Novel pulse suction catheter

Abstract

The novel pulse suction catheter comprises an inner tube and an outer tube, the outer tube is coaxially arranged on the outer side of the inner tube, the ends, away from a suction head, of the outer tube and the inner tube are connected through a connecting mechanism, the inner tube can slide and rotate relative to the outer tube, and a negative pressure suction cavity is formed between the inner tube and the outer tube; a negative pressure device is connected through a connecting port of a negative pressure connecting mechanism at the rear part for suction, so that a double-tube suction function is realized; an adjusting mechanism used for adjusting the bending direction of the front end of the inner pipe is arranged behind the connecting mechanism and connected with the inner pipe through an adjusting line. The device further comprises a pulse suction device, and the pulse suction device is connected with the multifunctional interface of the connecting mechanism. The rear-end negative-pressure connecting structure is connected with a negative-pressure device for suction, double-tube suction is formed in the annular part between the inner tube and the outer tube through one negative-pressure source, double suction of sputum in the trachea is achieved, the risk that the sputum blocks the trachea is reduced, the suction efficiency is improved, and the catheterization time of a patient is shortened.

Description

Technical Field

[0001] This invention belongs to the field of medical technology, and specifically relates to a novel pulse-assisted aspiration catheter. Background Technology

[0002] With the advancement of modern medicine, endotracheal intubation and suctioning techniques have been widely used in clinical practice, especially for patients who are bedridden for extended periods, have respiratory tract diseases, or are postoperative. However, existing suction catheter designs still have some shortcomings, such as sputum blockage, low suction efficiency, and difficulty in cleaning the catheter. These problems not only increase the patient's treatment time but may also affect the patient's recovery process. Therefore, existing products still need improvement. Summary of the Invention

[0003] Purpose of the invention: In order to overcome the above shortcomings, the purpose of this invention is to provide a novel pulse-assisted aspiration catheter with a simple structure and reasonable design. It can be connected to a negative pressure device through a negative pressure connection structure at the rear end for aspiration. A single negative pressure source can form a double-tube aspiration system with the inner tube, outer tube, and the annular section between the inner tubes, enabling dual aspiration of sputum in the trachea, reducing the risk of sputum blockage, improving aspiration efficiency, and reducing the patient's intubation time.

[0004] Technical Solution: To achieve the above objectives, the present invention provides a novel pulse-assisted suction catheter, comprising: an inner tube and an outer tube. The outer tube is coaxially disposed outside the inner tube, and the ends of the two tubes away from the suction head are connected by a connecting mechanism. The inner tube can slide and rotate relative to the outer tube. Negative pressure suction chambers are formed inside the inner tube, between the inner and outer tubes, and between the inner tube and the connecting mechanism. The suction is performed by connecting a negative pressure device through the connection port of the negative pressure connecting mechanism at the rear, thereby realizing the dual-tube suction function. An adjustment mechanism for adjusting the bending direction of the inner tube's front end is located behind the connecting mechanism, and the adjustment mechanism is connected to the inner tube via an adjustment line; It also includes a pulse aspiration device, which is connected to the multi-functional interface of the connecting mechanism. This invention provides a novel pulse aspiration catheter. Through structural improvements and optimizations, it can connect to a negative pressure device via a rear-end negative pressure connection structure for aspiration. A single negative pressure source enables dual-tube aspiration, forming a loop between the inner and outer tubes and the annular portion between the inner and outer tubes. This allows for dual aspiration of sputum from the trachea, reducing the risk of sputum blockage, improving aspiration efficiency, and shortening intubation time. Furthermore, the adjustable mechanism allows for bending of the inner tube's suction tip, enabling omnidirectional aspiration of the trachea and effectively improving the aspiration effect.

[0005] The pulse suction device includes a connecting drive component, a suction tube component, a suction power component, and a limiting component. The suction tube component is located inside the connecting drive component, and the suction power component is located inside the suction tube component. A spring is provided on the outside of the suction tube located inside the connecting drive component. After one end of the limiting component passes through the connecting drive component, it positions the spring located on the outside of the suction tube component, so that it is in a stretched state. When the limiting component is removed, the spring contracts, and the connecting drive component will drive the suction power component to suck outward under the drive of the spring, realizing secondary pulse suction.

