阅读说明：本技术 一种气管异物手术用两级支气管镜的使用方法 (Using method of two-stage bronchoscope for foreign tracheal body surgery ) 是由 张晓絮 李琦 周艾 黄群 田莉 李朋 张建亚 谢利生 于 2021-08-12 设计创作，主要内容包括：本发明公开了一种气管异物手术用两级支气管镜的使用方法,包括负压抽吸取细小易碎异物的方法,磁力吸附取金属异物的方法,以及使用异物钳夹取普通异物的方法。软镜管套装在硬镜管中,软镜管管壁可以做到较薄,软镜管内的异物通道较大,两级支气管镜配合异物钳,可以轻松夹取二级支气管及三级支气管处的硬物；并且,在夹取二级支气管处的硬物时,一旦异物向下滑落到三级支气管,可将软镜管下端伸出到达三级支气管,配合异物钳可实现良好的手术效果,且可避免二次手术给患者身体带来的伤害。(The invention discloses a use method of a two-stage bronchoscope for a tracheal foreign body operation, which comprises a method for sucking fine fragile foreign bodies by negative pressure, a method for taking metal foreign bodies by magnetic adsorption and a method for clamping common foreign bodies by using foreign body forceps. The soft lens tube is sleeved in the hard lens tube, the tube wall of the soft lens tube can be thin, a foreign body channel in the soft lens tube is large, and the two-stage bronchoscope can easily clamp hard objects at the positions of the two-stage bronchus and the three-stage bronchus by matching with a foreign body clamp; and when the hard object at the position of the second-stage bronchus is clamped, once the foreign object slides downwards to the third-stage bronchus, the lower end of the soft lens tube can be stretched out to reach the third-stage bronchus, a good operation effect can be realized by matching with a foreign object clamp, and the injury to the body of a patient caused by a secondary operation can be avoided.)

1. A use method of a two-stage bronchoscope for a foreign tracheal body surgery is characterized in that:

the two-stage bronchoscope comprises a tube-scope main body, a hard scope tube, a soft scope tube and a handle part, wherein an adjusting device used for adjusting the length of the soft scope tube extending out of the bottom of the hard scope tube is arranged in the handle part; the soft lens tube comprises an outer hose and an inner hose which are concentrically sleeved, the outer hose and the inner hose are both metal hoses, the upper end of each metal outer hose is wound with a magnetic coil, and the magnetic coil is used for enabling the metal hoses to generate magnetic force after being electrified; an adjusting knob for adjusting the magnetic force is arranged on the handle part; an annular air inlet cavity is arranged between the inner hose and the outer hose, a plurality of air inlet holes are uniformly distributed on the pipe wall of the outer hose in the axial direction, the air inlet channel is communicated with the annular air inlet cavity through the air inlet holes, the pipe cavity of the inner hose is a foreign matter channel and an air exhaust channel, an illuminating optical fiber and an image transmitting optical fiber are axially arranged in the annular air inlet cavity, and the upper ends of the illuminating optical fiber and the image transmitting optical fiber penetrate through the optical fiber channel;

when the device is used, the air inlet channel is connected with an oxygen pump or a breathing machine, and the illuminating optical fiber and the image transmission optical fiber are respectively connected with the optical fiber illuminating system and the optical fiber imaging system; an operator holds the handle part by hand and inserts the hard endoscope tube sleeved with the soft endoscope tube into a human body bronchus, the position of foreign matters is checked through the optical fiber imaging system, and when the foreign matters are found to be positioned at a secondary trachea, the foreign matters are taken out through a foreign matter channel by using a foreign matter clamp; in the process of clamping the foreign bodies, once the foreign bodies slip to the third-stage trachea under the action of external force, the lower end of the soft lens tube extends out of the hard lens tube to reach the third-stage trachea through the adjusting device, and the foreign bodies are taken out by using the foreign body forceps.

