Suture device, treatment device with suture device, and treatment apparatus

Abstract

The application provides a suture device, a treatment device with the suture device and a treatment equipment. The suture device comprises a main housing, a suture needle, a needle feeding assembly and a needle preventing assembly. The suture needle is slidably arranged in the main housing. One end of the suture needle is connected with a suture thread, and the other end of the suture needle is a pointed end. The needle feeding assembly is arranged in the main housing and comprises a driving member, a reset member and a needle feeding tooth. The needle feeding tooth is in a separable engagement with the suture needle. The driving member acts on the needle feeding tooth and the suture needle in the engagement state, controls the suture needle to advance and causes the reset member to deform. When the driving member is released, the engagement between the needle feeding tooth and the suture needle is released, and the reset member drives the needle feeding tooth to reset. Alternatively, the driving member acts on the needle feeding tooth relative to the suture needle in the engagement release state and causes the reset member to deform. When the driving member is released, the needle feeding tooth is engaged with the suture needle, and the reset member drives the needle feeding tooth and the suture needle to advance. The needle preventing assembly is arranged in the main housing and prevents the suture needle from retreating.

Description

Technical Field

[0001] This invention relates to a treatment device, and more particularly to a suture device, a treatment device having a suture device, and a treatment equipment. Background Technology

[0002] Minimally invasive techniques represent a trend in modern surgery, but they still leave scars on the patient's body. Therefore, scarless surgery has emerged. Surgery without visible scars requires a flexible endoscope to be used through natural orifices. Thus, natural orifice flexible endoscopy has become a research hotspot in scarless surgery, representing the third generation of surgical techniques after open surgery and laparoscopic surgery. Scarless surgery results in less physiological and psychological trauma, and a corresponding reduction in intraoperative and postoperative complications. Furthermore, natural orifice endoscopic surgery eliminates the need for general anesthesia, requiring less anesthetic and reducing the depth of anesthesia. Some patients remain conscious, significantly reducing anesthetic risks. Postoperative recovery is also faster, with a significantly shorter recovery time, reducing postoperative complications. It is particularly beneficial for extremely weak patients and those undergoing high-risk surgeries.

[0003] The Endoscopic HeliX Tacking System (https: / / www.x-tack.com / ), recently introduced by Apollo Surgical Instruments in the United States, can suture larger wounds or other targeted tissues. However, this system has many attachments and is more complicated to operate. The suturing relies on at least three metal spiral staples, and the knotting still relies on clamps. The hard, sharp spiral staples that rotate through the tissue for suturing remain in the body, making it difficult to rule out the possibility of secondary damage to the digestive system, or even the urinary and reproductive systems, such as perforation, intestinal leakage, and adhesions. In addition, the accumulation of knotted hard clamps makes it even more difficult to avoid damage caused by the peristalsis of the digestive tract and the movement of the abdomen.

[0004] Chinese Patent CN111419312A (filed April 27, 2020) discloses a suture device, a treatment apparatus with a suture device, and a treatment system. This patent achieves suturing and knotting of soft tissues in the body by controlling the advancement of the needle insertion component. The suture device in this patent has two control lines (cords) on its needle insertion component. During operation, the two control lines (cords) are controlled to move the needle insertion component in different directions, thereby achieving needle insertion, needle withdrawal, and threading. The installation of the two control lines (cords) on the control handle makes the structure of the suture device and control handle complex, the connection intricate, and the steps increased, leading to reduced operator compliance, increased volume at the connection points, and a higher probability of suture derailment during operation. The control of the two control cords makes the control action of the control handle complex and prone to disorder. Controlling the two manipulatory cords requires the operator's two hands. The right hand is the primary and continuous operating hand for the endoscopic operator. Using the right hand to assist the left hand in operating the control handle negatively impacts the progress, speed, continuity, accuracy, safety, consistency, and concentration required for treatment or examination using the endoscope and suture device. Furthermore, if the manipulatory cord's trajectory within the control handle or suture device relies on right angles or other non-curved, smooth surfaces, it can lead to increased resistance, difficulty in pulling back the lever, inaccurate needle insertion, increased tissue damage, fatigue breakage of the manipulatory cord, wear and tear on the endoscopic cavity or clamp channels, and a reduced number of test lever pullbacks.

[0005] Furthermore, the two control lines (cords) completely prevent the suture device from rotating in the C-shape. If the suture device rotates coaxially, the two lines (cords) will cross and become entangled, the needle will be unable to advance or retreat, and the operation will stop, making suturing impossible. Because the suture device in this patent cannot rotate coaxially to arbitrarily change the orientation and position of the C-shape opening, it can only rely on the bending of the endoscope tip to locally adjust the direction and position of the suture. Especially in confined internal spaces, this increases the difficulty of suturing, weakens the suturing force, and makes it impossible to quickly and accurately align or even suture the target tissue.

[0006] Specifically, when the endoscopic stapler is inserted into the body for suturing, the operator's field of vision relies entirely on the endoscope's tip lens, which is attached to the stapler. The insertion, suturing, and knotting operations depend on a constantly advancing and retreating, non-elastic control cord. Experiments show that this inevitably leads to cord accumulation in front of the lens or increased suture handling. To avoid this, a torque limiter is installed inside the control handle to prevent cord breakage. However, this not only increases manufacturing costs but also increases the size of the control handle. The distance between the handle's lever and the operator's thumb is too large, which is ergonomically unsound, causing finger fatigue and affecting surgical procedures. Furthermore, the manipulation of the control handle, such as lifting and pulling the ring knob and other operating actions, requires assistance from the other hand.

[0007] Endoscopes come in various diameters. If the diameter of the tubular part of the stapler that connects to the endoscope tip is fixed, it will be difficult to adapt to endoscopes of various diameters. This would either limit the applicability of a single stapler size, increase the manufacturing cost of multiple stapler sizes, or require passive adaptation to new endoscope diameters. Furthermore, if the connecting component between the tubular part and the main housing is an arc-shaped tile-like plate, it would restrict the adjustment of the tubular part's diameter. Summary of the Invention

[0008] In order to overcome at least one deficiency of the prior art, the present invention provides a suture, a treatment device having a suture, and a treatment equipment.

[0009] To achieve the above objectives, in one aspect, the present invention provides a suture device, comprising a main housing, a suture needle, a needle insertion assembly, and an anti-retraction assembly. The suture needle is slidably disposed in the main housing, one end of which is connected to a suture thread, and the other end of the suture needle is a pointed tip. The needle insertion assembly is disposed in the main housing and includes a drive member, a reset member, and needle insertion teeth, the needle insertion teeth being in a separable engaging relationship with the suture needle; the drive member acts on the engaged needle insertion teeth and the suture needle, controlling the advancement of the suture needle and causing the reset member to deform; when the drive member is released, the engagement between the needle insertion teeth and the suture needle is released, and the reset member drives the needle insertion teeth to reset; alternatively, the drive member acts on the disengaged needle insertion teeth to move relative to the suture needle, and the reset member deforms; when the drive member is released, the engagement between the needle insertion teeth and the suture needle is released, and the reset member drives the needle insertion teeth and the suture needle to advance. The anti-retraction assembly is disposed in the main housing and forms a separable engaging relationship with the suture needle, preventing the suture needle from retracting. The single-thread needle insertion design results in a simple suture device, reduced resistance during operation, unobstructed view during suturing, and reduced tangling. Furthermore, it allows for coaxial rotation to accurately reach the target suturing site and achieve optimal suturing results. The suture device of this invention employs cross-cutting suturing, eliminating limitations based on wound size or the size of other target suturing tissue areas.

[0010] According to one embodiment of the present invention, the driving member is a control rope acting on the feed needle, and the resetting member is a return spring or metal spring acting on the feed needle.

[0011] According to one embodiment of the present invention, the main housing has a groove, the suture needle is disposed in the groove, the needle insertion assembly further includes a slider disposed in the groove and located above the suture needle, the toothed needle is retractably mounted on the slider, and the driving member and the resetting member are both connected to the slider.

[0012] According to an embodiment of the present invention, the needle insertion assembly further includes an upper shell and an upper cover that are sequentially covered by the main housing, forming a receiving cavity between the upper shell and the upper cover. The slider includes a slider body and a slider connecting part, the slider connecting part passing through the upper shell and the upper cover in sequence. A reset member is disposed in the receiving cavity, one end of which is connected to the slider connecting part, and the other end of which is connected to the upper shell or the upper cover. A drive member is connected to the upper end of the slider connecting part.

[0013] According to one embodiment of the present invention, the bottom of the slider has a receiving groove, a reset member is disposed in the receiving groove and is limited between the slider and the suture needle, one end of the reset member is connected to the side wall of the receiving groove, and the other end is connected to the inner wall of the slide groove of the main housing.

