CN107468324A - A kind of near end of thighbone insertion type strengthens Medullary fixation device - Google Patents
A kind of near end of thighbone insertion type strengthens Medullary fixation device Download PDFInfo
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- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
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- A61B17/00—Surgical instruments, devices or methods
- A61B17/56—Surgical instruments or methods for treatment of bones or joints; Devices specially adapted therefor
- A61B17/58—Surgical instruments or methods for treatment of bones or joints; Devices specially adapted therefor for osteosynthesis, e.g. bone plates, screws or setting implements
- A61B17/68—Internal fixation devices, including fasteners and spinal fixators, even if a part thereof projects from the skin
- A61B17/72—Intramedullary devices, e.g. pins or nails
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- A61B17/00—Surgical instruments, devices or methods
- A61B17/56—Surgical instruments or methods for treatment of bones or joints; Devices specially adapted therefor
- A61B17/58—Surgical instruments or methods for treatment of bones or joints; Devices specially adapted therefor for osteosynthesis, e.g. bone plates, screws or setting implements
- A61B17/68—Internal fixation devices, including fasteners and spinal fixators, even if a part thereof projects from the skin
- A61B17/72—Intramedullary devices, e.g. pins or nails
- A61B17/7233—Intramedullary devices, e.g. pins or nails with special means of locking the nail to the bone
- A61B17/725—Intramedullary devices, e.g. pins or nails with special means of locking the nail to the bone with locking pins or screws of special form
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- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61B—DIAGNOSIS; SURGERY; IDENTIFICATION
- A61B17/00—Surgical instruments, devices or methods
- A61B17/56—Surgical instruments or methods for treatment of bones or joints; Devices specially adapted therefor
- A61B17/58—Surgical instruments or methods for treatment of bones or joints; Devices specially adapted therefor for osteosynthesis, e.g. bone plates, screws or setting implements
- A61B17/68—Internal fixation devices, including fasteners and spinal fixators, even if a part thereof projects from the skin
- A61B17/74—Devices for the head or neck or trochanter of the femur
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- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
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- A61B17/00—Surgical instruments, devices or methods
- A61B17/56—Surgical instruments or methods for treatment of bones or joints; Devices specially adapted therefor
- A61B17/58—Surgical instruments or methods for treatment of bones or joints; Devices specially adapted therefor for osteosynthesis, e.g. bone plates, screws or setting implements
- A61B17/68—Internal fixation devices, including fasteners and spinal fixators, even if a part thereof projects from the skin
- A61B17/84—Fasteners therefor or fasteners being internal fixation devices
- A61B17/86—Pins or screws or threaded wires; nuts therefor
- A61B17/8625—Shanks, i.e. parts contacting bone tissue
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- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
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- A61B17/00—Surgical instruments, devices or methods
- A61B17/56—Surgical instruments or methods for treatment of bones or joints; Devices specially adapted therefor
- A61B17/58—Surgical instruments or methods for treatment of bones or joints; Devices specially adapted therefor for osteosynthesis, e.g. bone plates, screws or setting implements
- A61B17/68—Internal fixation devices, including fasteners and spinal fixators, even if a part thereof projects from the skin
- A61B17/84—Fasteners therefor or fasteners being internal fixation devices
- A61B17/86—Pins or screws or threaded wires; nuts therefor
- A61B17/8685—Pins or screws or threaded wires; nuts therefor comprising multiple separate parts
