One-way valve for painless bronchofiberscope examination

Abstract

The utility model relates to the technical field of medical instruments, and discloses a one-way valve for painless bronchofiberscope examination, which comprises a laryngeal mask and a connecting tube communicated with a ventilation catheter of the laryngeal mask, the side wall of the connecting tube is communicated with a breathing loop, and the front end of a bronchofiberscope body penetrates through the connecting tube and the laryngeal mask and extends into a human body. A valve sealing assembly is arranged at the air inlet end of the side, away from the laryngeal mask, of the connecting pipe and used for achieving sealing between the front end of the bronchofiberscope body and the connecting pipe, the valve sealing assembly comprises a valve connecting ring, and an outer-layer valve and an inner-layer valve which are tightly attached to each other are arranged in the valve connecting ring in the air inlet direction; according to the bronchofiberscope, the valve sealing assembly is arranged to replace a sealing cover in the prior art, the same valve sealing assembly can be matched with the front ends of bronchofiberscope bodies of various sizes, the use cost is reduced, meanwhile, the installation efficiency of the bronchofiberscope is improved, and the bronchofiberscope can rapidly enter a diagnosis state.

Description

Technical Field

[0001] This utility model belongs to the field of medical device technology, specifically relating to a one-way valve for painless fiberoptic bronchoscopy. Background Technology

[0002] With the development of comfortable medical care, fiberoptic bronchoscopes are widely used in painless examinations and treatments. A fiberoptic bronchoscope (full name: fiberoptic bronchoscope) is a beam guide composed of tens of thousands of very thin fibers drawn from highly transparent glass or acrylic resin. Its lumen is very small, flexible and bendable, with strong light guiding ability, high brightness, and clear field of vision. It can be easily inserted into the trachea through the mouth or nose and all the way to the opening of each bronchial segment.

[0003] In use, the tip of the bronchoscope is typically inserted through the connecting tube and laryngeal mask airway into the body. The outlet end of the connecting tube is sealed to the laryngeal mask airway, and a breathing circuit for ventilation is connected to the side wall of the connecting tube. However, in actual diagnostic procedures, due to the different diameters of the tip of different bronchoscope models, an effective seal cannot be achieved between the tip of the bronchoscope and the connecting tube. Current technology often uses a sealing cap at the opening end of the connecting tube, with a sealing hole for the bronchoscope tip to pass through, thus achieving a seal between the bronchoscope and the connecting tube. This not only requires creating a matching sealing hole for the different outer diameters of the bronchoscope tip, but also necessitates frequent installation and removal of the sealing cap during bronchoscope placement and removal, making the operation of the entire diagnostic equipment more cumbersome, resulting in longer examination times, and increasing the probability of hypoxemia and the risk of carbon dioxide retention. Summary of the Invention

[0004] In view of this, the purpose of this utility model is to provide a one-way valve for painless fiberoptic bronchoscopy, so as to solve the technical problem of the cumbersome installation process of fiberoptic bronchoscopy in the prior art.

[0005] To achieve the above objectives, this utility model provides the following technical solution:

[0006] A one-way valve for painless fiberoptic bronchoscopy includes a laryngeal mask and a connecting tube connected to the ventilation tube of the laryngeal mask. A breathing circuit is connected to the side wall of the connecting tube. The front end of the fiberoptic bronchoscope passes through the connecting tube and the laryngeal mask and penetrates into the human body. The air inlet end of the connecting tube away from the laryngeal mask is provided with a valve sealing assembly to achieve a seal between the front end of the fiberoptic bronchoscope and the connecting tube. The valve sealing assembly includes a valve connecting ring. An outer valve and an inner valve are arranged close to each other along the air inlet direction inside the valve connecting ring.

[0007] Furthermore, the outer valve includes a circular first valve piece disposed inside the valve connecting ring. The thickness of the first valve piece is less than the thickness of the valve connecting ring, and the diameter of the first valve piece is 17 mm.

