Tracheal tube for bronchoscopy

Abstract

The application discloses a trachea cannula for bronchoscopy, which can solve the problem that the existing bronchoscopy cannot be fixed relative to the trachea cannula after being embedded into the trachea cannula. Specifically, the bronchoscopy is embedded into the cannula body, at this time, the second clamping block and the first clamping block jointly clamp the bronchoscopy to fix the position of the bronchoscopy under the elastic force of the first spring; then the cannula body is inserted into the trachea through the mouth of the patient, then the support plate cover is arranged on the mouth of the patient, and the cannula body is fixed to the head of the patient by using the fixing assembly; when it is necessary to adjust the position of the bronchoscopy relative to the cannula body, the second support block is driven to move away from the first support block by the driving component, so that the position of the bronchoscopy is no longer clamped and fixed, and the position of the bronchoscopy can be manually adjusted, and the operation is more convenient.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of bronchoscopy, in particular to a tracheal cannula for bronchoscopy. BACKGROUND

[0002] The bronchoscope is a tubular instrument composed of many light-guiding glass or acrylic fiber bundles, which displays the front situation of the objective lens on the display screen by reflection imaging, so as to enable medical personnel to observe the internal situation of the patient's bronchus. The tracheal cannula is used to be inserted into the patient's trachea, and then the bronchoscope is inserted into the patient's bronchus by embedding the tracheal cannula. However, the existing bronchoscope cannot be fixed relative to the tracheal cannula after embedding the tracheal cannula, which requires medical personnel to manually fix the position of the bronchoscope before observing the internal situation of the patient's bronchus, thereby increasing the operation difficulty and being inconvenient to use. SUMMARY

[0003] The main purpose of the present application is to provide a tracheal cannula for bronchoscopy, which aims to solve the problem that the existing bronchoscope cannot be fixed relative to the tracheal cannula after embedding the tracheal cannula.

[0004] To achieve the above-mentioned purpose, the technical solution provided by the present application is as follows:

[0005] A tracheal cannula for bronchoscopy, comprising a cannula body, a fixing assembly and a clamping assembly; the cannula body is used to movably pass through the bronchoscope; one end of the cannula body is provided with an oxygen supply pipe; the outer wall of the side of the cannula body close to the oxygen supply pipe is provided with a support plate; the fixing assembly is arranged on the support plate to fix the cannula body on the head of a user; the clamping assembly comprises a first clamping block, a second clamping block, a moving rod, a first annular baffle, a first spring, an annular support block and a driving component; the annular support block is sleeved on the outer wall of the cannula body, and the annular support block is located on the side of the oxygen supply pipe away from the support plate; the first clamping block is fixed inside the cannula body; the second clamping block is arranged opposite to the first clamping block; the moving rod is connected to the side of the second clamping block away from the first clamping block; the moving rod is slidably arranged in the wall of the cannula body and the annular support block; the first spring is arranged in the annular support block and connected to the moving rod to drive the second support block to move towards the first support block, thereby clamping and fixing the position of the bronchoscope; the driving component is used to drive the second support block to move away from the first support block, so as to no longer clamp and fix the position of the bronchoscope.

[0006] Preferably, the fixing assembly comprises a first elastic band and a second elastic band; the first elastic band is connected to one side of the support plate; the second elastic band is connected to the other side of the support plate; a first magic tape is arranged on the side of the first elastic band away from the support plate; a second magic tape is arranged on the side of the second elastic band away from the support plate; the first magic tape is used to be attached to the second magic tape, so that the first elastic band is connected to the second elastic band.

[0007] Preferably, a first arc-shaped groove is formed on the side of the first clamping block opposite to the second clamping block; a second arc-shaped groove is formed on the side of the second clamping block opposite to the first clamping block; a first elastic buffer layer is arranged in the first arc-shaped groove; a second elastic buffer layer is arranged in the second arc-shaped groove.

