A meniscus suture device

Abstract

The present invention discloses a meniscus suturing device, comprising a gripping portion, a suturing needle, a first slider, a second slider, a first ejector pin, a second ejector pin, a first fixing plate and a second fixing plate; a slide groove is provided on the gripping portion, and a first card slot and a second card slot are provided in the slide groove respectively; the first slider and the second slider are respectively engaged in the first card slot and the second card slot, and can slide along the slide groove for a first set distance and a second set distance respectively; the first ejector pin and the second ejector pin are respectively mounted on the first slider and the second slider, and are both located in a receiving cavity formed by the gripping portion and the suturing needle; the first fixing plate and the second fixing plate are respectively mounted on the first ejector pin and the second ejector pin, and the sliding distance of the first and second fixing plates in the suturing needle is not greater than the first and second set distances. Thus, the sliding distance of the fixing plate can be limited by the setting distance of the slider, so that the insertion depth does not need to be measured in advance, and the convenience of meniscus suturing can be improved.

Description

Technical Field

[0001] The invention relates to the field of medical devices, and in particular to a meniscus suturing device. Background Art

[0002] The meniscus is a semi-lunar cartilage-like tissue located between the femur and tibia of the knee joint. It has the functions of increasing stability, transferring load, absorbing shock, and lubricating joints. However, with the improvement of people's living standards, national fitness is becoming more and more popular, sports injuries are increasing, and meniscus injuries are becoming more and more common.

[0003] Currently, the more mature way to treat meniscus injuries is to suture the meniscus. Meniscus suturing techniques are mainly divided into three types: "from outside to inside", "from inside to outside", and "all inside the joint". The "from outside to inside" suturing method is time-consuming, cannot control the needle exit of the meniscus within the joint, and is not suitable for suturing the posterior horn of the meniscus. The "from inside to outside" suturing method has the risk of damaging nerves and blood vessels and is not suitable for suturing the anterior horn of the meniscus. Therefore, the above two suturing methods have limitations. The "all inside the joint" suturing method is simple, safe, and efficient, and is suitable for suturing the body, posterior horn, and anterior horn of the meniscus. It has become the first choice for meniscus suturing technology.

[0004] "Full-intra-articular" suturing requires special suturing products. Traditional suturing instruments consist of two fixing plates, a suture that connects the two fixing plates and can be tightened, and an inserter. The fixing plates and sutures are fixed in the suture needle at the front end of the inserter. The method of use is to pass the front suture needle on the inserter through the designated position of the meniscus, and after reaching the depth position that can release the implant fixing plate, use the thimble in the inserter suture needle to release and unfold the fixing, then withdraw the thimble, choose to pass through another designated position of the meniscus, and after reaching the depth position that can release the implant fixing plate, use the thimble in the inserter suture needle to release and unfold the fixing again, and finally withdraw the inserter and tighten the suture and cut off the excess suture to complete the operation. For this suturing technology, the most critical thing is to determine the depth of the suture needle inserter on the inserter. The insertion depth of the suture needle needs to be strictly controlled, but it is difficult to judge the insertion depth of the suture needle from the arthroscope. Inserting too deep will cause the suture needle to damage the nerves and blood vessels behind the meniscus, and if the insertion depth is too shallow, it will result in the inability to smoothly release the fixing plate to the designated position.

[0005] Currently, the insertion depth is usually determined by measuring the expected insertion depth of the suture needle under arthroscopy with a depth gauge before insertion. After the measurement, the insertion depth of the suture needle needs to be limited to avoid inserting too deep and damaging the nerves and blood vessels behind the meniscus. This measurement and limitation process not only consumes surgical time but also increases the difficulty of the operation. Summary of the invention

[0006] The invention provides a meniscus suturing device to improve the convenience of meniscus suturing.