2. The method for using a two-stage bronchoscope for foreign tracheal surgery according to claim 1, wherein the method comprises the following steps: when the foreign matters are found to be fine and fragile foreign matters, the suction apparatus interface is connected with the suction apparatus, the tube cavity of the inner hose generates negative pressure by controlling the inflation rate and the suction rate, and the foreign matters at the position of the second-level trachea or the third-level trachea are sucked out by negative pressure suction.

3. The method for using a two-stage bronchoscope for foreign tracheal surgery according to claim 2, wherein the method comprises the following steps: the negative pressure value is less than 0 and more than-0.05 MPa.

4. The method for using a two-stage bronchoscope for foreign tracheal surgery according to claim 1, wherein the method comprises the following steps: when the foreign bodies are detected to be small-particle metal or magnetic beads, the magnetic force of the metal hose is adjusted through the adjusting knob, and the foreign bodies located at the second-level air pipe or the third-level air pipe are taken out through magnetic adsorption.

5. The method for using a two-stage bronchoscope for foreign tracheal surgery according to claim 4, wherein the method comprises the following steps: the magnetic force is controlled between 0N and 10N.

6. The method for using a two-stage bronchoscope for foreign tracheal surgery according to claim 1, wherein the method comprises the following steps: the handle part is also internally provided with a swinging device for adjusting the lower end of the soft lens tube to rotate and swing, and when the soft lens tube is used, the soft lens tube extends out of the bottom of the hard lens tube and then is controlled to swing within a range of-90 degrees to 90 degrees through the swinging device so as to conveniently probe the inlet position of the three-stage trachea.

7. The method for using a two-stage bronchoscope for foreign tracheal surgery according to claim 6, wherein the method comprises the following steps: the swinging device comprises a traction trigger, the traction trigger is rotatably arranged in the handle part, one end of the traction trigger extends to the outer side of the handle part, the other end of the traction trigger is connected with a traction wire, the other end of the traction wire penetrates through a tube cavity of the inner hose to be connected with the lower end part of the soft lens tube, the traction trigger is moved, and the traction wire drives the soft lens tube to swing in a rotating mode.

8. The method for using a two-stage bronchoscope for foreign tracheal surgery according to claim 1, wherein the method comprises the following steps: the adjusting device comprises a driving gear, a rack and a poking wheel; the driving gear is arranged in the cavity of the handle part, a rack is axially arranged on the outer wall of the flexible lens tube, the driving gear is meshed with the rack, the driving gear rotates, and the rack drives the lower end of the flexible lens tube to extend out of the bottom of the hard lens tube to reach the third-stage trachea; the gear shaft of the driving gear extends out of the inner cavity of the handle part and is coaxially connected with the poking wheel, and the poking wheel is rotated to drive the driving gear to synchronously rotate.

9. The method for using a two-stage bronchoscope for foreign tracheal surgery according to claim 1, wherein the method comprises the following steps: the two groups of illumination optical fibers are symmetrically arranged at two sides of the air inlet cavity, the two groups of image transmission optical fibers are arranged at the center parts of the two groups of illumination optical fibers respectively.

10. The method for using a two-stage bronchoscope for foreign tracheal surgery according to claim 9, wherein the method comprises the following steps: the lighting optical fiber and the image transmission optical fiber penetrate through the whole flexible lens tube, and the lower ends of the lighting optical fiber and the image transmission optical fiber are bonded through the adhesive and are attached with the sealing lens.

Technical Field

The invention relates to the technical field of medical instruments, in particular to a using method of a two-stage bronchoscope for a foreign tracheal body surgery.

