Disposable airtight rigid bronchoscope

Abstract

The present application relates to bronchoscope technical field, specifically speaking, it is a kind of disposable anti-leakage hard bronchoscope;By setting sleeve 1, cylindrical tube, breathing machine interface and operation channel;Installation tube is folded down to fold air bag, fold air bag structure is like bellows structure in prior art, gas in fold air bag is extruded, so that the gas in fold air bag enters annular sealing ring, in turn, annular sealing ring is inflated, until block two moves to the right angle bending of L-shaped groove two, then medical staff rotates short connection tube, so that block two rotates to the end of L-shaped groove two parallel to horizontal plane, in turn, block two is fixed to installation tube, in this process, annular sealing ring is inflated, so that the outer wall of installation tube and the inner wall of short connection tube are sealed, in turn, avoid the problem that gas leaks from operation channel when supplying oxygen to cannula.

Description

Technical Field

[0001] This invention relates to the field of bronchoscopy technology, specifically a disposable, leak-proof rigid bronchoscopy. Background Technology

[0002] A rigid bronchoscope is an interventional device made of metal with a rigid lumen, used for airway examination and treatment. It is inserted into the patient's airway (trachea, main bronchus, and lobar bronchus) through the mouth or nose. Its core purpose is to provide precise intervention for airway diseases and to serve as an emergency rescue tool. It complements the flexible bronchoscope and is one of the core devices in interventional respiratory medicine, thoracic surgery, and emergency medicine.

[0003] Rigid bronchoscopy must be performed under general anesthesia and endotracheal intubation. It is completed by doctors in interventional pulmonology, anesthesiologists and nurses. The core process is divided into five stages: preoperative preparation, airway establishment, endoscope insertion, examination and endoscope removal and resuscitation. Each step must strictly follow the principles of safety first and ventilation guarantee.

[0004] Especially after a rigid bronchoscope is inserted into the trachea, the procedure must be performed inside the airway and often requires general anesthesia (or sedation). The patient's spontaneous breathing ability may be weakened, and ventilation becomes assisted by the device. If the operating channel is not sealed, oxygen or anesthetic gas may leak from the gaps, potentially leading to insufficient airway pressure and alveolar hypoxia during mechanical ventilation. When the endoscope needs to be inserted into the trachea through the operating channel, an inlet tube is usually used. The inlet tube is installed on the operating channel, and then the endoscope is installed into the inlet tube. In this process, the inlet tube and the operating channel are often connected by a locking mechanism, and the endoscope is also connected by a locking mechanism in the inlet tube. Both are rigid connections, which may lead to loose connections and leakage at the connection point when oxygen is supplied.

[0005] In summary, to solve the technical problems raised in this paper, this invention proposes a disposable, leak-proof rigid bronchoscope. Summary of the Invention

[0006] To address the aforementioned issues where the installation methods for the inlet tube and operating channel are mostly fixed by clamps, and the installation of the endoscope within the inlet tube also uses a clamp-lock connection—both rigid connections—which can lead to loose connections and leaks during oxygen supply, this invention proposes a disposable, leak-proof rigid bronchoscope. This bronchoscope includes a cannula, a cylindrical tube, a ventilator interface, an operating channel, an inlet tube, and a strip-shaped observation endoscope. The cannula has a side hole on its outer side. The cylindrical tube is perpendicular to the cannula, with one end serving as a light guide interface and the other as an anesthetic gas interface. The ventilator interface is angled and connected to the cylindrical tube. The operating channel is located on the cylindrical tube and communicates with it, with its interior corresponding to the interior of the cannula via the cylindrical tube. The inlet tube is movably mounted on the operating channel. The strip-shaped observation endoscope is movably mounted within the inlet tube. The bronchoscope also includes:

[0007] Connector 1 is located at the end of the operating channel away from the cylindrical tube, and a rubber sealing ring is provided on the outside of connector 1. The inside of the rubber sealing ring is hollow. An L-shaped groove is provided on connector 1.

[0008] The extended connecting pipe is located at the end of the inlet pipe near the cylindrical pipe, and the inner diameter of the extended connecting pipe is the same as the outer diameter of the connecting pipe 1. The extended connecting pipe is equipped with a retaining block 1 inside; when the inlet pipe is installed on the connecting pipe 1, the retaining block 1 enters the L-shaped groove 1.

