WO2018205675A1

WO2018205675A1 - Ventilation catheter

Info

Publication number: WO2018205675A1
Application number: PCT/CN2018/072834
Authority: WO
Inventors: 董东生
Original assignee: 威海吉威重症医疗制品有限公司
Priority date: 2017-05-10
Filing date: 2018-01-16
Publication date: 2018-11-15

Abstract

A ventilation catheter. The ventilation catheter comprises a hollow catheter body (1); a part of the catheter body (1) is located in the trachea (0), and the other part thereof is located outside the trachea (0); a hollow (10) of the catheter body (1) has two openings, i.e., an extratracheal opening (101) and an endotracheal opening (102); a flexible, film-like, expandable bag (2) is provided on one side of the endotracheal opening (102); a part of the bag (2) does not change along with expansion of the bag (2) to form at least one recessed part (211) in a bag area (21); the recessed part (211) in the bag area (21) is open towards the extratracheal opening (101) side of the ventilation catheter and is closed towards the endotracheal opening (102) side of the ventilation catheter, so that a secretion (3) on the bag (2) can enter the recessed part (211) in the bag area (21) when the ventilation catheter is in use; an endotracheal opening (42) of a suction catheter (4) for the secretion (3) on the bag (2) is located in the recessed part (211) in the bag area (21). Since the opening of the suction catheter for the secretion (3) on the bag (2) is located in the bag area (21), the secretion (3) on the bag (2) can be sucked out thoroughly, thereby reducing the risk of pulmonary infection caused by falling of the secretion to the greatest extent.

Description

Ventilation catheter

Technical field

The invention relates to a ventilation catheter and belongs to the technical field of medical device manufacturing.

Background technique

The establishment of artificial airway is one of the most commonly used rescue methods in clinical medicine. The literature shows that the incidence of lower respiratory tract infection in hospitals is 10%-65%, and the mortality rate is more than 20%. Whether the catheter is used for tracheal intubation or tracheal incision, the capsule fixed in the trachea will inevitably cause secondary mucosal damage due to the filling of the large air pressure. Intermittent reduction of pressure will inevitably lead to the capsule. Accumulated secretions also contain falling saliva or gastric juice, etc., into the bronchi, and this secretion usually contains a large number of pathogenic bacteria, and the lung infection caused by the secretion of secretions on the balloon of the ventilation catheter is difficult to completely solve at present. Clinical problem. The current solution is continuous or intermittent suction of the secretion on the capsule. The suction tube opening is located above the capsule area, and there is a certain distance from the upper edge of the filling capsule, so that the secretion cannot be attracted completely, although the amount of the falling is somewhat Reduced but any source of infection is fatal to patients with low resistance, and the secretion of cysts on the body is not the most difficult.

Summary of the invention

The technical problem to be solved by the present invention is to provide a ventilation catheter, in which the suction tube opening of the secretion on the capsule is located in the capsule region, and the secretion on the capsule can be completely sucked out.

The invention is realized as follows: a ventilation duct comprises a hollow tube body, a part of the tube body is located in the trachea, a part is located outside the trachea, and the hollow part of the tube body has two openings, the opening of the trachea and the opening of the trachea are for the human body. Appropriate, the tube body is usually slightly bent toward the side of the epiglottis cartilage and facing away from the side of the esophagus. The open side of the trachea is provided with a flexible film-like expandable capsule body having a hollow column shape with two upper and lower openings. The upper opening of the capsule is adjacent to the side of the outer opening of the tracheal tube of the ventilation duct, and the lower opening of the capsule is adjacent to the opening side of the trachea of the ventilation duct, and the inner side of the upper and lower sides of the capsule is sealed with the outer side of the ventilation duct, wherein the gap is When the balloon is empty, the fluid in the capsule is filled with fluid expansion, and a region between the outer side of the ventilation catheter and the inner membrane of the trachea is defined as a capsule region, which is a three-dimensional shape formed by the balloon expansion. The functional space occupies the gap between the tracheal mucosa and the ventilation catheter tube, and prevents the tracheal mucosa from contacting the ventilation catheter tube. The capsule region contains a recessed portion that can be located therein; further comprising a secretion aspirating conduit on the balloon, the suction catheter having at least one outer tracheal opening and one intratracheal opening, wherein at least one portion of the balloon does not change when expanded The concave portion in the region of the capsule, the concave portion in the region of the capsule is open to the side of the outer opening of the tracheal tube of the ventilation catheter, and is closed to the side of the opening of the tracheal tube of the ventilation catheter, so that the secretion on the capsule can enter when the ventilation catheter is in use. In the recessed portion of the balloon region, the intratracheal opening of the secretion-supplying catheter on the balloon is located within the recessed portion of the balloon region.

