Anterior cruciate ligament tibial eminence avulsion fracture fixation device

Abstract

The application discloses an anterior cruciate ligament tibial insertion avulsion fracture fixing device, which is used for fixing the avulsion bone block in the avulsion fracture and comprises a first fixing wire, a wire feeder and a first gasket. The first fixing wire comprises a first clamping part and a connecting part, the first clamping part is connected to one end of the connecting part, and the first clamping part is arranged in cross with the connecting part. The wire feeder comprises a needle tube and a push rod in the needle tube, the clamping part can be accommodated in the needle tube, and the push rod can push the first clamping part in the needle tube out of the nozzle of the needle tube. The first gasket has a through hole. The nozzle on the first side can pass through the through hole and be arranged to the second side, and after the push rod pushes the clamping part in the needle tube out of the nozzle on the second side, the clamping part can be clamped on the second wall surface. The application avoids establishing a complex surgical channel, simplifies the whole avulsion fracture surgical process, and makes the repair of the avulsion fracture more easily realized under the arthroscope.

Description

Technical Field

[0001] The present invention relates to the field of medical equipment, and in particular to a fixation device for anterior cruciate ligament tibial insertion point avulsion fracture. Background Art

[0002] Avulsion fractures often occur in the greater trochanter of the femur, the lesser trochanter of the femur, the medial and lateral epicondyles of the humerus, and the knee joint. The avulsed bone fragments are generally attached to important tissues such as the joint capsule or ligaments. At present, hollow screws, steel wires, Kirschner wires, etc. are generally used to assist in the fixation of the avulsed bone fragments in the treatment of avulsion fractures. On the one hand, the avulsed bone fragments are generally small and thin. When using hollow screws, steel wires, Kirschner wires or similar fixation devices to fix the avulsed bone fragments, the bone fragments are easily broken and easily cause secondary damage. On the other hand, when using these fixation devices, if open surgery is used, the popliteal fossa has many blood vessels and nerve bundles, and the surgical risk is high. If a double tibial tunnel is established, the surgical operation is complicated, which is not conducive to treatment. Summary of the Invention

[0003] In order to solve the above problems in the prior art, the present invention provides an anterior cruciate ligament tibial insertion point avulsion fracture fixation device, which can provide convenient and stable fixation for the avulsed bone fragment.

[0004] According to a first aspect of the present invention, there is provided an anterior cruciate ligament tibial attachment point avulsion fracture fixation device for fixing the avulsed bone fragment in an avulsion fracture, the anterior cruciate ligament tibial attachment point avulsion fracture fixation device comprising a first fixing wire, a wire feeder and a first gasket. The first fixing wire comprises a first clamping portion and a connecting portion, the first clamping portion being connected to one end of the connecting portion and being arranged crosswise with the connecting portion. The wire feeder comprises a needle tube and a push rod located in the needle tube, the clamping portion being capable of being accommodated in the needle tube, and after the first fixing wire is accommodated in the needle tube, the end of the connecting portion connected to the first clamping portion is bent so that the first clamping portion is parallel to the connecting portion, and the push rod is capable of pushing the first clamping portion in the needle tube out of the tube mouth of the needle tube. The first gasket has a first wall surface located on the first side and a second wall surface located on the second side, and the first gasket is provided with a through hole penetrating the first wall surface and the second wall surface. The tube opening on the first side can pass through the through hole to the second side. After the push rod pushes the first clamping portion in the needle tube out of the tube opening on the second side, the first clamping portion can be clamped on the second wall.

[0005] In some embodiments, the first fixing line includes a second clamping portion, which is connected to an end of the connecting portion facing away from the first clamping portion and is arranged to cross the connecting portion.

[0006] In some embodiments, the first wall is provided with a card slot, the card slot is used to accommodate the first card portion, and the through hole is connected to the card slot.

[0007] In some embodiments, the first gasket has a plurality of through holes.

[0008] In some embodiments, the wire feeder includes an elastic connecting part and a pushing base, the pushing base is provided with a accommodating cavity and a first channel and a second channel connected to the accommodating cavity, the pushing base includes a push rod passing through the first channel, the elastic connecting part is provided in the accommodating cavity, one end of the elastic connecting part is connected to the pushing part, and the other end is connected to the push rod passing through the second channel, the needle tube is connected to the pushing base, and the wire feeder includes a wire feeding rod, which is passed through the accommodating cavity and the needle tube.

