CN113768600A - Acromioclavicular joint micro-moving plate and acromioclavicular joint internal fixation system - Google Patents
Acromioclavicular joint micro-moving plate and acromioclavicular joint internal fixation system Download PDFInfo
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- CN113768600A CN113768600A CN202110971611.0A CN202110971611A CN113768600A CN 113768600 A CN113768600 A CN 113768600A CN 202110971611 A CN202110971611 A CN 202110971611A CN 113768600 A CN113768600 A CN 113768600A
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- clavicle
- plate
- main body
- acromioclavicular joint
- connecting piece
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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
- A61B17/8052—Cortical plates, i.e. bone plates; Instruments for holding or positioning cortical plates, or for compressing bones attached to cortical plates immobilised relative to screws by interlocking form of the heads and plate holes, e.g. conical or threaded
- A61B17/8057—Cortical plates, i.e. bone plates; Instruments for holding or positioning cortical plates, or for compressing bones attached to cortical plates immobilised relative to screws by interlocking form of the heads and plate holes, e.g. conical or threaded the interlocking form comprising a thread
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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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- 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
- A61B2017/564—Methods for bone or joint treatment
Abstract
The invention provides a acromioclavicular joint micromotion plate and an acromioclavicular joint internal fixation system, wherein the acromioclavicular joint micromotion plate comprises: the clavicle plate comprises a clavicle plate main body, a shoulder peak plate and a connecting piece, wherein the connecting piece is hinged with the clavicle plate main body and/or the shoulder peak plate, a gap is formed between the connecting piece and the side walls on the two sides of the connecting groove, the micro-motion connection between the clavicle plate main body and the shoulder peak steel plate is realized, the clavicle and the shoulder peak can be fixed, and the micro-motion degree of a shoulder joint is reserved.
Description
Technical Field
The invention relates to the field of medical instruments, in particular to a acromioclavicular joint micro-moving plate and an acromioclavicular joint internal fixation system.
Background
The patient has distal clavicle fracture combined with acromion fracture, the common treatment scheme is that two fracture parts are treated separately, the clavicle is treated by adopting a special anatomical bone plate or a reconstruction plate, and the acromion fracture is treated by adopting the reconstruction bone plate without connection. However, the distal clavicle and the acromion are a joint, and along with the movement of the human body, the joint surface is movable, the fracture is treated separately, the original anatomical features cannot be perfectly reproduced, and the fracture is also unstable due to more ligament traction, so that the healing of the fracture is delayed.
In clinic, only one hook bone plate can give consideration to clavicle and acromion. The plate trunk part of the hook bone is fixed on the clavicle, and the lower edge of the shoulder peak is hooked by a hook so as to simulate the upward movement of the clavicle, but the postoperative pain is often accompanied by shoulder pain, and the hook part is weak in structure and easy to break.
Therefore, the acromioclavicular joint micromotion plate which can fix the clavicle and the acromion and reserve the micro-mobility of the acromioclavicular joint becomes the key for solving the problems.
Disclosure of Invention
The invention aims to provide a acromioclavicular joint micro-moving plate and an acromioclavicular joint internal fixation system, wherein the clavicle plate main body and the acromioclavicular steel plate are in micro-motion connection, so that the clavicle and the acromioclavicular joint can be fixed, and the micro-motion degree of the acromioclavicular joint is kept.
In order to achieve the purpose, the invention adopts the following technical scheme that:
a acromioclavicular joint microplates, comprising:
the clavicle plate main body is used for fixing the clavicle on the clavicle in a fitting manner;
the shoulder peak plate is used for being attached to the shoulder bones to fix the shoulder bones;
the connecting piece is used for connecting the clavicle plate main body and the acromion plate, one end of the connecting piece is connected with the clavicle plate main body to form a first connecting part, and the other end of the connecting piece is connected with the acromion plate to form a second connecting part;
at least one of the first connection portion and the second connection portion includes:
a connecting groove, wherein a pin shaft is arranged; and the combination of (a) and (b),
the connecting block is provided with a pin hole;
the pin shaft can penetrate through the pin hole to connect the connecting block with the connecting groove, and a gap is formed between the connecting block and the side walls of the two sides of the connecting groove after connection.
