Splint for external fixation of long bone fracture and knee joint rehabilitation assist device

Abstract

The utility model relates to the technical field of medical instruments, in particular to a splint for long bone fracture external fixation and a knee joint rehabilitation assistor, the splint for long bone fracture external fixation comprises a chain plate, a connecting plate, an adjusting knob, a traction rope and a locking mechanism, the first end of the connecting plate is connected with the first end of the chain plate, and the second end of the connecting plate is provided with a guide groove; the second end of the chain plate is provided with a guide protrusion arranged in the guide groove in a sliding mode. The connecting plate and the chain plate define an annular structure used for being arranged on the outer side of the limb of the long bone in a sleeving mode, the adjusting knob is rotationally connected to the connecting plate, the first end of the traction rope is connected with the guide protrusion, the second end of the traction rope is wound around the peripheral side of the adjusting knob, and the traction rope can pull the guide protrusion to move in the direction close to the first end of the chain plate by rotating the adjusting knob. The locking mechanism is used for fixing the adjusting knob, so that the annular structure can be kept in a clamping state, and external fixation of the clamping plate can be carried out quickly and smoothly.

Description

Technical Field

[0001] The utility model relates to the technical field of medical equipment, in particular to a splint for external fixation of long bone fractures and a knee joint rehabilitation aid. Background Art

[0002] Splinting is a long-term method for treating long bone fractures. The purpose of splinting is mainly to stabilize the fracture ends, help patients brake, relieve pain, and maintain functional posture under relatively static conditions. However, when splinting, multiple strips of plates need to be tied to the outside of the limbs with straps. When tying the strips, if the straps are loose, the fractures are prone to re-displacement; if the strapping force is tight, compression, ischemia, skin ulceration, etc. may occur. Therefore, it is necessary to flexibly control the strength of the strapping. In addition, during the patient's recovery process, if the limbs swell, it is necessary to loosen the straps appropriately and adjust the strapping force. It is not easy to accurately control the strapping force when tying the straps, which is not conducive to the rapid and smooth progress of splint external fixation. Utility Model Content

[0003] The technical problem to be solved by the utility model is that when splint fixation is used to treat long bone fractures, it is difficult to accurately control the binding force of the binding belt, which is not conducive to the rapid and smooth implementation of the splint external fixation.

[0004] In order to solve the above technical problems, the purpose of the utility model is to provide a splint for external fixation of long bone fractures, comprising:

[0005] A chain plate, the chain plate comprising a plurality of strip-shaped plate bodies hinged in sequence;

[0006] A connecting plate, wherein the first end of the connecting plate is connected to the first end of the chain plate, the second end of the connecting plate is provided with a guide groove, the second end of the chain plate is provided with a guide protrusion, and the guide protrusion is slidably arranged in the guide groove; the connecting plate and the chain plate form an annular structure, and the annular structure is used to be sleeved on the outside of a limb with a long bone;

[0007] An adjusting knob, the adjusting knob being rotatably connected to the connecting plate;

[0008] A pulling rope, wherein the first end of the pulling rope is connected to the guide protrusion, and the second end of the pulling rope is wound around the adjusting knob, and the adjusting knob is rotated to increase the length of the pulling rope wound around the outer side of the adjusting knob, so that the pulling rope pulls the guide protrusion to move toward the first end of the chain plate, so that the annular structure clamps the limb;

[0009] A locking mechanism is provided on the connecting plate and is used to fix the adjusting knob.

[0010] As a preferred embodiment, the locking mechanism includes a fixing cylinder and a locking screw. The fixing cylinder is sleeved on the outside of the adjusting knob and fixed to the connecting plate. The cylinder wall of the fixing cylinder is provided with a threaded hole. The locking screw is installed in the threaded hole. Rotating the locking screw can make the threaded end of the screw abut against the outer peripheral side of the adjusting knob to fix the adjusting knob.

[0011] As a preferred embodiment, the second end of the pulling rope is wound around the outer side of the lower end of the adjusting knob; a plurality of limiting grooves are arranged around the middle part of the outer side of the adjusting knob, and rotating the locking screw can make the threaded end of the locking screw extend into the limiting groove or come out of the limiting groove.

[0012] As a preferred embodiment, a plurality of first positioning marks are provided at the upper end of the adjusting knob, each of the positioning marks is arranged opposite to and one-to-one with each of the limiting grooves, and a second positioning mark is provided at the top of the fixing tube and is arranged opposite to the locking screw.

[0013] As a preferred solution, an annular flange portion is provided in the middle of the adjusting knob, and each of the limiting grooves is arranged on the outer side of the annular flange portion.

