CN204092147U - A kind of patella fixture - Google Patents
A kind of patella fixture Download PDFInfo
- Publication number
- CN204092147U CN204092147U CN201420516258.2U CN201420516258U CN204092147U CN 204092147 U CN204092147 U CN 204092147U CN 201420516258 U CN201420516258 U CN 201420516258U CN 204092147 U CN204092147 U CN 204092147U
- Authority
- CN
- China
- Prior art keywords
- screw
- patella
- internal fixation
- fixation plate
- head
- 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 - Fee Related
Links
Landscapes
- Surgical Instruments (AREA)
Abstract
This utility model relates to technical field of medical instruments, specifically refer to a kind of patella fixture, comprise internal fixation plate and screw, described internal fixation plate its circumference run through be provided with inside and outside two circle screw fixed holes, described screw fixed hole within it wall is provided with projection; Described internal fixation plate is connected and fixed by screw and patella.The beneficial effects of the utility model are, structure is simply firm, easy to operate, internal fixation plate has good surgical field of view, not only have multi-direction, enter to follow closely angle and connection further can be reinforced flexibly, decrease the irritant reaction that postoperative foreign body causes, accelerate operation progress, improve surgical quality and decrease patient suffering; This utility model is particularly useful for the anatomical structure needing to rebuild patella when being shifted patella fracture operation, and operative indication is extended to comminuted patellar; This utility model cost is low, function strong, and can effectively solve clinical practice requirements of one's work, application prospect is extensive.
Description
Technical field
This utility model relates to technical field of medical instruments, specifically refers to a kind of patella fixture.
Background technology
Common injury clinically during Patella fracture, fracture is more common in the prime of life, often because quadriceps femoris fiercely shrinks or caused by directly clashing into, its happening part is generally positioned at pole or lower 1/3 place under patella, and tear and intraarticular hematoma with quadriceps femoris enlarged portion, easily there is knee joint disorders and traumatic arthritis.
In the process that knee position Patella fracture is treated, when carrying out surgical menopause, usually adopt following three kinds of modes.First kind of way adopts steel wire or tension band to coordinate Kirschner wire to carry out the fixing of skeleton, and its defect is: 1, Kirschner wire easily skids off, fixing unreliable; 2, steel wire tension stress is not enough, easy fracture; 3, can not be effectively fixing to cracked bone block, affect therapeutic effect.The second way be adopt shape-remembering alloy claw fix, its defect is: 1, patella claw and skeleton profile not affixed, reset effect is poor; 2, tension stress is not enough, and fixing reliability is bad, easy slippage; 3, can not be effectively fixing to cracked bone block, affect therapeutic effect.The third mode adopts AO tension band internal fixtion, its defect is: because the desirable bone block of puncture can be supplied limited, execution tension band fixation acquires a certain degree of difficulty, affect constant intensity, some patient is carrying out in functional exercise recovery process, Kirschner wire or steel wire due to act on pulverizing bone block on and cause slippage, make tension band forfeiture effect, postoperative can not row early function exercise, affect surgical effect.
Authorize that publication No. be " CN 202859272 U ", application number is " 201220441371.X ", name is called that the Chinese utility model patent of " patella fixing device " discloses a kind of patella fixing device, this holder comprise fixing head, lock fixing hole, patella under pole grapple, gram formula pin hole and locking nail; Described fixing head is T-type structure, and distributing 3 at its T-shaped horizontal end locks fixing hole, and locking nail makes patella fixing device main body and patella fix through locking fixing hole, and under patella, pole grapple is positioned at the far-end of fixing head, and under each patella, pole grapple can distribute a gram formula pin hole.During use, first pole grapple fixation hook under patella is blocked the lower limb of patella, until resetted and the clamping that pressurizes by the patella of fracture; Locking nail is screwed into by the locking fixing hole on fixing head top, extremely fixing under fixing patella T plate makes patella; Fix by adjustable free lock hook the bone block that pole grapple under patella can not fix, the kirschner pin hole under patella on the grapple of pole can be threaded a needle pole and patella main body under fixing patella.The defect of this utility model is: 1, use Kirschner wire to coordinate effect when carrying out skeletal fixation usually undesirable, Kirschner wire easily skids off, fixing unreliable; 2, the distinctive T-type structure of fixing head and free lock hook structure fixedly require high to patella position, and operating difficulty is large.
