CN204337030U - A kind of Combined bone screw - Google Patents
A kind of Combined bone screw Download PDFInfo
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- CN204337030U CN204337030U CN201420828308.0U CN201420828308U CN204337030U CN 204337030 U CN204337030 U CN 204337030U CN 201420828308 U CN201420828308 U CN 201420828308U CN 204337030 U CN204337030 U CN 204337030U
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- connecting rod
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- bone screw
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Abstract
一种组合式骨螺钉，涉及骨折手术用医疗器械，包括内连杆和外套体，内连杆上端设有钉帽，外套体外侧设有外螺纹，内连杆下部直径大于上部直径，内连杆下部周向均匀分布六个连接孔，外套体上与连接孔相对处设有固定孔，连接孔与固定孔内设有连接销。使用本实用新型将骨折处的骨块用骨折板固定后，由于内连杆下部直径大于上部直径，内连杆上部与外套体间具有活动间隙，骨折块在接触面的纵向上具有微小的活动间隙，满足骨折块间愈合时所需的小范围相对运动产生的刺激作用，骨折愈合速度快、愈合效果好。
A combined bone screw, which relates to a medical instrument for fracture surgery, includes an inner connecting rod and an outer body. The upper end of the inner connecting rod is provided with a nail cap, and the outside of the outer body is provided with external threads. Six connecting holes are evenly distributed in the circumferential direction of the lower part of the rod, and a fixing hole is arranged on the outer body opposite to the connecting holes, and connecting pins are arranged in the connecting holes and the fixing holes. After using the utility model to fix the bone fragment at the fracture site with a fracture plate, since the diameter of the lower part of the inner connecting rod is larger than the diameter of the upper part, there is a movable gap between the upper part of the inner connecting rod and the outer body, and the fracture fragment has a slight movement in the longitudinal direction of the contact surface. The gap can meet the stimulating effect of the small range of relative movement required for the healing of the fracture fragments, and the fracture healing speed is fast and the healing effect is good.
Description
技术领域 technical field
本发明涉及骨折手术用医疗器械，详细的说是一种具有一定的可动性，骨愈合速度快、效果好的组合式骨螺钉。 The invention relates to a medical instrument for fracture operation, in particular a combined bone screw with certain mobility, fast bone healing speed and good effect.
背景技术 Background technique
我们知道，在骨折手术中，常用的手段是使用接骨板和接骨螺钉对骨折部位实施固定，接骨螺钉将接骨板与断裂的两段骨骼进行固定、连接，经过一段时间的恢复愈合后，断裂处的骨骼生长、愈合。医学研究表明，骨折处的骨块间愈合状况与两骨块间的活动间隙有直接关系，骨块间小范围的相对运动会对骨折面间的愈合起到积极的刺激作用，当骨折处的骨块间纵向具有0.2-1毫米的活动间隙时，骨折愈合速度最快，愈合效果最佳。现有的骨折板和接骨螺钉对骨折处骨骼的固定较为牢固，骨折块件的骨折端面的相对运动依靠骨折钢板的形变来实现，满足不了上述要求，导致骨折处的愈合速度慢、效果差。 We know that in fracture surgery, the common method is to use bone plate and bone screw to fix the fracture site. The bone screw fixes and connects the bone plate with the two broken bones. After a period of recovery and healing, the fracture bone growth and healing. Medical research shows that the healing status of the bone fragments at the fracture site is directly related to the movement gap between the two bone fragments, and the small-scale relative movement between the bone fragments will actively stimulate the healing of the fracture surface. When there is an active gap of 0.2-1mm in the longitudinal direction between the blocks, the fracture healing speed is the fastest and the healing effect is the best. The existing fracture plates and bone screws fix the bone at the fracture relatively firmly, and the relative movement of the fracture end surfaces of the fracture fragments is realized by the deformation of the fracture plate, which cannot meet the above requirements, resulting in slow healing of the fracture and poor effect.
发明内容 Contents of the invention
本发明的目的是解决上述现有技术的不足，提供一种骨折处的骨折端面可以相对微动，骨愈合速度快、效果好的组合式骨螺钉。 The purpose of the present invention is to solve the above-mentioned shortcomings of the prior art, and to provide a combined bone screw with a relatively fine movement of the fracture end surface at the fracture site, fast bone healing speed and good effect.
