CN118105153A - Primary and secondary bidirectional anti-rotation pressure screw - Google Patents
Primary and secondary bidirectional anti-rotation pressure screw Download PDFInfo
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- CN118105153A CN118105153A CN202410412546.1A CN202410412546A CN118105153A CN 118105153 A CN118105153 A CN 118105153A CN 202410412546 A CN202410412546 A CN 202410412546A CN 118105153 A CN118105153 A CN 118105153A
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- 230000002457 bidirectional effect Effects 0.000 title claims abstract description 11
- 238000007906 compression Methods 0.000 claims abstract description 33
- 230000006835 compression Effects 0.000 claims abstract description 31
- 230000007246 mechanism Effects 0.000 claims abstract description 22
- 230000000670 limiting effect Effects 0.000 claims description 14
- 210000000988 bone and bone Anatomy 0.000 abstract description 31
- 230000006872 improvement Effects 0.000 description 3
- 230000002980 postoperative effect Effects 0.000 description 3
- 238000011084 recovery Methods 0.000 description 3
- 230000000694 effects Effects 0.000 description 2
- 239000007943 implant Substances 0.000 description 2
- 208000010392 Bone Fractures Diseases 0.000 description 1
- 230000006978 adaptation Effects 0.000 description 1
- 238000010009 beating Methods 0.000 description 1
- 230000008859 change Effects 0.000 description 1
- 230000035876 healing Effects 0.000 description 1
- 238000000034 method Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 210000003205 muscle Anatomy 0.000 description 1
- 230000000399 orthopedic effect Effects 0.000 description 1
- 230000000149 penetrating effect Effects 0.000 description 1
- 238000001356 surgical procedure Methods 0.000 description 1
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Abstract
The invention relates to the technical field of bone screws, in particular to a primary-secondary bidirectional anti-rotation pressing screw, which comprises a primary screw and a secondary screw, and further comprises: the female compression ring and the secondary compression ring are respectively movably sleeved on the outer sides of the female screw and the secondary screw; the movable connecting mechanism is arranged between the main pressing ring and the sub-pressing ring; the movable connecting mechanism comprises a first hexagonal groove formed in one side of the mother press ring and a spherical groove formed in one side of the child press ring, and the inner side of the spherical groove is movably connected with a movable ball head. According to the invention, the female compression ring and the sub compression ring are movably connected through the movable connecting mechanism, so that the angle between the female screw and the sub screw can be flexibly adjusted, when the position and the angle deviate when the female screw is driven for the first time, the sub screw can be driven into the bone for the second time with a more accurate angle by taking the female screw as a reference, the two bones are fixed for the second time, and the bone nails are not required to be driven into for the plurality of times, thereby greatly reducing the pain of patients and reducing the operation risk.
Description
Technical Field
The invention relates to the technical field of bone screws, in particular to a primary-secondary bidirectional anti-rotation compression screw.
Background
The bone nail is used as an orthopedic implant for fixing and is usually used for fixing bone fracture or dislocation, and when the bone nail is used, the bone nail is directly screwed into two different bone blocks or fixed bone plates and other implants to fix bones, so that healing of affected parts is promoted.
The bulletin number is: CN107468320a discloses an extruded bone screw, which comprises a tubular main body, the outer surface of the tubular main body is provided with threads, two ends of the tubular main body are respectively provided with a handle end and a tip, the threads extend from the handle end to the tip, the thread pitch is gradually reduced from the handle end to the tip, a through hole penetrating through the tubular main body is formed at the axis of the tubular main body, the handle end protrudes outwards and protrudes with a regular triangle convex surface, and the apex angle of the regular triangle convex surface is arc-shaped.
Based on the above search and in combination with the reality application discovery: the existing bone screws are usually driven into bones to achieve fixation, but in actual operation, it is difficult to ensure that each bone screw can be driven into a specified position of the bone at a precise angle, if the position and angle deviation of the bone screw are too large, the bone screw needs to be driven into the vicinity of the bone screw again, and the later driven bone screw has the probability of deviation, so that the pain of a patient is increased easily, and the operation risk is increased.
Disclosure of Invention
The invention aims to provide a primary-secondary bidirectional anti-rotation pressing screw to solve the problems in the prior art.
