Multi-angle and multifunctional fracture minimally invasive treatment system with support nails

Abstract

A multi-angle and multifunctional fracture minimally invasive treatment system with support nails relates to the technical field of orthopedic medical instruments and comprises a fracture fixing plate, sliders, the support nails and slider positioning structures, one end or two ends of the fracture fixing plate are provided with sliding grooves, the end, without the sliding grooves, of the fracture fixing plate is provided with through holes, the sliders are clamped on the sliding grooves and can move left and right along the sliding grooves, and the support nails are positioned on the sliders. The sliding blocks are various, the support nail penetrates through one of the penetrating hole, the sliding block vertical penetrating hole and the sliding block inclined penetrating hole, penetrates through the fractured skin and is fixed to the fractured bone through a positioning structure arranged on the support nail, and the sliding block positioning structure is a positioning structure for positioning the sliding blocks in the sliding grooves so that the sliding blocks can not move. Compared with the prior art, the bone fracture connecting device has the advantages of being capable of meeting different requirements of various bone fracture connection on screw screwing fixing point positions and screwing directions of screws.

Description

Technical Field

[0001] The utility model relates to the technical field of orthopedic medical equipment, in particular to a multi-angle and multi-functional minimally invasive fracture treatment system with a bracket nail. Background Art

[0002] As disclosed in patent applications CN2023104896012 and 202310490037.6, the existing minimally invasive plate system with support columns has one side of the plate body spanning both sides of the fracture line, at least two support columns are arranged on each side of one side of the plate body, and two adjacent support columns are fixedly connected to the plate body on both sides of the screw hole. After the screw is inserted into the screw hole from the other side of the plate body, it directly enters the bone cortex to complete the fracture fixation. In this minimally invasive bone plate system with a support column, after the position of the fixation plate is determined, the direction in which the screw is screwed into the fracture segment is fixed. However, due to the complexity of the fracture, not all positions are suitable for screw screwing and fixation. The screw hole may not be used for fracture fixation due to the lack of a suitable screw fixing point, which brings great inconvenience to the fixation of the fracture. That is, in the prior art, after the position of the fixation plate for fixing the fracture is determined, the screw entry point of the fixation plate is fixed and the direction of the screw is fixed. When the position of the screw entry point is the fracture line and other situations that are not suitable for fixation, the fracture cannot be fixed at this point; similarly, if the direction of the screw entry point may cause bone displacement, fracture (fragment) separation, entering the contralateral fracture line, etc., the fracture fixation cannot be achieved. In severe cases, the surgical fixation fails. If the fixation plate is continued to be used to fix the fracture, the position of the fixation plate needs to be readjusted during the operation, and the fracture needs to be re-fixed. In such a case, if the position of the screw entry point or the direction of the screw entry can be changed, it is beneficial to better complete the fracture fixation clinically and to fracture treatment. Summary of the invention

[0003] The purpose of the utility model is to provide a multi-angle, multi-functional minimally invasive fracture treatment system that can overcome one or more of the above-mentioned shortcomings, that is, when the position of the fracture fixation plate has been fixed, the screw fixation position and the screw fixation direction can be adjusted during the operation to achieve the most effective fixation of the fracture.

[0004] The utility model discloses a multi-angle and multi-functional minimally invasive fracture treatment system with a bracket nail, which comprises a fracture fixation plate (bone plate), a slider, a bracket nail and a slider positioning structure. A slide groove is arranged at one end or both ends of the fracture fixation plate, and a perforation is arranged at the end of the fracture fixation plate without the slide groove. The slider is clamped on the slide groove and can move left and right along the slide groove. There are many kinds of sliders, including a slider with a vertical perforation of the slider in the middle, a slider with an oblique perforation of the slider in the middle, a slider with a vertical perforation of the slider on one side and a slider with an oblique perforation of the slider on one side. The bracket nail is a bracket nail which passes through one of the perforation, the vertical perforation of the slider and the oblique perforation of the slider and passes through the fractured skin and is fixed on the fractured bone through the positioning structure arranged on the bracket nail. The slider positioning structure is a positioning structure which positions the slider in the slide groove so that the slider cannot move.

