CN201005773Y - Femoral bone tuberosity locking hook board internal fixation system - Google Patents
Femoral bone tuberosity locking hook board internal fixation system Download PDFInfo
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- CN201005773Y CN201005773Y CNU2007200343562U CN200720034356U CN201005773Y CN 201005773 Y CN201005773 Y CN 201005773Y CN U2007200343562 U CNU2007200343562 U CN U2007200343562U CN 200720034356 U CN200720034356 U CN 200720034356U CN 201005773 Y CN201005773 Y CN 201005773Y
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- screw
- hook plate
- femoral bone
- internal fixation
- bone tuberosity
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Abstract
The utility model relates to a fixing system of femur tuberosity locking hook plate, belonging to medical clinic bone surgery femur tuberosity fracture fixing tool, comprising a hook plate, a drawing screw, a press screw, a locking screw, and a pressurize fixing screw, wherein the hook plate is provided with a hook plate which one end is provided with a femur tuberosity hook, one end of the hook plate near the femur tuberosity hook is arranged with a screw hole mounted with the drawing screw, one side of the drawing screw is provided with a press screw hole mounted with a press screw, the hook plate is provided with a locking screw hole and a pressurize fixing screw hole respectively mounted with a locking screw and a pressurize fixing screw. There are 2-3 femur tuberosity hooks and 3 drawing screws. The drawing screw is hollow screw, which remote-end and near-end are respectively arranged with external screws. The locking screw hole and pressurize fixing screw on the hook plate can be arranged as combined screw hole which can be arranged 3-6 ones.
Description
Technical field
The utility model relates to a kind of femoral bone tuberosity locking hook plate internal fixation system, belong to clinical medicine Orthopeadic Surgery all kinds intertrochanteric fracture of the femur inner fixation surgical instrument.
Background technology
The sickness rate of intertrochanteric fracture of the femur prolongs along with people's life-span and rises gradually, operation and nonoperative mortality rate are respectively 0.83% and 3.6%, in order to alleviate fracture pain, promote patient's ambulation early, recover self care ability, reduce the complication and the mortality rate of long-term bed, operative treatment gradually becomes trend.The Therapeutic Method of intertrochanteric fracture is a lot, and pluses and minuses are respectively arranged.Existing internal fixation method mainly contains: internal fixation technology such as spininess internal fixation, compression hollow screw, exterior fixation bracket, gusset power, pressurization hip screw (DHS), Gamma nail.
1, spininess internal fixation: adopt the method for spininess internal fixation, its characteristics mainly contain that wound is slight, simple to operate, indication is wide.Single draw point internal fixation of using, gravity causes the downward shearing of femoral head and reaches greater trochanter through draw point, fracture end, because the greater trochanter place is a spongy bone, hold to draw point is not strong, when joint motion, fracture end fine motion, easily causes loosening, the displacement fracture of draw point, talipes varus in the hip joint takes place, even fracture delayed union, disunion, draw point may enter pelvic cavity simultaneously, damage pelvic cavity viscera or outwards withdraw from.
2, compression hollow screw: compression hollow screw mainly relies on the pulling force effect of nail head screw thread to reach and makes the fracture end pressurization, promote union of fracture.But for intertrochanteric fracture because greater trochanter outside relative narrower, the hold of nail tailing screw flight a little less than, and almost do not have the shearing resistance effect, mechanical strength is low, is prone to fracture site separation, displacement fracture, coxa vara, postoperative need be braked, and has lost the chance of early functional exercise.
3, exterior fixation bracket: the exterior fixation bracket mechanical strength is low, and displacement fracture easily takes place, and daily life is had some harmful effects, as the inconvenience of wearing the clothes, have a bath, and complication such as pin site infection, pin be loosening easily take place.
4, gusset: 135 °, 90 ° gussets are that AO school at first advocates usefulness, and its characteristics are an overall structure for its nail sword, and its torsional rotation force is better, and its sword is that the easily anti-folding of U-shaped section is trigonometric ratio and fixes simultaneously, can increase its intensity and stability.At present, the AO internal fixation handbook of new edition is still recommended to use.But gusset intensity is relatively low, and the fracture end pressurization is little, can not be used for some serious comminuted fracture.