[0014] According to one embodiment of the present invention, the suture device further includes an external forceps channel. The main housing includes a first housing, a second housing, and a third housing. The first housing and the second housing are fixedly connected, and the third housing is rotatably disposed on the first housing relative to the second housing. The external forceps channel is drivenly connected to the first housing, driving the relative rotation between the first housing, the second housing, and the third housing, so as to arbitrarily change the orientation and position of the C-shaped opening of the suture device coaxially. Alternatively, the forceps channel of the endoscope itself or other transmissions may be used; however, the present invention does not limit this in any way.

[0015] On the other hand, the present invention also provides a treatment device comprising a suture device and a single-thread (rope) control handle. The suture device is fixed to the tip of an endoscope and includes a main housing, a suture needle, a needle insertion assembly, and an anti-retraction assembly. The suture needle is slidably disposed in the main housing, one end of which is connected to a suture thread, and the other end of which is a pointed tip. The needle insertion assembly is disposed in the main housing and includes a drive member, a reset member, and needle insertion teeth, the needle insertion teeth being in a separable engaging relationship with the suture needle; the drive member acts on the engaged needle insertion teeth and the suture needle, controlling the advancement of the suture needle and causing the reset member to deform; when the drive member is released, the engagement between the needle insertion teeth and the suture needle is released, and the reset member drives the needle insertion teeth to reset; or, the drive member acts on the released needle insertion teeth to move relative to the suture needle and causes the reset member to deform; when the drive member is released, the needle insertion teeth engage with the suture needle, and the reset member drives the needle insertion teeth and the suture needle to advance. The anti-retraction assembly is disposed in the main housing and forms a separable engaging relationship with the suture needle to prevent the suture needle from retracting. A single-wire (rope) control handle is fixed to the operating end of the endoscope, and the suture drive is connected to the control handle. The control handle controls the drive to control the advance of the suture needle.

[0016] According to one embodiment of the present invention, a single-thread (rope) control handle includes a handle housing, a control rope wheel, a clutch disc, and a pull rod. The control rope wheel is disposed within the handle housing, and the drive component of the sewing machine is a control rope connected to the control rope wheel. The clutch disc is detachably disposed on one side of the control rope wheel, and the side of the clutch disc near the control rope wheel has a retaining ring that engages with the control rope wheel. The pull rod is connected to the clutch disc and is repositionably connected to the handle housing.

[0017] According to one embodiment of the present invention, the treatment device further includes a connecting ring, a snare ring, a hook forceps, and a knot-pushing tube. The connecting ring is fitted onto the endoscope. The snare ring performs tissue cutting at the tip of the endoscope. The hook forceps performs tissue clamping or suture hooking at the tip of the endoscope. The knot-pushing tube is pushed forward longitudinally and horizontally to help tighten the knot.

[0018] On the other hand, the present invention also provides a treatment device, which includes an endoscope and a treatment apparatus. The treatment apparatus is used in conjunction with the endoscope and includes a control handle and a suture device. The suture device is fixed to the tip of the endoscope and includes a main housing, a suture needle, a needle insertion assembly, and a needle retraction prevention assembly. The suture needle is slidably disposed in the main housing, one end of the suture needle is connected to a suture thread, and the other end of the suture needle is a pointed tip. The needle insertion assembly is disposed in the main housing and includes a drive member, a reset member, and needle insertion teeth. The needle insertion teeth and the suture needle are in a separable engagement relationship. The drive member acts on the engaged needle insertion teeth and the suture needle, controlling the advancement of the suture needle and causing the reset member to deform. When the drive member is released, the engagement relationship between the needle insertion teeth and the suture needle is released, and the reset member drives the needle insertion teeth to reset. Alternatively, the drive member acts on the released needle insertion teeth to make them move relative to the suture needle, and the reset member deforms. When the drive member is released, the needle insertion teeth engage with the suture needle, and the reset member drives the needle insertion teeth and the suture needle to advance. An anti-needle retraction component is located on the main housing and forms a separable locking relationship with the suture needle to prevent the suture needle from retracting. The control handle is fixed to the operating end of the endoscope, and the suture actuator's drive unit is connected to the control handle. The control handle controls the drive unit to control the forward movement of the suture needle.

[0019] According to one embodiment of the present invention, the first housing is rotatably connected to the third housing via a rotating gear of the main housing, and the transmission teeth of the external clamp tube mesh with the rotating gear. The external clamp tube drives the first housing and the second housing to rotate through the transmission of the clamp tube transmission teeth and the rotating gear. This arrangement facilitates the coaxial rotation of the suture device in the direction of the C-shaped opening in the body, especially in a narrow body space.

[0020] In summary, the suture device, treatment apparatus, and treatment equipment provided by this invention include a drive component, a reset component, and suture teeth within the needle insertion assembly. When the drive component moves the suture teeth, the reset component deforms synchronously; and when the drive component is released, the restoring force of the reset component resets the suture needle. This design allows the suture needle to advance using only one component—the drive component—controlled by a single-wire (rope) control handle. During surgery, the endoscopic operator only needs to control the control handle with one hand while continuously performing sutures with the other. Furthermore, the operation of a single component eliminates the need for the operator to look away from the control handle, ensuring that the operator's attention remains focused on the operation of the endoscope, thereby ensuring the safety and continuity of the surgical procedure.

[0021] Furthermore, the control handle utilizes a small clutch disc and the engagement of the control rope pulley to increase rotational torque, achieving miniaturization and cost reduction. Further, the use of the arc-shaped sidewall of the control rope pulley to pull the control rope significantly reduces resistance, making the lever operation easier, improving operator compliance, and greatly reducing damage to various components of the suture device, thus extending its lifespan. Moreover, the control handle reduces the distance between the lever and the web of the hand, minimizing finger spread and gripping range, conforming to hand ergonomics, and reducing the risk of tendon, ligament, or muscle damage. This results in more relaxed operation, more accurate suturing, faster surgery, longer-lasting sutures, and less finger fatigue.

[0022] To make the above and other objects, features and advantages of the present invention more apparent and understandable, preferred embodiments are described below in detail with reference to the accompanying drawings. Attached Figure Description

[0023] Figure 1A The diagram shown is a structural schematic of the suture provided in Embodiment 1 of the present invention.

[0024] Figure 1B and Figure 1C for Figure 1A A structural diagram from another perspective.

[0025] Figure 2 for Figure 1A A schematic diagram of its breakdown.

[0026] Figure 3 As shown Figure 1A Assembly diagram of the central suture needle and needle insertion assembly.

[0027] Figure 4A The diagram shown is a structural schematic of the suture needle provided in Embodiment 1 of the present invention.

[0028] Figure 4B As shown Figure 4AA structural diagram from another perspective.

[0029] Figure 4C As shown Figure 4A Side view.

[0030] Figures 5A-5F The diagram shows the anti-retraction assembly, suture needle, and needle insertion assembly of the suture device provided in Embodiment 1 of the present invention in different states during operation.

[0031] Figure 6A The diagram shown is a structural schematic of a single-wire (rope) control handle provided in an embodiment of the present invention.

[0032] Figures 6B to 6D for Figure 6A A structural diagram from another perspective.

[0033] Figure 6E for Figure 6A A schematic diagram of its breakdown.

[0034] Figure 7 The diagram shown is an assembly diagram of the control pulley and the front shell of the handle on a single-line (rope) control handle according to an embodiment of the present invention.

[0035] Figure 8 As shown Figure 7 A schematic diagram showing the structure of the control rope connected to the control rope wheel via an arc-shaped pin and a pin spring.

[0036] Figure 9 As shown Figure 7 A schematic diagram of the assembly of the control rope, the arc pin, and the pin spring.

[0037] Figure 10A The diagram shown is an assembly diagram of the control handle upper lever, handle rear shell, clutch disc and control rope wheel provided in an embodiment of the present invention.

[0038] Figure 10B As shown Figure 10A A structural diagram from another perspective.

[0039] Figure 10C for Figure 10A A schematic diagram of its breakdown.

[0040] Figure 11A This is an assembly diagram of the control handle upper lever, handle front shell, and clutch disc provided in an embodiment of the present invention.

[0041] Figure 11B for Figure 11A A structural diagram from another perspective.

[0042] Figure 12 The diagram shows the installation of the connecting ring, endoscope, and push tube.

[0043] Figure 13A The diagram shown is a structural schematic of the suture provided in Embodiment 2 of the present invention.

[0044] Figure 13B and Figure 13C for Figure 13A A structural diagram from another perspective.

[0045] Figure 14 for Figure 13A A schematic diagram of its breakdown.

[0046] Figure 15 As shown Figure 13A Assembly diagram of the central suture needle and needle insertion assembly.

[0047] Figures 16A-16F The diagram shows the anti-retraction assembly, suture needle, and needle insertion assembly of the suture device provided in Embodiment 1 of the present invention in different states during operation.

[0048] Figure 17A This is a schematic diagram of the suture device provided in Embodiment 3 of the present invention.

[0049] Figure 17B and Figure 17C for Figure 17A A structural diagram from another perspective.

