Meniscus suturing device

Abstract

The utility model relates to the field of medical instruments, in particular to a meniscus suture device which comprises a suture line, a fixing rod, an inserter rod and a push rod. The fixing rod is provided with a limiting channel for a suture line to penetrate through, the limiting channel and the surface of the fixing rod form a limiting hole, the inner hole diameter of the limiting hole along the long end of the fixing rod is defined as a first hole diameter, and the inner hole diameter of the limiting hole along the radial direction of the fixing rod is defined as a second hole diameter. The first aperture is configured to be greater than two times a diameter of the suture and the first aperture is configured to be less than four times the diameter of the suture, and wherein the restriction aperture is configured to be penetrated by two of the segments of the suture. Due to the fact that the angle of the included angle between the first section of suture line and the second section of suture line penetrating through the limiting hole is smaller than the angle of the included angle between the A section of suture line and the B section of suture line in the prior art, the cutting area of the first section of suture line and the second section of suture line on the meniscus is smaller, and secondary damage to the meniscus is smaller or can be neglected.

Description

TECHNICAL FIELD

[0001] The utility model relates to the field of medical apparatus and instruments, concretely is meniscus suture device. BACKGROUND

[0002] In the prior art, a patent document with the name of meniscus suture device and the application number of 202310981539.9 is provided; in the patent document, a technical scheme of pushing the implant provided in the puncture needle to the outside of the puncture needle by a push needle is specifically adopted, wherein the implant is provided with a suture; it can be observed from the drawings in the specification that a relatively large included angle is formed between the two sections of sutures provided in the first implant, and a relatively large included angle is formed between the two sections of sutures provided in the second implant; in the case that the included angle of the two sections of sutures of the implant is relatively large, when the implant is pulled by the sutures and moves in the direction close to the meniscus, the two sections of sutures will cut the meniscus; in the case of cutting action, the two sections of sutures may cut the meniscus, causing secondary damage to the meniscus; the main reason for the cutting action is that the two sections of sutures provided on the implant are arranged in a converging manner from the two ends to the middle of the implant, so that the included angle of the two sections of sutures is relatively large, causing any section of suture to form an inclined cutting action relative to the meniscus.

[0003] Therefore, how to limit the angle of the included angle of the two sections of sutures provided on the implant becomes a technical problem to be solved. CONTENT OF THE UTILITY MODEL

[0004] To solve the technical problem of how to limit the angle of the included angle of the two sections of sutures provided on the implant in the prior art, the utility model provides a meniscus suture device.

[0005] To achieve the above-mentioned purpose, the utility model adopts the technical scheme that:

[0006] According to one aspect of the utility model, a meniscus suture device is provided, which comprises a suture, a fixing rod, an inserter rod and a push rod;

[0007] The inserter rod has a tip portion and a guide channel, the fixing rod is arranged in the guide channel, and the push rod is used to push the fixing rod in the guide channel;

[0008] The fixing rod is provided with a limiting channel for being penetrated by the suture, the limiting channel forms a limiting hole with the surface of the fixing rod, the limiting hole is defined as a first hole diameter along the inner hole diameter of the long end of the fixing rod, the limiting hole is defined as a second hole diameter along the radial direction of the fixing rod, the first hole diameter is greater than or equal to the second hole diameter, the first hole diameter is configured to be greater than twice the diameter of the suture, and the first hole diameter is configured to be less than four times the diameter of the suture, wherein the limiting hole is used for being penetrated by two segments of the suture.

[0009] Further, the fixing rod is also provided with a winding channel for being penetrated by the suture;

[0010] The limiting channel and the winding channel are configured as a tee shape, wherein along the long end of the fixing rod, the winding channel forms a wire passing hole with the two end faces of the fixing rod respectively, and the position of the limiting hole is located between the positions of the two wire passing holes.

[0011] Further, it also includes a housing, a push block, a first limiting block, a second limiting block, a first elastic component and a second elastic component;

[0012] The insertion rod and the housing are detachably connected, wherein the guide channel and the sliding cavity of the housing are communicated;

[0013] The number of the fixing rods is configured to be at least two, all the fixing rods are arranged in sequence in the guide channel, the push block is arranged in the sliding cavity, and the push rod is arranged in the guide channel and the sliding cavity, wherein the push rod is located between the push block and all the fixing rods;

[0014] The housing is provided with a first movable channel for being inserted by the first limiting block and a second movable channel for being inserted by the second limiting block, and the first movable channel and the second movable channel are respectively communicated with the sliding cavity;

[0015] The first elastic component is used to drive the first limiting block in the direction from the outside to the inside of the housing, and the second elastic component is used to drive the second limiting block in the direction from the outside to the inside of the housing;

[0016] The push block is provided with at least one first blocking structure and at least one second blocking structure, the first blocking structure is used to be blocked by the first limiting block, and the second blocking structure is used to be blocked by the second limiting block, and the push block blocked only by the first blocking structure or the second blocking structure is kept in a stationary state relative to the housing;

[0017] The displacement length of the push block from the previous transition to the stationary state to the next transition to the stationary state is the same as the displacement length of one of the fixed rods from the inside of the guide channel to the outside of the guide channel.

[0018] Further, the number of fixed rods is 2, the number of first blocking structures is 1, and the number of second blocking structures is 1.

[0019] Alternatively, the number of fixed rods is 3, the number of first blocking structures is 2, and the number of second blocking structures is 1.

[0020] Alternatively, the number of fixed rods is 4, the number of first blocking structures is 2, and the number of second blocking structures is 2.

[0021] Further, it further comprises a first pressing plate and a second pressing plate.

[0022] The first elastic component and the second elastic component are respectively one of an elastic sheet and a spiral spring.

[0023] The first pressing plate and the second pressing plate are respectively hinged to the shell, wherein the first limiting block is arranged at one end of the first pressing plate, the first elastic component is arranged at the other end of the first pressing plate, and the first elastic component is limited between the shell and the first pressing plate, the second limiting block is arranged at one end of the second pressing plate, the second elastic component is arranged at the other end of the second pressing plate, and the second elastic component is limited between the second pressing plate and the shell.

[0024] The first blocking structure is specifically a first limiting groove recessed in the push block.

[0025] The second blocking structure is specifically a second limiting groove recessed in the push block.

[0026] Further, it further comprises a limiter assembly and a mounting nut.

[0027] The limiter assembly comprises a limiter body and a limiter hose, the limiter body is cylindrical, and the limiter body and the limiter hose are fixedly or detachably connected.

[0028] One part of the inserter rod is sleeved by the limiter assembly.

[0029] The mounting nut is provided with an internal thread, the shell is provided with an external thread, the mounting nut and the shell are threadedly connected, and the limiter body is inserted into the mounting nut.

[0030] Further, the outer circumferential surface of the position limiter body is provided with a plurality of positioning grooves;

[0031] The mounting nut is provided with a mounting through hole, and a ball pin is arranged in the mounting through hole;

[0032] The ball of the ball pin is configured to be clamped into one of the positioning grooves of the position limiter body;

[0033] The end of the insertion rod arranged in the shell is protruding and provided with a positioning boss, and the positioning boss is limited between the mounting nut and the push block.

[0034] Further, a fixed handle is arranged on the shell in an extending manner, and a movable handle is detachably arranged on the shell, wherein the movable handle is hinged to the shell;

[0035] One end of the movable handle is provided with a movable clamping groove, the push block is provided with a receiving cavity and a transmission pin, the transmission pin is in a cylindrical shape, and the transmission pin is fixedly or detachably arranged in the receiving cavity;

[0036] One end of the movable handle having the movable clamping groove is configured to be inserted into the receiving cavity, and the transmission pin is configured to be inserted into the movable clamping groove, wherein the axis of the transmission pin and the axis of the hinged part of the movable handle and the shell are parallel to each other.

