Meniscus suturing device

Abstract

The invention 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 invention relates to the field of medical instruments, in particular to a meniscus suturing device. Background Art

[0002] In the prior art, a patent document named meniscus suture device and application number 202310981539.9 is provided; in the patent document, a technical solution is specifically adopted in which a push needle is used to push an implant set in the puncture needle to the outside of the puncture needle, wherein a suture is provided on the implant; it can be observed from the drawings in its specification that a relatively large angle is formed between the two sections of suture set in the first implant, and a relatively large angle is formed between the two sections of suture set in the second implant; when the angle between the two sections of suture of the implant is relatively large, when the implant is pulled by the suture so that the implant moves in the direction close to the meniscus, the two sections of suture will produce a cutting action on the meniscus; in the case of a cutting action, the two sections of suture may split the meniscus, causing secondary damage to the meniscus; the main reason for the cutting action is that the two sections of suture set on the implant are respectively arranged in a convergent shape from the two ends to the middle of the implant, so that the angle between the two sections of suture is relatively large, resulting in any section of suture forming an inclined cutting action relative to the meniscus.

[0003] Therefore, how to limit the angle between the two sutures arranged on the implant becomes a technical problem to be solved. Summary of the invention

[0004] In order to solve the technical problem in the prior art of how to limit the angle between two sutures arranged on an implant, the present invention provides a meniscus suturing device.

[0005] To achieve the above object, the technical solution adopted by the present invention is:

[0006] According to one aspect of the present invention, there is provided a meniscus suturing device, comprising a suture, a fixing rod, an inserter rod and a pushing rod;

[0007] The inserter rod has a tip portion 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;

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

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

[0010] The limiting channel and the winding channel are configured in a three-way shape, wherein along the long end of the fixing rod, the winding channel and the two end surfaces of the fixing rod respectively form wire holes, and the position of the limiting hole is located between the positions of the two wire holes.

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

[0012] The inserter rod and the housing are detachably connected, wherein the guide channel and the sliding cavity of the housing communicate with each other;

[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 pushing block is arranged in the sliding cavity, and the pushing rod is arranged in the guide channel and the sliding cavity, wherein the pushing rod is located between the pushing block and all the fixing rods;

[0014] The housing is provided with a first movable channel for inserting the first limiting block and a second movable channel for inserting 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 limit block 'along the direction from the outside to the inside of the shell', and the second elastic component is used to drive the second limit block 'along the direction from the outside to the inside of the shell';

[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 limit block, and the second blocking structure is used to be blocked by the second limit block, and the push block 'only blocked by the first blocking structure or the second blocking structure' keeps a stationary state relative to the housing;

[0017] The displacement length of the pushing block from the previous static state to the next static state is the same as the displacement length of one of the fixing rods from being pushed from the inside of the guide channel to the outside of the guide channel.

[0018] Furthermore, the number of the fixing rods is 2, the number of the first blocking structures is 1, and the number of the second blocking structures is 1;

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

[0020] Alternatively, the number of the fixing rods is four, the number of the first blocking structures is two, and the number of the second blocking structures is two.

[0021] Furthermore, it also includes a first pressing plate and a second pressing plate;

[0022] The first elastic component and the second elastic component are respectively configured as one of an elastic sheet and a coil spring;

[0023] The first pressing plate and the second pressing plate are respectively hinged to the shell, wherein the first limit 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 limit 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 pushing block;

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

[0026] Furthermore, it also includes a stopper assembly and a mounting nut;

[0027] The stopper assembly comprises a stopper body and a stopper hose, wherein the stopper body is cylindrical, and the stopper body and the stopper hose are fixedly or detachably connected;

[0028] A portion of the inserter rod is sleeved by the stopper assembly;

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

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

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

[0032] The marble of the marble pin is configured to be inserted into one of the positioning grooves of the limiter body;

[0033] The end of the inserter rod disposed in the housing is provided with a positioning boss in a protruding shape, and the positioning boss is restricted between the mounting nut and the pushing block.

[0034] Furthermore, a fixed handle is extended from the shell, and a movable handle is detachably provided on the shell, wherein the movable handle is hinged to the shell;

[0035] 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 the transmission pin is fixedly or detachably arranged in the receiving cavity;

[0036] One end of the movable handle having the movable slot is configured to be inserted into the accommodating cavity, and the transmission pin is configured to be inserted into the movable slot, wherein the axis of the transmission pin and the axis of the hinge between the movable handle and the shell are parallel to each other.

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

[0038] The housing is provided with a second guide portion, the second guide portion is in a female head shape, and the profile of the cross section of the second guide portion is the same as the profile of the first guide portion;

[0039] The first guide portion and the second guide portion are configured to be clearance-fitted.

[0040] Further, it also includes an elastic component;

[0041] The elastic component is located between the movable handle and the fixed handle, and the elastic component is detachably connected to the fixed handle and the movable handle respectively, wherein when the fixed handle and the movable handle receive external force and are in a state of gradually decreasing angle, the elastic component is used to absorb energy, and when the fixed handle and the movable handle lose external force or the external force decreases, the elastic component is used to release energy.

