CN111714196B - Auxiliary fixing plate, fixing plate assembly and clamping and positioning device - Google Patents
Auxiliary fixing plate, fixing plate assembly and clamping and positioning device Download PDFInfo
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- CN111714196B CN111714196B CN202010664219.7A CN202010664219A CN111714196B CN 111714196 B CN111714196 B CN 111714196B CN 202010664219 A CN202010664219 A CN 202010664219A CN 111714196 B CN111714196 B CN 111714196B
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- fixing plate
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- 230000002093 peripheral effect Effects 0.000 claims description 13
- 229910001069 Ti alloy Inorganic materials 0.000 claims description 6
- 239000000956 alloy Substances 0.000 claims description 4
- 230000002265 prevention Effects 0.000 abstract description 3
- 210000000988 bone and bone Anatomy 0.000 description 5
- 238000012986 modification Methods 0.000 description 4
- 230000004048 modification Effects 0.000 description 4
- RTAQQCXQSZGOHL-UHFFFAOYSA-N Titanium Chemical compound [Ti] RTAQQCXQSZGOHL-UHFFFAOYSA-N 0.000 description 2
- 210000001367 artery Anatomy 0.000 description 2
- 229910052719 titanium Inorganic materials 0.000 description 2
- 239000010936 titanium Substances 0.000 description 2
- 210000003462 vein Anatomy 0.000 description 2
- 229910000883 Ti6Al4V Inorganic materials 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 230000004927 fusion Effects 0.000 description 1
- 238000002513 implantation Methods 0.000 description 1
- 238000003780 insertion Methods 0.000 description 1
- 230000037431 insertion Effects 0.000 description 1
- 238000009434 installation Methods 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- 239000000203 mixture Substances 0.000 description 1
- 210000001519 tissue Anatomy 0.000 description 1
Classifications
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- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61B—DIAGNOSIS; SURGERY; IDENTIFICATION
- A61B17/00—Surgical instruments, devices or methods, e.g. tourniquets
- A61B17/56—Surgical instruments or methods for treatment of bones or joints; Devices specially adapted therefor
- A61B17/58—Surgical instruments or methods for treatment of bones or joints; Devices specially adapted therefor for osteosynthesis, e.g. bone plates, screws, setting implements or the like
- A61B17/68—Internal fixation devices, including fasteners and spinal fixators, even if a part thereof projects from the skin
- A61B17/70—Spinal positioners or stabilisers ; Bone stabilisers comprising fluid filler in an implant
- A61B17/7059—Cortical plates
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- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61B—DIAGNOSIS; SURGERY; IDENTIFICATION
- A61B17/00—Surgical instruments, devices or methods, e.g. tourniquets
- A61B17/56—Surgical instruments or methods for treatment of bones or joints; Devices specially adapted therefor
- A61B17/58—Surgical instruments or methods for treatment of bones or joints; Devices specially adapted therefor for osteosynthesis, e.g. bone plates, screws, setting implements or the like
- A61B17/68—Internal fixation devices, including fasteners and spinal fixators, even if a part thereof projects from the skin
- A61B17/70—Spinal positioners or stabilisers ; Bone stabilisers comprising fluid filler in an implant
- A61B17/7074—Tools specially adapted for spinal fixation operations other than for bone removal or filler handling
- A61B17/7083—Tools for guidance or insertion of tethers, rod-to-anchor connectors, rod-to-rod connectors, or longitudinal elements
-
- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61B—DIAGNOSIS; SURGERY; IDENTIFICATION
- A61B17/00—Surgical instruments, devices or methods, e.g. tourniquets
- A61B17/56—Surgical instruments or methods for treatment of bones or joints; Devices specially adapted therefor
- A61B17/58—Surgical instruments or methods for treatment of bones or joints; Devices specially adapted therefor for osteosynthesis, e.g. bone plates, screws, setting implements or the like
- A61B17/68—Internal fixation devices, including fasteners and spinal fixators, even if a part thereof projects from the skin
- A61B17/70—Spinal positioners or stabilisers ; Bone stabilisers comprising fluid filler in an implant
- A61B2017/7073—Spinal positioners or stabilisers ; Bone stabilisers comprising fluid filler in an implant with intervertebral connecting element crossing an imaginary spinal median surface
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- Health & Medical Sciences (AREA)
- Orthopedic Medicine & Surgery (AREA)
- Neurology (AREA)
- Life Sciences & Earth Sciences (AREA)
- Surgery (AREA)
- Heart & Thoracic Surgery (AREA)
- Engineering & Computer Science (AREA)
- Biomedical Technology (AREA)
- Nuclear Medicine, Radiotherapy & Molecular Imaging (AREA)
- Medical Informatics (AREA)
- Molecular Biology (AREA)
- Animal Behavior & Ethology (AREA)
- General Health & Medical Sciences (AREA)
- Public Health (AREA)
- Veterinary Medicine (AREA)
- Surgical Instruments (AREA)
Abstract
The invention provides an auxiliary fixing plate, a fixing plate assembly and a clamping and positioning device, wherein the auxiliary fixing plate comprises: the plate body is provided with an upper mounting hole, a first clamping and positioning hole and two lower mounting holes on a first mounting surface; the hole wall of each upper mounting hole is provided with an upper protruding baffle plate, and the hole wall of each lower mounting hole is provided with a lower protruding baffle plate; the first bearing surface of the plate body is provided with a first upper positioning convex strip and a first lower positioning convex strip which are arranged in parallel. The auxiliary fixing plate provided by the invention has the nail-withdrawing prevention function, is simple and compact in structure, is convenient to operate and install, and is low in cost.
