Single anchor mechanism and suturing device

Abstract

The invention provides a single anchor mechanism and a suturing device, and relates to the technical field of medical suturing, the single anchor mechanism provided by the invention comprises an anchor part, a transmission pipe fitting, a traction line and a limiting part; one end of the pull wire is connected with the anchor part, and the pull wire penetrates through the transmission pipe fitting; the end parts, opposite to the transmission pipe fitting, of the anchor piece are provided with matched joint parts; the limiting piece is connected to the pull wire and abuts against the end, away from the anchor piece, of the transmission pipe. According to the single anchor mechanism and the sewing device, through tensioning of the pull wire, the anchor part and the transmission pipe fitting can be kept in close fit through the joint part, and assembling is convenient. And the transmission pipe fitting can be detached from the pull wire by removing the limiting piece, so that the operation is more convenient.

Description

Technical Field

[0001] The invention relates to the technical field of medical suturing, in particular to a single anchor mechanism and a suturing device. Background Art

[0002] When a spiral anchor is used to connect a traction line, a spring tube is usually required to drive the anchor to rotate, so that the spiral anchor can be combined and drill into the sutured tissue. In the prior art, in order to ensure the transmission of the spring tube and the anchor, the anchor needs to be connected to the spring tube, and a key or pin needs to be used for circumferential limiting. After the anchor is fixed, the spring tube needs to be withdrawn to facilitate the operation of the traction line, and the connection between the spring tube and the anchor needs to be released. The operator needs to use external force to bend or break the key or pin to cause failure. Not only is the structure of the instrument difficult to process and assemble, which leads to high manufacturing costs of the equipment, but the operating force required to separate the spiral anchor from the spring tube is large, and the spring tube withdrawal operation is inconvenient. Summary of the invention

[0003] The object of the present invention is to provide a single anchor mechanism and a suturing device to alleviate the technical problems in the prior art that the single anchor mechanism is difficult to assemble and the transmission pipe is inconvenient to withdraw.

[0004] In a first aspect, the single anchor mechanism provided by the present invention comprises: an anchor, a transmission pipe, a traction line and a limiter;

[0005] One end of the traction line is connected to the anchor, and the traction line passes through the transmission pipe;

[0006] The ends of the anchor member and the transmission pipe member opposite to each other are provided with matching joints;

[0007] The limiting member is connected to the pulling line, and the limiting member abuts against the end of the transmission pipe member away from the anchor member.

[0008] In combination with the first aspect, the present invention provides a first possible implementation manner of the first aspect, wherein the limiting member comprises a polymer elastic member, and the polymer elastic member has a clamping portion;

[0009] The pulling wire is interference-fitted with the wire clamping portion;

[0010] The polymer elastic member abuts against the end of the transmission pipe member away from the anchor member.

[0011] In combination with the first aspect, the present invention provides a second possible implementation manner of the first aspect, wherein the transmission pipe member comprises: a spring tube and a coupling member, and the coupling member is connected to the spring tube.

[0012] In combination with the second possible implementation of the first aspect, the present invention provides a third possible implementation of the first aspect, wherein the joint includes a first connector provided on the joint, and the first connector is adapted to the proximal end of the anchor.

[0013] In combination with the first aspect, the present invention provides a fourth possible implementation of the first aspect, wherein the single anchor mechanism further includes: a handle and a rotating wheel;

[0014] The transmission pipe is passed through the handle, and the transmission pipe is connected to the rotating wheel, and the rotating wheel is coaxial with the transmission pipe.

[0015] In combination with the fourth possible implementation of the first aspect, the present invention provides a fifth possible implementation of the first aspect, wherein the handle is provided with a stop and limit member, and the stop and limit member abuts against the circumferential surface of the rotating wheel.

[0016] In combination with the fifth possible implementation of the first aspect, the present invention provides a sixth possible implementation of the first aspect, wherein the circumferential surface of the rotating wheel is provided with a clamping portion adapted to the stop and limit member;

[0017] A plurality of the fixing parts are arranged at intervals along the circumference of the rotating wheel;

[0018] Alternatively, a plurality of the fixing portions are arranged at intervals along the axial direction of the rotating wheel.

