Tracheal tube with easy replacement of inner tube

Abstract

The utility model relates to medical equipment technical field discloses a tracheal cannula convenient to replace inner tube, limiting component, inner tube and joint assembly, limiting component includes limiting capsule and filling pipe, limiting capsule includes inner wall and outer wall, and the gas outlet end of filling pipe is through the bottom wall of limiting capsule and is linked with limiting capsule, and the gas inlet end of filling pipe is located in the extracorporal space of patient, one end of inner tube is inserted from the one end of limiting capsule close to the extracorporal space of patient, and the outer tube wall of inner tube is pasted with the inner wall of limiting capsule, the joint part of joint assembly is set up in the one end of inner tube inserted into limiting capsule, and the fixed end of joint assembly is set up on the inner wall of limiting capsule, and inner tube is jointed with limiting capsule, so that after inner tube and limiting capsule are unjointed and are pulled out, limiting capsule can keep the position in the trachea of patient to facilitate the reinstallation of inner tube, thereby solve the problem that the tracheal cannula technique is difficult to reinsert the tube after pulling out in prior art, and the preparation time is long.

Description

Technical Field

[0001] This utility model relates to the field of medical equipment technology, and in particular to an endotracheal tube with an inner tube that is easy to replace. Background Technology

[0002] In the ICU, endotracheal intubation is an important means of maintaining the breathing of critically ill patients. By inserting a specially designed endotracheal tube through the mouth or nose and through the glottis into the trachea or bronchus, it provides the best conditions for airway patency, ventilation and oxygen supply, and airway suction. It is an important measure to rescue patients with respiratory dysfunction.

[0003] However, if the endotracheal intubation time is too long, it can lead to excessive sputum mixed with blood clots in the patient's trachea. These foreign objects can block the trachea and also breed a large number of pathogens. However, the risk of re-intubation after extubation is also the main concern of ICU doctors when assessing the timing of extubation. The existing endotracheal intubation technology is difficult to re-intubate after extubation and the preparation time is long, which increases the risk of complications for patients. Utility Model Content

[0004] To address the shortcomings of existing technologies, this utility model provides a convenient endotracheal tube with an inner tube that allows for easy replacement. This solves the problems of difficulty in re-intubation and long preparation time after extubation in existing endotracheal intubation techniques.

[0005] To solve the above-mentioned technical problems, this utility model provides an endotracheal tube with a convenient inner tube replacement method, the endotracheal tube comprising:

[0006] A limiting assembly, comprising a limiting bladder and a filling tube, the limiting bladder comprising an inner wall for maintaining shape and an outer wall for extending toward the tracheal wall, the air outlet of the filling tube penetrating through the bottom wall of the limiting bladder and communicating with the limiting bladder, and the air inlet of the filling tube located in the patient's external space.

[0007] An inner tube, one end of which extends into the external space of the limiting sac near the patient, and the outer wall of the inner tube is in contact with the inner wall of the limiting sac;

[0008] A snap-fit ​​assembly is provided, wherein the snap-fit ​​part of the snap-fit ​​assembly is provided at one end of the inner tube that extends into the limiting bladder, and the fixed end of the snap-fit ​​assembly is provided on the inner wall of the limiting bladder, and the inner tube is snap-fitted to the limiting bladder.

[0009] As an optional solution, the endotracheal tube may also include a drug delivery bag and a drug delivery tube;

[0010] The drug delivery bag is disposed on the outer wall of the limiting bag, and the side wall of the drug delivery bag near the tracheal wall has several drug delivery holes.

[0011] The drug delivery tube is located inside the filling tube, with the inlet end of the drug delivery tube extending out of the filling tube and communicating with the patient's external space, and the outlet end of the drug delivery tube extending out of the filling tube and communicating with the drug delivery capsule.

[0012] As an optional solution, the endotracheal tube may also include an air bag and an inflation tube;

[0013] The airbag is positioned at one end of the limiting bladder body in the external space away from the patient, and the outer wall of the airbag extends until it fits against the tracheal wall.

