Fixing device for osteoporotic fracture

Abstract

The invention discloses a fixing device for osteoporotic fracture, which comprises a tightening mechanism and a mounting mechanism, the tightening mechanism comprises a fixing plate and a fixing cylinder, the fixing cylinder is welded on the left side of the fixing plate, and a plurality of partition plates are uniformly welded in the fixing cylinder. According to the fixing device for the osteoporotic fracture, stable fixation is provided for the osteoporotic fracture part through the tightening mechanism, the loosening problem caused by infirm fixation is avoided, fracture healing is facilitated, the ratchet wheel is installed on the outer ring of the rotating shaft to be matched with the pawl, and the fixing stability is further guaranteed; the fixing effect is prevented from being affected by loosening of the lacing rope caused by reverse rotation of the rotating shaft, the fracture position of the leg of a patient can be conveniently installed and fixed through the installation mechanism when the leg of the patient is fractured and the leg is inconvenient to lift, operation of medical staff is facilitated, and through cooperative use of a ratchet wheel and a pawl, the fixing stability is guaranteed, and meanwhile the fixing effect is improved. And the fixing device can be conveniently and quickly loosened in emergency, so that the safety of the patient is guaranteed.

Description

Technical Field

[0001] The present invention relates to the field of fracture fixation, in particular to a fixation device for osteoporotic fractures. Background Art

[0002] In clinical medicine, osteoporotic fractures are a common condition that is relatively difficult to treat. Due to decreased bone mass and disrupted bone microstructure, osteoporotic patients experience increased bone brittleness, leading to fractures even with minimal external force. Following a fracture, a fixation device is needed to stabilize and fix the fracture site to promote healing and restore the bone's normal structure and function. Currently, there are many different types of fracture fixation devices on the market, which can achieve a certain degree of fixation. However, osteoporotic fractures present unique characteristics, and the mechanical properties of the patient's bones differ significantly from those of normal bones, placing higher demands on the fixation effectiveness and stability of the fixation device. Conventional fixation devices often fail to fully account for these characteristics of osteoporotic bones during design, resulting in insecure fixation and loosening in practice. For example, during daily activities, the fixation device may become loose due to slight bone displacement, making it unable to maintain the stability of the fracture site. This can affect the normal healing process, prolong the patient's recovery time, and even lead to serious consequences such as poor fracture healing and malunion.

[0003] In addition to the issues of fixation effect and stability, individual differences among patients with osteoporotic fractures are also a factor that cannot be ignored. There are great differences in age, gender, physical condition, fracture site and degree of fracture among different patients. For example, elderly patients have lower physical functions, poor skin elasticity and poor blood circulation, so they have higher requirements for the comfort and breathability of the fixation device. However, existing fixation devices often have limitations in adjustability and can usually only perform limited size adjustments, which makes it difficult to meet the diverse needs of different patients. For example, the size specifications of some fixation devices are relatively fixed and cannot be flexibly adjusted according to the degree of swelling at the fracture site, the thickness of the limbs, etc., resulting in over-tight fixation that may affect blood circulation and cause local tissue ischemia and necrosis. Over-loose fixation cannot provide sufficient fixation force and cannot effectively fix the fracture site. In order to solve the above problems, we propose a fixation device for osteoporotic fractures. Summary of the Invention

[0004] The purpose of the present invention is to provide a fixation device for osteoporotic fractures in order to address the deficiencies of the prior art and solve the problems raised in the background art.

[0005] To achieve the above-mentioned objectives, the present invention provides the following technical solutions: a fixation device for osteoporotic fractures, comprising a tightening mechanism and an installation mechanism, the tightening mechanism comprising a fixing plate and a fixing tube, the fixing tube being welded to the left side of the fixing plate, the interior of the fixing tube being evenly welded with multiple partitions, the top of the fixing tube being rotatably connected to a rotating shaft passing through multiple partitions, the installation mechanism comprising a first connecting plate and a second connecting plate, the first connecting plate and the second connecting plate being assembled together by a clamping plate, an adjustment plate being provided between the first connecting plate and the second connecting plate and the fixing plate, a plurality of connecting rods being welded on the side of the first connecting plate and the second connecting plate away from each other, the other end of the connecting rod being fixedly installed with a tightening rope passing through the adjustment plate and extending to the interior of the fixing tube.

