CN201085668Y - Pressurization locking fixer for femoral neck stem - Google Patents
Pressurization locking fixer for femoral neck stem Download PDFInfo
- Publication number
- CN201085668Y CN201085668Y CNU2007200293718U CN200720029371U CN201085668Y CN 201085668 Y CN201085668 Y CN 201085668Y CN U2007200293718 U CNU2007200293718 U CN U2007200293718U CN 200720029371 U CN200720029371 U CN 200720029371U CN 201085668 Y CN201085668 Y CN 201085668Y
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- CN
- China
- Prior art keywords
- blade plate
- locking
- neck
- femur
- screw
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Expired - Fee Related
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Abstract
Disclosed is a femur stem compression locking coaptation device which comprises a blade plate and a locking screw; the blade plate is composed of a neck part, a body part and a rear part; compression holes are arranged on the body and the rear parts; the locking screw is bolt-shaped and hollow; the locking screw is composed of a head part, a rod part; the angle formed between the neck part and the body part of the blade plate is 160 degrees to 165 degrees corresponding to the near end anatomical surface of the femur; two screw holes with thread inside are arranged on the neck part; external thread is arranged on the head part of the locking screw; and the locking screw is connected with the thread in the neck part. The utility model has the advantages that the locking screw whose head part is provided with external thread is in threaded connection with the blade plate to prevent the locking screw from rotating, slipping in human body; a self-tapping head is arranged on the front end of the rod part of the locking screw; and the pitch of the thread on the rod part is bigger than the pitch of the thread on the head part so that the compression effect is realized when the utility model is in use.
Description
Technical field
This utility model relates to a kind of medical apparatus and instruments, relates in particular to a kind of neck of femur pressurizing locking fixer.
Background technology
At present, Orthopeadic Surgery is done the bone fracture device that uses when the neck of femur cadre fractures internal fixation and is mainly comprised dynamic hip screw and lockplate clinically, and the dynamic hip screw blade plate partly is cervical region, body, afterbody; Design has the sleeve that stretches to femoral neck on the cervical region, cooperates the nail that slides to carry out fracture fixation, and the shortcoming of this blade plate is: complex structure, and operation easier is big, long incision, tissue is peeled off many, and wound is big, and the bone road is thick, and anti-rotation performance is poor, and pressurization is limited.The lockplate structure is divided into cervical region, body, afterbody; The cervical region screw is more, and the locking nail head is provided with interior hexagonal, and locking nail bar portion is provided with screw thread, screw thread is closeer, and the lockplate shortcoming of this structure is: the locking nail quantity that penetrates in the neck of femur is more, and angle is bigger, because required nail is many, increased bone destruction, and the possibility that passes outside the bone has been arranged, and because screw is thinner, nail is long shorter, locking nail can not pressurize in vivo, easily rotation, slippage.
Summary of the invention
The purpose of this utility model provides a kind of simple in structure, can pressurize, resist the anti-slip neck of femur pressurizing locking fixer of rotation in human body.
For achieving the above object, the technical scheme that this utility model adopted is:
A kind of neck of femur pressurizing locking fixer, comprising: blade plate, locking nail: blade plate is divided into cervical region, body, afterbody, and body and afterbody are provided with the pressurization hole; Locking nail is a bolt shape, hollow; Locking nail is divided into the head that is provided with interior hexagonal, the bar portion that is provided with screw thread; It is characterized in that: the cervical region of blade plate becomes 160～165 ° of angles with body, corresponding with the near end of thighbone dissection surface; Cervical region has two screws, and is tapered, is provided with screw thread in the screw; The head of locking nail is provided with external screw thread; Locking nail passes the screw of cervical region, and the head of locking nail is threaded with screw on the cervical region.
According to described neck of femur pressurizing locking fixer, it is characterized in that: screw axial direction on the above-mentioned blade plate and blade plate body form angle, and for dissecting collodiaphyseal angle, the angle of dissecting collodiaphyseal angle is 90 °～135 °.
According to described neck of femur pressurizing locking fixer, it is characterized in that: screw axial direction on the above-mentioned blade plate and blade plate cervical region plane constitute angle, and for dissecting top rake, dissecting top rake is 10 °～30 °.