[0019] In combination with the fourth possible implementation of the first aspect, the present invention provides a seventh possible implementation of the first aspect, wherein an outer tube is installed at the distal end of the handle, and the anchor and the transmission tube are both inserted into the outer tube.

[0020] In combination with the seventh possible implementation manner of the first aspect, the present invention provides an eighth possible implementation manner of the first aspect, wherein the handle is provided with a hollow limiting groove, and the hollow limiting groove extends along the axial direction of the outer tube;

[0021] The rotating wheel is located inside the hollow limiting groove, the rotating wheel moves along the hollow limiting groove, and has a forward stop point position and a backward stop point position;

[0022] At the forward stop position, the rotating wheel moves to the distal end of the hollow limiting groove, and the anchor extends outwardly to the outside of the outer tube;

[0023] At the retraction stop position, the rotating wheel moves to the proximal end of the hollow limiting groove, and the anchor is retracted into the inner part of the outer tube.

[0024] In combination with the seventh possible implementation manner of the first aspect, the present invention provides a ninth possible implementation manner of the first aspect, wherein a distal end surface of the outer tube is provided with a tooth portion.

[0025] In combination with the first aspect, the present invention provides a tenth possible implementation manner of the first aspect, wherein the anchor comprises an anchor head tube, and the traction line is connected to the anchor head tube;

[0026] The circumferential surface of the anchor head pipe is provided with a spiral groove, and a spiral thorn is formed along the circumference of the anchor head pipe, and a tip is provided at the distal end of the spiral thorn.

[0027] In combination with the tenth possible implementation manner of the first aspect, the present invention provides an eleventh possible implementation manner of the first aspect, wherein the spiral thorn has a barb facing the spiral groove and inclined along the spiral groove away from the tip.

[0028] In combination with the tenth possible implementation manner of the first aspect, the present invention provides a twelfth possible implementation manner of the first aspect, wherein the anchor further comprises a joint, and the joint is connected to the anchor head pipe;

[0029] The joint portion includes a second plug-in portion provided on the joint, and the second plug-in portion is adapted to the transmission pipe;

[0030] The joint is provided with an axial through hole, the traction line passes through the axial through hole, and the distal end of the traction line is provided with a convex head, and the convex head abuts against the distal end of the joint.

[0031] In combination with the tenth possible implementation manner of the first aspect, the present invention provides a thirteenth possible implementation manner of the first aspect, wherein the proximal end of the anchor head tube is provided with a second connector matched with the transmission pipe.

[0032] In combination with the first aspect, the present invention provides a fourteenth possible implementation manner of the first aspect, wherein the anchor comprises: an anchor head base and a spiral member;

[0033] The proximal end of the anchor head base is connected to the transmission pipe, and the distal end of the anchor head base is provided with a tip;

[0034] The spiral element is connected to the anchor head base and extends along the circumference of the anchor head base.

[0035] In combination with the fourteenth possible implementation manner of the first aspect, the present invention provides a fifteenth possible implementation manner of the first aspect, wherein a plurality of stop grooves are provided on the spiral member, and the plurality of stop grooves are arranged at intervals along the spiral direction of the spiral member.

[0036] In a second aspect, the suturing device provided by the present invention comprises: a thread taking-up mechanism, a locking and cutting mechanism, and the single anchor mechanism described in the first aspect;

[0037] The traction line passes through the locking and cutting mechanism, and the locking and cutting mechanism is used to lock the traction line and cut off the excess traction line.

[0038] The embodiment of the present invention brings the following beneficial effects: one end of the traction line is connected to the anchor, and the traction line passes through the transmission pipe, and the ends of the anchor and the transmission pipe opposite to each other are provided with matching joints, the limiter is connected to the traction line, and the limiter abuts against the end of the transmission pipe away from the anchor, the traction line is fixed by the limiter, and the traction line is tensioned, so that the anchor and the transmission pipe can be kept in close cooperation through the joint, and no key or pin structure is required, which is convenient for assembly. Moreover, the transmission pipe can be removed from the traction line by removing the limiter, which is more convenient to operate.