[0006] As a preferred technical solution of the present invention, multiple tightening ropes pass through and extend to one end of the inside of the fixed cylinder and are respectively wound around multiple areas of the rotating shaft separated by partitions, and the tightening ropes on the front and the tightening ropes on the back are wound around the outer ring of the rotating shaft in opposite directions.

[0007] As a preferred technical solution of the present invention, a cavity is opened in the upper part of the fixed cylinder, and the outer ring of the rotating shaft located in the cavity opened in the upper part of the fixed cylinder is installed with a ratchet, and the top inner wall and the bottom inner wall of the cavity opened in the upper part of the fixed cylinder are rotatably connected with a pawl, and the pawl matches the ratchet.

[0008] As a preferred technical solution of the present invention, a V-shaped spring sheet is installed on the inner wall of one side of the cavity opened in the upper part of the fixed cylinder, and the other side of the V-shaped spring sheet is fixedly connected to one side of the pawl. The pawl is located on the side where the V-shaped spring sheet is installed and a shift rod is installed. A through hole is opened on one side of the fixed cylinder and extends through and into the cavity in the upper part of the fixed cylinder, and the shift rod moves in the through hole.

[0009] As a preferred technical solution of the present invention, the top of the rotating shaft passes through and extends to the upper part of the fixed cylinder, and a rotating plate is installed at one end of the rotating shaft located at the upper part of the fixed cylinder, and the bottom end of the rotating shaft is rotatably connected to the bottom inner wall of the fixed cylinder.

[0010] As a preferred technical solution of the present invention, a plurality of support blocks are welded on both sides of the fixing tube, and a through hole for a tightening rope to pass through is opened on one side of the support block. The tightening rope can be made of cow tendon rope.

[0011] As a preferred technical solution of the present invention, a cavity is provided on one side of the second connecting plate close to the first connecting plate, and a movable plate that passes through and extends to the top of the second connecting plate can be slidably connected in the cavity through a sliding groove and a slider, and a support plate is welded to one side wall of the second connecting plate.

[0012] As a preferred technical solution of the present invention, multiple groups of cavities are evenly opened on the second connecting plate and located on the side of the movable plate away from the first connecting plate, and movable plates are arranged in the cavities, and one side of the movable plate is welded to the side wall of the movable plate away from the first connecting plate.

[0013] As a preferred technical solution of the present invention, the bottom inner walls of the multiple groups of cavities opened on the second connecting plate are welded with guide rods that pass through the movable plate, and the bottom surface of the movable plate is fixedly installed with a telescopic spring surrounding the outer ring of the guide rod, and the bottom end of the telescopic spring is connected to the bottom inner wall of the cavity opened on the second connecting plate.

[0014] As a preferred technical solution of the present invention, there are multiple card plates, and the multiple card plates are respectively welded on the side of the movable plate away from the moving plate. One side of the first connecting plate is provided with multiple card slots for the card plates to be inserted, and the top inner wall of the card slot is provided with a limiting groove matching the card plate.

[0015] Compared with the prior art, the present invention provides a fixation device for osteoporotic fractures, which has the following beneficial effects:

[0016] 1. This fixation device for osteoporotic fractures passes through and extends one end of multiple tightening ropes to the inside of the fixing tube and is respectively wound around multiple areas of the rotating shaft separated by partitions, and the front and back tightening ropes are wound around the outer ring of the rotating shaft in opposite directions. When the rotating shaft is rotated, the tightening ropes can be tightened more evenly and stably, so that the first connecting plate and the second connecting plate are moved closer to the fixing plate, providing stable fixation for the osteoporotic fracture site, avoiding loosening caused by loose fixation, and facilitating fracture healing.

[0017] 2. This fixation device for osteoporotic fractures has a ratchet installed on the outer ring of the rotating shaft, which cooperates with a pawl that is rotatably connected in the upper cavity of the fixed cylinder. Under the action of a V-shaped spring sheet, the pawl is always engaged with the ratchet to prevent the rotating shaft from reversing, further ensuring the stability of the fixation and preventing the tightening rope from loosening due to the reversal of the rotating shaft, which affects the fixation effect.

