CN1255081C - External fixer for radius distal fracture - Google Patents

External fixer for radius distal fracture Download PDF

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Publication number
CN1255081C
CN1255081C CN 200310106381 CN200310106381A CN1255081C CN 1255081 C CN1255081 C CN 1255081C CN 200310106381 CN200310106381 CN 200310106381 CN 200310106381 A CN200310106381 A CN 200310106381A CN 1255081 C CN1255081 C CN 1255081C
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short
rod
fixed
length
fixing
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CN 200310106381
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CN1543915A (en
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陈一心
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南京市鼓楼医院
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Abstract

本发明涉及一种治疗桡骨远端骨折的外固定器。 The present invention relates to an external fixator for the treatment of distal radius fractures. 本发明采用在长、短固定杆连接的球头结构设置球形垫,在长、短固定杆上设置偏心销,形成球头结构锁定结构,在长、短固定杆内中空部分设置长、短螺杆,其上的滑块与长、短固定杆上的固定块接触连接,固定块与长、短固定杆接触的一面上设置螺纹针固定槽,实现治疗桡骨远端骨折的作用。 The present invention employs a long, a short fixed ball head structure is provided a spherical rod connector pads, long, short rod an eccentric fixed pin, forming a ball head structure locking structure, long, short hollow portion of the fixed rod disposed long and short screw slider on which the long and short lever a fixed block connected to the contact, on one side of the fixed block length, the short fixing screw lever contact pin fixing groove, to achieve therapeutic effect of distal radius fractures. 解决了以往类似外固定支架力学性能差,螺纹针不可调节,不能逐渐使腕关节、前臂有一定的活动范围而得以锻炼恢复。 Similar to solve the differential mechanical properties of the conventional external fixator, the needle thread can not be adjusted, it can gradually make wrist, forearm certain range exercise activity is restored. 本发明结构简单、效果好,成本低,重量轻。 The present invention is of simple structure, effective, low cost, light weight.

Description

桡骨远端骨折外固定器 Distal radius fractures external fixator

技术领域 FIELD

本发明涉及一种骨折外固定装置,特别涉及一种治疗桡骨远端骨折的外固定器。 The present invention relates to one kind of external fracture fixation devices, and particularly relates to a method of treating external fixator for fracture of the distal radius.

背景技术 Background technique

桡骨远端骨折是临床上的常见病、多发病。 Distal radial fracture is a common clinical disease. 临床上治疗的办法一是非手术治疗,即采用手法复位夹板或石膏外固定,但这种方法易产生骨折断移位,且比例较高;另一种就是手术治疗,采用切开复位钢板内固定,再二次手术取出钢板,其中如果骨折端粉碎或骨质疏松,则远端就无法用螺钉固定,后期会出现桡骨缩短,且手术后害怕骨折断移位也常用石膏外固定。 Way to treat a clinically non-surgical treatment, i.e. using manual reduction splint or cast is fixed, but this method is easy to produce bone fracture displacement, and a higher proportion; the other is surgery, open reduction and plate fixed within , then second operation to remove the steel sheet, wherein if the fracture or pulverization of osteoporosis, the distal end can not be fixed with screws, the latter will be shortened radius and post-operative bone fracture displacement fear also commonly cast immobilization.

采用石膏外固定使得腕关节不能进行早期功能锻炼,病人会出现腕关节疼痛、活动受限,严重影响病人的生活。 Using plaster immobilization of the wrist can not make early exercise, the patient will appear wrist joint pain, limited mobility, seriously affecting the patient's life.

为了解决上述难题,人们使用外固定支架来增强骨折断复位和恢复,特别是对于治疗桡骨远端粉碎性骨折,效果明显优于单纯夹板或石膏外固定;对于需要切开复位钢板内固定的病人,结合外固定支架,效果明显优于单纯钢板内固定。 To solve the above problems, people use external fixation to enhance bone fracture reduction and recovery, particularly for the treatment of distal radius fractures, better than simple external fixation splint or cast; respect to the fixed plate patient in need of open reduction and internal fixed, external fixator, the effect was better than steel. 但是,目前极大多数外固定支架存在着严重的缺陷,如支架重、体积大、结构复杂、部件多且棱角多、操作复杂,妨碍病人的日常生活,易致掌骨骨折等并发症。 However, at present the vast majority of external fixation there are serious defects, such as a stent heavy, bulky, complex structure, and a multi-angular member more complicated to operate, interfere with the patient's daily life complications, prone to cause metacarpal fractures.