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- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61B—DIAGNOSIS; SURGERY; IDENTIFICATION
- A61B17/00—Surgical instruments, devices or methods
- A61B17/56—Surgical instruments or methods for treatment of bones or joints; Devices specially adapted therefor
- A61B2017/564—Methods for bone or joint treatment
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- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61B—DIAGNOSIS; SURGERY; IDENTIFICATION
- A61B17/00—Surgical instruments, devices or methods
- A61B17/56—Surgical instruments or methods for treatment of bones or joints; Devices specially adapted therefor
- A61B17/58—Surgical instruments or methods for treatment of bones or joints; Devices specially adapted therefor for osteosynthesis, e.g. bone plates, screws or setting implements
- A61B17/68—Internal fixation devices, including fasteners and spinal fixators, even if a part thereof projects from the skin
- A61B17/84—Fasteners therefor or fasteners being internal fixation devices
- A61B17/86—Pins or screws or threaded wires; nuts therefor
- A61B2017/8655—Pins or screws or threaded wires; nuts therefor with special features for locking in the bone
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Abstract
本发明涉及医疗器械领域，尤其涉及一种股骨近端嵌插式加强髓内固定装置。其技术方案为：一种股骨近端嵌插式加强髓内固定装置，包括髓内钉，髓内钉的头部分别设置有第一股骨钉孔和第二股骨钉孔，第一股骨钉孔内安装有第一股骨钉，第一股骨钉和髓内钉之间连接有用于固定第一股骨钉的固定件，第二股骨钉孔内安装有第二股骨钉，第二股骨钉和髓内钉之间连接有用于固定第二股骨钉的第二固定件；第二股骨钉的一端设置有第二股骨钉头部安装槽，第一股骨钉的一端卡合在第二股骨钉头部安装槽内。本发明提供了一种防止退钉的股骨近端嵌插式加强髓内固定装置，解决了现有的髓内固定装置出现退钉问题。
The invention relates to the field of medical devices, in particular to an intercalated and inserted reinforced intramedullary fixation device for the proximal end of the femur. The technical solution is: a proximal femur intercalated reinforced intramedullary fixation device, including an intramedullary nail, the head of the intramedullary nail is respectively provided with a first femoral nail hole and a second femoral nail hole, the first femoral nail hole The first femoral nail is installed inside, and the fixer for fixing the first femoral nail is connected between the first femoral nail and the intramedullary nail, and the second femoral nail is installed in the second femoral nail hole, and the second femoral nail and the intramedullary nail A second fixer for fixing the second femoral nail is connected between the nails; one end of the second femoral nail is provided with a second femoral nail head mounting groove, and one end of the first femoral nail is engaged with the second femoral nail head for installation in the slot. The invention provides a femoral proximal femoral proximal intercalated and reinforced intramedullary fixation device capable of preventing screw withdrawal, which solves the problem of nail withdrawal in the existing intramedullary fixation device.
Description
技术领域technical field
本发明涉及医疗器械领域，尤其涉及一种股骨近端嵌插式加强髓内固定装置。The invention relates to the field of medical instruments, in particular to an intercalated and inserted reinforced intramedullary fixation device for the proximal end of the femur.
背景技术Background technique
股骨转子间骨折又称股骨粗隆间骨折，常常发生于老年人，是临床最常见的髋部骨折之一,国内统计约占髋部骨折的35.7％。随着人口老龄化加剧，老年人口增多，且老年人常合并骨质疏松，在外力作用下较年轻人易发生骨折，髋部骨折的发生率不断增高,因老年人反应能力下降、髋部肌肉保护性差，轻微的损伤即可发生髋部骨折。相关文献报道股骨转子间骨折占髋部骨折比例甚至可达50％。手术治疗为目前公认的首选治疗方式。Intertrochanteric fracture, also known as intertrochanteric fracture, often occurs in the elderly and is one of the most common hip fractures in clinical practice, accounting for about 35.7% of hip fractures in domestic statistics. With the intensification of population aging, the number of elderly people increases, and the elderly are often combined with osteoporosis. Under the action of external force, they are more likely to fracture than young people, and the incidence of hip fractures continues to increase. Poor protection, hip fractures can occur with minor injuries. Related literature reports that intertrochanteric fractures account for up to 50% of hip fractures. Surgical treatment is currently recognized as the preferred treatment.
