CN201157399Y - In vitro positioning locking type hollow nail-plate collum femoris internal fixation system - Google Patents
In vitro positioning locking type hollow nail-plate collum femoris internal fixation system Download PDFInfo
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- CN201157399Y CN201157399Y CNU200720187380XU CN200720187380U CN201157399Y CN 201157399 Y CN201157399 Y CN 201157399Y CN U200720187380X U CNU200720187380X U CN U200720187380XU CN 200720187380 U CN200720187380 U CN 200720187380U CN 201157399 Y CN201157399 Y CN 201157399Y
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- hollow nail
- femur
- lockplate
- fixation system
- internal fixation
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Abstract
The utility model relates to an extracorporeal position-locking internally-fixing system of hollow nail plates for collum femoris, which comprises an extracorporeal positioner and a lockplate, wherein, the extracorporeal positioner mainly comprises a connecting bar (3), a body surface positioning pin (1), a lateral-position positioning pin (2) and a guider (4). The lengthwise section of the lockplate comprises a smooth part and a curved part, and the cross section of the lockplate presents an arc shape, the smooth part is provided with locking holes for hollow nails (52) (53), the curved part is provided with a locking hole for hollow nails (51) and a locking hole for guide pins (54), and all the locking pins are provided with female screw threads. The extracorporeal position-locking internally-fixing system of hollow nail plates for collum femoris is suitable for the internally-fixing operation and the internally-fixing system of collum femoris and intertrochanteric fractures and can have the effects of simple and accurate operational positioning, rapidness, satisfied and reliable fixing.
Description
Affiliated technical field
The neck of femur internal fixation system that this utility model relates to medical science bone surgery industry is particularly related to the hollow nail-plate neck of femur of the external position and lock type internal fixation system that is applied to fracture of femoral neck, intertrochanteric fracture of the femur operation.
Technical background
At present, in the middle of the operation method of treatment fracture of femoral neck, femoral head prosthesis, hip prosthesis displacement are arranged; The hollow nail internal fixation, three wing nail internal fixation, all multi-methods such as PFN Pinning.And for the patient of inapplicable prosthetic replacements such as younger patient and older body constitution difference, existing many clinically three pieces of hollow nail internal fixations that extensively adopt.And in the middle of hollow nail operation, require its last fixed effect to be: it is the center with the neck of femur that three pieces of hollow nails are isosceles triangle, and ailhead is and slightly converges trend, reaches the purpose of fixation of fractures from femoral bone tuberosity down to femoral head.And in the middle of actual operation, only can locate by patient's experience and the guide pin of wearing repeatedly as the masterplate of reference, finally also can only accomplish unlikely to realize near above-mentioned requirements the ideal fixed model of hollow nail as far as possible.Moreover in the middle of operation, need every hollow nail and guide pin are had an X-rayed the location respectively repeatedly, almost there are not three pieces of possibilities that guide pin is once successful, certainly will prolong operating time, increase hemorrhage and risk postoperative infection, increase the weight of wound, and because three pieces of hollow nail difference independent stationary fracture, postoperative is not very firm, influences surgical effect thereby especially there is osteoporotic patient can not carry out early stage limb activity.
Summary of the invention
The purpose of this utility model is, overcome when doing the hollow nail operation at present, the guide pin of three pieces of hollow nails all is rule of thumb, repeatedly the perspective under squeeze into, even if squeeze into, the position also may not be satisfied with and fixed effect bad, the postoperative hollow nail such as deviates from easily at shortcoming, the hollow nail-plate neck of femur of a kind of external position and lock type internal fixation system is provided, makes it reduce pivot operation, and the postoperative good fixing effect.
