CN114587556B - Fixed support for tibial osteotomy - Google Patents
Fixed support for tibial osteotomy Download PDFInfo
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- CN114587556B CN114587556B CN202210312259.4A CN202210312259A CN114587556B CN 114587556 B CN114587556 B CN 114587556B CN 202210312259 A CN202210312259 A CN 202210312259A CN 114587556 B CN114587556 B CN 114587556B
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- 229910000831 Steel Inorganic materials 0.000 claims abstract description 38
- 239000010959 steel Substances 0.000 claims abstract description 38
- 230000000149 penetrating effect Effects 0.000 claims description 11
- 210000002303 tibia Anatomy 0.000 abstract description 33
- 230000000694 effects Effects 0.000 abstract description 4
- 230000002980 postoperative effect Effects 0.000 abstract description 4
- 201000008482 osteoarthritis Diseases 0.000 description 5
- 208000010392 Bone Fractures Diseases 0.000 description 4
- 208000003947 Knee Osteoarthritis Diseases 0.000 description 3
- 210000000988 bone and bone Anatomy 0.000 description 3
- 210000003127 knee Anatomy 0.000 description 2
- 210000000629 knee joint Anatomy 0.000 description 2
- 210000003141 lower extremity Anatomy 0.000 description 2
- 238000001356 surgical procedure Methods 0.000 description 2
- 208000006820 Arthralgia Diseases 0.000 description 1
- 229910001069 Ti alloy Inorganic materials 0.000 description 1
- 238000005299 abrasion Methods 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 210000000845 cartilage Anatomy 0.000 description 1
- 230000008094 contradictory effect Effects 0.000 description 1
- 230000004064 dysfunction Effects 0.000 description 1
- 230000035876 healing Effects 0.000 description 1
- 210000003041 ligament Anatomy 0.000 description 1
- 230000013011 mating Effects 0.000 description 1
- 238000000034 method Methods 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 230000000399 orthopedic effect Effects 0.000 description 1
- 230000002250 progressing effect Effects 0.000 description 1
- 210000001519 tissue Anatomy 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
- A61B17/68—Internal fixation devices, including fasteners and spinal fixators, even if a part thereof projects from the skin
- A61B17/80—Cortical plates, i.e. bone plates; Instruments for holding or positioning cortical plates, or for compressing bones attached to cortical plates
- A61B17/8004—Cortical plates, i.e. bone plates; Instruments for holding or positioning cortical plates, or for compressing bones attached to cortical plates with means for distracting or compressing the bone or bones
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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
- A61B17/80—Cortical plates, i.e. bone plates; Instruments for holding or positioning cortical plates, or for compressing bones attached to cortical plates
- A61B17/8061—Cortical plates, i.e. bone plates; Instruments for holding or positioning cortical plates, or for compressing bones attached to cortical plates specially adapted for particular bones
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- Health & Medical Sciences (AREA)
- Orthopedic Medicine & Surgery (AREA)
- Surgery (AREA)
- Life Sciences & Earth Sciences (AREA)
- Heart & Thoracic Surgery (AREA)
- Nuclear Medicine, Radiotherapy & Molecular Imaging (AREA)
- Engineering & Computer Science (AREA)
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Abstract
The invention discloses a fixed support for a tibial osteotomy, which can fill a gap at the cut part of the tibia, and particularly comprises the steps of fixing a fixed steel plate on the tibia, embedding a first support block into the gap at the cut part of the tibia, driving a second wedge block to slide by rotating a first rotating rod, further pushing the first wedge block to lift so as to push a mandril, and further driving a second support plate to move towards the direction far away from the first support block, so that the purpose of expanding the thickness of the first support block is achieved, namely the first support block can support a larger gap, so that the fixed support is suitable for the cut gaps with different sizes, and the effect of better supporting the tibia is achieved; the gap at the cut part of the tibia is filled, so that the overall strength of the tibia is guaranteed, and complications such as fracture of an osteotomy hinge, loss of a postoperative fixed angle, nonunion of the cut part and the like are avoided.
