Trachea cannula plugging test device

Abstract

The utility model provides a trachea cannula plugging test device which comprises an elastic sleeve, a cannula plugging assembly and a cannula plugging cover, the cannula plugging assembly comprises a cylindrical breather pipe and an end plate sealing the top of the breather pipe, the cannula plugging cover is arranged on the outer side of the top of the breather pipe in a sleeved mode, and the cannula plugging cover and the breather pipe share the same central axis; the upper part of the elastic sleeve is tightly hooped outside the breather pipe, and the lower part of the elastic sleeve is tightly hooped outside the head end of the inner cannula of the trachea cannula, so that the elastic sleeve is not easy to fall off and is suitable for different types of trachea cannulas; three first vent holes are formed in the end plate, a second vent hole is formed in the tube blocking cover, the first vent holes and the second vent hole are at least partially communicated or the first vent holes and the second vent hole are closed by rotating the tube blocking cover, so that partial tube blocking or full tube blocking is achieved, and a patient is helped to achieve spontaneous respiration by controlling the ventilation capacity. Due to the sputum suction side tube, the medical staff can conveniently perform sputum suction operation on the patient; the filter screen can prevent foreign matters or mosquitoes from entering the trachea cannula, and pain of a patient is prevented from being increased.

Description

Technical Field

[0001] The utility model relates to a tracheal tube test plugging device, in particular to the technical field of medical equipment. Background Art

[0002] Tracheotomy refers to the insertion of a tracheal tube after opening the cervical trachea (the tracheal tube consists of an inner tube A, an outer tube B, and a tie plate C. The tie plate C is fixed to the top of the outer tube B, the inner tube A is connected to the inside of the outer tube B, and the tip of the inner tube A is at the top of the tie plate C). It is a common surgery to relieve dyspnea caused by laryngeal origin, respiratory dysfunction, or retention of lower respiratory tract secretions. Its purpose is to relieve airway obstruction and establish an artificial airway. When the patient has mastered pursed lip breathing and coughing correctly, the tracheal tube can be removed. However, due to the long time the tracheal tube has been in place, some patients will not be able to adapt to oral and nasal breathing if the tracheal tube is removed directly, resulting in extubation failure. In view of the above situation, a trial blockage of the tube is required before extubation. That is, the tip of the inner tube A is first partially blocked, and then transitioned to full blockage. By controlling the ventilation volume, the patient is slowly helped to achieve spontaneous breathing.

[0003] At present, due to the lack of special tube blocking test instruments, homemade corks, cotton swab heads wrapped with tape, disposable gastric tube connectors, vacuum blood collection tube pistons or rubber stopper caps of hemocoagulase bottles are generally used as tracheal tube blocking test instruments in clinical practice. These instruments need to be homemade and are inconvenient to operate and fix, and are easy to fall off. At the same time, due to the different sizes of tracheal tubes to be blocked, these instruments cannot be well matched to tubes of different models. During the production process, they need to be repeatedly adjusted according to the model of the tracheal tube. The operation is cumbersome, not only time-consuming, but also increases the workload of nursing. The most important thing is that these instruments can only achieve full blocking of the tracheal tube, or cannot freely select and adjust the range of trial blocking, and cannot enable patients to gradually transition from partial blocking to full blocking. Therefore, there is an urgent need for a dedicated new type of tracheal tube blocking test instrument to solve the above problems. Utility Model Content

[0004] The purpose of the utility model is to provide a new type of tracheal tube blocking test device, which can be adapted to different types of tracheal tubes and is convenient for freely selecting and adjusting the blocking range of the test tube, so that the patient can practice gradually transitioning from partial blocking to full blocking, in preparation for removing the tracheal tube.

[0005] The utility model adopts the following technical solution: a tracheal tube test plugging device, comprising an elastic sleeve, a plugging assembly and a plugging cover, wherein the plugging assembly comprises a cylindrical vent tube and an end plate for closing the top opening of the vent tube, and the plugging cover is sleeved on the outer side of the top of the vent tube, and the plugging cover and the vent tube share a central axis;

[0006] The upper part of the elastic sleeve is tightly clamped on the outside of the ventilation tube, and the lower part of the elastic sleeve is detachably clamped on the outside of the inner tube head end of the tracheal tube. At least one first ventilation hole is opened on the end plate, and a second ventilation hole is opened on the pipe blocking cover. When the pipe blocking cover rotates along the central axis, the first ventilation hole and the second ventilation hole are at least partially connected or the first ventilation hole and the second ventilation hole are closed to achieve partial or full pipe blocking.