Further, the length of the gap is 0.5-1 mm.
Further, the diameter of the pin hole is larger than that of the pin shaft.
Furthermore, the diameter length of the pin hole is 0.2-0.4 mm longer than that of the pin shaft.
Furthermore, a plurality of positioning holes are formed in the near end of the clavicle plate main body, and a plurality of first screw holes are formed in the middle and the far end of the clavicle plate main body.
Further, the edge of the bone-locking plate main body is provided with a plurality of arc-shaped notches.
Furthermore, the shoulder peak plate is nearly circular, the edge of the shoulder peak plate is provided with a rounding structure, and the shoulder peak plate is provided with a plurality of second screw holes.
Furthermore, the connecting piece is rectangular, the width of the connecting piece is 6-8 mm, and the thickness of the connecting piece is 2-4 mm.
Furthermore, the connecting piece is made of a metal material or a non-metal material;
preferably, the connector comprises a plurality of connecting wires.
The invention also provides an acromioclavicular joint internal fixation system which comprises the acromioclavicular joint micro-plate and the locking screw.
Compared with the prior art, the invention has the beneficial effects that:
1. because the connecting block and the side walls at the two sides of the connecting groove are provided with gaps, the clavicle plate main body is in micro-motion connection with the acromion steel plate, so that the clavicle and the acromion can be fixed, and the micro-mobility of the acromioclavicular joint is reserved; the requirement of micromotion of the acromioclavicular joint can be met;
2. the diameter of the pin hole is larger than that of the pin shaft, so that the micro-mobility between the clavicle plate main body and the acromion steel plate is further improved;
3. the edges of the shoulder steel plate and the connecting block are provided with the rounding structures, so that stress concentration can be reduced, and the use comfort level is improved;
4. the connecting piece has wide material selection range, can be made of metal or non-metal, can be provided with a plurality of connecting wires, has various connecting forms, can adapt to different requirements, and has wide application range;
5. the proximal section of the clavicle plate main body is provided with a positioning hole, and the middle section and the distal section are provided with the first screw holes, so that the strength of the clavicle plate is ensured.
Drawings
Fig. 1 is a perspective view of a acromioclavicular joint micromolar plate according to one embodiment of the present invention.
Fig. 2 is a perspective view of the clavicle plate body in the micromolar plate of the acromioclavicular joint according to one embodiment of the present invention.
Fig. 3 is a perspective view of a shoulder plate and a connector of a micromover plate of a acromioclavicular joint according to an embodiment of the present invention.
Detailed Description
The invention is described in further detail below with reference to the drawings so that those skilled in the art can practice the invention with reference to the description.
It will be understood that terms such as "having," "including," and "comprising," as used herein, do not preclude the presence or addition of one or more other elements or groups thereof.
The invention provides a acromioclavicular joint microplates, comprising:
the clavicle plate main body is used for fixing the clavicle on the clavicle in a fitting manner;
the shoulder peak plate is used for being attached to the shoulder bones to fix the shoulder bones;
the connecting piece is used for connecting the clavicle plate main body and the acromion plate, one end of the connecting piece is connected with the clavicle plate main body to form a first connecting part, and the other end of the connecting piece is connected with the acromion plate to form a second connecting part;
at least one of the first connection portion and the second connection portion includes:
a connecting groove, wherein a pin shaft is arranged; and the combination of (a) and (b),
the connecting block is provided with a pin hole;
the pin shaft can penetrate through the pin hole to connect the connecting block with the connecting groove, and a gap is formed between the connecting block and the side walls of the two sides of the connecting groove after connection.
