A combination fracture external fixation support and method of use thereof

Abstract

The application discloses a combined external fixation support for bone fracture and a use method thereof, and belongs to the technical field of medical devices, which comprises end support frames and support group frames, the end support frame comprises a first mounting plate, connecting rods and connecting holes, a plurality of connecting rods are fixedly and uniformly arranged in a circumferential array on the lower side of the first mounting plate, the connecting rods are provided with the connecting holes at equal intervals, the plurality of support group frames are connected through combination assemblies, the connecting rods and the support group frames are connected through the combination assemblies, the support group frames are located between the two first mounting plates, a plurality of bone pin supports for fixing bone pins are arranged on the first mounting plate and the support group frames, the bone pin support comprises a mounting assembly and a locking assembly, the mounting assembly is detachably mounted on the first mounting plate and the support group frame through a screw rod and a nut, and the locking assembly is mounted on the mounting assembly. Through the above mode, the deviation stress generated in the process of locking the bone pin is avoided, the stress is prevented from acting on the bone pin and the fractured bone of the patient, and the pain of the patient is increased.

Description

Technical Field

[0001] This invention relates to the field of medical device technology, specifically to a combined external fixation frame for fractures and its method of use. Background Technology

[0002] Fracture patients need to have their bones fixed during treatment or rehabilitation to prevent misalignment and poor healing. Traditional plaster casts are not breathable, while inserting plates into the fracture site requires surgery, which is complex and has a long recovery period. Therefore, some fracture patients currently use external fixation devices to fix their fractures.

[0003] For example, Chinese patent CN216985097U discloses an external fixation bracket for fractures. The bracket is equipped with a support frame and a bone pin fixation support. The bone pin is inserted into the upper and lower ends of the patient's fracture bone by a bone pin inserter, and the bone pin is fixed by the fixation support.

[0004] However, the upper and lower bone nails of this device are rigidly connected to the same set of support frames through fixed supports. When dealing with fractures with multiple fracture points, the force borne or applied at the upper end is transmitted downwards in stages, which can easily cause the middle fracture to bear greater stress and increase the patient's pain.

[0005] Based on this, the present invention designs a combined fracture external fixation bracket and its usage method to solve the above problems. Summary of the Invention

[0006] In view of the above-mentioned shortcomings of the existing technology, the present invention provides a combined fracture external fixation frame and its usage method.

[0007] To achieve the above objectives, the present invention provides the following technical solution:

[0008] A combined fracture external fixation frame includes two sets of end support frames and multiple support frames;

[0009] The end support frame includes a connecting rod, two first mounting plates, and multiple connecting holes. One end of the two first mounting plates is hinged, and the other end of the first mounting plates is detachably connected by screws and nuts. Multiple sets of mounting holes are evenly spaced in a circumferential array on the first mounting plates. Multiple connecting rods are evenly fixedly mounted in a circumferential array on the lower side of the first mounting plates. Connecting holes are evenly spaced on the connecting rods. Multiple support frames are connected by a combination assembly. The connecting rods and support frames are connected by a combination assembly. The support frames are located between the two sets of first mounting plates. Multiple bone pin supports for fixing bone pins are installed on the first mounting plates and support frames.

[0010] The bone pin support includes a fixing component and a locking component. The fixing component is detachably mounted on the first mounting plate and the support frame by means of screws and nuts, and the locking component is mounted on the fixing component.

[0011] Furthermore, the fixing assembly includes a mounting plate, a support plate, and a sleeve. The mounting plate has mounting holes. The mounting plate is detachably mounted on the first mounting plate and the support assembly through the mounting holes, screws, and nuts. The support plate is fixedly mounted on the upper side of the mounting plate, and the sleeve is fixedly mounted on the upper side of the support plate.

[0012] Furthermore, the fixing component also includes a limiting sleeve, which is fixedly installed at the outer end of the sleeve. The inner diameter of the limiting sleeve is the same as the inner diameter of the sleeve, and the outer diameter of the limiting sleeve is smaller than the outer diameter of the sleeve. The bone needle is slidably connected to the sleeve and the limiting sleeve.