[0007] In order to achieve the above technical objectives, the present invention adopts the following technical solutions:

[0008] The technical solution of the present invention provides a meniscus suturing device, comprising:

[0009] A gripping portion, wherein the gripping portion has a first hollow inner cavity, a sliding groove is provided on a side wall of the gripping portion, the sliding groove is connected to the first hollow inner cavity, and a first clamping groove and a second clamping groove are respectively provided on two opposite cavity walls of the sliding groove;

[0010] A suturing needle is mounted at one end of the gripping portion, the suturing needle having a second hollow inner cavity, the second hollow inner cavity is connected to the first hollow inner cavity to form a receiving cavity together;

[0011] A first sliding block is detachably engaged in the first slot and slidably cooperates with the slide slot so that the first sliding block can slide a first set distance along the slide slot;

[0012] A second slider is detachably engaged in the second slot and slidably cooperates with the slide slot so that the second slider can slide along the slide slot for a second set distance;

[0013] a first ejector pin, which is inserted into the accommodating cavity, wherein a first end of the first ejector pin is fixed to the first slider, a first fixing plate is inserted into a second end of the first ejector pin, and when the first slider is engaged in the first slot, a distance between an end of the first fixing plate close to the first ejector pin and an end of the suture needle away from the gripping portion is not greater than the first set distance;

[0014] A second ejector pin is inserted into the accommodating cavity, a first end of the second ejector pin is fixed to the second slider, a second fixing plate is inserted into the second end of the second ejector pin, and when the second slider is engaged in the second slot, a distance between an end of the second fixing plate close to the second ejector pin and an end of the suture needle away from the gripping portion is not greater than the second set distance; a suture thread is connected between the first fixing plate and the second fixing plate.

[0015] Preferably, a first elastic member is connected between the first slider and the cavity wall of the gripping portion, and when the first slider is separated from the first slot, the first elastic member pushes the first slider to slide along the slot by the first set distance until the first slider abuts against the cavity wall of the slot;

[0016] A second elastic member is connected between the second slider and the cavity wall of the gripping portion. When the second slider is separated from the second slot, the second elastic member pushes the second slider to slide along the slot for the second set distance until the second slider hits the cavity wall of the slot.

[0017] Preferably, the first elastic member and the second elastic member are both springs, and the springs are in an elastically compressed state.

[0018] Preferably, the first card slot and the second card slot are staggered so that the first set distance is not equal to the second set distance.

[0019] Preferably, a third card slot is further provided in the slide slot, and the third card slot is located on the cavity wall where the first card slot is located, and the position of the third card slot corresponds to the position of the second card slot; the first slider can be separated from the first card slot and engaged with the third card slot.

[0020] Preferably, the first slot has a first protrusion or a first groove on its wall, and the first slider has a first groove or a first protrusion, and when the first slider is engaged in the first slot, the first protrusion engages with the first groove;

[0021] The groove wall of the second slot has a second protrusion or a second groove, and the second slider has a second groove or a second protrusion. When the second slider is engaged in the second slot, the second protrusion is engaged with the second groove.

[0022] Preferably, scale lines are engraved on the outer wall of the gripping portion, and the scale lines are located on both sides of the sliding groove;

[0023] When the first slider moves the first set distance along the slide groove, the end of the first slider away from the first ejector pin is flush with the scale line; when the second slider moves the second set distance along the slide groove, the end of the second slider away from the second ejector pin is flush with the scale line.

[0024] Preferably, the grip portion has textures or protrusions to increase the surface friction coefficient of the grip portion.

[0025] Preferably, the suturing needle comprises a catheter and a needle, the inner diameter of the catheter is larger than the inner diameter of the needle, the first end of the needle is connected to the catheter, and the second end of the needle is a piercing tip;

[0026] When the first slider is engaged in the first slot, the first ejector pin and the first fixing plate are both located in the conduit; when the second slider is engaged in the second slot, the second ejector pin and the second fixing plate are both located in the conduit.

[0027] Preferably, the catheter and the needle are integrally formed.

[0028] Compared with the prior art, the present invention has the following beneficial effects:

