CN111772767A - Percutaneous vertical positioning device for key points of anterior femoral neck cortex - Google Patents
Percutaneous vertical positioning device for key points of anterior femoral neck cortex Download PDFInfo
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- CN111772767A CN111772767A CN202010808743.7A CN202010808743A CN111772767A CN 111772767 A CN111772767 A CN 111772767A CN 202010808743 A CN202010808743 A CN 202010808743A CN 111772767 A CN111772767 A CN 111772767A
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- 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
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- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
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- 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
- A61B17/8897—Guide wires or guide pins
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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
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- A61B90/39—Markers, e.g. radio-opaque or breast lesions markers
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- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
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- A61B90/00—Instruments, implements or accessories specially adapted for surgery or diagnosis and not covered by any of the groups A61B1/00 - A61B50/00, e.g. for luxation treatment or for protecting wound edges
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Abstract
The invention belongs to the technical field of orthopedic surgery equipment, and relates to a percutaneous vertical positioning device for a key point of anterior femoral neck cortex, which comprises a femoral neck positioning hook connecting component, an adapter and a porous positioning guide plate; the femoral neck positioning hook connecting component is provided with a positioning hook and a probe, the adapter is connected with the femoral neck positioning hook connecting component through a vertical connecting rod, and the porous positioning guide plate is movably arranged on the adapter. The invention combines the femoral neck positioning hook connecting component, the porous positioning guide plate and the square right-angle adapter by an assembling and disassembling structure, can be suitable for the anatomical structure of the femoral neck, matches the anterior torsion angle and the anteversion angle of the femoral neck, can realize subcutaneous point selection and accurate positioning of the central point and other key points of the isthmus part of the femoral neck by being vertical to the bone cortex in front of the femoral neck externally, and lays a foundation for the success of orthopedics clinic, in particular to the internal fixation operation of femoral neck fracture.
Description
Technical Field
The invention belongs to the technical field of orthopedic surgery equipment, relates to a femoral key point positioning device, and particularly relates to a percutaneous vertical positioning device for a femoral neck anterior cortex key point.
Background
Accurate percutaneous positioning of the key points of the bone cortex in front of the femoral neck is always a clinical problem in orthopedics department. In internal fixation surgery for femoral neck fractures, all screws must run parallel to the femoral neck central axis, and percutaneous vertical positioning of the midpoint of the femoral neck isthmus and other critical points is a fundamental prerequisite for correct determination of the femoral neck central axis. The mainstream technique today is to apply a steel needle to the hip skin surface with tape, determine and mark the surface projected locations of the midpoint and other key points of the femoral neck isthmus at the skin surface by fluoroscopy, and then drill the guide needle parallel to the central axis by visual inspection and estimation. However, this operation often fails in a rare way, and the reason for this is found: in practice, the coronal plane of the femoral neck (roughly equivalent to the plane of cortical bone in front of the femoral neck) is not parallel to the coronal plane of the human body (i.e., the intraoperative perspective plane), but has an angle of 15-30 degrees (medically known as the "anterior torsion angle"). Therefore, whether the fluoroscopy or the percutaneous puncture is performed in the operation, the operation is not performed perpendicular to the bone cortex in front of the femoral neck, but is inclined 15-30 degrees from the plane, which is the root cause of the system error. In addition, the operation mode of drilling the guide pin parallel to the central axis by means of visual observation and estimation and the existence of the anteversion angle of the femoral neck inevitably cause uncontrollable random errors in the operation.
In addition, for the pathological puncture operation of the femoral neck tumor, the puncture operation needs to be accurately performed from the front of the hip to the key point of the surface of the lesion and the cortex in front of the femoral neck, and then the lesion tissue is collected by breaking through the cortical bone and entering the bone. The current mainstream technique is to insert the guide pin and the sleeve from the front by visual inspection and estimation under the X-ray fluoroscopy, and repeatedly perform fluoroscopy and adjustment of the position of the guide pin, so that not only the accurate positioning cannot be realized, but also the damage is large.