Description
Technical Field
The invention relates to the technical field of orthopedic medical treatment, in particular to a fixing support for a tibial osteotomy.
Background
Knee osteoarthritis is a degenerative joint disease starting from wear of knee cartilage, and the main clinical manifestations include joint pain, deformity, stiffness, dysfunction and the like, and the incidence rate is high, and the social impact is large. The natural course of knee osteoarthritis is antero-medial osteoarthritis, which may affect all compartments of the knee when progressing to the middle and late stages. The patients often have the condition that the lower limb force line is inverted, the inversion gradually becomes worse along with the abrasion of the knee joint, the life quality of the patients is seriously influenced, and the artificial joint replacement operation has to be carried out when the patients grow to the terminal stage.
Currently, high tibial osteotomy, i.e., HTO surgery, is mostly adopted for surgical treatment of anterior and medial knee osteoarthritis in early and middle stages to correct lower limb force lines and reduce load of medial compartments of the knee joint. The most widely used HTO procedure at this stage is the open wedge osteotomy of the proximal tibia. After the operation is cut, the tibia needs to be fixed by using the bone fracture plate, because of the existence of an open cut bone gap, the overall strength of the tibia is reduced, and complications such as fracture, postoperative fixed angle loss, non-healing of a cut part and the like possibly occur to a cut bone hinge, thereby seriously affecting the clinical curative effect of a HTO operation patient and increasing the risk of operation failure.
Disclosure of Invention
The invention mainly aims to provide a fixing support for tibial osteotomy, aiming at solving the problem that the proximal open wedge-shaped osteotomy of the tibia can cause the tibia to have an open osteotomy gap, and further cause the overall strength of the tibia to be reduced.
In order to achieve the purpose, the technical scheme provided by the invention is as follows:
a fixed support for a tibial osteotomy comprises a fixed steel plate, a first support plate and a first support piece; the first supporting plate is detachably connected to the fixed steel plate; the first supporting piece comprises a first supporting block, a second supporting plate, a top rod, a first wedge-shaped block, a second wedge-shaped block and a first rotating rod; the first supporting block is connected to one side of the first supporting plate, which is far away from the fixed steel plate; the first supporting block is provided with an inner cavity and a first groove; the second supporting plate is connected with the ejector rod; the ejector rod movably penetrates through the first supporting block; the second supporting plate is embedded in the first groove; the first wedge-shaped block is connected to one end, far away from the second supporting plate, of the ejector rod; the first wedge-shaped block and the second wedge-shaped block are both arranged in the inner cavity; the first rotating rod is rotatably arranged in the first supporting block in a penetrating way; one end of the first rotating rod, which is positioned in the inner cavity, is used for abutting against the second wedge block, and the second wedge block is in sliding contact with the first wedge block in a matching manner.
Preferably, a threaded rod is arranged on one side of the first support plate, which is far away from the first support member, and the threaded rod is perpendicular to the first support plate; the fixed steel plate is provided with a first waist hole; the threaded rod is movably arranged in the first waist hole in a penetrating mode, the threaded rod stretches out of one end of the fixed steel plate and is used for screwing a fixing nut, and therefore the first supporting plate is fixed on the fixed steel plate.
Preferably, the first support block is provided with a first threaded hole perpendicular to the first support plate; the fixed steel plate is provided with a second waist hole; the first supporting plate is provided with a first through hole; one end of the first threaded hole penetrates through the inner cavity; the other end of the first threaded hole penetrates through the first through hole; the first through hole is used for being communicated with the second waist hole; the first rotating rod is provided with an external thread matched with the first threaded hole; the first rotating rod is arranged in the first threaded hole in a penetrating mode in a matched mode; one end of the first rotating rod, which is far away from the second wedge-shaped block, penetrates through the first through hole and extends into the second waist hole.
Preferably, one end of the first rotating rod, which extends into the first waist hole, is provided with a cross-shaped groove.
Preferably, a spring is further included; the ejector rod is perpendicular to the first rotating rod and parallel to the first supporting plate; the second support plate is perpendicular to the first support plate; the spring is sleeved on the ejector rod; one end of the spring is connected to the inner wall of the inner cavity; the other end of the spring is connected to the first wedge-shaped block; the spring is in a compressed state so that the second support plate has a tendency to approach the first support block.