[0008] Preferably, the driving component comprises a moving rod, a first spring and a first annular baffle; the annular support block is provided with a first through hole; a first annular inner groove is formed in the middle of the first through hole; the first annular inner groove and the first through hole share a common central axis; the inner diameter of the first annular inner groove is greater than that of the first through hole; the moving rod is slidably arranged in the first through hole, and the moving rod and the first through hole share a common central axis; the first annular baffle is movably arranged in the first annular inner groove; the first spring is sleeved on the moving rod, and the first spring is arranged in the first annular inner groove; one end of the first spring is connected to the side of the first annular inner groove away from the cannula body, and the other end of the first annular inner groove is connected to the first annular baffle; the elastic force of the first spring makes the first annular baffle abut against the side of the first annular inner groove close to the cannula body.

[0009] Preferably, the central axis of the moving rod is perpendicular to the central axis of the annular support block; the driving component further comprises a sleeve ring and a connecting rope; the sleeve ring is rotatably sleeved on the annular support block; the rotation axis of the sleeve ring shares a common central axis with the annular support block; one end of the connecting rope is connected to the end of the moving rod away from the cannula body; the other end of the connecting rope is movably arranged in the first through hole and connected to the inner wall of the sleeve ring.

[0010] Preferably, a first annular groove is formed in the inner wall of the sleeve ring; a second annular groove is formed in the outer wall of the annular support block; the central axis of the first annular groove is collinear with the central axis of the second annular groove, and the central axis of the first annular groove coincides with the central axis of the annular support block; a plurality of rolling balls are rollingly arranged between the first annular groove and the second annular groove.

[0011] Preferably, the elastic force of the first spring keeps the connecting rope in a taut state, and the connecting rope is coaxial with the moving rod when the connecting rope is in the taut state.

[0012] Preferably, the clamping assembly further comprises a limiting component; the limiting component comprises a limiting rod, a second spring and a second annular baffle; the sleeve ring is provided with a second through hole penetrating through the sleeve ring; the central axis of the second through hole is perpendicular to the central axis of the sleeve ring; the limiting rod is slidably arranged in the second through hole; a second annular inner groove is formed in the middle of the second through hole; the second annular baffle is sleeved on the middle part of the limiting rod and movably arranged in the second annular inner groove; the second spring is sleeved on the limiting rod and located in the second annular inner groove; one end of the second spring is connected to the side of the second annular inner groove away from the annular support block, and the other end of the second spring is connected to the second annular baffle; the elastic force of the second spring makes the second annular baffle abut against the side of the second annular inner groove close to the annular support block; a plurality of limiting holes are uniformly formed in the outer wall of the annular support block in the circumferential direction; one end of the limiting rod is used to protrude out of the second through hole and be embedded in the limiting hole.

[0013] Preferably, the limiting component further comprises a connecting block, a first connecting plate and a second connecting plate; the connecting block is connected to one end of the limiting rod protruding out of the outer wall of the sleeve ring; the first connecting plate is hingedly connected to one side of the connecting block; the second connecting plate is hingedly connected to the other side of the connecting block; the first connecting plate and the second connecting plate are symmetrical to the limiting rod; the first connecting plate is parallel to the central axis of the sleeve ring relative to the hinged axis of the connecting block; the second connecting plate is parallel to the central axis of the sleeve ring relative to the hinged axis of the connecting block; when the first connecting plate is rotated to abut against the outer wall of the sleeve ring, the limiting rod protrudes out of the limiting hole.

[0014] Preferably, the support plate is provided with a plurality of air permeable holes.

