Newborn pulmonary surfactant intratracheal administration catheter

Abstract

The invention discloses a newborn pulmonary surfactant intratracheal administration catheter, which belongs to the field of medical instruments and comprises a catheter main body, and a guide head is detachably mounted on the catheter main body; the medicine guiding assembly is arranged in the medicine guiding tube body and used for guiding medicine to the lower section of the trachea of the newborn and the position close to the pulmonary alveoli; the air guide assembly is arranged in the medicine guide tube main body and is used for ensuring that the respiratory function of the newborn is stable in the medicine administration process; the lubricating assembly is arranged in the medicine guide tube body, the universality and adaptability of the catheter are improved through the detachable guide head, and the equipment cost is reduced; due to the precise guiding function of the medicine guiding assembly, medicine waste is avoided, and the treatment effect is improved; the air guide assembly effectively prevents the breathing problems such as oxygen deficit of the newborn during administration, and the treatment safety is guaranteed; the lubricating assembly remarkably reduces the damage risk of the guide head to the fragile tracheal wall of the newborn, and relieves the pain of the newborn.

Description

TECHNICAL FIELD

[0001] The present application relates to the field of medical devices, more particularly to a neonatal lung surfactant endotracheal administration catheter. BACKGROUND

[0002] In the field of neonatal medical treatment, premature infants and some sick newborns are prone to severe lung diseases such as respiratory distress syndrome due to immature lung development and lack of lung surfactant to maintain alveolar stability, threatening life safety. In clinical practice, lung surfactant needs to be accurately delivered to the lower segment of the trachea and the vicinity of the alveoli of the newborn through endotracheal administration to improve lung ventilation function and help the newborn establish normal breathing.

[0003] In the prior art, the existing devices have insufficient drug guiding function in terms of drug delivery, making it difficult to accurately deliver the drug to the lower segment of the trachea and the vicinity of the alveoli of the newborn, and prone to the situation of drug residue in the upper segment of the trachea or local aggregation, resulting in drug waste. The device does not fully consider the respiratory needs of the newborn during administration, lacks a stable and reliable respiratory support channel, and the normal gas exchange is easily interrupted during administration, increasing the risk of hypoxia in newborns and threatening the safety of treatment. It is difficult to adjust the specifications according to the tracheal size and weight differences of different newborns, resulting in the problem that some newborns face the problem of too large devices that cannot be smoothly inserted or too small devices that cause drug delivery deviation, poor universality and adaptability, and increased difficulty of clinical operation and equipment cost. SUMMARY

[0004] In view of the problem in the prior art that the related devices for neonatal lung surfactant endotracheal administration are difficult to adjust the specifications according to the tracheal size and weight differences of different newborns, resulting in the problem that some newborns face the problem of too large devices that cannot be smoothly inserted or too small devices that cause drug delivery deviation, the purpose of the present application is to provide a neonatal lung surfactant endotracheal administration catheter.

[0005] To solve the above problems, the present application adopts the following technical solution:

[0006] A neonatal lung surfactant endotracheal administration catheter, comprising a drug guide tube main body, one end of the drug guide tube main body is detachably connected with a guide head, the other end is connected with a drug guide assembly and a lubricating assembly, a gas guide assembly is installed in the middle of the drug guide tube main body, one end of the gas guide assembly is connected with the drug guide tube main body, and the other end is connected with a breathing machine.

[0007] Optionally, the drug delivery assembly includes a drug delivery cavity formed in the main body of the drug delivery tube, the drug delivery cavity being connected to the guide head, a storage cylinder being fixedly installed on the main body of the drug delivery tube, a first piston rod being slidably installed inside the storage cylinder, a drug being disposed between the first piston rod and the storage cylinder, a first conduit being fixedly installed on the storage cylinder, and the end of the first conduit away from the storage cylinder being connected to the drug delivery cavity.

[0008] Optionally, the guide head is provided with a pair of sliding grooves, a sliding frame is slidably installed in the sliding grooves, a fixing ring is fixedly installed on the inner wall of the guide head, a spring is fixedly installed on the fixing ring, and the end of the spring away from the fixing ring is fixedly connected to the sliding frame.

[0009] Optionally, a rotating sleeve is rotatably mounted on the sliding frame, a spiral plate is fixedly mounted on the rotating sleeve, a diffusion cover is fixedly mounted on the spiral plate, and a plurality of diffusion holes are formed on the diffusion cover.

