Fixing device for osteoporotic fracture

Abstract

The fixing device comprises an X-shaped steel plate and a straight steel plate which are located on the two sides of a bone respectively, a plurality of first penetrating holes are formed in the X-shaped steel plate, and a plurality of second penetrating holes are formed in the straight steel plate; a suture line, a loop turning line and a handle connecting line which are used for connecting the X-shaped steel plate and the straight steel plate are arranged in the first penetrating hole and the second penetrating hole in a penetrating mode, and the loop turning line is used for driving the straight steel plate to turn over relative to the X-shaped steel plate. The four corners of the X-shaped steel plate are all provided with stabs, and the stabs protrude out of the surface of the X-shaped steel plate and are used for stabbing into bone cortex. The X-shaped steel plate and the straight steel plate are arranged on the two sides of the fracture position respectively, meanwhile, the X-shaped steel plate is fixed to the fracture position through the spikes, the X-shaped steel plate and the straight steel plate are bound through the suture lines, so that fixation of the fracture position is achieved, and compared with a traditional operation, trauma is smaller, and fixation is firmer.

Description

Technical Field

[0001] The present application relates to the technical field of medical devices, and in particular to a fixation device for osteoporotic fractures. Background Art

[0002] For patients with osteoporotic fractures, such as greater tuberosity fractures of the humerus and greater trochanter fractures of the femur, there are currently two main fixation methods.

[0003] One is to use screws only to fix the fractured part, such as Figure 1 a. This method often requires piercing the cortical bone of the opposite side to achieve a certain holding force. However, due to the decreased bone quality and sparse trabeculae in osteoporotic patients, this method is not firmly fixed, and often results in fixation failure, screws cutting out or penetrating the bone, leading to surgical failure.

[0004] Another way is to use a combination of steel plates and screws for fixation. Figure 1 b. However, this method also has many defects, such as wide exposure of the surgical area, extensive dissection, and insufficient holding force of the plates and screws entering the osteoporotic structure. Utility Model Content

[0005] To this end, the present application provides a fixation device for osteoporotic fractures to solve the above technical problems.

[0006] In order to achieve the above objectives, this application provides the following technical solutions:

[0007] A fixation device for osteoporotic fractures, comprising an X-shaped steel plate and a straight steel plate respectively located on both sides of a bone, the X-shaped steel plate being provided with a plurality of first through-holes, the straight steel plate being provided with a plurality of second through-holes, sutures, loops and handle connection lines for connecting the X-shaped steel plate and the straight steel plate being passed through the first through-holes and the second through-holes, the loops being used to drive the straight steel plate to flip relative to the X-shaped steel plate;

[0008] The four corners of the X-shaped steel plate are all provided with spurs, and the spurs protrude from the surface of the X-shaped steel plate and are used to pierce the bone cortex.

[0009] Optionally, the shape of the X-shaped steel plate matches the shape of the humerus, and the X-shaped steel plate is shapeable.

[0010] Optionally, the straight steel plate is a flat rectangular steel plate.

[0011] Further optionally, 3-5 second perforations are provided, and the second perforations are distributed along the length direction of the straight steel plate.

[0012] Optionally, the width of the straight steel plate is 4.0 mm-4.5 mm.

[0013] Optionally, the surface of the spurs is roughened.

[0014] Optionally, the spur protrudes 2.0 mm from the surface of the X-shaped steel plate.

[0015] Optionally, the first perforations are respectively arranged at four corners of the X-shaped steel plate.

[0016] Optionally, a screw hole is reserved in the middle of the X-shaped steel plate.

[0017] Compared with the prior art, this application has at least the following beneficial effects:

[0018] 1. The angle of the straight steel plate relative to the X-shaped steel plate can be adjusted by using the loop line. The X-shaped steel plate can be fixed to the fractured part by stabbing. The sutures can be used to tighten and tie the two to fix the fractured part. This surgical method is less traumatic than traditional surgery and the fixation is more reliable.

[0019] 2. The shape of the X-shaped steel plate matches the shape of the humerus, which can improve the fit between the two, thereby improving the stability of the fixation device in fixing the fracture position.