According to the acromioclavicular joint micromotion plate provided by the invention, one end of the connecting piece is connected with the clavicle plate main body, and the other end of the connecting piece is connected with the acromioclavicular plate. The connection form of the connecting piece, the clavicle plate main body and the shoulder peak plate can be as follows:
the connecting piece and the clavicle plate main body are of an integral structure, and the free end of the connecting piece is in micro-motion connection with the shoulder peak plate; or the like, or, alternatively,
the connecting piece and the shoulder peak plate are of an integral structure, and the free end of the connecting piece is in micro-motion connection with the clavicle plate main body; or the like, or, alternatively,
the two ends of the connecting piece are respectively connected with the clavicle plate main body and the shoulder peak plate in a micro-motion way.
The micro-motion connection is the connection between the connecting groove and the connecting block:
a connecting groove, wherein a pin shaft is arranged;
the connecting block is provided with a pin hole;
the pin shaft can penetrate through the pin hole to connect the connecting block with the connecting groove, and a gap is formed between the connecting block and the side walls of the two sides of the connecting groove after connection.
Specifically, a first connecting component is arranged at the near end of the clavicle plate main body; the far end of the shoulder peak plate is provided with a second connecting assembly;
the first end of the connecting piece is provided with a third connecting component; a fourth connecting component is arranged at the second end of the connecting piece;
the first connecting assembly is connected with the third connecting assembly to form a first connecting part;
the second connecting component is connected with the fourth connecting component to form a second connecting part;
one of the first connecting assembly and the third connecting assembly is a connecting groove, and the other one is a connecting block; one of the second connecting assembly and the fourth connecting assembly is a connecting groove, and the other one is a connecting block.
The connecting piece is connected with the clavicle plate main body and/or the shoulder peak plate through the pin shaft, and a gap is arranged between the connecting piece and the side walls of two sides of the connecting groove, so that the micro-motion connection between the clavicle plate main body and the shoulder peak plate can realize rotation around the pin shaft and axial movement along the pin shaft, namely, the clavicle plate main body and the shoulder peak plate can fix the clavicle and the shoulder peak through the connection, the micro-motion of the shoulder clavicle joint is kept, the micro-motion accords with the physiological function of the shoulder clavicle joint, the recovery effect on the fracture and dislocation of the shoulder clavicle joint is excellent, the internal fixation mode for treating the fracture and dislocation of the shoulder clavicle joint is excellent, and the internal fixation mode is worthy of popularization and use.
Preferably, the length of the gap is 0.5-1.0 mm, such as 0.6mm, 0.7mm, 0.8mm or 0.9mm, and the length of the gap can be most consistent with the physiological micromotion of the acromioclavicular joint.
Furthermore, the diameter of the pin hole is larger than that of the pin shaft, and the diameter of the pin hole is larger than that of the pin shaft, so that the micro-motion degree between the clavicle plate main body and the acromion steel plate is further improved, and the micro-motion degree of the search joint micro-motion plate is more consistent with the motion of a human acromioclavicular joint. Preferably, the diameter length of the pin hole is 0.2-0.4 mm longer than that of the pin shaft, such as 0.3mm, and the effect is optimal within the range.
Further, in order to facilitate the implantation of the clavicular plate body in the body and to ensure the strength of the clavicular plate body, a plurality of positioning holes, such as k-wire holes, are provided at the proximal end of the clavicular plate body, and a plurality of first screw holes are provided at the middle and distal ends of the clavicular plate body. In order to avoid stress concentration and ensure the strength of the clavicle plate main body, the positioning holes and the first screw holes are independently and uniformly distributed on the clavicle plate main body.
Further, in order to facilitate the shaping of the bone plate in the operation, the edge of the clavicle plate main body is provided with a plurality of arc-shaped notches.
Further, the shoulder peak plate is nearly circular, the edge of shoulder peak plate is equipped with the radius structure shoulder peak plate is last to be provided with a plurality of second screw holes to improve the comfort level that the shoulder peak plate used, can reduce stress concentration in addition, preferred a plurality of second screw holes evenly distributed is on the shoulder peak plate.
