CN215874584U

CN215874584U - Disposable hard mirror for trachea or bronchus with adjustable tube diameter and operation system thereof

Info

Publication number: CN215874584U
Application number: CN202121858947.8U
Authority: CN
Inventors: 谢丽华; 金婷
Original assignee: Third Xiangya Hospital of Central South University
Current assignee: Third Xiangya Hospital of Central South University
Priority date: 2021-08-10
Filing date: 2021-08-10
Publication date: 2022-02-22
Anticipated expiration: 2031-08-10

Abstract

The utility model discloses a disposable hard endoscope with an adjustable tracheal or bronchial diameter and an operating system thereof, wherein the hard endoscope comprises an adjusting rod and a tubular endoscope sheath; the outer wall of the endoscope sheath is sleeved with a thin film, and the adjusting rod penetrates through the endoscope sheath; the proximal end part of the sheath is a complete round tube, and the tube wall of the distal end part of the sheath is provided with a spiral notch; the adjusting rod is provided with a near-end fixed end and a far-end fixed end, the near-end fixed end is fixed with the near ends of the endoscope sheath and the film, and the far-end fixed end is fixed with the far ends of the endoscope sheath and the film. The hard mirror can be made of disposable materials, can be contracted or expanded according to needs, is matched with a thin film to protect an air passage, and is low in cost and convenient to use.

Description

Disposable hard mirror for trachea or bronchus with adjustable tube diameter and operation system thereof

Technical Field

The utility model relates to a disposable tracheal or bronchoscope operation system with adjustable caliber and an operation method thereof, relating to the field of medical endoscopes.

Background

The endoscope enters the human body through a natural pore canal of the human body or a small incision made by operation, and can directly peep the change of the relevant part. Bronchoscopes are used for directly observing pathological changes of bronchoscopes through nose, oral cavity, throat and artificial airways after being inserted into trachea and bronchus, and are an important means for diagnosing and treating respiratory system diseases. The hard bronchoscope (hard scope) is a main surgical instrument for clinical airway tumor ablation, tracheal stent, particularly silicone stent implantation, tracheal foreign body extraction and other treatments, can keep an airway smooth in patients with severe airway stenosis and high bleeding risk, is provided with a side hole at an operation end and is connected with a respirator, and is also called as a 'ventilation bronchoscope'.

The clinical application of the hard bronchoscope has been for over 100 years, the modern hard bronchoscope is a hollow stainless steel tube, the tube diameter is uniform, the hard bronchoscope has different models, the far end is an inclined surface, so that the hard bronchoscope can pass through a glottis and a narrow area of an airway, meanwhile, the hard bronchoscope is beneficial to shoveling and removing tumors on the wall of the airway, and a side hole is formed in the tube wall of the 1/3 endoscope body, so that the endoscope body can keep ventilation for the airway when entering a main bronchus on one side. The operation end is provided with a plurality of interfaces, including a breathing machine interface, a light source interface, a suction tube and a laser fiber interface. The bronchofiberscope and other devices can be allowed to enter a lumen, and after the bronchofiberscope enters, stent release, balloon expansion, freezing, laser treatment and other operations can be performed under direct vision, so that the bronchofiberscope is one of very important tools in interventional respiratory pathology.

In recent 40 years, the use of rigid bronchoscopes has been significantly reduced as flexible fiberbronchoscopes have become widely used clinically. Compared with a hard endoscope, the fiber bronchoscope is easy to operate, can be operated under local anesthesia, occupies less airway space in the operation process, generally does not cause ventilation dysfunction for healthy adults, but can influence the ventilation function of people with serious airway stenosis and even threatens life safety. And some endoscopic interventions such as silicone stent implantation, airway tumor endoscopic treatments, etc. are difficult to develop or have high risk under a fiberbronchoscope.

