Combined fracture external fixation support and use method thereof

Abstract

The invention discloses a combined fracture external fixation support and a use method thereof, and belongs to the technical field of medical instruments, the combined fracture external fixation support comprises an end support frame and a support group frame, the end support frame comprises a first mounting plate, a connecting rod and a connecting hole; a plurality of connecting rods are uniformly and fixedly mounted on the lower side of the first mounting plate in a circumferential array; connecting holes are formed in the connecting rod at equal intervals; the plurality of supporting group frames are connected through a combination assembly; the connecting rod and the supporting group frame are connected through a combination assembly; the supporting group frame is positioned between the two groups of first mounting plates; a plurality of bone needle brackets for fixing bone needles are mounted on the first mounting plate and the supporting group frame; the spicule support comprises an installation assembly and a locking assembly, the installation assembly is detachably installed on the first installation plate and the supporting set frame through a screw and a nut, and the locking assembly is installed on the installation assembly. By means of the mode, deviation stress is prevented from being generated in the bone needle locking process, the stress is prevented from acting on the bone needle and the broken bone of a patient, and pain of the patient is prevented from being increased.

Description

Technical Field

[0001] The present invention relates to the technical field of medical devices, and in particular to a combined fracture external fixation bracket and a use method thereof. Background Art

[0002] Fracture patients need to fix the bone position during treatment or rehabilitation to avoid dislocation of broken bones and difficulty in healing; traditional plaster fixation methods are difficult to ventilate, and inserting steel plates at the broken bones requires surgery, which is complicated and has a long recovery period; therefore, some fracture patients currently use external fixators to fix the broken bones.

[0003] For example, Chinese patent CN216985097U discloses a fracture external fixator, which is provided with a support frame and a bone pin fixing support. The bone pins are driven into the upper and lower ends of the patient's broken bone by a bone screw driver, and the bone pins are fixed by the fixing support.

[0004] However, the upper and lower bone screws of the device are rigidly connected to the same set of support frames through fixed supports. When treating fractures with multiple breakpoints, the force borne or applied by the upper end is transmitted downward step by step, which can easily cause the middle broken bones to bear greater stress and increase the patient's pain.

[0005] Based on this, the present invention designs a combined fracture external fixator and a use method thereof to solve the above problems. Summary of the invention

[0006] In view of the above-mentioned shortcomings of the prior art, the present invention provides a combined fracture external fixator and a method of using the same.

[0007] To achieve the above objectives, the present invention is implemented through the following technical solutions:

[0008] A combined fracture external fixation bracket comprises two groups of end support brackets and a plurality of support group brackets;

[0009] The end support frame includes a connecting rod, two first mounting plates and a plurality of connecting holes, one end of the two first mounting plates is hinged, and the other end of the first mounting plate is detachably connected by a screw and a nut; a plurality of groups of mounting holes are arranged in a circular array with equal spacing; a plurality of connecting rods are evenly fixedly installed in a circular array on the lower side of the first mounting plate; connecting holes are arranged in equal spacing on the connecting rods; a plurality of support groups are connected by a combination assembly; the connecting rod and the support group are connected by a combination assembly; and the support group is located between the two groups of first mounting plates; a plurality of bone needle brackets for fixing bone needles are installed on the first mounting plate and the support group;

[0010] The bone needle bracket includes a fixing assembly and a locking assembly. The fixing assembly is detachably mounted on the first mounting plate and the supporting assembly frame through a screw rod and a nut, and the locking assembly is mounted on the fixing assembly.

[0011] Furthermore, the fixing assembly includes a mounting plate, a support plate and a sleeve, and a mounting hole is opened on the mounting plate; the mounting plate can be removably mounted on the first mounting plate and the support assembly through the mounting hole, 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 assembly also includes a limiting cylinder, the outer end of the sleeve is fixedly mounted with the limiting cylinder, the inner diameter of the limiting cylinder is consistent with the inner diameter of the sleeve, and the outer diameter of the limiting cylinder is smaller than the outer diameter of the sleeve; the bone needle is slidingly connected with the sleeve and the limiting cylinder.