[0009] A short-connector tube is rotatably connected to the end of the inlet tube away from the long-connector tube. A second locking block is provided inside the short-connector tube. A folded airbag is provided on the inner wall of the short-connector tube. The folded airbag is annular. An annular plate is provided at the upper end of the folded airbag. The folded airbag is located below the second locking block. An annular groove is opened on the inner wall of the short-connector tube. The annular groove is located above the second locking block. An annular sealing ring with an internal hollow structure is provided inside the annular groove. The interior of the annular sealing ring is connected to the interior of the folded airbag.

[0010] The mounting tube is positioned above the strip-shaped observation lens. The outer circumference of the mounting tube has an L-shaped groove. When the strip-shaped observation lens is inserted into the sleeve, the mounting tube enters the inside of the short-connection tube, and at the same time, the locking block enters the L-shaped groove.

[0011] As a preferred embodiment of this application, the upper end of the annular plate is uniformly provided with arc-shaped grooves, and the two sides of the arc-shaped grooves are chamfered. The lower end of the mounting tube is uniformly provided with arc-shaped blocks, and the two sides of the arc-shaped blocks are chamfered. When the mounting tube enters the interior of the short-connecting tube, the arc-shaped blocks are embedded in the arc-shaped grooves.

[0012] As a preferred embodiment of this application, the inside of the first connecting pipe is provided with a sliding groove, which is annular and communicates with the middle of the first L-shaped groove. An annular sealing block is slidably connected inside the sliding groove. A spring is provided between the annular sealing block and the lower end of the sliding groove. A rectangular notch is provided at the upper end of the annular sealing block, which is the same size as the opening at the upper end of the first L-shaped groove. Furthermore, a through groove is provided at the lower end of the sliding groove, which communicates with the inside of the rubber sealing ring.

[0013] As a preferred embodiment of this application, the inner part of the connecting pipe 1 is slidably connected to a central tube. The lower end of the central tube passes through the cylindrical tube and is slidably connected to the inner wall of the sleeve. The upper end of the central tube is provided with a groove. The size of the groove is the same as the size of the rectangular notch. When the locking block 1 moves downward, the locking block 1 is embedded in the groove. The outer wall of the central tube is provided with an annular groove. The inner wall of the annular groove passes through the central hole, and the part of the annular inner wall that does not pass through the central hole is provided with an arched piece. A ball is provided in the side hole on the outer side of the sleeve. The ball blocks the side hole. In the initial state, the ball is in contact with the arched piece. When the central tube rotates, the ball falls into the annular groove.

[0014] As a preferred embodiment of this application, the inner diameter of the side hole is bent inwards towards the inside of the sleeve, so that the side hole and the inside of the sleeve are arc-shaped transitions.

[0015] As a preferred embodiment of this application, one end of the arched piece is fixedly connected to the inner wall of the annular groove, and the other end of the arched piece is in contact with the inner wall of the annular groove.

[0016] As a preferred embodiment of this application, a vertical plate is provided inside the annular groove. When the central tube rotates, the ball falls into the annular groove, and then the vertical plate pushes the ball. An arc-shaped elastic plate is provided inside the side hole. In the initial state, the arc-shaped elastic plate is located on the side of the arched plate away from the vertical plate. When the arched plate moves to the gap between the arc-shaped elastic plate and the central tube, the end of the arc-shaped elastic plate away from the inner wall of the sleeve does not contact the arched plate.

[0017] As a preferred embodiment of this application, in the initial state, the end of the arched piece away from the inner wall of the annular groove is recessed, and the sphere is located in the recess of the arched piece.