[0018] 3. This fixation device for osteoporotic fractures slides in the cavity through the sliding groove and the slider on the second connecting plate, and the clamping plate welded on the movable plate can be inserted into the clamping groove on the first connecting plate, and the limiting groove on the inner wall of the top of the clamping groove matches the clamping plate. This structure facilitates the assembly and disassembly of the first connecting plate and the second connecting plate, and is convenient for medical staff to operate. It is also convenient for installation according to the patient's leg fracture, for example, when the leg is inconvenient to lift, to fix the patient's leg fracture.

[0019] 4. This fixation device for osteoporotic fractures has a rotating plate installed on the top of the rotating shaft, which makes it convenient for medical staff to drive the rotating shaft to rotate by rotating the rotating plate, thereby tightening or loosening the tightening rope. The operation is simple and easy. At the same time, a lever is installed on the pawl, and a through hole is opened on one side of the fixing cylinder for the lever to move. When the fixation needs to be loosened, it is only necessary to move the lever to separate the pawl from the ratchet, and then the rotating shaft can be rotated in the opposite direction to loosen the tightening rope. The operation is convenient. Moreover, this design ensures the stability of the fixation while also facilitating the rapid loosening of the fixation device in an emergency to ensure the safety of the patient. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] Figure 1 It is a schematic diagram of the overall structure of the present invention;

[0021] Figure 2 This is a schematic diagram of the cross-sectional structure of the fixing cylinder of the present invention;

[0022] Figure 3 For the present invention Figure 2 A schematic diagram of the enlarged structure of part A;

[0023] Figure 4 It is a schematic diagram of the structure of the right side view of the present invention;

[0024] Figure 5 This is a schematic cross-sectional view of the first connecting plate and the second connecting plate of the present invention;

[0025] Figure 6 For the present invention Figure 5 Schematic diagram of the enlarged structure of part B.

[0026] Figure numerals: 1. Fixed plate; 101. Fixed cylinder; 102. Driving rod; 103. Rotating plate; 104. Support block; 105. Partition; 106. Rotating shaft; 107. Pawl; 108. V-shaped spring sheet; 109. Ratchet; 2. First connecting plate; 3. Second connecting plate; 301. Movable plate; 302. Support plate; 303. Connecting rod; 304. Clamping plate; 305. Moving plate; 306. Guide rod; 307. Telescopic spring; 4. Tightening rope; 5. Adjusting plate. DETAILED DESCRIPTION

[0027] The following will clearly and completely describe the technical solutions in the embodiments of the present invention in conjunction with the accompanying drawings. Obviously, the described embodiments are only 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 making creative efforts are within the scope of protection of the present invention.

[0028] Example 1: Please refer to Figures 1-6The fixation device for osteoporotic fractures of this embodiment is mainly composed of a tightening mechanism and an installation mechanism. The tightening mechanism includes a fixing plate 1 and a fixing tube 101. The fixing tube 101 is welded to the left side of the fixing plate 1, and a plurality of partitions 105 are evenly welded inside it, so that the interior of the fixing tube 101 can be evenly divided into multiple areas. The top is rotatably connected with a rotating shaft 106 that passes through the partition 105. The installation mechanism consists of a first connecting plate 2 and a second connecting plate 3, which are assembled together by a clamping plate 304, and an adjusting plate 5 is provided between the first connecting plate 2 and the second connecting plate 3 and the fixing plate 1. A plurality of connecting rods 303 are welded on the side away from each other. The other end of the connecting rod 303 is fixedly installed with a tightening rope 4 that passes through the adjusting plate 5 and extends to the inside of the fixing tube 101.

[0029] When actually installing and using, first pass the first connecting plate 2 and the second connecting plate 3 through the fracture site, such as the two sides of the leg fracture, so that the device can wrap the fracture site. This is mainly used when the patient is inconvenient to lift the leg, and can be assembled together through the clamping plate 304. The movable plate 301 can be pressed downward to move the clamping plate 304 into the clamping groove on the first connecting plate 2. Then the movable plate 301 can be loosened. At this time, the telescopic spring 307 can squeeze the movable plate 305 upward. Under the action of the guide rod 306, the movable plate 305 can be moved upward, and then the clamping plate 304 can be driven to move upward through the movable plate 301. The clamping plate 304 is moved into the limiting groove on the first connecting plate 2, thereby completing the assembly of the first connecting plate 2 and the second connecting plate 3, so that the fracture site is between the first connecting plate 2, the second connecting plate 3 and the fixed plate 1, and the movable plate 301 on the second connecting plate 3 is pushed downward, and the movable plate 301 slides in the cavity of the second connecting plate 3 through the slide groove and the slider, while driving the clamping plate 304 welded thereon to move. When the movable plate 301 moves to the appropriate position, the clamping plate 304 is inserted into the clamping groove on the first connecting plate 2, and the clamping plate 304 cooperates with the limiting groove at the top of the clamping groove to realize the preliminary assembly of the first connecting plate 2 and the second connecting plate 3.