[0042] The above technical solution has the following advantages or beneficial effects:

[0043] The meniscus suturing device provided by the present invention has a smaller cutting area for the meniscus by the first and second suture lines because the angle of the 'included angle between the first and second suture lines' that penetrates the limiting hole is smaller than the angle of the 'included angle between suture line A and suture line B' in the prior art, resulting in a smaller secondary damage to the meniscus or the secondary damage can be ignored. BRIEF DESCRIPTION OF THE DRAWINGS

[0044] Figure 1 A cross-sectional view of a fixing rod provided in an embodiment of the present invention;

[0045] Figure 2 A cross-sectional view of a fixing rod provided in an embodiment of the present invention;

[0046] Figure 3 A schematic diagram of the structure of a fixing rod provided in an embodiment of the present invention;

[0047] Figure 4 A schematic structural diagram of a meniscus suturing device provided in an embodiment of the present invention;

[0048] Figure 5 A schematic structural diagram of a meniscus suturing device provided in an embodiment of the present invention;

[0049] Figure 6 A cross-sectional view of a meniscus suturing device provided by an embodiment of the present invention;

[0050] Figure 7 A cross-sectional view of an inserter rod provided for an embodiment of the present invention;

[0051] Figure 8 A schematic diagram of the structure of a push block provided in an embodiment of the present invention;

[0052] Fig. 9 A schematic diagram of the structure of a push block provided in an embodiment of the present invention;

[0053] Fig.10 A cross-sectional view of a housing provided by an embodiment of the present invention;

[0054] Fig.11 A schematic diagram of the structure of a housing and a push block provided in an embodiment of the present invention;

[0055] Fig.12 A schematic diagram of the structure of a mounting nut provided in an embodiment of the present invention;

[0056] Fig.13 A schematic structural diagram of a first pressing plate, a first limiting block, a first elastic component, a second pressing plate, a second limiting block and a second elastic component provided in an embodiment of the present invention;

[0057] Fig.14 It is a schematic diagram of the structure of an implant, a suture and a puncture needle in the prior art;

[0058] Fig.15 A comparison diagram of a reference triangle composed of a limiting hole, a first suture section and a second suture section of the present invention and a comparison triangle composed of two suture sections and an implant in the prior art; DETAILED DESCRIPTION

[0059] Embodiment 1:

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

[0061] For details, see Figures 1 to 7 The meniscus suturing device of this embodiment includes a suture thread 100, a fixing rod 1, an inserter rod 2 and a pushing rod 3;

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

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

[0064] Among them, see Figure 1 The limiting channel 101 provided on the fixing rod 1 is used to be penetrated by two sections of the suture 100. This is because the thread ends of the suture 100 are inserted from the outside to the inside of the fixing rod 1 through the limiting channel 101, and then the thread ends of the suture 100 pass through the limiting channel 101 from the inside of the fixing rod 1 to the outside of the fixing rod 1, thereby forming two sections of the suture 100 located in the limiting channel 101.

[0065] It should be understood that after the end of the suture 100 passes through the fixing rod 1, the end of the suture 100 should be tied with the other sections of the suture 100 located outside the fixing rod 1, and the suture 100 and the fixing rod 1 form a connection relationship, so that the suture 100 and the fixing rod 1 cannot be separated from each other. This is common knowledge known to those skilled in the art.

[0066] Taking the knot S of the suture 100 as a reference, the two sections of the suture 100 that penetrate the limiting channel 101 are defined as the first section of the suture 110 and the second section of the suture 120 respectively; along the direction from the limiting channel 101 to the knot S, when the suture 100 is dragged as a whole so that the first section of the suture 110 and the second section of the suture 120 are transformed from a loose state to a straightened state, the shape formed by the first section of the suture 110 and the second section of the suture 120 is configured as two converging line segments, and since the first diameter of the limiting hole 102 is configured to be less than four times the diameter of the suture 100, the spacing between the two sections of the suture 100 at the limiting hole 102 is relatively small.

[0067] In the prior art (named as a meniscus suture device, application number 202310981539.9), the suture provided on the implant Z1 (first or second implant Z1) is provided with two sections. For ease of understanding, the two sections of suture are defined as section A suture X1 and section B suture X2, respectively. It can be seen from the drawings of the prior art (see Fig.14 ), after the puncture needle penetrates the meniscus and the fixing rod 1, segment A suture X1 and segment B suture X2 are released to the outside of the puncture needle, the suture is pulled as a whole, so that segment A suture X1 and segment B suture X2 form a convergent shape; since segment A suture X1 and segment B suture X2 extend from the two ends of their implant Z1 to the inside of the puncture needle respectively, the distance between segment A suture X1 and segment B suture X2 at the implant Z1 is relatively large.

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

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

[0070] In the second aspect, on the basis of the aforementioned 'first aspect', the knotting point S of the suture 100 in this embodiment is defined as the first point 01 of the reference triangle, the intersection of the first section suture 110 and the limiting hole 102 is defined as the second point 02 of the reference triangle, and the intersection of the second section suture 120 and the limiting hole 102 is defined as the third point 03 of the reference triangle. Correspondingly, the 'A section suture X1 and the B section suture X2 are inserted into the common position of the puncture needle' in the above-mentioned prior art is defined as the first point 001 of the comparison triangle, the intersection of the A section suture X1 and the implant Z1 is defined as the second point 002 of the comparison triangle, and the intersection of the B section suture X2 and the implant Z1 is defined as the third point 003 of the comparison triangle;

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

[0072] In the fourth aspect, on the basis of the aforementioned 'third aspect', if the length of the fixing rod 1 in this embodiment is the same as the length of the implant Z1 (the first or second implant Z1) in the prior art, then, under the condition that the length of the reference vertical line L1 is the same as the length of the comparison vertical line L2, since the length of the first aperture R1 of the limiting hole 102 in this embodiment is smaller than the length of the fixing rod 1, and the length of the fixing rod 1 in this embodiment is configured to be the same as the length of the implant Z1 in the prior art, the angle a between the second side and the third side in the reference triangle is smaller than the angle b between the second side and the third side in the comparison triangle; thus, it is proved that the angle of 'the angle between the first suture line 110 and the second suture line 120' in this embodiment is smaller than the angle of 'the angle between 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 two suture lines set on the implant Z1 in the prior art.