[0013] Furthermore, the locking assembly includes a movable groove, a steel ball, a movable sleeve, a fastening groove, and a locking sleeve. The sleeve has multiple movable grooves arranged in a circumferential array, and the movable grooves contain steel balls. The movable sleeve is slidably connected to the sleeve in a limiting manner. The movable sleeve has a fastening groove on the side near the steel ball. The locking sleeve is slidably connected to the limiting sleeve in a limiting manner. The locking sleeve abuts against the sleeve, and the locking sleeve is threadedly connected to the movable sleeve.

[0014] Furthermore, the fastening groove is designed as a frustum shape, with the outer part larger than the inner part.

[0015] Furthermore, the support frame includes an upper support plate, a lower support plate, support rods, round rods, and an installation assembly. The lower end of the support rod is fixedly installed with a round rod; the upper end of the support rod is fixedly connected to the upper support plate, and the bottom end of the round rod is fixedly connected to the lower support plate; multiple support rods are provided, and the multiple support rods are evenly distributed in a circumferential array; the installation assembly is installed between the upper support plate and the lower support plate.

[0016] Furthermore, the mounting assembly includes an upper connecting rod, a lower connecting rod, and a second mounting plate. One end of the upper and lower connecting rods is hinged to the second mounting plate, and the other end of the upper connecting rod is hinged to the upper support plate. The other end of the lower connecting rod is hinged to the lower support plate. Multiple upper connecting rods are provided, and the multiple upper connecting rods are evenly distributed in a circumferential array. Multiple mounting holes are evenly provided in a circumferential array on the second mounting plate. The mounting plate can be detachably mounted on the second mounting plate through the mounting holes, screws, and nuts. The upper support plate, the lower support plate, and the second mounting plate are all composed of two arc-shaped plates hinged at one end, and the other end of the arc-shaped plates can be detachably connected by nuts and screws.

[0017] Furthermore, the assembly includes an upper rod, a lower groove, a receiving groove, and a locking component. The upper rod is fixedly installed on the upper support plate, and the lower groove is opened on the lower side of the lower support plate. The upper rod and the lower groove are aligned with the support rod. Adjacent upper rods are inserted into the lower groove. The upper rod and the support rod have through receiving grooves on their upper sides, and the receiving grooves are connected to the lower grooves. The receiving grooves are inserted into the connecting rods.

[0018] Furthermore, the locking assembly includes a first locking hole and a second locking hole. The first locking hole is provided on the upper rod and the receiving groove; a plurality of second locking holes are evenly provided on the support rod; the spacing between the second locking holes is consistent with the spacing between the connecting holes.

[0019] To better achieve the objectives of this invention, this invention also provides a method for using a combined external fixation frame for fractures, comprising the following steps:

[0020] Step 1: Based on the patient's fracture condition, assemble the device and select one or more sets of second mounting plates; if one set of second mounting plates is selected, proceed to Step 2; if multiple sets of second mounting plates are selected, proceed to Step 3.

[0021] Step 2: Align the connecting rods on the two sets of first mounting plates with the upper and lower ends of the receiving groove and insert them. Adjust the insertion depth according to the location and length of the patient's fractured bone, and align the connecting hole with the second locking hole. Then, lock the connecting rod and the support rod with the screw and nut. Install the mounting plates on the upper first mounting plate, the second mounting plate, and the lower first mounting plate according to the position to be fixed, and align the sleeve and the limiting sleeve with the position to be fixed. Lock the mounting plates with the nut and screw.

[0022] Step 3: After aligning the adjacent upper rods and lower slots, insert the upper rod into the lower slot. Secure the adjacent upper and lower support plates with nuts and screws to complete the assembly of multiple sets of second mounting plates. Align the connecting rods on the two sets of first mounting plates with the upper and lower ends of the receiving slots and insert them. Adjust the insertion depth according to the location and length of the patient's fractured bone, and align the connecting hole with the second locking hole. Then, lock the connecting rod and support rod with screws and nuts. Install the mounting plates on the upper first mounting plate, the second mounting plate, and the lower first mounting plate according to the position to be fixed. Align the sleeve and the limiting sleeve with the position to be fixed, and lock the mounting plates with nuts and screws.

