Disposable superfine endoscope-sheath-guide wire common-rail visible endoscope catheter and suture-free intervention system

Abstract

The catheter comprises a first catheter body, a second catheter body, a clamping part and a driving part, the first catheter body is provided with a first channel allowing an endoscope to be placed in and a second channel allowing a guide wire to penetrate through or gas to be introduced in, the second catheter body is arranged on the outer wall of the first catheter body in a sleeving mode, and the clamping part is arranged on the outer wall of the second catheter body; a visual guide piece is arranged at the front end of the first tube body, the clamping part is arranged at the operation end of the first tube body, and coaxial positioning and clamping of the endoscope are achieved; the driving part is in threaded fit with the second pipe body through the transmission piece, the driving shaft moves reversely to enable the guide piece to be destroyed and separated, and the endoscope can enter the body after the second pipe body is taken out in a split mode. The system comprises the catheter, an injector and an endoscope, the injector is detachably connected to the second channel, and an imbedding tube of the endoscope penetrates through the first channel. The endoscope-sheath-guide wire co-rail guide and visual implantation are achieved, the blind insertion risk is avoided, puncture hole suturing is not needed, the operation process is simplified, tissue damage is reduced, and the infection risk is reduced.

Description

Technical Field

[0001] This invention relates to the field of sutureless endoscopic puncture technology, specifically to a disposable ultra-thin endoscope-sheath-guidewire co-track visual endoscopic catheter and sutureless intervention system. Background Technology

[0002] In clinical settings such as thoracoscopic interventional surgery, thoracentesis / abdominal paracentesis, and central venous catheterization, traditional thoracoscopic surgery has long followed the surgical laparoscopic operation mode. The procedure always follows the inherent logic of first establishing a channel and then inserting the endoscope. It requires first separating subcutaneous tissue through surgical incision, then using a trocar with a diameter of ≥10mm to puncture and establish a surgical channel, and finally inserting a 5-10mm rigid thoracoscope into the body through this channel to complete the diagnosis and treatment. Although this step-by-step operation mode has been used clinically for many years, it has many unavoidable technical defects due to the limitations of structural design and operation logic, and has become a key bottleneck restricting the development of minimally invasive, safe, and efficient surgery.

[0003] Traditional trocars typically have a diameter of ≥10mm, corresponding to puncture holes of 9-12mm, requiring postoperative suture closure. This not only increases postoperative pain and prolongs recovery, but also raises the risk of wound infection and scar hyperplasia, particularly detrimental to elderly or frail patients. Furthermore, the trocar procedure relies entirely on the physician's clinical feel and experience, representing a typical blind insertion operation. Given the complex distribution of lung tissue, blood vessels, and other organs within the thoracic cavity, and individual differences in thoracic structure among patients, blind puncture can easily lead to lung tissue damage and blood vessel rupture, resulting in serious complications such as pneumothorax and massive hemorrhage, even directly endangering the patient's life.

[0004] Furthermore, traditional surgery involves multiple independent steps, including skin incision, blunt dissection of subcutaneous tissue, trocar insertion to establish a puncture channel, thoracoscopic placement, postoperative drainage tube placement, and incision suturing. It involves a wide variety of instruments, including trocars, skin retractors, thoracoscopes, and drainage tubes, and requires the coordinated efforts of multiple medical staff to insert, remove, and replace these instruments. This results in excessively long surgical times and increases the risk of anesthesia exposure for patients. Moreover, the complex procedures create a steep learning curve, requiring novice surgeons to accumulate extensive experience before mastering the procedure, hindering its rapid widespread application. Additionally, the repeated insertion and removal of various instruments during the procedure can cause secondary damage to the tissues surrounding the puncture channel through repeated mechanical friction and traction, further exacerbating patient trauma. Instrument displacement can also lead to an unstable surgical field, affecting diagnostic accuracy. In addition, traditional surgical instruments are mostly reusable and sterile. Although they are sterilized, repeated use still poses a potential risk of cross-infection. Furthermore, different instruments need to be assembled and combined temporarily during the operation, which not only prolongs the preoperative preparation time but may also affect the smoothness of the operation due to instrument compatibility issues.

[0005] Therefore, how to develop a disposable ultra-thin endoscope catheter with a co-track visual guidance system and a sutureless intervention system to achieve integrated, visual guidance and sutureless separation is an urgent problem that needs to be solved. Summary of the Invention

[0006] To address the technical problems existing in the prior art, the first objective of this invention is to provide a disposable ultra-thin endoscope catheter with a co-track guide wire, enabling guided and visualized insertion of the endoscope, sheath, and guide wire, avoiding the risks of lung injury and pneumothorax caused by blind insertion. The separate removal design combined with the ultra-thin structure enables sutureless puncture, simplifying the operation and reducing tissue damage.