[0039] In order to make the above-mentioned objects, features and advantages of the present invention more obvious and easy to understand, preferred embodiments are given below and described in detail with reference to the accompanying drawings. BRIEF DESCRIPTION OF THE DRAWINGS

[0040] In order to more clearly illustrate the specific embodiments of the present invention or the technical solutions in the related technologies, the drawings required for use in the specific embodiments or the related technical descriptions will be briefly introduced below. Obviously, the drawings described below are some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative work.

[0041] Figure 1 A schematic diagram of an anchor, a transmission pipe, a traction line, a stopper and a sheath of a single anchor mechanism provided in an embodiment of the present invention;

[0042] Figure 2 A cross-sectional view of an anchor, a transmission pipe, a traction line and a joint portion of a single anchor mechanism provided by an embodiment of the present invention;

[0043] Figure 3 A schematic diagram of a joint member of a single anchor mechanism provided in an embodiment of the present invention;

[0044] Figure 4 A schematic diagram of a first anchor, a second connector and a traction line of a single anchor mechanism provided in an embodiment of the present invention;

[0045] Figure 5 A schematic diagram of a second anchor member of a single anchor mechanism provided in an embodiment of the present invention;

[0046] Figure 6 A schematic diagram of a third anchor member of a single anchor mechanism provided in an embodiment of the present invention;

[0047] Figure 7 A schematic diagram of a fourth anchor member of a single anchor mechanism provided in an embodiment of the present invention;

[0048] Figure 8 A cross-sectional view of a spring tube, a traction line, a stopper and a sheath of a single anchor mechanism provided in an embodiment of the present invention;

[0049] Fig. 9 A cross-sectional view of a single anchor mechanism provided by an embodiment of the present invention;

[0050] Fig.10 A schematic diagram of a single anchor mechanism provided by an embodiment of the present invention;

[0051] Fig.11 A cross-sectional view of a handle and a rotating wheel of a single anchor mechanism provided by an embodiment of the present invention;

[0052] Fig.12 for Fig.11 Schematic diagram of the corresponding rotating wheel;

[0053] Fig.13 A schematic diagram of another handle and a rotating wheel of a single anchor mechanism provided in an embodiment of the present invention;

[0054] Fig.14 for Fig.13 Schematic diagram of the corresponding rotating wheel;

[0055] Fig.15 A schematic diagram of the distal end of an outer tube of a single anchor mechanism provided in an embodiment of the present invention.

[0056] Icons: 100-anchor; 101-tip; 102-barb; 103-retraction notch; 110-anchor head tube; 111-spiral barb; 120-joint; 121-axial through hole; 130-anchor head base; 140-screw; 200-transmission pipe; 210-spring tube; 220-joint; 300-traction line; 301-protrusion; 400-limiting member; 500-joining part; 501-first plug-in part; 502-second plug-in part; 600-sheath; 700-handle; 701-hollow limiting groove; 710-retraction limiting member; 711-first limiting spring sheet; 712-second limiting spring sheet; 800-rotating wheel; 801-fixing part; 900-outer tube; 901-tooth part. DETAILED DESCRIPTION

[0057] The technical solution of the present invention will be described clearly and completely below in conjunction with the accompanying drawings. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0058] In the description of the present invention, it should be noted that the terms "center", "up", "down", "left", "right", "vertical", "horizontal", "inside", "outside" and the like indicate positions or positional relationships based on the positions or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as limiting the present invention. In addition, the terms "first", "second", and "third" are used for descriptive purposes only and cannot be understood as indicating or implying relative importance. Physical quantities in formulas, if not separately marked, should be understood as basic quantities of the base units of the International System of Units, or derived quantities derived from the basic quantities through mathematical operations such as multiplication, division, differentiation or integration.