[0050] Figure 18 for Figure 17A A schematic diagram of its breakdown.

[0051] Figure 19A As shown Figure 17A A schematic diagram of the assembly of the second and third housings and the external clamping tube.

[0052] Figure 19B for Figure 19A A structural diagram from another perspective.

[0053] Figure 20 for Figure 19B A magnified view of a portion of the image.

[0054] Figure 21A , Figure 21B , Figure 21C The diagram shown is a schematic of the adjustable tubular section. Detailed Implementation

[0055] This invention provides a suture device, a single-thread (rope) control handle that cooperates with the suture device, a treatment device consisting of the suture device and the control handle, and a treatment apparatus consisting of the treatment device and an endoscope that cooperates with it. The suture device can be used to perform internal suturing on mammalian tissues, regardless of whether the subject is human or whether the subject has vital signs. The suture device provided by this invention can be used not only with an endoscope but also with other devices capable of steering guidance.

[0056] like Figures 1A to 2 As shown, the present invention provides a suture device 1 for puncturing and suturing tissue to perform surgical procedures inside the body. The suture device 1 includes a main housing 11, a needle insertion assembly 12, a suture needle 13, and a needle anti-retraction assembly 14.

[0057] In this embodiment, the suture device 1 is used in conjunction with an endoscope. The main housing 11 includes a first housing 111 and a second housing 112. The endoscope is connected to the first housing 111, which has a variable diameter and can be constructed from self-locking teeth and / or chains and / or pins and / or combinations thereof to accommodate installation on endoscope tips of different diameters; however, the present invention does not limit this. The needle insertion assembly 12, the suture needle 13, and the anti-retraction needle assembly 14 are disposed in the second housing 112. The integrally molded main housing 11 provides a smooth transition at the connection between the first housing 111 and the second housing 112, with no sharp edges, thereby greatly reducing damage caused by the suture device touching internal tissues. However, the present invention does not limit the connection method between the first housing and the second housing. In other embodiments, the first housing and the second housing can also be connected separately via connectors.

[0058] When the suture device of this embodiment is used with a single-channel endoscope, the first housing 111 may have two channels 1111 and 1112 in the middle. The first channel 1111 can be fitted onto the tip of the endoscope, and the second channel 1112 allows an external clamp tube to pass through and be fixed thereto. However, the present invention does not limit this in any way. When the suture device is used with a double-channel endoscope, the first housing may have only one channel, allowing the suture device to be fitted onto the tip of the endoscope. In another embodiment, the first housing may not have a channel, but instead use other structures, such as a fixing strap or a fixing ring, to fix the suture device to the tip of the endoscope.

[0059] In this embodiment, the first housing 111 has an anti-tangle slide post 1113 at one end near the second housing 112. The control rope, which serves as the drive member 121, passes through the anti-tangle slide post 1113 and enters the first housing 111 from the inside. The anti-tangle slide post 1113 guides the slack control rope between the first housing 111 and the second housing 112, preventing the control rope from tangling in the slack state. However, the present invention does not impose any limitations on this.

[0060] In this embodiment, as Figure 2 As shown, the second housing 112 has a groove 1121, and the suture needle 13 is disposed within the groove 1121. The needle insertion assembly 12 is disposed within the groove 1121 and includes a drive member 121, a reset member 122, and needle insertion teeth 123. The needle insertion teeth 123 and the suture needle 13 are in a separable engaging relationship. The drive member 121 acts on the needle insertion teeth 123 to engage with the suture needle 13, and the two are in a linked state, thereby controlling the forward movement of the suture needle 13. Simultaneously, the reset member 122 deforms. When the drive member 122 is released, the engagement between the needle insertion teeth 123 and the suture needle 13 is released, and the reset member 122 drives the needle insertion teeth 123 to reset. During the next needle insertion, the drive member 122 again acts on the engaged needle insertion teeth 123 and the suture needle 13, and the drive member 122 drives the suture needle 13 forward through the needle insertion teeth 123, repeating this cycle to achieve continuous suturing. However, this invention does not impose any limitations on this aspect. In other embodiments, the engagement structure between the needle tooth and the suture needle can be adjusted so that when the driving member acts on the needle tooth, it causes the needle tooth to move relative to the suture needle after the engagement is released, and at the same time the reset member deforms; when the driving member is released, the needle tooth engages with the suture needle, and the reset member drives the needle tooth and the suture needle forward.

[0061] In the suture device provided by this invention, the forward movement of the suture needle 13 can be achieved by controlling the drive component 121 with a single thread (rope) control handle; in other words, the operator only needs to control it with one hand, while the other hand can maintain continuous operation of the endoscope, making the operation simpler and more convenient. At the same time, this design also means that only one groove 1121 needs to be provided in the second housing 112 to simultaneously accommodate the suture needle 13 and the drive component 112, greatly simplifying the structure of the second housing 112, reducing manufacturing costs, and shrinking the size of the suture device.

[0062] In this embodiment, the driving member 121 is a control rope, and the reset member 122 is a reset spring. However, the present invention does not limit this. In another embodiment, the driving member 121 may not use a pull rope, and control of the suture needle may be achieved by other structures. However, the present invention does not limit this. The reset member may also be a structure with a certain restoring force or elasticity made of polymer materials such as metal springs or elastic silicone. However, the present invention does not limit this.

[0063] In this embodiment, the needle insertion assembly 12 further includes a slider 124 disposed within the slide groove 1121 and located above the suture needle 13, and an upper shell 125 and an upper cover 126 sequentially covering the second housing 112. The toothed needle 123 is retractably mounted on the slider 124. The driving member 121 and the resetting member 122 are both connected to the slider. A receiving cavity 1251 is formed between the upper shell 125 and the upper cover 126. The slider 124 includes a slider body 1241 and a slider connecting portion 1242. The slider connecting portion 1242 passes through the upper shell 125 and the upper cover 126 sequentially. The resetting member 122 is disposed within the receiving cavity 1251, with one end connected to the slider connecting portion 1242 and the other end connected to the upper shell 125 or the upper cover 126. The driving member 121 is connected to the upper end of the slider connecting portion 1242. The receiving cavity 1251 formed by the upper shell 125 and the upper cover 126 limits the deformation direction of the reset member 122, preventing the reset member 122 from arching in other directions when deformed, thus affecting the direction of the restoring force. This arrangement ensures that the reset member 122 (reset spring) deforms circumferentially along the slide groove 1121, thereby smoothly driving the slider 124 and the feed needle 123 to reset along the slide groove 1121 during reset, and then driving the suture needle 13 to move forward stably. Preferably, the height of the receiving cavity 1251 is close to the diameter of the reset member 122. However, the present invention does not limit this in any way.

[0064] In this embodiment, the reset member 122 is detachably connected to the slider connecting portion 1242 via a connecting block 127. Specifically, the connecting block 127 engages with the slider connecting portion 1242, and one end of the reset member 122 is connected to the connecting block 127. However, the present invention does not limit this. In other embodiments, the connecting block 127 may also be detachably connected to the slider connecting portion using a screw or other connecting member. Regarding the feed pins 123, in this embodiment, the feed pin assembly 12 includes two feed pins 123. However, the present invention does not limit the number of feed pins. In other embodiments, the number of feed pins may be three or more.

[0065] like Figure 2 and Figure 5AAs shown, two feed needles 123 are respectively mounted at both ends of the slider body 1241. The bottom end of the feed needle 123 engages or disengages with the suture needle 13. A feed needle spring 128 is provided between the top end of the feed needle 123 and the bottom of the upper shell 125. When the suture needle 13 presses the bottom end of the feed needle 123, the feed needle spring 128 deforms, the feed needle 123 retracts upward, and the feed needle 124 separates from the suture needle 13. When the feed needle 123 runs to the groove 132 on the suture needle 13, the feed needle spring 128 resets and pushes the feed needle 123 so that the bottom of the feed needle 123 engages in the groove 132 of the suture needle. However, the present invention does not limit the telescopic structure of the feed needle. In other embodiments, other materials capable of elastic deformation can be used to replace the feed needle spring.

[0066] Figures 4A to 4C This is a schematic diagram of the suture needle provided in this embodiment. The suture 131 is fixedly or detachably fixed to one end of the suture needle 13, and the other end of the suture needle 13 is a pointed tip capable of piercing tissue. One side of the suture needle 13 has four slots 132, and the other side has three slots 132. This arrangement allows for needle insertion at 60° and 120°, making the stroke control of the suture needle 13 more flexible. If only a 180° needle insertion needs to be controlled, so many slots are unnecessary. In this embodiment, to prevent the suture needle from becoming thinner, the slots on both sides are staggered, meaning they are not perfectly aligned at the same location. This arrangement makes the suture needle less prone to bending, deformation, or breakage. However, this invention does not impose any limitations on this aspect.

