Thread-driven treatment device

Abstract

The invention discloses a thread-driven treatment device. The thread-driven treatment device comprises an outer tube, a nail bin, at least one suturing nail, a suture and a rotating piece. The screw body and the rotating part form a structure similar to a lead screw, the rotating part is equivalent to a screw rod, the screw body is equivalent to a nut, the screw body and the rotating part move stably and reliably in the screw bin through interaction of internal threads and external threads, especially the self-locking characteristic of the threads, and the situation that the screw is pushed off under the inertia effect of force, and consequently the device fails is avoided. In the spiral transmission process, force and movement can be stably transmitted, and the spiral nail can be accurately driven to move and release in the axial direction; the rotating transmission structure for driving the suturing nail only comprises the nail body (suturing nail) and the rotating piece, the structure is simple and compact, the occupied space is small, and the characteristic that the outer diameter of a soft endoscopic instrument is small is met.

Description

Technical Field

[0001] The present application relates to the technical field of medical devices, and in particular to a thread-driven treatment device. Background Art

[0002] With the advancement of flexible endoscopic minimally invasive surgery, suturing devices have become crucial tools in minimally invasive surgery. Flexible endoscopic suturing devices primarily include endoscopic clips, nylon cord / thread devices, and spiral staple devices, depending on their effectiveness. Each has its own advantages and optimal indications. Spiral staple devices are particularly suitable for resolving difficult wounds. For example, the spiral staples can be easily drilled / threaded into brittle mucosal tissue and anchored there, achieving a suture effect. Currently, several existing technologies for these flexible endoscopic spiral staple devices present challenges in widespread adoption. These technologies are primarily developed abroad, presenting technical barriers and prohibitive medical costs, hindering widespread adoption and limiting the reach of patients. Furthermore, some existing technologies suffer from implementation challenges and poor reliability. Multi-shot spiral staple devices, in particular, are prone to dislodging the staples due to inertia, leading to device failure. Furthermore, effectively driving the spiral staples is challenging. In addition, the outer diameter of the instruments passing through the endoscope channel under the flexible endoscope is very small. The general inner diameter of the endoscope channel is 3.2 mm. Therefore, how to make the structure occupy smaller space is also a problem that needs to be solved. Summary of the Invention

[0003] An embodiment of the present application provides a thread-driven treatment device, which includes: an outer tube; a nail magazine, one end of which is connected to the outer tube, the nail magazine having a accommodating space, and a first limiting structure being provided in the accommodating space; at least one suture nail, which is arranged in the accommodating space, the suture nail including a nail body and a puncture part, the nail body being provided with a second limiting structure, the nail body being provided with a through hole passing therethrough, and the hole wall of the through hole being internally threaded; a suture, the suture being connected to the suture nail; and a rotating member, one end of the rotating member being inserted into the through hole through the outer tube, and an external thread matching the internal thread being provided on the outer surface of one end of the rotating member, the first limiting structure matching the second limiting structure to enable the nail body to move in the nail magazine.

[0004] In some embodiments, a first position limiting rotation portion is provided on the nail body; the puncture portion is a suture nail; the thread-driven treatment device also includes: a second position limiting rotation portion, which is used to cooperate with the first position limiting rotation portion to enable the nail body to rotate relative to the nail magazine.

[0005] In some embodiments, the first position limiting rotation portion is arranged on the wall of the through hole; the second position limiting rotation portion is arranged at one end of the rotating member, and the second position limiting rotation portion is an elastic member; wherein, after the internal thread and the external thread are separated, the elastic member interferes with the first position limiting rotation portion along the rotation direction of the rotating member.

[0006] In some embodiments, the elastic member includes a first piece and a second piece, one end of the first piece is connected to one end of the second piece, the first piece and the second piece extend along the axial direction of the outer tube, and the distance between the first piece and the second piece gradually increases.

[0007] In some embodiments, the first piece and the second piece are an integral structure; and the connecting ends of the first piece and the second piece are connected to the rotating member.

[0008] In some embodiments, a snap-fit ​​groove is provided at one end of the rotating member, and the connecting end is inserted into the snap-fit ​​groove to connect with the rotating member.

[0009] In some embodiments, a clamping tube is provided at one end of the rotating member, and the connecting end is provided inside the clamping tube and connected to the rotating member.

[0010] In some embodiments, a limiting surface extending radially along the outer tube is provided on the other end of the staple cartridge, and the limiting surface can interfere with the suture staple.

[0011] In some embodiments, after the internal thread is separated from the external thread, the second limiting structure can interfere with the limiting surface.

[0012] In some embodiments, a rotation space is provided at the other end of the nail magazine. After the internal thread is separated from the external thread, the nail body enters the rotation space and is able to rotate in the rotation space.

[0013] In some embodiments, a finite surface is formed between the accommodating space and the rotating space.

[0014] In some embodiments, the first position limiting rotation portion is disposed on the outer surface of the nail body; the second position limiting rotation portion is disposed on the space wall of the accommodating space and is located at the other end of the nail magazine, and the second position limiting rotation portion extends spirally along the axial direction of the outer tube; wherein the first position limiting rotation portion cooperates with the second position limiting rotation portion to enable the nail body to rotate relative to the nail magazine.

[0015] In some embodiments, the puncture portion is a linear puncture needle, and the puncture needle is provided with barbs.

[0016] In some embodiments, one of the first limiting structure and the second limiting structure is a groove, and the other is a protrusion, and the protrusion is inserted into the groove.

[0017] In some embodiments, in the radial direction of the through hole, the cross-sectional shape of the accommodating space is non-circular; in the radial direction of the through hole, the cross-sectional shape of the nail body is adapted to the cross-sectional shape of the accommodating space; the first limiting structure is the accommodating space with a non-circular cross-sectional shape, and the second limiting structure is the nail body with a non-circular cross-sectional shape.

[0018] In some embodiments, the rotating member includes a driving section, a connecting section and a transition section connected in sequence, and the connecting section is provided with the external thread; after the internal thread is separated from the external thread, the nail body is located in the transition section.

[0019] In some embodiments, when a clamping tube is provided on the rotating member, the transition section and the clamping tube are the same component.

[0020] In some embodiments, the rotating member includes a driving section and a connecting section connected in sequence, and the connecting section is provided with the external thread; after the internal thread is separated from the external thread, the nail body is separated from the connecting section.

