CN201551384U - Intramedullary fixation apparatus for intertrochanter fracture of femur - Google Patents
Intramedullary fixation apparatus for intertrochanter fracture of femur Download PDFInfo
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- CN201551384U CN201551384U CN2010201210216U CN201020121021U CN201551384U CN 201551384 U CN201551384 U CN 201551384U CN 2010201210216 U CN2010201210216 U CN 2010201210216U CN 201020121021 U CN201020121021 U CN 201020121021U CN 201551384 U CN201551384 U CN 201551384U
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- main nail
- near end
- thighbone
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Abstract
The utility model relates to an intramedullary fixation apparatus for intertrochanter fracture of femur, belonging to the field of surgical operating instrument fixation devices. The intramedullary fixation apparatus comprises a proximal femoral intramedullary main nail, a femoral neck forcing screw and a distal femoral cross-locking screw, wherein the proximal femoral intramedullary main nail is adaptive to proximal femoral intramedullary dissection, and the femoral neck forcing screw and the distal femoral cross-locking screw both penetrate through the proximal femoral intramedullary main nail. The intramedullary fixation apparatus is characterized by further comprising a femoral calcar supporting screw which obliquely penetrates through the proximal femoral intramedullary main nail to be abutted into a groove on the ventral side of the femoral neck forcing screw, and then the proximal femoral intramedullary main nail, the femoral neck forcing screw and the distal femoral cross-locking screw form a triangular stable mechanical structure. The intramedullary fixation apparatus is strong in stability, can complete indirect reduction of fracture ends and reduce interference to fracture areas and is favorable for natural fracture healing.
Description
Technical field:
This utility model relates to a kind of novel marrow inner fixing device for the treatment of intertrochanteric fracture of the femur, belongs to surgical operating instrument holder field.More definite, this utility model relates to a kind ofly can overcome existing intertrochanteric fracture of the femur fixture defective, the marrow inner fixing device that can prevent sinking of postoperative femur or coxa vara and satisfy patient's early ambulation, bear a heavy burden and require.This marrow inner fixing device comprises as main nail, femur head and neck forcing screw, bigelow's septum supporting screw and distal locking screw in the femur marrow of main part.
Background technology:
As everyone knows, intertrochanteric fracture of the femur is common occurred frequently in elderly population, and the key of old intertrochanteric fracture of the femur treatment is the early implementation operation.Give firm fixing for fracture site, allow patient's early ambulation, can promote union of fracture and prevent the complication of lying in bed.Internal fixation multiple internal fixation device occurred in clinical application practice in decades, roughly can reduce following several types: single nail class, follow closely fixed class, sliding nail-plate class and pressurization internal fixation class more.These several fixed forms respectively have the pros and cons of oneself, but a common shortcoming is all arranged, and can not guarantee patient's postoperative early loading out-of-bed activity.Internal fixation such as for example clinical DHS, the DCS that generally adopts, PFN, PFNA, r-nail cause complication such as the most advanced and sophisticated secondary fracture of coxa vara deformity, brevicollis, internal fixation fatigue break and internal fixation through regular meeting.Simultaneously since the old people because the osteoporosis that the bone calcium loss causes those serious old men of fracture degree of grinding particularly often cause the internal fixation failure.So, how to change the structural design of existing internal fixation, increase the support of complicated intertrochanteric fracture medial wall, thereby the special marrow inner fixing device that proposes a kind of special for treating intertrochanteric fracture of the femur makes patient obtain more firm support and allows the early loading walking, is the main technical problem to be solved in the present invention.
The applicant finds in secular clinical position practice process, some intertrochanteric fracture of the femur medial walls lose in the case of support, coxa vara has just appearred in postoperative in early days, but the bigelow's septum that turns in it is in case with after intramedullary pin contacts, then interior talipes varus no longer develops, it is stable to be that sclerite has obtained secondary, and fracture can heal on the mild malformation position.We can infer based on above-mentioned observed result, and bigelow's septum stump that links to each other with the femur head and neck and internal fixation constitute support, can improve the healing rate of fracture so that fracture end obtains the stronger initial stage to be stablized, and the walking of permission patient early loading.