The technical scheme of the invention is as follows: primary and secondary two-way anti-rotation compression screw, including female screw and son screw, still include: the female compression ring and the secondary compression ring are respectively movably sleeved on the outer sides of the female screw and the secondary screw; the movable connecting mechanism is arranged between the main pressing ring and the sub-pressing ring; the movable connecting mechanism comprises a first hexagonal groove formed in one side of the mother press ring and a spherical groove formed in one side of the child press ring, the inner side of the spherical groove is movably connected with a movable ball head, one end of the movable ball head is fixed with a first hexagonal prism, the outer side of the first hexagonal prism is matched with the inner side of the first hexagonal groove, and an angle locking mechanism is arranged between the movable ball head and the child press ring.
Preferably, the angle locking mechanism comprises an internal thread sleeve fixed at the position of the movable ball head corresponding to the upper end of the sub-pressing ring and a second hexagonal groove arranged at the position of the internal thread sleeve corresponding to the inner part of the sub-pressing ring, the inner side of the internal thread sleeve is rotationally connected with a compression stud through threads, the lower end of the compression stud is fixedly provided with an extension rod extending to the inner part of the second hexagonal groove, the inner side of the second hexagonal groove is slidingly connected with a second hexagonal prism, and the lower end of the extension rod is rotationally connected with the upper side of the second hexagonal prism.
Preferably, the downside of second hexagonal prism is fixed with anti-skidding clamp plate, the downside of anti-skidding clamp plate is provided with the spherical concave surface with movable bulb looks adaptation.
Preferably, six connection grooves which are arranged circumferentially are formed in one end of the outer side of the first hexagonal prism, elastic connection pieces are elastically connected to one end of the inner side of each connection groove, and limiting grooves are formed in the position, corresponding to each elastic connection piece, of the inner side of the first hexagonal groove.
Preferably, each limit groove is in a fan-shaped structure, each elastic connecting sheet is in an arc-shaped structure, and each elastic connecting sheet is respectively attached to one side of the inner part of each limit groove.
Preferably, the upper ends of the mother press ring and the child press ring are respectively provided with a second counter bore and a first counter bore at the positions of the inner edges.
Preferably, the upper ends of the main screw and the sub screw are respectively provided with an inner hexagonal cylindrical head, and the two inner hexagonal cylindrical heads are respectively matched with the inner sides of the first counter bore and the second counter bore.
The subject matter provided herein by way of improvement over the prior art, has the following improvements and advantages:
The method comprises the following steps: according to the invention, the female compression ring and the sub compression ring are movably connected through the movable connecting mechanism, so that the angle between the female screw and the sub screw can be flexibly adjusted, when the position and the angle deviate when the female screw is driven for the first time, the sub screw can be driven into bones for the second time by taking the female screw as a reference, the two bones are fixed for the second time without beating bone nails for the second time, the pain of a patient can be greatly reduced, the operation risk is reduced, a certain included angle exists between the female screw and the sub screw, an X-shaped structure is formed between the female screw and the sub screw, the stability of the female screw and the sub screw is improved, a certain anti-rotation effect is achieved, the loose of the female screw and the sub screw caused by the limb movement of the patient is avoided, and the risk of the postoperative recovery period is further reduced.
And two,: according to the invention, the movable ball head of the movable connecting mechanism can be fixed through the angle locking mechanism, so that the angle of the first hexagonal prism can be fixed, the angle between the mother press ring and the son press ring is fixed, and then the included angle between the mother screw and the son screw is fixed, when the son screw is driven into a bone, the angle of the son screw can be prevented from changing, the accuracy of the driving angle of the son screw is improved, the probability of the deflection of the son screw is further reduced, and the operation risk is reduced.
Drawings
In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings that are needed in the description of the embodiments or the prior art will be briefly described, and it is obvious that the drawings in the description below are some embodiments of the present invention, and other drawings can be obtained according to the drawings without inventive effort for a person skilled in the art.
FIG. 1 is a schematic perspective view of the assembled state of the present invention;
FIG. 2 is a schematic perspective view of the disassembled state of the present invention;
FIG. 3 is a schematic cross-sectional view of the disassembled state of the present invention;
FIG. 4 is an enlarged schematic view of the structure of FIG. 3B according to the present invention;
FIG. 5 is an enlarged schematic view of the structure of FIG. 3A according to the present invention;
FIG. 6 is a schematic cross-sectional view of the assembled state of the present invention;
Fig. 7 is an enlarged schematic view of the structure of fig. 6C according to the present invention.
Reference numerals:
1. A female screw; 2. a sub-screw; 3. a female compression ring; 4. a sub-press ring; 5. a first counterbore; 6. a second counterbore; 101. a first hexagonal groove; 102. a spherical groove; 103. a movable ball head; 104. a first hexagonal prism; 105. a connection groove; 106. an elastic connecting piece; 107. a limit groove; 201. a second hexagonal groove; 202. an internally threaded sleeve; 203. compressing the stud; 204. an extension rod; 205. a second hexagonal prism; 206. an anti-slip pressure plate.
