CN201822905U - Angle-adjustable self-locking anatomical type steel plate fixing device for lower tibia segment - Google Patents
Angle-adjustable self-locking anatomical type steel plate fixing device for lower tibia segment Download PDFInfo
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- CN201822905U CN201822905U CN201020525718XU CN201020525718U CN201822905U CN 201822905 U CN201822905 U CN 201822905U CN 201020525718X U CN201020525718X U CN 201020525718XU CN 201020525718 U CN201020525718 U CN 201020525718U CN 201822905 U CN201822905 U CN 201822905U
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- steel plate
- locking ring
- adjustable self
- angle adjustable
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Abstract
The utility model discloses an angle-adjustable self-locking anatomical type steel plate fixing device for a lower tibia segment, which comprises an anatomical type steel plate and locking screws. The steel plate is provided with a diaphysis segment and a metaphysic segment, at least one locking component is further arranged on the steel plate and consists of a mounting hole and a locking ring, the mounting hole is positioned on the steel plate, the groove-type inner wall of the mounting hole forms an annular groove, the locking ring is disposed in the annular groove and provided with a space for vertical and circumferential movement, and internal threads are disposed on the wall of an inner hole of the locking ring. The angle-adjustable self-locking anatomical type steel plate fixing device has the adjustable locking angle and a self-locking mechanism, facilitates clinical treatment, and effectively improves treatment effect of comminuted fracture of a joint position of the lower tibia segment.
Description
Technical field
This utility model relates to clinical medicine fractures technical field, relates in particular to a kind of steel plate fixture that is used for the treatment of tibia hypomere joint fracture.
Background technology
Tibia hypomere joint portion syntripsis is caused by the high-energy wound often, so bone and soft tissue injury are serious, natural disability rate height.Simultaneously, because tibia hypomere configuration of surface is irregular, surrounding soft tissue covers and lacks, cause specific such as the complexity of local biomechanics and blood circulation structure makes clinical treatment have certain degree of difficulty in addition, and the union of fracture difficulty, influence function of joint easily.Therefore, in clinical medicine domain, the treatment to tibia hypomere joint portion syntripsis at present remains a relatively problem of difficulty.
At present, to the fracture of this peripheral region, class joint, the steel plate with anatomic form that is to use that generally adopts carries out the Therapeutic Method of internal fixation clinically.The common anatomical plate that prior art is traditional formalizes when producing in advance, to lead during operation to bore and place on the screw of steel plate, the drill bit that uses respective diameters is along leading boring, reach the needed degree of depth after, adopt conventional screw to fix with respective diameters and length.Its fixed mechanism that resets is: with main sclerite and steel plate tension, make surface both produce very big frictional force by conventional screw, sclerite is attached on the steel plate, thus stable fracture, and the form of its reduction of the fracture must be complied with the form of reversing of steel plate fully.Therefore, use the common anatomical plate of this class will obtain reduction with good internal fixation effect, must satisfy following two conditions: the one, steel plate to reverse form consistent with the bone surface form; The 2nd, close on the sclerite of joint portion and can not pulverize very much, sclerotin can not be too loose, can make screw that enough abilities that lifts the bone piece are arranged like this, makes the enough frictional force of generation between sclerite and steel plate, thus the bone fixation folded block.But a lot of clinically patients can not satisfy above-mentioned condition fully, thereby occur some postoperative complications easily.
