Adapter for tracheostomy tube and ventilator extension tube

Abstract

This utility model relates to the technical field of endotracheal intubation tubes, specifically a connector for a tracheostomy cannula and a ventilator extension tube. The nested section of the connector consists of a sealing cavity and a cannula cavity. The sealing cavity contains a frustum-shaped sealing sleeve with an aperture no larger than that of the tracheostomy cannula. The sealing cavity also includes an elastic compression element and a movable door. The insertion section consists of an insertion cavity and a reinforcing part. After the insertion cavity of the insertion section is inserted into the ventilator extension tube, the reinforcing part provides secondary fixation between the insertion cavity and the ventilator extension tube. This utility model, through the addition of a sealing sleeve, enhances the sealing and firmness of the connection between the tracheostomy cannula and the connector. If the connector accidentally detaches from the tracheostomy cannula, the movable sealing sleeve helps prevent complete separation. Combined with the assistance of the movable door, the probability of water vapor ejection from the ventilator extension tube is greatly reduced, which is beneficial for normal oxygen supply.

Description

Technical Field

[0001] This utility model relates to the technical field of endotracheal intubation tubes, specifically a connector for a tracheostomy cannula and a ventilator extension tube. Background Technology

[0002] A tracheostomy involves cutting open the cervical trachea and inserting a tracheostomy cannula. One end of the cannula is inserted deep into the pharynx, while the other end remains exposed for connection to a ventilator extension tube or for suctioning the patient. The tracheostomy cannula has a cannula seat, which is secured to the patient's cervical incision by retaining clips at both ends. The portion of the tracheostomy cannula exposed in the neck is a smooth, straight tube. When administering oxygen to the patient through the tracheostomy cannula, one end of the ventilator extension tube is simply placed over the exposed portion. In practice, the ventilator extension tube has a relatively high probability of falling off the tracheostomy cannula. The ventilator extension tube delivers humidified oxygen, and the liquid sprayed from a ventilator extension tube that falls off the tracheostomy can easily wet bedding. Because oxygen supply cannot be provided promptly, detachment of the ventilator extension tube from the tracheostomy can also cause the patient to suffocate.

[0003] To address the aforementioned issues, Chinese patent document CN215231288U proposes a connection structure between a tracheostomy tube and a ventilator tube. The ventilator tube has a nozzle at its opening with a groove on its outer periphery. A sliding groove, lower than the edge of the nozzle, is located along the upper edge of the tracheostomy tube opening. The tracheostomy tube's through-hole is situated within this groove, which also has a spring clip. Pressing and releasing the spring clip allows for the connection and separation of the tracheostomy tube and the ventilator tube. This solution employs a method of improving the matching structure at the connection ends of the tracheostomy tube and the ventilator tube. Chinese patent document CN212575423U provides another connection structure between a ventilator tube and a tracheostomy sleeve. This structure includes a breathing connector for connecting the ventilator tube and an adapter in the form of a cylindrical tube. The adapter is made of rubber, silicone, plastic, or other plastic materials and is deformable under pressure. One end of the adapter is located outside the tracheostomy sleeve, and the other end is inserted into the breathing connector. This solution does not require structural modifications to the existing ventilator tubing and tracheostomy cannula. Instead, it uses a separate adapter. However, to achieve a secure connection between the adapter and the front and rear ends, the adapter must be quite thick. This significantly narrows the oxygen delivery cross-section and affects the delivery efficiency. Utility Model Content

[0004] The purpose of this invention is to overcome the shortcomings of the prior art and provide a connector for tracheostomy cannula and ventilator extension tube, which not only makes the connection between the tracheostomy cannula and ventilator extension tube firm and easy to install and disassemble, but also does not affect the oxygen delivery cross section.

[0005] To achieve the above objectives, the technical solution of this utility model is as follows:

[0006] A connector for connecting a tracheostomy cannula to a ventilator extension tube includes a nested section for connecting to the tracheostomy cannula and an insertion section for connecting to the ventilator extension tube. The nested section consists of a sealing cavity and a cannula cavity, the cross-sectional area of ​​which is larger than that of the cannula cavity. A frustum-shaped sealing sleeve is formed inside the sealing cavity, and the aperture of the sealing sleeve is not larger than that of the tracheostomy cannula. The insertion section consists of an insertion cavity and a reinforcing part. After the insertion cavity of the insertion section is inserted into the ventilator extension tube, the reinforcing part performs secondary fixation between the insertion cavity and the ventilator extension tube.

