CN215275247U

CN215275247U - Tracheal catheter with plastic inner diversion trench

Info

Publication number: CN215275247U
Application number: CN202121344255.1U
Authority: CN
Inventors: 钟鸣; 黄俊峰; 何义舟; 吴威; 诸杜明
Original assignee: Zhongshan Hospital Fudan University
Current assignee: Zhongshan Hospital Fudan University
Priority date: 2021-06-17
Filing date: 2021-06-17
Publication date: 2021-12-24
Anticipated expiration: 2031-06-17

Abstract

The utility model discloses a take endotracheal tube of guiding gutter in plastic shape, a serial communication port, including the endotracheal tube body, the breathing machine interface of breathing machine is connected for being used for to the one end of endotracheal tube body, is equipped with the plastic shape guiding gutter that reduces the air current torrent and form on the other end inner wall of endotracheal tube body, and the outside of endotracheal tube body is equipped with the gasbag, and the air bag is connected and is used for aerifing the inflation valve door of reaching the pressure measurement for the gasbag. The utility model discloses an endotracheal tube is according to the hydrodynamics principle, increases the guiding gutter in the plastic of book page form, can obviously reduce the production of breathing machine high-speed air current vortex behind the endotracheal tube to when the fibre bronchoscope passes through, the deformation characteristic of guiding gutter in the plastic maintains the fibre bronchoscope between two parties, keeps the breathing machine air current to pass through smoothly, reduces the harm of gas torrent to patient's air flue and hypoxemia's incidence.

Description

Tracheal catheter with plastic inner diversion trench

Technical Field

The utility model relates to a take endotracheal tube of guiding gutter in plastic shape belongs to medical equipment technical field.

Background

In the surgical operation or emergency treatment process of critical patients, the patients need to be assisted by a respirator for ventilation through an oral tracheal intubation to maintain the effective lung oxygenation, and some critical patients even need a long-time tracheal intubation, but the traditional tracheal catheter design adopts a medical plastic tube with a smooth inner wall. When air is blown into the endotracheal tube from one end thereof by a ventilator, turbulent flow is generated as laminar air flows over the solid wall boundary.

Turbulent flow is a random flow phenomenon occurring in fluid and gas, and when the flow velocity is very small, the fluid flows in layers and is not mixed with each other, so that laminar flow is obtained; when the flow velocity is increased to a large extent, the flow lines are no longer clearly distinguishable, the flow field has many small eddies, the laminar flow is destroyed, and adjacent flow layers not only slide but also mix. The fluid then moves irregularly, with a component velocity in a direction perpendicular to the axis of the flow tube, which motion is known as turbulence. The high-speed airflow generated by the respirator forms turbulent flow after passing through the tracheal catheter, so that the effective work of the respirator is lost, the performance of the respirator is reduced, the turbulent flow of the gas entering the lung of a patient can cause long-term damage to airway mucosa of the patient, and particularly for critical patients with severe hypoxemia and severe lung lesion, a long-term tracheal cannula is often needed, so that the original lung damage of the patient is aggravated, the body is severely anoxic, and the difficult-to-recover result is caused.

Disclosure of Invention

The to-be-solved technical problem of the utility model is: when airflow is blown into the conduit from one end of the tracheal conduit by a respirator, the problem that the mucosa of the airway of a patient is injured for a long time due to turbulent flow generated when laminar airflow flows through the boundary of the solid conduit wall is solved.

In order to solve the technical problem, the technical scheme of the utility model a take endotracheal tube of guiding gutter in plastic shape is provided, a serial communication port, including the endotracheal tube body, the breathing machine interface of one end for being used for connecting the breathing machine of endotracheal tube body is equipped with the guiding gutter in the plastic shape that reduces the air current torrent and form on the other end inner wall of endotracheal tube body, and the outside of endotracheal tube body is equipped with the gasbag, and the air bag connection is used for aerifing for the gasbag and the charging valve of pressure measurement.

Preferably, the plastic inner diversion trench comprises a plurality of page-shaped protrusions uniformly distributed on the inner wall of the endotracheal tube body.

Preferably, the width of the leaf-shaped protrusion occupies the tube diameter 1/4 of the endotracheal tube body, and the length of the leaf-shaped protrusion is the endotracheal tube 1/2.

Preferably, the structure of the plastic inner diversion trench is a deformable structure.

Preferably, the page-shaped protrusions are made of silica gel; the shape of the page-shaped protrusion is a sheet-shaped structure.

Preferably, the air bag is arranged at the position, close to the plastic inner diversion groove, on the outer side of the tracheal catheter body.

The utility model discloses an endotracheal tube is according to the hydrodynamics principle, increases the guiding gutter in the plastic of book page form, can obviously reduce the production of breathing machine high-speed air current vortex behind the endotracheal tube to when the fibre bronchoscope passes through, the deformation characteristic of guiding gutter in the plastic maintains the fibre bronchoscope between two parties, keeps the breathing machine air current to pass through smoothly, reduces the harm of gas torrent to patient's air flue and hypoxemia's incidence. Through the utility model discloses a tracheal catheter improves the effect of clinical treatment, will have great meaning.