According to described neck of femur pressurizing locking fixer, it is characterized in that: be parallel to each other between the two screw axial directions on the above-mentioned blade plate.
According to described neck of femur pressurizing locking fixer, it is characterized in that: become cohesion angle or angle of splay, 5 °～15 ° of angles between two screws on the above-mentioned blade plate.
According to described neck of femur pressurizing locking fixer, it is characterized in that: be provided with screw thread in the pressurization hole of the afterbody on the above-mentioned blade plate.
According to described neck of femur pressurizing locking fixer, it is characterized in that: the pitch of above-mentioned locking nail bar portion screw thread is greater than the pitch of head threads.
According to described neck of femur pressurizing locking fixer, it is characterized in that: above-mentioned locking nail bar portion Front-end Design has from tap holder.
According to described neck of femur pressurizing locking fixer, it is characterized in that: the screw thread of above-mentioned locking nail bar portion is a full thread.
The utility model has the advantages that: because the cervical region of the blade plate in this utility model has two screws, screw is tapered, be provided with screw thread in the screw, this design can make head be provided with externally threaded locking nail and conveniently be threaded with blade plate, can prevent that locking nail from rotating in vivo, slippage, the bar portion Front-end Design of locking nail has from tap holder, the pitch of bar portion screw thread is greater than the pitch of head threads, so the effect of pressurization is arranged when using this utility model, can make blade plate more fixing, so this utility model is a kind of simple in structure, can pressurize in human body, the anti-slip neck of femur pressurizing locking fixer of anti-rotation.
Description of drawings
Fig. 1 is the cutaway view of blade plate in this utility model;
Fig. 2 is this utility model structural representation:
Fig. 3 is Fig. 2 vertical view;
Fig. 4 is the structural representation of locking nail in this utility model.
The specific embodiment
Below in conjunction with accompanying drawing and specific embodiment this utility model is further described:
A kind of neck of femur pressurizing locking fixer shown in Fig. 1,2,3,4, comprising: blade plate and locking nail 9.Blade plate is divided into cervical region 5, body 2, afterbody 1 as shown in Figure 1, and body and afterbody are provided with pressurization hole 7.
Locking nail is bolt shape as shown in Figure 4, hollow, and locking nail 9 is divided into the head that is provided with interior hexagonal, the bar portion that is provided with screw thread.
As shown in Figure 1,2 one-tenth 160～165 ° of angles of the cervical region 5 and the body of blade plate, corresponding with the near end of thighbone dissection surface.Cervical region has two screws 6, and screw 6 is slightly tapered, is convenient to locking nail and locks, and is provided with screw thread in the screw.The head of locking nail is provided with external screw thread 12, and locking nail 9 passes the screw 6 of cervical region 5, and the head of locking nail is threaded with screw on the cervical region.In the present embodiment, screw axial direction on the blade plate and blade plate body form angle, and for dissecting collodiaphyseal angle 3, collodiaphyseal angle 3 is provided with 90 °, 100 °, 110 °, 120 °, 130 °, 135 ° multiple angles models.
As shown in Figure 3, in the present embodiment, the planar vertical line of the axis of the screw 6 on the blade plate 5 and blade plate cervical region constitutes angle, be to dissect top rake 10, and top rake about 10 minutes two kinds, angle has 10 °, 15 °, 20 °, 25 °, 30 ° multiple models.
As shown in Figure 1, in the present embodiment, can be parallel to each other between the axis of the screw 6 on the blade plate, perhaps become cohesion angle 4 or angle of splay, 5 °～15 ° of angles between the screw axial direction on the blade plate.In the present embodiment, be provided with screw thread 8 in the pressurization hole of the afterbody on the blade plate.
As shown in Figure 4, in the present embodiment, the pitch of locking nail bar portion screw thread 13 can be pressurizeed to fracture end in the locking process greater than the pitch of head threads 12.In the present embodiment, locking nail bar portion Front-end Design has from tap holder 11.In the present embodiment, the screw thread of locking nail bar portion can be full thread.