[0023] Step 4: Place the patient's fractured limb inside the first mounting plate, upper support plate, lower support plate, and second mounting plate. Close the first mounting plate, upper support plate, lower support plate, and second mounting plate and lock them with nuts.

[0024] Step 5: Insert the bone pin into the sleeve and the limiting sleeve. The size of the bone pin is smaller than the sleeve and the limiting sleeve. The bone pin is pre-positioned by the sleeve and the limiting sleeve. Then, the bone pin is driven into the patient's fracture bone by the bone screw driver to fix the fracture bone. After the bone pin is driven in, move the moving sleeve and the locking sleeve so that the locking sleeve is threadedly connected to the moving sleeve. At this time, the fastening groove in the moving sleeve presses the steel ball inward. Multiple steel balls move in the moving groove until the steel ball contacts the bone pin and locks the bone pin.

[0025] Compared with the prior art, the beneficial effects of this invention are as follows:

[0026] According to the patient's fracture condition, the two sets of first mounting plates and support frames are spliced ​​together with connecting rods and assembly components. During this process, the overall height of the first mounting plates and support frames is adjusted according to the fixed position to adapt to different patients and different fracture conditions.

[0027] The fractured limb was then reduced and placed between the first mounting plate and the support frame to align the broken bones. The first mounting plate and support frame were then locked together using screws and nuts. A bone pin was then inserted into the mounting assembly, which guided one end of the pin to the bone. This fixed the bone pin in the mounting assembly on the upper first mounting plate to the upper end of the fracture site, and the bone pin in the mounting assembly on the lower first mounting plate to the lower end of the fracture site. The bone pin in the mounting assembly on the support frame was fixed to the middle of the fracture site. The locking assembly then secured the bone pin within the bone pin holder, preventing eccentric stress during the locking process and avoiding stress acting on the bone pin and the patient's fracture site, thus reducing patient discomfort.

[0028] Meanwhile, the support frame allows the force applied and borne by the patient during movement to be transferred from the upper end of the fracture to the lower end, thus preventing the force applied or borne by the upper end of the fracture from being transferred to the support frame. Instead, the force is transferred to the fracture site through the mounting components and bone pins, thereby avoiding direct stress on the fracture site and reducing the pain of patients with multi-point fractures. Attached Figure Description

[0029] To more clearly illustrate the technical solutions in the embodiments of the present invention or the prior art, the accompanying drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are merely some embodiments of the present invention. For those skilled in the art, other drawings can be obtained based on these drawings without any creative effort.

[0030] Figure 1 This invention provides a three-dimensional composite fracture external fixation frame. Figure 1 ;

[0031] Figure 2 This is a front view of a combined external fixation frame for fractures according to the present invention;

[0032] Figure 3 This is a schematic diagram of the upper support plate and its connecting structure;

[0033] Figure 4 This is a schematic diagram of the lower support plate and its connecting structure;

[0034] Figure 5 for Figure 3 Enlarged view of point A in the middle;

[0035] Figure 6 This is a schematic diagram of the movable sleeve and its connection structure.

[0036] The labels in the diagram represent:

[0037] 1. End support frame; 11. First mounting plate; 12. Connecting rod; 13. Connecting hole; 14. Mounting hole; 2. Support frame; 21. Upper support plate; 22. Lower support plate; 23. Support rod; 24. Round rod; 25. Upper connecting rod; 26. Lower connecting rod; 27. Second mounting plate; 3. Assembly; 31. Upper rod; 32. Lower groove; 33. Receiving groove; 34. First locking hole; 35. Second locking hole; 4. Bone needle; 5. Bone needle bracket; 51. Fixing assembly; 511. Mounting plate; 513. Support plate; 514. Sleeve; 515. Limiting sleeve; 52. Locking assembly; 521. Movable groove; 522. Steel ball; 523. Moving sleeve; 524. Fastening groove; 525. Locking sleeve. Detailed Implementation

[0038] To make the objectives, technical solutions, and advantages of the embodiments of the present invention clearer, the technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some, not all, of the embodiments of the present invention. All other embodiments obtained by those skilled in the art based on the embodiments of the present invention without creative effort are within the scope of protection of the present invention.

