Fixing device for orthopedics department
The design of the six-degree-of-freedom parallel adjustable bracket solves the problems of obstruction and trajectory planning in traditional external fixation brackets, achieving a balance between light weight and high rigidity. It is simple to operate and has a good repositioning effect.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2025-03-20
- Publication Date
- 2026-03-27
AI Technical Summary
Traditional external fixation devices have problems such as obstructing the affected area, interfering with trajectory planning, and lacking systematic theoretical guidance for design.
A six-degree-of-freedom parallel adjustment bracket is adopted. Through the mechanical structure design of the static and dynamic platforms and the adjustment bracket, the six-degree-of-freedom position and posture adjustment of the dynamic platform relative to the static platform is realized. Combined with the sliding rod, lead screw and threaded connection, rapid installation and adjustment are achieved.
It solves the problems of affected area obstruction and trajectory planning interference of traditional external fixation brackets, achieves a balance between light weight and high rigidity, is simple to operate, and has a good repositioning effect.
Smart Images
Figure CN224039287U_ABST
Abstract
Description
TECHNICAL FIELD
[0001] The utility model belongs to the technical field of medical apparatus and instruments, especially relates to a orthopedic fixation device. BACKGROUND
[0002] The bone external fixation technology is an effective treatment method for treating bone fracture, bone deformity and other difficult diseases in orthopedics. The bone external fixation technology uses the principle of traction regeneration technology, uses the bone external fixation support, applies pressure to both ends of the injured bone, promotes the healing of the muscle, blood vessels, nerves and other tissues around the wound, and has the advantages of wide application range, high cure rate and few complications.
[0003] The traditional bone external fixation support has the problems of shielding the affected area, interfering with trajectory planning and lacking system theory guidance for design. UTILITY MODEL CONTENT
[0004] The utility model aims at providing a orthopedic fixation device to solve the technical problems in the background art.
[0005] To achieve the above-mentioned purpose, the specific technical scheme of the utility model is as follows: a orthopedic fixation device, including static platform and dynamic platform located above static platform, the edge of static platform and dynamic platform is provided with six convex blocks in circumferential array distribution, and the static platform and dynamic platform are connected through three adjusting supports in circumferential array distribution, the adjusting support includes U-shaped block, the U-shaped block is connected with outer sleeve through hooke joint, the outer sleeve is connected with sliding rod in upper and lower sliding mode, the top of sliding rod is provided with inner sleeve, the top inner cavity of inner sleeve is connected with first lead screw in upper and lower sliding mode, the top of first lead screw is provided with connecting seat, the top of connecting seat is rotatably connected with sliding block through rotating shaft, the sliding block is connected with guide rail in sliding mode, the bottom of guide rail is provided with groove in the length direction, the second lead screw is rotatably connected in the groove through bearing, the top of sliding block extends to the inner cavity of groove and is provided with threaded hole connected with second lead screw in screw mode.
[0006] Preferably, the surface of the static platform and the dynamic platform is provided with a plurality of through holes in circumferential array distribution, and the surface of the convex block is provided with three through holes in ordered distribution.
[0007] Preferably, the bottom of the U-shaped block is fixedly connected between the through hole on the static platform and the screw, the upper surfaces of both ends of the guide rail are provided with studs, the top of the stud extends above the through hole of the convex block on the dynamic platform and is screw-connected with a nut.
[0008] Preferably, the side wall of the outer sleeve is provided with vertically distributed long circular holes, the top end of the long circular hole is open structure, the bottom side wall of the slide rod is provided with a threaded hole, a first locking screw is threadedly connected in the threaded hole, and the nut of the first locking screw is in contact with the surface of the outer sleeve.
[0009] Preferably, the top end of the inner sleeve is rotationally connected with a drive nut, and the drive nut is threadedly connected with the first lead screw.
[0010] Preferably, one end of the second lead screw extends to the outside of the guide rail and is provided with a knob.
[0011] Preferably, the bottom of one end of the guide rail is provided with a threaded block, a second locking screw is threadedly connected in the threaded block, and the end of the second locking screw extends to the recess inner cavity and is in contact with the side wall of the second lead screw.
