CN106725820B - Femoral neck front torsion angle reference system-fixed point offset guide needle aiming hollow nail fixing system - Google Patents
Femoral neck front torsion angle reference system-fixed point offset guide needle aiming hollow nail fixing system Download PDFInfo
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- CN106725820B CN106725820B CN201710019266.4A CN201710019266A CN106725820B CN 106725820 B CN106725820 B CN 106725820B CN 201710019266 A CN201710019266 A CN 201710019266A CN 106725820 B CN106725820 B CN 106725820B
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- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
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- A61B17/00—Surgical instruments, devices or methods, e.g. tourniquets
- A61B17/56—Surgical instruments or methods for treatment of bones or joints; Devices specially adapted therefor
- A61B17/58—Surgical instruments or methods for treatment of bones or joints; Devices specially adapted therefor for osteosynthesis, e.g. bone plates, screws, setting implements or the like
- A61B17/88—Osteosynthesis instruments; Methods or means for implanting or extracting internal or external fixation devices
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- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61B—DIAGNOSIS; SURGERY; IDENTIFICATION
- A61B17/00—Surgical instruments, devices or methods, e.g. tourniquets
- A61B17/56—Surgical instruments or methods for treatment of bones or joints; Devices specially adapted therefor
- A61B17/58—Surgical instruments or methods for treatment of bones or joints; Devices specially adapted therefor for osteosynthesis, e.g. bone plates, screws, setting implements or the like
- A61B17/68—Internal fixation devices, including fasteners and spinal fixators, even if a part thereof projects from the skin
- A61B17/683—Internal fixation devices, including fasteners and spinal fixators, even if a part thereof projects from the skin comprising bone transfixation elements, e.g. bolt with a distal cooperating element such as a nut
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- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61B—DIAGNOSIS; SURGERY; IDENTIFICATION
- A61B17/00—Surgical instruments, devices or methods, e.g. tourniquets
- A61B17/56—Surgical instruments or methods for treatment of bones or joints; Devices specially adapted therefor
- A61B17/58—Surgical instruments or methods for treatment of bones or joints; Devices specially adapted therefor for osteosynthesis, e.g. bone plates, screws, setting implements or the like
- A61B17/88—Osteosynthesis instruments; Methods or means for implanting or extracting internal or external fixation devices
- A61B17/90—Guides therefor
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- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61B—DIAGNOSIS; SURGERY; IDENTIFICATION
- A61B17/00—Surgical instruments, devices or methods, e.g. tourniquets
- A61B17/56—Surgical instruments or methods for treatment of bones or joints; Devices specially adapted therefor
- A61B2017/564—Methods for bone or joint treatment
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- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61B—DIAGNOSIS; SURGERY; IDENTIFICATION
- A61B17/00—Surgical instruments, devices or methods, e.g. tourniquets
- A61B17/56—Surgical instruments or methods for treatment of bones or joints; Devices specially adapted therefor
- A61B17/58—Surgical instruments or methods for treatment of bones or joints; Devices specially adapted therefor for osteosynthesis, e.g. bone plates, screws, setting implements or the like
- A61B17/68—Internal fixation devices, including fasteners and spinal fixators, even if a part thereof projects from the skin
- A61B2017/681—Alignment, compression, or distraction mechanisms
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Abstract
The invention discloses a femur neck front torsion angle reference system-fixed point offset guide pin aiming hollow nail fixing system, which belongs to the field of orthopedic operation equipment, and comprises a femur neck near point positioning device, a femur neck far point positioning device, a femur neck front torsion angle determining device and a vertical adjustable femur neck fixed point offset aiming device; the fixed-point offset hollow nail guide needle aiming system takes the front torsion angle of the femoral neck as a reference system, fully utilizes anatomical marks at the proximal end of the femur to determine the required far and near mark points of the guide needle, adopts a fixed-point offset method, successfully and accurately implants the hollow nail guide needle of the femoral neck at one time under the condition of not depending on X-ray perspective and navigation, and is accurate in operation and safe and reliable.
Description
Technical Field
The invention belongs to the field of orthopedic operation equipment, relates to hollow nail guide needle aiming and fixing equipment, and in particular relates to a guide needle aiming device and a hollow nail fixing system which are designed by taking a front torsion angle of a femoral neck as a reference system and adopting a vertical adjustable fixed point offset method.