[0008] Furthermore, two intersecting and perpendicular outer straight slits are provided at the center of the first valve piece. The intersection of the two outer straight slits coincides with the center of the first valve piece, thus forming a cross-shaped first forming gap. The central area of ​​the first valve piece is divided into four identical deformation units through the first forming gap. The front end of the bronchoscope passes through the intersection of the two outer straight slits.

[0009] Furthermore, the two outer straight seams are of the same length and are both 10mm.

[0010] Furthermore, the two outer straight seams form four mutually perpendicular single-sided straight seams centered on the intersection point. Each single-sided straight seam has three outer arc-shaped seams that are spaced apart along the radial direction and concentric with the first valve piece. The four outer arc-shaped seams with the same outer diameter are evenly distributed along the circumference and correspond one-to-one with the four single-sided straight seams. The outer arc-shaped seams include a first outer arc-shaped seam, a second outer arc-shaped seam, and a third outer arc-shaped seam, all with gradually increasing outer diameters.

[0011] Furthermore, the inner valve includes a circular second valve piece disposed inside the valve connecting ring. The shape, size, material, and positional and connection relationships of the second valve piece with the valve connecting ring are the same as those of the first valve piece. The second valve piece has two inner straight seams and three inner arc-shaped seams of different sizes. The size and structure of the inner straight seams and the outer straight seams, as well as the size and distribution of the inner arc-shaped seams and the outer arc-shaped seams, are the same. The two inner straight seams form four equal second deformation units in the central area of ​​the second valve piece. The inner straight seams and the inner arc-shaped seams intersect with the outer straight seams and the inner arc-shaped seams, respectively.

[0012] Furthermore, a circular through hole is opened at the center of the second valve plate. The radius of the circular through hole is smaller than the inner diameter of the innermost inner arc-shaped slit. A sealing block of the same size is provided in the through hole, and the sealing block is fixedly connected to any second deformation unit.

[0013] Furthermore, the inner valve is composed of four independent valve blocks that overlap counterclockwise. The independent valve blocks include a plate-shaped right-angled fan-shaped main block and a right-angled fan-shaped overlapping block that presents a certain curvature. One right-angled surface of the overlapping block is in complete contact with one right-angled surface of the main block, and the other right-angled surface of the overlapping block is flush with the other right-angled surface of the main block.

[0014] Furthermore, the valve connecting ring has external threads on its side wall and internal threads on the inner wall of the air inlet end of the connecting pipe, thus achieving a threaded connection between the valve connecting ring and the connecting pipe. The outer end face of the valve connecting ring has friction protrusions, which facilitates applying force to the valve connecting ring during rotational installation.

[0015] The beneficial effects of this utility model are as follows:

[0016] Compared with existing technologies, by setting a valve sealing component to replace the sealing cap in existing technologies, the same valve sealing component can be adapted to the front end of various sizes of fiberoptic bronchoscopes, reducing the cost of use while improving the installation efficiency of fiberoptic bronchoscopes, enabling them to quickly enter the diagnostic state, reducing the overall diagnostic time, and to a certain extent reducing the probability of hypoxemia and the risk of carbon dioxide retention. Attached Figure Description

[0017] To make the objectives, technical solutions, and beneficial effects of this utility model clearer, the following drawings are provided for illustration:

[0018] Figure 1 This is a schematic diagram of the installation position of the one-way valve used for painless fiberoptic bronchoscopy in Embodiment 1 of this utility model.

[0019] Figure 2 This is a schematic diagram of the valve sealing assembly in Embodiment 1 of this utility model;

[0020] Figure 3 for Figure 2 Enlarged view at point A1;

[0021] Figure 4 This is a schematic diagram of the inner valve in Embodiment 1 of this utility model;

[0022] Figure 5 This is a front view of the valve sealing assembly in Embodiment 1 of this utility model;

[0023] Figure 6 This is a schematic diagram of the inner valve in Embodiment 2 of this utility model;

[0024] Figure 7 This is a schematic diagram of the independent lobe block in Embodiment 2 of this utility model.

