WO2019153945A1

WO2019153945A1 - Improved visual trachea cannula

Info

Publication number: WO2019153945A1
Application number: PCT/CN2018/124675
Authority: WO
Inventors: 左明章; 薛富善; 王卫东; 李宏博; 张升炎; 朱福斌; 李芳柄
Original assignee: 浙江优亿医疗器械有限公司
Priority date: 2018-02-07
Filing date: 2018-12-28
Publication date: 2019-08-15
Also published as: CN208678114U

Abstract

A visual trachea cannula, comprising a cannula body and a cuff (4). The cannula body comprises a flexible patient end (1), a machine end (3), and a cannula cavity (2) extending from the patient end (1) to the machine end (3). The cuff (4) is disposed at the flexible patient end (1) and connected to an inflating device; the cannula body is provided with a bevel opening (8); the inner wall of the cannula body extending along the proximal end of the bevel opening (8) is provided with an accommodating cavity (11) and a flushing channel (13); the opening end of the accommodating cavity (11) is flush with the proximal end of the bevel opening (8); the flushing channel (13) is adjacent to and separated from the accommodating cavity (11); a camera (12) is built in the accommodating cavity (11); the camera (12) is retracted inwardly with respect to the proximal end of the bevel opening (8); and the flushing channel (13) is provided with a flushing hole (14) that faces towards the camera (12) and communicated with the accommodating cavity (11). The flexible advantage of the flexible patient end (1) is reserved, and the visual effect is achieved. In addition, the effect of cleaning the camera (12) is remarkable.

Description

An improved visual endotracheal intubation

Technical field

The invention belongs to the technical field of medical instruments, and in particular relates to an improved visual endotracheal tube.

Background technique

Endotracheal intubation is an important method often used in general anesthesia or cardiopulmonary resuscitation and emergency treatment of critically ill patients with respiratory dysfunction. The key is how to improve and facilitate rapid and direct oral intubation and The success rate of difficult airway intubation, the common type of tracheal intubation requires the use of medical instruments such as intubation rods or laryngoscopes. This type of intubation is complicated, time consuming, and increases the workload of the physician; The laryngoscope and the light bar have great damage to the human body, and can not achieve the visual effect. The visual laryngoscope can only observe the position of the oral cavity and the glottis, and can not fully achieve the visual effect, and the operation is time-consuming and costly; therefore, providing A visual endotracheal intubation that is precise, fast, safe and effective, has minimal tissue damage, and provides full-process dynamic video monitoring is essential.

CN205683368U discloses a visible tracheal intubation, which is provided with a camera on the front end surface of the curved tube body. At present, a cannula guide made of a soft material is generally used in medical treatment to avoid trauma to the patient during the intubation process, but The setting of the camera on the front end face makes the socket hard, weakens or even eliminates the advantage of the soft socket, and is difficult to implement. At the same time, the secretion of the mouth and the esophagus in the intubation process inevitably pollutes the camera, making it difficult to achieve visual effects.

Summary of the invention

In order to solve the above problems, it is an object of the present invention to provide an improved visual endotracheal tube comprising a tubular body and a cuff, the tubular body comprising a flexible patient end, a machine end and extending from the patient end to the machine end a lumen, the cuff is disposed at the flexible patient end, and is connected with an inflation device, the tube body has a slanted opening, and the inner wall of the tube extending along the proximal end of the oblique opening is provided with a accommodating cavity and a rinsing channel. The open end of the cavity is flush with the proximal end of the oblique opening, and the flushing channel is adjacent to and spaced apart from the receiving cavity, the receiving cavity is provided with an imaging device, and the imaging device is indented inwardly with respect to the proximal end of the oblique opening The flushing passage is provided with a flushing hole facing the image capturing device and communicating with the receiving cavity. The flexible patient end is combined with the camera to preserve the softness of the patient's end while ensuring a clear view of the camera during the procedure.

Preferably, the imaging device is a camera, and the camera is fixed in the accommodating cavity and is 1 to 2 mm from the proximal end of the oblique opening.

Preferably, the flushing channel is bent 30° to 90° toward the imaging device at a position close to the oblique opening to form a vertical or inclined flushing hole for flushing the image pickup device, the flushing hole being substantially aligned with the image capturing device.

Preferably, the inner wall of the cannula is fixed with a support spring.

Preferably, the accommodating cavity and the rinsing channel are laterally separated by a distance of 1-2 mm on the inner wall of the tube; further, the rinsing channel is bent 50 to 75 degrees toward the camera device at a position close to the proximal end of the oblique opening, A slanted flushing hole is formed toward the image pickup device.