[0014] The inflation tube is located inside the filling tube. The air inlet end of the inflation tube extends out of the filling tube and communicates with the patient's external space. The air outlet end of the inflation tube extends out of the filling tube and penetrates the bottom wall of the limiting bladder. The air outlet end of the inflation tube communicates with the air bladder.

[0015] As an optional solution, the inner tube is provided with a device interface at one end located in the patient's external space, and the device interface is connected to the oxygen supply device.

[0016] As an optional solution, the snap-fit ​​assembly includes several blocking blocks and snap-fit ​​connectors;

[0017] The inner wall of the limiting bladder is provided with a snap-fit ​​groove. The outline of the snap-fit ​​groove is arranged along the circumferential shape of the inner wall of the limiting bladder. The groove wall is located between the outer boundary and the inner boundary of the limiting bladder along its length direction. The snap-fit ​​groove includes a placement section and a fixing section. The groove wall of the fixing section is provided with a plurality of blocking blocks along the circumference of the limiting bladder, and gaps are left between the plurality of blocking blocks.

[0018] The snap-fit ​​connector is located at one end of the inner tube that extends into the limiting bladder. The snap-fit ​​connector extends from the fixing section into the placement section and engages with the snap-fit ​​groove.

[0019] Alternatively, the top surfaces of several of the blocking blocks may be flat.

[0020] The snap-fit ​​connector is located at one end of the inner tube that extends into the limiting bladder. The snap-fit ​​connector extends into the fixing section from the gap between the several blocking blocks and engages with the snap-fit ​​groove.

[0021] Alternatively, the top surfaces of several of the blocking blocks may be flat.

[0022] After the connector extends into the placement section, the bottom surface of the connector is in contact with the top surface of the blocking block, and the side wall of the connector is in contact with the groove wall of the placement section.

[0023] As an optional solution, when the limiting bladder is engaged with the inner tube, the distance between two adjacent blocking blocks is equal.

[0024] Compared with the prior art, the endotracheal tube of this utility model, which facilitates the replacement of the inner tube, has the following advantages: the inner tube with a snap-fit ​​component snap-fit ​​end is snapped together with the limiting bladder with a snap-fit ​​component fixing end. A filling cavity is provided between the outer tube wall and the inner tube wall of the limiting bladder. The filling cavity is filled with fluid, which causes the outer tube wall of the limiting bladder to expand towards the tracheal wall. Thus, the endotracheal tube of this application can be removed only when the inner tube is removed during extubation. The limiting bladder expands through its outer tube wall to remain in the trachea, facilitating re-intubation by medical staff. This solves the problem of the difficulty and long preparation time of re-intubation after extubation in the prior art. Attached Figure Description

[0025] Figure 1 This is an overall schematic diagram of the present invention;

[0026] Figure 2 This is an installation diagram of this utility model;

[0027] Figure 3 This is an internal view of the present invention;

[0028] Figure 4 This is a partial sectional view of the present invention;

[0029] Figure 5 This utility model is in Figure 4 A magnified view of a section at point A;

[0030] Figure 6 This is a partially enlarged view of the snap-fit ​​connector of this utility model;

[0031] Figure 7 This is a partial sectional view of the present invention at the snap-fit ​​groove position.

[0032] Figure 8 This is a schematic diagram of the interior of the filling tube of this utility model.

[0033] In the diagram, 1 is the limiting component; 101 is the limiting bladder; 1011 is the snap-fit ​​groove; 1011a is the placement section; 1011b is the fixing section; 102 is the filling tube; 2 is the inner tube; 3 is the snap-fit ​​component; 301 is the snap-fit ​​connector; 3011 is the boss; 3012 is the protrusion; 302 is the blocking block; 4 is the drug delivery bladder; 401 is the drug delivery port; 5 is the drug delivery tube; 6 is the air bladder; 7 is the inflation tube; 8 is the device interface; and 9 is the guide wire. Detailed Implementation

[0034] The specific embodiments of this utility model will be described in further detail below with reference to the accompanying drawings and examples. The following examples are used to illustrate this utility model, but are not intended to limit its scope.