[0014] As a preferred solution, the first end of the connecting plate is hinged to the first end of the chain plate.

[0015] As a preferred solution, the first end of the connecting plate is detachably connected to the first end of the chain plate.

[0016] A knee joint rehabilitation aid comprises a connecting frame, wherein the upper and lower ends of the connecting frame are both connected to the above-mentioned long bone fracture external fixation splint, the long bone fracture external fixation splint connected to the upper end of the connecting frame is a first splint, and the long bone fracture external fixation splint connected to the lower end of the connecting frame is a second splint, the first splint is used to be clamped on the outer side of the thigh, and the second splint is used to be clamped on the outer side of the calf.

[0017] As a preferred embodiment, the connecting frame includes a first plate body, a second plate body and a threaded telescopic rod, the first end of the first plate body and the first end of the second plate body are hinged, the second end of the first plate body is connected to the connecting plate of the first clamping plate, the second end of the second plate body is connected to the connecting plate of the second clamping plate, the first end of the threaded telescopic rod is hinged to the middle part of the first plate body, and the second end of the threaded telescopic rod is hinged to the middle part of the second plate body.

[0018] As a preferred embodiment, a first protrusion is provided on the side of the chain plate of the first plate away from the first clamping plate, and the first end of the threaded telescopic rod is hinged on the first protrusion; a second protrusion is provided on the side of the chain plate of the second plate away from the second clamping plate, and the second end of the threaded telescopic rod is hinged on the second protrusion.

[0019] Compared with the prior art, the beneficial effects of the utility model are:

[0020] The utility model discloses a splint for external fixation of long bone fracture, comprising a chain plate, a connecting plate, an adjusting knob, a pulling rope and a locking mechanism, wherein the first end of the connecting plate is connected to the first end of the chain plate, the second end of the connecting plate is provided with a guide groove, the second end of the chain plate is provided with a guide protrusion, and the guide protrusion is slidably arranged in the guide groove; the connecting plate and the chain plate form an annular structure, the annular structure is used to be sleeved on the outer side of the limb of the long bone, the adjusting knob is rotatably connected to the connecting plate, the first end of the pulling rope is connected to the guide protrusion, and the second end of the pulling rope is wound around the adjusting knob, and the rotating adjusting knob can increase the length of the pulling rope wound around the outer side of the adjusting knob, so that the pulling rope pulls the guide protrusion to move in the direction close to the first end of the chain plate, thereby reducing the annular structure, so that the annular structure clamps the limb, and after the annular structure clamps the limb, the locking mechanism is used to fix the adjusting knob to keep the annular structure in a clamped state; therefore, the utility model discloses a splint for external fixation of long bone fracture, the clamping degree of the annular structure on the limb can be accurately adjusted by rotating the adjusting knob, so as to facilitate the rapid and smooth external fixation of the splint. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] Figure 1 The isometric view of the splint for external fixation of long bone fractures of the utility model after the connection plate is cut;

[0022] Figure 2 An axonometric view of the splint for external fixation of long bone fractures of the utility model after the connecting plate is hidden;

[0023] Figure 3 It is a first complete axonometric view of the splint for external fixation of long bone fractures of the utility model;

[0024] Figure 4 for Figure 3 A partial enlarged view of the middle part;

[0025] Figure 5 It is a second complete axonometric view of the splint for external fixation of long bone fractures of the utility model;

[0026] Figure 6 for Figure 5 A partial enlarged view of point B in the middle;

[0027] Figure 7 is a structural schematic diagram of the connecting plate;

[0028] Figure 8 This is an axonometric diagram of the knee joint rehabilitation aid of the utility model;

[0029] In the figure, 1, chain plate, 11, strip plate body, 111, guide protrusion, 2, connecting plate, 21, guide groove, 3, adjusting knob, 31, annular flange portion, 311, limiting groove, 32, first positioning mark, 4, pulling rope, 51, fixing tube, 511, second positioning mark, 52, locking screw, 6, connecting frame, 61, first plate body, 611, first protrusion portion, 62, second plate body, 621, second protrusion portion, 63, threaded telescopic rod. DETAILED DESCRIPTION

[0030] The following is a further detailed description of the specific implementation of the present invention in conjunction with the accompanying drawings and examples. The following examples are used to illustrate the present invention, but are not intended to limit the scope of the present invention.

[0031] In the description of the present utility model, it should be understood that the terms "upper", "lower", "left", "right", "top", "bottom", etc. indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings, and are only for the convenience of describing the present utility model and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation on the present utility model. It should be understood that the terms "first", "second", etc. are used in the present utility model to describe various information, but such information should not be limited to these terms, which are only used to distinguish the same type of information from each other. For example, without departing from the scope of the present utility model, the "first" information may also be referred to as the "second" information, and similarly, the "second" information may also be referred to as the "first" information.