Background
The method for treating the fracture of the femoral neck by three nails is to screw three hollow threaded nails into the femoral neck through the cortical bone at the proximal end of the femur and the fracture of the femoral neck by the fracture line of the femoral neck, and the three hollow threaded nails are respectively stressed by reasonable layout. The three nails have the advantages of treating the fracture of the femoral neck: the trauma is small, and three threaded steel nails are driven into the proper position of the femoral neck; the wound is small, the healing is quick, the safety is high, and serious complications are rarely generated; has definite curative effect, and can be discharged from the hospital after a few days of operation.
The operation effect of treating the femoral neck fracture by the three nails is closely related to the position layout of the three nails, and is not direct-view operation, but is operation under X-ray perspective. The internal fixation of three hollow nails has become a standard operation for neck medium-sized distal femur neck fracture, and the key is the correct position and ideal length of the inserted guide pin. At present, the common guide pin is placed mostly by visual inspection and experience of doctors, measurement of objective standard is lacked, adjustment in operation cannot be quantified, and the following problems exist:
1. highly dependent on X-ray fluoroscopy; 2. the proximal femur is repeatedly operated to cause bone defect, iatrogenic fracture, and the holding force of the screw is reduced, loosened or nail-removed; 3. not only the position and the angle of the guide pin in the femur neck can not be accurately determined, but also the ideal guide pin length can not be achieved, the guide pin and the screw are extremely easy to break through the joint cartilage, and the pelvic organs and joints are damaged; 4. the surgeon needs to repeatedly use the C-arm machine for positioning in preoperative operation, and repeatedly adjusts the puncture needle for trial positioning according to the operation experience of the clinician. When a doctor with a young or not enough clinical experience operates, the number of times of fluoroscopy shooting is inevitably increased, the radiation quantity received by doctors and patients is increased, the puncture frequency is increased, and the pain of patients is increased. Even doctors with abundant clinical experience can not avoid using a C-arm machine for shooting and positioning and using a Kirschner wire for puncture for many times during positioning. 5. In primary hospitals and natural disaster areas such as earthquake typhoons, the risk of the operation is extremely high due to the lack of equipment such as a C-arm X-ray machine.
Currently, there is a lack of an aiming fixation system for a hollow femoral neck pin guide needle that relies solely on the anatomy of the proximal femur and does not rely on intraoperative X-ray fluoroscopy. Therefore, a simple, practical and convenient femoral neck hollow nail guide needle aiming and hollow nail fixing system for reducing the operation difficulty, improving the operation efficiency and increasing the operation safety is urgently needed for clinical use.
Disclosure of Invention
The invention aims to provide a femur neck front torsion angle reference system-fixed point offset guide needle aiming hollow nail fixing system which has the advantages of simple structure, convenience in use, safety, reliability, accuracy, operation efficiency improvement and operation safety improvement. The anterior torsion angle of the femoral neck is a dihedral angle formed by the longitudinal middle axial surface of the femoral neck and the proximal crown surface of the femur, and is formed by the anterior torsion of the femoral neck along the longitudinal central axis of the femoral neck; unlike the anterior dip of the femoral neck (i.e., the angle of the plane formed by the longitudinal central axis of the femoral neck and the proximal coronal plane of the femur, the angle is formed by the anterior rotation of the femoral neck about the proximal longitudinal central axis of the femur).