[0035] like Figures 1 to 6 As shown, this utility model provides an endotracheal tube that facilitates the replacement of the inner tube 2, including: a limiting component 1, an inner tube 2, and a snap-fit ​​component 3.

[0036] The limiting component 1 includes a limiting bladder 101 and a filling tube 102. The limiting bladder 101 includes an inner wall for maintaining its shape and an outer wall for extending towards the tracheal wall. The limiting bladder 101 is tubular after expansion. The air outlet of the filling tube 102 penetrates the bottom wall of the limiting bladder 101 and communicates with the limiting bladder 101. The air inlet of the filling tube 102 is located in the patient's external space. The filling tube 102 is filled with fluid so that the outer wall of the limiting bladder 101 extends towards the tracheal wall.

[0037] The inner tube 2 is a specially designed tube for supplying air to the patient. The inner tube 2 is located in the patient's airway. One end of the inner tube 2 extends into the external space of the limiting bag 101 near the patient. The outer wall of the inner tube 2 fits against the inner wall of the limiting bag 101. The outline of the outer wall of the inner tube 2 is consistent with the outline of the inner wall of the limiting bag 101. A guide wire 9 is inserted into the inner tube 2 to guide the inner tube 2 forward in the patient's airway. The diameter of the inner tube 2 is much larger than the radius of the guide wire 9. The inner tube 2 is not made of rigid material so that it can bend in the patient's trachea.

[0038] The snap-fit ​​part of the snap-fit ​​component 3 is located at one end of the inner tube 2 that extends into the limiting sac 101. The fixed end of the snap-fit ​​component 3 is located on the inner wall of the limiting sac 101. The length of the limiting sac 101 is less than the length of the inner tube 2. The limiting sac 101 is located inside the patient's trachea. One end of the inner tube 2 that extends into the limiting sac 101 is snapped into the limiting sac 101 by the snap-fit ​​component 3.

[0039] Based on this, the limiting bladder 101 in the limiting assembly 1 is snapped into the inner tube 2 by the snap-fit ​​assembly 3. After the limiting bladder 101 is filled with fluid through the filling tube 102, the outer wall of the limiting bladder 101 expands. At this time, after the inner tube 2 is released from the snap-fit ​​between the limiting bladder 101 and the inner tube 2 is pulled out, the limiting bladder 101 can maintain its position in the patient's trachea to facilitate the reinstallation of the inner tube 2. This solves the problem of the difficulty of re-intubation and the long preparation time in the prior art after extubation in endotracheal intubation.

[0040] Furthermore, such as Figures 1 to 6 As shown, the endotracheal tube also includes a drug delivery bag 4 and a drug delivery tube 5;

[0041] The drug delivery sac 4 is disposed on the outer wall of the limiting sac 101, and a plurality of drug delivery holes 401 are opened through the side wall of the drug delivery sac 4 near the tracheal wall. The plurality of drug delivery holes 401 are evenly distributed on the side wall of the drug delivery sac 4. The aperture of the drug delivery holes 401 is not further limited here. When the aperture of the drug delivery holes 401 is small, the drug delivery sac 4 can be filled with liquid medicine in advance. At this time, due to the surface tension, the liquid medicine in the drug delivery sac 4 can naturally remain in the drug delivery sac 4 without external force, so that the liquid medicine contacts the side wall of the drug delivery sac 4. The medication is released only after reaching the tracheal wall and being further compressed, allowing the medication sac 4 to deliver medication to the tracheal wall at a slow flow rate. When the diameter of the medication port 401 is large, the timing of medication delivery by the medication sac 4 can be synchronized with the timing of filling the medication. Since the medication is continuously accelerated by gravity during its flow into the sac body of the medication sac 4, the medication flowing out of the medication port 401 has a certain initial velocity. At this time, the side wall of the medication sac 4 can deliver medication without adhering to the tracheal wall, thereby enabling precise control of the timing and amount of medication delivery by the medication sac 4.