[0025] The following labels are shown in the attached diagram:

[0026] 1. Front end of the bronchoscope body; 2. Laryngeal mask; 3. Connecting tube; 4. Breathing circuit; 5. Valve sealing assembly; 5. Outer valve; 51. First valve piece; 511. Outer straight slit; 512. Outer arc slit; 513. First outer arc slit; 5131. Second outer arc slit; 5132. Third outer arc slit; 5133. Inner valve; 52. Second valve piece; 521. Inner straight slit; 522. Inner arc slit; 523. Sealing block; 524. Independent valve block; 525. Main body block; 5251. Overlapping block; 5252. Valve connecting ring; 53. Friction protrusion; 531. Detailed Implementation

[0027] Example 1, specifically as follows Figures 1-5 As shown.

[0028] A one-way valve for painless fiberoptic bronchoscopy includes a laryngeal mask 2 and a connecting tube 3 connected to the ventilation tube of the laryngeal mask 2. A breathing circuit 4 is connected to the side wall of the connecting tube 3. The front end 1 of the fiberoptic bronchoscope passes through the connecting tube 3 and the laryngeal mask 2 and penetrates into the human body. The air inlet end of the connecting tube 3 away from the laryngeal mask 2 is provided with a valve sealing assembly 5 to achieve a seal between the front end 1 of the fiberoptic bronchoscope and the connecting tube 3. The valve sealing assembly 5 includes a valve connecting ring 53. An outer valve 51 and an inner valve 52 are arranged close to each other along the air inlet direction inside the valve connecting ring 53.

[0029] like Figure 2 As shown, the valve connecting ring 53 is annular in shape. The outer valve 51 includes a circular first valve piece 511 disposed inside the valve connecting ring 53. The diameter of the first valve piece 511 is the same as the inner diameter of the valve connecting ring 53, and the thickness of the first valve piece 511 is less than the thickness of the valve connecting ring 53. The outer edge of the first valve piece 511 is connected and fixed to the inner wall of the valve connecting ring 53 by adhesive bonding. The first valve piece 511 is made of medical-grade silicone, which has good deformation and resilience. In this embodiment, the diameter of the first valve piece 511 is 17mm, which can provide sufficient space for the insertion of the front end 1 of the bronchoscope with different outer diameters.

[0030] Two intersecting and perpendicular outer straight slits 512 are formed at the center of the first valve plate 511. The intersection of the two outer straight slits 512 coincides with the center of the first valve plate 511, thus forming a cross-shaped first molding gap. The front end 1 of the bronchoscope body passes through the center of the first molding gap, that is, the intersection of the two outer straight slits 512. The first molding gap divides the central area of ​​the first valve plate 511 into four identical deformation units.

[0031] It should be noted in detail that in this embodiment, the two outer straight seams 512 have the same length and are both 10mm. The length of the outer straight seam 512 is less than the diameter of the first valve piece 511. This not only ensures that the deformation unit can bend and deform to a certain extent, but also effectively prevents the sealing performance of the first valve piece 511 from being reduced due to the excessive length of the outer straight seam 512.

[0032] Two outer straight slits 512 form four mutually perpendicular single-sided straight slits centered at their intersection point. Each single-sided straight slit has three outer arc-shaped slits 513 spaced radially and concentric with the first valve piece 511. These four outer arc-shaped slits 513, with the same outer diameter, are evenly distributed circumferentially and correspond one-to-one with the four single-sided straight slits. In this embodiment, the outer arc-shaped slits 513 include a first outer arc-shaped slit 5131, a second outer arc-shaped slit 5132, and a third outer arc-shaped slit 5133, all with gradually increasing outer diameters. These three sizes of outer arc-shaped slits 513 are adapted to three commonly used types of fiberoptic bronchoscopes: the first outer arc-shaped slit 5131 has an outer diameter of 2.8 mm, the second outer arc-shaped slit 5132 has an outer diameter of 4.2 mm, and the third outer arc-shaped slit 5133 has an outer diameter of 6.0 mm.