[0015] Compared with the prior art, the present application has at least the following beneficial effects:

[0016] The tracheal cannula for bronchoscopy provided by the present application can solve the problem that the existing bronchoscopy cannula cannot be fixed relative to the tracheal cannula after being embedded into the tracheal cannula. Specifically, in use, the bronchoscope is embedded into the cannula body, at which time the second clamping block and the first clamping block jointly clamp the bronchoscope under the elastic force of the first spring to fix the position of the bronchoscope. Then the cannula body is inserted into the trachea through the mouth of the patient, then the support plate cover is arranged on the mouth of the patient, and the cannula body is fixed to the head of the patient by using the fixing assembly. When it is necessary to adjust the position of the bronchoscope relative to the cannula body, the second support block is driven by the driving component to move away from the first support block to no longer clamp the position of the bronchoscope, so that the position of the bronchoscope can be manually adjusted, and the operation is more convenient. BRIEF DESCRIPTION OF DRAWINGS

[0017] In order to more clearly illustrate the technical solutions in the embodiments of the present application or the prior art, the following will briefly introduce the drawings needed to be used in the embodiments or the prior art description. Obviously, the drawings in the following description only show some embodiments of the present application, and other drawings can also be obtained according to the structures shown in these drawings without any creative labor for those skilled in the art.

[0018] Figure 1 The structure schematic view of an embodiment of the tracheal cannula for bronchoscopy provided by the present application;

[0019] Figure 2 The structure schematic view of the clamping assembly of an embodiment of the tracheal cannula for bronchoscopy provided by the present application;

[0020] Figure 3 The structure schematic view of the limiting component of an embodiment of the tracheal cannula for bronchoscopy provided by the present application.

[0021] Explanation of reference signs:

[0022] 110, cannula body; 120, support plate; 130, oxygen supply tube; 140, first binding belt; 150, second binding belt; 160, annular support block; 170, collar; 180, bronchoscope; 190, first clamping block; 210, second clamping block; 220, moving rod; 230, first through hole; 240, first annular inner groove; 250, first annular baffle; 260, first spring; 270, connecting rope; 280, ball; 290, limiting hole; 310, limiting rod; 320, second through hole; 330, second annular inner groove; 340, second annular baffle; 350, second spring; 360, connecting block; 370, first connecting plate; 380, second connecting plate; 390, first pull ring; 410, second pull ring; 420, third pull ring.

[0023] The objectives, functional features and advantages of the present application will be further described with reference to the embodiments in combination with the accompanying drawings. DETAILED DESCRIPTION

[0024] The technical solutions in the embodiments of the present application will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present application. Obviously, the described embodiments are only part of the embodiments of the present application, rather than all the embodiments of the present application. Based on the embodiments in the present application, all the other embodiments obtained by a person of ordinary skill in the art without creative effort fall within the protection scope of the present application.

[0025] It should be noted that all the directionality indications (such as up, down, left, right, front, back, etc.) in the embodiments of the present application are only used to explain the relative position relationship, movement condition, etc. between components in a certain posture (as shown in the drawings), and if the certain posture changes, the directionality indications also change accordingly.

[0026] In addition, the descriptions such as “first”, “second” and the like in the present application are only for the purpose of description, and cannot be understood as indicating or implying the relative importance of the indicated technical features or implicitly indicating the number of the indicated technical features. Therefore, the features defined as “first”, “second” can explicitly or implicitly include at least one of the features. In the description of the present application, the meaning of “plurality” is at least two, for example, two, three, etc., unless otherwise explicitly specified and limited.

[0027] In the present application, unless otherwise explicitly specified and limited, the terms “connection”, “fixation” and the like should be understood in a broad sense, for example, “fixation” can be fixed connection, or detachable connection, or integral; can be mechanical connection, or electrical connection; can be direct connection, or indirect connection through an intermediate medium; can be the internal connection of two elements or the interaction relationship between two elements, unless otherwise explicitly limited. For a person of ordinary skill in the art, the specific meaning of the above terms in the present application can be understood according to the specific circumstances.

[0028] In addition, the technical solutions of each embodiment of the present application can be combined with each other, but it must be based on the fact that a person of ordinary skill in the art can realize it, and when the combination of technical solutions appears contradictory or unachievable, it should be considered that the combination of technical solutions does not exist, and is not within the protection scope of the present application.

[0029] The present application provides a tracheal intubation tube for bronchoscopy.

