CN102525690A - Improved artificial femoral stem and nail implanting guide frame thereof - Google Patents
Improved artificial femoral stem and nail implanting guide frame thereof Download PDFInfo
- Publication number
- CN102525690A CN102525690A CN2012100113231A CN201210011323A CN102525690A CN 102525690 A CN102525690 A CN 102525690A CN 2012100113231 A CN2012100113231 A CN 2012100113231A CN 201210011323 A CN201210011323 A CN 201210011323A CN 102525690 A CN102525690 A CN 102525690A
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- femur
- axis
- femoral shaft
- femoral
- screw hole
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Classifications
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- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61F—FILTERS IMPLANTABLE INTO BLOOD VESSELS; PROSTHESES; DEVICES PROVIDING PATENCY TO, OR PREVENTING COLLAPSING OF, TUBULAR STRUCTURES OF THE BODY, e.g. STENTS; ORTHOPAEDIC, NURSING OR CONTRACEPTIVE DEVICES; FOMENTATION; TREATMENT OR PROTECTION OF EYES OR EARS; BANDAGES, DRESSINGS OR ABSORBENT PADS; FIRST-AID KITS
- A61F2/00—Filters implantable into blood vessels; Prostheses, i.e. artificial substitutes or replacements for parts of the body; Appliances for connecting them with the body; Devices providing patency to, or preventing collapsing of, tubular structures of the body, e.g. stents
- A61F2/02—Prostheses implantable into the body
- A61F2/30—Joints
- A61F2/32—Joints for the hip
- A61F2/36—Femoral heads ; Femoral endoprostheses
-
- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61F—FILTERS IMPLANTABLE INTO BLOOD VESSELS; PROSTHESES; DEVICES PROVIDING PATENCY TO, OR PREVENTING COLLAPSING OF, TUBULAR STRUCTURES OF THE BODY, e.g. STENTS; ORTHOPAEDIC, NURSING OR CONTRACEPTIVE DEVICES; FOMENTATION; TREATMENT OR PROTECTION OF EYES OR EARS; BANDAGES, DRESSINGS OR ABSORBENT PADS; FIRST-AID KITS
- A61F2/00—Filters implantable into blood vessels; Prostheses, i.e. artificial substitutes or replacements for parts of the body; Appliances for connecting them with the body; Devices providing patency to, or preventing collapsing of, tubular structures of the body, e.g. stents
- A61F2/02—Prostheses implantable into the body
- A61F2/30—Joints
- A61F2002/30001—Additional features of subject-matter classified in A61F2/28, A61F2/30 and subgroups thereof
Abstract
The invention relates to an improved artificial femoral stem. The outer wall of the near end of a femoral shaft (1) of the artificial femoral stem is provided with three screw holes (1-3), wherein two screw holes (1-3) are positioned in a big tuberosity area (8-2) corresponding to a human femora (8) in the femoral shaft (1); and the other screw hole (1-3) is positioned on the middle part of a small tuberosity area (8-1) corresponding to the human femora (8) in the femoral shaft (1). The invention also relates to a nail implanting guide frame for implementing a comminuted fracture surgery between femoral tuberosities by using the artificial femoral stem. The nail implanting guide frame consists of a positioning arm (3), a positioning rod (7), an arc plate (4) arranged below the positioning arm (3) and a guide cylinder (5) which is arranged on the arc plate (4) and corresponds to the screw hole (1-3). The invention can be applied to surgeries of hip joint fracture and comminuted fracture between the femoral tuberosities, and improves the quality of the hip joint replacement surgery.
Description
Technical field
The present invention relates to a kind of inner fixing device of human body, be specifically related to a kind of fixture of human femoral head.