[0029] The meniscus suturing device provided by the technical solution of the present invention has a first slider and a second slider respectively engaged in the first slot and the second slot in an unused state. When the meniscus needs to be sutured, the gripping portion is first gripped and the suture needle is inserted into the meniscus, and then the first slider is separated from the first slot. At this time, the first slider can slide along the slot, but because the suture needle is in the meniscus, the first slider can only drive the first ejector pin and the first fixing plate to abut against the end of the suture needle and cannot be completely ejected; then, the gripping portion is continued to be manipulated to make the suture needle penetrate into the meniscus. At the moment when the meniscus is penetrated by the suture needle, the first fixing plate loses resistance. As the first slider slides along the slot for a first set distance, the first fixing plate is completely ejected from the suture needle, thereby completing the implantation of the first fixing plate; then, the first slider is retracted into the first slot and the suture needle is inserted into another position of the meniscus, thereby implanting the second fixing plate in the same way; finally, the suture thread connecting the first fixing plate and the second fixing plate is tightened to complete the suture operation of the meniscus. Therefore, the meniscus suturing device can limit the displacement of the first fixing plate and the second fixing plate in the suturing needle through the first set distance and the second set distance, thereby eliminating the need to measure the insertion depth in advance, thereby improving the convenience of meniscus suturing. BRIEF DESCRIPTION OF THE DRAWINGS

[0030] Figure 1 is a schematic structural diagram of a meniscus suturing device provided by an embodiment of the present invention;

[0031] Figure 2 is a schematic diagram of the structure of the grip portion;

[0032] Figure 3 yes Figure 1 A partial enlarged view of part A;

[0033] Figure 4 This is a schematic diagram of the structure of the suture needle piercing the meniscus;

[0034] Figure 5 is a schematic diagram of the structure of the first fixation plate implanted into the meniscus;

[0035] Figure 6 is a schematic diagram of the structure in which the first slider moves along the slide groove by a first set distance;

[0036] Figure 7 is a schematic diagram of the structure in which the second slider moves along the slide groove by a second set distance;

[0037] Figure 8 is a schematic diagram of the structure of the second fixation plate being implanted into the meniscus;

[0038] Fig. 9 It is a schematic diagram of the structure of suturing the meniscus by using the first fixing plate and the second fixing plate.

[0039] In the accompanying drawings, each reference numeral represents:

[0040] 1. Grip; 11. Slide; 12. Scale line; 111. First card slot; 112. Second card slot; 113. Third card slot; 1111. First protrusion; 1121. Second protrusion; 2. Suture needle; 21. Catheter; 22. Needle; 3. First slider; 4. Second slider; 5. First ejector pin; 6. Second ejector pin; 7. First fixing plate; 8. Second fixing plate; 9. Suture thread; 10. Accommodating cavity; 20. Meniscus. DETAILED DESCRIPTION

[0041] In order to make the purpose, features and advantages of the present invention more obvious and easy to understand, the technical solutions in the embodiments of the present invention will be clearly and completely described below in conjunction with the drawings in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative work are within the scope of protection of the present invention.

[0042] Reference Figures 1 to 9 As shown, a meniscus suturing device provided by an embodiment of the present invention includes: a gripping portion 1, a suturing needle 2, a first slider 3, a second slider 4, a first ejector pin 5, a second ejector pin 6, a first fixing plate 7, a second fixing plate 8 and a suture thread 9.

[0043] The gripping portion 1 has a first hollow inner cavity, a slide groove 11 is provided on the side wall of the gripping portion 1, the slide groove 11 is connected to the first hollow inner cavity, and a first card groove 111 and a second card groove 112 are respectively provided on the two opposite cavity walls of the slide groove 11; the suture needle 2 is installed at one end of the gripping portion 1, the suture needle 2 has a second hollow inner cavity, the second hollow inner cavity is connected to the first hollow inner cavity to jointly form a accommodating cavity 10, and the slide groove 11 is arranged along the length direction of the suture needle 2; the first slider 3 is detachably engaged in the first card groove 111 and slidably cooperates with the slide groove 11, and when the first slider 3 is separated from the first card groove 111, it can slide a first set distance in the slide groove 11 in a direction close to the suture needle 2; the second slider 4 is detachably engaged in the second card groove 112 and slidably cooperates with the slide groove 11, and when the second slider 4 is separated from the second card groove 112, it can slide a first set distance in the direction close to the suture needle 2 The first thimble 5 is inserted into the accommodating cavity 10, and the first end of the first thimble 5 is fixed to the end of the first slider 3 close to the suture needle 2, and the second end of the first thimble 5 is inserted with a first fixing plate 7. When the first slider 3 is engaged in the first slot 111, the distance between the end of the first fixing plate 7 close to the first thimble 5 and the end of the suture needle 2 away from the holding portion 1 is not greater than the first set distance; the second thimble 6 is inserted into the accommodating cavity 10, and the first end of the second thimble 6 is fixed to the end of the second slider 4 close to the suture needle 2, and the second end of the second thimble 6 is inserted with a second fixing plate 8. When the second slider 4 is engaged in the second slot 112, the distance between the end of the second fixing plate 8 close to the second thimble 6 and the end of the suture needle 2 away from the holding portion 1 is not greater than the second set distance; a suture thread 9 is connected between the first fixing plate 7 and the second fixing plate 8.

