Airway contrast wire catheter kit for delivery of airway stents

Abstract

The application discloses an airway contrast guide wire catheter set for conveying an airway stent, relates to the field of medical devices, and comprises a mouthpiece, a Y-shaped conveying pipe which is sleeved in the mouthpiece, and a guide wire sheath which is sleeved in the Y-shaped conveying pipe, wherein the Y-shaped conveying pipe is used for providing a conveying channel for the guide wire sheath operation, a stretching mechanism is arranged outside the Y-shaped conveying pipe and is used for driving the head end of the Y-shaped conveying pipe to expand, a driving mechanism is arranged on the front face of the mouthpiece and is linked with the stretching mechanism, and a mounting mechanism is arranged on the front face of the mouthpiece. The Y-shaped conveying pipe is inserted in the form of a head end in a closed state, so as to reduce the discomfort of the head end of the Y-shaped conveying pipe to the trachea, and the stretching mechanism can expand the end of the inserted Y-shaped conveying pipe, so as to provide a Y-shaped conveying channel for the guide wire sheath and make the guide wire sheath operate.

Description

Technical Field

[0001] This invention relates to the field of medical devices, and in particular to an airway angiography guidewire and catheter kit for delivering airway stents. Background Technology

[0002] Airway stent implantation is an important interventional procedure for treating airway stenosis, obstruction, fistula and other diseases. By precisely delivering and releasing the stent to the lesion site, airway patency can be effectively restored and the patient's respiratory function can be improved. During the stent delivery process, the guidewire and catheter kit is the core instrument, and its structural design directly affects the safety, accuracy and patient comfort of the operation.

[0003] Currently, commonly used airway stent delivery devices in clinical practice mainly consist of basic components such as a mouthpiece, delivery tube, and guidewire sheath. The tip of existing delivery tubes is mostly a fixed shape structure, such as a Y-shaped bifurcation structure. During the insertion of the airway, it is often in a pre-deployed state. The edges of its Y-shaped bifurcation structure can easily cause friction or scratches to the airway mucosa, especially when passing through sensitive areas such as the glottis and carina, which may cause severe coughing, airway spasm, or mucosal bleeding, increasing patient suffering and surgical risks. Although some devices have attempted to use flexible materials to reduce trauma, the design of the tip retraction and deployment switching mechanism is insufficient, and it is impossible to achieve effective retraction during the insertion stage, still posing a high risk of mucosal damage.

[0004] Therefore, an airway angiography guidewire and catheter kit for delivering airway stents is proposed to solve or alleviate the above problems. Summary of the Invention

[0005] The purpose of this invention is to provide an airway angiography guidewire catheter kit for delivering airway stents, so as to solve the problems mentioned in the background art.

[0006] To achieve the above objectives, the present invention provides the following technical solution: a guidewire and catheter kit for delivering an airway stent, comprising: Biting lips; Y-shaped delivery tube, wherein the Y-shaped delivery tube is fitted inside the bite nozzle; A guide wire sheath is fitted inside a Y-shaped delivery tube, which provides a delivery channel for the guide wire sheath during operation. A stretching mechanism is disposed outside the Y-shaped conveying pipe, and the stretching mechanism is used to drive the head end of the Y-shaped conveying pipe to unfold. A drive mechanism is disposed on the front side of the bite, and the drive mechanism is linked with the stretching mechanism; The mounting mechanism is located on the front of the bite nozzle and is used to limit the installation of the Y-shaped delivery tube and the drive mechanism.

[0007] Preferably, the tensioning mechanism includes: A diaphragm layer is fixedly connected to the side of the Y-shaped conveying pipe, and a connecting chamber is formed between the diaphragm layer and the Y-shaped conveying pipe; A tension line, wherein the tension line is disposed inside the connecting chamber; A limiting member, wherein the limiting member is fixedly connected to one end of the outer wall of the stretching line; A positioning component is fixedly connected to the inside of the connecting chamber. A groove matching the stretching line is provided on one side of the positioning component, and a limiting component is located on one side of the positioning component. A connecting ball is fixedly connected to one end of the tension line, and the connecting ball is linked with the drive mechanism.

[0008] Preferably, the drive mechanism includes: The mounting block is mounted on the Y-shaped conveying pipe by a mounting mechanism; An extrusion frame is disposed on the front side of the mounting block, and the front side of the extrusion frame and the mounting block are provided with a first through hole corresponding to the Y-shaped conveying pipe. An extrusion rod, one end of which is fixedly connected to an extrusion frame, and the other end of which is equipped with a pressure sensor corresponding to the connecting ball; The mounting groove is formed on the mounting block, and the extrusion rod is slidably sleeved on one side of the inner cavity of the mounting groove; A guide plate is fixedly installed on the installation mechanism and slidably sleeved inside the installation groove. The front of the guide plate has a wiring groove corresponding to the stretching line.