[0007] The second objective of this invention is to provide a sutureless interventional system that integrates the aforementioned catheter, syringe, and endoscope. By connecting the various components, it achieves integrated operation, eliminating the need for repeated insertion and removal of instruments, further simplifying the surgical procedure, shortening the time required, reducing the risk of cross-infection, and improving the safety and convenience of the surgery.

[0008] To achieve the above objectives, the present invention adopts the following technical solution: Disposable ultra-fine endoscope-sheath-guidewire co-track visual endoscope catheter, including: The first tube has a first channel for inserting an endoscope and a second channel for accommodating a guidewire and allowing gas to pass through it, formed along its length. The second tube is detachably disposed on the outer wall of the first tube. One end of the second tube has a visible guide, which corresponds to the inlet end of the first tube and is provided with a through hole communicating with the second channel. The other end of the second tube extends along the length of the first tube toward the operating end of the first tube. A clamping part is provided at the operating end of the first tube body for coaxial positioning and clamping of the endoscope inserted into the first channel; The driving unit includes a transmission member rotatably disposed on the outer wall of the first tube body, wherein the transmission member forms a threaded transmission engagement with the other end of the second tube body. By rotating the transmission member, the second tube body is driven to move in the opposite direction along the axial direction relative to the first tube body, so that the inlet end of the first tube body pushes against the guide member to achieve destructible separation, thereby allowing the second tube body to be separated and removed, and allowing the endoscope to enter the body along the first channel.

[0009] According to one example, the first channel extends along the axial direction of the first tube, with one end of the first channel corresponding to the inlet end of the first tube and the other end corresponding to the operating end of the first tube. One end of the second channel corresponds to the inlet end of the first tube and communicates with the through hole of the guide, while the other end extends along the length of the first tube and passes through the side wall near the operating end of the first tube to form a channel interface.

[0010] According to one example, the outer wall of the first tube is provided with a first fixing ring, and one end of the first fixing ring is provided with an annular protrusion; The transmission component has a threaded through hole formed axially, and the annular protrusion is rotatably disposed at one end of the threaded through hole; The other end of the second tube is provided with a second fixing ring, and an external thread is formed on the outer wall of the second fixing ring, which meshes with the internal thread of the threaded through hole.

[0011] According to one example, a plurality of guide rods are spaced apart along the circumferential direction of the first tube on one side of the annular protrusion. The end of the guide rod away from the annular protrusion extends into a groove on the inner wall of the other end of the second tube, and the guide rod slides into the groove to restrict the circumferential rotation of the second tube.

[0012] According to one example, the transmission component includes a detachably mating first housing and a second housing, wherein the first housing and the second housing together define the threaded through hole when they are mated. The first housing and the second housing have concave surfaces formed on their two opposite outer side walls.

[0013] According to one example, the clamping part includes a plurality of elastic clamping plates arranged circumferentially along the operating end of the first tube, and a first thread is formed on the outer wall of the operating end of the first tube. The first tube body has a rotating ring rotatably provided at its operating end. The elastic clamp is located in the clamping channel of the rotating ring. The inner wall of the clamping channel is formed with a second thread that mates with the first thread. The clamping channel has a trapezoidal section and a straight section along the axial direction. The elastic clamp can be driven to contract radially by rotating the rotating ring.

[0014] According to one example, the guide includes a detachably disposed first conical housing and a second conical housing, one end of the first conical housing and the second conical housing together defining the through hole.

[0015] The sutureless intervention system includes: The aforementioned disposable ultra-fine endoscope-sheath-guidewire co-track visual endoscope catheter; A syringe, which is detachably connected to the inlet end of the second channel; An endoscope, comprising a body, an insertion tube, and an imaging component and an illumination component disposed within the body, wherein the insertion tube is slidably inserted within a first channel, the imaging component is used for visual observation, and the illumination component is used for providing illumination.

[0016] According to one example, the outer wall of the insertion tube is provided with a connecting block, which is detachably connected to the clamping part.

[0017] According to one example, the injection end of the syringe is provided with an annular groove, and the inlet end of the second channel is provided with an annular locking block that mates with the annular groove.

[0018] The present invention has the following advantages: This invention compresses the outer diameter of a disposable ultra-thin endoscope-sheath-guidewire co-track visual endoscope catheter to ≤5mm, and the diameter of the matching endoscope insertion tube is ≤4mm. Through a compact layout with parallel dual channels, it achieves a revolutionary reduction in puncture hole diameter while ensuring guidewire guidance, gas access, and endoscope passage. Compared to the traditional 9-12mm trocar puncture hole area, it is reduced by more than 50%, fully meeting the standard of natural healing without sutures. The extremely small puncture hole reduces tissue damage, significantly reduces postoperative pain, eliminates the risk of needle-suture-related infections, and shortens hospital stay from the traditional average of 1.2 days to 0.3 days, accelerating patient recovery and reducing postoperative care costs.

