Sampling pollution prevention protective sleeve for fiber branch lens end

Abstract

The utility model relates to the technical field of medical assistance. A sampling pollution prevention protective sleeve for a bronchofiberscope head end comprises a protective sleeve used for being arranged on the periphery of a bronchofiberscope in a sleeving mode, and the rear end of the protective sleeve is connected with a fixing application. The sheath is provided with a main channel and an auxiliary channel which are arranged side by side. The cross-sectional area of the main channel is larger than that of the auxiliary channel. The main channel is a bronchofiberscope channel used for penetrating through a bronchofiberscope, the rear end of the bronchofiberscope channel is open, and a transparent end cover capable of being opened under stress is installed at the front end of the bronchofiberscope channel. The auxiliary channel is used for being switched to serve as at least one functional channel of the oxygen introducing channel, the drainage channel and the liquid flushing channel, and the rear end of the auxiliary channel is connected with an auxiliary extending connector extending out of the sheath. A channel opening facing the transparent end cover is formed in the front end of the auxiliary channel. Through the transparent end cover which can be opened under stress, the head end of the bronchofiberscope is protected from being influenced by the upper respiratory tract while the entering observation of the bronchofiberscope is not influenced, and the influence of colonized bacteria in a nasal cavity or an oral cavity is avoided.

Description

Technical Field

[0001] The utility model relates to the technical field of medical assistance, in particular to a protective cover for a fiberoptic bronchoscope. Background Art

[0002] There is no protective structure at the tip of a traditional fiberoptic bronchoscope.

[0003] During bronchoscopy, the patient needs to pass through the human airway (including the nasal cavity and oral cavity). Since the nasal cavity and oral cavity are inherently a contaminated environment, especially when there is a lot of secretion or the patient has colonized bacteria, the front end of the bronchoscopy will be contaminated with nasal and oral microorganisms, which will seriously affect the sampling results of the lower respiratory tract samples obtained by the bronchoscopy. For positive bacteria or fungi in the sampling results obtained when the tip of the bronchoscopy does not have a protective structure, it cannot be completely confirmed that the microorganisms come from the lower respiratory tract, because it is possible that the tip of the bronchoscopy is contaminated by upper respiratory tract colonized bacteria when the bronchoscopy passes through the human airway. Utility Model Content

[0004] In view of the problems existing in the prior art, the utility model provides a sampling contamination prevention protective cover for the end of a fiber support lens, which solves at least one of the above-mentioned technical problems.

[0005] The technical solution of the utility model is: a protective cover for preventing sampling pollution at the end of a fiberoptic bronchoscope, comprising a cover for being arranged on the periphery of a fiberoptic bronchoscope, characterized in that the rear end of the cover is connected with a fixed patch with the axial direction of the cover as the front-back direction;

[0006] The sheath is provided with a main channel and a secondary channel arranged side by side; the cross-sectional area of ​​the main channel is larger than the cross-sectional area of ​​the secondary channel;

[0007] The main channel is a bronchoscope channel for passing a bronchoscope, the rear end of the bronchoscope channel is open, and the front end of the bronchoscope channel is equipped with a transparent end cover that can be opened by force;

[0008] The secondary channel is used to switch to be at least one functional channel among an oxygen passage channel, a drainage channel and a flushing channel, and the rear end of the secondary channel is connected to a secondary extension interface extending out of the sheath;

[0009] The front end of the secondary channel is provided with a channel opening facing the transparent end cover.

[0010] The utility model is provided with a transparent end cap that can be opened by force at the front end of the fiberoptic bronchoscope channel, which ensures that the fiberoptic bronchoscope is not affected when entering the bronchoscope for observation, and protects the head end of the fiberoptic bronchoscope from being affected by the upper respiratory tract, thus avoiding the influence of nasal or oral colonization bacteria. The fiberoptic bronchoscope is completely sterile (not affected by the nasal and oral environments) and enters the lower airway, ensuring the accuracy of the later fiberoptic bronchoscope sampling results. After the fiberoptic bronchoscope enters the lower respiratory tract as a whole, the transparent end cap can be pushed open to suction sputum to obtain samples, or to perform lavage inspections, etc.