Background

The current trachea foreign body operation uses hard bronchoscope cooperation foreign body pincers, or soft bronchoscope cooperation foreign body pincers two kinds of operation modes, expands the trachea through hard bronchoscope or soft bronchoscope, and the operation doctor uses the foreign body pincers to take out the foreign body through the foreign body passageway of bronchoscope. The pipe diameter of current hard bronchoscope is thicker and unable crooked, can't insert tertiary bronchus, uses hard bronchoscope cooperation foreign matter forceps holder to get when being located the foreign matter of tertiary bronchus department, can only get through operation doctor's sensation and press from both sides and get the foreign matter, is difficult to reach good operation effect. The soft texture of current soft bronchoscope is soft, and the flexible, the passageway is narrow, can insert tertiary bronchus clamp and get the foreign matter that is located tertiary bronchus department, but can't press from both sides the great foreign matter that is located secondary bronchus department. When the operating doctor uses hard bronchoscope cooperation foreign matter forceps holder to get the great foreign matter of second grade bronchus department, getting the in-process of foreign matter at the clamp, the foreign matter can be slipped down to tertiary bronchus under the effect of external force, just at this moment need extract hard bronchoscope, inserts soft bronchoscope again and carries out the secondary operation, causes very big injury for patient's health.

Disclosure of Invention

In order to solve the technical problem, the invention provides a using method of a two-stage bronchoscope for a foreign tracheal body surgery.

The technical scheme adopted by the invention is as follows:

a method for using a two-stage bronchoscope for a tracheal foreign body surgery is disclosed, wherein the two-stage bronchoscope comprises a tube scope main body, a hard scope tube, a soft scope tube and a handle part, an adjusting device for adjusting the length of the soft scope tube extending out of the bottom of the hard scope tube is arranged in the handle part, the tube scope main body is provided with a central channel, an air inlet channel and an optical fiber channel, the hard scope tube is fixedly connected to the bottom of the central channel, the soft scope tube is telescopically sleeved in the hard scope tube, and the upper end of the soft scope tube extending out of the tube scope main body is provided with an aspirator interface; the soft lens tube comprises an outer hose and an inner hose which are concentrically sleeved, the outer hose and the inner hose are both metal hoses, the upper end of each metal outer hose is wound with a magnetic coil, and the magnetic coil is used for enabling the metal hoses to generate magnetic force after being electrified; an adjusting knob for adjusting the magnetic force is arranged on the handle part; an annular air inlet cavity is arranged between the inner hose and the outer hose, a plurality of air inlet holes are uniformly distributed on the pipe wall of the outer hose in the axial direction, the air inlet channel is communicated with the annular air inlet cavity through the air inlet holes, the pipe cavity of the inner hose is a foreign matter channel and an air exhaust channel, an illuminating optical fiber and an image transmitting optical fiber are axially arranged in the annular air inlet cavity, and the upper ends of the illuminating optical fiber and the image transmitting optical fiber penetrate through the optical fiber channel;

when the device is used, the air inlet channel is connected with an oxygen pump or a breathing machine, and the illuminating optical fiber and the image transmission optical fiber are respectively connected with the optical fiber illuminating system and the optical fiber imaging system; an operator holds the handle part by hand and inserts the hard endoscope tube sleeved with the soft endoscope tube into a human body bronchus, the position of foreign matters is checked through the optical fiber imaging system, and when the foreign matters are found to be positioned at a secondary trachea, the foreign matters are taken out through a foreign matter channel by using a foreign matter clamp; in the process of clamping the foreign bodies, once the foreign bodies slip to the third-stage trachea under the action of external force, the lower end of the soft lens tube extends out of the hard lens tube to reach the third-stage trachea through the adjusting device, and the foreign bodies are taken out by using the foreign body forceps.

Further, when the foreign matters are found to be fine and fragile foreign matters, the suction apparatus interface is connected with the suction apparatus, the tube cavity of the inner hose generates negative pressure by controlling the inflation rate and the suction rate, and the foreign matters at the position of the secondary trachea or the tertiary trachea are sucked out through negative pressure suction.

Further, the negative pressure value is less than 0 and more than-0.05 MPa.

Further, when the foreign matters are detected to be small-particle metal or magnetic beads, the magnetic force of the metal hose is adjusted through the adjusting knob, and the foreign matters located at the second-level air pipe or the third-level air pipe are taken out through magnetic adsorption.

