Tool for dipping coating on surface of trachea cannula

Abstract

The utility model discloses a tool for dipping a coating on the surface of a trachea cannula. The tool comprises an air inflation and suction device, a one-way valve assembly, a first quick-insertion plug, a supporting rod, a second quick-insertion plug, a sealing piece and an air bag. Cavities are formed in the first quick-insertion plug, the supporting rod, the second quick-insertion plug and the sealing piece, so that the air bag can be conveniently inflated / deflated by the air inflation and deflation device, and the air bag can be attached to / separated from the inner wall of the trachea cannula; the outer diameter of the supporting rod is matched with the inner diameter of the trachea cannula; when the surface of the trachea cannula is impregnated with a coating, the tool is inserted into the trachea cannula from the end, with the air bag, of the supporting rod till a certain gap is reserved between the air bag and a Murphy hole of the trachea cannula, and an air chamber is formed at the front end of the air bag. The coating liquid can be prevented from entering the inner cavity of the trachea cannula through the surface tension of the coating liquid and the pressure of air in the trachea cannula, and the coating device has the advantages of being convenient to operate, high in production efficiency, capable of reducing the possibility of polluting the coating liquid and capable of saving cost.

Description

Technical Field

[0001] This utility model relates to the field of medical device technology, specifically a tool for impregnating the surface of endotracheal tubes with a coating. Background Technology

[0002] Endotracheal intubation is a specially designed endotracheal tube inserted through the mouth or nose, via the glottis, into the trachea or bronchus to maintain a difficult airway. Endotracheal intubation provides optimal conditions for maintaining a patent airway, ventilation and oxygenation, and airway suction, and is an important measure for rescuing patients with respiratory dysfunction.

[0003] Traditional endotracheal intubation involves applying silicone oil or other substances to the surface of the tube to reduce damage to the patient during intubation. However, the procedure is cumbersome and time-consuming. Postoperative pharyngeal complications are common, with an incidence rate of 14.4%-73.9%. Prolonged airway management is a critical illness, and airway-related complications account for 61% of deaths or brain injuries among patients.

[0004] Chinese patent CN 218167638 U discloses a coating fixture, including a lead weight and a fastener. The lead weight has a blind hole extending axially along the lead weight to accommodate a portion of the tubing to be coated. The fastener is sleeved on the outer surface of the tubing to be coated and fixed within the blind hole; alternatively, the fastener is arranged radially along the lead weight and abuts against the tubing to be coated. This fixture uses a plug to seal the inner cavity of the endotracheal tube, thereby preventing the coating liquid from entering the inner cavity. However, it still has the following shortcomings:

[0005] (1) The plug used must be slightly larger than the inner diameter of the endotracheal tube in order to effectively seal the inner cavity of the endotracheal tube, which is inconvenient to install.

[0006] (2) Immersing the plug in the coating liquid will cause the coating liquid to be contaminated. Therefore, the plug needs to be replaced for each product produced. The plug is a disposable consumable and cannot be reused.

[0007] Therefore, it is necessary to develop a tooling for impregnating the surface of endotracheal tubes with coatings, which has the advantages of easy operation, high production efficiency, reduced possibility of contaminating the coating liquid, and cost savings. Utility Model Content

[0008] To address the shortcomings of existing technologies, the purpose of this invention is to provide a tooling for impregnating and coating the surface of endotracheal tubes. This invention is a coating tooling designed according to the impregnation coating process, utilizing the surface tension of the coating liquid and the air pressure inside the endotracheal tube to prevent the coating liquid from entering the inner cavity of the endotracheal tube. It can replace the current method of using external plugs to seal the inner cavity of the endotracheal tube, thus preventing the coating liquid from entering the inner cavity. Furthermore, it has the advantages of convenient operation, high production efficiency, reduced possibility of coating liquid contamination, and cost savings.

[0009] To achieve the above objectives, the present invention adopts the following technical solution:

[0010] A tooling for impregnating the surface of an endotracheal tube with a coating includes an inflation / inhalation device, a one-way valve assembly, a first quick-connect plug, a support rod, a second quick-connect plug, a seal, and an air bladder. The top of the one-way valve assembly is connected to the inflation / inhalation device, and the bottom is connected to the top of the first quick-connect plug. The top of the support rod is connected to the bottom of the first quick-connect plug, and the bottom is connected to the second quick-connect plug. The seal connects the second quick-connect plug and the air bladder. The first quick-connect plug, the support rod, the second quick-connect plug, and the seal all have cavities inside to facilitate the inflation / inhalation device inflating / inhaling the air bladder to make it fit / separate from the inner wall of the endotracheal tube. The outer diameter of the support rod matches the inner diameter of the endotracheal tube.

