CN112220543A - Point contact bridging combination formula internal fixation system - Google Patents
Point contact bridging combination formula internal fixation system Download PDFInfo
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- CN112220543A CN112220543A CN202011122606.4A CN202011122606A CN112220543A CN 112220543 A CN112220543 A CN 112220543A CN 202011122606 A CN202011122606 A CN 202011122606A CN 112220543 A CN112220543 A CN 112220543A
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- fixed block
- screw
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- internal fixation
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- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61B—DIAGNOSIS; SURGERY; IDENTIFICATION
- A61B17/00—Surgical instruments, devices or methods
- 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 or setting implements
- A61B17/68—Internal fixation devices, including fasteners and spinal fixators, even if a part thereof projects from the skin
- A61B17/683—Internal fixation devices, including fasteners and spinal fixators, even if a part thereof projects from the skin comprising bone transfixation elements, e.g. bolt with a distal cooperating element such as a nut
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- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61B—DIAGNOSIS; SURGERY; IDENTIFICATION
- A61B17/00—Surgical instruments, devices or methods
- 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 or setting implements
- 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
-
- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61B—DIAGNOSIS; SURGERY; IDENTIFICATION
- A61B17/00—Surgical instruments, devices or methods
- 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 or setting implements
- A61B17/68—Internal fixation devices, including fasteners and spinal fixators, even if a part thereof projects from the skin
- A61B2017/681—Alignment, compression, or distraction mechanisms
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- Health & Medical Sciences (AREA)
- Orthopedic Medicine & Surgery (AREA)
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- Life Sciences & Earth Sciences (AREA)
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- Engineering & Computer Science (AREA)
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- Animal Behavior & Ethology (AREA)
- General Health & Medical Sciences (AREA)
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- Veterinary Medicine (AREA)
- Surgical Instruments (AREA)
Abstract
A point contact bridging combination formula internal fixation system, includes the system body, the system body comprises connective bar (1), fixed block, screw (5), its characterized in that: the fixed block includes fixed block one (2), fixed block two (3), fixed block three (4), fixed block one (2) are equipped with two first excellent holes of wearing (21) and a screw hole (22), first excellent hole of wearing (21) set up in fixed block one (2) both sides, first excellent hole of wearing (21) is equipped with rectangular shape opening (23) towards the outside, first wear excellent hole (21) respectively establish a triangle-shaped protruding piece (24) from top to bottom, be equipped with connective bar (1) in first excellent hole of wearing (21), connective bar (1) are circular body structure, respectively establish a triangle-shaped breach (11) about connective bar (1), triangle-shaped breach (11) coincide with triangle-shaped protruding piece (24) shape, be equipped with screw (5) in screw hole (22).
Description
Technical Field
The invention belongs to the technical field of orthopedic internal fixation instruments, and relates to a point contact bridging combined internal fixation system which is suitable for limb diaphysis orthopedic and wound fracture internal fixation.
Background
People are difficult to avoid fracture of human bodies caused by accidental injury in life, in order to avoid disabilities and influence normal life, medical science and technology research personnel develop various products suitable for fracture reduction of different parts, at present, internal fixation implants for orthopedics at home and abroad mainly comprise series products such as steel plates, intramedullary nails, straight, pressurized and anatomical bone fracture plates, various self-locking and interlocking intramedullary nails, external fixation brackets and the like, however, the internal fixation devices are not enough, the bone fracture plate product operation needs open reduction and fixation, periosteum is stripped, the problems of stress shielding and stress concentration exist, bone healing is seriously influenced, the intramedullary nail product operation is complicated, once the operation interlocking is not accurate, the operation is difficult to implement, and the external fixation brackets can not be used as terminal fixation devices due to postoperative infection. The existing bridge-connection combined type inner support improves the problems of stress shielding and stress concentration, but the support is integrally clung to the bone surface by the screw, and the huge friction force between the support and the bone surface ensures that the acting force generates conduction without mutual movement between the support and the bone surface during loading, and the conduction damages blood vessels at the fracture part, thereby possibly causing the problems of osteoporosis and the like. There is therefore a need for a point contact bridging modular internal fixation system that protects the vessels within the bone.
Disclosure of Invention
The invention aims to provide a point contact bridging combined type internal fixing system aiming at limb backbone orthopedics and wound fracture internal fixation, aiming at the defects of the traditional product technology, the problems of complex structure, multiple fittings, damage to blood vessels in bones and the like of a common bridging combined type internal fixing system.