[0011] Through the setting of the auxiliary channel, it can be switched to be used as an oxygen passage to introduce oxygen and improve the tolerance of bronchoscopy in patients with hypoxemia; it can be switched to be used as a flushing channel to flush the front end of the transparent end cap, and it can be switched to be used as a drainage channel to attract the flushing fluid.

[0012] Further preferably, an arc-shaped transition portion exists between the front end surface of the sleeve in the axial direction and the side wall of the sleeve.

[0013] The front end of a conventional fiberoptic bronchoscope is at a right angle, which may cause damage to the nasal cavity or oral cavity, or even the glottic airway; the utility model can protect the airway through the design of the arc-shaped transition part.

[0014] Further preferably, the front end of the secondary channel is provided with an extension portion extending from the front end of the main channel, and the extension portion is provided with the channel opening;

[0015] The angle between the opening direction of the channel opening and the axial direction of the sheath is 80°-110°.

[0016] Further preferably, the cross-section of the secondary channel is crescent-shaped or circular.

[0017] Further preferably, the cross-section of the outer contour of the sheath is teardrop-shaped, elliptical or oval-shaped.

[0018] Further preferably, the secondary channel is a drainage channel or a flushing channel;

[0019] The sheath is also provided with an auxiliary channel for passing oxygen, and the rear end of the auxiliary channel is connected to an extension interface extending out of the sheath;

[0020] A vent is provided on the side wall of the auxiliary channel;

[0021] The auxiliary channel and the secondary channel are located on opposite sides of the main channel;

[0022] The rear end of the auxiliary channel is connected to an auxiliary extension interface extending out of the sheath.

[0023] It is convenient to work synchronously or alternately through the sub-channel and the auxiliary channel.

[0024] Further preferably, the cross-sections of the secondary channel and the auxiliary channel are both crescent-shaped or arc-shaped;

[0025] The cross section of the outer contour of the sheath is oval or oval.

[0026] Alternatively, the cross-sections of the secondary channel and the auxiliary channel are circular, and the cross-section of the main channel is circular;

[0027] The inner diameter of the cross section of the main channel is larger than the inner diameter of the cross section of the secondary channel, and larger than the inner diameter of the cross section of the auxiliary channel;

[0028] The outer contour of the sheath is an ellipse or a rounded rhombus.

[0029] Further preferably, the transparent end cover is a flip cover, and the flip cover is connected to the front end of the sheath via a flexible connecting belt.

[0030] It is convenient to push the fiberoptic bronchoscope relative to the sheath, and then push the transparent end cover out.

[0031] Alternatively, the transparent end cap is a transparent silicone valve, and a cross-shaped slit is provided on the transparent silicone valve.

[0032] It is convenient to push the fiberoptic bronchoscope relative to the sheath and push the head end of the fiberoptic bronchoscope out from the cross-shaped slit.

[0033] Beneficial effect: The utility model is provided with a transparent end cover which can be opened by force at the front end of the fiberoptic bronchoscope channel, so as to ensure that the fiberoptic bronchoscope is not affected for observation through the bronchoscope, and protect the head end of the fiberoptic bronchoscope from the influence of the upper respiratory tract, thus avoiding the influence of nasal or oral colonization bacteria. BRIEF DESCRIPTION OF THE DRAWINGS

[0034] Figure 1 It is a cross-sectional view of a specific embodiment 1 of the utility model;

[0035] Figure 2 This is a structural schematic diagram of a specific embodiment 1 of the utility model;

[0036] Figure 3 It is a cross-sectional view of the sheath of the specific embodiment 1 of the utility model;

[0037] Figure 4 It is another cross-sectional view of the sheath of the specific embodiment 1 of the utility model;

[0038] Figure 5 It is a cross-sectional view of specific embodiment 2 of the utility model;

[0039] Figure 6 This is a structural schematic diagram of a specific embodiment 2 of the utility model;

[0040] Figure 7 It is a cross-sectional view of the sheath of the specific embodiment 2 of the utility model;

[0041] Figure 8 It is another cross-sectional view of the sheath of specific embodiment 2 of the utility model;

[0042] Fig. 9 It is another cross-sectional view of the sheath of specific embodiment 2 of the utility model;

[0043] Fig.10 It is a cross-sectional view of specific embodiment 5 of the utility model.

