CN117281598A - Jaw stretching device capable of changing direction - Google Patents
Jaw stretching device capable of changing direction Download PDFInfo
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- CN117281598A CN117281598A CN202311484596.2A CN202311484596A CN117281598A CN 117281598 A CN117281598 A CN 117281598A CN 202311484596 A CN202311484596 A CN 202311484596A CN 117281598 A CN117281598 A CN 117281598A
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- 230000006835 compression Effects 0.000 claims description 39
- 238000007906 compression Methods 0.000 claims description 39
- 238000007789 sealing Methods 0.000 claims description 18
- 230000001681 protective effect Effects 0.000 claims description 5
- 230000006978 adaptation Effects 0.000 claims description 4
- 230000000149 penetrating effect Effects 0.000 claims description 2
- 238000000034 method Methods 0.000 abstract description 4
- 210000000988 bone and bone Anatomy 0.000 description 17
- 210000001847 jaw Anatomy 0.000 description 5
- 210000004872 soft tissue Anatomy 0.000 description 4
- 230000007547 defect Effects 0.000 description 2
- 230000005489 elastic deformation Effects 0.000 description 2
- 230000003203 everyday effect Effects 0.000 description 2
- 208000014674 injury Diseases 0.000 description 2
- 230000011164 ossification Effects 0.000 description 2
- 210000003781 tooth socket Anatomy 0.000 description 2
- 208000012260 Accidental injury Diseases 0.000 description 1
- 208000032170 Congenital Abnormalities Diseases 0.000 description 1
- 206010010356 Congenital anomaly Diseases 0.000 description 1
- 206010061619 Deformity Diseases 0.000 description 1
- 206010028980 Neoplasm Diseases 0.000 description 1
- RTAQQCXQSZGOHL-UHFFFAOYSA-N Titanium Chemical compound [Ti] RTAQQCXQSZGOHL-UHFFFAOYSA-N 0.000 description 1
- 230000003416 augmentation Effects 0.000 description 1
- 230000003796 beauty Effects 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000002457 bidirectional effect Effects 0.000 description 1
- 230000005540 biological transmission Effects 0.000 description 1
- 238000004891 communication Methods 0.000 description 1
- 238000010276 construction Methods 0.000 description 1
- 230000008094 contradictory effect Effects 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 238000003384 imaging method Methods 0.000 description 1
- 230000003993 interaction Effects 0.000 description 1
- 210000004373 mandible Anatomy 0.000 description 1
- 230000002188 osteogenic effect Effects 0.000 description 1
- 230000006641 stabilisation Effects 0.000 description 1
- 238000011105 stabilization Methods 0.000 description 1
- 229910052719 titanium Inorganic materials 0.000 description 1
- 239000010936 titanium Substances 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
- A61B17/60—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 for external osteosynthesis, e.g. distractors, contractors
- A61B17/64—Devices extending alongside the bones to be positioned
- A61B17/6433—Devices extending alongside the bones to be positioned specially adapted for use on body parts other than limbs, e.g. trunk or head
-
- 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
- A61B17/60—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 for external osteosynthesis, e.g. distractors, contractors
- A61B17/64—Devices extending alongside the bones to be positioned
- A61B17/645—Devices extending alongside the bones to be positioned comprising a framework
-
- 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
- A61B17/60—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 for external osteosynthesis, e.g. distractors, contractors
- A61B17/64—Devices extending alongside the bones to be positioned
- A61B17/6491—Devices extending alongside the bones to be positioned allowing small-scale motion of bone ends
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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
- A61B17/60—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 for external osteosynthesis, e.g. distractors, contractors
- A61B17/66—Alignment, compression or distraction mechanisms
- A61B17/663—Alignment, compression or distraction mechanisms for jaw bones, e.g. subcutaneous distractors with external access
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- Health & Medical Sciences (AREA)
- Orthopedic Medicine & Surgery (AREA)
- Life Sciences & Earth Sciences (AREA)
- Surgery (AREA)
- Biomedical Technology (AREA)
- Engineering & Computer Science (AREA)
- Nuclear Medicine, Radiotherapy & Molecular Imaging (AREA)
- Heart & Thoracic Surgery (AREA)
- Medical Informatics (AREA)
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- Animal Behavior & Ethology (AREA)
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- Accommodation For Nursing Or Treatment Tables (AREA)
Abstract
The invention aims to solve the technical problem of providing the steerable jaw stretcher which can freely adjust the stretching direction according to clinical conditions and actual needs, maintain good stability, has a locking function and simplifies operation. The jaw stretching device capable of changing direction comprises a first stretching plate and a second stretching plate; the first stretching plate and the second stretching plate are connected through an adjusting device, and the adjusting device is used for adjusting the distance between the first stretching plate and the second stretching plate or the relative steering between the first stretching plate and the second stretching plate. The direction-changeable jawbone stretching device provided by the invention can change and stretch, is not overlapped by a preset track or a plurality of stretching devices, can adjust whether and how much direction change is needed in real time according to the X-ray film in the stretching process, can change the distance between the first stretching plate and the second stretching plate and the relative direction change through the adjusting device, is simple to operate, and is suitable for popularization and application in the technical field of medical appliances.
Description
Technical Field
The invention relates to the technical field of medical appliances, in particular to a steerable jawbone distractor.