专利申请号为CN201620739110.4的实用新型专利公布了一种股骨近端髓内固定装置，包括髓内主钉、近端锁钉、皮质骨螺钉、压紧锁钉和尾帽，髓内主钉具有近端和带有尖端的远端，近端延伸至远端，并呈角度设置；近端具有与近端锁钉配合的第一通孔，第一通孔轴线与近端呈角度设置，远端具有与皮质骨螺钉配合的第二通孔；髓内主钉上端具有螺纹孔，螺纹孔从上至下设置有尾帽和压紧锁钉，压紧锁钉下端压紧近端锁钉，尾帽与螺纹孔螺纹连接，并压紧压紧锁钉；近端锁钉前端为刀头，近端锁钉上具有与压紧锁钉下端配合的台阶面，第一通孔上具有应力释放槽，有效防止近端锁钉和第一通孔连接处的断裂。The utility model patent with the patent application number CN201620739110.4 discloses a proximal femoral intramedullary fixation device, including intramedullary main nail, proximal locking nail, cortical bone screw, compression locking nail and tail cap, intramedullary main nail It has a proximal end and a distal end with a tip, the proximal end extends to the distal end, and is arranged at an angle; the proximal end has a first through hole that cooperates with the proximal locking nail, and the axis of the first through hole is arranged at an angle to the proximal end, The distal end has a second through hole that fits with the cortical bone screw; the upper end of the main intramedullary nail has a threaded hole, and the threaded hole is provided with a tail cap and a compression locking nail from top to bottom, and the lower end of the compression locking screw compresses the proximal locking nail , the tail cap is threadedly connected with the threaded hole, and the compression locking nail is pressed; the front end of the proximal locking nail is a cutter head, and the proximal locking nail has a stepped surface matching the lower end of the compression locking nail, and the first through hole has a stress The release groove effectively prevents the breakage of the connection between the proximal locking nail and the first through hole.
上述固定装置仅在髓内主钉上安装有一个近端锁钉，近端锁钉的连接不可靠，在受到挤压后会出现退钉或折断的情况。因此提供一种有效防止退钉，加强髓内固定的内固定器械，才能保证股骨固定可靠。The above-mentioned fixation device only has a proximal locking nail installed on the intramedullary main nail, and the connection of the proximal locking nail is unreliable, and the nail may withdraw or break after being squeezed. Therefore, only by providing an internal fixation device that effectively prevents screw withdrawal and strengthens intramedullary fixation can reliable femoral fixation be guaranteed.
发明内容Contents of the invention
本发明克服了现有技术的不足，提供一种防止退钉的股骨近端嵌插式加强髓内固定装置，解决了现有的髓内固定装置出现退钉问题。The invention overcomes the disadvantages of the prior art, provides a femoral proximal femoral proximal intercalated and reinforced intramedullary fixation device for preventing screw withdrawal, and solves the problem of screw withdrawal in the existing intramedullary fixation device.
为解决上述的技术问题，本发明采用以下技术方案：In order to solve the above-mentioned technical problems, the present invention adopts the following technical solutions:
一种股骨近端嵌插式加强髓内固定装置，包括髓内钉，髓内钉的头部分别设置有第一股骨钉孔和第二股骨钉孔，第一股骨钉孔内安装有第一股骨钉，第一股骨钉和髓内钉之间连接有用于固定第一股骨钉的固定件，第二股骨钉孔内安装有第二股骨钉，第二股骨钉和髓内钉之间连接有用于固定第二股骨钉的第二固定件；第二股骨钉的一端设置有第二股骨钉头部安装槽，第一股骨钉的一端卡合在第二股骨钉头部安装槽内。A proximal femur intercalation-type reinforced intramedullary fixation device includes an intramedullary nail, the head of the intramedullary nail is respectively provided with a first femoral nail hole and a second femoral nail hole, and a first femoral nail hole is installed in the first femoral nail hole. Femoral nail, the first femoral nail and the intramedullary nail are connected with a fixer for fixing the first femoral nail, the second femoral nail is installed in the hole of the second femoral nail, and the connection between the second femoral nail and the intramedullary nail is useful The second fixing part is used to fix the second femoral nail; one end of the second femoral nail is provided with a second femoral nail head installation groove, and one end of the first femoral nail is engaged in the second femoral nail head installation groove.
