Assembly type disposable endoscopic imaging intrauterine device anti-falling suture fixing device

Abstract

The invention relates to the technical field of intrauterine device suturing, in particular to an assembly type disposable endoscopic imaging intrauterine device anti-falling suturing fixing device which comprises a handle. The external assembly is arranged on the outer side of the handle; the power assembly is arranged in the handle and comprises a knob and a push block; the disposable assembly is arranged on the side wall of the handle and comprises a far-end tip and a catheter module. A split type quick-assembly structure is adopted, quick locking and butt joint can be achieved, the suture needle can be abandoned and replaced after being used, cross infection is effectively avoided, the nickel-titanium alloy memory suture needle is adopted as the core, the suture needle is linear in the limiting cylinder, J-shaped bending is recovered outside the limiting cylinder, an accurate semicircular puncture channel is formed, physical depth limiting design is matched, the puncture depth is safe and controllable, and a PEEK lock catch structure is matched. The device is used in cooperation with automatic line catching and resetting of the line pulling hook, integrated operation of puncturing, line catching and locking is continuously achieved twice, traditional manual knotting is replaced, fixing is firm, uterine contraction fatigue is resisted, and loosening is avoided for a long time.

Description

Technical Field

[0001] This invention relates to the field of intrauterine device (IUD) suturing technology, and more particularly to a prefabricated disposable endoscopic imaging IUD anti-dislodgement suturing and fixation device. Background Technology

[0002] Adenomyosis, abnormal uterine bleeding, and other gynecological diseases have a high clinical incidence. Patients often present with worsened dysmenorrhea, increased menstrual flow, and abnormally enlarged uterus. The levonorgestrel intrauterine sustained-release system (Mirena) is a first-line conservative treatment option that can achieve both contraception and treatment effects and is widely used in clinical practice. However, due to factors such as abnormal uterine cavity morphology, increased intrauterine pressure, and frequent uterine contractions, the intrauterine device expulsion rate in these patients is as high as 15%-60%. Expulsion directly leads to treatment failure, significantly increasing patient suffering, the cost of repeated treatment, and doctor-patient conflicts. It has become a common problem that urgently needs to be solved in gynecological clinical practice. Currently, commonly used fixation methods in clinical practice are mainly divided into two categories: traditional hysteroscopic suturing and blind puncture fixation, both of which have obvious drawbacks. Traditional hysteroscopic suturing requires expensive equipment such as large hysteroscopes, light sources, and display systems. The operation is complex, relies on the skills of experienced physicians, takes too long, and requires operating room resources, resulting in high overall costs and making it difficult to popularize in primary hospitals. Blind puncture fixation relies on external scales to estimate depth without real-time visual guidance. In cases where the uterine wall is of uneven thickness, uterine perforation is very likely to occur, leading to serious complications such as massive bleeding, bladder or bowel damage. It has poor safety. At the same time, the suture structure is prone to tearing of the myometrium, resulting in greater trauma during removal. In addition, existing suturing instruments generally suffer from problems such as cumbersome operation, unreliable fixation, and insufficient minimally invasiveness. Traditional manual knot tying is difficult to ensure tightness in the narrow uterine cavity, and is prone to loosening or cutting tissue. While PEek lock products have a certain locking ability, they lack visual guidance and still have the risk of inaccurate positioning and fixation failure. Furthermore, most instruments are designed as a whole, which cannot separate consumables from the equipment, resulting in high usage costs and difficulties in aseptic control. Summary of the Invention

[0003] The purpose of this invention is to solve the problems in the background art by proposing a prefabricated disposable endoscopic imaging intrauterine contraceptive device to prevent it from falling off and to fix it with sutures.

[0004] To achieve the above objectives, the present invention adopts the following technical solution: A prefabricated disposable endoscopic imaging intrauterine contraceptive device for preventing dislodgement and suturing fixation, including a handle; External components, located on the outside of the handle; The power unit, located inside the handle, includes a knob and a push block; A disposable component, disposed on the side wall of the handle, includes a distal tip and a conduit module, which are fixedly connected. An observation tube, a support ring, a support tube, and two flow channels are fixedly installed inside the disposable component. The two flow channels are symmetrically distributed on both sides of the observation tube and the support tube. The observation tube is located above the support tube, and the support ring is fixedly fitted onto the outside of the support tube. The suture assembly, located inside the support tube, includes a suture needle, a suture thread, and a peek lock. The suture thread and the peek lock correspond one-to-one. One end of the suture thread is fixedly connected to the side wall of the peek lock, and the other end is made into a loop and sleeved on the outside of the tip of the suture needle. The fixing components, located inside the support cylinder, include a pull hook, a pressure plate, and a sliding plate.