[0009] In some embodiments, the elastic connection portion is configured as a spring.

[0010] In some embodiments, the first gasket is configured as an annular gasket.

[0011] In some embodiments, the anterior cruciate ligament tibial insertion avulsion fracture fixation device further includes a second gasket and a second fixation wire. The second gasket has a third wall located on a first side and a fourth wall located on a second side. The second gasket is provided with a through hole extending through the third and fourth walls. The first, second, third, and fourth walls are all sector-shaped, and the central angles of each corresponding circle are greater than 180 degrees. The first gasket and the second gasket are connected to form an annular gasket, and the inner diameter of the annular gasket is greater than the diameter of the anterior cruciate ligament. The first and second through holes are respectively provided at the connection points between the first and second gaskets. The third and fourth through holes are respectively provided at the connection points between the second gasket and the first gasket. The first through hole corresponds to the third through hole, and the second through hole corresponds to the fourth through hole. The first fixation wire passes through the first and third through holes, and the second fixation wire passes through the second and fourth through holes. The clamping portions of the first and second fixation wires can be clamped to the same side of the annular gasket.

[0012] In some embodiments, the connection between the first gasket and the second gasket has a stepped overlapping portion, and both ends of the second gasket connected to the first gasket have stepped overlapping portions. The first gasket and the second gasket are spliced ​​into an annular gasket through the stepped overlapping portions.

[0013] On the other hand, the present invention also provides another anterior cruciate ligament tibial attachment point avulsion fracture fixation device for fixing the avulsed bone fragment in avulsion fracture. The anterior cruciate ligament tibial attachment point avulsion fracture fixation device includes a first fixing wire, a wire feeder and a first gasket. The first fixing wire includes a clamping portion and a connecting portion, the clamping portion is connected to one end of the connecting portion and is arranged crosswise with the connecting portion. The wire feeder includes a needle tube and a push rod located in the needle tube, the needle tube is provided with a linear track hole passing through the peripheral wall of the needle tube, the clamping portion can be accommodated in the needle tube, and after the clamping portion is accommodated in the needle tube, the connecting portion passes through the needle tube through the linear track hole, and the push rod can push the clamping portion in the needle tube out of the tube mouth of the needle tube. The first gasket, the first gasket has a first wall surface located on the first side and a second wall surface located on the second side, and the first gasket is provided with a through hole passing through the first wall surface and the second wall surface. The tube opening on the first side can pass through the through hole to the second side, and after the push rod pushes the clamping part in the needle tube out of the tube opening on the second side, the clamping part can be clamped on the second wall.

[0014] Beneficial effects:

[0015] The anterior cruciate ligament tibial insertion point avulsion fracture fixation device provided by the present invention includes a first fixing wire, a wire feeder, and a first gasket. The first fixing wire has a first connecting portion and a clamping portion arranged crosswise and capable of being bent, and the clamping portion allows the first fixing wire to be fixed to the first gasket. The first gasket has a through hole, and the first clamping portion can pass through the through hole and be clamped to the first gasket. The wire feeder has a needle tube and a push rod located inside the tube. The needle tube can deliver the fixing wire into the body. After the tube mouth passes through the first through hole, the push rod pushes out the first clamping portion inside the needle tube, allowing the first clamping portion to be clamped to the second wall surface. Since the first clamping portion is clamped to the gasket, and the connecting portion connects the clamping portion and passes through the gasket through hole, the avulsed bone fragment, and the tibia, after the connecting portion is tightened and fixed at one end away from the avulsed bone fragment, the fixing wire can provide continuous pulling force for the avulsed bone fragment to return to the tibia, so that the avulsed bone fragment is pulled back to its original position and can be stably attached to the tibia. The anterior cruciate ligament tibial attachment avulsion fracture fixation device of the present invention avoids the establishment of a complex surgical channel and can complete the fixation of the avulsed bone fragment using only a gasket and a fixation wire, thereby simplifying the entire avulsion fracture surgical process, reducing surgical risks, and making the repair of avulsion fractures easier to achieve under arthroscopy. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] The present invention will be further described below with reference to the accompanying drawings and embodiments;

[0017] Figure 1 A schematic front view of a fixing line according to some embodiments of the present invention;