[0033] Two outer straight seams 512 form four equally divided deformation units in the central area of ​​the first valve plate 511. When the front end 1 of the bronchoscope passes through the intersection of the outer straight seams 512, the deformation units bend and deform inward. During this process, not only does the outer surface of the deformation unit fit tightly against the outer wall of the front end 1 of the bronchoscope, but the gap between adjacent deformation units is also sealed due to compression deformation, thereby ensuring the sealing between the deformation unit and the front end 1 of the bronchoscope. In addition, by setting outer arc seams 513 of various sizes to adapt to the front end 1 of the bronchoscope with different diameters, the deformation units are more likely to bend, improving the fit between the outer surface of the deformation unit and the front end 1 of the bronchoscope, thereby enhancing the sealing.

[0034] The inner valve 52 also includes a circular second valve piece 521 disposed inside the valve connecting ring 53. The shape, size, material, positional relationship and connection relationship of the second valve piece 521 with the valve connecting ring 53 are the same as those of the first valve piece 511, so they will not be described in detail. Similarly, the second valve piece 521 has two inner straight seams 522 and three inner arc-shaped seams 523 of different sizes. In this embodiment, the inner straight seams 522 and the outer straight seams 512 have the same size and structure, and the inner arc-shaped seams 523 and the outer arc-shaped seams 513 have the same size and distribution. The two inner straight seams 522 form four equal-divided second deformation units in the central area of ​​the second valve piece 521. It is particularly important to note that a circular through hole is opened at the center of the second valve piece 521. The radius of the circular through hole is smaller than the inner diameter of the innermost inner arc-shaped seam 523. A sealing block 524 of the same size is provided in the through hole. The sealing block 524 is fixedly connected to any second deformation unit. The connection method can be adhesive bonding or integral molding. In this embodiment, integral molding is preferred.

[0035] Furthermore, it is worth noting that the inner straight seam 522 and the inner arc seam 523 are intersected with the outer straight seam 512 and the inner arc seam 523, respectively, thereby ensuring the sealing performance of the entire valve sealing assembly 5.

[0036] The valve connecting ring 53 has external threads on its side wall and internal threads on the inner wall of the air inlet end of the connecting pipe 3. The valve connecting ring 53 and the connecting pipe 3 are connected by threads, which facilitates the installation and replacement of the entire valve sealing assembly 5. In addition, friction protrusions 531 are welded on the outer end face of the valve connecting ring 53 to facilitate the application of force to the valve connecting ring 53 during rotation installation.

[0037] By setting a valve sealing component 5, the sealing cap in the prior art is replaced. The same valve sealing component 5 can be adapted to the front end 1 of the bronchoscope body of various sizes, which reduces the cost of use and improves the installation efficiency of the bronchoscope. It can quickly enter the diagnostic state, reduce the overall diagnostic time, and to a certain extent reduce the probability of hypoxemia and the risk of carbon dioxide retention.

[0038] Example 2, as Figures 6-7 As shown.

[0039] The difference from Embodiment 1 is that the inner valve 52 is formed by four independent valve blocks 525 overlapping counterclockwise, as shown in the example. Figure 7 As shown, the independent valve block 525 includes a plate-shaped right-angled fan-shaped main body block 5251 and a right-angled fan-shaped overlapping block 5252 with a certain curvature. One right-angled surface of the overlapping block 5252 is in complete contact with one right-angled surface of the main body block 5251, and the other right-angled surface of the overlapping block 5252 is flush with the other right-angled surface of the main body block 5251. The independent valve block 525 is also made of medical-grade silicone. The front end 1 of the bronchoscope is inserted into the center of the second valve piece 521. The overlapping independent valve blocks 525 deform and compress the front end 1 of the bronchoscope, thereby achieving a tight seal on the front end 1 of the bronchoscope.

[0040] Finally, it should be noted that the above preferred embodiments are only used to illustrate the technical solution of this utility model and are not intended to limit it. Although the utility model has been described in detail through the above preferred embodiments, those skilled in the art should understand that various changes can be made to it in form and detail without departing from the scope defined by the claims of this utility model.