[0037] Further, one end of the push block is configured as a first guide part, the first guide part is in a male head shape, the cross-sectional profile of the first guide part is configured as a geometric profile other than a circular profile, and the receiving cavity is located at the first guide part;

[0038] The shell is provided with a second guide part, the second guide part is in a female head shape, and the cross-sectional profile of the second guide part is the same as that of the first guide part;

[0039] The first guide part and the second guide part are configured to be clearance fit.

[0040] Further, an elastic assembly is further included;

[0041] The elastic assembly is located between the movable handle and the fixed handle, and the elastic assembly is detachably connected with the fixed handle and the movable handle respectively, wherein when the fixed handle and the movable handle receive an external force and gradually decrease the included angle, the elastic assembly is used to absorb energy, and when the fixed handle and the movable handle lose the external force or the external force decreases, the elastic assembly is used to release energy.

[0042] The technical scheme has the advantages or beneficial effects as follows:

[0043] The meniscus suturing device provided by the utility model has the angle of the included angle of the first section of suture and the second section of suture penetrating the limiting hole smaller than the angle of the included angle of the A section of suture and the B section of suture in the prior art, so that the first section of suture and the second section of suture in the embodiment have a smaller cutting area on the meniscus, and the secondary damage to the meniscus is smaller or can be ignored. BRIEF DESCRIPTION OF DRAWINGS

[0044] Figure 1 The sectional view of the fixing rod provided by the utility model embodiment is shown in the figure;

[0045] Figure 2 The sectional view of the fixing rod provided by the utility model embodiment is shown in the figure;

[0046] Figure 3 The structural schematic diagram of the fixing rod provided by the utility model embodiment is shown in the figure;

[0047] Figure 4 The structural schematic diagram of the meniscus suturing device provided by the utility model embodiment is shown in the figure;

[0048] Figure 5 The structural schematic diagram of the meniscus suturing device provided by the utility model embodiment is shown in the figure;

[0049] Figure 6 The sectional view of the meniscus suturing device provided by the utility model embodiment is shown in the figure;

[0050] Figure 7 The sectional view of the inserter rod provided by the utility model embodiment is shown in the figure;

[0051] Figure 8 The structural schematic diagram of the pushing block provided by the utility model embodiment is shown in the figure;

[0052] Figure 9 The structural schematic diagram of the pushing block provided by the utility model embodiment is shown in the figure;

[0053] Figure 10 The sectional view of the housing provided by the utility model embodiment is shown in the figure;

[0054] Figure 11 The structural schematic diagram of the housing and the pushing block provided by the utility model embodiment is shown in the figure;

[0055] Figure 12 The structural schematic diagram of the mounting nut provided by the utility model embodiment is shown in the figure;

[0056] Figure 13The utility model discloses a first pressing plate, first limit block, first elastic component, second pressing plate, second limit block and second elastic component's structural schematic diagram for the embodiment of the utility model provides.

[0057] Figure 14 The structure schematic diagram of implant, suture and puncture needle in prior art is provided.

[0058] Figure 15 The reference triangle of the limiting hole, first section suture and second section suture of the utility model is compared with the contrast triangle of two section sutures and implant in prior art. DETAILED DESCRIPTION

[0059] Embodiment 1:

[0060] In the embodiment, a meniscus suture device is provided to solve the technical problem of how to limit the angle of the included angle of two section sutures arranged on the implant in prior art.

[0061] Specifically, referring to Figures 1 to 7 The meniscus suture device of the embodiment comprises suture 100, fixed rod 1, inserter rod 2 and push rod 3.

[0062] The inserter rod 2 has a tip portion 201 and a guide channel 202 (see Figure 7 The fixed rod 1 is arranged in the guide channel 202, and the push rod 3 is used to push the fixed rod 1 in the guide channel 202.

[0063] The fixed rod 1 is provided with a limiting channel 101 for being penetrated by the suture 100, and the limiting channel 101 forms a limiting hole 102 with the surface of the fixed rod 1. Figure 3 The limiting hole 102 is defined as a first hole diameter R1 along the inner hole diameter of the long end of the fixed rod 1 (see Figure 3 The first hole diameter R1 is greater than or equal to the second hole diameter R2, the first hole diameter R1 is configured to be greater than twice the diameter of the suture 100, and the first hole diameter R1 is configured to be less than four times the diameter of the suture 100.

[0064] Wherein, referring to Figure 1 The limiting channel 101 arranged on the fixed rod 1 is used to be penetrated by two sections of the suture 100, because the thread end of the suture 100 is inserted from the outside of the fixed rod 1 to the inside through the limiting channel 101, and then the thread end of the suture 100 is again inserted from the inside of the fixed rod 1 to the outside through the limiting channel 101, so that the two sections of the suture 100 are located in the limiting channel 101.

[0065] It should be understood that after the thread of the suture 100 penetrates the fixed rod 1, the thread of the suture 100 should be knotted with the other segment of the suture 100 located outside the fixed rod 1, and the suture 100 forms a connection relationship with the fixed rod 1, so that the suture 100 and the fixed rod 1 cannot be separated from each other, which is the common knowledge of those skilled in the art.

[0066] With the knot S of the suture 100 as a reference, the two segments of the suture 100 penetrating the limiting channel 101 are defined as the first segment of the suture 110 and the second segment of the suture 120 respectively; when the first segment of the suture 110 and the second segment of the suture 120 are dragged in the direction from the limiting channel 101 to the knot S, the shape composed of the first segment of the suture 110 and the second segment of the suture 120 is configured as two converging line segments, and the interval between the two segments of the suture 100 at the limiting hole 102 is relatively small because the first diameter of the limiting hole 102 is configured to be less than four times the diameter of the suture 100.

[0067] In the prior art (named meniscus suture device, application number 202310981539.9), the suture provided on the implant Z1 (first or second implant Z1) is provided with two segments, for the convenience of understanding, the two segments of the suture are defined as the A segment of the suture X1 and the B segment of the suture X2, which can be known from the drawings of the prior art (see Figure 14 ), after the penetration needle penetrates the meniscus and the fixed rod 1, the A segment of the suture X1 and the B segment of the suture X2 are released to the outside of the penetration needle, the suture is pulled as a whole, so that the A segment of the suture X1 and the B segment of the suture X2 form a converging shape; because the A segment of the suture X1 and the B segment of the suture X2 respectively extend from both ends of the implant Z1 to the inside of the penetration needle, the interval between the A segment of the suture X1 and the B segment of the suture X2 at the implant Z1 is relatively large.

[0068] See Figure 1 , 14 and 15, the fixed rod 1, the first segment of the suture 110 and the second segment of the suture 120 in the present embodiment are compared with the implant Z1, the A segment of the suture X1 and the B segment of the suture X2 in the above-mentioned prior art:

[0069] In the first aspect, the contour composed of the limiting hole 102, the first segment of the suture 110 and the second segment of the suture 120 in the present embodiment is defined as a reference triangle, and correspondingly, the contour composed of the implant Z1, the A segment of the suture X1 and the B segment of the suture X2 in the above-mentioned prior art is defined as a comparison triangle;

[0070] Secondly, on the basis of the foregoing 'first aspect', the knot S of the suture 100 in the present embodiment is defined as the first point 01 of the reference triangle, the intersection of the first segment suture 110 and the limiting hole 102 is defined as the second point 02 of the reference triangle, and the intersection of the second segment suture 120 and the limiting hole 102 is defined as the third point 03 of the reference triangle. Correspondingly, the 'common position of the A segment suture X1 and the B segment suture X2 inserted into the puncture needle' in the prior art is defined as the first point 001 of the comparison triangle, the intersection of the A segment suture X1 and the implant Z1 is defined as the second point 002 of the comparison triangle, and the intersection of the B segment suture X2 and the implant Z1 is defined as the third point 003 of the comparison triangle.