The utility model content:
The purpose of this utility model is to overcome the above-mentioned defective of prior art, thereby a kind of marrow inner fixing device for the treatment of intertrochanteric fracture of the femur is provided.
The technical solution of the utility model is, a kind of intertrochanteric fracture marrow inner fixing device, comprise with the near end of thighbone marrow in dissect main nail in the near end of thighbone marrow adapt, pass the femur head and neck forcing screw and the bigelow's septum distal locking screw of main nail in the near end of thighbone marrow, it is characterized in that also comprising and tilt to pass the main interior bigelow's septum supporting screw of groove of following closely and be resisted against femur head and neck forcing screw veutro in the near end of thighbone marrow, thereby make main nail in the near end of thighbone marrow, femur head and neck forcing screw and bigelow's septum supporting screw formation triangle mechanics rock-steady structure.Main nail is by the titanium manufacturing in the near end of thighbone marrow, and its proximal part adopts the wide fillet trapezium structure in the inboard narrow outside.
Angle α in the near end of thighbone marrow between main nail and the femur head and neck forcing screw is 135 ± 5 degree; Angle β in bigelow's septum supporting screw and the near end of thighbone marrow between the main nail is 150 ± 5 degree.
The bigelow's septum supporting screw is cylindrical, and it has the tip of blunt round, and is most advanced and sophisticated chimeric with groove, and can slide in groove in the tip.
The intertrochanteric fracture of the femur marrow inner fixing device that this utility model provides, the section of main nail is trapezoidal in its marrow, is similar to the femoral stem of artificial joint, is complementary with anatomic form in the marrow of near end of thighbone, its mechanical stability is stronger; The tip design of forcing screw becomes helicitic texture, and the nail bar can navigate within the interior main nail of marrow and produce and slide, and finishes the persistent pressure of fracture end; Main nail three constitutes the triangle mechanics rock-steady structure jointly in bigelow's septum supporting screw and head and neck forcing screw and the marrow, increases the mechanical stability of total greatly; The bigelow's septum supporting screw can slide along the head and neck forcing screw and finely tune, and makes it directly to offset with the bigelow's septum stump, prevents coxa vara and femur head and neck rotation displacement, prevents that the secondary of the reduction of the fracture from losing, and prevents that the cutting of head and neck screw in femoral head from producing.In addition, this device can adopt the mode of percutaneous Wicresoft to insert in the body, finishes resetting indirectly of fracture end, reduces the interference to fracture area, is beneficial to the normal healing of fracture.
Description of drawings:
Fig. 1 is used for sketch map after the intertrochanteric fracture of the femur fixation for this utility model.
Fig. 2 is the front view of main nail in the near end of thighbone marrow;
Fig. 3 is the front view of femur head and neck forcing screw;
Fig. 4 is the front view of bigelow's septum supporting screw.
The specific embodiment:
With reference to the accompanying drawings, being applied to intertrochanteric fracture of the femur with this utility model is that example is illustrated the specific embodiment.
Shown in Fig. 1-4, intertrochanteric fracture marrow inner fixing device of the present utility model comprise with the near end of thighbone marrow in dissect main nail 1, femur head and neck forcing screw 2 and bigelow's septum supporting screw 3 and distal locking screw 4 in the near end of thighbone marrow adapt.Femur head and neck forcing screw 2 and bigelow's septum supporting screw 3 pass main nail 1 in the near end of thighbone marrow, and bigelow's septum supporting screw 3 is resisted against in the groove 22 of femur head and neck forcing screw 2 veutros, and three nails are common to constitute leg-of-mutton internal fixation mechanics rock-steady structure thereby make.Wherein.Angle α in the near end of thighbone marrow between main nail 1 and the femur head and neck forcing screw 2 is 135 ± 5 degree (being preferably 135 degree), angle β in bigelow's septum supporting screw 3 and the near end of thighbone marrow between the main nail 1 is 150 ± 5 degree (being preferably 150 degree), inter-locking screw 4 be used for distal femur to the near end of thighbone marrow in main nail 1 further fixing.Bigelow's septum supporting screw 3 is cylindrical, its tip 31 is a blunt round, perfect chimeric with femur head and neck forcing screw 2 veutro grooves 22, bigelow's septum supporting screw 3 can slide in groove 22 by a small margin, self adaptation fine setting supporting screw 3 is with respect to the position of femur head and neck forcing screw 2, make bigelow's septum supporting screw 3 and femur head and neck continue to such an extent that the bigelow's septum stump offsets, prevent that the cutting of unexpected coxa vara and femoral head head and neck from taking place, obtain the better mechanical stability that gets.