[0018] The beneficial effects of this invention are as follows:

[0019] The installation tube presses down on the folded airbag, which has a structure similar to a bellows in existing technology. The gas inside the folded airbag is compressed. Because the folded airbag is connected to the annular sealing ring on the inner wall of the short-connecting tube through the gas delivery channel, the gas enters the annular sealing ring, causing it to expand. Since the annular sealing ring is located above the second locking block, it does not obstruct the ring until the second locking block moves to the right-angle bend of the L-shaped groove. Then, the medical staff rotates the short-connecting tube, causing the second locking block to rotate to the end of the L-shaped groove parallel to the horizontal plane, thus fixing the installation tube in place. During this process, the annular sealing ring expands, sealing the outer wall of the installation tube with the inner wall of the short-connecting tube, thus preventing gas leakage from the operating channel when supplying oxygen to the inside of the tube. Attached Figure Description

[0020] Figure 1 This is a three-dimensional view of the bronchoscope used in this invention;

[0021] Figure 2 This is a structural view of the central tube in this invention;

[0022] Figure 3 This is a top view of the shorting tube in this invention;

[0023] Figure 4 This is a structural view of the inlet tube in this invention;

[0024] Figure 5 This is a structural view of the pipe assembly 1 in this invention;

[0025] Figure 6 This is a structural view of the rectangular notch in this invention;

[0026] Figure 7 This is a structural view of the card slot in this invention;

[0027] Figure 8 This is an internal structural view of the short-connector tube in this invention;

[0028] Figure 9 This is a structural view of the folding airbag in this invention;

[0029] Figure 10 This is a structural view of the chute in this invention;

[0030] Figure 11 This is a structural view of the side hole in this invention;

[0031] In the diagram: 1. Tube; 2. Cylindrical tube; 3. Ventilator interface; 4. Operating channel; 5. Inlet tube; 6. Strip-shaped observation mirror; 11. Side hole; 41. Connector 1; 42. Rubber sealing ring; 43. L-shaped groove 1; 51. Long connector tube; 52. Locking block 1; 53. Short connector tube; 54. Locking block 2; 55. Folding airbag; 56. Annular plate; 57. Annular groove; 58. Annular sealing ring; 61. Installation tube; 62. L-shaped groove 2; 59. Arc groove; 63. Arc block; 44. Slide groove; 45. Annular sealing block; 46. Rectangular notch; 47. Through groove; 48. Central tube; 49. Locking groove; 481. Annular groove; 482. Arched piece; 483. Vertical plate; 13. Arc-shaped elastic piece. Detailed Implementation

[0032] To make the technical means, creative features, objectives and effects of this invention easier to understand, the invention will be further described below in conjunction with specific embodiments.

[0033] Example 1:

[0034] like Figures 1 to 11 As shown; a disposable, leak-proof rigid bronchoscope; the bronchoscope includes a cannula 1, a cylindrical tube 2, a ventilator interface 3, an operating channel 4, an inlet tube 5, and a strip-shaped observation endoscope 6; a side hole 11 is provided on the outer side of the cannula 1; the cylindrical tube 2 is perpendicular to the cannula 1, and one end of the cylindrical tube 2 is a light guide interface and the other end is an anesthetic gas interface; the ventilator interface 3 is obliquely disposed on the cylindrical tube 2 and communicates with the cylindrical tube 2; the operating channel 4 is disposed on the cylindrical tube 2 and communicates with the cylindrical tube 2, and the interior of the operating channel 4 corresponds to the interior of the cannula 1 through the cylindrical tube 2; the inlet tube 5 is movably installed on the operating channel 4; the strip-shaped observation endoscope 6 is movably installed in the inlet tube 5; the bronchoscope also includes:

[0035] Connector 41 is located at the end of the operating channel 4 away from the cylindrical tube 2, and a rubber sealing ring 42 is provided on the outside of connector 41. The inside of the rubber sealing ring 42 is hollow. An L-shaped groove 43 is provided on connector 41.

[0036] The extended connecting tube 51 is located at one end of the inlet tube 5 near the cylindrical tube 2, and the inner diameter of the extended connecting tube 51 is the same as the outer diameter of the connecting tube 41. The extended connecting tube 51 is provided with a retaining block 52 inside. When the inlet tube 5 is installed on the connecting tube 41, the retaining block 52 enters the L-shaped groove 43.

[0037] A short-connecting tube 53 is rotatably connected to the end of the inlet tube 5 away from the long-connecting tube 51. A second locking block 54 is provided inside the short-connecting tube 53. A folded airbag 55 is provided on the inner wall of the short-connecting tube 53. The folded airbag 55 is annular. An annular plate 56 is provided at the upper end of the folded airbag 55. The folded airbag 55 is located below the second locking block 54. An annular groove 57 is opened on the inner wall of the short-connecting tube 53. The annular groove 57 is located above the second locking block 54. An annular sealing ring 58 is provided inside the annular groove 57. The interior of the annular sealing ring 58 is connected to the interior of the folded airbag 55.