Detailed Description
The following detailed description of the present invention clearly and fully describes the technical solutions of the embodiments of the present invention, and it is apparent that the described embodiments are only some embodiments of the present invention, but not all embodiments. All other embodiments, which can be made by those skilled in the art based on the embodiments of the invention without making any inventive effort, are intended to be within the scope of the invention.
The invention provides a primary-secondary bidirectional anti-rotation pressing screw through improvement, and the technical scheme of the invention is as follows:
As shown in fig. 1 to 7, an embodiment of the present invention provides a primary-secondary bidirectional rotation-preventing compression screw, including a primary screw 1 and a secondary screw 2, further including: a female compression ring 3 and a male compression ring 4 respectively sleeved on the outer sides of the female screw 1 and the male screw 2 in a movable way; the movable connecting mechanism is arranged between the main pressing ring 3 and the sub pressing ring 4; the movable connecting mechanism comprises a first hexagonal groove 101 formed in one side of the female press ring 3 and a spherical groove 102 formed in one side of the sub press ring 4, a movable ball head 103 is movably connected to the inner side of the spherical groove 102, a first hexagonal prism 104 is fixed to one end of the movable ball head 103, the outer side of the first hexagonal prism 104 is matched with the inner side of the first hexagonal groove 101, and an angle locking mechanism is arranged between the movable ball head 103 and the sub press ring 4.
Further, the angle locking mechanism comprises an internal thread sleeve 202 fixed at the position of the upper end of the sub-compression ring 4 corresponding to the movable ball head 103, and a second hexagonal groove 201 arranged in the sub-compression ring 4 corresponding to the position of the internal thread sleeve 202, wherein the inner side of the internal thread sleeve 202 is connected with a compression stud 203 through thread rotation, the lower end of the compression stud 203 is fixed with an extension rod 204 extending into the second hexagonal groove 201, the inner side of the second hexagonal groove 201 is connected with a second hexagonal prism 205 in a sliding manner, and the lower end of the extension rod 204 is connected with the upper side of the second hexagonal prism 205 in a rotation manner;
through angle locking mechanism, can fix swing joint mechanism's movable bulb 103 to can fix the angle of first hexagonal prism 104, thereby fix the angle between female clamping ring 3 and the son clamping ring 4, and then fix the contained angle between female screw 1 and the son screw 2, when driving into the bone with son screw 2, can avoid the angle of son screw 2 to produce the change, improve the precision that son screw 2 driven into the angle, further reduce the probability that son screw 2 beat, reduced the operation risk.
Further, an anti-slip pressing plate 206 is fixed on the lower side of the second hexagonal prism 205, and a spherical concave surface matched with the movable ball 103 is arranged on the lower side of the anti-slip pressing plate 206;
The spherical concave surface can be fully attached to the outer side of the movable ball head 103, so that the contact area of the spherical concave surface and the movable ball head is increased, the relative sliding between the spherical concave surface and the movable ball head is effectively prevented, the fixing firmness of the movable ball head 103 is improved, and the deviation of the angle during driving of the sub screw 2 is avoided.
Further, six connection grooves 105 which are arranged in a circumferential manner are formed in one end of the outer side of the first hexagonal prism 104, an elastic connection sheet 106 is elastically connected to one end of the inner side of each connection groove 105, and a limit groove 107 is formed in the inner side of the first hexagonal groove 101 at a position corresponding to each elastic connection sheet 106;
Six elastic connection pieces 106 can be respectively clamped on the inner sides of six limiting grooves 107, so that the first hexagonal prism 104 is fixed on the inner side of the first hexagonal groove 101, the sub-pressing ring 4 is movably connected on one side of the female pressing ring 3, the angles between the sub-pressing ring 4 and the female pressing ring 3 can be adjusted, the sub-pressing ring 4 and the female pressing ring 3 can be prevented from falling off, and the angle adjusting precision of the sub-screw 2 and the female screw 1 is improved.
Further, each limiting groove 107 has a fan-shaped structure, each elastic connecting piece 106 has an arc-shaped structure, and each elastic connecting piece 106 is respectively attached to one side of the inner part of each limiting groove 107;
The elastic connecting sheet 106 is fully attached to the inner side of the limiting groove 107, so that relative movement between the elastic connecting sheet and the limiting groove can be prevented, and the first hexagonal prism 104 is prevented from swinging on the inner side of the first hexagonal groove 101, and the influence on the angle between the female screw 1 and the male screw 2 is avoided.
