CN217510585U - Fixed angle positioning type locking screw - Google Patents
Fixed angle positioning type locking screw Download PDFInfo
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- CN217510585U CN217510585U CN202121406010.7U CN202121406010U CN217510585U CN 217510585 U CN217510585 U CN 217510585U CN 202121406010 U CN202121406010 U CN 202121406010U CN 217510585 U CN217510585 U CN 217510585U
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Abstract
The utility model discloses a fixed angle positioning type locking screw, which is characterized by comprising a screw body, wherein the screw body comprises a rod body part and a positioning part; the rod body part is a cylinder, one end of the rod body part is a spherical surface, the other end of the rod body part is connected with the positioning part, the positioning part is a circular truncated cone, and a first inclined surface is arranged between the side surface and the bottom surface of the circular truncated cone; the first inclined plane is provided with a first screw hole penetrating through the circular truncated cone, and an internal thread is arranged in the first screw hole; the first screw hole is provided with a positioning guide hole along the axial direction of the screw body; the rod body part is provided with a second screw hole, and the second screw hole is intersected with the axis of the screw body and the plane where the axis of the first screw hole is located. The beneficial effects of the utility model are that simple structure, the fracture position is implanted to the slant, can realize the three-dimensional fixed at fracture position with two bone screw cooperations, prevents rotating effectually, and the implantation mode is easily operated, reduces the operation time, and patient's recovered cycle is short.
Description
Technical Field
The utility model belongs to the technical field of orthopedics medical instrument, especially, relate to a fixed angle location type locking screw.
Background
Fracture refers to the interruption of the integrity or continuity of bones, which is usually caused by various violent injuries and also caused by bone diseases. The fracture can occur in one part, and can also be generalized. Generally, most patients can partially or completely recover the function of the limbs after timely and proper treatment, and few patients with serious injury, timely and proper treatment failure or complications can have dysfunction or disability of different degrees. The fracture fixation method mainly includes two major types of external fixation and internal fixation. 1. External fixation: it is mainly used for maintaining reduction after reduction by fracture manipulation, for example, it can be used for external fixation when internal fixation is not strong enough after reduction by incision. The commonly used external fixation methods include plaster bandage, small splint, traction, external fixation and brace fixation. 2. Internal fixation: it refers to a method for fixing an incisively reduced fracture at a proper position by an internal fixation device of metal or degradable material. Clinically, according to the actual needs of fracture fixation, different kinds of internal fixation devices can be selected, and the common internal fixation devices comprise various bone fracture steel plates, screws, intramedullary pins, bone round pins (Steiner pins, Kirschner pins and the like), stainless steel wires, degradable material products and the like. The main purpose of internal fixation is to obtain a complete restoration of the affected limb function as quickly as possible. The defect is that the internal fixation orthopedic medical instrument disclosed by the prior art cannot completely meet the use requirement of a patient.
SUMMERY OF THE UTILITY MODEL
1. Technical problem to be solved
The problem to the internal fixation of fracture for orthopedic medical instrument who discloses among the prior art can not satisfy patient user demand completely, the utility model aims to provide a fixed angle location type locking screw, simple structure, the fracture position is implanted to the slant, can realize the three-dimensional fixed at fracture position with two bone screw cooperations, prevents to revolve effectually, and the implantation mode is easily operated, reduces the operating time, and patient's recovery cycle is short.
2. Technical scheme
In order to achieve the above purpose, the technical effects are achieved, the utility model adopts the following technical scheme:
a fixed angle positioning type locking screw is characterized by comprising a screw body, wherein the screw body comprises a rod body part and a positioning part; the rod body part is a cylinder, one end of the rod body part is a spherical surface, the other end of the rod body part is connected with a positioning part, the positioning part is a circular truncated cone, and a first inclined surface is arranged between the side surface and the bottom surface of the circular truncated cone; the first inclined surface is provided with a first screw hole penetrating through the circular truncated cone, and an internal thread is arranged in the first screw hole; the first screw hole is axially provided with a positioning guide hole along the screw body; and a second screw hole is arranged on the rod body part, and the second screw hole is intersected with the axis of the screw body and the plane where the axis of the first screw hole is located.
In a specific embodiment of the present invention, the included angle of the contour line of the circular truncated cone is 20 °.
In a specific embodiment of the present invention, the included angle between the first inclined plane and the axis of the screw body is 30 °, and the included angle between the axis of the first screw hole and the axis of the screw body is 60 °.
In a specific embodiment of the present invention, the second screw hole forms a 90 ° included angle with the axis of the screw body and the axis of the first screw hole.
In a specific embodiment of the present invention, the edge of the first screw hole is provided with a first notch along the axis direction of the positioning guide hole, and the first notch is used to avoid the edge from interfering when the aiming frame is connected to the positioning guide hole.