[0005] Preferably, the external components include a display, a suction container, and a saline bag; The side wall of the display is provided with a connecting line for transmitting data. The input end of the suction can and the output end of the saline bag are both provided with connecting tubes. The two connecting tubes pass through the side wall of the handle to the inside of the handle and are fixedly connected to the two flow channels. The flow channel corresponding to the saline bag is the inlet pipe, and the flow channel corresponding to the suction can is the outlet pipe.

[0006] Preferably, the side wall of the handle is integrally formed with a branch tube, the outer side of the branch tube is threaded, and a fastening nut is fitted on the outer side of the disposable component, the fastening nut being threadedly engaged with the branch tube. A push rod is fixedly installed at the bottom of the push block. The push rod is slidably installed inside the handle. A fastening nut is sleeved on the outer side of one end of the push rod inside the branch pipe. A second push rod is slidably installed inside the support cylinder. The end of the second push rod is threaded, and the second fastening nut is threadedly connected to the end of the second push rod. The end of the push rod two is located on the outside of the conduit module.

[0007] Preferably, an endoscope is fixedly installed inside the observation tube, and a wire is provided on the side wall of the endoscope. The wire and the connecting wire are fixedly connected. An electronic control button is provided on the side wall of the handle. The electronic control button controls the image acquisition and real-time transmission of the endoscope. The branch pipe has a quick-connect groove inside, the wire is located inside the quick-connect groove, and the quick-connect groove is connected to the connecting wire.

[0008] Preferably, a stop block is fixedly installed on the top of the inner wall of the support cylinder; The support cylinder has an integrally formed support block inside, the PEek lock slides above the support block, the top of the support block has a sliding groove, and the sliding groove has a spring locking tooth inside. Each of the Peek locks has a second locking groove at its bottom, and the spring locking teeth slide into the inside of the second locking groove. The side wall of the Peek latch has a locking groove. The side wall of the pull hook is integrally formed with a fixing rod, which is fixedly connected to the push rod. The side wall of the fixing rod is provided with a spring locking rod, which is slidably inserted into the inside of the locking groove.

[0009] Preferably, the sidewall of the tip of the suture needle has two hook grooves, which correspond to the annular shape of the suture thread; The pull hook is slidably inserted into the inside of the hook groove; A limiting cylinder is fixedly installed inside the support block. Both the limiting cylinder and the side wall of the support block are provided with grooves, and the stitching line is located inside the grooves.

[0010] Preferably, the pressure plate is slidably installed inside the support cylinder, the pressure plate is located above the PEek lock, and a spring is provided between the pressure plate and the support ring; The slide plate is slidably installed inside the support cylinder, and the slide plate is located above the pressure plate; The top of the pressure plate is integrally formed with protruding teeth, and the bottom of the sliding plate is provided with tooth grooves that mesh with the protruding teeth.

[0011] Preferably, a slider is slidably mounted on the outer side of the push rod one, and the two ends of the slider are respectively integrally formed with support rod one and support rod two; The end of the second support rod is located inside the first support tube and abuts against the sliding plate; A rack is fixedly installed on the side wall of the support rod. A gear is fixedly installed at the bottom of the knob, and the gear engages with a rack for transmission.

[0012] Compared with existing technologies, the beneficial effects of this invention are as follows: This invention employs a split, quick-assembly structure. Disposable components and the handle can be quickly locked together, ensuring efficient assembly and reliable interface sealing. It is disposable and replaceable after use, effectively preventing cross-infection. The device integrates an endoscopic imaging system, providing full visual guidance throughout the procedure. It precisely locates the suture site and clearly observes the entire puncture and fixation process, completely eliminating the risks of uterine perforation and tissue damage caused by blind puncture. The core uses a nickel-titanium alloy memory suture needle, which forms a straight line inside the limiting tube and automatically recovers a J-shaped curve outside, creating a precise semi-circular puncture channel. Combined with a physical depth-limiting design, the puncture depth is safe and controllable. It features two PEEK locking structures and a pull hook for automatic suture retrieval and repositioning, achieving integrated puncture, suture retrieval, and locking operations in two consecutive steps, replacing traditional manual knotting. This provides a firm fixation, resists uterine contraction fatigue, and prevents long-term loosening. The dual-channel tubing can simultaneously perform saline flushing and negative pressure suction, maintaining a clear surgical field. It also supports electrocautery for heating and clamping the suture, offering strong adaptability, significantly improving surgical efficiency and safety, and reducing medical costs. Attached Figure Description