The purpose of this utility model and to solve its technical problem be to adopt following technical scheme to realize.The hollow nail-plate neck of femur of a kind of external position and lock type internal fixation system according to the utility model proposes comprises external localizer and lockplate, and wherein external localizer mainly comprises: connecting rod; The body surface positioning needle is connected and composed by two parallel barred body two ends, and is vertically positioned on the connecting rod by sliding nut; Side position positioning needle is the barred body of vertical fixing on connecting rod; And guider, being hollow pipe, an end opening is fixedlyed connected with the far-end of side position positioning needle, and is positioned on the connecting rod by sliding nut, and guider and side position positioning needle are an angle; The longitudinal section of lockplate comprises a partes glabra and a bending section, and its cross section is curved, and partes glabra is provided with the hollow nail lock hole, and bending section is provided with hollow nail lock hole and guide pin lock hole, and each lock hole all has female thread.
The purpose of this utility model and solve its technical problem and can also be further achieved by the following technical measures.
The hollow nail-plate neck of femur of aforesaid external position and lock type internal fixation system also is provided with two or more femoral shaft lock holes on the described lockplate, be positioned on the partes glabra, the below of hollow nail lock hole.
The hollow nail-plate neck of femur of aforesaid external position and lock type internal fixation system, the bending section of described lockplate is 25 ° of radians that radius is 5cm, and the cross section of lockplate is 60 ° of radians that radius is 1.9cm.
The hollow nail-plate neck of femur of aforesaid external position and lock type internal fixation system, the internal diameter of described guide pin lock hole is 0.7cm, hollow nail lock hole internal diameter is 0.8cm.
The hollow nail-plate neck of femur of aforesaid external position and lock type internal fixation system, the angle of described guide pin lock hole female thread direction and lockplate partes glabra is 135 °; The hollow nail lock hole is isosceles triangle and distributes, and the female thread direction is slightly cohesion to the guide pin lock hole.
The hollow nail-plate neck of femur of aforesaid external position and lock type internal fixation system, described body surface positioning needle, side position positioning needle, connecting rod and localizer are in same plane.
The hollow nail-plate neck of femur of aforesaid external position and lock type internal fixation system), two barred body cross-sectional diameters of described body surface positioning needle are 3mm, and its spacing is from being 1cm, and the cross-sectional diameter of described side position positioning needle is 3mm.
The hollow nail-plate neck of femur of aforesaid external position and lock type internal fixation system, the internal diameter of described guider is 2.5mm.
The hollow nail-plate neck of femur of aforesaid external position and lock type internal fixation system, the angle of described guider and side position positioning needle is 15 °.
The hollow nail-plate neck of femur of aforesaid external position and lock type internal fixation system, described external localizer and lockplate are metal and make.
This utility model mainly by two positioning needles on the external localizer carry out respectively neck of femur center, external location guide pin just, side position location, one piece of guide pin that is positioned at the neck of femur center is squeezed in the location more accurately.Utilize position and the direction of this piece guide pin by the directly definite three pieces of hollow nails of hollow nail lockplate navigation system again, three pieces of hollow nails can accurately be squeezed into ideal direction and position.And lockplate is one with three pieces of hollow nail locks after being screwed into locking-typed hollow nail, common fixing fracture.At last squeeze into locking nail lockplate is fixed on the tension side of proximal femur, make it fixing more stable at the lock hole of lockplate tail end.
This practical beneficial effect is:
1,, solved the problem that in the past can only free-handly squeeze into location guide pin and continuous pc guide pin position and direction, the guide pin of location neck of femur femoral head centrage that can be more simple and efficient by external localizer.
2, utilize lockplate and aforementioned guide pin directly to determine the accurate position of three pieces of hollow nails, the direction by hollow nail lock hole on the lockplate guarantees three pieces of hollow nail travelings and neck of femur direction of travel basically identical and to the slightly cohesive perfect condition in neck of femur axis.
3, shorten operating time, reduced bone wound and hemorrhage, reduced the postoperative infection probability; Avoided threading a needle repeatedly, reduced destruction, reduced the possibility of femur head necrosis femoral head blood fortune; Avoided perspective repeatedly, reduced of the infringement of x line doctor and patient.