[0007] Furthermore, there are three first ventilation holes, and the apertures of the three first ventilation holes are inconsistent, and the aperture of the second ventilation hole is greater than or equal to the first ventilation hole with the largest aperture, and the centers of the three first ventilation holes and one second ventilation hole are on the same circumference with the central axis as the center.

[0008] Furthermore, the pipe blocking cover includes a circular top plate and an annular side plate, the side plate is fixedly installed on the bottom edge of the top plate, the cross-section of the side plate is in the shape of a "7", and a flange is provided on the top edge of the ventilation pipe. The pipe blocking cover is covered and installed on the outside of the end plate and the flange, so that the pipe blocking cover can only rotate along the flange, and the second ventilation hole is opened on the top plate.

[0009] Preferably, a rubber pad is fixedly provided on the contact surface between the top plate and the end plate, and / or on the contact surface between the flange and the side plate; or the pipe blocking cover is entirely made of elastic rubber material.

[0010] Furthermore, hand-held bars are symmetrically arranged on both sides of the bottom of the elastic sleeve.

[0011] Furthermore, a hanging ring is fixedly provided on the side of the elastic sleeve.

[0012] Furthermore, a suction side tube is provided on the side of the ventilation tube, the inner cavity of the suction side tube is connected to the inner cavity of the ventilation tube, a closed end cover is detachably installed at the other end of the suction side tube, and a through hole is opened on the upper part of the elastic sleeve for the suction side tube to pass through.

[0013] Furthermore, a filter is fixedly provided in the ventilation pipe.

[0014] The tracheal tube trial blocking device of the utility model can be tightened on the outside of the inner tube head end of the tracheal tube by the elastic force of the elastic sleeve, and is not easy to fall off, and is suitable for tracheal tubes of different models; and the blocking cover can be rotated to make the first ventilation hole and the second ventilation hole at least partially connected or to make the first ventilation hole and the second ventilation hole closed, so as to achieve partial or full blocking of the tube, and slowly help the patient to achieve independent breathing by controlling the ventilation volume; the provided sputum suction side tube can facilitate medical staff to perform sputum suction on the patient without removing the trial blocking device; the provided filter can prevent foreign matter or mosquitoes from entering the tracheal tube, so as to avoid increasing the pain of the patient. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] Attachment Figure 1 It is a schematic diagram of the overall structure of the tracheal cannula test plugging device of the utility model.

[0016] Attachment Figure 2 It is a structural schematic diagram of the pipe blocking component 2 in the present utility model.

[0017] Attachment Figure 3 It is a structural diagram of the pipe blocking cover 3 in the present utility model.

[0018] Attachment Figure 4 It is a schematic diagram of the cross-sectional structure of the tracheal cannula test plugging device of the utility model.

[0019] Attachment Figure 5 3 is a schematic diagram showing the position change of the second vent hole 33 relative to the plurality of first vent holes 23 when the pipe blocking cover 3 is rotated.

[0020] The description of the accompanying drawings is as follows: elastic sleeve 1, hand-held strip 11, hanging ring 12, tube blocking assembly 2, ventilation tube 21, end plate 22, first ventilation hole 23, flange 24, suction side tube 25, closed end cover 26, tube blocking cover 3, top plate 31, annular side plate 32, second ventilation hole 33, filter screen 4. DETAILED DESCRIPTION

[0021] In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the following briefly introduces the drawings required for use in the embodiments or the description of the prior art. Obviously, the drawings described below are only some embodiments of the present invention. For those skilled in the art, other drawings can be obtained based on these drawings without creative work. The following further describes the content of the invention in conjunction with the drawings:

[0022] Example 1

[0023] Refer to the instruction manual Figure 1 、 4 A tracheal tube test plugging device comprises an elastic sleeve 1, a plugging assembly 2 and a plugging cover 3.

[0024] Refer to the instruction manual Figure 2The pipe blocking assembly 2 includes a cylindrical vent pipe 21 and an end plate 22 that closes the top opening of the vent pipe 21. A flange 24 is provided on the edge of the top surface of the vent pipe 21, and three first vent holes 23 with inconsistent apertures are opened on the end plate 22 (for example, the aperture sizes of the three first vent holes 23 with inconsistent apertures can be as follows: the aperture of the largest aperture first vent hole 23 is equal to three-quarters or one-half of the aperture of the inner cavity of the elastic sleeve 1 or the inner sleeve head end, the aperture of the middle aperture first vent hole 23 is equal to half of the aperture of the largest aperture first vent hole 23, and the aperture of the smallest aperture first vent hole 23 is equal to one-quarter of the aperture of the largest aperture first vent hole 23). The centers of the three first vent holes 23 are on the same circumference with the central axis of the vent pipe 21 as the center, and the three first vent holes 23 are arranged counterclockwise in descending order of aperture size).