[0013] Furthermore, the locking assembly includes a movable groove, a steel ball, a movable sleeve, a fastening groove and a locking sleeve. The sleeve is provided with a plurality of movable grooves in a circular array, and a steel ball is arranged in the movable groove; the movable sleeve is slidingly connected with the sleeve; a fastening groove is provided on the side of the movable sleeve close to the steel ball; the locking sleeve is slidingly connected with the limiting sleeve; the locking sleeve abuts against the sleeve, and the locking sleeve is threadedly connected with the movable sleeve.

[0014] Furthermore, the fastening groove is configured to be a truncated cone with a larger outer portion and a smaller inner portion.

[0015] Furthermore, the support assembly frame includes an upper support plate, a lower support plate, a support rod, a round rod and an installation assembly, wherein the round rod is fixedly installed at the lower end of the support 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; a plurality of support rods are provided, and the plurality of support rods are evenly distributed in a circular array with equal spacing; and 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 connecting rod and the lower connecting rod is hinged on the second mounting plate, the other end of the upper connecting rod is hinged to the upper support plate, and the other end of the lower connecting rod is hinged to the lower support plate; a plurality of upper connecting rods are provided, and the plurality of upper connecting rods are evenly distributed in a circular array with equal intervals; a plurality of mounting holes are evenly arranged in a circular array on the second mounting plate, and the mounting plate can be removably mounted on the second mounting plate by means of the mounting holes, screws and nuts; the upper support plate, the lower support plate and the second mounting plate are each composed of two arc-shaped plates hinged at one end, and the other end of the arc-shaped plates can be removably connected by nuts and screws.

[0017] Furthermore, the combination assembly includes an upper rod, a lower groove, a receiving groove and a locking assembly, the upper rod is fixedly installed on the upper side of the upper support plate, 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; the adjacent upper rods are plugged into the lower grooves; the upper rods and the support rods have through receiving grooves opened on the upper sides, and the receiving grooves are connected to the lower grooves; the receiving grooves are plugged into the connecting rods.

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

[0019] In order to better achieve the purpose of the present invention, the present invention also provides a method for using a combined fracture external fixator, comprising the following steps:

[0020] Step 1: According to the patient's fracture condition, the device is combined and one or more sets of second mounting plates are selected; if one set of second mounting plates is selected, step 2 is performed; if multiple sets of second mounting plates are selected, step 3 is performed;

[0021] Step 2: Align the connecting rods of the two sets of first mounting plates with the upper and lower ends of the receiving grooves respectively and insert them, adjust the insertion depth according to the position and length of the patient's broken bone, align the connecting hole with the second locking hole, and 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 respectively according to the positions to be fixed, align the sleeve and the limit cylinder with the positions to be fixed, and lock the mounting plates with the nuts and screws;

[0022] Step three: After aligning the adjacent upper rods and lower grooves, insert the upper rods into the lower grooves, and fix the adjacent upper support plates and lower support plates by 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 accommodating grooves respectively and insert them, adjust the insertion depth according to the position and length of the patient's broken bone, align the connecting holes with the second locking holes, and then lock the connecting rods and support rods by screws and nuts; install the mounting plates on the first mounting plate on the upper side, the second mounting plate and the first mounting plate on the lower side respectively according to the positions to be fixed, align the sleeve and the limit cylinder with the positions to be fixed, and lock the mounting plates by nuts and screws;

[0023] Step 4: placing the fractured limb of the patient on the first mounting plate, the upper support plate, the lower support plate, and the second mounting plate, closing the first mounting plate, the upper support plate, the lower support plate, and the second mounting plate, and locking them with nuts;

[0024] Step 5: Insert the bone needle into the sleeve and the limiting cylinder. The size of the bone needle is smaller than that of the sleeve and the limiting cylinder. Pre-position the bone needle through the sleeve and the limiting cylinder, and then drive the bone needle into the patient's broken bone through the bone screw driver to fix the patient's broken bone. After the driving is completed, move the movable sleeve and the locking sleeve to make the locking sleeve threadedly connected to the movable sleeve. At this time, the fastening groove in the movable sleeve presses the steel balls inward, and multiple steel balls move in the movable groove until the steel balls contact the bone needle to lock the bone needle.