Preferably, the device also comprises a limiting rod; the first supporting block comprises a connecting wall arranged between the first groove and the inner cavity; the connecting wall is provided with a limiting hole; the limiting rod is connected to the second supporting plate; the limiting rod is parallel to the ejector rod; the limiting rod is matched with the connecting wall in a sliding mode and penetrates through the connecting wall.
Preferably, the device also comprises a slide rail; the second wedge-shaped block is provided with a chute; the sliding rail is arranged on the inner wall of the inner cavity opposite to the connecting wall; the sliding rail is parallel to the first rotating rod; the sliding rail is embedded in the sliding groove in a matching manner.
Preferably, the device further comprises a third supporting plate and a second supporting piece; the third supporting plate is detachably connected to the fixed steel plate; the second supporting piece comprises a second supporting block, a fourth supporting plate, a first connecting rod, a second connecting rod, a third connecting rod, a fourth connecting rod, a second rotating rod, a first movable block and a second movable block;
the second supporting block is arranged on one side, away from the fixed steel plate, of the third supporting plate; the second supporting block is provided with a second groove; the fourth supporting plate can be movably embedded into the second groove; the first connecting rod and the second connecting rod are hinged to the inner bottom wall of the second groove; the other end of the first connecting rod is hinged to the first movable block; the other end of the second connecting rod is hinged to the second movable block; one end of the third connecting rod is hinged to the fourth supporting plate, and the other end of the third connecting rod is hinged to the first movable block; one end of the fourth connecting rod is hinged to the fourth supporting plate, and the other end of the fourth connecting rod is hinged to the second movable block; the central axes of the first connecting rod, the second connecting rod, the third connecting rod and the fourth connecting rod are positioned on the same plane; the second rotating rod part is provided with an external thread; the first movable block is provided with a second threaded hole matched with the external thread of the second rotating rod, and the first movable block is closer to the fixed steel plate than the second movable block; one end of the second rotating rod is rotatably arranged on the second movable block in a penetrating mode, and the second rotating rod is matched and screwed on the first movable block through the second threaded hole; the second rotating rod is movably arranged in the second supporting block in a penetrating mode.
Preferably, a first stop block is arranged at one end of the second rotating rod; the first stop block is positioned on one side, away from the first movable block, of the second movable block; the first stop block is used for preventing the second rotating rod from being separated from the second movable block.
Preferably, the second supporting block is provided with a third threaded hole perpendicular to the third supporting plate; the third supporting plate is provided with a second through hole; one end of the third threaded hole penetrates through the second groove; the other end of the third threaded hole penetrates through the second through hole; the second through hole is used for being communicated with the second waist hole; the second rotating rod is provided with an external thread matched with the third threaded hole; the second rotating rod is arranged in the third threaded hole in a penetrating mode in a matching mode; one end of the second rotating rod, which is far away from the second movable block, penetrates through the second through hole and extends into the second waist hole. Compared with the prior art, the invention at least has the following beneficial effects:
the fixed support for the tibial osteotomy can fill a gap at the cut part of the tibia, and particularly, a fixed steel plate is fixed to the tibia, a first support block is embedded into the gap at the cut part of the tibia, a second wedge block can be driven to slide by rotating a first rotating rod, the first wedge block is further pushed to lift, a push rod is further pushed, a second support plate is further driven to move in the direction away from the first support block, the purpose of expanding the thickness of the first support block is achieved, namely, the first support block can support a larger gap, so that the fixed support is suitable for the cut gaps of different sizes, and the effect of better supporting the tibia is achieved; the gap at the cut part of the tibia is filled, so that the overall strength of the tibia is guaranteed, and complications such as fracture of an osteotomy hinge, loss of a postoperative fixed angle, nonunion of the cut part and the like are avoided.
Drawings
In order to more clearly illustrate the embodiments or technical solutions of the present invention, the drawings used in the embodiments or technical solutions of the prior art will be briefly described below, it is obvious that the drawings in the following description are only some embodiments of the present invention, and for those skilled in the art, other drawings can be obtained according to the structures shown in the drawings without creative efforts.