[0011] When the endotracheal tube surface is impregnated with a coating, the tooling is inserted into the endotracheal tube by the end of the support rod with the air bladder until a certain gap is left between the air bladder and the Murphy orifice of the endotracheal tube to form an air chamber at the front end of the air bladder.

[0012] Preferably, the distance between the cuff and the Murphy orifice of the endotracheal tube is 5-10 mm.

[0013] Preferably, the upper part of the support rod is provided with a positioning step.

[0014] Preferably, the endotracheal tube is fixed by an endotracheal tube end connector.

[0015] Preferably, the endotracheal tube machine end connector includes a support plate, and a through hole, a snap-fit ​​part, and an endotracheal tube fixing part disposed on the support plate; the through hole is used to accommodate the portion below the positioning step of the support rod; the snap-fit ​​part is used to snap the positioning step of the support rod; the endotracheal tube fixing part is an inverted frustum structure for fixing endotracheal tubes of different inner diameters.

[0016] Preferably, the portion below the positioning step of the support rod is configured with a matching outer diameter of the support rod according to the different inner diameters of the endotracheal tubes.

[0017] Preferably, the inflation / inhalation device is a syringe or an air pump.

[0018] Preferably, the one-way valve assembly includes an indicator, a housing, an air vent, a sealing gasket, a cross guide rod, and a spring; the air vent is disposed inside the housing; the cross guide rod includes an upward vertical rod, a downward vertical rod, and a horizontal rod; the upward vertical rod passes through the air vent upwards, and the indicator is fixed to the top of the upward vertical rod; the horizontal rod abuts against the bottom of the air vent, and the sealing gasket is disposed between the air vent and the horizontal rod; the spring is sleeved on the downward vertical rod.

[0019] Preferably, the first quick-connect plug has a step that abuts against the spring and a hole that accommodates the vertical rod.

[0020] Preferably, a gap is left between the vertical rod and the air hole, and a gap is left between the vertical rod and the hole to facilitate the passage of gas.

[0021] The working principle of this utility model is as follows:

[0022] (1) Select a support rod that matches the inner diameter of the endotracheal tube to be processed, and assemble it to form the tooling of this utility model.

[0023] (2) Insert the tooling into the endotracheal cannula to be processed from the end of the support rod with the air bladder until a certain gap is left between the air bladder and the Murphy orifice of the endotracheal cannula to form an air chamber at the front end of the air bladder. The air chamber is formed between the air bladder and the coating liquid by the air pressure in the inner cavity of the endotracheal cannula, ensuring that the coating liquid does not enter the inner cavity of the endotracheal cannula and does not come into contact with the air bladder, thus preventing contamination.

[0024] (3) Using an inflation / injection device, such as a syringe, insert it into the top of the one-way valve assembly of the coating fixture, push open the guide rod of the one-way valve, open the sealing ring, and inject gas into the air bladder. The injected gas passes sequentially through the first quick-connect plug, the support rod, the second quick-connect plug, and the seal into the air bladder, inflating it so that the air bladder completely adheres to the inner wall of the endotracheal tube. After the gas injection is complete, release or remove the inflation / injection device. The internal spring of the one-way valve will rebound and press the sealing ring against the air hole to seal it, preventing the gas inside the air bladder from leaking.

[0025] (4) Install the tooling on the immersion coating equipment and begin immersion coating. During immersion coating, the gas at the front end of the airbag cannot pass through the inner wall of the endotracheal tube and forms an air chamber at the front end of the airbag on the inner wall, so that the coating liquid will not enter the inner cavity of the endotracheal tube during the immersion process, and the coating liquid cannot come into contact with the coating tooling.

[0026] (5) After the coating is completed, use the air inlet device to open the guide rod of the one-way valve, open the sealing ring, release the gas inside the airbag or draw out the gas inside the airbag, so that the airbag is separated from the inner wall of the endotracheal tube, and the tool of this utility model is pulled out from the endotracheal tube.