Preferably, the intersection of the open end of the receiving cavity and the proximal end of the oblique opening smoothly transitions to form an oblique opening having an elliptical contour.

Preferably, the image pickup apparatus further includes a wire harness connected to the camera, the wire harness portion penetrating through the lumen, the USB connector connected to the tail of the wire harness; and the camera mounted with the LED lamp.

Preferably, the flushing passage is connected to the outside of the tubular body with an irrigation pipe and an flushing joint.

Preferably, the end wall of the patient end is provided with a Murphy hole, and the machine end of the cannula is provided with a joint.

Another object of the present invention is to provide a visual endotracheal intubation system and display device that transmits imaging to a display device via a bundle of wires.

Compared with the prior art, the present invention has the following beneficial effects:

1. The tracheal intubation provided by the invention passes through the flexible patient end, and the insertion operation is simple and rapid, and the camera device is located on the inner wall of the tube, and is retracted a short distance relative to the proximal end of the oblique mouth, thereby retaining the flexible patient. At the same time, the softness of the end can achieve the optimal visual effect, reduce the difficulty of the intubation and the complexity of the operation, and do not need to be inserted into the laryngoscope to alleviate the patient's treatment pain.

2. Compared with the existing flushing device, A. The design of the inclined flushing hole is to completely rinse off the debris of the camera device with a small amount of liquid in time, and there is no residue; B. no additional flushing structure is added, only in The inner wall of the tube is cleverly designed and lightweight, which greatly reduces the suffering of patients during the treatment.

3. The whole body uses the supporting spring to avoid the tracheal intubation caused by the patient's bite during the operation or the operation of the doctor. Even if the tube body is greatly distorted, the normal operation can be guaranteed.

4. The oblique mouth of the cannula provided by the invention has an elliptical shape, and the insertion is light and labor-saving, thereby avoiding damage to human tissues.

5. The rinsing channel is separated from the accommodating cavity by 1-2mm. At this time, the rinsing liquid can be prevented from corroding the wire bundle connected to the camera, the stroke of the rinsing liquid can be reduced, the impulse of the rinsing liquid can be ensured, and the cleaning force is large.

6. Combined with the display device, the position of the glottis, epiglottis, esophagus, trachea and bronchus can be clearly observed during the clinical intubation process. The position and fixation effect of the intubation can be understood in real time by observing the video image. The efficiency and success rate of the cannula are improved; the intubation rod and the visual laryngoscope can be eliminated during the intubation process, which reduces the difficulty of the intubation and the complexity of the operation.

DRAWINGS

1 is a schematic structural view of an endotracheal tube provided by the present invention;

2 is a partial enlarged view of a patient end of an endotracheal intubation provided by the present invention;

Figure 3 is a cross-sectional view of the end of the tracheal intubation provided by the present invention;

4 is a transverse cross-sectional view of a tracheal intubation tube provided by the present invention.

Detailed ways

The invention will now be described in detail in conjunction with the drawings.

Example 1 Visual endotracheal intubation 1

As shown in Figures 1 and 3, a visual endotracheal tube includes a tubular body and a cuff, the tubular body including a flexible patient end 1, a machine end 3 and an extension from the patient end 1 to the machine end a lumen 2, the cuff 4 is disposed on the flexible patient end 1, the inner wall of the tube is provided with an inflation passage, and the inflation passage is connected with an inflation head outside the tube, and the socket of the cannula is an oblique opening 8 (inclined opening The oblique end has a proximal end 82 and a distal end 81, and an adjacent but non-connecting accommodating cavity 11 and a flushing channel 13 are formed along the inner wall of the tube extending toward the luminal head along the oblique proximal end 82. The shape of the body can be variously changed. For example, as shown in FIG. 1, the lumen 2 is curved, and the curved official cavity has an opposite outer peripheral region 9 and an inner peripheral region 10, and the receiving cavity and the flushing channel are both disposed. The peripheral region 9 of the lumen; for example, the lumen is also curved, but the accommodating chamber and the rinsing channel are both disposed in the peripheral region. For example, the shape of the lumen may be linear in some cases, such as a support spring. When the shape of the lumen is freely changed, the tube body provided by the present invention is applicable to a cannula of any shape. . However, it is important that the accommodating cavity 11 for placing the camera 12 extends from the proximal end 82 of the oblique opening, because the existing visual cannula has a accommodating cavity from the inner wall of the distally extending tube, so that Inevitably, the insertion head is hardened, and the "peripheral area", "inner circumference area" and "near end" and "outer end" described herein are not limited to one curved line or one nearest point. Rather, it is a broad definition, such as the near end, and the far end refers to a region, rather than a nearest or farthest point, as long as the object of the invention can be achieved, and should fall within the scope of the present invention. The terms "near" and "far" as used herein are intended to have a reference point relative to the user, "distal" means the position, direction or orientation generally away from the user, and the term "proximal" means generally oriented toward the user. Position, direction or pointing.

