Continuous suture system

Abstract

This invention provides a continuous suture system, including an outer component, an inner component, a locking component, multiple anchor assemblies, and sutures. The outer component has a sleeve and a shaft connected to the distal end of the sleeve. The inner wall of the sleeve has multiple annular grooves arranged axially. The inner component has a handle and a movable part connected to the distal end of the handle. The movable part has a pair of elastic parts that can be laterally elastically deformed toward each other. Each elastic part has a locking part on its outer side. The elastic parts can be in a laterally elastic rebound state when the locking part is inserted into the annular groove and in a laterally elastic compression state when the locking part is located between the annular grooves and disengaged from the annular grooves. The locking component has a locked state that restricts the elastic parts to the laterally elastic rebound state and an unlocked state that allows the elastic parts to deform to the laterally elastic compression state. According to this invention, the operator can only move the locking parts of a pair of elastic parts and insert them into the proximal adjacent annular grooves at a time, ensuring accurate replacement of one anchor assembly.

Description

Technical Field

[0001] This invention relates to the field of medical device technology, and more particularly to a continuous suturing system. Background Technology

[0002] Suturing systems are commonly used for endoscopic wound closure. The system involves anchoring multiple suture anchors around the wound, then tightening the sutures to close the wound and complete the closure. Because a large number of anchors are required, to avoid the tedious process of repeatedly removing and installing the anchors, existing technologies have developed continuous suturing systems. For example, patent CN202111664126.5 discloses an endoscopic suture anchoring device where multiple anchors are pre-mounted on the outer surface of an installation tube. These anchors are then sequentially pushed out of the tube by a pusher and rotated into and anchored in the corresponding tissue, achieving continuous endoscopic wound closure. However, this continuous suturing system suffers from insufficient precision and control over the anchor pushing action. Summary of the Invention

[0003] This invention provides a continuous suturing system.

[0004] Specifically, the present invention is achieved through the following technical solution:

[0005] This invention provides a continuous suturing system for suturing wounds under endoscopy, comprising:

[0006] The external component is provided with a sleeve and a sleeve shaft connected to the distal end of the sleeve. The proximal end opening of the sleeve and the distal end opening of the sleeve shaft are connected through the sleeve cavity and the sleeve shaft cavity. The inner wall of the sleeve is formed with a plurality of annular grooves arranged along the axial direction, and each annular groove extends around the sleeve circumferentially.

[0007] The internal components include a handle, a movable part connected to the distal end of the handle, and a mandrel connected to the movable part. A through channel is formed inside the handle. The movable part can move axially and rotate circumferentially within the sleeve cavity, driving the mandrel to move as a whole. The movable part is provided with a pair of elastic parts that can deform laterally toward each other. Each elastic part is provided with a retaining part on its outer side. The elastic parts can be in a lateral elastic rebound state when the retaining part is inserted into the annular groove and in a lateral elastic compression state when the retaining part is located between the annular grooves and disengaged from the annular grooves. When the retaining part is inserted into the annular groove at the farthest position, the mandrel can extend a certain distance from the distal end of the sleeve shaft to form multiple installation positions for installing anchor components arranged axially.

[0008] A locking assembly has a locked state that restricts the elastic portion to the lateral elastic rebound state, and an unlocked state that allows the elastic portion to deform to the lateral elastic compression state. The locking assembly includes:

[0009] The base is connected to one of the elastic parts;

[0010] A lateral locking block, connected to the base, and capable of moving laterally relative to the base between a lateral locked position and a lateral unlocked position;

[0011] An actuating rod is movable relative to the base along the axial direction between a first axial position near the proximal side and a second axial position near the distal side. The actuating rod is adapted to a lateral locking block such that when the actuating rod is in the first axial position, the lateral locking block can be restricted to a laterally locked position by the actuating rod, thereby restricting the elastic portion of the lateral locking block to the lateral elastic rebound state to achieve the locked state. When the actuating rod moves from the first axial position to the second axial position, the lateral locking block can be actuated to a laterally unlocked position by the actuating rod, thereby allowing the elastic portion of the lateral locking block to deform to the lateral elastic compression state to achieve the unlocked state. And when the actuating rod moves from the second axial position to the first axial position, the lateral locking block can be actuated to a laterally locked position by the actuating rod, thereby restricting the elastic portion of the lateral elastic rebound state to achieve the locked state again.

[0012] An axial locking block is used to operably restrict the actuator rod in the second axial position;

[0013] Multiple anchor assemblies and sutures, each anchor assembly being able to be positioned in the installation position and being able to be pushed out of the installation position by a sleeve shaft, with the sutures passing sequentially through the loops of each anchor assembly.

[0014] In some embodiments, the axial locking block is connected to the base and is movable relative to the base in a transverse direction between an axially locked position and an axially unlocked position. The actuating rod is adapted to the axial locking block such that when the actuating rod is in a first axial position, the axial locking block can be pressed into the axially locked position by the elastic restoring force of the elastic body. When the actuating rod moves from the first axial position to the second axial position, the axial locking block can be actuated by the actuating rod to overcome the elastic restoring force to the axially unlocked position, and then pressed into the axially locked position by the elastic restoring force.

[0015] In some embodiments, the axial locking block is adapted to the elastic portion to be actuated by the elastic portion from the axially locked position to the axially unlocked position when the elastic portion deforms from the elastic rebound state to the elastic compression state.