[0067] The teeth of the needle guide tooth 123 are detachably engaged in the slot 132 of the suture needle 13. The present invention does not limit the number of slots 132. In this embodiment, each slot 132 has an asymmetrical structure, with one side being a steeply inclined surface a, which acts as a barrier, and the other side being a steeply inclined surface b, which matches the tip slope of the teeth of the needle guide tooth 123. The tip of the teeth of the needle guide tooth 123 is inclined, and under the force of the driving member 121, the tip slope of the teeth of the needle guide tooth 123 can slide out of the slot 132 through the inclined surface b, thereby releasing the engagement between the needle guide tooth 123 and the suture needle 13. In this embodiment, the angle between the inclined surface a of each slot 132 and one side c of the suture needle 13 is 60°-90°, and the angle between the inclined surface b of the other side and the side c of the suture needle 13 is 10°-45°. However, the present invention does not limit the specific degree of the inclination angle. In this embodiment, the inclined surface b is not a plane, but an arc surface, which makes it easier for the top of the tooth of the needle tooth 123 to slide out of the slot 132, thereby releasing the engagement relationship between the needle tooth 123 and the slot 132.

[0068] The suture needle 13 in this embodiment is a suture needle with a suture. Specifically, the tail of the suture needle 13 has a conical recess, one end of the suture 131 is inserted into the conical recess, and then the tail end of the suture needle 13 is squeezed or glued to fix the suture 131 to the tail end of the suture needle 13. However, the present invention does not limit this. In other embodiments, the suture can be detachably fixed to one end of the suture needle by other means, such as conventional needle threading. In this embodiment, the suture needle 13 can be made of stainless steel, and the diameter of the cross-section of the suture needle 13 can be 8mm, 10mm, 12mm, etc. However, the present invention does not limit this, and an appropriate size suture needle can be selected according to actual treatment needs. In this embodiment, the length of the suture 131 is 30cm-60cm, and the suture 131 can be made of polypropylene suture, nylon suture, etc. The present invention does not limit the length, diameter, and material of the suture. In other embodiments, bioabsorbable sutures can be used, which eliminates the need for suture removal and reduces the risk of secondary surgery for the patient.

[0069] In this embodiment, the anti-retraction needle assembly 14 is disposed on the second housing 112 and forms a separable engaging relationship with the suture needle 13 to prevent the suture needle 13 from retracting. The needle insertion assembly 12 and the anti-retraction needle assembly 14 are respectively located on both sides of the suture needle 13.

[0070] In this embodiment, as Figure 2 As shown, the anti-retraction needle assembly 14 includes a lower shell 141, anti-retraction needle teeth 142, and anti-retraction needle tooth spring pieces 143. The lower shell 141 covers the second shell 112 and has two positioning holes 1411. The two anti-retraction needle teeth 142 are respectively installed in the two positioning holes 1411, and the bottom end of the anti-retraction needle teeth 142 abuts against the anti-retraction needle tooth spring pieces 143. In actual assembly, the suture needle 13 is first placed in the slide groove 1121 of the second shell 112, then the lower shell 141 with the anti-retraction needle teeth 142 is closed onto the slide groove 1121, and then the anti-retraction needle tooth spring pieces 143 are fixed to the lower shell 141.

[0071] The tip of the anti-retraction needle tooth 142 can engage with the groove 132 of the suture needle 13. In this embodiment, the tips of the two anti-retraction needle teeth 142 are set as inclined surfaces. The inclination angle of this inclined surface matches that of the inclined surface b of the groove 132, so that the anti-retraction needle tooth 142 can slide out of the groove 132 through the inclined surface b under the force of the driving member 121. Specifically, the needle tooth 123 and the anti-retraction needle tooth 142 are located on both sides of the suture needle 13 and are detachably engaged with the groove 132 of the suture needle 13. In this article, detachable engagement means that the engagement relationship can be formed and released. The needle tooth 123 and the anti-retraction needle tooth 142 are detachably engaged with the suture needle 13, so complex functions (such as suturing the target suture tissue and knotting the suture thread) can be achieved with a simple structure. The suture device occupies a small volume and has a low manufacturing cost. The present invention does not limit the tip shape of the needle tooth 123 and the anti-retraction needle tooth 142. In other embodiments, the tips of the needle-feeding teeth 123 and the anti-retraction teeth 142 may also be arc-shaped to facilitate sliding. Any mutually engaging structure that can form and disengage with the suture needle can achieve the function of the present invention and is within the scope of protection of the present invention.

[0072] In this embodiment, the anti-retraction needle tooth spring 143 applies elastic pressure to the anti-retraction needle tooth 142 by its own elastic force, which can both make the anti-retraction needle tooth 142 displace when the suture needle 13 moves so as to slide out of the slot 132, and press the anti-retraction needle tooth 142 with its elastic force so that it is locked in the slot 132.

[0073] To more clearly illustrate how the suture device provided in the embodiments of the present invention performs the suturing action of the target suture tissue, the following is combined with... Figures 5A-5F A description is provided below. To clearly show the location of internal parts, not all components are shown in the accompanying drawings. The terms "front," "back," "left," and "right" used in the following description are based on... Figures 5A-5F In terms of their positional relationship, specifically, the feed needle is located on the front of the suture needle, while the anti-retraction needle is located on the back of the suture needle. Figures 5A-5F The left side (a) of each figure shows the connection relationship of the needle insertion assembly 12, the suture needle 13, and the anti-retraction assembly 14 when the drive member 121 is pulled; the right side (b) shows the connection relationship of the needle insertion assembly 12, the suture needle 13, and the anti-retraction assembly 14 after the drive member 121 is released and the reset member 122 drives the needle insertion assembly 12 to reset. It is also defined that: from the end of the suture needle connected to the suture thread (the left end of the suture needle in the figure) to the tip of the suture needle (the right end of the suture needle in the figure), the four slots on the front of the suture needle are the first front slot, the second front slot, the third front slot, and the fourth front slot; similarly, the four slots on the back of the suture needle are defined as the first back slot, the second back slot, and the third back slot.

[0074] Figure 5F Figure (b) shows the position of the two needle teeth 123, the suture needle 13 and the two anti-retraction teeth 142 in the suture device 1 in the initial state; at the same time, this state is also the position of the suture device after a suture is completed, that is, the suture device returns to the initial position after a suture is completed.

[0075] At the initial position, such as Figure 5F As shown in (b), the two needle teeth 123 of the needle insertion assembly 12 are respectively engaged with the first front groove and the third front groove of the suture needle 13. One of the anti-retraction teeth 142 of the anti-retraction assembly 14 (as shown in Figure 14) Figure 5F The anti-retraction needle tooth 142 (shown in (b)) on the right side engages in the third back groove of the suture needle 13. At this time, pulling the drive member 121 (i.e., the control rope in this embodiment) causes the two needle teeth 123 to engage in the two grooves 132 of the suture needle 13, with the force directed to make the tip of the needle tooth 123 abut against the side of the groove 132 with a larger inclination angle. At this time, the needle tooth 123 and the suture needle 13 are linked. Under the action of external force, the drive member 121 pulls the needle tooth 123, thereby driving the entire suture needle 13 forward in a clockwise direction; simultaneously, the reset member 122 is compressed. When the reset member 122 is compressed to its limit, the slider 124 can no longer drive the needle tooth 123 forward, meaning the control rope can no longer be pulled. At this time, the anti-retraction needle tooth 142 on the right side is just engaged in the second back groove, as shown in the diagram. Figure 5A As shown in (a). For the anti-retraction tooth 132, in Figure 5F When the drive component is pulled for the first time at the position shown in (b), the anti-retraction needle tooth 142 moves counterclockwise relative to the sewing needle 13 (in reality, the anti-retraction needle tooth 142 does not move, but the sewing needle 13 moves clockwise). The anti-retraction needle tooth 142 on the right side can slide out through the inclined surface of the third back slot and then move to... Figure 5A The second back slot in (a) does not obstruct the movement of the suture needle 13. During this process, the tip of the suture needle 13 exits from the second housing 112 and passes through the target sutured tissue.

[0076] Afterwards, the operator releases the drive unit 121, meaning the clockwise force exerted by the drive unit 121 on the slider 124 disappears. At this time, the reset unit 122 provides a counterclockwise force to the slider 124 and the feed needles 123. The two feed teeth 123 will slide out through the inclined surfaces of the first and third front slots respectively and retract counterclockwise. The retraction displacement is the displacement of the reset unit 122 during compression. After reset, the feed needle 123 on the left side is suspended outside the tail end of the suture needle 13, while the feed needle 123 on the right side is engaged in the second front slot, as shown. Figure 5AAs shown in (b). During this process, the suture needle 13 is pressed against the side of the second back groove with a larger inclination angle by the tip of the anti-retraction tooth 142 located on the right side. The anti-retraction tooth 142 will not disengage from the second back groove, and the suture needle 13 will therefore not follow the toothed needle 123 to retract.