[0025] Compared with the prior art, the present invention has the following beneficial effects:

[0026] According to the fracture conditions of the patients, the two sets of first mounting plates and the support frame are spliced ​​together through connecting rods and combined components. In this process, the overall height of the first mounting plates and the support frame is adjusted according to the fixed positions to adapt to different patients and different fracture conditions;

[0027] Subsequently, the fractured limb of the patient is repositioned and placed between the first mounting plate and the support assembly frame to align the broken bone of the patient; after the first mounting plate and the support assembly frame are locked by means of screws and nuts, the bone needle is inserted into the mounting assembly, and one end of the bone needle is fixed to the bone through the guidance of the mounting assembly; thereby, the bone needle in the mounting assembly on the upper first mounting plate is fixed at the upper end of the broken bone position, and the bone needle in the mounting assembly on the lower first mounting plate is fixed at the lower end of the broken bone position; the bone needle in the mounting assembly on the support assembly frame is fixed at the middle of the broken bone; the bone needle is locked in the bone needle bracket by means of the locking assembly to avoid the generation of deviated stress during the process of locking the bone needle, and to avoid the stress acting on the bone needle and the broken bone of the patient, thereby increasing the pain of the patient;

[0028] At the same time, through the setting of the support frame, the force applied or borne by the patient when moving is transmitted from the upper end of the broken bone to the lower end of the broken bone, thereby avoiding the force applied or borne by the upper end of the broken bone from being transmitted to the support frame, and transmitting it to the patient's broken bone through the installation components and bone pins; thereby avoiding stress directly acting on the broken bone and reducing the pain of patients with multiple fractures. BRIEF DESCRIPTION OF THE DRAWINGS

[0029] In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings required for use in the embodiments or the prior art descriptions are briefly introduced below. Obviously, the drawings described below are only some embodiments of the present invention, and for ordinary technicians in this field, other drawings can be obtained based on these drawings without creative work.

[0030] Figure 1 A three-dimensional combined fracture external fixator according to the present invention Figure 1 ;

[0031] Figure 2 It is a front view of a combined fracture external fixator of the present invention;

[0032] Figure 3 Schematic diagram of the upper support plate and its connection structure;

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

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

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

[0036] The numbers in the figure represent:

[0037] 1. End support frame; 11. First mounting plate; 12. Connecting rod; 13. Connecting hole; 14. Mounting hole; 2. Support assembly; 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. Combination assembly; 31. Upper rod; 32. Lower groove; 33. Accommodating 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 cylinder; 52. Locking assembly; 521. Movable groove; 522. Steel ball; 523. Moving sleeve; 524. Fastening groove; 525. Locking sleeve. DETAILED DESCRIPTION

[0038] In order to make the purpose, technical solution and advantages of the embodiments of the present invention clearer, the technical solution in the embodiments of the present invention will be clearly and completely described below in conjunction with the drawings in the embodiments of the present invention. Obviously, the described embodiments are part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0039] The terms “left”, “right”, “front”, “back”, “up” and “down” mentioned in the following description are oriented in the viewing direction of the front view.

[0040] Embodiment 1

[0041] In some embodiments, please refer to the attached instructions. Figure 1-3 , a combined fracture external fixator, comprising two groups of end support frames 1 and a plurality of support group frames 2;

[0042] The end support frame 1 includes a connecting rod 12, two first mounting plates 11 and a plurality of connecting holes 13, one end of the two first mounting plates 11 is hinged, and the other end of the first mounting plate 11 is detachably connected by a screw and a nut; a plurality of groups of mounting holes 14 are provided on the first mounting plate 11 in a circular array with equal intervals; the mounting hole 14 is composed of three through holes; a plurality of connecting rods 12 are evenly fixedly installed on the lower side of the first mounting plate 11 in a circular array; connecting holes 13 are provided on the connecting rods 12 with equal intervals; a plurality of support groups 2 are connected by a combination component 3; the connecting rod 12 and the support group 2 are connected by the combination component 3; and the support group 2 is located between the two groups of first mounting plates 11; a plurality of bone needle brackets 5 for fixing bone needles 4 are installed on the first mounting plate 11 and the support group 2;

[0043] The bone needle support 5 includes a fixing assembly 51 and a locking assembly 52 . The fixing assembly 51 is detachably mounted on the first mounting plate 11 and the support assembly frame 2 through a screw and a nut, and the locking assembly 52 is mounted on the fixing assembly 51 .