[0032] like Figures 1 to 7 As shown, the preferred embodiment of the splint for external fixation of long bone fractures of the utility model comprises:

[0033] The chain plate 1 comprises a plurality of strip-shaped plate bodies 11 which are hinged in sequence;

[0034] A connecting plate 2, wherein the first end of the connecting plate 2 is connected to the first end of the chain plate 1, the second end of the connecting plate 2 is provided with a guide groove 21, the second end of the chain plate 1 is provided with a guide protrusion 111, and the guide protrusion 111 is slidably arranged in the guide groove 21; the connecting plate 2 and the chain plate 1 form an annular structure, and the annular structure is used to be sleeved on the outside of the limb of the long bone;

[0035] An adjusting knob 3, wherein the adjusting knob 3 is rotatably connected to the connecting plate 2;

[0036] A pulling rope 4, wherein the first end of the pulling rope 4 is connected to the guide protrusion 111, and the second end of the pulling rope 4 is wound around the peripheral side of the adjusting knob. The adjusting knob is rotated to increase the length of the pulling rope 4 wound around the outer side of the adjusting knob, so that the pulling rope 4 pulls the guide protrusion 111 to move toward the first end of the chain plate 1, so that the annular structure clamps the limb;

[0037] The locking mechanism is arranged on the connecting plate 2 and is used to fix the adjusting knob 3 .

[0038] Specifically, in the splint for external fixation of long bone fractures of the utility model, the adjusting knob 3 plays the role of retracting the traction rope 4. By rotating the adjusting knob 3, the winding length of the strip traction rope 4 on the outside of the adjusting knob 3 can be adjusted, thereby adjusting the size of the annular cavity of the annular structure surrounded by the chain plate 1 and the connecting plate 2, thereby adjusting the clamping degree of the annular structure on the limb. When it is necessary to increase or decrease the clamping degree of the annular structure on the limb, it is only necessary to rotate the adjusting knob 3. After the knob adjustment is completed, the adjusting knob 3 is fixed with the locking mechanism, so that the annular structure can maintain the desired clamping state on the limb, thereby facilitating the rapid and smooth external fixation of the splint.

[0039] Among them, the locking mechanism includes a fixing cylinder 51 and a locking screw 52. The fixing cylinder 51 is sleeved on the outside of the adjusting knob 3 and fixed to the connecting plate 2. The cylinder wall of the fixing cylinder 51 is provided with a threaded hole, and the locking screw 52 is installed in the threaded hole. Rotating the locking screw 52 can make the threaded end of the screw abut against the outer peripheral side of the adjusting knob to fix the adjusting knob 3.

[0040] In order to further improve the locking degree of the locking screw 52 on the adjusting knob 3, in this embodiment, the second end of the pulling rope 4 is wound around the outer side of the lower end of the adjusting knob 3; a plurality of limiting grooves 311 are surrounded by the middle part of the outer side of the adjusting knob 3, and rotating the locking screw 52 can make the threaded end of the locking screw 52 extend into the limiting groove 311 or come out of the limiting groove 311.

[0041] To ensure that the locking screw 52 can be exactly opposite to a certain limiting groove 311 after the adjusting knob 3 is rotated, in this embodiment, a plurality of first positioning marks 32 are provided at the upper end of the adjusting knob 3, and each positioning mark is opposite to each limiting groove 311 and is arranged one by one, and a second positioning mark 511 is provided at the top of the fixing tube 51 and is arranged opposite to the locking screw 52.

[0042] In this embodiment, an annular flange portion 31 is provided in the middle of the adjusting knob 3, and each limiting groove 311 is arranged on the outside of the annular flange portion 31. Specifically, the outer diameter of the annular flange is larger than the outer diameter of the adjusting knob 3, and the circumference of the annular flange is longer. Arranging each limiting groove 311 on the outside of the annular flange can make the mounting surface of each limiting protrusion longer, which is conducive to increasing the number of setting the limiting grooves 311.