[0073] During the actual use of the meniscus suturing device of the present embodiment, when the tip 201 of the inserter rod 2 penetrates the meniscus and the fixing rod 1 is released to the outside of the inserter rod 2, and then the suture 100 is pulled to make the fixing rod 1 approach the meniscus, since the angle of the 'angle between the first suture 110 and the second suture 120' that penetrates the limiting hole 102 is smaller than the angle of the 'angle between the A segment suture X1 and the B segment suture X2' in the prior art, the first suture 110 and the second suture 120 in the present embodiment have a smaller cutting area for the meniscus, resulting in smaller or negligible secondary damage to the meniscus.

[0074] Furthermore, based on the above solution, how to connect the suture thread 100 with the fixing rod 1 becomes a technical problem to be solved.

[0075] See also Figure 1 or Figure 2 In the meniscus suturing device of this embodiment, the fixing rod 1 is further provided with a winding channel 103 for being penetrated by the suture thread 100;

[0076] The limiting channel 101 and the winding channel 103 are configured in a three-way shape, wherein the winding channel 103 forms wire holes 104 with the two end surfaces of the fixing rod 1 along the long end of the fixing rod 1, and the limiting hole 102 is located between the two wire holes 104.

[0077] Among them, when the suture thread 100 is actually connected to the fixing rod 1, the thread head of one end of the suture thread 100 first penetrates along the limiting hole 102 to the first wire hole 104 therein, so that the thread head passes through the limiting channel 101 and one section of the winding channel 103 close to the first wire hole 104 during the penetration process, and the thread head reaches the outside of the winding channel 103; then, the thread head is stretched outside the fixing rod 1 to the second wire hole 104 therein; then, the thread head penetrates along the direction from the second wire hole 104 to the limiting hole 102, so that the thread head passes through another section of the winding channel 103 close to the second wire hole 104 and the limiting channel 101 during the penetration process, and the thread head reaches the outside of the limiting channel 101; after the thread head reaches the outside of the limiting channel 101, the suture thread 100 is knotted to form a knot S, and the connection between the suture thread 100 and the fixing rod 1 can be achieved.

[0078] Furthermore, in the prior art (named as meniscus suture device, application number is 202310981539.9), when the user pushes the push needle through the pushing component and the push needle reaches the position at the next moment from the position at the previous moment, the impact sound emitted by the prompt sound component reminds the current user, indicating that at the current moment, an implant Z1 has been pushed to the outside of the puncture needle; then, the user needs to push the pushing component in the opposite direction so that the pushing component moves from the first limit portion to the second limit portion again. At this time, if the user does not continue to operate, the pushing component is blocked by the third limit portion again. The pushing component is blocked by the third limit portion again, which can prevent the meniscus suture device from being misoperated by the user. The pushing component pushes the push needle, thereby preventing the implant Z1 currently restricted in the puncture needle from being accidentally fired by the push needle; however, in the above-mentioned prior art, the state in which the pushing component is not blocked by the third limiting part is defined as a non-restricted state by switching the pushing component from the second limiting part to the first limiting part, and the state in which the pushing component is blocked by the third limiting part is defined as a restricted state by switching the pushing component from the first limiting part to the second limiting part. At least in the process in which the meniscus suture device of the above-mentioned prior art is operated by the user, so that the pushing component is transformed from the non-restricted state to the restricted state, the user needs to manually complete the action of operating the pushing component, resulting in low operating efficiency of the above-mentioned prior art meniscus suture device. Therefore, how to improve the operating efficiency of the meniscus suture device in the prior art becomes a new technical problem to be solved.

[0079] See also Figures 4 to 6 The meniscus suturing device of this embodiment further includes a housing 4, a push block 5, a first limit block 6, a second limit block 7, a first elastic component 8 and a second elastic component 9;

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

[0081] The number of the fixing rods 1 is configured to be at least two, all the fixing 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 fixing rods 1;

[0082] The housing 4 is provided with a first movable channel 402 for inserting the first limit block 6 and a second movable channel 403 for inserting the second limit block 7 (see Fig.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 limit block 6 'along the direction from the outside to the inside of the housing 4', and the second elastic component 9 is used to drive the second limit block 7 'along the direction from the outside to the inside of the housing 4';

[0084] The push 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 limit block 6, and the second blocking structure 502 is used to be blocked by the second limit block 7. The push block 5 is kept stationary relative to the housing 4 only when the first blocking structure 501 is blocked or the second blocking structure 502 is blocked.

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

[0086] One of the purposes of the meniscus suturing device provided in this embodiment is to push the block 5 to achieve stepping motion.

[0087] For details, see Figure 6 , the push block 5 is respectively matched with the first limit block 6 and the second limit block 7, so that when the push block 5 is displaced relative to the housing 4, the push block 5 is alternately blocked by the first limit block 6 and the second limit block 7; more specifically, if at the previous moment, the first blocking structure 501 of the push block 5 is blocked by the first limit block 6, then at the next moment, the second blocking structure 502 of the push block 5 is blocked by the second limit block 7; or, if at the previous moment, the second blocking structure 502 of the push block 5 is blocked by the second limit block 7, then at the next moment, the first blocking structure 501 of the push block 5 is blocked by the first limit block 6;

[0088] During the displacement of the push block 5 relative to the shell 4, the push block 5 changes from the blocked position at the previous moment to the blocked position at the next moment, and the distance between the two positions is the stepping motion distance of the push block 5. In other words, the push block 5 is provided with at least one first blocking structure 501 and at least one second blocking structure 502, so that with the cooperation of the first limit block 6 and the second limit block 7, the push block 5 can form at least one stepping motion or stepping motion displacement relative to the shell 4.

