CN108618838B - Locking and pressurizing bone screw plate system - Google Patents
Locking and pressurizing bone screw plate system Download PDFInfo
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- CN108618838B CN108618838B CN201810402337.3A CN201810402337A CN108618838B CN 108618838 B CN108618838 B CN 108618838B CN 201810402337 A CN201810402337 A CN 201810402337A CN 108618838 B CN108618838 B CN 108618838B
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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
- A61B17/84—Fasteners therefor or fasteners being internal fixation devices
- A61B17/86—Pins or screws or threaded wires; nuts therefor
- A61B17/8605—Heads, i.e. proximal ends projecting from bone
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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
- A61B17/84—Fasteners therefor or fasteners being internal fixation devices
- A61B17/86—Pins or screws or threaded wires; nuts therefor
- A61B17/8625—Shanks, i.e. parts contacting bone tissue
- A61B17/863—Shanks, i.e. parts contacting bone tissue with thread interrupted or changing its form along shank, other than constant taper
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- Orthopedic Medicine & Surgery (AREA)
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Abstract
The invention provides a locking and pressurizing bone screw plate system, which comprises a first fixing part (1) and a second fixing part (2), wherein the first fixing part (1) and the second fixing part (2) are integrally formed, fixedly connected or detachably connected; the first fixing part (1) comprises a main bone plate (101), and a main rod locking hole (110) is formed in the main bone plate (101); the second fixing part (2) comprises a plurality of bone supporting plates (201), and auxiliary nails (202) are fastened on the bone supporting plates (201); the branch bone plate (201) comprises a wavy part (203). The Y-shaped nail plate is adopted, the bone block is fixed at an angle after being implanted, the fixing strength is higher, and the axial stability of the fracture is higher; the main nail and the auxiliary nail are of barb structures, so that knocking implantation is convenient and fast, and the pull-out resistance is higher; the barbed nail has small injury to bone at the metaphysis of the child, needs less bone mass and reduces the interference of internal plants on the healing and development of the metaphysis fracture; the wavy part can also play a role in pressurization by bending, so that the formation of fracture gaps is prevented.
Description
Technical Field
The invention relates to the field of medical instruments, in particular to a locking and pressurizing bone screw plate system.
Background
Metaphysis: the long bones in the skeleton, such as the femur tibia of the lower limb and the ulnar radius of the humerus of the upper limb, are formed by first forming an embryonic form of bone with cartilage before the long bones are formed, then ossifying and hardening, finally forming cartilage at both ends, the cartilage continuing to ossify, and finally forming an epiphyseal line between the cartilage and the bone at both ends of the bone, namely the line between the bone and the cartilage, and the metaphysis is the part.
At present, no bone fracture plate specially designed for children metaphysis fracture exists, the traditional bone fracture plate has large area, is easy to interfere with joint surfaces, has large implanted screw body, has large damage to metaphysis during implantation, and is not beneficial to metaphysis healing and development; and when the screw is fixed, the screw body is large, the screw can split metaphysis sclerotin, so that fracture can not be fixed or bone deformity can be healed.
Disclosure of Invention
In view of the deficiencies in the prior art, it is an object of the present invention to provide a locking pressurized bone plate system.
The locking and pressurizing bone screw plate system provided by the invention comprises a first fixing part and a second fixing part, wherein the first fixing part and the second fixing part are integrally formed, fixedly connected or detachably connected;
the first fixing part comprises a main bone plate, and a main rod locking hole is formed in the main bone plate;
the second fixing part comprises one or more bone supporting plates, and auxiliary nails are fixedly connected to the bone supporting plates; the plurality of branch bone plates are included in the length extending direction or are parallel to each other; the branch bone plate comprises a wave-shaped part;
the auxiliary nail is provided with a barb structure.
Preferably, one or more wire holes are arranged on the main bone plate, and the plurality of wire holes are distributed along the circumferential direction of the main rod locking hole.