[0021] In some embodiments, the rotating member includes a first part and a second part that are detachably connected, the first part is arranged in the outer tube, the second part is arranged in the nail magazine, and the second part is provided with the external thread; the outer tube and the nail magazine are detachably connected; the nail magazine, the suture nail and the second part constitute a suturing assembly.

[0022] In some embodiments, a rotating part is provided in the outer tube, and the rotating part includes an inner ring and an outer ring rotatably connected to the inner ring, the outer ring is fixedly connected to the outer tube, the first part is fixedly connected to the inner ring, one end of the second part is inserted into the connecting hole of the inner ring and is limited in rotation with the inner ring, and the second part is detachably connected to the inner ring.

[0023] In some embodiments, in the radial direction of the through hole, the cross-sectional shape of the connecting hole is non-circular; in the radial direction of the through hole, the cross-sectional shape of one end of the second portion is adapted to the cross-sectional shape of the connecting hole.

[0024] In some embodiments, a card slot is provided on one of the nail magazine and the outer tube, and a card block is provided on the other, and the outer tube and the nail magazine are detachably connected through the cooperation of the card slot and the card block.

[0025] In some embodiments, the nail magazine is socketed with the end of the outer tube; a first annular limiting portion is provided on the nail magazine, and a second annular limiting portion is provided on the outer tube, the first annular limiting portion and the second annular limiting portion are located between the nail magazine and the outer tube, and the first annular limiting portion and the second annular limiting portion are clamped together.

[0026] In some embodiments, the thread-driven treatment device further includes: an elastic ring, which is located between the nail magazine and the outer tube and is clamped with the first annular limiting portion and the second annular limiting portion.

[0027] In some embodiments, the thread-driven treatment device further comprises a "C"-shaped ring, which is located between the nail magazine and the outer tube and is engaged with the first annular limiting portion and the second annular limiting portion.

[0028] In some embodiments, the nail cartridge is sleeved with the end of the outer tube;

[0029] One of the nail magazine and the outer tube is provided with an elastic buckle, and the other is provided with a clamping hole. The outer tube and the nail magazine are detachably connected through the cooperation of the elastic buckle and the clamping hole.

[0030] In some embodiments, the nail magazine is provided with a notch extending along the axial direction of the outer tube to the end surface of the other end of the nail magazine; the suture nail also includes a connecting ring, which is sleeved on the nail body and can rotate relative to the nail body, and part of the connecting ring is located in the notch.

[0031] In some embodiments, the nail body includes a base and a limiting ring, one end of the base is connected to the puncture part, the limiting ring is sleeved on the other end of the base and forms an installation groove with the base, and the connecting ring is sleeved in the installation groove.

[0032] Compared with the existing technology, the above technical solution has the following advantages:

[0033] The nail body and the rotating part form a "lead screw" structure, the rotating part is equivalent to the "screw", and the nail body is equivalent to the "nut". The interaction between the internal and external threads of the nail body and the rotating part, especially the self-locking characteristics of the threads, makes the spiral nail move stably and reliably in the nail magazine, and the spiral nail will not be pushed off under the action of inertia and the device will not fail; in the spiral transmission, it can stably transmit force and motion, and accurately drive the axial movement and release of the spiral nail; the rotary transmission structure for driving the suture nail includes only two components: the nail body (suture nail) and the rotating part. The structure is simple and compact, and takes up little space, which is in line with the characteristics of the small outer diameter of the flexible endoscopic instrument. BRIEF DESCRIPTION OF THE DRAWINGS

[0034] In order to more clearly illustrate the technical solutions in the embodiments of the present application, the following briefly introduces the drawings required for use in the embodiments or descriptions of the prior art. Obviously, the drawings described below are only some embodiments of the present application. For ordinary technicians in this field, other drawings can be obtained based on these drawings without any creative work.

[0035] Figure 1 A schematic structural diagram of a first embodiment of a thread-driven treatment device provided in some embodiments of the present application;

[0036] Figure 2 for Figure 1 A schematic diagram of the exploded structure of the thread-driven therapeutic device shown;

[0037] Figure 3 A schematic structural diagram of a second embodiment of a thread-driven treatment device provided in some embodiments of the present application;

[0038] Figure 4 for Figure 3 A schematic diagram of the exploded structure of the thread-driven therapeutic device shown;

[0039] Figure 5 for Figure 4 Schematic diagram of the cross-sectional structure of the nail cartridge and the outer tube shown in FIG;

[0040] Figure 6 for Figure 4 A schematic diagram of the structure of the suture staple shown in FIG;

[0041] Figure 7 for Figure 6 A schematic diagram of a partial cross-sectional structure of the suture staple shown;

[0042] Figure 8 for Figure 4 A schematic cross-sectional view of the first embodiment of the rotating member shown in FIG.

[0043] Figure 9 for Figure 4 A schematic cross-sectional view of a second embodiment of a rotating member shown in FIG;

[0044] Figure 10 for Figure 3 A schematic diagram of a partial cross-sectional structure of the thread-driven treatment device shown;

[0045] Figure 11 for Figure 3 A schematic diagram of a partial cross-sectional structure of the thread-driven treatment device from another perspective;

[0046] Figure 12 for Figure 11 A schematic diagram of the enlarged structure of the middle part A;

[0047] Figure 13 for Figure 3 The structural schematic diagram of the thread-driven treatment device shown is in another state;

[0048] Figure 14 for Figure 13 A schematic diagram of a partial cross-sectional structure of the thread-driven treatment device shown;

[0049] Figure 15 for Figure 14 A schematic diagram of the enlarged structure of the middle part B;

[0050] Figure 16 for Figure 3 The structural diagram of the thread-driven treatment device shown is in another state;

[0051] Figure 17 for Figure 16 A schematic diagram of a partial cross-sectional structure of the thread-driven treatment device shown;

[0052] Figure 18 for Figure 17 Schematic diagram of the enlarged structure of the middle C part;

[0053] Figure 19 A schematic diagram of a partial cross-sectional structure of a suture staple and a staple cartridge provided in some embodiments of the present application;

[0054] Figure 20 A schematic structural diagram of a third embodiment of a thread-driven treatment device provided in some embodiments of the present application;

[0055] Figure 21 for Figure 20 Schematic diagram of the cross-sectional structure of the nail cartridge and the outer tube shown in FIG;

[0056] Figure 22 for Figure 20 A schematic diagram of the exploded structure of the thread-driven therapeutic device shown;

[0057] Figure 23 for Figure 22 Schematic diagram of the exploded structure of the suture staple shown in ;

[0058] Figure 24 for Figure 22 A schematic diagram of the local anatomical structure of the suture staple is shown;