[0059] In the description of the present invention, it should be noted that, unless otherwise clearly specified and limited, the terms "installed", "connected" and "connected" should be understood in a broad sense. For example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection, or it can be indirectly connected through an intermediate medium, or it can be a connection between the two components. The "proximal end" and "distal end" in the text are based on the product operator. The end located outside the body and can be held by hand is the proximal end, and the end that can be implanted in the patient's body and away from the operator is the distal end. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0060] like Figure 1 , Figure 8 and Fig. 9 As shown, the single anchor mechanism provided by the embodiment of the present invention includes: an anchor 100, a transmission tube 200, a traction line 300 and a limit member 400; one end of the traction line 300 is connected to the anchor 100, and the traction line 300 passes through the transmission tube 200; the ends of the anchor 100 and the transmission tube 200 opposite to each other are provided with a matching joint 500; the limit member 400 is connected to the traction line 300, and the limit member 400 abuts against the end of the transmission tube 200 away from the anchor 100.

[0061] The position of the anchor 100 is used as the distal end of the transmission tube 200, and the position of the stopper 400 is used as the proximal end of the transmission tube 200. By pulling the traction line 300 toward the proximal end and locking the stopper 400 on the traction line 300, the traction line 300 inside the transmission tube 200 can be kept in a tensioned state. Under the tension of the traction line 300, the anchor 100 and the transmission tube 200 can be kept in a joint state through the joint 500. There is no need to set a key or pin structure to connect the anchor 100 and the transmission tube 200, which is convenient for the assembly of a single anchor mechanism. In addition, after the anchor 100 is anchored to the tissue to be sutured, the transmission tube 200 can be removed from the traction line 300 by removing the stopper 400, which is convenient for the subsequent tightening operation of the traction line 300.

[0062] In an embodiment of the present invention, the limiting member 400 includes a polymer elastic member, which may be made of materials such as silicone or rubber. The polymer elastic member has a wire clamping portion, which is configured as a wire hole or a wire groove. The traction line 300 passes through the wire clamping portion and has an interference fit with the wire clamping portion. The polymer elastic member abuts against the end of the transmission pipe 200 that is away from the anchor 100.

[0063] When the traction line 300 is pulled toward the proximal end, the polymer elastic member is kept in contact with the end of the transmission tube 200 away from the anchor 100 by external force operation, and the wire clamping part of the polymer elastic member contracts to clamp and fix the traction line 300, so that the traction line 300 located inside the transmission tube 200 can be kept taut.

[0064] In other optional embodiments, the limit member 400 may be a device such as a wire clamp, and the limit member 400 may be detachably connected to the traction line 300, and the limit member 400 may abut against the end of the transmission tube 200 away from the anchor 100, thereby keeping the traction line 300 located inside the transmission tube 200 taut.

[0065] like Figure 1 , Figure 2 and Figure 3 As shown, the transmission pipe 200 includes: a spring tube 210 and a joint 220, and the joint 220 is connected to the spring tube 210. The joint 500 includes a first plug part 501 disposed on the joint 220, and the first plug part 501 is adapted to the proximal end of the anchor 100.

[0066] Specifically, the first connector 501 is configured as a protrusion or a slot, and the first connector 501 cooperates with the anchor 100 to achieve circumferential limitation of the transmission tube 200 and the anchor 100, so that the transmission tube 200 can drive the anchor 100 to achieve synchronous rotation.

[0067] like Figure 1 , Figure 8 and Fig. 9As shown, a sheath 600 is sleeved on one end of the spring tube 210 away from the coupling member 220 , and the sheath 600 abuts against the limiting member 400 .

[0068] Specifically, the spring tube 210 can be made of a wire structure, and the sheath 600 is wrapped around the end of the spring tube 210 that is away from the connector 220. The spring tube 210 is protected by the sheath 600, so as to avoid the limit member 400 pushing against the spring tube 210 to cause the wire to scatter, thereby maintaining the structural stability of the spring tube 210.