FIG. 1 is a schematic structural view of an embodiment of a tibial osteotomy fixation support of the present invention;
FIG. 2 is an enlarged view of detail A in FIG. 1;
FIG. 3 is a partial schematic structural view of an embodiment of a tibial osteotomy fixation support of the present invention;
fig. 4 is a partial structural view of another embodiment of the fixing support for tibial osteotomy according to the present invention.
Description of the reference numerals:
110. fixing a steel plate; 120. screw holes; 130. a first waist hole; 140. a first support plate; 150. a first support block; 160. a threaded rod; 170. a nut; 180. a second waist hole; 190. a first through hole; 210. a first rotating lever; 220. a first threaded hole; 230. an inner cavity; 240. a first groove; 250. a second support plate; 260. a top rod; 270. a spring; 280. a first wedge block; 290. a second wedge block; 310. a slide rail; 320. a connecting wall; 330. a limiting hole; 340. a limiting rod; 350. a third support plate; 360. a second support block; 370. a second through hole; 380. a third threaded hole; 390. a second rotating lever; 410. a second groove; 420. a fourth support plate; 430. a first link; 440. a second link; 450. a third link; 460. a fourth link; 470. a first movable block; 480. a second movable block; 490. a first stop.
The implementation, functional features and advantages of the objects of the present invention will be further explained with reference to the accompanying drawings.
Detailed Description
The technical solutions in the embodiments of the present invention will be described clearly and completely with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.
It should be noted that all directional indicators (such as up, down, left, right, front, back \8230;) in the embodiments of the present invention are only used to explain the relative positional relationship between the components, the motion situation, etc. in a specific posture (as shown in the attached drawings), and if the specific posture is changed, the directional indicator is changed accordingly.
In addition, the descriptions related to "first", "second", etc. in the present invention are only for descriptive purposes and are not to be construed as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include at least one of the feature. In the description of the present invention, "a plurality" means at least two, e.g., two, three, etc., unless specifically limited otherwise.
In the present invention, unless otherwise expressly stated or limited, the terms "connected," "secured," and the like are to be construed broadly, and for example, "secured" may be a fixed connection, a removable connection, or an integral part; can be mechanically or electrically connected; they may be directly connected or indirectly connected through intervening media, or they may be connected internally or in any other suitable relationship, unless expressly stated otherwise. The specific meanings of the above terms in the present invention can be understood by those skilled in the art according to specific situations.
In addition, the technical solutions in the embodiments of the present invention may be combined with each other, but it must be based on the realization of those skilled in the art, and when the technical solutions are contradictory or cannot be realized, such a combination of technical solutions should not be considered to exist, and is not within the protection scope of the present invention.
The invention provides a fixing support for a tibial osteotomy.
Referring to fig. 1 to 4, in an embodiment of the fixing support for tibial osteotomy according to the present invention, the fixing support for tibial osteotomy includes a fixing steel plate 110, a first supporting plate 140 and a first support member; a plurality of screw holes 120 are formed in both upper and lower portions of the fixing steel plate 110, and the screw holes 120 are used to pass fixing screws (not shown) through which the fixing steel plate 110 is fixed to the tibia.
The fixing screw is obliquely embedded into the tibia when penetrating through the screw hole, namely, the fixing screw is not embedded at an angle perpendicular to the fixing steel plate 110; and the set screw is inserted into the tibia with care being taken to avoid damaging the ligaments and musculature between the bones.
The first support plate 140 is detachably coupled to the fixed steel plate 110; the first support comprises a first support block 150, a second support plate 250, a top rod 260, a first wedge block 280, a second wedge block 290 and a first rotating rod 210; the first supporting block 150 is connected to a side of the first supporting plate 140 away from the fixing steel plate 110; the first supporting block 150 is provided with an inner cavity 230 and a first groove 240; the second support plate 250 is connected with a top rod 260; the top rod 260 movably penetrates through the first supporting block 150; the second supporting plate 250 is embedded in the first groove 240; the first wedge block 280 is connected to one end of the top bar 260 away from the second support plate 250; the first wedge block 280 and the second wedge block 290 are both disposed in the inner cavity 230; the first rotating rod 210 is rotatably arranged through the first supporting block 150; one end of first turn bar 210 within inner cavity 230 is adapted to abut (i.e., make movable contact with) second wedge block 290, and second wedge block 290 is in mating sliding contact with first wedge block 280.