[0038] The mounting tube 61 is positioned above the strip-shaped observation lens 6. The outer ring of the mounting tube 61 has an L-shaped groove 62. When the strip-shaped observation lens 6 is inserted into the sleeve 1, the mounting tube 61 enters the interior of the short-connection tube 53, and at the same time, the locking block 54 enters the L-shaped groove 62.

[0039] The upper end of the annular plate 56 is uniformly provided with arc-shaped grooves 59, and the two sides of the arc-shaped grooves 59 are chamfered. The lower end of the mounting tube 61 is uniformly provided with arc-shaped blocks 63, and the two sides of the arc-shaped blocks 63 are chamfered. When the mounting tube 61 enters the interior of the short-connecting tube 53, the arc-shaped blocks 63 are embedded in the arc-shaped grooves 59.

[0040] The specific workflow is as follows;

[0041] When using the strip-shaped observation mirror 6, medical staff first connect the light guide interface and anesthetic gas interface to the corresponding light guide device and anesthetic device; then connect the ventilator interface 3 to the ventilator; next, insert the cannula 1 into the patient's airway; then install the inlet tube 5 on the operating channel 4. During this process, the medical staff install the extended connecting tube 51 on the inlet tube 5 onto the connecting tube 41. Specifically, since the outer diameter of the connecting tube 41 is the same as the inner diameter of the extended connecting tube 51, and the connecting tube 41 has a C-shaped groove and an L-shaped groove 43, the extended connecting tube... The tube 51 is equipped with a locking block 52. During installation, medical staff align the locking block with the L-shaped groove 43 and then install the connecting tube 41 into the extended connecting tube 51. During the process, the locking block 52 enters the L-shaped groove 43 until the locking block moves to the right angle bend of the L-shaped groove 43. Then, the medical staff rotates the connecting tube 5 to fix the locking block in place. The outer wall of the connecting tube 41 is equipped with a rubber sealing ring 42, which is located after the outer wall of the connecting tube 41 and the inner wall of the extended connecting tube 51, thus achieving a seal between the connecting tube 41 and the extended connecting tube 51.

[0042] Next, medical staff install the strip-shaped observation scope 6 into the inlet tube 5. During this process, it is important to note that when handling the strip-shaped observation scope 6, the strip-shaped portion is relatively fragile, so it is necessary to hold it by the installation tube 61 to avoid removing the observation end. Then, the medical staff inserts the strip-shaped observation scope 6 through the short-connection tube 53 of the inlet tube 5, allowing it to enter the operating channel 4 through the inlet tube. 4. The tube enters the cylindrical tube 2, then the sleeve 1, extending from the lower end of the sleeve 1 to observe the airway. During the installation of the strip-shaped observation mirror 6, the installation tube 61 enters the short-connection tube 53. During this process, the L-shaped groove 62 on the outer wall of the installation tube 61 is aligned with the locking block 54. Then, the installation tube 61 is pressed down, and the locking block 54 slides in the L-shaped groove 62. The arc-shaped block 63 at the lower end of the installation tube 61 enters the arc-shaped groove 59. The installation tube 61 is then continuously pressed down. The installation pipe 61 presses down on the folded airbag 55. The structure of the folded airbag 55 is similar to the bellows structure in the prior art. The gas in the folded airbag 55 is compressed. Since the folded airbag 55 is connected to the annular sealing ring 58 on the inner wall of the short-connecting pipe 53 through the air supply channel, the gas in the folded airbag 55 enters the annular sealing ring 58, thereby causing the annular sealing ring 58 to expand. And since the annular sealing ring 58 is located above the second locking block 54, the second locking block 54 will not press against the annular sealing ring 58. This creates an obstruction until the second locking block 54 moves to the right-angle bend of the second L-shaped groove 62. Then, the medical staff rotates the short-connecting tube 53, causing the second locking block 54 to rotate to one end of the second L-shaped groove 62 parallel to the horizontal plane, thereby fixing the second locking block 54 to the installation tube 61. During this process, the annular sealing ring 58 expands, sealing the outer wall of the installation tube 61 with the inner wall of the short-connecting tube 53, thus preventing gas leakage from the operating channel 4 when supplying oxygen to the inside of the sleeve 1.