Preferably, the connecting piece is designed according to the position of a bone, is connected through a curved surface in a three-dimensional space, has the characteristic of anatomical design, can smoothly stride over the clavicle and the acromion joint by considering the positions of the clavicle and the acromion and peripheral blood vessels and ligaments, has the width of 6-8 mm and the thickness of 2-4 mm, and reduces the stimulation of soft tissues by peripheral round corners.
The connecting piece can be made of metal or nonmetal, and when the connecting piece is made of metal, the connecting piece preferably conforms to the anatomical design of the joint of the acromion and the clavicle. Specifically, the metal material may be stainless steel, pure titanium, titanium alloy, or the like, or may be other metal material suitable for implantation into a human body; the non-metal material can be polyethylene or polyetheretherketone, and other non-metal materials suitable for being implanted into a human body can be selected.
Furthermore, the connecting piece includes a plurality of connecting wires, namely the shoulder peak plate is connected with the clavicle plate main body through the wires, and the connecting wires can be made of metal or nonmetal materials.
The advantage that the connecting wire is connected lies in: the connecting piece can adapt to the requirements according to the anatomical characteristics of the acromioclavicular joint, and the shape of the connecting piece is convenient to adjust. The connecting line can also select absorbable material or non-absorbable material according to actual need.
The clavicle plate main body and the shoulder peak plate are preferably made of metal materials, such as stainless steel, titanium alloy or pure titanium.
In another aspect, the present invention also provides an acromioclavicular joint internal fixation system, which includes the acromioclavicular joint micro plate and the locking screw as described above.
Example one
A acromioclavicular joint micromotor plate and an acromioclavicular joint internal fixation system, as shown in fig. 1-3, the acromioclavicular joint micromotor plate comprising:
the clavicle plate body 110 is made of a conventional clavicle fracture steel plate, a connecting groove 111 is arranged at the proximal end of the clavicle plate body 110, and a pin shaft 112 is arranged in the connecting groove 111 and used for fixing the clavicle by being attached to the clavicle. Preferably, a plurality of positioning holes 113 are uniformly distributed at the proximal end of the clavicle plate body 110, and the positioning holes 113 may be k-wire holes. A plurality of first screw holes 114 are provided in the plate body at both the central and distal ends thereof. The positioning hole 113 is used for placing a plurality of positioning nails or positioning needles to temporarily fix or fix the fractured small bone blocks of the articular surface, and the first screw hole 114 is used for placing a first locking screw to provide a stronger fixing effect. The first screw hole 114 may be a conventional threaded hole, a compound locking hole, or a universal locking hole. More preferably, a plurality of arc-shaped notches 115 are formed at the edge of the clavicle plate body 110. The arc notch 115 is used for increasing the plasticity of the clavicle plate main body 110 in the operation and changing the radian of the clavicle plate main body 110, so that the clavicle plate main body can better fit the bones of different people. Simultaneously, the setting of a plurality of arc breach 115 can also reduce the oppression of clavicle board main part 110 to the clavicle, reduces the influence of clavicle board main part 110 to the blood circulation.
The acromion steel plate 120 is provided with a connecting member 130 extending toward the main body of the clavicle plate 111, a connecting block 131 is provided at a free end of the connecting member 130, the connecting block 131 is inserted into the connecting groove 111, and a pin hole 131a for passing the pin shaft 112 is provided on the connecting block 131 for fixing the shoulder bone while being fitted over the shoulder bone. Preferably, the acromion steel plate 120 is nearly circular, and a rounded structure is provided at the edge of the acromion steel plate 120. More preferably, a plurality of second screw holes 122 for fixing shoulder fragments are uniformly formed in the acromion steel plate 120.
Preferably, the clavicle plate body and the acromion plate are independently made of a metal material capable of being implanted into a human body, such as stainless steel, pure titanium or titanium alloy, and the skilled person can select a suitable material according to actual needs.