For this reason, on the basis of the common anatomical plate of tradition, improve in recent years, to design female thread near the screw inwall of joint segments steel plate and constitute the locking screw, use simultaneously in the design of head of screw outer wall and be with externally threaded lock screw and its pairing, in case lock screw be tightened the locking screw in, lock screw and steel plate will by in advance the customization angle, utilize threaded engagement mechanism to lock.The fixation principle of this class steel plate is compared difference with traditional type and is: because irregular near the bone of joint segments, therefore be to utilize threaded engagement mechanism, dependence lock screw that the bone piece is hung on the steel plate, rather than rely on frictional force that the bone piece is attached on the steel plate.The distance of bone piece and steel plate can be regulated according to actual needs, makes that the reduction of the fracture can be according to individual bone para-position to the line actual arrangement, and not necessarily complies with the steel plate form fully.Therefore, the anatomical plate after the improvement has overcome the drawback of traditional common anatomical plate to a certain extent, still, still exists following technological deficiency:
(1) direction of steel plate and lock screw thereof preestablishes when producing, and locking direction is fixed, and can not regulate as required when mounted.Even screw is positioned at fracture, bone defective region or non-main osteomiosis piece in some classification of fracture, also fixed-direction can't be changed, thereby main sclerite can not be fixed, have a strong impact on fixed effect, even the phenomenon of solid failure occurred.
(2) form of reversing of steel plate all is foreign imitation like products and deciding, and formalizes in advance when producing, and variant with the state individual human, the not exclusively situation of coupling therefore can occur, thereby has brought difficult and had a strong impact on fixed effect for clinical treatment.
The utility model content
The purpose of this utility model is to overcome the deficiencies in the prior art, and a kind of tibia hypomere anatomical plate fixture that locks the angle scalable and have self-lock mechanism is provided, and to make things convenient for clinical treatment, improves the therapeutic effect of tibia hypomere joint portion syntripsis.
The purpose of this utility model is achieved by the following technical programs:
A kind of tibia hypomere angle adjustable self-locking anatomical plate fixture that this utility model provides comprises anatomical plate and lock screw, and described steel plate has key section and metaphyseal segment; In addition, described steel plate is provided with at least one locked component, and described locked component is made of installing hole and locking ring; Described mounting hole site is on steel plate, and its inwall is groove-shaped and the looping groove, and described locking ring is arranged in the cannelure and has and reaches circumferential activity space up and down, and the inner hole wall of locking ring has female thread.This utility model uses lock screw and locking ring threaded engagement to fix.Locking ring sidespin and rotating in a circumferential direction up and down in cannelure, its up and down the angle of sidespin be advisable with 5～10 °.Sidespin locking ring according to actual needs just can conversion obtain needed locking angle.
Be to obtain bigger locking direction, it is eccentric skewed that the endoporus of locking ring described in the utility model is, and when the locking ring certain angle that rotates in a circumferential direction in cannelure, just can make the endoporus of locking ring have different incline directions like this.The endoporus of locking ring axially and the angle between the vertical direction of hole end surface be advisable with 10～20 °.
Further, locking ring described in the utility model has fracture and is " C " shape, thereby makes locking ring have elasticity in the horizontal, is expanded after the screw locking and closely contacts with cannelure, has increased frictional force between the two, thereby has helped improving steadiness.For improving constant intensity and stablizing effect better, the bottom land of described cannelure and the outer wall of locking ring are concavo-convex slotting scarf and close, and for example, the bottom land of described cannelure is the indent arc; The outer wall of described locking ring is convex and with suitable at the bottom of the arcuate groove of cannelure, makes the combining more closely and firmly of locking back locking ring and cannelure.
For ease of the adjusting operation to the locking ring travel direction, locking ring described in the utility model front is evenly equipped with recess.In addition, this utility model also comprises the angular adjustment sleeve, and telescopic bottom of described angular adjustment and locking ring are suitable, and has and locking ring fracture and the corresponding salient point of recess.During operation,,, just can regulate the angle direction of operational lock ring easily by the sidespin or the angular adjustment sleeve that rotates in a circumferential direction up and down with corresponding fracture and the recess that inserts locking ring of the salient point of angular adjustment sleeve bottom.
About the fixing point on the steel plate, specifically can take following setting to strengthen the steadiness of steel plate: the metaphyseal segment of steel plate described in the utility model is provided with three locked components and is " product " shape and distributes; Also be provided with the locking screw between the locked component that the key section of described steel plate is arranged.