Preferably, the barb structure is an orthopedic absorbable material structure.
Preferably, the main bone plate is provided with a rod containing groove;
the second fixing part also comprises an adjusting rod, and the branch bone plate is connected to the adjusting rod; the position adjusting rod is detachably arranged in the rod accommodating groove.
Preferably, the groove wall surface of the rod accommodating groove is provided with a limiting lug, a plurality of limiting lugs are sequentially arranged in the length extension direction of the rod accommodating groove, and a positioning gap is formed between two connected limiting lugs;
the positioning rod comprises a rod body part and a positioning part which are fixedly connected, and the positioning part is matched with the positioning gap.
Preferably, the positioning piece is a memory alloy piece; one or more positioning pieces are arranged on the rod body part;
the positioning piece can be switched between an extension state and a limit state:
in the stretching state, the positioning plate is vertically arranged relative to the rod body; and in the limiting state, the positioning plate is obliquely arranged relative to the rod body part.
Preferably, the positioning member includes a first positioning portion and a second positioning portion;
in the stretching state, the first positioning part and the second positioning part are mutually flush; in the limiting state, an included angle is formed between the first positioning part and the second positioning part;
along the extension direction of the depth of the rod holding groove, an anti-drop clearance is formed between the limiting lug and the bottom surface of the rod holding groove;
the first positioning part is detachably arranged in the positioning gap; the second positioning part is detachably mounted in the anti-falling gap.
Preferably, a cavity is arranged in the positioning rod, and the cavity is communicated with the external space of the positioning rod through a cooling hole;
comprises one or more cavities, the internal spaces of the cavities are communicated with each other, partially communicated or not communicated; in the extending direction along the length of the positioning rod, the cavity reaches the position corresponding to the positioning piece.
Preferably, a water outlet is formed in the positioning element, and the water outlet simultaneously penetrates through the first positioning part and the second positioning part in the length extension direction;
the inner space of the cooling hole, the inner space of the cavity and the inner space of the water outlet hole are communicated in sequence to form a cooling channel.
Preferably, the secondary staple comprises a staple stem portion, the staple stem portion being any one or more of the following structures:
-the cross-sectional shape is circular, and the barb structures are arranged on the outer circumferential surface of the nail shank portion in a circular or arc shape;
-the cross-sectional shape is a polygon, said barb structures being located on one or more of the end faces of the shank portion in the radial direction.
Compared with the prior art, the invention has the following beneficial effects:
1. the Y-shaped nail is adopted, the angle is fixed, the fixing strength is higher, and the axial stability is higher;
2. the auxiliary nail adopts a barb structure, so that knocking implantation is convenient, and the pull-out resistance force is higher after implantation;
3. the invention has small injury to the bone of the metaphysis of the child, needs less bone mass, can effectively solve the fracture of the metaphysis of the child and reduce the interference of the inner plant to the healing and the development of the metaphysis;
4. according to the condition of stable internal fixation of the fracture, the locking screw can be implanted into the locking hole of the main rod so as to increase the stability of the nail plate;
5. the detachable structure between the first fixing part and the second fixing part enables the length of the surgical instrument to be adjusted, and different surgical requirements can be met;
6. the first fixing part and the second fixing part can be relatively fixed under the condition of body temperature by the positioning part made of the memory alloy, and when cooling liquid is injected into the cooling channel, the first fixing part and the second fixing part can be automatically separated, so that the cooling channel is convenient to take out;
7. the setting element that memory alloy made inclines relatively pole body portion from the conversion process of extension state to spacing state, can make the setting element card die in the positioning gap on the one hand, and on the other hand can drive vice nail and draw close towards the locking screw to play the pressurized effect, prevent that the skeleton from producing the fracture clearance at the healing in-process.
8. The wavy part on the branch bone plate can be bent and shaped, and the plate types of various forms can be shaped according to the type of the fracture.