[0010] Optionally, the air delivery assembly includes an air delivery chamber formed in the main body of the drug delivery tube, and a pair of air delivery tubes communicating with the air delivery chamber are fixedly installed on the main body of the drug delivery tube, with the end of the air delivery tube away from the main body of the drug delivery tube connected to the ventilator.

[0011] Optionally, the lubrication assembly includes a flow cavity formed within the main body of the drug delivery tube, a second piston rod slidably mounted inside the storage cylinder, physiological saline being disposed between the second piston rod and the storage cylinder, a second conduit fixedly mounted on the storage cylinder, a section of the second conduit away from the storage cylinder communicating with the flow cavity, the flow cavity communicating with the guide head, and the guide head having several overflow holes.

[0012] Optionally, the storage cylinder is provided with a heat insulation component, the heat insulation component includes an installation cavity formed on the storage cylinder, an electric heating wire is disposed in the installation cavity, and an energy supply module is disposed on the storage cylinder, the energy supply module being electrically connected to the electric heating wire.

[0013] Optionally, the sliding frame is provided with a filter assembly, which includes a filter screen fixedly installed on the sliding frame, capable of filtering fine impurities in the medicine. The sliding frame is provided with a rotating groove, in which a rotating ring is rotatably installed, and a wiping pad is fixedly installed on the rotating ring.

[0014] Optionally, the main body of the drug delivery tube is provided with a pre-disinfection component, the pre-disinfection component includes a pair of mounting rings, the mounting rings are fixedly mounted with protrusions, adjacent protrusions are connected by bolts, and a disinfection sponge is fixedly mounted inside the mounting rings.

[0015] Optionally, the main body of the drug delivery tube is provided with several support pads, which are used to support the drug delivery chamber, the air delivery chamber and the flow chamber.

[0016] Compared with the prior art, the technical solution provided by this invention has at least the following beneficial effects:

[0017] In the above solution, the use of a detachable guide head improves the versatility and adaptability of the catheter and reduces equipment costs; the precise guiding function of the drug delivery component avoids drug waste and improves treatment efficacy; the gas delivery component effectively prevents respiratory problems such as hypoxia in newborns during drug administration, ensuring treatment safety; and the lubrication component significantly reduces the risk of damage to the fragile tracheal wall of newborns by the guide head, alleviating the suffering of newborns.

[0018] The storage cylinder fixed on the main body of the drug delivery tube is used to pre-store the pulmonary surfactant agent. The first piston rod is sealed to the inner wall of the storage cylinder. When the medical staff pushes the first piston rod, the first piston rod generates pressure on the agent in the storage cylinder, causing the agent to flow along the first catheter. Since the end of the first catheter away from the storage cylinder is connected to the drug delivery chamber, the agent finally enters the drug delivery chamber through the first catheter, and is then delivered to the guide head through the drug delivery chamber, and then enters the lower trachea and alveoli of the newborn.

[0019] The retaining ring fixed to the inner wall of the guide provides a fixed support point for the spring. One end of the spring is fixed to the retaining ring, and the other end is fixed to the sliding frame, forming an elastic connection structure. When the guide is inserted into the neonatal trachea or when the medication flows inside the guide and exerts a force on the sliding frame, the sliding frame will move along the slide groove. At this time, the spring will be stretched and deformed accordingly, generating an elastic force. This elastic force will act in the opposite direction on the sliding frame, buffering the force on the sliding frame and making the movement of the sliding frame more stable. At the same time, when the medication is delivered, the spring will drive the sliding frame to return to its original position, sealing the guide and preventing backflow. Attached Figure Description

[0020] The accompanying drawings, which are incorporated herein and form part of the specification, illustrate embodiments of the invention and, together with the specification, further serve to explain the principles of the invention and enable those skilled in the art to practice and use the invention.

[0021] Figure 1 This is a schematic diagram of the overall structure of the present invention;

[0022] Figure 2 This is a schematic diagram of the structure of the drug delivery chamber, gas delivery chamber, and flow chamber of the present invention;

[0023] Figure 3 This is a schematic diagram of the thermal insulation component of the present invention;

[0024] Figure 4 For the present invention Figure 3 Enlarged view of point A;

[0025] Figure 5 This is a schematic diagram of the pre-disinfection component in this invention;

[0026] Figure 6 This is a partial cross-sectional view of the guide head of the present invention;

[0027] Figure 7 This is a schematic diagram of the drug delivery component of the present invention;

[0028] Figure 8 This is a schematic diagram showing the interaction between the rotating ring and the wiping pad of the present invention.