[0039] The terms "left," "right," "front," "back," "up," and "down" used in the following description refer to the orientation from the perspective of the front view.

[0040] Example 1

[0041] In some embodiments, please refer to the appendix to the instruction manual. Figure 1-3 A combined fracture external fixation frame includes two sets of end support frames 1 and multiple support frames 2;

[0042] The end support frame 1 includes a connecting rod 12, two first mounting plates 11, and multiple connecting holes 13. One end of the two first mounting plates 11 is hinged, and the other end of the first mounting plates 11 is detachably connected by screws and nuts. Multiple sets of mounting holes 14 are evenly spaced in a circular array on the first mounting plates 11. Each mounting hole 14 consists of three through holes. Multiple connecting rods 12 are evenly fixedly mounted in a circular array on the lower side of the first mounting plates 11. Connecting holes 13 are evenly spaced on the connecting rods 12. Multiple support frames 2 are connected by a combination assembly 3. The connecting rods 12 and the support frames 2 are connected by the combination assembly 3. The support frames 2 are located between the two sets of first mounting plates 11. Multiple bone needle supports 5 for fixing bone needles 4 are installed on the first mounting plates 11 and the support frames 2.

[0043] The bone needle support 5 includes a fixing component 51 and a locking component 52. The fixing component 51 is detachably mounted on the first mounting plate 11 and the support frame 2 by means of screws and nuts, and the locking component 52 is mounted on the fixing component 51.

[0044] In this embodiment, when the combined fracture external fixation frame is working normally, the two sets of first mounting plates 11 and support frames 2 are spliced ​​together according to the patient's fracture condition via connecting rods 12 and assembly 3. During this process, the overall height of the first mounting plates 11 and support frames 2 is adjusted according to the fixation position to adapt to different patients and different fracture conditions. According to the expected fixation position, the fixation assembly 51 is installed on the upper and lower first mounting plates 11 and support frames 2 and locked with screws and nuts. Subsequently, after the patient's fractured limb is reduced, it is placed between the first mounting plates 11 and support frames 2 to align the patient's broken bones. After locking the first mounting plates 11 and support frames 2 with screws and nuts, bone pins 4 are inserted into the fixation assembly 51. Guided by the fixation assembly 51, one end of the bone pin 4 is fixed into the bone. Thus, the upper first mounting plate 11 The bone pin 4 in the fixation component 51 on the upper side is fixed to the upper end of the fracture site, and the bone pin 4 in the fixation component 51 on the lower side of the first mounting plate 11 is fixed to the lower end of the fracture site; the bone pin 4 in the fixation component 51 on the support frame 2 is fixed to the middle of the fracture site; then the bone pin 4 is locked in the bone pin bracket 5 by the locking component 52; the locking component 52 avoids the generation of bias stress during the locking of the bone pin 4, thereby locking the bone pin 4 and avoiding stress acting on the bone pin 4 and the patient's fracture site, which would increase the patient's pain; at the same time, the setting of the support frame 2 allows the force applied and borne by the patient during movement to be transmitted from the upper end of the fracture site to the lower end of the fracture site, thereby avoiding the force applied or borne by the upper end of the fracture site to be transmitted to the support frame 2 and then to the patient's fracture site through the fixation component 51 and the bone pin 4; thus avoiding stress acting directly on the fracture site and reducing the pain of patients with multi-point fractures.