9. The branch bone plate can be folded and bent, and the compression effect is exerted on the metaphysis fracture end in the bending process, so that the formation of fracture gaps is avoided, and the fracture healing is promoted.
10. The invention is provided with the thread passing hole, if the injury of the ligament tendon is accumulated by the metaphysis fracture, the ligament tendon can be bound on the nail plate by sewing through the suture and bypassing the thread passing hole.
Drawings
Other features, objects and advantages of the invention will become more apparent upon reading of the detailed description of non-limiting embodiments with reference to the following drawings:
FIG. 1 is a perspective view of a locking compression bone screw plate system according to the present invention in an embodiment;
FIG. 2 is a structural diagram of a first fixing portion and a second fixing portion of a variation with a positioning element in an extended state;
FIG. 3 is a structural diagram of a first fixing portion and a second fixing portion of a variation in which a positioning element is in a position-limiting state;
FIG. 4 is a schematic view of the cooling passages in an extended state;
FIG. 5 is a schematic view of the cooling channel in a limiting state;
FIG. 6 is a front cross-sectional view of the positioning member in an extended state;
fig. 7 is a front sectional view of the positioning member in a position limiting state.
The figures show that:
Detailed Description
The present invention will be described in detail with reference to specific examples. The following examples will assist those skilled in the art in further understanding the invention, but are not intended to limit the invention in any way. It should be noted that variations and modifications can be made by persons skilled in the art without departing from the spirit of the invention. All falling within the scope of the present invention.
In the description of the present invention, it is to be understood that the terms "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", etc., indicate orientations or positional relationships based on those shown in the drawings, and are only for convenience of description and simplicity of description, but do not indicate or imply that the device or element being referred to must have a particular orientation, be constructed and operated in a particular orientation, and thus, are not to be construed as limiting the present invention.
The invention provides a locking compression bone screw plate system, which comprises a first fixing part 1 and a second fixing part 2, wherein the first fixing part 1 comprises a main bone plate 101, the main bone plate 101 is provided with a main rod locking hole 110, the second fixing part 2 comprises one or more bone supporting plates 201, auxiliary screws 202 are fixedly connected on the bone supporting plates 201, the bone supporting plates 201 form included angles or are mutually parallel in the length extension direction, and the bone supporting plates 201 comprise wavy parts 203. In the embodiment shown in fig. 1, the first fixing portion 1 and the second fixing portion 2 are integrally formed, and two bone supporting plates 201 are provided, so that the overall structure of the present invention is Y-shaped, fixed at an angle, stronger in fixing strength, and higher in axial stability. Each of the branch bone plates 201 is provided with a sub-nail 202, and the sub-nail 202 is located at the end of the branch bone plate 201 in the length direction. In addition, vice nail 202 includes nail pole portion 410, is provided with barb structure 400 on the nail pole portion 410, and in the embodiment, nail pole portion 410 cross sectional shape is the polygon, barb structure 400 is located on one of them or a plurality of terminal surfaces in the radial a plurality of terminal surfaces of nail pole portion 410, through barb structure 400's setting for vice nail 202 can be through strikeing can be implanted in the sclerotin, and is simple and convenient, has sufficient resistance to plucking simultaneously and forces. The wavy part 203 is arranged, so that the bone supporting plate 201 can be bent and shaped, on one hand, various shapes can be molded according to the type of the fracture, on the other hand, after the implantation of the bone supporting plate on an operation part is completed, the bone supporting plate can be bent, the metaphysis fracture end is pressurized in the bending process, the formation of a fracture gap is avoided, and the fracture healing is promoted. Preferably, the cross-sectional shape of the shank portion 410 is circular, and the barb structures 400 are arranged on the outer circumferential surface of the shank portion 410 in a circular or arc shape. Preferably, the main nail is fastened to the main bone plate 101, the shape of the main nail is similar to the shape of the auxiliary nail 202, and the number of the main nail and the auxiliary nail 202 can be adjusted according to the requirement. Preferably, the first fixing portion 1 and the second fixing portion 2 can also be fixedly connected or detachably connected.