[0009] Preferably, the drive mechanism further includes: A connecting rod, one end of which is fixedly connected to the extrusion frame, and a mounting hole corresponding to the connecting rod is provided on the front side of the mounting block; A limiting collar is fixedly sleeved at the end of the mounting hole cavity, and the outer wall of the connecting rod is slidably sleeved with the limiting collar. A fixing collar is fixedly sleeved on the outside of the connecting rod, and the fixing collar is slidably sleeved on the inside of the mounting hole; A limiting spring is slidably sleeved on the outside of the connecting rod. The limiting spring is located on the back of the fixed collar, and one end of the limiting spring is pressed and fitted against the limiting collar.

[0010] Preferably, the mounting mechanism includes: A restraint frame, which is fixedly installed on the front of the mouthpiece; Mounting housing, which is fitted inside the restraint frame; A cover plate is provided on the front side of the mounting housing. Both the cover plate and the back side of the mounting housing are provided with a second through hole corresponding to the Y-shaped conveying pipe. The mounting block is fixedly installed on the front side of the cover plate. An elastic element, which snaps into the interior of the mounting housing; A positioning component is disposed inside the mounting housing, and the positioning component locks the Y-shaped delivery pipe in place by means of an elastic element; A locking assembly is disposed on the mounting housing, and the locking assembly is used to lock the cover and the connecting rod by means of an elastic element.

[0011] Preferably, the positioning component includes: A silicone sleeve is fixedly fitted onto the outside of a Y-shaped conveying pipe, and an arc groove is formed on the outer wall of the silicone sleeve. An arc-shaped plate, wherein the arc-shaped plate is installed inside the mounting housing by an elastic element; A snap-fit ​​component is fixedly connected to the inner side of the arc plate, and the outer wall of the snap-fit ​​component is slidably snapped into the inner cavity of the arc groove. A snap-fit ​​groove is formed on the side of the arc plate.

[0012] Preferably, the locking component includes: A connecting column, the outer wall of which is slidably inserted into the mounting housing, and one end of the outer wall of the connecting column is slidably engaged with an elastic element; A locking block, which is fixedly connected to one side of the elastic element and corresponds to the connecting post; A positioning disc is fixedly connected to the end of a connecting rod. A third through hole corresponding to the positioning disc is opened on the front side of the cover. The locking block is engaged with the front side of the positioning disc. The side plate is snapped into the inside of the restraint frame, and the end of the connecting column is fixedly connected to the side plate.

[0013] Preferably, the locking component further includes: A fixed frame is fixedly connected to the interior of the mounting housing; A connecting plate, one end of which is fixedly connected to the plate cover, and the outer wall of the connecting plate is slidably sleeved with the fixed frame; The positioning hole is located on one side of the connecting plate and one side of the fixed frame, and the outer wall of the connecting column is slidably sleeved with the inner cavity of the positioning hole.

[0014] Preferably, the elastic element includes: The arc-shaped portion is bent into shape at the end of the elastic member, and the arc-shaped portion is slidably engaged with the inside of the engagement groove; A socket cavity is formed on an elastic element, and an mounting plate is fixedly connected inside the mounting housing. The outer wall of the mounting plate is slidably engaged with the socket cavity. An energy storage section is formed on the side of an elastic member.

[0015] Preferably, the elastic element further includes: A recessed portion is formed in the middle of one side of the elastic member, and one end of the outer wall of the connecting column is sleeved inside the recessed portion; The protrusion is formed on the side of the inner wall of the recess, and the end of the outer wall of the connecting column is symmetrically provided with locking grooves, and the protrusion is engaged with the inside of the locking groove.

[0016] The technical effects and advantages of this invention are as follows: (1) The present invention utilizes the combined use of a mouthpiece, a Y-shaped delivery tube, a guide wire sheath, and a tensioning mechanism. When the Y-shaped delivery tube is inserted, the head end of the Y-shaped delivery tube is in a closed state to reduce the discomfort caused to the trachea by the head end of the Y-shaped delivery tube. The tensioning mechanism can expand the end of the inserted Y-shaped delivery tube to provide a Y-shaped delivery channel for the guide wire sheath, so that the guide wire sheath can perform its operation. (2) The present invention utilizes the combined use of Y-shaped conveying pipe, stretching mechanism, driving mechanism and installation mechanism. The driving mechanism can drive the stretching mechanism to perform operations, so that the stretching mechanism drives the head end of the Y-shaped conveying pipe to unfold. The driving mechanism and the installation mechanism are linked, that is, the installation mechanism can not only install and limit the Y-shaped conveying pipe and the driving mechanism, but also brake the driving mechanism, so that the head end of the Y-shaped conveying pipe is in a stable unfolded state. Attached Figure Description

[0017] Figure 1 This is a schematic diagram of the overall structure of the present invention; Figure 2 This is a schematic diagram of the internal structure of the Y-shaped delivery pipe section of the present invention from the front. Figure 3 For the present invention Figure 2 Enlarged structural diagram at point A in the middle; Figure 4 This is a schematic diagram of the internal structure of part of the invention from a top view.

