A ligament reconstruction fixator with a bifurcated structure

Abstract

The present application relates to a ligament reconstruction fixation device with a bifurcated structure, belonging to the technical field of medical devices. It includes a thread band and a sheath. There are multiple thread bands. A plurality of fixing blocks are installed on the side wall of the sheath, and the plurality of fixing blocks are arranged at intervals. One end of each of the multiple thread bands penetrates into the sheath from one end of the sheath and passes out through the fixing blocks. Each thread band corresponds to one fixing block. The thread band, the sheath and the fixing blocks are all slidably connected. Both ends of the thread band are exposed outside the sheath. The present application has the effect of reducing the surgical difficulty.

Description

Technical Field

[0001] This application relates to the technical field of medical devices, and particularly to a ligament reconstruction fixation device with a bifurcated structure. Background Art

[0002] With the increasing attention to sports and fitness in China, more and more people are engaging in sports. Many of these sports can cause damage to the ligaments of the ankle joint. Among the ligaments of the ankle joint, there are many ligaments with a starting point at one joint and an ending point connecting two or more joints, such as the deltoid ligament, the dorsal cuneonavicular ligament, etc. When reconstructing such ligament injuries during surgery, common ligament fixation devices such as medical thread tapes are often used for internal reinforcement or as tension-relieving threads to protect the ligaments from adverse tension damage during the initial stage of implantation. However, for ligaments with a starting point at one joint and an ending point connecting two or more joints, most of the products on the market are single linear fixation devices with a single starting point and a single ending point. When using such a fixation device to fix the above-mentioned ligaments, often two or more fixation devices are required and multiple bone tunnels need to be drilled in the joint for fixation, which greatly increases the complexity of the surgery and the pain of the patient.

[0003] Regarding the above related technologies, the inventor believes that all the fixation devices on the market are single, and when used, two fixation devices need to be combined, increasing the complexity of the surgery, and there is a defect of relatively high surgical difficulty. Summary of the Invention

[0004] In order to achieve the effect of reducing the surgical difficulty, this application provides a ligament reconstruction fixation device with a bifurcated structure.

[0005] The ligament reconstruction fixation device with a bifurcated structure provided by this application adopts the following technical solutions:

[0006] A ligament reconstruction fixation device with a bifurcated structure includes a thread tape and a sheath. There are multiple thread tapes. Multiple fixing blocks are installed on the side wall of the sheath, and the multiple fixing blocks are arranged at intervals. One end of each of the multiple thread tapes penetrates into the sheath from one end of the sheath and penetrates out from the fixing blocks. Each thread tape corresponds to one fixing block. The thread tapes, the sheath, and the fixing blocks are all slidably connected, and both ends of the thread tapes are exposed outside the sheath.

[0007] By adopting the above technical solutions, when surgery is required and the ligament reconstruction fixation device is used, connect the end of the thread tape far from the fixing block to the starting point of one joint, and connect the end of the thread tape close to the fixing block to the ending points of multiple joints. The sheath connects the multiple thread tapes together, thus eliminating the need to connect multiple thread tapes during the surgery, reducing the surgical difficulty, and achieving the effect of reducing the surgical difficulty.

[0008] Optionally, both ends of the fixing block are embedded in the side wall of the sheath, and the fixing block is slidably connected to the sheath, and the sliding direction is set along the length direction of the sheath.

[0009] By adopting the above technical solution, the fixing block is embedded in the side wall of the sheath, and the fixing block is slidably connected to the sheath, so as to adjust the position of the fixing block and the angle between the stopping points of multiple wire bands, enabling the ligament reconstruction fixator to be applicable to more joints, improving the applicable range of the ligament reconstruction fixator, and achieving the effect of improving the applicable range of the ligament reconstruction fixator.

[0010] Optionally, a plurality of vertical holes are formed in the sheath, the length direction of the vertical holes is the same as the length direction of the sheath, each vertical hole corresponds to a fixing block, and the fixing block slides in the fixing hole.