[0029] [Figure Labels]

[0030] 10. Drug delivery tube body; 11. Guide head;

[0031] 20. Drug delivery assembly; 21. Drug delivery chamber; 22. Storage cylinder; 23. First piston rod; 24. First conduit; 25. Slide groove; 26. Sliding frame; 27. Fixing ring; 28. Spring; 29. ​​Rotating sleeve; 210. Spiral plate; 211. Diffusion hood; 212. Diffusion hole;

[0032] 30. Air guiding assembly; 31. Air guiding tube; 32. Air guiding chamber;

[0033] 40. Lubrication assembly; 41. Flow chamber; 42. Overflow hole; 43. Second piston rod; 44. Second conduit;

[0034] 50. Pre-disinfection component; 51. Mounting ring; 52. Protrusion; 53. Bolt; 54. Disinfecting sponge;

[0035] 60. Insulation component; 61. Mounting cavity; 62. Heating wire; 63. Power supply module;

[0036] 70. Filter assembly; 71. Filter screen; 72. Rotating groove; 73. Rotating ring; 74. Wiping plate;

[0037] 80. Support pad.

[0038] As shown in the figure, specific structures and devices are marked in the figure to clearly illustrate the structure of the embodiments of the present invention. However, this is only for illustrative purposes and is not intended to limit the present invention to this specific structure, device and environment. Those skilled in the art can adjust or modify these devices and environments according to specific needs. Detailed Implementation

[0039] The present invention will now be described in detail with reference to the accompanying drawings and specific embodiments. It should also be noted that, to make the embodiments more comprehensive, the following embodiments are the best and preferred embodiments, and those skilled in the art can use other alternative methods to implement some well-known technologies; moreover, the accompanying drawings are only for more specific description of the embodiments and are not intended to specifically limit the present invention.

[0040] It should be noted that the use of terms such as "an embodiment," "an embodiment," "an exemplary embodiment," and "some embodiments" in the specification indicates that the described embodiment may include a specific feature, structure, or characteristic, but not every embodiment necessarily includes that specific feature, structure, or characteristic. Furthermore, when a specific feature, structure, or characteristic is described in connection with an embodiment, implementing such a feature, structure, or characteristic in conjunction with other embodiments (whether explicitly described or not) should be within the knowledge of those skilled in the art.

[0041] Generally, terms can be understood at least partly from their use in context. For example, depending at least partly on the context, the term "one or more" as used herein can be used to describe any feature, structure, or characteristic in a singular sense, or a combination of features, structures, or characteristics in a plural sense. Additionally, the term "based on" can be understood not necessarily to convey an exclusive set of factors, but rather, alternatively, depending at least partly on the context, to allow for the presence of other factors that are not necessarily explicitly described.

[0042] It is understood that the meanings of “on”, “above”, and “above” in this invention should be interpreted in the broadest manner, such that “on” means not only “directly on” something, but also includes the meaning of being “on” something with an intervening feature or layer, and that “above” or “above” means not only “on” something, but also includes the meaning of being “on” something without an intervening feature or layer.

[0043] Furthermore, spatially related terms such as “below,” “under,” “lower,” “above,” and “upper” are used herein for convenience to describe the relationship of one element or feature to one or more other elements or features, as illustrated in the accompanying drawings. Spatially related terms are intended to cover different orientations in the use or operation of the device other than those depicted in the accompanying drawings. The device may be oriented in other ways, and the spatially related descriptive terms used herein can be interpreted similarly.

[0044] like Figures 1 to 8 As shown, this embodiment of the invention provides a neonatal pulmonary surfactant intratracheal administration catheter, including a drug delivery tube body 10. One end of the drug delivery tube body 10 is detachably connected to a guide head 11, and the other end is connected to a drug delivery component 20 and a lubrication component 30. A gas delivery component 30 is installed in the middle of the drug delivery tube body 10. One end of the gas delivery component 30 is connected to the drug delivery tube body 10, and the other end is connected to a ventilator.