[0006] Furthermore, a connecting pipe is provided between the suction tube and the multi-functional interface, and a control valve is provided on the connecting pipe. The pulse suction device connects the control valve to the pipeline. Initially, the syringe is in a non-suction state, the control valve is closed, and the suction power component is pulled and fixed on the connecting drive component. At this time, the control valve is opened, enabling the initial pulse suction. When the suction tube is blocked or the suction efficiency is low, the position limiting component is pulled. The stretched spring then returns to its original position, driving the suction power component upward to achieve a second, rapid suction of the syringe, forming a pulse suction.

[0007] Preferably, the working end of the inner tube is provided with at least one suction port, and its end is designed with a rounded tip. This reduces irritation to the trachea. Multiple suction ports are also provided to increase the local suction speed and efficiency. Considering the high viscosity of sputum, the rounded-tip catheter is equipped with multiple suction ports, which can both cut the sputum for easier suction and increase the local suction speed and efficiency.

[0008] More preferably, the outer tube is provided with a limiting structure to restrict the movement of the inner tube. This limits the range of movement of the inner tube, prevents it from sliding too deeply and causing damage, ensures that the inner tube operates within a safe range, and avoids damage to patient tissues from excessive movement.

[0009] Furthermore, the connecting mechanism includes a first connecting member and a second connecting member. The first connecting member is tapered, with one end located at the limiting mechanism of the outer tube. The second connecting member is located on the outside of the inner tube and connected by a connecting rib, with its end connected to the first connecting member.

[0010] Preferably, the second connector is provided with a first channel.

[0011] More preferably, the inner tube is provided with a cleaning channel and a rinsing hole, and the cleaning channel is connected to the first channel. The inner tube can be cleaned by injecting physiological saline.

[0012] More preferably, the inner tube has a second channel for adjusting the routing of the wires.

[0013] More preferably, the outer tube is provided with a drug delivery device, which is movable on the outer tube. The drug delivery device can deliver specific drugs according to the patient's needs.

[0014] As can be seen from the above technical solution, the present invention has the following beneficial effects: 1. The novel pulse-assisted aspiration catheter of this invention, through structural improvements and optimizations, can be connected to a negative pressure device via a rear-end negative pressure connection structure for aspiration. A single negative pressure source enables dual-tube aspiration, forming a loop between the inner and outer tubes and the annular portion between the inner and outer tubes. This allows for dual aspiration of sputum within the trachea, reducing the risk of sputum blockage, improving aspiration efficiency, and shortening intubation time. The pulse-assisted aspiration in this design applies peak suction and release forces during the aspiration process, creating a short-duration, powerful suction that increases instantaneous aspiration power. This effectively improves aspiration efficiency and reduces the risk of sputum blockage.

[0015] 2. The adjustment mechanism allows for bending of the inner tube's suction tip, enabling adjustments as needed for suctioning at different locations. Simultaneously, the rotation and movement of the inner tube allow for omnidirectional suction of the trachea, effectively improving suction efficiency. Multiple suction holes are provided on the inner tube's suction tip. During bending, rotation, and movement, the inner tube can disrupt the shape and size of obstructing sputum, cutting it for easier suction and increasing local suction speed, while also preventing sputum blockage. 3. The working end of the inner tube has at least one suction hole with a rounded tip design to avoid damage to the tracheal mucosa during intubation, reducing irritation. Multiple suction holes enhance local suction speed and efficiency, improving sputum clearance and reducing the risk of blockage. Given the high viscosity of sputum, the rounded tip of the tube with multiple suction holes not only cuts the sputum for easier suction but also increases local suction speed and efficiency.

[0016] 4. The cleaning channel and flushing hole are designed to clean the inside of the tube, ensuring its cleanliness and preventing blockage during surgery.

[0017] 5. The inner and outer tubes are connected by a sliding and rotating mechanism. The inner tube can slide and rotate relative to the outer tube. The inner tube can be removed from the outer tube and replaced, while the outer tube remains in the airway as a reusable channel, avoiding tracheal irritation caused by repeated insertion and removal, and improving patient comfort. Attached Figure Description

[0018] Figure 1 This is a schematic diagram of the structure of the novel pulse-assisted suction catheter described in this invention; Figure 2 This is a schematic diagram of the inner tube and connecting structure in this invention; Figure 3 This is a partial internal cross-sectional view of the inner tube and connecting structure in this invention; Figure 4 This is an internal cross-sectional view of the pulse suction device in this invention; Figure 5 This is a schematic diagram of the pulse suction device in this invention; Figure 6 This is a schematic diagram of the outer tube structure in this invention; Figure 7 This is a schematic diagram of the adjustment mechanism in this invention. Detailed Implementation

[0019] The present invention will be further explained below with reference to the accompanying drawings and specific embodiments. Example

[0020] Embodiments of the present invention are described in detail below, examples of which are illustrated in the accompanying drawings, wherein the same or similar reference numerals denote the same or similar elements or elements having the same or similar functions throughout. The embodiments described below with reference to the accompanying drawings are exemplary and intended to explain the present invention, and should not be construed as limiting the present invention.

