is loosening, sinking, dislocation, pain, causing has 20% patient will reprocess in 5～10 years approximately, so just presses for borrowed structure is done further to improve.
Have for finishing the technical measures that this utility model task takes: use attrition resistant plastics, for example the ultra high molecular polyethylene plastics are made a plastics mortar and are replaced existing metal shell and plastic bushing to be divided into two composite construction, or replace plastics with materials such as carbon fibers.Make as the center of the plastics mortar of acetabular bone and do not overlap with an end bulb center as femur, the former center is 0～3 millimeter but setover inwards in latter center, so further improved the performance of biomechanics, make whole joint stressed even, durable, outer shroud stood and be difficult for dislocation.Lean on the inboard of its opening that a ringwise skewed slot is set at above-mentioned plastics mortar, be furnished with an adjustable breathing circle made from wear-resistant plastic in the groove, that is to say that lock ring has the opening of its breathing amount of scalable as lock ring.Lock ring plays the effect that bulb can not be deviate from the plastics mortar of pinning in normal operation position, but if lock ring is inwardly passed 3～5 millimeters, then lock ring is opened, thereby the femur bulb is easily taken off from the plastics mortar.For making the lock ring unloading convenient, a kind of specific purpose tool is set, this instrument is an annular thin wall sleeve, and the one end is provided with the flange perpendicular to barrel, and the other end is passed lock ring with its end face, and bulb is deviate from.The barrel external profile diameter of this instrument is equivalent to opening diameter or two moving femoral ball head end diameter of plastics mortar for this reason.In addition, this instrument has one section to be the breach that disconnects along its periphery, and its size is slightly larger than the axle journal diameter of above-mentioned femur bulb, uses thereby be beneficial to insert.
In conjunction with following accompanying drawing an embodiment of the present utility model is further described now.
Wherein:
Fig. 1 represents the cross-sectional schematic of a kind of hip prosthesis of the present utility model,
Fig. 2 represents that adjustable breathing circle conduct is by the signal enlarged drawing of the lock ring in Fig. 1 hip prosthesis on normal operation position.
As shown in Figure 1, according to a kind of hip prosthesis of the present utility model by a plastics mortar 1, a femur bulb 2 and an adjustable breathing circle 3 are formed, wherein the opening diameter of plastics mortar 1 is equivalent to the diameter of femoral head 2, thereby make bulb 2 be easy to enter on its operating position in plastics mortar 1, this moment, bulb 2 was at first pushed adjustable breathing circle 3 to the inside, until shifting extreme position onto, make that above-mentioned breathing circle 3 or title lock ring are opened, so bulb 2 is just taken a leap over, breathing circle 3 then arrives original geometry because of its inherent elastic return, tight near in the outermost stopper slot of plastics mortar 1, thereby pin bulb 2, it can not be deviate from plastics mortar 1.This connected mode has fundamentally solved the problem of bulb 2 dislocations, because bulb 2 more is mobile outward, the pinning effect of breathing circle 3 more effectively that is to say that its superiority is given prominence in practical application.
By structure shown in Figure 1, the shape of plastics mortar is single, simple in structure and be beneficial to processing, adds that with traditional metal shell the composite construction of plastic bushing is compared, and its production cost can significantly reduce, and this is a good news to patient.In addition, simple in structure and reasonable in design, make that product quality is easy to guarantee, thereby further improved the reliability of its performance.
Fig. 2 is clearly shown that, the center O of bulb 2
2It is the center O that departs from plastics mortar 1 inwards
1Be provided with, its deviation value is 1～3 millimeter.Plastics mortar 1 is by an inboard set skewed slot ringwise of opening, and its inclined-plane becomes 20 ° of angles approximately with respect to horizontal axis, and this skewed slot two end faces vertically are parallel to each other with respect to vertical axis, and one of them end face just in time is in and passes through center O
2Vertical line on, the spacing of above-mentioned two end faces is about 7 millimeters.Be arranged on that the adjustable breathing circle 3 between plastics mortar 1 and the bulb 2 in the above-mentioned skewed slot, its cross sectional shape respectively with plastics mortar 1 in the skewed slot and the outer rim of bulb 2 suitable.By shown in Figure 2 also as can be known, the hip prosthesis of this utility model version, it is 50 ° rotational circle cone that the range of activity of its femur bulb 2 in plastics mortar 1 is equivalent to a cone angle, so the needs on being enough to satisfy to use.Obviously, the hip prosthesis of this utility model version can be made the series of products with all size by actual needs.Be divided into two composite construction acetabular bones of forming by metal shell and plastic bushing and also can adopt lock ring structure of the present utility model, that form by skewed slot and adjustable breathing circle 3 for traditional, thus, structure of the present utility model more embodies has outstanding superiority, has also enlarged the scope of application simultaneously.Said structure not only can be used on hip joint, shoulder joint, knee joint,
Also can use on the joint such as toe, wrist.