[0013] Figure 1 This is a three-dimensional structural diagram of the present invention; Figure 2 This is a cross-sectional view of the overall structure of the present invention; Figure 3 For the present invention Figure 2 Enlarged schematic diagram of the structure at point A; Figure 4 For the present invention Figure 2 Enlarged schematic diagram of the structure at point B; Figure 5 For the present invention Figure 2 Enlarged schematic diagram of the structure at point C; Figure 6 This is a schematic diagram of the structure of the distal tip in this invention; Figure 7 This is a cross-sectional view of the internal structure of the support cylinder in this invention; Figure 8 For the present invention Figure 7 Enlarged schematic diagram of the structure at point D; Figure 9 For the present invention Figure 7 Enlarged schematic diagram of the structure at point E; Figure 10 This is a cross-sectional view of the internal structure of the support cylinder in this invention; Figure 11 This is a schematic diagram of the stitching assembly in this invention; Figure 12 This is a schematic diagram of the pressure plate in the present invention; Figure 13 This is a schematic diagram of the skateboard structure in this invention.

[0014] In the diagram: 1. Handle; 11. Display; 12. Connecting cable; 121. Suction container; 122. Saline bag; 123. Hook; 124. Connecting tube; 13. Electrical control button; 131. Knob; 132. Push block; 133. Gear 1; 134. Push rod 1; 135. Slider; 136. Support rod 1; 137. Rack 1; 138. Support rod 2; 139. Fastening nut 2; 14. Branch tube 1; 141. Fastening nut 1; 142. Quick-connect groove; 21. Distal tip; 211. Catheter module; 212. Observation tube; 213. Support ring; 2 14. Flow channel tube; 215. Endoscope; 216. Wire; 217. Push rod II; 218. Slide plate; 22. Support cylinder; 221. Stop block; 222. Support block; 223. Limiting cylinder; 224. Wire groove; 225. Slide groove I; 23. Suture needle; 231. Suture thread; 232. Peek lock; 233. Lock groove I; 234. Hook groove; 235. Lock groove II; 236. Spring lock tooth; 24. Fixing rod; 241. Spring lock rod; 242. Pull hook; 31. Pressure plate; 311. Spring I; 312. Convex tooth; 313. Tooth groove. Detailed Implementation

[0015] The technical solutions of the present invention will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments.

[0016] In the description of this invention, it should be understood that the terms "upper", "lower", "front", "rear", "left", "right", "top", "bottom", "inner", "outer", etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are only for the convenience of describing this invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this invention.

[0017] The intrauterine device suture fixation device in the related technology has at least the following problems when in use: First, existing suturing instruments generally suffer from drawbacks such as cumbersome operation, unreliable fixation, insufficient minimally invasiveness, and high overall cost. Secondly, traditional manual knot tying is difficult to maintain tightness within the narrow uterine cavity, easily leading to loosening or cutting of tissue. While PEEK-type products have a certain locking ability, they lack visual guidance and still pose risks of inaccurate positioning and fixation failure. In addition, most instruments are designed as a single unit, which makes it impossible to separate consumables from the equipment, resulting in high usage costs and difficulties in aseptic control.

[0018] To address the aforementioned technical problems, this application provides a prefabricated disposable endoscopic imaging intrauterine contraceptive device with anti-dislodgement suturing and fixation, thereby solving the problems mentioned above.