Background
The jawbone defect caused by congenital deformity, trauma, tumor and the like seriously affects the beauty of the face and the occlusion function of a patient. In addition to autologous bone grafting, which is costly and risky, another way of bone augmentation is distraction osteogenesis. A distractor is a special medical instrument special for distraction osteogenesis. Most of the existing retractors can only carry out unidirectional linear retraction, and have poor applicability in the upper and lower jawbones with more special and changeable outline; secondly, the realization mode of a few types of bidirectional retractors reported by related applications at present is the superposition of two unidirectional retractors, and the direction of the retractors is fixed and cannot be adjusted at any time according to the actual illness state; finally, the existing jaw arc-shaped distractor can only stretch the corresponding bone blocks of the middle body according to the preset track length, direction and curvature, and is obviously limited in the equal-angle region of the mandible angle. Therefore, a novel jaw stretcher is urgently needed in clinical practical application to solve the defects of the prior art.
Disclosure of Invention
The invention aims to solve the technical problem of providing the steerable jaw stretcher which can freely adjust the stretching direction according to the clinical condition change and the actual requirement, maintain good stability, have the locking function and simplify the operation.
The technical scheme adopted for solving the technical problems is as follows: the jaw stretching device capable of changing direction comprises a first stretching plate and a second stretching plate;
the first stretching plate and the second stretching plate are connected through an adjusting device, and the adjusting device is used for adjusting the distance between the first stretching plate and the second stretching plate or the relative steering between the first stretching plate and the second stretching plate.
Further, the first stretching plate comprises a first transverse plate and a first vertical plate, the lower end of the first vertical plate is arranged at the left end of the first transverse plate, the first transverse plate and the first vertical plate are perpendicular to each other, and a plurality of first mounting holes are formed in the upper surface of the first transverse plate and uniformly distributed along the length direction of the first transverse plate;
the second stretch board includes fixed plate and fly leaf, the fixed plate includes second diaphragm, second riser, the lower extreme setting of second riser is at the left end of second diaphragm and the two mutually perpendicular, the surface of second diaphragm is provided with the rectangle spout that runs through from top to bottom, the right side wall of rectangle spout and the right-hand member face coincidence of second diaphragm, the fly leaf includes third diaphragm, third riser, the front and back width looks adaptation of third diaphragm, third riser all with the front and back width looks adaptation of rectangle spout, the lower extreme setting of third riser is at the left end of third diaphragm and the two mutually perpendicular, the third diaphragm is located the rectangle spout, the upper surface of third diaphragm is provided with a plurality of second mounting holes and along its length direction equipartition.
Further, the adjusting device comprises a first connecting cylinder and a second connecting cylinder;
the second vertical plate is provided with a first round hole, the right end of the first connecting cylinder and the left end of the second connecting cylinder are respectively arranged in the first round hole through bearings, and a gap exists between the first round hole and the second round hole;
the third vertical plate is provided with a threaded hole, the outer side wall of the second connecting cylinder is provided with external threads matched with the threaded hole, and the third vertical plate is sleeved on the second connecting cylinder through the threaded hole and is in threaded connection with the second connecting cylinder;
the right end of the inner cavity of the first connecting cylinder is provided with a first annular gear, and the left side of the inner cavity of the second connecting cylinder is provided with a second annular gear;
the right end of the second connecting cylinder is provided with a sealing plate, the second connecting cylinder is internally provided with an operating rod, the right end of the operating rod penetrates through the sealing plate and then extends to the right side of the sealing plate, the left end of the operating rod extends to the right end of an inner cavity of the first connecting cylinder, the left end of the operating rod is sleeved with a first gear matched with the first annular gear, the left middle part of the operating rod is sleeved with a second gear matched with the second annular gear, in an initial state, the second gear is positioned in the second annular gear, the first gear is separated from the first annular gear, and the right end of the inner cavity of the second connecting cylinder is provided with a positioning structure used for meshing the first gear with the first annular gear or meshing the second gear with the second annular gear;
the right end of the first connecting cylinder is sleeved with a third gear, the middle part of the upper end face of the second vertical plate is provided with a first sector plate through a rotating shaft, the lower surface of the first sector plate is provided with a tooth socket matched with the third gear, and the second gear is meshed with the tooth socket on the lower surface of the second vertical plate;
the left end of the first connecting cylinder is provided with a fourth vertical plate which is perpendicular to the first vertical plate, a gap exists between the fourth vertical plate and the first transverse plate, the upper end face of the fourth vertical plate is provided with a second sector plate, the right end face of the second sector plate is overlapped with the right surface of the fourth vertical plate, and the second sector plate is connected with the upper end of the first vertical plate through a locking structure;
the front end of the right end face of the second sector plate is provided with a first arc-shaped rack, the radian of the first arc-shaped rack and the radian of the first arc-shaped rack are the same, the side wall of the first connecting cylinder is provided with a rotating shaft, the upper end of the rotating shaft is provided with a fourth gear through a bearing sleeve and is positioned between the first arc-shaped rack and the first sector plate, the arc-shaped end face of the first sector plate is provided with a second arc-shaped rack, and the fourth gear is meshed with the first arc-shaped rack and the second arc-shaped rack respectively.