[0020] 3. Multiple second perforations are provided to facilitate adjustment of the perforation positions of the suture line, the loop line and the handle connecting line according to the surgical position.

[0021] 4. Roughening the surface of the spur can increase the friction between the spur and the bone cortex, thereby improving the reliability of fixation between the X-shaped steel plate and the bone.

[0022] 5. Through the reserved screw holes, during surgery, you can decide whether to implant screws to enhance the fixation effect based on the bone conditions. BRIEF DESCRIPTION OF THE DRAWINGS

[0023] In order to more intuitively illustrate the prior art and the present application, exemplary drawings are given below. It should be understood that the specific shapes and structures shown in the drawings should not generally be regarded as limiting conditions for implementing the present application; for example, those skilled in the art are capable of easily making conventional adjustments or further optimizations to the addition / reduction / attribution division, specific shapes, positional relationships, connection methods, dimensional ratios, etc. of certain units (components) based on the technical concepts and exemplary drawings disclosed in the present application.

[0024] Figure 1 Schematic diagrams of the structures of two implementation methods of the prior art (the dotted lines represent the fracture lines);

[0025] Figure 2 A schematic diagram of the structure of a fixation device for osteoporotic fractures provided in an embodiment of the present application when in use;

[0026] Figure 3 It is a schematic diagram of the structure after the fixing device is installed in the embodiment of the present application.

[0027] Description of reference numerals:

[0028] 1. X-shaped steel plate; 2. Straight steel plate; 3. First perforation; 4. Second perforation; 5. Suture line; 6. Lap line; 7. Stab; 8. Handle connecting line; 9. Holding handle; 10. Screw hole. DETAILED DESCRIPTION

[0029] The present application is further described below in detail through specific embodiments in conjunction with the accompanying drawings.

[0030] In the description of this application: unless otherwise specified, the meaning of "plurality" is two or more. The terms "first", "second", "third", etc. in this application are intended to distinguish the objects referred to, and do not have special meanings in terms of technical connotations (for example, they should not be understood as emphasizing the importance or order, etc.). Expressions such as "including", "comprising", "having", etc. also mean "not limited to" (certain units, components, materials, steps, etc.).

[0031] The terms such as "upper", "lower", "left", "right", "middle", etc. cited in this application are usually used to indicate the general relative position relationship for the purpose of intuitive understanding by referring to the drawings, and are not absolute limitations on the position relationship in the actual product.

[0032] A fixation device for osteoporotic fractures, referring to Figure 2 and Figure 3 , including an X-shaped steel plate 1 and a straight steel plate 2 respectively located on both sides of the bone. Among them, a plurality of first through holes 3 are formed on the X-shaped steel plate 1, and a plurality of second through holes 4 are formed on the straight steel plate 2. Sutures 5 and loops 6 for connecting the X-shaped steel plate 1 and the straight steel plate 2 are formed in the first through holes 3 and the second through holes 4, and the loops 6 are used to drive the straight steel plate 2 to flip relative to the X-shaped steel plate 1. In addition, a handle connection line 8 is also formed in a second through hole 4 at the edge of the straight steel plate 2, and the handle connection line 8 can connect the straight steel plate 2 with a holding handle 9, thereby preventing the straight steel plate 2 from being separated from the holding handle 9 during the perforation process.

[0033] During the operation, the fracture is first reset, and a small hole is drilled at the fracture, and the other end of the small hole passes through one side of the intact bone. The diameter of the small hole should be slightly larger than the width of the straight steel plate 2 so that the straight steel plate 2 can pass through the small hole smoothly. First, two sutures 5 are passed through the two second perforations 4, and then the ends of the two sutures 5 are passed through the four first perforations 3 respectively; then a loop line 6 is passed through a second perforation 4, and a handle connecting line 8 is passed through a second perforation 4, and the straight steel plate 2 is connected to the holding handle 9. The straight steel plate 2 is inserted longitudinally into the small hole along the extension direction of the small hole from the position of the fracture using the holding handle 9, and is pushed out from the other end of the small hole. During this process, the ends of the sutures 5, the loop lines 6, and the handle connecting line 8 all stay outside the small hole. After the straight steel plate 2 is drilled out from the other end of the small hole, the doctor pulls one end of the flap line 6 on the side of the fracture to drive the straight steel plate 2 to flip so that it can flip to a flat surface and fit the side of the bone, and then pull out the flap line 6 and the handle connecting line 8. Finally, the suture line 5 is tightened and knotted to complete the fixation of the fracture.