[0019] Reference Figure 1 - Figure 13 As shown, a prefabricated disposable intrauterine device (IUD) anti-dislodgement suture fixation device for endoscopic imaging includes a handle 1, an external component disposed on the outside of the handle 1, a power component disposed inside the handle 1 including a knob 131 and a push block 132, a disposable component disposed on the side wall of the handle 1 including a distal tip 21 and a catheter module 211, which are fixedly connected. The disposable component internally houses an observation tube 212, a support ring 213, a support tube 22, and two flow channels 214, symmetrically distributed on both sides of the observation tube 212 and the support tube 22. The observation tube 212 is located above the support tube 22, and the support ring 213 is fixedly fitted onto the outside of the support tube 22. A suture component disposed inside the support tube 22 includes a suture needle 23, a suture thread 231, and a PEEK lock 232. The suture needle 23 is made of nickel-titanium alloy and has shape memory properties. The tip of the suture needle 23... One side is pre-designed as an arc shape, which can be a "J" shaped bend, an elliptical bend, or a semi-circular bend, etc. It can automatically recover the predetermined bending shape under body temperature to ensure that the puncture path is precise and controllable. The suture 231 and the peek buckle 232 correspond one-to-one. The inner walls of the corresponding upper and lower sides of the peek buckle 232 are provided with staggered locking teeth. One end of the suture 231 is fixedly connected to the side wall of the peek buckle 232, and the other end is set as a ring and is sleeved on the outside of the tip of the suture needle 23. The outside of the tip of the suture needle 23 is provided with a ring groove. The ring end of the suture 231 is sleeved in the inside of the ring groove. The fixing component is set inside the support cylinder 22, including the pull hook 242, the pressure plate 31 and the slide plate 218. The bottom of the pressure plate 31 only squeezes the peek buckle 232. The bottom of the pressure plate 31 matches the top of the peek buckle 232. The pressure plate 31 with the corresponding structure can be replaced according to the distribution of the locking teeth inside the peek buckle 232. During use, after securing the disposable components and handle 1, the operator sutures and fixes the Mirena. When the suture assembly has a suture 231 and a PEek lock 232, the operator pushes the push block 132. The push block 132 drives the suture assembly and fixation assembly to the suture position. After the suture needle 23 moves out of the support tube 22, the suture needle 23 automatically deforms under the memory effect of the nickel-titanium alloy to form a "J"-shaped hook structure and performs a circular puncture on the tissue. As the suture needle 23 completes the puncture, the suture 231 wraps around the outside of the human tissue and the Mirena side wall support rod, and the pull hook 242 hooks the suture. When the loop end of the suture 231 is closed, the worker pulls the push block 132, causing the suture hook 242 to pull the loop end of the suture 231 into the interior of the peek lock 232. The suture needle 23 is straightened by the contact of the internal structure of the support tube 22. After the suture assembly is reset, the worker rotates the knob 131, causing the fixing component to squeeze the outermost peek lock 232, so that the peek lock 232 clamps the internal suture 231. At this time, the worker gently pushes the push block 132, causing the loop end of the suture 231 to disengage from the suture hook 242, and the suture fixing of the Mirena side wall support rod is completed. When fixing the suture 231, an electrocautery knife can also be used. After the suture assembly is reset, the operator inserts the electrocautery knife structure between the peek lock 232 and the human tissue (where the suture 231 overlaps), and then activates the electrocautery knife structure to use the electrocautery knife to heat and clamp and cut the suture 231 to complete the fixation. When using an electrocautery knife for fixation, the PEek lock 232 only fixes one end of the suture 231. It can be a fixing block, which can achieve the same effect by fixing one end of the suture 231. Alternatively, it can be replaced with other structures that have the same fixing effect on one end of the suture 231.

[0020] like Figure 1 As shown, the external components include a display 11, a suction container 121, and a saline bag 122. The side wall of the display 11 is provided with a connecting cable 12 for transmitting data. The saline bag 122 is filled with physiological saline. The input end of the suction container 121 and the output end of the saline bag 122 are both provided with connecting tubes 124. The two connecting tubes 124 pass through the side wall of the handle 1 to the inside of the handle 1 and are fixedly connected to two flow channels 214. The flow channel 214 corresponding to the saline bag 122 is the inflow tube, and the flow channel 214 corresponding to the suction container 121 is the outflow tube. The side wall of the handle 1 is fixedly installed with a hook 123, and the saline bag 122 is hung on the hook 123. During the suturing process, if saline solution is needed, the staff can directly squeeze the saline bag 122, so that the saline solution inside the saline bag 122 is guided to the area to be used through the connecting tube 124 and the flow channel tube 214 (inflow tube). Alternatively, a water pump can be installed inside the handle 1, so that the input end of the water pump is fixedly connected to the connecting tube 124 of the saline bag 122, and the output end of the water pump is fixedly connected to the flow channel tube 214 (inflow tube). The water pump can precisely control the saline flow rate and velocity to adapt to different intraoperative irrigation needs. The suction canister 121 is connected to a negative pressure pump (built into the handle 1). After the negative pressure pump is started, it is guided through the connecting tube 124 and the flow channel tube 214 (outflow tube) to continuously suck the exudate or irrigation waste from the surgical area into the suction canister 121. Saline irrigation and negative pressure suction can be performed simultaneously.

