技术领域technical field
本发明涉及医疗器械技术领域，具体涉及一种空心髓内钉。The invention relates to the technical field of medical instruments, in particular to a hollow intramedullary nail.
背景技术Background technique
在骨折医治外科手术中，在断骨的远端和近端的髓腔内置入一生物相容性好、强度高的内置物——髓内钉。不仅可以达到骨折端的连接和固定的目的，而且病人可以免除外固定之苦，能够在医疗早期进行功能锻炼，因此髓内钉已广泛应用于临床实践中。In fracture healing surgery, a biocompatible and high-strength implant—the intramedullary nail—is inserted into the medullary cavity at the distal and proximal ends of the broken bone. Not only can the connection and fixation of the fracture end be achieved, but also the patient can avoid the pain of external fixation and can perform functional exercises in the early stage of medical treatment. Therefore, intramedullary nails have been widely used in clinical practice.
现在普通使用的髓内钉如图1-2所示，包括钉体1’，钉体1’内设置有通孔11’，所述通孔11’沿钉体1’的中心轴线延伸，所述钉体1’的近端设置有第一锁钉孔12’，所述钉体1’的远端设置有第二锁钉孔13’，所述第一锁钉孔12’和第二锁钉孔13’均与通孔11’相同。The commonly used intramedullary nail is shown in Fig. 1-2, which includes a nail body 1', and a through hole 11' is arranged in the nail body 1', and the through hole 11' extends along the central axis of the nail body 1', so The proximal end of the nail body 1' is provided with a first locking nail hole 12', and the distal end of the nail body 1' is provided with a second locking nail hole 13', and the first locking nail hole 12' and the second locking nail hole The nail holes 13' are all the same as the through holes 11'.
上述结构的髓内钉，虽然方便在髓内钉植入前先植入细的长导针(相比髓内钉，细的长导针更容易穿过断裂处，贯通整个髓腔)，然后髓内钉通过通孔顺着这个长导针塞入骨内。但是在髓内钉植入后，尤其是在髓内钉用于治疗股骨颈、胫骨平台或者是肱骨头断裂、碎裂等症状时，需要先在髓内钉近端的第一锁钉孔12’内打上锁钉，这样一来，贯通的通孔11’的近端被锁钉挡住，如需在髓内钉内放置带有磁性的长导针或者头部带有发光体的长导针来辅助外部工具进行远端瞄准，就无法实现了。The intramedullary nail with the above structure is convenient to implant a thin long guide wire before the intramedullary nail is implanted (compared with the intramedullary nail, the thin long guide wire is easier to pass through the fracture and penetrate the entire medullary cavity), and then The intramedullary nail is inserted into the bone along this long guide wire through the through hole. However, after the intramedullary nail is implanted, especially when the intramedullary nail is used to treat symptoms such as femoral neck, tibial plateau, or humeral head fracture and fragmentation, it is necessary to first lock the nail hole 12 at the proximal end of the intramedullary nail. The locking nail is placed inside the nail, so that the proximal end of the through hole 11' is blocked by the locking nail. If it is necessary to place a long magnetic guide pin or a long guide pin with a luminous body on the head in the intramedullary nail To assist external tools for remote aiming, it cannot be realized.
发明内容Contents of the invention
为了解决现有技术中存在的髓内钉的通孔被挡住，不利于远端瞄准的问题，本发明提出一种空心髓内针，解决了上述技术问题。本发明的技术方案如下：In order to solve the problem in the prior art that the through hole of the intramedullary nail is blocked, which is not conducive to the aiming of the distal end, the present invention proposes a hollow intramedullary nail to solve the above technical problems. Technical scheme of the present invention is as follows:
一种空心髓内钉，包括钉体，所述钉体内设置有通孔，所述钉体的近端设置有第一锁钉孔，所述通孔由所述钉体的近端延伸至钉体的远端，所述通孔相对于所述第一锁钉孔偏置设置。A hollow intramedullary nail, comprising a nail body, the nail body is provided with a through hole, the proximal end of the nail body is provided with a first locking nail hole, and the through hole extends from the proximal end of the nail body to the nail The distal end of the body, the through hole is offset relative to the first locking nail hole.
进一步地，所述通孔包括沿钉体近端到远端依次连通的偏置段、连接段和延伸段，所述偏置段相对于所述第一锁钉孔偏置设置。Further, the through hole includes an offset section, a connecting section and an extension section which are sequentially communicated from the proximal end to the distal end of the nail body, and the offset section is offset relative to the first locking nail hole.