[0021] like Figure 1 The novel pulse-assisted suction catheter shown includes an inner tube 1 and an outer tube 2. The outer tube 2 is coaxially disposed outside the inner tube 1, and the ends of the two away from the suction head are connected by a connecting mechanism 3. The inner tube 1 can slide and rotate relative to the outer tube 2. Negative pressure suction chambers are formed inside the inner tube 1, between the inner tube 1 and the outer tube 2, and between the inner tube 1 and the connecting mechanism 3. The suction is performed by connecting a negative pressure device through the connection port of the negative pressure connecting mechanism 4 at the rear, thereby realizing the dual-tube suction function. An adjustment mechanism 5 for adjusting the bending direction of the front end of the inner tube 1 is provided behind the connecting mechanism 3. The adjustment mechanism 5 is connected to the inner tube 1 through an adjustment line. It also includes a pulse suction device 6, which is connected to the multi-functional interface 301 of the connecting mechanism 3.

[0022] It should be noted that the load device can be a syringe or other negative pressure source that meets the usage requirements. The multi-functional interface 301 can be connected to a syringe for cleaning or to a suction tube as needed.

[0023] like Figure 4 , Figure 5 The pulse suction device 6 shown includes a connecting drive component 61, a suction tube component 62, a suction power component 63, and a limiting component 64. The suction tube component 62 is disposed within the connecting drive component 61, and the suction power component 63 is disposed within the suction tube component 62. A spring 65 is provided on the outside of the suction tube 62 located inside the connecting drive component 61. After one end of the limiting component 64 passes through the connecting drive component 61, it positions the spring 65 located on the outside of the suction tube 62, so that it is in a stretched state. When the limiting component 64 is removed, the spring 65 contracts, and the connecting drive component 61 will drive the suction power component 63 to suck outward under the drive of the spring 65, realizing secondary pulse suction.

[0024] A connecting pipe is provided between the suction tube 62 and the multi-functional interface 301, and a control valve is provided on the connecting pipe.

[0025] In a preferred embodiment, one end of the connecting drive component 61 is provided with a set of guide tubes, with a gap between the guide tubes. The gap cooperates with the suction power component 63, and the end of the suction power component 63 is provided with an anti-detachment component, the diameter of which is larger than the gap between the two guide tubes. Preferably, the inner side of the guide tube cooperates with the suction power component 63, and in this embodiment, the inner side is preferably arc-shaped.

[0026] In a further preferred embodiment, the working end of the inner tube 1 is provided with a suction hole, and its end is designed with a rounded head. The rounded head design can reduce irritation to the trachea. Considering the high viscosity of sputum, multiple suction holes are provided on the rounded-head tube, which can both cut the sputum for easier suction and increase the local suction speed and efficiency.

[0027] In a further preferred embodiment, the outer tube 2 is provided with a limiting structure 21 for restricting the position of the inner tube 1. For example... Figure 6 The outer tube 2 shown is provided with a set of limiting protrusions, so that the conical end of the connecting mechanism 3 connected to the inner tube 1 can only move between the two limiting protrusions, limiting its stroke and preventing it from moving too far and poking into human tissue.

[0028] In a further preferred embodiment, the connecting mechanism 3 and the inner tube 1 are either an integral design or separate components.

[0029] In a further preferred embodiment, the connecting mechanism 3 includes a first connecting member 31 and a second connecting member 32. The first connecting member 31 is tapered, with one end located at the limiting mechanism 21 of the outer tube 2. The second connecting member 32 is located on the outside of the inner tube 1 and connected by a connecting rib, with its end connected to the first connecting member 31. It should be noted that the connecting mechanism 3 can also employ a clamping structure, using an interference fit material for sealing with the outer tube 2. The inner tube clamping structure can also use male and female fittings for assembly and clamping. This ensures that the inner and outer tubes can maintain a seal during suction while also allowing for forward, backward, and rotational movement.

[0030] In a further preferred embodiment, the second connector 32 is provided with a first channel 321.