Utility model content
The purpose of this utility model is to overcome the deficiencies in the prior art, provides the patella fixture that a kind of structure is simply firm, easy to operate, indication is wide.
In order to achieve the above object, this utility model provides a kind of patella fixture, comprises internal fixation plate and screw, described internal fixation plate its circumference evenly run through be provided with inside and outside two circle screw fixed holes, described screw fixed hole within it wall is provided with projection;
Described internal fixation plate is connected by screw and patella.
Preferably, the aperture of described screw fixed hole is 5mm.
Preferably, described fixing head runs through in its circumference and is provided with at least one circle suture hole.
Preferably, the number in described suture hole is 3 ~ 8.
Preferably, the aperture in described suture hole is 2mm.
Preferably, described screw comprises screw head and shank of screw portion, and wherein the inner side of screw head is provided with blind hole, and the lateral wall of screw head is provided with head external screw thread, and the lateral wall in shank of screw portion is provided with bar portion external screw thread.
Preferably, on the inwall of described screw fixed hole, circumference is parallel is provided with two circles projections, and described projection is triangular structure, and head external screw thread extruding triangular structure forms swelling and fixes.
Preferably, the described protruding number of often enclosing is 3 ~ 8.
Preferably, the height of projection near internal fixation plate convex side in two described circle projections is 1mm, and the height of projection near internal fixation plate concave side is 1.1mm.
Preferably, described internal fixation plate is the petal platy structure with curvature, and the axial cross section of screw fixed hole and screw head is trapezium structure.
Preferably, the described number being positioned at the screw fixed hole of internal fixation plate inner ring is 1 ~ 3; The number being positioned at the screw fixed hole of internal fixation plate outer ring is 5 ~ 8.
Preferably, the termination of described blind hole is hexagonal plum-type structure.
Preferably, the size of the angle α that the lateral wall of described screw head and the axle center of screw are formed is 15 ~ 45 °;
The size of the angle β of the axle center formation of described head external screw thread and screw is 75 ~ 85 °;
The size of the angle γ of the axle center formation of described bar portion external screw thread and screw is 60 ~ 70 °.
Preferably, the curvature of described internal fixation plate is 9 ~ 15 °, and thickness is 3 ~ 5mm, and diameter is 30 ~ 60mm.
Preferably, the material of described internal fixation plate is titanium alloy material, and it has certain changeable type, can facilitate moulding according to the skeleton of patient in art.
Preferably, the length of described screw is 8 ~ 14mm, and wherein the length of screw head is 2.5 ~ 3.5mm, and the length in shank of screw portion is 4.5 ~ 11.5mm.
The beneficial effects of the utility model are, carry out locking by internal fixation plate and screw to patella to fix, structure is simply firm, easy to operate, multiple screw fixed holes on internal fixation plate make it have good surgical field of view, it is multi-direction that cooperation that is protruding and screw head makes internal fixation plate not only have, enter to follow closely angle flexibly and can by patella, connection between screw and internal fixation plate is further reinforced, the low incisura design of screw fixed hole decreases the irritant reaction that postoperative foreign body causes, accelerate operation progress, improve surgical quality and decrease patient suffering, this utility model is particularly useful for the anatomical structure needing to rebuild patella when being shifted patella fracture operation, and operative indication is extended to comminuted patellar by the design in suture hole, this utility model cost is low, function strong, and can effectively solve clinical practice requirements of one's work, application prospect is extensive.