Further, the upper ends of the mother press ring 3 and the child press ring 4 are respectively provided with a second counter bore 6 and a first counter bore 5 at the inner edge position;
the first counter bore 5 and the second counter bore 6 can accommodate two inner hexagonal cylindrical heads at the upper ends of the female screw 1 and the male screw 2, so that the two inner hexagonal cylindrical heads are prevented from protruding outwards, friction to muscles and cortex is avoided, and the risk in postoperative recovery is reduced.
Further, the upper ends of the main screw 1 and the sub screw 2 are respectively provided with an inner hexagonal cylindrical head, and the two inner hexagonal cylindrical heads are respectively matched with the inner sides of the first counter bore 5 and the second counter bore 6;
shaking can be prevented from being generated between the hexagon socket head cap and the first counter bore 5 and the second counter bore 6, so that the rotation loosening of the sub screw 2 and the main screw 1 is avoided.
Working principle: firstly, a female screw 1 penetrates through a female compression ring 3, the female screw 1 is driven into bones, two bones to be fixed are fixed, if the driving position of the female screw 1 deviates, the female screw 1 does not need to be taken out again, a son screw 2 penetrates through the inside of a son compression ring 4, then a first hexagonal prism 104 of a movable connecting mechanism is inserted into the inside of a first hexagonal groove 101, the first hexagonal groove 101 can limit the rotation of the first hexagonal prism 104 due to the fact that the outside of the first hexagonal prism 104 is matched with the inside of the first hexagonal groove 101, the limiting effect is achieved, and when the first hexagonal prism 104 is completely inserted into the inside of the first hexagonal groove 101, six elastic connecting pieces 106 on the outside of the first hexagonal prism 104 extend into the inside of the six limiting grooves 107 respectively under the elastic force, and each elastic connecting piece 106 is in a fan-shaped structure and is respectively attached to one side of the inside of each limiting groove 107, so that the six elastic connecting pieces 106 can be respectively clamped on the inside of the six limiting grooves 107, and accordingly the six elastic connecting pieces 106 can be respectively clamped on the inside of the six limiting grooves 107, and the six elastic connecting pieces 106 are respectively attached to the inside of the first hexagonal groove 101, and the first hexagonal groove 3;
Through universal movable connection cooperation between the movable ball head 103 and the spherical groove 102, the first hexagonal prism 104 can be driven to adjust the angle in the conical space, so that the included angle between the female compression ring 3 and the male compression ring 4 can be adjusted, the position and the angle of the female screw 1 are fixed, the male screw 2 can be driven into the bone again at the correct angle through adjusting the included angle between the male screw 2 and the female screw 1, the two bones are fixed for the second time, the bone nails are not required to be driven into for multiple times, the pain of a patient can be greatly reduced, the operation risk is reduced, a certain included angle exists between the female screw 1 and the male screw 2, an X-shaped structure is formed between the female screw 1 and the male screw 2, the stability of the female screw 1 and the male screw 2 is improved, a certain anti-rotation effect is achieved, the female screw 1 and the male screw 2 are prevented from loosening due to limb movements of the patient, and the risk of a postoperative recovery period is further reduced;
When the angles of the female screw 1 and the male screw 2 are adjusted to a specified angle, the compression stud 203 of the angle locking mechanism is required to be rotated, the extension rod 204 is driven to move towards the inner side of the second hexagonal groove 201 through threads when the compression stud 203 rotates, and because the lower end of the extension rod 204 is rotationally connected with the upper side of the second hexagonal prism 205, when the extension rod 204 moves downwards, the second hexagonal prism 205 is driven to move downwards, the second hexagonal prism 205 drives the anti-slip pressing plate 206 to move downwards, the spherical concave surface matched with the movable ball head 103 is arranged on the lower side of the anti-slip pressing plate 206, the second hexagonal prism 205 drives the anti-slip pressing plate 206 to be tightly pressed on the outer side of the movable ball head 103, so that the movable ball head 103 can be fixed on the inner side of the spherical groove 102, the movable ball head 103 is prevented from moving on the inner side of the spherical groove 102, the angle of the first hexagonal prism 104 can be fixed at the moment, the angle between the female pressing ring 3 and the male screw 4 can be fixed, the angle between the female screw 1 and the male screw 2 can be further fixed, when the male screw 2 is driven into bone, the angle of the male screw 2 can be prevented from changing, the accuracy of the angle of the male screw 2 is improved, the risk of the male screw 2 is further reduced, and the risk of the surgery is reduced.