[0069] like Fig. 9 , Fig.10 , Fig.11 , Fig.12 , Fig.13 and Fig.14 As shown, the single anchor mechanism further includes: a handle 700 and a rotating wheel 800 ; the transmission pipe 200 is passed through the handle 700 , and the transmission pipe 200 is connected to the rotating wheel 800 , and the rotating wheel 800 is coaxial with the transmission pipe 200 .

[0070] The transmission tube 200 can be driven to rotate by operating the rotating wheel 800. When the transmission tube 200 and the anchor 100 are docked, the transmission tube 200 drives the anchor 100 to rotate synchronously, so that the anchor 100 can be screwed into the tissue to be sutured, thereby achieving anchoring.

[0071] See also Fig.11 , Fig.12 , Fig.13 and Fig.14 The handle 700 is provided with a stop-retract limit member 710 , and the stop-retract limit member 710 abuts against the circumferential surface of the rotating wheel 800 .

[0072] Furthermore, a fixing portion 801 adapted to the stop and limit member 710 is provided on the circumferential surface of the rotating wheel 800 .

[0073] like Fig. 9 , Fig.11 and Fig.12 As shown, in one embodiment, the fixing portion 801 is configured as a groove extending along the axial direction of the rotating wheel 800, and a plurality of grooves are arranged at intervals along the circumference of the rotating wheel 800. The stop limiter 710 includes a first limit spring piece 711. In the process that the rotating wheel 800 drives the transmission pipe 200 to rotate and drives the anchor 100 to penetrate into the tissue to be sutured, the rotation direction of the rotating wheel 800 is defined as the first rotation direction, and the first limit spring piece 711 is inclined in the direction close to the axis of the rotating wheel 800 along the first rotation direction. A plurality of fixing portions 801 are arranged at intervals along the circumference of the rotating wheel 800. When the rotating wheel 800 is rotated along the first rotation direction, the first limit spring piece 711 is elastically deformed to avoid the fixing portion 801, and the first limit spring piece 711 can abut against the fixing portion 801, thereby preventing the rotating wheel 800 from reversing.

[0074] like Fig.13 and Fig.14 As shown, in another embodiment, a plurality of fixing parts 801 are arranged at intervals along the axial direction of the rotating wheel 800, the stop limiter 710 includes a second limit spring piece 712, the distal end of the second limit spring piece 712 is inclined from the proximal end to the distal end toward the axis direction of the rotating wheel 800, the fixing part 801 includes a plurality of protrusions, and the protrusions have an inclined surface inclined from the proximal end to the distal end toward the axis direction of the rotating wheel 800, and the plurality of protrusions are arranged at intervals along the axial direction of the rotating wheel 800 to form a group of protrusion combinations, and the plurality of groups of protrusion combinations are arranged at intervals along the circumference of the rotating wheel 800. When the rotating wheel 800 is pushed toward the distal end, the protrusions can push the second limit spring piece 712, so that the second limit spring piece 712 avoids the rotating wheel 800, and the second limit spring piece 712 can block the rotating wheel 800 from moving toward the proximal end.

[0075] like Fig. 9 , Fig.10 , Fig.10 and Fig.15 As shown, an outer tube 900 is installed at the distal end of the handle 700 , and the anchor 100 and the transmission tube 200 are both inserted into the outer tube 900 .

[0076] During the anchoring operation, first place the distal end of the outer tube 900 against the edge of the wound to be sutured, hold the handle 700, and push the rotating wheel 800 toward the distal end until the anchor 100 contacts the tissue to be sutured. Then rotate the rotating wheel 800, drive the anchor 100 to rotate synchronously through the transmission pipe 200, and the anchor 100 can be screwed into the tissue to be sutured. After anchoring, the outer tube 900 can be driven away from the wound to be sutured by pulling the handle 700, so as to observe the depth of the anchor 100 entering the tissue to be sutured. The operator keeps the rotating wheel 800 and the transmission pipe 200 fixed with one hand, and removes the limiter 400 with the other hand, so that the transmission pipe 200, the sheath 600, the handle 700, the rotating wheel 800 and the outer tube 900 can be removed together.