[0005] When in use, according to the fracture situation, after the fracture is connected, the fracture fixing plate and the slider are selected according to the possibility of inserting the bracket nail, and the slider is installed in the slide groove, and then the slider is fixed according to the set slider position through the slider positioning structure, so that holes are drilled on both sides of the fracture according to the perforations of the fracture fixing plate and the slider perforations of the slider, and the bracket nails that pass through the fracture fixing plate from above are screwed into the perforations of the fracture, and the screws are rotated to position the positioning structure (the sleeve sleeved on the bracket nail or the positioning ring fixedly connected to the bracket nail) between the fracture fixing plate and the fracture, so as to complete the positioning of the fracture after connection. In this way, the fracture fixing plate can be located outside the skin to avoid the large trauma caused by the fracture fixing plate being located under the skin, and at the same time, the fracture fixing plate plays a role in firmly connecting the fracture and ensuring the good healing effect of the fracture after connection;

[0006] Since the position of the vertical perforation or the oblique perforation of the slider changes with the position of the slider, the position and angle of the vertical perforation or the oblique perforation of the slider can be changed to adapt to fixation in different fracture scenarios;

[0007] In addition, since the position of the vertical perforation of the slider or the oblique perforation of the slider changes with the position of the slider, the micro-motion of the screw can be achieved by micro-movement of the slider, thereby achieving pressure and traction on the fracture ends, thereby achieving functions such as pressure, micro-motion, and bone traction between the fracture ends, and achieving functions such as promoting fracture healing or bone lengthening.

[0008] Since a slider is used and different sliders have different perforation positions, the corresponding slider can be selected according to actual needs and installed on the slide groove, thereby solving the problem that the bracket nail of the traditional bone plate cannot be screwed and fixed due to the uncertainty of the rotation point of the bracket nail caused by the complexity of the fracture situation.

[0009] Preferably, the slider positioning structure is a fixing screw that is threaded into the slide groove from the end surface of the fracture fixation plate, and the fixing screw is close to the slider to fix the slider, or the screw is screwed into the slider to fix the position of the slider.

[0010] When in use, after installing the slider, place the slider against the side of the slide groove located in the middle of the fracture fixation plate, then screw in the fixing screw, and fix the slider between the fixing screw and the side of the slide groove located in the middle of the fracture fixation plate by pressing the fixing screw against the slider;

[0011] Alternatively, according to the setting, after the slider is moved to the setting position of the slide slot, the fixing screw is screwed in, and the fixing screw is screwed into the slider to prevent the slider from moving, thereby fixing the position of the slider on the slide slot.

[0012] Alternatively, the slider positioning structure is an adjusting rod with a threaded rod rotatably arranged on the end surface of the fracture fixation plate, and the threaded rod is located in the sliding groove and can be screwed into the side surface of the slider.

[0013] When in use, after the slider is installed, the threaded rod of the adjusting rod is screwed into the slider, and the adjusting rod is rotated to move the slider along the slide groove until the slider moves to the set position.

[0014] Compared with the prior art, the utility model has the advantages of being able to adapt to the different requirements of various fracture connections on the position and direction of the screw insertion fixation point, and can achieve functions such as pressurization, micro-motion, and bone traction between the fracture ends, and realize functions such as promoting fracture healing or bone lengthening. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] Figure 1 This is a schematic diagram of the structure of Example 1 of the multi-angle and multi-functional minimally invasive fracture treatment system of the stent nail of the present invention;

[0016] Figure 2 This is the first design of the slider;

[0017] Figure 3 This is the second design of the slider;

[0018] Figure 4 This is the third design of the slider;

[0019] Figure 5 This is the fourth design of the slider;

[0020] Figure 6 This is the first design drawing of the positioning structure, that is Figure 1 Enlarged view of point C;

[0021] Figure 7 This is the second design drawing of the positioning structure;

[0022] Figure 8The second design drawing of the slider positioning structure;

[0023] Fig. 9 The third design drawing of the slider positioning structure;

[0024] Fig.10 It is a partial enlarged view of the end of the chute;

[0025] Fig.11 This is a schematic diagram of the structure of Example 2 of the multi-angle and multi-functional minimally invasive fracture treatment system of the stent nail of the present invention;

[0026] Fig.12 for Figure 1 A top view of

[0027] Fig.13 for Fig.11 Top view.