Claims (9)
1. a neck of femur pressurizing locking fixer comprises: blade plate and locking nail (9); Blade plate is divided into cervical region (5), body (2), afterbody (1), and body and afterbody are provided with pressurization hole (7); Locking nail is a bolt shape, hollow; Locking nail is divided into head that is provided with interior hexagonal and the bar portion that is provided with screw thread; It is characterized in that: the cervical region of blade plate (5) becomes 160～165 ° of angles with body (2), and is corresponding with the near end of thighbone dissection surface; Cervical region (5) has two screws (6), and screw (6) is tapered, is provided with screw thread in the screw; The head of locking nail is provided with external screw thread (12); Locking nail (9) passes the screw (6) of cervical region, and the head of locking nail is threaded with screw (6) on the cervical region.
2. neck of femur pressurizing locking fixer according to claim 1 is characterized in that: the axis of the screw on the above-mentioned blade plate (6) and blade plate body form angle, and for dissecting collodiaphyseal angle (3), the angle of dissecting collodiaphyseal angle (3) is 90 °～135 °.
3. neck of femur pressurizing locking fixer according to claim 1, it is characterized in that: the planar vertical line of the axis of the screw on the above-mentioned blade plate (6) and blade plate cervical region constitutes angle, for dissecting top rake (10), dissecting top rake (10) is 10 °～30 °.
4. neck of femur pressurizing locking fixer according to claim 1 is characterized in that: be parallel to each other between the axis of two screws (6) on the above-mentioned blade plate.
5. neck of femur pressurizing locking fixer according to claim 1 is characterized in that: become cohesion angle (4) or angle of splay, 5 °～15 ° of angles between two screws (6) on the above-mentioned blade plate.
6. neck of femur pressurizing locking fixer according to claim 1 is characterized in that: be provided with screw thread (8) in the pressurization hole of the afterbody on the above-mentioned blade plate.
7. neck of femur pressurizing locking fixer according to claim 1 is characterized in that: the pitch of above-mentioned locking nail bar portion screw thread (13) is greater than the pitch of head threads (12).
8. neck of femur pressurizing locking fixer according to claim 1 is characterized in that: above-mentioned locking nail bar portion Front-end Design has from tap holder (11).
9. neck of femur pressurizing locking fixer according to claim 1 is characterized in that: the screw thread of above-mentioned locking nail bar portion is a full thread.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNU2007200293718U CN201085668Y (en) | 2007-10-18 | 2007-10-18 | Pressurization locking fixer for femoral neck stem |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNU2007200293718U CN201085668Y (en) | 2007-10-18 | 2007-10-18 | Pressurization locking fixer for femoral neck stem |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN201085668Y true CN201085668Y (en) | 2008-07-16 |
Family
ID=39633258
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CNU2007200293718U Expired - Fee Related CN201085668Y (en) | 2007-10-18 | 2007-10-18 | Pressurization locking fixer for femoral neck stem |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN201085668Y (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102961175A (en) * | 2012-08-29 | 2013-03-13 | 苏州瑞华医院有限公司 | External fixing and locking nail plate system for treating femoral intertrochanteric fracture |
| CN104622554A (en) * | 2013-11-12 | 2015-05-20 | 玉林市骨科医院 | Locking support for treating femoral intertrochanteric fracture through minimally invasive therapy |
| CN111281516A (en) * | 2020-02-27 | 2020-06-16 | 天津市威曼生物材料有限公司 | Anatomical external fixation steel plate and fixation system for femoral neck fracture |
-
2007
- 2007-10-18 CN CNU2007200293718U patent/CN201085668Y/en not_active Expired - Fee Related
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102961175A (en) * | 2012-08-29 | 2013-03-13 | 苏州瑞华医院有限公司 | External fixing and locking nail plate system for treating femoral intertrochanteric fracture |
| CN104622554A (en) * | 2013-11-12 | 2015-05-20 | 玉林市骨科医院 | Locking support for treating femoral intertrochanteric fracture through minimally invasive therapy |
| CN111281516A (en) * | 2020-02-27 | 2020-06-16 | 天津市威曼生物材料有限公司 | Anatomical external fixation steel plate and fixation system for femoral neck fracture |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C19 | Lapse of patent right due to non-payment of the annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |