CN111281523A - Adjustable guider for implanting pedicle screw - Google Patents
Adjustable guider for implanting pedicle screw Download PDFInfo
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- CN111281523A CN111281523A CN202010148746.2A CN202010148746A CN111281523A CN 111281523 A CN111281523 A CN 111281523A CN 202010148746 A CN202010148746 A CN 202010148746A CN 111281523 A CN111281523 A CN 111281523A
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- 230000001105 regulatory effect Effects 0.000 claims description 8
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- 238000000034 method Methods 0.000 description 6
- 238000010586 diagram Methods 0.000 description 4
- 238000002513 implantation Methods 0.000 description 4
- 238000012986 modification Methods 0.000 description 3
- 230000004048 modification Effects 0.000 description 3
- 235000008331 Pinus X rigitaeda Nutrition 0.000 description 2
- 235000011613 Pinus brutia Nutrition 0.000 description 2
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- 239000004793 Polystyrene Substances 0.000 description 2
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- 238000004519 manufacturing process Methods 0.000 description 2
- 229920000915 polyvinyl chloride Polymers 0.000 description 2
- 239000004800 polyvinyl chloride Substances 0.000 description 2
- 230000002980 postoperative effect Effects 0.000 description 2
- 238000001356 surgical procedure Methods 0.000 description 2
- 208000010392 Bone Fractures Diseases 0.000 description 1
- 206010008164 Cerebrospinal fluid leakage Diseases 0.000 description 1
- 206010017076 Fracture Diseases 0.000 description 1
- 208000001132 Osteoporosis Diseases 0.000 description 1
- 208000007103 Spondylolisthesis Diseases 0.000 description 1
- 210000003484 anatomy Anatomy 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000002591 computed tomography Methods 0.000 description 1
- 238000012937 correction Methods 0.000 description 1
- 238000011161 development Methods 0.000 description 1
- 238000003745 diagnosis Methods 0.000 description 1
- 201000010099 disease Diseases 0.000 description 1
- 208000037265 diseases, disorders, signs and symptoms Diseases 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 239000011521 glass Substances 0.000 description 1
- 238000005259 measurement Methods 0.000 description 1
- 210000005036 nerve Anatomy 0.000 description 1
- 229920003229 poly(methyl methacrylate) Polymers 0.000 description 1
- 239000004926 polymethyl methacrylate Substances 0.000 description 1
- 229920002223 polystyrene Polymers 0.000 description 1
- 238000002360 preparation method Methods 0.000 description 1
- 230000002035 prolonged effect Effects 0.000 description 1
- 206010041569 spinal fracture Diseases 0.000 description 1
- 230000001954 sterilising effect Effects 0.000 description 1
- 238000004659 sterilization and disinfection Methods 0.000 description 1
- 238000005728 strengthening Methods 0.000 description 1
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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
-
- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61B—DIAGNOSIS; SURGERY; IDENTIFICATION
- A61B17/00—Surgical instruments, devices or methods, e.g. tourniquets
- A61B17/34—Trocars; Puncturing needles
- A61B17/3403—Needle locating or guiding means
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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
-
- 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
- A61B17/92—Impactors or extractors, e.g. for removing intramedullary devices
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- Surgery (AREA)
- Orthopedic Medicine & Surgery (AREA)
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- Biomedical Technology (AREA)
- Heart & Thoracic Surgery (AREA)
- Nuclear Medicine, Radiotherapy & Molecular Imaging (AREA)
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- Animal Behavior & Ethology (AREA)
- General Health & Medical Sciences (AREA)
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Abstract
The invention discloses an adjustable guider for implanting a pedicle screw, which is used for determining a pedicle puncture point according to preoperative imaging data of a patient, adjusting a puncture path in a three-dimensional manner and positioning accurately. The front side of the first cross rod is provided with a lock sleeve capable of sliding back and forth along the length direction of the first cross rod, one end of the second cross rod is inserted into the lock sleeve, and the second cross rod can rotate around a shaft under the action of external force; the upper end of the first cross rod is provided with a first angle ruler which can slide back and forth along the length direction of the first cross rod; the lower end of the first cross rod is provided with at least two positioning nails which can slide to and fro along the length direction of the first cross rod; the second cross rod is provided with a second angle ruler which can slide along the length direction of the second cross rod in a reciprocating manner, and the second angle ruler can rotate around the axis of the second cross rod under the action of external force; the original point position department of second angle chi is equipped with pivoting's connecting rod, and the one end and the guide sleeve connection of second angle chi are kept away from to the connecting rod.
Description
Technical Field
The invention relates to the technical field of medical instruments, in particular to an adjustable guider for implanting a pedicle screw.