[0018] Figure 2 Schematic diagram of the main view of the wire feeder of some embodiments of the present invention;

[0019] Figure 3 Schematic top views of gaskets according to some embodiments of the present invention;

[0020] Figure 4 Schematic cross-sectional views of gaskets according to some embodiments of the present invention;

[0021] Figure 5 A three-dimensional schematic diagram of using multiple spacers to fix avulsed bone in some embodiments of the present invention;

[0022] Figure 6 An exploded schematic diagram of the assembly of a first gasket, a second gasket, a first fixing line, and a second fixing line in some embodiments of the present invention;

[0023] Figure 7 For the present invention Figure 6 A schematic top view of an embodiment of an annular gasket arranged around the anterior cruciate ligament to fix the avulsed bone fragment;

[0024] Figure 8 Schematic diagram of the cooperation between the needle and the fixing wire in some embodiments of the present invention.

[0025] Description of reference numerals:

[0026] 100-Anterior cruciate ligament tibial insertion avulsion fracture fixation device;

[0027] 110 - first fixing line; 111 - first clamping portion; 112 - second clamping portion; 113 - connecting portion;

[0028] 120-second fixed line;

[0029] 130 - wire feeder; 131 - needle tube; 1311 - tube mouth; 1312 - wire track hole; 132 - wire feed rod; 133 - elastic connecting part; 1331 - spring; 134 - push base; 1341 - push rod; 1342 - accommodating cavity;

[0030] 140 - first gasket; 141 - first wall; 1411 - slot; 142 - second wall; 143 - first through hole; 144 - overlapping portion; 145 - second through hole;

[0031] 150 - second gasket; 152 - third through hole; 153 - fourth through hole;

[0032] 200-avulsed bone fragment; 210-anterior cruciate ligament; 220-tibia. DETAILED DESCRIPTION

[0033] This section will describe in detail the specific embodiments of the present invention. The preferred embodiments of the present invention are shown in the accompanying drawings. The purpose of the accompanying drawings is to supplement the description of the text part of the specification with graphics, so that people can intuitively and vividly understand each technical feature and the overall technical solution of the present invention, but it should not be understood as a limitation on the scope of protection of the present invention.

[0034] In the description of the present invention, it should be understood that descriptions involving orientations, such as up, down, front, back, left, right, etc., indicating orientations or positional relationships, are based on the orientations or positional relationships shown in the accompanying drawings. They are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation. Therefore, they cannot be understood as limitations on the present invention.

[0035] In the description of the present invention, "several" means one or more, "many" means more than two, "greater than," "less than," and "exceed" are understood to exclude the number itself, while "above," "below," and "within" are understood to include the number itself. The use of "first" and "second" in the description is solely for the purpose of distinguishing technical features and should not be construed as indicating or implying relative importance, implicitly specifying the number of the indicated technical features, or implicitly specifying the order of the indicated technical features.

[0036] In the description of the present invention, unless otherwise clearly defined, terms such as setting, installing, and connecting should be understood in a broad sense, and technicians in the relevant technical field can reasonably determine the specific meanings of the above terms in the present invention based on the specific content of the technical solution.

[0037] Avulsion fractures are common clinically. Avulsion fractures occur when the body is violently pushed or falls, causing the protective muscles, tendons, and ligaments to contract violently. The sudden burst of tension causes the bones attached to these muscles, tendons, and ligaments to break or tear, leading to an avulsion fracture. Avulsion fractures often occur in the greater and lesser trochanters of the femur, the medial and lateral epicondyles of the humerus, and the knee joint. The avulsed bone fragments are typically attached to vital tissues such as the joint capsule or ligaments.