[0019] The guide is made of transparent material, and its front-mounted layout, along with the imaging and illumination components at the distal end of the endoscope insertion tube, allows the endoscope's probe to directly reach the inside of the guide. During the puncture, real-time imaging monitoring of critical operational points such as pleural breakthrough helps avoid serious complications like lung injury and pneumothorax. Simultaneously, the precise axial alignment of the guidewire and the second channel ensures the catheter advances along the pre-placed guidewire, preventing deviation from the puncture path. The threaded drive of the drive unit and the limiting action of the guide rod ensure controllable axial movement of the second tube. The guide experiences uniform force when splitting along the pre-set V-shaped weakening groove, further guaranteeing operational safety and reducing the physician's learning curve from the traditional 50 cases to 10 cases, lowering the technical threshold.

[0020] The elastic clamping plate and rotating ring threaded structure of the clamping part of this invention can achieve rigid locking through rotation. The guidewire insertion path runs through the second channel. With the interference fit of the annular locking block and annular locking groove of the syringe and the channel interface, operations such as guidewire extraction and air injection / de-inflation can be completed with one hand without repeated instrument changes. After puncture, the transmission component of the drive part is threaded with the second tube body. Rotation drives the second tube body to move axially in the opposite direction, causing the guide to split precisely along the V-shaped weakening groove. Then, through the split transmission component and the second tube body, the outer structure can be removed minimally invasively without additional incisions, leaving only the inner first tube body as the working channel. This achieves seamless connection of the three steps of insertion, support, and withdrawal, shortening the operation time. In addition, the package includes a complete set of auxiliary instruments such as puncture needles, guidewires, and syringes, making it ready to use out of the box, reducing hospital instrument procurement and inventory management costs, and reducing the workload of doctors in preoperative preparation, taking into account both clinical practicality and market economy. Attached Figure Description

[0021] Figure 1 This is a three-dimensional structural diagram of the disposable ultra-fine endoscope-sheath-guidewire co-track visual endoscope catheter of the present invention.

[0022] Figure 2 This is a three-dimensional structural diagram of the disposable ultra-fine endoscope-sheath-guidewire co-track visual endoscope catheter of the present invention from another angle.

[0023] Figure 3 This is a three-dimensional cross-sectional view of the disposable ultra-fine endoscope-sheath-guidewire co-track visual endoscope catheter of the present invention.

[0024] Figure 4 This is a cross-sectional view of the structure of the disposable ultra-fine endoscope-sheath-guidewire co-track visual endoscope catheter of the present invention.

[0025] Figure 5 This is a magnified view of a portion of point A.

[0026] Figure 6 This is a magnified view of a section at point B.

[0027] Figure 7 This is a magnified view of a section at point C.

[0028] Figure 8 This is a three-dimensional exploded view of the disposable ultra-thin endoscope catheter with a sheath and guidewire on the same track according to the present invention.

[0029] Figure 9 This is an exploded perspective view of the drive unit of the present invention.

[0030] Figure 10 This is a three-dimensional structural diagram of the endoscope of the present invention.

[0031] Figure 11 This is a three-dimensional structural diagram of the syringe of the present invention.

[0032] Wherein, 1 is the first tube body, 101 is the first channel, 102 is the second channel, 102a is the channel interface, 103 is the first fixing ring, 103a is the annular protrusion, 103b is the guide rod, 104 is the first thread, 2 is the second tube body, 201 is the guide component, 201a is the through hole, 201b is the first conical shell, 201c is the second conical shell, 202 is the second fixing ring, 202a is the external thread, 202b is the groove, and 3 is the clamp. The components are as follows: 301 is an elastic clamping plate, 302 is a rotating ring, 302a is a second thread, 302b is a clamping channel, 302b1 is a trapezoidal segment, 302b2 is a straight segment, 4 is a driving part, 401 is a transmission component, 401a is a threaded through hole, 401b is a first housing, 401c is a second housing, 401d is an inner concave surface, 5 is a syringe, 6 is an endoscope, 601 is the endoscope body, 602 is the insertion tube, 602a is a connecting block, and 7 is a guide wire. Detailed Implementation

[0033] The present invention will now be described in further detail with reference to the accompanying drawings and specific embodiments.

[0034] Reference Figure 1-4 This invention illustrates a specific embodiment of a disposable ultra-thin endoscope-sheath-guidewire co-track visual endoscopic catheter. This catheter mainly solves the problems of high risk of blind insertion, need for suturing of puncture sites, and cumbersome operation procedures in traditional thoracoscopic surgery. The whole adopts a disposable ultra-thin integrated structure. The catheter mainly includes a first tube body 1, a second tube body 2, a clamping part 3, and a driving part 4. The components are connected to form a co-track collaborative structure of endoscope-sheath-guidewire. Among them, the first tube body 1 is the functional core carrier, the second tube body 2 is used for expansion and guidance components, the clamping part 3 is used for positioning stability of visualization components, and the driving part 4 realizes the control and separation of expansion components, thereby realizing the integrated operation of visual insertion, precise expansion, separate removal, and endoscopic depth.