[0077] Then, the operator pulls the control rope a second time, causing the right-side needle tooth 123 to engage in the second front slot. The force is directed so that the tip of the right-side needle tooth 123 abuts against the side of the second front slot with a larger inclination angle. At this point, the needle tooth 123 and the suture needle 13 are engaged. The suture needle 13 continues to advance clockwise following the needle tooth 123 and gradually passes through the target suture tissue until the reset member 122 is compressed to its limit. Figure 5B As shown in (a). When the control rope can no longer be pulled, the anti-retraction pin 142 on the right side engages in the first rear slot. Next, the operator releases the drive unit 121 again, and the compressed reset unit 122 provides a counter-clockwise force to the retraction pin 123. The slider 124 and the retraction pin 123 retract counter-clockwise, and the infeed pin 123 on the right side engages in the first front slot, as shown. Figure 5B As shown in (b), the anti-retraction needle tooth 142 located on the right side engages in the first back groove, preventing the suture needle 13 from retracting.

[0078] Then, the operator pulls the control rope for the third time, causing the right-side toothed needle 123 to engage with the suture needle 13, which continues to move clockwise and pass through the target suture tissue. After pulling the rope to its limit three times, as... Figure 5C As shown in (a), the anti-retraction toothed pin 142 on the left side is engaged in the third back groove of the suture needle. After the third release of the drive unit 121, as... Figure 5C As shown in (b), the slider 124 and the feed needle 123 move counterclockwise. The feed needle 123 on the left side engages in the fourth front slot, and the anti-retraction needle 142 on the left side engages in the third back slot, so the suture needle 13 will not retract.

[0079] Next, the operator pulls the control rope for the fourth time, causing the toothed needle 123, which is engaged with the left side of the fourth front slot, to continue driving the suture needle 13 clockwise until it reaches the compression limit of the reset piece 122. Figure 5D As shown in (a). At this time, the tip of the suture needle 13 passes through the target suture tissue and retracts into the groove 1121 of the second housing 112; the anti-retraction toothed needle 142 located on the left side engages in the second back groove of the suture needle. The fourth release drive 121, as shown... Figure 5D As shown in (b), the slider 124 and the feed needle 123 move backward counterclockwise. The feed needle 123 on the left side engages in the third front slot, while the anti-retraction needle 142 on the left side engages in the second back slot, so the suture needle 13 will not move backward.

[0080] Pulling the control rope a fifth time causes the toothed needle 123, which is engaged in the third front slot, to rotate the suture needle 13 clockwise back into the slide groove 1121 until it reaches the compression limit of the reset piece 122. Figure 5E As shown in (a). At this time, the anti-retraction tooth 142 located on the left side is engaged in the first back groove of the suture needle. The fifth release drive 121, as shown... Figure 5E As shown in (b), the slider 124 and the toothed needle 123 move backward counterclockwise, and the two toothed needles 123 are respectively engaged in the second front slot and the fourth front slot. The anti-retraction toothed needle 142 located on the left is engaged in the first back slot, so the suture needle 13 will not move backward.

[0081] Finally, the sixth pull on the drive component 121 reaches the compression limit of the reset component 122, causing the two feed needles 123, engaged in the second and fourth front slots, to continue driving the suture needle 13 forward until the tip of the suture needle approaches the exit end of the slide groove 1121. Figure 5F As shown in (a). At this point, the suture needle 13 drives the suture 131 through the tissue to be sutured, completing one suture. Meanwhile, the anti-retraction toothed needle 142 on the right side engages in the third back slot. Then, the sixth release of the drive unit 121, as shown... Figure 5F As shown in (b), the reset member 122 drives the slider 124 and the feed needle 123 to retract counterclockwise. The two feed needles 123 are respectively engaged in the first front slot and the third front slot, and the suture needle 13 does not retract. The suture needle 13 is fully inserted into the second housing, ready for the next suture.

[0082] In this embodiment, the compression displacement (i.e., reset displacement) of the reset member 122 is equal to the circumferential distance (referred to as slot spacing) between two adjacent slots 132 on the suture needle; while the circumferential distance between the two feed needles 123 is twice the slot spacing. This arrangement ensures that after each reset, at least one feed needle is engaged in one of the front slots of the suture needle, so that when the operating rope is pulled again, the feed needle and the suture needle can immediately form an engagement relationship, thereby immediately driving the suture needle 13 forward. However, the present invention does not limit this. In other embodiments, after reset, the feed needle may also be located between two front slots, in which case the feed needle is compressed upward by the suture needle. When the operating rope is pulled again, the compressed feed needle moves a distance along the surface of the suture needle until at least one feed needle is engaged in one of the front slots. For the two anti-retraction needles, it is only necessary to ensure that at any time after the drive member is pulled, one anti-retraction needle can be engaged in one of the back slots to prevent the suture needle from regressing.

[0083] The above six operations achieve one suture with the suture needle. Repeating these six steps allows for suturing of the target tissue or knotting of the suture thread. However, this invention does not limit the number of times the cord needs to be pulled during one suture. In other embodiments, the number of times the cord needs to be pulled during one suture can be adjusted by adjusting the compression displacement of the reset member and the spacing of the slots on the suture needle.

[0084] The drive element 121 can be tightened or released by operating the handle. However, the present invention is not limited in this respect. In other embodiments, the drive element 121 may also be other components capable of driving the slider movement.

[0085] On the other hand, the present invention also provides a treatment device comprising the aforementioned suture 1 and control handle 2, which is used in conjunction with an endoscope 200. The suture 1 is fixed to the tip 202 of the endoscope. The control handle 2 is fixed to the operating end 201 of the endoscope, and the drive member 121 of the suture is connected to the control handle 2. The control handle 2 controls the drive member 121 to control the advance of the suture needle 13.

[0086] In this embodiment, as Figure 6A As shown in Figure 11, the control handle 2 includes a handle housing 21, a control pulley 22, a clutch disc 23, and a lever 24. The control pulley 22 is disposed inside the handle housing 21, and the drive element 121 on the sewing machine is a control rope connected to the control pulley 22. The clutch disc 23 is detachably disposed on one side of the control pulley 22, and the side of the clutch disc 23 near the control pulley 22 has a retaining ring 231 that engages with the control pulley 22. The lever 24 is connected to the clutch disc 23 and is repositionably connected to the handle housing 21.

[0087] like Figure 11A and 11B As shown, the lever 24 is repositionably connected to the handle housing 21 via a tension spring 25. However, the present invention is not limited thereto. In other embodiments, the lever may also be provided with a torsion spring connected to the handle housing for repositioning.

[0088] In the control handle 2 provided in this embodiment, the clutch disc 23 and the control rope wheel 22 are detachable. When it is necessary to drive the suture needle 13 on the suture machine 1 forward, the clutch disc 23 is connected to the control rope wheel 22, and the two are linked together, tensioning the control rope. The operator pulls the lever 24, which drives the control rope wheel 22 to rotate through the clutch disc 23, thereby pulling the control rope on the suture machine 1. When the control rope is pulled to the limit position of the reset member 122, the control rope can no longer be pulled. At this time, the clutch disc 23 and the control rope wheel 22 are separated, and the control rope is in a slack state. Under the action of the reset member 122 on the suture machine, the slack control rope is pulled back with the slider 124. After separation, the clutch disc 23 is reset with the lever 24 under the action of the tension spring 25, and after reset, it is linked with the control rope wheel 22 again.

[0089] Specifically, such as Figure 6E As shown, the handle housing 21 includes a front housing 211, a middle housing 212, and a rear housing 213 arranged sequentially. The pull rod 24 is connected to the rear housing 213 via a tension spring 25. The rear axle of the clutch disc 23 passes through the middle housing 212 and is sleeved on the pull rod 24. Four compression springs 26 are arranged between the clutch disc 23 and the middle housing 212. The front side of the clutch disc 23 engages with the operating rope wheel 22, and the front axle of the clutch disc 23 passes through the operating rope wheel 22 and the front housing 211 respectively. When the drive member 121 is in the driving state, the four compression springs 26 push the clutch disc 23 to engage the clutch disc 23 with the operating rope wheel 22. When the drive member can no longer be pulled, the four compression springs 26 are compressed by pressing the front axle of the clutch disc 23 on the front housing 211. The clutch disc 23 separates from the operating rope wheel 22 axially, and the operating rope is slack. The reset member 122 on the sewing machine pulls back the slack drive member 121 via the slider 124. Finally, the lever 24 is released, and under the action of the tension spring 25, the lever 24 drives the clutch disc 23 to reset. However, the present invention does not limit the number of compression springs; nor does it limit the method of clutch disc disengagement.