The modern value of the hard endoscope is that the hard endoscope is used as an interventional channel to allow the bronchofiberscope and other instruments to enter an airway, the bronchofiberscope is observed and positioned through an ocular lens of the bronchofiberscope, and operations such as stent release, laser ablation, foreign body taking, freezing, electrostomy and the like are performed under direct vision to keep the airway ventilated. The development of modern interventional airway diagnosis and treatment technology brings new lives to rigid bronchoscopes, which are ancient technologies and will start new historical processes.

Modern hard scopes are hollow stainless steel tubes with a wall thickness of 2mm, similar to those designed by Jackson physicians 100 years ago. The adult hard glasses have different models, the diameter is 8-14mm mostly, and the length is 33-43 cm. The hard lens has a plurality of interfaces at its operating end, and the open proximal end can be closed or opened to facilitate passage of viewing eyepieces and other equipment. The length of the observation ocular is 50cm, the outer diameter is 4.5mm, and the observation ocular can be used for peeping examination through a hard lens tube cavity after being connected with a light source.

The light guide system of modern hard mirrors is a far-end illumination that is guided and reflected by the tube wall, thus providing a clearer view for the operator to see directly through the lumen to the throat and even the airway for facilitating intubation, aspiration and treatment of foreign bodies. But the best field of view is obtained through hard glasses with a viewing eyepiece. The observation ocular greatly improves the utilization of the light source and the definition of the visual field, and meanwhile, the ocular can also be connected to a television system to facilitate collective observation and video recording. Other facilities such as biopsy forceps and suction tubes can also work through the scope body.

The observation eyepiece can be replaced by a fiber bronchoscope (soft lens), but when the operation of the soft lens which is easy to damage such as laser ablation is carried out, an optical lens which is hard and straight and is not easy to damage by laser is preferably used.

The patient is prepared. The practice of hard-scoping is usually dominated by general anesthesia, necessitating standard preoperative and anesthetic assessments. The anesthesiologist should talk to the patient before the operation to inform about technical points and risk of anesthesia. The relevant examination was selected according to the patient's general condition, age, current medical history and hospital requirements, and the degree of activity of the mouth, teeth, jaw and neck was carefully examined.

The hard mirror operation requires a standard procedure of connecting general anesthesia to a breathing machine, and also needs to be matched with muscle relaxants and local anesthesia medicaments such as lidocaine and the like for local anesthesia and sedation in an airway.

The side holes through the hard mirror can provide a high flow of air or oxygen to the patient, and thus, a variety of ventilation options are available to the operator.

There are several methods of insertion of the scope, which are selected primarily based on the experience of the operator, the condition of the patient, and the requirements of the anesthesiologist. The patient lies on the operating table after preoperative medication and sufficient oxygen supply, is numb and protects the bite block and eyes, and the method comprises the following steps:

1. the traditional method comprises the following steps: lubricating a hard lens body with paraffin oil, holding the proximal end of the lens by an operator at the right side, placing a left thumb and a forefinger between a lower jaw and upper and lower teeth respectively to protect teeth and open the upper and lower palate, enabling an inclined plane at the tail end of the lens body to face the operator, vertically enabling the lens body to enter an oral cavity, pressing the proximal end of the hard lens by the right hand after seeing a uvula, enabling the root of a tongue to be slowly lifted by the distal end of the lens body to expose an epiglottis, picking up the epiglottis by the inclined plane of the hard lens to see a glottic opening, rotating the lens body by 90 degrees and slowly pushing the lens body through the glottis; after entering the trachea, the body of the bronchoscope is rotated by 90 degrees to keep the inclined plane in place, and the bronchoscope is pushed to a deeper airway by a left finger in a rotary pushing mode. After entering the airway, mechanical ventilation is usually performed by a ventilator to keep the patient in a general anesthesia state with sufficient oxygen. Then, the left and right main bronchus are observed further, if the patient needs to enter the right main bronchus, the head of the patient is turned to the left, the hard endoscope body is slowly rotated to be pushed through the carina, and the distal end of the endoscope can be pushed into the middle bronchus under most conditions; if entering the left main bronchus, the patient's head turns to the right and upper and lower lobar bronchus are observed in most cases. The removal of the hard mirror after the operation is completed is also performed in a direct-view, rotating movement. Most patients recover within 10-20 minutes of discontinuing intravenous anesthetic administration. After which the vital signs are observed for several hours (depending on the patient), the effect of the anesthetic to be administered is completely abolished. According to the conditions and experiences of our hospital, the observation time is at least 2 hours.