[0035] Reference Figure 1-4The first tube 1 is a straight cylindrical structure with open ends along its axial direction. The end closer to the human diagnostic area is designated as the inlet end, while the end further away from the human body and used by the operator for gripping is designated as the operating end or handheld end. The interior of the first tube 1 forms two independent functional channels along its length: a first channel 101 for inserting the endoscope 6, and a second channel 102 for guiding the guidewire 7 and controlling gas flow. The two channels are arranged in parallel and do not interfere with each other.

[0036] The first tube 1 has an ultra-thin outer diameter of ≤5mm, a revolutionary reduction in puncture diameter compared to the 9-12mm diameter trocar used in traditional thoracoscopic surgery, providing a structural basis for sutureless wound healing postoperatively. The first channel 101 extends axially along the first tube 1, with its two ends corresponding to the inlet and outlet ends of the first tube 1, ensuring smooth axial insertion and deep penetration of the endoscope 6 into the body. One end of the second channel 102 connects to the inlet end of the first tube 1, while the other end extends along the length of the first tube 1 to a region near the outlet end, exiting laterally from a channel interface 102a formed on the side wall of the first tube 1. This lateral channel interface 102a avoids operational interference with the first channel 101 and facilitates the rapid insertion of the guidewire 7 or docking of the syringe 5. Furthermore, the specific length of the first tube 1 can be set according to the actual needs of clinical practice, improving practicality.

[0037] Among them, the trocar is an instrument used in thoracoscopic surgery to create a channel between the body surface and the internal cavity. The traditional structure mainly consists of an outer dilator and an inner working cannula. The tissue needs to be opened by the dilator, and the inner cannula is retained as the channel for the instrument to enter and exit.

[0038] Reference Figure 1-3 The second tube 2 is detachable and coaxially sleeved on the outer wall of the first tube 1, forming a sheath-tube expansion structure. One end of the second tube 2 is equipped with a visual guide 201, and the other end extends along the length of the first tube 1 towards the operating end, forming a protective expansion range covering the inlet to the middle area of ​​the first tube 1. The second tube 2 is used for guidance and expansion during the puncture process. The external expansion function of the second tube 2 is achieved through its cylindrical structure and the conical contour of the guide 201, which can form a gentle expansion of the subcutaneous tissue during puncture, avoiding tissue damage caused by the violent puncture of traditional trocars.

[0039] The visual guide 201 is made of transparent medical material, such as medical polycarbonate (PC) or medical polymethyl methacrylate (PMMA), and is integrally formed or separately formed at the front end of the second tube 2. Its overall shape is a tapered converging structure, and the end face of the guide 201 corresponds to the inlet end face of the first tube 1. A through hole 201a is provided at the axial position of the guide 201. The diameter of the through hole 201a matches the inner diameter of the second channel 102 and is axially aligned, allowing the second channel 102 to form a communication channel with the external space. (Refer to...) Figure 5 and Figure 8 The guide member 201 adopts a split structure, which includes a detachable first conical shell 201b and a second conical shell 201c. After docking, the end faces are fitted together so that one end of the first conical shell 201b and the second conical shell 201c jointly defines a through hole 201a. A fracture separation guide groove is provided on the conical sidewall of the guide member 201. The fracture separation guide groove is a V-shaped weakening groove that extends along the axial direction of the guide member 201.

[0040] When the external endoscope 6 is inserted along the first channel 101, its probe end moves to the limit position of assembly, i.e., the bottom, when it fits against the inner side of the guide 201. The position is determined by the transparency of the guide 201, ensuring the integrity of the initial field of view of the endoscope 6. The guide wire 7 passes through the through hole 201a of the guide 201 and the second channel 102 of the first tube 1 from the outside. After extending along the second channel 102 to the area near the operating end, it exits from the channel interface 102a on the side wall of the first tube 1, realizing the same-track guiding and positioning of the guide wire-sheath-tube.

[0041] The pre-positioning of guidewire 7 is achieved using existing minimally invasive puncture techniques. First, a local puncture is performed at a preset puncture point using a puncture needle. After penetrating the chest wall, it is confirmed that the needle tip has reached the target cavity. Then, guidewire 7 is inserted through the needle core channel of the puncture needle and slowly pushed to the preset depth. The position of guidewire 7 is kept stable, and the puncture needle is withdrawn along the axis of guidewire 7 to complete the pre-positioning of guidewire 7 in the body. Sufficient length is reserved at the exposed end of guidewire 7 for subsequent operations.