[0071] Thirdly, on the basis of the foregoing'second aspect', if the 'edge' between the second point 02 and the third point 03 of the reference triangle is defined as the first edge, and the other two 'edges' are respectively the second edge and the third edge, then the perpendicular line from the first point 01 to the first edge is the reference perpendicular line L1. Correspondingly, if the 'edge' between the second point 002 and the third point 003 of the comparison triangle is defined as the first edge, and the other two 'edges' are respectively the second edge and the third edge, then the perpendicular line from the first point 001 to the first edge is the comparison perpendicular line L2.

[0072] Fourthly, on the basis of the foregoing 'third aspect', if the length of the fixed rod 1 in the present embodiment is the same as the length of the implant Z1 (the first or second implant Z1) in the prior art, and the length of the reference perpendicular line L1 is the same as the length of the comparison perpendicular line L2, then since the length of the first hole diameter R1 of the limiting hole 102 in the present embodiment is smaller than the length of the fixed rod 1, and the length of the fixed rod 1 in the present embodiment is configured to be the same as the length of the implant Z1 in the prior art, the included angle a between the second edge and the third edge in the reference triangle is smaller than the included angle b between the second edge and the third edge in the comparison triangle. Thus, it is proved that the angle of the 'included angle of the first segment suture 110 and the second segment suture 120' in the present embodiment is smaller than the angle of the 'included angle of the A segment suture X1 and the B segment suture X2' in the prior art, which solves the technical problem of how to limit the angle of the included angle of the two segment sutures arranged on the implant Z1 in the prior art.

[0073] In the actual use of the meniscus suturing device of the present embodiment, in the process that the tip portion 201 of the inserter rod 2 penetrates the meniscus, the fixation rod 1 is released to the outside of the inserter rod 2, and then the suturing thread 100 is pulled so that the fixation rod 1 approaches the meniscus, due to the angle of the included angle of the first segment suturing thread 110 and the second segment suturing thread 120 penetrating the limiting hole 102, which is smaller than the angle of the included angle of the A segment suture X1 and the B segment suture X2 in the prior art, so that the first segment suturing thread 110 and the second segment suturing thread 120 in the present embodiment have a smaller cutting area on the meniscus, resulting in less secondary damage to the meniscus or can be ignored.

[0074] Further, on the basis of the foregoing scheme, how to connect the suturing thread 100 with the fixation rod 1 becomes a technical problem to be solved.

[0075] Referring to Figure 1 Or Figure 2 , the meniscus suturing device of the present embodiment, the fixation rod 1 is further provided with a winding passage 103 for being penetrated by the suturing thread 100;

[0076] The limiting passage 101 and the winding passage 103 are configured in a three-way shape, wherein along the long end of the fixation rod 1, the winding passage 103 forms a thread passing hole 104 with each end face of the fixation rod 1, respectively, and the position of the limiting hole 102 is located between the positions of the two thread passing holes 104.

[0077] Wherein, in the actual connection of the suturing thread 100 with the fixation rod 1, the thread end of one end of the suturing thread 100 first penetrates along the limiting hole 102 to the first thread passing hole 104, so that the thread end passes through the limiting passage 101 and the winding passage 103 near the first thread passing hole 104 during the penetration, and reaches the outside of the winding passage 103; then, the thread end is stretched to the second thread passing hole 104 outside the fixation rod 1; then, the thread end penetrates along the second thread passing hole 104 to the direction of the limiting hole 102, so that the thread end passes through the winding passage 103 near the second thread passing hole 104 and the limiting passage 101 during the penetration, and reaches the outside of the limiting passage 101; after the thread end reaches the outside of the limiting passage 101, the suturing thread 100 is knotted to form a knot S, so as to realize the connection of the suturing thread 100 with the fixation rod 1.

[0078] Further, in the prior art (named Meniscus Suture Device, application number 202310981539.9), when the user pushes the assembly to push the needle and the needle reaches the position of the next time from the position of the previous time, the user is reminded by the impact sound of the prompt sound component that an implant Z1 has been pushed to the outside of the puncture needle at the current time; then, the user needs to make a reverse push to the pushing assembly, so that the pushing assembly moves from the first limiting part to the second limiting part, at this time, if the user does not continue to operate, the pushing assembly is blocked by the third limiting part again, the pushing assembly is blocked by the third limiting part again, which can avoid the phenomenon that the pushing assembly pushes the needle when the meniscus suture device is misused by the user, and further avoid the phenomenon that the implant Z1 currently limited in the puncture needle is misfired by the needle; however, in the above-mentioned prior art, the state that the pushing assembly is switched from the second limiting part to the first limiting part so that the pushing assembly is not blocked by the third limiting part is defined as a non-limiting state, and the state that the pushing assembly is switched from the first limiting part to the second limiting part so that the pushing assembly is blocked by the third limiting part is defined as a limiting state, at least in the process that the meniscus suture device of the above-mentioned prior art is operated by the user, so that the pushing assembly changes from the non-limiting state to the limiting state, the user needs to manually complete the operation of the pushing assembly, which leads to low operation efficiency of the meniscus suture device of the above-mentioned prior art. Therefore, how to improve the operation efficiency of the meniscus suture device in the prior art has become a new technical problem to be solved.

[0079] Referring to Figures 4 to 6 The meniscus suture device of the embodiment further comprises a shell 4, a pushing block 5, a first limiting block 6, a second limiting block 7, a first elastic component 8 and a second elastic component 9.

[0080] The inserter rod 2 and the shell 4 are detachably connected, wherein the guide channel 202 and the sliding cavity 401 of the shell 4 are communicated;

[0081] The number of the fixed rods 1 is configured to be at least two, all the fixed rods 1 are arranged in sequence in the guide channel 202, the pushing block 5 is arranged in the sliding cavity 401, and the pushing rod 3 is arranged in the guide channel 202 and the sliding cavity 401, wherein the pushing rod 3 is located between the pushing block 5 and all the fixed rods 1;

[0082] The shell 4 is provided with a first movable channel 402 for being inserted by the first limiting block 6 and a second movable channel 403 for being inserted by the second limiting block 7 (see Figure 10 ), the first movable channel 402 and the second movable channel 403 are respectively communicated with the sliding cavity 401;

[0083] The first elastic component 8 is used to drive the first limiting block 6 in the direction from the outside to the inside of the shell 4, and the second elastic component 9 is used to drive the second limiting block 7 in the direction from the outside to the inside of the shell 4.

[0084] The pushing block 5 is provided with at least one first blocking structure 501 and at least one second blocking structure 502, the first blocking structure 501 is used to be blocked by the first limiting block 6, and the second blocking structure 502 is used to be blocked by the second limiting block 7, and the pushing block 5 is kept in a static state relative to the shell 4 only by being blocked by the first blocking structure 501 or the second blocking structure 502.

[0085] The displacement length of the pushing block 5 from the previous static state to the next static state is the same as the displacement length of one of the fixed rods 1 from the inside of the guide channel 202 to the outside of the guide channel 202.

[0086] The meniscus suturing device provided by the embodiment realizes one of the purposes, that is, the pushing block 5 realizes step-by-step movement.