[0077] Furthermore, the handle 700 is provided with a hollow limit groove 701, which extends along the axial direction of the outer tube 900; the rotating wheel 800 is located inside the hollow limit groove 701, and the rotating wheel 800 moves along the hollow limit groove 701, and has a forward stop point position and a retract stop point position.

[0078] At the forward stop position, the rotating wheel 800 moves to the distal end of the hollow limit groove 701, and the anchor 100 extends outward to the outside of the outer tube 900; at the retracted stop position, the rotating wheel 800 moves to the proximal end of the hollow limit groove 701, and the anchor 100 shrinks to the inside of the outer tube 900. The hollow limit groove 701 limits the movable stroke of the rotating wheel 800 in the axial direction of the transmission tube 200, which not only limits the depth of the anchor 100 penetrating into the tissue to be sutured, but also prevents the rotating wheel 800 and the transmission tube 200 from falling off the handle 700, thereby improving the compactness of the structure.

[0079] Furthermore, the distal end surface of the outer tube 900 is provided with a tooth portion 901, and a plurality of tooth portions 901 are arranged at intervals along the circumference of the outer tube 900. The tooth portions 901 abut against the surface of the tissue to be sutured, and the anchor 100 rotates and penetrates into the tissue to be sutured. The tooth portions 901 can prevent the tissue to be sutured from rotating with the anchor 100, thereby preventing the mucosal tissue from being entangled on the anchor 100. Preferably, the tooth portion 901 can be configured as a ratchet, and the direction of rotation of the ratchet is opposite to the spiral direction of the anchor 100. In other words, the reverse ratchet rotated along the anchor 100 forms a tip, and thus the ratchet can prevent the mucosal tissue from being entangled on the anchor 100.

[0080] like Figure 1 , Figure 2 , Figure 4 and Figure 5 As shown, the anchor 100 includes an anchor head tube 110, and the traction line 300 is connected to the anchor head tube 110; the circumferential surface of the anchor head tube 110 is provided with a spiral groove, and a spiral thorn 111 is formed along the circumference of the anchor head tube 110, and the distal end of the spiral thorn 111 is provided with a tip 101. By rotating the anchor head tube 110, the spiral thorn 111 can be drilled into the tissue to be sutured, and the tissue to be sutured is filled into the spiral groove, thereby preventing the anchor 100 from being detached from the inside of the tissue to be sutured.

[0081] Further, the spiral thorn 111 has a barb 102 that faces the spiral groove and is inclined along the spiral groove away from the tip 101. The barb 102 can hinder the reverse rotation of the anchor 100, thereby preventing the anchor 100 from loosening due to creeping of the tissue to be sutured.

[0082] like Figure 2 , Figure 3 and Figure 4 As shown, the anchor 100 also includes a joint 120, which is connected to the anchor head tube 110; the joint 500 includes a second connector 502 arranged on the joint 120, and the second connector 502 is adapted to the transmission pipe 200; the joint 120 is provided with an axial through hole 121, and the traction line 300 passes through the axial through hole 121, and the distal end of the traction line 300 is provided with a protrusion 301, and the protrusion 301 abuts against the distal end of the joint 120.

[0083] Among them, the distal end of the traction line 300 can be bonded to the protrusion 301, and the protrusion 301 can also be formed at the distal end of the traction line 300 by knotting. The aperture of the axial through hole 121 is smaller than the diameter of the protrusion 301, and the joint 120 is welded or bonded to the anchor head tube 110. When the traction line 300 is pulled toward the proximal end, the protrusion 301 pushes against the joint 120 toward the proximal end, and the second connector 502 remains engaged with the first connector 501.

[0084] like Figure 1 , Figure 2 and Figure 5 As shown, in the case of the default joint 120, the proximal end of the anchor head tube 110 can be provided with a second plug-in portion 502 adapted to the transmission pipe 200, the second plug-in portion 502 is configured as a protrusion or a groove, a plurality of second plug-in portions 502 are used, and the plurality of second plug-in portions 502 are arranged at intervals along the circumference of the anchor head tube 110. The second plug-in portion 502 is matched with the transmission pipe 200, so that the transmission pipe 200 can drive the anchor head tube 110 to rotate.

