Adjustable supporting device for orthopedic fixing frame
By adopting locking components and auxiliary adjustment components in the adjustable support device of the orthopedic fixation frame, the problem of poor stability of the adjustment rod in the prior art is solved, and a higher therapeutic effect is achieved.
Patent Information
- Application Number
- CN202421089398.6
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-05-20
- Publication Date
- 2025-05-02
- Estimated Expiration
- 2034-05-20
AI Technical Summary
The adjustable connecting rod of the existing orthopedic fixing frame is adjusted by the screw length, which has poor stability, which can easily lead to a shift in the position of the fixing disc and affect the treatment effect.
An adjustable support device for orthopedic fixation frame is designed, using locking assembly and auxiliary adjustment assembly. Through the self-locking function of the locking assembly and the auxiliary function of the auxiliary adjustment assembly, the stability of the adjustment rod during the telescopic process is ensured.
It realizes stability during the expansion and contraction of the adjustment rod, avoids the position of the fixed disc, and improves the treatment effect.
Smart Images
Figure CN222815848U_ABST
Abstract
Description
Technical Field
[0001] The present application relates to the technical field of medical devices, and in particular to an adjustable support device for an orthopedic fixation frame. Background Art
[0002] During orthopedic treatment, bone fragments are usually aligned or realigned and repositioned with the help of a fixator to restore the continuity of the bones and the function of the backbone and ensure the effectiveness of the treatment. If fractured or broken bones heal in a dislocated position, it can cause acquired deformities due to malalignment of the bones and dislocation of bone development.
[0003] Among them, orthopedic fixation frames usually consist of three parts, an upper fixation plate, a lower fixation plate and an adjustable connecting rod. The upper and lower fixation plates are used to fix bone pins to realign and fix the damaged bones. The adjustable connecting rod is used to change the distance between the upper and lower fixation plates to adapt to treatment in different situations.
[0004] In the related art, the adjustable connecting rod is usually adjusted by a screw or telescopically, wherein the adjustable connecting rod whose length is adjusted by a screw is usually fixed by the friction between the threads. This fixing method has poor stability and can easily cause the position of the fixed plates on both sides to shift, thereby affecting the treatment effect. Utility Model Content
[0005] In order to solve or partially solve the problems existing in the related art, the present application provides an adjustable support device for an orthopedic fixation frame, which can self-lock while ensuring the tightening of the adjustment rod through a locking assembly, thereby ensuring the stability when fixing the adjustment rod.
[0006] The present application provides an adjustable supporting device for an orthopedic fixation frame, comprising an outer cylinder, an adjusting knob, an auxiliary adjusting component, a connecting head, a screw, a universal joint, an adjusting rod, and a locking component. A limit rod is arranged in the outer cylinder, and an adjusting knob is rotatably connected to the top of the outer cylinder, the bottom of the adjusting rod is slidably connected to the limit rod, and the adjusting knob is connected to the adjusting rod through a thread, so that when the adjusting knob is rotated, the adjusting rod can be controlled to be extended and retracted; a locking component for fixing the position of the adjusting rod and an auxiliary adjusting component for improving the telescopic stability of the adjusting rod are also installed on the adjusting knob; a connecting head is rotatably installed at the bottom of the outer cylinder, and a screw is hinged on the connecting head; and a universal joint is rotatably connected to the top of the adjusting rod.
[0007] Optionally, in some embodiments, the locking assembly includes a base, a locking block, and a locking cover, the base is fixedly mounted on the top of the adjusting knob, and two locking blocks are symmetrically slidably connected to the base, and an adjustment column is arranged on the top of the locking block; the locking cover is provided with two arc-shaped adjustment grooves, one end of the adjustment groove is close to the center position, and the other end gradually moves away from the center position, the locking cover is rotatably mounted on the base, and the adjustment column is slidably connected in the adjustment groove, so that when the locking cover is rotated, the adjustment column can slide in the adjustment groove, thereby controlling the two locking blocks to approach or move away from each other.
[0008] Optionally, in some embodiments, a second slide groove is provided on the base, a slider is slidably connected in the second slide groove, the bottom of the slider is connected to the base through a second spring, and a clamping block is provided on the side of the slider; a third slide groove is opened on the side wall of the locking cover, and a clamping mouth is provided at both ends of the third slide groove; the clamping block is slidably connected in the third slide groove, and when the clamping block slides to the clamping mouth, the locking cover can be fixed.