2. Direct laryngoscope guiding method: holding the laryngoscope by the left hand of an operator, and lifting the tongue root and slightly carrying the epiglottis by using a pressing plate of the laryngoscope when the epiglottis is observed; the rigid mirror is operated by the right hand, so that the tip of the mirror body passes through the epiglottis at the lower part of the epiglottis. At this point, the operator turns to look through the hard lens and inserts the lens body deep into the glottis while removing the laryngoscope. The subsequent operation is the same as the conventional method.

The advantages of modern hard mirrors:

1) the hard mirror has a plurality of working channels, can carry out multiple operation simultaneously, is convenient for keep the field of vision clean, does benefit to and observes the operation process.

2) The scope has a larger channel, allowing larger biopsy forceps to clamp out necrotic tissue through the scope.

3) Hard lenses are less susceptible to laser damage than bronchofiberscopes.

4) The rigid mirror maintains a certain gas passage during the treatment process, providing a larger viewing field for the operator.

Based on the advantages, the treatment such as laser treatment by using the hard mirror is efficient and safe, and is obviously superior to the single-use bronchofiberscope.

The disadvantages of modern hard mirrors:

1) the hollow stainless steel tube sheath is made of hard materials, has thick tube diameter and is difficult to insert. And the vocal cords and tissues of the narrow parts of the oral cavity and the air passage are easily damaged in the inserting and operating processes.

2) The tube diameter is uniformly fixed and can not be adjusted, in the operation, the supporting endoscope sheaths with different tube diameters are used according to the size of an air passage and the requirement of the operation, the material consumption is wasted, the patient inserts for many times, and the local tissue is damaged.

3) Although the tube diameters of the endoscope sheaths have different specifications and can be recycled, the complicated and time-consuming disinfection and sterilization as well as the aging of instruments caused by repeated use and disinfection can not be avoided.

4) The requirement for anesthesia is high, and deep anesthesia and muscle relaxant are required to be matched.

Chinese utility model patent publication No. CN208319182U discloses a stereoplasm bronchoscope, chinese utility model patent publication No. CN208573713U discloses a stereoplasm bronchoscope with expanding pipe in the air flue, and two patents all adopt expanding pipe in the air flue to realize guiding the stereoplasm bronchoscope and put into, but this kind of double-layer tube structure cost is on the high side, and the main function is that the guide is put into, all the other structures are with traditional stereoplasm bronchoscope.

SUMMERY OF THE UTILITY MODEL

The utility model aims to provide a disposable hard endoscope for a trachea or a bronchus with adjustable tube diameter and an operation system thereof.

In order to achieve the purpose, the utility model adopts the technical scheme that:

the disposable hard bronchoscope with adjustable tube diameter is characterized by comprising an adjusting rod and a tubular sheath;

the outer wall of the endoscope sheath is sleeved with a thin film, and the adjusting rod penetrates through the endoscope sheath;

the proximal end part of the sheath is a complete round tube, and the tube wall of the distal end part of the sheath is provided with a spiral notch;

the adjusting rod is provided with a near-end fixed end (detachable) and a far-end fixed end, the near-end fixed end is fixed with the near ends of the endoscope sheath and the film, and the far-end fixed end is fixed with the far ends of the endoscope sheath and the film. The spiral notch of the tube wall of the sheath is round and blunt, and the fixed end of the far end is round and blunt.