Description
Technical Field
The invention relates to the technical field of medical equipment, in particular to an auxiliary fixing plate, a fixing plate assembly and a clamping and positioning device.
Background
At present, the titanium plate needs to be fixed in an auxiliary way in the spinal fusion operation of partial lumbar anterior approach, but the titanium plate in the existing market often has the problems of easy nail withdrawal, overlarge volume, complex operation and the like.
Disclosure of Invention
In view of the above-mentioned drawbacks of the prior art, the present invention solves the technical problem of providing an auxiliary fixing plate, a fixing plate assembly and a clamping and positioning device.
To achieve the above and other related objects, the present invention provides an auxiliary fixing plate comprising: the plate body is provided with a first bearing surface and a first mounting surface on two opposite side surfaces, an upper mounting hole, a first clamping and positioning hole and two lower mounting holes are formed in the first mounting surface, the upper mounting hole, the first clamping and positioning hole and the two lower mounting holes penetrate through the first bearing surface, the first clamping and positioning hole is located under the upper mounting hole, and the two lower mounting holes are located under the first clamping and positioning hole; the central axis of the upper mounting hole and the plane where the central axis of the first clamping and positioning hole is located are middle planes, and the two lower mounting holes are symmetrically arranged by taking the middle planes as central axes;
The hole wall of each upper mounting hole is provided with an upper protruding baffle plate, and the hole wall of each lower mounting hole is provided with a lower protruding baffle plate;
the first bearing surface of the plate body is provided with a first upper positioning convex strip and a first lower positioning convex strip which are arranged in parallel, and the first upper positioning convex strip is positioned above the first lower positioning convex strip; the first upper positioning convex strips are positioned on the lower edges of the upper mounting holes, and the first lower positioning convex strips are positioned on the upper edges of the two lower mounting holes.
Preferably, the peripheral outline of the panel body includes two side edge parts with equal length and a bottom edge part below the two side edge parts, the upper ends of the two side edge parts are connected, the lower ends of the two side edge parts are respectively connected with two ends of the bottom edge part, and the peripheral outline of the panel body forms an isosceles triangle structure; the upper mounting holes are positioned on the top corners of the plate body, and the two lower mounting holes are positioned on the two bottom corners of the plate body.
Further, a groove is formed in the first mounting surface of the plate body, and one side groove wall of the groove penetrates through the bottom edge part; the first clamping and positioning hole is positioned on the bottom surface of the groove.
Further, each of the side edge portions is an inwardly recessed structure, and the bottom edge portion is an inwardly recessed structure.
Further, the connection of the upper ends of the two side edge parts is provided with a round corner structure, and the connection of the lower end of each side edge part and the bottom edge part is provided with a round corner structure.
Preferably, the first receiving surface of the panel body is a structure recessed toward a direction approaching the first mounting surface of the panel body, and the first mounting surface of the panel body is a structure protruding toward a direction away from the first receiving surface of the panel body.
Preferably, the first clamping and positioning hole is a threaded hole.
Preferably, the auxiliary fixing plate is made of titanium alloy material.