[0042] Reference Figure 6 , Figure 8 and Figure 9The drive unit 4 is used to separate the sheath and tube and remove the second tube 2. It includes a transmission member 401 rotatably disposed on the outer wall of the first tube 1. The transmission member 401 forms a threaded transmission engagement with the other end of the second tube 2, converting the rotational motion into axial linear motion, thereby realizing the destructible separation of the guide member 201 and the separate removal of the second tube 2, leaving a channel for the endoscope 6 to penetrate into the body. By rotating the transmission member 401, the threaded pair formed between it and the second tube 2 drives the second tube 2 to move axially in the opposite direction relative to the first tube 1, so that the inlet end of the first tube 1 forms an axial pushing force on the guide member 201, forcing the guide member 201 to break apart and separate. Subsequently, the second tube 2 can be disassembled and removed from the outer wall of the first tube 1, and the endoscope 6 can be inserted into the body for diagnosis and treatment along the first channel 101.

[0043] In one embodiment, a first fixing ring 103 is provided on the outer wall of the first tube 1. An annular protrusion 103a is provided at one end of the first fixing ring 103 near the second tube 2, and multiple anti-slip grooves are provided circumferentially on the outer wall of the first fixing ring 103 to improve the stability of handheld operation. A threaded through hole 401a is formed axially through the interior of the transmission component 401. The annular protrusion 103a is rotatably locked at one end of the threaded through hole 401a. Through the axial limiting effect of the annular protrusion 103a, the transmission component 401 can only rotate within a preset range and cannot move axially. A second fixing ring 202 is provided at the end of the second tube body 2 away from the guide member 201. The second tube body 2 and the second fixing ring 202 are integrally formed or separately formed. The outer wall of the second fixing ring 202 has an external thread 202a. The external thread 202a meshes with the internal thread of the threaded through hole 401a of the transmission member 401 to form a threaded transmission pair. The transmission member 401 is axially limited between the first fixing ring 103 and the second fixing ring 202 to ensure stable force during transmission.

[0044] In this embodiment, multiple guide rods 103b are spaced apart along the circumference of the first tube 1 on the side of the annular protrusion 103a facing the second fixing ring 202. In this embodiment, there are two guide rods 103b. The free ends of the two guide rods 103b away from the annular protrusion 103a extend into the groove 202b provided on the inner wall of the other end of the second tube 2, and the guide rods 103b and the groove 202b form a sliding fit. The circumferential limiting effect of the guide rods 103b ensures that the second tube 2 can only slide along the axial direction of the guide rods 103b, preventing circumferential deflection of the second tube 2 when the transmission component 401 rotates.

[0045] In one embodiment, the transmission component 401 includes a detachably disposed first housing 401b and a second housing 401c. The first housing 401b and the second housing 401c have approximately the same shape, with a C-shaped cross-section, and after mating, they define a threaded through hole 401a inside. Both outer walls of the first housing 401b and the second housing 401c have concave surfaces 401d, and the mating end faces of the first housing 401b and the second housing 401c are pre-fixed by pins. The first housing 401b and the second housing 401c are fastened to the outer wall of the first tube 1 and positioned by pins. When disassembly is required, the concave surfaces 401d are pried outward to separate the first housing 401b and the second housing 401c along the mating surface.

[0046] With this configuration, by holding the first fixing ring 103 and rotating the transmission component 401, the threaded pair drives the second fixing ring 202 to move the second tube 2 axially toward the first fixing ring 103. Simultaneously, the inlet end of the first tube 1 pushes against the guide component 201. Since the guide component 201 is a splittable structure, it breaks and separates along the fracture point under continuous pushing force. After the guide component 201 separates, the first housing 401b and the second housing 401c are pried open, allowing the second tube 2 to be removed from the outer wall of the first tube 1, completing the sheath-tube separation operation.

[0047] Continue to refer to Figure 8 and Figure 9 The second tube body 2 also adopts a split structure. The second tube body 2 has a pair of symmetrically arranged semi-arc tubes. After the two semi-arc tubes are joined together, they form a circular cylindrical structure that fits with the outer wall of the first tube body 1. The ends of the two semi-arc tubes away from the guide member 201 are connected to the second fixing ring 202, and the external threads 202a of the second fixing ring 202 are continuously distributed circumferentially and mesh with the threaded through hole 401a of the transmission member 401.