进一步地，所述第一锁钉孔经过所述钉体的轴线，所述偏置段为开设在所述钉体外圆周面上的U型槽。Further, the first locking nail hole passes through the axis of the nail body, and the offset section is a U-shaped groove opened on the outer peripheral surface of the nail.
进一步地，所述偏置段从钉体近端端头延伸至钉体长度的1/3处，所述第一锁钉孔位于钉体的与偏置段相应的位置。Further, the offset section extends from the proximal end of the nail body to 1/3 of the length of the nail body, and the first locking nail hole is located on the nail body at a position corresponding to the offset section.
进一步地，所述延伸段沿钉体的轴线方向设置，所述连接段连通所述偏置段和所述延伸段。Further, the extension section is arranged along the axis of the nail body, and the connection section communicates with the offset section and the extension section.
进一步地，所述钉体的远端设置有第二锁钉孔。Further, the distal end of the nail body is provided with a second locking nail hole.
进一步地，所述第二锁钉孔经过所述钉体的轴线。Further, the second locking nail hole passes through the axis of the nail body.
进一步地，所述第一锁钉孔和所述第二锁钉孔均至少为两个。Further, there are at least two first locking nail holes and at least two second locking nail holes.
基于上述技术方案，本发明所能实现的技术效果为：本发明的空心髓内钉结构简单，不仅能实现在髓内钉植入前，先植入细的长导针，然后髓内钉通过通孔顺着长导针塞入骨内，而且在髓内钉植入后且近端打上锁钉的情况下，仍然能够在通孔内放置放置带有磁性的长导针或者头部带有发光体的长导针，辅助外部工具进行远端瞄准。此外，本发明的空心髓内钉的延伸段依然沿钉体的中心轴线延伸，这样导针插入后，末端的方向不会有偏差，方便准确高效地进行远端瞄准。Based on the above-mentioned technical scheme, the technical effect that the present invention can realize is: the hollow intramedullary nail of the present invention has a simple structure, and can not only realize that before the intramedullary nail is implanted, a long and thin guide wire can be implanted first, and then the intramedullary nail can pass through. The through hole is inserted into the bone along the long guide wire, and after the intramedullary nail is implanted and the proximal end is locked, it is still possible to place a long magnetic guide wire or a luminescent head in the through hole. A long guide pin on the body to aid in distal aiming of external tools. In addition, the extension section of the hollow intramedullary nail of the present invention still extends along the central axis of the nail body, so that after the guide wire is inserted, the direction of the end will not deviate, which facilitates accurate and efficient distal aiming.
附图说明Description of drawings
图1为现有技术中的髓内钉的结构示意图；FIG. 1 is a schematic structural view of an intramedullary nail in the prior art;
图2为图1的F-F截面图；Fig. 2 is the F-F sectional view of Fig. 1;
图3为本发明的空心髓内钉的结构示意图；Fig. 3 is a schematic structural view of the hollow intramedullary nail of the present invention;
图4为图3的D-D截面图；Fig. 4 is a D-D sectional view of Fig. 3;
图5为图3的E-E截面图；Fig. 5 is the E-E sectional view of Fig. 3;
图中：1-钉体；11-通孔；12-第一锁钉孔；13-第二锁钉孔；A-偏置段；B-连接段；C-延伸段；1’-钉体；11’-通孔；12’-第一锁钉孔；13’-第二锁钉孔。In the figure: 1-nail body; 11-through hole; 12-first locking nail hole; 13-second locking nail hole; A-offset section; B-connecting section; C-extension section; 1'-nail body ; 11'-through hole; 12'-first locking nail hole; 13'-second locking nail hole.
具体实施方式Detailed ways
下面结合说明书附图对本发明的内容作进一步地描述。The content of the present invention will be further described below in conjunction with the accompanying drawings.
如图3-5所示，本实施例公开了一种空心髓内钉，包括钉体1，所述钉体1内设置有通孔11，所述钉体1的近端设置有第一锁钉孔12，所述钉体1的远端设置有第二锁钉孔13。As shown in Figures 3-5, this embodiment discloses a hollow intramedullary nail, including a nail body 1, a through hole 11 is arranged in the nail body 1, and a first lock is arranged at the proximal end of the nail body 1. Nail hole 12, the distal end of the nail body 1 is provided with a second locking nail hole 13.
所述第一锁钉孔12和所述第二锁钉孔13均经过所述针体1的轴线，所述第一锁钉孔12和所述第二锁钉孔13均至少为两个，优选为2-5个。所述第一锁钉孔12和所述第二锁钉孔13均用于放置锁钉，起到固定作用。Both the first locking nail hole 12 and the second locking nail hole 13 pass through the axis of the needle body 1, and there are at least two first locking nail holes 12 and the second locking nail holes 13, Preferably 2-5. Both the first locking nail hole 12 and the second locking nail hole 13 are used to place locking nails and play a fixing role.