[0016] In some embodiments, the axial locking block is provided with an axial locking block body and a convex cone portion. The axial locking block body is connected to the base via a slide rail pair. The convex cone portion is provided on the axial locking block body and the cone apex points towards another elastic portion, so that when the elastic portion deforms from the elastic rebound state to the elastic compression state, the other elastic portion can contact the cone apex of the convex cone, thereby actuating the axial locking block from the axial locking position to the axial unlocking position by the elastic portion.

[0017] In some embodiments, the lateral locking block and the axial locking block are connected to the proximal and distal sides of the base respectively via a slide rail pair. The base is formed with an axially penetrating opening to allow the actuating rod to pass through the opening and move axially relative to the base between a first axial position near the proximal side and a second axial position near the distal side.

[0018] In some embodiments, the actuating rod and the axial locking block are adapted to each other through a first mating slope pair.

[0019] In some embodiments, the actuating rod and the lateral locking block are adapted to each other via a second mating ramp pair, so that when the actuating rod moves from a first axial position to a second axial position, the lateral locking block can be actuated to a lateral unlocked position by the actuating rod; and the actuating rod and the lateral locking block are adapted to each other via a third mating ramp pair, so that when the actuating rod moves from a second axial position to a first axial position, the lateral locking block can be actuated to a lateral locked position by the actuating rod.

[0020] In some embodiments, the actuating rod is formed with a relief groove extending axially, and the transverse locking block is provided with a protrusion adapted to the relief groove, so that when the actuating rod is in the first axial position, the protrusion abuts against the transverse locking block and cannot move into the relief groove, thereby restricting the transverse locking block to the transverse locked position by the actuating rod. When the actuating rod moves from the first axial position to the second axial position, the protrusion can move laterally into the relief groove, thereby actuating the transverse locking block to the transverse unlocked position by the actuating rod.

[0021] In some embodiments, the distal end of the actuating rod facing an elastic portion and together with the transverse locking block bottom beam form the slope of the second mating slope pair, and the distal end of the relief groove of the actuating rod and the protrusion together form the third mating slope pair.

[0022] In some embodiments, the actuating rod can be driven by the elastic restoring force of the elastomer to move from the second axial position to the first axial position; and / or, each of the anchor components is provided with a gradually changing pitch of at least one effective number of turns; and / or, each of the anchor components is provided with a fixed pitch or a gradually changing pitch.

[0023] According to an embodiment of the present invention, after the operator presses the button once to perform the unlocking operation, only the locking part of a pair of elastic parts can move and be embedded into the adjacent annular groove on the near side, thereby ensuring accurate replacement of an anchor assembly, and the operation process is simple.

[0024] It should be understood that the above general description and the following detailed description are exemplary and explanatory only, and do not limit this application. Attached Figure Description

[0025] The accompanying drawings, which are incorporated in and form part of this specification, illustrate embodiments consistent with this application and, together with the description, serve to explain the principles of this application.

[0026] Figure 1 a is an overall schematic diagram of a continuous suture system according to an embodiment of the present invention;

[0027] Figure 1 b is a partial cross-sectional view of a continuous suture system according to an embodiment of the present invention;

[0028] Figure 2 This is an overall schematic diagram of some components of a continuous stitching system according to an embodiment of the present invention;

[0029] Figure 3 a is a cross-sectional view of the continuous suturing system in a locked state according to an embodiment of the present invention;

[0030] Figure 3 b is a cross-sectional view of the continuous suturing system in the unlocked state according to an embodiment of the present invention;

[0031] Figure 4 a is Figure 3 A magnified view of a portion of point A in section a;

[0032] Figure 4 b is Figure 3 A magnified view of a portion of point B in b;

[0033] Figure 5 a is a schematic diagram from a first perspective of some components of the locking assembly in an embodiment of the present invention;

[0034] Figure 5 b is a schematic diagram from a second perspective of a portion of the locking component in one embodiment of the present invention;

[0035] Figure 6 a is a schematic diagram of the actuator rod from a first perspective in an embodiment of the present invention;

[0036] Figure 6 b is a schematic diagram of the actuator rod from a second perspective in one embodiment of the present invention;

[0037] Figure 7 a is a schematic diagram from a first perspective of the locking component in the working state according to an embodiment of the present invention;

[0038] Figure 7 b is a schematic diagram from a second perspective of the locking component in the working state according to an embodiment of the present invention;

[0039] Figure 8 a is a schematic diagram of an internal component from a first perspective in an embodiment of the present invention;

[0040] Figure 8 b is a schematic diagram of an internal component from a second perspective in an embodiment of the present invention;

[0041] Figure 9 This is a schematic diagram of the assembly state of the internal components and the locking components in one embodiment of the present invention;

[0042] Figure 10 a is a schematic diagram of the base from a first perspective in an embodiment of the present invention;

[0043] Figure 10 b is a schematic diagram of the base from a second perspective in one embodiment of the present invention;

[0044] Figure 11 a is a schematic diagram of the lateral locking block from a first perspective in an embodiment of the present invention;

[0045] Figure 11 b is a schematic diagram of the second perspective of the transverse locking block in one embodiment of the present invention;

[0046] Figure 12 a is a schematic diagram of the axial locking block from a first perspective in an embodiment of the present invention;

[0047] Figure 12 b is a schematic diagram of the axial locking block from a second perspective in one embodiment of the present invention.