[0087] Specifically, referring to Figure 6 The pushing block 5 is used in cooperation with the first limiting block 6 and the second limiting block 7 respectively, so that the pushing block 5 is alternately blocked by the first limiting block 6 and the second limiting block 7 in the displacement process of the pushing block 5 relative to the shell 4; more specifically, if the first blocking structure 501 of the pushing block 5 is blocked by the first limiting block 6 at the previous moment, the second blocking structure 502 of the pushing block 5 is blocked by the second limiting block 7 at the next moment; or, if the second blocking structure 502 of the pushing block 5 is blocked by the second limiting block 7 at the previous moment, the first blocking structure 501 of the pushing block 5 is blocked by the first limiting block 6 at the next moment.

[0088] In the displacement process of the pushing block 5 relative to the shell 4, the pushing block 5 changes from the position of being blocked at the previous moment to the position of being blocked at the next moment, and the distance between the two positions is the step-by-step movement distance of the pushing block 5, or in other words, the pushing block 5 is provided with at least one first blocking structure 501 and at least one second blocking structure 502, so that the pushing block 5 can form at least one step-by-step movement action or step-by-step displacement relative to the shell 4 under the cooperation of the first limiting block 6 and the second limiting block 7.

[0089] After the pushing block 5 forms the step-by-step movement relative to the shell 4, the distance of the step-by-step movement of the pushing block 5 should match the position of the fixed rod 1 located in the guide channel 202 of the inserter rod 2, so that in the process of the step-by-step movement of the pushing block 5, when the pushing rod 3 pushes all the fixed rods 1 in the guide channel 202 of the inserter rod 2 each time, only one fixed rod 1 moves from the guide channel 202 to the wire channel, that is, only one fixed rod 1 falls off from the inserter rod 2.

[0090] In the embodiment, the number of the first blocking structure 501 and the number of the second blocking structure 502 on the pushing block 5 can be configured according to the number of the fixed rod 1.

[0091] Specifically, referring to Figure 6 , the number of the fixed rod 1 of the meniscus suturing device of the embodiment is 2, and the number of the first blocking structure 501 is 1 and the number of the second blocking structure 502 is 1, wherein, along the direction from the inserter rod 2 to the shell 4, the two fixed rods 1 are arranged as the first fixed rod 1 and the second fixed rod 1 respectively, starting from the tip portion 201.

[0092] In the scheme in which the number of the fixed rod 1 is 2, the pushing block 5 has an initial state relative to the shell 4; in the initial state, the first blocking structure 501 is blocked by the first limiting block 6, so that the pushing block 5 is in the first stationary state relative to the shell 4, and the second blocking structure 502 is not blocked by the second limiting block 7; at this time, the two fixed rods 1 are located in the guide channel 202, and the first fixed rod 1 is located between the tip portion 201 and the second fixed rod 1. Since the pushing block 5 is in the stationary state relative to the shell 4 at this time, the pushing block 5 cannot push the pushing rod 3, so that the pushing rod 3 cannot push the two fixed rods 1, thereby avoiding the phenomenon of accidental firing of the first fixed rod 1 by the pushing rod 3. After that, if the user removes the blocking of the first blocking structure 501 by the first limiting block 6, the pushing block 5 changes from the stationary state to the movable state relative to the shell 4, so that the pushing block 5 can push the pushing rod 3, and the pushing rod 3 can push the two fixed rods 1. Then, the second blocking structure 502 is automatically blocked by the second limiting block 7, so that when the pushing block 5 is in the stationary state for the second time, the second fixed rod 1 is still located in the guide channel 202, and the first fixed rod 1 has moved from the guide channel 202 to the outside of the guide channel 202, so that the first fixed rod 1 falls off relative to the inserter rod 2. At this time, the pushing block 5 in the stationary state for the second time cannot continue to push the pushing rod 3, thereby avoiding the phenomenon of accidental firing of the second fixed rod 1 by the pushing rod 3.

[0093] Alternatively, the number of fixed rods 1 is 3 (not shown in the figure), the number of first blocking structures 501 is 2, and the number of second blocking structures 502 is 1, wherein, starting from the tip portion 201 along the direction of the inserter rod 2 to the shell 4, the three fixed rods 1 are arranged as a first fixed rod 1, a second fixed rod 1 and a third fixed rod 1 respectively;

[0094] In the scheme of the number of fixed rods 1 being 3, the pushing block 5 has an initial state relative to the shell 4; the first blocking structure 501 close to the pushing rod 3 is defined as a first first blocking structure 501, and the first blocking structure 501 far from the pushing rod 3 is defined as a second first blocking structure 501; in the initial state, the first first blocking structure 501 is blocked by the first limiting block 6, so that the pushing block 5 is in a first stationary state relative to the shell 4, and the second blocking structure 502 is not blocked by the second limiting block 7, and the second first blocking structure 501 is not blocked by the first limiting block 6; at this time, the three fixed rods 1 are located in the guide channel 202, and along the direction of the inserter rod 2 to the pushing block 5, the first fixed rod 1 is close to the tip portion 201, and the second fixed rod 1 and the third fixed rod 1 are sequentially arranged after the first fixed rod 1; since the pushing block 5 is in a stationary state relative to the shell 4 at this time, the pushing block 5 cannot push the pushing rod 3, so that the pushing rod 3 cannot push the three fixed rods 1, thereby avoiding the phenomenon of the first fixed rod 1 being misfired by the pushing rod 3; after that, if the user removes the blocking of the first first blocking structure 501 by the first limiting block 6, the pushing block 5 changes from the stationary state to a movable state relative to the shell 4, so that the pushing block 5 can push the pushing rod 3, and the pushing rod 3 can push the three fixed rods 1; then, the second blocking structure 502 is automatically blocked by the second limiting block 7, so that when the pushing block 5 is in a second stationary state, the second fixed rod 1 and the third fixed rod 1 are still located in the guide channel 202, and the first fixed rod 1 has moved from the guide channel 202 to outside the guide channel 202, so that the first fixed rod 1 is detached relative to the inserter rod 2; at this time, the pushing block 5 in the second stationary state cannot continue to push the pushing rod 3, thereby avoiding the phenomenon of the second fixed rod 1 being misfired by the pushing rod 3.

[0095] After the pushing block 5 is in the second stationary state, if the user removes the blocking of the second blocking structure 502 by the second limiting block 7, the pushing block 5 changes from the second stationary state to a movable state relative to the shell 4, so that the pushing block 5 can push the pushing rod 3, and the pushing rod 3 can push the two fixed rods 1;

[0096] Then, the second first blocking structure 501 is automatically blocked by the first limiting block 6, so that when the pushing block 5 is in the third static state, the third fixed rod is still in the guide channel 202, and the second fixed rod 1 has been moved from the guide channel 202 to the outside of the guide channel 202, so that the second fixed rod 1 is detached from the inserter rod 2, at this time, the pushing block 5 in the third static state cannot continue to push the pushing rod 3, avoiding the phenomenon of misfiring of the third fixed rod 1 by the pushing rod 3.

[0097] Alternatively, the number of fixed rods 1 is 4 (not shown in the figure), the number of first blocking structures 501 is 2, and the number of second blocking structures 502 is 2, wherein, starting from the tip 201 along the direction of the inserter rod 2 to the shell 4, the four fixed rods 1 are arranged as the first fixed rod 1, the second fixed rod 1, the third fixed rod 1 and the fourth fixed rod 1 respectively.

[0098] In the scheme in which the number of fixed rods 1 is 4, two first blocking structures 501 are respectively a first first blocking structure 501 close to the pushing rod 3 and a second first blocking structure 501 away from the pushing rod 3, and two second blocking structures 502 are respectively a first second blocking structure 502 close to the pushing rod 3 and a second second blocking structure 502 away from the pushing rod 3.