The previous description is provided to enable any person skilled in the art to make or use the present invention. Various modifications to these embodiments will be readily apparent to those skilled in the art, and the generic principles defined herein may be applied to other embodiments without departing from the spirit or scope of the invention. Thus, the present invention is not intended to be limited to the embodiments shown herein but is to be accorded the widest scope consistent with the principles and novel features disclosed herein.
Claims (7)
1. Primary and secondary two-way anti-rotation compression screw, including female screw (1) and son screw (2), its characterized in that still includes:
a mother press ring (3) and a son press ring (4) which are respectively and movably sleeved on the outer sides of the mother screw (1) and the son screw (2);
the movable connecting mechanism is arranged between the mother press ring (3) and the child press ring (4);
The movable connecting mechanism comprises a first hexagonal groove (101) formed in one side of the mother press ring (3) and a spherical groove (102) formed in one side of the child press ring (4), the inner side of the spherical groove (102) is movably connected with a movable ball head (103), one end of the movable ball head (103) is fixedly provided with a first hexagonal prism (104), the outer side of the first hexagonal prism (104) is matched with the inner side of the first hexagonal groove (101), and an angle locking mechanism is arranged between the movable ball head (103) and the child press ring (4).
2. The primary and secondary bidirectional anti-rotation compression screw according to claim 1, wherein: the angle locking mechanism comprises an inner threaded sleeve (202) fixed at the position of the upper end of the sub-pressing ring (4) corresponding to the movable ball head (103), and a second hexagonal groove (201) arranged at the position of the inner threaded sleeve (202) corresponding to the inner part of the sub-pressing ring (4), a pressing stud (203) is connected to the inner side of the inner threaded sleeve (202) through threaded rotation, an extension rod (204) extending to the inner part of the second hexagonal groove (201) is fixed to the lower end of the pressing stud (203), a second hexagonal prism (205) is connected to the inner side of the second hexagonal groove (201) in a sliding mode, and the lower end of the extension rod (204) is connected to the upper side of the second hexagonal prism (205) through rotation.
3. The primary and secondary bidirectional anti-rotation compression screw according to claim 2, wherein: the anti-slip pressing plate (206) is fixed on the lower side of the second hexagonal prism (205), and a spherical concave surface matched with the movable ball head (103) is arranged on the lower side of the anti-slip pressing plate (206).
4. The primary and secondary bidirectional anti-rotation compression screw according to claim 1, wherein: six connecting grooves (105) which are arranged in a circumferential manner are formed in one end of the outer side of the first hexagonal prism (104), elastic connecting pieces (106) are elastically connected to one end of the inner side of each connecting groove (105), and limiting grooves (107) are formed in the positions, corresponding to the elastic connecting pieces (106), of the inner side of the first hexagonal groove (101).
5. The primary and secondary bi-directional anti-rotation compression screw of claim 4, wherein: each limiting groove (107) is of a fan-shaped structure, each elastic connecting sheet (106) is of an arc-shaped structure, and each elastic connecting sheet (106) is respectively attached to one side of the inside of each limiting groove (107).
6. The primary and secondary bidirectional anti-rotation compression screw according to claim 1, wherein: the upper ends of the mother press ring (3) and the child press ring (4) are respectively provided with a second counter bore (6) and a first counter bore (5) at the positions of the inner edges.
7. The primary and secondary bi-directional anti-rotation compression screw of claim 6, wherein: the upper ends of the female screw (1) and the male screw (2) are respectively provided with an inner hexagonal cylindrical head, and the two inner hexagonal cylindrical heads are respectively matched with the inner sides of the first counter bore (5) and the second counter bore (6).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202410412546.1A CN118105153A (en) | 2024-04-08 | 2024-04-08 | Primary and secondary bidirectional anti-rotation pressure screw |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202410412546.1A CN118105153A (en) | 2024-04-08 | 2024-04-08 | Primary and secondary bidirectional anti-rotation pressure screw |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN118105153A true CN118105153A (en) | 2024-05-31 |
Family
ID=91212453
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202410412546.1A Pending CN118105153A (en) | 2024-04-08 | 2024-04-08 | Primary and secondary bidirectional anti-rotation pressure screw |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN118105153A (en) |
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2024
- 2024-04-08 CN CN202410412546.1A patent/CN118105153A/en active Pending
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