In order to achieve the above purpose, the technical scheme of the invention is as follows: providing a femur neck front torsion angle reference system, namely a vertical adjustable fixed point offset guide pin aiming and hollow nail fixing system, wherein the system comprises a femur neck near point positioning device, a femur neck far point positioning device, a femur neck front torsion angle determining device and a vertical adjustable femur neck fixed point offset aiming device; the femur neck near point positioning device consists of an inner lower module and an outer upper module, wherein the inner lower module is a plate-shaped pressing piece, a left clamping strip is arranged below the side of the plate-shaped pressing piece, and a plurality of vertical limiting grooves are formed in the front side surface of the plate-shaped pressing piece; the outer upper module is a block-shaped pressing piece, a right clamping strip is arranged below the side of the block-shaped pressing piece, a strip-shaped groove which can be embedded into the plate-shaped pressing piece and is matched with the plate-shaped pressing piece is formed in the middle of the block-shaped pressing piece, and a plurality of vertical limiting grooves are formed in the front side face of the block-shaped pressing piece; the femur neck far point positioning device consists of a large tuberosity point positioning plate and an L-shaped far point positioning plate, wherein the bottom of the large tuberosity point positioning plate is provided with a sliding block, and the side surface of the large tuberosity point positioning plate is provided with a plurality of fine tuning guide holes; the top of the L-shaped far point locating plate is provided with a chute, the large tuberosity point locating plate can move on the top of the L-shaped far point locating plate through a sliding block, the side surface of the L-shaped far point locating plate is provided with an upper reference hole and a lower reference hole, and a central fixing hole is arranged between the upper reference hole and the lower reference hole; the femur neck front torsion angle determining device consists of a front torsion angle measuring module, a femur neck pressing plate and a front torsion angle connecting rod; the side surface of the front torsion angle measuring module is provided with a mounting hole, and the middle part of the front torsion angle measuring module is fixed at the central fixing hole of the L-shaped far point locating plate through a connecting piece; the tail end of the front torsion angle connecting rod is connected with the mounting hole of the front torsion angle measuring module, and the front end of the front torsion angle connecting rod is fixed on the femur neck pressing plate through a sliding block; the vertical adjustable femoral neck fixed-point offset sighting device consists of a ranging rod, a vertical adjustable offset sighting frame and a combined sleeve; the front end of the vertical adjustable offset aiming bracket vertically moves on the ranging rod through a sliding block, and an aiming hook is arranged at the tail end of the vertical adjustable offset aiming bracket; the combined sleeve is fixed on the ranging rod vertically, and an axial hole for placing a Kirschner wire is arranged in the combined sleeve.
Furthermore, scales are arranged on the platy pressing piece and the blocky pressing piece of the near-point positioning device for the femoral neck, so that the transverse diameter of the femoral neck is convenient to measure, and the platy pressing piece and the blocky pressing piece are freely installed and detached, so that the transverse diameter of the femoral neck is accurately and intuitively measured, and the near-point position is accurately determined.
Further, a central fixing hole, at least two upper reference holes horizontally arranged and at least two lower reference holes horizontally arranged are arranged on the side face of the L-shaped far point locating plate. And determining a distal positioning point of the bone cortex outside the proximal femur by taking the vertex of the femur tuberosity as a mark.
Further, a central positioning hole is formed in the middle of the front torsion angle measuring module, and the positioning hole can be used for enabling the fixing needle to penetrate through the central axis of the outer side of the proximal end of the femur perpendicularly to the L-shaped far point positioning plate.
Further, the front torsion angle connecting rod is vertically connected with the femoral neck pressing plate, and the front torsion angle is adjusted by inserting the front torsion angle connecting rod into the mounting hole and rotating forwards by taking the central positioning hole as an axis.
Furthermore, the distance measuring rod is provided with scales, so that the distance (depth) between the tip of the aiming hook on the vertical adjustable distance-adjusting aiming bracket and the center of the femoral neck (the Kirschner wire passing through the center of the sleeve and the extension line of the Kirschner wire passing through the central axis of the femoral neck) can be conveniently adjusted.
Further, the aiming hook is perpendicular to the vertically adjustable offset aiming block.
Further, the combined sleeve is parallel to the vertically adjustable offset aiming block.
Further, the combined sleeve comprises an outer cylinder and an inner cylinder, the inner cylinder coaxially moves in the outer cylinder, sharp claws are arranged at the outlet ends of the inner cylinder and the outer cylinder, the sharp claws are favorable for pushing away muscles in the operation process, the Kirschner wire is fixed in an axial hole in the inner cylinder, after the outer cylinder is fixed, the Kirschner wire is fixed through the inner cylinder and then operated in the outer cylinder, and damage to surrounding tissues is effectively avoided.
Furthermore, the vertical adjustable offset aiming bracket and the combined sleeve can be fixed on the ranging rod through adjusting the locking bolt.
Further, an axial hole for placing a Kirschner wire is formed in the inner cylinder. The inner cylinder is at least two layers (a middle cylinder and a small cylinder), the Kirschner wire is fixed after the axial hole of the innermost small cylinder is matched with the outer diameter of the Kirschner wire, the inner diameter of the middle cylinder is matched with the outer diameter of the hollow drill, the guiding function of the hollow drill is achieved, the direction of the hollow drill is ensured not to deviate all the time, and the purpose of high-precision drilling is achieved.