[0059] Figure 25 A schematic structural diagram of a fourth embodiment of a thread-driven treatment device provided in some embodiments of the present application;

[0060] Figure 26 for Figure 25 A schematic diagram of the exploded structure of an embodiment of a thread-driven therapeutic device is shown;

[0061] Figure 27 for Figure 25 A schematic diagram of a partial cross-sectional structure of the thread-driven treatment device shown;

[0062] Figure 28 for Figure 27 The enlarged structural diagram of the middle D part;

[0063] Figure 29 for Figure 25 A schematic diagram of a partially exploded structure of another embodiment of a thread-driven therapeutic device is shown;

[0064] Figure 30 for Figure 25 A partial cross-sectional structural diagram of another embodiment of the thread-driven treatment device shown;

[0065] Figure 31 for Figure 30 The enlarged structural diagram of the middle E part;

[0066] Figure 32 for Figure 29 A schematic cross-sectional structural diagram of a nail magazine is shown in FIG;

[0067] Figure 33 for Figure 29 A schematic diagram of the local structure of the structure shown in ;

[0068] Figure 34 for Figure 25 A schematic diagram of a partially exploded structure of another embodiment of a thread-driven therapeutic device is shown;

[0069] Figure 35 A schematic structural diagram of a fifth embodiment of a thread-driven treatment device provided in some embodiments of the present application;

[0070] Figure 36 for Figure 35 A schematic diagram of the structure of the nail magazine shown in FIG;

[0071] Figure 37 for Figure 35 Schematic diagram of the structure of the first part cooperating with the outer tube.

[0072] The reference numerals are as follows:

[0073] 10. Outer tube; 11. Clamping block; 12. Second annular limiting portion;

[0074] 20. Nail magazine; 21. Accommodating space; 22. First limiting structure; 23. Limiting surface; 24. Rotational space; 25. Slot; 26. First annular limiting portion; 27. Notch;

[0075] 30. Suture staple; 31. Staple body; 311. Through hole; 312. Internal thread; 313. Base; 314. Limiting ring; 32. Puncture portion; 33. Second limiting structure; 34. First limiting rotation portion; 35. Connecting ring; 40. Suture;

[0076] 50. Rotating member; 51. External thread; 52. Second position-limiting rotating portion; 521. First piece; 522. Second piece; 53. Snap-fit ​​groove; 54. Snap-fit ​​tube; 55. Driving section; 56. Connecting section; 57. Transition section; 58. First section; 59. Second section;

[0077] 60. Rotating part; 61. Inner ring; 62. Outer ring; 70. Elastic ring; 80. "C"-shaped ring. DETAILED DESCRIPTION

[0078] The present application will be further described in detail below through the accompanying drawings and examples, through which the features and advantages of the present application will become more clear and distinct.

[0079] Unless otherwise defined, all technical and scientific terms used in this application have the same meanings as commonly understood by technicians in the technical field to which this application belongs; the terms used in this application are only for the purpose of describing specific embodiments and are not intended to limit this application; the terms "including" and "having" in the specification of this application and the above-mentioned drawings and any variations thereof are intended to cover non-exclusive inclusions.

[0080] The phrase "embodiment" mentioned in this application means that a particular feature, structure, or characteristic described in conjunction with the embodiment may be included in at least one embodiment of the application. The appearance of this phrase in various places in the specification does not necessarily refer to the same embodiment, nor does it refer to independent or alternative embodiments that are mutually exclusive with other embodiments. It is understood, both explicitly and implicitly, by those skilled in the art that the embodiments described in this application may be combined with other embodiments.

[0081] The term "exemplary" is used herein to mean "serving as an example, embodiment, or illustration." Any embodiment described as "exemplary" is not necessarily to be construed as preferred or advantageous over other embodiments. Although various aspects of the embodiments are shown in the drawings, the drawings are not necessarily drawn to scale unless otherwise indicated.

[0082] In the description of this application, technical terms such as "first" and "second" are only used to distinguish different objects and cannot be understood as indicating or implying relative importance or implicitly indicating the quantity, specific order or primary and secondary relationship of the indicated technical features.

[0083] In the description of this application, unless otherwise specified or limited, technical terms such as "mounted," "connected," "connect," and "fixed" should be understood broadly. For example, these terms may refer to fixed connections, removable connections, or integration; mechanical connections or electrical connections; direct connections or indirect connections through an intermediary; and internal connections between two components or interactions between two components. Those skilled in the art will understand the specific meanings of these terms in this application based on the specific circumstances.

[0084] In the description of the present application, “a plurality of” means two or more (including two), unless otherwise clearly and specifically defined.

[0085] In the description of this application, the same reference numerals represent the same components, and for the sake of brevity, detailed descriptions of the same components in different embodiments are omitted. It should be understood that the thickness, length, and other dimensions of the various components in the embodiments of this application, as well as the overall thickness, length, and other dimensions of the integrated device shown in the drawings are merely illustrative and do not constitute any limitation on this application.

[0086] The technical solutions of the embodiments of the present application are described in detail below with reference to the accompanying drawings. The technical features involved in the different implementation modes of the present application described below can be combined with each other as long as there is no conflict between them.

[0087] like Figures 1 to 37 As shown, the thread-driven treatment device provided by the present application includes: an outer tube 10 , a staple cartridge 20 , at least one suture staple 30 , a suture 40 and a rotating member 50 .

[0088] One end of the nail magazine 20 is connected to the outer tube 10 . The nail magazine 20 has an accommodating space 21 . A first limiting structure 22 is provided in the accommodating space 21 .

[0089] The suture staple 30 is disposed in the accommodating space 21 . The suture staple 30 includes a staple body 31 and a puncture portion 32 . The staple body 31 is provided with a second limiting structure 33 . The staple body 31 is provided with a through hole 311 passing therethrough. An internal thread 312 is formed on the wall of the through hole 311 .

[0090] The suture 40 is connected to the suture staple 30 .

[0091] One end of the rotating member 50 passes through the outer tube 10 and is inserted into the through hole 311, and an external thread 51 that cooperates with the internal thread 312 is provided on the outer surface of one end of the rotating member 50, and the first limiting structure 22 cooperates with the second limiting structure 33 to enable the nail body 31 to move in the nail magazine 20.