The secretion aspirating catheter on the balloon is a channel inside the body wall, and at least one opening is located in a recessed portion in the region of the balloon.

The cystic secretion aspiration catheter is a conduit adjacent the outer wall of the vessel, and at least one opening is located in a recessed portion of the balloon region.

The recessed portion in the region of the balloon is placed on the esophageal side of the ventilation catheter.

The recessed portion in the region of the balloon is disposed at the junction of the epiglottic cartilage side and the esophageal side of the ventilation catheter.

In order to avoid the generation of negative pressure during suction and the inhalation of oral secretions, an intake duct is also included, and the intake duct is connected to the outside of the human body, and has an air outlet and an air outlet, and the air outlet is arranged at the outer opening of the tracheal tube and the capsule. A recessed portion between body regions or within a balloon region.

When the ventilation catheter is used through the nose and mouth, the air outlet of the air inlet duct is disposed in the area under the sonosensor corresponding to the airway tube.

When the ventilation catheter is used through the tracheotomy, the air outlet of the intake duct is disposed in the portion of the tracheal tube within the trachea.

The air inlet of the intake duct is connected to the air filter.

The air inlet of the intake duct is connected to the air humidification device.

Since the present invention provides a ventilation catheter, the suction tube opening of the secretion on the capsule is located in the capsule region, and the secretion on the capsule can be completely sucked out, thereby maximally avoiding the risk of lung infection caused by secretion falling. .

DRAWINGS

Figure 1 is a schematic view showing the structure of a conventional ventilation catheter

2a is a schematic view showing the structure of a capsule of a conventional ventilation catheter

Figure 2b is a schematic view showing the structure of the expanded balloon after the existing ventilation catheter

Figure 2c is a schematic view showing the structure of a capsule of a conventional ventilation catheter

Figure 3 is a schematic horizontal cross-sectional view of the glottal structure

Figure 4a is a schematic view of the structure of the present invention

Figure 4b is a schematic view showing the structure of the capsule region of the present invention

Figure 5 is a schematic view showing the structure of a capsule according to a first embodiment of the present invention;

Figure 6 is a schematic view showing the structure of a capsule according to a second embodiment of the present invention;

Figure 7 is a schematic view showing the structure of a third embodiment of the present invention

Figure 8 is a schematic view showing the structure of a fourth embodiment of the present invention

In the figure: 0. trachea, 01. tracheal intima, 00 capsule conduction tube, 001. capsule conduction tube outer opening, 002. capsule conduction tube capsule opening, 1. ventilation catheter tube, 10. Ventilation catheter tube body cavity, 101. Ventilation catheter tube body tracheal opening, 102. Ventilation catheter tube body tracheal opening, 12. Ventilation catheter tube body lateral side, 2. Capsule, 20. Capsule space, 201. Capsule Opening, 202. lower opening of the capsule, 23. sealing connection portion of the outer surface of the balloon and the ventilation catheter wall, 24. defect portion on the balloon, 231. inner side of the sealing portion of the outer side of the balloon and the ventilation catheter wall, 232 The outer side of the sealing portion of the outer surface of the balloon and the ventilation catheter, 233. the region where the balloon is not inflated, the region of the capsule, the recessed portion in the region of the capsule, 211. the secretion, the suction catheter, 41. Attracting the catheter outside the tracheal opening, 42. absorbing the catheter lumen opening, 421. attracting the catheter tracheal opening in the region of the balloon, 43. the suction catheter is independent of the ventilation catheter wall, 5. the inlet conduit, 51. intake duct intake port, 52. intake duct outlet port, 6. epiglottis cartilage, 7. esophagus, 8. sound .