作为本发明的优选方案，所述髓内钉内设置有第一封口螺纹孔，第一封口螺纹孔与第一股骨钉孔贯通，第一股骨钉上设置有若干第一股骨钉安装槽；第一固定件第一封口钉，第一封口钉安装于第一封口螺纹孔内，第一封口钉的一端穿过第一封口螺纹孔后连接于其中一个第一股骨钉安装槽内。As a preferred solution of the present invention, the intramedullary nail is provided with a first sealing threaded hole, the first sealing threaded hole communicates with the first femoral nail hole, and a plurality of first femoral nail installation grooves are arranged on the first femoral nail; A fixing member with a first sealing nail, the first sealing nail is installed in the first sealing threaded hole, and one end of the first sealing nail passes through the first sealing threaded hole and is connected to one of the first femoral nail installation grooves.
作为本发明的优选方案，所述髓内钉内设置有第二封口螺纹孔，第二封口螺纹孔的两端分别与第一股骨钉孔和第二股骨钉孔贯通，第二股骨钉上设置有若干第二股骨钉安装槽；第二固定件第二封口钉，第二封口钉安装于第二封口螺纹孔内，第二封口钉的一端穿过第二封口螺纹孔后连接于其中一个第二股骨钉安装槽内。As a preferred solution of the present invention, the intramedullary nail is provided with a second sealing threaded hole, and the two ends of the second sealing threaded hole are connected with the first femoral nail hole and the second femoral nail hole respectively, and the second femoral nail is provided with There are a number of second femoral nail installation grooves; the second fixing part is the second sealing nail, the second sealing nail is installed in the second sealing threaded hole, and one end of the second sealing nail passes through the second sealing threaded hole and is connected to one of the second sealing screws. Two femoral nails are installed in the groove.
作为本发明的优选方案，所述第一股骨钉靠近第二股骨钉头部安装槽的一端设置有第一股骨钉螺纹，第一股骨钉远离第一股骨钉螺纹的一端设置有第一股骨钉内孔。As a preferred solution of the present invention, the first femoral nail is provided with a first femoral nail thread near one end of the second femoral nail head mounting groove, and the first femoral nail is provided with an end of the first femoral nail away from the first femoral nail thread. Bore.
作为本发明的优选方案，所述第二股骨钉靠近第二股骨钉头部安装槽的一端设置有第二股骨钉螺纹，第二股骨钉远离第二股骨钉螺纹的一端设置有第二股骨钉内孔。As a preferred solution of the present invention, the second femoral nail is provided with a second femoral nail thread near one end of the second femoral nail head installation groove, and the second femoral nail is provided with a second femoral nail at an end far away from the second femoral nail thread. Bore.
作为本发明的优选方案，所述髓内钉的尾部分别设置有第一螺钉孔和第二螺钉孔，第一螺钉孔内安装有第一螺钉，第二螺钉孔内安装有第二螺钉。As a preferred solution of the present invention, the tail of the intramedullary nail is respectively provided with a first screw hole and a second screw hole, the first screw hole is installed in the first screw hole, and the second screw hole is installed in the second screw hole.
与现有技术相比，本发明的有益效果是：Compared with prior art, the beneficial effect of the present invention is:
1、本发明的第一固定件能将第一股骨钉固定于髓内钉上，第二固定件将第二股骨钉固定于髓内钉上，第一股骨钉的一端卡合在第二股骨钉头部安装槽内，从而髓内钉、第一股骨钉、第二股骨钉形成稳定的三角形结构。当第一股骨钉或第二股骨钉在安装后受到挤压时，第一股骨钉和第二股骨钉相互卡紧，不会出现退钉或者折断现象，保证了股骨固定牢靠。1. The first fixing part of the present invention can fix the first femoral nail on the intramedullary nail, the second fixing part can fix the second femoral nail on the intramedullary nail, and one end of the first femoral nail is engaged with the second femoral nail. The nail head is installed in the groove, so that the intramedullary nail, the first femoral nail and the second femoral nail form a stable triangular structure. When the first femoral nail or the second femoral nail is squeezed after being installed, the first femoral nail and the second femoral nail are clamped tightly to each other, and there is no phenomenon of screw withdrawal or breakage, which ensures firm fixation of the femur.