[0025] Refer to the instruction manual Figure 1 、 4 The elastic sleeve 1 is cylindrical in shape as a whole. The upper part of the elastic sleeve 1 is tightly clamped on the outside of the ventilation pipe 21 to achieve a fixed connection between the elastic sleeve 1 and the pipe blocking assembly 2. The lower part of the elastic sleeve 1 is detachably clamped on the outside of the inner tube head end of the tracheal cannula to achieve a detachable and fixed connection between the elastic sleeve 1 and the tracheal cannula, and is not easy to fall off. At the same time, it is applicable to different types of tracheal cannulas;

[0026] In order to facilitate the installation of the lower part of the elastic sleeve 1 to the outside of the inner tube head end of the tracheal cannula, hand-held strips 11 are symmetrically provided on both sides of the bottom of the elastic sleeve 1. The hand-held strips 11 are integrally formed with the elastic sleeve 1 and are made of elastic rubber material or latex material. Specifically, the installation method is as follows: the medical staff takes a hand-held strip 11 with each hand and pulls it to both sides, pulls open the bottom opening of the elastic sleeve 1 and then puts it on the outside of the inner tube head end of the tracheal cannula; when removing the elastic sleeve 1, the medical staff takes a hand-held strip 11 with each hand and pulls it to both sides, and pulls it vertically upward to separate the bottom of the elastic sleeve 1 from the inner tube head end of the tracheal cannula, or, fixes the tracheal cannula with one hand, holds the tube blocking assembly 2 with the other hand, and applies force in opposite directions with both hands to pull the elastic sleeve 1 off the inner tube head end of the tracheal cannula.

[0027] Refer to the instruction manual Figure 3 The pipe blocking cover 3 includes a circular top plate 31 and an annular side plate 32. The side plate 32 is fixedly mounted on the bottom edge of the top plate 31. The cross section of the side plate 32 is in the shape of a "7". The pipe blocking cover 3 is mounted on the end plate 22 and the outside of the flange 24, so that the pipe blocking cover 3 and the vent pipe 21 share a central axis, limiting the pipe blocking cover 3 to rotate only along the flange 24. A second vent hole 33 is opened on the top plate 31, and the aperture of the second vent hole 33 is greater than or equal to the largest aperture of the first vent hole 23. The center of the second vent hole 33 is on the same circumference as the center of the three first vent holes 23.

[0028] Refer to the attached Figure 5 When the blocking cover 3 rotates counterclockwise along the central axis, the second vent 33 is first connected with the first vent 23 with the largest aperture. At this time, the ventilation volume is the largest. Continue to rotate the blocking cover 3 counterclockwise, and the second vent 33 is connected with the first vent 23 with the middle aperture. At this time, the ventilation volume becomes smaller than before. Continue to rotate the blocking cover 3 counterclockwise, and the second vent 33 is connected with the first vent 23 with the smallest aperture. At this time, the ventilation volume is the smallest. The above is a trial of partial blocking and gradually increasing the blocking area. Continue to rotate the blocking cover 3 counterclockwise, and the second vent 33 is closed. At this time, the tube is fully blocked. Then, you only need to rotate the blocking cover 3 to first try partial blocking and then transition to full blocking. By controlling the ventilation volume, you can slowly help the patient achieve the purpose of spontaneous breathing.

[0029] In order to ensure that the pipe blocking cover 3 is positioned at the specified position after being rotated to the specified position without being subjected to external force, the pipe blocking cover 3 is made of a hard material as a whole, and a rubber pad is fixedly provided on the contact surface between the top plate 31 and the end plate 22 and / or the contact surface between the flange 24 and the side plate 32. The rubber pad increases the friction between the top plate 31 and the end plate 22 and / or the flange 24 and the side plate 32 to locate the position of the pipe blocking cover 3; or, the pipe blocking cover 3 is made of an elastic rubber material as a whole, and the friction between the pipe blocking cover 3 and the end plate 22 and the flange 24 is increased by the elastic force and friction force of the pipe blocking cover 3 to locate the position of the pipe blocking cover 3.

[0030] In order to prevent the elastic sleeve 1 from being separated from the inner tube head end of the tracheal tube when the patient coughs or touches the test tube blocking device in daily life, which may cause the test tube blocking device to accidentally fall off and fall to the ground and be contaminated, a hanging ring 12 is fixedly provided on the side of the elastic sleeve 1. A fixing belt can be fixedly connected (tied) to the hanging ring 12, and the other end of the fixing belt can be fixed (tied) to the belt fixing plate of the tracheal tube or the patient's clothes.