The fixed support for the tibial osteotomy can fill a gap at the cut position of the tibia, and particularly, firstly, the fixed steel plate 110 is fixed on the tibia, then the first support block 150 is embedded into the gap at the cut position of the tibia, and then the first rotating rod 210 is rotated to drive the second wedge block 290 to slide, so that the first wedge block 280 is pushed to lift, the ejector rod 260 is pushed, the second support plate 250 is driven to move in the direction far away from the first support block 150, and the purpose of expanding the thickness of the first support block 150 is achieved, namely, the first support block 150 can support a larger gap, so that the fixed support is suitable for the cut gaps with different sizes, and the effect of better supporting the tibia is achieved; the gap at the cut part of the tibia is filled, so that the overall strength of the tibia is guaranteed, and complications such as fracture of an osteotomy hinge, loss of a postoperative fixed angle, nonunion of the cut part and the like are avoided.
In addition, as shown in fig. 1, a side of the first support plate 140 facing away from the first support member is provided with a threaded rod 160, and the threaded rod 160 is perpendicular to the first support plate 140; the fixed steel plate 110 is provided with a first waist hole 130, and the length direction of the first waist hole 130 is consistent with the extension direction of the fixed steel plate 110; the threaded rod 160 movably penetrates through the first waist hole 130, and one end of the threaded rod 160 extending out of the fixed steel plate 110 is used for screwing the fixing nut 170 so as to fix the first support plate 140 to the fixed steel plate 110. Thus, the position of the first support plate 140 relative to the fixed steel plate 110 can be adjusted.
Meanwhile, the first support block 150 is provided with a first threaded hole 220 perpendicular to the first support plate 140; the fixed steel plate 110 is provided with a second waist hole 180, wherein the extending direction of the second waist hole 180 is consistent with the extending direction of the first waist hole 130; the first support plate 140 is provided with a first through hole 190; one end of the first screw hole 220 penetrates the inner cavity 230; the other end of the first screw hole 220 penetrates the first through hole 190; the first through hole 190 is used for communicating with the second waist hole 180; the first rotating rod 210 is provided with an external thread matched with the first threaded hole 220; the first rotating rod 210 is arranged in the first threaded hole 220 in a matching and penetrating manner; one end of the first rotating rod 210 far from the second wedge-shaped block 290 penetrates through the first through hole 190 and extends into the second waist hole 180. And a cross-shaped groove (not numbered) is formed at one end of the first rotating rod 210 extending into the first waist hole 130.
Through the above technical scheme, during an operation, the position of the second supporting plate 250 can be adjusted by inserting the electric screwdriver into the first waist hole 130 and screwing the first rotating rod 210.
In addition, the fixing support for the tibial osteotomy further comprises a spring 270; the top rod 260 is perpendicular to the first rotating rod 210, and the top rod 260 is parallel to the first supporting plate 140; the second support plate 250 is perpendicular to the first support plate 140; the spring 270 is sleeved on the top rod 260; one end of the spring 270 is connected to the inner wall of the inner chamber 230; the other end of the spring 270 is connected to a first wedge 280; the spring 270 is in a compressed state such that the second support plate 250 has a tendency to approach the first support block 150.
Through the arrangement of the spring 270, the second support plate 250 tends to approach the first support block 150, and the first wedge block 280 can press the second wedge block 290, so that the stability of the whole structure is ensured.
Meanwhile, the fixing support for the tibial osteotomy comprises a limiting rod 340; the first support block 150 includes a connection wall 320 disposed between the first recess 240 and the inner cavity 230; the connecting wall 320 is provided with a limiting hole 330; the stopper bar 340 is connected to the second support plate 250; the limiting rod 340 is parallel to the top rod 260; the limiting rod 340 is slidably disposed through the connecting wall 320. By providing the limiting rod 340, it is ensured that the second support plate 250 does not shake.