[0011] By adopting the above technical solution, the fixing block slides in the vertical hole. The setting of the vertical hole provides a sliding space for the fixing block and restricts the sliding range of the fixing block, achieving the effect of restricting the sliding range of the fixing block.

[0012] Optionally, a fixing rod is arranged on the sheath, the fixing rod is arranged in a through hole formed in the sheath, one end of the fixing rod is fixedly connected to one end of the through hole formed in the sheath, an extension rod is arranged at the other end of the fixing rod, one end of the extension rod is embedded in the fixing rod, the extension rod slides in the fixing rod, and the exposed end of the extension rod outside the fixing rod is fixedly connected to the fixing block.

[0013] By adopting the above technical solution, the extension rod slides in the fixing rod, and the extension rod is fixedly connected to the fixing block. Therefore, by sliding the extension rod, the fixing block can also be slid, achieving the effect of sliding the fixing block.

[0014] Optionally, another through hole is formed in the fixing rod, a plurality of fixing grooves are formed in the extension rod, and a reinforcing rod is arranged on the fixing rod. The reinforcing rod passes through the through hole in the fixing rod and is embedded in any one of the fixing grooves.

[0015] By adopting the above technical solution, when it is necessary to slide the fixing block to adjust the angle between the stopping points of multiple wire bands, the reinforcing rod is pulled out and the extension rod is slid, thereby sliding the fixing block. When the fixing block is slid to the required position, the reinforcing rod is slid through the through hole in the fixing rod and embedded in the fixing groove, thereby fixing the extension rod and the fixing rod and fixing the fixing block, achieving the effect of fixing the fixing block.

[0016] Optionally, a return spring is sleeved on the reinforcing rod. One end of the return spring is fixedly connected to the reinforcing rod, and the other end of the return spring is fixedly connected to the outer wall of the fixing rod. When the reinforcing rod passes through the through hole in the fixing rod and is embedded in any one of the fixing grooves, the return spring is in a natural state.

[0017] By adopting the above technical solution, when it is necessary to adjust the angle between the end points of the wire band, pull out the reinforcing rod and slide the extension rod, thereby sliding the fixed block, adjusting the position of the fixed block, and adjusting the angle between the end points of the wire band. When the angle between the end points of the wire band is adjusted to the required angle, loosen the reinforcing rod, and under the action of the return spring, the reinforcing rod will bounce back into the fixed groove, thereby fixing the extension rod and the fixed block, preventing the operator from inserting the reinforcing rod back again, achieving the effect of convenience and speed.

[0018] Optionally, a clamping rod is arranged on the fixed block. The clamping rod passes through the fixed block and abuts against the wire band. A reinforcing spring is arranged on the clamping rod. One end of the reinforcing spring is fixedly connected to the clamping rod, and the other end of the reinforcing spring is fixedly connected to the fixed block.

[0019] By adopting the above technical solution, the clamping rod passes through the fixed block and abuts against the wire band, thereby making the connection between the wire band and the fixed block more firm, achieving the effect of increasing the connection stability between the wire band and the fixed block; when it is necessary to slide the wire band in the fixed block, slide the clamping rod to make the clamping rod disengage from the fixed block, thereby sliding the wire band. When the wire band is slid to the required position, loosen the clamping rod, and under the action of the reinforcing spring, the clamping rod will bounce back and abut against the fixed block, achieving the effect of convenience and speed.

[0020] Optionally, a protective sleeve is sleeved on one end of the wire band close to the fixed block. The wire band abuts against the inner wall of the protective sleeve, and the wire band is slidably connected to the protective sleeve. The clamping rod is in close contact with the outer wall of the protective sleeve. At this time, the reinforcing spring is in a stretched state.

[0021] By adopting the above technical solution, the setting of the protective sleeve makes the clamping rod abut against the protective sleeve, thereby protecting the wire band and also facilitating the sliding of the wire band, achieving the effect of protecting the wire band.

[0022] Optionally, the diameter width of the wire band is between 0.3 - 3.0 mm.

[0023] By adopting the above technical solution, the diameter width of the wire band is between 0.3 - 3.0 mm, making the wire band more stable, achieving the effect of increasing the stability of the wire band.

