CN103598934A - Knee joint prosthesis filling pad - Google Patents
Knee joint prosthesis filling pad Download PDFInfo
- Publication number
- CN103598934A CN103598934A CN201310530732.7A CN201310530732A CN103598934A CN 103598934 A CN103598934 A CN 103598934A CN 201310530732 A CN201310530732 A CN 201310530732A CN 103598934 A CN103598934 A CN 103598934A
- Authority
- CN
- China
- Prior art keywords
- thread
- joint prosthesis
- pad
- fill
- knee
- 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.)
- Granted
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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
Abstract
The invention provides a knee joint prosthesis filling pad which solves the problem that the maximum bone mass of a patient cannot be reserved by the aid of a knee joint prosthesis filling pad in knee joint prosthesis replacement in the prior art. The knee joint prosthesis filling pad comprises a movable block, a fixed block, an adjusting component and an anti-rotation component, wherein the bottom end of the adjusting component and the bottom end of the anti-rotation component are respectively fixed onto the movable block through a retainer ring, and both the adjusting component and the anti-rotation component are connected with the fixed block. By the aid of the technical scheme, the knee joint prosthesis filling pad does not have strict requirements for the size and the angle of a bone cutting surface through height adjustability and angular adaptivity of the knee joint prosthesis filling pad, and a knee joint prosthesis can be mounted under the condition of reserving the maximum bone mass.
Description
Technical field
The present invention relates to technical field of medical instruments, refer to that especially a kind of thickness is adjustable, the adaptive knee-joint prosthesis fill-in pad of angle.
Background technology
In knee replacements, often run into such as: the bone that the many reasons such as arthritis angulation deformity, condylar agenesis, ischemic osteonecrosis, wound and condyle osteotomy history cause is damaged.Process the size that the damaged method of bone depends on defect, be less than the damaged of 5mm and conventionally with bone cement, clog; Larger damaged can the treatment by several different methods of non-inclusive property, comprises the bone cement filling of structural bone grafting, metallic gasket or screw reinforcement etc.According to investigations, exist the example of 125 in 145 damaged routine replacements of medial tibial to adopt metal support need to overhaul through none example of thigh prosthesis patients.
In knee-joint prosthesis conversion art, doctor can be as much as possible for patient retains DAGU amount, lack osteotomy, existing knee-joint prosthesis fill-in pad in order to adapt to the damaged needs of different bones, also have a fill-in pad of many specifications, this specification is comprised of three parts, one is size dimension, the size namely matching with prosthese specification; The 2nd, gauge; The 3rd, angle, the fixed angle fill-in pad ，Hai Huiyou producer wherein being provided by producer provides the special-purpose osteotomy apparatus osteotomy matching with fill-in pad specification, so that the use of fixed angle fill-in pad.General prosthese has 8 specifications, 4 specifications of thickness, 3 specifications of angle, and counting like this specification that fixes fill-in pad just has 96 specifications.If reduce a specification gradient, will increase by 32 specifications, so many specifications are difficults for producing, and therefore fixedly the specification of fill-in pad often can not provide a lot.Yet, for the success of performing the operation, can only carry out adaptability osteotomy in actual applications, the osteotomy of take is reached the coupling of fill-in pad size as cost, therefore can not meet the maximum operative Principle that retains bone amount completely, and causes operation process complexity.
The present invention proposes the adjustable and adaptive knee-joint prosthesis fill-in pad of angle of a kind of thickness, only with corresponding knee-joint prosthesis, design 8 kinds of specifications, in use, only needed two special spanner kits, just can adjust fill-in pad, and then reach the requirement that knee-joint prosthesis is installed.Come from above-mentioned some, the knee-joint prosthesis fill-in pad that the present invention proposes is not strict with and is used simply, adjusts fast the size of osteotomy surface and angle, and then can retain DAGU amount and reduce the workload of operative doctor, and then reduce operating time, reduction amount of bleeding, and then reduce patient suffering.
Summary of the invention
The present invention proposes a kind of knee-joint prosthesis fill-in pad, has solved in present technology in knee prosthesis replacement art the use of knee-joint prosthesis fill-in pad and can not complete and meet the problem that retains DAGU amount for patient.
Technical scheme of the present invention is achieved in that
A knee-joint prosthesis fill-in pad, comprising:
Movable block, fixed block, adjustment component and anti-ly revolve parts, wherein, the bottom of adjustment component and anti-bottom of revolving parts are fixed on movable block by a back-up ring, and adjustment component and prevent that revolving parts is also all connected with fixed block.
As further technical scheme, adjustment component comprises:
Adjust support column, by back-up ring, be arranged on movable block;
Screw shell, is connected with regulating support column;
Thread hollow staple, is connected with fixed block by its external screw thread, and by female thread, is connected with screw shell again.