[0092] The thread-driven treatment device provided herein comprises a staple body 31 and a rotating member 50, each of which is similar to a "lead screw" structure. The rotating member 50 is equivalent to a "screw" and the staple body 31 is equivalent to a "nut." The mechanical transmission link between the staple body 31 and the rotating member 50 is short, and the thread engagement has good repeatability, ensuring the position consistency of the suture staple 30 during multiple consecutive movements. Furthermore, the pitch accuracy of the thread directly determines the minimum unit of linear displacement, enabling precise control of the advancement distance of the suture staple 30, avoiding excessive tissue damage or excessive shallowness resulting in a weak suture. The thread engagement generates continuous radial pressure, creating a mechanical self-locking effect, allowing the suture staple 30 to remain stably fixed to human tissue even without continuous power. Furthermore, when the suture staple 30 is started, stopped, or fine-tuned, there is no inertial movement, no shaking, and no setbacks. This prevents the suture staple 30 from accidentally being dislodged from the staple cartridge 20 and any additional pulling or impact on the tissue, making the device particularly suitable for delicate operations during minimally invasive surgery. The threaded connection between the staple body 31 and the rotating member 50 has a high transmission efficiency, ensuring that the suture staple 30 obtains a stable driving force when contacting the tissue, avoiding jamming or incomplete suturing due to insufficient power, and ensuring smooth and reliable movement of the suture staple 30. In addition, the rotary transmission structure that drives the suture staple 30 only includes two components: the staple body 31 (suture staple 30) and the rotating member 50. The transmission chain is extremely simple, with no intermediate redundant components and a small space occupied, resulting in a small product size and the ability to flexibly operate in narrow cavities (such as the esophagus and gastrointestinal tract). The connection structure between the staple body 31 and the rotating member 50 is simple, requiring no complex assembly techniques, making it easy to maintain and replace parts.

[0093] like Figures 1 to 37 As shown, in one embodiment of the present application, the nail magazine 20 is provided with a notch 27 extending along the axial direction of the outer tube 10 to the end surface of the other end of the nail magazine 20.

[0094] The suture staple 30 further includes a connecting ring 35 , which is sleeved on the staple body 31 and rotatable relative to the staple body 31 . Part of the connecting ring 35 is located in the notch 27 .

[0095] When the suture staple 30 rotates relative to the staple magazine 20, due to the protruding notch 27 of the connecting ring 35, the staple magazine 20 limits the rotation of the connecting ring 35 relative to the staple magazine 20, and the connecting ring 35 does not rotate with the suture staple 30, so that the suture 40 does not rotate with the suture staple 30. Therefore, during the process of rotation and anchoring of the suture staple 30, the suture 40 will not be entangled, knotted and locked on the suture staple 30, avoiding the situation where the suture staple 30 cannot slide on the suture 40, that is, it is ensured that multiple suture staples 30 can be smoothly tightened through the suture 40 to achieve effective suturing of human tissue.

[0096] like Figures 22 to 24As shown, in one embodiment of the present application, the nail body 31 includes a base 313 and a limiting ring 314. One end of the base 313 is connected to the puncture part 32. The limiting ring 314 is sleeved on the other end of the base 313 and forms an installation groove with the base 313. The connecting ring 35 is sleeved in the installation groove.

[0097] During the assembly process of the suture staple 30, the connecting ring 35 is first placed on the step of the base 313, and then the retaining ring 314 is fixed to the base 313 by welding or screwing. A mounting groove is formed between the retaining ring 314 and the base 313, and the retaining ring 314 can rotate within the mounting groove. The above structure facilitates the assembly of the suture staple 30, thereby improving the assembly efficiency of the suture staple 30.

[0098] like Figures 3 to 37 As shown, in one embodiment of the present application, one of the first limiting structure 22 and the second limiting structure 33 is a groove, and the other is a protrusion, and the protrusion is inserted into the groove.

[0099] The protrusions can be directly integrally formed on the surface of the suture staple 30 (e.g., by stamping or grinding), and the grooves can be directly opened on the inner wall of the staple cartridge 20 (e.g., by laser cutting or milling). There is no need to add additional guide members (e.g., guide rails, sliders) or elastic components (e.g., spring clips), which greatly simplifies the structure and saves space inside the staple cartridge 20.

[0100] In one embodiment of the present application, in the radial direction of the through hole, the cross-sectional shape of the accommodating space is non-circular.

[0101] In the radial direction of the through hole, the cross-sectional shape of the nail body is adapted to the cross-sectional shape of the accommodating space.

[0102] The first limiting structure is an accommodating space with a non-circular cross-sectional shape, and the second limiting structure is a nail body with a non-circular cross-sectional shape.

[0103] The non-circular cross-section can be directly limited by the contour of the nail body itself (such as a stamped rectangular nail body) and the shape of the nail magazine accommodating space. There is no need to additionally process protrusions, grooves and other additional structures on the nail body or nail magazine, which completely simplifies the part design and saves valuable space inside the nail magazine.

[0104] Several embodiments of the thread-driven therapeutic device are described in detail below with reference to the accompanying drawings:

[0105] Example 1

[0106] like Figure 1 and Figure 2 As shown, the thread-driven treatment device provided by the present application includes: an outer tube 10 , a staple cartridge 20 , at least one suture staple 30 , a suture 40 and a rotating member 50 .

[0107] One end of the nail magazine 20 is connected to the outer tube 10 . The nail magazine 20 has an accommodating space 21 . A first limiting structure 22 is provided in the accommodating space 21 .

[0108] The suture staple 30 is disposed in the accommodating space 21 . The suture staple 30 includes a staple body 31 and a puncture portion 32 . The staple body 31 is provided with a second limiting structure 33 . The staple body 31 is provided with a through hole 311 passing therethrough. An internal thread 312 is formed on the wall of the through hole 311 .

[0109] The suture 40 is connected to the suture staple 30 .

[0110] One end of the rotating member 50 passes through the outer tube 10 and is inserted into the through hole 311, and an external thread 51 that cooperates with the internal thread 312 is provided on the outer surface of one end of the rotating member 50. The first limiting structure 22 cooperates with the second limiting structure 33 to enable the nail body 31 to move axially along the outer tube 10.

[0111] The puncture portion 32 is a linear puncture needle provided with barbs.

[0112] Through the cooperation of the internal thread 312, the external thread 51, the first limiting structure 22 and the second limiting structure 33, the continuous rotation of the rotating member 50 is converted into the axial movement of the suture staple 30 along the staple cartridge 20. The insertion force of the suture staple 30 is transmitted through the entire thread tooth surface, and the insertion speed can be precisely controlled by the rotation rate. This "shock-free, low-fluctuation" force transmission characteristic allows the puncture needle to accurately and reliably penetrate the tissue when the suture staple 30 enters the tissue, rather than being forcibly torn and causing excessive damage to the mucosal tissue.