[0099] In the scheme in which the number of fixed rods 1 is 4, the function of the first first blocking structure 501 is the same as that of the first first blocking structure 501 in the scheme in which the number of fixed rods 1 is 3; the function of the first second blocking structure 502 is the same as that of the second blocking structure 502 in the scheme in which the number of fixed rods 1 is 3, and the function of the second first blocking structure 501 is the same as that of the second first blocking structure 501 in the scheme in which the number of fixed rods 1 is 3, so it is not repeated here.

[0100] The difference between the present scheme and the aforementioned 'the number of fixed rods 1 is 3' scheme is that a second second blocking structure 502 and a fourth fixed rod 1 are additionally provided; wherein when the second first blocking structure 501 is blocked by the first limiting block 6, the third fixed rod 1 and the fourth fixed rod 1 are still located in the guide channel 202, and since the pushing block 5 is in a stationary state relative to the shell 4 at this time, the pushing block 5 cannot push the pushing rod 3, so that the pushing rod 3 cannot push the third fixed rod 1 and the fourth fixed rod 1, avoiding the phenomenon of the third fixed rod 1 being accidentally fired by the pushing rod 3; after that, if the user removes the blocking of the second first blocking structure 501 by the first limiting block 6, the pushing block 5 changes from a stationary state to a movable state relative to the shell 4, so that the pushing block 5 can continue to push the pushing rod 3, so that the pushing rod 3 can push the third fixed rod 1 and the fourth fixed rod 1; then, the second second blocking structure 502 is automatically blocked by the second limiting block 7, so that the pushing block 5 is in a fourth stationary state, and the fourth fixed rod 1 is still located in the guide channel 202, while the third fixed rod 1 has moved from the guide channel 202 to outside the guide channel 202, so that the third fixed rod 1 is detached from the inserter rod 2; at this time, the pushing block 5 in the fourth stationary state cannot continue to push the pushing rod 3, avoiding the phenomenon of the fourth fixed rod 1 being accidentally fired by the pushing rod 3.

[0101] It should be understood that after the technical scheme of the present embodiment is seen by those skilled in the art, they can also design and manufacture a meniscus suturing device with 5, 6 or more fixed rods 1, wherein more first blocking structures 501 and more second blocking structures 502 are provided on the pushing block 5.

[0102] It should be understood that in the above-mentioned schemes with 2 fixed rods 1, 3 fixed rods 1 and 4 fixed rods 1, a universal pushing block 5 (not shown in the figure) can be used, which is provided with at least two first limiting structures and two second limiting structures; the significance of the universal pushing block 5 is that when the manufacturer faces the need to manufacture meniscus suturing devices with 2 fixed rods 1, 3 fixed rods 1 and 4 fixed rods 1 respectively, the manufacturer can choose the universal pushing block 5 to reduce the number of pushing block 5 molds; if the pushing block 5 is generated separately to match the schemes with 2 fixed rods 1, 3 fixed rods 1 and 4 fixed rods 1, the pushing block 5 needs three molds, and if the universal pushing block 5 is generated, only one mold is needed; under the condition of reducing the number of pushing block 5 molds, the economic cost of the meniscus suturing device can be effectively reduced.

[0103] In order to realize the pushing block 5 from the previous time of being blocked state, to the next time of being blocked state, and in the process of changing to the next time of being blocked state, the first limiting block 6 automatically blocks the first limiting structure, or the second limiting block 7 automatically blocks the second limiting structure, the first elastic component 8 and the second elastic component 9 are provided;

[0104] The first elastic component 8 is used as the power source of the first limiting block 6, so that the first elastic component 8 can use its own elastic force or tension to force the first limiting block 6 to move in the direction of 'from the outside to the inside of the shell 4', and the second elastic component 9 is used as the power source of the second limiting block 7, so that the second elastic component 9 can use its own elastic force or tension to force the second limiting block 7 to move in the direction of 'from the outside to the inside of the shell 4', so that the first limiting block 6 can automatically block the first blocking structure 501, and the second limiting block 7 can automatically block the second blocking structure 502.

[0105] Specifically, referring to Figure 6 Or Figure 13 The meniscus suture device of the embodiment further comprises a first pressing plate 10 and a second pressing plate 11;

[0106] The first elastic component 8 and the second elastic component 9 are respectively one of elastic sheets and spiral springs;

[0107] The first pressing plate 10 and the second pressing plate 11 are respectively hinged with the shell 4, wherein the first limiting block 6 is arranged at one end of the first pressing plate 10, the first elastic component 8 is arranged at the other end of the first pressing plate 10, and the first elastic component 8 is limited between the shell 4 and the first pressing plate 10, the second limiting block 7 is arranged at one end of the second pressing plate 11, the second elastic component 9 is arranged at the other end of the second pressing plate 11, and the second elastic component 9 is limited between the second pressing plate 11 and the shell 4.

[0108] In the scheme provided with the first pressing plate 10 and the second pressing plate 11, the elastic force of the first elastic component 8 is actually used to force the first limiting block 6 arranged on the first pressing plate 10 to move in the direction of 'from the outside to the inside of the shell 4', and the elastic force of the second elastic component 9 is used to force the second limiting block 7 arranged on the second pressing plate 11 to move in the direction of 'from the outside to the inside of the shell 4'.

[0109] Wherein, referring to Figure 6, the first elastic component 8 is arranged between the shell 4 and the first pressing plate 10, if the elastic force of the first elastic component 8 forces the first pressing plate 10 to rotate, then at the first elastic component 8, the distance between the first pressing plate 10 and the shell 4 gradually increases, while at the first limiting block 6, the distance between the first pressing plate 10 and the shell 4 gradually decreases, so that the first limiting block 6 makes a movement action in the direction of 'from the outside to the inside of the shell 4' relative to the shell 4, so that the first limiting block 6 can automatically block the first blocking structure 501; Correspondingly, when it is needed to release the blocking of the first blocking structure 501 by the first limiting block 6, the user needs to exert a pressure on the first pressing plate 10 at the first elastic component 8, the pressure forces the distance between the first pressing plate 10 at the first elastic component 8 and the shell 4 to decrease, so that the first elastic component 8 accumulates energy, at the same time, the distance between the first pressing plate 10 at the first limiting block 6 and the shell 4 increases, forming a movement action in the direction of 'from the inside to the outside of the shell 4' of the first limiting block 6 relative to the shell 4, and then the first limiting block 6 and the first blocking structure 501 are separated from each other;

[0110] And, referring to Figure 6 , the second elastic component 9 is arranged between the shell 4 and the second pressing plate 11, if the elastic force of the second elastic component 9 forces the second pressing plate 11 to rotate, then at the second elastic component 9, the distance between the second pressing plate 11 and the shell 4 gradually increases, while at the second limiting block 7, the distance between the second pressing plate 11 and the shell 4 gradually decreases, so that the second limiting block 7 makes a movement action in the direction of 'from the outside to the inside of the shell 4' relative to the shell 4, so that the second limiting block 7 can automatically block the second blocking structure 502; Correspondingly, when it is needed to release the blocking of the second blocking structure 502 by the second limiting block 7, the user needs to exert a pressure on the second pressing plate 11 at the second elastic component 9, the pressure forces the distance between the second pressing plate 11 at the second elastic component 9 and the shell 4 to decrease, so that the second elastic component 9 accumulates energy, at the same time, the distance between the second pressing plate 11 at the second limiting block 7 and the shell 4 increases, forming a movement action in the direction of 'from the inside to the outside of the shell 4' of the second limiting block 7 relative to the shell 4, and then the second limiting block 7 and the second blocking structure 502 are separated from each other.