Preferably, the connection member 130 is made of any one of stainless steel, pure titanium, titanium alloy, PE, and PEEK. Preferably, the base of the connecting piece 130 is in smooth transition connection with the shoulder steel plate 120, the width of the connecting piece 130 is 6-8 mm, the thickness of the connecting piece 130 is 2-4 mm, and the edge of the connecting piece 130 is provided with a rounding structure.
A gap is arranged between the connecting block 131 and the side walls of the two sides of the connecting groove 111. Preferably, the length of the gap is 0.5 to 1 mm. More preferably, the diameter of the pin hole 131a is larger than the diameter of the pin 112. The diameter length of the pin hole 131a is 0.2-0.4 mm longer than that of the pin shaft 112.
In the using process, the clavicle plate body 110 and the acromion steel plate 120 are respectively attached to the clavicle and the acromion, then the connecting block 131 is inserted into the connecting groove 111, and then the pin shaft 112 is inserted into the pin hole 131a of the connecting block 131, so as to realize the hinge joint. Because a gap is arranged between the connecting block 131 and the side walls of the two sides of the connecting groove 111, the connecting piece 130 can rotate relative to the pin shaft, and can slide along the line shaft, so that the requirement of micro-motion connection at the joint is met.
Preferably, the length of the gap is 0.6-0.9 mm. More preferably, the length of the gap is 0.8 mm.
Preferably, the diameter length of the pin hole 131a is 0.25 to 0.35mm longer than the diameter length of the pin 112. More preferably, the diameter length of the pin hole 131a is 0.3mm longer than the diameter length of the pin shaft 112.
Preferably, the number of the shoulder screw holes 122 is 5. More preferably, the shoulder screw hole 122 has a diameter of 2.7 mm.
Preferably, the width of the connecting member 130 is 6.5 to 7.5mm, and the thickness is 2.5 to 3.5 mm. More preferably, the connecting member 130 has a width of 7mm and a thickness of 3 mm.
An acromioclavicular intra-fixation system includes the acromioclavicular micromover plate as described above, and further includes a set screw or pin disposed in the set hole 113, a first locking screw disposed in the first screw hole 114, and a second locking screw disposed in the second screw hole 122.
Example two
A acromioclavicular joint micromotion plate and an acromioclavicular joint internal fixation system are provided, the acromioclavicular joint micromotion plate comprises:
the clavicle plate main body is made of a conventional clavicle fracture steel plate, a first connecting groove is formed in the near end of the clavicle plate main body, and a first pin shaft is arranged in the first connecting groove and used for fixing the clavicle by being attached to the clavicle. Preferably, a plurality of positioning holes are uniformly distributed at the near end of the clavicle plate main body, and the positioning holes can be Kirschner wire holes. A plurality of first screw holes are uniformly distributed in the middle and the far end of the bone plate main body. The locating hole is used for settling a plurality of locating nails or locating needles, plays the role of temporarily fixing or fixing the fractured ossicle of the articular surface, and the first screw hole is used for settling a first locking screw, thereby providing stronger fixing effect. The first screw hole may be a conventional threaded hole, a compound locking hole or a universal locking hole. Preferably, the clavicle plate body has a plurality of arc notches at its edge. The arc-shaped notch is used for increasing the plasticity of the clavicle plate main body in the operation and changing the radian of the clavicle plate main body, so that the clavicle plate main body can be more attached to bones of different people. Simultaneously, the setting of a plurality of arc breachs can also reduce the oppression of clavicle plate main part to the clavicle, reduces the influence of clavicle plate main part to blood circulation.