[0030] Then, the rotating plate 103 on the top of the rotating shaft 106 is rotated to drive the rotating shaft 106 to rotate in the fixed cylinder 101. Since multiple tightening ropes 4 pass through and extend to one end of the fixed cylinder 101 and are respectively wound around multiple areas of the rotating shaft 106 separated by the partition 105, and the tightening ropes 4 on the front and back are wound around the outer ring of the rotating shaft 106 in opposite directions, when the rotating shaft 106 is rotated, the tightening ropes 4 will gradually wind around the rotating shaft 106, thereby pulling the first connecting plate 2 and the second connecting plate 3 closer to the fixed plate 1, tightening and fixing the fracture site. In the process of rotating the rotating shaft 106, the ratchet 109 on the rotating shaft 106 rotates accordingly, and engages with the upper space of the fixed cylinder 101 The pawl 107 connected to the rotation in the cavity cooperates, and the pawl 107 is always engaged with the ratchet 109 under the action of the V-shaped spring piece 108 to prevent the rotating shaft 106 from reversing, thereby ensuring the stability of the fixation. If it is necessary to loosen the fixation, the lever 102 in the through hole on one side of the fixing cylinder 101 is toggled, and the lever 102 drives the pawl 107 to overcome the elastic force of the V-shaped spring piece 108 and rotate, so that the pawl 107 is separated from the ratchet 109. At this time, the rotating shaft 106 can be rotated in the opposite direction to loosen the tightening rope 4. For the comfort of the patient, protective pads can be installed on the inner side of the fixing plate 1 and the inner sides of the first connecting plate 2, the second connecting plate 3 and the adjusting plate 5 to protect the skin and other tissues of the patient's fracture.

[0031] Example 2: Please refer to Figures 1-6 The fixation device for osteoporotic fractures of this embodiment has a structure basically the same as that of the first embodiment, and also includes a tightening mechanism and an installation mechanism. The tightening mechanism includes components such as a fixing plate 1, a fixing cylinder 101, and a rotating shaft 106. The installation mechanism consists of a first connecting plate 2, a second connecting plate 3, an adjusting plate 5, and a tightening rope 4.

[0032] When used on different patients, the fixation device needs to be appropriately adjusted due to differences in the degree of swelling of the fracture site, limb thickness, etc. of the patients. When the fracture site of the patient is swollen and adjustment is required, the lever 102 in the through hole on one side of the fixing tube 101 is moved, and the lever 102 drives the pawl 107 to overcome the elastic force of the V-shaped spring sheet 108 and rotate, so that the pawl 107 is separated from the ratchet 109. At this time, the rotating shaft 106 can be rotated in the opposite direction to loosen the tightening rope 4.

[0033] During the tightening and fixing process, the tightening rope 4 is made of cow tendon rope, which has good flexibility and strength. It can also be replaced by other high-strength ropes. The tightening rope 4 passes through the through holes on the support blocks 104 on both sides of the fixing tube 101. The support blocks 104 support and guide the tightening rope 4 to ensure that the tightening rope 4 can move smoothly during the tightening process. Rotating the rotating plate 103 drives the rotating shaft 106 to rotate, so that the tightening rope 4 is wrapped around the rotating shaft 106 to achieve tightening and fixing. When the fixing tightness needs to be adjusted, the rotating plate 103 can be rotated again to appropriately tighten or loosen the tightening rope 4 according to actual conditions to meet the treatment needs of different patients.

