Fastening mechanism and orthopedic splint
By designing the limit groove and fastening mechanism of worm, worm gear and gear set in orthopedic splint, the problem of inconvenience in installation and fixing of orthopedic splints is solved, the stable fixing and self-locking effect of the splint is achieved, and the fixing stability is improved.
Patent Information
- Application Number
- CN202420794740.6
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-04-17
- Publication Date
- 2025-01-14
- Estimated Expiration
- 2034-04-17
AI Technical Summary
When installing and fastening the existing orthopedic splint, it is inconvenient to fix and adjust, resulting in the problem of the splint falling off due to the excessive force of medical staff.
A fastening mechanism is designed, including limiting grooves, slide grooves, limiting blocks, fixed columns, springs, worms, worm gears and gear sets. The limiting block movement path is controlled through limiting grooves, the clamp position is adjusted, and the worms are passed through the limiting grooves. , the worm gear and the gear set form a self-locking structure to ensure that the clamp does not detach from its original position after being fixed.
The fixing stability of the ply plate is increased, avoiding the ply plate from its original position after being fixed, and improving the reliability and convenience of tightening.
Smart Images
Figure CN222341387U_ABST
Abstract
Description
Technical Field
[0001] The utility model relates to the technical field of orthopedic splints, in particular to a fastening mechanism and an orthopedic splint. Background Art
[0002] An orthopedic external fixation splint is a commonly used orthopedic surgical instrument used to fix and stabilize the fracture site and promote fracture healing. It is made of high-strength materials and has good rigidity and stability. An orthopedic external fixation splint usually consists of two main parts: a splint and a fixing device. The splint is the key part used to fix the fracture site. It is usually made of metal or plastic material and has sufficient rigidity and strength. The fixing device is used to fix the splint to the patient's body, usually using a belt with a buckle or screw.
[0003] At present, when installing and fastening orthopedic splints, medical staff need to judge the degree of fastening based on experience, then apply tension to control the splint to fit the outer surface of the human body, and finally fix the belt with buckles or screws. There is a problem that the medical staff does not use enough force, resulting in inadequate clamping and the auxiliary splint falling off, which makes installation and fastening inconvenient. For this reason, we propose a fastening mechanism and an orthopedic splint. Utility Model Content
[0004] In view of the shortcomings of the prior art in which orthopedic splints are fixed by belts equipped with buckles or screws, which are inconvenient to fix and adjust, the utility model provides a fastening mechanism and an orthopedic splint, which have the advantage of performing two-point fixation of the splint to increase the fixation stability of the splint.
[0005] To achieve the above-mentioned purpose, the utility model provides the following technical solutions: a fastening mechanism, including a fixed shell, a limiting groove is provided inside the fixed shell, a sliding groove is provided inside the limiting groove, the limiting groove is internally slidably connected to a limiting block, the outside of the limiting block is fixedly connected to a fixing column, the inside of the fixing column is fixedly connected to a spring, the tail of the spring is fixedly connected to a fixing rod, and the outside of the fixing rod is fixedly connected to a fixing ring.
[0006] Preferably, the limit groove is arranged as an arc structure corresponding to the fixed shell, the limit block is arranged as an arc structure with unequal heights at both ends, the height of the head end structure of the limit groove is greater than the height of its tail end structure, and the limit block is arranged as an arc structure corresponding to the head end structure of the limit groove.
[0007] Preferably, a cylindrical groove is provided inside the fixing column, the spring is fixedly connected to the tail of the cylindrical groove, and the fixing rod is slidably connected to the inside of the cylindrical groove.
[0008] Preferably, the fixing ring is rotatably connected to the outside of the fixed shell, the outside of the fixing ring is fixedly connected to a large gear, the outside of the large gear is meshingly connected to a small gear, the inside of the small gear is fixedly connected to a rotating shaft, the tail of the rotating shaft is fixedly connected to a worm wheel, the outside of the worm wheel is meshingly connected to a worm, and the tail of the worm is fixedly connected to a knob, which can drive the worm to rotate.
[0009] Preferably, the exterior of the fixed shell is fixedly connected to a protective shell, the interior of the protective shell is provided with a mounting groove corresponding to the worm, the worm is rotatably connected to the interior of the mounting groove, and the worm can rotate inside the mounting groove.
[0010] Preferably, the limiting grooves are provided in two groups symmetrically with respect to the fixed shell, one group has two limiting grooves and the two limiting grooves are symmetrically arranged with respect to the fixed shell, and the limiting grooves can limit the moving path of the limiting block.