Background
The percutaneous external fixation technology of the pedicle of vertebral arch begins in 1977, and the external spinal fixation device (ESSF) is applied to a patient with spinal fracture and has good clinical curative effect. In recent years, particularly with the development of minimally invasive spine surgery, percutaneous pedicle screw technology has become a basic technical Means of Minimally Invasive Spine Surgery (MMISS), and is gradually applied to diagnosis or treatment of spine fracture, lumbar spondylolisthesis, osteoporosis, percutaneous vertebral body strengthening and kyphoplasty, lumbar instability and intervertebral disc-derived diseases. However, the conventional percutaneous puncture and pedicle screw implantation surgical operation has many limitations and drawbacks, such as: during operation, the X-ray treatment can be smoothly completed only by repeating the C-shaped arm perspective guidance or correction for many times, so that the X-ray exposure of an operator and a patient is increased, the operation time is prolonged, and the operation accuracy is difficult to ensure. At present, the computer-aided virtual X-ray navigation technology, the CT scanning navigation and the ultrasonic scanning navigation can be used for successfully completing the implantation of the percutaneous pedicle screw, the puncture accuracy is higher, but the needed equipment is expensive and has quite high cost, and the popularization and the application in clinic are difficult.
At present, scholars at home and abroad develop various percutaneous pedicle positioning auxiliary devices for percutaneous pedicle screw implantation positioning, but the defects of complex structure, complicated operation, incapability of omnibearing adjustment, large positioning deviation, high price and the like exist, and a really ideal pedicle screw implantation positioning guide device is not reported at present.
Disclosure of Invention
In order to solve the defects of the prior art, the invention provides an adjustable guider for inserting pedicle screws, which is used for determining pedicle puncture points according to preoperative imaging data of a patient, adjusting puncture paths in a three-dimensional manner, and is accurate in positioning and flexible to use.
The technical purpose of the invention is realized by the following technical scheme:
an adjustable guider for placing a pedicle screw comprises a first cross rod, a second cross rod, a guide sleeve and a road-opening cone, wherein the front end of the road-opening cone penetrates through the guide sleeve and is detachably connected with the guide sleeve, a lock sleeve capable of sliding back and forth along the length direction of the first cross rod is arranged on the front side of the first cross rod, and the lock sleeve is fixed with the first cross rod through a first adjusting piece; one end of the second cross rod is inserted into the lock sleeve along the direction vertical to the first cross rod, the second cross rod can rotate around the shaft under the action of external force, and the second cross rod is fixed with the lock sleeve through a second adjusting piece; the upper end of the first cross rod is detachably connected with a first angle ruler capable of sliding in a reciprocating manner along the length direction of the first cross rod, the first angle ruler is fixed with the first cross rod through a third adjusting piece, and the plane of the first angle ruler is perpendicular to the second cross rod; the lower end of the first cross rod is at least provided with two positioning nails capable of sliding in a reciprocating manner along the length direction of the first cross rod, the positioning nails are perpendicular to the first cross rod, and the positioning nails are fixed with the first cross rod through a fourth adjusting piece;
the second cross rod is detachably connected with a second angle ruler capable of sliding back and forth along the length direction of the second cross rod, the plane of the second angle ruler is perpendicular to the plane of the first angle ruler, the second angle ruler can rotate around the axis of the second cross rod under the action of external force, and the second angle ruler is fixed with the second cross rod through a fifth adjusting piece; the original point position department of second angle chi can dismantle and be connected with a pivoting's connecting rod, the connecting rod is fixed with the second angle chi through seventh regulating part, the one end that the second angle chi was kept away from to the connecting rod with guide sleeve connects, the connecting rod with guide sleeve is perpendicular.
Furthermore, a first sliding groove is formed in the front side of the first cross rod, a first sliding block matched with the first sliding groove is arranged at one end, away from the second cross rod, of the lock sleeve, and the first sliding block is clamped in the first sliding groove and is in sliding fit with the first sliding groove; the first adjusting piece is a screw or a bolt, a first long groove communicated with the first sliding groove is formed in the upper end of the first cross rod, and the front end of the first adjusting piece penetrates through the first long groove and is in threaded connection with the first sliding block.
Furthermore, the second cross rod is a cylindrical rod, the second adjusting piece is a screw or a bolt, a first screw hole communicated with the inside of the lock sleeve is formed in the side wall of the lock sleeve, and the second adjusting piece is in threaded connection with the first screw hole so as to fix the lock sleeve and the second cross rod.