The femur neck front torsion angle reference system-fixed point offset guide needle aiming hollow nail fixing system has the following beneficial effects:
1. the femur neck front torsion angle reference system-fixed point offset guide needle aiming hollow nail fixing system takes the femur neck front torsion angle as a reference system, fully utilizes the femur near end anatomical mark to determine the far and near mark points required by the guide needle, adopts a vertical adjustable fixed point offset method, successfully and accurately implants the femur neck hollow nail guide needle at one time under the condition of not depending on X-ray perspective and navigation, and is accurate in operation and safe and reliable.
2. The operation does not need repeated perspective to know whether the position of the hollow nail is accurate, and the joint cartilage is not broken through and enters the pelvic cavity, so that unnecessary damage is caused, and the pain of a patient is reduced.
3. The near-point positioning device of the femoral neck in the femoral neck front torsion angle reference system-fixed point offset guide pin aiming hollow nail fixing system is provided with a vertical limiting groove, so that an aiming hook in the femoral neck fixed point offset aiming device vertically fixes the upper top end of the proximal end center of the femoral neck, and a combined sleeve is vertical to the aiming hook, so that a Kirschner wire accurately penetrates to the center of the femoral neck.
4. After the outer cylinder is fixed, the operations of drilling the Kirschner wire, drilling the hollow drill, sounding, screwing in the screw and the like through the inner cylinder are implemented in the outer cylinder, so that the damage to surrounding tissues is effectively avoided.
Drawings
FIG. 1 is a schematic diagram of a structure of a proximal femoral neck positioning device, a distal femoral neck positioning device and a front torsion angle measuring module applied to a femur in a femoral neck front torsion angle reference system-fixed point offset guide pin aiming hollow nail fixing system;
FIG. 2 is a schematic view of the structure of the lower inner module in FIG. 1;
FIG. 3 is a schematic view of the outer upper module of FIG. 1;
FIG. 4 is a schematic view of a connection structure between the distal femur neck point positioning device and the anterior torsion angle measurement module in FIG. 1;
FIG. 5 is a schematic view of the connection structure between the femoral neck pressure plate and the anterior torsion angle connecting rod in the anterior torsion angle determination device of the femoral neck of the present invention;
FIG. 6 is a schematic view of a vertical adjustable femoral neck fixed point offset aiming device in the femoral neck anterior torsion angle reference system-fixed point offset guide needle aiming hollow nail fixing system of the invention;
in the figure: 1. femoral head; 2. an outer upper module; 21. a strip-shaped groove; 22. a right clamping strip; 23. a vertical limit groove; 3. the center of the peak of the large tuberosity; 4. a large tuberosity point positioning plate; 41. fine tuning the guide hole; 42. a slide block; 5. a front torsion angle measurement module; 51. positioning holes; 52. a mounting hole; 6. fixing the needle; 7. l-shaped far point positioning plate; 71. an upper reference hole; 72. a lower reference hole; 8. an inner lower module; 81. a left clamping strip; 82. a vertical limit groove; 9. a femoral neck compression plate; 91. a front torsion angle connecting rod; 10. a ranging rod; 11. a slide block; 12. adjusting the locking bolt; 13. a vertically adjustable offset aiming bracket; 14. a sighting hook; 15. a sharp claw; 16. and combining the sleeves.
Detailed Description
For a detailed description of the technical contents, constructional features of the vertical adjustable fixed point offset guide pin aiming hollow pin fixing system of the present invention, the following description is further made with reference to the embodiments and the accompanying drawings.
As shown in fig. 1, 2, 3, 4, 5 and 6, the fixing system of the femoral neck front torsion angle reference system-fixed point offset guide needle aiming hollow nail comprises a femoral neck near point positioning device, a femoral neck far point positioning device, a femoral neck front torsion angle determining device and a vertical adjustable femoral neck fixed point offset aiming device, and the fixing system comprises the following specific structures:
the femur neck near point positioning device consists of an inner lower module 8 and an outer upper module 2, wherein the inner lower module 8 is a plate-shaped pressing sheet, a left clamping strip 81 is arranged below the side of the plate-shaped pressing sheet, and a plurality of vertical limiting grooves 82 are formed in the front side surface of the plate-shaped pressing sheet; the outer upper module 2 is a block-shaped pressing piece, a right clamping strip 22 is arranged below the side of the block-shaped pressing piece, a strip-shaped groove 21 which can be embedded into the plate-shaped pressing piece and matched with the plate-shaped pressing piece is formed in the middle of the block-shaped pressing piece, and a plurality of vertical limiting grooves 23 are formed in the front side face of the block-shaped pressing piece. The left clamping strip 81 and the right clamping strip 22 are respectively clamped at the left end and the right end of the femur neck, the platy pressing piece is sleeved in the strip-shaped groove 21 of the blocky pressing piece, and scales are arranged on the platy pressing piece and the blocky pressing piece, so that the transverse diameter of the femur neck can be measured; the vertical limiting groove can fix the sighting hook to be perpendicular to the center of the femoral neck.