[0111] It should be understood that in other embodiments, a pulling component or a pulling component (not shown in the figure) can also be used, and in cooperation with the pulling force of the first elastic component 8 and the pulling force of the second elastic component 9, the technical effects of the aforementioned 'the scheme of further comprising the first pressing plate 10 and the second pressing plate 11' can also be achieved; when the pulling component is used, the pulling component should form a telescopic pair with the shell 4, and the first elastic component 8 or the second elastic component 9 should be arranged between the pulling component and the shell 4, and the two ends of the first elastic component 8 or the two ends of the second elastic component 9 are respectively connected with the pulling component and the shell 4; when the pulling component is used, the pulling component should form a rotating pair with the shell 4, and the first elastic component 8 or the second elastic component 9 should be arranged between the pulling component and the shell 4, and the two ends of the first elastic component 8 or the two ends of the second elastic component 9 are respectively connected with the pulling component and the shell 4.

[0112] The meniscus suture device of the embodiment, see Figure 8 Or Figure 9 In order to achieve that the pushing block 5 is blocked by the first limiting block 6 and is blocked by the second limiting block 7, preferably, the first blocking structure 501 is specifically set as a first limiting groove recessed in the pushing block 5, and the second blocking structure 502 is specifically set as a second limiting groove recessed in the pushing block 5;

[0113] In the scheme in which the number of the fixing rods 1 is 2, the number of the first limiting grooves is configured to be at least one, and the number of the second limiting grooves is configured to be at least one; wherein all the first limiting grooves are respectively matched with the first limiting block 6, that is, with the movement of the pushing block 5, any first limiting groove can be respectively moved to the position of the first active channel 402, causing the first limiting block 6 to automatically penetrate the first active channel 402 and be inserted into the first limiting groove, so that the first limiting groove is blocked by the first limiting block 6, causing the pushing block 5 to be blocked by the first limiting block 6; and all the second limiting grooves are respectively matched with the second limiting block 7, and with the movement of the pushing block 5, any second limiting groove is respectively matched with the second limiting block 7; with the movement of the pushing block 5, any second limiting groove can be respectively moved to the position of the second active channel 403, causing the second limiting block 7 to automatically penetrate the second active channel 403 and be inserted into the second limiting groove, so that the second limiting groove is blocked by the second limiting block 7, causing the pushing block 5 to be blocked by the second limiting block 7.

[0114] The first blocking structure 501 is set as the first limiting groove, and the second blocking structure 502 is set as the second limiting groove, which has a simple structure and low economic cost.

[0115] It should be understood that in other embodiments, the first blocking structure 501 can also be provided as a first limiting protrusion structure (not shown in the figure), and the second blocking structure 502 can also be provided as a second limiting protrusion structure (not shown in the figure); wherein the profile of the first limiting protrusion protrudes from the profile of the push block 5, and the gap between the first limiting protrusion and the inner wall of the shell 4 is smaller than the gap between the push block 5 and the inner wall of the shell 4, so that the first limiting block 6 can contact the first limiting protrusion in the shell 4, forming that the push block 5 is blocked by the first limiting block 6; the second limiting protrusion is provided in the same way as the first limiting protrusion, and the difference is only that the second limiting protrusion is blocked by the second limiting block 7, and the rest is not repeated here.

[0116] It should be understood that in other embodiments, the first blocking structure 501 can also be provided as the aforementioned first limiting groove, and correspondingly, the second blocking structure 502 can also be provided as the aforementioned second limiting protrusion; or the first blocking structure 501 can also be provided as the aforementioned first limiting protrusion, and correspondingly, the second blocking structure 502 can also be provided as the aforementioned second limiting groove.

[0117] In the prior art (named Meniscus Suture Device, application number 202310981539.9), when the pusher is located in the first limiting portion or the second limiting portion, the pusher is blocked in the radial direction by the first limiting portion or the second limiting portion, so that the pusher cannot move to the inside of the shell along the radial direction of the shell; when the pusher is located in the second limiting portion, the pusher is blocked in the axial direction of the shell by the third limiting portion, and when the pusher is switched from the second limiting portion to the first limiting portion, the pusher is not blocked by the third limiting portion, so that the pusher can push the push needle; when the pusher needs to be switched from the first limiting portion to the second limiting portion, manual operation of the pusher is required, which leads to low operation efficiency of the meniscus suture device of the prior art.

[0118] The pushing block 5 in the meniscus suturing device provided by the embodiment corresponds to the pushing member in the prior art, and the pushing rod 3 corresponds to the pushing needle in the prior art; wherein, the operation step of adjusting the preceding limiting block (the first or second limiting block 7) to be separated from the preceding blocking structure (the first or second blocking structure 502) corresponds to the operation step of adjusting the pushing member in the prior art from the second limiting part to the first limiting part, the operation step of the pushing block 5 pushing the pushing rod 3 corresponds to the step of the pushing member in the prior art pushing the pushing needle; in addition, during the process that the pushing block 5 pushes the pushing rod 3 and then the pushing block 5 performs the stepping movement so that the subsequent blocking structure (the second or first blocking structure 501) of the pushing block 5 is blocked by the subsequent limiting block (the second or first limiting block 6), the subsequent limiting block (the second or first limiting block 6) is in the automatic state of contacting and blocking the subsequent blocking structure (the second or first blocking structure 501), so that the manual operation step of manually operating the pushing member to switch the pushing member from the first blocking part to the second blocking part in the prior art is not needed, the time of the manual operation step is saved, and therefore, the operation efficiency of the meniscus suturing device of the embodiment is higher than the operation efficiency of the meniscus suturing device in the prior art.

[0119] Further, referring to Figures 4 to 6 、 Figures 10 to 12 The meniscus suturing device of the embodiment further comprises a limiter assembly 12 and a mounting nut 13.

[0120] The limiter assembly 12 comprises a limiter body 12-1 and a limiter hose 12-2, the limiter body 12-1 is in a cylindrical shape, and the limiter body 12-1 and the limiter hose 12-2 are fixedly or detachably connected.

[0121] One part of the inserter rod 2 is sleeved by the limiter assembly 12.

[0122] The mounting nut 13 is provided with internal threads, the shell 4 is provided with external threads, and the mounting nut 13 and the shell 4 are screw-connected.

[0123] The limiter body 12-1 is inserted into the mounting nut 13.

[0124] The limiter assembly 12 is entirely sleeved outside the inserter rod 2, and the limiter assembly 12 has the same function as the depth-limiting sleeve in the prior art (the meniscus suturing device, application number 202310981539.9) for limiting the penetration depth of the inserter rod 2.

[0125] Referring to Figure 5The stopper assembly 12 includes a stopper body 12-1 and a stopper hose 12-2, which are configured to be fixedly or detachably connected, for example, the stopper hose 12-2 is sleeved on the stopper body 12-1, and an interference fit is formed between the stopper hose 12-2 and the stopper body 12-1.

[0126] Referring to Figure 4 or Figure 6 The mounting nut 13 is used to connect the stopper assembly 12 and the shell 4, wherein the mounting nut 13 and the shell 4 are connected through threads, facilitating the disassembly and assembly of the mounting nut 13 and the shell 4, and the stopper body 12-1 of the stopper assembly 12 is inserted into the mounting nut 13, and the stopper body 12-1 and the mounting nut 13 are connected through friction, which is convenient for adjusting the position of the stopper body 12-1 relative to the mounting nut 13, and further facilitating the adjustment of the position of the stopper assembly 12 relative to the mounting nut 13.