[0018] Figure 5 This is a top-view schematic diagram of the internal structure of the mounting block portion of the present invention; Figure 6 This is a schematic diagram of the internal structure of the side of the mounting housing of the present invention; Figure 7 This is a schematic diagram of the internal structure of the mounting housing of the present invention. Figure 8 This is a schematic diagram of the internal structure of the arc plate portion of the present invention.

[0019] Figure 9 This is a schematic diagram of the front structure of the elastic element of the present invention; Figure 10 This is a schematic diagram of the overall structure of the arc plate of the present invention; Figure 11 This is a schematic diagram of the overall structure of the connecting column of the present invention.

[0020] In the diagram: 1. Biting nozzle; 2. Y-shaped delivery tube; 3. Guide wire sheath; 4. Tensioning mechanism; 41. Diaphragm layer; 42. Tensioning wire; 43. Limiting component; 44. Positioning component; 45. Connecting ball; 5. Drive mechanism; 51. Mounting block; 52. Extrusion frame; 53. Extrusion rod; 54. Mounting groove; 55. Guide plate; 56. Cable tray; 57. Connecting rod; 58. Limiting collar; 59. Fixing collar; 510. Limiting spring; 6. Mounting mechanism; 61. Restraint frame; 62. Mounting shell 63. Body; 64. Cover; 65. Elastic element; 661. Arc portion; 67. Sleeve chamber; 68. Energy storage portion; 69. Recessed portion; 60. Protruding portion; 61. Locking groove; 62. Positioning assembly; 63. Silicone sleeve; 64. Arc plate; 65. Snap-fit ​​element; 66. Snap-fit ​​groove; 67. Locking assembly; 68. Connecting post; 69. Locking block; 60. Positioning disc; 61. Side plate; 62. Fixing frame; 63. Connecting plate; 64. Mounting plate. Detailed Implementation

[0021] The technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0022] This invention provides, for example Figures 1-11 The image shows an airway angiography guidewire and catheter kit for delivering airway stents.

[0023] Example 1: Includes a mouthpiece 1, a Y-shaped delivery tube 2, a guidewire sheath 3, a tensioning mechanism 4, a driving mechanism 5, and an installation mechanism 6. The Y-shaped delivery tube 2 is fitted inside the mouthpiece 1. The mouthpiece 1 consists of a silicone tube, a plate, and a strap. The silicone tube is placed in the patient's mouth, keeping the mouth open. The strap and plate ensure the stability of the silicone tube in the patient's mouth. The guidewire sheath 3 is fitted inside the Y-shaped delivery tube 2. The Y-shaped delivery tube 2 provides a delivery channel for the guidewire sheath 3; that is, the head end of the Y-shaped delivery tube 2 has two channels arranged side by side. Under the action of the tensioning mechanism 4, the head end of the Y-shaped delivery tube 2 can be unfolded into a Y shape, thus providing two bronchial channels for the guidewire sheath 3 to be inserted into the patient's trachea for guidewire insertion. The guide wire sheath 3 is existing technology and will not be described in detail here. The tensioning mechanism 4 is located outside the Y-shaped delivery tube 2. The tensioning mechanism 4 is used to drive the head end of the Y-shaped delivery tube 2 to unfold. The driving mechanism 5 is located on the front of the mouthpiece 1. The driving mechanism 5 and the tensioning mechanism 4 are linked. When the Y-shaped delivery tube 2 is inserted, the head end of the Y-shaped delivery tube 2 is in a closed state in its natural state, thereby avoiding the head end of the Y-shaped delivery tube 2 from scratching the trachea. That is, the driving mechanism 5 can unfold the head end of the Y-shaped delivery tube 2 into a Y shape through the tensioning mechanism 4, so as to facilitate the branching and guiding operation of the guide wire sheath 3. The mounting mechanism 6 is located on the front of the mouthpiece 1. The mounting mechanism 6 is used to limit the installation of the Y-shaped delivery tube 2 and the driving mechanism 5, thereby ensuring the stability of the positions of the Y-shaped delivery tube 2 and the driving mechanism 5.