[0085] like Figure 6 and Fig.13 As shown, the anchor 100 includes: an anchor base 130 and a spiral 140; the proximal end of the anchor base 130 is connected to the transmission tube 200, and the distal end of the anchor base 130 is provided with a tip 101; the spiral 140 is connected to the anchor base 130 and extends along the circumference of the anchor base 130. The transmission tube 200 is sleeved and connected to the proximal end of the anchor base 130, and the tip 101 can penetrate into the tissue to be sutured. By rotating the anchor 100, the spiral 140 can gradually drill into the inside of the tissue to be sutured, and the spiral 140 can prevent the anchor 100 from escaping from the inside of the tissue to be sutured along the axial direction.

[0086] like Figure 7 and Fig.13 As shown, the spiral member 140 is provided with a plurality of stop notches 103, which are arranged at intervals along the spiral direction of the spiral member 140. When the anchor 100 is screwed into the tissue to be sutured, the tissue rebounds into the stop notches 103, thereby preventing the anchor 100 from rotating in the opposite direction, thereby preventing the anchor 100 from loosening from the tissue to be sutured.

[0087] like Figure 1 , Fig. 9 , Fig.10 and Fig.13 As shown, the suturing device provided by the embodiment of the present invention includes: a locking and cutting mechanism and the single anchor mechanism described in the above embodiment; the traction line 300 passes through the locking and cutting mechanism, and the locking and cutting mechanism is used to lock the traction line 300 and cut off the excess traction line 300.

[0088] In the embodiment of the present invention, the clamping structure of the locking and cutting mechanism clamps and fixes the traction line 300, thereby locking the traction line 300, and cutting off the excess traction line 300 by shearing. The use of the above-mentioned single anchor mechanism facilitates the assembly of the single anchor mechanism and facilitates the anchoring operation of the traction line 300. The suturing device has the technical effect of the above-mentioned single anchor mechanism, which will not be repeated here. In addition, the suturing device may also include a take-up mechanism, which is connected to the traction line 300, and the take-up mechanism is used to pull and tighten the traction line 300. The take-up mechanism uses a take-up wheel to rotate to wind the traction line 300 around the take-up wheel, thereby tightening the traction line 300.

[0089] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of the present invention, rather than to limit it. Although the present invention has been described in detail with reference to the aforementioned embodiments, those skilled in the art should understand that they can still modify the technical solutions described in the aforementioned embodiments, or replace some or all of the technical features therein with equivalents. However, these modifications or replacements do not cause the essence of the corresponding technical solutions to deviate from the scope of the technical solutions of the embodiments of the present invention.

Claims

1. A single anchor mechanism, characterized in that: include: An anchor member (100), a transmission pipe member (200), a traction line (300) and a stop member (400); One end of the traction line (300) is connected to the anchor (100), and the traction line (300) passes through the transmission pipe (200); The ends of the anchor member (100) and the transmission pipe member (200) opposite to each other are provided with matching joint portions (500); The limiting member (400) is connected to the pulling line (300), and the limiting member (400) abuts against the end of the transmission pipe (200) away from the anchor (100).

2. The single anchor mechanism according to claim 1, characterized in that: The limiting member (400) comprises a polymer elastic member, and the polymer elastic member has a clamping portion; The pulling wire (300) is interference-fitted with the wire clamping portion; The polymer elastic member abuts against the end of the transmission pipe (200) away from the anchor (100).

3. The single anchor mechanism according to claim 1, characterized in that: The transmission pipe (200) comprises a spring tube (210) and a joint (220), wherein the joint (220) is connected to the spring tube (210).

4. The single anchor mechanism according to claim 3, characterized in that: The joint portion (500) comprises a first plug-in portion (501) arranged on the joint member (220), and the first plug-in portion (501) is adapted to the proximal end of the anchor member (100).