[0021] like Figure 1 and Figure 4 As shown, the side wall of the handle 1 is integrally formed with a branch tube 14. The outer side of the branch tube 14 is threaded. The outer side of the disposable component is fitted with a fastening nut 141. The fastening nut 141 is threaded with the branch tube 14 to lock the proximal interface of the disposable component, ensuring airtightness and mechanical coupling accuracy. The bottom of the push block 132 is fixedly installed with a push rod 134. The push rod 134 is slidably installed inside the handle 1. The outer side of the push rod 134 located inside the branch tube 14 is fitted with a fastening nut 239. The inside of the support cylinder 22 is slidably installed with a push rod 217. The end of the push rod 217 is threaded. The fastening nut 239 and the end of the push rod 217 are threadedly connected. The end of the push rod 217 is located outside the conduit module 211. The fastening nut 141 is sleeved on the outside of the conduit module 211. The outer side of the conduit module 211 and the outer side of the push rod 134 are provided with corresponding protrusions. The protrusion on the outside of the conduit module 211 is located inside the fastening nut 141. After the disposable component and the branch pipe 14 are locked and fixed, the two sides of the outer protrusion of the conduit module 211 abut against the inner wall end face of the fastening nut 14 and the side wall of the branch pipe 14, respectively. The protrusion on the outside of the push rod 134 is located inside the fastening nut 239. After the push rod 134 and the push rod 217 are locked and fixed, the two sides of the outer protrusion of the push rod 217 abut against the inner wall end face of the fastening nut 239 and the side wall of the push rod 217, respectively.

[0022] like Figure 3 , Figure 4 and Figure 6As shown, an endoscope 215 is fixedly installed inside the observation tube 212. A wire 216 is provided on the side wall of the endoscope 215. The wire 216 and the connecting wire 12 are fixedly connected. An electric control button 13 is provided on the side wall of the handle 1. The electric control button 13 controls the image acquisition and real-time transmission of the endoscope 215. A quick-connect groove 142 is provided inside the branch tube 14. The wire 216 is located inside the quick-connect groove 142. The quick-connect groove 142 and the connecting wire 12 are connected. When the disposable component and handle 1 are secured, the operator pushes the push block 132, causing the push rod 134 to move the fastening nut 219 out of the branch tube 14. At this time, the push rod 134 and push rod 217 are aligned, and the fastening nut 219 is tightened. The disposable component is then directly inserted into the inside of the branch tube 14 (the operator releases the push block 132, and the push block 132 resets after the disposable component is inserted into the branch tube 14). This allows the two flow channels 214 to be inserted into the inside of the two connecting tubes 124, and the wire 216 to be inserted into the inside of the quick-connect groove 142. At this time, the operator tightens the fastening nut 141, so that the proximal interface of the disposable component is in close contact with the branch tube 14. The fastening nut 219 fixes the push rod 134 and push rod 217, achieving the pre-positioning between the disposable component and the branch tube 14. This significantly shortens the assembly time, reduces the operation error rate, and improves the assembly reliability and clinical response efficiency. After the staff inserts the Mirena into the human body using the appropriate tools, the staff observes the position of the Mirena through the observation tube 212 and confirms the area to be punctured and sutured by the suture needle 23 based on the position of the two support rods on the side wall of the Mirena.