5, dynamic hip screw (DHS): dynamic hip screw adopts and is slidingly connected, help the pressurization of fracture end power, the far-end steel plate is attached to lateral side of femur cortex, the tension band effect is arranged, mechanical strength is big, can obviously increase general stability, and the displacement of fracture face is few, but early functional exercise is applicable to various intertrochanteric fracture.The dynamic hip screw apparatus is a corollary apparatus, the technical operation relative complex, when if the fracture pulverizing is serious, its anti-rotation performance is poor, especially comparatively loose for senile patient's sclerotin, nail or screw cutting femoral head neck phenomenon often occurs moving back, cause the coxa vara deformity, can not use with the damaged patient of bone the femoral intertrochanteric tumor.
6, Gamma nail: the Gamma nail combines the advantage of dynamic hip screw and intramedullary pin, it is big that its centrality bed knife is learned intensity, antitorque commentaries on classics, good stability, the fracture end pressurization is more direct, but early functional exercise, belong to a kind of semi-closed operation, wound is little, go out insufficiency of blood, but the probability of fat embolism is big, and Gamma nail lower end stress is concentrated relatively, single interlocking forcing screw anti-rotation performance is poor, occurs moving back nail or screw cutting femoral head neck phenomenon sometimes.
Senile intertrochanteric fracture of the femur is one of clinical comparatively common fracture.Because of osteoporosis and fragility are big, cracked comparatively serious, poor stability.Clinical internal fixation system commonly used is difficult to reach strong fixing and guarantee early functional exercise at present, and complication is many, invalidity rate height, serious threat gerontal patient life and quality of life.
Old intertrochanteric fracture of the femur traditional treatment adopts on tibial tubercle or the condyle of femur more and draws, and bed rest time is long, and the patient merges diseases such as pulmonary insufficiency, malnutrition more.The long-term bed traction easily merges diseases such as hypostatic pneumonia, deep venous thrombosis of lower limbs, decubital ulcer, urinary tract infection, and mortality rate is higher.There is report to think that the mortality rate of old intertrochanteric fracture of the femur non-operative treatment group is higher 4.5 times than operative treatment group.So for the at present clinical open reduction internal fixation that adopt of this type of fracture, as internal fixation systems such as Richard nail-plate, Gamma nail, PFN more.Comparatively loose and be the stress concentration position because of old femoral bone tuberosity position sclerotin, postoperative fracture is shifted again, and to cause in the hip joint talipes varus incidence rate higher, and especially the osteoporosis companion unstable fracture postoperative incidence rate of failing is about 53%, has a strong impact on patients ' life quality.
Summary of the invention
The purpose of this utility model is to provide a kind of femoral bone tuberosity locking hook plate (lock hook plate, LHP) internal fixation system at above-mentioned weak point, overcome above-mentioned various internal fixation defective, dissect outward appearance and design at femoral bone tuberosity, this internal fixation system is fixed in the femur head and neck because of three lag screws, it is strong to control strength, and have tangible dispersive stress effect, prevent of the cutting of screw stress concentration the femur head and neck.Two femoral bone tuberosity hook resected femur greater trochanter, especially femoral greater trochanter comminuted fracture, the ideal that resets is fixing strong.The suitable tension band effect of lateral side of femur steel plate, effectively to anti-shearing and rotation stress, far-end locking screw and lag screw afterbody lock screw ensure the stability in the large of internal fixation system, prevent the coxa vara deformity that displacement fracture causes, help early functional exercise, prevent various complication.