[0009] Optionally, in some embodiments, when the block slides to the bayonet at one end, the two locking blocks clamp the adjusting rod to fix the adjusting rod; when the block slides to the bayonet at the other end, the two locking blocks move away from the adjusting rod to facilitate adjustment of the adjusting rod.
[0010] Optionally, in some embodiments, a sleeve is installed on the outside of the locking assembly, and the sleeve is divided into two parts, an upper part and an lower part, by a partition. The lower side of the partition is a locking knob, and the locking knob is sleeved and fixedly connected to the outer side of the locking cover. The upper side of the partition is a guide cylinder, and a first sliding groove is opened on the side wall of the guide cylinder, and an auxiliary adjustment assembly for improving the stability of the adjustment rod is installed in the guide cylinder.
[0011] Optionally, in some embodiments, the auxiliary adjustment component includes a push rod and a first spring. The push rod is slidably connected in the guide cylinder, and the bottom of the push rod is connected to the partition through the first spring. A limiting protrusion is also provided on the side of the push rod, and the limiting protrusion is slidably connected in the first slide groove. After the adjustment rod passes through the push rod, its end is fixedly connected to the universal joint, and the push rod presses the universal joint tightly under the action of elastic force.
[0012] The technical solution provided by this application may have the following beneficial effects:
[0013] The present application can achieve self-locking while tightening the adjusting rod through the locking assembly, thereby ensuring stability when the adjusting rod is fixed; and the locking assembly can be switched between the locking state and the adjusting state through simple rotation, which is convenient for use; the stability of the adjustment process can be improved by the auxiliary adjustment assembly.
[0014] It should be understood that the foregoing general description and the following detailed description are exemplary and explanatory only and are not restrictive of the present application. BRIEF DESCRIPTION OF THE DRAWINGS
[0015] The above and other objects, features and advantages of the present application will become more apparent through a more detailed description of exemplary embodiments of the present application in conjunction with the accompanying drawings, wherein the same reference numerals generally represent the same components in the exemplary embodiments of the present application.
[0016] Figure 1 It is a schematic diagram of the overall structure of this application;
[0017] Figure 2 It is a partial structural cross-sectional view of the present application;
[0018] Figure 3 It is a schematic diagram of the structure of the locking assembly of the present application;
[0019] Figure 4 It is a structural cross-section of the locking assembly of the present application;
[0020] Figure 5 It is a partial structural schematic diagram of the locking assembly of the present application;
[0021] Figure 6 It is a structural schematic diagram of the auxiliary adjustment component of this application.
[0022] Reference numerals:
[0023] 1-outer cylinder, 11-observation port, 12-limiting rod, 2-adjusting knob, 21-threaded hole, 22-annular protrusion;
[0024] 3-sleeve, 31-locking knob, 32-guide cylinder, 33-spacer, 34-first fixing hole, 35-first slide groove;
[0025] 4-auxiliary adjustment component, 41-lift rod, 42-limiting protrusion, 43-first spring;
[0026] 5-connecting head, 6-screw, 7-universal joint, 8-adjusting rod, 81-first limiting groove;
[0027] 9-locking assembly, 91-base, 911-second slide groove, 92-locking block, 921-adjusting column, 922-limiting block, 93-slider, 931-block, 94-second spring, 95-locking cover, 951-adjusting groove, 952-second fixing hole, 953-third slide groove, 954-bayonet, 955-second limiting groove. DETAILED DESCRIPTION
[0028] The embodiments of the present application will be described in more detail below with reference to the accompanying drawings. Although the embodiments of the present application are shown in the accompanying drawings, it should be understood that the present application can be implemented in various forms and should not be limited by the embodiments described herein. On the contrary, these embodiments are provided to make the present application more thorough and complete, and to fully convey the scope of the present application to those skilled in the art.
[0029] It should be understood that although the terms "first", "second", "third", etc. may be used in this application to describe various information, this information should not be limited to these terms. These terms are only used to distinguish the same type of information from each other. For example, without departing from the scope of this application, the first information may also be referred to as the second information, and similarly, the second information may also be referred to as the first information. Thus, the features defined as "first" and "second" may explicitly or implicitly include one or more of the features. In the description of this application, the meaning of "multiple" is two or more, unless otherwise clearly and specifically defined.
[0030] In the description of the present application, it should be understood that the terms "length", "width", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside", etc., indicating the orientation or position relationship, are based on the orientation or position relationship shown in the drawings, and are only for the convenience of describing the present application and simplifying the 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 therefore should not be understood as a limitation on the present application.