Further, the positioning structure comprises a first fixed ring, a second fixed ring and a first compression spring;
the first fixed ring is arranged at the right end of the inner cavity of the second connecting cylinder, the outer diameter of the first fixed ring is the same as the inner diameter of the second connecting cylinder, and the inner diameter of the first fixed ring is larger than the outer diameter of the first compression spring;
the second fixed ring is sleeved on the operating rod and positioned at the left side of the first fixed ring, and the outer diameter of the second fixed ring is equal to the inner diameter of the second connecting cylinder and is in sliding contact with the second connecting cylinder;
the first compression spring is sleeved on the operating rod, the left end of the first compression spring is arranged on the second fixed circular ring, and the right end of the first compression spring is arranged on the sealing plate; when the first compression spring is in a natural extension state in the initial state, the first gear is meshed with the first annular gear and the second gear is separated from the second annular gear when the second fixed annular ring is contacted with the first fixed annular ring.
Further, the locking structure comprises a rectangular blind hole arranged on the upper end face of the first vertical plate, a plurality of second compression springs are vertically arranged at the bottom of the rectangular blind hole, a lifting plate is arranged above the plurality of second compression springs, a clamping plate is arranged on the upper end face of the lifting plate, and the longitudinal section of the clamping plate is a right triangle;
the lower surface of second sector plate is provided with a plurality of draw-in grooves with cardboard looks adaptation, and a plurality of draw-in grooves are arranged at the lower surface of second sector plate with the mode of circumference array, and during initial state, a plurality of second compression springs are in compression state and the cardboard is located one draw-in groove of a plurality of draw-in grooves.
Further, the top of third gear is provided with the guard plate and has the clearance between the two, the left end of guard plate passes through the bracing piece setting on the lateral wall of first connecting cylinder, the right-hand member of guard plate passes through the bolt structure setting in the upper end of second riser.
Further, the outer side of the third vertical plate is provided with a U-shaped protective shell, and the length of the U-shaped protective shell is equal to the distance between the second vertical plate and the sealing plate.
The beneficial effects of the invention are as follows:
the steerable jawbone stretching device provided by the invention can be used for steering stretching, and is not overlapped by a preset track or a plurality of stretching devices. In the stretching process, the stretching speed and direction can be precisely adjusted in real time in multiple stages according to the imaging examination result of the patient. During adjustment, the distance and the relative steering between the first stretching plate and the second stretching plate are changed through the arranged adjusting device, and the accurate adjustment of the relative distance and the relative angle between two bone blocks can be realized only by operating a single component of the operating rod.
Drawings
FIG. 1 is a schematic view of the steerable jawbone distractor of the present invention;
FIG. 2 is a schematic view of a first tensioning plate, a second sector plate, a fourth riser, and a locking mechanism according to the present invention;
FIG. 3 is a perspective view of a first riser, lifter plate, clamp plate, and second compression spring combination according to the present invention;
FIG. 4 is a schematic view of a first connecting cylinder, a second connecting cylinder and a movable plate combination according to the present invention;
FIG. 5 is a schematic view of a first connecting cylinder, a second connecting cylinder and a lever assembly according to the present invention;
FIG. 6 is an enlarged view of a portion of FIG. 5A;
FIG. 7 is a perspective view showing the internal structure of the first and second connecting cylinders according to the present invention;
FIG. 8 is a schematic structural view of the internal structures of the first and second connecting cylinders according to the present invention;
FIG. 9 is a schematic view of the construction of a second tension plate according to the present invention;
FIG. 10 is a schematic view of the structure of an embodiment of the present invention with a U-shaped protective housing and sealing plate;
FIG. 11 is a schematic view of an embodiment of the lever and seal plate of the present invention;
the figure indicates: the first stretching plate 1, the first transverse plate 101, the first vertical plate 102, the first mounting hole 2, the second stretching plate 3, the fixed plate 301, the second transverse plate 3011, the second vertical plate 3012, the movable plate 302, the third transverse plate 3021, the third vertical plate 3022, the rectangular sliding groove 4, the positioning line 5, the second mounting hole 6, the first connecting cylinder 7, the second connecting cylinder 8, the first round hole 9, the threaded hole 10, the first annular gear 11, the second annular gear 12, the operating rod 13, the first gear 14, the second gear 15, the third gear 16, the first sector plate 17, the fourth sector plate 18, the second sector plate 19, the first arc rack 20, the fourth gear 21, the second arc rack 22, the first fixed ring 23, the second fixed ring 24, the first compression spring 25, the second compression spring 26, the lifting plate 27, the clamping plate 28, the clamping groove 29, the protection plate 30, the U-shaped protection housing 31, the sealing plate 32, the rectangular blind hole 33, and the scale line 34.
Detailed Description
The following detailed description of the invention, taken in conjunction with the accompanying drawings, will make it apparent that the embodiments described are merely some, but not all, examples of the present application. All other embodiments, which can be made by one of ordinary skill in the art based on the embodiments herein without making any inventive effort, are intended to be within the scope of the present application.