[0044] In the figure, 1 is a sheath, 2 is a fixed dressing, 3 is a transparent end cap, 4 is a transparent silicone valve, 11 is a main channel, 12 is a secondary channel, 13 is an auxiliary channel, 121 is a channel opening, and 131 is a vent. DETAILED DESCRIPTION

[0045] See also Figures 1 to 4 , Specific embodiment 1, a protective cover for preventing sampling contamination at the end of a bronchoscope lens, comprising a cover 1 for being mounted on the periphery of a bronchoscope, with the axial direction of the cover 1 being the front-to-back direction, and a fixed patch 2 being connected to the rear end of the cover 1; a main channel 11 and a secondary channel 12 arranged side by side are provided on the cover 1; the cross-sectional area of ​​the main channel 11 is larger than the cross-sectional area of ​​the secondary channel 12. The main channel 11 is a bronchoscope channel for passing through a bronchoscope, the rear end of the bronchoscope channel is open, and a transparent end cover 3 that can be opened by force is installed at the front end of the bronchoscope channel; the secondary channel 12 is used to switch as at least one functional channel among an oxygen passage channel, a drainage channel, and a flushing channel, and the rear end of the secondary channel 12 is connected to a secondary extension interface extending out of the cover 1; the front end of the secondary channel 12 is provided with a channel opening 121 facing the transparent end cover 3. The utility model is provided with a transparent end cap 3 that can be opened by force at the front end of the bronchoscope channel, which ensures that the bronchoscope is not affected when entering the bronchoscope for observation, and protects the head end of the bronchoscope from the influence of the upper respiratory tract, thus avoiding the influence of nasal or oral colonization bacteria. The bronchoscope is completely sterile (not affected by the nasal and oral environments) and enters the lower airway, ensuring the accuracy of the later bronchoscope sampling results. After the bronchoscope enters the lower respiratory tract as a whole, the transparent end cap 3 can be pushed open to suction sputum to take samples, or to perform lavage examinations, etc. Through the setting of the auxiliary channel 13, it is switched as an oxygen passage to introduce oxygen, thereby improving the tolerance of bronchoscope examinations in patients with hypoxemia; it is switched as a flushing channel to flush the front end of the transparent end cap 3, and it is switched as a drainage channel to attract the flushing liquid.

[0046] The flushing channel is used to deliver flushing fluid or anesthetic agents, etc.

[0047] The secondary extension interface can be detachably connected to a liquid delivery channel for delivering liquid, an oxygen delivery channel for delivering oxygen, or a negative pressure drainage channel for negative pressure drainage.

[0048] The axial length of sheath 1 is 20-25cm. Since the average distance between the human nostril and the glottis is 19cm, the protective sheath 1 is greater than 20cm, which can ensure that the bronchoscope passes through the glottis and then enters the lower respiratory tract through the protective sheath 1. The thickness of sheath 1 is 0.1-3mm. It does not increase the difficulty of the bronchoscope entering the glottis by increasing the outer diameter of the bronchoscope too much. The material of sheath 1 is a material with elasticity and can be bent. It does not affect the bronchoscope's changing direction operation. Sheath 1 can be a silicone sheath 1.

[0049] There is an arc-shaped transition portion between the axial front end surface of the sheath 1 and the side wall of the sheath 1. The front end of a conventional fiberoptic bronchoscope is at a right angle, which may damage the nasal cavity or oral cavity, or even the glottic airway; the utility model can protect the airway through the design of the arc-shaped transition portion.

[0050] The fixed patch includes a release paper layer, an adhesive portion, and a covering portion arranged in sequence from front to back along the thickness direction. It is convenient to tear off the release paper layer for adhesive fixation. An opening for passing the sheath can be opened in the center of the fixed patch. The opening is fixedly connected to the outer wall of the sheath. After the bronchoscope crosses the glottis and enters the trachea, the fixed patch can be adhered to the nose wing to play a fixing role;

[0051] The front end of the secondary channel 12 is provided with an extension portion extending from the front end of the main channel 11, and the extension portion is provided with a channel opening 121; the opening direction of the channel opening 121 and the axial angle of the sheath 1 are 80°-110°. The opening direction of the channel opening can be radially inward. That is, the opening direction of the channel opening 121 and the axial angle of the sheath 1 are 90°. At least three channel openings can be provided, and at least three channel openings are arranged around the periphery of the transparent end cap. Alternatively, the channel opening is an arc-shaped strip structure. The channel opening is partially arranged around the periphery of the transparent end cap.