[0028] Explanation of the reference numerals: A-skin; B-fracture; 1-fracture fixation plate; 101-fracture fixation plate; 102-end cover; 103-fixing member; 2-slider; 3-support nail; 301-screw head; 302-screw body; 4-slider positioning structure; 5-slide groove; 501-slider inlet; 6-perforation; 7-slider vertical perforation; 8-slider oblique perforation; 9-positioning structure; 10-adjusting slider; 11-inlaid slide groove; 12-inlaid slider. DETAILED DESCRIPTION

[0029] The multi-angle and multi-functional minimally invasive fracture treatment system of the utility model is now described in further detail in conjunction with the accompanying drawings and embodiments:

[0030] Example 1: Figure 1 As shown, the utility model of the bracket nail multi-angle, multi-functional fracture minimally invasive treatment system is implemented as follows, including a fracture fixation plate 1, a slider 2, a bracket nail 3, and a slider positioning structure 4. One end of the fracture fixation plate 1 is provided with a slide groove 5, and the other end of the fracture fixation plate 1 without the slide groove 5 is provided with a perforation 6. The slider 2 can move into or out of the slide groove 5. After the slider 2 is set in the slide groove 5, the slider 2 is stuck on the slide groove 5 and can move left and right along the slide groove 5. There are many types of sliders 2, including Figure 2 The slider 2 shown in the figure has a vertical through hole 7 in the middle. Figure 3 The slider 2 shown in the figure has a slider oblique through hole 8 in the middle (the slider oblique through hole 8 can be multiple, and the inclination angle of each slider oblique through hole 8 is different, such as 5 degrees, 8 degrees, 10 degrees, 15 degrees, etc., so that the user can choose according to actual needs), Figure 4 As shown, a slider 2 is provided with a vertical slider perforation 7 on one side, as shown in FIG. Figure 5As shown, a slider 2 is provided with a slider oblique through hole 8 on one side, and a bracket nail 3 is a bracket nail that passes through the through hole 6, the slider vertical through hole 7, and the slider oblique through hole 8 and passes through the fracture skin A and is fixed on the bone at the fracture site B through a positioning structure 9 provided on the bracket nail 3;

[0031] When using, Figure 6 As shown, the positioning structure 9 is a sleeve-shaped object that matches the bracket nail body. The positioning structure 9 is sleeved on the bracket nail 3 and is located between the fracture fixation plate 1 and the fracture site B;

[0032] Or, if Figure 7 As shown, the through hole 6, the vertical through hole 7 of the slider and the oblique through hole 8 of the slider are threaded holes, the positioning structure 9 is a positioning ring arranged on the bracket nail body, the bracket nail head is a head with threads matching the threaded hole, the bracket nail head is screwed on the threaded hole, the bracket nail end is screwed into the two sides of the fracture and the positioning ring is close to the surfaces on both sides of the fracture B;

[0033] The slider positioning structure 4 is a positioning structure for positioning the slider 2 in the slide groove 5 so that the slider 2 cannot move. Figure 1 As shown, the slider positioning structure 4 is a fixing screw that is threaded into the slide groove 5 from the end surface of the fracture fixation plate 1, and the fixing screw is close to the slider 2 to fix the slider 2. At this time, an adjustment slider 10 can be provided to adjust the position of the slider 2 on the slide groove 5. The adjustment slider 10 is an adjustment slider that is stuck on the slide groove 5 and can move left and right along the slide groove 5;

[0034] Or, if Figure 8 As shown, the screw is screwed into the slider 2 to fix the position of the slider 2;

[0035] like Fig.10 As shown, the fracture fixation plate 1 includes a fracture fixation plate body 101 and an end cover 102. The slide groove 5 directly reaches the end of the fracture fixation plate body 101, so that the slide groove 5 forms a slider inlet 501 at the end of the bone plate body 101. The end cover 102 is fixed to the end of the fracture fixation plate body 101 by a fixing member 103 (such as a screw) to close the slider inlet 501. The slider positioning structure 4 is arranged on the end cover 102;

[0036] Or, if Fig. 9 As shown, the slider positioning structure 4 is an adjusting screw, the root of the adjusting screw is rotationally positioned and connected to the end cover 102, and the body of the adjusting screw is rotationally connected to the slider 2. In this way, by rotating the adjusting screw, the slider 2 can be moved back and forth along the slide groove 5, so that the slider 2 moves to the set position. After the slider 2 is in place, stop rotating the adjusting screw to keep the position of the slider 2 fixed.