Furthermore, a second sliding groove is formed in the upper end of the first cross rod, one end of the second sliding groove extends to the end face of one end of the second cross rod, a second sliding block matched with the second sliding groove is arranged on the edge of the first angle scale, the second sliding block is parallel to a zero scale mark of the second angle scale, and the second sliding block is clamped in the second sliding groove and is in sliding fit with the second sliding groove; the third adjusting piece is a screw or a bolt, a second long groove communicated with the second sliding groove is formed in the back face of the first cross rod, and the front end of the third adjusting piece penetrates through the second long groove and is in threaded connection with the second sliding block.
Furthermore, a third sliding groove is formed in the lower end of the first cross rod, a third sliding block matched with the third sliding groove is arranged at the upper end of the positioning nail, and the third sliding block is clamped in the third sliding groove and is in sliding fit with the third sliding groove; the fourth adjusting piece is a screw or a bolt, a third long groove communicated with the third sliding groove is formed in the back face of the first cross rod, and the front end of the fourth adjusting piece penetrates through the third long groove and is in threaded connection with the third sliding block.
Furthermore, a first sliding sleeve in sliding fit with the second cross rod is arranged at the edge of the second angle ruler, and the first sliding sleeve is parallel to a zero graduation line of the second angle ruler; the fifth adjusting part is a screw or a bolt, a second screw hole communicated with the inside of the first sliding sleeve is formed in the side wall of the first sliding groove, and the fifth adjusting part is in threaded connection with the second screw hole so as to fix the second angle ruler with the second cross rod.
Furthermore, a connecting sleeve matched with the connecting rod is arranged at the position of the original point of the second angle scale, the axis of the connecting sleeve passes through the original point of the second angle scale, and one end, far away from the guide sleeve, of the connecting rod is inserted into the connecting sleeve; the seventh adjusting part is a screw or a bolt, a fourth screw hole communicated with the inside of the connecting sleeve is formed in the side wall of the connecting sleeve, and the seventh adjusting part is in threaded connection with the fourth screw hole so as to fix the connecting rod and the second angle ruler.
Further, the first angle ruler and the second angle ruler are both made of transparent materials.
Further, be equipped with the scale pointer on the connecting rod, the scale pointer with the uide bushing syntropy sets up, works as when connecting rod and second angle chi are fixed, the distance between scale pointer and the second angle chi is 1 ~ 2 mm.
Compared with the prior art, the invention has the following beneficial effects:
firstly, three-dimensional adjustment of a puncture path can be realized, including adjustment of the distance between the vertebral pedicles on the same vertebral body and two sides, adjustment of the distance between the vertebral pedicles on adjacent vertebral bodies, and adjustment of included angles between the central axis (puncture screw) of the vertebral pedicle and the sagittal plane and the horizontal plane of a machine body, so that individualized nail placement can be realized, and the three-dimensional adjustable screw has the characteristics of accurate positioning, flexible use and the like; not only avoids injuring the dural sac and nerve root in the vertebral canal by mistake, but also avoids serious complications such as cerebrospinal fluid leakage and the like, and effectively improves the safety.
Secondly, the adjustable guider has simple structure, lower manufacturing cost and convenient use, and is suitable for popularization and use.
Drawings
FIG. 1 is a schematic view of the overall structure of the present invention (from a front perspective);
FIG. 2 is a schematic view of the overall structure of the present invention (from a back view);
FIG. 3 is an enlarged view at A in FIG. 2;
FIG. 4 is a block diagram of a first cross bar of the present invention;
FIG. 5 is a block diagram of the sleeve of the present invention;
FIG. 6 is a block diagram of a tack of the present invention;
FIG. 7 is a block diagram of a first angle scale of the present invention;
FIG. 8 is a longitudinal cross-sectional view of a first cross-bar of the present invention;
fig. 9 is a structural view of the guide sleeve of the present invention.
In the figure: 1. a first cross bar; 11. a first chute; 111. a first slider; 112. a first adjustment member; 113. a first elongated slot; 114. a lock sleeve; 115. a second adjustment member; 12. a second chute; 121. a first angle scale; 122. a second slider; 123. a third adjustment member; 124. a second elongated slot; 13. a third chute; 131. positioning nails; 132. a third slider; 133. a fourth adjustment member; 134. a third elongated slot; 2. a second cross bar; 21. a first sliding sleeve; 211. a fifth adjustment member; 23. a second angle ruler; 231. connecting sleeves; 232. a seventh adjustment member; 3. a guide sleeve; 31. an open-circuit cone; 32. an eighth adjustment member; 33. a connecting rod; 34. and (4) a scale pointer.
Detailed Description
The present invention will be described in further detail with reference to the accompanying drawings.
