Bone nail fixing rod and control structure thereof

Abstract

The utility model relates to a bone nail fixing rod and a control structure thereof. The bone nail fixing rod comprises a bone nail fixing rod body, a fixing piece, a moving piece and a holding part. The fixing part is provided with a first front end and a first tail end which are opposite, the first front end is provided with a groove used for containing and fixing the bone nail fixing rod, the moving part is provided with a second front end and a second tail end which are opposite, and the second front end is provided with a notch used for limiting and moving the bone nail fixing rod. The second tail end is provided with a first thread, the holding part is provided with a containing space and a rotating part, the containing space is used for containing the first tail end of the fixed part and the second tail end of the movable part, and the side wall of the containing space is provided with a second thread embedded with the first thread; the rotating portion is engaged with the second end.

Description

Technical Field

[0001] This utility model relates to a bone screw fixation rod and its control structure, and more particularly to a bone screw fixation rod and its control structure applied to the spine. Background Technology

[0002] As people age, their bodies are prone to various symptoms due to aging, especially those caused by prolonged standing or sitting at work, which can easily lead to symptoms of nerve compression in the spine. When nerve compression occurs, medical professionals usually perform minimally invasive lumbar spine surgery, which involves fixing multiple bone screws between specific segments of the vertebrae to prevent displacement of those segments. This prevents the patient from moving those segments of the vertebrae (e.g., bending over), thereby relieving the nerve compression.

[0003] During minimally invasive lumbar spine surgery, after fixing the required number of bone screws to the vertebrae, a bone screw fixation rod is used to connect the various bone screw rods in series to fix each bone screw in order to ensure that each bone screw is fixed along the angle of the vertebrae.

[0004] However, when the bone screw fixation rod and its control structure of conventional technology are inserted into the body, the bone screw fixation rod and its control structure hold the bone screw fixation rod at a fixed angle, which means that the micro-wound must be of a certain size. Therefore, it is difficult to reduce the area of ​​the micro-wound, which may lead to inflammation or infection of the micro-wound later, and the micro-wound also takes a long time to heal.

[0005] Therefore, to solve the above problems, it is necessary to further improve the bone screw fixation rod and its control structure so that the opening of the micro-trauma can be greatly reduced, so as to minimize the range of the micro-trauma and minimize soft tissue damage at the surgical site. Summary of the Invention

[0006] In view of the shortcomings of the prior art, the inventor of this utility model has been eager to improve and innovate, and has developed a new type of bone nail fixation rod and its control structure to further reduce the opening size of micro-trauma wounds.

[0007] The purpose of this utility model is to provide a bone screw fixation rod and its control structure, wherein the bone screw fixation rod and its control structure include a bone screw fixation rod, a fixing component, a moving component, and a gripping part.

[0008] The fastener has a first front end and a first end, the first front end being provided with a groove for accommodating and fixing the bone screw fixation rod.

[0009] The movable component has a second front end and a second end, the second front end is provided with a notch for limiting and moving the bone screw fixing rod, and the second end is provided with a first thread.

[0010] The holding part has a receiving space and a rotating part, the receiving space is arranged at the top end of the holding part, the rotating part is arranged at the bottom end of the holding part, the receiving space is used to accommodate the first end of the fixing part and the second end of the moving part, and the side wall of the receiving space is provided with a second thread matched with the first thread, and the rotating part is engaged with the second end.

[0011] Preferably, the length of the first thread is greater than the length of the second thread.

[0012] The cross-sectional shape of the bone nail fixing rod is not limited to circular, oval, square or polygonal.

[0013] The parallel sides of the bone nail fixing rod are provided with linear grooves, the inner sides of the two ends of the recess of the fixing part are provided with first protrusions, the first protrusions at the two ends of the inner side of the recess are parallel to each other, and can be embedded into the linear grooves of the bone nail fixing rod to fix the bone nail fixing rod.

[0014] The side wall of the notch of the moving part is provided with a second protrusion, and the second protrusion can be embedded into the linear grooves of the bone nail fixing rod to move the bone nail fixing rod.