[0038] At present, hollow screws, steel wires, Kirschner wires, etc. are generally used to assist in the fixation of the avulsed bone fragment when treating avulsion fractures. Hollow screws and Kirschner wires can easily damage the epiphyseal plate and, due to the high contact stress, the avulsed bone fragment is prone to fragmentation. When using Kirschner wires to fix the avulsed bone fragment, the Kirschner wire fixation strength is low and the wire is easy to withdraw, resulting in easy failure of fixation. The tail end of the withdrawn Kirschner wire irritates the local soft tissue or even completely pierces the skin, causing infection. When using steel wires to fix the avulsed bone fragment, on the one hand, the steel wire fixation strength is low, and the avulsed bone fragment is prone to secondary displacement after fixation. On the other hand, the steel wire is easy to cut the bone canal and cartilage tissue, causing secondary damage. At the same time, when using these fixation devices, if open surgery is used, the popliteal fossa has many blood vessels and nerve bundles, and the surgical risk is high. If a double tibial channel is established, the surgical operation is complicated and not conducive to treatment. In response to the problems of high surgical difficulty and high risk of existing treatment methods, the present invention proposes an anterior cruciate ligament tibial insertion avulsion fracture fixation device 100 that can conveniently and stably fix the avulsed bone fragment. For ease of description, the present invention describes the anterior cruciate ligament tibial attachment point avulsion fracture fixation device 100 of the present invention by taking its application in treating anterior cruciate ligament tibial attachment point avulsion fracture as an example.

[0039] like Figures 1 to 7 As shown, the present invention provides an anterior cruciate ligament tibial attachment avulsion fracture fixation device 100, which is used to fix the avulsed bone fragment 200 in an avulsion fracture. The anterior cruciate ligament tibial attachment avulsion fracture fixation device 100 of the present invention includes a first fixation wire 110, a wire feeder 130, and a first spacer 140.

[0040] like Figure 1 As shown, the first fixing wire 110 includes a first clamping portion 111 and a connecting portion 113. The first clamping portion 111 is connected to one end of the connecting portion 113 and is arranged crosswise with the connecting portion 113. During arthroscopic surgery, the first clamping portion 111 is pushed by the wire feeder 130 to the side of the first gasket 140 facing away from the avulsion surface and is clamped and fixed to the first gasket 140. The first clamping portion 111 is connected to the connecting portion 113, and the first fixing wire 110 passes through the original bone block, the avulsed bone block 200, and the first through hole 143 of the gasket in sequence along with the needle tube 131. After tightening and fixing the connecting portion 113 according to specific surgical requirements, the first fixing wire 110 can provide the pulling force for the avulsed bone block 200 to return to its original position.

[0041] like Figure 2As shown, the wire feeder 130 includes a needle tube 131 and a push rod 1341 located in the needle tube 131. The first clamping portion 111 can be accommodated in the needle tube 131. After the first fixing line 110 is accommodated in the needle tube 131, the end of the connecting portion 113 connected to the first clamping portion 111 is bent until the first clamping portion 111 is parallel to the connecting portion 113. The push rod 1341 can push the first clamping portion 111 in the needle tube 131 out of the tube mouth 1311 of the needle tube 131. It should be noted that in the present invention, the bending angle between the first clamping portion 111 and the bent connecting portion 113 is between 0 degrees and 10 degrees, and the first clamping portion 111 can be considered to be parallel to the connecting portion 113.

[0042] like Figure 3 as well as Figure 4 As shown, the first gasket 140 has a first wall 141 on the first side and a second wall 142 on the second side. The first gasket 140 is provided with a through hole that penetrates the first wall 141 and the second wall 142. The nozzle 1311 on the first side can pass through the through hole and extend to the second side. After the push rod 1341 pushes the engaging portion in the needle tube 131 out of the nozzle 1311 on the second side, the engaging portion can engage with the second wall 142. During use, the first gasket 140 is placed on the side of the avulsed bone fragment 200 facing away from the avulsion surface and abuts against the avulsed bone fragment 200.