[0044] In this embodiment, when the combined fracture external fixator is working normally, the two groups of first mounting plates 11 and the support frame 2 are spliced ​​through the connecting rod 12 and the combined component 3 according to the patient's fracture condition. In this process, the overall height of the first mounting plate 11 and the support frame 2 is adjusted according to the fixed position to adapt to different patients and different fracture conditions; the fixing component 51 is installed on the first mounting plates 11 and the support frame 2 on the upper and lower sides according to the expected fixed position, and locked by screws and nuts; then the patient's fractured limb is repositioned and placed between the first mounting plate 11 and the support frame 2 to align the patient's broken bones; after locking the first mounting plate 11 and the support frame 2 by screws and nuts, the bone needle 4 is inserted into the fixing component 51, and one end of the bone needle 4 is fixed to the bone through the fixing component 51 for guidance; thereby, the upper first mounting plate 11 The bone needle 4 in the fixing assembly 51 on the upper part is fixed to the upper end of the broken bone position, and the bone needle 4 in the fixing assembly 51 on the lower first mounting plate 11 is fixed to the lower end of the broken bone position; the bone needle 4 in the fixing assembly 51 on the supporting assembly frame 2 is fixed to the middle part of the broken bone; then the bone needle 4 is locked in the bone needle bracket 5 by the locking assembly 52; the locking assembly 52 is used to avoid the generation of bias stress in the process of locking the bone needle 4, so that the bone needle 4 can be locked, and the stress is avoided from acting on the bone needle 4 and the broken bone of the patient, increasing the pain of the patient; at the same time, through the setting of the supporting assembly frame 2, the force applied or borne by the patient when moving is transmitted from the upper end of the broken bone to the lower end of the broken bone, thereby avoiding the force applied or borne by the upper end of the broken bone from being transmitted to the supporting assembly frame 2, and transmitted to the broken bone of the patient through the fixing assembly 51 and the bone needle 4; thereby avoiding the stress from acting directly on the broken bone, reducing the pain of patients with multiple fractures.

[0045] Embodiment 2

[0046] In some embodiments, Figure 1-6 As shown, as a preferred embodiment of the present invention, the fixing assembly 51 includes a mounting plate 511, a support plate 513 and a sleeve 514, and the mounting plate 511 is provided with a mounting hole 14; the mounting plate 511 is detachably mounted on the first mounting plate 11 and the support assembly 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 assembly 51 further includes a limiting cylinder 515, the outer end of the sleeve 514 is fixedly mounted with the limiting cylinder 515, the inner diameter of the limiting cylinder 515 is consistent with the inner diameter of the sleeve 514, and the outer diameter of the limiting cylinder 515 is smaller than the outer diameter of the sleeve 514; the bone needle 4 is connected to the sleeve 514 and the limiting cylinder 515 in a limiting sliding manner;

[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. The sleeve 514 is provided with a plurality of movable grooves 521 in a circumferential array, and the movable grooves 521 are provided with steel balls 522; the movable sleeve 523 is connected to the sleeve 514 in a limited sliding manner; a fastening groove 524 is provided on a side of the movable sleeve 523 close to the steel ball 522; the locking sleeve 525 is connected to the limited sliding manner of 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 configured to be in the shape of a truncated cone with a larger outer portion and a smaller inner portion.