[0015] The bone nail fixing rod and the fixing part and the moving part in the control structure thereof are arranged to be in close contact with each other, when the rotating part rotates to make the first thread rotate along the second thread, the relative movement of the moving part along the fixing part can be controlled to adjust the angle between the bone nail fixing rod and the fixing part, which is beneficial to placing the bone nail fixing rod into the minimally invasive incision at a smaller angle, and then connecting multiple bone nails to fix them.

[0016] By rotating the rotating part, the first thread arranged at the second end of the moving part rotates along the second thread arranged on the side wall of the receiving space, that is, the angle between the bone nail fixing rod and the fixing part can be adjusted, so that the most appropriate placement angle is selected to enter the minimally invasive incision according to the angle of the position of the bone nail to be fixed. Compared with the prior art, the opening of the minimally invasive incision can be further reduced, the range of the minimally invasive incision is minimized, and the damage to the soft tissue of the surgical site is minimized.

[0017] Hereinafter, specific embodiments will be described in detail with reference to the accompanying drawings, so that the purpose, technical content, characteristics and effects of the present application can be better understood. BRIEF DESCRIPTION OF DRAWINGS

[0018] Figure 1 It is a side view of the bone nail fixing rod and its control structure of the present application;

[0019] Figure 2 Figure 1 is a partial enlarged perspective view of the first front end of the bone nail fixing rod and the fixing member of the control structure thereof according to the present application;

[0020] Figure 3 Figure 2 is a perspective view of the bone nail fixing rod and the control structure thereof according to the present application;

[0021] Figure 4 Figure 3 is a sectional view of the bone nail fixing rod and the control structure thereof according to the present application;

[0022] Figure 5 Figure 4 is a schematic view of the relative movement of the moving member along the fixing member according to the present application;

[0023] Figure 6 Figure 5 is a schematic view of the bone nail fixing rod series connecting the bone nail according to the present application.

[0024] BRIEF DESCRIPTION OF THE DRAWINGS

[0025] 1: bone nail fixing rod and control structure thereof

[0026] 2: bone nail fixing rod

[0027] 3: fixing member

[0028] 4: moving member

[0029] 5: holding portion

[0030] 6: first front end

[0031] 7: first end

[0032] 8: groove

[0033] 9: second front end

[0034] 10: second end

[0035] 11: notch

[0036] 12: first thread

[0037] 13: accommodating space

[0038] 14: rotating portion

[0039] 15: second thread

[0040] 16: linear groove

[0041] 17: first protrusion

[0042] 18: second protrusion

[0043] 19: bone nail DETAILED DESCRIPTION

[0044] In order to clearly show the features, contents, advantages and effects of the present application, the present application is described in detail in combination with the drawings. The drawings used in the description are only schematic and auxiliary, and are not necessarily the real proportion and accurate configuration after the implementation of the present application. Therefore, the drawings should not limit the patent scope of the present application in the actual implementation. Please note.

[0045] In order to more completely and clearly disclose the technical content, creative purpose and effects of the present application, the following detailed description is provided, and please refer to the disclosed drawings and figure numbers.

[0046] Please refer to Figure 1 , Figure 2 , Figure 3 and Figure 4 , which are respectively the side view, the local enlarged perspective view of the first front end of the fixing member and the second front end of the moving member, the perspective view and the sectional view of the bone screw fixing rod.

[0047] As shown in Figure 1 , Figure 2 , Figure 3 and Figure 4 , the bone screw fixing rod and its control structure 1 comprises a bone screw fixing rod 2, a fixing member 3, a moving member 4 and a holding part 5.

[0048] The cross-sectional shape of the bone screw fixing rod 2 is not limited, which can be circular, oval, square or polygonal.

[0049] The fixing member 3 has opposite first front end 6 and first end 7, the first front end 6 is provided with a groove 8 for accommodating and fixing the bone screw fixing rod 2.

[0050] The moving member 4 has opposite second front end 9 and second end 10, the second front end 9 is provided with a notch 11 for limiting and moving the bone screw fixing rod 2, and the second end 10 is provided with a first thread 12.