[0024] Optionally, the solidified length at both ends of the sheath is at least 2 mm.

[0025] By adopting the above technical solution, the solidified length at both ends of the sheath is at least 2 mm, so that the sheath is more firm and stable, achieving the effect of increasing the stability of the sheath.

[0026] In summary, the present application includes at least one of the following beneficial technical effects:

[0027] 1. The setting of the wire band, the sheath and the fixed block achieves the effect of reducing the surgical difficulty;

[0028] 2. The arrangement of vertical holes achieves the effect of restricting the sliding range of the fixing block;

[0029] 3. The arrangement of the fixing rod and the extension rod achieves the effect of sliding the fixing block;

[0030] 4. The arrangement of the through hole, the fixing groove and the strengthening rod achieves the effect of fixing the fixing block;

[0031] 5. The arrangement of the return spring, the clamping rod and the reinforcement spring achieves the effect of convenience and quickness;

[0032] 6. The arrangement of the protective sleeve achieves the effect of protecting the wire belt. Brief Description of the Drawings

[0033] Figure 1 is the overall structural schematic diagram of the embodiment of the present application;

[0034] Figure 2 is the partial structural schematic diagram of the embodiment of the present application;

[0035] Figure 3 is Figure 2 the partial enlarged schematic diagram of part A in

[0036] In the figure, 1, wire belt; 2, sheath; 21, fixing block; 22, vertical hole; 23, fixing rod; 24, extension rod; 25, through hole; 26, fixing groove; 27, strengthening rod; 28, return spring; 3, clamping rod; 4, reinforcement spring; 5, protective sleeve. Detailed Description of the Embodiment

[0037] The following further describes the present application in detail Figures 1 - 3 with reference to the accompanying drawings.

[0038] The embodiment of the present application discloses a ligament reconstruction fixator with a bifurcated structure.

[0039] Referring to Figure 1 and Figure 2 , a ligament reconstruction fixator with a bifurcated structure includes a plurality of wire belts 1 and a sheath 2. The wire belt 1 is used to connect the starting point of one joint and the ending points of multiple joints, and the sheath 2 is used to connect the plurality of wire belts 1.

[0040] Referring to Figure 2 , two vertical holes 22 are provided on the side wall of the sheath 2. The length direction of the vertical holes 22 is the same as the length direction of the sheath 2. The two vertical holes 22 are arranged oppositely. The two side walls of the sheath 2 provided with the vertical holes 22 are parallel to each other. A fixing block 21 is provided on the side wall of the sheath 2 provided with the vertical holes 22. One vertical hole 22 corresponds to one fixing block 21. The fixing block 21 is arranged in the vertical hole 22. Both ends of the fixing block 21 are embedded in the side wall of the sheath 2. The fixing block 21 is slidably connected to the side wall of the sheath 2, and the fixing block 21 slides in the vertical hole 22.

[0041] There are two wire belts 1, and each wire belt 1 corresponds to a fixing block 21. One end of each wire belt 1 penetrates into one end of the sheath 2 in the length direction, passes through the fixing block 21, and the wire belt 1 is slidably connected to the sheath 2, and the sliding direction is set along the length direction of the sheath 2. The wire belt 1 is slidably connected to the fixing block 21, and the sliding direction is perpendicular to the length direction of the sheath 2. A protective sleeve 5 is provided at one end of the wire belt 1 close to the fixing block 21. The protective sleeve 5 is sleeved on the wire belt 1, and the wire belt 1 abuts against the inner wall of the protective sleeve 5. The wire belt 1 is slidably connected to the protective sleeve 5. When an operator pulls the wire belt 1, the wire belt 1 can slide, and the part of the wire belt 1 passing through the fixing block 21 is covered by the protective sleeve 5.