[0024] In particular, the stretching mechanism 4 includes a diaphragm layer 41, a stretching line 42, a limiting member 43, a positioning member 44, and a connecting ball 45. The diaphragm layer 41 is fixedly connected to the side of the Y-shaped conveying pipe 2, forming a connecting chamber between the diaphragm layer 41 and the Y-shaped conveying pipe 2. The stretching line 42 is disposed inside the connecting chamber. The limiting member 43 is fixedly connected to one end of the outer wall of the stretching line 42. The positioning member 44 is fixedly connected to the inside of the connecting chamber. A groove matching the stretching line 42 is formed on one side of the positioning member 44. The limiting member 43 is located on one side of the positioning member 44. Figure 3 As shown, the limiting member 43 and the positioning member 44 are arranged at intervals. When the tension line 42 on both sides of the Y-shaped conveying pipe 2 is pulled, the two pipes at the head end of the Y-shaped conveying pipe 2 can be bent in opposite directions, so that the head end of the Y-shaped conveying pipe 2 can be unfolded. The connecting ball 45 is fixedly connected to one end of the tension line 42. The connecting ball 45 and the driving mechanism 5 are linked. That is, the driving mechanism 5 synchronously squeezes the two connecting balls 45, so that the tension line 42 on both sides of the Y-shaped conveying pipe 2 can be pulled synchronously.

[0025] Furthermore, the drive mechanism 5 includes a mounting block 51, an extrusion frame 52, an extrusion rod 53, a mounting groove 54, and a guide plate 55. The mounting block 51 is mounted on the Y-shaped conveying pipe 2 via the mounting mechanism 6. The extrusion frame 52 is located on the front side of the mounting block 51. The front sides of the extrusion frame 52 and the mounting block 51 have a first through hole corresponding to the Y-shaped conveying pipe 2. One end of the extrusion rod 53 is fixedly connected to the extrusion frame 52, and the other end of the extrusion rod 53 is equipped with a pressure sensor corresponding to the connecting ball 45. Thus, when the extrusion rod 53 extrudes the connecting ball 45, the pressure sensor can detect... The elastic extrusion force on the connecting ball 45 is transmitted by a pressure sensor via wireless transmission technology to an external control terminal. The control terminal then uses recorded analysis and judgment logic to determine whether the Y-shaped conveying pipe 2 is properly installed, thereby determining the tension force on the stretching wire 42. The mounting groove 54 is located on the mounting block 51. The extrusion rod 53 is slidably sleeved on one side of the inner cavity of the mounting groove 54. The guide plate 55 is fixedly installed on the mounting mechanism 6 and slidably sleeved inside the mounting groove 54. The front of the guide plate 55 has a wiring groove 56 corresponding to the stretching wire 42. Figure 5 As shown, the guide plate 55 can not only guide and limit the stretching line 42, but also bind and limit the connecting ball 45. By pressing the extrusion frame 52, the extrusion frame 52 can drive the two extrusion rods 53 to move towards the inside of the mounting groove 54. This causes the two extrusion rods 53 to push the two connecting balls 45 to move, which in turn causes the connecting balls 45 to pull the stretching line 42 to move. This allows the stretching lines 42 on both sides of the Y-shaped conveying pipe 2 to work synchronously. Furthermore, by pressing the extrusion frame 52 to drive the stretching line 42 to move, it is not only convenient to operate when inserting the Y-shaped conveying pipe 2, but also allows the two stretching lines 42 to move synchronously.

[0026] Furthermore, the drive mechanism 5 also includes a connecting rod 57, a limiting collar 58, a fixing collar 59, and a limiting spring 510. One end of the connecting rod 57 is fixedly connected to the extrusion frame 52. The front of the mounting block 51 has a mounting hole corresponding to the connecting rod 57. The limiting collar 58 is fixedly sleeved on the end of the inner cavity of the mounting hole. The outer wall of the connecting rod 57 is slidably sleeved with the limiting collar 58. The connecting rod 57 and the limiting collar 58 can guide the extrusion frame 52 to ensure the stability of the extrusion frame 52's movement on the front of the mounting block 51. The fixing collar 59 is fixedly sleeved on the outside of the connecting rod 57 and slidably sleeved on the inside of the mounting hole. The limiting spring 510 is slidably sleeved on the outside of the connecting rod 57 and is located on the fixing collar. On the back of 59, one end of the limiting spring 510 is pressed against the limiting collar 58. The limiting spring 510 can provide the extrusion frame 52 with a spring force away from the mounting block 51 through the fixing collar 59 and the connecting rod 57. Thus, when installing the Y-shaped conveying pipe 2, and when it is necessary to keep the head end of the Y-shaped conveying pipe 2 in a retracted state, the extrusion frame 52 can be kept in a stable state and separated from the mounting block 51, preventing the extrusion frame 52 from shaking. After the extrusion rod 53 presses the connecting ball 45 and the head end of the Y-shaped conveying pipe 2 is unfolded by pressing the extrusion frame 52, the components on the mounting mechanism 6 lock the connecting rod 57, so that the extrusion frame 52 and the extrusion rod 53 are in a stable state and limit the connecting ball 45, thereby ensuring the stability of the unfolded head end of the Y-shaped conveying pipe 2.