[0030] Please refer to the accompanying drawings Figure 1 - the accompanying drawings Figure 3The tracheal cannula for bronchoscope 180 examination provided by the application can solve the problem that the existing bronchoscope 180 cannot be fixed in position relative to the tracheal cannula after being embedded in the tracheal cannula. Specifically, when in use, the bronchoscope 180 is embedded in the cannula body 110, at this time, under the elastic force of the first spring 260, the second clamping block 210 and the first clamping block 190 jointly clamp the bronchoscope 180 to fix the position of the bronchoscope 180. Then, the cannula body 110 is inserted into the trachea through the mouth of the patient, then the support plate 120 is covered on the mouth of the patient, and the cannula body 110 is fixed to the head of the patient by using the fixing assembly. When it is necessary to adjust the position of the bronchoscope 180 relative to the cannula body 110, the second clamping block 210 is driven to move away from the first clamping block 190 by the driving component, so that the position of the bronchoscope 180 is no longer clamped and fixed, and the position of the bronchoscope 180 can be manually adjusted, which is more convenient to operate.

[0031] The tracheal cannula for bronchoscope 180 examination provided by the application can solve the problem that the existing bronchoscope 180 cannot be fixed in position relative to the tracheal cannula after being embedded in the tracheal cannula. Specifically, when in use, the bronchoscope 180 is embedded in the cannula body 110, at this time, under the elastic force of the first spring 260, the second clamping block 210 and the first clamping block 190 jointly clamp the bronchoscope 180 to fix the position of the bronchoscope 180. Then, the cannula body 110 is inserted into the trachea through the mouth of the patient, then the support plate 120 is covered on the mouth of the patient, and the cannula body 110 is fixed to the head of the patient by using the fixing assembly. When it is necessary to adjust the position of the bronchoscope 180 relative to the cannula body 110, the second clamping block 210 is driven to move away from the first clamping block 190 by the driving component, so that the position of the bronchoscope 180 is no longer clamped and fixed, and the position of the bronchoscope 180 can be manually adjusted, which is more convenient to operate.

[0032] In addition, the fixing assembly comprises a first elastic band 140 and a second elastic band 150; the first elastic band 140 is connected to one side of the support plate 120; the second elastic band 150 is connected to the other side of the support plate; a first magic tape (not shown) is arranged on the side of the first elastic band 140 away from the support plate 120; a second magic tape (not shown) is arranged on the side of the second elastic band 150 away from the support plate 120; the first magic tape is used to be attached to the second magic tape, so that the first elastic band 140 is connected to the second elastic band 150.

[0033] By arranging the first elastic band 140 and the second elastic band 150, the bronchoscope can be more conveniently fixed to the head of the user.

[0034] Meanwhile, the side of the first clamping block 190 opposite to the second clamping block 210 is formed with a first arc-shaped groove (not numbered); the side of the second clamping block 210 opposite to the first clamping block 190 is formed with a second arc-shaped groove (not numbered); a first elastic buffer layer (not shown) is arranged in the first arc-shaped groove; a second elastic buffer layer (not shown) is arranged in the second arc-shaped groove. In this way, the bronchoscope 180 can be more conveniently clamped and fixed.

[0035] In addition, the driving component comprises a moving rod 220, a first spring 260 and a first annular baffle 250; the annular support block 160 is provided with a first through hole 230; a first annular inner groove 240 is arranged in the middle of the first through hole 230; the first annular inner groove 240 and the first through hole 230 share a central axis; the inner diameter of the first annular inner groove 240 is greater than that of the first through hole 230; the moving rod 220 is slidably arranged in the first through hole 230, and the moving rod 220 and the first through hole 230 share a central axis; the first annular baffle 250 is movably arranged in the first annular inner groove 240; the first spring 260 is sleeved on the moving rod 220, and the first spring 260 is arranged in the first annular inner groove 240; one end of the first spring 260 is connected to the side of the first annular inner groove 240 away from the bronchoscope body 110, and the other end of the first annular inner groove 240 is connected to the first annular baffle 250; the elastic force of the first spring 260 makes the first annular baffle 250 abut against the side of the first annular inner groove 240 close to the bronchoscope body 110, and when the first annular baffle 250 abuts against the side of the first annular inner groove 240 close to the bronchoscope body 110, the first clamping block 190 and the second clamping block 210 can clamp and fix the bronchoscope 180. Through the above calculation scheme, the structure and function of the clamping assembly are further improved.