As further technical scheme, prevent that revolving parts comprises:
Anti-circumflex branch dagger, is arranged on movable block by back-up ring;
Thread hollow is anti-revolves staple, by its external screw thread, is connected with fixed block;
The anti-rotary sleeve of screw thread, prevents that through thread hollow revolving staple is connected with anti-circumflex branch dagger.
As further technical scheme, on movable block, be provided with two screwed recesses.
As further technical scheme, on fixed block, be provided with two screwed holes.
As further technical scheme, the screwed hole on fixed block is right-handed thread hole; The external screw thread of thread hollow staple is that right-handed thread, female thread are right-handed thread; Screw shell external screw thread is that right-handed thread, female thread are left hand thread; The screw thread of adjusting support column is left hand thread.
As further technical scheme, the screwed hole on fixed block is left handed threaded hole; The external screw thread of thread hollow staple is that left hand thread, female thread are left hand thread; The external screw thread of screw shell is that left hand thread, female thread are right-handed thread; The screw thread of adjusting support column is right-handed thread.
The present invention uses design principle:
Doctor is in knee joint conversion art, the present invention is fixed on adaptive platform holder prosthese, the special spanner of adjusting height with the present invention turns thread hollow staple, thereby moving screw shell rotation, and then increase or reduce the distance between fixed block and movable block, and then reach the height of adjusting whole knee joint fill-in pad, in addition, the anti-rotary sleeve of screw thread is sleeved connection with anti-the revolving between staple of thread hollow, in height adjustment process, the anti-rotary sleeve of screw thread can be adjusted voluntarily height and prevent the skew of fixed block left and right at the anti-staple that revolves of thread hollow.
Beneficial effect of the present invention is:
The height-adjustable of knee joint fill-in pad proposing by the present invention and the adaptivity of angle, can make knee-joint prosthesis fill-in pad not be strict with the size of osteotomy surface and angle, and then can in DAGU amount situation, just can reach the requirement that knee-joint prosthesis is installed retaining, with entering because knee-joint prosthesis fill-in pad installation requirement is little, and installation is simple, adjustment is quick, thereby reduced the workload of operative doctor, and then reduced operating time, reduction amount of bleeding, and then reduced patient suffering.
Accompanying drawing explanation
Below in conjunction with the drawings and specific embodiments, the present invention is further detailed explanation.
Fig. 1 is cross-sectional view of the present invention.
In figure: 1, movable block; 2, fixed block; 3, adjust support column; 4, anti-circumflex branch dagger; 5, thread hollow staple; 6, the anti-staple that revolves of thread hollow; 7, screw shell; 8, the anti-rotary sleeve of screw thread; 9, back-up ring.
The specific embodiment
Below in conjunction with the accompanying drawing in the embodiment of the present invention, the technical scheme in the embodiment of the present invention is clearly and completely described, obviously, described embodiment is only the present invention's part embodiment, rather than whole embodiment.Embodiment based in the present invention, those of ordinary skills, not making the every other embodiment obtaining under creative work prerequisite, belong to the scope of protection of the invention.
As shown in Figure 1, a kind of knee-joint prosthesis fill-in pad that the present invention proposes, comprising:
Movable block 1, fixed block 2, adjustment component and anti-ly revolve parts, wherein, the bottom of adjustment component and anti-bottom of revolving parts are fixed on movable block 1 by a back-up ring 9, and adjustment component and prevent that revolving parts is also all connected with fixed block 2.
Two screwed recesses on movable block 1 respectively by back-up ring 9 by adjustment component with anti-revolve parts and fix; Fixed block 2 is revolved parts and is connected with anti-with adjustment component respectively by two screwed holes, and by the distance between adjustment component adjustment and movable block 1, and then reaches the Height Adjustable effect of the present invention's proposition; The anti-parts that revolve not only can reach the object that prevents fixed block 2 left rotation and right rotation when adjusting height, also can complete the effect that angle regulates automatically, due between the anti-rotary sleeve 8 of anti-circumflex branch dagger 4 and screw thread and be to be all connected by sleeved connected mode between the anti-rotary sleeve 8 of screw thread and the anti-rotary sleeve of thread hollow, when the adjusted rising of fill-in pad height or reduction, the anti-height that revolves parts also can increase or reduce, thereby reaches the adaptive effect of angle.
As further technical scheme, adjustment component comprises:
Adjust support column 3, by back-up ring 9, be arranged on movable block 1;
Screw shell 7, is connected with regulating support column;
Thread hollow staple 5, is connected with fixed block 2 by its external screw thread, and by female thread, is connected with screw shell 7 again.