[0045] This neonatal pulmonary surfactant intratracheal delivery catheter uses the main body 10 as its base carrier. The guide head 11 is detachably installed on the main body 10. Different models of guide heads 11 are available to facilitate replacement with the appropriate guide head 11 according to the specific condition of the newborn. The delivery component 20 is integrated inside the main body 10. Its core function is to receive the externally delivered pulmonary surfactant and precisely guide the drug to the lower trachea and alveoli of the newborn through a specific channel, ensuring that the drug can act on key treatment sites. The gas delivery component 30 is also located in the main body 10. During the drug delivery operation, it continuously works with the external respiratory support equipment to provide a stable gas delivery channel for the newborn, maintain normal gas exchange, and ensure stable respiratory function. The lubrication component 40 continuously generates and releases lubricating substances as the guide head 11 is inserted into the newborn's body, forming a lubricating layer between the guide head 11 and the tracheal wall of the newborn, reducing frictional contact between the two.

[0046] The detachable guide tip 11 improves the versatility and adaptability of the catheter and reduces equipment costs; the precise guiding function of the drug delivery component 20 avoids drug waste and improves treatment efficacy; the gas delivery component 30 effectively prevents respiratory problems such as hypoxia in newborns during drug administration and ensures treatment safety; the lubrication component 40 significantly reduces the risk of damage to the fragile tracheal wall of newborns by the guide tip 11 and alleviates the pain of newborns.

[0047] like Figure 6 As shown, the drug delivery assembly 20 includes a drug delivery cavity 21 formed in the drug delivery tube body 10, and the drug delivery cavity 21 is connected to the guide head 11. Figure 3 As shown, a storage cylinder 22 is fixedly installed on the main body 10 of the drug delivery tube. A first piston rod 23 is slidably installed inside the storage cylinder 22. A drug is placed between the first piston rod 23 and the storage cylinder 22. A first conduit 24 is fixedly installed on the storage cylinder 22. The two ends of the first conduit 24 are respectively connected to the storage cylinder 22 and the drug delivery cavity 21.

[0048] The storage cylinder 22 fixed on the main body 10 of the drug delivery tube is used to pre-store the pulmonary surfactant agent. The first piston rod 23 is sealed to the inner wall of the storage cylinder 22. When the medical staff pushes the first piston rod 23, the first piston rod 23 exerts pressure on the agent in the storage cylinder 22, causing the agent to flow along the first conduit 24. Since the end of the first conduit 24 away from the storage cylinder 22 is connected to the drug delivery chamber 21, the agent finally enters the drug delivery chamber 21 through the first conduit 24, and is then delivered to the guide head 11 through the drug delivery chamber 21, and then enters the lower trachea and alveoli of the newborn. Through the pushing action of the first piston rod 23, the active delivery of the agent is realized, which can accurately control the delivery speed and dosage of the agent, and avoid the agent being delivered too fast or too slow, thus affecting the treatment effect. At the same time, the setting of the storage cylinder 22 facilitates the pre-storage and management of the agent and improves the convenience of drug administration.

[0049] like Figure 6 As shown, a pair of sliding grooves 25 are provided on the guide head 11, and a sliding frame 26 is slidably installed in the sliding grooves 25. A fixing ring 27 is fixedly installed on the inner wall of the guide head 11, and a spring 28 is fixedly installed on the fixing ring 27. The end of the spring 28 away from the fixing ring 27 is fixedly connected to the sliding frame 26.

[0050] The fixing ring 27, fixed to the inner wall of the guide head 11, provides a fixed support point for the spring 28. One end of the spring 28 is fixed to the fixing ring 27, and the other end is fixed to the sliding frame 26, forming an elastic connection structure. When the guide head 11 is inserted into the neonatal trachea or when the medication flows within the guide head 11 and exerts a force on the sliding frame 26, the sliding frame 26 will move along the slide groove 25. At this time, the spring 28 will correspondingly undergo tensile deformation, generating elastic force. This elastic force will act in the opposite direction on the sliding frame 26, buffering the force on the sliding frame 26 and making the movement of the sliding frame 26 more stable. At the same time, after the medication delivery is completed, the spring 28 will drive the sliding frame 26 to return to its original position, sealing the guide head 11 and preventing backflow. The elastic buffering effect of the spring 28 prevents the sliding frame 26 from moving violently due to sudden force, reduces the impact of the sliding frame 26 on the inner wall of the guide head 11 and the neonatal tracheal wall, protects the structure of the guide head 11 and the neonatal tracheal tissue, and also ensures the stable operation of subsequent related components.