The accommodating cavity 11 is provided with a camera 12. In order to ensure the visualization of the camera 12, it is necessary to ensure that the accommodating cavity 11 is open, and the opening of the accommodating cavity is in the same direction as the opening of the slanting opening. As shown in FIG. 2, the accommodating cavity is along The proximal end 82 of the oblique opening extends, and the end face of the receiving cavity is flush with the proximal end of the oblique opening, which is also important, because if the opening of the receiving cavity of the camera is recessed a small distance together with the camera, during the insertion process The physiological tissue also touches the unsmooth part of the oblique opening, which is easy to cause trauma to the patient.

To achieve visualization, the distance between the camera and the proximal end of the accommodating cavity is not too large. It is found that when the camera 12 is inwardly retracted by 1 to 2 mm with respect to the open end of the accommodating cavity, the camera is relatively The proximal end of the oblique mouth is also contracted 1 to 2 mm inward, for example, 1 mm. Thus, in the process of performing the intubation, first, the rigid camera does not destroy the soft advantage of the oblique opening, and is not caused by the implantation of the camera. The defect that the guide head becomes hard has good clinical effect; secondly, the visualization effect is optimal. In addition, the size of the accommodating cavity is matched with the size of the camera. The mounting means may be various, including glue bonding on the side wall of the accommodating cavity, or by other means such as snapping or screwing. At the same time, the camera can be wrapped with transparent material to prevent the camera from directly contacting the human secretions; thus, the flexible characteristics of the flexible patient end are retained, and the defect of the patient end of the intubation caused by the existing visual imaging device is eliminated, and Achieve optimal visual effects.

As shown in FIG. 2, the open end surface of the accommodating cavity 11 is flush with the proximal end contour of the oblique opening, and is not convex or retracted; in addition, the open end of the accommodating cavity 110 and the proximal edge of the oblique opening 8 The smooth transition of the junction makes the socket of the visual cannula form an inclined opening 8 with an elliptical edge, which does not change the advantage of the soft oblique mouth, retains the flexible patient end, and the insertion process is light and labor-saving, convenient for the doctor to operate and relieve the patient's pain.

As shown in FIG. 1, the accommodating cavity further includes a wire bundle 17 connected to the camera, the wire bundle 17 partially penetrating the lumen 2, and the USB connector 18 connected to the tail of the wire harness to realize an image transfer function; The camera is equipped with a light source for illuminating the glottis or for convenient imaging. In an embodiment of the invention, the inner diameter of the accommodating cavity is less than 0.5 mm, the camera is a fixed focal length CMOS camera, and the light source is an LED light. . The patient end end side wall is provided with a Murphy's hole 19, and the machine end 3 of the cannula is provided with a joint 31.

Example 2 Visual endotracheal tube 2

This embodiment provides a function of keeping the camera clear at any time on the basis of Embodiment 1. As shown in FIG. 3, a cross-sectional view of the patient end is shown. In order to flush the camera at the end, the flushing channel 13 and the accommodating cavity 11 are preferably used. Adjacently, "adjacent" means that adjacent to the inner wall of the tube, adjacent but not connected, that is, they are spaced apart, in the embodiment provided by the present invention, the receiving chamber and the flushing channel are The lateral spacing of the inner wall of the inner circumference of the tube is 1-2 mm, and the flushing channel 13 is provided with a flushing hole 14 bent toward the camera 12 and communicating with the receiving cavity 11 at a position close to the proximal end of the oblique opening, and the flushing hole 14 is located in the flushing The end of the channel 13 is substantially flush with the camera 12, which is substantially flush to achieve a flushing effect. As shown in FIG. 1, when the flushing passage 13 extends to the upper middle portion of the tubular body, the flushing tube 15 and the flushing joint 16 are connected to the flushing passage outside the tubular body, and the flushing joint is used for connecting a flushing device such as a syringe; Avoid the corrosion of the wiring harness connected to the camera by the rinsing liquid, and reduce the stroke of the rinsing liquid, ensure the impulse of the rinsing liquid, and the cleaning force is large.

