CN102525690B - Improved artificial femoral stem and nail implanting guide frame thereof - Google Patents

Improved artificial femoral stem and nail implanting guide frame thereof Download PDF

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Publication number
CN102525690B
CN102525690B CN201210011323.1A CN201210011323A CN102525690B CN 102525690 B CN102525690 B CN 102525690B CN 201210011323 A CN201210011323 A CN 201210011323A CN 102525690 B CN102525690 B CN 102525690B
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Prior art keywords
femur
axis
femoral shaft
femoral
screw hole
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Expired - Fee Related
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CN201210011323.1A
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CN102525690A (en
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李松建
于博
陈彦
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Southern Medical University
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Southern Medical University
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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

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  • Health & Medical Sciences (AREA)
  • Orthopedic Medicine & Surgery (AREA)
  • Cardiology (AREA)
  • Oral & Maxillofacial Surgery (AREA)
  • Transplantation (AREA)
  • Engineering & Computer Science (AREA)
  • Biomedical Technology (AREA)
  • Heart & Thoracic Surgery (AREA)
  • Vascular Medicine (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • Animal Behavior & Ethology (AREA)
  • General Health & Medical Sciences (AREA)
  • Public Health (AREA)
  • Veterinary Medicine (AREA)
  • Prostheses (AREA)
  • Surgical Instruments (AREA)

