A bone injury auxiliary fixation device

Abstract

The present invention belongs to the technical field of medical devices, and specifically relates to a bone injury auxiliary fixation device, including an adjustable support frame, the adjustable support frame is provided with a fixing mechanism, the fixing mechanism includes two side plates, an opening handle is provided between the two side plates, the two side plates are provided with a vertical plate, the vertical plate is provided with a rack, the rack is provided with a push rod, a small gear is provided between the two side plates, front and rear ends of the small gear are provided with a coaxially arranged large gear, the two side plates on opposite sides are rotatably connected with a rotating plate through a third rotating shaft, the third rotating shaft is located directly below the second rotating shaft, the two rotating plates are slidably connected together with a gear rod meshing with the large gear, the present invention provides a bone injury auxiliary fixation device, the auxiliary fixation device can expand and fix muscle tissue during fracture surgery, so that medical staff do not need to apply force for a long time, which saves manpower and ensures that the separation space is not easy to change, thereby reducing the difficulty of the operation for the medical staff performing the operation.

Description

Technical Field

[0001] The invention belongs to the technical field of medical devices, and in particular relates to a bone injury auxiliary fixation device. Background Art

[0002] During the patient's fracture surgery, the bone needs to be separated from other muscle tissues, and then the muscle tissue is kept in a fixed state so that there is a separation space between the muscle tissue and the bone. Only after these operations are completed can subsequent surgical operations be performed. The traditional muscle fixation method is usually that medical staff pull the retractor to expand and separate the muscle tissue. Since medical staff apply force for a long time to keep it in an expanded state, the pulling force is easy to change, which makes the separation space between the bone and the tissue change accordingly, increasing the difficulty of the operation for the medical staff performing the operation. To address the above problems, we proposed a bone injury auxiliary fixation device. Summary of the invention

[0003] The purpose of the present invention is to provide a bone injury auxiliary fixation device to solve the problems existing in the background technology.

[0004] In order to achieve the above technical objectives, the technical solution adopted by the present invention is as follows:

[0005] The present invention belongs to the technical field of medical devices, and specifically relates to a bone injury auxiliary fixation device, comprising an adjustable support frame, the adjustable support frame is connected to a fixing mechanism, the fixing mechanism comprises two side plates distributed front and back, two spread handles are hingedly connected between the two side plates through a first rotating shaft, and the mass of the spread handle located at the lower side of the first rotating shaft is greater than the mass of the part located at the upper side of the first rotating shaft;

[0006] A vertical plate is fixedly connected between the two side plates, and a rack is longitudinally slidably connected to the vertical plate, and the rack has a first sliding groove matching the vertical plate. A push rod is fixedly connected to the lower end of the rack, and the left and right ends of the push rod are respectively in contact with the upper side of the spreading handle, so as to spread the two spreading handles into an X shape;

[0007] A small gear meshing with a rack is rotatably connected between the two side plates through a second rotating shaft, and a large gear coaxially arranged at both the front and rear ends of the small gear is provided, and the lower end of the vertical plate is flush with the lower end of the large gear;

[0008] The two side plates are rotatably connected to a rotating plate on one side through a third rotating shaft, and the third rotating shaft is located directly below the second rotating shaft. The two rotating plates are slidably connected to a gear rod meshing with the large gear, and the gear rod has a second sliding groove matching the rotating plate, and the middle part of the gear rod has a accommodating groove matching the rack, and the right end of the gear rod is connected to a handle, and the second sliding groove is located on the left side of the gear rod, and the mass of the left side of the gear rod is less than the mass of the right side of the gear rod.

[0009] The adjustable support frame includes a base plate, a vertical rod is fixedly connected to the upper end of the base plate, a slider is slidably connected to the vertical rod, the slider has a vertical sliding groove matching the vertical rod, the slider is horizontally slidably connected to the cross rod through a cross sliding groove, the two side plates are fixed to the ends of the cross rod, and the front and rear ends of the slider are both threadedly connected with fastening bolts, and the two fastening bolts are respectively used to fasten the vertical rod and the cross rod.

[0010] The upper end of the bottom plate is provided with six installation holes distributed in a rectangular shape, and the six installation holes are all countersunk holes.

[0011] The radius of the large gear is greater than that of the small gear, and the number of teeth of the large gear is greater than that of the small gear.