[0050] In this embodiment, when the fixing assembly 51 and the locking assembly 52 work normally, the mounting hole 14 on the mounting plate 511 is aligned with the mounting hole 14 on the first mounting plate 11 according to the position to be fixed, and then the bone needle 4 is installed on the upper side of the first mounting plate 11 by means of a nut and a screw; then the bone needle 4 is inserted into the sleeve 514 and the limiting tube 515, the size of the bone needle 4 is smaller than the sleeve 514 and the limiting tube 515, the bone needle 4 is pre-positioned by means of the sleeve 514 and the limiting tube 515, and then the bone needle 4 is driven into the broken bone of the patient by means of a bone screw driver, and the bone needle 4 is fixed to the patient. After the insertion is completed, the movable sleeve 523 and the locking sleeve 525 are moved to make the locking sleeve 525 threadedly connected with 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 to lock the bone needle 4; in this process, the bone needle 4 is clamped by multiple evenly distributed steel balls 522 to prevent the bone needle 4 from being subjected to unidirectional force during the fastening process, resulting in stress concentration between the bone needle 4 and the fracture.

[0051] Embodiment 3

[0052] In some embodiments, Figure 1-6 As shown, as a preferred embodiment of the present invention, the support assembly frame 2 includes an upper support plate 21, a lower support plate 22, a support rod 23, a round rod 24 and a mounting 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; a plurality of support rods 23 are provided, and the plurality of support rods 23 are evenly distributed in a circular array with equal spacing; the mounting 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 are hinged on the second mounting plate 27, the other end of the upper connecting rod 25 is hinged to the upper support plate 21, and the other end of the lower connecting rod 26 is hinged to the lower support plate 22; a plurality of upper connecting rods 25 are provided, and the plurality of upper connecting rods 25 are evenly distributed in a circular array with equal spacing; a plurality of mounting holes 14 are evenly opened in a circular array on the second mounting plate 27, and 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 plates hinged at one end, and the other end of the arc plates is detachably connected through nuts and screws;

[0054] The combination 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 rods 31 are plugged into the lower groove 32; the upper rod 31 and the support rod 23 are opened on the upper side with a through receiving groove 33, and the receiving groove 33 is connected with the lower groove 32; the receiving groove 33 is plugged into the connecting rod 12;

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

[0056] In this embodiment, when the support assembly frame 2 and the combination component 3 are working normally, the connecting rods 12 on the two groups of first mounting plates 11 are aligned with the upper and lower ends of the accommodating grooves 33 and then inserted, the insertion depth is adjusted according to the position and length of the patient's broken bone, and the connecting hole 13 is aligned with the second locking hole 35, and then the connecting rod 12 and the support rod 23 are locked by the screw and nut; the mounting plates 511 are respectively installed on the first mounting plate 11, the second mounting plate 27 on the upper side and the first mounting plate 11 on the lower side according to the position to be fixed, and the sleeve 514 and the limiting cylinder 515 are aligned with the position to be fixed, and the mounting plate 511 is locked by the nut and the screw; 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, and 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 the nut; through the upper connecting rod 25 The second mounting plate 27 is fixed with the lower connecting rod 26, and at the same time, the stress on the upper support plate 21 and the lower support plate 22 is prevented from being directly transmitted to the second mounting plate 27; if the patient has multiple broken bones 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, and the adjacent upper support plate 21 and the lower support plate 22 are fixed by nuts and screws; thereby, the device can be adjusted according to the broken bone position and broken bone condition of the patient; during use, when the upper and lower ends of the broken bone of the patient are subjected to force, the force on the upper end is transmitted to the first mounting plate 11, the upper support plate 21, the support rod 23 and the first mounting plate 11 at the upper end, and is transmitted to the lower end of the patient through the first mounting plate 11, the steel ball 522, the movable sleeve 523, the fastening groove 524, the sleeve 514 and the bone needle 4 at the lower end; avoiding the stress from being directly transmitted to the bone needle 4 at the broken bone.