[0043] In this embodiment, the first end of the connecting plate 2 is hinged to the first end of the chain plate 1. In order to facilitate the installation of the splint for external fixation of long bone fractures on the outside of the limb, in this embodiment, the first end of the connecting plate 2 is detachably connected to the first end of the chain plate 1. Specifically, when installing the splint for external fixation of long bone fractures, the first end of the chain plate 1 is disconnected from the first end of the connecting plate 2, and after the chain plate 1 is wrapped around the outside of the limb, the first end of the chain plate 1 is connected to the first end of the connecting plate 2 to form a ring structure. In this embodiment, the strip plate body 11 located at the first end of the chain plate 1 is provided with a first mounting hole, the first end of the first connecting plate 2 is provided with a second mounting hole, and the rotating shaft is penetrated in the first mounting hole and the second mounting hole, so that the first end of the connecting plate 2 is hinged to the first end of the chain plate 1; wherein, the chain plate 1 and the connecting plate 2 can be detachably connected by inserting the first rotating shaft in the first mounting hole. Specifically, the first rotating shaft can be detachably inserted in the first mounting hole in a manner that threadedly connected fixing screws are connected to the two end ports of the first mounting hole. By removing a fixing screw, the rotating shaft can be removed from the first mounting hole, thereby realizing the disassembly of the connecting plate 2 and the chain plate 1.

[0044] like Figure 8 As shown, an embodiment of a knee joint rehabilitation aid includes a connecting frame 6, and the upper and lower ends of the connecting frame 6 are both connected with the above-mentioned long bone fracture external fixation splints. The long bone fracture external fixation splint connected to the upper end of the connecting frame 6 is set as the first splint, and the long bone fracture external fixation splint connected to the lower end of the connecting frame 6 is set as the second splint. The first splint is used to be clamped on the outer side of the thigh, and the second splint is used to be clamped on the outer side of the calf.

[0045] In order to adjust the angle of the knee joint, the connecting frame 6 includes a first plate body 61, a second plate body 62 and a threaded telescopic rod 63. The first end of the first plate body 61 and the first end of the second plate body 62 are hinged, the second end of the first plate body 61 is connected to the connecting plate 2 of the first splint, the second end of the second plate body 62 is connected to the connecting plate 2 of the second splint, the first end of the threaded telescopic rod 63 is hinged to the middle part of the first plate body 61, and the second end of the threaded telescopic rod 63 is hinged to the middle part of the second plate body 62. Specifically, a first protrusion 611 is provided on the side of the first plate body 61 away from the chain plate 1 of the first splint, the first end of the threaded telescopic rod 63 is hinged on the first protrusion 611, the second plate body is provided on the side of the chain plate 1 of the second splint away from the second splint, and the second end of the threaded telescopic rod 63 is hinged on the second protrusion 621.

[0046] The arrangement of the first protrusion 611 and the second protrusion 621 enables the first plate body 61 and the second plate body 62 to be shaped into a 180° state when the threaded telescopic rod 63 is extended, thereby increasing the adjustment range of the knee joint angle.

[0047] Among them, the threaded telescopic rod 63 includes a first screw, a second screw and a screw sleeve. The thread rotation directions of the first screw and the second screw are opposite. The first end of the first screw is threadedly connected to the first end of the screw sleeve, the second end of the first screw is hinged to the first protrusion 611, the first end of the second screw is hinged to the second end of the screw sleeve, and the second end of the second screw is hinged to the second protrusion 621. By rotating the screw sleeve, the length of the threaded telescopic rod 63 can be adjusted.

[0048] In summary, the splint for external fixation of long bone fractures of the utility model comprises a chain plate 1, a connecting plate 2, an adjusting knob 3, a pulling rope 4 and a locking mechanism, wherein the first end of the connecting plate 2 is connected to the first end of the chain plate 1, the second end of the connecting plate 2 is provided with a guide groove 21, the second end of the chain plate 1 is provided with a guide protrusion 111, and the guide protrusion 111 is slidably arranged in the guide groove 21; the connecting plate 2 and the chain plate 1 form an annular structure, and the annular structure is used to be sleeved on the outside of the limb of the long bone, the adjusting knob 3 is rotatably connected to the connecting plate 2, the first end of the pulling rope 4 is connected to the guide protrusion 111, and the pulling rope 4 is provided with a guide protrusion 111. The second end is wound around the circumference of the adjusting knob, and rotating the adjusting knob can increase the length of the pulling rope 4 wound around the outside of the adjusting knob, so that the pulling rope 4 pulls the guide protrusion 111 to move toward the first end of the chain plate 1, thereby shrinking the annular structure, so that the annular structure clamps the limb. After the annular structure clamps the limb, the locking mechanism is used to fix the adjusting knob 3 to maintain the clamping state; therefore, the splint for external fixation of long bone fractures of the utility model can accurately adjust the degree of clamping of the annular structure on the limb by rotating the adjusting knob 3, so as to facilitate the rapid and smooth external fixation of the splint.