Currently, there is a clinical lack of techniques and related devices that can adapt to the femoral neck anatomy, match the femoral neck anterior torsion and anteversion angles, and accurately locate its isthmus midpoint and other critical points perpendicular to the femoral neck anterior cortex.
Disclosure of Invention
The invention aims to provide a percutaneous vertical positioning device for key points of the anterior cortex of a femoral neck, aiming at the defects of the prior art, the percutaneous vertical positioning device combines a femoral neck positioning hook connecting component, a porous positioning guide plate and a square right-angle adapter by an assembling and disassembling structure, can realize subcutaneous point selection, accurate positioning of the midpoint of the anterior cortex isthmus of the external femoral neck and other key points, and lays a foundation for the success of orthopedics clinic, in particular to the internal fixation operation of femoral neck fracture.
The technical scheme adopted by the invention is as follows:
a percutaneous vertical positioning device for key points of anterior cortex of femoral neck comprises a femoral neck positioning hook connecting component, an adapter and a porous positioning guide plate;
the femoral neck positioning hook connecting component comprises a positioning block, a horizontal transverse positioning groove and a vertical connecting hole which penetrate through the positioning block and are staggered with each other are arranged on the positioning block, a positioning hook is movably arranged in the positioning groove, a locking component used for locking the positioning hook is arranged on the positioning groove, the positioning hook can be locked and fixed by the locking component after the positioning hook moves in place in the positioning groove, the positioning hook comprises a connecting section and a functional section, the connecting section is movably arranged in the positioning groove, a right-angle hook is arranged at the front end of the functional section, a plurality of guide pin holes are arranged at the position close to the front end, and a plurality of calibration holes are arranged at the position close to the connecting section; the vertical connecting rod is movably arranged in the vertical connecting hole, a locking assembly used for locking the vertical connecting rod is arranged on the vertical connecting hole, and the vertical connecting rod can be locked and fixed by the locking assembly after the vertical connecting rod moves in place in the vertical connecting hole; the locating block is provided with a locating measuring hole which is in the same direction as the locating groove, the locating measuring hole is positioned below the locating groove, the locating measuring hole is movably provided with a probe, and the locating hook and the probe can be used for multi-point location measurement, so that whether the hook position of the locating hook is accurate or not finally can be determined, the upper and lower diameters of the femoral neck isthmus can be measured, and the middle point of the upper and lower diameters of the front cortex of the femoral neck isthmus can be found;
the universal joint is characterized in that a horizontal transverse mounting hole and a vertical connecting hole which penetrate through the adapter and are staggered with each other are formed in the adapter, a vertical connecting rod on the femoral neck positioning hook connecting component penetrates through the vertical connecting hole in the adapter, so that the adapter is positioned above the femoral neck positioning hook connecting component, the transverse mounting hole in the adapter is in the same direction as and above a positioning groove on a positioning block of the femoral neck positioning hook connecting component, a porous positioning guide plate is movably arranged in the transverse mounting hole, and locking assemblies are arranged on the transverse mounting hole and the vertical mounting hole and are respectively used for locking the porous positioning guide plate and the vertical connecting rod;
the multi-hole positioning guide plate is composed of a connecting section and a functional section, the connecting section is movably arranged in a transverse mounting hole of the adapter, a plurality of guide pin holes are arranged at the position of the functional section close to the front end, a plurality of calibration holes are arranged at the position close to the connecting section, the guide pin holes and the calibration holes on the multi-hole positioning guide plate are respectively in one-to-one correspondence with the guide pin holes and the calibration holes on the positioning hook of the femoral neck positioning hook connecting component, the distance between any guide pin hole and any calibration hole on the multi-hole positioning guide plate is equal to the distance between the corresponding guide pin hole and the corresponding calibration hole on the positioning hook, a calibration pin is movably arranged on the calibration hole, the position of the connecting section in the transverse mounting hole of the adapter is adjusted, the calibration pin on the calibration hole is vertically downward and inserted into the corresponding calibration hole on the positioning hook of the femoral neck positioning hook connecting component, thereby the guide pin holes on the multi-hole positioning guide plate are positioned right above the corresponding guide, the higher the accuracy of the alignment of the porous positioning guide plate and the positioning hook is, the more accurate the corresponding upper and lower guide pin holes are).