The technical scheme adopted by the invention for solving the technical problems is as follows: the utility model provides a point type contact bridging combination formula internal fixation system, includes the system body, the system body comprises connective bar, fixed block, screw, its characterized in that: the fixed block includes fixed block one, fixed block two, fixed block three, fixed block one is equipped with two first excellent holes of wearing and a screw hole, first wearing excellent hole sets up in fixed block one both sides, first wearing excellent hole is equipped with rectangular shape opening towards the outside, respectively establish a triangle-shaped protruding piece about first wearing excellent hole, the downthehole connective bar that is equipped with of first wearing excellent, the connective bar is circular body structure, respectively establish a triangle-shaped breach about the connective bar, the triangle-shaped breach is identical with triangle-shaped protruding piece shape, be equipped with the screw in the screw hole.
Further, a spot contact bridging combined internal fixation system as claimed in claim 1, wherein: the screw comprises a screw head and a screw rod, the screw head is a hexagon socket screw head, a first thread is arranged on the side face of the screw head, the first thread is meshed with an inner thread of the screw hole, a second thread is arranged on the screw rod, a point contact support is arranged on the screw rod and close to the screw head, the point contact support can move up and down on the screw rod through the thread, the point contact support comprises an upper adjusting support and a lower gasket, the gasket is connected with a clamping groove in the bottom of the adjusting support through a clamping head, and scale marks are arranged on the upper portion of the screw rod.
Furthermore, the system body is fixed on the injured diaphysis through screws, a gap is reserved between the system body and the surface of the diaphysis except the screws, and the fixing blocks are distributed on two sides of the fracture.
Further, the width and the height of the second fixing block are the same as those of the first fixing block, the cross section of the second fixing block is arranged to be the same as that of the first fixing block, the length of the second fixing block is two times that of the first fixing block, the second fixing block is provided with two screw holes, the third fixing block is provided with a second rod penetrating hole, the second rod penetrating hole is a closed circular ring without a long-strip-shaped opening, the inner part of the second rod penetrating hole is closed, the third fixing block is provided with a semicircular end, the two connecting rods are arranged, the connecting rods are connected with the first fixing block or the first fixing blocks and the second fixing block in series, and two ends of the.
Furthermore, the bottom of the connecting rod is provided with a plurality of strip-shaped cracks, the cracks are distributed densely in the middle, two sides of the cracks are gradually thinner in the middle, the cracks in the middle are longest, and two sides of the cracks are gradually shortened.
The point contact bridging combined type internal fixing system has the beneficial effects that the point contact bridging combined type internal fixing system adopts point contact fixing, reduces the contact area with the bone surface and the friction, further protects blood vessels at the fracture part, reduces metal abrasion, reduces the infection rate and is beneficial to fracture healing.
Drawings
The invention is further illustrated with reference to the following figures and examples.
FIG. 1 is a schematic structural view of the present invention;
FIG. 2 is a schematic view of the structure of the connecting rod;
FIG. 3 is a schematic view of the structure of the screw;
FIG. 4 is an exploded view of a point contact mount on a screw;
FIG. 5 is a schematic structural diagram of a first fixing block;
FIG. 6 is a schematic structural diagram of a second fixing block;
fig. 7 is a schematic structural view of a third fixing block.
In the figure, 1, a connecting rod, 2, a first fixing block, 3, a second fixing block, 4, a third fixing block, 5, a screw, 6, a backbone, 7, a point-type contact support, 8, a gap, 11, a triangular notch, 12, a crack, 21, a first rod penetrating hole, 22, a screw hole, 23, an opening, 24, a triangular bulge, 25, a second rod penetrating hole, 26, an end, 51, a screw head, 52, a screw rod, 53, a first thread, 54, a second thread, 55, a scale mark, 61, a fracture part, 71, an adjusting support, 72, a gasket, 73, a chuck, 74 and a clamping groove.
Detailed Description
As shown in fig. 1, 2 and 5, a point contact bridging combined internal fixation system comprises a system body, wherein the system body is composed of a connecting rod 1, a fixing block and a screw 5, and is characterized in that: the fixing block comprises a first fixing block 2, a second fixing block 3 and a third fixing block 4, the first fixing block 2 is provided with two first rod penetrating holes 21 and a screw hole 22, the first rod penetrating holes 21 are arranged on two sides of the first fixing block 2, strip-shaped openings 23 are formed in the outwards facing sides of the first rod penetrating holes 21, triangular protruding blocks 24 are respectively arranged on the upper portion and the lower portion of each first rod penetrating hole 21, a connecting rod 1 is arranged in each first rod penetrating hole 21, each connecting rod 1 is of a circular pipe body structure, triangular notches 11 are respectively arranged on the upper portion and the lower portion of each connecting rod 1, the triangular notches 11 are matched with the triangular protruding blocks 24 in shape, screws 5 are arranged in the screw holes 22, the fixing blocks can be connected on the connecting rods 1 in a sliding mode, convenience is achieved, the upper limit and the lower limit are achieved, the connecting rods 1 cannot rotate and slip, and meanwhile the accuracy is improved; the rod penetrating hole is provided with a long strip-shaped opening 23, so that once sliding obstruction occurs, the inspection is convenient.