The acromion steel plate is used for being attached to shoulder bones to fix the shoulder bones, is nearly circular, and is provided with a rounding structure at the edge; one end of the acromion steel plate, which is close to the clavicle plate main body, is provided with a second connecting groove, and a second pin shaft is arranged in the second connecting groove; in addition, a plurality of second screw holes for fixing shoulder bone fragments are uniformly distributed on the acromion steel plate, and second locking screws are arranged in the second screw holes;
the free ends of the two ends of the connecting piece are respectively provided with a first connecting block and a second connecting block, and the first connecting block and the second connecting block are respectively provided with a pin hole for a pin shaft to pass through; the first connecting block is inserted into the first connecting groove, and a first pin shaft of the clavicle plate main body penetrates through a pin hole of the first connecting block; the second connecting block is inserted into the second connecting groove, and a second pin shaft of the shoulder steel plate penetrates through a pin hole of the second connecting block; a gap is reserved between the first connecting block and the side walls of the two sides of the first connecting groove of the clavicle plate main body, and a gap is reserved between the second connecting block and the side walls of the two sides of the second connecting groove of the acromion steel plate;
the length of the gap between the first connecting block and the side walls of the two sides of the first connecting groove and the gap between the second connecting block and the side walls of the two sides of the second connecting groove are independently 0.5-1 mm. Preferably, the diameter of the pin hole of the first connecting block is larger than that of the first pin shaft, the diameter of the pin hole of the second connecting block is larger than that of the second pin shaft, and preferably, the diameter length of the pin hole is 0.2-0.4 mm longer than that of the first pin shaft or the second pin shaft.
The connecting piece can be made of metal or nonmetal, specifically any one of stainless steel, pure titanium, titanium alloy, PE or PEEK. Preferably, the width of the connecting piece is 6-8 mm, the thickness is 2-4 mm the edge of the connecting piece is equipped with the radius structure.
In another embodiment, the connecting piece comprises a plurality of connecting lines, one ends of the connecting lines are connected to the first pin shaft, the other ends of the connecting lines are connected to the second pin shaft, and the connecting lines can be parallel to each other or can be woven together. The connecting wire may be made of metal or nonmetal, such as stainless steel, pure titanium, titanium alloy, PE or PEEK. The connecting line can also select absorbable material or non-absorbable material according to actual need.
The connecting piece includes the advantage of a plurality of connecting wires to lie in: the connecting piece can adjust the shape and the position according to the anatomical characteristics of the acromioclavicular joint, and is convenient to adjust.
In the use process, the clavicle plate main body and the acromion steel plate are respectively attached to the clavicle and the acromion, then the first connecting block and the second connecting block are respectively inserted into the first connecting groove and the second connecting groove, and then the first connecting block and the second connecting block are inserted into the pin holes of the first connecting block and the second connecting block through the pin shaft, so that the hinging is realized. Because be provided with the clearance between first connecting block and the first spread groove both sides lateral wall, and be equipped with the clearance between second connecting block and the second spread groove both sides lateral wall, not only can realize that the relative round pin axle of connecting piece rotates, can also realize the axle slip along the line, satisfy the fine motion connection demand of acromioclavicular joint department.
Preferably, the length of the gap is 0.6-0.9 mm. More preferably, the length of the gap is 0.8 mm.
Preferably, the diameter length of the pin hole is 0.25-0.35 mm longer than that of the first pin shaft or the second pin shaft. More preferably, the diameter length of the pin hole is 0.3mm longer than the diameter length of the first pin or the second pin.
Preferably, the number of the second screw holes is 5. More preferably, the diameter of the second screw hole is 2.7 mm.
Preferably, the width of the connecting piece is 6.5-7.5 mm, and the thickness of the connecting piece is 2.5-3.5 mm. More preferably, the width of the connecting piece is 7mm, and the thickness is 3 mm.
An acromioclavicular joint internal fixation system comprises the acromioclavicular joint micromover plate, a positioning screw or a positioning pin arranged in a positioning hole, a first locking screw arranged in a first screw hole and a second locking screw arranged in a second screw hole.