4, lockplate is locked as one with three pieces of hollow nails, and can be with the sclerotin tension side under the tuberosity of being locked in of far-end, thereby make internal fixation more firm, the cohesion trend of three pieces of hollow nails and nail tail locking device can be avoided owing to the hollow nail that reasons such as osteoporosis cause is deviate from, postoperative can carry out early stage limb function exercise, reaches better postoperative effect.
Description of drawings
Fig. 1 is the structural representation of external localizer of the present utility model.
Fig. 2 is that the master of lockplate of the present utility model looks sketch map.
Fig. 3 is the longitudinal section sketch map of lockplate of the present utility model.
Fig. 4 is the cross sectional representation of lockplate of the present utility model.
The specific embodiment
For further setting forth this utility model is to reach technological means and the effect that predetermined purpose is taked, below in conjunction with accompanying drawing and preferred embodiment, to according to its specific embodiment of the hollow nail-plate neck of femur of external position and lock type internal fixation system, structure, feature and the effect thereof that the utility model proposes, describe in detail as after.
See also Fig. 1, shown in Figure 2, this utility model is made of external localizer and lockplate.
See also shown in Figure 1ly, external localizer mainly is made of neck of femur body surface positioning needle 1, femur side position positioning needle 2, connecting rod 3 and guider 4.Wherein body surface positioning needle 1 is two metal bars parallel, phase mutual edge distance 1cm, cross-sectional diameter 3mm, two ends connect as one, link to each other with connecting rod 3 by sliding nut 11, both fixed angle are vertical 90 degree, and can pass through sliding nut 11 positions of up-down adjustment positioning needle on connecting rod.Side position positioning needle 2 cross sections are the metal bar of diameter 3mm, and vertical fixing is on connecting rod 3.Guider 4 is the hollow pipe of 2.5mm for internal diameter, one end opening 41 is fixedlyed connected with the far-end of side position positioning needle, other end opening 42 is gone into the pin mouth for guide pin, guider 4 links to each other with connecting rod 3 by sliding nut 43, by the angle of sliding nut 43 adjustable side position positioning needles 2 with guider 4, preferable, side position positioning needle 2 and 4 angles of guider are preset as 15 degree, be the top rake of average neck of femur, can regulate as the case may be in actual use.Body surface positioning needle 1, side position positioning needle 2, guider 4 and connecting rod 3 are in same plane.
See also shown in Figure 2ly, mainly be provided with on the lockplate: hollow nail lock hole 51,52,53, guide pin lock hole 54 and two or more femoral shaft lock holes 55.See also shown in Figure 3, the longitudinal section of lockplate comprises a partes glabra and a bending section, bending section is 25 ° of radians (angle β) that radius is 5cm, hollow nail lock hole 52,53 and femoral shaft lock hole 55 are positioned on its partes glabra, and hollow nail lock hole 51 is positioned on its bending section with guide pin lock hole 54.See also shown in Figure 4ly, the cross section of lockplate is 60 ° of radians (angle γ) that radius is 1.9cm, to fit with femoral greater trochanter.Guide pin lock hole 54 is the tapped lock hole of internal diameter 0.7cm, and the angle α of its female thread direction and lockplate partes glabra is 135 degree (collodiaphyseal angle).Hollow nail lock hole 51,52,53 is the tapped lock hole of internal diameter 0.8cm, and hollow nail lock hole 51,52,53 is isosceles triangle and distributes, and the female thread direction is slightly cohesion to guide pin lock hole 54.Femoral shaft lock hole 55 is for being fixed on lockplate the lock hole on the femoral shaft.