Accompanying drawing explanation
Fig. 1 is the structural representation of internal fixation plate part in this utility model;
Fig. 2 is the structural representation of bolt portion in this utility model;
Fig. 3 is the sectional view of screw fixed hole part in this utility model;
Fig. 4 is the syndeton sectional view of internal fixation plate and screw in this utility model;
Fig. 5 is the another kind of structural representation of internal fixation plate part in this utility model;
Wherein:
1-internal fixation plate 2-screw 3-screw fixed hole
The protruding 5-screw head 6-shank of screw portion of 4-
7-blind hole 8-head external screw thread 9-bar portion external screw thread
10-suture hole
Detailed description of the invention
Below in conjunction with the drawings and specific embodiments, this utility model is described further.
Embodiment 1:
A kind of patella fixture as shown in Figure 1 to 4, comprises internal fixation plate 1 and screw 2.
Described internal fixation plate 1 is for having the petal platy structure of curvature, and its curvature is 15 °, and diameter is 45mm, and thickness is 3mm.The material of internal fixation plate is titanium alloy material, has certain changeable type, can facilitate moulding according to the skeleton of patient in art.
Described screw 2 comprises screw head 5 and shank of screw portion 6, and wherein the length of screw head 5 is 3mm, and the length in shank of screw portion 6 is 8mm, and the axial cross section of screw head 5 is trapezium structure.
Internal fixation plate 1 evenly runs through in its circumference and is provided with inside and outside two circle screw fixed holes 3 and circle suture holes 10, wherein the axial cross section of screw fixed hole 3 is trapezium structure, the number being positioned at the screw fixed hole 3 of internal fixation plate 1 inner ring is 3, and the number being positioned at the screw fixed hole 3 of internal fixation plate 1 outer ring is 5.
The aperture of described screw fixed hole 3 is 5mm, and within it circumference is parallel on wall is provided with two circle projections 4 for screw fixed hole 3, and projection 4 number of often enclosing is 5.Described protruding 4 is triangular structure, and the projection 4 wherein near internal fixation plate 1 convex side is highly 1mm, and the projection 4 near internal fixation plate 1 concave side is highly 1.1mm.
The number in described suture hole 10 is 5, and aperture is 2mm.
Be provided with blind hole 7 inside the screw head 5 of screw 2, the termination of described blind hole 7 is hexagonal plum-type structure.
The size of the angle α that the lateral wall of screw head 5 and the axle center of screw 2 are formed is 30 °; The lateral wall of screw head 5 is provided with head external screw thread 8, and the size of the angle β of the axle center formation of described head external screw thread 8 and screw 2 is 80 °; The lateral wall in shank of screw portion 6 is provided with bar portion external screw thread 9, and the size of the angle γ of the axle center formation of described bar portion external screw thread 9 and screw 2 is 65 °.
Described internal fixation plate 1 is connected by screw 2 and patella, and screw head 5 is set in screw fixed hole 3 and head external screw thread 8 extrudes triangular structure forms swelling and fix.
Embodiment 2:
All the other are with embodiment 1, a kind of patella fixture as shown in Figure 2-5, and described projection 4 can be flower type structure as shown in Figure 5, and screw fixed hole 3 is circumferentially with at least one circle flower type structure along its inwall.
Clinical practice example:
When operation uses, first select and mate with patella shape, the internal fixation plate 1 of suitable size, first can carry out suitable bending with two screwdrivers to internal fixation plate 1 moulding, internal fixation plate 1 to be fitted Patella fracture part, after being adjusted to proper angle, hex(agonal)screw cutter is embedded in the blind hole 7 of screw head 5, screw 2 is screwed in the screw fixed hole 3 of internal fixation plate plate 1 by the hexagonal plum-shaped structure being rotated blind hole 7 head end by hex(agonal)screw, now, projection 4 in screw fixed hole 3 is press-fitted gradually with the head external screw thread 8 of screw head 5, screw 2 is screwed into gradually after screw is adjusted to suitable angle, head external screw thread 8 extrudes two-layer protruding 4 formation swellings successively and fixes, namely fixing head 1 patella shape is in aggregates.
If the Patella fracture block still having part cracked cannot be eaten by screw 2, can the suture pin hole 10 on its periosteum and internal fixation plate 1 be tied a knot fixing with suture.