[0012] The orthopedic fixing device has the following advantages:
[0013] The orthopedic fixing device is simple to operate, convenient to adjust, adopts a six-degree-of-freedom parallel adjusting support and mechanical structure and function design, effectively solves the problems of traditional external fixing support, such as blockage of the affected part and interference of trajectory planning, fundamentally solves the contradiction between light weight and high rigidity, and has good reset effect and smooth operation and adjustment. BRIEF DESCRIPTION OF DRAWINGS
[0014] In order to more clearly illustrate the technical scheme of the embodiments of the present application, the following will briefly introduce the drawings needed to be used in the embodiments, and it should be understood that the following drawings only show some embodiments of the present application, and therefore should not be regarded as a limitation to the scope, and for those skilled in the art, other related drawings can also be obtained without creative labor.
[0015] Fig. 1 It is a schematic diagram of the overall structure of the present application;
[0016] Fig. 2 It is a schematic diagram of the structure of the adjusting support in the present application;
[0017] Fig. 3 It is a schematic diagram of the structure of the guide rail in the present application.
[0018] Marked description: 1, static platform; 2, dynamic platform; 3, bump; 4, adjusting support; 5, through hole; 6, U-shaped block; 7, outer sleeve; 8, slide rod; 9, inner sleeve; 10, oblong hole; 11, threaded hole; 12, first locking screw; 13, drive nut; 14, first lead screw; 15, connecting seat; 16, guide rail; 17, stud; 18, knob; 19, groove; 20, second lead screw; 21, sliding block; 22, threaded block; 23, second locking screw. DETAILED DESCRIPTION
[0019] Hereinafter, only certain exemplary embodiments are simply described. As those skilled in the art can recognize, the described embodiments can be modified in various different ways without departing from the spirit or scope of the embodiments of the present application. Therefore, the drawings and the description are considered to be exemplary in nature rather than limiting.
[0020] In the description of the embodiments of the present application, it is understood that the orientation or positional relationship indicated by the terms "length", "vertical", "horizontal", "top", "bottom" and the like is based on the orientation or positional relationship shown in the drawings, and is only for the convenience of describing the embodiments of the present application and simplifying the description, and therefore cannot be understood as indicating or implying that the indicated device or element must have a particular orientation, be constructed and operated in a particular orientation, and therefore cannot be understood as limiting the embodiments of the present application.
[0021] In addition, the terms "first", "second" are only for descriptive purposes, and cannot be understood as indicating or implying relative importance or implicitly indicating the number of the indicated technical features. Therefore, the features defined with "first", "second" can explicitly or implicitly include one or more of the features. In the description of the embodiments of the present application, the meaning of "multiple" is two or more, unless otherwise specifically limited.
[0022] In the embodiments of the present application, unless otherwise specifically defined and limited, the terms "mounting", "connection", "connection", "fixing" and the like should be broadly understood, for example, it can be fixedly connected, or it can be detachably connected, or it can be integrated; it can be mechanically connected, or it can be electrically connected, or it can be communicated; it can be directly connected, or it can be indirectly connected through an intermediate medium; it can be the communication or interaction relationship between two elements. For those skilled in the art, the specific meaning of the above terms in the embodiments of the present application can be understood according to the specific circumstances.
[0023] The following disclosure provides a number of different implementations or examples for implementing different structures of the embodiments of the present application. In order to simplify the disclosure of the embodiments of the present application, the components and settings of specific examples are described below. Of course, they are only examples and the purpose is not to limit the embodiments of the present application. In addition, the embodiments of the present application can repeatedly refer to numerals and / or reference letters in different examples, and such repetition is for the purpose of simplification and clarity, which itself does not indicate the relationship between the various implementations and / or settings discussed.
[0024] In order to better understand the purpose, structure and function of the present application, the orthopedic fixation device of the present application is further described in detail below in conjunction with the drawings.