[0012] The lower ends of the two spreading handles are hinged with spreading plates through hinge seats. The spreading plates are in an arc shape. The hinge seats are fixed to one side of the protrusion of the spreading plates.

[0013] The handle is in the shape of a ring.

[0014] The thickness of the vertical plate is smaller than the gap between the teeth of the gear rod.

[0015] The rack and the push rod are an integrally formed structure.

[0016] The present invention provides a bone injury auxiliary fixation device, which can expand and fix muscle tissue during fracture surgery, thus eliminating the need for medical staff to apply force for a long time, saving manpower while ensuring that the separation space is not easily changed, thereby reducing the difficulty of the operation for medical staff performing the operation. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] The present invention is further illustrated by means of the non-limiting examples given in the accompanying drawings.

[0018] Figure 1 It is a structural schematic diagram of an embodiment of a bone injury auxiliary fixation device of the present invention;

[0019] Figure 2 for Figure 1 A schematic diagram of the structure enlargement at the center A;

[0020] Figure 3 It is a schematic diagram of a first partial cross-sectional structure of the present invention;

[0021] Figure 4 for Figure 3 A schematic diagram of the structure enlarged at B in the middle;

[0022] Figure 5 It is a partial cross-sectional structural schematic diagram of the fixing mechanism of the present invention;

[0023] Figure 6It is a schematic diagram of the connection between the slider and the fastening bolt of the present invention.

[0024] The main component symbols are described as follows:

[0025] Adjustable support frame 1, side plate 2, first rotating shaft 21, opening handle 22, vertical plate 3, rack 31, first slide groove 32, push rod 33, second rotating shaft 4, small gear 41, large gear 42, third rotating shaft 5, rotating plate 51, gear rod 52, second slide groove 53, accommodating groove 54, handle 55, bottom plate 6, vertical rod 61, slider 62, vertical slide groove 63, horizontal slide groove 64, cross rod 65, fastening bolt 66, mounting hole 67, hinged seat 7, opening plate 71. DETAILED DESCRIPTION

[0026] In order to enable those skilled in the art to better understand the present invention, the technical solution of the present invention is further described below in conjunction with the accompanying drawings and embodiments.

[0027] like Figure 1-6 As shown, a bone injury auxiliary fixation device of the present invention comprises an adjustable support frame 1, the adjustable support frame 1 is connected to a fixing mechanism, the fixing mechanism comprises two side plates 2 distributed front and back, two opening handles 22 are hingedly connected between the two side plates 2 through a first rotating shaft 21, the mass of the opening handle 22 located at the lower side of the first rotating shaft 21 is greater than the mass of the upper side of the first rotating shaft 21, a vertical plate 3 is fixed between the two side plates 2, the vertical plate 3 is longitudinally slidably connected to a rack 31, and the rack 31 has a matching with the vertical plate 3. The first slide groove 32 is matched, and a push rod 33 is fixedly connected to the lower end of the rack 31. The rack 31 and the push rod 33 are an integrally formed structure. Such a structure is stable, reliable, strong and durable. The left and right ends of the push rod 33 are respectively abutted against the upper side of the spreading handle 22, so that the two spreading handles 22 are spread into an X shape. A small gear 41 meshing with the rack 31 is rotatably connected between the two side plates 2 through the second rotating shaft 4, and a coaxial large gear 42 is provided at the front and rear ends of the small gear 41, and the lower end of the vertical plate 3 is flush with the lower end of the large gear 42.

[0028] The two side plates 2 are rotatably connected to a rotating plate 51 on one side through a third rotating shaft 5. The third rotating shaft 5 is located directly below the second rotating shaft 4. The two rotating plates 51 are slidably connected to a gear rod 52 meshing with the large gear 42. The gear rod 52 has a second slide groove 53 matching the rotating plate 51. The middle part of the gear rod 52 has a receiving groove 54 matching the rack 31. The right end of the gear rod 52 is connected to a handle 55. The shape of the handle 55 is annular. The annular handle 55 is convenient for medical staff to perform push and pull operations. The second slide groove 53 is located on the left side of the gear rod 52. The mass of the left side of the gear rod 52 is less than the mass of the right side of the gear rod 52. The thickness of the vertical plate 3 is less than the gap between the teeth of the gear rod 52.