[0027] The analysis and judgment logic for detecting whether the Y-type delivery pipe 2 is installed correctly includes the following steps: S1: Based on the data detected by the pressure sensor, set the first interval threshold, the second interval threshold, and the safety threshold when the head end of the Y-type delivery tube 2 is unfolded. The first interval threshold is the range of pressure detected by the pressure sensor when the head end of the Y-type delivery tube 2 is unfolded and the Y-type delivery tube 2 is not inserted into the trachea. The second interval threshold is the range of pressure detected by the pressure sensor when the head end of the Y-type delivery tube 2 is unfolded and the Y-type delivery tube 2 is inserted into the trachea. The safety threshold is the value detected by the pressure sensor when the Y-type delivery tube 2 is located inside the trachea and the head end of the Y-type delivery tube 2 is unfolded, and the head end of the Y-type delivery tube 2 exerts maximum pressure on the inner wall of the trachea. S2: When using the Y-type conveying pipe 2, firstly, the extrusion frame 52 and the extrusion rod 53 extrude the connecting ball 45 to unfold the head end of the Y-type conveying pipe 2 and upload the value detected by the pressure sensor. Determine whether the value detected by the pressure sensor is within the first interval threshold. When the value detected by the pressure sensor is greater than the first interval threshold, the tension line 42 or the connecting ball 45 gets stuck, and the head end of the Y-type conveying pipe 2 fails to open normally. Replace with a new Y-type conveying pipe 2. When the value detected by the pressure sensor is less than the first interval threshold and the value detected by the pressure sensor approaches zero, the tension line 42 breaks, and the head end of the Y-type conveying pipe 2 fails to open normally. Replace with a new Y-type conveying pipe 2. When the value detected by the pressure sensor is within the first interval threshold, the Y-type conveying pipe 2 is qualified and can be used. S3: When the Y-shaped delivery tube 2 is inserted into the trachea and the head end of the Y-shaped delivery tube 2 is unfolded, the value detected by the pressure sensor is uploaded, and it is determined whether the value detected by the pressure sensor is within the second interval threshold. When the value detected by the pressure sensor is within the second interval threshold, the Y-shaped delivery tube 2 can be used to guide and deliver the guide wire sheath 3. When the guide wire sheath 3 is working, the value detected by the pressure sensor is judged in real time. S4: When the value detected by the pressure sensor is not within the second interval threshold, compare the value detected by the pressure sensor with the safety threshold. If the value detected by the pressure sensor is greater than the safety threshold, stop working on the guide wire sheath 3 and pull out the Y-shaped delivery tube 2 to avoid causing pressure damage to the inner wall of the trachea. S5: When the value detected by the pressure sensor is not within the second interval threshold, and the value detected by the pressure sensor is zero, the head end of the Y-type delivery tube 2 is squeezed by the inner wall of the air pipe, causing the tension line 42 to break. As a result, the head end of the Y-type delivery tube 2 cannot be unfolded normally. The Y-type delivery tube 2 should be removed and reinstalled.

[0028] Example 2: Based on Example 1, the mounting mechanism 6 includes a restraint frame 61, a mounting housing 62, a cover 63, an elastic element 64, a positioning component 65, and a locking component 66. The restraint frame 61 is fixedly mounted on the front of the bite 1, that is, the restraint frame 61 is fixedly connected to the front of the bite 1 component plate. The mounting housing 62 is sleeved inside the restraint frame 61. The cover 63 is located on the front of the mounting housing 62. The back of both the cover 63 and the mounting housing 62 are provided with a second through hole corresponding to the Y-shaped conveying pipe 2 to facilitate the installation of the Y-shaped conveying pipe 2. The mounting block 51 is fixedly mounted. On the front of the cover 63, the mounting block 51 is installed using fasteners and screws, allowing it to be installed or removed from the cover 63. The guide plate 55 is fixed to the front of the cover 63. When assembling the mounting block 51, mounting housing 62, and cover 63 with the Y-shaped conveying pipe 2, first, the mounting housing 62 and cover 63 are fitted onto the outside of the Y-shaped conveying pipe 2, and the tension line 42 is placed on the guide plate 55, with the connecting ball 45 at the end of the tension line 42 positioned on the side of the guide plate 55 away from the Y-shaped conveying pipe 2. Then, the mounting block 51 is fixedly installed on the cover 63. The front side is positioned so that the connecting ball 45 is located inside the mounting groove 54 and at the end of the extrusion rod 53, thereby completing the installation of the mounting block 51 and the extrusion frame 52. Its detachable assembly method allows the drive mechanism 5, mounting housing 62, and cover 63 to be reused after cleaning, disinfection, and other treatments, thus reducing material waste. The elastic element 64 is snapped into the interior of the mounting housing 62, and the positioning component 65 is located inside the mounting housing 62. The positioning component 65 locks the Y-shaped conveying pipe 2 in place via the elastic element 64, that is, under the action of the elastic element 64, the positioning component 65... Positioning component 65 can engage and restrain the Y-shaped conveying pipe 2, thereby ensuring the stability of the Y-shaped conveying pipe 2 and the mounting housing 62. Locking component 66 is provided on the mounting housing 62. Locking component 66 is used to engage and lock the plate cover 63 and the connecting rod 57 through elastic element 64. That is, under the action of elastic element 64, locking component 66 can lock the connecting rod 57, so that the extrusion frame 52 and extrusion rod 53 are in a stable state to extrude and limit the connecting ball 45. Under the action of elastic element 64 and restraining frame 61, the stability of the plate cover 63 installed on the front of the mounting housing 62 can be ensured.