本发明的另一目的是提供一种连接稳固、性能可靠，使用过程中内连杆和外套体不分离的组合式骨螺钉。 Another object of the present invention is to provide a combined bone screw with stable connection and reliable performance, and the inner connecting rod and the outer body will not be separated during use.
本发明解决上述技术问题所采用的技术方案是： The technical solution adopted by the present invention to solve the problems of the technologies described above is:
一种组合式骨螺钉，其特征在于包括内连杆和外套体，内连杆上端设有钉帽，外套体外侧设有外螺纹，内连杆下部直径大于上部直径，内连杆下部周向均匀分布六个连接孔，外套体上与连接孔相对处设有固定孔，连接孔与固定孔内设有连接销。 A combined bone screw is characterized in that it includes an inner connecting rod and an outer body, the upper end of the inner connecting rod is provided with a nail cap, the outer side of the outer body is provided with external threads, the diameter of the lower part of the inner connecting rod is greater than that of the upper part, and the lower part of the inner connecting rod is circumferentially Six connecting holes are evenly distributed, fixing holes are arranged on the outer body opposite to the connecting holes, and connecting pins are arranged in the connecting holes and the fixing holes.
本发明中所述的内连杆下部呈螺旋状、周向720度内均布有六个的连接孔。 The lower part of the inner connecting rod described in the present invention is in a spiral shape, and six connecting holes are uniformly distributed in a circumferential direction of 720 degrees.
本发明中所述的外套筒下端设有自攻螺钉头。 The lower end of the outer sleeve described in the present invention is provided with a self-tapping screw head.
本发明中所述的钉帽上设有梅花形槽孔。 The nail cap described in the present invention is provided with a quincunx-shaped slot.
本发明中所述连接销为内六角螺栓，连接孔和固定孔为螺纹孔。 In the present invention, the connecting pin is a hexagon socket bolt, and the connecting hole and the fixing hole are threaded holes.
使用本发明将骨折处的骨块用骨折板固定后，由于内连杆下部直径大于上部直径，内连杆上部与外套体间具有活动间隙，骨折块在接触面的（垂直）纵向上具有微小的活动间隙，满足骨折块间愈合时所需的小范围相对运动产生的刺激作用，骨折愈合速度快、愈合效果好。 After using the present invention to fix the bone fragment at the fracture site with a fracture plate, since the diameter of the lower part of the inner connecting rod is larger than the diameter of the upper part, there is a movable gap between the upper part of the inner connecting rod and the outer body, and the fracture fragment has a small (vertical) longitudinal direction on the contact surface. The activity gap can meet the stimulating effect of the small-scale relative movement required for the healing of the fracture fragments, and the fracture healing speed is fast and the healing effect is good.
附图说明 Description of drawings
图1是本发明的结构示意图。 Fig. 1 is a schematic structural view of the present invention.
图2是本发明中内连杆的结构示意图。 Fig. 2 is a structural schematic diagram of the inner connecting rod in the present invention.
图3是本发明中外套体的结构示意图。 Fig. 3 is a schematic structural view of the outer body in the present invention.
图4是本发明中外套体的立体结构示意图。 Fig. 4 is a schematic diagram of the three-dimensional structure of the outer casing in the present invention.