[0043] Furthermore, after the installation tube 61 completes its movement, when medical personnel rotate the short-connecting tube 53, the annular plate 56 inside the short-connecting tube 53 rotates synchronously. This causes the arc-shaped groove 59 on the annular plate 56 to misalign with the arc-shaped block 63 at the lower end of the installation tube 61, allowing the arc-shaped block 63 to slide out of the arc-shaped groove 59. This causes the arc-shaped block 63 to press against the annular plate 56, which then moves downwards and presses against the folded airbag 55. The gas in the folded airbag 55 enters the annular sealing ring 58, which then expands again. The annular sealing ring 58 presses against the outer wall of the installation tube 61, making the connection between the short-connecting tube 53 and the installation tube 61 tighter and less likely to detach. It also increases the sealing performance between the short-connecting tube 53 and the installation tube 61, thereby preventing gas leakage from the sleeve 1.

[0044] Example 2:

[0045] like Figures 1 to 11 As shown; the inside of the connecting pipe 41 is provided with a sliding groove 44, which is annular and communicates with the middle of the L-shaped groove 43. An annular sealing block 45 is slidably connected inside the sliding groove 44. A spring is provided between the annular sealing block 45 and the lower end of the sliding groove 44. A rectangular notch 46 is provided at the upper end of the annular sealing block 45, which is the same size as the opening at the upper end of the L-shaped groove 43. A through groove 47 is provided at the lower end of the sliding groove 44, which communicates with the inside of the rubber sealing ring 42.

[0046] The specific workflow is as follows;

[0047] Based on the above embodiment one, a groove 44 is formed inside the connector 41, and the groove 44 is annular, so that the groove 44 is connected to the middle of the L-shaped groove 43, and the annular sealing block 45 is slidably connected inside the groove 44. A rectangular notch 46 is formed at the upper end of the annular sealing block 45, and the rectangular notch 46 is the same size as the upper opening of the L-shaped groove 43. Based on the above, when the extended connecting tube 51 is inserted into the connector 41, the locking block 52 inside the extended connecting tube 51 enters the L-shaped groove 43. During this process, the locking block 52 simultaneously enters the rectangular notch 46 at the upper end of the annular sealing block 45, so that when the locking block 52 slides downward in the L-shaped groove 43... The locking block 52 will simultaneously push the annular sealing block 45 downward. During this process, the spring between the annular sealing block 45 and the lower wall of the slide groove 44 is compressed, and the gas inside the slide groove 44 is also compressed. The gas inside the slide groove 44 enters the interior of the rubber sealing ring 42 through the through groove 47, and the rubber sealing ring 42 expands. After the rubber sealing ring 42 expands, it compresses the inner wall of the long connecting tube 51, thereby increasing the sealing performance between the connecting pipe 41 and the long connecting tube 51. Until the locking block 52 moves to the right angle bend of the L-shaped groove 43, the connecting tube 5 is rotated, so that the locking block 52 rotates in the L-shaped groove 43, thereby fixing the long connecting tube 51.

[0048] Example 3:

[0049] like Figures 1 to 11As shown; a central tube 48 is slidably connected inside the connecting pipe 41. The lower end of the central tube 48 passes through the cylindrical tube 2 and is slidably connected to the inner wall of the sleeve 1. A slot 49 is provided at the upper end of the central tube 48. The size of the slot 49 is the same as the size of the rectangular notch 46. When the locking block 52 moves downward, the locking block 52 is embedded in the slot 49. An annular groove 481 is provided on the outer wall of the central tube 48. The inner wall of the annular groove 481 passes through the central hole, and an arched piece 482 is provided on the part of the annular inner wall that does not pass through the central hole. A ball 12 is provided in the side hole 11 on the outside of the sleeve 1. The ball 12 blocks the side hole 11. In the initial state, the ball 12 is in contact with the arched piece 482. When the central tube 48 rotates, the ball 12 falls into the annular groove 481.