[0031] A trial plugging procedure can be considered when the patient meets the following conditions: 1. The patient's condition is stable; 2. Swallowing and coughing reflexes are present, with no obvious aspiration or choking; 3. No fever or obvious signs of lung infection; 4. When the inspired oxygen concentration (FiO2) is less than 30%, breathing is stable, blood oxygen saturation is maintained above 95%, or blood gas analysis is normal.

[0032] The method of using the tracheal tube test plugging device described in this embodiment is as follows: first rotate the plugging cover 3 to connect the second vent 33 with the first vent 23 with the largest aperture. The medical staff takes a hand-held strip 11 with each hand and pulls it to both sides. After the bottom opening of the elastic sleeve 1 is pulled open, it is put on the outside of the inner tube head of the tracheal tube. The patient is trained to adapt to breathing through the mouth and nose, and the patient's tolerance is continuously observed (observe the changes in the patient's blood oxygen, whether there is choking, dyspnea, wheezing, irritability and hypoxia symptoms, and perform blood gas tests when necessary). If the patient can tolerate it after 12-24 hours and has no special symptoms, the plugging cover 3 is rotated again to connect the second vent 33 with the first vent 23 with the middle aperture, and the patient's tolerance is continuously observed. The patient's tolerance is continuously observed (observe the changes in the patient's blood oxygen, whether there are symptoms of choking, dyspnea, shortness of breath, irritability and hypoxia, and perform a blood gas test if necessary). If the patient can tolerate it after 12-24 hours without any special symptoms, the tube blocking cover 3 is rotated again, and the second vent hole 33 is connected to the first vent hole 23 with the smallest aperture. The patient's tolerance is continuously observed (observe the changes in the patient's blood oxygen, whether there are symptoms of choking, dyspnea, shortness of breath, irritability and hypoxia, and perform a blood gas test if necessary). If the patient can tolerate it after 12-24 hours without any special symptoms, the tube blocking cover 3 is rotated again, and the second vent hole 33 is closed. At this time, the tube is fully blocked. If the full blockage lasts for 24-48 hours and can be tolerated without any special symptoms, extubation can be considered;

[0033] During the process of partial to complete tube blocking, the patient's blood oxygen changes, whether there is choking, dyspnea, wheezing, irritability and hypoxia symptoms should be closely observed, and a blood gas test should be performed if necessary. If the patient has the above symptoms, the tube blocking cover 3 should be rotated immediately to connect the second vent 33 with the first vent 23 with the largest aperture first, or the trial tube blocking device should be directly removed to prevent damage caused by excessive hypoxia.

[0034] Example 2

[0035] During the partial blocking, since the second vent hole 33 is connected to the first vent hole 23, the blocking device and the tube opening of the tracheal tube are in an open state, which can easily cause foreign objects to fall into the tracheal tube, causing breathing difficulties and even endangering the patient's life. In addition, since the secretions in the airway will contaminate the tracheal tube, it is easy to attract mosquitoes, flies and other pathogenic insects to enter the airway through the tracheal tube opening, thereby causing serious respiratory infections, which not only increases the patient's pain, but also increases social medical costs. Therefore,

[0036] Based on Example 1, and with reference to the attached Figure 1 、 24. A filter screen 4 is fixed in the ventilation pipe 21. Under the premise of ensuring normal ventilation, the filter screen 4 can prevent foreign matter or pathogenic insects such as mosquitoes and flies from entering the airway through the tracheal tube port; at the same time, the filter screen 4 can be fixed to the bottom surface of the end plate 22 by gluing.

[0037] Example 3

[0038] During the tracheal tube blocking test, it is often necessary to perform sputum suction on the patient. Since a blocking test device is installed on the outside of the inner tube head of the tracheal tube, and a filter 4 is installed on the blocking test device, the sputum suction catheter cannot be directly inserted from the second vent 33 and the first vent 23. The blocking test device can only be removed to perform the test, which is time-consuming and laborious. Therefore, in order to facilitate the sputum suction operation on the patient,

[0039] Based on Example 1 or 2, refer to the attached Figure 1 、 2 4. An upwardly inclined suction side tube 25 is provided on the side of the ventilation tube 21. The inner cavity of the suction side tube 25 is connected to the inner cavity of the ventilation tube 21. A closed end cap 26 is detachably installed at the other end of the suction side tube 25. A through hole for the suction side tube 25 to pass through is opened in the upper part of the elastic sleeve 1;

[0040] The closed end cap 26 can be made of an elastic rubber material, the inner diameter of the closed end cap 26 is less than or equal to the outer diameter of the suction side tube 25, and the closed end cap 26 is sealingly sleeved on the outside of the suction side tube 25, or the outer diameter of the closed end cap 26 is greater than or equal to the inner diameter of the suction side tube 25, and the closed end cap 26 is sealingly sleeved on the inside of the suction side tube 25; or, the closed end cap 26 can be made of a hard material, and the inner side of the closed end cap 26 and the outer side of the other end of the suction side tube 25 are provided with threads, and the closed end cap 26 is screwed onto the suction side tube 25 through threads.