Therefore, when the near end of the adjusting rod is not fixed, an operator can separately hold the far end and the near end of the sheath with both hands, the diameter of the far end part of the sheath is adjusted by rotating, the sheath is contracted to about 7.5mm before being inserted into an air passage, the near end part of the adjusting rod is fixed to maintain the pipe diameter of the sheath unchanged, the air passage is arranged under the guidance of an eyepiece, the near end fixing of the adjusting rod is released after the near end part of the sheath is positioned at an operation position, the far end part of the sheath is automatically expanded, the operator holds the near end tubular sheath with one hand and holds the near end part of the adjusting rod with the other hand, the near end part of the sheath fixed with the far end part of the adjusting rod is driven to rotate by continuously rotating the near end part of the adjusting rod clockwise or anticlockwise under the visual field of the eyepiece, the pipe diameter and the position of the sheath are adjusted, the near end part of the adjusting rod is completely attached to the air passage, and the adjusting rod is fixed again after adjustment. The final pipe diameter can be matched with different air passage changes, and the maximum pipe diameter can be larger than or equal to the initial pipe diameter. The endoscope sheath can support a narrow air passage, enlarge the operation space and is easy to place, and meanwhile, the film is matched to perfect the integrity of the endoscope sheath pipeline, so that the damage to vocal cords, oral cavities and air passages is reduced, the operation is convenient, and the use is reliable.

According to the embodiment of the utility model, the utility model can be further optimized, and the following is the technical scheme formed after optimization:

the fixed end of the proximal end of the adjusting rod is fixed with the proximal ends of the sheath and the film in order to be convenient and detachable. The tube wall of the opening at the near end of the sheath is thickened, a fixed insertion hole is formed in the opening end face, and the near end of the adjusting rod is provided with a bending part matched with the fixed insertion hole.

In one preferred embodiment, the membrane is provided with a side hole near the distal end.

In one preferred embodiment, the tube wall of the sheath is less than 2mm, the diameter is about 10-13mm, and the tube diameter is 13-15 mm.

In one preferred embodiment, the adjusting rod is a cemented carbide rod or a polyethylene rod, and/or the sheath is a hollow polyethylene tube.

In one preferred embodiment, the membrane is a flexible membrane. The material may be polyethylene or other film with tensile properties.

Based on the same inventive concept, the utility model also provides a disposable tracheal or bronchoscope operation system with adjustable caliber, which comprises an operation end and the disposable tracheal or bronchoscope with adjustable caliber; the sheath of the disposable tracheal or bronchial hard scope with adjustable caliber is communicated with the operation end through a connector.

In one preferred embodiment, the connector is threaded between the top end and the operating end, and the sheath is threaded between the proximal end and the bottom end.

In order to prevent the bending part of the adjusting rod from falling off from the fixed insertion hole, the inner wall surface of the connector is provided with a baffle. More preferably, the baffle is a raised annular baffle.

In one preferred embodiment, the operation end is provided with an air vent, a suction port, an ocular port and an operation port; and the suction port, the ocular port and the operation port are respectively provided with a sealing plug, and each sealing plug is connected to the lantern ring.

Compared with the prior art, the utility model has the beneficial effects that:

1) the sheath is disposable collapsible/expansion sheath, for example polyethylene material, and the material is hard, but has polyethylene flexible membrane parcel, and the pipe diameter is collapsible before inserting, and the material is disposable, and the consumptive material is cheap. The sheath can support the narrow air passage, enlarge the operation space, and reduce the damage to the vocal cords, the oral cavity and the air passage by matching with the film. The diameter of the whole endoscope sheath can be reduced before insertion, and the endoscope sheath is easy to insert.

2) After the endoscope sheath is inserted, the diameter of the endoscope sheath can be automatically expanded to fit different diameters of the air passage, the diameter of the endoscope sheath can be expanded to the maximum diameter of the air passage, the air passage is fully expanded, the endoscope sheath is completely attached to the air passage, and air leakage is reduced. Therefore, the endoscope sheath which is not necessarily completely matched with the maximum diameter of the airway does not need to be selected according to the size of the far-end airway at the operation position like the prior art, and the endoscope sheath can be matched with the size of the airway as much as possible to expand the airway. After the insertion, the stent is expanded, the spiral notch is round and blunt, and meanwhile, the membrane is protected, so that the damage and stimulation to tissues are obviously reduced.

3) The disposable disinfection bottle is disposable, low in material consumption, convenient to use and free of complex disinfection and repeated use.