In a specific embodiment of the present invention, the cross section of the internal thread is trapezoidal, two sides of the thread are respectively set as a thread-up side and a thread-off side, and the thread-up side and the thread-off side of two adjacent threads are triangles with an included angle of 60 °.
In a specific embodiment of the present invention, the positioning guiding hole is one of a straight line, an inner triangle, an inner angle square, a cross, a rice, a quincunx, and an inner hexagon.
In a specific embodiment of the present invention, the second screw hole is provided with a round chamfer at the junction of the surface of the rod body.
When the fracture operation treatment is carried out, the first inclined plane is used as one end parallel to the bone of the fracture part of a patient, namely, the rod body part of the screw body forms an included angle of 30 degrees with the bone of the patient, when the screw is implanted, the aiming frame is used for positioning and clamping, the aiming frame is inserted into the positioning guide hole, and the relative position of the aiming frame and the second screw hole is well adjusted; after the bone screw is implanted, the rod body part and the positioning part are respectively positioned in broken bones on two sides of the fracture line, the aiming frame is utilized to screw in the bone screw into the second screw hole, and after the screw is screwed in the second screw, the aiming frame is loosened, and the first screw hole is used to screw in the bone screw. The screw body and the two bone screws form a three-dimensional stable structure to fix fractured bones, so that the rotation of the screw body is avoided, and the problem of broken screws is avoided.
3. Advantageous effects
Compared with the prior art, the beneficial effects of the utility model are that simple structure, the fracture position is implanted to the slant, can realize the three-dimensional fixed at fracture position with two bone screw cooperations, prevents rotating effectually, and the implantation mode is easily operated, reduces the operation time, and patient's recovery cycle is short.
Drawings
In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings used in the embodiments or the technical solutions in the prior art will be briefly described below, and it is obvious that the drawings in the following description are some embodiments of the present invention, and for those skilled in the art, other drawings can be obtained according to these drawings without creative efforts.
Fig. 1 is a schematic view of the front cross-sectional structure of the present invention.
Fig. 2 is a schematic view of the front view structure of the present invention.
Fig. 3 is a schematic top view of the present invention.
Fig. 4 is a schematic bottom view of the present invention.
Fig. 5 is a schematic view of the positioning guiding hole structure of the present invention.
Fig. 6 is a schematic view of the internal thread structure of the present invention.
In the figure: 1-a shaft portion; 2-spherical surface; 3, a circular truncated cone; 4-side; 5-bottom surface; 6-a first bevel; 7-a first screw hole; 8-internal threads; 9-positioning a guide hole; 10-a second screw hole; 11-axis of the screw body; 12-axis of first screw hole; 13-a first notch; 14-upper buckle side edge; 15-tripping side edge.
Detailed Description
The technical solution of the present invention will be described clearly and completely with reference to the accompanying drawings, and obviously, the described embodiments are some, but not all embodiments of the present invention. Based on the embodiments in the utility model, all other embodiments obtained by those skilled in the art without creative efforts belong to the protection scope of the utility model.
In the description of the present invention, it should be noted that the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer", and the like indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings, and are only for convenience of description and simplicity of description, and do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and thus, should not be construed as limiting the present invention.
In the description of the present invention, it is to be noted that, unless otherwise explicitly specified or limited, the terms "mounted", "connected" and "connected" are to be interpreted broadly, e.g. as a fixed connection, a detachable connection or an integral connection; can be mechanically or electrically connected; they may be connected directly or indirectly through intervening media, or they may be interconnected between two elements. The specific meaning of the above terms in the utility model can be understood in specific cases to those of ordinary skill in the art.
As shown in fig. 1 to 6, a fixed angle positioning type locking screw is characterized by comprising a screw body, wherein the screw body comprises a rod body part 1 and a positioning part; the rod body part 1 is a cylinder, one end of the rod body part 1 is provided with a spherical surface 2, the other end of the rod body part is connected with a positioning part, the positioning part is a circular truncated cone 3, and a first inclined surface 6 is arranged between the side surface 4 and the bottom surface 5 of the circular truncated cone 3; the first inclined surface 6 is provided with a first screw hole 7 penetrating through the circular truncated cone 3, and an internal thread 8 is arranged in the first screw hole 7; the first screw hole 7 is axially provided with a positioning guide hole 9 along the screw body; the shank portion 1 is provided with a second screw hole 10, and the second screw hole 10 intersects with a plane where an axis 11 of the screw body and an axis 12 of the first screw hole are located.
The included angle of the contour lines of the circular truncated cones 3 is 20 degrees.
The included angle between the first inclined surface 6 and the axis 11 of the screw body is 30 degrees, and the included angle between the axis 12 of the first screw hole and the axis 11 of the screw body is 60 degrees.
The second screw hole 10 forms an included angle of 90 degrees with the plane where the axis 11 of the screw body and the axis 12 of the first screw hole are located.