In one embodiment, the main bone plate 101 is provided with one or more primary rod locking holes 110, and the primary rod locking holes 110 are disposed through the main bone plate 101 in a thickness direction. The main rod locking hole 110 is a threaded hole, and according to the condition of stable internal fixation of fracture, a locking screw can be implanted into the main rod locking hole 110 so as to increase the fixation stability of the invention. Preferably, the barb structure 400 is an orthopedic resorbable material such as hydroxyapatite, and the like, and when the barb structure 400 is absorbed, the present invention can be easily removed from the bone. One or more thread passing holes 111 are also disposed around the stem locking hole 110, and if the metaphysis fracture accumulates ligamentous tendon damage, the ligamentous tendon can be tied to the main bone plate 101 by suturing with a suture, bypassing the thread passing holes 111. Of course, the wire holes 111 may be distributed at other positions of the main bone plate 101, not limited around the main shaft locking hole 110, and may be provided on the branch bone plate 201.
The structure provided in the embodiment can be selected from different sizes according to the requirements of the operation in practical application. In the variation, the first fixing part 1 and the second fixing part 2 are detachable, so that the size of the locking compression bone screw plate system can be adjusted. As shown in fig. 2 and 3, the main bone plate 101 is provided with a rod receiving groove 120, the second fixing portion 2 further comprises an adjusting rod 210, the branch bone plate 201 is connected to the adjusting rod 210, and the adjusting rod 210 is detachably mounted in the rod receiving groove 120. The wall surface of the rod holding groove 120 is provided with a limiting bump 121, the limiting bumps 121 are sequentially arranged in the length extending direction of the rod holding groove 120, a positioning gap 122 is formed between two adjacent limiting bumps 121, the positioning rod 210 comprises a rod body portion 211 and a positioning piece 212 which are fixedly connected, the positioning piece 212 is matched with the positioning gap 122, namely the positioning piece 212 can be clamped into the positioning gap 122. Since a plurality of positioning gaps 122 may be provided, the overall length of the present invention may be adjusted when the positioning rod is positioned in different positioning gaps 122.
To secure the positioning member 212 in the positioning gap 122, the positioning member 212 is made of a memory alloy, and one or more positioning members 212 are mounted on the shaft portion 211. The positioning member 212 can be switched between an extended state and a limit state: in the extended state, the positioning plate is vertically arranged relative to the rod body part 211; in the limiting state, the positioning plate is obliquely arranged relative to the rod body part 211. In practical application, the design can be as follows: the positioning member 212 is in a stretched state in cold water and is shifted to a position-limiting state when implanted in a human body. The positioning piece 212 can be easily placed into the positioning gap 122 in an extending state, and the positioning piece 212 is in a limiting state and is tightly clamped on wall surfaces of two ends of the positioning gap 122 in the width direction due to the fact that the positioning piece 212 inclines relative to the rod body part 211, in addition, the positioning piece 212 can further drive the rod body part 211 to move, the distance between the locking screw and the auxiliary nail 202 is shortened, the effect of pressurizing two corresponding bones for fracture reduction is achieved, and fracture gaps are prevented from being generated in a healing process.
In order to further ensure the structural stability of the present invention after being implanted into the human body, the positioning member 212 includes a first positioning portion 213 and a second positioning portion 214, and in the extended state, the first positioning portion 213 and the second positioning portion 214 are flush with each other; in the limiting state, an included angle exists between the first positioning portion 213 and the second positioning portion 214. Along the extension direction of the depth of the rod accommodating groove 120, an anti-falling gap 123 exists between the limiting protrusion 121 and the bottom surface of the rod accommodating groove 120, the first positioning portion 213 is detachably mounted in the positioning gap 122, and the second positioning portion 214 is detachably mounted in the anti-falling gap 123, as shown in fig. 4 and 5, in the limiting state, the second positioning portion 214 hooks the bottom of the limiting protrusion 121, so as to prevent the second fixing portion 2 from falling off from the first fixing portion 1 along the thickness direction.