[0052] The cross section of the secondary channel 12 is crescent-shaped or circular. The cross section of the outer contour of the sheath 1 is teardrop-shaped, elliptical or oval-shaped. Figure 3 The cross section of the secondary channel 12 is crescent-shaped. The cross section of the outer contour of the sheath 1 is elliptical or oval. Figure 4 The cross section of the secondary channel 12 is circular. The cross section of the outer contour of the sheath 1 is teardrop-shaped. The teardrop-shaped structure refers to a cam-shaped structure.

[0053] The inner diameter of the main channel is larger than the outer diameter of the bronchoscope.

[0054] When using, first select the appropriate protective cover model according to the model of the fiberoptic bronchoscope (the inner diameter of the main channel is larger than the outer diameter of the fiberoptic bronchoscope), then put the protective cover on the front end of the fiberoptic bronchoscope and fit it tightly;

[0055] The front end of the bronchoscope enters the nasal cavity (or oral cavity), and then enters the glottis through the nasal cavity or oral cavity. From the transparent front cover of the front end of the sheath, you can see that the bronchoscope has entered the trachea, and the tracheal structure is clear.

[0056] Then continue to insert the fiberoptic bronchoscope, and when the fixed dressing reaches the nostril, fix the fixed dressing;

[0057] Push the fiberoptic bronchoscope, open the transparent front cover, and let the front end of the fiberoptic bronchoscope enter the lower respiratory tract;

[0058] During routine examinations, lower respiratory tract samples are taken. The respiratory tract samples taken at this time are not affected by the upper respiratory tract and avoid the influence of nasal and oral colonization bacteria, which is of great significance in guiding clinical diagnosis and treatment.

[0059] During the examination, the fiberoptic bronchoscope can be withdrawn at any time, while the sheath remains in its original position. Re-examination can be performed through this channel to reduce secondary damage.

[0060] See also Figures 5 to 9 Specific embodiment 2, based on specific embodiment 1, the auxiliary channel 12 is a drainage channel or a flushing channel; the sheath 1 is also provided with an auxiliary channel 13 for passing oxygen, the rear end of the auxiliary channel 13 is connected to an extension interface extending out of the sheath 1; a vent 131 is provided on the side wall of the auxiliary channel 13; the auxiliary channel 13 and the auxiliary channel 12 are located on opposite sides of the main channel 11; the rear end of the auxiliary channel 13 is connected to an auxiliary extension interface extending out of the sheath 1. It is convenient to work synchronously or alternately through the auxiliary channel 12 and the auxiliary channel 13.

[0061] The cross-sections of the secondary channel 12 and the auxiliary channel 13 are both crescent-shaped; the cross-section of the outer contour of the sheath 1 is elliptical or oval. Figure 8 The cross-sections of the secondary channel 12 and the auxiliary channel 13 are both crescent-shaped; the cross-section of the outer contour of the sheath 1 is oval. Fig. 9 The cross-sections of the secondary channel 12 and the auxiliary channel 13 are both crescent-shaped; the cross-section of the outer contour of the sheath 1 is elliptical.

[0062] The cross-sections of the secondary channel 12 and the auxiliary channel 13 are circular, and the cross-section of the main channel 11 is circular; the inner diameter of the cross-section of the main channel 11 is larger than the inner diameter of the cross-section of the secondary channel 12, and larger than the inner diameter of the cross-section of the auxiliary channel 13; the outer contour of the sheath 1 is an ellipse or a rounded diamond. Figure 7 The cross-sections of the secondary channel 12 and the auxiliary channel 13 are circular, and the outer contour of the sheath 1 is a rounded diamond.

[0063] See also Figure 3 as well as Figure 4, Specific embodiment 3, based on specific embodiment 1, the transparent end cover 3 is a flip cover, and the flip cover is connected to the front end of the sheath through a flexible connecting belt 4. It is convenient to push the bronchoscope relative to the sheath, and then push the transparent end cover out. The flip cover is a flip cover made of a transparent hard material. The flip cover can be a plastic flip cover. The flip cover can be disc-shaped. Alternatively, the outer diameter of the flip cover can decrease from the outside to the inside along the axial direction. The front end of the main channel is provided with a mounting port that matches the outer contour of the flip cover. The flip cover and the sheath can be clamped by mutually matching protrusions and grooves.