Furthermore, the magnetic force is controlled between 0N and 10N.

Furthermore, a swinging device for adjusting the lower end of the soft lens tube to rotate and swing is arranged in the handle part, and when the soft lens tube is used, the soft lens tube extends out of the bottom of the hard lens tube and then is controlled to swing within a range of-90 degrees to 90 degrees through the swinging device so as to conveniently probe the inlet position of the three-stage trachea.

Furthermore, the swinging device comprises a traction trigger, the traction trigger is rotatably arranged in the handle part, one end of the traction trigger extends to the outer side of the handle part, the other end of the traction trigger is connected with a traction wire, the other end of the traction wire penetrates through a tube cavity of the inner hose to be connected with the lower end part of the soft lens tube, the traction trigger is moved, and the traction wire drives the soft lens tube to swing in a rotating mode.

Furthermore, the adjusting device comprises a driving gear, a rack and a poking wheel; the driving gear is arranged in the cavity of the handle part, a rack is axially arranged on the outer wall of the flexible lens tube, the driving gear is meshed with the rack, the driving gear rotates, and the rack drives the lower end of the flexible lens tube to extend out of the bottom of the hard lens tube to reach the third-stage trachea; the gear shaft of the driving gear extends out of the inner cavity of the handle part and is coaxially connected with the poking wheel, and the poking wheel is rotated to drive the driving gear to synchronously rotate.

Furthermore, two groups of lighting optical fibers are arranged, the two groups of lighting optical fibers are symmetrically arranged on two sides of the air inlet cavity, two groups of image transmission optical fibers are arranged, and the two groups of image transmission optical fibers are respectively arranged at the central parts of the two groups of lighting optical fibers.

Furthermore, the lighting optical fiber and the image transmission optical fiber penetrate through the whole flexible lens tube, and the lower ends of the lighting optical fiber and the image transmission optical fiber are bonded through the adhesive and are attached with the sealing lens.

The invention has the beneficial effects that:

1. the soft lens tube is sleeved in the hard lens tube, the tube wall of the soft lens tube can be thin, a foreign body channel in the soft lens tube is large, and the two-stage bronchoscope can easily clamp hard objects at the positions of the two-stage bronchus and the three-stage bronchus by matching with a foreign body clamp; and when the hard object at the position of the second-stage bronchus is clamped, once the foreign object slides downwards to the third-stage bronchus, the lower end of the soft lens tube can be stretched out to reach the third-stage bronchus, a good operation effect can be realized by matching with a foreign object clamp, and the injury to the body of a patient caused by a secondary operation can be avoided.

2. By controlling the air inflation amount and the air suction amount, transient negative pressure is generated in the trachea, and the effect of quickly attracting fine fragile foreign matters and liquid in the trachea can be realized.

3. By utilizing the electromagnetic technology, the metal soft mirror tube generates magnetic force by controlling the on-off and micro-current regulation of the direct current power supply, and the metal foreign bodies in the deep part of the trachea can be adsorbed on the soft mirror tube, thereby realizing the function of adsorbing the foreign bodies by the magnetic force.

Drawings

Fig. 1 is a schematic diagram of the structure of a two-stage bronchoscope of the present invention.

Fig. 2 is a partial sectional view of fig. 1.

Fig. 3 is a partially enlarged view of a portion a in fig. 1.

Fig. 4 is a sectional view taken along the direction B-B in fig. 3.

Detailed Description

In order to make the objects, technical solutions and advantages of the present invention more apparent, the technical solutions of the present invention will be described in detail and fully with reference to the accompanying drawings and a preferred embodiment.