In the description of the present invention, it is to be understood that the terms "front", "back", "upper", "lower", "left", "right", "inner", "outer", and the like, indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings, are only for convenience in describing the present invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and thus, should not be construed as limiting the present invention.
Furthermore, the terms "horizontal", "vertical" and the like do not imply that the components are required to be absolutely horizontal or pendant, but rather may be slightly inclined. For example, "horizontal" merely means that the direction is more horizontal than "vertical" and does not mean that the structure must be perfectly horizontal, but may be slightly inclined.
In the description of the present invention, it should also be noted that, unless otherwise explicitly specified or limited, the terms "disposed," "connected," and "connected" are to be construed broadly, e.g., as meaning fixedly connected, detachably connected, or integrally connected; they may be mechanically coupled, directly coupled, indirectly coupled through intervening media, or may be interconnected between two elements. The specific meanings of the above terms in the present invention can be understood by those skilled in the art according to specific situations.
The first embodiment is as follows:
an adjustable guider for implanting pedicle screws is shown in figures 1-9 and comprises a first cross rod 1, a second cross rod 2, a guide sleeve 3 and an open-circuit cone 31, wherein the front end of the open-circuit cone 31 penetrates through the guide sleeve 3 and is detachably connected with the guide sleeve 3; specifically, the side wall of the guide sleeve 3 in this embodiment is provided with a screw hole (not shown in the figure), the front end of the open-circuit cone 31 passes through the guide sleeve 3 and then is fixed with the guide sleeve 3 through an eighth adjusting member 32 which is connected to the screw hole by a thread, and the open-circuit cone 31 can be detached for sterilization after operation; it should be noted that, the eighth adjusting element 32 in this embodiment is a screw, which is convenient to disassemble and assemble, and it should be understood that the eighth adjusting element 32 is not limited to the embodiment shown, but may also be a bolt or other fastening element adapted to the screw, which is shown in this embodiment and does not affect the protection scope of the present invention.
The front side of the first cross bar 1 is provided with a lock sleeve 114 capable of sliding back and forth along the length direction of the first cross bar, and the lock sleeve 114 is fixed with the first cross bar 1 through a first adjusting piece 112; one end of the second cross bar 2 is inserted into the lock sleeve 114 along the direction vertical to the first cross bar 1, the second cross bar 2 can rotate around a shaft under the action of external force, and the second cross bar 2 is fixed with the lock sleeve 114 through a second adjusting piece 115; the upper end of the first cross rod 1 is detachably connected with a first angle ruler 121 capable of sliding back and forth along the length direction of the first cross rod, the first angle ruler 121 is fixed with the first cross rod 1 through a third adjusting piece 123, and the plane of the first angle ruler 121 is perpendicular to the second cross rod 2; the lower end of the first cross rod 1 is at least provided with two positioning nails 131 capable of sliding in a reciprocating manner along the length direction of the first cross rod, the positioning nails 131 are perpendicular to the first cross rod 1, and the positioning nails 131 are fixed with the first cross rod 1 through a fourth adjusting piece 133. It should be noted that the number of the positioning pins 131 in the present invention may be two, three, four or more, and two positioning pins 131 are provided in this embodiment, which does not affect the protection scope of the present invention.
As a further embodiment of the present invention, the front side of the first cross bar 1 in this embodiment is provided with a first sliding slot 11, one end of the lock sleeve 114 far away from the second cross bar 2 is provided with a first sliding block 111 adapted to the first sliding slot 11, and the first sliding block 111 is clamped in the first sliding slot 11 and is in sliding fit therewith; the first adjusting member 112 is a screw or a bolt, the upper end of the first cross bar 1 is provided with a first long groove 113 communicated with the first sliding groove 11, and the front end of the first adjusting member 112 penetrates through the first long groove 113 and is in threaded connection with the first sliding block 111. Specifically, the first cross bar 1 in this embodiment is a quadrangular prism, and the first chute 11 is a T-shaped groove; when the position of the lock sleeve 114 needs to be adjusted, the first adjusting piece 112 only needs to be unscrewed, and the adjustment is convenient and quick; it should be understood that the first cross bar 1 of the present invention is not limited to the embodiment, but may also be a cylinder with a suitable cross-sectional shape, such as a cylindrical rod, a regular octagonal prism, etc., and the first sliding groove 11 may also be other sliding grooves with large inside and small outside, which is shown in the embodiment and does not affect the protection scope of the present invention.