Below the embodiment that is preferably that this utility model is created is illustrated, but this utility model is created and is not limited to described embodiment, those of ordinary skill in the art can also make all equivalent modification or replacement under the prerequisite without prejudice to this utility model creative spirit, and these equivalent modifications or replacement are all included in the application's claim limited range.
Claims (10)
1. a patella fixture, comprise internal fixation plate (1) and screw (2), it is characterized in that: described internal fixation plate (1) its circumference run through be provided with inside and outside two circle screw fixed hole (3), described screw fixed hole (3) within it wall is provided with projection (4);
Described internal fixation plate (1) is connected and fixed by screw (2) and patella.
2. a kind of patella fixture according to claim 1, is characterized in that: described fixing head (1) runs through in its circumference and is provided with at least one circle suture hole (10).
3. a kind of patella fixture according to claim 1, it is characterized in that: described screw (2) comprises screw head (5) and shank of screw portion (6), wherein the inner side of screw head (5) is provided with blind hole (7), the lateral wall of screw head (5) is provided with head external screw thread (8), and the lateral wall of shank of screw portion (6) is provided with bar portion external screw thread (9).
4. a kind of patella fixture according to claim 1 and 2, it is characterized in that: on the inwall of described screw fixed hole (3), circumference is parallel is provided with two circle projections (4), described projection (4) is triangular structure, and head external screw thread (8) extruding triangular structure forms swelling and fixes.
5. a kind of patella fixture according to claim 1 and 2, it is characterized in that: described internal fixation plate (1) is for having the petal platy structure of curvature, and the axial cross section of screw fixed hole (3) and screw head (5) is trapezium structure.
6. a kind of patella fixture according to claim 1 and 2, rises and is characterised in that: the described number being positioned at the screw fixed hole (3) of internal fixation plate (1) inner ring is 1 ~ 3; The number being positioned at the screw fixed hole (3) of internal fixation plate (1) outer ring is 5 ~ 8.
7. a kind of patella fixture according to claim 3, is characterized in that: the termination of described blind hole (7) is hexagonal plum-type structure.
8. a kind of patella fixture according to claim 3, is characterized in that: the size of the angle α that the lateral wall of described screw head (5) and the axle center of screw (2) are formed is 15 ~ 45 °;
The size of the angle β of the axle center formation of described head external screw thread (8) and screw (2) is 75 ~ 85 °;
The size of the angle γ of the axle center formation of described bar portion external screw thread (9) and screw (2) is 60 ~ 70 °.
9. a kind of patella fixture according to claim 1 and 2, is characterized in that: the curvature of described internal fixation plate (1) is 9 ~ 15 °, and thickness is 3 ~ 5mm, and diameter is 30 ~ 60mm.
10. a kind of patella fixture according to claim 1 or 3, it is characterized in that: the length of described screw (2) is 8 ~ 14mm, wherein the length of screw head (5) is 2.5 ~ 3.5mm, and the length of shank of screw portion (6) is 4.5 ~ 11.5mm.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420516258.2U CN204092147U (en) | 2014-09-10 | 2014-09-10 | A kind of patella fixture |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420516258.2U CN204092147U (en) | 2014-09-10 | 2014-09-10 | A kind of patella fixture |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN204092147U true CN204092147U (en) | 2015-01-14 |
Family
ID=52260619
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201420516258.2U Expired - Fee Related CN204092147U (en) | 2014-09-10 | 2014-09-10 | A kind of patella fixture |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN204092147U (en) |