The femur neck far point positioning device consists of a large tuberosity point positioning plate 4 and an L-shaped far point positioning plate 7, wherein a sliding block 42 is arranged at the bottom of the large tuberosity point positioning plate 4, and a plurality of fine tuning guide holes 41 are formed in the side face of the large tuberosity point positioning plate 4; the top of the L-shaped far point locating plate 7 is provided with a sliding groove, the large-tuberosity top locating plate 4 can move on the top of the L-shaped far point locating plate through a sliding block 42, the side face of the L-shaped far point locating plate 7 is provided with at least two upper reference holes 71 which are horizontally arranged and at least two lower reference holes 72 which are horizontally arranged, and a central fixing hole is arranged between the upper reference holes 71 and the lower reference holes 72.
The femur neck front torsion angle determining device consists of a front torsion angle measuring module 5, a femur neck pressing plate 9 and a front torsion angle connecting rod 91; the side surface of the front torsion angle measuring module 5 is provided with a mounting hole 52, and the middle part of the front torsion angle measuring module 5 is fixed at the central fixing hole of the L-shaped far point locating plate 7 through a connecting piece; the middle of the side surface of the front torsion angle measuring module 5 is provided with a central positioning hole 51, and the positioning hole 51 can be used for the fixing needle 6 to penetrate to the central axis of the outer side of the proximal femur (as shown in figure 1) perpendicular to the L-shaped far point positioning plate 7. According to the pre-operation torsion angle measurement, the pre-rotation torsion angle measurement module 5 is rotated to the angle, and then three holes of the upper reference hole 71, the central positioning hole 51 and the lower reference hole 72 are positioned in the same straight line direction. The end of the front torsion angle connecting rod 91 is connected to the mounting hole 52 of the front torsion angle measuring module 5, and the front end of the front torsion angle connecting rod 91 is fixed to the femoral neck pressing plate 9 through a slider, wherein the front torsion angle connecting rod 91 is vertically connected to the femoral neck pressing plate 9.
The vertical adjustable femoral neck fixed-point offset sighting device consists of a ranging rod 10, a vertical adjustable offset sighting frame 13 and a combined sleeve 16; the front end of the vertical adjustable offset aiming bracket 13 vertically moves on the ranging rod 10 through the sliding block 11, and an aiming hook 14 is arranged at the tail end of the vertical adjustable offset aiming bracket 13; the combined sleeve 16 is fixed on the ranging rod 10 vertically, and an axial hole for placing a kirschner wire is arranged in the combined sleeve 16. The distance measuring rod 10 is provided with scales, so that the distance (depth) from the sighting hook on the vertical adjustable distance sighting frame to the center of the femoral neck can be conveniently adjusted. The aiming hooks 14 are perpendicular to the vertically adjustable offset aiming block 13. The combined sleeve 16 is parallel to the vertically adjustable offset aiming block 13.
The combined sleeve 16 comprises an outer cylinder and an inner cylinder, the inner cylinder coaxially moves in the outer cylinder, sharp claws 15 are arranged at the outlet ends of the inner cylinder and the outer cylinder, the sharp claws are favorable for pushing away muscles in the operation process, the Kirschner wire is fixed in an inner axial cavity of the inner cylinder, after the outer cylinder is fixed, the Kirschner wire is fixed through the inner cylinder and then operated in the outer cylinder, and damage to surrounding tissues is effectively avoided. An axial hole for placing a Kirschner wire is formed in the inner cylinder. The inner cylinder is at least two layers (a middle cylinder and a small cylinder), the Kirschner wire is fixed after the axial hole of the innermost small cylinder is matched with the outer diameter of the Kirschner wire, the inner diameter of the middle cylinder is matched with the outer diameter of the hollow drill, the guiding function of the hollow drill is achieved, the direction of the hollow drill is ensured not to deviate all the time, and the purpose of high-precision drilling is achieved.