[0027] (6) Continue the repeated production and use of the product according to the above steps (1)-(5).

[0028] Compared with the prior art, the beneficial effects of this utility model are as follows:

[0029] Compared with existing impregnation coating fixtures that use plugs to seal the inner cavity of endotracheal tubes, this utility model is simpler in structure, more convenient to operate, easier to switch models, and can better guarantee coating thickness and surface smoothness. The product will not produce stringing due to the properties of the coating material after coating.

[0030] Compared with existing impregnation coating fixtures that use plugs to seal the inner cavity of endotracheal tubes, this utility model reduces the possibility of plugs contaminating the coating liquid, reduces the amount of plugs used, and saves production consumable costs.

[0031] Compared with existing impregnation and coating tooling, this utility model uses a plug to seal the inner cavity of the endotracheal tube, which reduces the production cycle of a single product, improves production efficiency, ensures controllable product quality and good consistency, and achieves the effect of saving costs. Attached Figure Description

[0032] Figure 1 This is a schematic diagram of the structure of a tooling for impregnating the surface of an endotracheal tube with a coating according to the present invention;

[0033] Figure 2 This is a partially exploded schematic diagram of a tooling for impregnating the surface of an endotracheal tube with a coating, according to the present invention.

[0034] Figure 3 This is a schematic diagram of the connection structure between the support rod and the end connector of the endotracheal intubation machine in this utility model;

[0035] Figure 4 This is a schematic diagram of the connection structure of the second quick-connect plug, the seal, and the airbag in this utility model;

[0036] Figure 5 This is a schematic diagram of the one-way valve assembly in this utility model;

[0037] Figure 6 This is a schematic diagram of the tooling for inserting a tracheal cannula (in the process of insertion) according to this utility model;

[0038] Figure 7 This is a schematic diagram of the structure of the tooling of this utility model for inserting a tracheal tube (with the airbag not inflated after insertion);

[0039] Figure 8 This is a schematic diagram of the structure of the tooling for inserting a tracheal cannula (inflating the airbag after insertion);

[0040] Figure 9 This is a schematic diagram of the structure of the tooling impregnation coating of this utility model. Detailed Implementation

[0041] The present invention will be further described below with reference to specific embodiments.

[0042] See Figure 1-9 A tooling for impregnating the surface of an endotracheal tube with a coating includes an inflation / inhalation device 1, a one-way valve assembly 2, a first quick-connect plug 3, a support rod 4, a second quick-connect plug 5, a seal 6, and an air bladder 7. The top of the one-way valve assembly 2 is connected to the inflation / inhalation device 1, and the bottom is connected to the top of the first quick-connect plug 3. The top of the support rod 4 is connected to the bottom of the first quick-connect plug 3, and the bottom is connected to the second quick-connect plug 5. The seal 6 connects the second quick-connect plug 5 and the air bladder 7. The first quick-connect plug 3, the support rod 4, the second quick-connect plug 5, and the seal 6 all have cavities inside, facilitating the inflation / inhalation device 1 to inflate / inhale the air bladder 7, causing it to fit / separate from the inner wall of the endotracheal tube 8. The outer diameter of the support rod 4 matches the inner diameter of the endotracheal tube 8.

[0043] When the endotracheal tube surface is coated, the tooling in this embodiment is inserted into the endotracheal tube 8 by the end of the support rod 4 with the air bag 7 until a certain gap is left between the air bag 7 and the Murphy hole 9 of the endotracheal tube 8 to form an air chamber 10 at the front end of the air bag 7.

[0044] In some embodiments, the distance H between the airbag 7 and the Murphy orifice 9 of the endotracheal tube 8 is 5-10 mm, such as... Figure 7 As shown.

[0045] In some embodiments, the support rod 4 is provided with a positioning step 11 on its upper part. The endotracheal tube 8 is fixed by the endotracheal tube machine end connector 12.

[0046] like Figure 3 As shown, the endotracheal tube machine connector 12 includes a support plate 13, and a through hole 14, a snap-fit ​​part 15, and an endotracheal tube fixing part 16 disposed on the support plate 13. The through hole 14 is used to accommodate the portion below the positioning step 11 of the support rod. The snap-fit ​​part 15 is used to snap the positioning step 11 of the support rod 4. The endotracheal tube fixing part 16 is an inverted frustum structure used to fix endotracheal tubes of different inner diameters. The portion below the positioning step 11 of the support rod is provided with a matching outer diameter of the support rod according to the different inner diameters of the endotracheal tubes.