[0034] Example 3: Please refer to Figures 1-6 The fixation device for osteoporotic fracture of this embodiment can be removed after use, for example, when the leg bone is fractured and the patient is not convenient to lift the leg at this time, the lever 102 in the through hole on one side of the fixing cylinder 101 can be toggled, and the lever 102 drives the pawl 107 to overcome the elastic force of the V-shaped spring sheet 108 to rotate, so that the pawl 107 is separated from the ratchet 109. At this time, the rotating shaft 106 can be rotated in the opposite direction to loosen the tightening rope 4, and the device can be adjusted to a loose state. After that, the finger can be placed on the support plate 302 and the top of the movable plate 301 can be pressed with the thumb. At this time, the card plate 304 can be moved out of the limiting groove provided on the first connecting plate 2, and finally moved out of the card groove provided on the first connecting plate 2. At this time, the first connecting plate 2 and the second connecting plate 3 are separated, which allows the device to be removed from the patient's leg without lifting the patient's leg, which is more convenient to remove.

[0035] Implementation effect: By passing through and extending one end of multiple tightening ropes 4 to the inside of the fixed tube 101, they are respectively wrapped around multiple areas of the rotating shaft 106 separated by the partition 105, and the front and back tightening ropes 4 are wrapped around the outer ring of the rotating shaft 106 in opposite directions. When the rotating shaft 106 is rotated, the tightening ropes 4 can be tightened more evenly and stably, so that the first connecting plate 2 and the second connecting plate 3 are moved closer to the fixed plate 1, providing stable fixation for the osteoporosis fracture site, avoiding the loosening problem caused by loose fixation, and facilitating fracture healing.

[0036] A ratchet 109 is installed on the outer ring of the rotating shaft 106, which cooperates with a pawl 107 that is rotatably connected in the upper cavity of the fixed cylinder 101. Under the action of the V-shaped spring sheet 108, the pawl 107 is always engaged with the ratchet 109 to prevent the rotating shaft 106 from reversing, further ensuring the stability of the fixation and preventing the tightening rope 4 from loosening due to the reversal of the rotating shaft 106, thereby affecting the fixing effect.

[0037] The movable plate 301 on the second connecting plate 3 slides in the cavity through the sliding groove and the slider, and the clamping plate 304 welded on the movable plate 301 can be inserted into the clamping groove on the first connecting plate 2, and the limiting groove on the inner wall of the top of the clamping groove matches the clamping plate 304. This structure facilitates the assembly and disassembly of the first connecting plate 2 and the second connecting plate 3, and is convenient for medical staff to operate. It is also convenient for installation according to the patient's leg fracture, for example, when the leg is inconvenient to lift, to fix the patient's leg fracture.

[0038] By installing a rotating plate 103 on the top of the rotating shaft 106, medical staff can drive the rotating shaft 106 to rotate by rotating the rotating plate 103, thereby tightening or loosening the tightening rope 4. The operation is simple and easy. At the same time, a driving rod 102 is installed on the pawl 107, and a through hole is provided on one side of the fixing cylinder 101 for the driving rod 102 to move. When it is necessary to loosen the fixation, it is only necessary to move the driving rod 102 to separate the pawl 107 from the ratchet 109, and then the rotating shaft 106 can be rotated in the opposite direction to loosen the tightening rope 4. The operation is convenient. Moreover, this design ensures the stability of the fixation while also facilitating the rapid loosening of the fixing device in an emergency to ensure the safety of the patient.

[0039] Finally, it should be noted that the above descriptions are merely preferred embodiments of the present invention and are not intended to limit the present invention. Although the present invention has been described in detail with reference to the aforementioned embodiments, those skilled in the art will be able to modify the technical solutions described in the aforementioned embodiments or substitute equivalents for some of the technical features. Any modifications, equivalent substitutions, and improvements made within the spirit and principles of the present invention shall be included within the scope of protection of the present invention.