It should be noted that, in the embodiments of the present application, all directional indicators such as "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", etc. indicate directions or positional relationships based on the directions or positional relationships shown in the drawings, which are merely for convenience of describing the present invention and simplifying the description, and do not indicate or imply that the device or element to be referred to must have a specific direction, be configured and operated in a specific direction, and thus should not be construed as limiting the present invention, but merely serve to explain the relative positional relationships, movement situations, etc. between the components in a specific posture, and if the specific posture is changed, the directional indicators are correspondingly changed.
In the present application, unless explicitly specified and limited otherwise, the terms "coupled," "secured," and the like are to be construed broadly, and for example, "secured" may be either permanently attached or removably attached, or integrally formed; can be mechanically or electrically connected; either directly or indirectly, through intermediaries, or both, may be in communication with each other or in interaction with each other, unless expressly defined otherwise. The specific meaning of the terms in this application will be understood by those of ordinary skill in the art as the case may be.
In addition, if there is a description of "first", "second", etc. in the embodiments of the present application, the description of "first", "second", etc. is for descriptive purposes only and is not to be construed as indicating or implying a relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defining "a first" or "a second" may explicitly or implicitly include at least one such feature. In addition, the meaning of "and/or" as it appears throughout includes three parallel schemes, for example "A and/or B", including the A scheme, or the B scheme, or the scheme where A and B are satisfied simultaneously. In addition, the technical solutions of the embodiments may be combined with each other, but it is necessary to base that the technical solutions can be realized by those skilled in the art, and when the technical solutions are contradictory or cannot be realized, the combination of the technical solutions should be regarded as not exist and not within the protection scope of the present application.
As shown in fig. 1-10, the steerable jawbone distractor comprises a first distractor plate 1 and a second distractor plate 3;
the first stretching plate 1 and the second stretching plate 3 are connected through an adjusting device, the first stretching plate 1 and the second stretching plate 3 are respectively fixed on the surfaces of two bone blocks to be stretched, the adjusting device is used for adjusting the distance between the first stretching plate 1 and the second stretching plate 3 or the relative rotation between the first stretching plate 1 and the second stretching plate 3, stretching is generally started in a circle after operation, firstly, an X-ray film retaining file is photographed, the initial stretching direction is determined, real-time adjustment is carried out according to clinical condition changes and actual needs through the adjusting device in the stretching process, the distance between the first stretching plate 1 and the second stretching plate 3 or the relative rotation between the first stretching plate 1 and the second stretching plate 3 can be independently adjusted, the distance between the first stretching plate 1 and the second stretching plate 3 and the relative rotation between the first stretching plate 1 and the second stretching plate 3 can also be adjusted at the same time, and a doctor can select according to actual needs.
As shown in fig. 1, in this example, as a preferred embodiment, the first tension plate 1 includes a first transverse plate 101 and a first vertical plate 102, the lower end of the first vertical plate 102 is disposed at the left end of the first transverse plate 101, and the lower end of the first vertical plate 102 is perpendicular to the left end of the first transverse plate, a plurality of first mounting holes 2 are disposed on the upper surface of the first transverse plate 101 and are uniformly distributed along the length direction of the first transverse plate, and a plurality of titanium nails respectively pass through the plurality of first mounting holes 2 to fix the first transverse plate 101 on the surface of a bone block, so that the first tension plate 1 and the bone block can be fixedly connected;
as shown in fig. 4 and 9, the second stretching plate 3 includes a fixed plate 301 and a movable plate 302, the fixed plate 301 includes a second transverse plate 3011 and a second vertical plate 3012, the lower end of the second vertical plate 3012 is disposed at the left end of the second transverse plate 3011 and is perpendicular to the second transverse plate 3011, the surface of the second transverse plate 3011 is provided with a rectangular sliding groove 4 penetrating up and down, the right end of the rectangular sliding groove 4 is of an open design, the movable plate 302 includes a third transverse plate 3021 and a third vertical plate 3022, the front-back width of the third transverse plate 3021 and the front-back width of the third vertical plate 3022 are both matched with the front-back width of the rectangular sliding groove 4, the lower end of the third vertical plate 3022 is disposed at the left end of the third transverse plate 3021 and is perpendicular to each other, the third transverse plate 3021 is disposed in the rectangular sliding groove 4 and can freely slide along the length direction of the rectangular sliding groove 4, the upper surface of the third transverse plate 3021 is provided with a plurality of second mounting holes 6 and a plurality of mounting blocks along the length direction of the second mounting holes 3022, the second transverse plate 3022 can also pass through the second transverse plate 101 and the distance between two opposite adjusting blocks, and the distance between the two opposite adjusting devices can also be realized.