[0048] Figure label:

[0049] 100: External component; 110: Sleeve; 111: Annular groove; 120: Shaft sleeve;

[0050] 200: Internal component; 210: Handle; 220: Moving part; 221: Base plate; 2211: Elastomer seat; 2212: Strip groove; 222: First elastic part; 2221: Elastic part slide groove; 223: Second elastic part; 224: Locking part; 225: First elastic body; 226: Protrusion; 227: Through hole; 228: Window;

[0051] 300: Locking component; 310: Base; 311: Base body; 312: Annular wall; 313: First base groove; 314: Base opening; 315: Base slider; 316: Second base groove;

[0052] 320: Horizontal locking block; 321: Horizontal locking block body; 322: Horizontal locking block opening; 323: Horizontal locking block groove; 324: Protruding rib; 325: Protruding rib ramp; 326: Horizontal locking block ramp;

[0053] 330: Actuating rod; 331: Nose; 3312: Third actuating rod ramp; 3313: Nose through hole; 332: Head; 333: Tail; 334: Relief groove; 335: First actuating rod ramp; 336: Notch; 337: Actuating rod groove; 338: Second actuating rod ramp; 339: Nose groove;

[0054] 340: Control lever;

[0055] 350: Button;

[0056] 360: Spindle; 361: Bayonet;

[0057] 430: Axial locking block; 431: Axial locking block body; 432: Axial locking block ramp; 433: Axial locking block slide bar; 434: Convex cone; 435: Notch;

[0058] 500: Anchor assembly; 511: Tubular structure; 512: Card; 513: Tip; 520: Wire loop; 521: Collar; 522: Wire hole;

[0059] 600: Thread. Detailed Implementation

[0060] The invention will now be described with reference to several embodiments. It should be understood that these embodiments are described only to enable those skilled in the art to better understand and thus implement the invention, and are not intended to imply any limitation on the scope of the invention.

[0061] As used herein, the term "comprising" and its variations are to be interpreted as open-ended terms meaning "including but not limited to"; the terms "embodiment" and "one embodiment" are to be interpreted as "at least one embodiment"; the term "another embodiment" is to be interpreted as "at least one other embodiment"; the terms "first," "second," etc., may refer to different or the same objects; the term "setup" is not limited to direct or indirect connections, nor to specific connection methods. Other explicit and implicit definitions may also be included below.

[0062] Specific numerical values ​​or ranges may be referred to in the following description. It should be understood that these values ​​and ranges are merely exemplary and may be helpful in putting the ideas of the invention into practice. However, the description of these examples is not intended to limit the scope of the invention in any way. These values ​​or ranges may be set differently depending on the specific application scenario and requirements.

[0063] As mentioned above, existing continuous stitching systems have shortcomings in terms of control precision and maneuverability regarding the anchor pushing action. The continuous stitching system proposed in the embodiments of the present invention at least partially solves the above-mentioned problems. Reference will be made below. Figures 1 to 12 This describes the structure and working principle of a continuous suture system according to an exemplary embodiment of the present invention. Generally, as... Figure 2 and Figure 9 As shown, the continuous suturing system of this invention includes an outer component 100, an inner component 200, and a locking component 300. The inner component 200 is disposed inside the outer component 100 and is capable of axial and circumferential movement relative to the outer component 100. It performs a pushing action to dislodge the old anchor component via axial movement and a tightening action to tighten the anchor component via circumferential movement. The locking component 300 is used to prevent accidental triggering of the pushing action to the new anchor component when the dislodgement of the old anchor component is not required, and to dislodge only one old anchor component at a time when dislodgement is required. In this embodiment of the invention, "old anchor component" refers to an anchor component that has been tightened and anchored in the tissue surrounding the wound, and "new anchor component" refers to an anchor component located adjacent to the old anchor component but not yet anchored in the tissue surrounding the wound.

[0064] External components:

[0065] The external component 100 of this embodiment of the invention is composed of a sleeve 110 and a sleeve shaft 120. The sleeve 110 has a sleeve cavity inside, and both ends of the sleeve 110 have openings that communicate with the sleeve cavity between them. The opening at the distal end of the sleeve 110 is smaller, for through connection with the sleeve shaft 120 with a smaller diameter, while the opening at the proximal end of the sleeve 110 is larger, thereby facilitating the insertion of the moving part 220 of the internal component 200 with a larger diameter.

[0066] In this embodiment of the invention, the inner wall of the sleeve 110 is formed with a plurality of annular grooves 111 arranged axially. Each annular groove 111 corresponds to an anchor assembly 500, that is, the spacing between adjacent annular grooves 111 is the same as the spacing between adjacent anchor assemblies 500. Each annular groove 111 extends circumferentially around the sleeve 110, ensuring that the internal assembly 200 can be locked in the annular groove 111 regardless of the relative circumferential movement of the internal assembly 200 to the external assembly 100.

[0067] In one embodiment, multiple annular grooves 111 are concentrated in the distal region of the sleeve 110, which is sufficient to meet the number of anchors required for continuous stitching in general situations. In another embodiment, annular grooves 111 can be fully distributed within the axial dimension of the sleeve 110, thereby enabling continuous stitching operations of a larger number of anchors.