[0029] The vertical plate 3 cooperates with the first sliding groove 32 to limit the rack 31, so that the rack 31 can only slide up and down. The rotating plate 51 cooperates with the second sliding groove 53 to limit the gear rod 52, so that the gear rod 52 can slide along the length direction of the rotating plate 51. Since the rotating plate 51 is rotatably connected with the side plate 2 through the third rotating shaft 5, the gear rod 52 can rotate around the third rotating shaft 5; since the third rotating shaft 5 is located directly below the second rotating shaft 4, the gear rod 52 can keep meshing with the large gear 42 when the gear rod 52 rotates around the third rotating shaft 5 by a certain angle. Under the action of gravity, the portion located at the lower side of the first rotating shaft 21 tends to fall downward, so that the upper portions of the two spreading handles 22 can maintain contact with the left and right ends of the push rod 33; since the masses of the left and right sides of the gear rod 52 are inconsistent, under the action of gravity, the right end of the gear rod 52 tends to fall downward, so that the left end of the gear rod 52 tends to tilt upward. Therefore, in a natural state, the left side of the gear rod 52 will cause one of the inter-tooth gaps to be engaged with the vertical plate 3 due to the above-mentioned tilting tendency, thereby limiting the gear rod 52 from sliding to the right.

[0030] When in use, the adjustable support frame 1 is first fixed on a bed or other object, and then the fixing mechanism is adjusted to a position convenient for stretching and fixing the muscle tissue through the adjustable support frame 1, and then the muscle tissue is stretched and fixed using the fixing mechanism. When fixing, the right side of the gear rod 52 is lifted by the handle 55, and the gear rod 52 is rotated a certain angle around the third rotating shaft 5. After the gear rod 52 and the vertical plate 3 are released from the clamping, the gear rod 52 is pulled to the upper right side, so that the gear rod 52 drives the small gear 41 to rotate counterclockwise through the large gear 42. When the small gear 41 rotates, it drives the rack 31 to move downward, and the rack 31 can prompt the push rod 33 to move downward. When the push rod 33 moves downward, it can prompt the two stretching handles 2 The lower side of the tooth bar 52 is opened to both sides, so that the two spreading handles 22 can expand the muscle tissue to both sides. After the muscle tissue expands to a suitable width, the right end of the tooth bar 52 is pressed downward to re-engage the tooth bar 52 with the vertical plate 3. Under the falling trend of the right end of the tooth bar 52, the tooth bar 52 can remain engaged with the vertical plate 3, so that the left and right sliding of the tooth bar 52 can be limited, and the spreading angle of the spreading handle 22 can be fixed to keep the muscle tissue in a fixed state. At this time, the separation space between the muscle tissue and the bone is fixed, so that the medical staff does not need to apply force for a long time, which saves manpower and ensures that the separation space is not easy to change, reducing the difficulty of the operation for the medical staff performing the operation. The operation of releasing the expansion of the muscle tissue is the same as the above operation, which will not be repeated here.

[0031] As can be seen from the above, during the operation of the fixing mechanism to open and fix the muscle tissue, the user only needs to operate the toothed rod 52 to slide and tilt through the handle 55. In addition, this operation method can quickly adjust the opening angle of the opening handle 22, which can improve the surgical efficiency to a certain extent, reduce the surgical time, and relieve the pain of the patient. The vertical plate 3 can not only connect and fix between the two side plates 2, but also limit the rack 31, and also limit the toothed rod 52. The design is very clever and can be said to kill two birds with one stone.

[0032] The adjustable support frame 1 includes a base plate 6, a vertical rod 61 is fixedly connected to the upper end of the base plate 6, and the vertical rod 61 is slidably connected to a slider 62. The slider 62 has a vertical slide groove 63 matching the vertical rod 61, and the slider 62 is slidably connected to the cross rod 65 through a cross slide groove 64. The two side plates 2 are fixed to the ends of the cross rod 65. The front and rear ends of the slider 62 are both threadedly connected with fastening bolts 66. The two fastening bolts 66 are respectively used to fasten the vertical rod 61 and the cross rod 65. The cross rod 65 slides left and right in the cross slide groove 64 to adjust the left and right position of the fixing mechanism, and the slider 62 slides up and down on the vertical rod 61 to adjust the left and right position of the fixing mechanism. Six rectangular mounting holes 67 are opened at the upper end of the base plate 6, and the six mounting holes 67 are all sink holes. The setting of the mounting holes 67 can be assembled with bolts to fix the entire device to a bed or other objects.