The invention also relates to a fixing plate assembly, which comprises a plurality of auxiliary fixing plates and a plurality of test templates, wherein the sizes of upper mounting holes on the auxiliary fixing plates are the same, the sizes of lower mounting holes on the auxiliary fixing plates are the same, and the sizes of first clamping and positioning holes on the auxiliary fixing plates are the same; the distances between the upper mounting holes and the first clamping and positioning holes on the auxiliary fixing plates are different, and the distances between the lower mounting holes and the first clamping and positioning holes on the auxiliary fixing plates are the same;
the auxiliary fixing plates are in one-to-one correspondence with the test templates, and the peripheral outline of the test template is the same as the corresponding peripheral outline of the auxiliary fixing plates in size; the two opposite side surfaces of the test template are a second bearing surface and a second mounting surface respectively, an upper observation hole, a second clamping and positioning hole and a lower observation hole are formed in the second mounting surface, the upper observation hole, the second clamping and positioning hole and the lower observation hole penetrate through the second bearing surface, the second clamping and positioning hole is located right below the upper observation hole, and the lower observation hole is located below the second clamping and positioning hole; the upper observation hole is a strip hole extending along the vertical direction, and the lower observation hole is a strip hole extending along the horizontal direction;
The distance between the upper edge of the hole wall of the upper observation hole of the test template and the central axis of the second clamping and positioning hole is equal to the distance between the upper edge of the hole wall of the upper mounting hole of the corresponding auxiliary fixing plate and the central axis of the first clamping and positioning hole; the distance between edges of the hole walls of the lower observation holes of the test template in the horizontal direction is equal to the maximum distance of the hole walls of the two lower mounting holes of the corresponding auxiliary fixing plate in the horizontal direction;
The vertical distance between the central axis of the second clamping and positioning hole of the test template and the bottom of the test template is equal to the vertical distance between the central axis of the first clamping and positioning hole of the corresponding auxiliary fixing plate and the bottom of the plate body of the auxiliary fixing plate;
the structure of the second bearing surface of the test template is the same as that of the first bearing surface of the corresponding auxiliary fixing plate, and the structure of the second mounting surface of the test template is the same as that of the first mounting surface of the corresponding auxiliary fixing plate;
the test template is provided with a second upper positioning convex strip which corresponds to the first upper positioning convex strip of the corresponding auxiliary fixing plate;
the test template is provided with a second lower positioning convex strip, and the second lower positioning convex strip corresponds to the corresponding first lower positioning convex strip of the auxiliary fixing plate.
The invention also relates to a clamping and positioning device which is used for clamping the auxiliary fixing plate and the test template in the fixing plate assembly;
The clamping and positioning device comprises a clamping rod, the lower end of the clamping rod is connected with a pressing plate, the lower end of the pressing plate is connected with a clamping plate, an included angle between the pressing plate and the clamping plate is 90 degrees, a positioning through hole is formed in one end, away from the clamping plate, of the pressing plate, a connecting piece penetrates into the positioning through hole, and the interval between the central axis of the connecting piece and the clamping plate is equal to the vertical distance between the central axis of a first clamping and positioning hole of an auxiliary fixing plate and the bottom of a plate body of the auxiliary fixing plate.
As described above, the auxiliary fixing plate, the fixing plate assembly and the clamping and positioning device of the present invention have the following beneficial effects:
According to the auxiliary fixing plate, the first bearing surface is covered on the lumbar vertebra, the upper mounting holes are connected with the fifth lumbar vertebra body through screws, the two lower mounting holes are connected with the sacrum through screws, and the upper protruding baffle plate and the lower protruding baffle plate are used for preventing the screws installed after operation from withdrawing; the first upper positioning convex strips and the first lower positioning convex strips are used for positioning when being close to the bone surface; the first clamping and positioning holes can facilitate the connection of the auxiliary fixing plate with other devices; the auxiliary fixing plate provided by the invention has the nail-withdrawing prevention function, is simple and compact in structure, is convenient to operate and install, and is low in cost.
Drawings
Fig. 1 is a schematic perspective view showing that the clamping and positioning device of the present embodiment clamps the auxiliary fixing plate, the auxiliary fixing plate is pressed on the lumbar vertebra, and the screw is mounted on the lumbar vertebra by the screw driver.
Fig. 2 shows an enlarged schematic view of the structure at a in fig. 1.
Fig. 3 is a schematic perspective view showing a structure in which the clamping and positioning device of the present embodiment clamps the auxiliary fixing plate and the screws penetrate the upper mounting holes and the lower mounting holes.
Fig. 4 is an enlarged schematic view of the structure at B of fig. 3.
Fig. 5 is a schematic structural view showing a first mounting surface of the auxiliary fixing plate of the present embodiment.
Fig. 6 is a schematic structural view of a first receiving surface of the auxiliary fixing plate according to the present embodiment.
Fig. 7 is a schematic perspective view of the clamping and positioning device according to the present embodiment.
Fig. 8 is a schematic perspective view showing the mounting screw of the upper screwdriver of the present embodiment.