[0007] The inventive concept of this invention lies in adding a connector to the tracheostomy cannula and ventilator extension tube without modifying their original structures. Furthermore, fixing mechanisms corresponding to the structures of the tracheostomy cannula and ventilator extension tube are respectively provided on both sides of the connector to increase the connection strength between the connector and the tracheostomy cannula and ventilator extension tube. The fixing mechanism of the nested section is a sealing sleeve. The tracheostomy cannula must pass through the sealing sleeve to be inserted into the cannula cavity. The sealing sleeve is elastic and can tightly clamp the tracheostomy cannula, increasing both the connection strength and airtightness. Secondly, a traditional plug-and-play structure is used for connection, making assembly and disassembly relatively convenient. Compared with the rubber adapter described in Chinese patent document CN212575423U, there is no need to sacrifice the cross-sectional area of ​​the cannula cavity, which is beneficial for ensuring oxygen supply.

[0008] As an improvement, the sealing sleeve cavity is frustoconical in shape, with a fixed end and a movable end. The fixed end of the sealing sleeve is fixed to the outer side of the inner wall of the sealing sleeve cavity. Using a movable sealing sleeve, when the tracheostomy tube moves outward from the tube cavity due to changes in patient position, the movable end of the sealing sleeve will move outward and into the sealing sleeve cavity along with the tracheostomy tube. That is, even if the tracheostomy tube separates from the main body of the connector, the sealing sleeve may still remain connected to the tracheostomy tube, which helps prevent moisture from the ventilator extension tubing from being ejected to the outside.

[0009] As an improvement, the reinforcing part is an elastic sleeve hinged to the end of the insertion cavity. After the end of the ventilator extension tube is connected to the insertion cavity, the elastic sleeve is fastened to the end of the ventilator extension tube, which can achieve secondary fixation of the two.

[0010] As a further improvement, a movable door is formed at one end of the sealing cavity. The movable door is located within the gap between the sealing cavity and the sealing sleeve, and its top is connected to the top inner wall of the sealing cavity. When no gas-cutting sleeve is passing through the sealing cavity, the movable door droops down to block the entrance of the sealing cavity. Since the oxygen supply has a certain pressure, when the gas-cutting sleeve separates from the sealing sleeve, the drooping movable door can block the entrance of the sealing cavity, preventing water vapor from being ejected.

[0011] As an improvement, the sealing cavity is rectangular, and the movable door is also rectangular, with the area of ​​the movable door being larger than the area of ​​the entrance.

[0012] As a further improvement, the inner wall of the sealing sleeve cavity is provided with an elastic compression member. When the air-cutting sleeve is inserted into the sealing sleeve cavity, the movable door is lifted by the air-cutting sleeve and compresses the elastic compression member. The elastic compression member helps to enhance the stability of the air-cutting sleeve within the sleeve cavity. When the air-cutting sleeve leaves the sealing sleeve cavity, the movable door also droops rapidly due to the elastic force of the elastic compression member, thus blocking moisture in a timely manner.

[0013] As an improvement, the elastic compression member is V-shaped, with one side of the V-shape fixed to the inner wall of the sealing cavity, and the other side of the V-shape facing the sleeve cavity with its end lower than the top of the sleeve cavity. Compared with a compression spring, the V-shaped elastic compression member is not only simpler in mechanism, but its shape is also more suitable for the movable door.

[0014] As a further improvement, the reinforcement includes an outer cover formed around the insertion cavity and a locking bolt located on the outer cover; when the insertion cavity is inserted into the ventilator extension tube, the locking bolt can be pressed against the outer wall of the ventilator extension tube.

[0015] In summary, this utility model enhances the sealing and firmness of the connection between the tracheostomy tube and the connector by adding a sealing sleeve. When the connector accidentally detaches from the tracheostomy tube, the movable sealing sleeve helps to prevent the connector from completely separating from the tracheostomy tube. In addition, with the assistance of the movable door, the probability of water vapor in the ventilator extension tube being sprayed out is greatly reduced, which is conducive to the normal oxygen supply. Attached Figure Description

[0016] Figure 1 This is a schematic diagram of the structure of Embodiment 1 of the present utility model;

[0017] Figure 2 for Figure 1 Sectional view along the middle AA direction;

[0018] Figure 3 This is a schematic diagram of the air-cutting sleeve detaching from the sealing sleeve cavity. In the diagram, the sealing sleeve moves out of the sealing sleeve cavity along with the air-cutting sleeve but is still connected to the air-cutting sleeve.