[0036] Meanwhile, the central axis of the aforementioned moving rod 220 is perpendicular to the central axis of the annular support block 160; the driving component also includes a collar 170 and a connecting rope 270; the collar 170 is rotatably sleeved on the annular support block 160; the rotation axis of the collar 170 and the annular support block 160 share the same central axis; one end of the connecting rope 270 is connected to one end of the moving rod 220 away from the insertion tube body 110; the other end of the connecting rope 270 is movably inserted through the first through hole 230 and connected to the inner wall of the collar 170.

[0037] With the above technical solution, when it is necessary to adjust the position of the bronchoscope 180 relative to the intubation tube body 110, the collar 170 can be manually rotated to pull the connecting rope 270, thereby pulling the moving rod 220 to move away from the intubation tube body 110, and then pulling the second clamping block 210 to move away from the first clamping block 190, so that the second clamping block 210 and the first clamping block 190 no longer clamp and fix the bronchoscope 180; after the position of the bronchoscope 180 is adjusted, the collar 170 is manually released, and under the elastic force of the first spring 260, the first clamping block 190 and the second clamping block 210 clamp and fix the bronchoscope 180 again.

[0038] Furthermore, the inner wall of the collar 170 is provided with a first annular groove (not shown); the outer wall of the annular support block 160 is provided with a second annular groove (not shown); the central axis of the first annular groove and the central axis of the second annular groove are collinear, and the central axis of the first annular groove coincides with the central axis of the annular support block 160; a plurality of ball bearings 280 are rolled and embedded between the first annular groove and the second annular groove. Through the above technical solution, the specific scheme of the collar 170 rotating and sleeved on the annular support block 160 is improved.

[0039] For details, see attached. Figure 2 As shown, the elastic force of the first spring 260 keeps the connecting rope 270 taut, and when the connecting rope 270 is taut, the connecting rope 270 and the moving rod 220 share the same central axis.

[0040] Further, the clamping assembly further comprises a limiting component; the limiting component comprises a limiting rod 310, a second spring 350 and a second annular baffle 340; the sleeve ring 170 is provided with a second through hole 320; the central axis of the second through hole 320 is perpendicular to the central axis of the sleeve ring 170; the limiting rod 310 is slidably arranged in the second through hole 320; the second through hole 320 is provided with a second annular inner groove 330 in the middle; the second annular baffle 340 is sleeved on the middle part of the limiting rod 310 and movably arranged in the second annular inner groove 330; the second spring 350 is sleeved on the limiting rod 310 and located in the second annular inner groove 330; one end of the second spring 350 is connected to the side of the second annular inner groove 330 away from the annular support block 160, and the other end of the second spring 350 is connected to the second annular baffle 340; the elastic force of the second spring 350 makes the second annular baffle 340 abut against the side of the second annular inner groove 330 close to the annular support block 160; a plurality of limiting holes 290 are uniformly arranged on the outer wall of the annular support block 160 in the circumferential direction; one end of the limiting rod 310 is used to protrude out of the second through hole 320 and be embedded in the limiting hole 290.