[0051] like Figure 6 and Figure 7 As shown, a rotating sleeve 29 is rotatably mounted on the sliding frame 26, and a spiral plate 210 is fixedly mounted on the rotating sleeve 29. A diffusion cover 211 is fixedly mounted on the sliding frame 26, and the diffusion cover 211 has several diffusion holes 212. When the medicine is conveyed from the medicine delivery chamber 21 to the guide head 11 and contacts the spiral plate 210, the flow of the medicine will generate an impact force on the spiral plate 210, driving the spiral plate 210 to drive the rotating sleeve 29 to rotate. During the rotation of the spiral plate 210, it will play a role in stirring and guiding the medicine. The medication is evenly guided to the diffusion hood 211, and the diffusion holes 212 on the diffusion hood 211 disperse the medication into fine drug droplets. These drug droplets can be more evenly distributed in the lower trachea and near the alveoli of the newborn. The stirring and guiding effect of the spiral plate 210, as well as the dispersing effect of the diffusion hood 211 and the diffusion holes 212, greatly improve the uniformity of the medication dispersion, increase the contact area between the medication and the alveoli, improve the absorption efficiency and therapeutic effect of the medication, and avoid the problem of uneven treatment caused by local aggregation of medication.

[0052] like Figure 2As shown, the gas delivery assembly 30 includes a gas delivery chamber 32 formed in the drug delivery tube body 10. A pair of gas delivery tubes 31 communicating with the gas delivery chamber 32 are fixedly installed on the drug delivery tube body 10. The end of the gas delivery tube 31 away from the drug delivery tube body 10 is connected to the ventilator. During drug administration, gas (such as a mixture of air and oxygen) with appropriate pressure and flow rate generated by the ventilator enters the gas delivery chamber 32 through the gas delivery tube 31, and is then delivered to the neonatal trachea through the gas delivery chamber 32 to meet the gas exchange needs of the neonatal breathing process, maintain normal blood oxygen saturation and respiratory function, and can accurately adjust gas parameters according to the specific respiratory condition of the neonatal, ensuring the effectiveness and safety of respiratory support and providing a guarantee for the smooth operation of drug administration.

[0053] like Figure 2 and Figure 4 As shown, the lubrication assembly 40 includes a flow cavity 41 formed within the drug delivery tube body 10. A second piston rod 43 is slidably mounted within the storage cylinder 22. Physiological saline solution is disposed between the second piston rod 43 and the storage cylinder 22. A second conduit 44 is fixedly mounted on the storage cylinder 22. The end of the second conduit 44 away from the storage cylinder 22 communicates with the flow cavity 41. The flow cavity 41 is connected to the guide head 11. Figure 6 As shown, the guide head 11 has several overflow holes 42.

[0054] The flow chamber 41 of the lubrication assembly 40 is a storage and flow channel for saline solution within the main body 10 of the drug delivery tube. It is connected to the guide head 11, providing a path for the saline solution to be delivered to the guide head 11. A second piston rod 43, slidably mounted inside the storage cylinder 22, is sealed to the inner wall of the storage cylinder 22. Saline solution is stored between the second piston rod 43 and the storage cylinder 22. When lubrication is required, medical personnel push the second piston rod 43, applying pressure to the saline solution in the storage cylinder 22, causing the saline solution to flow along the second conduit 44. Because the second conduit 44 is far from the storage cylinder 22... The end is connected to the flow chamber 41. After the saline enters the flow chamber 41, it is then transported to the guide head 11 through the flow chamber 41. Finally, it seeps out from several overflow holes 42 on the guide head 11 and coats the surface of the guide head 11 and the contact area with the neonatal tracheal wall to form a lubricating layer. The amount and speed of saline seepage are controlled by pushing the second piston rod 43, which realizes continuous and controllable lubrication, avoids friction damage caused by insufficient lubrication, and also prevents excessive saline from entering the neonatal trachea and causing adverse reactions, thus ensuring the smoothness and safety of the guide head 11 insertion process.