[0031] Unless otherwise clearly specified and limited, the terms "installed", "connected", "connected", "fixed" and the like should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection or an indirect connection through an intermediate medium, it can be the internal connection of two elements or the interaction relationship between two elements. For ordinary technicians in this field, the specific meanings of the above terms in this application can be understood according to specific circumstances.
[0032] See also Figure 1-6 An adjustable supporting device for an orthopedic fixation frame includes an outer cylinder 1, an adjusting knob 2, an auxiliary adjusting component 4, a connecting head 5, a screw 6, a universal joint 7, an adjusting rod 8, and a locking component 9. A limiting rod 12 is arranged in the outer cylinder 1. The limiting rod 12 is a square structure. The adjusting rod 8 is cylindrical and has an external thread. A square first limiting groove 81 is opened at the bottom of the adjusting rod 8, and the adjusting rod 8 is slidably connected to the limiting rod 12 through the first limiting groove 81, so that the adjusting rod 8 can only slide up and down but cannot rotate.
[0033] An adjusting knob 2 is rotatably connected to the top of the outer tube 1. Specifically, a ring-shaped protrusion 22 is provided on the outer wall of the outer tube 1, and a groove corresponding to the ring-shaped protrusion 22 is provided on the inner wall of the adjusting knob 2. The adjusting knob 2 is rotatably installed on the ring-shaped protrusion 22 through the groove. A threaded hole 21 is provided at the center of the top of the adjusting knob 2, and the adjusting knob 2 is threadedly connected to the adjusting rod 8 through the threaded hole 21. When the adjusting knob 2 is rotated, the adjusting rod 8 cannot rotate with the action of the limiting rod 12, so that the adjusting rod 8 is extended or shortened to achieve length adjustment. A locking assembly 9 for fixing the position of the adjusting rod 8 and an auxiliary adjusting assembly 4 for improving the telescopic stability of the adjusting rod 8 are also installed on the adjusting knob 2.
[0034] A connector 5 is rotatably mounted at the bottom of the outer tube 1, a screw 6 is hinged on the connector 5, the screw 6 is connected to the fixed plate, and a universal joint 7 is rotatably connected to the top of the adjustment rod 8. The device can be rotated horizontally on the fixed plate through the rotation connection of the connector 5, and can be rotated longitudinally on the fixed plate through the hinge connection of the screw 6 to achieve universal adjustment. With the help of the universal joint 7, the positions of the two fixed plates can be adjusted arbitrarily, so as to facilitate the centering and positioning of damaged bones in different parts.
[0035] An observation port 11 is also provided on the side wall of the outer cylinder 1 , so that the operator can observe the adjustment length of the adjustment rod 8 conveniently.
[0036] See also Figure 3 , 4 The locking assembly 9 includes a base 91, a locking block 92, and a locking cover 95. The base 91 is fixedly mounted on the top of the adjusting knob 2, and two locking blocks 92 are slidably connected to the base 91. The two locking blocks 92 are symmetrical to each other, and the opposite surfaces of the two locking blocks 92 are curved surfaces, and the curvature of the curved surface corresponds to the adjusting rod 8, thereby improving the stability during fixing. An adjusting column 921 is arranged on the top of the locking block 92, see Figure 5 Two arc-shaped adjustment grooves 951 are opened on the locking cover 95, one end of the adjustment groove 951 is close to the center position of the locking cover 95, and the other end gradually moves away from the center position. The locking cover 95 is rotatably installed on the base 91, so that the adjustment column 921 is slidably connected in the adjustment groove 951. When the locking cover 95 is rotated, the adjustment column 921 can slide in the adjustment groove 951. Since the distance between the adjustment groove 951 and the center position of the locking cover 95 is different, when the adjustment column 921 slides, it will gradually approach or move away from the center of the locking cover 95, thereby driving the two locking blocks 92 to approach or move away from each other, thereby fixing or adjusting the adjustment rod 8.