[0113] Example 2

[0114] like Figures 3 to 19 As shown, the structure of the second embodiment is substantially the same as that of the first embodiment, with the main difference being that a first position-limiting rotation portion 34 is provided on the nail body 31 . The puncture portion 32 is a suture nail 30 .

[0115] The thread-driven treatment device further includes a second position-limiting rotation portion 52 , which is configured to cooperate with the first position-limiting rotation portion 34 to enable the nail body 31 to rotate relative to the nail magazine 20 .

[0116] The first rotation limiting portion 34 is disposed on the wall of the through hole 311 .

[0117] The second position-limiting rotation portion 52 is provided at one end of the rotating member 50 , and the second position-limiting rotation portion 52 is an elastic member.

[0118] After the internal thread 312 is separated from the external thread 51 , the elastic member interferes with the first position-limiting rotation portion 34 along the rotation direction of the rotating member 50 .

[0119] like Figures 10 to 18As shown, the rotating member 50 rotates to drive the axial movement of the staple 30, thereby gradually pushing the staple 30 out of the staple cartridge 20. When the internal thread 312 separates from the external thread 51, the puncture portion 32 is pushed out of the staple cartridge 20, and the elastic member of the rotating member 50 is located within the through-hole 311 and interferes with the first position-limiting rotating portion 34. Simultaneously, the staple 30 loses its radial restraint, allowing the staple body 31 to rotate relative to the staple cartridge 20. Therefore, when the elastic member is restrained by the first position-limiting rotating portion 34 (which can be a position-limiting protrusion or a position-limiting groove, etc.), the staple body 31 is driven to rotate relative to the staple cartridge 20, causing the spiral needle to rotate and enter human tissue. To separate the staple 30 from the thread-driven treatment device, simply remove the elastic member from the through-hole 311. The rotating member 50 is at least partially a flexible shaft and can be driven by an external motor, greatly improving the efficiency of the device.

[0120] The suture staple 30 is gradually "screwed into" the human tissue, avoiding the violent squeezing of the tissue by instantaneous pressure and reducing the occurrence of operational risks. At the same time, the suture staple 30 forms a "mechanical bite" with the human tissue, which makes the anchoring area of ​​the suture staple 30 and the tissue larger, and can effectively prevent the suture staple 30 from loosening, falling off or tissue slipping. Elastic parts (such as micro springs, elastic sheets) can be designed as light and thin structures without taking up too much space, especially suitable for the "slenderization" requirements of minimally invasive surgical instruments. There may be slight deviations in the size and position of the first limiting rotation part 34 (protrusion / groove), and the elastic deformation of the elastic part can actively adapt to these errors (through its own preload or deformation) to ensure that the elastic part and the limiting part are always tightly engaged to avoid "slipping and idling" caused by gaps.

[0121] like Figure 8 and Figure 9 As shown, in one embodiment of the present application, the elastic member includes a first piece 521 and a second piece 522, one end of the first piece 521 is connected to one end of the second piece 522, the first piece 521 and the second piece 522 extend along the axial direction of the outer tube 10, and the distance between the first piece 521 and the second piece 522 gradually increases.

[0122] The "gradually increasing" spacing between the first and second pieces 521, 522 means that the first and second pieces 521, 522 naturally open in a "gradually opening" manner. As the elastic member enters the through-hole 311, the walls of the through-hole 311 reduce the distance between the first and second pieces 521, 522, generating an inward elastic preload. When the elastic member engages the first position-limiting rotating portion 34, the preload forces the first and second pieces 521, 522 into close contact with the first position-limiting rotating portion 34, forming a "clamping" position limit, ensuring gapless and slip-free torque transmission during rotation.

[0123] like Figure 8 and Figure 9As shown, in one embodiment of the present application, the first piece 521 and the second piece 522 are an integral structure.

[0124] The connecting ends of the first piece 521 and the second piece 522 are connected to the rotating member 50 .

[0125] The elastic member is relatively small and requires connection to the rotating member 50, which often limits assembly space. The one-piece elastic member is compact (without the redundant dimensions of the connecting parts), making it easier to position and install in tight spaces during assembly. There's no need to reserve extra space for "jointing" the two pieces, reducing the risk of spatial interference during assembly.

[0126] like Figure 8 As shown, in one embodiment of the present application, a snap-fit ​​groove 53 is provided at one end of the rotating member 50, and the connecting end is inserted into the snap-fit ​​groove 53 to connect with the rotating member 50. The plug-in connection between the connecting end and the snap-fit ​​groove 53 does not require additional fasteners or auxiliary processes (such as welding or gluing), which facilitates assembly.

[0127] like Figure 9 As shown, in one embodiment of the present application, a clamping tube 54 is provided at one end of the rotating member 50 , and the connecting end is provided inside the clamping tube 54 and connected to the rotating member 50 .

[0128] The clamping tube 54 is a hollow tubular structure, its inner wall forming a natural "guide channel." Due to the small size of the elastic element and the precise dimensions of the connector, the clamping tube 54 guides the connector for precise axial insertion during assembly, avoiding assembly delays caused by manual alignment errors. This "tubular guide" reduces the need for operators to repeatedly adjust the connector's positioning, especially in mass production.

[0129] like Figures 10 to 18 As shown, in one embodiment of the present application, a rotation space 24 is provided at the other end of the nail magazine 20. After the internal thread 312 is separated from the external thread 51, the nail body 31 enters the rotation space 24 and is able to rotate in the rotation space 24.

[0130] After the internal thread 312 is separated from the external thread 51, the nail body 31 loses the axial constraint of the thread drive and enters the rotation space 24. The core purpose of the rotation space 24 is to provide an exclusive area for the rotation action of the nail body 31, ensuring that the rotation action of the suture nail 30 is smooth and unobstructed throughout the entire process.

[0131] like Figures 10 to 18 As shown, in one embodiment of the present application, a limiting surface 23 extending radially along the outer tube 10 is provided on the other end of the staple cartridge 20 , and the limiting surface 23 can interfere with the suture staples 30 .

[0132] After the internal thread 312 is separated from the external thread 51, the second limiting structure 33 can interfere with the limiting surface 23. In a specific embodiment of the present application, a limiting surface 23 is formed between the accommodating space 21 and the rotating space 24. Figure 19 As shown, in another specific embodiment of the present application, the limiting surface 23 is the end surface of the nail magazine 20.