[0050] The inner diameter of the side hole 11 is bent inward into the sleeve 1, so that the side hole 11 and the inside of the sleeve 1 are arc-shaped transitions;

[0051] The specific workflow is as follows;

[0052] Based on the above embodiment 2, a central tube 48 is slidably connected to the inner wall of the connecting pipe 41, and the lower end of the central tube 48 is slidably connected to the inner wall of the sleeve 1 through the cylindrical tube 2. Two arc-shaped grooves 59 are opened at one end of the central tube 48 inside the cylindrical tube 2, so that the interior of the central tube 48 is connected to the interior of the cylindrical tube 2. Simultaneously, a slot 49 is opened at the upper end of the central tube 48, and the size of the slot 49 is the same as the size of the rectangular notch 46. When the locking block 52 moves downward, it enters the slot 49 when it reaches the right angle bend of the L-shaped groove 43. Then, when the inlet pipe 5 rotates, the locking block 52 rotates in the L-shaped groove 43 and is embedded in the slot 49, so that the locking block 52 can drive the central tube 48 to rotate.

[0053] In the initial state, a sphere 12 is placed in the side hole 11 on the outside of the cannula 1, and an annular groove 481 is opened on the outside of the central tube 48, so that part of the annular groove 481 penetrates the central hole. The part of the inner wall of the sliding groove 44 that does not penetrate the central hole is provided with an arched piece 482, so that the arched piece 482 supports the sphere 12. Thus, in the initial state, the sphere 12 is in the side hole 11, so that when medical personnel install the cannula 1, the hole in the side hole 11 on the cannula 1 is closed. This prevents tissue fluid in the human airway from entering the cannula 1 during installation. In tube 1, to avoid problems affecting the subsequent use of sleeve 1 and central tube 48; on the other hand, when the sphere 12 closes the side hole 11, a small part of the sphere 12 protrudes from the side hole 11, so that when the sleeve 1 is placed into the airway, since the human airway is uneven, the edge of the hole of the side hole 11 will scratch the human airway, so that the arc-shaped surface of the sphere 12 is in contact with the human airway, thus avoiding damage to the human airway; and the side hole 11 is recessed inward to further avoid the edge of the hole of the side hole 11 from scratching the human airway.

[0054] Based on the above, when the locking block 52 rotates laterally in the L-shaped groove 43, the locking block 52 drives the central tube 48 to rotate through the locking groove 49. When the central tube 48 rotates, the arched piece 482 inside the annular groove 481 rotates synchronously, so that the arched piece 482 no longer supports the sphere 12, causing the sphere 12 to fall into the annular groove 481. The annular groove 481 rotates with the central tube 48, causing the sphere 12 to fall into the annular groove 481, so that the sphere 12 is no longer closed in the side hole 11. At the same time, since part of the annular groove 481 penetrates the central tube 48, the gas that enters the central tube 48 through the anesthetic gas interface and the ventilator interface 3 can be discharged through the area of ​​the annular groove 481 penetrating the central tube 48 through the side hole 11, so that the sphere 12 does not affect the ventilation of the side hole 11.

[0055] Example 4:

[0056] like Figures 1 to 11 As shown; one end of the arched piece 482 is fixedly connected to the inner wall of the annular groove 481, and the other end of the arched piece 482 is in contact with the inner wall of the annular groove 481.

[0057] A vertical plate 483 is provided inside the annular groove 481. When the central tube 48 rotates, the ball 12 falls into the annular groove 481, and then the vertical plate 483 pushes the ball 12. An arc-shaped elastic piece 13 is provided inside the side hole 11. In the initial state, the arc-shaped elastic piece 13 is located on the side of the arched piece 482 away from the vertical plate 483. When the arched piece 482 moves to the gap between the arc-shaped elastic piece 13 and the central tube 48, the end of the arc-shaped elastic piece 13 away from the inner wall of the sleeve 1 does not contact the arched piece 482.

[0058] In the initial state, the end of the arched piece 482 away from the inner wall of the annular groove 481 is recessed, and the sphere 12 is located in the recess of the arched piece 482;

[0059] The specific workflow is as follows;

[0060] Based on the above embodiment three, the arched piece 482 is fixedly connected to the inner wall of the annular groove 481, and the other end of the arched piece 482 is in contact with the inner wall of the annular groove 481. When the arched piece 482 supports the sphere 12, if the sphere 12 squeezes the arched piece 482 as the arched piece 482 rotates with the central tube 48, the part of the arched piece 482 in contact with the inner wall of the annular groove 481 can slide on the inner wall of the annular groove 481, thereby causing the arched piece 482 to undergo elastic deformation, thereby improving the separation efficiency of the sphere 12 and the arched piece 482.