[0037] In order to improve the stability of the locking assembly 9 when locking or adjusting, a self-locking function is also provided on the locking assembly 9, which is specifically implemented as follows: a second sliding groove 911 is provided on the base 91, and a slider 93 is slidably connected in the second sliding groove 911. The bottom of the slider 93 is connected to the base 91 through a second spring 94, and the second spring 94 is always in a compressed state. A clamping block 931 is provided on the side of the slider 93; correspondingly, a third sliding groove 953 is opened on the side wall of the locking cover 95, and both ends of the third sliding groove 953 are provided with a bayonet 954, and the highest point of the bayonet 954 is higher than the top surface of the third sliding groove 953; the clamping block 931 is slidably connected in the third sliding groove 953, and when the clamping block 931 slides to the bayonet 954, it is lifted up under the action of the second spring 94, so that the clamping block 931 is misaligned with the second sliding groove 911, and the clamping block 931 can no longer return to the second sliding groove 911 in a natural state, so as to fix the locking cover 95, thereby fixing the position of the locking block 92. Furthermore, when the operator rotates the locking cover 95, the block 931 is squeezed by the external force, causing the second spring 94 to shorten and the block 931 to return to the third slide groove 953. To ensure the stability of the block 931 during the transition, the third slide groove 953 and the bayonet 954 are connected by an arc surface.
[0038] Furthermore, a limiting block 922 is provided on the locking block 92, and a second limiting groove 955 is opened on the locking cover 95. The thickness of the limiting block 922 is consistent with the width of the second limiting groove 955. When in use, the limiting block 922 is positioned by the second limiting groove 955, which can improve the stability of the locking block 92 when sliding.
[0039] The locking assembly 9 is divided into two states, a locking state and an adjusting state. When the block 931 slides to the bayonet 954 at one end, it is in the locking state. In this state, the adjusting rod 8 is clamped between the two locking blocks 92 to fix the adjusting rod 8; when the block 931 slides to the bayonet 954 at the other end, it is in the adjusting state. At this time, the two locking blocks 92 are away from the adjusting rod 8, and the adjusting rod 8 can be adjusted and retracted.
[0040] See also Figure 6 The sleeve 3 is divided into two parts, an upper part and an lower part, by a partition 33. The lower side of the partition 33 is a locking knob 31, and the locking knob 31 is sleeved and fixedly connected to the outer side of the locking cover 95. The specific method is: a first fixing hole 34 is opened on the partition 33, and a second fixing hole 952 corresponding to the first fixing hole 34 is opened on the locking cover 95. After the two fixing holes are aligned, they are connected by a pin, so that the locking cover 95 can be driven to rotate by rotating the locking knob 31, which is convenient for operation; the upper side of the partition 33 is a guide cylinder 32, and a first sliding groove 35 is opened on the side wall of the guide cylinder 32, and an auxiliary adjustment component 4 for improving the stability of the adjustment rod 8 is installed in the guide cylinder 32.
[0041] The auxiliary adjustment component 4 includes a push rod 41 and a first spring 43. The push rod 41 is slidably connected in the guide cylinder 32, and the bottom of the push rod 41 is connected to the partition 33 through the first spring 43. The first spring 43 is always in a compressed state. A limiting protrusion 42 is also provided on the side of the push rod 41. The limiting protrusion 42 is slidably connected in the first slide groove 35, thereby limiting the stroke of the push rod 41.
[0042] Furthermore, a through hole is formed at the center of the push rod 41, and the size of the through hole is consistent with the diameter of the adjusting rod 8. After the adjusting rod 8 passes through the push rod 41, its end is fixedly connected to the universal joint 7, and the push rod 41 presses against the bottom of the universal joint 7 under the action of elastic force. When in use, the end of the adjusting rod 8 is restricted by the through hole on the push rod 41 to prevent the adjusting rod 8 from tilting during the extension and retraction process, thereby improving the stability of the adjustment process, and one end of the first spring 43 is always pressed against the universal joint 7 through the push rod 41, and the other end presses against the adjusting knob 2 through the sleeve 3, thereby increasing the friction force at the rotation connection between the adjusting knob 2 and the outer cylinder 1. When the operator rotates the adjusting knob 2, this friction force needs to be overcome, thereby improving the accuracy of the adjustment and preventing the operator from over-rotating the adjusting knob 2 due to hand slippage and other reasons.
[0043] Specific working process:
[0044] After the two ends of the device are respectively installed between the upper fixing plate and the lower fixing plate, if the length needs to be adjusted, the adjusting knob 2 and the locking knob 31 are held and rotated at the same time, so that the base 91 and the locking cover 95 rotate at the same time, the distance between the two locking blocks 92 remains unchanged, and the locking mechanism is in the adjustment state. At this time, the adjusting knob 2 drives the adjusting rod 8 to extend or shorten through the thread. After the adjustment is in place, the operator holds the adjusting knob 2 with one hand and rotates the locking knob 31 with the other hand to cause displacement between the base 91 and the locking cover 95, so that the locking block 92 slides along the adjusting groove 951, thereby driving the two locking blocks 92 to approach each other, tightening the adjusting rod 8, and fixing the adjusting rod 8. After the fixing is completed, the clamping block 931 is clamped at the bayonet 954 to fix the locking cover 95, thereby realizing the self-locking of the locking assembly 9.