Fig. 9 is a schematic view showing the structure of the second mounting surface of the test template of the present embodiment.
Fig. 10 is a schematic structural view of a second receiving surface of the test template according to the present embodiment.
Fig. 11 is a schematic structural view of an open cone of the present embodiment.
Description of the reference numerals
10. Fifth lumbar vertebra
20. Sacrum bone
100. Plate body
101. First bearing surface
102. First mounting surface
103. Side edge portion
104. Bottom edge portion
110. Upper mounting hole
111. Upper protruding baffle
120. First clamping and positioning hole
130. Lower mounting hole
131. Lower protruding baffle
140. First upper positioning convex strip
150. First lower positioning convex strip
160. Groove
170. Round corner structure
200. Test template
201. Second bearing surface
202. Second mounting surface
210. Upper observation hole
220. Second clamping and positioning hole
230. Lower observation hole
240. Second upper positioning convex strip
250. Second lower positioning convex strip
310. Clamping rod
320. Pressing plate
321. Positioning through hole
330. Clamping plate
340. Connecting piece
400. Screw bolt
500. Open-circuit cone
600. Nail feeding screwdriver
Detailed Description
Further advantages and effects of the present invention will become apparent to those skilled in the art from the disclosure of the present invention, which is described by the following specific examples.
Please refer to the accompanying drawings. It should be understood that the structures, proportions, sizes, etc. shown in the drawings are for illustration purposes only and should not be construed as limiting the invention to the extent that it can be practiced, since modifications, changes in the proportions, or otherwise, used in the practice of the invention, are not intended to be critical to the essential characteristics of the invention, but are intended to fall within the spirit and scope of the invention. Also, the terms such as "upper," "lower," "left," "right," "middle," and "a" and the like recited in the present specification are merely for descriptive purposes and are not intended to limit the scope of the invention, but are intended to provide relative positional changes or modifications without materially altering the technical context in which the invention may be practiced.
As shown in fig. 1 to 11, the auxiliary fixing plate of the present embodiment includes: the plate body 100, two opposite sides of the plate body 100 are a first bearing surface 101 and a first mounting surface 102 respectively, an upper mounting hole 110, a first clamping and positioning hole 120 and two lower mounting holes 130 are arranged on the first mounting surface 102, the upper mounting hole 110, the first clamping and positioning hole 120 and the two lower mounting holes 130 penetrate through the first bearing surface 101, the first clamping and positioning hole 120 is positioned under the upper mounting hole 110, and the two lower mounting holes 130 are positioned under the first clamping and positioning hole 120; the central axis of the upper mounting hole 110 and the plane of the central axis of the first clamping and positioning hole 120 are middle planes, and the two lower mounting holes 130 are symmetrically arranged by taking the middle planes as central axes;
the hole wall of the upper mounting hole 110 is provided with an upper protruding baffle 111, and the hole wall of each lower mounting hole 130 is provided with a lower protruding baffle 131;
The first receiving surface 101 of the panel body 100 is provided with a first upper positioning convex strip 140 and a first lower positioning convex strip 150 which are arranged in parallel, and the first upper positioning convex strip 140 is positioned above the first lower positioning convex strip 150; the first upper positioning rib 140 is located on the lower edge of the upper mounting hole 110, and the first lower positioning rib 150 is located on the upper edges of the two lower mounting holes 130.
In the auxiliary fixing plate, the first bearing surface 101 is covered on the lumbar vertebra, the upper mounting hole 110 is connected with the fifth lumbar vertebra body 10 through the screw 400, the two lower mounting holes 130 are connected with the sacrum 20 through the screw 400, and the upper protruding baffle 111 and the lower protruding baffle 131 are used for preventing the screw 400 arranged after operation from being withdrawn; the first upper positioning convex strip 140 and the first lower positioning convex strip 150 are used for positioning when being close to the bone surface; the first clamping and positioning hole 120 can facilitate connection of the auxiliary fixing plate with other devices; the auxiliary fixing plate provided by the invention has the nail-withdrawing prevention function, is simple and compact in structure, is convenient to operate and install, and is low in cost.