[0057] Embodiment 4

[0058] In some embodiments, 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 fixator, comprising the following steps:

[0059] Step 1: According to the fracture condition of the patient, assemble the device and select one or more sets of second mounting plates 27; if one set of second mounting plates 27 is selected, execute step 2; if multiple sets of second mounting plates 27 are selected, execute 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 grooves 33 and insert them, adjust the insertion depth according to the position and length of the broken bone of the patient, and align the connecting hole 13 with the second locking hole 35, and then lock the connecting rod 12 and the support rod 23 by means of 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 according to the positions to be fixed, and align the sleeve 514 and the limiting cylinder 515 with the positions to be fixed, and lock the mounting plates 511 by means of nuts and screws;

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

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

[0063] Step 5: Insert the bone needle 4 into the sleeve 514 and the limiting tube 515. The size of the bone needle 4 is smaller than that of the sleeve 514 and the limiting tube 515. The bone needle 4 is pre-positioned by the sleeve 514 and the limiting tube 515, and then the bone needle 4 is driven into the broken bone of the patient by the bone screw driver to fix the broken bone of the patient; after the driving is completed, move the movable sleeve 523 and the locking sleeve 525 to make the locking sleeve 525 threadedly connected with 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 to lock the bone needle 4.

[0064] The above embodiments are only used to illustrate the technical solutions of the present invention, rather than to limit the same. Although the present invention has been described in detail with reference to the aforementioned embodiments, those skilled in the art should understand that the technical solutions described in the aforementioned embodiments may still be modified, or some of the technical features may be replaced by equivalents. Such modifications or replacements 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 fixator, comprising two groups of end support frames (1) and a plurality of support group frames (2), Features: The end support frame (1) comprises a connecting rod (12), two first mounting plates (11) and a plurality of connecting holes (13); one end of the two first mounting plates (11) is hinged, and the other end of the first mounting plate (11) is detachably connected via a screw and a nut; a plurality of groups of mounting holes (14) are arranged in a circular array at equal intervals on the first mounting plate (11); a plurality of connecting rods (12) are evenly fixedly installed on the lower side of the first mounting plate (11) in a circular array; connecting holes (13) are arranged in equal intervals on the connecting rods (12); a plurality of support frame groups (2) are connected via a combination component (3); the connecting rods (12) and the support frame group (2) are connected via the combination component (3); and the support frame group (2) is located between the two groups of first mounting plates (11); a plurality of bone needle brackets (5) for fixing bone needles (4) are installed on the first mounting plate (11) and the support frame group (2); The bone needle bracket (5) comprises a fixing component (51) and a locking component (52); the fixing component (51) is detachably mounted on the first mounting plate (11) and the supporting frame (2) via a screw and a nut; and the locking component (52) is mounted on the fixing component (51).

2. The combined fracture external fixator according to claim 1, It is characterized in that The fixing assembly (51) comprises a mounting plate (511), a support plate (513) and a sleeve (514); a mounting hole (14) is provided on the mounting plate (511); the mounting plate (511) is detachably mounted on the first mounting plate (11) and the support assembly (2) via the mounting hole (14), a screw rod 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).

3. The combined fracture external fixator according to claim 2, It is characterized in that The fixing assembly (51) further comprises a limiting cylinder (515), the limiting cylinder (515) being fixedly mounted on the outer end of the sleeve (514), the inner diameter of the limiting cylinder (515) being consistent with the inner diameter of the sleeve (514), and the outer diameter of the limiting cylinder (515) being smaller than the outer diameter of the sleeve (514); the bone needle (4) is connected to the sleeve (514) and the limiting cylinder (515) in a limiting sliding manner.

4. The combined fracture external fixator according to claim 3, It is characterized in that The locking assembly (52) comprises a movable groove (521), a steel ball (522), a movable sleeve (523), a fastening groove (524) and a locking sleeve (525); a plurality of movable grooves (521) are provided on the sleeve (514) in a circumferential array, and a steel ball (522) is arranged in the movable groove (521); the movable sleeve (523) is connected to the sleeve (514) in a limited sliding manner; a fastening groove (524) is provided on a side of the movable sleeve (523) close to the steel ball (522); the locking sleeve (525) is connected to the limited sliding manner with 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).