EXAMPLE III
An acromioclavicular joint fretting plate comprising:
the clavicle plate main body is fixed on the surface of a clavicle, a connecting piece is fixedly connected to the near end of the clavicle plate main body, and a pin hole is formed in the free end of the connecting piece; a plurality of positioning holes are uniformly distributed at the near end of the clavicle plate main body, and the positioning holes can be Kirschner wire holes. A plurality of first screw holes are uniformly distributed in the middle and the far end of the bone plate main body. The locating hole is used for settling a plurality of locating nails or locating needles, plays the role of temporarily fixing or fixing the fractured ossicle of the articular surface, and the first screw hole is used for settling a locking screw, thereby providing stronger fixing effect. The first screw hole may be a conventional threaded hole, a compound locking hole or a universal locking hole. Preferably, the clavicle plate body has a plurality of arc notches at its edge. The arc-shaped notch is used for increasing the plasticity of the clavicle plate main body in the operation and changing the radian of the clavicle plate main body, so that the clavicle plate main body can be more attached to bones of different people. Simultaneously, the setting of a plurality of arc breachs can also reduce the oppression of clavicle plate main part to the clavicle, reduces the influence of clavicle plate main part to blood circulation.
The acromion steel plate is fixed at the acromion and is approximately circular, and the edge of the acromion steel plate is provided with a rounding structure. One end of the acromion steel plate, which is close to the clavicle plate main body, is provided with a connecting groove, a pin shaft is arranged in the connecting groove, and the connecting block is inserted into the connecting groove; preferably, a plurality of second screw holes for fixing shoulder fragments are uniformly distributed on the acromion steel plate.
Preferably, the connecting member is made of any one of stainless steel, pure titanium, titanium alloy, PE or PEEK. As further preferred, the connecting piece is connected with the smooth transition of clavicle plate main part, the width of connecting piece is 6 ~ 8mm, and thickness is 2 ~ 4mm the edge of connecting piece is equipped with the radius structure.
Wherein, a gap is arranged between the connecting block and the side walls at the two sides of the connecting groove. Preferably, the length of the gap is 0.5 to 1 mm. More preferably, the diameter of the pin hole is larger than the diameter of the pin shaft. The diameter length of the pin hole is 0.2-0.4 mm longer than that of the pin shaft.
In the using process, the clavicle plate main body and the acromion plate are respectively attached to the clavicle and the acromion, then the connecting block is inserted into the connecting groove, and then the connecting block is inserted into the pin hole of the connecting block through the pin shaft, so that the hinge joint is realized. Because be equipped with the clearance between connecting block and the spread groove both sides lateral wall, not only can realize the relative round pin axle of connecting piece and rotate, can also realize the axle slip along the line, satisfy the fine motion connection demand of joint department.
Preferably, the length of the gap is 0.6-0.9 mm. More preferably, the length of the gap is 0.8 mm.
Preferably, the diameter length of the pin hole is 0.25-0.35 mm longer than that of the pin shaft. More preferably, the diameter length of the pin hole is 0.3mm longer than the diameter length of the pin shaft.
Preferably, the number of the shoulder screw holes is 5. More preferably, the shoulder screw hole has a diameter of 2.7 mm.
Preferably, the width of the connecting piece is 6.5-7.5 mm, and the thickness of the connecting piece is 2.5-3.5 mm. More preferably, the width of the connecting piece is 7mm, and the thickness is 3 mm.
An acromioclavicular joint internal fixation system comprises the acromioclavicular joint micromover plate, a positioning screw or a positioning pin arranged in a positioning hole, a first locking screw arranged in a first screw hole and a second locking screw arranged in a second screw hole.
In summary, the shoulder joint micromotion plate and the shoulder joint internal fixation system have the following advantages:
because the connecting block and the side walls at the two sides of the connecting groove are provided with gaps, the clavicle plate main body is in micro-motion connection with the acromion steel plate, so that the clavicle and the acromion can be fixed, and the micro-mobility of the acromioclavicular joint is reserved; the requirement of micromotion of the acromioclavicular joint can be met; the diameter of the pin hole is larger than that of the pin shaft, so that the micro-mobility between the clavicle plate main body and the acromion steel plate is further improved; the edges of the shoulder steel plate and the connecting block are provided with the rounding structures, so that stress concentration can be reduced, and the use comfort level is improved; the connecting piece has wide material selection range, can be made of metal or non-metal, can be provided with a plurality of connecting wires, has various connecting forms, can adapt to different requirements, and has wide application range; the proximal section of the clavicle plate main body is provided with a positioning hole, and the middle section and the distal section are provided with the first screw holes, so that the strength of the clavicle plate is ensured.