[0029] Furthermore, the positioning component 65 includes a silicone sleeve 651, an arc plate 652, a snap-fit ​​element 653, and a snap-fit ​​groove 654. The silicone sleeve 651 is fixedly sleeved on the outside of the Y-shaped conveying tube 2, and the silicone sleeve 651 is located between the mounting housing 62 and the cover plate 63. Thus, the mounting housing 62 and the cover plate 63 can use the silicone sleeve 651 to snap and limit the Y-shaped conveying tube 2. The outer wall of the silicone sleeve 651 has an arc groove. The arc plate 652 is installed inside the mounting housing 62 through an elastic element 64. The snap-fit ​​element 653 is fixedly connected to the arc plate 651. On the inner side of 2, the outer wall of the snap-fit ​​653 slides and snaps into the inner cavity of the arc groove. The snap-fit ​​groove 654 is opened on the side of the arc plate 652. The arc plate 652 and the snap-fit ​​653 can be installed inside the mounting housing 62 through the elastic member 64, so that the snap-fit ​​653 can limit the silicone sleeve 651 again, thereby limiting the orientation of the Y-type delivery tube 2, avoiding the angular deviation of the Y-type delivery tube 2 relative to the mounting housing 62 and the mounting block 51, and also ensuring the accuracy of the orientation of the head end after the Y-type delivery tube 2 is inserted into the trachea.

[0030] Furthermore, the locking assembly 66 includes a connecting post 661, a locking block 662, a positioning disc 663, a side plate 664, a fixing frame 665, a connecting plate 666, and a positioning hole. The outer wall of the connecting post 661 is slidably inserted into the mounting housing 62, and one end of the outer wall of the connecting post 661 is slidably engaged with the elastic element 64, that is, the elastic element 64 can limit the connecting post 661. The locking block 662 is fixedly connected to one side of the elastic element 64 and corresponds to the connecting post 661. The positioning disc 663 is fixedly connected to the end of the connecting rod 57. The front of the cover 63 has a third through hole corresponding to the positioning disc 663. The locking block 662 is engaged with the front of the positioning disc 663. The locking block 662 can limit the extrusion frame 52 through the positioning disc 663 and the connecting rod 57, thereby keeping the extrusion frame 52 and the extrusion rod 53 in a stable state to limit the connecting ball 45, so as to ensure the stability of the unfolding of the Y-shaped conveying pipe 2. The side plate 664 is engaged with the inside of the binding frame 61. The end of the connecting column 661 is fixedly connected to the side plate 664, and the side plate 664 is away from the mounting housing 6. A rubber pad is fixedly connected to one side of the 2, thereby increasing the friction between the side plate 664 and the inner wall of the restraint frame 61. The side plate 664 is snapped into the inside of the restraint frame 61. This not only allows the side plate 664 to drive the connecting column 661 and the locking block 662 to lock the positioning disc 663, but also limits the side plate 664, the mounting housing 62 and the cover 63, thereby ensuring the stability of the Y-shaped delivery tube 2 relative to the mouthpiece 1, and thus ensuring the stability of the Y-shaped delivery tube 2 inserted into the patient's trachea. The fixing frame 665 is fixedly connected to the inner wall of the mounting housing 62. The connecting plate 666 is fixedly connected to the cover 63 at one end. The outer wall of the connecting plate 666 is slidably sleeved with the fixed frame 665. The positioning hole is opened on one side of the connecting plate 666 and one side of the fixed frame 665. The outer wall of the connecting post 661 is slidably sleeved with the inner cavity of the positioning hole. That is, the connecting post 661 can lock and limit the connecting plate 666, thereby ensuring the stability of the cover 63 installed on the front of the mounting housing 62. Pulling out the connecting post 661 can separate the connecting plate 666 from the fixed frame 665, thereby separating the cover 63 from the mounting housing 62.