5. The combined fracture external fixator according to claim 4, It is characterized in that The fastening groove (524) is configured to be in the shape of a truncated cone with a larger outer portion and a smaller inner portion.

6. The combined fracture external fixator according to claim 5, It is characterized in that The support assembly frame (2) comprises an upper support plate (21), a lower support plate (22), a support rod (23), a round rod (24) and a mounting assembly, wherein the round rod (24) is fixedly mounted on the lower end of the support rod (23); 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); a plurality of support rods (23) are provided, and the plurality of support rods (23) are evenly distributed in a circular array at equal intervals; and the mounting assembly is mounted between the upper support plate (21) and the lower support plate (22).

7. The combined fracture external fixator according to claim 6, It is characterized in that The mounting assembly comprises 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) are hinged on the second mounting plate (27); 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); a plurality of upper connecting rods (25) are provided, and the plurality of upper connecting rods (25) are evenly distributed in a circular array at equal intervals; a plurality of mounting holes (14) are evenly arranged in a circular 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 hinged at one end, and the other ends of the arc-shaped plates are detachably connected through nuts and screws.

8. The combined fracture external fixator according to claim 7, It is characterized in that The combined assembly (3) comprises an upper rod (31), a lower groove (32), a receiving groove (33) and a locking assembly; the upper rod (31) is fixedly mounted on the upper side of the upper support plate (21); the lower groove (32) is provided 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); adjacent upper rods (31) and lower grooves (32) are plugged in; the upper sides of the upper rod (31) and the support rod (23) are provided with a through receiving groove (33); the receiving groove (33) is communicated with the lower groove (32); and the receiving groove (33) is plugged in with the connecting rod (12).

9. The combined fracture external fixator according to claim 8, It is characterized in that The locking assembly comprises 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 accommodating groove (33); a plurality of second locking holes (35) are evenly provided on the supporting rod (23); and the spacing between the second locking holes (35) is consistent with the spacing between the connecting holes (13).

10. A method for using the combined fracture external fixator according to claim 9, It is characterized in that The following steps are involved: Step 1: according to the fracture condition of the patient, assemble the device and select one or more sets of second mounting plates (27); if one set of second mounting plates (27) is selected, execute step 2; if multiple sets of second mounting plates (27) are selected, execute step 3; Step 2: Align the connecting rods (12) on the two groups 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 position and length of the broken bone of the patient, and align the connecting hole (13) with the second locking hole (35), and then lock the connecting rod (12) and the support rod (23) by means of a screw and a nut; install the mounting plates (511) on the upper first mounting plate (11), the second mounting plate (27) and the lower first mounting plate (11) according to the positions to be fixed, and align the sleeve (514) and the limiting cylinder (515) with the positions to be fixed, and lock the mounting plates (511) by means of a nut and a screw; Step 3: After aligning the adjacent upper rods (31) and lower grooves (32), insert the upper rods (31) into the lower grooves (32), and fix the adjacent upper support plates (21) and lower support plates (22) by nuts and screws, so as 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 broken bone, and align the connecting hole (13) with the second locking hole (35), and then lock the connecting rod (12) and the support rod (23) by 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 positions to be fixed, and align the sleeve (514) and the limiting cylinder (515) with the positions to be fixed, and lock the mounting plates (511) by nuts and screws; Step 4: placing the fractured limb of the patient on the first mounting plate (11), the upper supporting plate (21), the lower supporting plate (22), and the second mounting plate (27), closing the first mounting plate (11), the upper supporting plate (21), the lower supporting plate (22), and the second mounting plate (27), and locking them with nuts; Step 5: insert the bone needle (4) into the sleeve (514) and the limiting tube (515), the size of the bone needle (4) is smaller than the sleeve (514) and the limiting tube (515), and the bone needle (4) is pre-positioned by the sleeve (514) and the limiting tube (515), and then the bone needle (4) is driven into the broken bone of the patient by the bone screw driver to fix the broken bone of the patient; after the driving is completed, move the movable sleeve (523) and the locking sleeve (525) so that the locking sleeve (525) is threadedly connected with 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) to lock the bone needle (4).

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