[0033] The radius of the large gear 42 is greater than the radius of the small gear 41, and the number of teeth of the large gear 42 is greater than the number of teeth of the small gear 41. Such a structure can reduce speed and increase distance, so that medical staff can save more effort when pulling the gear rod 52, thereby bringing convenience to the entire surgical operation. The lower ends of the two expansion handles 22 are hinged with expansion plates 71 through the hinge seat 7. The shape of the expansion plate 71 is arc-shaped. The hinge seat 7 is fixed to the raised side of the expansion plate 7. The setting of the expansion plate 71 can increase the contact area between the expansion handle 22 and the muscle tissue, so that the muscle tissue can be stably expanded.

[0034] The present invention provides a bone injury auxiliary fixation device, which can expand and fix muscle tissue during fracture surgery, thus eliminating the need for medical staff to apply force for a long time, saving manpower while ensuring that the separation space is not easily changed, thereby reducing the difficulty of the operation for medical staff performing the operation.

[0035] The above embodiments are merely illustrative of the principles and effects of the present invention, and are not intended to limit the present invention. Anyone familiar with the technology may modify or change the above embodiments without violating the spirit and scope of the present invention. Therefore, all equivalent modifications or changes made by those with ordinary knowledge in the technical field without departing from the spirit and technical ideas disclosed by the present invention should still be covered by the claims of the present invention.

Claims

1. A bone injury auxiliary fixation device, comprising an adjustable support frame, characterized in that: The adjustable support frame is connected to a fixing mechanism, the fixing mechanism includes two side plates distributed front and back, two opening handles are hinged between the two side plates through a first rotating shaft, and the mass of the opening handle located at the lower side of the first rotating shaft is greater than the mass of the opening handle located at the upper side of the first rotating shaft; A vertical plate is fixedly connected between the two side plates, and a rack is longitudinally slidably connected to the vertical plate, and the rack has a first sliding groove matching the vertical plate. A push rod is fixedly connected to the lower end of the rack, and the left and right ends of the push rod are respectively in contact with the upper side of the spreading handle, so as to spread the two spreading handles into an X shape; A small gear meshing with a rack is rotatably connected between the two side plates through a second rotating shaft, and a large gear coaxially arranged at both the front and rear ends of the small gear is provided, and the lower end of the vertical plate is flush with the lower end of the large gear; The two side plates are rotatably connected to a rotating plate on one side through a third rotating shaft, and the third rotating shaft is located directly below the second rotating shaft. The two rotating plates are slidably connected to a gear rod meshing with the large gear, and the gear rod has a second sliding groove matching the rotating plate, and the middle part of the gear rod has a accommodating groove matching the rack. A handle is connected to the right end of the gear rod, and the second sliding groove is located on the left side of the gear rod. The mass of the left side of the gear rod is less than the mass of the right side of the gear rod, and the thickness of the vertical plate is less than the gap between the teeth of the gear rod.

2. The bone injury auxiliary fixation device according to claim 1, characterized in that: The adjustable support frame includes a base plate, a vertical rod is fixedly connected to the upper end of the base plate, a slider is slidably connected to the vertical rod, the slider has a vertical sliding groove matching the vertical rod, the slider is horizontally slidably connected to the cross rod through a cross sliding groove, the two side plates are fixed to the ends of the cross rod, and the front and rear ends of the slider are both threadedly connected with fastening bolts, and the two fastening bolts are respectively used to fasten the vertical rod and the cross rod.

3. The bone injury auxiliary fixation device according to claim 2, characterized in that: The upper end of the bottom plate is provided with six installation holes distributed in a rectangular shape, and the six installation holes are all countersunk holes.

4. The bone injury auxiliary fixation device according to claim 1, characterized in that: The radius of the large gear is greater than that of the small gear, and the number of teeth of the large gear is greater than that of the small gear.

5. The bone injury auxiliary fixation device according to claim 1, characterized in that: The lower ends of the two spreading handles are hinged with spreading plates through hinge seats. The spreading plates are in an arc shape. The hinge seats are fixed to one side of the protrusion of the spreading plates.

6. The bone injury auxiliary fixation device according to claim 1, characterized in that: The handle is in the shape of a ring.

7. The bone injury auxiliary fixation device according to claim 1, characterized in that: The rack and the push rod are an integrally formed structure.

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