Background technology
The old people is because osteoporosis, falls or when directly impacted by external force, near end of thighbone is easy to fracture, and shows as intertrochanteric fracture of the femur usually.Along with the appearance of population structure aging, the case of intertrochanteric fracture of the femur is more and more among the old people.The common Therapeutic Method of intertrochanteric fracture of the femur has DHS (dynamic hip screw), PFN (PFN) and hip replacement etc.; Wherein, DHS is applicable to stable fracture usually, and PFN is applicable to unstable fracture and comminuted fracture usually, and hip replacement then is to adopt artificial femur handle to substitute original femur head and neck; Be applicable to unstable fracture, have stable rapidly pipe joint, the fast advantage of post-operative recovery.Wherein, PFN mainly is made up of small one and large one tapping screw of main nail and two pieces; Wherein main nail axially inserting in the medullary cavity from trochiterian top along femur, two pieces of tapping screws arrive in the femoral head body along the main nail Kong Bingjing neck of femur of following closely on the near-end of axially passing of neck of femur from the femur outer wall.PFN has good therapeutic effect to the unstable fracture of pulverizing; But, for the serious comminuted fracture in tuberosity position, the situation that especially fracture can't closed reduction;, main nail can't confirm that the fixed effect of bone piece is not good when therefore using PFN separately because entering to follow closely the position.Adopt artificial hip joint replacing then can only replace the femoral head footpath, the fixing bone piece of fracture, therefore use also can't solve the serious comminuted fracture problem of tuberosity part separately.
Summary of the invention
The technical problem that the present invention will solve provides a kind of modified model artificial femur handle, and this artificial femur handle can be used for hip fracture and the operation of femoral intertrochanteric syntripsis, improves the stability of hip joint.
The technical scheme that the present invention solves the problems of the technologies described above is:
A kind of modified model artificial femur handle; Have an artificial femur handle, the edge of the femoral shaft upper surface of this worker's femoral stem is provided with acclivitous neck of femur, and the center is provided with and the co-axial screwed hole of femoral shaft; It is characterized in that; The outer wall of the near-end of the femoral shaft of said artificial femur handle is provided with three screw holes, wherein
Two screw holes are positioned on the femoral shaft greater trochanter zone corresponding to human femur under loading; And be positioned at both sides through the femoral shaft vertical section of neck of femur and femoral shaft axis; Wherein, Being positioned near the axis of the screw hole of little tuberosity zone one side of human femur under loading and the angle in described vertical section is 8～12 °, and the axis and the angle in described vertical section that are positioned at the screw hole of opposite side are 40～50 °;
Screw hole is positioned on the femoral shaft middle part corresponding to the little tuberosity zone of human femur under loading, and its axis is 40～50 ° with angle through the femoral shaft vertical section of neck of femur and femoral shaft axis.
A kind of modified model artificial femur handle of the present invention; Wherein, Said being arranged on the femoral shaft corresponding to two regional screw holes of the greater trochanter of human femur under loading; Being positioned near the axis of the screw hole of little tuberosity zone one side of human femur under loading and the angle in described vertical section is 10 °, and the axis and the angle in described vertical section that are positioned at the screw hole of opposite side are 45 °;
A kind of modified model artificial femur handle of the present invention; Behind described artificial femur handle implant into body femur; The femoral shaft near-end generally is positioned at the below of the end face in greater trochanter district, at this moment, and in order the greater trochanter regional fracture bone piece of femoral shaft near-end top to be fixed on the femoral shaft; The said axis that is positioned on the femoral shaft corresponding to two screw holes in the greater trochanter zone of human femur under loading tilts to the near-end of the femoral shaft of artificial femur handle, and forms 15 ° angle with the cross section of femoral shaft.
What another technical problem to be solved by this invention provided the operation of capable femoral intertrochanteric syntripsis plants the nail leading truck, and to improve the quality of hip replacement, its technical scheme is described below:
A kind of use the operation of the capable femoral intertrochanteric syntripsis of above-mentioned artificial femur handle plant the nail leading truck, it is characterized in that this is planted the nail leading truck and is made up of registration arm, locating rod, arc and three guide cylinders, wherein,
Described registration arm is arc, and the one of which head is provided with first locating hole that the neck of femur with said artificial femur handle is complementary, and the middle part is provided with second locating hole in the corresponding position that is positioned at screwed hole set on the said artificial femur handle;
The higher authorities of described locating rod are located in said second locating hole, following be provided with said artificial femur handle on the external screw thread that is complementary of set screwed hole;
The other end of described arc and said registration arm fuses;
Described three guide cylinders are located on the said arc, and axis separately respectively with artificial femur handle on the axis conllinear of a set screw hole.