For obtaining better to reverse form to satisfy the coupling demand, steel plate described in the utility model is the soupspoon shape, and its key section is long dried shape, and width is 1.0～2.0cm; Its metaphyseal segment is and expands wide type and reversing forward, and twist section is 10～15cm, and windup-degree is 60 °～80 °, and expanding the place is 2.0 * 2.0～2.5 * 2.5cm
2
The utlity model has following beneficial effect:
(1) locked component that is made of installing hole and locking ring is set on steel plate, by regulating the angle direction of locking ring, make lock screw can obtain to regulate on a large scale locking direction as required, use and flexible operation, be convenient to clinical treatment, effectively improved fixed effect.
(2) locking ring has elasticity in the horizontal, outwards expands after the locking and has increased frictional force with cannelure; And be concavo-convex slotting scarf with cannelure and close, both combinations are close fit more, thereby has effectively improved the locking constant intensity.
(3) steel plate reverse the individual morphology that form more meets compatriots, satisfied the coupling demand better, not only made things convenient for clinical treatment, and improved fixed effect.
(4) through biomechanics test, this utility model anatomical plate reverse, aspects such as four-point bending, vertical compression rigidity all reach standard-required.
Description of drawings
Below in conjunction with embodiment and accompanying drawing this utility model is described in further detail:
Fig. 1 is the front view of this utility model embodiment anatomical plate;
Fig. 2 is the vertical view of Fig. 1;
Fig. 3 is the front enlarged diagram of steel plate metaphyseal segment embodiment illustrated in fig. 1;
Fig. 4 is the A-A cutaway view (amplification) of Fig. 3;
Fig. 5 is the B-B cutaway view (contrary turning 90 degrees amplified) of Fig. 3;
Fig. 6 is the telescopic structural representation of this utility model embodiment angular adjustment;
Fig. 7 leads in this utility model embodiment operating process to bore and the telescopic assembling sketch map of angular adjustment;
Fig. 8 is the assembling sketch map of this utility model embodiment lock screw and anatomical plate.
Among the figure: steel plate 1, key section 1a, metaphyseal segment 1b, lock screw 2, angular adjustment sleeve 3 is led and is bored 4, thread head 4a, locked component 5, locking screw 6, installing hole 7, locking ring 8, endoporus 8a, fracture 8b, recess 8c, outer wall 8d, cannelure 9, bottom land 9a
The specific embodiment
Fig. 1～Figure 8 shows that embodiment of the present utility model comprises anatomical plate 1, lock screw 2, angular adjustment sleeve 3 and leads brill 4.
Make spiral CT three-D image anatomic measurement by normal adults tibia hypomere lateral surface is reversed form, draw the parameter of reversing of the anatomical plate that is fit to compatriots' tibia hypomere form, design the anatomical plate 1 that is fit to compatriots according to this.As depicted in figs. 1 and 2, present embodiment steel plate 1 is the soupspoon shape, has key section 1a and metaphyseal segment 1b.Wherein, key section 1a is long dried shape, and width is 1.7cm; Metaphyseal segment 1b is and expands wide type, and reverses forward, and twist section is 12cm, and the maximum twist angle is 80 °, and expanding the place is 2.4 * 2.4cm
2
As shown in figures 1 and 3, the key section 1a of steel plate is provided with some locked components 5 and locking screw 6, and the arrangement of single file space, and strengthening its quantity with steel plate length also can increase.The metaphyseal segment 1b of steel plate is provided with three locked components 5 and is " product " shape and distributes.
Locking screw 6 end faces are rounded, and last 1/3 of its cutting plane be an inverted cone, and 2/3 is directly barrel-shaped and has female thread down, but screw 7 ° of sidespins in screw.
As shown in Figure 3, locked component 5 is made of installing hole 7 and locking ring 8.Installing hole 7 is positioned on the steel plate, and its inwall is groove-shaped and looping groove 9; Locking ring 8 is arranged in the cannelure 9 and has and reaches circumferential activity space up and down, and maximum angle of sidespin is 5 ° about it, and can rotate in a circumferential direction.