[0031] In particular, the elastic member 64 includes an arcuate portion 641, a sleeve cavity 642, an energy storage portion 643, a recessed portion 644, and a protruding portion 645, such as Figure 9 As shown, the arcuate portion 641, the sleeve cavity 642, the energy storage portion 643, the recessed portion 644, and the protruding portion 645 on the elastic member 64 are all formed by bending an elastic plate. The arcuate portion 641 is bent into shape at the end of the elastic member 64, and the arcuate portion 641 is slidably engaged inside the engaging groove 654, as shown. Figure 7 and Figure 8As shown, the arcuate portion 641 at the end of the elastic member 64 can engage and limit the arcuate plate 652, and conversely, the arcuate plate 652 can also engage and limit both ends of the elastic member 64, ensuring the stability of the elastic member 64 when it is sleeved on the outside of the mounting plate 67 through the sleeve cavity 642. The sleeve cavity 642 is formed on the elastic member 64. The mounting plate 67 is fixedly connected inside the mounting housing 62. The outer wall of the mounting plate 67 is slidably engaged with the sleeve cavity 642. The energy storage portion 643 is formed on the side of the elastic member 64. The energy storage portion 643 can store a certain amount of elastic potential energy, so that when the connecting column 661 squeezes the elastic member 64, the energy storage portion 643 can store a certain amount of elastic potential energy. 43. Bending can store elastic potential energy. When the side plate 664 slides out from inside the restraint frame 61, the elastic member 64 can use the potential energy stored in the energy storage part 643 to eject the connecting post 661 and separate the locking block 662 from the positioning disc 663, thereby releasing the locking state of the compression frame 52. The recessed part 644 is formed in the middle of one side of the elastic member 64. One end of the outer wall of the connecting post 661 is sleeved inside the recessed part 644. The protruding part 645 is formed on the side of the inner wall of the recessed part 644. The end of the outer wall of the connecting post 661 is symmetrically provided with locking grooves 646. The protruding part 645 is engaged inside the locking groove 646. Figure 8 , Figure 9 and Figure 11 As shown, when the connecting post 661 moves toward the interior of the mounting housing 62, the connecting post 661 can be inserted into the interior of the recess 644, and the protrusion 645 engages with the locking groove 646 on the connecting post 661, thereby ensuring the stability of the engagement between the connecting post 661 and the elastic member 64. Furthermore, by pulling the connecting post 661 toward the exterior of the mounting housing 62, the connecting post 661 and the elastic member 64 can be separated, thus facilitating the installation or removal of the connecting post 661 and the elastic member 64.

[0032] Finally, it should be noted that the above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. Although the present invention has been described in detail with reference to the foregoing embodiments, those skilled in the art can still modify the technical solutions described in the foregoing embodiments or make equivalent substitutions for some of the technical features. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present invention should be included within the protection scope of the present invention.

Claims

1. A set of airway angiography guidewires and catheters for delivering airway stents, characterized in that, include: Biting mouth (1); Y-shaped delivery tube (2), which is sleeved inside the bite nozzle (1); The guide wire sheath (3) is fitted inside the Y-shaped delivery tube (2), which provides a delivery channel for the operation of the guide wire sheath (3). A stretching mechanism (4) is provided outside the Y-shaped conveying pipe (2), and the stretching mechanism (4) is used to drive the head end of the Y-shaped conveying pipe (2) to unfold. The driving mechanism (5) is located on the front of the bite (1) and is linked with the stretching mechanism (4); The mounting mechanism (6) is located on the front of the bite (1) and is used to limit the installation of the Y-shaped delivery tube (2) and the drive mechanism (5). The tensioning mechanism (4) includes: A diaphragm layer (41) is fixedly connected to the side of the Y-shaped conveying pipe (2), and a connecting chamber is formed between the diaphragm layer (41) and the Y-shaped conveying pipe (2); A tension line (42) is disposed inside the connecting chamber; A limiting member (43) is fixedly connected to one end of the outer wall of the stretching line (42); Positioning component (44) is fixedly connected to the inside of the connecting chamber. A groove matching the stretching line (42) is provided on one side of the positioning component (44). The limiting component (43) is located on one side of the positioning component (44). A connecting ball (45) is fixedly connected to one end of the tension line (42). The connecting ball (45) is linked with the driving mechanism (5). The driving mechanism (5) includes: Mounting block (51), which is mounted on Y-shaped conveying pipe (2) by mounting mechanism (6); The extrusion frame (52) is disposed on the front side of the mounting block (51), and the extrusion frame (52) and the mounting block (51) have a first through hole corresponding to the Y-shaped conveying pipe (2) on their front sides; The extrusion rod (53) has one end fixedly connected to the extrusion frame (52), and the other end of the extrusion rod (53) is equipped with a pressure sensor corresponding to the connecting ball (45). The mounting groove (54) is formed on the mounting block (51), and the extrusion rod (53) is slidably sleeved on one side of the inner cavity of the mounting groove (54); Guide plate (55), the guide plate (55) is fixedly installed on the installation mechanism (6), the guide plate (55) is slidably sleeved in the interior of the installation groove (54), and the front of the guide plate (55) is provided with a wiring groove (56) corresponding to the stretching line (42). A connecting rod (57) is fixedly connected at one end to the extrusion frame (52), and the mounting block (51) has a mounting hole on the front corresponding to the connecting rod (57); A limiting collar (58) is fixedly sleeved at the end of the mounting hole cavity, and the outer wall of the connecting rod (57) is slidably sleeved with the limiting collar (58). A fixing collar (59) is fixedly sleeved on the outside of the connecting rod (57), and the fixing collar (59) is slidably sleeved on the inside of the mounting hole; A limiting spring (510) is slidably sleeved on the outside of the connecting rod (57). The limiting spring (510) is located on the back of the fixing collar (59). One end of the limiting spring (510) is pressed and adhered to the limiting collar (58).