[0023] like Figure 3 and Figures 6-11 As shown, a stop block 221 is fixedly installed on the top of the inner wall of the support cylinder 22. The stop block 221 only limits the peek buckle 232 that is not clamped to the seam 231, so that the stop block 221 can be replaced by other structures with the same characteristics. The support block 222 is integrally formed inside the support cylinder 22. The peek buckle 232 slides above the support block 222. A groove 225 is opened on the top of the support block 222. A spring locking tooth 236 is provided inside the groove 225. The bottom of the peek lock 232 is provided with a second lock groove 235. The spring lock tooth 236 is slidably inserted into the inside of the second lock groove 235. The cross-section of the second lock groove 235 and the shape of the spring lock tooth 236 are both right-angled triangles. The side wall of the peek lock 232 is provided with a first lock groove 233. The side wall of the pull hook 242 is integrally formed with a fixing rod 24. The fixing rod 24 and the second push rod 217 are fixedly connected. The side wall of the fixing rod 24 is provided with a spring lock rod 241. The spring lock rod 241 is slidably inserted into the inside of the first lock groove 233. Both sides of the spring lock rod 241 are bevels. During continuous circular punctures of the tissue (the suture assembly is equipped with two sutures 231 and two PEek locks 232; the two sutures 231 and two PEek locks 232 are used to fix the two support rods on the side wall of the Mirena during continuous circular punctures), the operator pushes the push block 132. The push block 132 pushes the push rod 217 through the push rod 134. The push rod 217 drives the suture needle 23 and the fixing rod 24 to move away from the handle 1. After the suture needle 23 moves out of the support tube 22, it deforms. As the suture needle 23 moves and punctures, the suture needle 23 drives the PEek locks 232 to move through the sutures 231. At this time, the inclined surface (hypotenuse of the right triangle) of the locking groove 235 abuts against the inclined surface (hypotenuse of the right triangle) of the spring locking tooth 236. The spring locking tooth 236 retracts, and the PEek locks 232 move (the two PEek locks 232 move synchronously). After the peek lock 232 contacts the stop block 221, the peek lock 232 stops moving. At this time, the fixing rod 24 drives the pull hook 242 to move out of the peek lock 232 that was in contact with the stop block 221 (the fixing rod 24 and the suture needle 23 move synchronously). This causes the fixing rod 24 to drive the spring locking rod 241 to move towards the peek lock 232 that is not in contact with the stop block 221. This causes the inclined surface of the spring locking rod 241 to contact the side wall of the locking groove 233 and slide into the locking groove 233. At this time, the suture needle 23 puncture ends, and the peek lock 232 that is not in contact with the stop block 221 and the fixing rod 24 lock together. The pull hook 242 hooks one end of the suture 231 loop. At this time, the worker pulls the push block 132, and the push rod 134 and the push rod 217 follow the push block 132 towards the peek lock 232. Moving the handle 1 in a certain direction resets the fixing rod 24 and the suture needle 23. The pull hook 242 pulls the annular end of the suture 231 into the peek lock 232, simultaneously moving the peek lock 232 (which is locked to the fixing rod 24). The suture needle 23 is deformed into a straight line by the contact of the internal structure of the support cylinder 22. When the peek lock 232 contacts the side wall of the spring locking tooth 236 (the right-angled side of the right triangle), the inclined surface of the spring locking rod 241 contacts the side wall of the locking groove 233 and slides out of the locking groove 233. As the operator continues to pull the push block 132, the fixing rod 24 and the suture needle 23 are reset (the distance between the peek lock 232 and the fixing rod 24 that are in contact with the spring locking tooth 236 is greater than the initial distance). During the second circumferential puncture at the tissue site, the operator pushes the push block 132 again. The push block 132, via push rod 134 and push rod 217, moves the suture needle 23 and the fixing rod 24 away from the handle 1. The suture needle 23, through the suture 231, moves the peek lock 232 (the peek lock 232 that abuts against the spring locking tooth 236). After the peek lock 232 abuts against the stop block 221, it stops moving. At this time, the fixing rod 24 moves the pull hook 242 out of the peek lock 232 that abuts against the stop block 221 (the fixing rod 24 and the suture needle 23 move synchronously). The suture needle 23 then punctures the suture knot... At the end of the second puncture (when the distance moved by the push block 132 at the end of the second puncture is greater than the distance moved by the push block 132 at the end of the first puncture, ensuring that the pull hook 242 can hook the loop end of the second suture 231), the peek lock 232 and the spring lock rod 241 that are in contact with the stop block 221 are not in contact. The pull hook 242 hooks one loop end of the suture 231. At this time, the staff pulls the push block 132, and the fixing rod 24 and the suture needle 23 are reset again. The pull hook 242 pulls one loop end of the suture 231 into the interior of the peek lock 232. The suture needle 23 is deformed into a straight shape by the contact of the internal structure of the support tube 22 until the fixing rod 24 and the suture needle 23 are reset.

[0024] like Figure 7 , Figure 10 and Figure 11 As shown, the side wall of the tip of the suture needle 23 has two hook grooves 234, which correspond to the annular shape of the suture 231. The pull hook 242 is slidably inserted into the inside of the hook groove 234. The support block 222 has a limiting cylinder 223 fixedly installed inside. Both the limiting cylinder 223 and the support block 222 have a wire groove 224 on their side walls, and the suture 231 is located inside the wire groove 224. During the puncture process of the suture needle 23, after the pull hook 242 and the suture needle 23 come into contact, the pull hook 242 slides along the side wall of the suture needle 23 into the inside of the hook groove 234. When it slides into the inside of the hook groove 234 corresponding to the suture 231, the puncture is completed. The main function of the limiting sleeve 223 is to resist the suture needle 23 during the contraction process, so that the suture needle 23 is deformed into a straight shape. Other structures with the same characteristics can also be used as substitutes.