[0089] After the pushing block 5 forms a stepping motion relative to the shell 4, the stepping motion distance of the pushing block 5 should match the position of the fixing rod 1 located in the guide channel 202 of the inserter rod 2, so that during the stepping motion of the pushing block 5, each time the pushing rod 3 pushes all the fixing rods 1 in the guide channel 202 of the inserter rod 2, only one of the fixing rods 1 moves from the guide channel 202 to the outside of the wire channel, that is, only one fixing rod 1 falls off from the inserter rod 2.

[0090] In this embodiment, the number of first blocking structures 501 and the number of second blocking structures 502 on the push block 5 can be configured according to the number of fixed rods 1;

[0091] For details, see Figure 6 In the meniscus suturing device of this embodiment, the number of the fixing rods 1 is 2, and correspondingly, 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 housing 4, with the tip 201 as the starting point, the two fixing rods 1 are arranged as the first fixing rod 1 and the second fixing rod 1 respectively;

[0092] In the scheme where the number of fixed rods 1 is two, the push 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 limit block 6, so that the push block 5 is in the initial static state relative to the shell 4, and the second blocking structure 502 is not blocked by the second limit block 7; at this time, the two fixed rods 1 are respectively located in the guide channel 202, and the first fixed rod 1 is located between the tip 201 and the second fixed rod 1. Since the push block 5 is in a static state relative to the shell 4 at this time, the push block 5 cannot push the push rod 3, so that the push rod 3 cannot push the two fixed rods 1, thereby avoiding the phenomenon that the first fixed rod 1 is accidentally fired by the push rod 3; after this, if the user When the first blocking structure 501 is released from the blocking of the first limit block 6, the pushing block 5 changes from a stationary state to an active 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 limit block 7, so that when the pushing block 5 is in a 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 that is in a stationary state for the second time cannot continue to push the pushing rod 3, thereby avoiding the phenomenon that the second fixed rod 1 is accidentally fired by the pushing rod 3.

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

[0094] In the scheme where the number of fixed rods 1 is 3, the push block 5 has an initial state relative to the shell 4; the first blocking structure 501 close to the push rod 3 is defined as the first first blocking structure 501, and the first blocking structure 501 away from the push rod 3 is defined as the second first blocking structure 501; in the initial state, the first first blocking structure 501 is blocked by the first limit block 6, so that the push block 5 is in the first static state relative to the shell 4, and the second blocking structure 502 is not blocked by the second limit block 7, and the second first blocking structure 501 is not blocked by the first limit block 6; at this time, the three fixed rods 1 are respectively located in the guide channel 202, along the direction from the inserter rod 2 to the push block 5, the first fixed rod 1 is close to the tip 201, the second fixed rod 1 and the third fixed rod 1 are arranged sequentially after the first fixed rod 1, and since the push block 5 is in a static state relative to the shell 4 at this time, the push block 5 cannot Push the push rod 3 so that the push rod 3 cannot push the three fixed rods 1, thereby avoiding the first fixed rod 1 being accidentally fired by the push rod 3; thereafter, if the user releases the first blocking structure 501 blocked by the first limit block 6, the push block 5 changes from a static state to an active state relative to the shell 4, so that the push block 5 can push the push rod 3, and the push rod 3 can push the three fixed plates; then, the second blocking structure 502 is automatically blocked by the second limit block 7, so that when the push block 5 is in a static state for the second time, 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 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 push block 5, which is in a static state for the second time, cannot continue to push the push rod 3, thereby avoiding the second fixed rod 1 being accidentally fired by the push rod 3.

[0095] After the push block 5 is in the second static state, if the user releases the second blocking structure 502 from being blocked by the second limit block 7, the push block 5 changes from the second static state to the movable state relative to the housing 4, so that the push block 5 can push the push rod 3, and the push rod 3 can push the two fixing rods 1;

[0096] Then, the second first blocking structure 501 is automatically blocked by the first limit block 6, so that when the push block 5 is in a stationary state for the third time, the third fixed rod is still located in the guide channel 202, and the second fixed rod 1 has moved from the guide channel 202 to the outside of the guide channel 202, so that the second fixed rod 1 falls off relative to the inserter rod 2. At this time, the push block 5 that is in a stationary state for the third time cannot continue to push the push rod 3, thereby avoiding the phenomenon that the third fixed rod 1 is accidentally fired by the push rod 3.

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

[0098] In the solution where the number of the fixed rods 1 is four, the two first blocking structures 501 are respectively a first first blocking structure 501 close to the push rod 3 and a second first blocking structure 501 far from the push rod 3, and the two second blocking structures 502 are respectively a first second blocking structure 502 close to the push rod 3 and a second second blocking structure 502 far from the push rod 3;

[0099] In the scheme where the number of the fixing rods 1 is 4, the function of the first first blocking structure 501 is the same as the aforementioned 'function of the first first blocking structure 501 in the scheme where the number of the fixing rods 1 is 3'; the function of the first second blocking structure 502 is the same as the aforementioned 'function of the second blocking structure 502 in the scheme where the number of the fixing rods 1 is 3'; the function of the second first blocking structure 501 is the same as the aforementioned 'function of the second first blocking structure 501 in the scheme where the number of the fixing rods 1 is 3', and therefore will not be described in detail;

[0100] The difference between this solution and the aforementioned 'solution with three fixed rods 1' is that a second second blocking structure 502 and a fourth fixed rod 1 are added; wherein, when the second first blocking structure 501 is blocked by the first limit block 6, the third fixed rod 1 and the fourth fixed rod 1 are still located in the guide channel 202, and since the push block 5 is in a stationary state relative to the shell 4 at this time, the push block 5 cannot push the push rod 3, so that the push rod 3 cannot push the third fixed rod 1 and the fourth fixed rod 1, thereby avoiding the phenomenon that the third fixed rod 1 is accidentally fired by the push rod 3; thereafter, if the user releases the blocking of the second first blocking structure 501 by the first limit block 6, the push block 5 When the shell 4 changes from a stationary state to an active state, 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 limit block 7, so that the pushing block 5 is in a stationary state for the fourth time, 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 the outside of the guide channel 202, so that the third fixed rod 1 falls off relative to the inserter rod 2. At this time, the pushing block 5, which is in a stationary state for the fourth time, cannot continue to push the pushing rod 3, thereby avoiding the phenomenon that the fourth fixed rod 1 is accidentally fired by the pushing rod 3.