As shown in Figure 4 and Figure 5, the endoporus 8a of locking ring 8 has female thread, and endoporus 8a is eccentric skewed, its axially and the angle between the vertical direction of hole end surface be 10 °.Locking ring 8 has fracture 8b and is " C " shape, and the front of locking ring 8 is evenly equipped with recess 8c.In addition, the bottom land 9a of cannelure 9 is the indent arc, and the outer wall 8d of locking ring 8 is convex and suitable with 9a at the bottom of the arcuate groove of cannelure, thereby realizes that both close by concavo-convex slotting scarf, makes the combining more closely and firmly of locking back locking ring 8 and cannelure 9.
As shown in Figure 6, the bottom of angular adjustment sleeve 3 and locking ring 8 are suitable, and have and locking ring 8 fracture 8b and the corresponding salient point 3a of recess 8c.
The present embodiment operational approach is as follows:
(1),, temporary fixed with reduction forceps or Kirschner wire along distal tibial anatomical shape lay steel plate at first with the reduction of the fracture.
(2) for locking screw 6, bore 4 and place on the locking screw 6 and make and lead the thread head 4a that bores 4 bottoms and be screwed into locking screw 6 internal fixation leading, bore 4 and hole along leading with the drill bit of respective diameters.
(3) for locked component 5, with corresponding fracture 8b and the recess 8c that inserts locking ring 8 of the salient point 3a of angular adjustment sleeve 3 bottoms, by the sidespin or the angular adjustment sleeve 3 that rotates in a circumferential direction up and down, to regulate the angle direction of operational lock ring 8.In cannelure 9,, can make the endoporus 8a of locking ring 8 have different incline directions and angle by rotating in a circumferential direction and the certain angle of sidespin locking ring 8 up and down.The inner hole thread eccentric angle of locking ring 8 is 10 °, and 5 ° of can be in cannelure 9 maximum sidespins up and down of locking ring 8, and therefore the adjusting angle at a certain direction locking ring 8 can reach 15 °.This moment, then locking ring 8 same adjusting angle on symmetric direction can reach 15 ° if locking ring 8 is rotated in a circumferential direction 180 °, and therefore, maximum adjusting angle just can reach 30 °.
(4) as shown in Figure 7, use to lead and bore 4 insertion angular adjustment sleeves 3, it is fixing that the thread head 4a that leads brill 4 bottoms is screwed in locking ring 8 screw threads; Drill bit with respective diameters bores 4 borings along leading.
(5) depth finder depth measurement degree.
(6) be screwed into the lock screw 2 of respective diameters and length, the bone fixation folded block.Locking ring 8 expands and the angle of locking steel plate 1 and lock screw 2.Lock screw 2 on steel plate 1 with the assembling of locked component 5 as shown in Figure 8.
(7) x-ray fluoroscopy inspection.
Claims (10)
1. a tibia hypomere angle adjustable self-locking anatomical plate fixture comprises anatomical plate (1) and lock screw (2), and described steel plate (1) has key section (1a) and metaphyseal segment (1b); It is characterized in that: described steel plate (1) is provided with at least one locked component (5), and described locked component (5) is made of installing hole (7) and locking ring (8); Described installing hole (7) is positioned on the steel plate (1), and its inwall is groove-shaped and looping groove (9), and described locking ring (8) is arranged in the cannelure (9) and has and reaches circumferential activity space up and down, and endoporus (8a) wall of locking ring (8) has female thread.
2. tibia hypomere angle adjustable self-locking anatomical plate fixture according to claim 1 is characterized in that: described locking ring (8) in cannelure (9) up and down the angle of sidespin be 5～10 °.
3. tibia hypomere angle adjustable self-locking anatomical plate fixture according to claim 1 is characterized in that: the endoporus (8a) of described locking ring (8) is eccentric skewed, its axially and the angle between the vertical direction of hole end surface be 10～20 °.
4. according to claim 1 or 2 or 3 described tibia hypomere angle adjustable self-locking anatomical plate fixtures, it is characterized in that: described locking ring (8) has fracture (8b) and is " C " shape.