[0025] As Figs. 1-3As shown, the utility model discloses a orthopedics fixing device, including static platform 1 and the dynamic platform 2 of static platform 1 top, the edge of static platform 1 and dynamic platform 2 all are provided with six and are circumferentially arrayed distribution's bump 3, and static platform 1 with dynamic platform 2 are connected through three and are circumferentially arrayed distribution's adjusting support 4, adjusting support 4 includes U -shaped block 6, U -shaped block 6 is connected with outer sleeve 7 through hooke joint, outer sleeve 7 is slidably connected with slide rod 8 in inside upper and lower, the lateral wall of outer sleeve 7 is provided with vertical distribution's long circular hole 10, and the top of long circular hole 10 is open -ended structure, and the bottom lateral wall of slide rod 8 is provided with threaded hole 11, and first locking screw 12 is screw connected in threaded hole 11, and the nut of first locking screw 12 contacts with the surface of outer sleeve 7, through the cooperation between slide rod 8 and outer sleeve 7, can make slide rod 8 move up and down in outer sleeve 7, and under the action of first locking screw 12, can lock and fix slide rod 8, and adjusting is simple and fast. The top of slide rod 8 is provided with inner sleeve 9, and the top inner chamber of inner sleeve 9 is slidably connected with first lead screw 14, and the top of inner sleeve 9 is rotatably connected with drive nut 13, and drive nut 13 is screw connected with first lead screw 14, by rotating drive nut 13, because first lead screw 14 is screw connected between drive nut 13, can make first lead screw 14 move up and down in inner sleeve 9. The top of first lead screw 14 is provided with connecting seat 15, and the top of connecting seat 15 is rotatably connected with sliding block 21 through rotating shaft, and sliding block 21 is slidably connected with guide rail 16, and the bottom middle part of guide rail 16 is provided with recess 19 along its length direction, and second lead screw 20 is rotatably connected in recess 19 through bearing, and the top of sliding block 21 extends to the inner chamber of recess 19 and is provided with the threaded hole screw connected with second lead screw 20. One end of second lead screw 20 extends to the outside of guide rail 16 and is provided with knob 18, by rotating knob 18, make second lead screw 20 rotate, to make sliding block 21 can move along the length direction of second lead screw 20. The bottom of one end of guide rail 16 is provided with threaded block 22, and second locking screw 23 is screw connected in threaded block 22, and the end of second locking screw 23 extends to the inner chamber of recess 19 and contacts with the lateral wall of second lead screw 20, by tightening second locking screw 23, make the end of second locking screw 23 and the lateral wall of second lead screw 20 closely contact, can lock and fix second lead screw 20, can effectively prevent the phenomenon of second lead screw 20 loosening from happening.
[0026] The surface of static platform 1 and dynamic platform 2 is provided with multiple circumferentially arrayed distribution's through -hole 5, and the surface of bump 3 is provided with three orderly distributed through -hole 5, to fasten kirsch needle or threaded half needle, reach the purpose of connecting fracture end. The bottom of U -shaped block 6 is fixedly connected between screw and the through -hole 5 on static platform 1, and the upper surface of both ends of guide rail 16 is provided with stud 17, and the top of stud 17 extends to the above of the through -hole 5 of bump 3 on dynamic platform 2 and is screw connected with nut, to realize the connecting and fixing between adjusting support 4 and static platform 1 and dynamic platform 2.
[0027] The working principle of the orthopedic fixing device is as follows: the adjusting support 4 is a six-degree-of-freedom support, so that the movable platform 2 can be adjusted in six degrees of freedom relative to the static platform 1; the static platform and the movable platform have a ring structure; when the support is installed at a patient part, a doctor can rotate the outer sleeve 7 to a suitable position according to the fracture condition of the patient, and the inner and outer sleeves are fixed relative to each other by the first locking screw 12, so that the support can be quickly installed; during the reduction process, the slide rod 8 can be moved according to the adjusting amount to achieve quick adjustment; the first screw rod 14 can be axially moved relative to the inner sleeve 9 by rotating the driving nut 13; the second screw rod 20 is rotated by rotating the knob 18, and the slide block 21 is moved along the guide rail 16; the second locking screw 23 is tightened to limit the rotation of the second screw rod 20, and the transverse movement of the slide block 21 is locked. The six-degree-of-freedom parallel adjusting support 4 and the mechanical structure and function design can effectively solve the problems of the traditional external fixing support, such as the obstruction of the affected part and the interference of the trajectory planning, fundamentally solve the contradiction between the light weight and the high stiffness, and make the reduction effect good and the operation and adjustment smooth.