The vertical adjustable offset aiming block 13 and the combined sleeve 16 can be fixed on the ranging rod 10 through the adjusting locking bolt 12.
The invention relates to a method for using a femoral neck front torsion angle reference system-fixed point offset guide needle aiming hollow nail fixing system, which comprises the following steps:
1. after fracture incision and reduction, the inner lower module 8 is inserted along the deep surface of the hip joint capsule and clings to the inner lower cortical bone of the femoral neck; the outer upper module 2 is inserted along the deep surface of the hip joint capsule and is tightly attached to the cortical bone on the outer upper side of the femoral neck, the inner lower module 8 is positioned in a strip-shaped groove in the outer upper module 2, the transverse diameter of the femoral neck is measured through scales after fastening, and the proximal mark points A1, A2 and A3 are determined, as shown in figure 1. In fig. 1, reference numeral 1 denotes a femoral head.
2. The large tuberosity point positioning plate 4 is fixed at the center 3 of the large tuberosity point through a fine tuning guide hole 41 by a fixing needle, the L-shaped far point positioning plate 7 is matched with a sliding block of the large tuberosity point positioning plate 4 through a sliding groove at the top, and then the front torsion angle measuring module 5 is arranged at a fixing hole of the L-shaped far point positioning plate. As shown in fig. 1, the L-shaped distal positioning plate 7 is adjusted to be positioned on the medial axis of the proximal outer side of the femur, and distal marker points B1, B2, B3 are determined.
3. According to the pre-operation measured front torsion angle, rotating the front torsion angle measuring module 5 to the angle and penetrating and fixing the front torsion angle measuring module from the positioning hole through the fixing needle 6; the anterior torsion angle connecting rod 91 is then inserted into the mounting hole 52 in front of the anterior torsion angle measuring module 5, the femoral neck platen 9 is pressed parallel against the outer upper module 2, and the outer upper module 2, the inner lower module 8 are adjusted to be parallel with the femoral neck platen 9.
4. As shown in fig. 6, the tip of the aiming hook 14 is placed in the vertical limit groove of the outer upper module in front of A1, and the aiming hook is kept vertical to the outer upper module and the inner lower module; after passing through the small barrel axial bore of the inner barrel of the combination sleeve 16, the tip of the k-wire is located at point B1, as shown in fig. 1. After the far-end mark points and the near-end mark points are determined, the offset from the tip of the aiming hook to the center of the femoral neck is calculated according to the preoperative measurement result, the vertical adjustable offset aiming bracket 13 is adjusted by moving the sliding block 11, and the target is positioned according to the scale on the distance measuring rod. The Kirschner wire is drilled in this direction.
5. After the Kirschner wire is drilled in the direction, firstly taking out the innermost small cylinder, then drilling the hollow drill along the inner diameter of the middle cylinder along the Kirschner wire direction, taking out the middle cylinder after the hollow drill is placed in the hollow drill, ensuring that the direction of the hollow drill is not deviated all the time, and achieving the purpose of high-precision drilling.
The foregoing disclosure is merely illustrative of the preferred embodiments of the present invention and is not intended to limit the scope of the claims herein, as equivalent variations of the claims herein will fall within the scope of the invention.
