CN201912206U - Improved jaw fracture external fixer - Google Patents

Abstract

Translated fromChinese

本实用新型提供一种改进型颌骨骨折外固定器，属于医疗器械技术领域，其结构是固定骨钉架与导轨固定连接，固定骨钉架上开设有骨钉螺孔，移动骨钉架的下部设置有螺孔座，螺孔座上开设有调节螺孔，调节螺孔的孔径方向与骨钉螺孔的孔径方向相垂直；导轨上开设有轨槽，一螺杆通过导轨两端的嵌套设置在轨槽内，导轨两端的嵌套之间的螺杆上设置有外螺纹，移动骨钉架的螺孔座设置在导轨的轨槽内且螺孔座的调节螺孔与轨槽内的螺杆螺纹连接；尤其移动骨钉架的一侧开设有阶梯半月槽。本实用新型的阶梯半月槽是为了直接卡住所使用的不同型号的骨钉，便于快速牵引。

The utility model provides an improved jaw fracture external fixator, which belongs to the technical field of medical devices. The structure is that a fixed bone nail frame is fixedly connected with a guide rail, and a bone screw screw hole is opened on the fixed bone nail frame, and the lower part of the bone nail frame is moved. A screw hole seat is provided, and an adjustment screw hole is provided on the screw hole seat, and the aperture direction of the adjustment screw hole is perpendicular to the aperture direction of the screw hole of the bone screw; a rail groove is provided on the guide rail, and a screw rod is set on the rail through the nesting at both ends of the guide rail. In the groove, the screw rod between the nests at both ends of the guide rail is provided with external threads, the screw hole seat of the mobile bone nail frame is arranged in the rail groove of the guide rail and the adjusting screw hole of the screw hole seat is threadedly connected with the screw rod in the rail groove; In particular, a stepped half-moon groove is provided on one side of the mobile bone nail frame. The stepped half-moon groove of the utility model is to directly block the used bone nails of different types, so as to facilitate rapid traction.

Description

Translated fromChinese

改进型颌骨骨折外固定器Improved External Fixator for Jaw Fracture

技术领域technical field

本实用新型涉及医疗器械技术领域，具体地说是一种改进型颌骨骨折外固定器。The utility model relates to the technical field of medical instruments, in particular to an improved external fixator for jaw fractures.

背景技术Background technique

一般的，口腔颌面部创伤约占全身创伤的10％～20％，因交通事故或其他事故造成的人体骨骼的创伤普遍存在，其中人体颌面骨骨折的患者呈上升趋势，临床上颌骨骨折的治疗通常采用切开复位内固定术，主要表现在先将骨骼外围组织切开然后采用骨钉或其他装置在骨组织内进行内固定来治疗颌面骨骨折，该术可能出现以下并发症：创伤面感染、颌骨内异物存留、人体对异物的排斥反应、尤其是针对儿童实施内固定术则会影响以后儿童颌骨的发育等。Generally, oral and maxillofacial trauma accounts for about 10% to 20% of systemic trauma, and human bone trauma caused by traffic accidents or other accidents is common. The treatment of open reduction and internal fixation usually adopts open reduction and internal fixation, which is mainly performed by cutting the peripheral bone tissue first and then using bone nails or other devices to internally fix the bone tissue to treat maxillofacial bone fractures. The following complications may occur in this operation: Trauma infection, retention of foreign bodies in the jaws, human body's rejection of foreign bodies, especially internal fixation for children will affect the development of the children's jaws in the future.

但是临床上内固定术应用比较广泛，这不但对患者产生负面的心理作用，而且有时在骨折情况康复后需要再次对患者进行创伤来取出内固定物，这在一定程度上给患者造成了二次创伤，无论对医护人员还是患者本身都带来了难以克服的困难。However, internal fixation is widely used clinically, which not only has a negative psychological effect on patients, but also sometimes requires trauma to the patient again to remove the internal fixation after the fracture has recovered, which to a certain extent has caused secondary trauma to the patient. Trauma brings insurmountable difficulties to both medical staff and patients themselves.

发明内容Contents of the invention

本实用新型的技术任务是解决现有技术的不足，提供一种改进型颌骨骨折外固定器。The technical task of the utility model is to solve the deficiencies of the prior art and provide an improved external fixator for jaw fractures.