[0048] Next refer to Figure 7 and Figure 8The clamping part 3 is disposed at the operating end of the first tube body 1 and is used to coaxially position and clamp the endoscope 6 inserted into the first channel 101. The clamping part 3 includes a plurality of elastic clamping plates 301 arranged circumferentially along the operating end of the first tube body 1. The elastic clamping plates 301 can be made of medical elastic plastic, such as medical ABS, and are integrally formed with the first tube body 1. Their inner walls have arc-shaped surfaces that cooperate with the insertion tube 602 of the endoscope 6, and the outer wall of the operating end of the first tube body 1 is formed with a first thread 104. The number of elastic clamping plates 301 is preferably 3-4, and they are evenly distributed circumferentially. The first tube body 1 is rotatably provided with a rotating ring 302 at its operating end. The rotating ring 302 is located on the side of the first fixed ring 103 away from the transmission member 401. Its outer wall is formed with multiple anti-slip grooves to improve the gripping friction during rotation operation. The rotating ring 302 has a through clamping channel 302b inside. The inner wall of the clamping channel 302b has a second thread 302a that mates with the first thread 104 on the outer wall of the elastic clamping plate 301. The clamping channel 302b is formed axially with a trapezoidal section 302b1 at the front and a straight section 302b2 at the rear. The inner diameter of the trapezoidal section 302b1 gradually decreases in the direction away from the elastic clamping plate 301, forming a wedge-shaped clamping structure.

[0049] When the rotating ring 302 is rotated, the second thread 302a on the inner wall of the clamping channel 302b and the first thread 104 on the outer wall of the first tube 1 form a threaded transmission, driving the rotating ring 302 to move axially towards the elastic clamping plate 301 along the first tube 1. As the rotating ring 302 advances axially, the inclined structure of the trapezoidal segment 302b1 gradually squeezes the outer wall of the elastic clamping plate 301, using the guiding effect of the wedge-shaped surface to convert the axial force of the rotating ring 302 into the radial contraction force of the elastic clamping plate 301. When the rotating ring 302 moves to the straight segment 302b2 of the clamping channel 302b, the inner wall of the straight segment 302b2 forms a radial limit on the elastic clamping plate 301, ensuring that the clamping force is stably maintained.

[0050] After the endoscope 6 insertion tube 602 is inserted into the predetermined position along the first channel 101, the rotating ring 302 is held and rotated. The rotating ring 302 advances axially through the threaded drive, and the inclined side of the trapezoidal section 302b1 gradually compresses the elastic clamp 301, causing it to contract radially and fit against the outer wall of the endoscope 6 insertion tube 602, until the rotating ring 302 rotates to the straight section 302b2 to achieve rigid limitation, thus completing the clamping and fixation. When it is necessary to release the endoscope 6, the rotating ring 302 is rotated in the opposite direction to disengage the inclined side of the trapezoidal section 302b1 from the elastic clamp 301, and the endoscope 6 can be smoothly removed.

[0051] Reference Figure 1 , Figure 10 and Figure 11This application also provides a sutureless interventional system, which mainly includes the above-mentioned disposable ultra-thin endoscope-sheath-guidewire co-track visual thoracic endoscopic catheter, syringe 5 and endoscope 6, and is equipped with a complete set of surgical auxiliary instruments.

[0052] The syringe 5 is detachably connected to the channel interface 102a of the second channel 102. The outer wall of the injection end of the syringe 5 is provided with an annular groove, and the inner wall of the channel interface 102a of the second channel 102 is provided with an annular block. The annular block and the annular groove are interference-fitted to ensure the sealing when the gas is switched on and off, and to realize the quick insertion and removal of the syringe 5.

[0053] The endoscope 6 is designed with an ultra-thin profile and mainly includes a body 601, an insertion tube 602, and an imaging component and an illumination component integrated within the body 601. The imaging component is used for visual observation, and the illumination component provides illumination. The insertion tube 602 can slide through the first channel 101 of the catheter, and a connecting block 602a is provided on the outer wall of the insertion tube 602. The connecting block 602a is detachably connected to the clamping part 3 of the catheter. Specifically, the connecting block 602a is detachably connected to the rotating ring 302, and the connection method can be threaded connection, key connection, etc. When the clamping part 3 is clamped, the connecting block 602a and the rotating ring 302 are fixedly connected, further enhancing the stability of the connection between the endoscope 6 and the catheter. The internal structure of the endoscope 6 is a conventional structure and will not be described further here.

[0054] The interventional system adopts a single-use sterile packaging design. The catheter and endoscope 6 have been pre-assembled and debugged before leaving the factory. The package also provides a complete set of auxiliary instruments required for the operation, including but not limited to sterilization components, guidewires, puncture needles, guidewire injectors, regular injectors and skin retractors, etc., eliminating the need for additional third-party instruments and improving the efficiency of surgical preparation.