As a further embodiment of the present invention, the second cross bar 2 in this embodiment is a cylindrical bar, the second adjusting member 115 is a screw or a bolt, a first screw hole communicating with the inside of the lock sleeve 114 is formed on a side wall of the lock sleeve 114, and the second adjusting member 115 is screwed to the first screw hole to fix the lock sleeve 114 and the second cross bar 2; second horizontal pole 2 can be dismantled, easy dismounting, portable, only need when needing to rotate second horizontal pole 2 with second regulating part 115 unscrew can, adjust convenient and fast.
As a further embodiment of the present invention, in this embodiment, the upper end of the first cross bar 1 is provided with a second sliding groove 12, one end of the second sliding groove 12 extends to one end surface of the second cross bar 2, the edge of the first angle ruler 121 is provided with a second sliding block 122 adapted to the second sliding groove 12, the second sliding block 122 is parallel to the zero scale mark of the second angle ruler 23, and the second sliding block 122 is clamped in the second sliding groove 12 and is in sliding fit therewith; the third adjusting member 123 is a screw or a bolt, a second long groove 124 communicated with the second sliding groove 12 is formed in the back of the first cross bar 1, and the front end of the third adjusting member 123 penetrates through the second long groove 124 and is in threaded connection with the second sliding block 122. Specifically, in the embodiment, the measurement range of the first angle ruler 121 is 0 to 90 degrees, the second chute 12 is a T-shaped groove, the first angle ruler 121 can be taken out from the second chute 12, the assembly and disassembly are convenient, when the fixed position of the first angle ruler 121 needs to be adjusted, only the third adjusting part 123 needs to be unscrewed, and the adjustment is convenient and fast; it is understood that the first sliding chute 11 of the present invention can also be other sliding chutes with large inside and small outside, and the present embodiment does not affect the protection scope of the present invention.
As a further embodiment of the present invention, the lower end of the first cross bar 1 in this embodiment is provided with a third sliding slot 13, the upper end of the positioning nail 131 is provided with a third sliding block 132 adapted to the third sliding slot 13, and the third sliding block 132 is clamped in and slidably engaged with the third sliding slot 13; the fourth adjusting member 133 is a screw or a bolt, a third long groove 134 communicated with the third sliding groove 13 is formed in the back of the first cross bar 1, and the front end of the fourth adjusting member 133 penetrates through the third long groove 134 and is in threaded connection with the third sliding block 132. Specifically, the third sliding groove 13 in this embodiment is a T-shaped groove, and when the fixing position of the positioning nail 131 needs to be adjusted, the fourth adjusting member 133 only needs to be loosened, so that the adjustment is convenient and fast; it is understood that the third sliding chute 13 of the present invention can also be other sliding chutes with large inside and small outside, and the protection scope of the present invention is not affected by the embodiment shown.
In this embodiment, the second cross bar 2 is detachably connected with a second angle ruler 23 capable of sliding back and forth along the length direction of the second cross bar, the plane of the second angle ruler 23 is perpendicular to the plane of the first angle ruler 121, the second angle ruler 23 can rotate around the axis of the second cross bar 2 under the action of external force, and the second angle ruler 23 is fixed with the second cross bar 2 through a fifth adjusting piece 211; the origin position department of second angle chi 23 can dismantle and be connected with a pivoting's connecting rod 33, and connecting rod 33 is fixed with second angle chi 23 through seventh regulating part 232, and the one end that second angle chi 23 was kept away from to connecting rod 33 is connected with guide sleeve 3, and connecting rod 33 is perpendicular with guide sleeve 3.
As a further embodiment of the present invention, the edge of the second angle ruler 23 in this embodiment is provided with a first sliding sleeve 21 slidably engaged with the second cross bar 2, and the first sliding sleeve 21 is parallel to the zero graduation line of the second angle ruler 23; the fifth adjusting member 211 is a screw or a bolt, a second screw hole (not shown in the figure) communicating with the inside of the first sliding sleeve 21 is formed in the side wall of the first sliding groove 11, and the fifth adjusting member 211 is in threaded connection with the second screw hole so as to fix the second angle ruler 23 with the second cross bar 2. Specifically, the measuring range of first bevel protractor 121 in this embodiment is 0-90, and the postoperative can be pulled down second bevel protractor 23 from second horizontal pole 2, easy dismounting, only need when needing to adjust the fixed position of second bevel protractor 23 and inclination can with the fifth regulating part 211 pine soon, adjust convenient and fast.