In order to reduce the width of said arc, to reach the purpose of weight reduction and economical with materials, described planting on the arc of following closely leading truck extended upward two and gone up extensions, is extended with a lower extension downwards; In described three guide cylinders; Two axis are located at said going up on the extension respectively with guide cylinder corresponding to the axis conllinear of two screw holes in the greater trochanter zone of human femur under loading respectively, and axis is located on the said lower extension with guide cylinder corresponding to the axis conllinear of the screw hole at the middle part in the little tuberosity zone of human femur under loading.
Artificial femur handle of the present invention improves acquisition on the basis of existing manual femoral stem; Though being the near-end of femoral shaft and the greater trochanter zone and the little tuberosity zone of human femur under loading, its improvement sets up three screw holes; But utilize screw can the bone piece of fracture be fixed on the artificial femur handle, and then solve the technical barrier that the femoral intertrochanteric syntripsis can't closed reduction.Therefore, the operation of row femoral intertrochanteric syntripsis had not only reached the purpose of dual-use material when artificial femur handle of the present invention can be expert at hip replacement, and more helped the stable of hip joint.
Of the present invention plant the nail leading truck be positioning reference with described artificial femur handle; Promptly utilizing neck of femur existing on the artificial femur handle and femoral shaft upper surface and the co-axial screwed hole of femoral shaft will plant nail leading truck registration arm is fixed on the artificial femur handle; Again in the arc of registration arm one on be provided with axis respectively with artificial femur handle on the guide cylinder of axis conllinear of a set screw hole, accomplished simply under the situation that need not fluoroscopic apparatus guiding such as C type arm exactly with the complex task in the screw pedicle screw hole.It is thus clear that the nail leading truck of planting of the present invention not only can further improve the operation quality, and cost is low, greatly reduces patient's financial burden.
Description of drawings
Fig. 1～Fig. 3 is the structural representation of a specific embodiment of artificial femur handle of the present invention, and wherein, Fig. 1 is a front view, and Fig. 2 is a rearview, and Fig. 3 is a vertical view.
Fig. 4 is the A-A cutaway view of Fig. 1.
Fig. 5 is the B-B cutaway view of Fig. 1.
Fig. 6 is the C-C cutaway view of Fig. 3.
Fig. 7～Fig. 9 is structural representation of planting a specific embodiment of nail leading truck of the present invention, and wherein, Fig. 7 is a front view, and Fig. 8 is a right view, and Fig. 9 is a vertical view.
Figure 10 is Fig. 7～axonometric chart of planting the nail leading truck shown in Figure 9.
Figure 11 is artificial femur handle of the present invention and the user mode figure that plants the nail leading truck.