2、当第一股骨钉和第二股骨钉分别安装于髓内钉后，将第一封口钉安装到第一封口螺纹孔内，第一封口钉将第一股骨钉固定死，从而，整个三角形结构实现快速稳定连接，无论本发明的固定装置受到哪个方向的挤压力，第一股骨钉和第二股骨钉会始终保证稳定结构。2. After the first femoral nail and the second femoral nail are respectively installed on the intramedullary nail, the first sealing nail is installed in the first sealing threaded hole, and the first sealing nail fixes the first femoral nail, so that the entire triangular The structure realizes fast and stable connection, no matter which direction the fixing device of the present invention is subjected to the extrusion force, the first femoral nail and the second femoral nail will always ensure a stable structure.
3、第二封口钉能将第二股骨钉固定死，从而第二股骨钉的稳定性进一步提高，保证第二股骨钉的连接可靠性。3. The second sealing nail can fix the second femoral nail, thereby further improving the stability of the second femoral nail and ensuring the connection reliability of the second femoral nail.
4、第一股骨钉从设置有第一股骨钉螺纹的一端攻入髓内钉内，便于第一股骨钉安装进第一股骨钉孔，第一股骨钉的另一端为光轴，避免了第一股骨钉在股骨内转动而损伤股骨的情况。4. The first femoral nail penetrates into the intramedullary nail from the end provided with the thread of the first femoral nail, which facilitates the installation of the first femoral nail into the hole of the first femoral nail. The other end of the first femoral nail is the optical axis, avoiding the A condition in which a pin rotates within the femur and damages the femur.
5、第二股骨钉从设置有第二股骨钉螺纹的一端攻入髓内钉内，便于第二股骨钉安装进第二股骨钉孔，第二股骨钉的另一端为光轴，避免了第二股骨钉在股骨内转动而损伤股骨的情况。5. The second femoral nail penetrates into the intramedullary nail from the end provided with the thread of the second femoral nail, which facilitates the installation of the second femoral nail into the hole of the second femoral nail. The other end of the second femoral nail is the optical axis, avoiding the Two femoral nails rotate in the femur and damage the femur.
6、第一螺钉和第二螺钉能将髓内钉的尾部固定死，从而增强整个髓内钉的稳定性。6. The first screw and the second screw can fix the tail of the intramedullary nail, thereby enhancing the stability of the whole intramedullary nail.
附图说明Description of drawings
图1是本发明的安装结构示意图；Fig. 1 is a schematic diagram of the installation structure of the present invention;
图2是本发明的结构示意图；Fig. 2 is a structural representation of the present invention;
图3是本髓内钉的左视图；Fig. 3 is the left side view of this intramedullary nail;
图4是髓内钉的剖视图；Figure 4 is a sectional view of the intramedullary nail;
图5是图4中A处的局部放大图；Fig. 5 is a partial enlarged view of place A in Fig. 4;
图6是第一封口钉和第二封口钉的结构示意图；Fig. 6 is a schematic structural view of the first sealing nail and the second sealing nail;
图7是第一股骨钉的俯视图；Fig. 7 is the top view of the first femoral nail;
图8是第二股骨钉的主视图；Fig. 8 is the front view of the second femoral nail;
图9是第二股骨钉的俯视图。Fig. 9 is a top view of the second femoral nail.