A further technical scheme is, the design of location hook is modular structure, including being right angle hook and the porous locating plate of "L" shape of falling, right angle hook and porous locating plate constitute by linkage segment and functional section, wherein the guide pin hole, calibration hole all set up on the functional section of porous locating plate, all set up the screw hole that the position corresponds on right angle hook and the porous locating plate (the position that sets up of screw hole generally all is on the linkage segment), be provided with fixing bolt on the screw hole, the screw hole on screwing in right angle hook and the porous locating plate with fixing bolt can make right angle hook and porous locating plate fix together side by side.
The further technical scheme is that the guide pin holes are linearly arranged, and the rows are staggered from left to right or from right to left. Because the guide pin holes have certain aperture, the guide pin holes can not accurately correspond to a certain specific size, and only if a plurality of guide pin holes are linearly arranged and are arranged from left to right or staggered from right to left between rows, a certain guide pin hole can be made to correspond to a certain size as far as possible within the range of error allowance.
The locking assembly is a bolt fixing assembly, namely the locking assembly on the femoral neck positioning hook connecting component comprises a locking bolt and a bolt hole which is arranged in any direction of the positioning block, communicated with the positioning groove or the vertical connecting hole and vertical to the positioning groove or the vertical connecting hole, and the locking bolt penetrates through the bolt hole to penetrate into the positioning groove or the vertical connecting hole to abut against the positioning hook or the vertical connecting rod tightly placed in the positioning groove or the vertical connecting hole so as to prevent the positioning hook or the vertical connecting rod from shifting. Similarly, the locking assembly on the adapter comprises a locking bolt and a bolt hole which is arranged in any direction of the adapter, communicated with the transverse mounting hole or the vertical connecting hole and vertical to the transverse mounting hole or the vertical connecting hole, and the locking bolt penetrates through the bolt hole to penetrate into the transverse mounting hole or the vertical connecting hole to abut against the porous positioning guide plate or the vertical connecting rod which is tightly pressed in the transverse mounting hole or the vertical connecting hole, so that the porous positioning guide plate or the vertical connecting rod is prevented from shifting.
The technical scheme is that the probe and the positioning hook are provided with scale marks. The length difference between the probe and the positioning hook can be directly observed to determine whether the hooking position is accurate or not and the diameter of the upper diameter and the lower diameter of the femoral neck. The antero-posterior diameter of the femoral neck can also be roughly measured by observing the antero-posterior distance between the posterior surface of the locating hook and the probe.
The invention combines the femoral neck positioning hook connecting component, the porous positioning guide plate and the square right-angle adapter by an assembling and disassembling structure, can be suitable for the anatomical structure of the femoral neck, matches the anterior torsion angle and the anteversion angle of the femoral neck, can realize subcutaneous point selection and accurate positioning of the central point and other key points of the isthmus part of the femoral neck by being vertical to the bone cortex in front of the femoral neck externally, and lays a foundation for the success of orthopedics clinic, in particular to the internal fixation operation of femoral neck fracture.
Drawings
Fig. 1 is a schematic structural view of the present invention.
Fig. 2 is an exploded schematic view of the femoral neck positioning hook attachment member of the present invention.
Fig. 3 is a schematic structural view of the positioning hook of the present invention.
Figure 4 is a schematic structural diagram of an adapter of the present invention.
FIG. 5 is a schematic view of the construction of the multihole positioning guide plate of the present invention.
Figure 6 is a schematic diagram of the arrangement of guide pin holes of the present invention.
Fig. 7 is a usage state effect diagram of the present invention.
In the figure: 1. a femoral neck positioning hook connecting component; 2. a vertical connecting rod; 3. an adapter; 4. calibrating the needle; 5. a porous positioning guide plate; 6. a probe; 7. a positioning hook; 8. calibrating the hole; 9. a guide pin hole; 10. fixing the bolt; 11. positioning blocks; 12. a vertical connecting hole; 13. positioning a groove; 14. positioning the measuring hole; 15. locking the bolt; 16. a right-angle hook; 17. a porous positioning plate; 18. a screw hole; 19. a transverse mounting hole; 20. and (6) guiding the needle.