[0068] In this embodiment of the invention, the sleeve shaft 120 is connected to the distal end of the sleeve 110. A sleeve shaft 120 cavity is formed inside the sleeve shaft 120, and both ends of the sleeve shaft 120 also have openings that communicate with the sleeve shaft cavity. When the sleeve 110 and sleeve shaft 120 are connected, the proximal end opening of the sleeve 110 and the distal end opening of the sleeve shaft 120 are connected, thereby allowing the mandrel 360 to extend sequentially through the sleeve 110 and the sleeve shaft 120 from the distal end opening of the sleeve shaft 120.

[0069] In one embodiment, the outer wall of the sleeve 110 is provided with a protruding structure that facilitates gripping, ensuring that the operator can grip the sleeve 110 firmly without slipping. For example, the protruding structure is a plurality of rings surrounding the outer wall of the sleeve 110.

[0070] Internal components:

[0071] like Figure 8 a and Figure 8 As shown in b, the internal component 200 of this embodiment of the invention consists of a handle 210, a moving part 220, and a spindle 360. The handle 210 is always located outside the distal end of the sleeve 110 cavity, making it convenient for the operator to hold the handle 210. The moving part 220 can be inserted into the sleeve cavity and can move axially and rotate circumferentially relative to the sleeve cavity. The spindle 360 ​​is connected to the moving part 220. When the operator rotates the handle 210, the moving part 220 and the spindle 360 ​​can move axially and rotate circumferentially as a whole.

[0072] In one embodiment, the moving part 220 is provided with a guide and a pair of elastic parts. The proximal end of the guide extends from the sleeve cavity and is connected to the handle 210. The pair of elastic parts extend from the distal end of the guide, with the free ends of the pair of elastic parts pointing distally. The pair of elastic parts have elastic deformation space at least in directions opposite to each other. For example, the pair of elastic parts are defined as two points on the same circumference, and the pair of elastic parts are arranged at 180-degree intervals on the circumference. The direction of the line connecting the pair of elastic parts is defined as "lateral".

[0073] The guide body is used to mate with the inner wall of the sleeve 110, providing guidance when the inner component 200 performs axial movement and circumferential rotation relative to the outer component 100. In one embodiment, the guide body is provided with guide portions on both lateral sides and a base plate 221 connecting the two guide portions. The cross-sectional profile of the guide portions on both sides is partially circular, increasing the contact area between the guide body and the inner wall of the sleeve 110, thereby ensuring the guiding effect. Exemplarily, the portions of the guide portions on both sides extending distally beyond the base plate 221 are formed as a pair of elastic portions, improving the manufacturability of the inner component 200.

[0074] In one embodiment, an elastomer seat 2211 is provided on the far side of the substrate 221, and the position of the elastomer seat 2211 corresponds to the position of the notch 336 in the assembled locking assembly 300, so that a first elastomer 225 can be provided between the elastomer seat 2211 and the notch 336.

[0075] In one embodiment, a through hole 227 is provided at the center of the handle 210, and a window 228 is provided at the proximal end of the substrate 221 corresponding to the through hole 227, thereby forming a through channel consisting of the through hole 227, the window 228, one side of the substrate 221 and the space between a pair of elastic portions, allowing the locking assembly 300 to pass through the inner assembly 200, and the actuating rod and operating rod 340 of the locking assembly 300 can move axially relative to the inner assembly 200.

[0076] In one embodiment, the pair of elastic portions are a first elastic portion 222 and a second elastic portion 223. The distal end of the first elastic portion 222 has an elastic portion groove 2221 with an opening facing the second elastic portion 223, which is used to cooperate with the base slider 315 provided on the base 310 of the locking assembly 300, thereby connecting the first elastic portion 222 and the base 310 to each other, so that the base 310 and the internal assembly 200 cannot move relative to each other axially. With this configuration, the convex cone portion 434 of the axial locking block 430 can always be aligned with the distal end of the second elastic portion 223, ensuring the axial locking block 430's responsiveness to lateral elastic deformation of the pair of elastic portions. For example, the elastic portion groove 2221 is set as a dovetail groove or a T-shaped groove, thereby preventing lateral loosening between the first elastic portion 222 and the base 310.

[0077] In one embodiment, a locking portion 224 is provided on the outer side of the distal end of the first elastic portion 222 and the second elastic portion 223. When the locking portion 224 is inserted into the annular groove 111, the interaction between the locking portion 224 and the side wall of the annular groove 111 realizes the relative axial movement limitation between the internal component 200 and the external component 100. In this state, if the first elastic portion 222 and the second elastic portion 223 are restricted and cannot perform lateral compression elastic deformation, the relative axial movement between the internal component 200 and the external component 100 cannot be performed.

[0078] In this embodiment of the invention, the mandrel 360 extends a certain distance from the distal end of the sleeve 120, such as... Figure 1As shown in Figure a, multiple mounting positions are sequentially arranged on the extended mandrel 360. Each mounting position is equipped with an anchor assembly 500 using a mounting structure. This mounting structure ensures that the anchor assembly 500 rotates synchronously with the mandrel 360 and that no axial relative movement occurs between the anchor assembly 500 and the mandrel 360 when the axial force is less than the limit value. Simultaneously, when the sleeve 120 pushes the anchor assembly 500 distally with an axial force greater than the limit value, it can force the anchor assembly 500 to disengage from the mounting position. For example, the mandrel 360 can be made of a flexible material.