[0049] The above is only a preferred embodiment of the present invention. It should be pointed out that for ordinary technicians in this technical field, several improvements and substitutions can be made without departing from the technical principle of the present invention. These improvements and substitutions should also be regarded as the protection scope of the present invention.

Claims

1. A splint for external fixation of long bone fractures, characterized in that: include: A chain plate (1), the chain plate (1) comprising a plurality of strip-shaped plate bodies (11) hinged in sequence; A connecting plate (2), wherein the first end of the connecting plate (2) is connected to the first end of the chain plate (1), the second end of the connecting plate (2) is provided with a guide groove (21), the second end of the chain plate (1) is provided with a guide protrusion (111), and the guide protrusion (111) is slidably arranged in the guide groove (21); the connecting plate (2) and the chain plate (1) form an annular structure, and the annular structure is used to be sleeved on the outside of a limb with long bones; An adjusting knob (3), the adjusting knob (3) being rotatably connected to the connecting plate (2); A pulling rope (4), wherein a first end of the pulling rope (4) is connected to the guide protrusion (111), and a second end of the pulling rope (4) is wound around the peripheral side of the adjusting knob (3); A locking mechanism, wherein the locking mechanism is arranged on the connecting plate (2) and is used to fix the adjusting knob (3).

2. The splint for external fixation of long bone fractures according to claim 1, characterized in that: The locking mechanism comprises a fixing cylinder (51) and a locking screw (52); the fixing cylinder (51) is sleeved on the outside of the adjusting knob (3) and fixed to the connecting plate (2); a threaded hole is provided on the cylinder wall of the fixing cylinder (51); the locking screw (52) is installed in the threaded hole; the locking screw (52) is rotated so that the threaded end of the screw abuts against the outer peripheral side of the adjusting knob (3) to fix the adjusting knob (3).

3. The splint for external fixation of long bone fractures according to claim 2, characterized in that: The second end of the pulling rope (4) is wound around the outer side of the lower end of the adjusting knob (3); a plurality of limiting grooves (311) are arranged around the middle of the outer side of the adjusting knob (3); and the threaded end of the locking screw (52) can be extended into the limiting groove (311) or removed from the limiting groove (311) by rotating the locking screw (52).

4. The splint for external fixation of long bone fractures according to claim 3, characterized in that: A plurality of first positioning marks (32) are provided at the upper end of the adjusting knob (3), each of the positioning marks being arranged vertically opposite to each of the limiting grooves (311) and corresponding to each other, and a second positioning mark (511) is provided at the top of the fixing cylinder (51) and is arranged vertically opposite to the locking screw (52).

5. The splint for external fixation of long bone fractures according to claim 3, characterized in that: An annular flange portion (31) is provided in the middle of the adjusting knob (3), and each of the limiting grooves (311) is arranged on the outside of the annular flange portion (31).

6. The splint for external fixation of long bone fractures according to claim 1, characterized in that: The first end of the connecting plate (2) is hinged to the first end of the chain plate (1).

7. The splint for external fixation of long bone fractures according to claim 1, characterized in that: The first end of the connecting plate (2) is detachably connected to the first end of the chain plate (1).

8. A knee joint rehabilitation aid, characterized in that: It comprises a connecting frame (6), the upper end and the lower end of which are both connected to the splint for external fixation of long bone fractures according to any one of claims 1 to 7, the splint for external fixation of long bone fractures connected to the upper end of the connecting frame (6) is a first splint, and the splint for external fixation of long bone fractures connected to the lower end of the connecting frame (6) is a second splint, the first splint is used to be clamped on the outer side of the thigh, and the second splint is used to be clamped on the outer side of the calf.

9. The knee joint rehabilitation aid according to claim 8, characterized in that: The connecting frame (6) comprises a first plate body (61), a second plate body (62) and a threaded telescopic rod (63); the first end of the first plate body (61) and the first end of the second plate body (62) are hingedly connected; the second end of the first plate body (61) is connected to the connecting plate (2) of the first clamping plate; the second end of the second plate body (62) is connected to the connecting plate (2) of the second clamping plate; the first end of the threaded telescopic rod (63) is hingedly connected to the middle part of the first plate body (61); and the second end of the threaded telescopic rod (63) is hingedly connected to the middle part of the second plate body (62).

10. The knee joint rehabilitation aid according to claim 9, characterized in that: A first protrusion (611) is provided on the side of the first plate body (61) facing away from the chain plate (1) of the first clamping plate, and the first end of the threaded telescopic rod (63) is hinged on the first protrusion (611); a second protrusion (621) is provided on the side of the second plate body (61) facing away from the chain plate (1) of the second clamping plate, and the second end of the threaded telescopic rod (63) is hinged on the second protrusion (621).

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