In addition, the inventors of the present invention optimized the rinsing hole, and after repeated screening tests, as shown in FIG. 3, the accommodating cavity 11 and the rinsing channel 13 extend along the inner wall of the luminal, and the rinsing channel 13 is near the slanting opening. The position of the end is bent 30° to 90° toward the camera; at this time, two kinds of flushing holes are formed, which are vertical and inclined flushing holes with respect to the camera. In an optimized embodiment of the present invention, as shown in FIG. 3, the lateral separation distance between the accommodating cavity 11 and the rinsing channel 13 is 1.5-1.6 mm, and the rinsing channel 13 is bent 50 near the oblique opening. A temperature of ~75° is directed to the camera 12 to form a slanted rinsing aperture 14 for rinsing the camera. At this time, the inclination of the flushing hole has the following obvious advantages compared with the flushing hole with other inclination or verticality: 1. The flushing force is the largest, and the debris of the camera is completely washed away with a small amount of liquid or gas, and will not There are residues; 2. The cleaning agent can be directly oriented toward the camera, and the debris of the camera can be washed away without any deviation. 3. No additional flushing structure is added, only the inner wall of the tube is cleverly designed, and the structure is light and extremely The earth reduces the suffering of patients during treatment.

Further, the inflator provided by the present invention may include an inflation passage, an inflation duct 5, an indication airbag 6, a single-phase valve 7, and the like, which belong to the prior art.

Example 3 Visual endotracheal tube 3

As shown in FIG. 4, the present embodiment combines the tracheal intubation provided in the first embodiment and the second embodiment, and simultaneously inserts a spring 20 around the inner wall of the inner wall 21 of the tracheal intubation to cooperate with the existing tracheal intubation to form a trachea with enhanced strength. Intubation can avoid the risk of gas passing through due to twisting or bending. It can also play a supporting role. On materials, relatively soft materials such as PVC and silica gel can be selected.

Example 4 Visual Endotracheal Intubation System

By connecting the USB connector of the visual endotracheal tube of Embodiment 1 or Embodiment 2 to the display device, the imaging can be transmitted to the display device to achieve a visual effect during the operation.

While the embodiments disclosed in the subject matter described herein have been described in detail and in the foregoing, in particular Many modifications, changes, and omissions are possible under the concept. Accordingly, the proper scope of the disclosed invention is intended to be

Claims

An improved visual endotracheal tube comprising a tubular body and a cuff (4), the tubular body comprising a flexible patient end (1), a machine end (3) and a patient end (1) to the machine The end (3) extends a lumen (2), the cuff (4) is disposed at the flexible patient end, and is coupled with an inflation device, wherein the tube has a slanted opening (8) along the oblique opening The inner wall of the tube extending from the end (82) is provided with a receiving cavity (11) and a flushing channel (13), and the open end (110) of the receiving cavity is flush with the proximal end of the oblique opening, and the flushing channel (13) Adjacent to and spaced apart from the accommodating cavity (11), the accommodating cavity (11) has a built-in imaging device, and the imaging device is retracted inwardly with respect to the proximal end of the oblique opening; the rinsing channel (13) is provided A rinsing hole (14) that faces the imaging device (12) and communicates with the accommodating chamber (11).
The improved visual endotracheal tube according to claim 1, wherein the camera device is a camera, the camera (12) is fixed in the accommodating cavity (11), and the distance is oblique (8) The proximal end (82) is 1 to 2 mm.
The improved visual endotracheal tube according to claim 1, wherein said irrigation channel (13) is bent 30 to 90 degrees toward the camera at a position close to the oblique opening (8) to form The vertical or oblique flushing holes of the camera are flushed, and the flushing holes (14) are substantially aligned with the camera (12).
The improved visual endotracheal tube of claim 1 wherein the inner wall (21) of the cannula is provided with a spring (20).
The improved visual endotracheal tube according to claim 3, wherein the accommodating cavity and the rinsing channel are laterally spaced apart from each other by a distance of 1-2 mm; preferably, the rinsing channel (13) ) is bent 50° to 75° toward the imaging device at a position close to the proximal end of the oblique opening to form a tilted flushing hole toward the imaging device.
The improved visual endotracheal tube of claim 2 wherein the intersection of the open end of the receiving chamber (110) and the proximal end of the oblique opening smoothly transitions to form a bevel having an elliptical contour.
The improved visual endotracheal tube according to claim 2, wherein said image pickup device further comprises a wire bundle (17) connected to the camera, said wire bundle (17) partially penetrating the lumen, said wire The tail of the bundle is connected to a USB connector (18); the camera is equipped with an LED light.
The improved visual endotracheal tube according to claim 1, wherein the irrigation channel is connected to an irrigation tube (15) and a flushing joint (16) outside the tube body.
The improved visual endotracheal tube according to claim 1, wherein the patient end end side wall is provided with a Murphy hole (19), and the machine end of the cannula is provided with a joint (3).
A visual endotracheal intubation system, characterized in that the system comprises the visual endotracheal tube and display device of any one of claims 1 to 9.