In addition, the fixing support for the tibial osteotomy further comprises a sliding rail 310; the second wedge-shaped block 290 is provided with a sliding groove (not shown); the sliding rail 310 is disposed on an inner wall of the inner cavity 230 opposite to the connecting wall 320; the sliding rail 310 is parallel to the first rotating rod 210 and perpendicular to the top rod 260; the sliding rail 310 is engaged with the sliding groove. This is provided to ensure that the second wedge 290 only slides linearly.
Meanwhile, as shown in fig. 4, in another embodiment, the fixing support for tibial osteotomy further includes a third supporting plate 350 and a second support; third support plate 350 is removably attached to stationary steel plate 110 (again, removably attached to stationary steel plate 110 by the engagement of threaded rod 160 and nut 170); the second support includes a second support block 360, a fourth support plate 420, a first link 430, a second link 440, a third link 450, a fourth link 460, a second turn lever 390, a first movable block 470, and a second movable block 480.
The second supporting block 360 is disposed on a side of the third supporting plate 350 away from the fixing steel plate 110; the second supporting block 360 is provided with a second groove 410; the fourth supporting plate 420 can be movably inserted into the second groove 410; the first link 430 and the second link 440 are both hinged to the inner bottom wall of the second groove 410; the other end of the first connecting rod 430 is hinged to the first movable block 470; the other end of the second connecting rod 440 is hinged to the second movable block 480; one end of the third connecting rod 450 is hinged to the fourth supporting plate 420, and the other end is hinged to the first movable block 470; one end of the fourth link 460 is hinged to the fourth support plate 420, and the other end is hinged to the second movable block 480; the central axes of the first link 430, the second link 440, the third link 450, and the fourth link 460 are located on the same plane; the second rotating link 390 is partially provided with external threads; the first movable block 470 is opened with a second screw hole (not shown) engaged with the external screw thread of the second rotating link 390, and the first movable block 470 is closer to the fixed steel plate 110 than the second movable block 480; one end of the second rotating rod 390 is rotatably disposed through the second movable block 480, and the second rotating rod 390 is screwed on the first movable block 470 through the second threaded hole; the second rotating rod 390 is movably disposed through the second supporting block 360.
When the tibia supporting device is used, the fixing steel plate 110 is fixed to a tibia, the second supporting block 360 is embedded into a gap formed at the cut position of the tibia, the fourth supporting plate 420 is driven to move relative to the second supporting block 360 by rotating the second rotating rod 390, and therefore the purpose of expanding the thickness of the second supporting block 360 is achieved, namely the second supporting block 360 can support a larger gap to be suitable for the cut gaps of different sizes and play a role of better supporting the tibia
In addition, one end of the second rotating lever 390 is provided with a first stopper 490; the first stop 490 is located on a side of the second movable block 480 facing away from the first movable block 470; the first stopper 490 serves to prevent the second rotating lever 390 from being disengaged from the second movable block 480. The second supporting block 360 is provided with a third threaded hole 380 perpendicular to the third supporting plate 350; the third supporting plate 350 is provided with a second through hole 370; one end of the third threaded hole 380 passes through the second groove 410; the other end of the third threaded hole 380 passes through the second through hole 370; the second through hole 370 is used for communicating with the second waist hole 180; the second rotary link 390 is provided with an external thread engaged with the third threaded hole 380; the second rotating rod 390 is fittingly inserted into the third threaded hole 380; one end of the second rotating rod 390 far away from the second movable block 480 penetrates through the second through hole 370 and extends into the second waist hole 180. Through above-mentioned technical scheme, perfect this shin bone osteotomy is with fixed support's structure. The first supporting piece and the second supporting piece are both made of titanium alloy, so that the affinity performance with human tissues is better while the structural strength is ensured.