[0042] A clamping rod 3 is provided on the fixing block 21. The length direction of the clamping rod 3 is the same as the length direction of the sheath 2. One end of the clamping rod 3 is inserted into the fixing block 21, and the clamping rod 3 is slidably connected to the fixing block 21, and the sliding direction is set along the length direction of the sheath 2. The clamping rod 3 abuts tightly against the protective sleeve 5. A reinforcing spring 4 is sleeved on the clamping rod 3. The reinforcing spring 4 is provided outside the fixing block 21. The length direction of the reinforcing spring 4 is the same as the length direction of the clamping rod 3. One end of the reinforcing spring 4 is fixedly connected to the outer wall of the fixing block 21, and the other end of the reinforcing spring 4 is fixedly connected to the end of the clamping rod 3 exposed outside the fixing block 21. When the clamping rod 3 abuts tightly against the protective sleeve 5, the reinforcing spring 4 is in a stretched state. When the wire belt 1 needs to be replaced, the clamping rod 3 is slid, and then the wire belt 1 is slid out for replacement. After replacement, the clamping rod 3 is released, and under the action of the reinforcing spring 4, the clamping rod 3 is bounced back, thereby fixing the protective sleeve 5 and fixing the wire belt 1.

[0043] Refer to Figure 2 and Figure 3 On the side wall of the through hole opened in the sheath 2, a fixing rod 23 is provided. The length direction of the fixing rod 23 is the same as the length direction of the sheath 2. The fixing rod 23 is arranged inside the through hole on the sheath 2. One end of the fixing rod 23 is fixedly connected to one end of the through hole on the sheath 2. The other end of the fixing rod 23 is provided with an extension rod 24. The length direction of the extension rod 24 is the same as the length direction of the fixing rod 23. One end of the extension rod 24 is embedded in the fixing rod 23, and the extension rod 24 is slidably connected to the fixing rod 23, and the sliding direction is set along the length direction of the fixing rod 23. The end of the extension rod 24 exposed outside the fixing rod 23 is fixedly connected to the fixing block 21.

[0044] One end of the fixing rod 23 close to the fixing block 21 is provided with another through hole. A plurality of fixing grooves 26 are formed in the extension rod 24. The plurality of fixing grooves 26 are arranged at equal intervals along the length direction of the extension rod 24. The length directions of the plurality of fixing grooves 26 are all perpendicular to the length direction of the extension rod 24. A reinforcing rod 27 is arranged on the fixing rod 23. The reinforcing rod 27 passes through the through hole in the fixing rod 23 and is embedded in any one of the fixing grooves 26. The reinforcing rod 27 is slidably connected to the fixing rod 23 and the extension rod 24. The sliding direction is arranged along the length direction of the fixing groove 26. A return spring 28 is sleeved on the reinforcing rod 27. The length direction of the return spring 28 is the same as the length direction of the reinforcing rod 27. One end of the return spring 28 is fixedly connected to the outer wall of the fixing rod 23, and the other end of the return spring 28 is fixedly connected to the end of the reinforcing rod 27 exposed outside the fixing groove 26. When the reinforcing rod 27 passes through the through hole in the fixing rod 23 and is embedded in the fixing groove 26, the return spring 28 is in a natural state.

[0045] When it is necessary to slide the fixing block 21 and adjust the angle between the stop points of the wire belt 1, pull out the reinforcing rod 27, slide the extension rod 24, adjust the overall length of the fixing rod 23 and the extension rod 24, so as to adjust the position of the fixing block 21 and the angle between the stop points of the wire belt 1. When the angle between the stop points of the wire belt 1 is adjusted to the required angle, release the reinforcing rod 27. Under the action of the return spring 28, the reinforcing rod 27 is bounced back into the fixing groove 26 to complete the adjustment.

[0046] Refer to Figure 2 , the diameter width of the wire belt 1 is between 0.3 - 3.0 mm, it can be 0.3 mm or 3.0 mm. The curing length at both ends of the sheath 2 is at least 2 mm, it can be 2 mm.