The peripheral outline of the panel body 100 includes two side edge portions 103 of equal length and a bottom edge portion 104 below the two side edge portions 103, the upper ends of the two side edge portions 103 are connected, the lower ends of the two side edge portions 103 are respectively connected with the two ends of the bottom edge portion 104, and the peripheral outline of the panel body 100 forms an isosceles triangle structure; the upper mounting holes 110 are located at the top corners of the panel body 100 and the two lower mounting holes 130 are located at the two bottom corners of the panel body 100. Since the artery and vein at the upper part of the position where the auxiliary fixing plate is installed on the lumbar vertebra just branches into a triangular space, the peripheral outline of the plate body 100 forms an isosceles triangle structure which can be positioned below the artery and vein branching, and in addition, the isosceles triangle structure is a stable supporting structure. The upper mounting holes 110 of the plate body 100 are positioned at the top corners and the two lower mounting holes 130 are positioned at the two bottom corners, so that the auxiliary fixing plate can be stably mounted on the lumbar vertebrae.
Each side edge portion 103 is an inwardly recessed structure, and the bottom edge portion 104 is an inwardly recessed structure. This makes the structure of the auxiliary fixing plate more compact.
The junction of the upper ends of the two side edge portions 103 has a rounded corner structure 170, and the junction of the lower end of each side edge portion 103 and the bottom edge portion 104 has a rounded corner structure 170. The rounded corner structure 170 is provided to avoid damaging human tissue.
The first receiving surface 101 of the panel body 100 is recessed in a direction toward the first mounting surface 102 of the panel body 100, and the first mounting surface 102 of the panel body 100 is protruding in a direction away from the first receiving surface 101 of the panel body 100. This structure makes supplementary fixed plate can laminate on the lumbar vertebrae with good and have better structural strength.
The auxiliary fixing plate is made of titanium alloy materials. The titanium alloy material is titanium alloy TC4 material, and the composition of the titanium alloy TC4 is Ti-6Al-4V.
The fixing plate assembly of the present embodiment includes a plurality of auxiliary fixing plates and a plurality of test templates 200, the upper mounting holes 110 on each auxiliary fixing plate have the same size, the lower mounting holes 130 on each auxiliary fixing plate have the same size, and the first clamping and positioning holes 120 on each auxiliary fixing plate have the same size; the distances between the upper mounting holes 110 and the first clamping and positioning holes 120 on each auxiliary fixing plate are different, and the distances between the lower mounting holes 130 and the first clamping and positioning holes 120 on each auxiliary fixing plate are the same; the screws 400 of the respective different auxiliary fixing plates installed in the same kind of holes are identical, but since the distances between the upper installation holes 110 and the first clamping and positioning holes 120 on the respective auxiliary fixing plates are different, the vertical lengths of the respective different auxiliary fixing plates are different, that is, the respective different auxiliary fixing plates are of different specifications;
The auxiliary fixing plates are in one-to-one correspondence with the test templates 200, and the peripheral outline of the test templates 200 is the same as the peripheral outline of the corresponding auxiliary fixing plate in size; the two opposite side surfaces of the test template 200 are a second bearing surface 201 and a second mounting surface 202 respectively, an upper observation hole 210, a second clamping and positioning hole 220 and a lower observation hole 230 are arranged on the second mounting surface 202, the upper observation hole 210, the second clamping and positioning hole 220 and the lower observation hole 230 penetrate through the second bearing surface 201, the second clamping and positioning hole 220 is positioned under the upper observation hole 210, and the lower observation hole 230 is positioned under the second clamping and positioning hole 220; the upper viewing aperture 210 is a vertically extending elongated aperture, and the lower viewing aperture 230 is a horizontally extending elongated aperture; the specifications of each of the different test templates 200 are also different.
The distance between the upper edge of the hole wall of the upper observation hole 210 of the test template 200 and the central axis of the second clamping and positioning hole 220 is equal to the distance between the upper edge of the hole wall of the upper mounting hole 110 of the corresponding auxiliary fixing plate and the central axis of the first clamping and positioning hole 120; the distance between edges of the hole walls of the lower viewing holes 230 of the trial template 200 in the horizontal direction is equal to the maximum distance of the hole walls of the two lower mounting holes 130 of the corresponding auxiliary fixing plate in the horizontal direction;
The vertical distance between the central axis of the second clamping and positioning hole 220 of the test template 200 and the bottom of the test template 200 is equal to the vertical distance between the central axis of the first clamping and positioning hole 120 of the corresponding auxiliary fixing plate and the bottom of the plate body 100 of the auxiliary fixing plate;
the second bearing surface 201 of the test template 200 has the same structure as the first bearing surface 101 of the corresponding auxiliary fixing plate, and the second mounting surface 202 of the test template 200 has the same structure as the first mounting surface 102 of the corresponding auxiliary fixing plate;
The test template 200 is provided with a second upper positioning convex strip 240, and the second upper positioning convex strip 240 corresponds to the first upper positioning convex strip 140 of the corresponding auxiliary fixing plate;
The test template 200 is provided with a second lower positioning convex strip 250, and the second lower positioning convex strip 250 corresponds to the first lower positioning convex strip 150 of the corresponding auxiliary fixing plate.