[0045] Example 2

[0046] In some embodiments, such as Figure 1-6 As shown, in a preferred embodiment of the present invention, the fixing component 51 includes a mounting plate 511, a support plate 513, and a sleeve 514. The mounting plate 511 has a mounting hole 14. The mounting plate 511 is detachably mounted on the first mounting plate 11 and the support component 2 through the mounting hole 14, a screw, and a nut. The support plate 513 is fixedly mounted on the upper side of the mounting plate 511, and the sleeve 514 is fixedly mounted on the upper side of the support plate 513.

[0047] The fixing component 51 also includes a limiting sleeve 515. The limiting sleeve 515 is fixedly installed at the outer end of the sleeve 514. The inner diameter of the limiting sleeve 515 is the same as the inner diameter of the sleeve 514, and the outer diameter of the limiting sleeve 515 is smaller than the outer diameter of the sleeve 514. The bone needle 4 is slidably connected to the sleeve 514 and the limiting sleeve 515.

[0048] The locking assembly 52 includes a movable groove 521, a steel ball 522, a movable sleeve 523, a fastening groove 524, and a locking sleeve 525. Multiple movable grooves 521 are arranged in a circumferential array on the sleeve 514, and the steel ball 522 is disposed within each movable groove 521. The movable sleeve 523 is slidably connected to the sleeve 514. A fastening groove 524 is provided on the side of the movable sleeve 523 near the steel ball 522. The locking sleeve 525 is slidably connected to the limiting sleeve 515. The locking sleeve 525 abuts against the sleeve 514, and the locking sleeve 525 is threadedly connected to the movable sleeve 523.

[0049] The fastening groove 524 is designed as a frustum shape with a larger outer diameter and a smaller inner diameter.

[0050] In this embodiment, when the fixing component 51 and the locking component 52 are working normally, after aligning the mounting hole 14 on the mounting plate 511 with the mounting hole 14 on the first mounting plate 11 according to the position to be fixed, the bone pin is installed on the upper side of the first mounting plate 11 by means of nuts and screws; then, the bone pin 4 is inserted into the sleeve 514 and the limiting sleeve 515. The size of the bone pin 4 is smaller than that of the sleeve 514 and the limiting sleeve 515. The sleeve 514 and the limiting sleeve 515 are used to pre-position the bone pin 4. Then, the bone pin 4 is driven into the broken bone of the patient by the bone nail inserter. The fractured bone is fixed; after insertion, the movable sleeve 523 and the locking sleeve 525 are moved so that the locking sleeve 525 is threadedly connected to the movable sleeve 523; at this time, the fastening groove 524 in the movable sleeve 523 presses the steel ball 522 inward, and multiple steel balls 522 move in the movable groove 521 until the steel ball 522 contacts the bone needle 4 and locks the bone needle 4; during this process, the bone needle 4 is clamped by multiple evenly distributed steel balls 522 to avoid the bone needle 4 being subjected to unidirectional force during the fastening process, which would cause stress concentration between the bone needle 4 and the fracture site.

[0051] Example 3

[0052] In some embodiments, such as Figure 1-6 As shown, in a preferred embodiment of the present invention, the support frame 2 includes an upper support plate 21, a lower support plate 22, support rods 23, round rods 24, and an installation assembly. The lower end of the support rod 23 is fixedly mounted with the round rod 24; the upper end of the support rod 23 is fixedly connected to the upper support plate 21, and the bottom end of the round rod 24 is fixedly connected to the lower support plate 22; multiple support rods 23 are provided, and the multiple support rods 23 are evenly distributed in a circumferential array; the installation assembly is installed between the upper support plate 21 and the lower support plate 22.

[0053] The mounting assembly includes an upper connecting rod 25, a lower connecting rod 26, and a second mounting plate 27. One end of the upper connecting rod 25 and the lower connecting rod 26 is hinged to the second mounting plate 27, and the other end of the upper connecting rod 25 is hinged to the upper support plate 21. The other end of the lower connecting rod 26 is hinged to the lower support plate 22. Multiple upper connecting rods 25 are provided, and the multiple upper connecting rods 25 are evenly distributed in a circumferential array. Multiple mounting holes 14 are evenly opened in a circumferential array on the second mounting plate 27. The mounting plate 511 is detachably mounted on the second mounting plate 27 through the mounting holes 14, screws, and nuts. The upper support plate 21, the lower support plate 22, and the second mounting plate 27 are each composed of two arc-shaped plates with one end hinged together, and the other end of the arc-shaped plates is detachably connected by nuts and screws.