本实用新型的技术方案是按以下方式实现的，该改进型颌骨骨折外固定器，包括导轨、固定骨钉架和移动骨钉架，固定骨钉架与导轨固定连接，固定骨钉架上开设有骨钉螺孔，移动骨钉架的下部设置有螺孔座，螺孔座上开设有调节螺孔，调节螺孔的孔径方向与骨钉螺孔的孔径方向相垂直；导轨上开设有轨槽，一螺杆通过导轨两端的嵌套设置在轨槽内，导轨两端的嵌套之间的螺杆上设置有外螺纹，移动骨钉架的螺孔座设置在导轨的轨槽内且螺孔座的调节螺孔与轨槽内的螺杆螺纹连接；尤其是：移动骨钉架的一侧开设有阶梯半月槽。The technical scheme of the utility model is realized in the following manner. The improved external fixator for jaw fractures includes a guide rail, a fixed bone nail frame and a movable bone nail frame. The fixed bone nail frame is fixedly connected with the guide rail, and the fixed bone nail frame There are bone screw screw holes, the lower part of the mobile bone nail frame is provided with a screw hole seat, and an adjustment screw hole is opened on the screw hole seat, the aperture direction of the adjustment screw hole is perpendicular to the aperture direction of the bone screw screw hole; rail grooves are provided on the guide rail , a screw is set in the rail groove through the nesting at both ends of the guide rail, the screw between the nesting at both ends of the guide rail is provided with external threads, the screw hole seat of the mobile bone nail frame is set in the rail groove of the guide rail and the screw hole seat The adjusting screw hole is threadedly connected with the screw rod in the rail groove; especially: a stepped half-moon groove is opened on one side of the mobile bone nail frame.

移动骨钉架的下部的螺孔座和移动骨钉架是一体的整体结构。The screw hole seat at the bottom of the mobile bone nail frame and the mobile bone nail frame are an integral structure.

螺杆的一个端面设置有十字型刀口凹槽。One end face of the screw rod is provided with a cross-shaped knife-edge groove.

轨槽形状与螺孔座的形状相同。The shape of the track groove is the same as that of the screw hole seat.

本实用新型与现有技术相比所产生的有益效果是：Compared with the prior art, the utility model has the following beneficial effects:

该改进型颌骨骨折外固定器尤其在移动骨钉架的一侧开设有阶梯半月槽，是为了直接卡住所使用的不同型号的骨钉，便于快速牵引。In particular, the improved external fixator for jaw fracture is provided with stepped half-moon grooves on one side of the movable bone nail frame, in order to directly block the bone nails of different types used and facilitate rapid traction.

该改进型颌骨骨折外固定器利用螺杆的旋转来使移动骨钉架相对于固定骨钉架产生相对运动，从而实现对骨钉的牵引动作，牵引通过螺纹旋转进行调节动作缓慢，牵引力输出稳定，固定效果好。该改进型颌骨骨折外固定器治疗颌面部骨折完全克服临床上会出现并发症的缺点，是一种真正意义上的微创手术，颌面部几乎没有疤痕，患者易于接受，是对骨折内固定治疗的补充和拓展。该改进型颌骨骨折外固定器不用金属内固定，仅仅采用双皮质骨钉对骨骼进行固定，手术方法简便，能够保证骨折愈合并防止并发症，并避免了二次手术创伤的情况发生，效果良好，尤其针对于不能耐受或不宜接受内固定手术的病人更宜采用。The improved external fixator for jaw fracture uses the rotation of the screw to make the mobile nail frame move relative to the fixed bone nail frame, so as to realize the traction action on the bone nail. The traction is adjusted slowly through thread rotation, and the traction force output is stable. , the fixation effect is good. The improved jaw fracture external fixator for maxillofacial fractures completely overcomes the shortcomings of clinical complications. Supplement and expansion of internal fixation therapy. The improved external fixator for jaw fracture does not use metal internal fixation, but only uses bicortical bone nails to fix the bone. The operation method is simple, it can ensure fracture healing and prevent complications, and avoid the occurrence of secondary surgical trauma. The effect is Good, especially for patients who cannot tolerate or are not suitable for internal fixation.

附图说明Description of drawings

附图1是本实用新型的主视结构示意图；Accompanyingdrawing 1 is the main view structural representation of the utility model;

附图2是附图1中A-A的剖面结构示意图；Accompanyingdrawing 2 is the sectional structural representation of A-A in accompanyingdrawing 1;

附图3是本实用新型的导轨的剖面示意图；Accompanyingdrawing 3 is the sectional schematic view of guide rail of the present utility model;

附图4是本实用新型的移动骨钉架的剖面示意图；Accompanying drawing 4 is the sectional schematic diagram of the movable bone nail frame of the present utility model;

附图5是本实用新型的螺杆端面十字型刀口凹槽的结构示意图；Accompanyingdrawing 5 is the structural representation of the cross-shaped knife-edge groove on the end face of the screw of the utility model;

附图6是本实用新型的后视结构示意图。Accompanying drawing 6 is the rear view structure diagram of the utility model.