[0041] When suctioning is required, the closed end cap 26 is removed, and the suction catheter is inserted from the suction side tube 25, and sequentially passes through the inner cavity of the ventilation tube 21, the inner cavity of the elastic sleeve 1, and the inner cavity of the tracheal cannula into the trachea to perform suctioning. After the suctioning operation is completed, the suction catheter is pulled out and the closed end cap 26 is reinstalled on the suction side tube 25.

[0042] Obviously, modifications and / or additions of components can be made to the above-mentioned tracheal tube test plugging device and the corresponding method without departing from the field and scope of the present invention.

[0043] It is also clear that although the present invention has described the tracheal tube test plugging device in detail, those skilled in the art will certainly be able to obtain many other equivalent forms of tracheal tube test plugging devices and corresponding methods. The tracheal tube test plugging device and the corresponding method have the characteristics described in the claims and are therefore within the scope of the protection field defined thereby.

Claims

1. A tracheal tube plugging test device, characterized in that: The invention comprises an elastic sleeve (1), a pipe blocking assembly (2) and a pipe blocking cover (3); the pipe blocking assembly (2) comprises a cylindrical vent pipe (21) and an end plate (22) for closing the top opening of the vent pipe (21); the pipe blocking cover (3) is sleeved on the outside of the top of the vent pipe (21); the pipe blocking cover (3) and the vent pipe (21) share a central axis; The upper portion of the elastic sleeve (1) is clamped onto the outside of the vent tube (21), and the lower portion of the elastic sleeve (1) is detachably clamped onto the outside of the inner tube head of the tracheal tube. At least one first vent hole (23) is provided on the end plate (22), and a second vent hole (33) is provided on the tube blocking cover (3). When the tube blocking cover (3) rotates along the central axis, the first vent hole (23) and the second vent hole (33) are at least partially connected or the first vent hole (23) and the second vent hole (33) are closed, thereby achieving partial or complete tube blocking.

2. The tracheal tube blocking device according to claim 1, characterized in that: Three first ventilation holes (23) are provided, and the apertures of the three first ventilation holes (23) are inconsistent. The aperture of the second ventilation hole (33) is greater than or equal to the first ventilation hole (23) with the largest aperture. The centers of the three first ventilation holes (23) and one second ventilation hole (33) are located on the same circumference with the central axis as the center.

3. The tracheal tube blocking device according to claim 1, characterized in that: The pipe blocking cover (3) comprises a circular top plate (31) and an annular side plate (32); the side plate (32) is fixedly mounted on the bottom edge of the top plate (31); the cross section of the side plate (32) is in the shape of a letter "7"; a flange (24) is provided on the top edge of the vent pipe (21); the pipe blocking cover (3) is mounted on the outside of the end plate (22) and the flange (24) so ​​that the pipe blocking cover (3) can only rotate along the flange (24); and the second vent hole (33) is provided on the top plate (31).

4. The tracheal tube blocking device according to claim 3, characterized in that: A rubber pad is fixedly provided on the contact surface between the top plate (31) and the end plate (22), and / or on the contact surface between the flange (24) and the side plate (32); or the pipe blocking cover (3) is entirely made of elastic rubber material.

5. The tracheal tube blocking device according to claim 1, characterized in that: Handle bars (11) are symmetrically arranged on both sides of the bottom of the elastic sleeve (1).

6. The tracheal tube blocking device according to claim 1, characterized in that: A hanging ring (12) is fixedly provided on the side of the elastic sleeve (1).

7. The tracheal tube blocking device according to claim 1, characterized in that: A sputum suction side tube (25) is provided on the side of the ventilation tube (21), the inner cavity of the sputum suction side tube (25) is connected to the inner cavity of the ventilation tube (21), a closed end cap (26) is detachably installed on the other end of the sputum suction side tube (25), and a through hole for the sputum suction side tube (25) to pass through is opened on the upper part of the elastic sleeve (1).

8. The tracheal tube blocking device according to claim 1, characterized in that: A filter screen (4) is fixedly arranged in the ventilation pipe (21).

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