[0133] When the suture staple 30 has been screwed into the mucosal tissue, the rotating member 50 is withdrawn. Since the second limiting structure 33 interferes with the limiting surface 23, the rotating member 50 cannot drive the staple body 31 to move through the elastic member. The elastic member is deformed under the interaction with the staple body 31, so that the elastic member is withdrawn from the through hole 311 to separate the suture staple 30 from the thread-driven treatment device.

[0134] The above structure can separate the suture staple 30 from the thread-driven treatment device simply by cooperating with the "second limiting structure 33, limiting surface 23, elastic member, and through-hole 311." This "few parts, highly integrated" design significantly reduces the structural complexity of the device, making it suitable for minimally invasive or delicate surgical scenarios. Furthermore, when multiple suture staples 30 are installed in the staple cartridge 20, continued driving of the rotating member 50 causes the rearmost suture staple 30 to move axially, thereby pushing out the frontmost suture staple 30 to be released.

[0135] like Figures 8 to 19 As shown, in one embodiment of the present application, the rotating member 50 includes a driving section 55 , a connecting section 56 and a transition section 57 connected in sequence, and the connecting section 56 is provided with an external thread 51 .

[0136] After the internal thread 312 is separated from the external thread 51, the nail body 31 is located in the transition section 57, and a gap is formed between the nail body 31 and the transition section 57. In a specific embodiment of the present application, when a clamping tube 54 is provided on the rotating member 50, the transition section 57 and the clamping tube 54 are the same component, and the outer surface of the clamping tube 54 is not threaded.

[0137] The transition section 57 connects to the connecting section 56 with the external threads 51 and directly receives the nail body 31 after the threaded engagement is released (the internal threads 312 separate from the external threads 51). During the threaded engagement phase, the nail body 31's internal threads 312 cooperate with the external threads 51 of the connecting section 56 to achieve force transmission and position control. When the threads separate, the nail body 31 must exit the threaded engagement area. The transition section 57 provides a transition zone for the nail body 31 to transition from a "thread-constrained state" to a "rotatable state."

[0138] In one embodiment of the present application, the rotating member includes a driving section and a connecting section connected in sequence, and the connecting section is provided with an external thread.

[0139] After the internal thread and the external thread are separated, the nail body is separated from the connecting section.

[0140] During the threaded engagement phase, the external thread of the connecting segment and the internal thread of the nail body achieve force transmission (such as pushing the nail body axially to the target position) through rigid cooperation. At this time, the movement of the nail body is completely constrained by the connecting segment (it cannot rotate freely or deflect). And "after the internal thread and the external thread are separated, the nail body is separated from the connecting segment", which means that the nail body is completely free from the thread constraints of the connecting segment and obtains complete freedom of movement. This provides the necessary conditions for the nail body to enter the rotation space to rotate and adjust its posture (such as rotating within the rotation space) or finally separate from the device (such as the elastic member is withdrawn from the through hole).

[0141] Example 3

[0142] like Figures 25 to 28 As shown, the structure of the third embodiment is substantially the same as that of the second embodiment, the main difference being that the rotating member 50 includes a first portion 58 and a second portion 59 that are detachably connected, the first portion 58 being disposed in the outer tube 10, the second portion 59 being disposed in the nail magazine 20, and the second portion 59 being provided with an external thread 51.

[0143] The outer tube 10 is detachably connected to the nail magazine 20 .

[0144] The staple cartridge 20, the suture staples 30, and the second portion 59 constitute a suturing assembly. It should be emphasized that in some application scenarios, in order to accommodate the curvature of the front end of the flexible endoscope, two suture staples 30 are typically provided inside the staple cartridge 20 in the device of this embodiment and other detachable embodiments. After both suture staples 30 are released, the endoscope is withdrawn from the natural cavity of the human body, and then the outer tube 10 and the staple cartridge 20 are directly disassembled, and a new suture assembly is assembled and entered into the natural cavity of the human body for continuous suturing, which improves operational efficiency and the effect of suturing. In addition, multiple suture assemblies can be connected in series with the suture 40 through a connecting ring 35 outside the body to facilitate the replacement of new suture assemblies and achieve the "effect of endoscopic purse-string suturing."

[0145] A rotating member 60 is disposed within the outer tube 10. The rotating member 60 includes an inner ring 61 and an outer ring 62 rotatably connected to the inner ring 61. The outer ring 62 is fixedly connected to the outer tube 10. The first portion 58 is fixedly connected to the inner ring 61. One end of the second portion 59 is inserted into the connection hole of the inner ring 61 and is rotationally limited with the inner ring 61. The second portion 59 is detachably connected to the inner ring 61. Specifically, the rotating member 60 is a bearing.

[0146] like Figures 26 to 28 As shown, in one embodiment of the present application, in the radial direction of the through hole 311 , the cross-sectional shape of the connecting hole is non-circular (such as a square hole, a hexagonal hole, a D-shaped hole, etc.).

[0147] In the radial direction of the through hole 311 , the cross-sectional shape of one end of the second portion 59 is adapted to the cross-sectional shape of the connecting hole (eg, square, hexagonal, D-shaped, etc.).

[0148] Non-circular holes can be machined directly on the part body, eliminating the need for additional keyways, pin holes, and other limiting structures on the shaft or hole. This avoids space occupation caused by excessive parts and significantly simplifies the structure.

[0149] In another embodiment of the present application, the second portion and the inner ring may be rotationally limited by a spline.

[0150] Example 4

[0151] like Figures 29 to 34 As shown, the structure of the fourth embodiment is substantially the same as that of the third embodiment, with the main difference being that the nail magazine 20 is sleeved with the end of the outer tube 10 .

[0152] The staple cartridge 20 is provided with a first annular retaining portion 26, and the outer tube 10 is provided with a second annular retaining portion 12. The first annular retaining portion 26 and the second annular retaining portion 12 are located between the staple cartridge 20 and the outer tube 10, and the first annular retaining portion 26 and the second annular retaining portion 12 are engaged with each other. Specifically, one of the first annular retaining portion 26 and the second annular retaining portion 12 is a protrusion and the other is a groove, and the protrusion can be engaged with the groove, or both the first annular retaining portion 26 and the second annular retaining portion 12 are protrusions.

[0153] During assembly, it is only necessary to push the nail magazine 20 axially into the outer tube 10 , and the first annular limiting portion 26 and the second annular limiting portion 12 are guided and fitted to achieve automatic alignment and connection. The entire process does not require any tools and the assembly time is short.