[0101] It should be understood that after seeing the technical solution of this embodiment, those skilled in the art can also design and manufacture a meniscus suturing device with 5, 6 or more parts, 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 fixing rods 1, 3 fixing rods 1 and 4 fixing rods 1, a universal push block 5 (not shown in the figure) can be adopted, and the universal push block 5 is provided with at least two first limiting structures and two second limiting structures; the significance of the universal push block 5 is that when the manufacturer is faced with the need to manufacture meniscus suturing devices with 2 fixing rods 1, 3 fixing rods 1 and 4 fixing rods 1 respectively, the manufacturer chooses the universal push block 5, which can reduce the number of manufacturing molds of the push block 5; if push blocks 5 matching the schemes with 2 fixing rods 1, 3 fixing rods 1 and 4 fixing rods 1 are generated respectively, the push block 5 requires three molds, and if a universal push block 5 is generated, only one mold is required; under the condition of reducing the number of molds of the push block 5, the economic cost of the meniscus suturing device can be effectively reduced.

[0103] The meniscus suturing device in this embodiment is provided with a first elastic component 8 and a second elastic component 9 in order to realize that the push block 5 is transformed from a blocked state at a previous moment to a blocked state at a later moment, and in the process of transforming to the blocked state at the later moment, the first limit block 6 is formed to automatically block the first limit structure, or the second limit block 7 is formed to automatically block the second limit structure;

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

[0105] For details, see Figure 6 or Fig.13 The meniscus suturing device of this embodiment further includes a first pressing plate 10 and a second pressing plate 11;

[0106] The first elastic member 8 and the second elastic member 9 are respectively configured as one of an elastic sheet and a coil spring;

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

[0108] In the scheme in which the first pressure plate 10 and the second pressure plate 11 are provided, its essence is to utilize the elastic force of the first elastic component 8 and cooperate with the lever-shaped structure formed by the first pressure plate 10 and the shell 4 to force the first limit block 6 provided on the first pressure plate 10 to move in the direction of 'from the outside to the inside of the shell 4', and to utilize the elastic force of the second elastic component 9 and cooperate with the lever-shaped structure formed by the second pressure plate 11 and the shell 4 to force the second limit block 7 provided on the second pressure plate 11 to move in the direction of 'from the outside to the inside of the shell 4'.

[0109] Among them, see Figure 6, the first elastic component 8 is arranged between the shell 4 and the first pressure plate 10. If the elastic force of the first elastic component 8 forces the first pressure plate 10 to rotate, then at the first elastic component 8, the distance between the first pressure plate 10 and the shell 4 gradually increases, and at the first limit block 6, the distance between the first pressure plate 10 and the shell 4 gradually decreases, so that the first limit 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 limit block 6 can automatically block the first blocking structure 501; correspondingly, when it is necessary to release the first blocking structure 501 from being blocked by the first limit block 6, the user needs to apply pressure on the first pressure plate 10 located at the first elastic component 8, and the pressure forces the distance between the first pressure plate 10 located at the first elastic component 8 and the shell 4 to decrease, so that the first elastic component 8 accumulates energy, and at the same time, the distance between the first pressure plate 10 at the first limit block 6 and the shell 4 increases, forming a movement action of the first limit block 6 in the direction of "from the inside to the outside of the shell 4" relative to the shell 4, and then the first limit block 6 and the first blocking structure 501 are separated from each other;

[0110] Also, see Figure 6 , the second elastic component 9 is arranged between the shell 4 and the second pressure plate 11. If the elastic force of the second elastic component 9 forces the second pressure plate 11 to rotate, then at the second elastic component 9, the distance between the second pressure plate 11 and the shell 4 gradually increases, and at the second limit block 7, the distance between the second pressure plate 11 and the shell 4 gradually decreases, so that the second limit block 7 moves relative to the shell 4 in the direction of "from the outside to the inside of the shell 4", so that the second limit block 7 can automatically block the second blocking structure 502; correspondingly, when it is necessary to release the second blocking structure 502 from being blocked by the second limit block 7, the user needs to apply pressure on the second pressure plate 11 located at the second elastic component 9, and the pressure forces the distance between the second pressure plate 11 located 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 pressure plate 11 at the second limit block 7 and the shell 4 increases, forming a movement of the second limit block 7 relative to the shell 4 in the direction of "from the inside to the outside of the shell 4", and then the second limit 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 combination with the pulling force of the first elastic component 8 and the pulling force of the second elastic component 9, the technical effect of the aforementioned scheme of 'also including a first pressure plate 10 and a second pressure plate 11' can also be achieved; when a pulling component is used, the pulling component should form a telescopic pair with the shell 4, 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 to the pulling component and the shell 4; when a pulling component is used, the pulling component should form a rotating pair with the shell 4, 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 to the pulling component and the shell 4.