[0079] In one embodiment, such as Figure 1 As shown in b, the outer periphery of the mandrel 360 has a corresponding slot 361 at each installation position. The card 512 formed by the tubular structure 511 of each anchor assembly 500 can be elastically locked at the slot 361, so that the anchor assembly 500 can rotate and move together with the mandrel 360.

[0080] In one embodiment, each anchor assembly 500 has a gradually decreasing pitch with at least one effective number of turns, the pitch gradually decreasing from the end to facilitate rotation into the wound tissue. For example, an anchor assembly 500 with an appropriate number of effective turns is selected as needed. In another embodiment, each anchor assembly 500 may employ a fixed pitch or a gradually decreasing pitch.

[0081] In one embodiment, the elastomer seat 2211 is further provided with an axially extending strip groove 2212. The distal end of the strip groove 2212 forms an opening, and the proximal end forms a through hole that penetrates the substrate 221. The through hole extends directly into the protrusion 226, forming a bending structure in the proximal end region of the mandrel 360. The proximal end of the mandrel 360 is installed in the strip groove 2212, so that the bending structure of the mandrel 360 is inserted into the protrusion 226 through the through hole, thereby connecting the mandrel 360 and the substrate 221 together through the bending structure.

[0082] Locking component:

[0083] like Figure 5 a, Figure 5 b、 Figure 7 a and Figure 7As shown in b, the locking assembly 300 of this embodiment of the invention comprises a base 310, a transverse locking block 320, an axial locking block 430, an actuating rod 330, an operating rod 340, and a button 350. The axial locking block 430 and the transverse locking block 320 are respectively connected to the far side and the near side of the base 310. The actuating rod 330, the operating rod 340, and the button 350 are connected sequentially from the far side to the near side. The axial locking block 430 and the transverse locking block 320 can only move laterally relative to the base 310, that is, the axial locking block 430, the transverse locking block 320, and the base 310 can move as a whole in the axial direction. The actuating rod 330, the operating rod 340, and the button 350 can also move as a whole in the axial direction, and the first three and the last three can move relative to each other in the axial direction.

[0084] Base:

[0085] In one embodiment, such as Figure 10 a and Figure 10 As shown in b, the main structure of the base 310 is the base body 311. The central region of the base body 311 has a base opening 314 that axially penetrates the base body 311. The size of the base opening 314 is at least large enough to allow the actuating rod 330 to pass through freely, so that the actuating rod 330 engages with the transverse locking block 320 on the near side of the base body 311 and engages with the axial locking block 430 on the far side of the base body 311.

[0086] In one embodiment, a first base groove 313 is formed on the proximal side of the base body 311 for laterally movable connection with the transverse locking block 320. The first base groove 313 can be a closed groove or an open groove. For example, a pair of annular walls 312 are provided on the proximal side of the base body 311, and the annular walls 312 are formed with openings facing the proximal side to obtain an open groove, so that the first base groove 313 is a transverse through groove with a rectangular cross-section.

[0087] In one embodiment, a second base groove 316 is formed on the distal side of the base body 311 for laterally movable connection with the axial locking block. The second base groove 316 can be a closed groove or an open groove. For example, a pair of transverse through grooves with circular cross-sections are directly formed on the distal side of the base body 311.

[0088] In one embodiment, the base body 311 is provided with a base slider 315 that is laterally penetrated by the first base groove 313 and the second base groove 316 at the top or bottom. The base slider 315 is used to cooperate with the elastic part groove 2221 of the first elastic part 222 to achieve a stable connection between the base and the first elastic part 222 and facilitate assembly.

[0089] Horizontal locking block:

[0090] In one embodiment, such as Figure 11 a and Figure 11 As shown in Figure b, the main structure of the transverse locking block 320 is a transverse locking block body 321. The transverse locking block body 321 is rectangular, and its transverse cross-section matches the first base groove 313 of the base, allowing the transverse locking block 320 to move laterally relative to the base within the first base groove 313. For example, transverse locking block grooves 323 are formed on both sides of the transverse locking block body 321, allowing the annular wall 312 to be embedded within the transverse locking block grooves 323. In another embodiment, the cross-sectional shape of the transverse locking block body 321 is consistent with the first base groove 313, so that the transverse locking block body 321 is completely embedded within the first base groove 313.

[0091] In one embodiment, a transverse locking block opening 322 is formed in the middle region of the transverse locking block body 321, which axially penetrates the transverse locking block body 321. The size of the transverse locking block opening 322 is at least large enough to allow the actuating rod to pass through freely. During the transverse movement of the transverse locking block between the transverse locking position and the transverse unlocking position, the actuating rod can still pass through the transverse locking block opening 322 freely.

[0092] In one embodiment, a pair of axially extending protrusions 324 are formed on the inner wall of the lateral locking block opening 322 near the second elastic portion 223. The axial extension dimension, lateral dimension, and position of the protrusions 324 are matched with the relief groove 334 of the actuating rod. The protrusion ramp 325 matches the first actuating rod ramp 335 in the relief groove 334 of the actuating rod. During the movement of the actuating rod 330 to the proximal side, the protrusion ramp 325 and the first actuating rod ramp 335 cooperate with each other, thereby pushing the lateral locking block 320 to move laterally toward the second elastic portion 223.