Example 1

Referring to fig. 1 to 4, the present embodiment provides a two-stage bronchoscope for a tracheal foreign body surgery, including a tube lens main body 10, a hard lens tube 20 and a soft lens tube 30, wherein a central channel penetrating through a top surface and a bottom surface of the tube lens main body 10 is disposed at a central portion of the tube lens main body, an air inlet channel 12 and an optical fiber channel 13 communicated with the central channel are disposed at a side surface of the tube lens main body, the hard lens tube 20 is fixedly connected to a bottom portion of the central channel, the soft lens tube 30 is slidably sleeved in the hard lens tube 20, an aspirator port is disposed at an upper end of the soft lens tube 30 extending out of the tube lens main body 10, and a lower end of the soft lens tube 30 extending out of the hard lens tube 20 reaches a third-stage trachea; the flexible endoscope tube 30 comprises an outer flexible tube 31 and an inner flexible tube 32 which are concentrically sleeved, an annular air inlet cavity 35 is arranged between the inner flexible tube 31 and the outer flexible tube 32, the upper ends of the outer flexible tube 31 and the inner flexible tube 32 are connected through an adhesive 70 filled in the annular air inlet cavity, the upper end of the annular air inlet cavity 35 is sealed by the adhesive 70, a plurality of air inlet holes 311 are axially and uniformly distributed on the tube wall of the outer flexible tube 31, the air inlet channel 12 is communicated with the annular air inlet cavity 35 through the air inlet holes 311, a tube cavity 321 of the inner flexible tube 32 is a foreign body channel and an air suction channel, an illuminating optical fiber 33 and an image transmitting optical fiber 34 are axially arranged in the annular air inlet cavity 35, the upper ends of the illuminating optical fiber 33 and the image transmitting optical fiber 34 penetrate through the optical fiber channel 12 to be respectively connected with an optical fiber illuminating system and an optical fiber imaging system, the air inlet channel 12 is provided with an air inlet, the air inlet is used for connecting with an oxygen pump or a breathing machine, and the suction apparatus interface is used for connecting with a suction apparatus.

The suction device is characterized in that the air is inflated into the bronchoscope through the air inlet, the air is exhausted through the tube cavity 321, the circulation phenomenon of small spaces is created through internal and external air circulation, the negative pressure of the short small spaces is formed by controlling the speed and the flow of inflation and air exhaust, the air and foreign matters in the air tube are sucked by utilizing the negative pressure, and the suction function of the foreign matters is realized. The air inlets 311 are uniformly distributed on the outer side of the soft endoscope tube, so that the inflation pressure can be better homogenized, and the trachea of the patient is prevented from being damaged due to the instant increase of air pressure due to the concentrated air flow.

In this embodiment, the tube lens body 10 is provided with a handle portion 14, a cavity 141 is provided in the handle portion 14, an enlarged cylindrical hole 111 is provided in the middle of the central passage, and the cavity 141 communicates with the cylindrical hole 111.

The cavity 141 is provided with a driving gear 52, the driving gear 52 is rotatably arranged through a gear shaft, and the gear shaft extends upwards to the upper surface of the handle and is coaxially connected with a poking wheel 53. The outer hose 31 is provided with a rack 51 axially on the outer wall of the cylindrical hole 111, and the driving gear 52 is meshed with the rack 51. The operator rotates the dial wheel 53 to drive the driving gear 52 to rotate synchronously, and the driving gear 52 rotates to drive the rack 51 to move upwards or downwards, so as to drive the lower end of the flexible lens tube 30 to retract or extend from the bottom of the hard lens tube 20. The operator rotates the dial wheel to retract or extend the soft lens tube, and the distance and the position of the soft lens tube 30 inserted into the three-stage trachea can be accurately controlled under the matching of the image transmission optical fiber and the illumination optical fiber, so that the operation efficiency is improved.