[0043] The specific use of the anterior cruciate ligament tibial attachment point avulsion fracture fixation device 100 of the present invention in the specific arthroscopic surgery for the treatment of avulsion fractures is described as follows. It should be noted that in the following description, the gasket refers to the first gasket, the second gasket, and other gaskets that may be used in different implementations, and the fixation line refers to the first fixation line, the second fixation line, and other fixation lines. During treatment, first, in the first step, a traditional medical locator is used to determine the size and avulsion condition of the avulsed bone fragment at the anterior cruciate ligament tibial attachment point. In the second step, the specific position of the required gasket on the side of the avulsed bone fragment away from the avulsion surface is determined. In the third step, the placement path and fixation method of the fixation line are determined according to the different positions and avulsion conditions of the avulsed bone fragment. In the fourth step, according to the determined placement path of the fixation line, a wire feeder needle tube implantation channel is preset on the tibia and the avulsed bone fragment so that the fixation line can pass through the gasket, the avulsed bone fragment, and the tibia in a straight line. In the fifth step, the gasket is placed at the predetermined position on the avulsed bone fragment. In the sixth step, the wire feeder needle is used to deliver the clamping part of the fixing wire along the preset implantation channel to the side of the gasket away from the torn-off surface. After the needle tube of the wire feeder reaches the side of the gasket away from the torn-off bone block, the push rod pushes the clamping part out and clamps the clamping part to the side of the gasket away from the torn-off bone block. Finally, in the seventh step, the wire feeder is removed and the end of the fixing wire connection part away from the torn-off bone block is fixed. Since the clamping part is clamped to the gasket, and the connecting part connects the clamping part and passes through the through hole of the gasket, the torn-off bone block and the tibia, after the end of the connecting part away from the torn-off bone block is tightened and fixed, the fixing wire can provide the torn-off bone block with continuous pulling force to return to the tibia, so that the torn-off bone block is pulled back to its original position and can be stably fitted with the tibia. Figure 5 As shown, the anterior cruciate ligament tibial attachment avulsion fracture fixation device of the present invention avoids the establishment of a complex surgical channel and can complete the fixation of the avulsed bone fragment using only a gasket and a fixation wire, thereby simplifying the entire avulsion fracture surgical process, reducing surgical risks, and making the repair of avulsion fractures easier to achieve under arthroscopy.

[0044] In some embodiments, one end of the first fixing line 110 is provided with a snap-fit ​​portion for engaging with the gasket, while the other end can be provided with other forms for easier fixation. Depending on different usage requirements, the first fixing line 110 includes a first snap-fit ​​portion 111 and a second snap-fit ​​portion 112. The first snap-fit ​​portion 111 is connected to one end of the connecting portion 113, and the second snap-fit ​​portion 112 is connected to the end of the connecting portion 113 facing away from the first snap-fit ​​portion 111. Both snap-fit ​​portions 112 are arranged crosswise with the connecting portion 113. To meet different usage requirements, different numbers of first gaskets 140 can be used during surgery. To engage with the first and second snap-fit ​​portions 111, 112 of the first fixing line 110, two first gaskets 140 are used in this embodiment. The first first gasket 140 is placed inside the body to push back against the avulsed bone fragment 200. The second first gasket 140 is inserted through the through hole onto the needle tube 131 before the needle tube 131 enters the body. After the needle tube 131 delivers the first clamping portion 111 into the body, it can be withdrawn. After the nozzle 1311 of the needle tube 131 is withdrawn from the body, the second first gasket 140 is pushed toward the nozzle 1311, allowing the second first gasket 140 to contact the skin outside the knee joint and allowing the connecting portion 113 of the first fixing line 110 to pass through the through hole of the second first gasket 140. At this point, the wire feeder 130 is further withdrawn away from the knee joint, allowing the second clamping portion 112 within the needle tube 131 to detach from the needle tube 131. Because the connecting wire passes through the second first gasket 140, the second clamping portion 112 can be attached to the second first gasket 140 after detaching from the needle tube 131. To provide sufficient restoring tension for the avulsed bone fragment 200 and to ensure the first gasket is stably fixed to the side of the avulsed bone fragment facing away from the tear surface, the length of the connecting portion 113 can be set to any desired length. Furthermore, the first fixing line 110 can be secured outside the body by tying a knot or other suitable means.

[0045] In various embodiments, to ensure a more stable engagement of the first engaging portion 111 with the first wall 141, the first wall 141 of the first gasket 140 may be provided with a slot 1411 for accommodating the engaging portion, with the slot 1411 communicating with the through-hole. The slot 1411 can be configured in various shapes as needed. In this embodiment, the slot 1411 is a rectangular hollow slot that conforms to the outer shape of the engaging portion. The engaging portion being confined within the slot 1411 prevents relative movement between the first fixing wire 110 and the first gasket 140, thereby improving the stability of the first gasket 140.

[0046] like Figure 6As shown, in various embodiments, to meet the fixation requirements for different avulsed bone fragments 200, the first spacer 140 may be provided with multiple through-holes. Different avulsed bone fragments 200 require different recovery tensions. When a single spacer through-hole is insufficient for treatment, through-holes may be provided at different locations on the first spacer 140. Each through-hole engages with a snap-fit ​​portion, thereby increasing the tension of the anterior cruciate ligament tibial attachment avulsion fracture fixation device 100. Furthermore, different numbers of first fixation wires 110 may be placed in a single through-hole to enhance the pullback capacity of the anterior cruciate ligament tibial attachment avulsion fracture fixation device 100.