Claims

1. A one-way valve for painless fiberoptic bronchoscopy, characterized in that, It includes a laryngeal mask and a connecting tube connected to the ventilation tube of the laryngeal mask. The side wall of the connecting tube is connected to a breathing circuit. The front end of the fiberoptic bronchoscope passes through the connecting tube and the laryngeal mask and penetrates into the human body. The air inlet end of the connecting tube away from the laryngeal mask is equipped with a valve sealing assembly to achieve a seal between the front end of the fiberoptic bronchoscope and the connecting tube. The valve sealing assembly includes a valve connecting ring. The valve connecting ring has an outer valve and an inner valve that are closely fitted to each other along the air inlet direction.

2. The one-way valve for painless fiberoptic bronchoscopy according to claim 1, characterized in that, The outer valve includes a circular first valve piece disposed inside the valve connecting ring. The thickness of the first valve piece is less than the thickness of the valve connecting ring, and the diameter of the first valve piece is 17 mm.

3. The one-way valve for painless fiberoptic bronchoscopy according to claim 2, characterized in that, Two intersecting and perpendicular outer straight slits are provided at the center of the first valve. The intersection of the two outer straight slits coincides with the center of the first valve, thus forming a cross-shaped first forming gap. The central area of ​​the first valve is divided into four identical deformation units through the first forming gap. The front end of the bronchoscope passes through the intersection of the two outer straight slits.

4. The one-way valve for painless fiberoptic bronchoscopy according to claim 3, characterized in that, The two outer straight seams are the same length and both are 10mm.

5. The one-way valve for painless fiberoptic bronchoscopy according to claim 4, characterized in that, Two outer straight seams form four mutually perpendicular single-sided straight seams centered on the intersection point. Each single-sided straight seam has three outer arc-shaped seams that are spaced apart along the radial direction and concentric with the first valve piece. The four outer arc-shaped seams with the same outer diameter are evenly distributed along the circumference and correspond one-to-one with the four single-sided straight seams. The outer arc-shaped seams include a first outer arc-shaped seam, a second outer arc-shaped seam, and a third outer arc-shaped seam, all with gradually increasing outer diameters.

6. The one-way valve for painless fiberoptic bronchoscopy according to claim 5, characterized in that, The inner valve includes a circular second valve piece disposed inside the valve connecting ring. The shape, size, material, and positional and connection relationship of the second valve piece with the valve connecting ring are the same as those of the first valve piece. The second valve piece has two inner straight seams and three inner arc seams of different sizes. The size and structure of the inner straight seams and the outer straight seams, as well as the size and distribution of the inner arc seams and the outer arc seams, are the same. The two inner straight seams form four equal second deformation units in the central area of ​​the second valve piece. The inner straight seams and the inner arc seams intersect with the outer straight seams and the inner arc seams, respectively.

7. The one-way valve for painless fiberoptic bronchoscopy according to claim 6, characterized in that, A circular through hole is opened at the center of the second valve plate. The radius of the circular through hole is smaller than the inner diameter of the innermost inner arc-shaped slit. A sealing block of the same size is provided in the through hole, and the sealing block is fixedly connected to any second deformation unit.

8. The one-way valve for painless fiberoptic bronchoscopy according to claim 5, characterized in that, The inner valve is composed of four independent valve blocks that overlap counterclockwise. The independent valve blocks include a plate-shaped right-angled fan-shaped main block and a right-angled fan-shaped overlapping block with a certain curvature. One right-angled surface of the overlapping block is in complete contact with one right-angled surface of the main block, and the other right-angled surface of the overlapping block is flush with the other right-angled surface of the main block.

9. The one-way valve for painless fiberoptic bronchoscopy according to claim 7 or 8, characterized in that, The valve connecting ring has external threads on its side wall and internal threads on the inner wall of the air inlet end of the connecting pipe. The valve connecting ring and the connecting pipe are connected by threads. The outer end face of the valve connecting ring has friction protrusions to facilitate the application of force to the valve connecting ring during rotation and installation.

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