[0051] The holding part 5 has an accommodation space 13 and a rotating part 14, the accommodation space 13 is arranged at the top end of the holding part 5, and the rotating part 14 is arranged at the bottom end of the holding part 5, the accommodation space 13 is used to accommodate the first end 7 of the fixing member 3 and the second end 10 of the moving member 4, and the side wall of the accommodation space 13 is provided with a second thread 15 matched with the first thread 12, and the rotating part 14 is engaged with the second end 10.

[0052] Preferably, the length of the first thread 12 is greater than the length of the second thread 15.

[0053] The parallel two sides of the bone nail fixing rod 2 are provided with linear grooves 16, the inner two ends of the groove 8 of the fixing member 3 are provided with first convex points 17, the first convex points 17 of the inner two ends of the groove 8 are parallel to each other, and can be embedded into the linear grooves 16 of the bone nail fixing rod 2 to fix the bone nail fixing rod 2.

[0054] The side wall of the notch 11 of the moving member 4 is provided with a second convex point 18, and can be embedded into the linear grooves 16 of the bone nail fixing rod 2 to move the bone nail fixing rod 2.

[0055] Please also refer to Figure 5 and Figure 6 , Figure 5 The bone nail fixing rod and its control structure of the utility model, the moving member along the relative movement of the fixing member is shown in the figure, and Figure 6 The schematic diagram of the bone nail fixing rod in series connection with the bone nail.

[0056] From Figure 5 and Figure 6 It can be seen that the fixing member 3 and the moving member 4 in the bone nail fixing rod and its control structure 1 are arranged in close contact with each other, when the rotating part 14 rotates to make the first thread 12 rotate along the second thread 15, the relative movement of the moving member 4 along the fixing member 3 can be controlled, so as to adjust the angle between the bone nail fixing rod 2 and the fixing member 3, which is beneficial to placing the bone nail fixing rod 2 into the minimally invasive wound at a smaller angle, and then connecting multiple bone nails 19 in series to fix.

[0057] As described above, by rotating the rotating part, the moving member can be relatively moved along the fixing member, that is, the angle between the bone nail fixing rod and the fixing member can be adjusted, so as to select the most appropriate placement angle to enter the minimally invasive wound according to the angle of the position of the bone nail to be fixed, which can further greatly reduce the opening of the minimally invasive wound, minimize the range of the minimally invasive wound, and minimize the damage to the soft tissue of the surgical site.

[0058] As described above, when the operation, use and effects of the utility model can be fully understood, the above-mentioned embodiments are only preferred embodiments of the utility model, and cannot limit the range of the utility model, that is, simple equivalent changes and modifications according to the claims and content of the specification of the utility model are all within the scope of the utility model.

Claims

1. A bone screw fixation rod and its control structure, characterized in that, include: Bone screw fixation rod; The fastener has a first front end and a first end, the first front end being provided with a groove for receiving and fixing the bone screw fixation rod; The movable part has a second front end and a second end, the second front end is provided with a notch for limiting and moving the bone screw fixing rod, and the second end is provided with a first thread; as well as The gripping part has a receiving space and a rotating part. The receiving space is located at the top end of the gripping part, and the rotating part is located at the bottom end of the gripping part. The receiving space is used to accommodate the first end of the fixing member and the second end of the moving member, and the sidewall of the receiving space is provided with a second thread that engages with the first thread. The rotating part engages with the second end. The fixing component and the moving component are fitted together.

2. The bone screw fixation rod and its control structure according to claim 1, characterized in that, The rotating part rotates to make the first thread rotate along the second thread, and controls the moving part to move relative to the fixing part, so as to adjust the angle between the bone screw fixing rod and the fixing part.

3. The bone screw fixation rod and its control structure according to claim 2, characterized in that, The length of the first thread is greater than the length of the second thread.

4. The bone screw fixation rod and its control structure according to claim 1, characterized in that, Linear grooves are provided on both parallel sides of the bone screw fixation rod.

5. The bone screw fixation rod and its control structure according to claim 4, characterized in that, The fixing member has a first protrusion at both ends of the inner side of the groove, and the first protrusions at both ends of the inner side of the groove are parallel to each other and fit into the linear groove to fix the bone screw fixing rod.

6. The bone screw fixation rod and its control structure according to claim 5, characterized in that, The notch sidewall of the movable component is provided with a second protrusion, which fits into the linear groove to move the bone screw fixing rod.

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