Femoral bone tuberosity locking hook plate internal fixation system takes following scheme to realize: the femoral bone tuberosity locking hook plate internal fixation system structure comprises hook plate, lag screw, compression set screw, lock screw, pressurization hold-down screw.Hook plate has the hook plate body, is provided with the femoral bone tuberosity hook at hook plate body one end, and the femoral bone tuberosity hook is provided with 2～3.Be provided with the lag screw hole at the hook plate body near femoral bone tuberosity hook one end, lag screw is housed.One side is provided with the compression set screw hole in the lag screw hole, and the compression set screw is housed, and prevents that lag screw is loosening and withdraws from.On the hook plate body, be provided with screw hole and pressurization fixing screw hole, lock screw and pressurization hold-down screw are housed respectively.On the hook plate body, can be provided with the screw assemblies hole, comprise screw hole and pressurization fixing screw hole, lock screw and pressurization hold-down screw are housed respectively.On the hook plate body, be provided with the temporary fixed hole of reduction of the fracture Kirschner wire.Lag screw is provided with 3 pieces, is hollow screw.
Operation principle
Femoral bone tuberosity locking hook plate internal fixation system is fixed in the femur head and neck because of three lag screws, has tangible dispersive stress effect, prevent of the cutting of screw stress concentration to the femur head and neck, two femoral bone tuberosity hook resected femur greater trochanters effectively prevent the interior talipes varus of hip joint that displacement fracture causes to anti-shearing and rotation stress.The locking device of each screw ensures that the stability of fracture internal fixation helps early functional exercise, prevents various complication.
Femoral bone tuberosity locking hook plate (lock hook plate, LHP) internal fixation system, reasonable in design, compact conformation is dissected outward appearance and is designed at femoral bone tuberosity, can overcome the various inner fixation surgical instrument defectives of present intertrochanteric fracture of the femur.This internal fixation system is fixed in the femur head and neck because of three lag screws, and it is strong to control strength, and has tangible dispersive stress effect, prevents the cutting of screw stress concentration to the femur head and neck.Two femoral bone tuberosity hook resected femur greater trochanter, especially femoral greater trochanter comminuted fracture, the ideal that resets is fixing strong.The suitable tension band effect of lateral side of femur steel plate, effectively to anti-shearing and rotation stress, far-end locking screw and lag screw afterbody compression set screw ensure the stability in the large of internal fixation system, prevent the interior talipes varus of hip joint that displacement fracture causes, help early functional exercise, prevent various complication.Can overcome clinical various internal fixation defectives at present.
Femoral bone tuberosity locking hook plate internal fixation system mainly is applicable to clinical medicine Orthopeadic Surgery all kinds intertrochanteric fracture of the femur inner fixation surgical instrument, is specially adapted to the operation internal fixation of senile intertrochanteric fracture of the femur.
Description of drawings
The utility model is described in further detail below with reference to accompanying drawing.
Fig. 1 is the femoral bone tuberosity locking hook plate internal fixation system structural representation.
Fig. 2 is that the femoral bone tuberosity locking hook plate internal fixation system left view launches sketch map.
Fig. 3 is the hook plate sketch map of femoral bone tuberosity locking hook plate internal fixation system.
Fig. 4 is that the hook plate left view of femoral bone tuberosity locking hook plate internal fixation system launches sketch map.
The specific embodiment
With reference to accompanying drawing 1～4, the femoral bone tuberosity locking hook plate internal fixation system structure comprises hook plate, lag screw 5, compression set screw 4, lock screw 2, pressurization hold-down screw 3.Hook plate has hook plate body 1, is provided with femoral bone tuberosity hook 6 at hook plate body 1 one ends, and femoral bone tuberosity hook 6 is provided with 2～3.Be provided with lag screw hole 1-4 at hook plate body 1 near femoral bone tuberosity hook 6 one ends, lag screw 5 is housed.1-4 one side is provided with compression set screw hole 1-3 in the lag screw hole, and compression set screw 4 is housed, and prevents that lag screw 5 is loosening and withdraws from.On hook plate body 1, be provided with screw hole 1-2 and pressurization fixing screw hole 1-1, lock screw 2 and pressurization hold-down screw 3 are housed respectively.Screw hole 1-2 that establishes on hook plate body 1 and pressurization fixing screw hole 1-1 can be set to the screw assemblies hole, and the screw assemblies hole is provided with 3～6.On hook plate body 1, be provided with the temporary fixed hole 8 of reduction of the fracture Kirschner wire.Lag screw 5 is provided with 3 pieces, and lag screw 5 is a hollow screw, and lag screw 5 far-ends, near-end are respectively arranged with external screw thread 7.