[0055] The catheter employs an ultra-fine trocar structure with an outer diameter of ≤5mm, achieving a revolutionary reduction in puncture diameter compared to traditional 9-12mm trocars. The matching endoscope 6 has an insertion tube 602 with an outer diameter of ≤4mm, and when pre-fixed inside the catheter, the imaging component's camera end can directly reach the transparent tip of the guide 201. During surgery, it enters the body simultaneously along the pre-placed guidewire 7, providing full visualization of the puncture process and avoiding risks such as lung injury and pneumothorax caused by blind insertion. The clamping part 3 forms a rigid whole between the endoscope 6 and the catheter. The guidewire 7 is led out from the channel interface 102a on the side wall of the catheter. The syringe 5 connects to the second channel 102 through a ring-shaped locking and slot structure, allowing for direct intraoperative inflation and deflation operations, solving the cumbersome problems of repeated instrument changes and poor interface sealing in traditional surgeries. The V-shaped weakening groove formed by the guide member 201 of the second tube body 2, through the transmission member 401 of the rotation drive unit 4, causes the second tube body 2 to move in the opposite direction along the axial direction. When the inlet end of the first tube body 1 pushes the guide member 201, the guide member 201 splits longitudinally along the V-shaped weakening groove to achieve active splitting, ensuring rigid support during puncture insertion, and allowing the second tube body 2 to be minimally invasively removed from the tissue space after splitting. Combined with a puncture hole diameter of ≤5mm, it achieves sutureless wound healing after surgery.

[0056] In one specific embodiment of this application, an intervention method is also provided, comprising the following steps: Preoperative preparation and endoscope assembly and fixation After unpacking the sterile packaging, insert the insertion tube 602 of the endoscope 6 into the first channel 101 through the inlet of the clamping part 3 at the operating end of the first tube body 1 until the imaging component of the endoscope 6 reaches the predetermined position of the guide 201. At this time, the operator can observe the transparent end face of the guide 201 through the field of view of the endoscope 6, or feel the pushing resistance of the insertion tube 602 to confirm that the assembly limit position has been reached. Then rotate the rotating ring 302 of the clamping part 3, and through the threaded transmission, the trapezoidal section 302b1 of the rotating ring 302 squeezes the elastic clamp 301 radially to achieve rigid fixation of the endoscope 6 and the catheter.

[0057] Guided visual puncture and insertion Holding the catheter operating end of the fixed endoscope 6 with one hand, i.e., holding the first fixing ring 103, and taking the pre-placed guidewire 7 with the other hand, the guidewire 7 is inserted through the through hole 201a of the guide element 201, extending along the second channel 102 to the channel interface 102a of the operating end, completing the alignment of the guidewire 7 and the catheter. The catheter is then pushed axially along the guidewire 7, and the puncture path is observed in real time through the imaging and illumination components of the endoscope 6, ensuring that the tapered structure of the guide element 201 smoothly expands the tissue until the catheter reaches the preset treatment position, achieving fully visualized puncture and avoiding the risk of blind insertion.

[0058] Guidewire switching and syringe connection The guidewire 7 can be retained or removed according to the needs of the surgery. If the guidewire 7 needs to be removed, it can be directly pulled out from the channel interface 102a. Then, the injection end of the syringe 5 is aligned with the channel interface 102a and inserted. The annular locking block and the annular locking groove form an interference fit to achieve the detachable sealing and fixation of the syringe 5. This allows the syringe 5 to be stably assembled without being held by hand. The artificial pneumothorax can be inflated or deflated at any time through the second channel 102, solving the problems of sealing failure and cumbersome operation caused by repeated insertion and removal of the syringe 5 in traditional surgery.

[0059] Second tube 2 actively split and minimally invasively removed Hold the first fixing ring 103 of the catheter stably with one hand, and rotate the transmission component 401 of the drive unit 4 with the other hand. The transmission component 401 drives the second fixing ring 202 through the threaded pair, causing the second tube body 2 to move axially towards the operating end. The inlet end of the first tube body 1 simultaneously pushes the guide component 201, causing the guide component 201 to split longitudinally along the preset V-shaped weakening groove. After the guide component 201 splits, pry open the concave surface 401d of the transmission component 401 to separate the first shell 401b and the second shell. Remove the transmission component 401 and discard it. Since the second tube body 2 has a symmetrical semi-arc tube structure, its front end splits with the guide component 201 and its rear end loses its fixation as the transmission component 401 is removed. The two semi-arc tubes can be separated to both sides and minimally invasively removed from the tissue space without axial pulling, avoiding secondary damage.

[0060] In-depth endoscopic diagnosis and treatment and postoperative care The rotating ring 302 of the reverse rotating clamping part 3 is rotated, and the elastic clamp 301 is reset and opened under its own elasticity, releasing the fixation on the endoscope 6. The endoscope 6 is then inserted deeper into the body along the first channel 101, and the diagnostic and treatment operation is completed through the imaging component. When the instrument needs to be removed after the operation, the endoscope 6 and the catheter can be withdrawn simultaneously. Puncture holes with a diameter of 5 mm or less can heal naturally without sutures.

[0061] The above embodiments are preferred embodiments of the present invention, but the embodiments of the present invention are not limited to the above embodiments. Any changes, modifications, substitutions, combinations, or simplifications made without departing from the spirit and principle of the present invention should be considered equivalent substitutions and are included within the protection scope of the present invention. The embodiments described in this disclosure are intended as non-limiting examples, and other embodiments may take various and alternative forms. Furthermore, the drawings are not necessarily to scale and may present simplified expressions of various features of the present disclosure, including, for example, specific dimensions, orientations, positions, and shapes. Details associated with such features will be determined in part by the intended application and usage environment of the described embodiments.