[0037] The side surface of the slider 2 is connected to the inner side surface of the slide groove 5 by an inlaid slide groove 11 and an inlaid slider 12;

[0038] The cross-sectional shape of the inlay slide groove 11 and the inlay slide block 12 is one of square, V-shaped and dovetail-shaped.

[0039] Example 2: Fig.11 As shown, this embodiment is based on the embodiment 1, and both ends of the fracture fixation plate 1 are provided with sliding grooves 5.

[0040] When in use, according to the fracture situation, after the fracture is connected, the fracture fixing plate 1 and the slider 2 are selected according to the possibility of inserting the bracket nail 3, and the slider 2 is installed in the slide groove 5, and then the slider positioning structure 4 is used to fix the position of the slider 2 according to the set slider position, so that holes are drilled on both sides of the fracture according to the through holes 6 of the fracture fixing plate 1 and the slider through holes of the slider 2 (one of the slider vertical through holes 7 and the slider oblique through holes 8), and the bracket nail 3 passing through the fracture fixing plate 1 from above is screwed into the through holes of the fracture B, and the bracket nail 3 is rotated to position the positioning structure 9 (the sleeve sleeved on the bracket nail 3 or the positioning ring fixedly connected to the bracket nail 3) between the fracture fixing plate 1 and the fracture B, thereby completing the positioning of the fracture B after connection. In this way, the fracture fixing plate 1 can be located outside the skin A to avoid the large trauma caused when the fracture fixing plate 1 is located under the skin A, and at the same time, the fracture fixing plate 1 can play a role in firmly connecting the fracture B to ensure the good healing effect of the fracture B after connection.

Claims

1. The multi-angle and multi-functional minimally invasive fracture treatment system with stent nails is characterized by: It includes a fracture fixation plate, a slider, a bracket nail, and a slider positioning structure. A sliding groove is arranged at one end or both ends of the fracture fixation plate, and a perforation is arranged at the end of the fracture fixation plate without the sliding groove. The slider is stuck on the sliding groove and can move left and right along the sliding groove. There are many types of sliders, including a slider with a vertical perforation of the slider in the middle, a slider with an oblique perforation of the slider in the middle, a slider with a vertical perforation of the slider on one side, and a slider with an oblique perforation of the slider on one side. The bracket nail is a bracket nail that passes through one of the perforation, the vertical perforation of the slider, and the oblique perforation of the slider and passes through the fractured skin and is fixed on the fractured bone through the positioning structure arranged on the bracket nail. The slider positioning structure is a positioning structure that positions the slider in the sliding groove so that the slider cannot move.

2. The multi-angle and multi-functional minimally invasive fracture treatment system of the stent nail according to claim 1 is characterized in that: The slider positioning structure is a fixing screw that is threaded into the slide groove from the end surface of the fracture fixation plate. The fixing screw is close to the slider to fix the slider, or the screw is screwed into the slider to fix the position of the slider.

3. The multi-angle and multi-functional minimally invasive fracture treatment system of the stent nail according to claim 1 is characterized in that: The slider positioning structure is an adjusting rod with a threaded rod rotatably arranged on the end surface of the fracture fixing plate. The threaded rod is located in the sliding groove and can be screwed into the side surface of the slider.

4. The multi-angle and multi-functional minimally invasive fracture treatment system of the stent nail according to claim 1, 2 or 3, characterized in that: The fracture fixation plate includes a fracture fixation plate body and an end cover. The slide groove reaches directly to the end of the fracture fixation plate body, so that the slide groove forms a slider inlet at the end of the bone plate body. The end cover is fixed to the end of the fracture fixation plate body by a fixing component to close the slider inlet. The slider positioning structure is arranged on the end cover.

5. The multi-angle and multi-functional minimally invasive fracture treatment system of the stent nail according to claim 1, 2 or 3, characterized in that: The side surface of the slider is connected to the inner side surface of the slide groove by inlaying the slide groove and inlaying the slider 2.

6. The multi-angle and multi-functional minimally invasive fracture treatment system of the stent nail according to claim 5 is characterized in that: The cross-sectional shape of the inlay slide groove and the inlay slider is one of square, V-shaped and dovetail-shaped.

Images