[0028] It can be understood that the utility model is described through some embodiments, and those skilled in the art know that various changes or equivalent replacements can be made to these features and embodiments without departing from the spirit and scope of the utility model. In addition, these features and embodiments can be modified to adapt to specific conditions and materials under the guidance of the utility model without departing from the spirit and scope of the utility model. Therefore, the utility model is not limited by the specific embodiments disclosed herein, and all embodiments falling within the scope of the claims of the present application belong to the scope protected by the utility model.
Claims
1. An orthopedic fixation device, characterized by: The application relates to a static platform (1) and a dynamic platform (2) arranged above the static platform (1), six convex blocks (3) arranged in a circumferential array are arranged at the edges of the static platform (1) and the dynamic platform (2), and the static platform (1) and the dynamic platform (2) are connected through three adjusting supports (4) arranged in a circumferential array. The adjusting support (4) comprises a U-shaped block (6), the U-shaped block (6) is connected with an outer sleeve (7) through a hooke joint, a sliding rod (8) is slidably connected in the outer sleeve (7), an inner sleeve (9) is arranged at the top end of the sliding rod (8), a first screw rod (14) is slidably connected in the top end inner cavity of the inner sleeve (9), a connecting seat (15) is arranged at the top end of the first screw rod (14), a sliding block (21) is rotatably connected with the connecting seat (15) through a rotating shaft, the sliding block (21) is slidably connected with a guide rail (16), a groove (19) is arranged on the bottom middle part of the guide rail (16) along the length direction of the guide rail (16), a second screw rod (20) is rotatably connected in the groove (19) through a bearing, and the top end of the sliding block (21) extends into the inner cavity of the groove (19) and is provided with a threaded hole which is threadedly connected with the second screw rod (20).
2. An orthopaedic fixation device according to claim 1, wherein: The surfaces of the static platform (1) and the dynamic platform (2) are provided with a plurality of through holes (5) arranged in a circumferential array, and the surface of the convex block (3) is provided with three through holes (5) arranged in order.
3. An orthopaedic fixation device as in claim 2, wherein: The bottom of the U-shaped block (6) is fixedly connected with the through hole (5) on the static platform (1) through a screw, the upper surfaces of the two ends of the guide rail (16) are provided with studs (17), the top ends of the studs (17) extend above the through hole (5) of the convex block (3) on the dynamic platform (2) and are threadedly connected with nuts.
4. The orthopedic fixation device of claim 1, wherein: The side wall of the outer sleeve (7) is provided with vertically distributed long circular holes (10), the top end of the long circular hole (10) is of an open structure, the bottom side wall of the sliding rod (8) is provided with a threaded hole (11), a first locking screw (12) is threadedly connected in the threaded hole (11), and the nut of the first locking screw (12) is in contact with the surface of the outer sleeve (7).
5. An orthopedic fixation device according to Claim 1, wherein: The top end of the inner sleeve (9) is rotatably connected with a driving nut (13), and the driving nut (13) is threadedly connected with the first screw rod (14).
6. An orthopedic fixation device according to Claim 1, wherein: One end of the second screw rod (20) extends to the outside of the guide rail (16) and is provided with a knob (18).
7. An orthopedic fixation device as in claim 1, wherein: The bottom of one end of the guide rail (16) is provided with a threaded block (22), a second locking screw (23) is threadedly connected in the threaded block (22), and the end of the second locking screw (23) extends into the inner cavity of the groove (19) and is in contact with the side wall of the second screw rod (20).