[0093] In another embodiment, a transverse locking block ramp 326 is formed on the inner wall of the transverse locking block opening 322 near the first elastic part 222. The transverse locking block ramp 326 matches the second actuation rod ramp 338 of the actuation rod 330. During the movement of the actuation rod 330 to the distal side, the transverse locking block ramp 326 and the second actuation rod ramp 338 cooperate with each other, thereby pushing the transverse locking block 320 to move laterally toward the first elastic part 222.

[0094] Axial locking block:

[0095] In one embodiment, such as Figure 12 a and Figure 12As shown in b, the main structure of the axial locking block 430 is the axial locking block body 431. A pair of axial locking block slide bars 433 extending laterally are provided on the side of the axial locking block body 431 near the base. The axial locking block slide bars 433 can be inserted into the second base slide groove 316 of the base and move freely in the second base slide groove 316, thereby guiding the relative lateral movement between the axial locking block 430 and the base 310.

[0096] In one embodiment, a pair of convex cones 434 are provided on the far side of the axial locking block body 431. The cone apex of the convex cone 434 points towards the second elastic part 223 and is used to contact the second elastic part 223, so that the axial locking block 430 is pressed by the second elastic part 223 against the first elastic part 222.

[0097] In one embodiment, the axial locking block body 431 near the second elastic portion 223 has an axial locking block body 431 arc slope facing the proximal side. During the movement of the actuator rod 330 to the distal side, the axial locking block arc slope 432 is used to cooperate with the third actuator rod ramp 3312 formed at the distal end of the nose portion 331 of the actuator rod 330, thereby pushing the axial locking block 430 to move laterally toward the first elastic portion 222.

[0098] In one embodiment, a second elastic body (not shown in the figure) is further provided between the axial locking block 430 and the first elastic part 222. When the axial locking block 430 is pushed laterally toward the first elastic part 222 by the actuating rod 330, the second elastic body is compressed by the axial locking block 430 and the first elastic part 222. When the actuating rod 330 continues to move distally until the nose groove 339 of the actuating rod 330 is aligned with the top edge of the axial locking block arc slope 432, the elastic restoring force of the second elastic body pushes the axial locking block 430 to move laterally toward the second elastic body, so that the top edge of the axial locking block arc slope 432 is engaged in the nose groove 339, thereby restricting the axial movement of the actuating rod 330.

[0099] In one embodiment, the top edge of the axial locking block body ramp 432 forms a notch 435 in the central region. The notch 435 is used to make way for the mandrel 360, allowing the mandrel 360 to pass through the notch 435. Exemplarily, the notch 435 is configured as a partially circular profile.

[0100] Actuator lever:

[0101] In one embodiment, such as Figure 6 a and Figure 6 As shown in b, the actuator 330 is provided with a nose 331, a head 332 and a tail 333 in sequence from the far side to the near side. The center line of symmetry of the nose 331 is offset from the center line of symmetry of the head 332 and the tail 333, which is used to compensate for the opposite direction offset of the operating lever 340 to avoid the substrate 221 of the internal component 200.

[0102] In one embodiment, the head 332 of the actuating rod has an arched structure, and a notch 336 is formed at the proximal end of the arched structure (i.e., the distal end of the tail 333). A first elastic body 225 is disposed in the arched structure, and one end of the first elastic body is pressed into the notch 336.

[0103] In one embodiment, the proximal end of the tail portion 333 is provided with an actuator rod groove 337 for matching with the slider of the operating lever 340 provided at the distal end of the operating lever 340, thereby connecting the actuator rod 330 to the distal end of the operating lever 340, enabling the button 350, the operating lever 340, and the actuator rod 330 to move axially as a whole. Exemplarily, the actuator rod groove 337 is a dovetail-shaped groove.

[0104] In one embodiment, a third actuating rod ramp 3312 is formed on the distal end of the nose portion 331 near the first elastic portion 222. The third actuating rod ramp 3312 is used to cooperate with the axial locking block ramp 432, and the axial movement of the third actuating rod ramp 3312 pushes the axial locking block 430 to move laterally toward the first elastic portion 222.

[0105] In one embodiment, a pair of axially extending and laterally penetrating the nose 331 are provided in the middle region of the nose 331. The size and position of the axially extending and laterally penetrating the nose 331 are matched with the protrusion 324 of the lateral locking block 320, thereby allowing the protrusion 324 to move into the axially extending and laterally penetrating the lateral locking block 320.

[0106] In one embodiment, a nose groove 339 is formed in the distal region of the clearance groove 334. The nose groove 339 extends through the nose 331 along longitudinal directions orthogonal to the axial direction and the transverse direction, respectively. The nose groove 339 is used to be engaged by the top edge of the axial locking block ramp 432, thereby restricting the axial movement of the actuator rod 330.

[0107] In one embodiment, the nose portion 331 has an overall shape that is shorter on the distal side and higher on the proximal side along the axial direction. A second actuating rod ramp 338 is formed between the high and low structures. The second actuating rod ramp 338 is formed on the side surface of the nose portion 331 facing the first elastic portion 222 and is used to cooperate with the lateral locking block ramp 326, thereby pushing the lateral locking block 320 to move laterally toward the first elastic portion 222 by the actuating rod 330.

[0108] In one embodiment, a through-hole 3313 is formed axially inside the nose portion 331, and the mandrel 360 passes through the nose portion 331 via the through-hole 3313, and then extends out of the sleeve 110 and the sleeve shaft 120.