[0047] In some embodiments, the air inhalation device 1 is a syringe or an air pump.

[0048] In some embodiments, such as Figure 5As shown, the one-way valve assembly 2 includes an indicator 17, a housing 18, an air vent 19, a sealing gasket 20, a cross guide rod, and a spring 21. The air vent 19 is located inside the housing 18. The cross guide rod includes an upward vertical rod 22, a downward vertical rod 23, and a horizontal rod 24. The upward vertical rod 22 passes upward through the air vent 19, and the indicator 17 is fixed to the top of the upward vertical rod 22. The horizontal rod 24 abuts against the bottom of the air vent 19. The sealing gasket 20 is located between the air vent 19 and the horizontal rod 24. The spring 21 is sleeved on the downward vertical rod 23. Under the force of the spring 21, the sealing gasket 20 seals the air vent 19, and the one-way valve assembly is closed. When the cross guide rod is pushed open, the sealing gasket 20 releases the air vent 19, the one-way valve assembly opens, and gas can enter and exit the one-way valve assembly.

[0049] The first quick-connect plug 3 is provided with a step 25 for abutting the spring 21 and a hole 26 for accommodating the vertical rod 23.

[0050] A gap is left between the vertical rod 22 and the air hole 19, and a gap is left between the vertical rod 23 and the hole 26 to facilitate the passage of gas.

[0051] The working principle of this utility model is as follows:

[0052] (1) Select a support rod that matches the inner diameter of the endotracheal tube to be processed, and assemble them to form the tooling of this utility model, such as... Figure 1 As shown.

[0053] (2) Insert the tooling into the endotracheal tube to be processed from the end of the support rod with the airbag, such as... Figure 6 As shown, a certain gap is left between the cuff and the Murphy's orifice of the endotracheal tube to form an air chamber at the front end of the cuff, such as... Figure 7 As shown, the air chamber is a cavity formed between the air bag and the coating liquid by the air pressure inside the endotracheal tube. This ensures that the coating liquid does not enter the inner cavity of the endotracheal tube and does not come into contact with the air bag, thus preventing contamination.

[0054] (3) Using an inflation / inflation device, such as a syringe, insert it into the top of the one-way valve assembly of the coating fixture, push open the guide rod of the one-way valve, open the sealing ring, and inject gas into the air bladder. The injected gas passes sequentially through the first quick-connect plug, the support rod, the second quick-connect plug, and the seal into the air bladder, inflating it so that the air bladder completely adheres to the inner wall of the endotracheal tube. Figure 8 As shown. After the gas is injected, release or disconnect the inflation / injection device. The internal spring of the one-way valve will rebound and press the sealing ring against the air hole to seal it, preventing the gas inside the airbag from leaking out.

[0055] (4) Install the tooling on the impregnation coating equipment and begin the impregnation coating process, such as... Figure 9As shown. During the impregnation coating process, the gas at the front end of the airbag cannot pass through the inner wall of the endotracheal tube, and an air chamber is formed at the front end of the airbag on the inner wall. This prevents the coating liquid from entering the inner cavity of the endotracheal tube during the impregnation process, and also prevents the coating liquid from contacting the coating tooling.

[0056] (5) After the coating is completed, use the air inlet device to open the guide rod of the one-way valve, open the sealing ring, release the gas inside the airbag or draw out the gas inside the airbag, so that the airbag is separated from the inner wall of the endotracheal tube, and the tool of this utility model is pulled out from the endotracheal tube.

[0057] (6) Continue the repeated production and use of the product according to the above steps (1)-(5).

[0058] Compared with the prior art, the beneficial effects of this utility model are as follows:

[0059] Compared with existing impregnation coating fixtures that use plugs to seal the inner cavity of endotracheal tubes, this utility model is simpler in structure, more convenient to operate, easier to switch models, and can better guarantee coating thickness and surface smoothness. The product will not produce stringing due to the properties of the coating material after coating.