[0154] like Figures 29 to 33 As shown, in one embodiment of the present application, the thread-driven treatment device further includes an elastic ring 70 .

[0155] The elastic ring 70 is located between the nail magazine 20 and the outer tube 10, and is engaged with the first annular limiting portion 26 and the second annular limiting portion 12. When the first annular limiting portion 26 or the second annular limiting portion 12 is a groove, the elastic ring 70 is engaged with the groove.

[0156] The elastic ring 70 can completely fill the small gap between the first annular limiting portion 26 and the second annular limiting portion 12 through adaptive deformation, avoiding the "loosening abnormality" or "limiting failure risk" caused by the gap in traditional hard contact clamping.

[0157] like Figure 34 As shown, in one embodiment of the present application, the threaded drive treatment device further includes a "C"-shaped ring 80, which is located between the nail magazine 20 and the outer tube 10, and is clamped with the first annular limit portion 26 and the second annular limit portion 12.

[0158] The “C”-shaped ring 80 is an open ring with an opening. The opening gives the “C”-shaped ring 80 precise radial elasticity, that is, the open structure allows radial contraction and expansion, and can be easily put on the outer tube 10 or the nail magazine 20 during assembly.

[0159] Example 5

[0160] like Figures 35 to 37 As shown, the structure of Example 5 is substantially the same as that of Example 3, the main difference being that a card slot 25 is provided on one of the nail magazine 20 and the outer tube 10, and a card block 11 is provided on the other, and the outer tube 10 and the nail magazine 20 are detachably connected through the cooperation of the card slot 25 and the card block 11.

[0161] The card block 11 (rigid protrusion structure) and the card slot 25 have a simple structure and are easy to connect. The connection can be completed only by "axial pushing and alignment + embedding the card block 11 into the card slot 25". When disassembling, apply reverse pulling force or a specific unlocking force (such as the card block 11 is designed with an unlocking pressing part) to separate them. The whole process can be completed in seconds.

[0162] Example 6

[0163] The structure of the sixth embodiment is substantially the same as that of the third embodiment, with the main difference being that the nail magazine is sleeved with the end of the outer tube.

[0164] One of the nail magazine and the outer tube is provided with an elastic buckle, and the other is provided with a clamping hole. The outer tube and the nail magazine are detachably connected through the cooperation of the elastic buckle and the clamping hole.

[0165] After the elastic buckle is assembled, it continuously applies pre-tightening force through its own elastic force, and can be tightly inserted into the card hole to form a stable "anti-loosening locking" state. It can effectively prevent the connection from loosening or falling off due to vibration, force, etc. during use, and ensure that the nail magazine maintains precise alignment with the outer tube during operations such as firing and suturing, thereby ensuring the safety of the operation.

[0166] Example 7

[0167] The structure of the seventh embodiment is substantially the same as that of the second embodiment, with the main difference being that the first position-limiting rotation portion is provided on the outer surface of the nail body. In a specific embodiment of the present application, the first position-limiting rotation portion and the first position-limiting structure may be the same structure.

[0168] The second position-limiting rotation portion is provided on the space wall of the accommodating space and is located at the other end of the nail magazine. The second position-limiting rotation portion extends in a spiral shape along the axial direction of the outer tube.

[0169] The first position-limiting rotation portion cooperates with the second position-limiting rotation portion to enable the nail body to rotate relative to the nail magazine.

[0170] During the process of screwing a suture staple into human tissue, the suture staple undergoes two stages of movement. In the first stage, the continuous rotation of the rotating member is converted into axial movement of the suture staple through the cooperation of the internal thread, the external thread, the first limiting structure, and the second limiting structure, until the puncture portion is completely extended from the staple cartridge. In the second stage, the first limiting structure and the second limiting structure are separated, and at the same time, the second limiting rotating portion cooperates with the first limiting rotating portion (the first limiting structure). The rotation of the suture staple is achieved through the cooperation of the internal thread, the external thread, the first limiting rotating portion, and the second limiting rotating portion. When the suture staple needs to be separated from the thread-driven treatment device, it is only necessary to separate the internal thread and the external thread.

[0171] The spiral second limiting rotating part extends axially along the outer tube, and its spiral trajectory is essentially a coupling path of "rotational motion" and "axial displacement". When the rotating member drives the nail body to rotate relative to each other, the first limiting rotating part slides along the spiral trajectory of the second limiting rotating part, which can simultaneously realize the rotation and axial propulsion of the nail body. This coordinated movement can complete the "position + orientation" of the nail body in a single operation, greatly improving the operating efficiency, so that the suture nail can be advanced forward to approach the tissue while rotating to the optimal suturing angle (such as perpendicular to the tissue surface) to ensure suturing accuracy.

[0172] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of the present application, rather than to limit them. Although the present application 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 make equivalent replacements for some or all of the technical features therein. These modifications or replacements do not deviate the essence of the corresponding technical solutions from the scope of the technical solutions of the embodiments of the present application, and they should all be included in the scope of the claims and specification of the present application. In particular, as long as there is no structural conflict, the various technical features mentioned in the various embodiments can be combined in any way. The present application is not limited to the specific embodiments disclosed herein, but includes all technical solutions that fall within the scope of the claims.

Claims

1. A thread-driven treatment device, characterized in that: include: External control; a nail magazine, one end of which is connected to the outer tube, the nail magazine having a receiving space, and a first limiting structure provided in the receiving space; At least one suture staple, the suture staple being disposed in the accommodation space, the suture staple comprising a staple body and a puncture portion, the staple body being provided with a second limiting structure, the staple body being provided with a through hole extending therethrough, and the through hole being internally threaded; a suture connected to the staple; and A rotating member, one end of the rotating member passes through the outer tube and is inserted into the through hole, and an external thread that cooperates with the internal thread is provided on the outer surface of one end of the rotating member, and the first limiting structure cooperates with the second limiting structure to enable the nail body to move in the nail magazine.

2. The thread-driven treatment device according to claim 1, characterized in that: The nail body is provided with a first position-limiting rotation portion; the puncture portion is a suture nail; The thread-driven treatment device further includes a second position-limiting rotation portion, which is configured to cooperate with the first position-limiting rotation portion to enable the nail body to rotate relative to the nail magazine.

3. The thread-driven treatment device according to claim 2, characterized in that: The first limiting rotation portion is provided on the hole wall of the through hole; The second position-limiting rotation portion is provided at one end of the rotating member, and the second position-limiting rotation portion is an elastic member; Wherein, after the internal thread is separated from the external thread, the elastic member interferes with the first position-limiting rotation portion along the rotation direction of the rotating member.