[0044] In this embodiment, specifically, refer to Figure 1 and Figure 2 As shown, in the unused state, the first slider 3 and the second slider 4 are respectively engaged in the first slot 111 and the second slot 112. When the meniscus needs to be sutured, refer to Figure 4 As shown, first, hold the gripping portion 1 tightly and insert the suture needle 2 into the meniscus 20, then separate the first slider 3 from the first slot 111, at this time, the first slider 3 can slide along the slot 11, but because the suture needle 2 is in the meniscus 20, the first slider 3 can only drive the first ejector 5 and the first fixing plate 7 to push against the end of the suture needle 2, and cannot be completely ejected; then, refer to Figure 5 As shown, the gripping part 1 is continued to be manipulated to make the suture needle 2 penetrate into the meniscus 20. When the meniscus 20 is penetrated by the suture needle 2, the first fixing plate 7 loses resistance. As the first slider 3 slides along the slide groove 11 for a first set distance, the first fixing plate 7 is completely ejected from the suture needle 2, thereby completing the implantation of the first fixing plate 7. At this time, the first slider 3 is in Figure 6Then, refer to Figure 7 and Figure 8 As shown, the first slider 3 is returned to the first slot 111 and the suture needle 2 is inserted into another position of the meniscus 20, so as to implant the second fixing plate 8 in the same way; finally, referring to Fig. 9 As shown, tighten the suture thread 9 connecting the first fixing plate 7 and the second fixing plate 8 to complete the meniscus suturing operation. Thus, the meniscus suturing device can limit the displacement of the first fixing plate 7 and the second fixing plate 8 in the suturing needle 2 through the first set distance and the second set distance, so that there is no need to measure the insertion depth in advance, which can improve the convenience of meniscus suturing.

[0045] In the above embodiment, preferably, a first elastic member (not shown in the figure) is connected between the first slider 3 and the cavity wall of the gripping portion 1, and when the first slider 3 is separated from the first slot 111, the first elastic member pushes the first slider 3 to slide along the slot 11 for a first set distance until the first slider 3 hits the cavity wall of the slot 11; a second elastic member (not shown in the figure) is connected between the second slider 4 and the cavity wall of the gripping portion 1, and when the second slider 4 is separated from the second slot 112, the second elastic member pushes the second slider 4 to slide along the slot 11 for a second set distance until the second slider 4 hits the cavity wall of the slot 11. Specifically, in this embodiment, when the first fixing plate 7 needs to be implanted, as the first slider 3 is separated from the first slot 111, the first elastic member will apply a force to the first slider 3, thereby pushing the first slider 3 to the bottom of the slot 11 in the direction close to the suture needle 2, so as to limit the first slider 3 and prevent the first fixing plate 7 from shaking, so that the first fixing plate 7 can automatically pop out of the suture needle 2 completely, without applying an external force to the first slider 3 separately; similarly, when the second fixing plate 8 needs to be implanted, the second elastic member does not need to apply an external force to the second slider 4 separately. Therefore, after the operator inserts the suture needle 2 into the meniscus, it is only necessary to slide the first slider 3 or the second slider 4 out of the first slot 111 or the second slot 112, and then as the suture needle 2 gradually penetrates into the meniscus 20, as long as the suture needle 2 penetrates the meniscus 20, the first fixing plate 7 or the second fixing plate 8 will be automatically implanted into the meniscus 20, thereby further improving the convenience of operation when suturing the meniscus.