In order to facilitate taking out the bone fracture positioning rod after the fracture part is recovered, a cavity 302 is arranged in the positioning rod 210, the cavity 302 is communicated with the external space of the positioning rod 210 through a cooling hole 301, the cavity comprises one or more cavities 302, the internal spaces of the cavities 302 are communicated with each other, partially communicated or not communicated, and the cavities 302 reach the position corresponding to the positioning piece 212 in the length extending direction of the positioning rod 210. That is, the positioning member 212 can be cooled by injecting a cooling fluid, such as cold saline, into the cooling hole 301, so that the positioning member 212 is changed from the limiting state to the extended state again, the locking of the positioning member 212 with respect to the main bone plate 101 is released, and the first fixing portion 1 and the second fixing portion 2 can be conveniently detached. Furthermore, a water outlet 303 is disposed in the positioning member 212, the water outlet 303 simultaneously penetrates through the first positioning portion 213 and the second positioning portion 214 in the length extending direction, and the internal space of the cooling hole 301, the internal space of the cavity 302, and the internal space of the water outlet 303 are sequentially communicated to form a cooling channel. The coolant liquid directly arrives inside the setting element 212 after pouring into to make the coolant liquid constantly supply the cooling, improve cooling efficiency, in addition, the position of the drill way of apopore 303 is along with the rotation of second location portion 214 constantly directional tank bottom surface of holding the pole groove 120, as shown in fig. 6, 7, when the drill way of apopore 303 supports on the tank bottom surface, continue to pour into the coolant liquid into from cooling hole 301, cooling channel internal pressure increases, until can be automatic ejecting positioning rod 210 from the stem groove 120, both played the warning effect that the cooling was in place, can omit the instrument that is used for tilting positioning rod 210 again, and is simple and convenient.
The foregoing description of specific embodiments of the present invention has been presented. It is to be understood that the present invention is not limited to the specific embodiments described above, and that various changes and modifications may be made by one skilled in the art within the scope of the appended claims without departing from the spirit of the invention. The embodiments and features of the embodiments of the present application may be combined with each other arbitrarily without conflict.
Claims (4)
1. A locking and pressurizing bone screw plate system is characterized by comprising a first fixing part (1) and a second fixing part (2), wherein the first fixing part (1) and the second fixing part (2) are detachably connected;
the first fixing part (1) comprises a main bone plate (101), and a main rod locking hole (110) is formed in the main bone plate (101); the second fixing part (2) comprises one or more branch bone plates (201), and auxiliary nails (202) are fixedly connected to the branch bone plates (201); the plurality of branch bone plates (201) are inclined or parallel to each other in the length extending direction; the branch bone plate (201) comprises a wavy part (203);
the auxiliary nail (202) is provided with a barb structure (400);
the main bone plate (101) is provided with a rod containing groove (120);
the second fixing part (2) also comprises an adjusting rod (210), and the bone supporting plate (201) is connected to the adjusting rod (210); the positioning rod (210) is detachably arranged in the rod containing groove (120);
the wall surface of the rod accommodating groove (120) is provided with a limiting lug (121), a plurality of limiting lugs (121) are sequentially arranged in the length extending direction of the rod accommodating groove (120), and a positioning gap (122) is formed between two connected limiting lugs (121);
the positioning rod (210) comprises a rod body part (211) and a positioning part (212) which are connected in a fastening manner, and the positioning part (212) is matched with the positioning gap (122);
the positioning piece (212) is a memory alloy piece; one or more positioning members (212) are mounted on the shaft portion (211);
the positioning piece (212) can be switched between an extension state and a limiting state:
in the stretching state, the positioning plate is vertically arranged relative to the rod body part (211); in the limiting state, the positioning plate is obliquely arranged relative to the rod body part (211);