[0062] The detailed description and accompanying drawings are supporting and descriptive of this teaching, but the scope of this teaching is defined only by the claims. While the best mode and some other embodiments for carrying out this teaching have been described in detail, various alternative designs and embodiments exist for practicing the teaching as defined in the appended claims. Furthermore, this disclosure expressly includes combinations and sub-combinations of the elements and features set forth above and below.

Claims

1. A disposable ultra-fine endoscope catheter with a co-track design for the endoscope, sheath, and guidewire, characterized in that... include: The first tube has a first channel for inserting an endoscope and a second channel for accommodating a guidewire and allowing gas to pass through it, formed along its length. The second tube is detachably disposed on the outer wall of the first tube. One end of the second tube has a visible guide, which corresponds to the inlet end of the first tube and is provided with a through hole communicating with the second channel. The other end of the second tube extends along the length of the first tube toward the operating end of the first tube. A clamping part is provided at the operating end of the first tube body for coaxial positioning and clamping of the endoscope inserted into the first channel; The driving unit includes a transmission member rotatably disposed on the outer wall of the first tube body, wherein the transmission member forms a threaded transmission engagement with the other end of the second tube body. By rotating the transmission member, the second tube body is driven to move in the opposite direction along the axial direction relative to the first tube body, so that the inlet end of the first tube body pushes against the guide member to achieve destructible separation, thereby allowing the second tube body to be separated and removed, and allowing the endoscope to enter the body along the first channel.

2. The disposable ultra-thin endoscope catheter with co-track viewing according to claim 1, characterized in that, The first channel extends along the axial direction of the first tube body, with one end of the first channel corresponding to the inlet end of the first tube body and the other end corresponding to the operating end of the first tube body. One end of the second channel corresponds to the inlet end of the first tube and communicates with the through hole of the guide, while the other end extends along the length of the first tube and passes through the side wall near the operating end of the first tube to form a channel interface.

3. The disposable ultra-thin endoscope catheter with co-track viewing according to claim 1, characterized in that, The outer wall of the first tube is provided with a first fixing ring, and one end of the first fixing ring is provided with an annular protrusion; The transmission component has a threaded through hole formed axially, and the annular protrusion is rotatably disposed at one end of the threaded through hole; The other end of the second tube is provided with a second fixing ring, and an external thread is formed on the outer wall of the second fixing ring, which meshes with the internal thread of the threaded through hole.

4. The disposable ultra-fine endoscope-sheath-guidewire co-track visual endoscope catheter according to claim 3, characterized in that, A plurality of guide rods are spaced apart along the circumferential direction of the first tube on one side of the annular protrusion. The end of the guide rod away from the annular protrusion extends into a groove on the inner wall of the other end of the second tube, and the guide rod slides into the groove to restrict the circumferential rotation of the second tube.

5. The disposable ultra-thin endoscope catheter with co-track viewing according to claim 3, characterized in that, The transmission component includes a detachably mating first housing and a second housing, and the first housing and the second housing together define the threaded through hole after they are mated. The first housing and the second housing have concave surfaces formed on their two opposite outer side walls.

6. The disposable ultra-thin endoscope catheter with co-track viewing according to claim 1, characterized in that, The clamping part includes a plurality of elastic clamping plates arranged circumferentially along the operating end of the first tube, and a first thread is formed on the outer wall of the operating end of the first tube. The first tube body has a rotating ring rotatably provided at its operating end. The elastic clamp is located in the clamping channel of the rotating ring. The inner wall of the clamping channel is formed with a second thread that mates with the first thread. The clamping channel has a trapezoidal section and a straight section along the axial direction. The elastic clamp can be driven to contract radially by rotating the rotating ring.

7. The disposable ultra-thin endoscope catheter with co-track viewing according to claim 1, characterized in that, The guide includes a detachably disposed first conical shell and a second conical shell, one end of which together defines the through hole.

8. A sutureless intervention system, characterized in that, include: The disposable ultra-thin endoscope catheter with sheath and guidewire as described in any one of claims 1 to 7; A syringe, which is detachably connected to the inlet end of the second channel; An endoscope, comprising a body, an insertion tube, and an imaging component and an illumination component disposed within the body, wherein the insertion tube is slidably inserted within a first channel, the imaging component is used for visual observation, and the illumination component is used for providing illumination.

9. The sutureless intervention system according to claim 8, characterized in that, The outer wall of the insertion tube is provided with a connecting block, which is detachably connected to the clamping part.

10. The sutureless intervention system according to claim 8, characterized in that, The syringe has an annular groove at the injection end, and the second channel has an annular block at the inlet end that mates with the annular groove.

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