5. tibia hypomere angle adjustable self-locking anatomical plate fixture according to claim 4 is characterized in that: the bottom land (9a) of described cannelure (9) is concavo-convex slotting scarf with the outer wall (8d) of locking ring (8) and closes.
6. tibia hypomere angle adjustable self-locking anatomical plate fixture according to claim 5, it is characterized in that: the bottom land (9a) of described cannelure (9) is the indent arc; The outer wall (8d) of described locking ring (8) is convex and suitable with (9a) at the bottom of the arcuate groove of cannelure.
7. tibia hypomere angle adjustable self-locking anatomical plate fixture according to claim 1, it is characterized in that: described locking ring (8) front is evenly equipped with recess (8c).
8. tibia hypomere angle adjustable self-locking anatomical plate fixture according to claim 7, it is characterized in that: also comprise angular adjustment sleeve (3), the bottom of described angular adjustment sleeve (3) and locking ring (8) are suitable, and have the salient point (3a) corresponding with locking ring fracture (8b) and recess (8c).
9. tibia hypomere angle adjustable self-locking anatomical plate fixture according to claim 1 is characterized in that: the metaphyseal segment of described steel plate (1b) is provided with three locked components (5) and is " product " shape and distributes; Also be provided with locking screw (6) between the locked component (5) that the key section (1a) of described steel plate is arranged.
10. tibia hypomere angle adjustable self-locking anatomical plate fixture according to claim 1, it is characterized in that: described steel plate (1) is the soupspoon shape, and its key section (1a) is long dried shape, and width is 1.0～2.0cm; Its metaphyseal segment (1b) is and expands wide type and reversing forward, and twist section is 10～15cm, and windup-degree is 60 °～80 °, and expanding the place is 2.0 * 2.0～2.5 * 2.5cm
2
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201020525718XU CN201822905U (en) | 2010-09-09 | 2010-09-09 | Angle-adjustable self-locking anatomical type steel plate fixing device for lower tibia segment |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201020525718XU CN201822905U (en) | 2010-09-09 | 2010-09-09 | Angle-adjustable self-locking anatomical type steel plate fixing device for lower tibia segment |
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| Publication Number | Publication Date |
|---|---|
| CN201822905U true CN201822905U (en) | 2011-05-11 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201020525718XU Expired - Lifetime CN201822905U (en) | 2010-09-09 | 2010-09-09 | Angle-adjustable self-locking anatomical type steel plate fixing device for lower tibia segment |
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| Country | Link |
|---|---|
| CN (1) | CN201822905U (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102525636A (en) * | 2012-01-11 | 2012-07-04 | 黄长明 | Fixing bone nail capable of being broken and locking plate comprising bone nail |
| CN105326549A (en) * | 2014-08-11 | 2016-02-17 | 天津市康尔医疗器械有限公司 | Inner-side locking plate for distal tibia |
| CN109730758A (en) * | 2019-02-22 | 2019-05-10 | 艾奥斯(上海)医疗科技有限公司 | A kind of trilobal cross locking bone fracture plate for being conducive to increase stability |
-
2010
- 2010-09-09 CN CN201020525718XU patent/CN201822905U/en not_active Expired - Lifetime
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102525636A (en) * | 2012-01-11 | 2012-07-04 | 黄长明 | Fixing bone nail capable of being broken and locking plate comprising bone nail |
| CN105326549A (en) * | 2014-08-11 | 2016-02-17 | 天津市康尔医疗器械有限公司 | Inner-side locking plate for distal tibia |
| CN109730758A (en) * | 2019-02-22 | 2019-05-10 | 艾奥斯(上海)医疗科技有限公司 | A kind of trilobal cross locking bone fracture plate for being conducive to increase stability |
| CN109730758B (en) * | 2019-02-22 | 2020-06-02 | 艾奥斯(上海)医疗科技有限公司 | Trilobal locking bone fracture plate beneficial to stability increase |
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Legal Events
| Date | Code | Title | Description |
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| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CX01 | Expiry of patent term | ||
| CX01 | Expiry of patent term |
Granted publication date: 20110511 |