[0061] On the other hand, by setting a vertical plate 483 inside the annular groove 481, and setting an arc-shaped elastic piece 13 at one end of the side hole 11 located inside the sleeve 1, and the arc-shaped elastic piece 13 located at the end of the arched piece 482 away from the vertical plate 483; based on the above, when the arched piece 482 rotates with the central tube 48, the ball 12 will disengage from the arched piece 482. Subsequently, the central tube 48 rotates, causing the vertical plate 483 to push the ball 12. The vertical plate 483 pushes the ball 12 to the position of the arc-shaped elastic piece. During the process, the ball 12 squeezes the arc-shaped elastic piece, causing the ball 12 to pass over the arc-shaped elastic piece, and then the arc-shaped elastic piece returns to its original position. The arc-shaped elastic piece blocks the ball 12, thereby preventing the ball 12 from moving back to the area of ​​the side hole 11 during the use of the sleeve 1, thus avoiding the problem of affecting the ventilation performance of the side hole 11.

[0062] Furthermore, in the initial state, the end of the arched piece 482 away from the inner wall of the annular groove 481 is recessed, and the ball 12 is located in the recess of the arched piece 482. When the sleeve 1 is not in use, during the transportation of the sleeve 1, the ball 12 is located in the recess of the arched piece 482, thereby preventing the ball 12 from separating from the arched piece 482 during transportation and movement, and preventing the ball 12 from detaching from the side hole 11.

[0063] The foregoing has shown and described the basic principles, main features, and advantages of the present invention. Those skilled in the art should understand that the present invention is not limited to the above embodiments. The embodiments and descriptions in the specification are merely illustrative of the principles of the invention. Various changes and modifications can be made to the invention without departing from its spirit and scope, and all such changes and modifications fall within the scope of the present invention as claimed. The scope of protection of the present invention is defined by the appended claims and their equivalents.

Claims

1. A disposable, leak-proof rigid bronchoscope; the bronchoscope includes a cannula (1), a cylindrical tube (2), a ventilator interface (3), an operating channel (4), an inlet tube (5), and a strip-shaped observation mirror (6); a side hole (11) is provided on the outer side of the cannula (1); the cylindrical tube (2) is perpendicular to the cannula (1), and one end of the cylindrical tube (2) is a light guide interface and the other end is an anesthetic gas interface; the ventilator interface (3) is obliquely disposed on the cylindrical tube (2), and the ventilator interface (3) is connected to the cylindrical tube (2); the operating channel (4) is disposed on the cylindrical tube (2), and the operating channel (4) is connected to the cylindrical tube (2), and the interior of the operating channel (4) corresponds to the interior of the cannula (1) through the cylindrical tube (2); the inlet tube (5) is movably installed on the operating channel (4); the strip-shaped observation mirror (6) is movably installed in the inlet tube (5); characterized in that, Bronchoscopes also include: Connector 1 (41) is located at the end of the operating channel (4) away from the cylindrical tube (2), and a rubber sealing ring (42) is provided on the outside of connector 1 (41). The inside of the rubber sealing ring (42) is hollow. An L-shaped groove 1 (43) is provided on connector 1 (41). The extended connecting tube (51) is located at one end of the inlet tube (5) near the cylindrical tube (2), and the inner diameter of the extended connecting tube (51) is the same as the outer diameter of the connecting tube (41). The extended connecting tube (51) is equipped with a locking block (52) inside. When the inlet tube (5) is installed on the connecting tube (41), the locking block (52) enters the L-shaped groove (43). A short-connecting tube (53) is rotatably connected to the end of the inlet tube (5) away from the long-connecting tube (51). A second locking block (54) is provided inside the short-connecting tube (53). A folding airbag (55) is provided on the inner wall of the short-connecting tube (53). The folding airbag (55) is annular. An annular plate (56) is provided at the upper end of the folding airbag (55). The folding airbag (55) is located below the second locking block (54). An annular groove (57) is opened on the inner wall of the short-connecting tube (53). The annular groove (57) is located above the second locking block (54). An annular sealing ring (58) with an internal hollow structure is provided inside the annular groove (57). The interior of the annular sealing ring (58) is connected to the interior of the folding airbag (55). The mounting tube (61) is positioned above the strip-shaped observation lens (6). The outer ring of the mounting tube (61) has an L-shaped groove (62). When the strip-shaped observation lens (6) is inserted into the sleeve (1), the mounting tube (61) enters the inside of the short-connection tube (53), and at the same time, the locking block (54) enters the L-shaped groove (62).