The specific embodiment
Referring to Fig. 1～Fig. 6; Modified model artificial femur handle of the present invention mainly comprises an artificial femur handle; This artificial femur handle is made up of femoral shaft 1 and spherical femoral head 2, and the end edge of the near-end of femoral shaft 1 is provided with acclivitous neck of femur 1-1, and the root of neck of femur 1-1 is provided with neck neck 1-2; Neck of femur 1-1 upper end is provided with step, and described femoral head 2 is enclosed within on this step; The center of the proximal face of femoral shaft 1 is provided with a screwed hole 1-4, and this screwed hole 1-4 is coaxial with femoral shaft 1.The outer wall of the near-end of femoral shaft 1 is provided with three screw hole 1-3; When described artificial femur handle implant into body femur 8; Two screw hole 1-3 wherein are positioned on the femoral shaft 1 corresponding to the regional 8-2 of the greater trochanter of human femur under loading 8; These two screw hole 1-3 lay respectively at through a side in femoral shaft 1 vertical section of neck of femur 1-1 and femoral shaft 1 axis and to the near-end of the femoral shaft 1 of artificial femur handle; Wherein, be positioned near the axis of the screw hole 1-3 of little tuberosity zone 8-1 one side of human femur under loading 8 and the angle in described vertical section
1Be 10 ° (referring to Fig. 4), be positioned at axis and the angle in described vertical section of the screw hole 1-3 of opposite side
2Be 45 ° (referring to Fig. 4); The angle of the cross section of the axis of these two screw hole 1-3 and femoral shaft 1
4Be 15 ° (referring to Fig. 6); Distance h between the inlet center of two screw hole 1-3 of above-mentioned greater trochanter zone 8-2 corresponding to human femur under loading 8 and the proximal face of femoral shaft 1
1Be 3mm (referring to Fig. 6).Another screw hole 1-3 among above-mentioned three screw hole 1-3 is positioned on the femoral shaft 1 middle part corresponding to the little tuberosity zone 8-1 of human femur under loading 8, its parallel axes in the cross section of femoral shaft 1 and with angle through femoral shaft 1 vertical section of neck of femur 1-1 and femoral shaft 1 axis
3Be 45 ° (referring to Fig. 5); Distance h 2 between the inlet center of above-mentioned another screw hole 1-3 and the proximal face of femoral shaft 1 is 20mm (referring to Fig. 6).
Referring to Fig. 7～Figure 10; This example is planted the nail leading truck for the capable femoral intertrochanteric syntripsis operation of artificial femur handle of using Fig. 1～shown in Figure 3; This plant the nail leading truck by registration arm 3, locating rod 7, be located at the arc 4 of registration arm 3 belows and three guide cylinders 5 being located on the arc 4 constitute; Wherein, The middle part of registration arm 3 is a horizontal part, and two is bent to form arc respectively downwards, and its one is provided with the first locating hole 3-1 that the neck of femur 1-1 head with said artificial femur handle is complementary; The middle part is provided with the second locating hole 3-2 in the corresponding position that is positioned at screwed hole 1-4 set on the femoral shaft 1, that is when installing this second locating hole 3-2 be positioned at described screwed hole 1-4 directly over; The higher authorities of locating rod 7 are located in the said second locating hole 3-2, following be provided with femoral shaft 1 on the external screw thread that is complementary of set screwed hole 1-4; Arc 4 is looped around outside the near-end of femoral shaft 1, and an other end with registration arm 3 of its upper surface fuses.The upper surface of above-mentioned arc 4 has extended upward two and has gone up extension 4-1; Be equipped with a guide cylinder 5 on it respectively; The axis of each guide cylinder 5 and axis conllinear corresponding to one of them screw hole 1-3 of the greater trochanter of human femur under loading 8 zone 8-2; Go up among the extension 4-1 for above-mentioned two, be positioned at fusing through femoral shaft 1 vertical section of neck of femur 1-1 and femoral shaft 1 axis near following of the last extension 4-1 of regional 8-1 one side of little tuberosity and registration arm 3; The lower surface of above-mentioned arc 4 is extended with a lower extension 4-2 downwards, is equipped with a guide cylinder 5 on it, the axis of this guide cylinder 5 and axis conllinear corresponding to the screw hole 1-3 at the middle part of the little tuberosity zone 8-1 of human femur under loading 8.
Referring to Figure 11, when undergoing surgery, earlier in the medullary cavity of the femoral shaft 1 implant into body femur 8 of the artificial femur handle of Fig. 1～shown in Figure 3, and after adjusting to suitable position, reset and each fractured bone piece of closed big or small tuberosity; Then leading truck shown in Figure 10 is installed on the femoral shaft 1; The method of its installation is: the head that earlier the first locating hole 3-1 on the registration arm 3 is placed in neck of femur 1-1; Then locating rod 7 is inserted from the second locating hole 3-2 of registration arm 3, its lower end is threaded among the screwed hole 1-4 of femoral shaft 1 near-end; At this moment; Whole leading truck is positioned on the femoral shaft 1; The position of each guide cylinder 5 is corresponding with corresponding screw hole 1-3; Under the guiding of guide cylinder 5, three screws 6 are implanted among the corresponding screw hole 1-3, can the greater trochanter zone 8-2 of human femur under loading 8 and the fractured bone piece of little tuberosity district 8-1 be fixed on the femoral shaft 1.