[0090] The clutch disc 23 not only enables the control pulley 22 to follow the rotation of the pull rod 24, but also limits the control pulley 22 to prevent it from rotating counterclockwise. Furthermore, the clutch disc 23 and the control pulley 22 engage through a toothed meshing mechanism, fully utilizing mechanical principles to increase torque and reduce the effort required to pull the rod 2. Preferably, in this embodiment, the control pulley 22 has a groove ring 224 corresponding to the toothed ring 231, and during engagement, the teeth on the toothed ring 231 insert into the grooves on the groove ring 224. However, this invention does not limit this. In other embodiments, the control pulley may also have protruding teeth that engage with the toothed ring. In this embodiment, such as... Figures 7 to 9As shown, the control handle 2 also includes a control rope fixing member 27 disposed within the control rope wheel 22. The control rope, serving as the drive member 121, is connected to the control rope wheel 22 via the control rope fixing member 27. The control rope fixing member 27 includes an arc-shaped pin 271 and a pin spring 272. The arc-shaped pin 271 is connected to the inside of the control rope wheel 22 via the pin spring 272. The control rope wheel 22 has a side hole 221 and a pin groove 223. The drive member 121 extends into the control rope wheel 22 through the side hole 221 and is fitted onto the arc-shaped pin 271. This arrangement ensures that the drive member 121 will not detach from the control rope wheel 22 during pulling. When fixing the drive member 121, the operator first pulls the arc-shaped pin 271 clockwise along the pin groove 223; then, the drive member 121 is inserted into the control rope wheel 22 through the side hole 221, with the fixing ring at the front end of the drive member 121 aligned with the end of the arc-shaped pin 271. Afterwards, the arc-shaped pin 271 is released, and the pin spring 272 drives the arc-shaped pin 271 to reset along the pin groove 223, with the front end of the arc-shaped pin 271 passing through the fixing ring at the front end of the control rope wheel 22. To facilitate viewing the fixing state of the drive member 121, in this embodiment, the control rope wheel 22 also has an observation hole 222. The arrangement of the control rope fixing member 27 allows the drive member 121 to change its direction along the arc-shaped control rope wheel side within the control handle 2, greatly reducing the resistance of the drive member 121's operation, making it very easy to pull back the lever with a finger and very convenient to operate. However, this invention does not impose any limitations on this.

[0091] Furthermore, in this embodiment, the control handle 2 also includes a guide cylindrical pin 28 disposed on one side of the control rope wheel 22 and used to guide the drive member 121. The drive member 121 passes around the guide cylindrical pin 28 and enters the side hole 221. However, the present invention does not limit this in any way.

[0092] After installation, due to the different models of endoscopes being matched, the length of the drive component 121 residing outside the control wheel 22 may vary, potentially resulting in excessive allowance and causing the drive component 121 to be in a slack state. At this time, press the clutch disc 23 to separate the clutch disc 23 from the control wheel 22, and then rotate the control wheel 22 counterclockwise to tighten the excess drive component 121 inside the control wheel 22; after tightening, release the clutch disc 23, and the clutch disc 23 will engage with the control wheel 22.

[0093] In this embodiment, both the front shell 211 and the rear shell 213 are square structures. Compared to a circular shell, the square shell structure allows for smaller internal components, resulting in a smaller overall size and thus smaller packaging, significantly reducing costs. Furthermore, the square shell reduces the distance between the pull rod 24 and the operator's thumb, decreasing the range of finger spread and gripping, lowering operational resistance, conforming to hand ergonomics, and reducing the likelihood of tendon sheath, ligament, or muscle damage in the operator's hand. This leads to more relaxed operation, more accurate suturing, faster surgery, longer reattachment, and slower finger fatigue. However, this invention does not impose any limitations on the structure of the handle shell.

[0094] On the other hand, the present invention also provides a treatment device, including the aforementioned treatment apparatus and endoscope 200. The treatment apparatus is used in conjunction with the endoscope 200, and includes the aforementioned suture device 1 and control handle 2.

[0095] In this embodiment, the treatment device further includes an external forceps tube 3, a connecting ring 4, a push-knot tube 5, a snare ring, and a hook forceps. The connecting ring 4 is fitted onto the endoscope 200. The diameter of the connecting ring 4 is variable and can be composed of self-locking teeth and / or chains and / or pins and / or combinations thereof to accommodate installation on endoscope tips of different diameters; however, the present invention does not limit this. The snare ring 4 performs tissue cutting at the tip of the endoscope 200, the hook forceps performs tissue clamping or suture hooking at the tip of the endoscope 200, and the push-knot tube pushes forward longitudinally and horizontally to help tighten the knot.

[0096] Specifically, such as Figure 12 As shown, the external forceps tube 3 is fixed to the flexible tubing of the endoscope 200 via a connecting ring 4, and the push-joint tube 5 is installed in the inner hole of the external forceps tube 3. Another connecting ring 4 is fitted onto the tip 202 of the endoscope 2, and the suture device 1 is fitted onto the connecting ring 4 to fix the suture device 1 to the tip 202 of the endoscope 200. The head end 31 of the external forceps tube 3 is inserted into the suture device 1. In this embodiment, the connecting ring 4 serves both to fix the external forceps tube 3 and the endoscope 200, and to increase the connection strength of the tip 202 of the endoscope 200, thereby allowing the suture device 1 to be firmly fixed to the tip 202 of the endoscope 200. In this embodiment, the connecting ring 4 is made of silicone and is elastic. However, the present invention does not impose any limitations on the material of the connecting ring.

[0097] Next, the control handle 2 is installed onto the operating part of the proximal end 201 of the endoscope, and the control handle 2 and the endoscope 200 are securely fixed together by the handle fastener. If the handle fastener is a strap, the control handle 2 and the endoscope 200 are fastened by wrapping the strap around the endoscope 200. However, the present invention does not impose any limitation on the shape of the handle fastener; any component that can achieve the fixing function can be used as the handle fastener.

[0098] Turn on the endoscope. Under the monitor, adjust the direction of the stapler 1 so that the C-shaped opening faces downwards. After adjusting the position, tighten the stapler until the stepped surface of the stapler's collar is firmly against the tip of the endoscope.

[0099] Insert the hook clamp into the endoscope's insertion port, pass through the clamp channel to the endoscope's tip 202, then clamp the suture actuator's drive member 121, pulling the drive member 121 near the tip 202 into the clamp channel. Next, remove the hook clamp and pull it out of the insertion port, thereby bringing one end of the drive member 121 out of the insertion port. Then, insert the brought-out drive member 121 into the side hole 221 of the control rope wheel 22 on the control handle 2, and then fix it to the control rope fixing member 27.

[0100] The snare is used to cut tissue at the tip of the endoscope, or to cut tissue by electric current. The target tissue is then sutured using the suture device provided in this embodiment. The snare can be inserted through the endoscope's own channels or through external channels; no limitation is made here.

[0101] The hook forceps are used at the tip of the endoscope to grasp tissue or pull sutures, and finally clamp both ends of the suture to complete the knotting action. The knot pusher is pushed forward longitudinally at the tip of the endoscope and horizontally helps to tighten the knot. The hook forceps and knot pusher can be inserted through the endoscope's own clamping channel or through an external clamping channel, without any limitation. In actual use, two hook forceps or knot pushers can be inserted simultaneously through two clamping channels, or only one hook forceps or knot pusher can be used. In this embodiment, the tip of the hook forceps is a clamp-shaped device with hooks, and the knot pusher is 500-2500mm long, with an inner diameter of 0.5-3.5mm and a wall thickness of 0.05-2.50mm, and is made of medical-grade polyamide or polytetrafluoroethylene and other polymer materials. However, the present invention does not impose any limitations on this.

[0102] The treatment device and equipment provided in this embodiment, through the use of snares, suture devices, hook forceps, and knot-pushing tubes, can achieve various functions such as tissue cutting, suturing, and knot tying. Furthermore, the treatment device and equipment provided in this embodiment may also include bio-adhesive, sealing adhesive, scaffolds, anastomotic staples, and anastomotic clips, thereby achieving functional diversification.

[0103] In another embodiment, the endoscope can be a dual-channel endoscope. In this case, there is no need to install an external channel tube. Because the endoscope has two channels, it is only necessary to insert the push-joint tube into the empty channel.

[0104] The following describes how the suture device of the present invention performs suturing.

[0105] First, insert the hook forceps into the insertion port of the endoscope 200, pass through the forceps channel to the tip 202 of the endoscope, and then locate and clamp the suture 131. Insert another hook forceps into the push-knot tube 5, reach the tip 202 of the endoscope, clamp the edge of the target suture tissue, and pull back to center the target suture tissue in the C-shaped opening of the suture device. Next, pull the lever 24 to advance the suture needle 13. When the needle reaches the limit position of the reset member 122, press the front shaft of the clutch disc 23 on the control handle 2 to release the drive member 121, and the needle advance assembly 12 will retract under the action of the reset member 122. Then repeat the above steps until the suture needle 13 rotates 360° within the groove 1121 and returns to the initial position. Repeat the above steps to perform suturing continuously.