Specific embodiment

Example 1:

Referring to Figures 4a, 4b, the present invention is placed in the trachea 0, and the capsule 2 is inflated to form a capsule region 21 which is a three-dimensional functional space formed by the expansion of the capsule 2, occupying the endotracheal membrane. 01 and the gap between the ventilation catheter tube 1 and the endotracheal membrane 01 and the ventilation catheter tube 1 are prevented from contacting, as shown in Fig. 5, a portion 233 of the capsule 2 does not change with expansion to form at least one capsule. The recessed portion 211 in the region 21, the recessed portion 211 in the capsule region 21 is open to the side of the airway opening 101 of the ventilation catheter, and is closed to the side of the airway opening 102 of the ventilation catheter, so that the secretion 3 on the capsule can be ventilated. When the catheter is in use, it enters the recessed portion 211 in the capsule region 21, the capsule region 21 includes the recessed portion 211 located therein; and further includes the capsule secretion 3 attracting the catheter 4, and the suction conduit 4 has at least one tracheal The opening 41 and an endotracheal opening 42 in which the secretion 3 of the balloon is attracted to the intratracheal opening 421 of the catheter 4 is located in the recessed portion 211 in the balloon region 21; the secretion 3 on the balloon can be completely absorbed.

In the conventional ventilation catheter shown in FIG. 1, the opening 42 of the suction catheter 4 when the capsule 2 is inflated is located outside the capsule region 21, and has a certain distance from the upper boundary of the capsule region 21, which is at least the capsule 2 and The outer side of the ventilation duct wall seals the width of the connecting portion 23 so that the secretion 3 cannot be attracted completely.

2a, 2c, the structure of the balloon 2 of the existing ventilation catheter, the capsule 2 is a hollow column, the upper opening 201 of the capsule, the lower opening 202 of the capsule is sealingly connected with the outer side of the ventilation catheter tube 1, and the capsule is inside. The inner side surface 231 of the outer side sealing joint portion 23 of the air bag and the air venting tube is sealingly connected with the outer side surface 12 of the tube body 1. The outer side surface 232 of the sealing portion of the outer side surface 12 of the balloon body and the outer side of the air venting catheter does not follow the capsule body. Partially expanded; Figure 2b shows the balloon region 21 formed by the expansion of the balloon 2 of the prior art ventilation catheter 1 without any recessed structure thereon.

As shown in Fig. 3, the ventilation catheter tube 1 is generally bent toward the side of the epiglottis cartilage 6 and protrudes toward the side of the esophagus 7.

Example 2:

Referring to Figure 6, the other portions of the ventilation catheter are identical to the first embodiment, and the portion 23 of the balloon 2 that is sealingly coupled to the outer side surface 12 of the ventilation catheter tube 1 has a downward arcuate defect 24, i.e., compared to the first embodiment. The capsule 2 is partially defective 24, and after the balloon 2 is inflated, the partial defect 24 surrounds the expanded capsule on three sides and naturally forms a recess 211 in the capsule region 21.

Example 3:

Referring to Figure 7, the present invention is placed in a state of being placed in the trachea 0. The balloon 2 is inflated to form a capsule region 21, and the recessed portion 211 in the balloon region 21 is located on the side of the esophagus 7 of the ventilation catheter, and the endotracheal opening of the suction catheter 4 is opened. 42 is located in the recessed portion 211 in the capsule region 21, in the supine position, especially in patients with general anesthesia or coma, which is beneficial to completely attract the secretion 3 on the capsule, and the air inlet of the intake duct 5 is provided with air filtration. Device.