[0109] In one embodiment, a first actuating rod ramp 335 is formed at the distal end of the clearance groove 334 for cooperating with the protruding rib ramp 325, thereby pushing the lateral locking block 320 to move laterally toward the second elastic portion 223 via the actuating rod 330.

[0110] Work process:

[0111] Locking component 300 is in the locked state: such as Figure 3 a and Figure 4 As shown in diagram a, at this time, the locking portions 224 of a pair of elastic parts are embedded in the annular groove 111 on the inner wall of the sleeve 110 at the farthest side. The actuating rod 330 is located in the first axial position near the proximal side, and the lateral locking block 320 is located in the lateral locking position near the second elastic part 223. The axial locking block 430 is pushed by the second elastic body to the position near the second elastic part 223. Since the protrusion 324 of the lateral locking block 320 is restricted by the nose 331 of the actuating rod 330 near the side surface of the second elastic part 223, the lateral locking block 320 cannot move laterally toward the first elastic part 222. That is, the pair of elastic parts are restricted from moving laterally toward each other, so that the operator cannot push the outer component 100 relative to the inner component 200 (or pull the inner component 200 relative to the outer component 100), and the anchor assembly 500 will not be pushed by the sleeve shaft 120.

[0112] Locking component 300 is in the unlocked state: such as Figure 3 b and Figure 4 As shown in b, at this time, the locking portions 224 of the pair of elastic parts are still embedded in the annular groove 111 located at the farthest side of the inner wall of the sleeve 110. The operator moves the actuator rod 330 to the second axial position spindle 360 ​​by pressing the button 350. In the initial stage, with the help of the second mating slope pair formed by the second actuator rod ramp 338 and the transverse locking block ramp 326, the transverse locking block 320 moves laterally toward the first elastic part 222 to the transverse unlocking position. During this process, the protrusion 324 of the transverse locking block 320 can move into the relief groove 334 of the actuator rod 330. In the intermediate stage, as the actuator rod 330 continues to move towards the second axial position, the axial locking block 430 moves towards the first elastic part 222 to the axial unlock position with the help of the first mating slope pair formed by the third actuator rod ramp 3312 and the axial locking block arc ramp 432. The top edge of the axial locking block arc ramp 432 abuts against the side surface of the nose 331 of the actuator rod near the first elastic part 222. In the final stage, when the actuator rod 330 moves to the second axial position, under the action of the elastic restoring force of the second elastic body, the top edge of the axial locking block arc ramp 432 is engaged in the nose groove 339 of the actuator rod, and the actuator rod 330 cannot move the spindle 360 ​​axially.

[0113] Replacement of anchor assembly 500: When the tip 513 of the anchor assembly 500 at the farthest installation position of the mandrel 360 is inserted into the wound tissue, the operator pushes the outer component 100 relative to the inner component 200 (or pulls the inner component 200 relative to the outer component 100), and a pair of elastic parts undergo lateral elastic compression, causing the locking part 224 to disengage from the farthest annular groove 111. Then, lateral elastic rebound occurs, causing the locking part 224 to embed into the penultimate annular groove 111. During this process, the spindle 360 ​​moves axially toward the near side relative to the sleeve shaft 120. The second elastic part 223 contacts the cone part 434 and pushes the axial locking block 430 to move laterally toward the first elastic part 222 until the top edge of the axial locking block arc slope 432 disengages from the nose groove 339 of the actuator rod 330. Under the action of the elastic restoring force of the first elastic body 225, the actuator rod 330 returns to the first axial position. With the help of the third mating slope pair formed by the first actuator rod slope 335 and the convex slope 325, the lateral locking block 320 moves laterally toward the second elastic part 223 to return to the lateral locking state. At this time, if the operator does not press button 350 again, since the transverse locking block 320 is in a transversely locked state, the pair of elastic parts cannot be transversely elastically compressed again. That is, the operator can only move the sleeve shaft 120 axially to the farthest side relative to the spindle 360 ​​by one unit distance. The size of this unit distance is consistent with the distance between the adjacent installation positions of the spindle 360 ​​and the adjacent annular grooves 111 of the sleeve 110, thereby ensuring accurate operation. The anchor assembly 500 at the second to last installation position on the spindle 360 ​​replaces the anchor assembly 500 at the farthest installation position.

[0114] The descriptions of the embodiments herein, including any references to directions and orientations, are for ease of description only and should not be construed as limiting the scope of the invention. The description of preferred embodiments involves combinations of features, which may exist independently or in combination; the invention is not particularly limited to the preferred embodiments. The scope of the invention is defined by the claims.

[0115] The above are merely preferred embodiments of the present invention and are not intended to limit the present invention. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present invention should be included within the protection scope of the present invention.