5. The single anchor mechanism according to claim 1, characterized in that: The single anchor mechanism further comprises: a handle (700) and a rotating wheel (800); The transmission pipe (200) is passed through the handle (700), and the transmission pipe (200) is connected to the rotating wheel (800), and the rotating wheel (800) is coaxial with the transmission pipe (200).

6. The single anchor mechanism according to claim 5, characterized in that: The handle (700) is provided with a stop-retraction limiting member (710), and the stop-retraction limiting member (710) abuts against the circumferential surface of the rotating wheel (800).

7. The single anchor mechanism according to claim 6, characterized in that: The circumferential surface of the rotating wheel (800) is provided with a clamping portion (801) adapted to the stop and limit member (710); A plurality of the fixing portions (801) are arranged at intervals along the circumference of the rotating wheel (800); Alternatively, a plurality of the fixing portions (801) are arranged at intervals along the axial direction of the rotating wheel (800).

8. The single anchor mechanism according to claim 5, characterized in that: An outer tube (900) is installed at the distal end of the handle (700), and the anchor (100) and the transmission tube (200) are both inserted into the outer tube (900).

9. The single anchor mechanism according to claim 8, characterized in that: The handle (700) is provided with a hollow limiting groove (701), and the hollow limiting groove (701) extends along the axial direction of the outer tube (900); The rotating wheel (800) is located inside the hollow limiting groove (701), the rotating wheel (800) moves along the hollow limiting groove (701), and has a forward stop point position and a backward stop point position; At the forward movement stop position, the rotating wheel (800) moves to the far end of the hollow limiting groove (701), and the anchor (100) extends outwardly to the outside of the outer tube (900); At the retraction stop position, the rotating wheel (800) moves to the proximal end of the hollow limiting groove (701), and the anchor (100) shrinks into the interior of the outer tube (900).

10. The single anchor mechanism according to claim 8, characterized in that: The distal end surface of the outer tube (900) is provided with a tooth portion (901).

11. The single anchor mechanism according to claim 1, characterized in that: The anchor (100) comprises an anchor head tube (110), and the traction line (300) is connected to the anchor head tube (110); The circumferential surface of the anchor head tube (110) is provided with a spiral groove, and a spiral thorn (111) is formed along the circumference of the anchor head tube (110), and a tip (101) is provided at the distal end of the spiral thorn (111).

12. The single anchor mechanism according to claim 11, characterized in that: The spiral thorn (111) has a barb (102) which faces the spiral groove and is inclined away from the tip (101) along the spiral groove.

13. The single anchor mechanism according to claim 11, characterized in that: The anchor (100) further comprises a joint (120), wherein the joint (120) is connected to the anchor head pipe (110); The joint portion (500) comprises a second connector (502) arranged on the joint (120), and the second connector (502) is adapted to the transmission pipe (200); The connector (120) is provided with an axial through hole (121), the traction line (300) passes through the axial through hole (121), and the distal end of the traction line (300) is provided with a convex head (301), and the convex head (301) abuts against the distal end of the connector (120).

14. The single anchor mechanism according to claim 11 or 12, characterized in that: The proximal end of the anchor head tube (110) is provided with a second connector (502) adapted to the transmission pipe (200).

15. The single anchor mechanism according to claim 1, characterized in that: The anchor (100) comprises: an anchor head base (130) and a spiral member (140); The proximal end of the anchor head base (130) is connected to the transmission pipe (200), and the distal end of the anchor head base (130) is provided with a tip (101); The spiral member (140) is connected to the anchor head base (130) and extends along the circumference of the anchor head base (130).

16. The single anchor mechanism according to claim 15, characterized in that: The spiral component (140) is provided with a plurality of stop-retreat notches (103), and the plurality of stop-retreat notches (103) are arranged at intervals along the spiral direction of the spiral component (140).

17. A suturing device, characterized in that: include: A locking and cutting mechanism and a single anchor mechanism as described in any one of claims 1 to 16; The traction line (300) passes through the locking and cutting mechanism, and the locking and cutting mechanism is used to lock the traction line (300) and cut off the excess traction line (300).

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