[0060] Compared with existing impregnation coating fixtures that use plugs to seal the inner cavity of endotracheal tubes, this utility model reduces the possibility of plugs contaminating the coating liquid, reduces the amount of plugs used, and saves production consumable costs.

[0061] Compared with existing impregnation and coating tooling, this utility model uses a plug to seal the inner cavity of the endotracheal tube, which reduces the production cycle of a single product, improves production efficiency, ensures controllable product quality and good consistency, and achieves the effect of saving costs.

[0062] The technical solutions provided by the embodiments of this utility model have been described in detail above. Specific examples have been used to illustrate the principles and implementation methods of the embodiments of this utility model. The description of the above embodiments is only for helping to understand the principles of the embodiments of this utility model. At the same time, for those skilled in the art, there will be changes in the specific implementation methods and application scope based on the embodiments of this utility model. Therefore, the content of this specification should not be construed as a limitation of this utility model.

Claims

1. A tooling for impregnating and coating the surface of endotracheal tubes, characterized in that, The device includes an inflation / inhalation device, a one-way valve assembly, a first quick-connect plug, a support rod, a second quick-connect plug, a seal, and an airbag. The top of the one-way valve assembly is connected to the inflation / inhalation device, and the bottom is connected to the top of the first quick-connect plug. The top of the support rod is connected to the bottom of the first quick-connect plug, and the bottom is connected to the second quick-connect plug. The seal connects the second quick-connect plug and the airbag. The first quick-connect plug, the support rod, the second quick-connect plug, and the seal all have cavities inside to facilitate the inflation / inhalation device inflating / inhaling the airbag so that it fits / separates from the inner wall of the endotracheal tube. The outer diameter of the support rod matches the inner diameter of the endotracheal tube. When the endotracheal tube surface is impregnated with a coating, the tooling is inserted into the endotracheal tube by the end of the support rod with the air bladder until a certain gap is left between the air bladder and the Murphy orifice of the endotracheal tube to form an air chamber at the front end of the air bladder.

2. The tooling for impregnating and coating the surface of an endotracheal tube according to claim 1, characterized in that, The distance between the cuff and the Murphy foramen of the endotracheal tube is 5-10 mm.

3. The tooling for impregnating the surface of an endotracheal tube with a coating according to claim 1, characterized in that, The support rod is provided with a positioning step on its upper part.

4. The tooling for impregnating the surface of an endotracheal tube with a coating according to claim 3, characterized in that, The endotracheal tube is secured by the endotracheal tube machine end connector.

5. The tooling for impregnating the surface of an endotracheal tube with a coating according to claim 4, characterized in that, The endotracheal intubation machine connector includes a support plate, and a through hole, a snap-fit ​​part, and an endotracheal tube fixing part disposed on the support plate; the through hole is used to accommodate the portion below the positioning step of the support rod; the snap-fit ​​part is used to snap the positioning step of the support rod; the endotracheal tube fixing part is an inverted frustum structure, used to fix endotracheal tubes of different inner diameters.

6. The tooling for impregnating the surface of an endotracheal tube with a coating according to claim 5, characterized in that, The portion of the support rod below the positioning step is configured with a matching outer diameter for endotracheal tubes of different inner diameters.

7. The tooling for impregnating and coating the surface of an endotracheal tube according to claim 1, characterized in that, The inflation / inhalation device is a syringe or an air pump.

8. The tooling for impregnating and coating the surface of an endotracheal tube according to claim 1, characterized in that, The one-way valve assembly includes an indicator, a housing, an air vent, a sealing gasket, a cross guide rod, and a spring; the air vent is located inside the housing; the cross guide rod includes an upward vertical rod, a downward vertical rod, and a horizontal rod; the upward vertical rod passes through the air vent upwards, and the indicator is fixed to the top of the upward vertical rod; the horizontal rod abuts against the bottom of the air vent, and the sealing gasket is located between the air vent and the horizontal rod; the spring is sleeved on the downward vertical rod.

9. A tooling for impregnating and coating the surface of an endotracheal tube according to claim 8, characterized in that, The first quick-connect plug has a step that abuts against the spring and a hole that accommodates the vertical rod.

10. A tooling for impregnating the surface of an endotracheal tube with a coating according to claim 9, characterized in that, A gap is left between the vertical rod and the air hole, and a gap is left between the vertical rod and the hole.

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