As shown in fig. 1, 2 and 4-9, in this example, preferably, the adjusting device comprises a first connecting cylinder 7 and a second connecting cylinder 8;
the second vertical plate 3012 is provided with a first round hole 9, the right end of the first connecting cylinder 7 and the left end of the second connecting cylinder 8 are respectively arranged in the first round hole 9 through bearings, the inner diameters of the first connecting cylinder 7 and the second connecting cylinder 8 are the same, central axes of the first connecting cylinder 7 and the second connecting cylinder 8 are coincident, a gap exists between the right end face of the first connecting cylinder 7 and the left end face of the second connecting cylinder 8, namely the independent rotation of the first connecting cylinder 7 and the second connecting cylinder 8 is not affected;
the third vertical plate 3022 is provided with a threaded hole 10, the outer side wall of the second connecting cylinder 8 is provided with external threads matched with the threaded hole 10, and the third vertical plate 3022 is sleeved on the second connecting cylinder 8 through the threaded hole 10 and is in threaded connection with the second connecting cylinder 8;
the right end of the inner cavity of the first connecting cylinder 7 is provided with a first annular gear 11, the first annular gear 11 is fixed with the first connecting cylinder 7, the left side of the inner cavity of the second connecting cylinder 8 is provided with a second annular gear 12, and the second annular gear 12 is fixed with the second connecting cylinder 8;
a sealing plate 32 is arranged at the opening of the right end of the second connecting cylinder 8, an operating rod 13 is arranged in the second connecting cylinder 8, the right end of the operating rod 13 penetrates through the sealing plate 32 and then extends to the right side of the sealing plate 32, namely, the center position of the sealing plate 32 is provided with a perforation, the size of the perforation is matched with the diameter of the operating rod 13, sliding contact is carried out between the operating rod 13 and the perforated side wall, the left end of the operating rod 13 extends to the right end of the inner cavity of the first connecting cylinder 7, the left end of the operating rod 13 is sleeved with a first gear 14 matched with the first annular gear 11, the position of the operating rod 13, which is far to the left, is sleeved with a second gear 15 matched with the second annular gear 12, in the middle part of the operating rod 13, in the initial state, the second gear 15 is positioned in the second annular gear 12 and separated from the first annular gear 11, namely, the first gear 14 is positioned on the left side of the first annular gear 11, a positioning structure is arranged at the right end face of the inner cavity of the second connecting cylinder 8, the positioning structure is used for accurately positioning the first gear 14 and the first annular gear 11 or the second gear 14 is meshed with the first annular gear 11, and the first annular gear 14 is meshed with the right end face of the second annular gear 11 when the first annular gear 14 is meshed with the second annular gear 11, and the first annular gear 14 is meshed with the right end face of the first annular gear 11, and the first gear 14 is meshed with the right end face of the first gear 11, and the right-stage, when the first gear 14 is meshed with the first gear 11 and the first gear 14 is separated with the right gear and the right gear 12;
the right end of the first connecting cylinder 7 is sleeved with a third gear 16, the middle part of the upper end surface of the second vertical plate 3012 is provided with a first sector plate 17 through a rotating shaft, the lower surface of the first sector plate 17 is provided with tooth grooves matched with the third gear 16, and the second gear 15 is meshed with the tooth grooves on the lower surface of the second vertical plate 3012;
the left end of the first connecting cylinder 7 is provided with a fourth vertical plate 18, the fourth vertical plate 18 and the first transverse plate 101 are perpendicular to each other, a gap exists between the fourth vertical plate 18 and the first transverse plate 101, the upper end face of the fourth vertical plate 18 is provided with a second sector plate 19, the right end face of the second sector plate 19 coincides with the right surface of the fourth vertical plate 18, and the second sector plate 19 is connected with the upper end of the first vertical plate 102 through a locking structure;
the front end of the right end face of the second sector plate 19 is provided with a first arc-shaped rack 20, the radian of the first arc-shaped rack 20 is the same, a rotating shaft is arranged on the side wall of the first connecting cylinder 7, the upper end of the rotating shaft is provided with a fourth gear 21 through a bearing sleeve and is positioned between the first arc-shaped rack 20 and the first sector plate 17, the arc-shaped end face of the first sector plate 17 is provided with a second arc-shaped rack 22, the fourth gear 21 is meshed with the first arc-shaped rack 20 and the second arc-shaped rack 22 respectively, when the relative distance between two bone blocks is required to be adjusted, the operating rod 13 is rotated only in an initial state, namely in a state that the second gear 15 is meshed with the second annular gear 12, the operating rod 13 drives the second gear 15 to rotate, the second gear 15 is fixed with the second connecting cylinder 8 and is in an integrated structure, and then drives the second connecting cylinder 8 to rotate, due to the fact that the second connecting cylinder 8 is in threaded connection with the third plate 3022, the third vertical plate 3022 can move rightwards along the length direction of the third connecting cylinder, and further, the third vertical plate 3021 can only slide along with the sliding chute 4 can not slide along with the first horizontal chute 4, and the second horizontal chute 3024 can not slide along with the second horizontal chute 4. In practical application, generally, the X-ray film is photographed for one week after the operation, the stretching direction is determined, the operating rod 13 is rotated every day to realize the distance adjustment between two bone blocks, and because the operating rod 13 drives the second connecting cylinder 8 in a gear and annular gear mode, the second connecting cylinder 8 and the third vertical plate 3022 are in a threaded connection mode, and the distance that the second vertical plate 3012 moves when the operating rod 13 rotates for one circle can be accurately controlled. Preferably, the parameters of the gears and the threads are set so that the operating rod 13 rotates just one circle to lead the stretching distance between two bone blocks to be 1mm. When the relative angle between two bone pieces