[0034] Furthermore, in order to enable the handle 9 to clamp the straight steel plate 2 more stably, one end of the straight steel plate 2 is configured to match the end of the handle 9, that is, both sides are recessed inwards to facilitate the clamping of the handle 9. The handle connection line 8 passes through the second through hole 4 at the recessed end.

[0035] In other embodiments, in order to make the turning of the straight steel plate 2 more stable, a wire is tied to the handle connecting line 8, one end of the wire abuts against the straight steel plate 2, and the other end is fixed to the end of the handle connecting line 8. Therefore, after the straight steel plate 2 passes through the small hole, while pulling the turning loop line 6, the straight steel plate 2 is poked with the wire to help the straight steel plate 2 turn better. In this embodiment, the second through holes 4 through which the turning loop line 6 and the handle connecting line 8 pass should be located at both ends of the straight steel plate 2, respectively.

[0036] In order to facilitate the adjustment of the perforation positions of the suture line 5 and the loop line 6 according to the different fracture positions, 3-5 second perforations 4 are provided, and the second perforations 4 are evenly distributed along the length direction of the straight steel plate 2. In the embodiment of the present application, 4 second perforations 4 are provided. When threading, the suture line 5 passes through the two middle second perforations 4, the handle connection line 8 passes through the second perforation 4 at the concave end of the straight steel plate 2, and the loop line 6 passes through the last second perforation 4, so that the straight steel plate 2 can be conveniently driven to flip while suturing and binding the straight steel plate 2.

[0037] Specifically, in the embodiment of the present application, in order to improve the connection stability between the X-shaped steel plate 1 and the fracture, and to improve the fixing effect and pull-out resistance between the X-shaped steel plate 1 and the bone cortex, a spur 7 structure with a special shape is designed. The spur 7 is respectively arranged at the four corners of the X-shaped steel plate 1, and is characterized by protruding 2.0 mm from the surface of the X-shaped steel plate 1, and is used to penetrate the bone cortex. Among them, the diameter of the end of the spur 7 away from the surface of the X-shaped steel plate 1 gradually decreases, so that the end of the spur 7 is sharp, thereby facilitating the insertion of the spur 7 into the bone cortex.

[0038] During the operation, after the loop line 6 is pulled out, the spurs 7 are first inserted into the bone cortex by pressing or knocking, and then the suture line 5 is tightened and knotted to fix the X-shaped steel plate 1 and the fractured part.

[0039] In order to improve the stability of the spur 7 after being inserted into the bone cortex, the surface of the spur 7 is roughened to increase the friction between the spur 7 and the bone cortex, thereby ensuring that the X-shaped steel plate 1 can be firmly connected to the fractured part after the spur 7 is inserted, so as to prevent the X-shaped steel plate 1 from being dislocated relative to the fractured part after fixation, thereby affecting the surgical effect. In other embodiments, in addition to the roughening treatment, there are other processing methods that can also improve the stability of the spur 7 and the X-shaped steel plate 1. For example, the spur 7 is appropriately designed in shape and controlled in size to ensure that it can adapt to the shape and size of the fractured part.

[0040] The first through holes 3 are respectively arranged at the four corners of the X-shaped steel plate 1 . In the embodiment of the present application, a total of four first through holes 3 are arranged. Each first through hole 3 is correspondingly arranged at one side of the spur 7 .