When the fixing plate assembly is used, a test template 200 is firstly selected to be placed on the lumbar vertebra, whether the test template 200 is suitable for being placed between the fifth vertebral body 10 and the sacrum 20 of the lumbar vertebra of a patient can be visually checked through the upper observation hole 210 and the lower observation hole 230, and if the test template 200 is suitable, the auxiliary fixing plate corresponding to the test template 200 is placed on the lumbar vertebra; if the trial template 200 is not appropriate, a trial template 200 of another size is replaced and placed between the fifth vertebral body 10 and the sacrum 20 of the patient's lumbar vertebra until an appropriate auxiliary fixation plate is selected.
The clamping and positioning device of the embodiment is used for clamping the auxiliary fixing plate and the test template 200 in the fixing plate assembly;
The clamping and positioning device comprises a clamping rod 310, the lower end of the clamping rod 310 is connected with a pressing plate 320, the lower end of the pressing plate 320 is connected with a clamping plate 330, an included angle between the pressing plate 320 and the clamping plate 330 is 90 degrees, a positioning through hole 321 is formed in one end, away from the clamping plate 330, of the pressing plate 320, a connecting piece 340 penetrates into the positioning through hole 321, and the interval between the central axis of the connecting piece 340 and the clamping plate 330 is equal to the vertical distance between the central axis of a first clamping and positioning hole 120 of the auxiliary fixing plate and the bottom of a plate body 100 of the auxiliary fixing plate.
The connecting piece 340 can be connected with the first clamping and positioning hole 120 or the second clamping and positioning hole 220, and since the interval between the central axis of the connecting piece 340 and the clamping plate 330 is equal to the vertical distance between the central axis of the first clamping and positioning hole 120 of the auxiliary fixing plate and the bottom of the plate body 100 of the auxiliary fixing plate, when the connecting piece 340 is connected with the first clamping and positioning hole 120, the clamping plate 330 props against the bottom of the auxiliary fixing plate, so that the clamping and positioning device clamps the auxiliary fixing plate; when the connecting member 340 is connected with the second clamping and positioning hole 220, the clamping plate 330 abuts against the bottom of the test template 200, so that the clamping and positioning device clamps the test template 200.
The first mounting surface 102 of the panel body 100 is provided with a groove 160, and one side groove wall of the groove 160 penetrates through to the bottom edge 104; the first clamping and positioning hole 120 is located on the bottom surface of the groove 160. This structure can facilitate insertion of the pressing plate 320 into the groove 160 from the bottom edge portion 104, and the pressing plate 320 can be fitted to the groove bottom surface of the groove 160, so that the clamping-positioning device is a more stable clamping-assisting fixing plate.
The first clamping and positioning holes 120 and the second clamping and positioning holes 220 are threaded holes. The connection member 340 is a nail having external threads, and the connection member 340 can be detachably connected with the first clamping and positioning hole 120 or the second clamping and positioning hole 220.
The clamping and positioning device can stably hold the auxiliary fixing plate and the test template 200, is convenient to install and does not shade the nail path; the operation is simple and convenient, the operation time is shortened, and the operation safety is greatly improved. The appearance of centre gripping locating device lower extreme is small and exquisite, compact structure, can effectively avoid three nail way, makes open-circuit awl 500 and last nail bottle opener 600 all can pass through smoothly, reaches the bone face.
The fixing plate assembly of this embodiment includes the following steps when installed:
1) The clamping and positioning device is used for clamping and taking the specification of the auxiliary fixing plate required by the test template 200 to be attached to the bone surface;
2) The auxiliary fixing plate is held by the clamping and positioning device for implantation, when the auxiliary fixing plate reaches a designated position, the surface skin of the vertebral body is punctured by the open-circuit cone 500 to reserve the nail path direction, and then the screw 400 is installed by the nail driver 600;
3) After the screw 400 is installed, the clamping and positioning device is removed with the screw driver 600, and the subsequent surgical steps are completed.
In this embodiment, the middle of the upper screw driver 600 has a rotatable screw rod, which can stably hold the screw 400 after being mounted with the threads inside the plum blossom groove of the screw 400; the middle of the screw 400 is provided with a screw internal threaded hole matched with the upper screw driver 600, and the screw can be used for holding.
In conclusion, the invention effectively overcomes various defects in the prior art and has high industrial utilization value.