[0047] In different embodiments, the wire feeder 130 may include an elastic connection portion 133 and a pushing base 134. The pushing base 134 includes a pushing portion and a housing cavity 1342 of the elastic connection portion 133. The housing cavity 1342 limits the housing cavity. The housing cavity 1342 is provided with a first channel and a second channel connected to the housing cavity. The first channel and the second channel are relatively arranged on both sides of the housing cavity 1342. The elastic connection portion 133 is arranged in the housing cavity. One end of the elastic connection portion 133 is connected to the pushing portion passing through the first channel, and the other end of the elastic connection portion 133 is connected to the wire feeding rod 132 passing through the second channel. The wire clamping needle is connected to the pushing base 134. The wire feeder 130 includes a wire feeding rod 132, which is inserted into the housing cavity and the needle tube 131. More specifically, the wire feeder 130 is provided with a pushing base 134 configured to be in the shape of a syringe with two holding ends. During use, the pushing portion can be pushed with one hand, and the pushing portion compresses the elastic connecting portion, thereby pushing the wire feeding rod 132 so that the wire feeding rod 132 can be sent out of the pipe mouth 1311. After the pushing force disappears, the elastic connecting portion 133 restores the wire feeding rod 132 to its original position.

[0048] Because the elastic connection part 133 enables the wire feeding rod 132 to return to its original position after the thrust disappears, in different embodiments, the elastic connection part 133 can be other components such as rubber that can realize the reset of the wire feeding rod 132. In this embodiment, the elastic connection part 133 is configured as a spring 1331. When the spring 1331 is compressed, the compressed distance is the distance that the wire feeding rod 132 can push the clamping part in the needle tube 131. After the pressure disappears, under the action of the spring 1331, the wire feeding rod 132 returns to its original position. In order to ensure the compression and recovery effect, multiple springs 1331 can also be provided on the wire feeder 130.

[0049] like Figure 3 as well as Figure 6As shown, in different embodiments, to meet different treatment needs, the first gasket 140 can be configured in different shapes. In this embodiment, the first gasket 140 is configured as an annular gasket. When the first gasket 140 is an annular gasket, the inner hole of the annular gasket can serve as the through hole of the first gasket 140. Similarly, a slot 1411 communicating with the through hole can be provided on the first gasket 140 as needed.

[0050] like Figure 5 As shown, in different embodiments, the number of gaskets and fixation lines used and the matching method may vary according to different usage requirements. In order to achieve a better treatment effect, in this embodiment, the anterior cruciate ligament tibial insertion avulsion fracture fixation device 100 may also include a second gasket 150 and a second fixation line 120. The second gasket 150 has a third wall surface located on the first side and a fourth wall surface located on the second side. The second gasket 150 is provided with a through hole that passes through the third wall surface and the fourth wall surface. The first wall surface 141, the second wall surface 142, the third wall surface and the fourth wall surface are all fan-shaped annular wall surfaces, and the corresponding central angles of each circle are greater than 180 degrees. The first gasket 140 and the second gasket 150 are connected to form an annular gasket. The inner diameter of the annular gasket is greater than the diameter of the anterior cruciate ligament 210, so that the annular gasket can be arranged around the ligament. To facilitate the securement of the first and second gaskets 140, 150 after being joined, a first through-hole 143 and a second through-hole 145 are respectively defined at the connection points between the first and second gaskets 140, 150. A third through-hole 152 and a fourth through-hole 153 are respectively defined at the connection points between the second and first gaskets 150. The first through-holes 143 and the third through-holes 152 correspond one-to-one, while the second through-holes 145 and the fourth through-holes 153 correspond one-to-one. This allows the first fixing wire 110 to pass through both the first and third through-holes 143, 152, and the second fixing wire 120 to pass through both the second and fourth through-holes 145, 153. The clamping portions of the first fixing line 110 and the second fixing line 120 can both be clamped on the same side of the annular gasket, that is, the clamping portions are both located on the side of the gasket away from the tear surface, thereby enabling the anterior cruciate ligament tibial insertion point avulsion fracture fixation device 100 to simultaneously provide a reduction tension for the avulsed bone fragment 200.