Claims (6)
1. a femoral bone tuberosity locking hook plate internal fixation system is characterized in that structure comprises hook plate, lag screw, compression set screw, lock screw, pressurization hold-down screw; Hook plate has the hook plate body, be provided with the femoral bone tuberosity hook at hook plate body one end, be provided with the lag screw hole at the hook plate body near femoral bone tuberosity hook one end, lag screw is housed, one side is provided with the compression set screw hole in the lag screw hole, the compression set screw is housed, on the hook plate body, is provided with screw hole and pressurization fixing screw hole, lock screw and pressurization hold-down screw are housed respectively.
2. femoral bone tuberosity locking hook plate internal fixation system according to claim 1 is characterized in that the femoral bone tuberosity hook is provided with 2～3.
3. femoral bone tuberosity locking hook plate internal fixation system according to claim 1 is characterized in that lag screw is provided with 3 pieces.
4. femoral bone tuberosity locking hook plate internal fixation system according to claim 1 is characterized in that lag screw is a hollow screw, and lag screw far-end, near-end are respectively arranged with external screw thread.
5. femoral bone tuberosity locking hook plate internal fixation system according to claim 1 is characterized in that screw hole and the pressurization fixing screw hole established can be set to the screw assemblies hole on the hook plate body, the screw assemblies hole is provided with 3～6.
6. femoral bone tuberosity locking hook plate internal fixation system according to claim 1 is characterized in that being provided with the temporary fixed hole of reduction of the fracture Kirschner wire on the hook plate body.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNU2007200343562U CN201005773Y (en) | 2007-02-07 | 2007-02-07 | Femoral bone tuberosity locking hook board internal fixation system |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNU2007200343562U CN201005773Y (en) | 2007-02-07 | 2007-02-07 | Femoral bone tuberosity locking hook board internal fixation system |
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| CN201005773Y true CN201005773Y (en) | 2008-01-16 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CNU2007200343562U Expired - Fee Related CN201005773Y (en) | 2007-02-07 | 2007-02-07 | Femoral bone tuberosity locking hook board internal fixation system |
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| CN (1) | CN201005773Y (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102247204A (en) * | 2011-08-28 | 2011-11-23 | 泰州市中兴医械科技有限公司 | Minimally invasive proximal femoral limited-contact and locking double safety compound bone joining plate |
| CN102319109A (en) * | 2011-08-28 | 2012-01-18 | 泰州市中兴医械科技有限公司 | Minimally invasive tuberositas comminuted fracture back side pressurizing type fixation bone fracture plate |
| CN102319107A (en) * | 2011-08-28 | 2012-01-18 | 泰州市中兴医械科技有限公司 | Minimally invasive femoral neck comminuted fracture back side pressurizing type fixation bone fracture plate |
-
2007
- 2007-02-07 CN CNU2007200343562U patent/CN201005773Y/en not_active Expired - Fee Related
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102247204A (en) * | 2011-08-28 | 2011-11-23 | 泰州市中兴医械科技有限公司 | Minimally invasive proximal femoral limited-contact and locking double safety compound bone joining plate |
| CN102319109A (en) * | 2011-08-28 | 2012-01-18 | 泰州市中兴医械科技有限公司 | Minimally invasive tuberositas comminuted fracture back side pressurizing type fixation bone fracture plate |
| CN102319107A (en) * | 2011-08-28 | 2012-01-18 | 泰州市中兴医械科技有限公司 | Minimally invasive femoral neck comminuted fracture back side pressurizing type fixation bone fracture plate |
| CN102319107B (en) * | 2011-08-28 | 2012-11-21 | 泰州市中兴医械科技有限公司 | Minimally invasive femoral neck comminuted fracture back side pressurizing type fixation bone fracture plate |
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| 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 | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20080116 Termination date: 20130207 |