[0047] The implementation principle of a ligament reconstruction fixator with a bifurcated structure in the embodiment of the present application is as follows: When it is necessary to use the ligament reconstruction fixator to connect joints, according to the distance between the joint stop points, pull out the reinforcing rod 27, slide the extension rod 24, adjust the overall length of the fixing rod 23 and the extension rod 24, and adjust the position of the fixing block 21. When the fixing block 21 is adjusted to the required position, pull out the clamping rod 3, slide the wire belt 1, then slide the protective sleeve 5, release the clamping rod 3, so that the clamping rod 3 and the protective sleeve 5 are in close contact. Then connect one end of the wire belt 1 far from the fixing block 21 to the starting point of the joint, and connect the end of the wire belt 1 passing through the fixing block 21 to the stop point of the joint.

[0048] The embodiments of the present specific implementation manners are all preferred embodiments of the present application, and do not limit the protection scope of the present application accordingly. Therefore, all equivalent changes made according to the structure, shape, and principle of the present application should be covered within the protection scope of the present application.

Claims

1. A ligament reconstruction fixture with a bifurcated structure, characterized in that: The invention comprises a wire band (1) and a sheath (2), wherein a plurality of wire bands (1) are provided, a plurality of fixing blocks (21) are installed on the side wall of the sheath (2), the plurality of fixing blocks (21) are arranged at intervals, one end of each of the wire bands (1) is inserted into one end of the sheath (2) and is inserted out of the fixing block (21), each wire band (1) corresponds to a fixing block (21), the wire band (1) and the sheath (2) and the fixing block (21) are all slidably connected, and both ends of the wire band (1) are exposed outside the sheath (2); Both ends of the fixing block (21) are embedded in the side walls of the sheath (2), the fixing block (21) and the sheath (2) are slidably connected, and the sliding direction is set along the length direction of the sheath (2); The sheath (2) is provided with a plurality of vertical holes (22), the length direction of the vertical holes (22) is the same as the length direction of the sheath (2), each vertical hole (22) corresponds to a fixing block (21), and the fixing block (21) slides in the fixing hole; The sheath (2) is provided with a fixing rod (23), the fixing rod (23) is arranged in a through hole opened on the sheath (2), one end of the fixing rod (23) is fixedly connected to one end of the through hole opened on the sheath (2), and the other end of the fixing rod (23) is provided with an extension rod (24), one end of the extension rod (24) is embedded in the fixing rod (23), the extension rod (24) slides in the fixing rod (23), and one end of the extension rod (24) exposed from the fixing rod (23) is fixedly connected to the fixing block (21); Another through hole is formed on the fixing rod (23), a plurality of fixing grooves (26) are formed on the extension rod (24), a reinforcing rod (27) is provided on the fixing rod (23), and the reinforcing rod (27) passes through the through hole on the fixing rod (23) and is embedded in any one of the fixing grooves (26); A return spring (28) is provided on the ring sleeve of the reinforcing rod (27), one end of the return spring (28) is fixedly connected to the reinforcing rod (27), and the other end of the return spring (28) is fixedly connected to the outer wall of the fixing rod (23). When the reinforcing rod (27) passes through the through hole on the fixing rod (23) and is embedded in any one of the fixing grooves (26), the return spring (28) is in a natural state; a clamping rod (3) is provided on the fixing block (21), the clamping rod (3) passes through the fixing block (21) and abuts against the wire belt (1), and a reinforcing spring (4) is provided on the clamping rod (3), one end of the reinforcing spring (4) is fixedly connected to the clamping rod (3), and the other end of the reinforcing spring (4) is fixedly connected to the fixing block (21); A protective sleeve (5) is provided in a ring at one end of the wire band (1) close to the fixed block (21); the wire band (1) and the inner wall of the protective sleeve (5) are in contact with each other; the wire band (1) and the protective sleeve (5) are slidably connected; the clamping rod (3) and the outer wall of the protective sleeve (5) are in close contact with each other; at this time, the reinforcing spring (4) is in a stretched state.

2. The ligament reconstruction fixture with a bifurcated structure according to claim 1, characterized in that: The diameter width of the wire tape (1) is between 0.3 and 3.0 mm.

3. The ligament reconstruction fixture with a bifurcated structure according to claim 1, characterized in that: The cured length of both ends of the sheath (2) is at least 2 mm.

Images