在本发明作出之前,也有CN 2354514Y的“单侧多功能尺桡骨外固定架”实用新型专利存在。 Prior to the present invention, there is CN 2354514Y "Unilateral multifunctional external fixator radioulnar" present utility model patent. 该专利的技术内容显示有如下缺陷:1、不能随着病人桡骨远端骨折的愈合而逐步增加腕关节功能锻炼范围;2、夹骨针头绕架体360度旋转是多余的(因为架体本身就可旋转),且夹骨针头的旋转使得支架不能尽可能地贴近人体,削弱了外固定支架的力学性能;3、该外固定支架的延长器是一种粗调式结构,不够精确;4、对于螺纹针位置要求高,如出现偏差也无法调整,而且螺纹针的间距也没有选择余地;5、相对来说,该外固定支架构件繁多、结构笨重。 This patent has the following technical content display defects: 1, as the patient is not healing fractures of the distal radius and wrist exercise gradually increase range; 2, the clip 360 degree rotation about a bone needle body frame is redundant (because the frame itself can be rotated), and the clamp bracket such that the rotation of the bone needle can not close as possible to the body, weaken the mechanical properties of external fixation; 3, external fixation extender which is a coarse structure, not precise enough; 4, for high thread needle position requirements, such as the deviations can not be adjusted, and the needle thread pitch has no choice; 5, relatively speaking, the range of external fixation member, bulky structure.

发明内容 SUMMARY

本发明的目的就在于克服上述缺陷,设计、研制一种专用于治疗桡骨远端骨折的外固定器。 Object of the present invention to overcome the above drawbacks is that the design, development of a dedicated external fixator for the treatment of distal radius fractures.

本发明的技术方案是:桡骨远端骨折外固定器,有长固定杆、短固定杆,长固定杆与短固定杆之间通过球头结构连接,长固定杆、短固定杆上分别设置固定块,球头结构的联接套与长固定杆一端连接,球头设置在联接套内,球头一端连接球头杆,球头杆另一端连接另一球头,该另一球头设置在另一联接套内,该联接套连接在短固定杆上,其主要技术特征在于在长固定杆、短固定杆与联接套之间内分别设置球形垫,球头与球形垫的球形面接触连接,在长固定杆、短固定杆上分别设置偏心销,偏心销插入长固定杆、短固定杆内的部分上有槽口,与球形垫后部接触连接,该槽口长度大于球形垫后部接触面长度。 Aspect of the present invention is: distal radius fracture fixators, there is a fixed length rod connected by a ball head structure between the short fixed bar, and the short length fixed rod fixed rod, rod length is fixed, a fixed short stationary rod are provided block ball coupling sleeve is connected to the structure of the long end of the fixing rod, the ball head is arranged at the coupling sleeve, connected at one end ball ball stud, the ball stud and the other end connected to the other ball head, the ball head is provided further on the other a coupling sleeve, the coupling sleeve is connected to a short fixed bar, wherein the main technical pads are respectively disposed within the spherical fixing bar between the long and short fixed rod and coupling sleeve, the spherical ball and the spherical surface contact pad is connected, long fixed rod, short rod fixing pin are disposed eccentric, the eccentric pin inserted into the long fixing bar, the fixing portion of the inner rod has a short notch, a rear pad in contact with the spherical connection, the slot length is greater than the spherical contact with the rear pad surface length.