[0046] In the above embodiment, preferably, both the first elastic member and the second elastic member are springs, and the springs are in an elastically compressed state. Specifically, in this embodiment, a spring is used as an elastic member, on the one hand because the cost of the spring is low, and on the other hand because the spring has good elastic properties. At the same time, in this embodiment, the elastic compression of the first elastic member is greater than the first set distance, so as to ensure that the first slider 3 can be against the cavity wall of the slide groove 11 after sliding the first set distance, so as to limit the first slider 3 and avoid the first fixing plate 7 from shaking during implantation, thereby improving the implantation stability of the first fixing plate 7; similarly, the elastic compression of the second elastic member is greater than the second set distance, thereby improving the implantation stability of the second fixing plate 8. It can be understood that the use of a spring as an elastic member in this embodiment is only one of the better implementations. In other embodiments, other elastic products can also be selected as elastic members as needed.

[0047] Reference Figure 2 As shown, in the above embodiment, preferably, the first slot 111 and the second slot 112 are staggered so that the first set distance is not equal to the second set distance. In specific use, since the first slot 111 and the second slot 112 are staggered with each other, when the operator sutures the meniscus 20, the operator can perform the order of implantation of the fixing plates according to the different positions of the first slot 111 and the second slot 112. For example: in this embodiment, the first set distance is shorter, that is, the sliding distance of the first fixing plate 7 in the slide groove 11 is shorter; the second set distance is longer, that is, the sliding distance of the second fixing plate 8 in the slide groove 11 is longer. When the fixing plate needs to be implanted, the first fixing plate 7 with a shorter sliding distance can be implanted first, and then the second fixing plate 8 with a longer sliding distance can be implanted, so that the operator can avoid repeated implantation of the fixing plate to a certain extent.

[0048] In the above embodiment, preferably, a third slot 113 is further provided in the slide groove 11, and the third slot 113 is located on the cavity wall where the first slot 111 is located, and the position of the third slot 113 corresponds to the position of the second slot 112; the first slider 3 can be separated from the first slot 111 and engaged with the third slot 113. Specifically, in this embodiment, when the first fixing plate 7 needs to be implanted, the first slider 3 is first separated from the first slot 111, and the first fixing plate 7 is implanted into the meniscus 20 as the first elastic member elastically stretches, and then the first slider 3 retreats to the position where the third slot 113 is located and is engaged in the third slot 113. Therefore, when the operator is in use, as long as the first slider 3 is in the first slot 111, it means that the first fixing plate 7 has not been implanted yet, and the first fixing plate 7 needs to be implanted first; when the first slider 3 is in the third slot 113, it means that the implantation of the first fixing plate 7 has been completed, and the second fixing plate 8 needs to be implanted. Therefore, by observing the position of the first slider 3, it is possible to clearly know which fixing plate needs to be implanted, thereby further avoiding the situation where the fixing plate is implanted repeatedly due to confusion of the operator's memory.

[0049] Reference Figure 2 As shown, in the above embodiment, preferably, the first slot 111 has a first protrusion 1111 on the slot wall, the first slider 3 has a first groove (not shown in the figure), and when the first slider 3 is engaged in the first slot 111, the first protrusion 1111 is engaged with the first groove; the second slot 112 has a second protrusion 1121 on the slot wall, the second slider 4 has a second groove (not shown in the figure), and when the second slider 4 is engaged in the second slot 112, the second protrusion 1121 is engaged with the second groove. Specifically, in this embodiment, when the first slider 3 is engaged in the first slot 111, the first slider 3 can be limited and fixed by the mutual engagement of the first protrusion 1111 and the first groove, so as to improve the stability of the engagement between the first slider 3 and the first slot 111; similarly, when the second slider 4 is engaged in the second slot 112, the stability of the engagement between the second slider 4 and the second slot 112 can be improved by the mutual engagement of the second protrusion 1121 and the second groove. It is easy to understand that the first slot 111 may also be provided with a first groove, and accordingly the first slider 3 needs to be provided with a first protrusion, and the second slot 112 may also be provided with a second groove, and accordingly the second slider 4 needs to be provided with a second protrusion. In addition, one of the first slot 111 and the second slot 112 may be provided with a protrusion and the other with a groove, and the specific adaptive selection can be made according to actual needs.