[0025] like Figure 9 , Figure 12 and Figure 13As shown, the pressure plate 31 is slidably installed inside the support cylinder 22, and the pressure plate 31 is located above the peek lock 232. A spring 311 is provided between the pressure plate 31 and the support ring 213. The slide plate 218 is slidably installed inside the support cylinder 22, and the slide plate 218 is located above the pressure plate 31. The top of the pressure plate 31 is integrally formed with a tooth 312, and the bottom of the slide plate 218 is provided with a tooth groove 313 that meshes with the tooth 312. The shape of the tooth 312 and the tooth groove 313 can be set as a triangle. It is mainly used to drive the pressure plate 31 to move synchronously through the tooth 312 when the slide plate 218 moves, so as to achieve precise force transmission. The shape of the tooth 312 and the tooth groove 313 can also be set as a structure with the same characteristics, such as an arc shape. When the skateboard 218 slides away from the handle 1, the skateboard 218 presses the side wall of the tooth 312 through the groove 313, causing the pressure plate 31 to slide downward and stretch the spring 311. At this time, the pressure plate 31 presses the peek lock 232. When the skateboard 218 slides towards the handle 1, the pressure plate 31 resets through the spring 311, so that the tooth 312 is once again located inside the groove 313.

[0026] like Figure 2 and Figure 5 As shown, a slider 135 is slidably mounted on the outer side of push rod 134. Support rod 136 and support rod 238 are integrally formed at both ends of slider 135. The end of support rod 218 is located inside support tube 14 and abuts against slide plate 218. A rack 137 is fixedly mounted on the side wall of support rod 136. A gear 133 is fixedly mounted on the bottom of knob 131. Gear 133 and rack 137 mesh and drive each other. The function of gear 133 and rack 137 is only to convert the rotational force of knob 131 into linear movement force of slider 135. Gear 133 and rack 137 can be replaced by other mechanisms that convert the rotational force of knob 131 into linear movement force of slider 135. When fixing the suture 231, the worker rotates the knob 131 in the forward direction, causing the knob 131 to drive the gear 133 to rotate. The gear 133 drives the slide plate 218 to slide away from the handle 1 through the rack 137. After fixing, the worker rotates the knob 131 in the reverse direction, causing the knob 131 to drive the slide plate 218 to slide towards the handle 1 and reset through the gear 133 and the rack 137.

[0027] To further clarify, the aforementioned fixed connection should be interpreted broadly unless otherwise explicitly specified and limited. For example, it may be welding, gluing, or integral molding, or other conventional methods well known to those skilled in the art.

[0028] The above description is only a preferred embodiment of the present invention, but the scope of protection of the present invention is not limited thereto. Any equivalent substitutions or modifications made by those skilled in the art within the scope of the technology disclosed in the present invention, based on the technical solution and inventive concept of the present invention, should be covered within the scope of protection of the present invention.

Claims

1. A prefabricated, disposable endoscopic imaging intrauterine contraceptive device with anti-dislodgement suture fixation device, characterized in that, Including the handle (1); An external component is located on the outside of the handle (1); The power assembly, located inside the handle (1), includes a knob (131) and a push block (132). A disposable component is disposed on the side wall of the handle (1), including a distal tip (21) and a catheter module (211). The distal tip (21) and the catheter module (211) are fixedly connected. An observation tube (212), a support ring (213), a support tube (22) and two flow channels (214) are fixedly installed inside the disposable component. The two flow channels (214) are symmetrically distributed on both sides of the observation tube (212) and the support tube (22). The observation tube (212) is located above the support tube (22). The support ring (213) is fixedly fitted on the outside of the support tube (22). The suture assembly is located inside the support tube (22) and includes a suture needle (23), a suture thread (231) and a peek buckle (232). The suture thread (231) and the peek buckle (232) correspond one to one. One end of the suture thread (231) is fixedly connected to the side wall of the peek buckle (232), and the other end is set as a ring and sleeved on the outside of the tip of the suture needle (23). The fixing components, located inside the support cylinder (22), include a pull hook (242), a pressure plate (31), and a sliding plate (218).