[0127] Specifically, referring to Figure 5 The outer circumferential surface of the stopper body 12-1 of the meniscus suturing device of the embodiment is provided with a plurality of positioning grooves 12-3;

[0128] The mounting nut 13 is provided with a mounting through hole 13-1 (see Figure 12 ), and the mounting through hole 13-1 is provided with a ball pin 13-2;

[0129] The ball of the ball pin 13-2 is configured to be clamped into one of the positioning grooves 12-3 of the stopper body 12-1;

[0130] The end of the inserter rod 2 arranged in the shell 4 is protruding and provided with a positioning boss 203 (see Figure 7 ), and the positioning boss 203 is limited between the mounting nut 13 and the push block 5.

[0131] Wherein, the specific structure of the ball pin 13-2 is well known to those skilled in the art, and will not be described here; the telescopic ball of the ball pin 13-2 can protrude from the pin portion of the ball pin 13-2 under the elastic force of the spring, but the telescopic ball cannot be separated from the outside of the pin portion, and the telescopic ball can be extruded when subjected to an external force, so that the telescopic ball can retract to the inside of the pin portion;

[0132] When the ball pin 13-2 is in position with the position limiting body 12-1, if the telescopic ball is not extruded by the position limiting body 12-1, the ball pin 13-2 is accommodated in one of the position limiting grooves 12-3, so that the position limiting body 12-1 and the mounting nut 13 form a limited connection structure through the ball pin 13-2 at this time; when the position limiting body 12-1 is subjected to an external force and has a movement tendency relative to the mounting nut 13, the position limiting body 12-1 extrudes the telescopic ball of the ball pin 13-2, forcing the telescopic ball to retract into the pin portion, so that the position limiting body 12-1 and the shell 4 form a connection structure that is not limited by the ball pin 13-2, and the position limiting body 12-1 can move relative to the mounting nut 13.

[0133] The end of the inserter rod 2 is provided with a positioning boss 203 (see Figure 5 ), which is used to position the inserter rod 2 relative to the shell 4 to avoid displacement of the inserter rod 2 relative to the shell 4.

[0134] It should be understood that the push rod 3 is sleeved with a return spring, wherein the push rod 3 is provided with a baffle, the baffle and the return spring are located in the sliding cavity 401 respectively, and the return spring is limited between the positioning boss 203 and the baffle of the push rod 3; during the process that the push block 5 pushes the push rod 3 to move the fixed rod 1 from the inside to the outside of the guide channel 202, the return spring is extruded and shrunk by the baffle and the positioning boss 203, and the return spring accumulates energy; when the push block 5 is in a movable state and does not push the push rod 3, the return spring releases energy, and the return spring pushes the baffle to make the push rod 3 generate a return movement in the direction from the inserter rod 2 to the shell 4.

[0135] Further, referring to Figures 4 to 6 , the meniscus suturing device of the embodiment, the shell 4 is provided with a fixed handle 404 extending therefrom, and the shell 4 is detachably provided with a movable handle 405, wherein the movable handle 405 is hinged to the shell 4;

[0136] One end of the movable handle 405 is provided with a movable clamping groove 405-1, the push block 5 is provided with an accommodating cavity 503 and a transmission pin 504, the transmission pin 504 is in a cylindrical shape, and the transmission pin 504 is fixedly or detachably arranged in the accommodating cavity 503;

[0137] The end of the movable handle 405 with the movable clamping groove 405-1 is configured to be inserted into the accommodating cavity 503, and the transmission pin 504 is configured to be inserted into the movable clamping groove 405-1, wherein the axis of the transmission pin 504 and the axis of the hinge between the movable handle 405 and the shell 4 are parallel to each other.

[0138] In actual use of the meniscus suturing device of the embodiment, the user first presses the first pressing plate 10 or the second pressing plate 11, so that the previous first limiting block 6 is separated from the first blocking structure 501, or the previous second limiting block 7 is separated from the second blocking structure 502, then one hand of the user holds the fixed handle 404 and the movable handle 405, and applies a holding force to the fixed handle 404 and the movable handle 405, so that the movable handle 405 rotates around the axis of the hinge part thereof, and the included angle between the fixed handle 404 and the movable handle 405 becomes smaller; correspondingly, the movable clamping groove 405-1 of the movable handle 405 pushes the transmission pin 504 on the pushing block 5, so that the movable handle 405 pushes the pushing block 5, and the pushing block 5 pushes the pushing rod 3; after the pushing block 5 makes a step-by-step movement, the rear limiting block (the first or second limiting block 7) is automatically inserted into the rear blocking structure (the first or second blocking structure 502), so that the pushing block 5 is blocked by the rear blocking structure and cannot move, at this time, the movable handle 405 is affected by the sliding pair of the movable clamping groove 405-1 and the transmission pin 504, and the movable handle 405 changes from the moving state to the stationary state, so that the included angle between the movable handle 405 and the fixed handle 404 cannot continue to become smaller, and in this process, only one fixed rod 1 is pushed out of the guide channel 202 by the pushing rod 3, and the remaining fixed rods 1 are still limited in the guide channel 202; the above-mentioned action process is repeated, and when the user presses the first pressing plate 10 or the second pressing plate 11 again, so that the limiting block (the first or second limiting block 7) is separated from the blocking structure (the first or second blocking structure 502) again, the user can continue to operate the movable handle 405 and push the remaining fixed rods 1 out of the guide channel 202.

[0139] Further, referring to Figure 5 、 Figure 11 , the meniscus suturing device of the embodiment, wherein the pushing block 5 at one end is configured as a first guide part 505, the first guide part 505 is in the form of a male head, and the cross-sectional profile of the first guide part 505 is configured as a geometric profile other than a circular profile, and the accommodating cavity 503 is located at the first guide part 505;

[0140] The housing 4 is provided with a second guide part 406, the second guide part 406 is in the form of a female head, and the cross-sectional profile of the second guide part 406 is the same as that of the first guide part 505;

[0141] The first guide part 505 and the second guide part 406 are configured as a clearance fit.

[0142] When the first guide part 505 is arranged in the second guide part 406, the first guide part 505 and the second guide part 406 form a positioning state in the radial direction (a direction at a certain angle or perpendicular to the moving direction of the push block 5) and form a sliding pair under the influence of the profile (non-circular profile) of the first guide part 505 and the profile (non-circular profile) of the second guide part 406, the push block 5 cannot be biased or rotated relative to the housing 4, and the push block 5 can only move in a linear direction along the direction from the housing 4 to the inserter rod 2.

[0143] Preferably, the profile of the cross section of the first guide part 505 is one of a semicircular profile, a triangular profile, a rectangular profile, a regular hexagonal profile, a convex letter-shaped profile, and a concave letter-shaped profile.

[0144] It should be understood that the structures referred to by the two descriptions of'male head' and 'female head' in the foregoing are common knowledge known to those skilled in the art.

[0145] Further, referring to Figures 4 to 6 The meniscus suturing device of the embodiment further comprises an elastic assembly 14.

[0146] The elastic assembly 14 is arranged between the movable handle 405 and the fixed handle 404, and is detachably connected with the movable handle 405 and the fixed handle 404, respectively. When the fixed handle 404 and the movable handle 405 receive an external force and gradually decrease the included angle, the elastic assembly 14 is used to absorb energy. When the fixed handle 404 and the movable handle 405 lose the external force or the external force decreases, the elastic assembly 14 is used to release energy.

[0147] The elastic assembly is arranged between the fixed handle 404 and the movable handle 405. When the user's hand applies a holding force to the fixed handle 404 and the movable handle 405, the angle between the movable handle 405 and the fixed handle 404 decreases. At this time, the fixed handle 404 and the movable handle 405 respectively squeeze the elastic assembly 14, so that the elastic assembly 14 absorbs energy. When the holding force applied to the fixed handle 404 and the movable handle 405 disappears or decreases to be lower than the elastic force of the elastic assembly 14, the elastic assembly 14 releases energy and drives the movable handle 405, so that the angle between the movable handle 405 and the fixed handle 404 increases.