[0019] Figure 4 This is a schematic diagram of the structure of Embodiment 1 of the present utility model;

[0020] Figure 5 for Figure 4 A cross-sectional view along the BB direction, showing the elastic compression member in a compressed state;

[0021] Figure 6 for Figure 4 A cross-sectional view along the BB direction, showing the sealing sleeve moved outside the sealing sleeve cavity and the elastic compression member in its restored state;

[0022] Figure 7This is a schematic diagram of the elastic compression member and the movable door in Embodiment 2 of this utility model.

[0023] In the diagram: 10, sealing cavity; 11, sealing sleeve; 12, movable door; 13, entrance; 14, elastic compression element; 20, cannula cavity; 30, insertion cavity; 40, reinforcement part; 41, outer cover; 42, locking bolt; 50, tracheostomy cannula; 60, ventilator extension tube. Detailed Implementation

[0024] The present invention will be further illustrated below with reference to specific embodiments. It should be understood that these embodiments are for illustrative purposes only and are not intended to limit the scope of the present invention. Furthermore, it should be understood that after reading the teachings of this invention, those skilled in the art can make various alterations or modifications to the present invention, and these equivalent forms also fall within the scope defined by the appended claims.

[0025] Example 1

[0026] like Figure 1 , Figure 2 As shown, the connector for connecting a tracheostomy cannula to a ventilator extension tube according to this application includes a nested section for connecting to the tracheostomy cannula 50 and an insertion section for connecting to the ventilator extension tube 60, forming a rotating structure. The nested section consists of a sealing cavity 10 and a cannula cavity 20, with a frustum-shaped sealing sleeve 11 formed within the sealing cavity 10. The sealing sleeve 11 is made of latex material and has a certain degree of elasticity and softness. The sealing cavity 10 is frustum-shaped, and its cross-sectional area is larger than that of the cannula cavity 20. The sealing sleeve 11 does not extend into the cannula cavity 20 so that it does not affect the connection between the tracheostomy cannula 50 and the cannula cavity 20. The aperture of the sealing sleeve 11 is not larger than the aperture of the tracheostomy cannula 50. When the tracheostomy cannula 50 enters the cannula cavity 20 through the sealing sleeve 11, one end of the sealing sleeve 11 is tightly clamped to the outer surface of the tracheostomy cannula 50. The sealing sleeve 11 can be completely fitted and fixed to the inner wall of the sealing sleeve cavity 10, or only one end can be fixed to the sealing sleeve cavity 10. For example... Figure 2 , Figure 3 As shown, the sealing sleeve 11 has a fixed end and a movable end. The diameter of the fixed end is larger than that of the movable end. The fixed end of the sealing sleeve 11 is fixed to the outer side of the inner wall of the sealing sleeve cavity 10. When the sealing sleeve 11 moves out of the sealing sleeve cavity 10 along with the gas-cutting sleeve 50, the movable end of the sealing sleeve 11 still tightly clamps the gas-cutting sleeve 50, and the oxygen and water vapor flowing inside will not be ejected to the outside.

[0027] Obviously, when medical staff actively connect the connector to the tracheostomy cannula 50, they can simply remove the connector from the tracheostomy cannula 50. After removing the connector, procedures such as suctioning can be performed.

[0028] like Figure 1-3As shown, the insertion section of the connector consists of an insertion cavity 30 and a reinforcing part 40. After the insertion cavity 30 of the insertion section is inserted into the ventilator extension tube 60, the reinforcing part 40 can perform secondary fixation between the insertion cavity 30 and the ventilator extension tube 60. In this embodiment, the reinforcing part 40 is an elastic sleeve hinged to the end of the insertion cavity 30.

[0029] The inner diameter of the cannula 20 corresponds to the outer diameter of the tracheostomy cannula 50, allowing the tracheostomy cannula 50 to be smoothly inserted into the cannula 20. The outer diameter of the insertion cavity 30 corresponds to the inner diameter of the connector of the ventilator extension tube 60, allowing the connector of the ventilator extension tube 60 to be smoothly fastened onto the insertion cavity 30. After fastening, the reinforcing part 40 is then fastened onto the connector of the ventilator extension tube 60, making it less likely for the ventilator extension tube 60 to detach from the connector and improving the connection's firmness.

[0030] Example 2

[0031] like Figure 4-6 As shown, the difference between this embodiment and Embodiment 1 is that the connector is generally tetrahedral in structure. The sealing cavity 10 is rectangular, and one end of the sealing cavity 10 forms an inlet 13 for inserting the air-cutting sleeve 50. A movable door 12 is provided at the inlet 13 of the sealing cavity 10. The movable door 12 is located within the gap between the sealing cavity 10 and the sealing sleeve 11. The movable door 12 is rectangular, and its top is hinged to the top inner wall of the sealing cavity 10. The area of ​​the movable door 12 is larger than the area of ​​the inlet 13. An elastic compression member 14 is also provided on the inner wall of the sealing cavity 10. The elastic compression member 14 is V-shaped, with one side of the V-shape fixed to the inner wall of the sealing cavity 10, and the other side of the V-shape facing the sleeve cavity 20 with its end lower than the top of the sleeve cavity 20. The structure of the elastic compression member 14 and the movable door 12 is as follows... Figure 7 As shown, two elastic compression members 14 can be arranged side by side. Obviously, the elastic compression member 14 can also be a compression spring.