As shown in fig. 3 and 4, the screw 5 includes a screw head 51 and a screw rod 52, the screw head 51 is a hexagon socket screw head, the side of the screw head 51 is provided with a first thread 53, the first thread 53 is in threaded engagement with the screw hole 22, the screw rod 52 is provided with a second thread 54, the screw rod 52 is provided with a point contact support 7 near the screw head 51, the point contact support 7 can move up and down on the screw rod 52 through the threads, the point contact support 7 includes an upper adjusting support 71 and a lower gasket 72, the gasket 72 is connected with a clamping groove 74 at the bottom of the adjusting support 71 through a clamping head 73, the upper part of the screw rod 52 is provided with a scale mark 55, the scale mark is used for calibrating the distance between the point contact support 7 and the screw head 51, namely adjusting the width of the gap 8, and the provision of the gasket 72 reduces the bone surface friction at the screw head and protects the bone surface blood vessels.
As shown in figure 1, the system body is fixed on an injured diaphysis 6 through screws 5, gaps 8 are left between the system body and the surface of the diaphysis 6 except the screws 5, and the fixing blocks are distributed on two sides of a fracture part 61.
As shown in fig. 6 and 7, the width and height of the second fixing block 3 are the same as those of the first fixing block 2, the cross section of the second fixing block 3 is the same as that of the first fixing block 2, the length of the second fixing block 3 is two times that of the first fixing block 2, the second fixing block 3 is provided with two screw holes 22, a second rod penetrating hole 25 is formed in the third fixing block 4, the second rod penetrating hole 25 is a closed circular ring without a long-strip-shaped opening 23, the inside of the second rod penetrating hole 25 is closed, the third fixing block 4 is provided with a semicircular end 26, the connecting rod 1 is provided with two connecting rods, the connecting rod 1 is connected with one or more first fixing blocks 2 and the second fixing blocks 3 in series, and two ends of the connecting rod 1 are closed.
As shown in fig. 2, a plurality of strip-shaped cracks 12 are arranged at the bottom of the connecting rod 1, the cracks 12 are distributed densely in the middle, two sides are gradually thinner in the middle, the crack 12 in the middle is the longest, and two sides are gradually shortened, in the pressurizing process of the screw 5, the radian of the connecting rod 1 is adjusted by utilizing the openability of the crack 12, so that the radian of the backbone is more fitted, each position of a gap 8 between the system body and the surface of the backbone 6 can be kept consistent, the middle of the connecting rod 1 corresponds to the maximum position of the radian of the backbone, the connecting rod 1 is extruded into a required radian, if the backbone 6 with an outward convex radian is met, the connecting rod 1 is used in an inverted mode, and.
When the connecting rod is used, the connecting rod is placed on the backbone 6, the distance between the point type contact support 7 and the screw head 51 is adjusted, namely the width of the gap 8 is controlled, the corresponding fixing blocks are connected to the connecting rod 1 in series, the fixing block I2 or the fixing block II 3 is configured according to actual conditions and needs, the two ends of the fixing block III are sealed by the fixing block III 4, the middle of the connecting rod 1 corresponds to the position with the maximum backbone radian, the screw 5 is screwed to extrude the connecting rod 1 into the needed radian, if the backbone 6 with the outward convex radian is met, the connecting rod 1 is inverted for use, the same effect can be obtained, the point type contact support 7 on the screw 5 is screwed to the surface of the backbone 6 to stop, and the screw head 51 is not arranged in the screw hole 22 through the first.
The foregoing description is intended to be illustrative rather than limiting, and it will be appreciated by those skilled in the art that many modifications, variations or equivalents may be made without departing from the spirit and scope of the invention as defined in the appended claims.
Claims (5)
1. A point contact bridging combination formula internal fixation system, includes the system body, the system body comprises connective bar (1), fixed block, screw (5), its characterized in that: the fixed block includes fixed block one (2), fixed block two (3), fixed block three (4), fixed block one (2) are equipped with two first excellent holes of wearing (21) and a screw hole (22), first excellent hole of wearing (21) set up in fixed block one (2) both sides, first excellent hole of wearing (21) is equipped with rectangular shape opening (23) towards the outside, first wear excellent hole (21) respectively establish a triangle-shaped protruding piece (24) from top to bottom, be equipped with connective bar (1) in first excellent hole of wearing (21), connective bar (1) are circular body structure, respectively establish a triangle-shaped breach (11) about connective bar (1), triangle-shaped breach (11) coincide with triangle-shaped protruding piece (24) shape, be equipped with screw (5) in screw hole (22).