needs to be adjusted, only the operating rod 13 needs to be pulled rightwards for a certain distance, the distance is limited by the positioning structure, at the moment, the first gear 14 is meshed with the first annular gear 11, the operating rod 13 is rotated anticlockwise, the operating rod 13 drives the first gear 14 to rotate anticlockwise, the first connecting cylinder 7 is driven to rotate, the third gear 16 is driven to rotate anticlockwise, the third gear 16 drives the first sector plate 17 to rotate anticlockwise, the first sector plate 17 is driven to rotate the fourth gear 21 clockwise, the third gear 16 drives the second sector plate 19 to rotate anticlockwise through the first arc-shaped rack 20, the second sector plate 19 is driven to rotate the fourth riser 18 anticlockwise, the first connecting cylinder 7 is driven to rotate, and the third transverse plate 3021 is driven to rotate anticlockwise due to the fact that the first connecting cylinder 7 and the second connecting cylinder 8 are fixed into a whole through the second riser 3012, and therefore steering adjustment of the bone pieces fixed with the third transverse plate 3021 is achieved. Further, the second sector plate 19 is connected with the upper end of the first vertical plate 102 through a locking structure, so that the steering angle is always kept at the position after being adjusted, and rebound cannot occur. After the steering adjustment is finished, the operating rod 13 is loosened, and the operating rod 13 can be restored to the initial state through the positioning structure, so that the distance adjustment every day is facilitated. The adjustment of the spacing between the two bone pieces requires one revolution of the lever 13 per day. Seven to ten days later, shooting again, observing the stretching effect, and if the bone blocks fixed on the third transverse plate 3021 need to be rotated 10 degrees anticlockwise to obtain a more matched osteogenic shape, changing the relative angle between the two bone blocks through the operation mode can adjust the subsequent stretching direction. Since the operating rod 13 drives the first connecting cylinder 7 in a gear and annular gear mode, the first connecting cylinder 7 is connected with the first sector plate 17 and the first sector plate 17 is connected with the second sector plate 19 in a gear transmission mode, and the angle of rotation of the fourth vertical plate 18 when the operating rod 13 rotates for one circle can be accurately controlled. Preferably, the parameters of the gear and the gear ring are set so that the operating rod 13 rotates for one circle to lead the stretching steering angle to be 10 degrees. The angle of the film-shooting stretch-drawing device is adjusted, the bone blocks are continuously stretched by 1mm each day until the required length is reached, and the stretch-drawing device is taken out after the stabilization period.
As shown in fig. 7 and 8, in this example, preferably, the positioning structure includes a first fixed ring 23, a second fixed ring 24, and a first compression spring 25;
the first fixed ring 23 is arranged at the right end of the inner cavity of the second connecting cylinder 8, the outer diameter of the first fixed ring 23 is the same as the inner diameter of the second connecting cylinder 8, and the inner diameter of the first fixed ring 23 is larger than the outer diameter of the first compression spring 25, so that the first compression spring 25 is ensured not to interfere with the first fixed ring 23 when compressing or recovering elastic deformation;
the second fixed ring 24 is sleeved on the operating rod 13 and is positioned at the left side of the first fixed ring 23, and the outer diameter of the second fixed ring 24 is equal to the inner diameter of the second connecting cylinder 8 and the second fixed ring are in sliding contact;
the first compression spring 25 is sleeved on the operation rod 13, that is, the operation rod 13 is positioned in the first compression spring 25 with a gap between the two, the left end of the first compression spring 25 is arranged on the second fixed circular ring 24, the right end of the first compression spring 25 is arranged on the sealing plate 32, the compression distance of the first compression spring 25 is larger than the distance between the second fixed circular ring 24 and the first fixed circular ring 23, and the situation that the compression distance of the first compression spring 25 is not enough to enable the second fixed circular ring 24 to be in contact with the first fixed circular ring 23 is avoided; in the initial state, the first compression spring 25 is in a natural extension state, and when the second fixed ring 24 contacts with the first fixed ring 23, the first gear 14 is meshed with the first ring gear 11 and the second gear 15 is separated from the second ring gear 12. When the relative angle between two bone pieces needs to be adjusted, the operating rod 13 is pulled rightwards until the operating rod is pulled still, the first gear 14 is completely meshed with the first annular gear 11 at the moment, the operating rod 13 is loosened after steering adjustment is finished, the first compression spring 25 can restore the original length under elastic deformation, and the operating rod 13 is driven to move leftwards to restore to the initial state position.
As shown in fig. 2 and 3, in this example, preferably, the locking structure includes a rectangular blind hole 33 disposed on an upper end surface of the first riser 102, a plurality of second compression springs 26 are vertically disposed at a bottom of the rectangular blind hole 33, lifting plates 27 are disposed at upper ends of the plurality of second compression springs 26, a clamping plate 28 is disposed on an upper end surface of the lifting plates 27, and a longitudinal section of the clamping plate 28 is a right triangle;
the lower surface of the second sector plate 19 is provided with a plurality of clamping grooves 29 matched with the clamping plates 28, the plurality of clamping grooves 29 are arranged on the lower surface of the second sector plate 19 in a circumferential array mode, and the angle between any two adjacent clamping grooves 29 is the same as the rotation angle of the fourth riser 18 when the operating rod 13 rotates for one circle. In the initial state, the plurality of second compression springs 26 are in a compressed state and the clamping plate 28 is positioned in one clamping groove 29 of the plurality of clamping grooves 29. Preferably, the angle between any two adjacent detents 29 is 10 degrees, and one rotation of lever 13 just turns the retractor to an angle of 10 degrees just sliding catch plate 28 from one detent 29 into the adjacent other detent 29. The clamping plate 28 and the clamping groove 29 adopt a wedge-shaped structural design, so that rebound and return cannot occur after steering adjustment is completed.