[0055] like Figure 2As shown, the storage cylinder is equipped with a heat preservation component 60, which includes an installation cavity 61 formed on the storage cylinder. An electric heating wire 62 is installed inside the installation cavity 61. An energy supply module 63 is installed on the storage cylinder 22, and the energy supply module 63 is electrically connected to the electric heating wire 62. The installation cavity 61 provides installation space for the electric heating wire 62, facilitating heat transfer. The energy supply module 63 on the storage cylinder 22 is electrically connected to the electric heating wire 62, providing it with electrical energy. When it is necessary to keep the medicine or saline solution in the storage cylinder 22 warm, the energy supply module 63 supplies power to the electric heating wire 62. The electric heating wire 62 heats up after being energized, and the generated heat is transferred through the side wall of the storage cylinder 22 to the medicine and saline solution inside, maintaining them at a suitable temperature. This prevents the medicine or saline solution from being affected by excessively low temperatures, thus avoiding damage to the efficacy of the medicine or irritation of the newborn's fragile tracheal tissue. It ensures the activity and safety of the medicine, and also improves the comfort of the newborn during treatment.

[0056] like Figure 7 and Figure 8 As shown, a filter assembly 70 is provided on the sliding frame 26. The filter assembly 70 includes a filter screen 71 fixedly installed on the sliding frame 26, which can filter out fine impurities in the medicine. A rotating groove 72 is provided on the sliding frame 26. A rotating ring 73 is rotatably installed in the rotating groove 72. A wiping pad 74 is fixedly installed on the rotating ring 73.

[0057] The filter screen 71 of the filter assembly 70 is fixedly installed on the sliding frame 26, located in the drug flow path. When the drug is delivered from the drug delivery chamber 21 to the guide head 11, it first passes through the filter screen 71. The pore size of the filter screen 71 is smaller than the particle size of any small impurities that may exist in the drug, which can intercept the impurities on one side of the filter screen 71, thus filtering the drug. The rotating groove 72 on the sliding frame 26 provides a rotating installation space for the rotating ring 73. The rotating ring 73 can rotate in the rotating groove 72, and the wiping pad 74 fixed on the rotating ring 73 contacts the surface of the filter screen 71. When the drug flow drives the rotating ring 73 to rotate, the wiping pad 74 will slide on the surface of the filter screen 71 to wipe and clean the impurities intercepted on the surface of the filter screen 71, preventing impurities from clogging the mesh of the filter screen 71. The filter screen 71 effectively removes small impurities in the drug, preventing impurities from entering the newborn's trachea and causing infection or other adverse reactions, thus ensuring the purity of the drug. The cleaning action of the wiping pad 74 prevents the filter screen 71 from clogging, ensuring smooth drug delivery and reducing the frequency of equipment maintenance.

[0058] like Figure 4 and Figure 5As shown, a pre-disinfection component 50 is provided on the main body 10 of the drug delivery tube. The pre-disinfection component 50 includes a pair of mounting rings 51. A protrusion 52 is fixedly installed on the mounting ring 51. Adjacent protrusions 52 are connected by bolts 53. A disinfectant sponge 54 is fixedly installed inside the mounting ring 51. The pair of mounting rings 51 of the pre-disinfection component 50 can be sleeved on the main body 10 of the drug delivery tube. The protrusions 52 fixed on the mounting rings 51 provide installation positions for the bolts 53. Adjacent protrusions 52 are connected and fixed by bolts 53, thereby fixing the mounting rings 51 at a specific position on the main body 10 of the drug delivery tube. The disinfectant sponge 54 fixedly installed inside the mounting rings 51 is soaked in disinfectant solution. When the main body 10 of the drug delivery tube needs to be disinfected before or after use, the mounting rings 51 are moved so that the disinfectant sponge 54 contacts and slides relative to the surface of the main body 10 of the drug delivery tube. The disinfectant solution on the disinfectant sponge 54 will be applied to the main body 10 of the drug delivery tube to disinfect the main body 10. It enables convenient pre-disinfection or post-operative disinfection of the main body 10 of the drug delivery tube, reduces the risk of cross-infection, and improves the hygiene and safety of equipment use. At the same time, the detachable and adjustable design of the mounting ring 51 facilitates disinfection operations and equipment cleaning and maintenance.

[0059] like Figure 2 As shown, the main body 10 of the drug delivery tube is provided with several support pads 80, which are used to support the drug delivery chamber 21, the air delivery chamber 32, and the flow chamber 41. The support pads 80 are located in the intervals between the drug delivery chamber 21, the air delivery chamber 32, and the flow chamber 41, and are made of a material with a certain strength and elasticity. During the manufacturing and use of the main body 10 of the drug delivery tube, the support pads 80 can support the side walls of each chamber, preventing deformation or collapse of the chambers due to external pressure, internal fluid pressure, or their own structural stress, maintaining the shape and internal space size of each chamber; ensuring the unobstructed flow of the drug delivery chamber 21, the air delivery chamber 32, and the flow chamber 41 during use, avoiding obstruction of drug or gas delivery due to chamber deformation, ensuring the normal functioning of each component, and also enhancing the overall structural strength and stability of the main body 10 of the drug delivery tube, extending the service life of the equipment.