The above embodiments are merely illustrative of the principles of the present invention and its effectiveness, and are not intended to limit the invention. Modifications and variations may be made to the above-described embodiments by those skilled in the art without departing from the spirit and scope of the invention. Accordingly, it is intended that all equivalent modifications and variations of the invention be covered by the claims, which are within the ordinary skill of the art, be within the spirit and scope of the present disclosure.
Claims (6)
1. A fixed plate assembly, characterized in that: comprising a plurality of auxiliary fixation plates and a plurality of trial templates (200), the auxiliary fixation plates comprising: the plate body (100), two opposite sides of the plate body (100) are respectively a first bearing surface (101) and a first mounting surface (102), an upper mounting hole (110), a first clamping and positioning hole (120) and two lower mounting holes (130) are formed in the first mounting surface (102), the upper mounting hole (110), the first clamping and positioning hole (120) and the two lower mounting holes (130) penetrate through the first bearing surface (101), the first clamping and positioning hole (120) is located under the upper mounting hole (110), and the two lower mounting holes (130) are located under the first clamping and positioning hole (120); the central axis of the upper mounting hole (110) and the plane where the central axis of the first clamping and positioning hole (120) is located are middle planes, and the two lower mounting holes (130) are symmetrically arranged by taking the middle planes as central axes; an upper protruding baffle (111) is arranged on the hole wall of the upper mounting hole (110), and a lower protruding baffle (131) is arranged on the hole wall of each lower mounting hole (130); the first bearing surface (101) of the plate body (100) is provided with a first upper positioning convex strip (140) and a first lower positioning convex strip (150) which are arranged in parallel, and the first upper positioning convex strip (140) is positioned above the first lower positioning convex strip (150); the first upper positioning convex strips (140) are positioned on the lower edges of the upper mounting holes (110), and the first lower positioning convex strips (150) are positioned on the upper edges of the two lower mounting holes (130); the peripheral outline of the plate body (100) comprises two side edge parts (103) with equal length and a bottom edge part (104) positioned below the two side edge parts (103), the upper ends of the two side edge parts (103) are connected, the lower ends of the two side edge parts (103) are respectively connected with two ends of the bottom edge part (104), and the peripheral outline of the plate body (100) forms an isosceles triangle structure; the upper mounting holes (110) are positioned on the top corners of the plate body (100), and the two lower mounting holes (130) are positioned on the two bottom corners of the plate body (100); a groove (160) is formed in the first mounting surface (102) of the plate body (100), and one side groove wall of the groove (160) penetrates through to the bottom edge part (104); the first clamping and positioning hole (120) is positioned on the bottom surface of the groove (160); each side edge part (103) is of an inward concave structure, and each bottom edge part (104) is of an inward concave structure;
The sizes of the upper mounting holes (110) on the auxiliary fixing plates are the same, the sizes of the lower mounting holes (130) on the auxiliary fixing plates are the same, and the sizes of the first clamping and positioning holes (120) on the auxiliary fixing plates are the same; the distances between the upper mounting holes (110) and the first clamping and positioning holes (120) on each auxiliary fixing plate are different, and the distances between the lower mounting holes (130) and the first clamping and positioning holes (120) on each auxiliary fixing plate are the same;
The auxiliary fixing plates are in one-to-one correspondence with the test templates (200), and the peripheral outline of the test templates (200) is the same as the peripheral outline of the corresponding auxiliary fixing plate in size; two opposite side surfaces of the test template (200) are a second bearing surface (201) and a second mounting surface (202) respectively, an upper observation hole (210), a second clamping and positioning hole (220) and a lower observation hole (230) are formed in the second mounting surface (202), the upper observation hole (210), the second clamping and positioning hole (220) and the lower observation hole (230) penetrate through the second bearing surface (201), the second clamping and positioning hole (220) is located under the upper observation hole (210), and the lower observation hole (230) is located under the second clamping and positioning hole (220); the upper observation hole (210) is a strip hole extending along the vertical direction, and the lower observation hole is a strip hole extending along the horizontal direction;
The distance between the upper edge of the hole wall of the upper observation hole (210) of the test template (200) and the central axis of the second clamping and positioning hole (220) is equal to the distance between the upper edge of the hole wall of the corresponding upper mounting hole (110) of the auxiliary fixing plate and the central axis of the first clamping and positioning hole (120); the distance between edges of the hole walls of the lower observation holes (230) of the test template (200) in the horizontal direction is equal to the maximum distance of the hole walls of the two lower mounting holes (130) of the corresponding auxiliary fixing plate in the horizontal direction;
The vertical distance between the central axis of the second clamping and positioning hole (220) of the test template (200) and the bottom of the test template (200) is equal to the vertical distance between the central axis of the first clamping and positioning hole (120) of the corresponding auxiliary fixing plate and the bottom of the plate body (100) of the auxiliary fixing plate;
The second bearing surface (201) of the test template (200) has the same structure as the corresponding first bearing surface (101) of the auxiliary fixing plate, and the second mounting surface (202) of the test template (200) has the same structure as the corresponding first mounting surface (102) of the auxiliary fixing plate;
The test template (200) is provided with a second upper positioning convex strip (240), and the second upper positioning convex strip (240) corresponds to the first upper positioning convex strip (140) of the corresponding auxiliary fixing plate;
The test template (200) is provided with a second lower positioning convex strip (250), and the second lower positioning convex strip (250) corresponds to the corresponding first lower positioning convex strip (150) of the auxiliary fixing plate.