[0041] In order to further improve the stability of the X-shaped steel plate 1 after fixation, the material used for the X-shaped steel plate 1 allows shaping within a certain range, so that its shape is shaped into a non-planar structure that matches the shape of the humerus. In addition to the X-shaped steel plate 1 used in this embodiment, in other embodiments, other special-shaped steel plates can also be used, and the corresponding steel plate can be selected for fixation according to the different shapes of the fracture positions.

[0042] In this embodiment, the main body of the straight steel plate 2 is a flat rectangular steel plate, wherein the width of the straight steel plate 2 is 4.0 mm-4.5 mm so as to smoothly pass through the punched small holes.

[0043] In addition, a screw hole 10 is reserved in the middle of the X-shaped steel plate 1. Through the screw hole 10, the doctor can decide whether to implant an interface extrusion screw or other metal locking screw according to the specific situation, thereby further strengthening the fixation stability of the fracture.

[0044] The implementation principle of the embodiment of the present application is as follows: during the operation, the fractured part is first reset, and then a small hole is punched from the fracture position, and the small hole passes through the uninjured bone. Then, the suture 5, the loop line 6 and the handle connecting line 8 are respectively passed through the corresponding first perforation 3 and / or second perforation 4, and then the straight steel plate 2 is longitudinally passed through the small hole by holding the handle 9 to the other side of the bone. At this time, the X-shaped steel plate 1 and the straight steel plate 2 are respectively at the two ends of the small hole, and the suture 5, the loop line 6 and the handle connecting line 8 pass through the small hole to connect the two.

[0045] By pulling one end of the loop line 6, the straight steel plate 2 is turned over to fit the side of the bone, and then the loop line 6 and the handle connecting line 8 are pulled out. Finally, the spur 7 is inserted into the bone cortex, and the suture line 5 is tightened and tied to complete the fixation.

[0046] The technical features of the above embodiments may be arbitrarily combined (as long as there is no contradiction in the combination of these technical features). To make the description concise, not all possible combinations of the technical features in the above embodiments are described; these embodiments that are not explicitly written should also be considered to be within the scope of this specification.

Claims

1. A fixation device for osteoporotic fractures, characterized in that: The invention comprises an X-shaped steel plate (1) and a straight steel plate (2) respectively located on two sides of a bone, wherein the X-shaped steel plate (1) is provided with a plurality of first through holes (3), and the straight steel plate (2) is provided with a plurality of second through holes (4), and the first through holes (3) and the second through holes (4) are provided with sutures (5), a turning loop (6) and a handle connecting line (8) for connecting the X-shaped steel plate (1) and the straight steel plate (2), and the turning loop (6) is used to drive the straight steel plate (2) to turn over relative to the X-shaped steel plate (1); The four corners of the X-shaped steel plate (1) are all provided with thorns (7), and the thorns (7) protrude from the surface of the X-shaped steel plate (1) and are used to pierce the bone cortex.

2. The fixation device for osteoporotic fractures according to claim 1, characterized in that: The shape of the X-shaped steel plate (1) matches the shape of the humerus, and the X-shaped steel plate (1) is shapeable.

3. The fixation device for osteoporotic fractures according to claim 1, characterized in that: The straight steel plate (2) is a flat rectangular steel plate.

4. The fixation device for osteoporotic fractures according to claim 3, characterized in that: The number of the second through holes (4) is 3 to 5, and the second through holes (4) are distributed along the length direction of the straight steel plate (2).

5. The fixation device for osteoporotic fractures according to claim 1, characterized in that: The width of the straight steel plate (2) is 4.0 mm-4.5 mm.

6. The fixation device for osteoporotic fractures according to claim 1, characterized in that: The surface of the thorn (7) is roughened.

7. The fixation device for osteoporotic fractures according to claim 1, characterized in that: The spurs (7) protrude 2.0 mm from the surface of the X-shaped steel plate (1).

8. The fixation device for osteoporotic fractures according to claim 1, characterized in that: The first through holes (3) are respectively arranged at the four corners of the X-shaped steel plate (1).

9. The fixation device for osteoporotic fractures according to claim 1, characterized in that: A screw hole (10) is reserved in the middle of the X-shaped steel plate (1).

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