As shown in fig. 10, in this example, in order to avoid the situation that the gear and rack structure accidentally injures the soft tissue of the human body during rotation, a protection plate 30 is disposed above the third gear 16, and a gap exists between the protection plate and the third gear. The left end of guard plate 30 passes through the bracing piece setting on the lateral wall of first connecting cylinder 7, the right-hand member of guard plate 30 passes through the bolt structure setting in the upper end of second riser 3012, can separate stretch ware surface soft tissue and gear, rack structure through guard plate 30, and then avoids gear, rack structure to appear the condition of accidental injury when rotating.
As shown in fig. 10, in this example, in order to avoid the situation that the soft tissue of the human body is accidentally injured when the screw structure between the second connecting tube 8 and the third vertical plate 3022 rotates, the outer side of the third vertical plate 3022 is provided with a U-shaped protecting housing 31, the length of the U-shaped protecting housing 31 is equal to the distance between the second vertical plate 3012 and the sealing plate 32, and the screw structure between the soft tissue and the second connecting tube 8 and the third vertical plate 3022 can be separated by the U-shaped protecting housing 31, so as to avoid the situation that the screw structure between the second connecting tube 8 and the third vertical plate 3022 is accidentally injured when rotating.
As shown in fig. 11, in this example, in order to facilitate the operation and observe the number of turns of the operation lever 13, a positioning line 5 is disposed on the side wall of the operation lever 13, a plurality of scale lines 34 are disposed on the right side surface of the sealing plate 32, similar to the scale lines of the protractor, the accurate rotation can be realized by positioning the mark line 5 and the plurality of scale lines 34, that is, the initial scale where the mark line 5 is located in the initial state, and rotating the operation lever 13 again coincides with the initial scale, so that the operation lever 13 rotates completely for one turn, thereby effectively improving the precision.
The foregoing description is only of the preferred embodiments of the present application, and is not intended to limit the scope of the claims, and all equivalent structures or equivalent processes using the descriptions and drawings of the present application, or direct or indirect application in other related technical fields are included in the scope of the claims of the present application.
Claims (7)
1. A steerable jawbone distractor, characterized in that: comprises a first stretching plate (1) and a second stretching plate (3);
the first stretching plate (1) and the second stretching plate (3) are connected through an adjusting device, and the adjusting device is used for adjusting the distance between the first stretching plate (1) and the second stretching plate (3) or the relative steering between the first stretching plate and the second stretching plate.
2. A steerable jaw distractor as claimed in claim 1, wherein: the first stretching plate (1) comprises a first transverse plate (101) and a first vertical plate (102), wherein the lower end of the first vertical plate (102) is arranged at the left end of the first transverse plate (101) and is perpendicular to the left end of the first transverse plate, and a plurality of first mounting holes (2) are formed in the upper surface of the first transverse plate (101) and are uniformly distributed along the length direction of the first mounting holes;
the second stretching plate (3) comprises a fixed plate (301) and a movable plate (302), the fixed plate (301) comprises a second transverse plate (3011) and a second vertical plate (3012), the lower end of the second vertical plate (3012) is arranged at the left end of the second transverse plate (3011) and is perpendicular to the left end of the second transverse plate, a rectangular chute (4) penetrating through the surface of the second transverse plate (3011) vertically is arranged, and the right side wall of the rectangular chute (4) coincides with the right end face of the second transverse plate (3011); the movable plate (302) comprises a third transverse plate (3021) and a third vertical plate (3022), the front-back width of the third transverse plate (3021) and the front-back width of the third vertical plate (3022) are matched with the front-back width of the rectangular sliding groove (4), the lower end of the third vertical plate (3022) is arranged at the left end of the third transverse plate (3021) and perpendicular to the left end of the third transverse plate, the third transverse plate (3021) is located in the rectangular sliding groove (4), and a plurality of second mounting holes (6) are formed in the upper surface of the third transverse plate (3021) and are uniformly distributed along the length direction of the second mounting holes.