Described groove 22 is arranged on screw thread 21 near-ends of femur head and neck forcing screw 2 veutros and the centre position between the main nail inboard, the about 1cm of length.
Main nail 1 preferred titanium manufacturing in the near end of thighbone marrow, its proximal part adopts the wide fillet trapezium structure design in the inboard narrow outside, after main nail is squeezed near end of thighbone in marrow, can closely cooperate with the near end of thighbone pulp cavity, further strengthen the mechanical stability of unstability intertrochanteric fracture by the bone and the fulcrum of nail body.Have three side openings on the main nail 1 in the near end of thighbone marrow, be followed successively by forcing screw side opening 11, supporting screw side opening 12 and inter-locking screw side opening 13 from near-end to far-end, femur head and neck forcing screw 2 and bigelow's septum supporting screw 3 and distal locking screw 4 pass in above-mentioned three side openings respectively.Supporting screw side opening 12 allows bigelow's septum supporting screw 3 along main nail longitudinal oscillation in the marrow for oblong, and the bigelow's septum stump that fine setting bigelow's septum supporting screw 3 continues itself and head and neck offsets; Perhaps supporting screw side opening 12 be circular and its aperture, outside greater than medial aperture, present the diminishing from outside to inside horn mouth shape in a kind of aperture, among a small circle angle adjustment is with better fit contact bigelow's septum supporting screw 3 after being convenient to forcing screw and entering.Inter-locking screw side opening 13 is an oblong, and screw can be finished the multinomial or static(al) locking of power according to the degree of stability of fracture end under the guiding of special conductor.
Be provided with device for ejecting 32 in the 1/3 intersection 1.5cm scope in before the bigelow's septum supporting screw 3, can after supporting screw 3 is squeezed into, finish its with main nail between locking, anti-retaining is followed closely.
When operation is used, under the X-ray machine transmission, squeeze into and lead nail 1 in the near end of thighbone marrow to correct position, under assisting, seal wire screws in femur head and neck forcing screw 2 through forcing screw side opening 11, keep pressurization femur head and neck forcing screw 2 major axes orientations to become angle 135 degree ± 5 degree with main nail 1 axis in the near end of thighbone marrow, rotate femur head and neck forcing screw 2 to groove 22 simultaneously and be positioned at the screw veutro.Under guider is assisted, squeeze into bigelow's septum supporting screw 3 through supporting screw side opening 12, make bigelow's septum supporting screw 3 most advanced and sophisticated 21 and femur head and neck forcing screw 2 veutro grooves 22 tablings, after adjusting bigelow's septum supporting screw 3 and bigelow's septum stump sclerotin contacting fully, control device by rotation and draw device for ejecting, finish the locking between the main nail in supporting screw and the marrow, supporting screw side opening 12 outside horn mouths can be refused shutoff.Under guider is assisted, screw in inter-locking screw 4, thereby finish the multinomial or static(al) locking of power through inter-locking screw side opening 13.
Claims (9)
1. intertrochanteric fracture marrow inner fixing device, comprise with the near end of thighbone marrow in dissect main nail (1) in the near end of thighbone marrow adapt, pass the femur head and neck forcing screw (2) and the bigelow's septum distal locking screw (4) of main nail (1) in the near end of thighbone marrow, it is characterized in that also comprising and tilt to pass the main interior bigelow's septum supporting screw (3) of groove (22) of following closely (1) and being resisted against femur head and neck forcing screw (2) veutro in the near end of thighbone marrow, thereby make main nail (1) in the near end of thighbone marrow, femur head and neck forcing screw (2) and bigelow's septum supporting screw (3) constitute the triangle mechanics rock-steady structure.