[0054] The assembly 3 includes an upper rod 31, a lower groove 32, a receiving groove 33, and a locking assembly. The upper rod 31 is fixedly installed on the upper side of the upper support plate 21, and the lower groove 32 is opened on the lower side of the lower support plate 22. The upper rod 31 and the lower groove 32 are aligned with the support rod 23. The adjacent upper rod 31 and the lower groove 32 are inserted into each other. The upper rod 31 and the support rod 23 are provided with a through receiving groove 33, which is connected to the lower groove 32. The receiving groove 33 is inserted into the connecting rod 12.

[0055] The locking assembly includes a first locking hole 34 and a second locking hole 35. The first locking hole 34 is provided on the upper rod 31 and the receiving groove 33; a plurality of second locking holes 35 are evenly provided on the support rod 23; the spacing between the second locking holes 35 is the same as the spacing between the connecting holes 13.

[0056] In this embodiment, when the support frame 2 and the assembly 3 are working normally, the connecting rods 12 on the two sets of first mounting plates 11 are aligned with the upper and lower ends of the receiving groove 33 and inserted. The insertion depth is adjusted according to the position and length of the patient's fractured bone, and the connecting hole 13 is aligned with the second locking hole 35. Then, the connecting rod 12 and the support rod 23 are locked by screws and nuts. According to the position to be fixed, the mounting plate 511 is installed on the upper first mounting plate 11, the second mounting plate 27 and the lower first mounting plate 11, and the sleeve 514 and the limiting sleeve 515 are aligned with the position to be fixed. The mounting plate 511 is locked by nuts and screws. The patient's fractured limb is placed in the first mounting plate 11, the upper support plate 21, the lower support plate 22 and the second mounting plate 27. The first mounting plate 11, the upper support plate 21, the lower support plate 22 and the second mounting plate 27 are closed and locked by nuts. The upper connecting rod 25 is used to lock the limb. The lower connecting rod 26 fixes the second mounting plate 27, while preventing the stress on the upper support plate 21 and the lower support plate 22 from being directly transmitted to the second mounting plate 27. If the patient has multiple fractures and multiple sets of second mounting plates 27 are needed, the upper rod 31 on the upper side is aligned with the lower groove 32 on the lower side, and the upper rod 31 is inserted into the lower groove 32. The adjacent upper support plates 21 and lower support plates 22 are fixed by nuts and screws. This allows the device to be adjusted according to the location and condition of the patient's fracture. During use, when the upper and lower ends of the patient's fracture are subjected to force, the force on the upper end is transmitted to the lower end of the first mounting plate 11 through the upper mounting plate 11, the upper support plate 21, the support rod 23, and the lower mounting plate 11, the steel ball 522, the movable sleeve 523, the fastening groove 524, the sleeve 514, and the bone needle 4, thus preventing the stress from being directly transmitted to the bone needle 4 at the fracture site.

[0057] Example 4

[0058] In some embodiments, such as Figure 1-6 As shown, in order to better achieve the purpose of the present invention, the present invention also provides a method for using a combined fracture external fixation frame, including the following steps:

[0059] Step 1: Based on the patient's fracture condition, assemble the device and select one or more sets of second mounting plates 27; if one set of second mounting plates 27 is selected, proceed to Step 2; if multiple sets of second mounting plates 27 are selected, proceed to Step 3.