As a further embodiment of the present invention, a connection sleeve 231 adapted to the connection rod 33 is disposed at the position of the origin of the second angle ruler 23 in the present embodiment, the axis of the connection sleeve 231 passes through the origin of the second angle ruler 23, and one end of the connection rod 33 far from the guide sleeve 3 is inserted into the connection sleeve 231; the seventh adjusting member 232 is a screw or a bolt, a fourth screw hole (not shown) is formed in the side wall of the connecting sleeve 231 and communicates with the inside of the connecting sleeve 231, and the seventh adjusting member 232 is screwed into the fourth screw hole to fix the connecting rod 33 and the second angle ruler 23. Guide sleeve 3 can be pulled down from second bevel protractor 23 after the postoperative, easy dismounting, only need when needing to adjust guide sleeve 3's inclination with seventh regulating part 232 pine soon can, adjust convenient and fast.
Preferably, the first angle ruler 121 and the second angle ruler 23 in this embodiment are made of transparent materials, so as to avoid shielding the surgical field, and the use is convenient. Specifically, the first angle ruler 121 and the second angle ruler 23 in this embodiment are made of polymethyl methacrylate (commonly known as organic glass), and it is understood that the first angle ruler 121 and the second angle ruler 23 of the present invention may also be made of transparent materials such as medical PC, PVC (polyvinyl chloride), or PS (polystyrene), which are shown in this embodiment and do not affect the protection scope of the present invention.
Preferably, the connecting rod 33 in this embodiment is provided with a scale pointer 34, the scale pointer 34 is arranged in the same direction as the guide sleeve 3, and when the connecting rod 33 is fixed with the second angle ruler 23, the distance between the scale pointer 34 and the second angle ruler 23 is 1-2 mm. So as to read the scale on the second angle ruler 23, and the use is convenient.
As a further preferred embodiment of the present invention, the first angle ruler 121 and the second angle ruler 23 of the present invention can also be manufactured as a kit product during the manufacturing, for example, the first angle ruler 121 and the second angle ruler 23 measuring in the range of 0-30 °, the first angle ruler 121 and the second angle ruler 23 measuring in the range of 0-45 °, and the first angle ruler 121 and the second angle ruler 23 measuring in the range of 0-60 °, of course, the measuring ranges of the first angle ruler 121 and the second angle ruler 23 of the present invention can also be determined according to the actual requirements, and the present embodiment does not affect the protection scope of the present invention.
Example two: referring to fig. 1, the same features of this embodiment as those of the first embodiment are not repeated, and the different features of this embodiment are that only scales (not shown) are disposed on four sides of the first cross bar 1 in this embodiment, and an annular scale (not shown) is disposed on the outer side of the second cross bar 2, so that the fixing positions of the lock sleeve 114, the first angle ruler 121, the positioning nail 131 and the second angle ruler 23 can be conveniently adjusted when the lock is used, and the practicability is better.
The use method comprises the following steps:
referring to fig. 1-9:
carefully reading the front and back position sheets, the CT and the MRI before the operation to obtain a head inclination angle, a tail inclination angle, an inner inclination angle and an outer inclination angle of a pedicle anatomy shaft and obtain the relation between the pedicle and a transverse process and a superior vertebral inferior articular process so as to judge a correct screw feeding point;
preoperative preparation: inserting the first angle ruler 121 into the second chute 12 and temporarily fixing the first angle ruler, sleeving the first sliding sleeve 21 on the second cross rod 2, and temporarily fixing the second angle ruler 23 after sleeving;
① fixing the first cross bar 1 by nailing two positioning nails 131 to the vertebral plate (depth less than 2mm) so that the first cross bar 1 is parallel to the coronal plane and the transverse plane of the body of the patient;
② fixing the second cross bar 2 and the first cross bar 1, after fixing the second cross bar 2 and the lock sleeve 114, making the second cross bar 2 parallel to the sagittal plane of the body of the patient, adjusting the inclination angle of the second angle ruler 23 to make the inclination angle of the second angle ruler 23 consistent with the measured inner (outer) inclination angle (the inclination angle of the second angle ruler 23 is determined by the first angle ruler 121), fixing the connecting rod 33 on the second angle ruler 23, adjusting the inclination angle of the guide sleeve 3 according to the measured head (tail) inclination angle, at this time, the obtained position of the connecting rod 33 is the anatomical axis direction of the pedicle screw, sliding the second angle ruler 23 on the second cross bar 2 to make the connecting rod 33 align to the screw feeding point, and setting the screw according to the pedicle screw setting method.
The above embodiments are only some examples of the present invention, and are not intended to limit the present invention in any way; those skilled in the art can make numerous possible variations and modifications to the present teachings, or modify equivalent embodiments to equivalent variations, without departing from the scope of the present teachings, using the methods and techniques disclosed above. Therefore, any simple modification, equivalent replacement, equivalent change and modification made to the above embodiments according to the technical essence of the present invention are still within the scope of the protection of the technical solution of the present invention.