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105213013A (en) * | 2015-09-08 | 2016-01-06 | 创生医疗器械（中国）有限公司 | Multi-shaft locking blade plate |
| CN109567888A (en) * | 2019-01-21 | 2019-04-05 | 北京爱康宜诚医疗器材有限公司 | Kneecap tendon hapteron |
| WO2019157853A1 (en) * | 2018-02-13 | 2019-08-22 | 倪明 | Ligament fixator for knee joint surgery |
| US10765462B2 (en) | 2018-09-11 | 2020-09-08 | DePuy Synthes Products, Inc. | Patella bone plate and methods of fixation |
| US10905478B2 (en) | 2015-09-04 | 2021-02-02 | DePuy Synthes Products, Inc. | Patella bone plate and methods of fixation |
| CN112773577A (en) * | 2021-02-09 | 2021-05-11 | 北京爱康宜诚医疗器材有限公司 | Vertebral body prosthesis |
-
2014
- 2014-09-10 CN CN201420516258.2U patent/CN204092147U/en not_active Expired - Fee Related
Cited By (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US10905478B2 (en) | 2015-09-04 | 2021-02-02 | DePuy Synthes Products, Inc. | Patella bone plate and methods of fixation |
| US11690658B2 (en) | 2015-09-04 | 2023-07-04 | DePuy Synthes Products, Inc. | Patella bone plate and methods of fixation |
| CN105213013A (en) * | 2015-09-08 | 2016-01-06 | 创生医疗器械（中国）有限公司 | Multi-shaft locking blade plate |
| WO2019157853A1 (en) * | 2018-02-13 | 2019-08-22 | 倪明 | Ligament fixator for knee joint surgery |
| US10765462B2 (en) | 2018-09-11 | 2020-09-08 | DePuy Synthes Products, Inc. | Patella bone plate and methods of fixation |
| US11413078B2 (en) | 2018-09-11 | 2022-08-16 | DePuy Synthes Products, Inc. | Patella bone plate and methods of fixation |
| US11660132B2 (en) | 2018-09-11 | 2023-05-30 | DePuy Synthes Products, Inc. | Patella bone plate and methods of fixation |
| CN109567888A (en) * | 2019-01-21 | 2019-04-05 | 北京爱康宜诚医疗器材有限公司 | Kneecap tendon hapteron |
| CN112773577A (en) * | 2021-02-09 | 2021-05-11 | 北京爱康宜诚医疗器材有限公司 | Vertebral body prosthesis |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN204092147U (en) | A kind of patella fixture | |
| CN105496537B (en) | A kind of internal fixation steel plate of articulatio sternoclavicularis | |
| WO2016058243A1 (en) | Steel plate screw system with universal locking function | |
| CN202526285U (en) | Double-layer unilateral skeletal external fixator | |
| CN104546106B (en) | A kind of high holding-force bone screw | |
| CN201019825Y (en) | Pressurization locking power coax nail-plate device | |
| CN209301266U (en) | It is a kind of freely to adjust pelvis external fixed mount | |
| CN204951039U (en) | Device for repairing ligament or tendon defect | |
| CN103800065A (en) | Malleolus medialis fixing steel plate system | |
| CN104095676B (en) | A kind of tibial plateau inner prop locking steel plate | |
| CN110279447B (en) | Combined spiral reinforced bone anchor | |
| CN203953787U (en) | A kind of tibial plateau rear pillar locking steel plate | |
| CN202060854U (en) | Bone fracture plate with combination locking holes | |
| CN205658941U (en) | Foraminiferous interface screw | |
| CN211066974U (en) | Stable tension lock nail for femoral neck fracture angle | |
| CN105055007A (en) | Posterior spine fixing device | |
| CN104083202A (en) | Tibial plateau posterior column locking steel plate | |
| CN203988328U (en) | A kind of dynamic pressurized double-head hollow nail | |
| WO2017166423A1 (en) | Locking and external-fixation device for treatment of tibial fracture | |
| CN208974076U (en) | The inside and outside double fixed systems of fracture | |
| CN202477833U (en) | Degradable magnesium alloy orthopedic intramedullary tension screw spike | |
| CN207286128U (en) | Fracture of calcaneus inner fixing device | |
| CN203425018U (en) | Shoulder joint dynamic-static combined regulating external fixing device | |
| CN209136835U (en) | Bone-knitting device on the inside of novel distal radius | |
| CN208974080U (en) | The inside and outside double fixing screws of fracture |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20150114 Termination date: 20180910 |