[0060] The specific workflow of the technical solution provided by the present invention is as follows: When using the neonatal lung surfactant endotracheal administration catheter, firstly, according to the newborn's weight, tracheal size, etc., select a suitable guide head 11 and install it on the main body 10 of the drug delivery tube. Then, pre-disinfect the main body 10 of the drug delivery tube using the pre-disinfection component 50. Place a pair of mounting rings 51 on the main body 10 of the drug delivery tube near the guide head 11. Use bolts 53 to connect and fix adjacent protrusions 52 so that the disinfectant sponge 54 inside the mounting ring 51 contacts the surface of the main body 10 of the drug delivery tube. Move the mounting ring 51 so that the disinfectant sponge 54 thoroughly disinfects the surface of the main body 10 of the drug delivery tube. After disinfection, remove the mounting ring 51.

[0061] Pulmonary surfactant and saline solution are loaded into the storage cylinder 22, with the surfactant located between the first piston rod 23 and the storage cylinder 22, and the saline solution located between the second piston rod 43 and the storage cylinder 22. The heat preservation component 60 is activated, and the power supply module 63 supplies power to the heating wire 62 in the mounting cavity 61. The heating wire 62 generates heat and transfers the heat to the storage cylinder 22, maintaining the surfactant and saline solution inside at a suitable temperature close to the human body temperature, ensuring the activity of the surfactant and the safety of use. At the same time, the end of the air delivery tube 31 of the air delivery component 30 away from the drug delivery tube body 10 is connected to the ventilator. The air delivery chamber 32 is checked to ensure that it is unobstructed and that the respiratory support system is working properly.

[0062] When the drug administration procedure begins, the medical staff holds the main body 10 of the drug delivery tube and slowly inserts the guide head 11 into the neonatal trachea. During insertion, the second piston rod 43 is pushed, which exerts pressure on the saline solution in the storage cylinder 22. The saline solution flows into the flow chamber 41 through the second catheter 44, and then is delivered to the guide head 11 through the flow chamber 41. Finally, it seeps out from the overflow hole 42 on the guide head 11, forming a lubricating layer between the surface of the guide head 11 and the neonatal tracheal wall, reducing friction and protecting the neonatal tracheal wall from damage. At the same time, the support pad 80 in the main body 10 of the drug delivery tube supports the drug delivery chamber 21, the air delivery chamber 32 and the flow chamber 41, preventing the chambers from deforming and affecting fluid delivery.

[0063] When the guide head 11 reaches the appropriate position in the lower segment of the neonatal trachea, the second piston rod 43 is stopped from being pushed, and the medication delivery begins. The first piston rod 23 is pushed, squeezing the medication in the storage cylinder 22. The medication enters the delivery chamber 21 through the first conduit 24, and then flows to the guide head 11. During the medication flow, it first passes through the filter screen 71 on the sliding frame 26. The filter screen 71 intercepts small impurities in the medication, ensuring its purity. At the same time, the flow of the medication generates an impact force on the spiral plate 210, causing the rotating sleeve 29 to rotate on the sliding frame 26. During the rotation of plate 210, the medicine is stirred and guided, and the medicine is evenly delivered to diffuser 211. The medicine is then dispersed into fine droplets through diffuser holes 212 on diffuser 211, and evenly distributed in the lower trachea and near alveoli of the newborn, improving the absorption efficiency of the medicine. During this process, if the medicine flows or the guide head 11 moves slightly, causing the sliding frame 26 to move along the slide groove 25, the spring 28 on the fixing ring 27 on the inner wall of the guide head 11 will undergo elastic deformation, generating a buffering force, so that the sliding frame 26 moves smoothly and avoids impact on the guide head 11 and the newborn's trachea.

[0064] Throughout the drug administration process, the ventilator delivers gas at appropriate pressure and flow rate to the air chamber 32 through the air delivery tube 31. The gas enters the neonatal trachea through the air delivery chamber 32, maintaining normal gas exchange and stable respiratory function in the neonatal. If the filter 71 shows signs of blockage during the drug administration process, the rotating ring 73 can be rotated in the rotating groove 72 by the slight movement of the sliding frame 26. The wiping pad 74 on the rotating ring 73 wipes and cleans the surface of the filter 71 to ensure smooth drug delivery.