[0112] The meniscus suturing device of this embodiment is shown in FIG. Figure 8 or Fig. 9 In order to achieve that the push block 5 is blocked by the first limiting block 6 and the second limiting block 7, preferably, the first blocking structure 501 is specifically configured to be a first limiting groove recessed in the push block 5, and the second blocking structure 502 is specifically configured to be a second limiting groove recessed in the push block 5;

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

[0114] The first blocking structure 501 is set as a first limiting groove, and the second blocking structure 502 is set as a 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 set as a first limiting protrusion structure (not shown in the figure), and the second blocking structure 502 can be set as a second limiting protrusion structure (not shown in the figure); wherein, the contour of the first limiting protrusion protrudes beyond the contour 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 the pushing block 5 blocked by the first limiting block 6; the setting method of the second limiting protrusion is the same as the setting method of the first limiting protrusion, the only difference is that the second limiting protrusion is blocked by the second limiting block 7, and the rest of the content will not be repeated here.

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

[0117] In the prior art (named as meniscus suture device, application number is 202310981539.9), when the push member is located at the first limit portion or the second limit portion, the push member is blocked in the radial direction of the first limit portion or the second limit portion, so that the push member cannot move toward the inside of the shell along the radial direction of its shell; when the push member is located at the second limit portion, along the axial direction of its shell, the push member is blocked by the third limit portion, and when the push member is switched from the second limit portion to the first limit portion, the push member is not blocked by the third limit portion, so that the push member can push the push needle; when the push member needs to be switched from the first limit portion to the second limit portion, manual operation of the push member is required, resulting in low operating efficiency of the meniscus suture device of the prior art.

[0118] In the meniscus suturing device provided in this embodiment, the push block 5 is equivalent to the push member in the prior art, and the push rod 3 is equivalent to the push needle in the prior art; wherein, the operation step in which the previous limit block (the first or second limit block 7) is adjusted to be separated from the previous blocking structure (the first or second blocking structure 502) is equivalent to the operation step in which the push member in the prior art is adjusted from the second limit portion to the first limit portion, and the operation step in which the push block 5 pushes the push rod 3 is equivalent to the step in which the push member in the prior art pushes the push needle; in addition, after the push block 5 of this embodiment pushes the push rod 3 and the push block 5 performs a stepping motion, In the process that the rear blocking structure (the second or first blocking structure 501) of the pushing block 5 is blocked by the rear limit block (the second or first limit block 6), the rear limit block (the second or first limit block 6) automatically contacts and blocks the rear blocking structure (the second or first blocking structure 501), thereby eliminating the need for a manual operation step of 'manually operating the pushing member as in the prior art to switch the pushing member from the first blocking part to the second blocking part', thereby saving the time of the manual operation step. Therefore, the operating efficiency of the meniscus suturing device of this embodiment is higher than that of the meniscus suturing device of the prior art.

[0119] For further information, see Figures 4 to 6 , Figures 10 to 12 The meniscus suturing device of this embodiment further includes a stopper assembly 12 and a mounting nut 13;

[0120] The stopper assembly 12 includes a stopper body 12-1 and a stopper hose 12-2. The stopper body 12-1 is cylindrical, and the stopper body 12-1 and the stopper hose 12-2 are fixedly or detachably connected.

[0121] A portion of the inserter rod 2 is sleeved by the stopper assembly 12;

[0122] The mounting nut 13 is provided with an internal thread, the housing 4 is provided with an external thread, and the mounting nut 13 and the housing 4 are threadedly connected;

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

[0124] Among them, the stopper assembly 12 is integrally sleeved on the outside of the inserter rod 2, and the function of the stopper assembly 12 is the same as that of the depth-limiting sleeve in the prior art (named as a meniscus suture device, application number 202310981539.9), which is used to limit the penetration depth of the inserter rod 2;

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

[0126] See also Figure 4 or Figure 6 The mounting nut 13 is used to connect the limiter assembly 12 and the housing 4, wherein the mounting nut 13 and the housing 4 are connected by a threaded connection, which is convenient for disassembly and assembly of the mounting nut 13 and the housing 4, and the limiter body 12-1 of the limiter assembly 12 is inserted into the mounting nut 13, and a connection is formed by the friction force between the limiter body 12-1 and the mounting nut 13, the purpose of which is to facilitate adjustment of the position of the limiter body 12-1 relative to the mounting nut 13, thereby facilitating easy adjustment of the position of the limiter assembly 12 relative to the mounting nut 13.

[0127] For details, see Figure 5 In the meniscus suturing device of this embodiment, a plurality of positioning grooves 12-3 are provided on the outer circumferential surface of the stopper body 12-1;

[0128] The mounting nut 13 is provided with a mounting through hole 13-1 (see Fig.12 ), a marble pin 13-2 is provided in the mounting through hole 13-1;

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

[0130] The end of the inserter rod 2 disposed in the housing 4 is provided with a positioning boss 203 in a protruding shape (see Figure 7 ), the positioning boss 203 is confined between the mounting nut 13 and the pushing block 5.

[0131] Among them, the specific structure of the marble pin 13-2 is common knowledge known to those skilled in the art, and will not be repeated here; the telescopic marble of the marble pin 13-2 can protrude from the column pin portion of the marble pin 13-2 under the elastic force of the spring, but the telescopic marble cannot be separated from the outside of the column pin portion, and the telescopic marble can be squeezed when subjected to external force, so that the telescopic marble can retract to the inside of the column pin portion;

[0132] When the ball pin 13-2 is positioned and matched with the limiter body 12-1, if the telescopic ball is not squeezed by the limiter body 12-1, the ball pin 13-2 is accommodated in one of the positioning grooves 12-3, so that the limiter body 12-1 and the mounting nut 13 at this time form a restricted connection structure through the ball pin 13-2 respectively; when the limiter body 12-1 is subjected to external force and has a movement tendency relative to the mounting nut 13, the limiter body 12-1 squeezes the telescopic ball of the ball pin 13-2, forcing the telescopic ball to retract into the interior of the pin part, so that a connection structure that is not restricted by the ball pin 13-2 is formed between the limiter body 12-1 and the shell 4, and the limiter body 12-1 can produce a movement relative to the mounting nut 13.