4) The hard mirror operating system provided by the utility model has a plurality of working channels, and can perform various operations simultaneously. Each channel opening is provided with a sealing plug for preventing air leakage, each sealing plug is connected to the lantern ring, and the lantern ring can be sleeved in from the suction opening, so that the sealing plugs can be conveniently sealed or pulled out at any time. Meanwhile, a larger channel is arranged, so that the requirements of different interventional operations are met.

5) In the treatment process, the ventilation can be assisted through the breathing machine, and the safety of the patient in the operation is guaranteed.

Drawings

FIG. 1 is a schematic block diagram of one embodiment of the present invention;

FIG. 2 is a schematic structural view of the operation end of FIG. 1, wherein a) is a front view; b) is a first perspective view body surface diagram; c) is a second perspective elevation;

FIG. 3 is a schematic view of the closure;

FIG. 4 is a schematic view of the lower-middle fit of FIG. 1;

FIG. 5 is a left side view of FIG. 4;

FIG. 6 is an enlarged view of the distal end portion of the sheath;

FIG. 7 is a schematic view of the sheath retracted;

FIG. 8 is a schematic view of an adjustment lever;

FIG. 9 is an enlarged view of the connection of the connector to the sheath;

FIG. 10 is an enlarged view of the proximal end of the sheath;

fig. 11 is a perspective view of the connection between the connector and the sheath.

In the figure

1-an operation end; 11-an operation port; 12-a vent; 13-a suction port; 14-a first internal thread; 15-a second external thread; 111-an operation port; 112-ocular port; 113-operation port closing plug; 114-ocular port closure; 115-suction port closing plug; 116-a connecting strap; 117-collar;

2-a connector; 21-a baffle plate; 22-a first external thread; 23-a second internal thread;

3-sheath of the endoscope; 31-a fixed jack; 32-a film; 34-a helical notch; 36-a third external thread;

4-adjusting the rod; 41-a proximal fixation end; 42-distal fixed end.

Detailed Description

The present invention will be described in detail below with reference to the embodiments with reference to the attached drawings. It should be noted that the embodiments and features of the embodiments may be combined with each other without conflict. For convenience of description, the words "upper", "lower", "left" and "right" in the following description are used only to indicate the correspondence between the upper, lower, left and right directions of the drawings themselves, and do not limit the structure.

A disposable hard bronchoscope operating system with adjustable tube diameter mainly comprises a scope body (supporting a scope sheath 3), an operating end 1 and an observation eyepiece.

(A) apparatus

The supporting sheath 3 is a hollow polyethylene tube, the thickness of the wall of the polyethylene tube is as thin as possible (preferably <2mm) on the premise of supporting the airway. The far end of the pipe wall of the polyethylene pipe is spirally defected, namely, the far end is provided with a spiral notch 34, the thread pitches of the spiral notch 34 are equal, so that the stress is uniform during rotation, and the near end of the polyethylene pipe is a complete pipe wall with the pipe diameter of 13-15 mm. The operator holds the far and near ends of the endoscope sheath by two hands or holds the near-end tubular endoscope sheath by one hand, holds the near-end of the adjusting rod by one hand, shrinks/expands the pipe diameter by clockwise or anticlockwise rotation, the pipe diameter of the endoscope sheath 3 can be changed within a certain range, the minimum can meet the passing of eyepieces of various specifications, the maximum diameter of the air passage can be 13-15mm, the air passage is fully expanded, and the treatment requirement is met. After the endoscope sheath 3 is inserted, the glottis is positioned at the complete tube wall at the near end, and the spiral defective tube wall with adjustable tube diameter is arranged below the glottis. The supporting sheath 3 with proper length can be selected according to the distance between the operation position and the glottis.