[0032] As the blast sleeve 50 moves toward the sleeve cavity 20 and passes through the sealing sleeve cavity 10, the blast sleeve 50 lifts the movable door 12. The movable door 12 compresses the elastic compression member 14, and in turn, the movable door 12 exerts a downward clamping force on the blast sleeve 50, which helps to ensure a firm connection between the blast sleeve 50 and the sleeve cavity 20. When the blast sleeve 50 exits the sealing sleeve cavity 10, the movable door 12 droops, causing the elastic compression member 14 to return to its original position. The drooping movable door 12 can block the entrance 13 of the sealing sleeve cavity 10.

[0033] The reinforcing part 40 includes an outer cover 41 formed around the insertion cavity 30 and a locking bolt 42 located on the outer cover 41. When the insertion cavity 30 is inserted into the ventilator extension tube 60, the connector of the ventilator extension tube 60 can be pressed between the insertion cavity 30 and the outer cover 41 by rotating the locking bolt 42.

Claims

1. An adaptor for the connection of a tracheostomy tube to a ventilator extension tube, comprising a nesting section for connection to a tracheostomy tube (50) and an insertion section for connection to a ventilator extension tube (60), characterised in that: The nested section consists of a sealing cavity (10) and a cannula cavity (20). The cross-sectional area of ​​the sealing cavity (10) is larger than that of the cannula cavity (20). A frustum-shaped sealing sleeve (11) is formed inside the sealing cavity (10). The aperture of the sealing sleeve (11) is not larger than that of the tracheostomy cannula (50). The insertion section consists of an insertion cavity (30) and a reinforcing part (40). After the insertion cavity (30) of the insertion section is inserted into the ventilator extension tube (60), the reinforcing part (40) performs secondary fixation between the insertion cavity (30) and the ventilator extension tube (60).

2. An adaptor for tracheostomy tube and ventilator extension tube as claimed in claim 1, wherein: The sealing cavity (10) is frustum shaped, and the sealing sleeve (11) has a fixed end and a movable end. The fixed end of the sealing sleeve (11) is fixed to the outer side of the inner wall of the sealing cavity (10).

3. The adapter for tracheostomy tube and ventilator extension tube of claim 1, wherein: The reinforcing part (40) is an elastic sleeve hinged to the end of the insertion cavity (30).

4. The adapter for tracheostomy tube and ventilator extension tube of claim 1, wherein: A movable door (12) is formed at one end of the sealing cavity (10). The movable door (12) is located in the gap between the sealing cavity (10) and the sealing sleeve (11). The top of the movable door (12) is connected to the top inner wall of the sealing cavity (10). When the gas cutting sleeve (50) does not pass through the sealing cavity (10), the movable door (12) hangs down and blocks the entrance (13) of the sealing cavity (10).

5. The adaptor for tracheostomy tube and ventilator extension tube of claim 4, wherein: The sealing cavity (10) is rectangular, and the movable door (12) is also rectangular. The area of ​​the movable door (12) is larger than the area of ​​the entrance (13).

6. The connector for a tracheostomy cannula and a ventilator extension tube as described in claim 4 or 5, characterized in that: The inner wall of the sealing cavity (10) is provided with an elastic compression member (14). When the air-cutting sleeve (50) is inserted into the sealing cavity (10), the movable door (12) is lifted by the air-cutting sleeve (50) and compresses the elastic compression member (14).

7. The adaptor for tracheostomy tube and ventilator extension tube of claim 6, wherein: The elastic compression member (14) is V-shaped, with one side of the V-shape fixed to the inner wall of the sealing cavity (10), and the other side of the V-shape facing the sleeve cavity (20) with its end lower than the top of the sleeve cavity (20).

8. The adaptor for tracheostomy tube and ventilator extension tube as claimed in claim 1 or 4 wherein: The reinforcement (40) includes an outer cover (41) formed around the insertion cavity (30) and a locking bolt (42) provided on the outer cover (41); when the insertion cavity (30) is inserted into the ventilator extension tube (60), the locking bolt (42) can be pressed against the outer wall of the ventilator extension tube (60).

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