具体实施方式 Detailed ways
如图所示的组合式骨螺钉，包括内连杆3和外套体2，内连杆3上端设有钉帽1，钉帽上设有梅花形槽孔。外套体2外侧设有外螺纹，内连杆3下部直径与外套体2的内径相同，内连杆上部直径小于下部直径，内连杆下部插入外套体内后，内连杆的中轴线与外套体的中轴线重合，内连杆上部的外周距外套体内侧壁的距离相等，内连杆受力后，其上部在外套体内的任何方向的活动距离及形变量相同。避免出现内连杆一侧距离外套体内侧壁过近、甚至贴靠，使骨块的活动受限，影响愈合速度及愈合效果。内连杆下部周向均匀分布六个连接孔5，外套体上与连接孔5相对处设有固定孔6，连接孔5与固定孔6内设有连接销4，连接销4为内六角螺栓，连接孔为螺纹孔。优选的方案是：内连杆下部呈螺旋柱、周向720度内均布有六个的连接孔，即六个连接孔在连接杆下部的一条720度的螺旋线上均匀分布。使内连杆和外套体固定更牢固，手术过程中不会因为扭力过大而断裂分离。外套筒下端设有自攻螺钉头，更利于手术时植入骨骼内。 The combined bone screw as shown in the figure includes an inner connecting rod 3 and an outer casing 2. The upper end of the inner connecting rod 3 is provided with a nail cap 1, and the nail cap is provided with a quincunx-shaped slot. The outside of the outer casing 2 is provided with external threads, the diameter of the lower part of the inner connecting rod 3 is the same as the inner diameter of the outer casing 2, and the diameter of the upper part of the inner connecting rod is smaller than the diameter of the lower part. The central axis coincides, the outer circumference of the upper part of the inner connecting rod is equal to the distance from the inner wall of the outer casing, and after the inner connecting rod is stressed, the movable distance and deformation amount of the upper part in any direction in the outer casing are the same. Avoid the occurrence that one side of the inner connecting rod is too close to or even close to the inner wall of the outer body, which will restrict the movement of the bone block and affect the healing speed and effect. Six connecting holes 5 are evenly distributed in the circumferential direction of the lower part of the inner connecting rod. A fixing hole 6 is provided on the outer body opposite to the connecting hole 5. A connecting pin 4 is arranged in the connecting hole 5 and the fixing hole 6. The connecting pin 4 is a hexagon socket bolt , the connecting hole is a threaded hole. The preferred solution is: the lower part of the inner connecting rod is a helical column, and six connecting holes are evenly distributed in the circumferential direction of 720 degrees, that is, the six connecting holes are evenly distributed on a 720-degree helical line at the lower part of the connecting rod. The inner connecting rod and the outer body are fixed more firmly, and they will not be broken and separated due to excessive torque during the operation. The lower end of the outer sleeve is provided with a self-tapping screw head, which is more conducive to implanting into the bone during operation.
使用本发明将骨折处的骨块用骨折板固定后，由于内连杆下部直径大于上部直径，内连杆上部与外套体间具有活动间隙，骨折块在接触面的纵向上（即垂直两个骨折块接触面的方向上）具有微小的活动间隙，满足了骨折块间愈合时所需的小范围相对运动产生的刺激作用，骨折愈合速度快、愈合效果好。 After using the present invention to fix the bone fragment at the fracture site with a fracture plate, because the diameter of the lower part of the inner connecting rod is greater than the diameter of the upper part, there is a movable gap between the upper part of the inner connecting rod and the outer body, and the fracture fragment is in the longitudinal direction of the contact surface (that is, two vertical The direction of the contact surface of the fracture fragments) has a small movable gap, which meets the stimulation effect of the small-scale relative movement required for the healing of the fracture fragments, and the fracture healing speed is fast and the healing effect is good.
Claims (5)
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420828308.0U CN204337030U (en) | 2014-12-24 | 2014-12-24 | A kind of Combined bone screw |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420828308.0U CN204337030U (en) | 2014-12-24 | 2014-12-24 | A kind of Combined bone screw |
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| Publication Number | Publication Date |
|---|---|
| CN204337030U true CN204337030U (en) | 2015-05-20 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201420828308.0U Expired - Lifetime CN204337030U (en) | 2014-12-24 | 2014-12-24 | A kind of Combined bone screw |
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| CN (1) | CN204337030U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104490463A (en) * | 2014-12-24 | 2015-04-08 | 山东威高骨科材料股份有限公司 | Combined type bone screw |
| CN105342685A (en) * | 2015-11-19 | 2016-02-24 | 江苏百易得医疗科技有限公司 | Dynamic locking screw and dynamic locking bone plate system |
-
2014
- 2014-12-24 CN CN201420828308.0U patent/CN204337030U/en not_active Expired - Lifetime
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104490463A (en) * | 2014-12-24 | 2015-04-08 | 山东威高骨科材料股份有限公司 | Combined type bone screw |
| CN105342685A (en) * | 2015-11-19 | 2016-02-24 | 江苏百易得医疗科技有限公司 | Dynamic locking screw and dynamic locking bone plate system |
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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: 20150520 |