其进一步的技术方案是:其主要技术特征在于在长固定杆、短固定杆内部是中空的,其内设置长螺杆、短螺杆,两个滑块分别螺纹连接在长螺杆、短螺杆上,此两个滑块分别与长固定杆、短固定杆外上部的固定块接触连接。 Further technical solution: The main feature consists in fixing a long shaft, the inner short fixed rod is hollow, is provided within the screw length, short axis, the two sliders are screwed on the screw length, screw short, this two slides fixed respectively long rods, short rods fixed to the upper fixing block is connected to the outer contacts.

本发明的优点和效果在于在保持长、短固定杆能够独立背伸、掌曲、尺偏、桡偏及360度旋转同时,球头结构、固定块的作用能使外固定器两端固定杆分别与桡骨、第二掌骨纵轴平行,从而尽可能地使固定杆与桡骨、掌骨靠近,减少了骨干与固定杆的距离,加强外固定器的几何构型的力学性能,减小外固定器的空间范围,方便了患者的日常生活;联接套、偏心销的作用使得随着手术后的恢复,可松动联接套、偏心销,即可先松动短固定杆上的联接套、偏心销,使腕关节获得早期功能锻炼,如背伸、掌曲、尺偏、桡偏,允许前臂旋转、锻炼,然后再松动长固定杆上的联接套、偏心销,使腕关节、前臂活动范围更进一步扩大;固定块可在固定杆上部平面上转动360度,以及固定块下部与固定杆接触的一面上设置的多个螺纹针固定槽,降低了对螺纹针位置的 Advantages and effects of the present invention is to maintain a long, a short bar can be fixed independently dorsiflexion song palm ulnar, radial deviation and simultaneously rotate 360 ​​degrees, the ball head structure, the role of both ends of the fixing block enables external fixation rod respectively radial, parallel to the longitudinal axis of the second metacarpal bone, so that the radial fixing rod as much as possible, metacarpal close, reduces the distance the fixed rod backbone, strengthening the mechanical properties of the external fixator geometry, reducing the external fixator spatial extent, to facilitate the daily life of the patient; coupling sleeve, so that the eccentric pin with the recovery operation, the coupling sleeve can be loosened, the eccentric pin, fixed to the first short rod loose coupling sleeve, the eccentric pin, so that wrist obtained early exercises, such as dorsiflexion, the song palm, ulnar, radial deviation, allowing rotation of the forearm, exercise, and then loosening the fixed length rod coupling sleeve, the eccentric pin the wrist, forearm further expanded range of motion ; fixing block stationary rod may be rotated in the planar portion 360, and a plurality of thread needle fixing groove on one side of the lower fixed contact block and the fixed shaft, the threaded lowered needle position 求,螺纹针的连接变得非常方便,降低了手术难度,节约了手术时间;根据韧带牵拉整复固定术原理,通过调节螺杆,使滑块在固定杆内移动,形成内移动,从而带动固定块移动,并且内螺杆以毫米级推动滑块移动,使骨折端的近端和远端牵开得到精确保证,避免腕关节韧带的进一步损伤,更能杜绝因突然猛力牵拉可能导致的螺纹针断裂、掌骨骨折等并发症;长固定杆、短固定杆内部中空,使得内螺杆可设置其内,减小了整个固定器的体积和重量,也使得固定器延长时稳定。 Seeking, the needle thread connection has become very convenient, reduce the difficulty of operation, saving operation time; puller according to the principles of the entire complex ligament fixation, by adjusting the screw, the slider is moved in the clamping lever is formed in the mobile, so as to drive fixed block movement, and the screw is driven slider millimeter, and that the fractures of the distal end of the proximal retractor guaranteed accurate, to avoid further damage to the wrist ligaments, more vigorously to prevent sudden pulling thread may result complications of needle breakage, metacarpal fracture; stable fixation rod length, short fixed rod hollow interior, so that the screw may be disposed therein, reducing the volume and weight of the fixture, the fixture also makes prolonged.

本发明结构简单,零部件少且少棱角,重量轻,对患者日常生活影响小,便于护理。 The present invention is of simple structure, fewer parts and less angular, light weight, small effect on patients' daily life, ease of care.