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

A kind of modified model artificial femur handle and plant nail leading truck
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
Old people is due to osteoporosis, and when falling or directly impacted by external force, near end of thighbone is easy to fracture, and is usually expressed as intertrochanteric fracture of the femur.Along with the appearance of population structure aging, in old people, the case of intertrochanteric fracture of the femur is more and more.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 conventionally, PFN is applicable to unstable fracture and comminuted fracture conventionally, hip replacement is to adopt artificial femur handle to substitute original femoral head neck, be applicable to unstable fracture, have advantages of that rapidly stable pipe joint, post-operative recovery are fast.Wherein, PFN is mainly comprised of small one and large one tapping screw of main nail and two pieces, main nail axially inserting in medullary cavity from trochiterian top along femur wherein, two pieces of tapping screws axially arriving in femoral head body through the nail Kong Bingjing neck of femur on main nail near-end along neck of femur from femur outer wall.PFN has good therapeutic effect to the unstable fracture of pulverizing, but, for tuberosity position serious splintered fracture, the situation that especially fracture cannot closed reduction, because main nail into nail position cannot be determined, while therefore using PFN separately, the fixed effect of bone piece is not good.Adopt artificial hip joint replacing can only replace femoral head footpath, the fixing bone piece of fracture, therefore use also cannot solve tuberosity part serious splintered fracture problem separately.
Summary of the invention
The technical problem to be solved in the present invention is to provide 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, there is an artificial femur handle, the edge of the femoral shaft upper surface of this work femoral stem is provided with acclivitous neck of femur, center is provided with the screwed hole coaxial with femoral shaft, it is characterized in that, the outer wall of the near-end of the femoral shaft of described artificial femur handle is provided with three screw holes, wherein
Two screw holes are positioned in femoral shaft the greater trochanter region corresponding to human femur under loading, and be positioned at the both sides through the femoral shaft vertical section of neck of femur and femoral shaft axis, wherein, the angle being positioned near the axis of the screw hole of little tuberosity region one side of human femur under loading and described vertical section is 8～12 °, and the axis of screw hole and the angle in described vertical section that are positioned at opposite side are 40～50 °;
Screw hole is positioned in femoral shaft the middle part corresponding to the little tuberosity region of human femur under loading, and its axis is 40～50 ° with the angle in femoral shaft vertical section through neck of femur and femoral shaft axis.
A kind of modified model artificial femur handle of the present invention, wherein, described two screw holes that are arranged in femoral shaft corresponding to the greater trochanter region of human femur under loading, the angle being positioned near the axis of the screw hole of little tuberosity region one side of human femur under loading and described vertical section is 10 °, and the axis of screw hole and the angle in described vertical section that are positioned at opposite side are 45 °;
A kind of modified model artificial femur handle of the present invention, after described artificial femur handle implant into body femur, femoral shaft near-end is generally positioned at the below of the end face in greater trochanter district, now, for the greater trochanter regional fracture bone piece of femoral shaft near-end top being fixed in femoral shaft, describedly be positioned in femoral shaft the near-end to the femoral shaft of artificial femur handle corresponding to the axis of two screw holes in the greater trochanter region of human femur under loading and tilt, and form the angle of 15 ° with the cross section of femoral shaft.
What another technical problem to be solved by this invention was to provide row femoral intertrochanteric syntripsis operation plants nail leading truck, and to improve the quality of hip replacement, its technical scheme is as described below:
That uses the operation of the capable femoral intertrochanteric syntripsis of above-mentioned artificial femur handle plants a nail leading truck, it is characterized in that, this is planted nail leading truck and is comprised of registration arm, locating rod, arc and three guide cylinders, wherein,
Described registration arm is arc, and one head is provided with the first locating hole that the neck of femur with described artificial femur handle matches, and middle part is provided with the second locating hole in the corresponding position that is positioned at screwed hole set on described artificial femur handle;
The top of described locating rod is located in described the second locating hole, following be provided with described artificial femur handle on the external screw thread that matches of set screwed hole;
Described arc is connected with the other end of described registration arm;
Three described guide cylinders are located on described 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 described arc, with the object that reaches weight reduction and save material, on the described arc of planting nail leading truck, extended upward two upper extensions, be extended with a lower extension downwards; In three described guide cylinders, two axis are located at respectively on described upper extension with the guide cylinder of the axis conllinear of two screw holes in greater trochanter region corresponding to human femur under loading respectively, and axis is located in described lower extension with the guide cylinder of the axis conllinear of the screw hole at the middle part in little tuberosity region corresponding to human femur under loading.
Artificial femur handle of the present invention improves acquisition on the basis of existing artificial femur handle, although three screw holes are set up in its improvement just near-end of femoral shaft and the greater trochanter region of human femur under loading and little tuberosity region, but utilize screw the bone piece of fracture can be fixed on artificial femur handle, and then solve the technical barrier that femoral intertrochanteric syntripsis cannot closed reduction.Therefore, when artificial femur handle of the present invention can be expert at hip replacement, the operation of row femoral intertrochanteric syntripsis, has not only reached the object of dual-use material, and is more conducive to the stable of hip joint.
The nail leading truck of planting of the present invention be take described artificial femur handle as positioning datum, utilizing the coaxial screwed hole of neck of femur existing on artificial femur handle and femoral shaft upper surface and femoral shaft will plant nail leading truck registration arm is fixed on artificial femur handle, on the arc with registration arm one, arrange again axis respectively with artificial femur handle on the guide cylinder of axis conllinear of a set screw hole, completed simply without fluoroscopic apparatus guiding such as C type arms in the situation that exactly by the complex task in screw placement screw hole.Visible, the nail leading truck of planting of the present invention not only can further improve operation quality, and cost is low, greatly reduces patient's financial burden.
Accompanying drawing explanation
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 front view, and Fig. 2 is rearview, and Fig. 3 is top 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 front view, and Fig. 8 is right view, and Fig. 9 is top view.
Figure 10 is the axonometric chart of planting nail leading truck shown in Fig. 7～Fig. 9.
Figure 11 is artificial femur handle of the present invention and the using state figure that plants 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 consists of femoral shaft 1 and spherical femoral head 2, the end edge of the near-end of femoral shaft 1 is provided with acclivitous neck of femur 1-1, 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 are wherein positioned in femoral shaft 1 the greater trochanter region 8-2 corresponding to 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 at the angle α near the axis of the screw hole 1-3 of little tuberosity region 8-1 mono-side of human femur under loading 8 and described vertical section 1be 10 ° (referring to Fig. 4), be positioned at the axis of screw hole 1-3 and the angle α in described vertical section of opposite side 2be 45 ° (referring to Fig. 4); The angle α of the cross section of the axis of these two screw hole 1-3 and femoral shaft 1 4be 15 ° (referring to Fig. 6); The entrance center of two screw hole 1-3 of the above-mentioned greater trochanter region 8-2 corresponding to human femur under loading 8 and the distance h between the proximal face of femoral shaft 1 1for 3mm (referring to Fig. 6).Another screw hole 1-3 in above-mentioned three screw hole 1-3 is positioned in femoral shaft 1 middle part corresponding to the little tuberosity region 8-1 of human femur under loading 8, its axis be parallel to femoral shaft 1 cross section and with the angle α in femoral shaft 1 vertical section through neck of femur 1-1 and femoral shaft 1 axis 3be 45 ° (referring to Fig. 5); Distance h 2 between the entrance 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 nail leading truck for what use the capable femoral intertrochanteric syntripsis operation of the artificial femur handle shown in Fig. 1～Fig. 3, this plants nail leading truck by registration arm 3, locating rod 7, three guide cylinders 5 that are located at the arc 4 of registration arm 3 belows and are located on arc 4 form, wherein, the middle part of registration arm 3 is horizontal part, two is bent to form respectively arc downwards, its one is provided with the first locating hole 3-1 that the neck of femur 1-1 head with described artificial femur handle matches, middle part is provided with the second locating hole 3-2 in the corresponding position that is positioned at screwed hole 1-4 set in femoral shaft 1, that is while installing this second locating hole 3-2 be positioned at described screwed hole 1-4 directly over, the top of locating rod 7 is located in described the second locating hole 3-2, following be provided with femoral shaft 1 on the external screw thread that matches of set screwed hole 1-4, arc 4 is looped around outside the near-end of femoral shaft 1, and one of its upper surface is connected with the other end of registration arm 3.The upper surface of above-mentioned arc 4 has extended upward two upper extension 4-1, on it, be equipped with respectively a guide cylinder 5, the axis conllinear of the axis of each guide cylinder 5 and one of them screw hole 1-3 corresponding to the greater trochanter region 8-2 of human femur under loading 8, in above-mentioned two upper extension 4-1, the upper extension 4-1 being positioned at through close little tuberosity region 8-1 mono-side in femoral shaft 1 vertical section of neck of femur 1-1 and femoral shaft 1 axis is connected with the following of 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 conllinear of the axis of this guide cylinder 5 and the screw hole 1-3 at middle part corresponding to the little tuberosity region 8-1 of human femur under loading 8.
Referring to Figure 11, while performing the operation, first in the medullary cavity of the femoral shaft 1 implant into body femur 8 of the artificial femur handle shown in Fig. 1～Fig. 3, and adjust to behind applicable position each fractured bone piece of reset and closed big or small tuberosity; Then the leading truck shown in Figure 10 is installed in femoral shaft 1, the method of its installation is: the head that first the first locating hole 3-1 in registration arm 3 is placed on to 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 in the screwed hole 1-4 of femoral shaft 1 near-end; Now, whole leading truck is positioned in 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 in corresponding screw hole 1-3, the fractured bone piece of the greater trochanter region 8-2He little tuberosity district 8-1 of human femur under loading 8 can be fixed in femoral shaft 1.