As further technical scheme, prevent that revolving parts comprises:
Anti-circumflex branch dagger 4, is arranged on movable block 1 by back-up ring 9;
Thread hollow is anti-revolves staple 6, by its external screw thread, is connected with fixed block 2;
The anti-rotary sleeve 8 of screw thread, prevents that through thread hollow revolving staple 6 is connected with anti-circumflex branch dagger 4.
As further technical scheme, on movable block 1, be provided with two screwed recesses.
As further technical scheme, on fixed block 2, be provided with two screwed holes.
One embodiment of the invention, as shown in Figure 1:
As further technical scheme, the screwed hole on fixed block 2 is right-handed thread hole; The external screw thread of thread hollow staple 5 is that right-handed thread, female thread are right-handed thread; The external screw thread of screw shell 7 is that right-handed thread, female thread are left hand thread; The screw thread of adjusting support column 3 is left hand thread.
In the present invention, when adjusting fill-in pad height, according to the realization that matches between screw thread, when as above the screwed hole on fixed block 2 is right-handed thread hole, the external screw thread of thread hollow staple 5 is that right-handed thread, female thread are right-handed thread; Screw shell 7 external screw threads are that right-handed thread, female thread are left hand thread; The screw thread of adjusting support column 3 is left hand thread, this wherein, the external screw thread of thread hollow staple 5 and fixed block 2 threaded engagement; The external screw thread matching thread sleeve 7 of the female thread of thread hollow staple 5 and screw shell 7; The female thread of screw shell 7 and the threaded engagement of adjusting support column 3, when turning clockwise thread hollow staple 5, drive screw shell 7 also to turn clockwise, thereby reduce the height of fill-in pad, on the contrary the height of the fill-in pad that raises.
Another embodiment of the present invention (not shown):
As further technical scheme, the screwed hole on fixed block 2 is left handed threaded hole; The external screw thread of thread hollow staple 5 is that left hand thread, female thread are left hand thread; Screw shell 7 external screw threads are that left hand thread, female thread are right-handed thread; The screw thread of adjusting support column 3 is right-handed thread.
The present embodiment is identical with a upper embodiment principle, only all contrary with the hand of spiral of adjustment component, also can reach the effect of same adjustment fill-in pad height, and the direction of just adjusting height is contrary with a upper embodiment.
The present invention uses design principle:
Doctor is in knee joint conversion art, the present invention is fixed on adaptive platform holder prosthese, the special spanner of adjusting height with the present invention turns thread hollow staple 5, thereby moving screw shell 7 rotations, and then increase or reduce the distance between fixed block 2 and movable block 1, and then reach the height of adjusting whole knee joint fill-in pad, in addition, the anti-rotary sleeve 8 of screw thread is sleeved connection with anti-the revolving between staple 6 of thread hollow, in height adjustment process, the anti-rotary sleeve 8 of screw thread can be adjusted voluntarily height and prevent fixed block 2 left and right skews at the anti-staple 6 that revolves of thread hollow.
Beneficial effect of the present invention is:
The height-adjustable of knee joint fill-in pad proposing by the present invention and the adaptivity of angle, can make knee-joint prosthesis fill-in pad not be strict with the size of osteotomy surface and angle, and then can in DAGU amount situation, just can reach the requirement that knee-joint prosthesis is installed retaining, with entering because knee-joint prosthesis fill-in pad installation requirement is little, and installation is simple, adjustment is quick, thereby reduced the workload of operative doctor, and then reduced operating time, reduction amount of bleeding, and then reduced patient suffering.
The foregoing is only preferred embodiment of the present invention, in order to limit the present invention, within the spirit and principles in the present invention not all, any modification of doing, be equal to replacement, improvement etc., within all should being included in protection scope of the present invention.
Claims (7)
1. a knee-joint prosthesis fill-in pad, is characterized in that, comprising:
Movable block (1), fixed block (2), adjustment component and the anti-parts that revolve, wherein, it is upper that the bottom of described adjustment component and described anti-bottom of revolving parts are fixed on described movable block (1) by a back-up ring (9), and described adjustment component prevents that with described revolving parts is also all connected with described fixed block (2).
2. a kind of knee-joint prosthesis fill-in pad as claimed in claim 1, is characterized in that, described adjustment component comprises:
Adjust support column (3), by described back-up ring (9), be arranged on described movable block (1);
Screw shell (7), is connected with described adjusting support column;
Thread hollow staple (5), is connected with described fixed block (2) by its external screw thread, and by female thread, is connected with described screw shell (7) again.
3. a kind of knee-joint prosthesis fill-in pad as claimed in claim 1, is characterized in that, describedly anti-revolve parts and comprises:
Anti-circumflex branch dagger (4), is arranged on described movable block (1) by described back-up ring (9);
Thread hollow is anti-revolves staple (6), by its external screw thread, is connected with described fixed block (2);
The anti-rotary sleeve of screw thread (8) (8), prevents that through described thread hollow revolving staple (6) is connected with described anti-circumflex branch dagger (4).