附图说明 BRIEF DESCRIPTION

图1——本发明结构原理示意图。 FIG Schematic structure of the present invention 1--.

图2——本发明具体应用示意图。 FIG 2-- particular application of the present invention FIG.

具体实施方式 Detailed ways

如图1所示,长固定杆1、短固定杆9中间通过球头结构连接,长固定杆1和短固定杆9合起来可总称为固定杆;球头结构包括两个球头8、两个联接套6、一根球头杆7,两个联接套7分别螺纹连接在长固定杆1、短固定杆9的一端上,两个球头8分别设置在两个联接套6内,球头杆7两端分别固定两个球头8;在联接套6内,在长固定杆1、短固定杆9与两个球头8之间设置球形垫5,球形垫5的球形面与球头8接触连接;在长固定杆1、短固定杆9上插入一偏心销4,偏心销4在长固定杆1、短固定杆9内部分的一面上设置有槽口14,该槽口14与球形垫5的背(后)面接触连接,该槽口14处的偏心销4形状与球形垫5背面的形状对应,本例中,球形垫5的背面形状是凹形圆弧,对应的偏心销4一面是突出的圆弧(在槽口14长度内),该槽口14的长度略大于球形垫5的长度或背面突出部分的长度,即二 1, the length of the fixing rod 1, a short intermediate connecting rod 9 is fixed by a ball head structure, and a short length of the fixed rod fixed rod 9 together may be collectively referred to fixation rod; ball head 8 comprises two ball, two a coupling sleeve 6, a ball stud 7, 7 are two coupling sleeve is screwed a rod fixed length, one end of a short fixed shaft 9, two ball head 8 are disposed in two coupling sleeve 6, the ball both ends of the arm 7 are fixed two ball head 8; in the coupling sleeve 6, a short fixed rod 8 is provided between the ball 9 and the fixed rod in two long ball pads 5, the spherical surface of the spherical ball pad 5 contact connection head 8; long fixing rod 1, the insertion rod 9 fixed to an eccentric short pin 4, the eccentric pin 41, a short lever on one side of the fixed portion 9 fixed to the long lever 14 has a notch, the notch 14 5 spherical pad back (rear) surface contact is connected, at the notch 14 of the eccentric pin 4 and the spherical shape of the back cushion 5 corresponding to the shape of the present embodiment, the spherical shape of the back cushion 5 is concave circular arc, corresponding to 4 is an eccentric pin projecting arcuate side (in the longitudinal slot 14), the length of the slot 14 is slightly greater than the length of the projecting portion of the length of the back surface 5 or spherical pads, i.e., two 接触面的长度,正好卡在球形垫5上、下两端;长固定杆1、短固定杆9内部是中空的,因此,在其内分别设置长螺杆2、短螺杆12,其二端设置在长固定杆1、短固定杆9上,可转动,在长固定杆1、短固定杆9的外端上设置有柱销13,旋转柱销13,则长螺杆2、短螺杆12可转动;长螺杆2、短螺杆12上分别设置一个滑块11,该滑块11也在长固定杆1、短固定杆9的中空内,滑块11上有螺纹,与长螺纹杆2、短螺纹杆12螺纹固定连接,二个滑块11的上部分别是二个固定块3,通过紧固螺钉10将固定块3与滑块11连接。 Length of the contact surface, just stuck on a spherical pad 5, at both ends; length of the fixed rod 1, the inner short fixed rod 9 is hollow, and therefore, a long screw is provided therein, respectively 2, short screw 12, the other end is provided long fixed rod 1 is provided with a pin 13 on the outer end of the short fixed bar 9, the rotary pin 13, the length of the screw 2, the short screw 12 may be rotated in a long fixing rod 1, 9 rotatably short fixed bar, the ; length of screw 2, the slider 11 are provided on a short screw 12, the slider 11 is also fixed rod length 1, the short hollow shaft 9 is fixed, a slider is threaded on the threaded rod 11 with two long, short thread screwing the connecting rod 12, two upper slider 11 are respectively fixed two blocks 3, 10 3 is connected to the fixed block slider 11 by fastening screws.