2. The airway angiography guidewire and catheter kit for delivering an airway stent according to claim 1, characterized in that, The installation mechanism (6) includes: A restraint frame (61) is fixedly installed on the front of the mouthpiece (1); Mounting housing (62), which is fitted inside the restraint frame (61); The cover (63) is located on the front side of the mounting housing (62). The back side of both the cover (63) and the mounting housing (62) is provided with a second through hole corresponding to the Y-shaped conveying pipe (2). The mounting block (51) is fixedly installed on the front side of the cover (63). An elastic element (64) is snapped into the interior of the mounting housing (62); Positioning component (65), which is disposed inside the mounting housing (62), and which engages and locks the Y-shaped delivery tube (2) by means of elastic element (64); A locking assembly (66) is disposed on the mounting housing (62), and the locking assembly (66) is used by an elastic element (64) to engage and lock the cover (63) and the connecting rod (57).

3. The airway angiography guidewire and catheter kit for delivering an airway stent according to claim 2, characterized in that, The positioning component (65) includes: A silicone sleeve (651) is fixedly fitted onto the outside of the Y-shaped conveying pipe (2), and an arc groove is provided on the outer wall of the silicone sleeve (651). Arc plate (652), said arc plate (652) is installed inside the mounting housing (62) by means of elastic element (64); A snap-fit ​​component (653) is fixedly connected to the inner side of the arc plate (652), and the outer wall of the snap-fit ​​component (653) is slidably snapped into the inner cavity of the arc groove. A snap-fit ​​groove (654) is provided on the side of the arc plate (652).

4. The airway angiography guidewire and catheter kit for delivering an airway stent according to claim 3, characterized in that, The locking component (66) includes: A connecting post (661) is provided, the outer wall of which is slidably inserted into the mounting housing (62), and one end of the outer wall of the connecting post (661) is slidably engaged with an elastic element (64). Locking block (662), which is fixedly connected to one side of elastic member (64), and which corresponds to connecting post (661); Positioning disc (663), the positioning disc (663) is fixedly connected to the end of the connecting rod (57), the front of the cover (63) is provided with a third through hole corresponding to the positioning disc (663), and the locking block (662) is engaged with the front of the positioning disc (663); Side plate (664), which is snapped into the inside of the restraint frame (61), and the end of the connecting column (661) is fixedly connected to the side plate (664).

5. The airway angiography guidewire and catheter kit for delivering an airway stent according to claim 4, characterized in that, The locking component (66) further includes: A fixed frame (665) is fixedly connected to the interior of the mounting housing (62); A connecting plate (666) is fixedly connected at one end to a cover plate (63), and the outer wall of the connecting plate (666) is slidably sleeved with a fixed frame (665). The positioning hole is located on one side of the connecting plate (666) and one side of the fixed frame (665), and the outer wall of the connecting column (661) is slidably sleeved with the inner cavity of the positioning hole.

6. The airway angiography guidewire and catheter kit for delivering an airway stent according to claim 5, characterized in that, The elastic element (64) includes: The arc portion (641) is bent into shape at the end of the elastic member (64), and the arc portion (641) is slidably engaged in the inside of the engagement groove (654); A socket (642) is formed on an elastic member (64). An mounting plate (67) is fixedly connected inside the mounting housing (62). The outer wall of the mounting plate (67) is slidably engaged with the socket (642). Energy storage section (643) is formed on the side of elastic member (64).

7. The airway angiography guidewire and catheter kit for delivering an airway stent according to claim 6, characterized in that, The elastic element (64) further includes: A recess (644) is formed in the middle of one side of the elastic member (64), and one end of the outer wall of the connecting post (661) is sleeved inside the recess (644). The protrusion (645) is formed on the side of the inner wall of the recess (644), and the end of the outer wall of the connecting column (661) is symmetrically provided with locking grooves (646), and the protrusion (645) is engaged in the interior of the locking groove (646).

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