Detailed Description
The invention will now be further described, by way of example only, and not by way of limitation, with reference to the accompanying drawings.
In the structure shown in fig. 1, the percutaneous vertical positioning device for the key point of the anterior cortex of the femoral neck provided by the invention comprises a femoral neck positioning hook connecting component 1, an adapter 3 and a porous positioning guide plate 5, wherein the femoral neck positioning hook connecting component 1 is connected with the adapter 3 through a vertical connecting rod 2, and the porous positioning guide plate 5 is arranged on the adapter 3.
The femoral neck positioning hook connecting component 1 comprises a positioning block 11, wherein the positioning block 11 is designed to be of a cuboid or cubic structure, a horizontal transverse positioning groove 13 and a vertical connecting hole 12 which penetrate through the positioning block and are staggered with each other are arranged on the positioning block, and the cross section of the positioning block is of a rectangular structure; the positioning hook 7 is movably arranged in the positioning groove 13, the positioning hook 7 is composed of a connecting section and a functional section, the connecting section is movably arranged in the positioning groove 13, a bolt hole which is communicated with the positioning groove and is vertical to the positioning groove is formed above the positioning block, a locking bolt 15 is arranged on the bolt hole, and the positioning hook 7 can be locked and fixed by screwing the locking bolt 15 after the connecting section of the positioning hook 7 is moved in place in the positioning groove 13. Location hook 7 designs to composite structure, including being right angle hook 16 and the porous locating plate 17 of "L" shape of falling, right angle hook and porous locating plate constitute by linkage segment (all designing into the rectangle structure) and functional section, the position that the functional section of porous locating plate 17 is close to the front end sets up a plurality of guide pin holes 9, the position that is close to the linkage segment sets up a plurality of calibration holes 8, all set up the screw hole 18 that the position corresponds on the linkage segment of right angle hook 16 and porous locating plate 17, be provided with on the screw hole and can fix right angle hook and porous locating plate side by side fixing together fixing bolt 10, its appearance size slightly is less than the corresponding size of constant head tank 13 after the linkage segment of right angle hook 16 and porous locating plate 17 is fixed side by side together. The vertical connecting rod 2 is movably arranged in the vertical connecting hole 12, a bolt hole which is communicated with the vertical connecting hole 12 and is perpendicular to the vertical connecting hole is formed in the side face of the positioning block, a locking bolt 15 is arranged on the bolt hole, and when the vertical connecting rod 2 moves in the vertical connecting hole 12 in place, the locking bolt 15 is screwed to lock and fix the vertical connecting rod 2. A positioning measuring hole 14 in the same direction as the positioning groove is formed in the positioning block 11, the positioning measuring hole 14 is located below the positioning groove 13, and a probe 6 is movably arranged on the positioning measuring hole; the probe and the positioning hook are provided with scale marks, and whether the hook positions are accurate or not and the diameter of the upper diameter and the lower diameter of the femoral neck is determined by observing the length difference of the probe and the positioning hook. The antero-posterior diameter of the femoral neck can also be roughly measured by observing the antero-posterior distance between the posterior surface of the locating hook and the probe.