如图1、图2所示的使用示意,对桡骨远端骨折,在臂丛麻醉下,在桡骨18远端和第二掌骨17处各作两小切口,钝性分离致骨面,分别拧入两枚螺纹针15;在X线透视指导下,复位骨折端获得满意后,由固定块3将螺纹针15连接到长固定杆1、短固定杆9上;固定块3下部面上设置有多个螺纹针固定槽16,本发明中固定块3上有四个,一边二个,可调节螺纹针15距离选择使用;稍稍拧紧紧固螺钉10,通过球头结构,调整腕关节位置包括背伸、掌曲、尺偏和桡偏,将偏心销4旋转一定角度如50~80度,其槽口14转动,非槽口14的一面向前挤、顶球形垫5背面,使其锁紧球头结构;旋转柱销13,则使长螺杆2、短螺杆12在长固定杆1、短固定杆9中空部分内旋转,通过滑块11的移动带动固定块3沿长固定杆1、短固定杆9移动,将骨折端的近端、远端同时牵开,利用韧带牵拉整复固定 1, using the schematic shown in Figure 2, fracture of the distal radius, brachial plexus anesthesia, the radius 18 at the distal end 17 of the second metacarpal bone and for each of the two small incision, blunt dissection induced bone surface, are screwed the two threaded pins 15; under X-ray guidance, a satisfactory fracture after reset, block 3 is connected by a fixing pin 15 to the threaded rod fixed length 1, the short rod 9 is fixed; a lower surface of the fixed block 3 is provided with a a plurality of threaded pins fixed groove 16, in the present invention, the fixed block has four, two side, the needle thread 15 can be adjusted from choosing 3; slightly tighten the fixing screw 10, the ball structure, the position adjustment of the wrist comprising a backing extension, song palm, ulnar and radial deviation, the eccentric pin 4 is rotated a certain angle such as 50 to 80 degrees, the slot 14 which is rotated, the non-pressing forward side of the slot 14, the back pad 5 the spherical top, locks ball structure; rotation pin 13, so that the length of the screw 2, the short length 12 of the screw rod 1 is fixed, short fixing lever 9 to rotate within the hollow portion, the fixed block 3 is driven by moving the slider 11 along the length of the fixing rod 1, short fixed rod 9 is moved, the proximal end of the fracture, while the distal end of the retractor by pulling the entire complex ligaments fixing 最后拧紧紧固螺钉10。 Finally tighten the fixing screw 10. 需要调整时,重复上述步骤,直至合适为好。 When adjustment is needed, repeat the above steps until the right as well.

为使球头结构能够更好地固定,球头8与球形垫5相互接触的一面打毛,确保球头结构使长固定杆1、短固定杆9固定在合适的位置上。 The ball head structure is able to better fixed, the spherical ball 8 and the pad 5 are in contact with one surface roughened, to ensure that the ball head structure of the long fixing rod 1, the short rod 9 is secured in a fixed position.

长固定杆1、短固定杆9上的联接套6(也有一定的锁紧、松动球头结构的功能)、偏心销4可根据术后恢复,先松动一个,如在手术后的3~4周,先松动短固定杆9上的联接套6、偏心销4,适当放松一点,再恢复一段时间后,则松动长固定杆1上的联接套6、偏心销4,适当放松一点,也可二者同时略作适当放松。 A fixed rod length, short coupling sleeve 9 is fixed on the rod 6 (there is a certain locking, loose ball head structure function), the eccentric pin 4 can be restored according to postoperative loosening of a first, as after surgery 3-4 weeks, before loosening short fixation rod coupling sleeve on 96, the eccentric pin 4, suitably relax a little, and then after a period of recovery, the loosening length fixation rod coupling sleeve on 16, the eccentric pin 4, to relax properly it may also be both at the same time be relaxed slightly.