Claims (9)
1. The utility model provides an adjustable director for putting into pedicle of vertebral arch screw, includes first horizontal pole (1), second horizontal pole (2), guide sleeve (3) and open a way awl (31), the front end of open a way awl (31) passes guide sleeve (3) and forms rather than and can dismantle the connection, its characterized in that: a lock sleeve (114) capable of sliding in a reciprocating manner along the length direction of the first cross rod (1) is arranged on the front side of the first cross rod (1), and the lock sleeve (114) is fixed with the first cross rod (1) through a first adjusting piece (112); one end of the second cross rod (2) is inserted into the lock sleeve (114) along the direction vertical to the first cross rod (1), the second cross rod (2) can rotate around a shaft under the action of external force, and the second cross rod (2) is fixed with the lock sleeve (114) through a second adjusting piece (115); the upper end of the first cross rod (1) is detachably connected with a first angle ruler (121) capable of sliding in a reciprocating mode along the length direction of the first cross rod, the first angle ruler (121) is fixed with the first cross rod (1) through a third adjusting piece (123), and the plane where the first angle ruler (121) is located is perpendicular to the second cross rod (2); the lower end of the first cross rod (1) is at least provided with two positioning nails (131) capable of sliding in a reciprocating manner along the length direction of the first cross rod, the positioning nails (131) are perpendicular to the first cross rod (1), and the positioning nails (131) are fixed with the first cross rod (1) through a fourth adjusting piece (133);
the second cross rod (2) is detachably connected with a second angle ruler (23) capable of sliding in a reciprocating mode along the length direction of the second cross rod, the plane where the second angle ruler (23) is located is perpendicular to the plane where the first angle ruler (121) is located, the second angle ruler (23) can rotate around the axis of the second cross rod (2) under the action of external force, and the second angle ruler (23) is fixed with the second cross rod (2) through a fifth adjusting piece (211); the origin position department of second angle chi (23) can dismantle and be connected with a connecting rod (33) that can pivot, connecting rod (33) are fixed with second angle chi (23) through seventh regulating part (232), the one end that second angle chi (23) were kept away from in connecting rod (33) with guide sleeve (3) are connected, connecting rod (33) with guide sleeve (3) are perpendicular.
2. The adjustable guide for inserting pedicle screws as claimed in claim 1, wherein: a first sliding groove (11) is formed in the front side of the first cross rod (1), a first sliding block (111) matched with the first sliding groove (11) is arranged at one end, away from the second cross rod (2), of the lock sleeve (114), and the first sliding block (111) is clamped in the first sliding groove (11) and is in sliding fit with the first sliding groove; the first adjusting piece (112) is a screw or a bolt, a first long groove (113) communicated with the first sliding groove (11) is formed in the upper end of the first cross rod (1), and the front end of the first adjusting piece (112) penetrates through the first long groove (113) and is in threaded connection with the first sliding block (111).
3. The adjustable guide for inserting pedicle screws as claimed in claim 1, wherein: the second cross rod (2) is a cylindrical rod, the second adjusting piece (115) is a screw or a bolt, a first screw hole communicated with the inside of the lock sleeve (114) is formed in the side wall of the lock sleeve (114), and the second adjusting piece (115) is connected to the first screw hole in a threaded mode so that the lock sleeve (114) and the second cross rod (2) can be fixed.
4. The adjustable guide for inserting pedicle screws as claimed in claim 1, wherein: a second sliding groove (12) is formed in the upper end of the first cross rod (1), one end of the second sliding groove (12) extends to the end face of one end of the second cross rod (2), a second sliding block (122) matched with the second sliding groove (12) is arranged on the edge of the first angle scale (121), the second sliding block (122) is parallel to a zero scale mark of the second angle scale (23), and the second sliding block (122) is clamped in the second sliding groove (12) and is in sliding fit with the second sliding groove; the third adjusting piece (123) is a screw or a bolt, a second long groove (124) communicated with the second sliding groove (12) is formed in the back face of the first cross rod (1), and the front end of the third adjusting piece (123) penetrates through the second long groove (124) and is in threaded connection with the second sliding block (122).
5. The adjustable guide for inserting pedicle screws as claimed in claim 1, wherein: a third sliding groove (13) is formed in the lower end of the first cross rod (1), a third sliding block (132) matched with the third sliding groove (13) is arranged at the upper end of the positioning nail (131), and the third sliding block (132) is clamped in the third sliding groove (13) and is in sliding fit with the third sliding groove; the fourth adjusting part (133) is a screw or a bolt, a third long groove (134) communicated with the third sliding groove (13) is formed in the back of the first cross rod (1), and the front end of the fourth adjusting part (133) penetrates through the third long groove (134) and is in threaded connection with the third sliding block (132).