the positioning member (212) comprises a first positioning part (213) and a second positioning part (214);
in the extended state, the first positioning part (213) and the second positioning part (214) are flush with each other; in the limiting state, an included angle is formed between the first positioning part (213) and the second positioning part (214);
along the depth extension direction of the rod containing groove (120), an anti-drop clearance (123) is formed between the limiting lug (121) and the groove bottom surface of the rod containing groove (120);
the first positioning part (213) is detachably arranged in the positioning gap (122); the second positioning part (214) is detachably arranged in the anti-falling gap (123);
a cavity (302) is arranged in the positioning rod (210), and the cavity (302) is communicated with the external space of the positioning rod (210) through a cooling hole (301);
comprises one or more cavities (302), and the inner spaces of the cavities (302) are communicated with each other, partially communicated or not communicated; in the extending direction along the length of the positioning rod (210), the cavity (302) reaches the position corresponding to the positioning piece (212);
a water outlet hole (303) is formed in the positioning part (212), and the water outlet hole (303) simultaneously penetrates through the first positioning part (213) and the second positioning part (214) in the length extension direction;
the inner space of the cooling hole (301), the inner space of the cavity (302) and the inner space of the water outlet hole (303) are communicated in sequence to form a cooling channel.
2. The locking pressurized bone screw plate system according to claim 1, wherein said main bone plate (101) is provided with one or more wire holes (111), and wherein the plurality of wire holes (111) are circumferentially distributed along the main rod locking hole (110).
3. The locking pressurized bone plate system according to claim 1, wherein said barb structure (400) is an orthopedic resorbable material structure.
4. The locking pressurized bone plate system according to claim 1, wherein said secondary staple (202) comprises a staple stem portion (410), said staple stem portion (410) being any one or more of:
-the cross-sectional shape is circular, the barb structures (400) being arranged in a circular or arc shape on the outer circumferential surface of the shank portion (410);
-the cross-sectional shape is polygonal, the barb structures (400) being located on one or more of the plurality of end surfaces in the radial direction of the shank portion (410).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810402337.3A CN108618838B (en) | 2018-04-28 | 2018-04-28 | Locking and pressurizing bone screw plate system |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810402337.3A CN108618838B (en) | 2018-04-28 | 2018-04-28 | Locking and pressurizing bone screw plate system |
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| Publication Number | Publication Date |
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| CN108618838A CN108618838A (en) | 2018-10-09 |
| CN108618838B true CN108618838B (en) | 2020-08-18 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN201810402337.3A Active CN108618838B (en) | 2018-04-28 | 2018-04-28 | Locking and pressurizing bone screw plate system |
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Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN109259845A (en) * | 2018-10-16 | 2019-01-25 | 创辉医疗器械江苏有限公司 | A kind of the dynamic lock screw and its processing method of annular empty avoiding |
Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN203493723U (en) * | 2013-10-15 | 2014-03-26 | 蔡水奇 | Locking and pressurizing bone fracture plate for rear side of far end of humerus |
| CN204072298U (en) * | 2014-06-27 | 2015-01-07 | 张铁山 | Dissection bone plate for locking on rear side of distal humerus |
| CN104825217A (en) * | 2015-05-27 | 2015-08-12 | 熊静 | Double-nail-hook metaphysis pressurizing fixing device |
-
2018
- 2018-04-28 CN CN201810402337.3A patent/CN108618838B/en active Active
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN203493723U (en) * | 2013-10-15 | 2014-03-26 | 蔡水奇 | Locking and pressurizing bone fracture plate for rear side of far end of humerus |
| CN204072298U (en) * | 2014-06-27 | 2015-01-07 | 张铁山 | Dissection bone plate for locking on rear side of distal humerus |
| CN104825217A (en) * | 2015-05-27 | 2015-08-12 | 熊静 | Double-nail-hook metaphysis pressurizing fixing device |
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| CN108618838A (en) | 2018-10-09 |
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