Claims (5)
1. modified model artificial femur handle; The edge of the femoral shaft of this artificial femur handle (1) upper surface is provided with acclivitous neck of femur (1-1); The center is provided with and the co-axial screwed hole of femoral shaft (1) (1-4), it is characterized in that the outer wall of the near-end of described femoral shaft (1) is provided with three screw holes (1-3); Wherein
The femoral shaft (1) that is positioned at two screw holes (1-3) goes up the greater trochanter zone (8-2) corresponding to human femur under loading (8); And be positioned at both sides through femoral shaft (1) vertical section of neck of femur (1-1) and femoral shaft (1) axis; Wherein, Being positioned near the axis of the screw hole (1-3) of little tuberosity zone (8-1) side of human femur under loading (8) and the angle in described vertical section is 8～12 °, and the axis and the angle in described vertical section that are positioned at the screw hole (1-3) of opposite side are 40～50 °;
The femoral shaft (1) that is positioned at a screw hole (1-3) goes up the middle part corresponding to the little tuberosity zone (8-1) of human femur under loading (8), and its axis is 40～50 ° with angle through femoral shaft (1) vertical section of neck of femur (1-1) and femoral shaft (1) axis.
2. a kind of modified model artificial femur handle according to claim 1; It is characterized in that; The said femoral shaft (1) that is arranged in goes up two screw holes (1-3) corresponding to the greater trochanter zone (8-2) of human femur under loading (8); Being positioned near the axis of the screw hole (1-3) of little tuberosity zone (8-1) side of human femur under loading (8) and the angle in described vertical section is 10 °, and the axis and the angle in described vertical section that are positioned at the screw hole (1-3) of opposite side are 45 °;
Saidly be positioned at femoral shaft (1) to go up corresponding to the axis of the screw hole (1-3) at the middle part in the little tuberosity zone (8-1) of human femur under loading (8) and the angle in said vertical section be 45 °.
3. a kind of modified model artificial femur handle according to claim 1; It is characterized in that; Saidly be positioned at the axis that femoral shaft (1) goes up corresponding to two screw holes (1-3) in the greater trochanter zone (8-2) of human femur under loading (8) and tilt, and form 15 ° angle with the cross section of femoral shaft (1) to the near-end of the femoral shaft (1) of artificial femur handle.
One kind use the capable femoral intertrochanteric syntripsis operation of claim 1,2 or 3 described artificial femur handles plant the nail leading truck, it is characterized in that this is planted the nail leading truck and is made up of registration arm (3), locating rod (7), arc (4) and three guide cylinders (5), wherein,
Described registration arm (3) is arc, and the one of which head is provided with first locating hole (3-1) that the neck of femur (1-1) with said artificial femur handle is complementary, and the middle part is provided with second locating hole (3-2) in the corresponding position that is positioned at screwed hole set on the said artificial femur handle (1-4);
The higher authorities of described locating rod (7) are located in said second locating hole (3-2), following be provided with said artificial femur handle on the external screw thread that is complementary of set screwed hole (1-4);
Described arc (4) fuses with the other end of said registration arm (3);
Described three guide cylinders (5) are located on the said arc (4), and axis separately respectively with said artificial femur handle on the axis conllinear of a set screw hole (1-3).