In this embodiment, the outer hose 31 and the inner hose 32 are both metal hoses, the upper end of the outer hose 31 is wound with the magnetic coil 40, the magnetic coil 40 is located in the cylindrical hole 111, a dc power supply (not shown) is disposed in the cavity 141, and the magnetic coil 40 is connected to the dc power supply through a wire. The handle part is provided with a power supply adjusting button which is used for adjusting the current of the direct current power supply. The operator makes magnetic coil 40 circular telegram through manual control power adjustment button, and the soft mirror tube of metal produces magnetic force under magnetic coil 40's effect, through metal conduction, with magnetic force conduction to mirror tube front end for the mirror tube front end has certain magnetism for adsorb the metal material of mistake income trachea inside, smooth ball form object such as small iron marble, magnetic bead. Smooth ball form metal object is hardly blocked with foreign matter pincers and is taken out, utilizes magnetic force adsorption, and absorption metal ball that can be firm provides another brand-new solution for trachea foreign matter operation.

This application still can adjust the magnetic force size through adjusting power adjustment button, and its magnetic force size is steerable between 0 ~ 10N. In other embodiments, the magnetic coil 40 may be connected to an external control system through a wire, and the control system may be operated to adjust the magnitude of the magnetic force.

In this embodiment, a traction trigger 15 is further disposed in the cavity 141, the middle of the traction trigger 15 is rotatably disposed in the handle portion 14, one end of the traction trigger 15 extends to the outer side of the handle portion to serve as an operating handle, the other end of the traction trigger 15 is connected with a traction wire 151, and the other end of the traction wire 151 passes through a through groove formed in the inner side wall of the central passage to be connected with the lower end portion of the endoscope tube 20, as shown in fig. 2, an operator moves the traction trigger 15, and the traction wire 151 drives the endoscope tube to rotate and swing, so that an inlet of a tertiary air tube can be found more quickly and conveniently, and insertion of the endoscope tube and foreign matter heating inspection and clamping are facilitated.

In this embodiment, two sets of illumination fibers 33 are provided, two sets of illumination fibers are symmetrically disposed on both sides of the air inlet cavity, two sets of image transmission fibers 34 are provided, and two sets of image transmission fibers 34 are respectively disposed at the central portions of the two sets of illumination fibers 33. The illumination optical fiber 33 and the image transmission optical fiber 34 are distributed on two sides of the annular air inlet cavity 35, each side approximately occupies the 1/4 section of the annular air inlet cavity 35, the image transmission optical fiber 34 is coated in the illumination optical fiber 33, and the illumination and image transmission effects are good. The lighting optical fiber 33 and the image transmission optical fiber 34 penetrate through the whole soft lens tube, the lower ends of the lighting optical fiber and the image transmission optical fiber are bonded through the adhesive and are attached with the sealing lens, and the sealing lens can prevent mucus in an air tube from entering the optical fiber and influencing lighting and image transmission effects.

The upper ends of the illumination optical fiber 33 and the image transmission optical fiber 34 are respectively connected with the optical fiber illumination system and the optical fiber imaging system through the optical fiber channel 12. The optical fiber lighting system is in the prior art, a light-emitting light source is arranged in the system, and the lighting optical fiber 33 is connected with the light source and transmits light energy to the front end of the endoscope tube to light the interior of the trachea. The optical fiber lighting system is provided with a light source control button, and the brightness of a light source is adjusted by adjusting the light source control button, so that image taking observation and operation are facilitated. The image display system is used for converting the image collected by the optical fiber image transmission bundle 34 into a high-definition image and displaying the high-definition image on a display screen for observation and examination in the surgical process; image display systems are known in the art.

Example 2

The use method of the two-stage bronchoscope for the tracheal foreign body surgery in the embodiment 1 is that the air inlet channel 12 is connected with an oxygen pump or a breathing machine, the lighting optical fiber 33 and the image transmission optical fiber 34 are respectively connected with the optical fiber lighting system and the optical fiber imaging system, the brightness of the light source is adjusted by adjusting the light source control button, and the foreign body image collected by the optical fiber image transmission beam 34 is clearly displayed on the display screen;