图中，1-髓内钉，2-第一股骨钉，3-第二股骨钉，4-第一封口钉，5-第二封口钉，6-第一螺钉，7-第二螺钉，8-第一股骨钉孔，9-第二股骨钉孔，10-第一螺钉孔，11-第二螺钉孔，12-第一封口螺纹孔，13-第二封口螺纹孔，14-第一股骨钉安装槽，15-第一股骨钉螺纹，16-第一股骨钉内孔，17-第二股骨钉头部安装槽，18-第二股骨钉安装槽，19-第二股骨钉螺纹，20-第二股骨钉内孔。In the figure, 1-intramedullary nail, 2-first femoral nail, 3-second femoral nail, 4-first sealing nail, 5-second sealing nail, 6-first screw, 7-second screw, 8 -First femoral screw hole, 9-Second femoral screw hole, 10-First screw hole, 11-Second screw hole, 12-First sealing screw hole, 13-Second sealing screw hole, 14-First femur Nail installation slot, 15-first femoral screw thread, 16-first femoral screw inner hole, 17-second femoral screw head installation slot, 18-second femoral screw installation slot, 19-second femoral screw thread, 20 -Second femoral nail inner hole.
具体实施方式detailed description
下面结合附图，对本发明作详细的说明。Below in conjunction with accompanying drawing, the present invention is described in detail.
为了使本发明的目的、技术方案及优点更加清楚明白，以下结合附图及实施例，对本发明进行进一步详细说明。应当理解，此处所描述的具体实施例仅用以解释本发明，并不用于限定本发明。In order to make the object, technical solution and advantages of the present invention clearer, the present invention will be further described in detail below in conjunction with the accompanying drawings and embodiments. It should be understood that the specific embodiments described here are only used to explain the present invention, not to limit the present invention.
本发明的实施过程：Implementation process of the present invention:
图1和图2为股骨近端嵌插式加强髓内固定装置的结构图和装配状态示意图，包括髓内钉1，第一股骨钉2，第二股骨钉3，第一封口钉4，第一螺钉6，第二螺钉7。在C形臂X线机引导下，将髓内钉1安装入股骨干；再安装第二股骨钉3，使用第二封口钉5锁定；再安装第一股骨钉3，使第一股骨钉2的头部置于第二股骨钉头部安装槽17中，接着安装第一封口钉4，使所述第一封口钉4的头部置于第一股骨钉安装槽14中。达到同时锁定第一股骨钉2和第二股骨钉3的目的，使整个装置更加坚固耐用，有效避免退钉发生。Fig. 1 and Fig. 2 are the structural diagram and assembly state diagram of the proximal femoral intercalated reinforced intramedullary fixation device, including the intramedullary nail 1, the first femoral nail 2, the second femoral nail 3, the first sealing nail 4, and the second femoral nail. One screw 6, the second screw 7. Under the guidance of the C-arm X-ray machine, install the intramedullary nail 1 into the femoral shaft; install the second femoral nail 3 and lock it with the second sealing nail 5; install the first femoral nail 3 again, so that the first femoral nail 2 The head is placed in the second femoral screw head installation groove 17 , and then the first sealing nail 4 is installed so that the head of the first sealing nail 4 is placed in the first femoral screw installation groove 14 . The purpose of locking the first femoral nail 2 and the second femoral nail 3 at the same time is achieved, making the whole device stronger and more durable, and effectively avoiding nail withdrawal.
实施例一Embodiment one
一种股骨近端嵌插式加强髓内固定装置，包括髓内钉1，髓内钉1的头部分别设置有第一股骨钉孔8和第二股骨钉孔9，第一股骨钉孔8内安装有第一股骨钉2，第一股骨钉2和髓内钉1之间连接有用于固定第一股骨钉2的第一固定件，第二股骨钉孔9内安装有第二股骨钉3，第二股骨钉3和髓内钉1之间连接有用于固定第二股骨钉3的第二固定件；第二股骨钉3的一端设置有第二股骨钉头部安装槽17，第一股骨钉2的一端卡合在第二股骨钉头部安装槽17内。A proximal femur intercalated reinforced intramedullary fixation device, comprising an intramedullary nail 1, the head of the intramedullary nail 1 is respectively provided with a first femoral nail hole 8 and a second femoral nail hole 9, the first femoral nail hole 8 A first femoral nail 2 is installed inside, a first fixture for fixing the first femoral nail 2 is connected between the first femoral nail 2 and the intramedullary nail 1, and a second femoral nail 3 is installed in the second femoral nail hole 9 , a second fixer for fixing the second femoral nail 3 is connected between the second femoral nail 3 and the intramedullary nail 1; one end of the second femoral nail 3 is provided with a second femoral nail head installation groove 17, and the first femoral nail One end of the nail 2 is engaged in the installation groove 17 of the head of the second femoral nail.