[0011] An orthopedic splint comprises an upper splint and a lower splint, wherein the upper splint and the lower splint are of equal length, and two groups of limit blocks are provided, wherein one group of limit blocks is fixedly connected to the outside of the upper splint, and the other group of limit blocks is fixedly connected to the outside of the lower splint.
[0012] Beneficial effects:
[0013] 1. The fastening mechanism and orthopedic splint control the moving path of the limit block through the limit groove, so as to adjust the position of the splint through the limit block, so that the splint is fastened to the surface of the human body, thereby increasing the fixation stability of the splint.
[0014] 2. The fastening mechanism and the orthopedic splint form a self-locking structure through the worm, worm wheel and gear set, which is used to lock the position of the splint after the splint is fixed, so as to prevent the splint from being separated from the original position after being fixed, thereby affecting the clamping effect. BRIEF DESCRIPTION OF THE DRAWINGS
[0015] Figure 1 It is a schematic diagram of the structure of the utility model;
[0016] Figure 2 This is a schematic diagram of the cross-sectional structure of the utility model;
[0017] Figure 3 This is a schematic diagram of the worm gear structure of the utility model;
[0018] Figure 4 This is a schematic diagram of the fixed column structure of the utility model.
[0019] In the figure: 1. fixed shell; 2. limit groove; 3. slide groove; 4. limit block; 5. fixed column; 6. spring; 7. fixed rod; 8. fixed ring; 9. large gear; 10. small gear; 11. rotating shaft; 12. worm gear; 13. worm; 14. knob; 15. protective shell; 16. upper splint; 17. lower splint. DETAILED DESCRIPTION
[0020] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.
[0021] Embodiment 1
[0022] See also Figure 1-4 A fastening mechanism includes a fixed shell 1, a limiting groove 2 is provided inside the fixed shell 1, a sliding groove 3 is provided inside the limiting groove 2, a limiting block 4 is slidably connected inside the limiting groove 2, a fixing column 5 is fixedly connected to the outside of the limiting block 4, a spring 6 is fixedly connected to the inside of the fixing column 5, a fixing rod 7 is fixedly connected to the tail of the spring 6, and a fixing ring 8 is fixedly connected to the outside of the fixing rod 7.
[0023] Among them, the limit groove 2 is set to an arc structure corresponding to the fixed shell 1, the limit block 4 is set to an arc structure with unequal heights at both ends, the head end structure height of the limit groove 2 is greater than the height of its own tail end structure, the limit block 4 is set to an arc structure corresponding to the head end structure of the limit groove 2, a cylindrical groove body is opened inside the fixed column 5, the spring 6 is fixedly connected to the tail of the cylindrical groove body, and the fixed rod 7 is slidably connected to the inside of the cylindrical groove body.
[0024] Among them, the fixing ring 8 is rotatably connected to the outside of the fixed shell 1, the outside of the fixing ring 8 is fixedly connected with a large gear 9, the outside of the large gear 9 is meshedly connected with a small gear 10, the inside of the small gear 10 is fixedly connected with a rotating shaft 11, the tail of the rotating shaft 11 is fixedly connected with a worm wheel 12, the outside of the worm wheel 12 is meshedly connected with a worm 13, the tail of the worm 13 is fixedly connected with a knob 14, the knob 14 can drive the worm 13 to rotate, the outside of the fixed shell 1 is fixedly connected with a protective shell 15, the inside of the protective shell 15 is provided with an installation groove corresponding to the worm 13, the worm 13 is rotatably connected to the inside of the installation groove, and the worm 13 can rotate inside the installation groove.
[0025] The limiting grooves 2 are provided in two groups symmetrically with respect to the fixed housing 1 , one group has two limiting grooves 2 and the two limiting grooves 2 are symmetrically provided with respect to the fixed housing 1 . The limiting grooves 2 can limit the moving path of the limiting block 4 .
[0026] Working principle: When the fastening mechanism and orthopedic splint are in use, the knob 14 can be controlled to drive the worm 13 to rotate, thereby driving the worm wheel 12 to rotate, so that the small gear 10 can drive the large gear 9 to rotate, and then drive the fixing ring 8 to rotate outside the fixed shell 1, so that the fixing ring 8 drives the fixing rod 7 to move, the fixing rod 7 drives the fixing column 5 to move, and the fixing column 5 drives the limit block 4 to move. The limit block 4 is restricted by the limit groove 2 and gradually approaches the center position of the fixed shell 1. At the same time, it is supported by the limit groove 2 to prevent the spring 6 from resetting. In this process, the spring 6 can be stretched under force, so that the fixing column 5 can move with the limit block 4, and after the splint moves with the limit block 4, it can fit the surface of the human body, promote fracture healing, and increase the stability of splint fixation.