附图中的标记分别表示：The marks in the accompanying drawings indicate respectively:

1、导轨，2、固定骨钉架，3、移动骨钉架，4、骨钉螺孔，5、螺孔座，6、调节螺孔，7、轨槽，8、螺杆，9、嵌套，10、外螺纹，11、阶梯半月槽，12、十字型刀口凹槽。1. Guide rail, 2. Fixed bone screw frame, 3. Mobile bone screw frame, 4. Bone screw screw hole, 5. Screw hole seat, 6. Adjusting screw hole, 7. Rail groove, 8. Screw rod, 9. Nesting, 10. External thread, 11. Step half-moon groove, 12. Cross-shaped knife-edge groove.

具体实施方式Detailed ways

下面结合附图对本实用新型的改进型颌骨骨折外固定器作以下详细说明。The improved jaw fracture external fixator of the present utility model will be described in detail below in conjunction with the accompanying drawings.

如附图1所示，本实用新型的改进型颌骨骨折外固定器，其结构包括导轨1、固定骨钉架2和移动骨钉架3，固定骨钉架2与导轨1固定连接，固定骨钉架2上开设有骨钉螺孔4，移动骨钉架3的一侧开设有阶梯半月槽11。移动骨钉架3的下部设置有螺孔座5，移动骨钉架3的下部的螺孔座5和移动骨钉架是一体的整体结构。螺孔座5上开设有调节螺孔6，调节螺孔6的孔径方向与骨钉螺孔4的孔径方向相垂直；导轨1上开设有轨槽7，一螺杆8通过导轨两端的嵌套9设置在轨槽7内，轨槽7形状与螺孔座5的形状相同，导轨两端的嵌套之间的螺杆8上设置有外螺纹10，移动骨钉架3的螺孔座5设置在导轨的轨槽7内且螺孔座的调节螺孔4与轨槽内的螺杆8螺纹连接。螺杆8的一个端面设置有十字型刀口凹槽12。As shown in accompanyingdrawing 1, the modified jaw fracture external fixator of the present utility model, its structure comprisesguide rail 1, fixedbone nail frame 2 and mobilebone nail frame 3, fixedbone nail frame 2 is fixedly connected withguide rail 1, fixes Thebone nail frame 2 is provided with a bonescrew screw hole 4 , and one side of the mobilebone nail frame 3 is provided with a stepped half-moon groove 11 . The bottom of the mobilebone nail frame 3 is provided with ascrew hole seat 5, and thescrew hole seat 5 and the mobile bone nail frame are an integral structure. Thescrew hole seat 5 is provided with an adjustment screw hole 6, and the aperture direction of the adjustment screw hole 6 is perpendicular to the aperture direction of the bonescrew screw hole 4; arail groove 7 is provided on theguide rail 1, and a screw rod 8 is set through the nest 9 at both ends of the guide rail. In thetrack groove 7, the shape of thetrack groove 7 is the same as that of thescrew hole seat 5, and the screw rod 8 between the nests at both ends of the guide rail is provided with an external thread 10, and thescrew hole seat 5 of the mobilebone nail frame 3 is arranged on the guide rail. In therail groove 7 and the adjustingscrew hole 4 of the screw hole seat is threadedly connected with the screw rod 8 in the rail groove. One end surface of the screw rod 8 is provided with a cross-shaped knife-edge groove 12 .

Claims (4)

1. modified model jaw fracture external fixator, comprise guide rail, fixing bone pin frame and mobile nail frame, one fixing bone pin frame is fixedlyed connected with guide rail, offer the nail screw on the fixing bone pin frame, the bottom of mobile nail frame is provided with the screw seat, offer the adjusting screw on the screw seat, the aperture direction of adjusting screw and the aperture direction of nail screw are perpendicular; Offer rail groove on the guide rail, one screw rod is arranged in the rail groove by the nested of guide rail two ends, screw rod between guide rail two ends nested is provided with external screw thread, and the screw flight that the screw seat of mobile nail frame is arranged in the rail groove of guide rail and the adjusting screw of screw seat and rail groove are interior is connected; It is characterized in that: a side of mobile nail frame offers the ladder half-moon groove.

2. modified model jaw fracture external fixator according to claim 1 is characterized in that the screw seat and the mobile nail frame of the bottom of mobile nail frame is the unitary whole structure.

3. modified model jaw fracture external fixator according to claim 1 is characterized in that an end face of screw rod is provided with cross edge of a knife groove.

4. modified model jaw fracture external fixator according to claim 1 is characterized in that the rail groove shape is identical with the shape of screw seat.

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