[0060] Step 2: Align the connecting rods 12 on the two sets of first mounting plates 11 with the upper and lower ends of the receiving groove 33 and insert them. Adjust the insertion depth according to the location and length of the patient's fractured bone, and align the connecting hole 13 with the second locking hole 35. Then lock the connecting rod 12 and the support rod 23 with the screw and nut. Install the mounting plate 511 on the upper first mounting plate 11, the second mounting plate 27 and the lower first mounting plate 11 according to the position to be fixed. Align the sleeve 514 and the limiting sleeve 515 with the position to be fixed, and lock the mounting plate 511 with the nut and screw.

[0061] Step 3: After aligning the adjacent upper rods 31 and lower grooves 32, insert the upper rod 31 into the lower groove 32, and fix the adjacent upper support plates 21 and lower support plates 22 with nuts and screws to complete the assembly of multiple sets of second mounting plates 27; align the connecting rods 12 on the two sets of first mounting plates 11 with the upper and lower ends of the receiving grooves 33 respectively and insert them, adjust the insertion depth according to the position and length of the patient's fractured bone, and align the connecting hole 13 with the second locking hole 35, and then lock the connecting rod 12 and support rod 23 with screws and nuts; install the mounting plates 511 on the upper first mounting plate 11, the second mounting plate 27 and the lower first mounting plate 11 respectively according to the position to be fixed, and align the sleeve 514 and the limiting sleeve 515 with the position to be fixed, and lock the mounting plates 511 with nuts and screws;

[0062] Step 4: Place the patient's fractured limb inside the first mounting plate 11, upper support plate 21, lower support plate 22, and second mounting plate 27. Close the first mounting plate 11, upper support plate 21, lower support plate 22, and second mounting plate 27 and lock them with nuts.

[0063] Step 5: Insert the bone pin 4 into the sleeve 514 and the limiting sleeve 515. The size of the bone pin 4 is smaller than that of the sleeve 514 and the limiting sleeve 515. The bone pin 4 is pre-positioned by the sleeve 514 and the limiting sleeve 515. Then, the bone pin 4 is driven into the patient's fracture bone by the bone screw driver to fix the fracture bone. After the driving is completed, move the moving sleeve 523 and the locking sleeve 525 so that the locking sleeve 525 is threadedly connected to the moving sleeve 523. At this time, the fastening groove 524 in the moving sleeve 523 presses the steel ball 522 inward. Multiple steel balls 522 move in the movable groove 521 until the steel ball 522 contacts the bone pin 4 and locks the bone pin 4.

[0064] The above embodiments are only used to illustrate the technical solutions of the present invention, and are not intended to limit it. Although the present invention has been described in detail with reference to the foregoing embodiments, those skilled in the art should understand that modifications can still be made to the technical solutions described in the foregoing embodiments, or equivalent substitutions can be made to some of the technical features. Such modifications or substitutions will not cause the essence of the corresponding technical solutions to deviate from the spirit and scope of the technical solutions of the embodiments of the present invention.