Claims

1. A fixation device for osteoporotic fractures, comprising a tightening mechanism and a mounting mechanism, characterized in that: The tightening mechanism comprises a fixed plate (1) and a fixed cylinder (101), wherein the fixed cylinder (101) is welded to the left side of the fixed plate (1), and multiple partitions (105) are uniformly welded inside the fixed cylinder (101), and the top of the fixed cylinder (101) is rotatably connected to a rotating shaft (106) that passes through the multiple partitions (105), and the installation mechanism comprises a first connecting plate (2) and a second connecting plate (3), wherein the first connecting plate (2) and the second connecting plate (3) are assembled together through a clamping plate (304), and an adjustment plate (5) is provided between the first connecting plate (2) and the second connecting plate (3) and the fixed plate (1), and multiple connecting rods (303) are welded on the side of the first connecting plate (2) and the second connecting plate (3) that are away from each other, and a tightening rope (4) that passes through the adjustment plate (5) and extends to the inside of the fixed cylinder (101) is fixedly installed at the other end of the connecting rod (303).

2. The fixation device for osteoporotic fractures according to claim 1, characterized in that: The multiple tightening ropes (4) pass through and extend to one end of the interior of the fixed cylinder (101) and are respectively wound around multiple areas of the rotating shaft (106) separated by the partition (105), and the tightening ropes (4) on the front and the tightening ropes (4) on the back are wound around the outer ring of the rotating shaft (106) in opposite directions.

3. The fixation device for osteoporotic fractures according to claim 1, characterized in that: A cavity is provided at the upper portion of the fixed cylinder (101); a ratchet (109) is installed on the outer ring of the rotating shaft (106) located in the cavity provided at the upper portion of the fixed cylinder (101); a pawl (107) is rotatably connected to the top inner wall and the bottom inner wall of the cavity provided at the upper portion of the fixed cylinder (101); and the pawl (107) matches the ratchet (109).

4. The fixation device for osteoporotic fractures according to claim 1, characterized in that: A V-shaped spring sheet (108) is installed on the inner wall of one side of the cavity provided in the upper portion of the fixed cylinder (101), and the other side of the V-shaped spring sheet (108) is fixedly connected to one side of the pawl (107). A shifting rod (102) is installed on the side of the pawl (107) on which the V-shaped spring sheet (108) is provided. A through hole is provided on one side of the fixed cylinder (101) and extends through and into the cavity in the upper portion of the fixed cylinder (101), and the shifting rod (102) moves in the through hole.

5. The fixation device for osteoporotic fractures according to claim 1, characterized in that: The top of the rotating shaft (106) passes through and extends to the upper part of the fixed cylinder (101), and a rotating plate (103) is installed at one end of the rotating shaft (106) located at the upper part of the fixed cylinder (101), and the bottom end of the rotating shaft (106) is rotatably connected to the bottom inner wall of the fixed cylinder (101).

6. The fixation device for osteoporotic fractures according to claim 1, characterized in that: A plurality of support blocks (104) are welded to both sides of the fixing cylinder (101), and a through hole for a tightening rope (4) to pass through is provided on one side of the support block (104). The tightening rope (4) can be made of cow tendon rope.

7. The fixation device for osteoporotic fractures according to claim 1, characterized in that: A cavity is provided on one side of the second connecting plate (3) close to the first connecting plate (2), and a movable plate (301) penetrating through and extending to the top of the second connecting plate (3) can be slidably connected in the cavity via a sliding groove and a slider, and a support plate (302) is welded to one side wall of the second connecting plate (3).

8. The fixation device for osteoporotic fractures according to claim 1, characterized in that: A plurality of cavities are evenly formed on the second connecting plate (3) and located on a side of the movable plate (301) away from the first connecting plate (2), and a movable plate (305) is provided in each cavity. One side of the movable plate (305) is welded to a side wall of the movable plate (301) away from the first connecting plate (2).

9. The fixation device for osteoporotic fractures according to claim 1, characterized in that: The bottom inner walls of the multiple groups of cavities opened on the second connecting plate (3) are all welded with guide rods (306) that pass through the movable plate (305); the bottom surface of the movable plate (305) is fixedly mounted with a telescopic spring (307) that surrounds the outer ring of the guide rod (306); the bottom end of the telescopic spring (307) is connected to the bottom inner wall of the cavity opened on the second connecting plate (3).

10. The fixation device for osteoporotic fractures according to claim 1, characterized in that: There are multiple clamping plates (304), and the multiple clamping plates (304) are respectively welded to the side of the movable plate (301) away from the moving plate (305). One side of the first connecting plate (2) is provided with multiple clamping slots for the clamping plates (304) to be inserted, and the top inner wall of the clamping slot is provided with a limiting slot matching the clamping plate (304).

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