Claims (6)

1.桡骨远端骨折外固定器,有长固定杆、短固定杆,长固定杆与短固定杆之间通过球头结构连接,长固定杆、短固定杆上分别设置固定块,球头结构的联接套与长固定杆一端连接,球头设置在联接套内,球头一端连接球头杆,球头杆另一端连接另一球头,该另一球头设置在另一联接套内,该联接套连接在短固定杆上,其特征在于在长固定杆、短固定杆与联接套之间内分别设置球形垫,球头与球形垫的球形面接触连接,在长固定杆、短固定杆上分别设置偏心销,偏心销插入长固定杆、短固定杆内的部分上有槽口,与球形垫后部接触连接,该槽口长度大于球形垫后部接触面长度。 1. distal radius fractures fixators, there is fixed a long rod, the rod is fixed between the short, fixed length rod fixed rod connected by short ball structure, the fixing rod length, short fixing block stationary rod are provided, the ball head structure the coupling sleeve is connected to the long end of the fixing rod, ball coupling sleeve is provided, connected at one end ball ball stud, the ball stud and the other end connected to the other ball, the other ball head provided at the other coupling sleeve, the coupling sleeve is connected to a short stationary rod, characterized in that the pad is provided within the spherical fixing bar between the long and short respectively fixed rod and coupling sleeve, the spherical ball and the spherical surface contact pad is connected to the fixed rod length, short fixed rods are provided eccentric pin, the eccentric pin inserted into the long fixing bar, the fixing portion of the inner rod has a short notch, a rear pad in contact with the spherical connection, the slot length is greater than the length of the contact surface of the spherical rear pad.
2.根据权利要求1所述的桡骨远端骨折外固定器,其特征在于在长固定杆、短固定杆内部是中空的,其内设置长螺杆、短螺杆,两个滑块分别螺纹连接在长螺杆、短螺杆上,此两个滑块分别与长固定杆、短固定杆外上部的固定块接触连接。 The distal radial fracture of the external fixator 1, characterized in that the fixed length of the rod, the internal short fixed rod is hollow, the inner length of the screw is provided as claimed in claim short axis, the two sliders are screwed screw length, the short axis, the two sliders respectively fixed rod length, short block fixation rod upper portion of the outer contact connection.
3.根据权利要求1或2所述的桡骨远端骨折外固定器,其特征在于固定块在长固定杆、短固定杆上部平面上是可转动的。 The distal radial fracture or external fixator 12, wherein the fixing block fixing bars in length, the short lever portion fixing plane is rotatable claim.
4.根据权利要求2所述的桡骨远端骨折外固定器,其特征在于滑块在长螺杆、短螺杆上的左、右滑动是微动,以毫米级。 The distal radius according to claim 2, wherein said external fracture fixator, characterized in that the length of the screw in the left slider, the short axis, is right sliding fretting to millimeters.
5.根据权利要求1所述的桡骨远端骨折外固定器,其特征在于固定块与长固定杆、短固定杆接触的一面上设有螺纹针固定槽。 The distal radial fracture of the external fixator 1, characterized in that the threaded pin is provided on one side of the fixing groove in contact with the fixed block length of the fixing rod, the fixing rod as claimed in claim short.
6.根据权利要求5所述的桡骨远端骨折外固定器,其特征在于固定块上设置二个以上螺纹针固定槽。 According to claim 5, wherein the distal radial fracture external fixator, characterized in that two or more threaded pins arranged on the fixing block fixing groove.
CN 200310106381 2003-11-21 2003-11-21 External fixer for radius distal fracture CN1255081C (en)

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CN 200310106381 CN1255081C (en) 2003-11-21 2003-11-21 External fixer for radius distal fracture

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CN 200310106381 CN1255081C (en) 2003-11-21 2003-11-21 External fixer for radius distal fracture

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Publication number Priority date Publication date Assignee Title
SE530328C2 (en) 2006-09-21 2008-05-06 Henrik Hansson Device for fixation of a bone fracture
CN100539960C (en) 2007-08-16 2009-09-16 王纪亮 Universal type radius far end external fixator
CN103479416B (en) * 2013-10-16 2015-08-26 张韦 Bionic unilateral external fixation bracket for human body

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