[0106] Next, release the hook clamps holding the end of suture 131. After the suture needle 13 passes and a half-knot is tied, quickly move the clamps to the front of the end of suture 131 and clamp it again. Tighten both hook clamps while observing through the monitor. Use the push-knot tube 5 to gradually push the knot longitudinally and horizontally to achieve a complete knot. To ensure a secure knot, repeat the knotting operation in this section to complete a triple knot. Remove the push-knot tube 5 and both hook clamps. Insert the endoscope scissors into the empty or external clamping channel of the endoscope and cut the suture. After all suturing is completed, remove the endoscope and auxiliary tools, and remove the suture device.

[0107] Example 2

[0108] This embodiment is basically the same as Embodiment 1 and its variations, except that: the installation position of the reset piece 122 inside the needle insertion assembly 12 is different, the upper shell is no longer set inside the needle insertion assembly 12, and the extension and retraction method of the needle insertion teeth 123 is different.

[0109] Specifically, in this implementation, such as Figure 14 As shown, the bottom of the slider 124 has an arc-shaped receiving groove 1420. The reset member 122 is disposed in the receiving groove 1240 and is limited between the slider 124 and the suture needle 13. One end of the reset member 122 is connected to the side wall of the receiving groove 1240, and the other end is connected to the inner wall of the slide groove 1121 of the second housing 112. The top cover 126 covers the second housing 112. Similarly, the first housing 111 is integrally formed and connected to the second housing 112.

[0110] In this embodiment, the reset member 122 is disposed within the receiving groove 1240, and the bottom wall of the slider 124 limits the deformation direction of the reset member 122, ensuring that the reset member 122 deforms along the circumferential direction of the slide groove 1121. Compared with the embodiment that uses an upper shell to accommodate the reset member, the receiving groove 1240 in this embodiment eliminates the need for an upper shell component on the suture, which greatly reduces the overall volume of the suture, achieving not only miniaturization but also significantly reducing manufacturing costs.

[0111] Furthermore, in this embodiment, the feed needle 123 is connected to the upper cover 126 via a feed needle spring 129. Specifically, the bottom end of the feed needle spring 129 engages with the groove of the suture needle 13, while the upper end of the feed needle 123 is connected to the feed needle spring 129. When the feed needle 123 engages with the groove of the suture needle 13, the feed needle spring 129 is in a naturally extended state; when the feed needle 123 moves along the surface of the suture needle, the feed needle spring 129 is compressed, and the feed needle 123 is in a contracted state. However, the present invention does not limit this in any way. In other embodiments, a feed needle spring can be used to achieve the extension and retraction of the feed needle.

[0112] Figures 16A-16F The diagram shows the anti-retraction needle assembly, suture needle, and needle insertion assembly of the suture device provided in Embodiment 1 of the present invention in different states during operation. Its movement states are the same as in Embodiment 1, and its suturing principle is also the same as in Embodiment 1.

[0113] Similarly, as in Embodiment 1, the anti-retraction needle assembly 14 also includes a lower housing 141, anti-retraction needle teeth 142, and anti-retraction needle tooth springs 143. The first housing 111 also has an anti-tangle sliding post 1113.

[0114] Example 3

[0115] This embodiment is basically the same as Embodiment 2 and its variations, except that the structure of the main shell 11' is different.

[0116] like Figures 17A to 20 As shown, the suture device also includes an external clamping tube 3'. The main housing 11' includes a first housing 111', a second housing 112', and a third housing 113'. The third housing 113' and the second housing 112' are disposed opposite to the first housing 111'. The external clamping tube 3' is connected to the first housing 111' to drive the first housing 111' and the second housing 112' to rotate relative to the third housing 113'.

[0117] In this embodiment, the first housing 111' and the second housing 112' are integrally formed, and the first housing 111' is rotatably sleeved on the tip of the third housing 113'. The first housing 111' has an anti-winding sliding post 1113'. However, the present invention does not limit this in any way. In other embodiments, the first housing and the second housing can also be fixedly connected by a connector.

[0118] like Figure 18 As shown, in this embodiment, the main housing 11' further includes a rotating gear 114', and the first housing 111' is rotatably connected to the third housing 113' via the rotating gear 114'. The external clamping tube 3' includes a clamping tube body 31' and a clamping tube drive gear 32'. The clamping tube body 31' is fitted onto the second channel 1112' on the first housing 111', and the clamping tube drive gear 32' meshes with the rotating gear 114'. The external clamping tube 3' drives the first housing 111' and the second housing 112' to rotate through the transmission of the clamping tube drive gear 32' and the rotating gear 114'. This configuration greatly facilitates the adjustment of the orientation of the C-shaped opening of the suture device inside the patient's body, especially in confined spaces, making it very convenient to use. However, this invention does not limit the transmission structure between the first housing and the external clamping tube, or the transmission between the external clamping tube and the clamping tube of the endoscope itself, or their relative movements. Other mechanical structures that can achieve synchronous linkage to drive the rotation of the second housing are within the protection scope of this invention.

[0119] In this embodiment, as Figure 18 and Figure 20As shown, the external clamping tube 3' also includes a positioning element 33', which locks the external clamping tube 3' to prevent it from rotating or to release the lock. Specifically, the positioning element 33' includes a positioning pin 331', a positioning pin spring 332', and a positioning pin pull rope 333'; the clamping tube drive gear 32' has multiple circumferential positioning holes 321', and one side of the second channel 1112' on the first housing 111' has a positioning element mounting portion 1114'. The upper end of the positioning pin 331' is fixed to the positioning element mounting portion 1114' by the positioning pin spring 332', and its lower end is opposite to the multiple circumferential positioning holes 321' on the clamping tube drive gear 32'. The positioning pin pull rope 333' is connected to the positioning pin 331'. Pulling the positioning pin cord 333' allows the positioning pin 331' to extend and retract along the positioning component mounting portion 1114', thereby engaging or disengaging the bottom end of the positioning pin 331' with the circumferential positioning hole 321'. When the positioning pin 331' engages with the circumferential positioning hole 321' of the clamp tube drive gear 32', the external clamp tube 3' is locked and cannot rotate. At this time, the first housing 111', the second housing 112', and the third housing 113' are fixed and do not rotate. When the positioning pin cord 333' is pulled up to disengage the bottom end of the positioning pin 331' from the circumferential positioning hole 321', the clamp tube drive gear 32' is unlocked, which can drive the first housing 111' and the second housing 112' to rotate 113' relative to the third housing. However, the present invention does not limit the location and structure of the positioning component. In other embodiments, the positioning component can also be located on the rotating gear 114', and the transmission relationship between the first housing and the external clamp tube can be achieved by locking or unlocking the rotating gear.

[0120] In this embodiment, the positioning pin pull rope 333' passes downward around the positioning member mounting part 1115', and then passes upward through the clamp tube body 31', thereby facilitating upward pulling of the positioning pin pull rope 333'. The positioning pin pull rope 333' can be fixed to the control handle or can be independently externally mounted on the control handle. The present invention does not impose any limitations on this.

[0121] In this embodiment, the drive teeth 32' of the clamping tube are also covered by a protective cover 34'. However, the present invention does not limit this in any way.

[0122] Example 4

[0123] For larger wounds or other target suture tissues, after inserting and exiting the needle into the target tissue on one side of the wound using the suture device of the present invention as described in the above embodiment, the C-shaped opening of the suture device is moved to the tissue on the opposite side of the larger wound or target tissue. The pull rod 24 is then engaged to allow the suture needle 13 to advance. When the needle reaches the limit position of the reset member 122, the front shaft of the clutch disc 23 on the control handle 2 is pressed to relax the drive member 121. Under the action of the reset member 122, the needle insertion assembly 12 retracts. The above steps are then repeated until the suture needle 13 rotates 360° within the groove 1121 and returns to the initial position. Repeating the above steps allows for continuous cross-suturing of larger wounds or other target suture tissues.

[0124] In summary, the suture device, treatment apparatus, and treatment equipment provided by this invention include a drive component, a reset component, and suture teeth within the needle insertion assembly. When the drive component moves the suture teeth, the reset component deforms synchronously; and when the drive component is released, the restoring force of the reset component resets the suture needle. This design allows the suture needle to advance using only the drive component, enabling the endoscopic operator to control the handle with one hand while continuously performing sutures with the other. Furthermore, the operation of a single component eliminates the need for the operator to look away from the handle, ensuring that the operator's attention remains focused on the endoscopic operation, thus guaranteeing the safety and continuity of the surgical procedure. This design greatly facilitates the adjustment of the C-shaped opening orientation of the suture device within the patient's body, enabling rapid, accurate, and well-aligned suture of the target tissue within the confined space.