Claims (8)
1. The femur neck front torsion angle reference system-fixed point offset guide needle aiming hollow nail fixing system is characterized in that: comprises a near-point positioning device of a femoral neck, a far-point positioning device of the femoral neck, a front torsion angle determining device of the femoral neck and a vertical adjustable fixed-point offset aiming device of the femoral neck; the femur neck near point positioning device consists of an inner lower module and an outer upper module, wherein the inner lower module is a plate-shaped pressing piece, a left clamping strip is arranged below the side of the plate-shaped pressing piece, and a plurality of vertical limiting grooves are formed in the front side surface of the plate-shaped pressing piece; the outer upper module is a block-shaped pressing piece, a right clamping strip is arranged below the side of the block-shaped pressing piece, a strip-shaped groove which can be embedded into the plate-shaped pressing piece and is matched with the plate-shaped pressing piece is formed in the middle of the block-shaped pressing piece, and a plurality of vertical limiting grooves are formed in the front side face of the block-shaped pressing piece; the femur neck far point positioning device consists of a large tuberosity point positioning plate and an L-shaped far point positioning plate, wherein the bottom of the large tuberosity point positioning plate is provided with a sliding block, and the side surface of the large tuberosity point positioning plate is provided with a plurality of fine tuning guide holes; the top of the L-shaped far point locating plate is provided with a chute, the large tuberosity point locating plate can move on the top of the L-shaped far point locating plate through a sliding block, the side surface of the L-shaped far point locating plate is provided with an upper reference hole and a lower reference hole, and a central fixing hole is arranged between the upper reference hole and the lower reference hole; the femur neck front torsion angle determining device consists of a front torsion angle measuring module, a femur neck pressing plate and a front torsion angle connecting rod; the side surface of the front torsion angle measuring module is provided with a mounting hole, and the middle part of the front torsion angle measuring module is fixed at the central fixing hole of the L-shaped far point locating plate through a connecting piece; the tail end of the front torsion angle connecting rod is connected with the mounting hole of the front torsion angle measuring module, and the front end of the front torsion angle connecting rod is fixed on the femur neck pressing plate through a sliding block; the vertical adjustable femoral neck fixed-point offset sighting device consists of a ranging rod, a vertical adjustable offset sighting frame and a combined sleeve; the front end of the vertical adjustable offset aiming bracket vertically moves on the ranging rod through a sliding block, and an aiming hook is arranged at the tail end of the vertical adjustable offset aiming bracket; the combined sleeve is vertically fixed on the ranging rod, and an axial hole for placing a Kirschner wire is arranged in the combined sleeve;
the aiming hook is perpendicular to the vertical adjustable offset aiming bracket;
the combined sleeve is parallel to the vertical adjustable offset aiming bracket.
2. The femoral neck anterior torsion angle frame of reference-fixed point offset lead aiming cannulated nail fixation system of claim 1, wherein: the plate-shaped pressing piece and the block-shaped pressing piece of the femur neck near point positioning device are provided with scales.
3. The femoral neck anterior torsion angle frame of reference-fixed point offset lead aiming cannulated nail fixation system of claim 1, wherein: the side of the L-shaped far point locating plate is provided with a central fixing hole, at least two upper reference holes which are horizontally arranged and at least two lower reference holes which are horizontally arranged.
4. The femoral neck anterior torsion angle frame of reference-fixed point offset lead aiming cannulated nail fixation system of claim 1, wherein: the middle part of the front torsion angle measuring module is provided with a central positioning hole, and the central positioning hole can be used for a fixing needle to penetrate through to the central axis of the outer side of the proximal femur perpendicularly to the L-shaped far point positioning plate.
5. The femoral neck anterior torsion angle frame of reference-fixed point offset lead aiming cannulated nail fixation system of claim 1, wherein: the front torsion angle connecting rod is vertically connected with the femur neck pressing plate.
6. The femoral neck anterior torsion angle frame of reference-fixed point offset lead aiming cannulated nail fixation system of claim 1, wherein: the distance measuring rod is provided with scales.
7. The femoral neck anterior torsion angle frame of reference-fixed point offset lead aiming cannulated nail fixation system of claim 1, wherein: the combined sleeve comprises an outer cylinder and an inner cylinder, the inner cylinder coaxially moves in the outer cylinder, and sharp claws are arranged at the outlet ends of the inner cylinder and the outer cylinder.
8. The femoral neck anterior torsion angle frame of reference-fixed point offset lead aiming cannulated nail fixation system of claim 1, wherein: the vertical adjustable offset aiming bracket and the combined sleeve can be fixed on the ranging rod through adjusting the locking bolt.
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| Application Number | Priority Date | Filing Date | Title |
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| CN201710019266.4A CN106725820B (en) | 2017-01-11 | 2017-01-11 | Femoral neck front torsion angle reference system-fixed point offset guide needle aiming hollow nail fixing system |
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| CN201710019266.4A CN106725820B (en) | 2017-01-11 | 2017-01-11 | Femoral neck front torsion angle reference system-fixed point offset guide needle aiming hollow nail fixing system |
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| CN106725820B true CN106725820B (en) | 2023-05-16 |
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| CN110141299B (en) * | 2019-06-17 | 2024-06-04 | 中山市中医院 | Femur neck osteotomy head-turning hip-protection operation device |
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