[0051] like Figure 6 as well as Figure 7As shown, according to different usage requirements, the first gasket 140 and the second gasket 150 can be connected in different ways to form an annular gasket. The two interface ends of the annular gasket can first be fixed at one end by a hinge, etc., and then the annular gasket as a whole can be placed in the body around the ligament. In this embodiment, the connection between the first gasket 140 and the second gasket 150 has a stepped overlap portion 144, and the two ends of the second gasket 150 connected to the first gasket 140 also have a stepped overlap portion 144. The first gasket 140 and the second gasket 150 are spliced ​​into an annular gasket through the stepped overlap portion 144. It should also be pointed out that in order to meet different treatment needs, fan-shaped annular gaskets corresponding to different central angles can be used separately in addition to being used in combination.

[0052] like Figure 8 As shown, another aspect of the present invention provides a fixation device 100 for anterior cruciate ligament tibial avulsion fractures, including a needle tube 131 with a wire track hole 1312 formed on the peripheral wall. The fixation device 100 for anterior cruciate ligament tibial avulsion fractures includes a first fixation wire 110, a wire feeder 130, and a first gasket 140. The first fixation wire 110 includes a clamping portion and a connecting portion 113. The clamping portion is connected to one end of the connecting portion 113 and is arranged crosswise with the connecting portion 113. The wire feeder 130 includes a needle tube 131 and a push rod 1341 located within the needle tube 131. The needle tube 131 is provided with a linear track hole 1312 extending through the peripheral wall of the needle tube 131. The clamping portion can be accommodated in the needle tube 131. After the clamping portion is accommodated in the needle tube 131, the connecting portion 113 passes through the linear track hole 1312 and exits the needle tube 131. The push rod 1341 can push the clamping portion within the needle tube 131 out of the tube mouth 1311 of the needle tube 131. A first gasket 140 is provided. The first gasket 140 has a first wall 141 located on a first side and a second wall 142 located on a second side. The first gasket 140 is provided with a through hole extending through the first wall 141 and the second wall 142. The nozzle 1311 on the first side can pass through the through hole and extend to the second side. After the push rod 1341 pushes the clamping portion in the needle tube 131 out of the nozzle 1311 on the second side, the clamping portion can be clamped on the second wall 142. In this embodiment, since the peripheral wall of the needle tube 131 is provided with a wire track hole 1312 that passes through the peripheral wall of the needle tube 131, after the clamping portion is placed in the needle tube 131, the connecting portion 113 can extend out of the needle tube 131 through the wire track hole 1312. The provision of the wire track hole 1312 improves the convenience of the push rod 1341 of the wire feeder 130 in pushing the fixed wire.

[0053] The embodiments of the present invention are described in detail above with reference to the accompanying drawings. However, the present invention is not limited to the above embodiments. Various changes can be made within the scope of knowledge possessed by ordinary technicians in the technical field without departing from the scope of the present invention.

Claims

1. A fixation device for anterior cruciate ligament tibial insertion avulsion fracture, used for fixing the avulsed bone fragment in avulsion fracture, characterized in that: The anterior cruciate ligament tibial insertion point avulsion fracture fixation device comprises: a first fixing line, the first fixing line comprising a first clamping portion and a connecting portion, the first clamping portion being connected to one end of the connecting portion and arranged to cross the connecting portion; A wire feeder comprising a needle tube and a push rod located within the needle tube, wherein the first fixed wire can be accommodated in the needle tube, and after the first clamping portion is accommodated in the needle tube, the end of the connecting portion connected to the first clamping portion is bent until the first clamping portion is parallel to the connecting portion, and the push rod can push the first clamping portion within the needle tube out of the tube mouth of the needle tube; and a first gasket, the first gasket having a first wall surface located on a first side and a second wall surface located on a second side, the first gasket being provided with a through hole penetrating the first wall surface and the second wall surface; The tube opening on the first side can pass through the through hole to the second side, and after the push rod pushes the first clamping portion in the needle tube out of the tube opening on the second side, the first clamping portion can be clamped on the second wall surface.