3. A steerable jaw distractor as claimed in claim 2, wherein: the adjusting device comprises a first connecting cylinder (7) and a second connecting cylinder (8);
the second vertical plate (3012) is provided with a first round hole (9), and the right end of the first connecting cylinder (7) and the left end of the second connecting cylinder (8) are respectively arranged in the first round hole (9) through bearings, and a gap exists between the first round hole and the second round hole;
a threaded hole (10) is formed in the third vertical plate (3022), external threads matched with the threaded hole (10) are formed in the outer side wall of the second connecting cylinder (8), and the third vertical plate (3022) is sleeved on the second connecting cylinder (8) through the threaded hole (10) and is in threaded connection with the second connecting cylinder;
a first annular gear (11) is arranged at the right end of the inner cavity of the first connecting cylinder (7), and a second annular gear (12) is arranged at the left side of the inner cavity of the second connecting cylinder (8);
the right end opening of the second connecting cylinder (8) is provided with a sealing plate (32), the second connecting cylinder (8) is internally provided with an operating rod (13), the right end of the operating rod (13) penetrates through the sealing plate (32) and then extends to the right side of the sealing plate (32), the left end of the operating rod (13) extends to the right end of the inner cavity of the first connecting cylinder (7), the left end of the operating rod (13) is sleeved with a first gear (14) matched with the first annular gear (11), the middle part of the operating rod (13) is sleeved with a second gear (15) matched with the second annular gear (12), in an initial state, the second gear (15) is positioned in the second annular gear (12) and the first gear (14) is separated from the first annular gear (11), and the right end of the inner cavity of the second connecting cylinder (8) is provided with a positioning structure used for meshing the first gear (14) with the first annular gear (11) or meshing the second gear (15) with the second annular gear (12);
the right end of the first connecting cylinder (7) is sleeved with a third gear (16), a first sector plate (17) is arranged in the middle of the upper end face of the second vertical plate (3012) through a rotating shaft, tooth grooves matched with the third gear (16) are formed in the lower surface of the first sector plate (17), and the second gear (15) is meshed with the tooth grooves in the lower surface of the second vertical plate (3012);
the left end of the first connecting cylinder (7) is provided with a fourth vertical plate (18) which are mutually perpendicular, a gap exists between the fourth vertical plate (18) and the first transverse plate (101), the upper end face of the fourth vertical plate (18) is provided with a second sector plate (19), the right end face of the second sector plate (19) coincides with the right side surface of the fourth vertical plate (18), and the second sector plate (19) is connected with the upper end of the first vertical plate (102) through a locking structure;
the front end of the right end face of the second sector plate (19) is provided with a first arc-shaped rack (20) and the radian of the first arc-shaped rack is the same, the side wall of the first connecting cylinder (7) is provided with a rotating shaft, the upper end of the rotating shaft is provided with a fourth gear (21) through a bearing sleeve and is positioned between the first arc-shaped rack (20) and the first sector plate (17), the arc-shaped end face of the first sector plate (17) is provided with a second arc-shaped rack (22), and the fourth gear (21) is meshed with the first arc-shaped rack (20) and the second arc-shaped rack (22) respectively.
4. A steerable jaw distractor according to claim 3, wherein: the positioning structure comprises a first fixed circular ring (23), a second fixed circular ring (24) and a first compression spring (25);
the first fixed ring (23) is arranged at the right end of the inner cavity of the second connecting cylinder (8), the outer diameter of the first fixed ring (23) is the same as the inner diameter of the second connecting cylinder (8), and the inner diameter of the first fixed ring (23) is larger than the outer diameter of the first compression spring (25);
the second fixed ring (24) is sleeved on the operating rod (13) and is positioned at the left side of the first fixed ring (23), and the outer diameter of the second fixed ring (24) is equal to the inner diameter of the second connecting cylinder (8) and is in sliding contact with the second fixed ring;
the first compression spring (25) is sleeved on the operating rod (13), the left end of the first compression spring (25) is arranged on the second fixed circular ring (24), and the right end of the first compression spring (25) is arranged on the sealing plate (32); in an initial state, the first compression spring (25) is in a natural extension state, and when the second fixed circular ring (24) is in contact with the first fixed circular ring (23), the first gear (14) is meshed with the first annular gear (11) and the second gear (15) is separated from the second annular gear (12).
5. A steerable jaw distractor as recited in claim 4, wherein: the locking structure comprises a rectangular blind hole (33) arranged on the upper end face of a first vertical plate (102), a plurality of second compression springs (26) are vertically arranged at the bottom of the rectangular blind hole (33), lifting plates (27) are arranged at the upper ends of the second compression springs (26), clamping plates (28) are arranged on the upper end face of the lifting plates (27), and the longitudinal sections of the clamping plates (28) are right-angled triangles;
the lower surface of second sector plate (19) is provided with a plurality of draw-in grooves (29) with cardboard (28) looks adaptation, and a plurality of draw-in grooves (29) are arranged in the lower surface of second sector plate (19) with the mode of circumference array, and in the initial state, a plurality of second compression springs (26) are in compression state and cardboard (28) are located in one draw-in groove (29) in a plurality of draw-in grooves (29).
6. A steerable jaw distractor according to claim 5, wherein: the top of third gear (16) is provided with guard plate (30) and has the clearance between the two, the left end of guard plate (30) passes through the bracing piece setting on the lateral wall of first connecting cylinder (7), the right-hand member of guard plate (30) passes through the upper end of bolt structure setting at second riser (3012).
7. A steerable jaw distractor as recited in claim 6, wherein: the outside of third riser (3022) is provided with U-shaped protective housing (31), the length of U-shaped protective housing (31) equals the distance between second riser (3012) and closing plate (32).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202311484596.2A CN117281598A (en) | 2023-11-07 | 2023-11-07 | Jaw stretching device capable of changing direction |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202311484596.2A CN117281598A (en) | 2023-11-07 | 2023-11-07 | Jaw stretching device capable of changing direction |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN117281598A true CN117281598A (en) | 2023-12-26 |
Family
ID=89248181
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202311484596.2A Pending CN117281598A (en) | 2023-11-07 | 2023-11-07 | Jaw stretching device capable of changing direction |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN117281598A (en) |
-
2023
- 2023-11-07 CN CN202311484596.2A patent/CN117281598A/en active Pending
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