The most far end of the inner wall of the sheath 3 is closely connected with a flat arc-shaped slender rigid adjusting rod 4 made of polyethylene or alloy. The adjusting rod 4 penetrates through the whole endoscope sheath 3 and is used for adjusting the pipe diameter of the spiral notch endoscope sheath. After the adjustment is finished, the fixing insertion hole can be fixed at the opening of the near end of the sheath 3 so as to maintain the shape and the pipe diameter of the sheath. Before inserting, adjust the sheath 3 rotation to required minimum pipe diameter (can hold the eyepiece and pass through), make things convenient for sheath 3 to insert. When the endoscope sheath is inserted to an operation position, the fixing of the near-end adjusting rod 4 is released, the distal end part of the endoscope sheath 3 automatically expands, an operator holds the near-end tubular endoscope sheath with one hand and holds the near end of the adjusting rod with the other hand, under the visual field of an ocular lens, the near end of the adjusting rod is rotated to drive the distal end of the endoscope sheath fixed with the distal end part of the adjusting rod to rotate, so that the tube diameter is expanded or contracted, the tube diameter and the position of the endoscope sheath are further adjusted, the near end part of the adjusting rod is fixed again after the adjustment, and the shape and the tube diameter of the endoscope sheath after the adjustment are maintained. The final pipe diameter can be matched with different air passage changes, and the maximum pipe diameter can be larger than or equal to the initial pipe diameter of 13-15 mm. Thereby supporting the air passage and enlarging the operation space.

The outer wall of the sheath 3 is completely wrapped with a polyethylene film 32, and the polyethylene film 32 is arranged from the upper part to the opening thread at the near end of the tube wall and from the lower part to the farthest end of the tube wall. The membrane 32 serves to protect the airway and vocal cord tissue and maintain sheath integrity. The thin film 32 is fixed at the far and near ends of the sheath tube and is adjusted along with the rotation of the adjusting rod 4 and the sheath 3. The wall film of the distal 1/3 endoscope body is provided with a side hole, which is convenient for keeping ventilation with the contralateral airway when the endoscope body enters into the main bronchus at one side.

The operation end 1 is made of hard polyethylene material and has a plurality of interfaces, the operation port 11 comprises an air vent 12, a suction port 13, an eyepiece port 112, an operation port 111 and the like, and sealing plugs are respectively arranged outside the air vent and can be made of disposable polyethylene or rubber and the like. Each closing plug is connected to the lantern ring 117 through a polyethylene bendable strip, so that each passage opening can be conveniently closed by the closing plug when no instrument is inserted, for example, the operation opening closing plug 113 is inserted into the operation opening 111 as required, the ocular opening closing plug 114 is inserted into the ocular opening 112 as required, the suction opening closing plug 115 is inserted into the suction opening 13 as required, and each closing plug is connected with the lantern ring 117 through a connecting belt 116. The material of each closing plug can be rubber or polyethylene material. The connecting band 116 is preferably made of polyethylene strip to facilitate bending. The lantern ring 117 can be sleeved on the suction port 13 at any time, and the sealing plugs can be conveniently used at any time. A second external thread 15 is provided at the interface of the vent 12.

The endoscope sheath 3 is connected with the operation end 1 through the connector 2, threads are respectively arranged at the upper end and the lower end of the connector 2, a first external thread 22 is arranged at the upper end part, a second internal thread 23 is arranged at the lower end part, an annular baffle plate 21 is arranged in the middle of the connector 2, the width of the baffle plate 21 is equal to the thickness of a tube wall at the opening of the near end of the endoscope sheath 3, and the adjustment rod 4 is prevented from slipping from the fixed insertion hole 31 in the operation process (specifically shown in the figure).

The observation ocular lens can be a bendable bronchoscope (a fiber bronchoscope or an electronic bronchoscope) with various specifications. When laser treatment is carried out, a rigid optical lens can be selected to prevent the soft lens from being damaged. But at the same time, attention is paid to the damage of the polyethylene lens sheath 3 by laser light and the like and the damage of the optical lens by pressing is prevented.

(II) patient preparation

As with conventional hard-mirror procedures, which are usually dominated by general anesthesia, standard preoperative and anesthetic assessments are necessary. The anesthesiologist should talk to the patient before the operation to inform about technical points and risk of anesthesia. The relevant examination was selected according to the patient's general condition, age, current medical history and hospital requirements, and the degree of activity of the mouth, teeth, jaw and neck was carefully examined.