The adapter 3 designed by the invention is designed into a square right-angle structure (as shown in figure 4), one right-angle side is provided with a horizontal transverse mounting hole 19 which penetrates through the adapter, the other right-angle side is provided with a vertical connecting hole which corresponds to the vertical connecting hole 12 on the positioning block 11 of the femoral neck positioning hook connecting component 1, the transverse mounting hole 19 and the vertical connecting hole on the adapter 3 are staggered with each other, and the cross section of the horizontal mounting hole and the vertical connecting hole are both rectangular structures; the vertical connecting rod 2 on the femoral neck positioning hook connecting component penetrates through a vertical connecting hole on the adapter, so that the adapter is positioned above the femoral neck positioning hook connecting component, a transverse mounting hole 19 on the adapter is in the same direction as and above a positioning groove 13 on a positioning block of the femoral neck positioning hook connecting component, a porous positioning guide plate is movably arranged in the transverse mounting hole 19, locking components (which are screwed, pressed and tightly pressed by using a locking bolt 15 and achieve the effect of locking and fixing) which are the same as the locking components on the femoral neck positioning hook connecting component 1 are respectively arranged on the transverse mounting hole and the vertical mounting hole, and the vertical connecting rod 2 and the porous positioning guide plate can be locked by using the locking components after moving to the right place;
the multi-hole positioning guide plate 5 designed by the invention is composed of a connecting section and a functional section (as shown in figure 5), wherein the connecting section is in a rectangular structure and is movably arranged in a transverse mounting hole 19 of an adapter (the connecting section adopts the rectangular structure, is not only matched with the transverse mounting hole 19, but also is beneficial to locking and fixing), a plurality of guide pin holes 9 are arranged at the position of the functional section close to the front end, a plurality of calibration holes 8 are arranged at the position of the functional section close to the connecting section, the guide pin holes and the calibration holes on the multi-hole positioning guide plate are respectively in one-to-one correspondence with the guide pin holes and the calibration holes on the positioning hook of the femoral neck positioning hook connecting component, the distance between any guide pin hole and any calibration hole on the multi-hole positioning guide plate is equal to the distance between the corresponding guide pin hole and the corresponding calibration. When the positioning hook 7 is moved in place and fixed in the positioning groove 13 on the femoral neck positioning hook connecting component 1, the position of the connecting section of the multi-hole positioning guide plate 5 in the transverse mounting hole 19 of the adapter 3 is adjusted, so that the calibration pins 4 on the calibration holes 8 are vertically downward and inserted into the corresponding calibration holes on the positioning hook of the femoral neck positioning hook connecting component, and as the guide pin holes 9 and the calibration holes 8 on the multi-hole positioning guide plate 5 are all in one-to-one correspondence with the guide pin holes 9 and the calibration holes 8 on the positioning hook of the femoral neck positioning hook connecting component, the guide pin holes 9 on the multi-hole positioning guide plate are positioned right above the corresponding guide pin holes 9 on the positioning hook of the femoral neck positioning hook connecting component (the more the number of the calibration holes is, the higher the aligning accuracy of the multi-hole positioning guide plate and the positioning hooks is, and the more the.
In the implementation of the present invention, since the guide pin holes 9 have a certain aperture, they cannot correspond to a specific size accurately, and in order to make a certain guide pin hole correspond to a certain size as much as possible within the allowable error range, the present invention arranges a plurality of guide pin holes in a linear shape, and the guide pin holes are staggered from left to right or from right to left between rows, as shown in fig. 6.
The working principle of the invention is as follows:
when the accurate positioning of the midpoint and other key points of the percutaneous anterior femoral neck cortical isthmus is needed, as shown in fig. 7, the vertical connecting rod 2 is vertically inserted into the vertical connecting hole 12 on the positioning block and is locked and fixed by the locking bolt 15, the right-angle hook 16 of the positioning hook 7 and the connecting section of the porous positioning plate 17 are respectively inserted into the positioning groove 13 and are moved to the right position, then the right-angle hook 16 and the porous positioning plate 17 are fixed together side by the fixing bolt 10 (firstly, the right-angle hook is transversely inserted and tightly attached to the anterior cortex of the femoral neck, the right-angle hook is rotated 90 degrees, the inner lower part and the functional section of the right-angle hook, which hook the femoral neck, are tightly attached to the anterior cortex of the femoral neck, the edges of the right-angle hook and the porous positioning plate are inserted in parallel, the fixing bolt fixes the right. Install the vertical connecting hole of square right angle form adapter 3 in the upper end of vertical connecting rod 2 and fixed with locking bolt 15 locking, at this moment, adapter 3 is located the locating piece top of thighbone neck location hook connecting component 1, and the horizontal mounting hole 19 of adapter 3 is located the constant head tank 13 on the locating piece directly over, insert horizontal mounting hole 19 with the linkage segment of porous location deflector 5, the adjustment makes the activity set up calibration needle 4 on porous location deflector 5 calibration hole can be perpendicular downwards and insert the corresponding calibration hole on the location hook of thighbone neck location hook connecting component, then fix porous location deflector 5 locking in horizontal mounting hole 19 with locking bolt 15, accomplish the device installation. Because of the guide pin hole one-to-one correspondence of the guide pin hole on the porous positioning guide plate 5 and the guide pin hole on the positioning hook of the femoral neck positioning hook connecting component, the device after the installation is completed has the advantage that the guide pin hole right below (vertical direction) on the porous positioning guide plate 5 is just the corresponding guide pin hole on the positioning hook of the femoral neck positioning hook connecting component.