[0042] The administration tube 5 is located inside the filling tube 102. The arrangement of the administration tube 5 is not further limited here. The administration tube 5 can be wrapped around the wall of the filling tube 102 to avoid damaging the tube body of the filling tube 102. The administration tube 5 can also be placed inside the tube body of the filling tube 102 to reduce the volume of the filling tube 102.

[0043] The inlet end of the drug delivery tube 5 extends out of the filling tube 102 and communicates with the patient's external space. The outlet end of the drug delivery tube 5 extends out of the filling tube 102 and communicates with the drug delivery bag 4. When the outer wall of the limiting bag 101 extends towards the tracheal wall, the drug delivery bag 4 will move and be squeezed. The drug liquid in the drug delivery bag 4 flows towards the tracheal wall through the drug delivery hole 401, thereby completing the timely drug delivery to the tracheal wall.

[0044] Furthermore, such as Figures 1 to 6 As shown, the endotracheal tube also includes an air bag 6 and an inflation tube 7;

[0045] The airbag 6 is disposed at one end of the limiting bag 101 in the external space away from the patient, and the outer tube wall of the airbag 6 extends until it fits against the tracheal wall.

[0046] The inflation tube 7 is located inside the filling tube 102, and the configuration of the inflation tube 7 is the same as that of the drug delivery tube 5.

[0047] The air inlet of the inflation tube 7 extends out of the filling tube 102 and communicates with the patient's external space. The air outlet of the inflation tube 7 extends out of the filling tube 102 and passes through the bottom wall of the limiting bladder 101. The air outlet of the inflation tube 7 communicates with the airbag 6. The airbag 6 can provide fixation for the endotracheal tube when the limiting bladder 101 is not inflated, so as to avoid long-term compression of a large area of ​​the tracheal wall by the long limiting bladder 101, which may cause inflammation.

[0048] Furthermore, such as Figures 1 to 3 As shown, the inner tube 2 is provided with a device interface 8 at one end of the patient's external space. The device interface 8 is connected to the oxygen supply device. The specific connection method of the device interface 8 is not further limited here. The device interface 8 can be adapted to medical oxygen supply devices on the market. The device interface 8 can connect to the oxygen supply device when necessary to provide emergency oxygen supply to the patient.

[0049] Furthermore, such as Figures 1 to 6 As shown, the snap-fit ​​assembly 3 includes a plurality of blocking blocks 302 and snap-fit ​​connectors 301;

[0050] The inner wall of the limiting bladder 101 is provided with a snap-fit ​​groove 1011. The outline of the snap-fit ​​groove 1011 is arranged along the circumference of the inner wall of the limiting bladder 101. The groove wall of the snap-fit ​​groove 1011 is located between the outer boundary and the inner boundary of the projection of the limiting bladder 101 along its length direction. The snap-fit ​​groove 1011 includes a placement section 1011a and a fixing section 1011b. The groove wall of the fixing section 1011b is provided with a plurality of blocking blocks 302 along the circumference of the limiting bladder 101. There are gaps between the plurality of blocking blocks 302.

[0051] The snap-fit ​​connector 301 is disposed at one end of the inner tube 2 that extends into the limiting bladder 101. The snap-fit ​​connector 301 includes a boss 3011 and a plurality of protrusions 3012. The boss 3011 extends from the end of the inner tube 2 where the snap-fit ​​connector 301 is disposed. The outer contour of the boss 3011 is located between the outer contour and the inner contour of the inner tube 2, and the inner contour of the boss 3011 coincides with the inner contour of the inner tube 2. The plurality of protrusions 3012 are disposed on the boss 301. On the side wall of 1, the position of the protrusion 3012 corresponds to the position of the blocking block 302, so that the protrusion 3012 can pass through the gap between the blocking blocks 302. After the snap connector 301 is rotated at a certain angle, the bottom end face of the protrusion 3012 abuts against the top end face of the blocking block 302, so that the snap connector 301 can extend from the fixed section 1011b into the placement section 1011a and engage with the snap groove 1011.