(III) anesthesia

Similar to the traditional hard mirror operation, the standard procedure of connecting general anesthesia with a breathing machine is required, and muscle relaxants and local anesthetic drugs such as lidocaine and the like are also used for local anesthesia and sedative in the air passage.

(IV) aeration

The high-frequency ventilation or breathing machine is connected with the ventilation port of the operation end, so that a plurality of ventilation modes can be selected by an operator.

(V) operation

The insertion method is various and is selected mainly according to the experience of the operator, the condition of the patient and the requirements of the anesthesiologist. The patient lies on the operating table after preoperative medication and sufficient oxygen supply, is numb and protects the bite block and eyes, and the method comprises the following steps:

1. preparation before insertion: when the endoscope body is in a state 1 (shown in figure 1), the ocular lens sequentially passes through the connector 2 and the endoscope sheath 3, the adjusting rod 4 and the endoscope sheath 3 are rotated at the near end, after the tube wall is contracted to the size of the ocular lens, the near end of the adjusting rod 4 is inserted into the fixed insertion hole, the endoscope sheath 3 and the connector 2 are connected, and the adjusting rod 4 is fixed and rotated to the position of the baffle plate through threads. The mirror now assumes state 2 (shown in fig. 7). The respirator and the operation end vent are connected in advance.

2. Inserting: conventional methods of arthroscopic insertion or direct laryngoscope guidance. The airway is inserted through the mouth, glottis, under the guidance of the ocular view.

3. After insertion: after reaching the surgical site, the connector 2 is released, the fixing of the adjustment lever 4 is released, the sheath 3 in the state 2 (shown in fig. 1) (shown in fig. 7) automatically returns to the state 1 (shown in fig. 7), and the sheath 3 is further fitted to the size of the airway by manually rotating the adjustment lever 4 in the eyepiece visual field. The diameter of the far-end air passage is small, after the endoscope sheath 3 is expanded to the maximum diameter of the small air passage, the rotating adjusting rod 4 does not further expand the far-end endoscope sheath 3, the expansion force generated by the rotating adjusting rod 4 is continuously transmitted to the near end, and the diameter of the endoscope sheath 3 is continuously expanded to the maximum diameter of the large air passage to the near end. Therefore, the diameter of the expanded endoscope sheath 3 at the far-end small airway is approximate to the diameter of the small airway, and the diameter of the expanded endoscope sheath at the near-end larger airway is approximate to the diameter of the large airway. Finally, the maximum expansion of the air passage is realized, the shape of the sheath is maintained through the adjusting rods 4 fixed at the two ends, the air passage is supported, and the ventilation and operation space is maintained.

After the sheath 3 is adjusted, the near end of the adjusting rod 4 is inserted into the fixed insertion hole 31 again, the connector 2 is connected, and then the ocular lens is pulled out. The operation end 1 is immediately connected with the sheath 3 through the connector 2, and airway ventilation is established. Then, the ocular is inserted again through the ocular opening of the operation end 1, and the subsequent operation is continued.

4. After the operation is finished: under the direct vision of the ocular lens, the endoscope sheath 3, the connector 2 and the operation end 1 on the connector are unscrewed, the fixing of the adjusting rod 4 is released, an operator holds the endoscope sheath 3 by one hand, holds the near end part of the adjusting rod 4 by one hand, and drives the endoscope sheath 3 fixed with the far end part of the adjusting rod to rotate by rotating the near end of the adjusting rod, so that the endoscope sheath 3 is continuously rotated and contracted from far to near, and after the endoscope sheath 3 is contracted, the adjusting rod 4 is fixed and slowly rotated and moved to exit the air passage. Most patients recover within 10-20 minutes of discontinuing intravenous anesthetic administration. After which the vital signs are observed for several hours (depending on the patient), the effect of the anesthetic to be administered is completely abolished.