[0065] After administration, slowly remove the main body 10 and the tip 11 of the drug delivery tube, turn off the insulation component 60 and the ventilator, and clean and disinfect the catheter for future use.

[0066] The above description is only a preferred embodiment of the present invention. It should be noted that for those skilled in the art, several improvements and modifications can be made without departing from the principle of the present invention, and these improvements and modifications should also be considered within the scope of protection of the present invention.

Claims

1. A neonatal pulmonary surfactant intratracheal delivery catheter, characterized in that: The device includes a drug delivery tube body, one end of which is detachably connected to a guide head, and the other end is connected to a drug delivery component and a lubrication component. An air delivery component is installed in the middle of the drug delivery tube body, with one end of the air delivery component connected to the drug delivery tube body and the other end connected to a ventilator.

2. The neonatal pulmonary surfactant intratracheal delivery catheter according to claim 1, characterized in that, The drug delivery assembly includes a drug delivery cavity formed in the main body of the drug delivery tube, the drug delivery cavity being connected to the delivery head, a storage cylinder being fixedly installed on the main body of the drug delivery tube, a first piston rod being slidably installed inside the storage cylinder, a drug being disposed between the first piston rod and the storage cylinder, a first conduit being fixedly installed on the storage cylinder, and the end of the first conduit away from the storage cylinder being connected to the drug delivery cavity.

3. The neonatal pulmonary surfactant intratracheal delivery catheter according to claim 2, characterized in that, The guide head has a pair of sliding grooves, and a sliding frame is slidably installed in the sliding grooves. A fixing ring is fixedly installed on the inner wall of the guide head, and a spring is fixedly installed on the fixing ring. The end of the spring away from the fixing ring is fixedly connected to the sliding frame.

4. The neonatal pulmonary surfactant intratracheal delivery catheter according to claim 3, characterized in that, A rotating sleeve is rotatably mounted on the sliding frame, a spiral plate is fixedly mounted on the rotating sleeve, a diffusion cover is fixedly mounted on the spiral plate, and a plurality of diffusion holes are formed on the diffusion cover.

5. The neonatal pulmonary surfactant intratracheal delivery catheter according to claim 4, characterized in that, The air delivery assembly includes an air delivery chamber formed in the main body of the drug delivery tube. A pair of air delivery tubes communicating with the air delivery chamber are fixedly installed on the main body of the drug delivery tube. The end of the air delivery tube away from the main body of the drug delivery tube is connected to the ventilator.

6. The neonatal pulmonary surfactant intratracheal delivery catheter according to claim 5, characterized in that, The lubrication assembly includes a flow cavity formed within the main body of the drug delivery tube. A second piston rod is slidably installed inside the storage cylinder. Physiological saline is disposed between the second piston rod and the storage cylinder. A second conduit is fixedly installed on the storage cylinder. The end of the second conduit away from the storage cylinder is connected to the flow cavity. The flow cavity is connected to the guide head. The guide head has several overflow holes.

7. The neonatal pulmonary surfactant intratracheal delivery catheter according to claim 6, characterized in that, The storage cylinder is provided with a heat preservation component, which includes an installation cavity formed on the storage cylinder, an electric heating wire disposed in the installation cavity, and a power supply module disposed on the storage cylinder, the power supply module being electrically connected to the electric heating wire.

8. The neonatal pulmonary surfactant intratracheal delivery catheter according to claim 7, characterized in that, The sliding frame is equipped with a filter assembly, which includes a filter screen fixedly installed on the sliding frame, capable of filtering out fine impurities in the medicine. The sliding frame has a rotating groove, in which a rotating ring is rotatably installed, and a wiping pad is fixedly installed on the rotating ring.

9. The neonatal pulmonary surfactant intratracheal delivery catheter according to claim 8, characterized in that, The main body of the drug delivery tube is provided with a pre-disinfection component, which includes a pair of mounting rings. The mounting rings are fixedly mounted with protrusions, and adjacent protrusions are connected by bolts. A disinfection sponge is fixedly mounted inside the mounting rings.

10. The neonatal pulmonary surfactant intratracheal delivery catheter according to claim 9, characterized in that, The main body of the drug delivery tube is provided with several support pads, which are used to support the drug delivery chamber, the air delivery chamber and the flow chamber.

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