[0052] Furthermore, such as Figures 3 to 5As shown, the top surfaces of several of the blocking blocks 302 are flat;

[0053] After the snap-fit ​​connector 301 extends into the placement section 1011a, the bottom end face of the snap-fit ​​connector 301 is in contact with the top end face of the blocking block 302, and the side wall of the snap-fit ​​connector 301 is in contact with the groove wall of the placement section 1011a. At this time, the contour of the side wall of the snap-fit ​​connector 301 is the same as the contour of the groove wall of the snap-fit ​​groove 1011, and the thickness of the snap-fit ​​connector 301 is the same as the thickness of the placement section 1011a, so that the snap-fit ​​connector 301 and the placement section 1011a are perfectly matched, thereby avoiding axial movement of the inner tube 2 in the limiting bladder 101 due to accidental factors.

[0054] Furthermore, such as Figures 3 to 5 As shown, when the limiting bladder 101 is engaged with the inner tube 2, the side end face of the blocking block 302 away from the groove wall of the engaging groove 1011 is in contact with the protrusion 3011 of the engaging connector 301. At this time, the distance between the side wall of the blocking block 302 away from the groove wall of the engaging groove 1011 and the groove wall of the engaging groove 1011 is 'a'. The outer contour of the engaging groove 1011 along the length direction of the limiting bladder 101 and the inner boundary of the projection of the limiting bladder 101 along its length direction are... The distance is b, a = b, the inner contour of the shape formed by the plurality of blocking blocks 302 is similar to the outer contour of the inner tube 2, the outer contour of the shape formed by the plurality of blocking blocks 302 is similar to the contour of the groove wall of the snap-fit ​​groove 1011, and the distance between two adjacent blocking blocks 302 is equal, so that the inner tube 2 is located in the middle of the shape formed by the plurality of blocking blocks 302 to avoid the lateral shaking of the inner tube 2 caused by external factors, thereby ensuring the snap-fit ​​firmness between the inner tube 2 and the limiting bladder 101.

[0055] The working process of this utility model is as follows: One end of the inner tube 2 with the mounting clip 301 extends into the limiting bag 101. The clip 301 on the inner tube 2 enters the placement section 1011a of the locking groove 1011 through the fixing section 1011b of the locking groove 1011. The inner tube 2 is rotated so that the clip 301 engages with the locking groove 1011. Then, guided by the guide wire 9, the inner tube 2 is inserted into the designated position in the patient's airway. At this time, the inflation tube 7 is used to... The cuff 6 is inflated to secure the endotracheal tube. When extubation is required, the cuff 6 is deflated, and the filling tube 102 fills the limiting cuff 101 with fluid to expand the outer wall of the limiting cuff 101. After rotating the inner tube 2 to release the jamming state, the inner tube 2 is pulled out. When re-intubation is required, the above steps of inserting the inner tube 2 are repeated. When it is determined that re-intubation is not required, the fluid in the limiting cuff 101 is drained and the limiting cuff 101 is pulled out of the patient's airway to end the respiratory support measures for critically ill patients.

[0056] In summary, this utility model provides a convenient endotracheal tube for replacing the inner tube 2. The endotracheal tube has a locking connector 301 on the inner tube 2 used for assisting exhalation, and a limiting component 1 that can engage with the locking connector 301. The limiting pouch 101 of the limiting component 1, which engages with the locking connector 301, can be fixed in the trachea after extending its outer wall, so that the removal of the inner tube 2 will not affect the position of the limiting pouch 101 in the trachea. When a second intubation is required, the inner tube 2 can be directly engaged with the limiting pouch 101, thereby solving the problem of the difficulty and long preparation time of re-intubation after extubation in the prior art.