[0148] Preferably, referring to Figure 5The elastic assembly 14 specifically comprises a first elastic sheet 14-1, a second elastic sheet 14-2 and an elastic sheet pin 14-3. One end of the first elastic sheet 14-1 is provided with a hinged groove, one end of the second elastic sheet 14-2 is provided with a hinged groove, and the elastic sheet pin 14-3 penetrates the hinged grooves respectively, so that the first elastic sheet 14-1 and the second elastic sheet 14-2 form a hinged structure. Correspondingly, the other end of the first elastic sheet 14-1 is provided with a mounting hole, the other end of the second elastic sheet 14-2 is provided with a mounting hole, the first elastic sheet 14-1 is connected to a threaded hole on the movable handle 405 through a screw penetrating the mounting hole of the first elastic sheet 14-1, and the second elastic sheet 14-2 is connected to a threaded hole on the fixed handle 404 through a screw penetrating the mounting hole of the second elastic sheet 14-2, so that the elastic assembly forms a connecting structure relative to the fixed handle 404 and the movable handle 405.

[0149] It should be understood that in other embodiments, other structures of the elastic assembly 14 can also be adopted, for example, a coil spring (not shown in the figure) can be arranged between the fixed handle 404 and the movable handle 405, or a coil spring (not shown in the figure) can be arranged at the hinge between the housing 4 and the movable handle 405, etc.

[0150] The above description is only preferred embodiments of the present application, and does not limit the patent scope of the present application. Any equivalent structural transformation or direct or indirect application in other related technical fields based on the content of the present application specification and drawings is also included in the patent protection scope of the present application.

Claims

1. A meniscus suture device, characterized in that, Includes sutures, retaining rods, inserter rods, and push rods; The inserter rod has a tip and a guide channel, the fixing rod is disposed in the guide channel, and the push rod is used to push the fixing rod in the guide channel; The fixing rod is provided with a limiting channel for being penetrated by the suture. The limiting channel forms a limiting hole with the surface of the fixing rod. The inner diameter of the limiting hole along the long end of the fixing rod is defined as a first diameter, and the inner diameter of the limiting hole along the radial direction of the fixing rod is defined as a second diameter. The first diameter is greater than or equal to the second diameter. The first diameter is configured to be greater than twice the diameter of the suture and less than four times the diameter of the suture. The limiting hole is used to be penetrated by two segments of the suture.

2. The meniscus suture device according to claim 1, characterized in that, The fixing rod is also provided with a winding channel for being penetrated by the suture thread; The limiting channel and the winding channel are configured in a three-way configuration, wherein, along the long end of the fixing rod, the winding channel forms a wire-passing hole with the two end faces of the fixing rod, and the limiting hole is located between the positions of the two wire-passing holes.

3. The meniscus suture device according to claim 1, characterized in that, It also includes a housing, a push block, a first limiting block, a second limiting block, a first elastic component, and a second elastic component; The inserter rod and the housing are detachably connected, wherein the guide channel communicates with the sliding cavity of the housing; The number of fixing rods is configured to be at least two, and all the fixing rods are arranged sequentially in the guide channel. The pushing block is disposed in the sliding cavity, and the pushing rod is disposed in the guide channel and the sliding cavity, wherein the pushing rod is located between the pushing block and all the fixing rods. The housing is provided with a first movable channel for insertion by the first limiting block and a second movable channel for insertion by the second limiting block, the first movable channel and the second movable channel respectively communicating with the sliding cavity; The first elastic member is used to drive the first limiting block 'in the direction from the outside to the inside of the housing', and the second elastic member is used to drive the second limiting block 'in the direction from the outside to the inside of the housing'; The push block is provided with at least one first blocking structure and at least one second blocking structure. The first blocking structure is used to be blocked by the first limiting block, and the second blocking structure is used to be blocked by the second limiting block. The push block remains stationary relative to the housing when it is blocked only by the first blocking structure or the second blocking structure. The displacement length of the push block from 'the previous static state to the next static state' is the same as the displacement length of one of the fixed rods from 'the inside of the guide channel to the outside of the guide channel'.

4. The meniscus suture device according to claim 3, characterized in that, The number of fixing rods is 2, the number of the first blocking structure is 1, and the number of the second blocking structure is 1; Alternatively, the number of fixing rods is 3, the number of the first blocking structure is 2, and the number of the second blocking structure is 1; Alternatively, the number of fixing rods is 4, the number of the first blocking structure is 2, and the number of the second blocking structure is 2.

5. The meniscus suture device according to claim 3, characterized in that, It also includes a first pressure plate and a second pressure plate; The first elastic component and the second elastic component are respectively configured as one of an elastic sheet and a coil spring; The first pressure plate and the second pressure plate are respectively hinged to the housing. The first limiting block is disposed at one end of the first pressure plate, and the first elastic member is disposed at the other end of the first pressure plate. The first elastic member is restricted between the housing and the first pressure plate. The second limiting block is disposed at one end of the second pressure plate, and the second elastic member is disposed at the other end of the second pressure plate. The second elastic member is restricted between the second pressure plate and the housing. The first blocking structure is specifically a first limiting groove recessed in the pushing block; The second blocking structure is specifically a second limiting groove recessed in the pushing block.

6. The meniscus suture device according to claim 5, characterized in that, It also includes limit switch components and mounting nuts; The limiter assembly includes a limiter body and a limiter hose. The limiter body is cylindrical, and the limiter body and the limiter hose are fixedly or detachably connected. One portion of the inserter rod is fitted by the limiter assembly; The mounting nut has an internal thread, the housing has an external thread, the mounting nut and the housing are threadedly connected, and the limiter body is inserted into the mounting nut.

7. The meniscus suture device according to claim 6, characterized in that, The outer circumferential surface of the limiter body is provided with multiple positioning grooves; The mounting nut is provided with a mounting through hole, and a ball pin is provided in the mounting through hole; The ball of the ball pin is configured to engage with one of the positioning slots of the limiter body; The inserter rod has a positioning boss protruding from its end inside the housing, and the positioning boss is constrained between the mounting nut and the push block.

8. The meniscus suture device according to claim 3, characterized in that, A fixed handle extends from the housing, and a movable handle is detachably provided on the housing, wherein the movable handle is hinged to the housing; One end of the movable handle is provided with a movable slot, and the push block is provided with a receiving cavity and a transmission pin. The transmission pin is cylindrical and is fixedly or detachably disposed in the receiving cavity. One end of the movable handle with the movable slot is configured to be inserted into the receiving cavity, and the transmission pin is configured to be inserted into the movable slot, wherein the axis of the transmission pin is parallel to the axis of the hinge between the movable handle and the housing.

9. The meniscus suture device according to claim 8, characterized in that, The push block at one end is configured as a first guide portion, which is male in shape. The cross-sectional profile of the first guide portion is configured as a geometric profile other than a circular profile. The receiving cavity is located at the first guide portion. The housing is provided with a second guide portion, which is shaped like a female head, and the outline of the cross-section of the second guide portion is the same as the outline of the first guide portion. The first guide portion and the second guide portion are configured for clearance fit.

10. The meniscus suture device according to claim 8, characterized in that, It also includes resilient components; The elastic component is located between the movable handle and the fixed handle, and is detachably connected to both the fixed handle and the movable handle. When the fixed handle and the movable handle receive an external force and the included angle gradually decreases, the elastic component absorbs energy. When the fixed handle and the movable handle lose the external force or the external force decreases, the elastic component releases energy.

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