[0050] Reference Figure 2As shown, in the above embodiment, preferably, the outer wall of the gripping portion 1 is engraved with scale lines 12, and the scale lines 12 are located on both sides of the slide groove 11; when the first slider 3 moves along the slide groove 11 for a first set distance, the end of the first slider 3 away from the first ejector pin 5 is flush with the scale lines 12; when the second slider 4 moves along the slide groove 11 for a second set distance, the end of the second slider 4 away from the second ejector pin 6 is flush with the scale lines 12. Specifically, when in use, after the first fixing plate 7 is implanted, the first slider 3 will abut against the cavity wall of the slide groove 11, at which time, the bottom of the first slider 3 is flush with the scale lines 12, and the operator can judge whether the first fixing plate 7 is implanted in place by observing whether the bottom of the first slider 3 is flush with the scale lines 12; similarly, by observing whether the bottom of the second slider 4 is flush with the scale lines 12, it can be judged whether the second fixing plate 8 is implanted in place. Therefore, the scale line 12 can provide an operator with a reference for judgment, so as to help the operator judge whether the fixing plate is implanted in place, thereby avoiding the situation where the needle is withdrawn before the fixing plate is fully implanted.

[0051] In the above embodiment, preferably, the gripping portion 1 has textures or protrusions to increase the surface friction coefficient of the gripping portion 1. During specific use, the operator can grasp the textures or protrusions on the gripping portion 1, thereby improving the stability of the operator's gripping of the gripping portion 1 and avoiding slipping due to sweating.

[0052] In the above embodiment, preferably, the suture needle 2 includes a catheter 21 and a needle 22, the inner diameter of the catheter 21 is larger than the inner diameter of the needle 22, the first end of the needle 22 is connected to the catheter 21, and the second end of the needle 22 is a piercing tip; when the first slider 3 is engaged in the first slot 111, the first ejector 5 and the first fixing plate 7 are both located in the catheter 21; when the second slider 4 is engaged in the second slot 112, the second ejector 6 and the second fixing plate 8 are both located in the catheter 21. Specifically, in this embodiment, the catheter 21 of the suture needle 2 is thicker, and the needle 22 is thinner. When not in use, the ejector and the fixing plate are both located in the catheter 21. When the fixing plate needs to be implanted, only one ejector and one fixing plate can be accommodated in the needle 22 at the same time. The needle 22 is designed to be a thinner structure on the one hand to make it easier to pierce the meniscus 20, and on the other hand to compress the activity space of the ejector and the fixing plate, so as to avoid the ejector and the fixing plate from shaking in the needle 22 as much as possible, which is conducive to improving the stability of the implantation of the fixing plate.

[0053] In the above embodiment, preferably, the catheter 21 and the needle 22 are integrally formed, thereby avoiding the secondary assembly process at a later stage, which is beneficial to improving the overall production efficiency.

[0054] To sum up, the meniscus suturing device provided by the present invention can limit the displacement of the first fixing plate 7 and the second fixing plate 8 in the suture needle 2 through the first set distance and the second set distance, so that there is no need to measure the insertion depth in advance, which can improve the convenience of meniscus suturing; at the same time, through the setting of the first elastic member and the second elastic member, the first fixing plate 7 and the second fixing plate 8 can be automatically implanted into the meniscus, further improving the convenience of meniscus suturing; in addition, the three card slots opened in the slide groove 11 can help the operator to remember the implantation of the fixing plate to avoid repeated implantation of the fixing plate, and the scale lines 12 on both sides of the slide groove 11 provide the operator with a judgment basis to ensure that the fixing plate is implanted in place.

[0055] In the description of this specification, the description with reference to the terms "one embodiment", "some embodiments", "example", "specific example", or "some examples" means that the specific features, structures, materials or characteristics described in conjunction with the embodiment or example are included in at least one embodiment or example of the present invention. Moreover, the specific features, structures, materials or characteristics described may be combined in any one or more embodiments or examples in a suitable manner. In addition, those skilled in the art may combine and combine different embodiments or examples described in this specification and the features of different embodiments or examples, unless they are contradictory.

[0056] In addition, the terms "first" and "second" are used for descriptive purposes only and should not be understood as indicating or implying relative importance or implicitly indicating the number of the indicated technical features. Therefore, the features defined as "first" and "second" may explicitly or implicitly include at least one of the features. In the description of the present invention, the meaning of "plurality" is two or more, unless otherwise clearly and specifically defined.