During use, patient's horizontal position (but perhaps fluoroscopic table) on orthopedic traction bed, the trouble limb is got the neutral position reduction by continuous traction, and perspective sees that the neck of femur under the pure position is roughly located under having an X-rayed with Kirschner wire in the satisfied back of closed reduction, the femoral shaft centrage body surface that the body surface of femoral head centrage is walked under line (being defined as markings A) and the pure side position is walked line (being defined as markings B) and used the marker pen labelling.Sterilization, drape.Squeeze into guide pin down with external localizer location: hand-held connecting rod 3, guider opening 41 is remained on the markings B, adjusting body surface positioning needle 1 makes itself and markings A overlapping.Do 1cm stringer otch at opening 41 place's skins, opening 41 is butted on the cortical bone has an X-rayed, the perspective normotopia is adjusted body surface positioning needle 1, two metal bars of body surface positioning needle 1 are overlapping to be a straight line and consistent with the traveling of neck of femur axis, perspective side position and to adjust side position positioning needle 2 consistent with the femoral shaft axis, can squeeze into diameter 2.2mm guide pin this moment from opening 42, and its guide pin traveling enters femoral head in neck of femur, femoral head centrage.If demonstration guide pin traveling of side position and neck of femur axis direction of travel are inconsistent, then according to circumstances, adjust the angle of 4 of side position positioning needle 2 and guiders, finally finish squeezing into of location guide pin.
Lockplate guide pin lock hole 54 places are screwed in internal diameter to be the guider drill bushing of 2.5mm and to tighten, the guider drill bushing is inserted in the above-mentioned guide pin of having squeezed into together with lockplate, and lockplate placed along the femur direction, hollow nail lock hole on the lockplate 51,52,53 is screwed into the drill bushing guider, its direction promptly is locked into consistent with the neck of femur direction of travel and is that the center is slightly cohesion with the guide pin, squeeze into three pieces of guide pins respectively along the drill bushing guider, but measure in advance according to the x mating plate before the guide pin length art.Perspective is seen the position satisfaction guider of can back-outing once more, along the guide pin reaming, and is screwed into the locking hollow nail along the guide pin direction with core drill, and the hollow nail tail is locked on the lockplate.If fracture of femoral neck has bigger gap, can be screwed into common hollow nail by guide pin lock hole 54 in advance and roll over the end pressurization, then can roll over the end pressurization for small folding splaying by the pitch difference of screw thread on the bar of locking nail and nail tail locking screw thread.Be screwed into the fixedly locked plate of 2-3 piece of locking nail (saturating one-sided cortical bone gets final product) in femoral bone tuberosity below tension side along femoral shaft lock hole 55, pull out guide pin, the internal fixation end of operation.
The above, it only is preferred embodiment of the present utility model, be not that this utility model is done any pro forma restriction, though this utility model discloses as above with preferred embodiment, yet be not in order to limit this utility model, any those skilled in the art, in not breaking away from the technical solutions of the utility model scope, when the technology contents that can utilize above-mentioned announcement is made a little change or is modified to the equivalent embodiment of equivalent variations, in every case be the content that does not break away from technical solutions of the utility model, according to technical spirit of the present utility model to any simple modification that above embodiment did, equivalent variations and modification all still belong in the scope of technical solutions of the utility model.
Claims (10)
1. the hollow nail-plate neck of femur of an external position and lock type internal fixation system is characterized in that comprising external localizer and lockplate, wherein
External localizer mainly comprises:
Connecting rod (3);
Body surface positioning needle (1) is connected and composed by two parallel barred body two ends, and is vertically positioned on the connecting rod (3) by sliding nut (11);
Side position positioning needle (2) is the barred body of vertical fixing on connecting rod (3); And
Guider (4) is hollow pipe, and an end opening (41) is fixedlyed connected with the far-end of side position positioning needle (2), and is positioned on the connecting rod (3) by sliding nut (43), and guider (4) is an angle with side position positioning needle (2);
The longitudinal section of lockplate comprises a partes glabra and a bending section, and its cross section is curved, and partes glabra is provided with hollow nail lock hole (52) and (53), and bending section is provided with hollow nail lock hole (51) and guide pin lock hole (54), and each lock hole all has female thread.