The edge of the first screw hole 7 is provided with a first notch 13 along the axial direction of the positioning guide hole 9, and the first notch 13 is used for avoiding the edge from interfering when the aiming frame is connected with the positioning guide hole 9.
The cross section of the internal thread 8 is trapezoidal, the two side edges of the thread are respectively set as a thread-up side edge 14 and a thread-off side edge 15, and the thread-up side edge 14 and the thread-off side edge 15 of two adjacent threads are triangles with an included angle of 60 degrees.
The positioning guide hole 9 is one of a straight line, an inner triangle, an inner angle square, a cross, a rice, a plum blossom shape and an inner hexagon.
The second screw hole 10 is provided with a rounded chamfer at the junction of the surfaces of the shank portion 1.
When the fracture operation treatment is carried out, the first inclined surface 6 is used as one end parallel to the bone of the fracture part of a patient, namely, the rod body part 1 of the screw body forms an included angle of 30 degrees with the bone of the patient, when the screw is implanted, the aiming frame is used for positioning and clamping, the aiming frame is inserted into the positioning guide hole 9, and the relative position of the aiming frame and the second screw hole 10 is well adjusted; after the bone screw is implanted, the rod body part 1 and the positioning part are respectively positioned in broken bones at two sides of a fracture line, the aiming frame is used for screwing the bone screw into the second screw hole 10, and after the screw is screwed into the second screw, the aiming frame is loosened, and the first screw hole 7 is used for screwing the bone screw. The screw body and the two bone screws form a three-dimensional stable structure to fix fractured bones, so that the rotation of the screw body is avoided, and the problem of broken screws is avoided.
It should be noted that, in this document, relational terms such as first and second, and the like are used solely to distinguish one entity or action from another entity or action without necessarily requiring or implying any actual such relationship or order between such entities or actions. Also, the terms "comprises," "comprising," or any other variation thereof, are intended to cover a non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements does not include only those elements but may include other elements not expressly listed or inherent to such process, method, article, or apparatus. Without further limitation, an element defined by the phrase "comprising an … …" does not exclude the presence of other identical elements in a process, method, article, or apparatus that comprises the element.
The previous description of the disclosed embodiments 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 (8)
1. The utility model provides a fixed angle location type locking screw which characterized in that: the screw comprises a screw body, wherein the screw body comprises a rod body part and a positioning part; the positioning part is a round table, and a first inclined plane is arranged between the side surface and the bottom surface of the round table; the first inclined surface is provided with a first screw hole penetrating through the circular truncated cone, and an internal thread is arranged in the first screw hole; the first screw hole is provided with a positioning guide hole along the axial direction of the screw body; and a second screw hole is arranged on the rod body part, and the second screw hole is intersected with the axis of the screw body and the plane where the axis of the first screw hole is located.
2. The fixed angle positioning type locking screw according to claim 1, wherein: the included angle of the contour lines of the circular truncated cones is 20 degrees.
3. The fixed angle positioning type locking screw according to claim 1, wherein: the included angle between the first inclined plane and the axis of the screw body is 30 degrees, and the included angle between the axis of the first screw hole and the axis of the screw body is 60 degrees.
4. The fixed angle positioning type locking screw according to claim 1, wherein: and the second screw hole forms an included angle of 90 degrees with the axis of the screw body and the axis of the first screw hole.
5. The fixed angle positioning type locking screw according to claim 1, wherein: the edge of the first screw hole is provided with a first notch along the axis direction of the positioning guide hole.
6. The fixed angle positioning type locking screw according to claim 1, wherein: the cross section of the internal thread is trapezoidal, two side edges of the thread are respectively arranged as an upper buckling side edge and a tripping side edge, and the upper buckling side edge and the tripping side edge of two adjacent threads are triangles with an included angle of 60 degrees.
7. The fixed angle positioning type locking screw according to claim 1, wherein: the positioning guide hole is one of a straight line, an inner triangle, an inner angle square, a cross, a rice, a plum blossom shape and an inner hexagon.
8. The fixed angle positioning type locking screw according to claim 1, wherein: and a round chamfer is arranged at the joint of the surface of the rod body part of the second screw hole.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202121406010.7U CN217510585U (en) | 2021-06-23 | 2021-06-23 | Fixed angle positioning type locking screw |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202121406010.7U CN217510585U (en) | 2021-06-23 | 2021-06-23 | Fixed angle positioning type locking screw |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN217510585U true CN217510585U (en) | 2022-09-30 |
Family
ID=83367388
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202121406010.7U Active CN217510585U (en) | 2021-06-23 | 2021-06-23 | Fixed angle positioning type locking screw |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN217510585U (en) |
-
2021
- 2021-06-23 CN CN202121406010.7U patent/CN217510585U/en active Active
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