2. intertrochanteric fracture marrow inner fixing device as claimed in claim 1 is characterized in that: the angle α in the near end of thighbone marrow between main nail (1) and the femur head and neck forcing screw (2) is 135 ± 5 degree; Angle β in bigelow's septum supporting screw (3) and the near end of thighbone marrow between the main nail (1) is 150 ± 5 degree.
3. intertrochanteric fracture marrow inner fixing device as claimed in claim 2 is characterized in that: the angle α in the near end of thighbone marrow between main nail (1) and the femur head and neck forcing screw (2) is 13 degree; Angle β in bigelow's septum supporting screw (3) and the near end of thighbone marrow between the main nail (1) is 150 degree.
4. intertrochanteric fracture marrow inner fixing device as claimed in claim 1, it is characterized in that: bigelow's septum supporting screw (3) is for cylindrical, it has the tip (31) of blunt round, and most advanced and sophisticated (31) are chimeric with groove (22), and most advanced and sophisticated (31) can slide in groove (22).
5. intertrochanteric fracture marrow inner fixing device as claimed in claim 4, it is characterized in that: described groove (22) is arranged on femur head and neck forcing screw (2) veutro, and be in the centre position between main nail (1) inboard in screw thread (21) near-end on the femur head and neck forcing screw (2) and the near end of thighbone marrow, the about 1cm of length.
6. as claim 1 or 3 described intertrochanteric fracture marrow inner fixing devices, it is characterized in that: have three side openings on the main nail (1) in the near end of thighbone marrow, be followed successively by forcing screw side opening (11), supporting screw side opening (12) and inter-locking screw side opening (13) from near-end to far-end.
7. intertrochanteric fracture marrow inner fixing device as claimed in claim 6 is characterized in that: supporting screw side opening (12) is an oblong; Perhaps supporting screw side opening (12) be circular and its aperture, outside greater than medial aperture, present the diminishing from outside to inside horn mouth shape in a kind of aperture.
8. intertrochanteric fracture marrow inner fixing device as claimed in claim 7 is characterized in that: be provided with device for ejecting (32) in the 1/3 intersection 1.5cm scope during bigelow's septum supporting screw (3) is preceding.
9. intertrochanteric fracture marrow inner fixing device as claimed in claim 1 or 2 is characterized in that: main nail (1) is by the titanium manufacturing in the near end of thighbone marrow, and its proximal part adopts the wide fillet trapezium structure in the inboard narrow outside.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2010201210216U CN201551384U (en) | 2010-03-02 | 2010-03-02 | Intramedullary fixation apparatus for intertrochanter fracture of femur |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2010201210216U CN201551384U (en) | 2010-03-02 | 2010-03-02 | Intramedullary fixation apparatus for intertrochanter fracture of femur |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN201551384U true CN201551384U (en) | 2010-08-18 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2010201210216U Expired - Fee Related CN201551384U (en) | 2010-03-02 | 2010-03-02 | Intramedullary fixation apparatus for intertrochanter fracture of femur |
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| CN (1) | CN201551384U (en) |
Cited By (12)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101912299A (en) * | 2010-09-03 | 2010-12-15 | 唐佩福 | Integrated intramedullary nail system for treating proximal femoral fracture |
| WO2013151501A1 (en) * | 2012-04-04 | 2013-10-10 | Kok Sun Khong | Surgical implant device, method and apparatus for implanting thereof |
| TWI465224B (en) * | 2011-11-15 | 2014-12-21 | ||