[0133] The end of the inserter rod 2 is provided with a positioning boss 203 (see Figure 5 ), the purpose of which is to position the inserter rod 2 relative to the shell 4 to prevent the inserter rod 2 from being displaced relative to the shell 4.

[0134] It should be understood that a return spring is sleeved on the push rod 3, wherein a baffle is provided on the push rod 3, the baffle and the return spring are respectively located in the sliding cavity 401, and the return spring is confined between the positioning boss 203 and the baffle of the push rod 3; when the push block 5 pushes the push rod 3, so that the fixed rod 1 moves from the inside to the outside of the guide channel 202, the return spring is squeezed and contracted by the baffle and the positioning boss 203, and the return spring accumulates energy; when the push block 5 is in an active state and does not push the push rod 3, the return spring releases energy, and the return spring pushes the baffle, so that the push rod 3 produces a return movement along the direction of the inserter rod 2 to the shell 4.

[0135] For further information, see Figures 4 to 6 In the meniscus suturing device of this embodiment, a fixed handle 404 is extended from the shell 4, and a movable handle 405 is detachably provided on the shell 4, wherein the movable handle 405 is hinged to the shell 4;

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

[0137] One end of the movable handle 405 having a movable slot 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 slot 405-1, wherein the axis line of the transmission pin 504 and the axis line of the hinge between the movable handle 405 and the shell 4 are parallel to each other.

[0138] When the meniscus suturing device of this embodiment is actually used, the user first presses the first pressing plate 10 or the second pressing plate 11 to separate the first limiting block 6 from the first blocking structure 501, or to separate the second limiting block 7 from the second blocking structure 502. Then, the user holds the fixed handle 404 and the movable handle 405 with one hand, 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 its hinge, and the angle between the fixed handle 404 and the movable handle 405 becomes smaller; correspondingly, the movable slot 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 stepping motion, the limiting block (the first or second limiting block 7) at the rear is automatically inserted into the The blocking structure behind (the first or second blocking structure 502) blocks the pushing block 5 from moving. At this time, affected by the sliding pair of the movable slot 405-1 and the transmission pin 504, the movable handle 405 changes from a moving state to a stationary state, so that the angle between the movable handle 405 and the fixed handle 404 cannot continue to decrease. During 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 restricted in the guide channel 202. Repeat the above action process. When the user presses the first pressing plate 10 or the second pressing plate 11 again, so that the limit block (the first or second limit block 7) and the blocking structure (the first or second blocking structure 502) are separated 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] For further information, see Figure 5 , Fig.11 In the meniscus suturing device of this embodiment, the push block 5 at one end is configured as a first guide portion 505, the first guide portion 505 is in the shape of a male head, the profile of the cross section of the first guide portion 505 is configured as a geometric profile other than a circular profile, and the position of the accommodating cavity 503 is located in the first guide portion 505;

[0140] The housing 4 is provided with a second guide portion 406, which is in the shape of a female head, and the profile of the cross section of the second guide portion 406 is the same as the profile of the first guide portion 505;

[0141] The first guide portion 505 and the second guide portion 406 are configured to be clearance-fitted.

[0142] Among them, when the first guide portion 505 is arranged in the second guide portion 406, affected by the contour (non-circular contour) of the first guide portion 505 and the contour (non-circular contour) of the second guide portion 406, the first guide portion 505 and the second guide portion 406 form a radial (at a certain angle or perpendicular to the movement direction of the push block 5) positioning state, and the first guide portion 505 and the second guide portion 406 form a sliding pair, and the push block 5 cannot be offset or rotated relative to the shell 4, and the push block 5 can only move in a linear direction along the direction from the shell 4 to the inserter rod 2.

[0143] Preferably, the profile of the cross section of the first guide portion 505 is configured as one of a semicircular profile, a triangular profile, a rectangular profile, a regular hexagonal profile, a convex profile, and a concave profile.

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

[0145] For further information, see Figures 4 to 6 The meniscus suturing device of this embodiment further includes an elastic component 14;

[0146] The elastic component 14 is located between the movable handle 405 and the fixed handle 404, and the elastic component 14 is detachably connected to the fixed handle 404 and the movable handle 405, respectively. When the fixed handle 404 and the movable handle 405 receive external force and are in a state of gradually decreasing angle, the elastic component 14 is used to absorb energy. When the fixed handle 404 and the movable handle 405 lose external force or the external force is reduced, the elastic component 14 is used to release energy.

[0147] Among them, the elastic component is arranged between the fixed handle 404 and the movable handle 405. When the user's hand applies a gripping force to the fixed handle 404 and the movable handle 405, the angle between the movable handle 405 and the fixed handle 404 becomes smaller. At this time, the fixed handle 404 and the movable handle 405 respectively squeeze the elastic component 14, so that the elastic component 14 absorbs energy; when the gripping force received by the fixed handle 404 and the movable handle 405 disappears or decreases to be lower than the elastic force of the elastic component 14, the elastic component 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, see Figure 5The elastic component 14 specifically includes a first spring sheet 14-1, a second spring sheet 14-2, and a spring sheet pin 14-3, wherein one end of the first spring sheet 14-1 is provided with a hinge groove, and one end of the second spring sheet 14-2 is provided with a hinge groove, and the spring sheet pin 14-3 penetrates the hinge grooves respectively, so that the first spring sheet 14-1 and the second spring sheet 14-2 form a hinge structure, and correspondingly, a mounting hole is provided at the other end of the first spring sheet 14-1, and a mounting hole is provided at the other end of the second spring sheet 14-2, the first spring sheet 14-1 is connected to the threaded hole on the movable handle 405 by penetrating its mounting hole with a screw, and the second spring sheet 14-2 is connected to the threaded hole on the fixed handle 404 by penetrating its mounting hole with a screw, so that the spring sheet component forms a connection structure relative to the fixed handle 404 and the movable handle 405.