[0045] Finally, it should be noted that, in this article, relationships such as first and second, etc. are used only to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Moreover, the terms include, include or any other variations are intended to cover non-exclusive inclusion, so that a process, method, article or device that includes a series of elements includes not only those elements, but also other elements not explicitly listed, or also includes elements inherent to such process, method, article or device.
[0046] The embodiments of the present application have been described above, and the above description is exemplary, not exhaustive, and is not limited to the disclosed embodiments. Many modifications and changes will be apparent to those of ordinary skill in the art without departing from the scope and spirit of the described embodiments. The selection of terms used herein is intended to best explain the principles of the embodiments, practical applications, or improvements to the technology in the market, or to enable other persons of ordinary skill in the art to understand the embodiments disclosed herein.
Claims
1. An adjustable support device for an orthopedic fixation frame, characterized in that: The adjustable supporting device for the orthopedic fixation frame includes an outer cylinder, an adjusting knob, an auxiliary adjusting component, a connecting head, a screw, a universal joint, an adjusting rod, and a locking component. A limit rod is arranged in the outer cylinder, and an adjusting knob is rotatably connected to the top of the outer cylinder, the bottom of the adjusting rod is slidably connected to the limit rod, and the adjusting knob is connected to the adjusting rod through a thread, so that when the adjusting knob is rotated, the adjusting rod can be controlled to be extended and retracted; the adjusting knob is also equipped with a locking component for fixing the position of the adjusting rod, and an auxiliary adjusting component for improving the telescopic stability of the adjusting rod; a connecting head is rotatably installed at the bottom of the outer cylinder, and a screw is hinged on the connecting head; the top of the adjusting rod is rotatably connected to a universal joint.
2. The adjustable support device for an orthopedic fixation frame according to claim 1, characterized in that: The locking assembly includes a base, a locking block, and a locking cover. The base is fixedly installed on the top of the adjusting knob, and two locking blocks are symmetrically slidably connected to the base, and an adjusting column is arranged on the top of the locking block; the locking cover is provided with two arc-shaped adjusting grooves, one end of the adjusting groove is close to the center position, and the other end gradually moves away from the center position; the locking cover is rotatably installed on the base, and the adjusting column is slidably connected in the adjusting groove, so that when the locking cover is rotated, the adjusting column can slide in the adjusting groove, thereby controlling the two locking blocks to approach or move away from each other.
3. The adjustable support device for an orthopedic fixation frame according to claim 2, characterized in that: The base is provided with a second slide groove, in which a slider is slidably connected, the bottom of the slider is connected to the base through a second spring, and a clamping block is provided on the side of the slider; a third slide groove is opened on the side wall of the locking cover, and both ends of the third slide groove are provided with a clamping mouth; the clamping block is slidably connected in the third slide groove, and when the clamping block slides to the clamping mouth, the locking cover can be fixed.
4. The adjustable support device for an orthopedic fixation frame according to claim 3, characterized in that: When the block slides to the bayonet at one end, the two locking blocks clamp the adjusting rod to fix the adjusting rod; when the block slides to the bayonet at the other end, the two locking blocks are away from the adjusting rod, making it convenient to adjust the adjusting rod.
5. The adjustable support device for an orthopedic fixation frame according to claim 2, characterized in that: A sleeve is installed on the outside of the locking assembly, and the sleeve is divided into an upper and lower part by a partition. The lower side of the partition is a locking knob, and the locking knob is sleeved and fixedly connected to the outer side of the locking cover. The upper side of the partition is a guide cylinder, and a first sliding groove is opened on the side wall of the guide cylinder, and an auxiliary adjustment assembly for improving the stability of the adjustment rod is installed in the guide cylinder.
6. The adjustable support device for an orthopedic fixation frame according to claim 5, characterized in that: The auxiliary adjustment component includes a push rod and a first spring. The push rod is slidably connected in the guide cylinder, and the bottom of the push rod is connected to the partition through the first spring. A limiting protrusion is also provided on the side of the push rod, and the limiting protrusion is slidably connected in the first slide groove. After the adjustment rod passes through the push rod, its end is fixedly connected to the universal joint, and the push rod presses the universal joint tightly under the action of elastic force.