[0125] Furthermore, the control handle utilizes a small clutch disc and the engagement of the control rope pulley to increase rotational torque, achieving miniaturization and cost reduction. Further, the use of the arc-shaped sidewall of the control rope pulley to pull the control rope significantly reduces resistance, making the lever operation easier, improving operator compliance, and greatly reducing damage to various components of the suture device, thus extending its lifespan. Moreover, the control handle reduces the distance between the lever and the web of the hand, minimizing finger spread and gripping range, conforming to hand ergonomics, and reducing the risk of tendon, ligament, or muscle damage. This results in more relaxed operation, more accurate suturing, faster surgery, longer suture reattachment, and less finger fatigue.

[0126] Although the present invention has been disclosed above by way of preferred embodiments, it is not intended to limit the present invention. Any person skilled in the art may make some modifications and refinements without departing from the spirit and scope of the present invention. Therefore, the scope of protection of the present invention shall be determined by the scope of protection claimed in the claims.

Claims

1. A stapler characterized by, The application relates to a suture device. The suture device comprises a main shell, a suture needle, a needle-advancing assembly and a needle-preventing assembly. The suture needle is slidably arranged in the main shell, and one end of the suture needle is connected with a suture thread, and the other end of the suture needle is a pointed end. The needle-advancing assembly is arranged in the main shell and comprises a single driving member, a reset member and two needle-advancing teeth. The two needle-advancing teeth are in separable engagement with the suture needle. The compression displacement of the reset member is equal to the distance between two adjacent clamping grooves on the suture needle. The circumferential distance between the two needle-advancing teeth is twice the distance between the clamping grooves.

2. The stapler of claim 1, wherein, The driving member acts on the engaged needle-advancing teeth and the suture needle to control the suture needle to advance and the reset member to deform.

3. The stapler of claim 1, wherein, When the driving member is released, the engagement between the needle-advancing teeth and the suture needle is released, and the reset member drives the needle-advancing teeth to reset.

4. The stapler of claim 1, wherein, After each reset, at least one needle-advancing tooth is engaged with the clamping groove of the suture needle to form the engagement between the needle-advancing teeth and the suture needle immediately when the driving member acts next time.

5. The stapler according to claim 1, wherein, Alternatively, the driving member acts on the needle-advancing teeth to make the needle-advancing teeth move relative to the suture needle and the reset member to deform.

6. A treatment device for use in conjunction with an endoscope, comprising: When the driving member is released each time, the needle-advancing teeth are engaged with the suture needle, the reset member drives the needle-advancing teeth to advance, and after reset, at least one needle-advancing tooth is engaged with the clamping groove of the suture needle and is disengaged from the suture needle when the driving member acts next time. The needle-preventing assembly is arranged in the main shell and is in separable engagement with the suture needle to prevent the suture needle from retreating. The main shell is provided with a sliding groove, the suture needle is arranged in the sliding groove, the needle-advancing assembly further comprises a sliding block arranged in the sliding groove and above the suture needle, the needle-advancing teeth are telescopically assembled in the sliding block, and the driving member and the reset member are connected to the sliding block. The two needle-advancing teeth are respectively assembled at two ends of a sliding block body of the sliding block. The driving member is a control rope acting on the needle-advancing teeth, and the reset member is a reset spring or a metal spring sheet acting on the needle-advancing teeth. The needle-advancing assembly further comprises an upper shell and an upper cover which are sequentially covered on the main shell, a containing cavity is formed between the upper shell and the upper cover, the sliding block comprises the sliding block body and a sliding block connecting part, the sliding block connecting part sequentially passes through the upper shell and the upper cover, the reset member is arranged in the containing cavity, one end of the reset member is connected to the sliding block connecting part, the other end of the reset member is connected to the upper shell or the upper cover, and the driving member is connected to the upper end of the sliding block connecting part. The bottom of the sliding block is provided with a containing groove, the reset member is arranged in the containing groove and is limited between the sliding block and the suture needle, one end of the reset member is connected to the side wall of the containing groove, and the other end of the reset member is connected to the inner wall of the sliding groove of the main shell. The suture device further comprises an external pincer channel pipe, the main shell comprises a first shell, a second shell and a third shell, the first shell is connected with the second shell, the third shell is arranged in the first shell in relative rotation with the second shell, the pincer channel pipe is drivingly connected to the first shell to drive the relative rotation between the first shell, the second shell and the third shell, and the orientation and position of the C-shaped opening of the suture device are arbitrarily converted. The treatment device comprises a suture device fixed to the front end of an endoscope. The suture device comprises a main shell, a suture needle, a needle-advancing assembly and a needle-preventing assembly. The needle insertion assembly is arranged in the main housing and includes a single driving member, a reset member, and two needle insertion teeth in separable engagement with the suture needle. The compression displacement of the reset member is equal to the distance between adjacent grooves on the suture needle. The circumferential distance between the two needle insertion teeth is twice the distance between the grooves. The driving member acts on the engaged needle insertion teeth and the suture needle to control the advancement of the suture needle and cause the reset member to deform. When the driving member is released, the engagement between the needle insertion teeth and the suture needle is released, and the reset member drives the needle insertion teeth to reset. After each reset, at least one needle insertion tooth is engaged with the groove of the suture needle to form an engagement relationship between the needle insertion teeth and the suture needle immediately when the driving member is actuated again. Alternatively, the driving member acts on the needle insertion teeth to cause them to move relative to the suture needle and the reset member to deform. When the driving member is released each time, the needle insertion teeth are engaged with the suture needle, the reset member drives the needle insertion teeth and the suture needle to advance, and after resetting, at least one needle insertion tooth is engaged with the groove of the suture needle and is disengaged from the suture needle when the driving member is actuated again. The anti-needle retraction assembly is arranged in the main housing and is in separable engagement with the suture needle to prevent the suture needle from retracting. The main housing has a sliding groove, and the suture needle is arranged in the sliding groove. The needle insertion assembly further includes a sliding block arranged in the sliding groove above the suture needle. The needle insertion teeth are telescopically assembled in the sliding block. The driving member and the reset member are both connected to the sliding block. The two needle insertion teeth are respectively assembled at both ends of the sliding block body of the sliding block. The control handle is fixed to the operating end of the endoscope. The driving member of the suturing device is connected to the control handle, and the control handle controls the driving member to control the advancement of the suture needle.

7. The treatment device of claim 6, wherein, The control handle includes: a handle housing; a control rope wheel arranged in the handle housing. The driving member of the suturing device is a control rope connected to the control rope wheel; a clutch disc arranged on one side of the control rope wheel in a separable manner. The clutch disc has a toothed ring on the side close to the control rope wheel, which is in engagement with the control rope wheel; a pull rod connected to the clutch disc and resettable connected to the handle housing.

8. The treatment device of claim 6, wherein, The treatment device further includes a connecting ring, a snare ring, a hook forceps, and a knot pushing tube. The connecting ring is sleeved on the endoscope. The snare ring performs a cutting action on the tissue at the distal end of the endoscope. The hook forceps performs a clamping action on the tissue or a hooking action on the suture line at the distal end of the endoscope.

9. A treatment device, characterized by It includes: an endoscope; a treatment device used in cooperation with the endoscope. The treatment device includes a suturing device and a control handle. The suturing device is fixed to the distal end of the endoscope. The suturing device includes: a main housing; a suture needle slidably arranged in the main housing. One end of the suture needle is connected to a suture line, and the other end of the suture needle is a sharp end. The needle insertion assembly is arranged in the main housing and comprises a single driving member, a reset member and two needle insertion teeth in separable engagement with the suture needle; the compression displacement of the reset member is equal to the distance between two adjacent clamping grooves on the suture needle; the circumferential distance between the two needle insertion teeth is twice the distance between the clamping grooves; the driving member acts on the engaged needle insertion teeth and the suture needle to control the advancement of the suture needle and the deformation of the reset member; when the driving member is released, the engagement between the needle insertion teeth and the suture needle is released, and the reset member drives the needle insertion teeth to reset; after each reset, at least one needle insertion tooth is engaged with the clamping groove of the suture needle to form an engagement relationship between the needle insertion teeth and the suture needle immediately when the driving member is actuated next time; alternatively, the driving member acts on the needle insertion teeth to release the engagement relationship to move the needle insertion teeth relative to the suture needle and deform the reset member; when the driving member is released each time, the needle insertion teeth are engaged with the suture needle, the reset member drives the needle insertion teeth and the suture needle to advance, and after resetting, at least one needle insertion tooth is located in the clamping groove of the suture needle and is disengaged from the suture needle when the driving member is actuated next time; The anti-needle-retraction assembly is arranged in the main housing and forms separable engagement with the suture needle to prevent the suture needle from retracting; The main housing has a sliding groove, the suture needle is arranged in the sliding groove, the needle insertion assembly further comprises a sliding block arranged in the sliding groove and located above the suture needle, and the needle insertion teeth are telescopically assembled in the sliding block, and the driving member and the reset member are connected to the sliding block; The two needle insertion teeth are respectively assembled at two ends of the sliding block body of the sliding block; The control handle is fixed to the operation end of the endoscope, the driving member of the suture device is connected to the control handle, and the control handle controls the driving member to control the advancement of the suture needle.

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