an operator holds the handle part 14 by hand and inserts the hard endoscope tube 20 sleeved with the soft endoscope tube 30 into a bronchus of a human body, inspects the position of foreign matters by observing the display screen, and takes out the foreign matters through the foreign matter channel 321 by using a foreign matter clamp when finding that the foreign matters are positioned at a secondary trachea; in the process of clamping foreign matters, once the foreign matters slide to the third-stage trachea under the action of an external force, the poking wheel 53 is rotated to drive the driving gear 52 to synchronously rotate, and the driving gear 52 rotates to drive the rack 51 to move downwards, so that the lower end of the soft lens tube 30 is driven to extend out of the bottom of the hard lens tube 20; meanwhile, the traction plate machine 15 is moved, the traction wire 151 drives the flexible endoscope tube to rotate and swing, the inlet of the third-level trachea is quickly found, the poking wheel 53 is continuously rotated to enable the lower end of the flexible endoscope tube to reach the third-level trachea, and the foreign body is taken out by using the foreign body forceps.

Example 3

The use method of the two-stage bronchoscope for the tracheal foreign body surgery in the embodiment 1 is that the air inlet channel 12 is connected with the oxygen pump, the lighting optical fiber 33 and the image transmission optical fiber 34 are respectively connected with the optical fiber lighting system and the optical fiber imaging system, the brightness of the light source is adjusted by adjusting the light source control button, and the foreign body image collected by the optical fiber image transmission beam 34 is clearly displayed on the display screen;

an operator holds the handle part 14 by hand and inserts the hard lens tube 20 sleeved with the soft lens tube 30 into a bronchus of a human body, inspects the position and the type of foreign matters by observing the display screen, connects an interface of the suction apparatus with the suction apparatus when the foreign matters are found to be small fragile foreign matters positioned at a three-stage bronchus, and rotates the poking wheel 53 so as to drive the lower end of the soft lens tube 30 to extend out of the bottom of the hard lens tube 20; meanwhile, the traction plate machine 15 is moved, the traction wire 151 drives the flexible endoscope tube to rotate and swing, the inlet of the three-stage trachea is quickly found, the poking wheel 53 is continuously rotated to enable the lower end of the flexible endoscope tube to reach the three-stage trachea, negative pressure of-0.02 to-0.05 MPa is generated in the tube cavity of the inner flexible tube by controlling the inflation rate of the oxygen pump and the suction rate of the suction device, and foreign matters are taken out by negative pressure suction.

Example 4

The use method of the two-stage bronchoscope for the tracheal foreign body surgery in the embodiment 1 is that the air inlet channel 12 is connected with the oxygen pump, the lighting optical fiber 33 and the image transmission optical fiber 34 are respectively connected with the optical fiber lighting system and the optical fiber imaging system, the brightness of the light source is adjusted by adjusting the light source control button, and the foreign body image collected by the optical fiber image transmission beam 34 is clearly displayed on the display screen;

an operator holds the handle part 14 by hand and inserts the hard lens tube 20 sleeved with the soft lens tube 30 into a bronchus of a human body, the position and the type of foreign matters are checked by observing the display screen, and when the foreign matters are found to be smooth spherical objects such as tiny iron marbles, magnetic beads and the like positioned at a three-stage bronchus, the poking wheel 53 is rotated so as to drive the lower end of the soft lens tube 30 to extend out of the bottom of the hard lens tube 20; move simultaneously and pull trigger 15, pull wire 151 drives the rotatory swing of flexible mirror tube, swiftly finds tertiary tracheal entry, continues to rotate toggle wheel 53 and makes the lower extreme of flexible mirror tube reach tertiary trachea department, adjusts the magnetic force of flexible mirror tube 30 between 3 ~ 5N through adjusting power adjustment button, makes the foreign matter adsorb on flexible mirror tube 30, dials out two-stage bronchoscope, takes off the foreign matter.

The foregoing is only a preferred embodiment of the present invention, and it should be noted that those skilled in the art can make various improvements and modifications without departing from the principle of the present invention, and the improvements and modifications are also within the protection scope of the present invention.