[0027] Embodiment 2
[0028] See also Figure 1-4 , further on the basis of embodiment 1, an orthopedic splint includes an upper splint 16 and a lower splint 17, the upper splint 16 and the lower splint 17 are of equal length, two groups of limit blocks 4 are provided, one group of limit blocks 4 is fixedly connected to the outside of the upper splint 16, and the other group of limit blocks 4 is fixedly connected to the outside of the lower splint 17, the outside of the fixing ring 8 is fixedly connected to a large gear 9, the outside of the large gear 9 is meshedly connected to a small gear 10, the inside of the small gear 10 is fixedly connected to a rotating shaft 11, the tail of the rotating shaft 11 is fixedly connected to a worm gear 12, the outside of the worm gear 12 is meshedly connected to a worm 13, and the tail of the worm 13 is fixedly connected to a knob 14.
[0029] Working principle: When the fastening mechanism and the orthopedic splint are in use, the position of the splint can be adjusted by controlling the knob 14 to clamp the human body. Similarly, after the splint is fixed, the worm 13 can limit the rotation of the worm wheel 12, and the worm wheel 12 can limit the rotation of the small gear, thereby limiting the rotation of the large gear 9 and the fixing ring 8, thus forming a self-locking structure, which is used to lock the position of the splint after the splint is fixed, thereby preventing the splint from moving away from its original position after being fixed, thereby affecting the clamping effect.
[0030] Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and spirit of the present invention, and that the scope of the present invention is defined by the appended claims and their equivalents.
Claims
1. A fastening mechanism, comprising a fixed housing (1), characterized in that: A limiting groove (2) is provided inside the fixed housing (1), a sliding groove (3) is provided inside the limiting groove (2), the limiting groove (2) is slidably connected to a limiting block (4) inside, a fixing column (5) is fixedly connected to the outside of the limiting block (4), a spring (6) is fixedly connected to the inside of the fixing column (5), a fixing rod (7) is fixedly connected to the tail of the spring (6), and a fixing ring (8) is fixedly connected to the outside of the fixing rod (7).
2. A fastening mechanism according to claim 1, characterized in that: The limiting groove (2) is configured as an arc structure corresponding to the fixed housing (1); the limiting block (4) is configured as an arc structure with unequal heights at both ends; the height of the head end structure of the limiting groove (2) is greater than the height of its tail end structure; and the limiting block (4) is configured as an arc structure corresponding to the head end structure of the limiting groove (2).
3. A fastening mechanism according to claim 1, characterized in that: A cylindrical groove is provided inside the fixing column (5), the spring (6) is fixedly connected to the tail of the cylindrical groove, and the fixing rod (7) is slidably connected to the inside of the cylindrical groove.
4. A fastening mechanism according to claim 1, characterized in that: The fixing ring (8) is rotatably connected to the outside of the fixing housing (1); the outside of the fixing ring (8) is fixedly connected to a large gear (9); the outside of the large gear (9) is meshingly connected to a small gear (10); the inside of the small gear (10) is fixedly connected to a rotating shaft (11); the tail of the rotating shaft (11) is fixedly connected to a worm wheel (12); the outside of the worm wheel (12) is meshingly connected to a worm (13); the tail of the worm (13) is fixedly connected to a knob (14).
5. A fastening mechanism according to claim 4, characterized in that: The exterior of the fixed housing (1) is fixedly connected to a protective housing (15), the interior of the protective housing (15) is provided with a mounting groove corresponding to the worm (13), and the worm (13) is rotatably connected to the interior of the mounting groove.
6. A fastening mechanism according to claim 1, characterized in that: The limiting grooves (2) are arranged in two groups symmetrically with respect to the fixed housing (1), one group having two limiting grooves (2) and the two limiting grooves (2) are arranged symmetrically with respect to the fixed housing (1).
7. An orthopedic splint, comprising the fastening mechanism according to any one of claims 1 to 6, characterized in that: It also includes an upper clamping plate (16) and a lower clamping plate (17), wherein the upper clamping plate (16) and the lower clamping plate (17) are of equal length, and the limit blocks (4) are provided in two groups, wherein one group of limit blocks (4) is fixedly connected to the outside of the upper clamping plate (16), and the other group of limit blocks (4) is fixedly connected to the outside of the lower clamping plate (17).