2. the hollow nail-plate neck of femur of external position and lock type according to claim 1 internal fixation system, it is characterized in that also being provided with on the described lockplate two or more femoral shaft lock holes (55), be positioned on the partes glabra, the below of hollow nail lock hole (52), (53).
3. the hollow nail-plate neck of femur of external position and lock type according to claim 1 internal fixation system is characterized in that the bending section of described lockplate is 25 ° of radians that radius is 5cm, and the cross section of lockplate is 60 ° of radians that radius is 1.9cm.
4. the hollow nail-plate neck of femur of external position and lock type according to claim 1 internal fixation system, the internal diameter that it is characterized in that described guide pin lock hole (54) is 0.7cm, hollow nail lock hole (51), (52), (53) internal diameter are 0.8cm.
5. the hollow nail-plate neck of femur of external position and lock type according to claim 1 internal fixation system, the angle that it is characterized in that described guide pin lock hole (54) female thread direction and lockplate partes glabra is 135 °; Hollow nail lock hole (51), (52), (53) are isosceles triangle and distribute, and the female thread direction is slightly cohesion to guide pin lock hole (54).
6. the hollow nail-plate neck of femur of external position and lock type according to claim 1 internal fixation system is characterized in that described body surface positioning needle (1), side position positioning needle (2), connecting rod (3) and localizer (4) are in same plane.
7. the hollow nail-plate neck of femur of external position and lock type according to claim 1 internal fixation system, two barred body cross-sectional diameters that it is characterized in that described body surface positioning needle (1) are 3mm, its spacing is from being 1cm, and the cross-sectional diameter of described side position positioning needle (2) is 3mm.
8. the hollow nail-plate neck of femur of external position and lock type according to claim 1 internal fixation system, the internal diameter that it is characterized in that described guider (4) is 2.5mm.
9. the hollow nail-plate neck of femur of external position and lock type according to claim 1 internal fixation system is characterized in that the described guider (4) and the angle of side position positioning needle (2) are 15 °.
10. according to the hollow nail-plate neck of femur of the described external position and lock type of the arbitrary claim of claim 1-9 internal fixation system, it is characterized in that described external localizer and lockplate are metal and make.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNU200720187380XU CN201157399Y (en) | 2007-12-24 | 2007-12-24 | In vitro positioning locking type hollow nail-plate collum femoris internal fixation system |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNU200720187380XU CN201157399Y (en) | 2007-12-24 | 2007-12-24 | In vitro positioning locking type hollow nail-plate collum femoris internal fixation system |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN201157399Y true CN201157399Y (en) | 2008-12-03 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CNU200720187380XU Expired - Fee Related CN201157399Y (en) | 2007-12-24 | 2007-12-24 | In vitro positioning locking type hollow nail-plate collum femoris internal fixation system |
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| Country | Link |
|---|---|
| CN (1) | CN201157399Y (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106618720A (en) * | 2017-01-11 | 2017-05-10 | 海口市人民医院 | Vertical adjustable fixed point malposition distance guide needle collimation hollow screw fixation minimally invasive device |
| CN107669325A (en) * | 2017-10-25 | 2018-02-09 | 邓婉坤 | A kind of femoral interlocking nail guide pin alignment system and its application method |
-
2007
- 2007-12-24 CN CNU200720187380XU patent/CN201157399Y/en not_active Expired - Fee Related
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106618720A (en) * | 2017-01-11 | 2017-05-10 | 海口市人民医院 | Vertical adjustable fixed point malposition distance guide needle collimation hollow screw fixation minimally invasive device |
| CN106618720B (en) * | 2017-01-11 | 2023-05-05 | 海口市人民医院 | Vertical adjustable fixed-point offset guide needle aiming hollow nail fixing minimally invasive device |
| CN107669325A (en) * | 2017-10-25 | 2018-02-09 | 邓婉坤 | A kind of femoral interlocking nail guide pin alignment system and its application method |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C17 | Cessation of patent right | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20081203 Termination date: 20111224 |