[0057] The above is only a specific embodiment of the present invention, but the protection scope of the present invention is not limited thereto. Any person skilled in the art can easily think of changes or substitutions within the technical scope disclosed by the present invention, which should be included in the protection scope of the present invention. Therefore, the protection scope of the present invention shall be based on the protection scope of the claims.

Claims

1. A meniscus suturing device, characterized in that: include: A gripping portion, a suture needle, a first slider, a second slider, a first ejector pin and a second ejector pin, wherein: The grip portion has a first hollow inner cavity, a slide groove is provided on a side wall of the grip portion, the slide groove is connected to the first hollow inner cavity, and a first clamping groove and a second clamping groove are respectively provided on two opposite cavity walls of the slide groove; The suturing needle is mounted at one end of the gripping portion, and the suturing needle has a second hollow inner cavity, and the second hollow inner cavity is connected to the first hollow inner cavity to form a receiving cavity together; The first slider is detachably engaged in the first slot and slidably cooperates with the slide slot, so that the first slider can slide along the slide slot for a first set distance; The second slider is detachably engaged in the second slot and slidably cooperates with the slide slot, so that the second slider can slide along the slide slot for a second set distance; The first ejector pin is inserted into the accommodating cavity, the first end of the first ejector pin is fixed to the first slider, the second end of the first ejector pin is inserted with a first fixing plate, and when the first slider is engaged in the first slot, the distance between the end of the first fixing plate close to the first ejector pin and the end of the suture needle away from the gripping portion is not greater than the first set distance; The second ejector pin is inserted into the accommodating cavity, the first end of the second ejector pin is fixed to the second slider, the second end of the second ejector pin is inserted with a second fixing plate, and when the second slider is engaged in the second slot, the distance between the end of the second fixing plate close to the second ejector pin and the end of the suture needle away from the gripping portion is not greater than the second set distance; a suture thread is connected between the first fixing plate and the second fixing plate; The first card slot and the second card slot are staggered so that the first set distance is not equal to the second set distance; The gripping portion has textures or convex points to increase the surface friction coefficient of the gripping portion.

2. The meniscus suturing device according to claim 1, characterized in that: A first elastic member is connected between the first slider and the cavity wall of the gripping portion, and when the first slider is separated from the first slot, the first elastic member pushes the first slider to slide along the slot by the first set distance until the first slider abuts against the cavity wall of the slot; A second elastic member is connected between the second slider and the cavity wall of the gripping portion. When the second slider is separated from the second slot, the second elastic member pushes the second slider to slide along the slot for the second set distance until the second slider hits the cavity wall of the slot.

3. The meniscus suturing device according to claim 2, characterized in that: The first elastic member and the second elastic member are both springs, and the springs are in an elastically compressed state.

4. The meniscus suturing device according to claim 1, characterized in that: A third card slot is also provided in the slide slot, and the third card slot is located on the cavity wall where the first card slot is located, and the position of the third card slot corresponds to the position of the second card slot; the first sliding block can be separated from the first card slot and engaged with the third card slot.

5. The meniscus suturing device according to claim 1, characterized in that: The first slot has a first protrusion or a first groove on its wall, and the first slider has a first groove or a first protrusion. When the first slider is engaged in the first slot, the first protrusion engages with the first groove. The groove wall of the second slot has a second protrusion or a second groove, and the second slider has a second groove or a second protrusion. When the second slider is engaged in the second slot, the second protrusion is engaged with the second groove.

6. The meniscus suturing device according to claim 1, characterized in that: The outer wall of the grip portion is engraved with scale lines, and the scale lines are located on both sides of the slide groove; When the first slider moves the first set distance along the slide groove, the end of the first slider away from the first ejector pin is flush with the scale line; when the second slider moves the second set distance along the slide groove, the end of the second slider away from the second ejector pin is flush with the scale line.

7. The meniscus suturing device according to claim 1, characterized in that: The suturing needle comprises a catheter and a needle, the inner diameter of the catheter is larger than the inner diameter of the needle, the first end of the needle is connected to the catheter, and the second end of the needle is a piercing tip; When the first slider is engaged in the first slot, the first ejector pin and the first fixing plate are both located in the conduit; when the second slider is engaged in the second slot, the second ejector pin and the second fixing plate are both located in the conduit.

8. The meniscus suturing device according to claim 7, characterized in that: The catheter and the needle are integrally formed.

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