The above description is only a preferred embodiment of the present invention, and is not intended to limit the scope of the present invention, and all modifications and equivalents of the present invention, which are made by the contents of the present specification and the accompanying drawings, or directly/indirectly applied to other related technical fields, are included in the scope of the present invention.
Claims (5)
1. A fixed support for a tibial osteotomy is characterized by comprising a fixed steel plate, a first support plate and a first support piece; the first supporting plate is detachably connected to the fixed steel plate; the first supporting piece comprises a first supporting block, a second supporting plate, a top rod, a first wedge-shaped block, a second wedge-shaped block and a first rotating rod; the first supporting block is connected to one side of the first supporting plate, which is far away from the fixed steel plate; the first supporting block is provided with an inner cavity and a first groove; the second supporting plate is connected with the ejector rod; the ejector rod movably penetrates through the first supporting block; the second supporting plate is embedded in the first groove; the first wedge-shaped block is connected to one end, far away from the second supporting plate, of the ejector rod; the first wedge-shaped block and the second wedge-shaped block are both arranged in the inner cavity; the first rotating rod is rotatably arranged on the first supporting block in a penetrating mode; one end of the first rotating rod, which is positioned in the inner cavity, is used for abutting against the second wedge-shaped block, and the second wedge-shaped block is in sliding contact with the first wedge-shaped block in a matching manner;
a threaded rod is arranged on one side of the first supporting plate, which is far away from the first supporting piece, and the threaded rod is perpendicular to the first supporting plate; the fixed steel plate is provided with a first waist hole; the threaded rod movably penetrates through the first waist hole, and one end of the threaded rod extending out of the fixed steel plate is used for screwing a fixed nut so as to fix the first supporting plate on the fixed steel plate;
the device also comprises a spring; the ejector rod is perpendicular to the first rotating rod and parallel to the first supporting plate; the second support plate is perpendicular to the first support plate; the spring is sleeved on the ejector rod; one end of the spring is connected to the inner wall of the inner cavity; the other end of the spring is connected to the first wedge-shaped block; the spring is in a compressed state so that the second support plate has a tendency to approach the first support block.
2. The fixing support for the tibial osteotomy according to claim 1, wherein said first support block defines a first threaded hole perpendicular to said first support plate; the fixed steel plate is provided with a second waist hole; the first supporting plate is provided with a first through hole; one end of the first threaded hole penetrates through the inner cavity; the other end of the first threaded hole penetrates through the first through hole; the first through hole is used for being communicated with the second waist hole; the first rotating rod is provided with an external thread matched with the first threaded hole; the first rotating rod is arranged in the first threaded hole in a penetrating mode in a matching mode; one end of the first rotating rod, which is far away from the second wedge-shaped block, penetrates through the first through hole and extends into the second waist hole.
3. The fixed support for the tibial osteotomy of claim 2, wherein an end of said first rotating rod extending into said first waist hole is provided with a cross-shaped slot.
4. The tibial osteotomy fixation support of claim 3, further comprising a stop bar; the first supporting block comprises a connecting wall arranged between the first groove and the inner cavity; the connecting wall is provided with a limiting hole; the limiting rod is connected to the second supporting plate; the limiting rod is parallel to the ejector rod; the limiting rod is matched with the connecting wall in a sliding and penetrating mode.
5. The fixed support for tibial osteotomy of claim 4, further comprising a slide rail; the second wedge-shaped block is provided with a chute; the sliding rail is arranged on the inner wall of the inner cavity opposite to the connecting wall; the sliding rail is parallel to the first rotating rod; the sliding rail is embedded in the sliding groove in a matching manner.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202210312259.4A CN114587556B (en) | 2022-03-28 | 2022-03-28 | Fixed support for tibial osteotomy |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202210312259.4A CN114587556B (en) | 2022-03-28 | 2022-03-28 | Fixed support for tibial osteotomy |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN114587556A CN114587556A (en) | 2022-06-07 |
| CN114587556B true CN114587556B (en) | 2023-03-10 |
Family
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| CN116019538B (en) * | 2023-03-29 | 2023-06-23 | 中国人民解放军联勤保障部队第九二〇医院 | Implant for high-level tibia osteotomy |
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