4. The thread-driven treatment device according to claim 3, characterized in that: The elastic member includes a first piece and a second piece, one end of the first piece is connected to one end of the second piece, the first piece and the second piece extend along the axial direction of the outer tube, and the distance between the first piece and the second piece gradually increases.

5. The thread-driven treatment device according to claim 4, characterized in that: The first sheet and the second sheet are an integral structure; The connecting ends of the first piece and the second piece are connected to the rotating member.

6. The thread-driven treatment device according to claim 5, characterized in that: One end of the rotating member is provided with a clamping groove, and the connecting end is inserted into the clamping groove and connected to the rotating member.

7. The thread-driven treatment device according to claim 5, characterized in that: A clamping tube is provided at one end of the rotating member, and the connecting end is arranged inside the clamping tube and connected to the rotating member.

8. The thread-driven treatment device according to claim 2, characterized in that: A limiting surface extending along the radial direction of the outer tube is provided on the other end of the staple cartridge, and the limiting surface can interfere with the suture staple.

9. The thread-driven treatment device according to claim 8, characterized in that: After the internal thread is separated from the external thread, the second limiting structure can interfere with the limiting surface.

10. The thread-driven treatment device according to claim 1, characterized in that A rotation space is provided at the other end of the nail magazine. After the internal thread is separated from the external thread, the nail body enters the rotation space and can rotate in the rotation space.

11. The thread-driven treatment device according to claim 10, characterized in that: A finite surface is formed between the accommodating space and the rotating space.

12. The thread-driven treatment device according to claim 2, characterized in that: The first limiting rotation portion is provided on the outer surface of the nail body; The second position-limiting rotation portion is provided on a space wall of the accommodating space and is located at the other end of the nail magazine, and the second position-limiting rotation portion extends in a spiral shape along the axial direction of the outer tube; Wherein, the first limiting rotation portion cooperates with the second limiting rotation portion to enable the nail body to rotate relative to the nail magazine.

13. The thread-driven treatment device according to claim 1, characterized in that The puncture part is a linear puncture needle, and the puncture needle is provided with barbs.

14. The thread-driven treatment device according to any one of claims 1 to 13, characterized in that: One of the first limiting structure and the second limiting structure is a groove, and the other is a protrusion, and the protrusion is inserted into the groove.

15. The thread-driven treatment device according to any one of claims 1 to 13, characterized in that: In the radial direction of the through hole, the cross-sectional shape of the accommodating space is non-circular; In the radial direction of the through hole, the cross-sectional shape of the nail body is adapted to the cross-sectional shape of the accommodating space; The first limiting structure is the accommodating space having a non-circular cross-sectional shape, and the second limiting structure is the nail body having a non-circular cross-sectional shape.

16. The thread-driven treatment device according to any one of claims 1 to 13, characterized in that: The rotating member includes a driving section, a connecting section and a transition section connected in sequence, and the connecting section is provided with the external thread; After the internal thread is separated from the external thread, the nail body is located in the transition section.

17. The thread-driven treatment device according to claim 16, characterized in that When a clamping tube is provided on the rotating member, the transition section and the clamping tube are the same component.

18. The thread-driven treatment device according to any one of claims 1 to 13, characterized in that: The rotating member includes a driving section and a connecting section which are connected in sequence, and the connecting section is provided with the external thread; after the internal thread is separated from the external thread, the nail body is separated from the connecting section.

19. The thread-driven treatment device according to any one of claims 1 to 13, characterized in that: The rotating member includes a first part and a second part that are detachably connected, the first part is arranged in the outer tube, the second part is arranged in the nail magazine, and the second part is provided with the external thread; The outer tube is detachably connected to the nail cartridge; The staple cartridge, the suture staples, and the second portion constitute a suturing assembly.

20. The thread-driven treatment device according to claim 19, wherein: A rotating part is provided in the outer tube, and the rotating part includes an inner ring and an outer ring rotatably connected to the inner ring. The outer ring is fixedly connected to the outer tube, the first part is fixedly connected to the inner ring, one end of the second part is inserted into the connecting hole of the inner ring and is limited in rotation with the inner ring, and the second part is detachably connected to the inner ring.

21. The thread-driven treatment device according to claim 20, wherein: In the radial direction of the through hole, the cross-sectional shape of the connecting hole is non-circular; In the radial direction of the through hole, the cross-sectional shape of one end of the second portion is adapted to the cross-sectional shape of the connecting hole.

22. The thread-driven treatment device according to claim 19, wherein: One of the nail magazine and the outer tube is provided with a card slot, and the other is provided with a card block. The outer tube and the nail magazine are detachably connected through the cooperation of the card slot and the card block.

23. The thread-driven treatment device according to claim 19, wherein: The nail cartridge is sleeved with the end of the outer tube; The nail magazine is provided with a first annular limiting portion, and the outer tube is provided with a second annular limiting portion. The first annular limiting portion and the second annular limiting portion are located between the nail magazine and the outer tube, and the first annular limiting portion and the second annular limiting portion are clamped together.

24. The thread-driven treatment device according to claim 23, wherein: The thread-driven treatment device further includes an elastic ring, which is located between the nail magazine and the outer tube and is clamped with the first annular limiting portion and the second annular limiting portion.

25. The thread-driven treatment device according to claim 23, wherein: The thread-driven treatment device further includes: a "C"-shaped ring, which is located between the nail magazine and the outer tube and is clamped with the first annular limiting portion and the second annular limiting portion.

26. The thread-driven treatment device according to claim 19, wherein: The nail cartridge is sleeved with the end of the outer tube; One of the nail magazine and the outer tube is provided with an elastic buckle, and the other is provided with a clamping hole. The outer tube and the nail magazine are detachably connected through the cooperation of the elastic buckle and the clamping hole.

27. The thread-driven treatment device according to any one of claims 1 to 13, characterized in that The nail magazine is provided with a notch extending along the axial direction of the outer tube to the end surface of the other end of the nail magazine; the suture nail also includes a connecting ring, which is sleeved on the nail body and can rotate relative to the nail body, and part of the connecting ring is located in the notch.

28. The thread-driven treatment device according to claim 27, wherein: The nail body includes a base and a limiting ring, one end of the base is connected to the puncture part, the limiting ring is sleeved on the other end of the base and forms a mounting groove with the base, and the connecting ring is sleeved in the mounting groove.

Images