[0041] Through the above technical solution, the structure and function of the clamping assembly are further improved, that is, when it is necessary to adjust the position of the bronchoscope 180 relative to the tracheal tube body 110, the limiting rod 310 can be manually pulled out, so that the limiting rod 310 is pulled out of the limiting hole 290, and then the sleeve ring 170 can be rotated to pull the connecting rope 270 and move the moving rod 220 away from the tracheal tube body 110; when the sleeve ring 170 is rotated to the position where the first clamping block 190 and the second clamping block 210 no longer clamp the bronchoscope 180, the limiting rod 310 can be released, and the limiting rod 310 is embedded in the limiting hole 290 again under the action of the second spring 350, so that the position of the sleeve ring 170 can be fixed to facilitate the medical staff to adjust the position of the bronchoscope 180; after the position of the bronchoscope 180 is adjusted, the limiting rod 310 is pulled out again, and the sleeve ring 170 is rotated to the initial position under the action of the first spring 260, so that the first clamping block 190 and the second clamping block 210 fix the position of the bronchoscope 180.

[0042] Specifically, the limiting part further comprises a connecting block 360, a first connecting plate 370 and a second connecting plate 380; the connecting block 360 is connected to one end of the limiting rod 310 extending out of the outer wall of the sleeve ring 170; the first connecting plate 370 is hinged to one side of the connecting block 360; the second connecting plate 380 is hinged to the other side of the connecting block 360; the first connecting plate 370 and the second connecting plate 380 are symmetrical to the limiting rod 310; the hinged axis of the first connecting plate 370 relative to the connecting block 360 is parallel to the central axis of the sleeve ring 170; the hinged axis of the second connecting plate 380 relative to the connecting block 360 is parallel to the central axis of the sleeve ring 170; when the first connecting plate 370 rotates to abut against the outer wall of the sleeve ring 170, the limiting rod 310 extends out of the limiting hole 290; the outer wall of the connecting block 360 is provided with a first pull ring 390, and the first connecting plate 370 is provided with a second pull ring 410; the second connecting plate 380 is provided with a third pull ring 420.

[0043] By setting the pull ring, the limiting rod 310 can be pulled out, and by setting the first connecting plate 370 and the second connecting plate 380, the position of the limiting rod 310 can be fixed by rotating the first connecting plate 370 and the second connecting plate 380 after the limiting rod 310 is pulled out, so that the first connecting plate 370 and the second connecting plate 380 abut against the outer wall of the sleeve ring 170, respectively, thereby no longer needing to manually fix the limiting rod 310.

[0044] The above description is only the preferred embodiments of the present application, and does not limit the patent scope of the present application, and any equivalent structural transformation made under the inventive concept of the present application, or direct / indirect application in other related technical fields, is included in the patent protection scope of the present application.

Claims

1. A tracheal tube for bronchoscopy, characterized in that, The utility model provides an oxygen supply tube fixing device for bronchoscope, including intubation body, fixed component and clamping component, intubation body is used to move and set bronchoscope, and the one end of intubation body is provided with oxygen supply pipe, and the outer wall of intubation body is provided with support plate on the side close to oxygen supply pipe, the fixed component sets up in support plate for fixing intubation body on the head of user, and the clamping component includes first clamping block, second clamping block, moving rod, first annular baffle, first spring, annular support block and drive component, annular support block is sleeved on the outer wall of intubation body, and annular support block is located on the side of oxygen supply pipe away from support plate, the first clamping block is fixed in the inside of intubation body, the second clamping block is opposite to first clamping block, the moving rod is connected to the side of second clamping block away from first clamping block, the moving rod is slid through the wall of intubation body and annular support block, the first spring is arranged in annular support block and is connected to moving rod for driving second clamping block to move to the direction close to first clamping block, thereby clamping and fixing the position of bronchoscope, and the drive component is used for driving second clamping block to move to the direction away from first clamping block to no longer clamp and fix the position of bronchoscope, The drive component includes first annular baffle, the first through -hole is opened in annular support block, the middle part of first through -hole is opened with first annular inner groove, first annular inner groove and first through -hole share the central axis, the inner diameter of first annular inner groove is greater than the inner diameter of first through -hole, the moving rod is slid through first through -hole, and the moving rod and first through -hole share the central axis, the first annular baffle is movably embedded in first annular inner groove, the first spring is sleeved on the moving rod, and the first spring is arranged in first annular inner groove, one end of first spring is connected to the side of first annular inner groove away from intubation body, the other end of first annular inner groove is connected to first annular baffle, the elastic force of first spring makes first annular baffle abut on the side of first annular inner groove close to intubation body, when first annular baffle abuts on the side of first annular inner groove close to intubation body, first clamping block and second clamping block clamp and fix bronchoscope, The central axis of moving rod is perpendicular to the central axis of annular support block, the drive component further includes sleeve ring and connecting rope, the sleeve ring is rotatably sleeved on annular support block, the rotation axis of sleeve ring is coaxial with annular support block, one end of connecting rope is connected to the end of moving rod away from intubation body, and the other end of connecting rope is movably arranged in first through -hole and is connected to the inner wall of sleeve ring, The inner wall of sleeve ring is opened with first annular groove, the outer wall of annular support block is opened with second annular groove, the central axis of first annular groove is collinear with the central axis of second annular groove, and the central axis of first annular groove is coincident with the central axis of annular support block, a plurality of balls are rollingly embedded between first annular groove and second annular groove, and the support plate is opened with a plurality of breathable holes.