[0057] The above description is only a preferred embodiment of this application. It should be noted that for those skilled in the art, several improvements and substitutions can be made without departing from the technical principles of this application, and these improvements and substitutions should also be considered within the scope of protection of this application.

Claims

1. A convenient endotracheal tube with a replaceable inner tube, characterized in that, The endotracheal tube includes: A limiting assembly, comprising a limiting bladder and a filling tube, the limiting bladder comprising an inner wall for maintaining shape and an outer wall for extending toward the tracheal wall, the air outlet of the filling tube penetrating through the bottom wall of the limiting bladder and communicating with the limiting bladder, and the air inlet of the filling tube located in the patient's external space. An inner tube, one end of which extends into the external space of the limiting sac near the patient, and the outer wall of the inner tube is in contact with the inner wall of the limiting sac; A snap-fit ​​assembly is provided, wherein the snap-fit ​​part of the snap-fit ​​assembly is provided at one end of the inner tube that extends into the limiting bladder, and the fixed end of the snap-fit ​​assembly is provided on the inner wall of the limiting bladder, and the inner tube is snap-fitted to the limiting bladder.

2. The endotracheal tube with convenient inner tube replacement according to claim 1, characterized in that, The endotracheal tube also includes a drug delivery bag and a drug delivery tube; The drug delivery bag is disposed on the outer wall of the limiting bag, and the side wall of the drug delivery bag near the tracheal wall has several drug delivery holes. The drug delivery tube is located inside the filling tube, with the inlet end of the drug delivery tube extending out of the filling tube and communicating with the patient's external space, and the outlet end of the drug delivery tube extending out of the filling tube and communicating with the drug delivery capsule.

3. The endotracheal tube with convenient inner tube replacement according to claim 1, characterized in that, The endotracheal tube also includes an air bag and an inflation tube; The airbag is positioned at one end of the limiting bladder body in the external space away from the patient, and the outer wall of the airbag extends until it fits against the tracheal wall. The inflation tube is located inside the filling tube. The air inlet end of the inflation tube extends out of the filling tube and communicates with the patient's external space. The air outlet end of the inflation tube extends out of the filling tube and penetrates the bottom wall of the limiting bladder. The air outlet end of the inflation tube communicates with the air bladder.

4. The endotracheal tube with convenient inner tube replacement according to claim 1, characterized in that, The inner tube is located at one end of the patient's external space and has a device interface that is connected to the oxygen supply device.

5. The endotracheal tube with convenient inner tube replacement according to claim 1, characterized in that, The snap-fit ​​assembly includes several blocking blocks and snap-fit ​​connectors; The inner wall of the limiting bladder is provided with a snap-fit ​​groove. The outline of the snap-fit ​​groove is arranged along the circumference of the inner wall of the limiting bladder. The groove wall is located between the outer boundary and the inner boundary of the limiting bladder along its length direction. The snap-fit ​​groove includes a placement section and a fixing section. The groove wall of the fixing section is provided with a plurality of blocking blocks along the circumference of the limiting bladder, and gaps are left between the plurality of blocking blocks. The snap-fit ​​connector is located at one end of the inner tube that extends into the limiting bladder. The snap-fit ​​connector extends into the fixing section from the gap between the several blocking blocks and engages with the snap-fit ​​groove.

6. The endotracheal tube with convenient inner tube replacement according to claim 5, characterized in that, The top surfaces of several of the aforementioned blocking blocks are flat; After the connector extends into the placement section, the bottom surface of the connector is in contact with the top surface of the blocking block, and the side wall of the connector is in contact with the groove wall of the placement section.

7. The endotracheal tube with convenient inner tube replacement according to claim 5, characterized in that, When the limiting bladder is engaged with the inner tube, the distance between two adjacent blocking blocks is equal.

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