Claims (7)
1, a kind of lock ring type hip prosthesis series, comprise two moving half hips and full hip, wherein hip handle bulb is connected with acetabular bone by means of lock ring, acetabular bone is then by a metal shell and the composite construction that plastic bushing is formed, it is characterized in that, acetabular bone is a plastics mortar (1) of making an integral body, the center (O of this plastics mortar
1) with respect to hip handle bulb center (O
2) setover, this plastics mortar (1) is provided with a ringwise skewed slot by the inboard of its opening, be furnished with adjustable breathing circle (3) that plastics make in the groove as lock ring, this lock ring then has the opening of its breathing amount of scalable, supportingly is provided with a unloading specific purpose tool.
2, by the hip prosthesis series of claim 1, it is characterized in that described plastics mortar (1) and adjustable breathing circle (3) are all made with wear-resisting ultra high molecular polyethylene plastics or with carbon fibre material.
3, by the hip prosthesis series of claim 1 or 2, it is characterized in that described bulb center (O
2) be to depart from plastics mortar center (O inwards
1) be provided with, its bias is 0～3 millimeter.
4, press the hip prosthesis series of claim 1 or 2, it is characterized in that, the inboard skewed slot that is provided with of described plastics mortar (1), its inclined-plane becomes 20 ° of angles approximately with respect to horizontal axis, this skewed slot two end faces vertically are parallel to each other with respect to vertical axis, and one of them end face just in time is in by center (O
2) vertical line on, its end distance is about 7 millimeters.
5, press the hip prosthesis series of claim 3, it is characterized in that, inboard its inclined-plane of skewed slot that is provided with of described plastics mortar (1) becomes 20 ° of angles approximately with respect to horizontal axis, this skewed slot two end faces vertically are parallel to each other with respect to vertical axis, and one of them end face just in time is in by center (O
2) vertical line on, its end distance is about 7 millimeters.
6, by claim 1 or 2 hip prosthesis series, it is characterized in that, its cross sectional shape of described adjustable breathing circle (3) respectively with plastics mortar (1) in the skewed slot and the outer rim of bulb (2) suitable.
7, press the hip prosthesis series of claim 1, it is characterized in that the described supporting unloading specific purpose tool that is provided with is an annular thin wall sleeve, the one end is provided with the flange perpendicular to barrel, have one section to be the breach that disconnects along its periphery, its size is slightly larger than the diameter of bulb axle journal.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 90225988 CN2096975U (en) | 1990-12-20 | 1990-12-20 | Lock loop type series of artificial hip joints |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 90225988 CN2096975U (en) | 1990-12-20 | 1990-12-20 | Lock loop type series of artificial hip joints |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN2096975U true CN2096975U (en) | 1992-02-26 |
Family
ID=4903328
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 90225988 Expired - Lifetime CN2096975U (en) | 1990-12-20 | 1990-12-20 | Lock loop type series of artificial hip joints |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN2096975U (en) |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN100542504C (en) * | 2003-12-22 | 2009-09-23 | 普鲁斯外科植入物有限公司 | Glenoid fossa for hip replacement |
| CN103211668A (en) * | 2012-01-20 | 2013-07-24 | 北京市春立正达医疗器械股份有限公司 | Bipolar head prosthesis |
| CN107198595A (en) * | 2017-06-01 | 2017-09-26 | 成都贝施美生物科技有限公司 | The hip prosthesis that a kind of anti-acetabular bone comes off |
| WO2024087171A1 (en) * | 2022-10-28 | 2024-05-02 | Smith & Nephew Asia Pacific Pte. Limited | Bipolar prostheses subassembly and bipolar prostheses assembly |
-
1990
- 1990-12-20 CN CN 90225988 patent/CN2096975U/en not_active Expired - Lifetime
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN100542504C (en) * | 2003-12-22 | 2009-09-23 | 普鲁斯外科植入物有限公司 | Glenoid fossa for hip replacement |
| CN103211668A (en) * | 2012-01-20 | 2013-07-24 | 北京市春立正达医疗器械股份有限公司 | Bipolar head prosthesis |
| CN107198595A (en) * | 2017-06-01 | 2017-09-26 | 成都贝施美生物科技有限公司 | The hip prosthesis that a kind of anti-acetabular bone comes off |
| WO2024087171A1 (en) * | 2022-10-28 | 2024-05-02 | Smith & Nephew Asia Pacific Pte. Limited | Bipolar prostheses subassembly and bipolar prostheses assembly |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C15 | Extension of patent right duration from 15 to 20 years for appl. with date before 31.12.1992 and still valid on 11.12.2001 (patent law change 1993) | ||
| RN01 | Renewal of patent term | ||
| C17 | Cessation of patent right | ||
| CX01 | Expiry of patent term |