Claims

1. A combined fracture external fixation frame, comprising two sets of end support frames (1) and multiple support frames (2), characterized in that: The end support frame (1) includes a connecting rod (12), two first mounting plates (11) and multiple connecting holes (13). One end of the two first mounting plates (11) is hinged, and the other end of the first mounting plates (11) is detachably connected by screws and nuts. Multiple sets of mounting holes (14) are opened in a circumferential array at equal intervals on the first mounting plates (11). Multiple connecting rods (12) are evenly fixedly installed in a circumferential array on the lower side of the first mounting plates (11). Connecting holes (13) are opened in equal intervals on the connecting rods (12). Multiple support frames (2) are connected by a combination assembly (3). The connecting rods (12) and the support frames (2) are connected by the combination assembly (3). The support frames (2) are located between the two sets of first mounting plates (11). Multiple bone needle supports (5) for fixing bone needles (4) are installed on the first mounting plates (11) and the support frames (2). The bone pin support (5) includes a fixing component (51) and a locking component (52). The fixing component (51) is detachably mounted on the first mounting plate (11) and the support frame (2) by means of screws and nuts. The locking component (52) is mounted on the fixing component (51). The fixing component (51) includes a mounting plate (511), a support plate (513), and a sleeve (514). The mounting plate (511) has a mounting hole (14). The mounting plate (511) is detachably mounted on the first mounting plate (11) and the support frame (2) through the mounting hole (14), a screw, and a nut. The support plate (513) is fixedly mounted on the upper side of the mounting plate (511), and the sleeve (514) is fixedly mounted on the upper side of the support plate (513). The fixing component (51) also includes a limiting sleeve (515), which is fixedly installed on the outer end of the sleeve (514). The inner diameter of the limiting sleeve (515) is the same as the inner diameter of the sleeve (514), and the outer diameter of the limiting sleeve (515) is smaller than the outer diameter of the sleeve (514). The bone needle (4) is slidably connected to the sleeve (514) and the limiting sleeve (515). The locking assembly (52) includes a movable groove (521), a steel ball (522), a movable sleeve (523), a fastening groove (524), and a locking sleeve (525). The sleeve (514) has multiple movable grooves (521) arranged in a circumferential array, and the movable grooves (521) contain steel balls (522). The movable sleeve (523) is slidably connected to the sleeve (514). The movable sleeve (523) has a fastening groove (524) on the side near the steel ball (522). The locking sleeve (525) is slidably connected to the limiting sleeve (515). The locking sleeve (525) abuts against the sleeve (514), and the locking sleeve (525) is threadedly connected to the movable sleeve (523).

2. The combined fracture external fixation frame according to claim 1, characterized in that, The fastening groove (524) is designed as a frustum shape with a larger outer diameter and a smaller inner diameter.

3. The combined fracture external fixation frame according to claim 2, characterized in that, The support frame (2) includes an upper support plate (21), a lower support plate (22), a support rod (23), a round rod (24), and an installation assembly. The lower end of the support rod (23) is fixedly installed with the round rod (24). The upper end of the support rod (23) is fixedly connected to the upper support plate (21), and the bottom end of the round rod (24) is fixedly connected to the lower support plate (22). There are multiple support rods (23), and the multiple support rods (23) are evenly distributed in a circumferential array. The installation assembly is installed between the upper support plate (21) and the lower support plate (22).

4. The combined fracture external fixation frame according to claim 3, characterized in that, The mounting assembly includes an upper connecting rod (25), a lower connecting rod (26), and a second mounting plate (27). One end of the upper connecting rod (25) and the lower connecting rod (26) is hinged to the second mounting plate (27), and the other end of the upper connecting rod (25) is hinged to the upper support plate (21). The other end of the lower connecting rod (26) is hinged to the lower support plate (22). There are multiple upper connecting rods (25), which are evenly distributed in a circumferential array. Multiple mounting holes (14) are evenly distributed in a circumferential array on the second mounting plate (27). The mounting plate (511) is detachably mounted on the second mounting plate (27) through the mounting holes (14), screws, and nuts. The upper support plate (21), the lower support plate (22), and the second mounting plate (27) are all composed of two arc-shaped plates that are hinged at one end, and the other end of the arc-shaped plates is detachably connected by nuts and screws.

5. The combined fracture external fixation frame according to claim 4, characterized in that, The combined component (3) includes an upper rod (31), a lower groove (32), a receiving groove (33), and a locking component. The upper rod (31) is fixedly installed on the upper side of the upper support plate (21), and the lower groove (32) is opened on the lower side of the lower support plate (22). The upper rod (31) and the lower groove (32) are aligned with the support rod (23). The adjacent upper rod (31) and the lower groove (32) are inserted into each other. The upper rod (31) and the support rod (23) are provided with a through receiving groove (33), which is connected to the lower groove (32). The receiving groove (33) is inserted into the connecting rod (12).

6. The combined fracture external fixation frame according to claim 5, characterized in that, The locking assembly includes a first locking hole (34) and a second locking hole (35). The first locking hole (34) is provided on the upper rod (31) and the receiving groove (33); a plurality of second locking holes (35) are evenly provided on the support rod (23); the spacing between the second locking holes (35) is the same as the spacing between the connecting holes (13).

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