[0064] See also Fig.10 Specific embodiment 4, based on specific embodiment 1, the transparent end cap is a transparent silicone valve 4, and a cross-shaped slit is provided on the transparent silicone valve 4. It is convenient to push the fiberoptic bronchoscope relative to the sheath and push the head end of the fiberoptic bronchoscope out from the cross-shaped slit.

[0065] The above are only preferred implementations of the present invention. It should be pointed out that ordinary technicians in this technical field can make several improvements and modifications without departing from the principles of the present invention. These improvements and modifications should also be regarded as the protection scope of the present invention.

Claims

1. A protective cover for preventing sampling contamination at the end of a fiber bronchoscope lens, comprising a protective cover for being arranged on the periphery of a fiber bronchoscope, characterized in that: Taking the axial direction of the sheath as the front-to-back direction, the rear end of the sheath is connected with a fixed patch; The sheath is provided with a main channel and a secondary channel arranged side by side, and the cross-sectional area of ​​the main channel is larger than the cross-sectional area of ​​the secondary channel; The main channel is a bronchoscope channel for passing a bronchoscope, the rear end of the bronchoscope channel is open, and the front end of the bronchoscope channel is equipped with a transparent end cover that can be opened by force; The secondary channel is used to switch to be at least one functional channel among an oxygen passage channel, a drainage channel and a flushing channel, and the rear end of the secondary channel is connected to a secondary extension interface extending out of the sheath; The front end of the secondary channel is provided with a channel opening facing the transparent end cover.

2. The anti-sampling contamination protective cover for the end of a fiber support lens according to claim 1, characterized in that: An arc-shaped transition portion exists between the front end surface of the sleeve in the axial direction and the side wall of the sleeve.

3. The anti-sampling contamination protective cover for the end of a fiber support lens according to claim 1, characterized in that: The front end of the secondary channel is provided with an extension portion extending from the front end of the main channel, and the extension portion is provided with the channel opening; The angle between the opening direction of the channel opening and the axial direction of the sheath is 80°-110°.

4. The anti-sampling contamination protective cover for the end of a fiber support lens according to claim 1, characterized in that: The cross section of the secondary channel is crescent-shaped or circular.

5. The anti-sampling contamination protective cover for the end of a fiber support lens according to claim 1, characterized in that: The cross section of the outer contour of the sheath is teardrop-shaped, elliptical or oval-shaped.

6. The anti-sampling contamination protective cover for the end of a fiber support lens according to claim 1, characterized in that: The secondary channel is a drainage channel or a flushing channel; The sheath is also provided with an auxiliary channel for passing oxygen, and the rear end of the auxiliary channel is connected to an extension interface extending out of the sheath; A vent is provided on the side wall of the auxiliary channel; The auxiliary channel and the secondary channel are located on opposite sides of the main channel; The rear end of the auxiliary channel is connected to an auxiliary extension interface extending out of the sheath.

7. The anti-sampling contamination protective cover for the end of a fiber support lens according to claim 6, characterized in that: The cross-sections of the secondary channel and the auxiliary channel are both crescent-shaped; The cross section of the outer contour of the sheath is oval or oval.

8. The anti-sampling contamination protective cover for the end of a fiber support lens according to claim 6, characterized in that: The cross-sections of the secondary channel and the auxiliary channel are circular, and the cross-section of the main channel is circular; The inner diameter of the cross section of the main channel is larger than the inner diameter of the cross section of the secondary channel, and larger than the inner diameter of the cross section of the auxiliary channel; The outer contour of the sheath is an ellipse or a rounded rhombus.

9. A protective cover for preventing sampling contamination at the end of a fiber support lens according to any one of claims 1 to 8, characterized in that: The transparent end cover is a flip cover, and the flip cover is connected to the front end of the sheath through a flexible connecting belt.

10. A protective cover for preventing sampling contamination at the end of a fiber support lens according to any one of claims 1 to 8, characterized in that: The transparent end cover is a transparent silicone valve, and a cross-shaped slit is provided on the transparent silicone valve.

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