2. The anterior cruciate ligament tibial insertion avulsion fracture fixation device according to claim 1, characterized in that: The first fixing line includes a second clamping portion, which is connected to an end of the connecting portion away from the first clamping portion and is arranged to cross the connecting portion.

3. The anterior cruciate ligament tibial insertion avulsion fracture fixation device according to claim 1, characterized in that: The first wall surface is provided with a card slot, the card slot is used to accommodate the first clamping portion, and the through hole is communicated with the card slot.

4. The anterior cruciate ligament tibial insertion avulsion fracture fixation device according to claim 1, characterized in that: The first gasket has a plurality of through holes.

5. The anterior cruciate ligament tibial insertion avulsion fracture fixation device according to claim 1, characterized in that: The wire feeder includes an elastic connecting part and a pushing base, the pushing base is provided with an accommodating cavity and a first channel and a second channel connected to the accommodating cavity, the pushing base includes a pushing part passing through the first channel, the elastic connecting part is provided in the accommodating cavity, one end of the elastic connecting part is connected to the pushing part, and the other end is connected to the push rod passing through the second channel, the needle tube is connected to the pushing base, and the wire feeder includes a wire feeding rod, which is passed through the accommodating cavity and the needle tube.

6. The anterior cruciate ligament tibial insertion avulsion fracture fixation device according to claim 5, characterized in that: The elastic connection portion is configured as a spring.

7. The anterior cruciate ligament tibial insertion avulsion fracture fixation device according to claim 1, characterized in that: The first gasket is configured as an annular gasket.

8. The anterior cruciate ligament tibial insertion avulsion fracture fixation device according to claim 1, characterized in that: The anterior cruciate ligament tibial insertion point avulsion fracture fixation device further includes a second gasket and a second fixing line, the second fixing line includes a second clamping portion and a second connecting portion, the second clamping portion is connected to one end of the second connecting portion and is arranged crosswise with the second connecting portion; The second gasket has a third wall surface and a fourth wall surface, and the second gasket is provided with a through hole penetrating the third wall surface and the fourth wall surface; The first wall surface, the second wall surface, the third wall surface, and the fourth wall surface are all fan-shaped wall surfaces, and the corresponding central angles are all greater than 180 degrees. The first gasket and the second gasket are connected to form an annular gasket. The inner hole diameter of the annular gasket is greater than the diameter of the anterior cruciate ligament. A first through hole and a second through hole are respectively provided at the connection points of the first gasket and the second gasket at both ends, and a third through hole and a fourth through hole are respectively provided at the connection points of the second gasket and the first gasket at both ends, the first through hole and the third through hole correspond one-to-one, the second through hole and the fourth through hole correspond one-to-one, the first fixing line passes through the first through hole and the third through hole, the second fixing line passes through the second through hole and the fourth through hole, and the clamping parts of the first fixing line and the second fixing line can be clamped on the same side of the annular gasket.

9. The anterior cruciate ligament tibial insertion avulsion fracture fixation device according to claim 8, characterized in that: The connection between the first gasket and the second gasket has a stepped overlapping portion, and the second gasket has stepped overlapping portions at both ends where it is connected to the first gasket. The first gasket and the second gasket are spliced ​​into the annular gasket through the overlapping portions.

10. A fixation device for anterior cruciate ligament tibial insertion avulsion fracture, used for fixing the avulsed bone fragment in avulsion fracture, characterized in that: The anterior cruciate ligament tibial insertion point avulsion fracture fixation device comprises: a first fixing line, the first fixing line comprising a clamping portion and a connecting portion, the clamping portion being connected to one end of the connecting portion and arranged to cross the connecting portion; The thread feeder comprises a needle tube and a push rod located in the needle tube, the needle tube is provided with a linear track hole penetrating the peripheral wall of the needle tube, the clamping portion can be accommodated in the needle tube, and after the clamping portion is accommodated in the needle tube, the connecting portion passes through the linear track hole and out of the needle tube, and the push rod can push the clamping portion in the needle tube out of the tube mouth of the needle tube; and a first gasket, the first gasket having a first wall surface located on a first side and a second wall surface located on a second side, the first gasket being provided with a through hole penetrating the first wall surface and the second wall surface; The tube opening on the first side can pass through the through hole to the second side, and after the push rod pushes the clamping portion in the needle tube out of the tube opening on the second side, the clamping portion can be clamped on the second wall surface.

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