所述通孔11由钉体1的近端贯通至钉体1的远端，为了避免钉体1近端的第一锁钉孔12内的锁钉挡住所述通孔11，所述通孔11相对于所述第一锁钉孔12偏置设置。具体地，所述通孔包括沿钉体1近端至远端依次连通的偏置段A、连接段B和延伸段C，所述偏置段A相对于所述第一锁钉孔12偏置设置。所述延伸段C沿钉体1的轴线延伸至钉体1的远端，所述连接段B连通偏置段A和延伸段C。The through hole 11 is penetrated from the proximal end of the nail body 1 to the far end of the nail body 1. In order to prevent the locking nail in the first locking nail hole 12 at the proximal end of the nail body 1 from blocking the through hole 11, the through hole 11 is offset relative to the first locking nail hole 12 . Specifically, the through hole includes an offset section A, a connecting section B and an extension section C that are sequentially connected along the proximal end to the distal end of the nail body 1, and the offset section A is offset relative to the first locking nail hole 12. settings. The extension section C extends to the distal end of the nail body 1 along the axis of the nail body 1 , and the connecting section B communicates with the offset section A and the extension section C.
优选地，所述偏置段A为开设在所述钉体外圆周面上的U型槽，且所述偏置段A与所述第一锁钉孔12之间不相通。Preferably, the offset section A is a U-shaped groove provided on the outer peripheral surface of the nail, and the offset section A is not communicated with the first locking nail hole 12 .
优选地，所述偏置段A从钉体1的近端端头延伸至钉体1长度的1/3处，所述第一锁钉孔12位于钉体1的与偏置段A相应的位置。Preferably, the offset section A extends from the proximal end of the nail body 1 to 1/3 of the length of the nail body 1, and the first locking nail hole 12 is located on the nail body 1 corresponding to the offset section A. Location.
采用本申请的髓内钉治疗股骨颈、胫骨平台或者是肱骨头断裂、碎裂等症状时，髓内钉植入前，先植入细的长导针，然后髓内钉通过通孔11顺着这个长导针塞入骨内；髓内钉植入后，先在钉体1的近端的第一锁钉孔12内置入锁钉，如需采用外部工具进行髓内钉远端瞄准，则可在通孔11内放置带有磁性的长导针或者头部带有发光体的长导针，贯通的通孔11不会被第一锁钉孔12内的锁钉所挡住。When using the intramedullary nail of the present application to treat symptoms such as femoral neck, tibial plateau, or humeral head fracture and fragmentation, before the intramedullary nail is implanted, a thin long guide wire is first implanted, and then the intramedullary nail passes through the through hole 11 along the Insert the long guide wire into the bone; after the intramedullary nail is implanted, insert the locking nail into the first locking nail hole 12 at the proximal end of the nail body 1, and if it is necessary to use an external tool to aim at the distal end of the intramedullary nail, then A long guide pin with magnetism or a long guide pin with a luminous body on the head can be placed in the through hole 11, and the through hole 11 will not be blocked by the locking nail in the first locking nail hole 12.
本发明的一种空心髓内钉结构简单，高效实用，便于多功能操作。The hollow intramedullary nail of the present invention has simple structure, high efficiency and practicality, and is convenient for multifunctional operation.
上面结合附图对本发明的实施方式作了详细说明，但是本发明并不限于上述实施方式，在本领域普通技术人员所具备的知识范围内，还可以在不脱离本发明的宗旨的前提下做出各种变化。The embodiments of the present invention have been described in detail above in conjunction with the accompanying drawings, but the present invention is not limited to the above embodiments, within the knowledge of those of ordinary skill in the art, it can also be done without departing from the purpose of the present invention. Various changes.
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201711485868.5ACN108158644A (en) | 2017-12-29 | 2017-12-29 | A kind of hollow intramedullary nail |
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201711485868.5ACN108158644A (en) | 2017-12-29 | 2017-12-29 | A kind of hollow intramedullary nail |
| Publication Number | Publication Date |
|---|---|
| CN108158644Atrue CN108158644A (en) | 2018-06-15 |
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201711485868.5APendingCN108158644A (en) | 2017-12-29 | 2017-12-29 | A kind of hollow intramedullary nail |
| Country | Link |
|---|---|
| CN (1) | CN108158644A (en) |
| Publication number | Priority date | Publication date | Assignee | Title |
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| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
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