Hooking the front end of the positioning hook 7 on the isthmus of the femoral neck, ensuring that the surface of the positioning hook 7 is parallel to the upper surface of the femoral neck, selecting a proper positioning measuring hole 14, enabling the probe 6 to penetrate through the positioning measuring hole 13 to abut against the near end of the cortex of the femoral neck bone, determining the coordinate position of the middle point of the anterior cortex isthmus of the femoral neck or the bone surface coordinate position of a required key point according to the operation requirement by observing the length difference between the probe 6 and the positioning hook 7 or the length difference between the probe 6 and the positioning hook 7 so as to obtain the size of the upper and lower diameters of the femoral neck, after being matched with the CT scanning result, determining the corresponding guide pin hole on the porous positioning guide plate 5 according to the data, inserting the guide pin 20 downwards through the corresponding guide pin hole on the porous positioning guide plate 5, and enabling the guide pin hole of the positioning hook 7 to reach the middle point and other key points of the anterior cortex. The front rake angle and the front torsion angle must be matched for accurate positioning, and the front rake angle and the front torsion angle of the positioning hook can be accurately matched and adjusted by inserting the lengths of the tails of a plurality of guide pins (the total lengths of the guide pins are consistent or according to scales on the guide pins) of the porous positioning guide plate and the porous positioning plate. The specific method comprises the following steps: (1) matching an anteversion angle: the 2 nd guide pin is inserted into the far end or the near end of the first guide pin through the porous positioning guide plate, passes through the corresponding hole on the porous positioning plate to reach the anterior bone cortex of the femoral neck, and the forward inclination direction of the combined hook is adjusted to ensure that the tail scales of the two guide pins outside the porous positioning guide plate are equal, so that the matching of the combined hook and the forward inclination angle of the femoral neck can be determined. (2) Matching a front torsion angle: the inner side and the outer side of the first guide pin are respectively inserted with one guide pin (3 rd and 4 th guide pins) through the porous positioning guide plate, the guide pins penetrate through corresponding holes on the guide hole positioning plate to reach the bone cortex in front of the femoral neck, the front torsion direction of the combined hook is adjusted, the tail scales of the 1 st guide pin and the 3 rd and 4 th guide pins outside the positioning porous guide plate are equal, and the matching of the combined hook and the front torsion angle of the femoral neck can be determined. By the method, the effect of accurately positioning subcutaneous points, the midpoint of the cortical isthmus in the anterior cervical region of the external femur and other key points can be realized.
The foregoing is only a preferred embodiment of the present invention, and it should be noted that, for those skilled in the art, various modifications and decorations can be made without departing from the technical principle of the present invention, and these modifications and decorations should also be regarded as the protection scope of the present invention.