6. The adjustable guide for inserting pedicle screws as claimed in claim 1, wherein: a first sliding sleeve (21) in sliding fit with the second cross rod (2) is arranged at the edge of the second angle ruler (23), and the zero graduation line of the first sliding sleeve (21) and the zero graduation line of the second angle ruler (23) are parallel; fifth regulating part (211) are screw or bolt, be equipped with the inside second screw of first sliding sleeve (21) of intercommunication on the lateral wall of first spout (11), fifth regulating part (211) threaded connection in the second screw, in order to incite somebody to action second bevel protractor (23) are fixed with second horizontal pole (2).
7. The adjustable guide for inserting pedicle screws as claimed in claim 1, wherein: a connecting sleeve (231) matched with the connecting rod (33) is arranged at the position of the original point of the second angle ruler (23), the axis of the connecting sleeve (231) passes through the original point of the second angle ruler (23), and one end, far away from the guide sleeve (3), of the connecting rod (33) is inserted into the connecting sleeve (231); the seventh adjusting part (232) is a screw or a bolt, a fourth screw hole communicated with the inside of the connecting sleeve (231) is formed in the side wall of the connecting sleeve (231), and the seventh adjusting part (232) is in threaded connection with the fourth screw hole so as to fix the connecting rod (33) and the second angle ruler (23).
8. An adjustable guide for pedicle screw placement as claimed in any one of claims 1-7, wherein: the first angle ruler (121) and the second angle ruler (23) are both made of transparent materials.
9. The adjustable guide for inserting pedicle screws as claimed in claim 8, wherein: be equipped with scale pointer (34) on connecting rod (33), scale pointer (34) with uide sleeve (3) syntropy sets up, works as when connecting rod (33) are fixed with second angle chi (23), the distance between scale pointer (34) and second angle chi (23) is 1 ~ 2 mm.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010148746.2A CN111281523A (en) | 2020-03-05 | 2020-03-05 | Adjustable guider for implanting pedicle screw |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010148746.2A CN111281523A (en) | 2020-03-05 | 2020-03-05 | Adjustable guider for implanting pedicle screw |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN111281523A true CN111281523A (en) | 2020-06-16 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202010148746.2A Pending CN111281523A (en) | 2020-03-05 | 2020-03-05 | Adjustable guider for implanting pedicle screw |
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| CN (1) | CN111281523A (en) |
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| CN2754574Y (en) * | 2004-12-21 | 2006-02-01 | 华中科技大学同济医学院附属同济医院 | Vertebral arch screw implanting guider |
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| CN104138293A (en) * | 2013-05-08 | 2014-11-12 | 刘瑾 | Lumbosacral vertebrae percutaneous pedicle screw placement positioner |
| CN204318891U (en) * | 2014-10-24 | 2015-05-13 | 陈晓东 | Pedicle inserts guider |
| CN205459007U (en) * | 2016-02-24 | 2016-08-17 | 袁峰 | Percutaneous lumbar vertebrae vertebral plate articular process screw director |
| US20180296254A1 (en) * | 2017-04-12 | 2018-10-18 | Chang Gung Memorial Hospital, Linkou | Guiding apparatus for minimally invasive pedicle screws insertion |
| CN209826940U (en) * | 2019-04-09 | 2019-12-24 | 孙宜保 | Percutaneous lumbar vertebra lamina articular process screw nail placing device |
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2020
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN2754574Y (en) * | 2004-12-21 | 2006-02-01 | 华中科技大学同济医学院附属同济医院 | Vertebral arch screw implanting guider |
| CN202270060U (en) * | 2011-09-04 | 2012-06-13 | 罗小平 | Vertebral pedicle bolt angle locater |
| CN104138293A (en) * | 2013-05-08 | 2014-11-12 | 刘瑾 | Lumbosacral vertebrae percutaneous pedicle screw placement positioner |
| CN204318891U (en) * | 2014-10-24 | 2015-05-13 | 陈晓东 | Pedicle inserts guider |
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| US20180296254A1 (en) * | 2017-04-12 | 2018-10-18 | Chang Gung Memorial Hospital, Linkou | Guiding apparatus for minimally invasive pedicle screws insertion |
| CN209826940U (en) * | 2019-04-09 | 2019-12-24 | 孙宜保 | Percutaneous lumbar vertebra lamina articular process screw nail placing device |
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Application publication date: 20200616 |