2. A disposable, leak-proof rigid bronchoscope as claimed in claim 1, characterized in that: The upper end of the annular plate (56) is uniformly provided with arc-shaped grooves (59), and the two sides of the arc-shaped grooves (59) are chamfered. The lower end of the mounting tube (61) is uniformly provided with arc-shaped blocks (63), and the two sides of the arc-shaped blocks (63) are chamfered. When the mounting tube (61) enters the interior of the short-connecting tube (53), the arc-shaped blocks (63) are embedded in the arc-shaped grooves (59).

3. A disposable, leak-proof rigid bronchoscope as claimed in claim 1, characterized in that: The inside of the first connector (41) is provided with a sliding groove (44), which is annular and connected to the middle of the first L-shaped groove (43). An annular sealing block (45) is slidably connected inside the sliding groove (44). A spring is provided between the annular sealing block (45) and the lower end of the sliding groove (44). A rectangular notch (46) is provided at the upper end of the annular sealing block (45), which is the same size as the opening at the upper end of the first L-shaped groove (43). A through groove (47) is provided at the lower end of the sliding groove (44), which is connected to the inside of the rubber sealing ring (42).

4. A disposable, leak-proof rigid bronchoscope as claimed in claim 3, characterized in that: The inner wall of the connecting pipe (41) is slidably connected to a central tube (48). The lower end of the central tube (48) passes through the cylindrical tube (2) and is slidably connected to the inner wall of the sleeve (1). The upper end of the central tube (48) is provided with a slot (49). The size of the slot (49) is the same as the size of the rectangular notch (46). When the locking block (52) moves downward, the locking block (52) is embedded in the slot (49). The outer wall of the central tube (48) is provided with an annular groove. (481) The inner wall of the annular groove (481) penetrates the central hole, and the part of the annular inner wall that does not penetrate the central hole is provided with an arched piece (482); a ball (12) is provided in the side hole (11) on the outside of the sleeve (1), the ball (12) blocks the side hole (11), and in the initial state, the ball (12) is in contact with the arched piece (482). When the central tube (48) rotates, the ball (12) falls into the annular groove (481).

5. A disposable, leak-proof rigid bronchoscope as claimed in claim 2, characterized in that: The inner diameter of the side hole (11) is bent towards the inside of the sleeve (1), so that the side hole (11) and the inside of the sleeve (1) are arc-shaped transitions.

6. A disposable, leak-proof rigid bronchoscope as claimed in claim 5, characterized in that: One end of the arched piece (482) is fixedly connected to the inner wall of the annular groove (481), and the other end of the arched piece (482) is in contact with the inner wall of the annular groove (481).

7. A disposable, leak-proof rigid bronchoscope as claimed in claim 4, characterized in that: The annular groove (481) is provided with a vertical plate (483). When the central tube (48) rotates, the ball (12) falls into the annular groove (481), and then the vertical plate (483) pushes the ball (12). The side hole (11) is provided with an arc-shaped elastic plate (13). In the initial state, the arc-shaped elastic plate (13) is located on the side of the arch plate (482) away from the vertical plate (483). When the arch plate (482) moves to the gap between the arc-shaped elastic plate (13) and the central tube (48), the end of the arc-shaped elastic plate (13) away from the inner wall of the sleeve (1) does not contact the arch plate (482).

8. A disposable, leak-proof rigid bronchoscope as claimed in claim 7, characterized in that: In the initial state, the end of the arched piece (482) away from the inner wall of the annular groove (481) is recessed, and the sphere (12) is located in the recess of the arched piece (482).

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