Claims (5)

1. a 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), center is provided with the screwed hole (1-4) coaxial with femoral shaft (1), 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
Two screw holes (1-3) are positioned at the upper greater trochanter region (8-2) corresponding to human femur under loading (8) of femoral shaft (1), and be positioned at the both sides through femoral shaft (1) vertical section of neck of femur (1-1) and femoral shaft (1) axis, wherein, the angle being positioned near the axis of the screw hole (1-3) of little tuberosity region (8-1) side of human femur under loading (8) and described vertical section is 8～12 °, and the axis of screw hole (1-3) and the angle in described vertical section that are positioned at opposite side are 40～50 °;
A screw hole (1-3) is positioned at the middle part in the upper little tuberosity region (8-1) corresponding to human femur under loading (8) of femoral shaft (1), and its axis is 40～50 ° with the angle in femoral shaft (1) vertical section through 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, described two screw holes (1-3) that are arranged in the upper greater trochanter region (8-2) corresponding to human femur under loading (8) of femoral shaft (1), the angle being positioned near the axis of the screw hole (1-3) of little tuberosity region (8-1) side of human femur under loading (8) and described vertical section is 10 °, and the axis of screw hole (1-3) and the angle in described vertical section that are positioned at opposite side are 45 °;
The described axis of screw hole (1-3) and the angle in described vertical section that is positioned at the middle part in the upper little tuberosity region (8-1) corresponding to human femur under loading (8) of femoral shaft (1) is 45 °.
3. a kind of modified model artificial femur handle according to claim 1, it is characterized in that, the axis of described two screw holes (1-3) that are positioned at the upper greater trochanter region (8-2) corresponding to human femur under loading (8) of femoral shaft (1) tilts to the near-end of the femoral shaft (1) of artificial femur handle, and forms the angle of 15 ° with the cross section of femoral shaft (1).
4. what a right to use required the capable femoral intertrochanteric syntripsis operation of artificial femur handle described in 1,2 or 3 plants nail leading truck, it is characterized in that, this plant nail leading truck by registration arm (3), locating rod (7), arc (4) and three guide cylinders (5), formed, wherein
Described registration arm (3) is arc, one head is provided with the first locating hole (3-1) that the neck of femur (1-1) with described artificial femur handle matches, and middle part is provided with the second locating hole (3-2) in the corresponding position that is positioned at screwed hole set on described artificial femur handle (1-4);
The top of described locating rod (7) is located in described the second locating hole (3-2), following be provided with described artificial femur handle on the external screw thread that matches of set screwed hole (1-4);
Described arc (4) is connected with the other end of described registration arm (3);
It is upper that described three guide cylinders (5) are located in described arc (4), and axis separately respectively with described 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, described arc (4) is upper, has extended upward two upper extensions (4-1), is extended with a lower extension (4-2) downwards; In described three guide cylinders (5), to be located at respectively described upper extension (4-1) upper with the guide cylinder (5) of the axis conllinear of two screw holes (1-3) in greater trochanter region (8-2) corresponding to human femur under loading (8) respectively for two axis, and axis is located in described lower extension (4-2) with the guide cylinder (5) of the axis conllinear of the screw hole (1-3) at the middle part in little tuberosity region (8-1) corresponding to human femur under loading (8).
CN201210011323.1A 2012-01-13 2012-01-13 Improved artificial femoral stem and nail implanting guide frame thereof Expired - Fee Related CN102525690B (en)

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Families Citing this family (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN111110313A (en) * 2020-01-13 2020-05-08 陈立军 Osteotomy navigation tool for trochanter-shaped artificial femoral head replacement
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)

* Cited by examiner, † Cited by third party
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

Patent Citations (8)

* Cited by examiner, † Cited by third party
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

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