It should be noted that the main material used in this embodiment is polyethylene, and mainly in consideration of cost and feasibility thereof, the rigid polyethylene material and the stretchable polyethylene film 32 can satisfy the requirements of the facilities according to the present invention. Other chemical materials, such as those described for the apparatus of the present invention, may also be used.

In the embodiment, the spiral defect pipe wall is rotated and fixed by using a rigid adjusting rod and a connector baffle plate, and the spiral defect pipe wall can be rotated and adjusted by adopting other modes to fix the pipe diameter.

The present embodiment relates to a polyethylene rod of the rotating sheath 3, which is tightly connected to the distal end of the sheath 3, and the material of the rod is replaced by other chemical materials with stronger hardness, weaker brittleness and stronger toughness, such as alloy. If the consumable is more expensive, can design for adjusting the pole distal end and can dismantle, "a pole multitube", retrieve the cyclic utilization regulation pole.

The above-described embodiments are set forth so that this disclosure will be thorough and complete, and will not be limited by any theory presented in the preceding claims, which may suggest themselves to those skilled in the art after reading this disclosure and all equivalents thereof that fall within the scope of the utility model as defined in the claims appended hereto.

Claims

1. The disposable hard bronchoscope with adjustable tube diameter is characterized by comprising an adjusting rod (4) and a tubular endoscope sheath (3);

the outer wall of the endoscope sheath (3) is sleeved with a thin film (32), and the adjusting rod (4) penetrates through the endoscope sheath (3);

the proximal end part of the endoscope sheath (3) is a complete round tube, and the tube wall of the distal end part of the endoscope sheath (3) is provided with a spiral notch (34);

the adjusting rod (4) is provided with a near-end fixed end (41) and a far-end fixed end (42), the near-end fixed end (41) is fixed with the near ends of the endoscope sheath (3) and the film (32), and the far-end fixed end (42) is fixed with the far ends of the endoscope sheath (3) and the film (32).

2. A disposable hard bronchoscope or trachea with adjustable tube diameter according to claim 1, wherein the proximal end face of the sheath (3) is provided with a fixed insertion hole (31), and the proximal end of the adjusting rod (4) is provided with a bending part matched with the fixed insertion hole (31).

3. A disposable tracheostomy or bronchoscope according to claim 1 or 2, characterized in that the membrane (32) is provided with a side hole near the distal end.

4. A disposable rigid bronchoscope or tracheal tube with adjustable tube diameter according to claim 1 or 2, characterized in that the tube wall of the sheath (3) is less than 2 mm.

5. A disposable rigid bronchoscope or trachea according to claim 1 or 2 characterized in that said adjusting rod (4) is a carbide rod or a polyethylene rod and/or said sheath (3) is a hollow polyethylene tube.

6. A disposable tracheal or bronchoscope manipulation system with adjustable tube diameter, comprising a manipulation end (1) and a disposable tracheal or bronchoscope with adjustable tube diameter according to any one of claims 1-5; the endoscope sheath (3) of the disposable tracheal or bronchial hard endoscope with adjustable tube diameter is communicated with the operation end (1) through the connector (2).

7. A disposable caliber adjustable tracheal or bronchoscope manipulation system as claimed in claim 6, wherein the top end of the connector (2) is in threaded connection with the manipulation end (1), and the proximal end of the sheath (3) is in threaded connection with the bottom end of the connector (2).

8. A disposable caliber adjustable tracheal or bronchoscope manipulation system as claimed in claim 6, wherein the inner wall surface of the connector (2) is provided with a baffle (21).

9. A disposable caliber adjustable tracheal or bronchoscope manipulation system as claimed in claim 8, wherein said baffle (21) is a convex annular baffle.

10. A disposable caliber adjustable tracheal or bronchoscope manipulation system as claimed in any one of claims 7 to 9, wherein the manipulation end (1) is provided with a ventilation port (12), a suction port (13), an ocular port (112) and a manipulation port (111); and the suction port (13), the ocular port (112) and the operation port (111) are respectively provided with a sealing plug, and each sealing plug is connected to the lantern ring (117).