Example 4:

Referring to Figure 8, the present invention is placed in the trachea 0, the capsule 2 is inflated to form a capsule region 21, and the recessed portion 211 in the balloon region 21 is located at the junction of the esophagus 7 side of the ventilation catheter and the epiglottis 6 side. One or each of the left and right, the endotracheal opening 42 of the suction catheter 4 is located in the concave portion 211 in the capsule region 21, respectively, in the supine or lateral position, is beneficial to completely attract the secretions on the capsule 3, and the intake An air humidification and or warming device is provided at the air inlet of the duct 5. .

Claims

A ventilation catheter for establishing an artificial airway, configured and relatively fixed in a tracheal region, comprising a hollow tubular body (1), a portion of the tubular body (1) being located in the trachea (0) and a portion located in the trachea (0) In addition, the hollow (10) of the tube body has two openings, the outer opening of the trachea (101) and the opening (102) of the trachea are adapted to the human body, and the tube body (1) is usually slightly bent toward the side of the epiglottis cartilage while facing away. On one side of the esophagus, a flexible film-like expandable capsule (2) is provided on one side of the inner opening (102) of the trachea, and the capsule (2) has a hollow column shape with two upper and lower openings and an opening on the capsule (201). Adjacent to the side of the outer opening (101) of the ventilation catheter, the lower opening (202) of the capsule is adjacent to the side of the airway opening (102) of the ventilation duct, and the inner side of the part of the capsule (23) of the upper and lower sides of the capsule (2) ( 231) sealingly connected with the outer side surface (12) of the ventilation catheter tube body (1), wherein the gap is the inner space of the capsule (20), and when the ventilation catheter is in use, the fluid in the capsule body (20) is filled with fluid expansion, and a ventilation is defined to define a ventilation. The area between the outer side of the catheter (12) and the endotracheal membrane (01) is the capsule area (21), and also includes the secretion on the capsule (3), the suction catheter (4), and the suction catheter ( 4) at least one outer tracheal opening (41) and one intratracheal opening (42), characterized in that a portion of the balloon (2) does not change with expansion to form a depression in at least one of the balloon regions (21) Part (211), the concave portion (211) in the balloon region (21) is open to the side of the ventilating catheter tracheal opening (101), and is closed to the side of the ventilating catheter tracheal opening (102), so that the capsule is secreted. The object (3) can enter the recessed portion (211) in the capsule region (21) when the ventilation catheter is in use, and the intratracheal opening (421) of the capsule secretion (3) in the balloon (4) is located in the capsule region. Inside the recessed portion (211) in (21).
The ventilation catheter according to claim 1, characterized in that the capsule secretion (3) suction conduit (4) is a passage inside the tubular body wall, and at least one opening is located in a recessed portion in the capsule region (21) ( 211).
A ventilating catheter according to claim 1, wherein the balloon secretion (3) suction catheter (4) is a tube adjacent to the lateral side of the tube body, and at least one opening is located in the recessed portion of the capsule region (21) (211).
A ventilation catheter according to claim 1, characterized in that the recessed portion (211) in the balloon region (21) is arranged on the esophagus (7) side of the ventilation catheter.
The ventilation catheter according to claim 1, characterized in that the recessed portion (211) in the balloon region (21) is provided at the junction of the side of the anaesthetic cartilage (6) and the side of the esophagus (7) of the ventilation catheter.
The ventilating duct according to claim 1, further comprising an intake duct (5), the intake duct (5) being in communication with the outside of the human body, having an air inlet (51) and an air outlet (52). The port (52) is disposed in a recessed portion (211) between the tracheal tube outer opening (101) and the balloon region (21) or within the balloon region (21).
The ventilation catheter according to claim 6, wherein when the ventilation catheter is used through the nose and mouth, the air outlet (52) of the intake duct (5) is disposed in the area under the glottis (8) corresponding to the endotracheal tube Inside.
The ventilation catheter according to claim 6, wherein when the ventilation catheter is used through the tracheotomy, the air outlet (52) of the intake duct (5) is disposed at a portion of the tracheal tube within the trachea.
A ventilation duct according to claim 6, characterized in that the air inlet (52) of the intake duct (5) is connected to the air filter.
A ventilation duct according to claim 6, characterized in that the air inlet (52) of the intake duct (5) is connected to an air humidification and or warming device.