本发明的第一固定件能将第一股骨钉2固定于髓内钉1上，第二固定件将第二股骨钉3固定于髓内钉1上，第一股骨钉2的一端卡合在第二股骨钉头部安装槽17内，从而髓内钉1、第一股骨钉2、第二股骨钉3形成稳定的三角形结构。当第一股骨钉2或第二股骨3钉在安装后受到挤压时，第一股骨钉2和第二股骨钉3相互卡紧，不会出现退钉或者折断现象，保证了股骨固定牢靠。The first fixing part of the present invention can fix the first femoral nail 2 on the intramedullary nail 1, the second fixing part can fix the second femoral nail 3 on the intramedullary nail 1, and one end of the first femoral nail 2 is engaged on the The head of the second femoral nail is installed in the groove 17, so that the intramedullary nail 1, the first femoral nail 2, and the second femoral nail 3 form a stable triangular structure. When the first femoral nail 2 or the second femoral nail 3 is squeezed after being installed, the first femoral nail 2 and the second femoral nail 3 are clamped tightly to each other, and there will be no screw back or breakage, which ensures firm femoral fixation.
实施例二Embodiment two
在实施例一的基础上，所述髓内钉1内设置有第一封口螺纹孔12，第一封口螺纹孔12与第一股骨钉孔8贯通，第一股骨钉2上设置有若干第一股骨钉安装槽14；第一固定件第一封口钉4，第一封口钉4安装于第一封口螺纹孔12内，第一封口钉4的一端穿过第一封口螺纹孔12后连接于其中一个第一股骨钉安装槽14内。On the basis of the first embodiment, the intramedullary nail 1 is provided with a first sealing threaded hole 12, the first sealing threaded hole 12 communicates with the first femoral nail hole 8, and the first femoral nail 2 is provided with several first Femoral nail installation groove 14; first fixing part first sealing nail 4, the first sealing nail 4 is installed in the first sealing threaded hole 12, and one end of the first sealing nail 4 passes through the first sealing threaded hole 12 and is connected therein A first femoral nail is installed in the groove 14.
当第一股骨钉2和第二股骨钉3分别安装于髓内钉1后，将第一封口钉4安装到第一封口螺纹孔12内，第一封口钉4将第一股骨钉2固定死，从而，整个三角形结构实现快速稳定连接，无论本发明的固定装置受到哪个方向的挤压力，第一股骨钉2和第二股骨钉3会始终保证稳定结构。After the first femoral nail 2 and the second femoral nail 3 are installed on the intramedullary nail 1 respectively, the first sealing nail 4 is installed in the first sealing threaded hole 12, and the first sealing nail 4 fixes the first femoral nail 2 to death , thus, the entire triangular structure realizes fast and stable connection, no matter which direction the fixing device of the present invention is subjected to the extrusion force, the first femoral nail 2 and the second femoral nail 3 will always ensure a stable structure.
实施例三Embodiment Three
在实施例一或实施例二的基础上，所述髓内钉1内设置有第二封口螺纹孔13，第二封口螺纹孔13的两端分别与第一股骨钉孔8和第二股骨钉孔9贯通，第二股骨钉3上设置有若干第二股骨钉安装槽18；第二固定件第二封口钉5，第二封口钉5安装于第二封口螺纹孔13内，第二封口钉5的一端穿过第二封口螺纹孔13后连接于其中一个第二股骨钉安装槽18内。On the basis of Embodiment 1 or Embodiment 2, a second sealing threaded hole 13 is arranged in the described intramedullary nail 1, and the two ends of the second sealing threaded hole 13 are connected with the first femoral nail hole 8 and the second femoral nail respectively. The hole 9 runs through, and the second femoral nail 3 is provided with a plurality of second femoral nail installation grooves 18; the second fixing part is the second sealing nail 5, and the second sealing nail 5 is installed in the second sealing threaded hole 13, and the second sealing nail One end of 5 passes through the second sealing threaded hole 13 and is connected in one of the second femoral nail installation grooves 18 .