[0149] It should be understood that in other embodiments, elastic components 14 of other structures may also be used. For example, a coil spring (not shown in the figure) may be provided between the fixed handle 404 and the movable handle 405, or a coil spring (not shown in the figure) may be provided at the hinge between the shell 4 and the movable handle 405.

[0150] The above description is only a preferred embodiment of the present invention, and does not limit the patent scope of the present invention. Any equivalent structural transformation made by using the contents of the present invention description and drawings, or directly or indirectly applied in other related technical fields, are also included in the patent protection scope of the present invention.

Claims

1. A meniscus suturing device, characterized in that: Includes sutures, fixation rods, inserter rods, and pusher rods; The inserter rod has a tip portion 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 and the surface of the fixing rod form a limiting hole, the inner aperture of the limiting hole along the long end of the fixing rod is defined as a first aperture, the inner aperture of the limiting hole along the radial direction of the fixing rod is defined as a second aperture, the first aperture is greater than or equal to the second aperture, the first aperture is configured to be greater than twice the diameter of the suture, and the first aperture is configured to be less than four times the diameter of the suture, wherein the limiting hole is used to be penetrated by two sections of the suture.

2. The meniscus suturing 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 as a three-way shape, wherein along the long end of the fixing rod, the winding channel and the two end surfaces of the fixing rod respectively form wire holes, and the position of the limiting hole is located between the positions of the two wire holes.

3. The meniscus suturing device according to claim 1, characterized in that: It also includes a housing, a pushing 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 and the sliding cavity of the housing communicate with each other; 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 pushing block is arranged in the sliding cavity, and the pushing rod is arranged 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 inserting the first limiting block and a second movable channel for inserting the second limiting block, and the first movable channel and the second movable channel are respectively communicated with the sliding cavity; The first elastic component is used to drive the first limit block 'along the direction from the outside to the inside of the shell', and the second elastic component is used to drive the second limit block 'along the direction from the outside to the inside of the shell'; The pushing 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 pushing block 'only blocked by the first blocking structure or the second blocking structure' keeps a stationary state relative to the housing; The displacement length of the pushing block from the previous static state to the next static state is the same as the displacement length of one of the fixing rods from being pushed from the inside of the guide channel to the outside of the guide channel.

4. The meniscus suturing device according to claim 3, characterized in that: The number of the fixing rods is 2, the number of the first blocking structures is 1, and the number of the second blocking structures is 1; Alternatively, the number of the fixing rods is 3, the number of the first blocking structures is 2, and the number of the second blocking structures is 1; Alternatively, the number of the fixing rods is four, the number of the first blocking structures is two, and the number of the second blocking structures is two.

5. The meniscus suturing device according to claim 3, characterized in that: Also included is a first pressing plate and a second pressing 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 pressing plate and the second pressing plate are respectively hinged to the shell, wherein the first limit 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 limit 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; 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 suturing device according to claim 5, characterized in that: Also included is a stopper assembly and a mounting nut; The stopper assembly comprises a stopper body and a stopper hose, wherein the stopper body is cylindrical, and the stopper body and the stopper hose are fixedly or detachably connected; A portion of the inserter rod is sleeved by the stopper assembly; The mounting nut is provided with an internal thread, the housing is provided with 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 suturing device according to claim 6, characterized in that: The outer circumferential surface of the limiter body is provided with a plurality of positioning grooves; The mounting nut is provided with a mounting through hole, and a marble pin is provided in the mounting through hole; The marble of the marble pin is configured to be inserted into one of the positioning grooves of the stopper body; The end of the inserter rod disposed in the housing is provided with a positioning boss in a protruding shape, and the positioning boss is restricted between the mounting nut and the pushing block.

8. The meniscus suturing device according to claim 3, characterized in that: A fixed handle is extended from the shell, and a movable handle is detachably provided on the shell, wherein the movable handle is hinged to the shell; 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 the transmission pin is fixedly or detachably arranged in the receiving cavity; One end of the movable handle having the movable slot is configured to be inserted into the accommodating cavity, and the transmission pin is configured to be inserted into the movable slot, wherein the axis of the transmission pin and the axis of the hinge between the movable handle and the shell are parallel to each other.

9. The meniscus suturing device according to claim 8, characterized in that: The pushing block at one end is configured as a first guide portion, the first guide portion is in the shape of a male head, the cross-sectional profile of the first guide portion is configured as a geometric profile other than a circular profile, and the position of the accommodating cavity is located at the first guide portion; The housing is provided with a second guide portion, the second guide portion is in a female head shape, and the profile of the cross section of the second guide portion is the same as the profile of the first guide portion; The first guide portion and the second guide portion are configured to be clearance-fitted.

10. The meniscus suturing device according to claim 8, characterized in that: Also included is an elastic component; The elastic component is located between the movable handle and the fixed handle, and the elastic component is detachably connected to the fixed handle and the movable handle respectively, wherein when the fixed handle and the movable handle receive external force and are in a state of gradually decreasing angle, the elastic component is used to absorb energy, and when the fixed handle and the movable handle lose external force or the external force decreases, the elastic component is used to release energy.

Images