2. The fixation plate assembly of claim 1, wherein: the connection of the upper ends of the two side edge parts (103) is provided with a round corner structure (170), and the connection of the lower end of each side edge part (103) and the bottom edge part (104) is provided with a round corner structure (170).
3. The fixation plate assembly of claim 1, wherein: the first receiving surface (101) of the panel body (100) is concave toward the direction close to the first mounting surface (102) of the panel body (100), and the first mounting surface (102) of the panel body (100) is convex toward the direction far from the first receiving surface (101) of the panel body (100).
4. The fixation plate assembly of claim 1, wherein: the first clamping and positioning hole (120) is a threaded hole.
5. The fixation plate assembly of claim 1, wherein: the auxiliary fixing plate is made of titanium alloy materials.
6. The fixation plate assembly of claim 1, wherein: the clamping and positioning device is used for clamping the auxiliary fixing plate and the test template (200) in the fixing plate assembly;
The clamping and positioning device comprises a clamping rod (310), the lower end of the clamping rod (310) is connected with a pressing plate (320), the lower end of the pressing plate (320) is connected with a clamping plate (330), an included angle between the pressing plate (320) and the clamping plate (330) is 90 degrees, the pressing plate (320) is far away from one end of the clamping plate (330) and is provided with a positioning through hole (321), a connecting piece (340) penetrates into the positioning through hole (321), and the interval between the central axis of the connecting piece (340) and the clamping plate (330) is equal to the vertical distance between the central axis of a first clamping and positioning hole (120) of an auxiliary fixing plate and the bottom of a plate body (100) of the auxiliary fixing plate.
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010664219.7A CN111714196B (en) | 2020-07-10 | 2020-07-10 | Auxiliary fixing plate, fixing plate assembly and clamping and positioning device |
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| Application Number | Priority Date | Filing Date | Title |
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| CN202010664219.7A CN111714196B (en) | 2020-07-10 | 2020-07-10 | Auxiliary fixing plate, fixing plate assembly and clamping and positioning device |
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| CN111714196B true CN111714196B (en) | 2024-07-12 |
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| CN113397682B (en) * | 2021-07-28 | 2022-06-24 | 中国人民解放军空军军医大学 | Oblique lateral lumbar interbody fusion lateral reduction fixing system |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN212382723U (en) * | 2020-07-10 | 2021-01-22 | 上海三友医疗器械股份有限公司 | Auxiliary fixing plate, fixing plate assembly and clamping and positioning device |
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| FR2823096B1 (en) * | 2001-04-06 | 2004-03-19 | Materiel Orthopedique En Abreg | PLATE FOR LTE AND LTE VERTEBRATE OSTEOSYNTHESIS DEVICE, OSTEOSYNTHESIS DEVICE INCLUDING SUCH A PLATE, AND INSTRUMENT FOR LAYING SUCH A PLATE |
| US7819903B2 (en) * | 2003-03-31 | 2010-10-26 | Depuy Spine, Inc. | Spinal fixation plate |
| US6945974B2 (en) * | 2003-07-07 | 2005-09-20 | Aesculap Inc. | Spinal stabilization implant and method of application |
| CN208741117U (en) * | 2017-10-20 | 2019-04-16 | 上海三友医疗器械股份有限公司 | For anterior spinal, the internal fixation plate of dypass |
| CN110916857B (en) * | 2019-12-25 | 2022-06-07 | 保定向阳航空精密机械有限公司 | Condyle holding device convenient for prosthesis implantation |
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| CN212382723U (en) * | 2020-07-10 | 2021-01-22 | 上海三友医疗器械股份有限公司 | Auxiliary fixing plate, fixing plate assembly and clamping and positioning device |
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