第二封口钉5能将第二股骨钉3固定死，从而第二股骨钉3的稳定性进一步提高，保证第二股骨钉3的连接可靠性。The second sealing nail 5 can fix the second femoral nail 3 to death, thereby further improving the stability of the second femoral nail 3 and ensuring the connection reliability of the second femoral nail 3 .
实施例四Embodiment Four
在上述任意一项实施例的基础上，所述第一股骨钉2靠近第二股骨钉头部安装槽17的一端设置有第一股骨钉螺纹15，第一股骨钉2远离第一股骨钉螺纹15的一端设置有第一股骨钉内孔16。On the basis of any one of the above-mentioned embodiments, one end of the first femoral nail 2 near the second femoral nail head installation groove 17 is provided with a first femoral nail thread 15, and the first femoral nail 2 is far away from the first femoral nail thread. One end of 15 is provided with a first femoral nail inner hole 16 .
第一股骨钉2从设置有第一股骨钉螺纹15的一端攻入髓内钉1内，便于第一股骨钉2安装进第一股骨钉孔8，第一股骨钉2的另一端为光轴，避免了第一股骨钉2在股骨内转动而损伤股骨的情况。The first femoral nail 2 penetrates into the intramedullary nail 1 from the end provided with the first femoral nail thread 15, so that the first femoral nail 2 is installed into the first femoral nail hole 8, and the other end of the first femoral nail 2 is the optical axis , avoiding the situation that the first femoral nail 2 rotates in the femur and damages the femur.
实施例五Embodiment five
在上述任意一项实施例的基础上，所述第二股骨钉3靠近第二股骨钉头部安装槽17的一端设置有第二股骨钉螺纹19，第二股骨钉3远离第二股骨钉螺纹19的一端设置有第二股骨钉内孔20。On the basis of any one of the above-mentioned embodiments, the second femoral nail 3 is provided with a second femoral nail thread 19 near the end of the second femoral nail head mounting groove 17, and the second femoral nail 3 is away from the second femoral nail thread. One end of 19 is provided with a second femoral nail inner hole 20 .
第二股骨钉3从设置有第二股骨钉螺纹19的一端攻入髓内钉1内，便于第二股骨钉3安装进第二股骨钉孔9，第二股骨钉3的另一端为光轴，避免了第二股骨钉3在股骨内转动而损伤股骨的情况。The second femoral nail 3 penetrates into the intramedullary nail 1 from the end provided with the second femoral nail thread 19, so that the second femoral nail 3 is installed into the second femoral nail hole 9, and the other end of the second femoral nail 3 is the optical axis , avoiding the situation that the second femoral nail 3 rotates in the femur and damages the femur.
实施例六Embodiment six
在上述任意一项实施例的基础上，所述髓内钉1的尾部分别设置有第一螺钉孔10和第二螺钉孔11，第一螺钉孔10内安装有第一螺钉6，第二螺钉孔11内安装有第二螺钉7。On the basis of any one of the above embodiments, the tail portion of the intramedullary nail 1 is respectively provided with a first screw hole 10 and a second screw hole 11, the first screw hole 10 is installed with the first screw 6, the second screw A second screw 7 is installed in the hole 11 .
第一螺钉6和第二螺钉7能将髓内钉1的尾部固定死，从而增强整个髓内钉1的稳定性。The first screw 6 and the second screw 7 can fix the tail of the intramedullary nail 1 to enhance the stability of the whole intramedullary nail 1 .
Claims (6)
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