Claims (5)
1. The utility model provides a thighbone neck anterior cortex key point percutaneous vertical positioning device which characterized in that: comprises a femoral neck positioning hook connecting component, an adapter and a porous positioning guide plate;
the femoral neck positioning hook connecting component comprises a positioning block, a horizontal transverse positioning groove and a vertical connecting hole which penetrate through the positioning block and are staggered with each other are arranged on the positioning block, a positioning hook is movably arranged in the positioning groove, a locking assembly used for locking the positioning hook is arranged on the positioning groove, the positioning hook comprises a connecting section and a functional section, the connecting section is movably arranged in the positioning groove, a right-angle hook is arranged at the front end of the functional section, a plurality of guide pin holes are arranged at the position close to the front end, and a plurality of calibration holes are arranged at the position close to the connecting section; the vertical connecting holes are internally and movably provided with vertical connecting rods, and the vertical connecting holes are provided with locking assemblies for locking the vertical connecting rods; the positioning block is provided with a positioning measuring hole in the same direction as the positioning groove, the positioning measuring hole is positioned below the positioning groove, and a probe is movably arranged on the positioning measuring hole;
the universal joint is provided with a horizontal transverse mounting hole and a vertical connecting hole which penetrate through the adapter and are staggered with each other, a vertical connecting rod on the femoral neck positioning hook connecting component penetrates through the vertical connecting hole on the adapter, the transverse mounting hole on the adapter is in the same direction as and above the positioning groove on the positioning block of the femoral neck positioning hook connecting component, a multi-hole positioning guide plate is movably arranged in the transverse mounting hole, and locking assemblies are arranged on the transverse mounting hole and the vertical mounting hole;
porous location deflector comprises linkage segment and functional segment, the linkage segment activity sets up in the horizontal mounting hole of adapter, the position that the functional segment is close to the front end sets up a plurality of guide pin holes, the position that is close to the linkage segment sets up a plurality of calibration holes, the guide pin hole on the porous location deflector, the calibration hole all with the guide pin hole on the location hook of thighbone neck location hook connecting elements, calibration hole one-to-one, and the distance in arbitrary guide pin hole and arbitrary calibration hole on the porous location deflector equals with the distance in corresponding calibration hole with the corresponding guide pin hole on the location hook, the activity sets up the calibration needle on the calibration hole.
2. The percutaneous vertical positioning device for key points of the anterior femoral neck cortex according to claim 1, wherein: the design of location hook is modular structure, including being right angle hook and the porous locating plate of "L" shape of falling, right angle hook and porous locating plate constitute by linkage segment and functional section, and wherein guide pin hole, calibration hole all set up on the functional section of porous locating plate, all set up the screw hole that the position corresponds on right angle hook and the porous locating plate, are provided with fixing bolt on the screw hole.
3. The percutaneous vertical positioning device for key points of the anterior femoral neck cortex according to claim 1, wherein: the guide pin holes are linearly arranged, and the rows are arranged from left to right or from right to left in a staggered manner.
4. The percutaneous vertical positioning device for key points of the anterior femoral neck cortex according to claim 1, wherein: the locking assembly is a bolt fixing assembly, namely the locking assembly on the femoral neck positioning hook connecting component comprises a locking bolt and a bolt hole which is arranged in any direction of the positioning block, communicated with the positioning groove or the vertical connecting hole and vertical to the positioning groove or the vertical connecting hole; similarly, the locking assembly on the adapter comprises a locking bolt and a bolt hole which is arranged on any direction of the adapter, communicated with the transverse mounting hole or the vertical connecting hole and vertical to the transverse mounting hole or the vertical connecting hole.
5. The percutaneous vertical positioning device for key points of the anterior femoral neck cortex according to claim 1, wherein: the probe and the positioning hook are provided with scale marks.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010808743.7A CN111772767A (en) | 2020-08-12 | 2020-08-12 | Percutaneous vertical positioning device for key points of anterior femoral neck cortex |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010808743.7A CN111772767A (en) | 2020-08-12 | 2020-08-12 | Percutaneous vertical positioning device for key points of anterior femoral neck cortex |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN113693701A (en) * | 2021-09-03 | 2021-11-26 | 邓迎生 | Femoral neck surgery central axis mechanical navigation system based on individualized safety boundary |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113693701A (en) * | 2021-09-03 | 2021-11-26 | 邓迎生 | Femoral neck surgery central axis mechanical navigation system based on individualized safety boundary |
| CN113693701B (en) * | 2021-09-03 | 2023-02-17 | 邓迎生 | Femoral neck surgery central axis mechanical navigation system based on individualized safety boundary |
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