5. the nail leading truck of planting according to claim 4 is characterized in that, on the described arc (4), has extended upward two and has gone up extension (4-1), is extended with a lower extension (4-2) downwards; In described three guide cylinders (5); Two axis are located at said going up on the extension (4-1) respectively with guide cylinder (5) corresponding to the axis conllinear of two screw holes (1-3) in the greater trochanter zone (8-2) of human femur under loading (8) respectively, and axis is located on the said lower extension (4-2) with guide cylinder (5) corresponding to the axis conllinear of the screw hole (1-3) at the middle part in the little tuberosity zone (8-1) of human femur under loading (8).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201210011323.1A CN102525690B (en) | 2012-01-13 | 2012-01-13 | Improved artificial femoral stem and nail implanting guide frame thereof |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201210011323.1A CN102525690B (en) | 2012-01-13 | 2012-01-13 | Improved artificial femoral stem and nail implanting guide frame thereof |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN102525690A true CN102525690A (en) | 2012-07-04 |
| CN102525690B CN102525690B (en) | 2014-04-02 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201210011323.1A Expired - Fee Related CN102525690B (en) | 2012-01-13 | 2012-01-13 | Improved artificial femoral stem and nail implanting guide frame thereof |
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| Country | Link |
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| CN (1) | CN102525690B (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113855157A (en) * | 2021-11-01 | 2021-12-31 | 北京力达康科技有限公司 | Drilling guider for femoral greater tuberosity fixing screw |
Citations (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| FR2638963A1 (en) * | 1988-11-14 | 1990-05-18 | Tornier Sa | Artificial acetabula with studs for a total hip prosthesis |
| US5133764A (en) * | 1983-05-06 | 1992-07-28 | Pappas Michael J | Multi-component prosthesis with increased wall flexibility and segmented locking ridge to facilitate component assembly |
| DE4336819C1 (en) * | 1993-10-28 | 1995-03-23 | Eska Medical Gmbh & Co | Femoral endoprosthesis for a hip joint |
| DE19610741C1 (en) * | 1996-03-20 | 1997-11-20 | Eska Implants Gmbh & Co | Internal locking prosthesis for artificial hip-joint |
| EP1438934A1 (en) * | 2003-01-15 | 2004-07-21 | ESKA Implants GmbH & Co. | Set for constructing a cup shaped joint head implant for an artificial hip joint |
| CN101336840A (en) * | 2008-08-14 | 2009-01-07 | 夏胜利 | Hollow screw internal fixation guide pin locater of femoral neck fracture |
| CN201239191Y (en) * | 2008-08-22 | 2009-05-20 | 闫宏伟 | Intramedullary nail for locking fractured femur |
| CN201505174U (en) * | 2009-09-25 | 2010-06-16 | 郭谦 | Thighbone proximal hollow locking plate |
-
2012
- 2012-01-13 CN CN201210011323.1A patent/CN102525690B/en not_active Expired - Fee Related
Patent Citations (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US5133764A (en) * | 1983-05-06 | 1992-07-28 | Pappas Michael J | Multi-component prosthesis with increased wall flexibility and segmented locking ridge to facilitate component assembly |
| FR2638963A1 (en) * | 1988-11-14 | 1990-05-18 | Tornier Sa | Artificial acetabula with studs for a total hip prosthesis |
| DE4336819C1 (en) * | 1993-10-28 | 1995-03-23 | Eska Medical Gmbh & Co | Femoral endoprosthesis for a hip joint |
| DE19610741C1 (en) * | 1996-03-20 | 1997-11-20 | Eska Implants Gmbh & Co | Internal locking prosthesis for artificial hip-joint |
| EP1438934A1 (en) * | 2003-01-15 | 2004-07-21 | ESKA Implants GmbH & Co. | Set for constructing a cup shaped joint head implant for an artificial hip joint |
| CN101336840A (en) * | 2008-08-14 | 2009-01-07 | 夏胜利 | Hollow screw internal fixation guide pin locater of femoral neck fracture |
| CN201239191Y (en) * | 2008-08-22 | 2009-05-20 | 闫宏伟 | Intramedullary nail for locking fractured femur |
| CN201505174U (en) * | 2009-09-25 | 2010-06-16 | 郭谦 | Thighbone proximal hollow locking plate |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113855157A (en) * | 2021-11-01 | 2021-12-31 | 北京力达康科技有限公司 | Drilling guider for femoral greater tuberosity fixing screw |
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| CN102525690B (en) | 2014-04-02 |
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Granted publication date: 20140402 Termination date: 20170113 |