While embodiments of the invention have been described above, it is not limited to the applications set forth in the description and the embodiments, which are fully applicable in various fields of endeavor to which the invention pertains, and further modifications may readily be made by those skilled in the art, it being understood that the invention is not limited to the details shown and described herein without departing from the general concept defined by the appended claims and their equivalents.
Claims (10)
1. A acromioclavicular joint microplates, comprising:
the clavicle plate main body is used for fixing the clavicle on the clavicle in a fitting manner;
the shoulder peak plate is used for being attached to the shoulder bones to fix the shoulder bones;
the connecting piece is used for connecting the clavicle plate main body and the acromion plate, one end of the connecting piece is connected with the clavicle plate main body to form a first connecting part, and the other end of the connecting piece is connected with the acromion plate to form a second connecting part;
at least one of the first connection portion and the second connection portion includes:
a connecting groove, wherein a pin shaft is arranged; and the combination of (a) and (b),
the connecting block is provided with a pin hole;
the pin shaft can penetrate through the pin hole to connect the connecting block with the connecting groove, and a gap is formed between the connecting block and the side walls of the two sides of the connecting groove after connection.
2. The acromioclavicular joint microplates of claim 1, wherein: the length of the gap is 0.5-1 mm.
3. The acromioclavicular joint microplates of claims 1 or 2, wherein: the diameter of the pin hole is larger than that of the pin shaft.
4. The acromioclavicular joint microplates of any one of claims 1-3, wherein: the diameter length of the pin hole is 0.2-0.4 mm longer than that of the pin shaft.
5. The acromioclavicular joint microplates of any one of claims 1-4, wherein: the near end of the clavicle plate main body is provided with a plurality of positioning holes, and the middle part and the far end of the clavicle plate main body are provided with a plurality of first screw holes.
6. The acromioclavicular joint microplates of any one of claims 1-5, wherein: the clavicle plate main body edge is equipped with a plurality of arc breachs.
7. The acromioclavicular joint microplates of any one of claims 1-6, wherein: the shoulder peak plate is nearly circular, the edge of the shoulder peak plate is provided with a rounding structure, and the shoulder peak plate is provided with a plurality of second screw holes.
8. The acromioclavicular joint microplates of any one of claims 1-7, wherein: the connecting piece is rectangular form, and its width is 6 ~ 8mm, and thickness is 2 ~ 4 mm.
9. The acromioclavicular joint microplates of any one of claims 1-8, wherein: the connecting piece is made of a metal material or a non-metal material;
preferably, the connector comprises a plurality of connecting wires.
10. An acromioclavicular intra-fixation system, wherein the acromioclavicular intra-fixation system comprises the acromioclavicular joint microplates and locking screws of any one of claims 1-9.
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202110971611.0A CN113768600A (en) | 2021-08-24 | 2021-08-24 | Acromioclavicular joint micro-moving plate and acromioclavicular joint internal fixation system |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202110971611.0A CN113768600A (en) | 2021-08-24 | 2021-08-24 | Acromioclavicular joint micro-moving plate and acromioclavicular joint internal fixation system |
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| CN113768600A true CN113768600A (en) | 2021-12-10 |
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| CN202110971611.0A Pending CN113768600A (en) | 2021-08-24 | 2021-08-24 | Acromioclavicular joint micro-moving plate and acromioclavicular joint internal fixation system |
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| CN (1) | CN113768600A (en) |
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- 2021-08-24 CN CN202110971611.0A patent/CN113768600A/en active Pending
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