| WO2016112100A1 (en) * | 2015-01-09 | 2016-07-14 | Matsuda Dean | Apparatuses for femur correction |
| CN107223040A (en) * | 2014-05-09 | 2017-09-29 | 萨维奇医疗设计有限责任公司 | Medullary fixation device and system in hipbone and femoral fracture operation |
| CN107468324A (en) * | 2017-09-01 | 2017-12-15 | 成都大学附属医院 | A kind of near end of thighbone insertion type strengthens Medullary fixation device |
| CN110974385A (en) * | 2019-12-23 | 2020-04-10 | 首都医科大学附属北京潞河医院 | Intramedullary fixation auxiliary device for intertrochanteric fracture of femur |
| CN111374744A (en) * | 2020-04-16 | 2020-07-07 | 赵滨 | Intramedullary cavity inner side supporting structure suitable for strengthening proximal femoral fracture internal fixation |
| CN112704556A (en) * | 2020-12-22 | 2021-04-27 | 安阳市伊来达医疗器械有限公司 | Anti-sinking anti-rotation rectangular wedge-shaped intramedullary fixation device for orthopedics department |
| US11141203B2 (en) | 2015-07-06 | 2021-10-12 | Swemac Innovation Ab | Device for fixation of bone fragments |
| RU220242U1 (en) * | 2023-05-04 | 2023-09-05 | Общество С Ограниченной Ответственностью "Орто-Сув" | Device for osteosynthesis of the proximal femur |
| CN116746999A (en) * | 2023-06-08 | 2023-09-15 | 中国人民解放军总医院第六医学中心 | Proximal plate-shaped intramedullary nail for comminuted intertrochanteric fracture |
-
2010
- 2010-03-02 CN CN2010201210216U patent/CN201551384U/en not_active Expired - Fee Related
Cited By (16)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101912299A (en) * | 2010-09-03 | 2010-12-15 | 唐佩福 | Integrated intramedullary nail system for treating proximal femoral fracture |
| TWI465224B (en) * | 2011-11-15 | 2014-12-21 | ||
| WO2013151501A1 (en) * | 2012-04-04 | 2013-10-10 | Kok Sun Khong | Surgical implant device, method and apparatus for implanting thereof |
| US9668791B2 (en) * | 2012-04-04 | 2017-06-06 | Kok Sun Khong | Surgical implant device, method and apparatus for implanting thereof |
| CN107223040B (en) * | 2014-05-09 | 2020-11-24 | 萨维奇医疗设计有限责任公司 | Intramedullary fixation device and system for use in hip and femur fracture surgery |
| CN107223040A (en) * | 2014-05-09 | 2017-09-29 | 萨维奇医疗设计有限责任公司 | Medullary fixation device and system in hipbone and femoral fracture operation |
| WO2016112100A1 (en) * | 2015-01-09 | 2016-07-14 | Matsuda Dean | Apparatuses for femur correction |
| US10022166B2 (en) | 2015-01-09 | 2018-07-17 | Biomet Sports Medicine, Llc | Method and apparatuses for angular and rotational correction of the femur |
| US11141203B2 (en) | 2015-07-06 | 2021-10-12 | Swemac Innovation Ab | Device for fixation of bone fragments |
| CN107468324A (en) * | 2017-09-01 | 2017-12-15 | 成都大学附属医院 | A kind of near end of thighbone insertion type strengthens Medullary fixation device |
| CN110974385A (en) * | 2019-12-23 | 2020-04-10 | 首都医科大学附属北京潞河医院 | Intramedullary fixation auxiliary device for intertrochanteric fracture of femur |
| CN111374744A (en) * | 2020-04-16 | 2020-07-07 | 赵滨 | Intramedullary cavity inner side supporting structure suitable for strengthening proximal femoral fracture internal fixation |
| CN112704556A (en) * | 2020-12-22 | 2021-04-27 | 安阳市伊来达医疗器械有限公司 | Anti-sinking anti-rotation rectangular wedge-shaped intramedullary fixation device for orthopedics department |
| RU220242U1 (en) * | 2023-05-04 | 2023-09-05 | Общество С Ограниченной Ответственностью "Орто-Сув" | Device for osteosynthesis of the proximal femur |
| CN116746999A (en) * | 2023-06-08 | 2023-09-15 | 中国人民解放军总医院第六医学中心 | Proximal plate-shaped intramedullary nail for comminuted intertrochanteric fracture |
| CN116746999B (en) * | 2023-06-08 | 2024-03-05 | 中国人民解放军总医院第六医学中心 | Proximal plate-shaped intramedullary nail for comminuted intertrochanteric fracture |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20100818 Termination date: 20140302 |