Drawings

FIG. 1 is a schematic view of an endotracheal tube with a shapeable inner baffle channel;

FIG. 2 is a partially enlarged view of the shapeable inner channel;

FIG. 3 is a schematic view of the coronal view of an endotracheal tube with a shapeable inner baffle groove;

FIG. 4 is a schematic view in the sagittal plane of an endotracheal tube with shapeable inner channels;

FIG. 5 is a schematic view of a bronchofiberscope passing through the coronal plane of a endotracheal tube with shapeable inner channels;

fig. 6 is a schematic view of a fiberoptic bronchoscope passing through a tracheal tube with a shapeable inner baffle channel.

Detailed Description

In order to make the present invention more comprehensible, preferred embodiments are described in detail below with reference to the accompanying drawings.

The utility model provides a tracheal catheter with a plastic inner diversion trench, which is used for a surgical patient or a critical patient to perform auxiliary ventilation through a tracheal intubation by a respirator, as shown in figure 1, the tracheal catheter comprises a tracheal catheter body 5, wherein one end of the tracheal catheter body 5 is a respirator interface 1, and the respirator interface 1 is used for connecting a respirator for auxiliary ventilation; a plastic inner guide groove 4 is formed in the inner wall of the other end of the tracheal catheter body 5, as shown in fig. 2, 3 and 4, the plastic inner guide groove 4 comprises six leaf-shaped protrusions 41 made of silica gel and thin sheets and located on the inner wall of the tracheal catheter body 5, the six leaf-shaped protrusions 41 divide the port of the circular tracheal catheter body 5 into six equal parts, the width of each leaf-shaped protrusion 41 accounts for 1/4 of the diameter of the tracheal catheter body 5, and the length of each leaf-shaped protrusion is 1/2 of a tracheal cannula; the outer side of the tracheal catheter body 5, which is close to the plastic inner diversion trench 4, is provided with an air bag 3, and the air bag 3 is used for sealing a gap between the tracheal catheter body 5 and a trachea and fixing the tracheal catheter body 5 at the position in the trachea; the air bag 3 is connected with an inflation valve 2, and the inflation valve 2 is used for inflating the air bag 3 and measuring pressure.

The working principle of the utility model is as follows:

when the air current is from the utility model discloses an endotracheal tube one end is insufflated by the breathing machine the utility model discloses an among the endotracheal tube, can produce the torrent when laminar flow air current flows through solid pipe wall border. When the fluid generates turbulent flow, the resistance large flow is small, and the energy consumption is increased. Experiments have shown that the energy loss E is related to the velocity by Δ E — kv2, where k is a proportionality coefficient, which depends on the shape and size of the pipe and the material of the pipe. According to the fluid mechanics principle, the book-page-shaped guide grooves (i.e. the shaping inner guide grooves 4) can obviously reduce the formation of air flow turbulence, and the deformability of the guide grooves ensures that the air flow of the respirator can smoothly pass through when the fiberbronchoscope 6 passes through the center, as shown in fig. 5 and 6.

Claims

1. The utility model provides a take endotracheal tube of guiding gutter in plastic, a serial communication port, including endotracheal tube body (5), the breathing machine interface (1) of breathing machine is for being used for connecting to the one end of endotracheal tube body (5), be equipped with guiding gutter (4) in the plastic that reduces the air current torrent and form on the other end inner wall of endotracheal tube body (5), the outside of endotracheal tube body (5) is equipped with gasbag (3), gas charging flap (2) that gasbag (3) connection is used for aerifing and the pressure measurement for gasbag (3).

2. The endotracheal tube with shapeable inner guide groove according to claim 1, wherein the shapeable inner guide groove (4) comprises a plurality of book-shaped protrusions (41) uniformly distributed on the inner wall of the endotracheal tube body (5).

3. The endotracheal tube with shapeable inner guide groove according to claim 2, wherein the width of the leaf-shaped protrusion (41) occupies the tube diameter 1/4 of the endotracheal tube body (5), and the length of the leaf-shaped protrusion (41) is 1/2.

4. The endotracheal tube with plastic inner guide groove according to claim 2, characterized in that the structure of the plastic inner guide groove (4) is a deformable structure.

5. The endotracheal tube with a shapeable inner baffle groove according to claim 2 or 4, wherein the page-shaped protrusions (41) are made of silica gel; the shape of the page-shaped protrusion (41) is a sheet-shaped structure.

6. The endotracheal tube with the shapeable inner guide groove according to claim 1, wherein the air bag (3) is disposed at a position close to the shapeable inner guide groove (4) at the outer side of the endotracheal tube body (5).