4. a kind of knee-joint prosthesis fill-in pad as claimed in claim 1, is characterized in that, is provided with two screwed recesses on described movable block (1).
5. a kind of knee-joint prosthesis fill-in pad as claimed in claim 1, is characterized in that, is provided with two screwed holes on described fixed block (2).
6. a kind of knee-joint prosthesis fill-in pad as claimed in claim 2, is characterized in that, the screwed hole on described fixed block (2) is right-handed thread hole; The external screw thread of described thread hollow staple (5) is that right-handed thread, female thread are right-handed thread; Described screw shell (7) external screw thread is that right-handed thread, female thread are left hand thread; The screw thread of described adjustment support column (3) is left hand thread.
7. a kind of knee-joint prosthesis fill-in pad as claimed in claim 2, is characterized in that, the screwed hole on described fixed block (2) is left handed threaded hole; The external screw thread of described thread hollow staple (5) is that left hand thread, female thread are left hand thread; The external screw thread of described screw shell (7) is that left hand thread, female thread are right-handed thread; The screw thread of described adjustment support column (3) is right-handed thread.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201310530732.7A CN103598934B (en) | 2013-10-30 | 2013-10-30 | A kind of knee-joint prosthesis fill-in pad |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201310530732.7A CN103598934B (en) | 2013-10-30 | 2013-10-30 | A kind of knee-joint prosthesis fill-in pad |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN103598934A true CN103598934A (en) | 2014-02-26 |
| CN103598934B CN103598934B (en) | 2015-12-30 |
Family
ID=50117245
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201310530732.7A Active CN103598934B (en) | 2013-10-30 | 2013-10-30 | A kind of knee-joint prosthesis fill-in pad |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN103598934B (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104783934A (en) * | 2015-05-08 | 2015-07-22 | 北京爱康宜诚医疗器材股份有限公司 | Tibial plateau assembly |
| CN104799981A (en) * | 2015-05-22 | 2015-07-29 | 北京爱康宜诚医疗器材股份有限公司 | Bone and joint prosthesis platform gasket assembly |
| CN111588520A (en) * | 2020-05-08 | 2020-08-28 | 天衍医疗器材有限公司 | Knee joint prosthesis |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE20118926U1 (en) * | 2001-11-20 | 2002-05-02 | Sanitaetshaus Carstens Im Mari | prosthesis |
| CN101522136A (en) * | 2006-08-22 | 2009-09-02 | 精密技术公司 | System and method for adjusting the thickness of a prosthesis |
| CN203001180U (en) * | 2012-11-02 | 2013-06-19 | 北京爱康宜诚医疗器材股份有限公司 | Rotating hinged artificial knee joint tibial spacer |
| US20130204267A1 (en) * | 2004-11-24 | 2013-08-08 | Terry L. Dietz | Adjustable knee tibial trial insert |
-
2013
- 2013-10-30 CN CN201310530732.7A patent/CN103598934B/en active Active
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE20118926U1 (en) * | 2001-11-20 | 2002-05-02 | Sanitaetshaus Carstens Im Mari | prosthesis |
| US20130204267A1 (en) * | 2004-11-24 | 2013-08-08 | Terry L. Dietz | Adjustable knee tibial trial insert |
| CN101522136A (en) * | 2006-08-22 | 2009-09-02 | 精密技术公司 | System and method for adjusting the thickness of a prosthesis |
| CN203001180U (en) * | 2012-11-02 | 2013-06-19 | 北京爱康宜诚医疗器材股份有限公司 | Rotating hinged artificial knee joint tibial spacer |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104783934A (en) * | 2015-05-08 | 2015-07-22 | 北京爱康宜诚医疗器材股份有限公司 | Tibial plateau assembly |
| CN104799981A (en) * | 2015-05-22 | 2015-07-29 | 北京爱康宜诚医疗器材股份有限公司 | Bone and joint prosthesis platform gasket assembly |
| CN111588520A (en) * | 2020-05-08 | 2020-08-28 | 天衍医疗器材有限公司 | Knee joint prosthesis |
| CN111588520B (en) * | 2020-05-08 | 2021-08-03 | 天衍医疗器材有限公司 | Knee joint prosthesis |
Also Published As
| Publication number | Publication date |
|---|---|
| CN103598934B (en) | 2015-12-30 |
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Address after: 300110 No. 27, Ziyang Road, Nankai District, Tianjin Patentee after: Jiasite medical equipment (Tianjin) Co.,Ltd. Address before: No.27 Ziyang Road Nankai District Tianjin 300190 Patentee before: Jiasite Huajian Medical Equipment(Tianjin)Co.,Ltd. |
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