2. The endotracheal tube for bronchoscopy according to claim 1, wherein The fixing assembly comprises a first elastic band and a second elastic band; the first elastic band is connected to one side of the support plate; the second elastic band is connected to the other side of the support plate; a first magic tape is arranged on the side of the first elastic band away from the support plate; a second magic tape is arranged on the side of the second elastic band away from the support plate; the first magic tape is used to be attached to the second magic tape, so that the first elastic band is connected to the second elastic band.

3. The endotracheal tube for bronchoscopy according to claim 1, wherein The side of the first clamping block opposite to the second clamping block is formed with a first arc-shaped groove; the side of the second clamping block opposite to the first clamping block is formed with a second arc-shaped groove; the first arc-shaped groove is provided with a first elastic buffer layer; the second arc-shaped groove is provided with a second elastic buffer layer.

4. The endotracheal tube for bronchoscopy according to claim 1, wherein The elastic force of the first spring keeps the connecting rope in a straight state, and when the connecting rope is kept in the straight state, the connecting rope is coaxial with the moving rod.

5. The endotracheal tube for bronchoscopy according to claim 1, wherein The clamping assembly further comprises a limiting component; the limiting component comprises a limiting rod, a second spring and a second annular baffle; the sleeve ring is provided with a second through hole; the central axis of the second through hole is perpendicular to the central axis of the sleeve ring; the limiting rod is slidably arranged in the second through hole; the second through hole is provided with a second annular inner groove in the middle; the second annular baffle is sleeved on the middle part of the limiting rod and movably arranged in the second annular inner groove; the second spring is sleeved on the limiting rod and located in the second annular inner groove; one end of the second spring is connected to the side of the second annular inner groove away from the annular support block, and the other end of the second spring is connected to the second annular baffle; the elastic force of the second spring makes the second annular baffle abut against the side of the second annular inner groove close to the annular support block; a plurality of limiting holes are uniformly arranged on the outer wall of the annular support block in the circumferential direction; one end of the limiting rod is used to protrude out of the second through hole and be embedded in the limiting hole.

6. A tracheal tube for bronchoscopy according to claim 5, wherein, The limiting component further comprises a connecting block, a first connecting plate and a second connecting plate; the connecting block is connected to one end of the limiting rod protruding out of the outer wall of the sleeve ring; the first connecting plate is hingedly connected to one side of the connecting block; the second connecting plate is hingedly connected to the other side of the connecting block; the first connecting plate and the second connecting plate are symmetrical to the limiting rod; the first connecting plate is parallel to the central axis of the sleeve ring relative to the hinged axis of the connecting block; the second connecting plate is parallel to the central axis of the sleeve ring relative to the hinged axis of the connecting block; when the first connecting plate is rotated to abut against the outer wall of the sleeve ring, the limiting rod protrudes out of the limiting hole.

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