2. A spot contact bridging combined internal fixation system as claimed in claim 1, wherein: the screw (5) comprises a screw head (51) and a screw rod (52), the screw head (51) is an inner hexagonal screw head, a first thread (53) is arranged on the side face of the screw head (51), the first thread (53) is meshed with an inner thread of the screw hole (22), a second thread (54) is arranged on the screw rod (52), a point type contact support (7) is arranged on the screw rod (52) close to the screw head (51), the point type contact support (7) can move up and down on the screw rod (52) through the threads, the point type contact support (7) comprises an upper adjusting support (71) and a lower gasket (72), the gasket (72) is connected with a clamping groove (74) at the bottom of the adjusting support (71) through a clamping head (73), and a scale mark (55) is arranged at the upper part of the screw rod (52).
3. A spot contact bridging combined internal fixation system as claimed in claim 1, wherein: the system body is fixed on an injured diaphysis (6) through screws (5), a gap (8) is reserved between the system body and the surface of the diaphysis (6) except the screws (5), and the fixing blocks are distributed on two sides of a fracture part (61).
4. A spot contact bridging combined internal fixation system as claimed in claim 1, wherein: fixed block two (3) width and height are the same with fixed block one (2), fixed block two (3) cross section arrange with fixed block one (2) the same, fixed block two (3) length is fixed block one (2) twice, fixed block two (3) are equipped with two screw holes (22), it wears excellent hole (25) to be equipped with the second on fixed block three (4), excellent hole (25) are worn to the second is for not establishing the closed ring of rectangular shape opening (23), excellent hole (25) internal closure is worn to the second, fixed block three (4) are equipped with semi-circular end (26), connecting rod (1) establishes two altogether, connecting rod (1) establishes one or more fixed block one (2) and fixed block two (3) in series, connecting rod (1) both ends are closed by fixed block three (4).
5. A spot contact bridging combined internal fixation system as claimed in claim 1, wherein: the bottom of the connecting rod (1) is provided with a plurality of strip-shaped cracks (12), the cracks (12) are distributed in the middle densely, two sides are gradually dredged in the middle, the cracks (12) in the middle are longest, and two sides are gradually shortened.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202011122606.4A CN112220543A (en) | 2020-10-20 | 2020-10-20 | Point contact bridging combination formula internal fixation system |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202011122606.4A CN112220543A (en) | 2020-10-20 | 2020-10-20 | Point contact bridging combination formula internal fixation system |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN112220543A true CN112220543A (en) | 2021-01-15 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202011122606.4A Pending CN112220543A (en) | 2020-10-20 | 2020-10-20 | Point contact bridging combination formula internal fixation system |
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| CN (1) | CN112220543A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| TWI822497B (en) * | 2022-11-29 | 2023-11-11 | 財團法人金屬工業研究發展中心 | Intramedullary fixation device |
Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US20050065520A1 (en) * | 2002-12-10 | 2005-03-24 | Orbay Jorge L. | Endosteal nail |
| CN204698663U (en) * | 2015-05-18 | 2015-10-14 | 天津市威曼生物材料有限公司 | Locking compress bridge system and Wire/cable contact member inner fixing device |
| CN204931822U (en) * | 2015-05-18 | 2016-01-06 | 天津市威曼生物材料有限公司 | Locking compress bridge joining composite internal fixation system |
| CN204931821U (en) * | 2015-05-15 | 2016-01-06 | 天津市威曼生物材料有限公司 | Bridge joint internal fixation system outside proximal tibia |
| CN107714168A (en) * | 2017-11-03 | 2018-02-23 | 纪玉清 | A kind of double-locking fixed block and double-locking individuation inner fixing device |
| CN214157478U (en) * | 2020-10-20 | 2021-09-10 | 常州市肿瘤医院 | Point contact bridging combination formula internal fixation system |
-
2020
- 2020-10-20 CN CN202011122606.4A patent/CN112220543A/en active Pending
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US20050065520A1 (en) * | 2002-12-10 | 2005-03-24 | Orbay Jorge L. | Endosteal nail |
| CN204931821U (en) * | 2015-05-15 | 2016-01-06 | 天津市威曼生物材料有限公司 | Bridge joint internal fixation system outside proximal tibia |
| CN204698663U (en) * | 2015-05-18 | 2015-10-14 | 天津市威曼生物材料有限公司 | Locking compress bridge system and Wire/cable contact member inner fixing device |
| CN204931822U (en) * | 2015-05-18 | 2016-01-06 | 天津市威曼生物材料有限公司 | Locking compress bridge joining composite internal fixation system |
| CN107714168A (en) * | 2017-11-03 | 2018-02-23 | 纪玉清 | A kind of double-locking fixed block and double-locking individuation inner fixing device |
| CN214157478U (en) * | 2020-10-20 | 2021-09-10 | 常州市肿瘤医院 | Point contact bridging combination formula internal fixation system |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| TWI822497B (en) * | 2022-11-29 | 2023-11-11 | 財團法人金屬工業研究發展中心 | Intramedullary fixation device |
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