Claims

1. A continuous suturing system for suturing wounds under endoscopic guidance, characterized in that, include: The external component is provided with a sleeve and a sleeve shaft connected to the distal end of the sleeve. The proximal end opening of the sleeve and the distal end opening of the sleeve shaft are connected through the sleeve cavity and the sleeve shaft cavity. The inner wall of the sleeve is formed with a plurality of annular grooves arranged along the axial direction, and each annular groove extends around the sleeve circumferentially. The internal components include a handle, a movable part connected to the distal end of the handle, and a mandrel connected to the movable part. A through channel is formed inside the handle. The movable part can move axially and rotate circumferentially within the sleeve cavity, driving the mandrel to move as a whole. The movable part is provided with a pair of elastic parts that can deform laterally toward each other. Each elastic part is provided with a retaining part on its outer side. The elastic parts can be in a lateral elastic rebound state when the retaining part is inserted into the annular groove and in a lateral elastic compression state when the retaining part is located between the annular grooves and disengaged from the annular grooves. When the retaining part is inserted into the annular groove at the farthest position, the mandrel can extend a certain distance from the distal end of the sleeve shaft to form multiple installation positions for installing anchor components arranged axially. A locking assembly has a locked state that restricts the elastic portion to the lateral elastic rebound state, and an unlocked state that allows the elastic portion to deform to the lateral elastic compression state. The locking assembly includes: The base is connected to one of the elastic parts; A lateral locking block, connected to the base, and capable of moving laterally relative to the base between a lateral locked position and a lateral unlocked position; An actuating rod is movable relative to the base along the axial direction between a first axial position near the proximal side and a second axial position near the distal side. The actuating rod is adapted to a lateral locking block such that when the actuating rod is in the first axial position, the lateral locking block can be restricted to a laterally locked position by the actuating rod, thereby restricting the elastic portion of the lateral locking block to the lateral elastic rebound state to achieve the locked state. When the actuating rod moves from the first axial position to the second axial position, the lateral locking block can be actuated to a laterally unlocked position by the actuating rod, thereby allowing the elastic portion of the lateral locking block to deform to the lateral elastic compression state to achieve the unlocked state. And when the actuating rod moves from the second axial position to the first axial position, the lateral locking block can be actuated to a laterally locked position by the actuating rod, thereby restricting the elastic portion of the lateral elastic rebound state to achieve the locked state again. An axial locking block is used to operably restrict the actuator rod in the second axial position; Multiple anchor assemblies and sutures, each anchor assembly being able to be positioned in the installation position and being able to be pushed out of the installation position by a sleeve shaft, with the sutures passing sequentially through the loops of each anchor assembly.

2. The continuous suture system according to claim 1, characterized in that, The axial locking block is connected to the base and can move laterally relative to the base between an axially locked position and an axially unlocked position. The actuating rod is adapted to the axial locking block so that when the actuating rod is in the first axial position, the axial locking block can be pressed into the axially locked position by the elastic restoring force of the elastic body. When the actuating rod moves from the first axial position to the second axial position, the axial locking block can be actuated by the brake rod to overcome the elastic restoring force to the axially unlocked position, and then pressed into the axially locked position by the elastic restoring force.

3. The continuous suture system according to claim 2, characterized in that, The axial locking block is adapted to the elastic part so that when the elastic part deforms from the elastic rebound state to the elastic compression state, the axial locking block can be actuated by the elastic part from the axial locking position to the axial unlocking position.

4. The continuous suture system according to claim 3, characterized in that, The axial locking block is provided with an axial locking block body and a convex cone portion. The axial locking block body is connected to the base through a slide rail pair. The convex cone portion is provided on the axial locking block body and the cone tip points to another elastic portion, so that when the elastic portion deforms from the elastic rebound state to the elastic compression state, the other elastic portion can contact the cone tip of the convex cone, thereby actuating the axial locking block from the axial locking position to the axial unlocking position by the elastic portion.

5. The continuous suture system according to claim 2, characterized in that, The transverse locking block and the axial locking block are connected to the near and far sides of the base respectively via a slide rail pair. The base has an axially penetrating opening to allow the actuating rod to pass through the opening and move relative to the base axially between a first axial position near the near side and a second axial position near the far side.

6. The continuous suture system according to claim 5, characterized in that, The actuating rod and the axial locking block are adapted to each other through the first mating slope pair.

7. The continuous suture system according to claim 1, characterized in that, The actuating rod and the transverse locking block are adapted to each other via a second mating ramp pair, so that when the actuating rod moves from the first axial position to the second axial position, the transverse locking block can be actuated to the transverse unlock position by the actuating rod. The actuating rod and the transverse locking block are adapted to each other via a third mating ramp pair, so that when the actuating rod moves from the second axial position to the first axial position, the transverse locking block can be actuated to the transverse locking position by the actuating rod.

8. The continuous suture system according to claim 7, characterized in that, The actuating rod has an axially extending relief groove, and the transverse locking block is provided with a protrusion that matches the relief groove. When the actuating rod is in the first axial position, the protrusion abuts against the transverse locking block and cannot move into the relief groove, thereby restricting the transverse locking block to the transverse locked position by the actuating rod. When the actuating rod moves from the first axial position to the second axial position, the protrusion can move laterally into the relief groove, thereby actuating the transverse locking block to the transverse unlocked position by the actuating rod.

9. The continuous suture system according to claim 8, characterized in that, The distal end of the actuating rod, facing an elastic part, together with the transverse locking block bottom beam, forms the inclined surface of the second mating slope pair, and the distal end of the relief groove of the actuating rod together with the protrusion forms the third mating slope pair.

10. The continuous suture system according to claim 1, characterized in that, The actuating rod can be driven by the elastic restoring force of the elastic body to move from the second axial position to the first axial position; and / or, each of the anchor components is provided with a gradually changing pitch of at least one effective number of turns; and / or, each of the anchor components is provided with a fixed pitch or a gradually changing pitch.

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