2. The assembled disposable endoscopic imaging intrauterine contraceptive device for preventing dislodgement and suturing fixation according to claim 1, characterized in that: The external components include a display (11), a suction container (121), and a saline bag (122). The side wall of the display (11) is provided with a connecting line (12), which is used to transmit data. The input end of the suction can (121) and the output end of the saline bag (122) are both provided with connecting tubes (124). The two connecting tubes (124) pass through the side wall of the handle (1) to the inside of the handle (1) and are fixedly connected to the two flow channels (214). The flow channel (214) corresponding to the saline bag (122) is the inlet pipe, and the flow channel (214) corresponding to the suction canister (121) is the outlet pipe.

3. The assembled disposable endoscopic imaging intrauterine contraceptive device for preventing dislodgement and suturing fixation according to claim 1, characterized in that: The side wall of the handle (1) is integrally formed with a branch tube (14), the outer side of the branch tube (14) is threaded, and the outer side of the disposable component is fitted with a fastening nut (141), which is threadedly engaged with the branch tube (14). The bottom of the push block (132) is fixedly installed with a push rod (134), the push rod (134) is slidably installed inside the handle (1), and a fastening nut (139) is sleeved on the outside of one end of the push rod (134) inside the branch pipe (14). The support cylinder (22) has a push rod two (217) slidably installed inside. The end of the push rod two (217) is threaded. The fastening nut two (139) and the end of the push rod two (217) are threaded together. The end of the push rod (217) is located outside the conduit module (211).

4. The assembled disposable endoscopic imaging intrauterine contraceptive device for preventing dislodgement and suturing fixation according to claim 3, characterized in that: An endoscope (215) is fixedly installed inside the observation tube (212). A wire (216) is provided on the side wall of the endoscope (215). The wire (216) and the connecting wire (12) are fixedly connected. An electric control button (13) is provided on the side wall of the handle (1). The electric control button (13) controls the image acquisition and real-time transmission of the endoscope (215). The branch pipe (14) is provided with a quick-connect groove (142) inside, and the wire (216) is located inside the quick-connect groove (142). The quick-connect groove (142) is connected to the connecting wire (12).

5. The assembled disposable endoscopic imaging intrauterine contraceptive device for preventing dislodgement and suturing fixation according to claim 3, characterized in that: A stop (221) is fixedly installed on the top of the inner wall of the support cylinder (22); The support cylinder (22) has an integrally formed support block (222) inside. The peek buckle (232) slides above the support block (222). The top of the support block (222) has a sliding groove (225), and the inside of the sliding groove (225) has a spring locking tooth (236). The bottom of each peek latch (232) is provided with a second locking groove (235), and the spring locking tooth (236) is slidably inserted into the inside of the second locking groove (235); The side wall of the peek latch (232) is provided with a locking groove (233). The side wall of the pull hook (242) is integrally formed with a fixing rod (24), the fixing rod (24) and the push rod (217) are fixedly connected, and the side wall of the fixing rod (24) is provided with a spring locking rod (241), which is slidably inserted into the inside of the locking groove (233).

6. The assembled disposable endoscopic imaging intrauterine contraceptive device for preventing dislodgement and suturing fixation according to claim 5, characterized in that: The side wall of the tip of the suture needle (23) has two hook grooves (234), which correspond to the annular shape of the suture thread (231); The pull hook (242) is slidably inserted into the inside of the hook groove (234); The support block (222) is fixedly installed with a limiting cylinder (223). Both the limiting cylinder (223) and the support block (222) have wire grooves (224) on their side walls. The suture line (231) is located inside the wire groove (224).

7. The assembled disposable endoscopic imaging intrauterine contraceptive device for preventing dislodgement and suturing fixation according to claim 1, characterized in that: The pressure plate (31) is slidably installed inside the support cylinder (22). The pressure plate (31) is located above the peek buckle (232). A spring (311) is provided between the pressure plate (31) and the support ring (213). The slide plate (218) is slidably installed inside the support cylinder (22), and the slide plate (218) is located above the pressure plate (31); The top of the pressure plate (31) is integrally formed with protruding teeth (312), and the bottom of the sliding plate (218) is provided with a tooth groove (313) that meshes with the protruding teeth (312).

8. The assembled disposable endoscopic imaging intrauterine contraceptive device for preventing dislodgement and suturing fixation according to claim 3, characterized in that: A slider (135) is slidably mounted on the outer side of the push rod (134), and the two ends of the slider (135) are integrally formed with a support rod (136) and a support rod (138). The end of the second support rod (138) is located inside the first support tube (14) and abuts against the slide plate (218); A rack (137) is fixedly installed on the side wall of the support rod (136). Gear 1 (133) is fixedly installed at the bottom of the knob (131), and gear 1 (133) and rack 1 (137) mesh and drive each other.

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