[0031] In a further preferred embodiment, the inner tube 1 is provided with a cleaning channel 11 and a flushing hole 12, and the cleaning channel 11 communicates with the first channel 321. The cleaning channel 11 and the flushing hole 12 are provided so that, according to actual needs, the control valve can be opened to connect a syringe to flush the inner tube 1 and keep the cavity clean.

[0032] In a further preferred embodiment, the second channel 101 on the inner tube 1 is used to adjust the routing of the wires.

[0033] In a further preferred embodiment, the outer tube 2 is provided with a drug delivery device 21, which is movable on the outer tube 2. The drug delivery device 21 can coat the outer tube 2 with a hydrophilic aqueous solution or anti-inflammatory drugs (such as chloramphenicol, ambroxol, dexamethasone) or bronchodilators (such as salbutamol) as needed by the patient to reduce airway inflammation, promote sputum clearance and improve airway patency.

[0034] One preferred embodiment is described in the examples, such as... Figure 7 As shown, the adjusting mechanism 5 uses an adjusting bend ring, which has a fixing hole for fixing the adjusting line. During operation, rotating the adjusting mechanism 5 can tighten the adjusting line and bend the working end of the inner tube 1, facilitating omnidirectional suction.

[0035] In a preferred embodiment, the outer tube 2 is provided with graduation markings to clearly indicate the insertion position of the aspiration catheter into the trachea during surgery, ensuring surgical safety. The working method of the novel pulse aspiration catheter described in this embodiment is as follows: Before insertion, the drug delivery device 21 can be used to coat the outer tube 2 with the drug; the tube is inserted according to the set insertion position. The limiting mechanism 21 on the outer tube 2 can limit the range of movement of the inner tube 1 to avoid excessive movement and damage to the patient's tissues. With the control valve closed, one end of the limiting member 64 in the pulse suction device 6 passes through the connecting drive member 61 and positions the spring 65 located outside the suction tube 62, keeping it in a stretched state. At this time, the suction tube 62 remains stationary within the connecting drive member 61, positioned at the first pulse suction position. The negative pressure device 5 at the connection port of the negative pressure connection mechanism 4 begins normal suction operation. Since a negative pressure suction chamber is formed between the inner tube 1 and the outer tube 2, a negative pressure source is achieved during the suction process to realize the effect of dual-tube suction. During the suction process, the adjustment mechanism 5 can be rotated to tighten the adjustment line and bend the inner tube suction head end. At the same time, the inner tube can be rotated and moved back and forth to form an all-round suction structure, realizing all-round suction of the trachea and effectively improving its suction effect. If the tube is blocked or the suction efficiency is reduced during the suction process, the inner tube 1 can be moved back and forth to cut the blocked sputum, or the shape and size of the blocked sputum can be destroyed by rotating or turning the knob adjustment mechanism 5, achieving a triple anti-blockage effect. The control valve can also be opened, initiating the first pulse suction. Pulling the limiting component 64 releases its limit on the spring 63 and suction tube 62, causing the stretched spring 63 to reset. This process drives the connecting drive component 61 upwards, which in turn drives the suction tube 62 and suction power component 63 to achieve a second pulse suction. The instantaneous suction of the dual-tube suction combined with pulse suction increases the instantaneous suction power. If tube blockage occurs, pulse suction can apply an instantaneous unbalanced force to the blockage location, deforming the sputum and allowing it to be suctioned through the suction tube. This is a quadruple anti-blockage system. Under normal suction conditions, pulse suction can also be combined with negative pressure suction to increase the suction speed.

[0036] It should be noted that the two anti-clogging pipe operations can be performed simultaneously.

[0037] Furthermore, during operation, the inner tube 1 can be withdrawn and replaced with the outer tube 2. The outer tube 2 can serve as a channel, reducing the stimulation of repeated cannulation. A cleaning channel is provided on the inner tube, allowing for the injection of saline solution for cleaning. This enables complete cleaning of the inner tube, and cleaning can be performed during aspiration without affecting the suction process. Alternatively, depending on the patient's needs, the outer tube can be removed, and the medication required by the patient can be applied through the drug delivery device before aspiration.

[0038] The above description is only a preferred embodiment of the present invention. It should be noted that those skilled in the art can make several improvements without departing from the principle of the present invention, and these improvements should also be considered within the scope of protection of the present invention.

Claims

1. A novel pulse-assisted aspiration catheter, characterized in that: include: Inner tube (1) and outer tube (2), the outer tube (2) is coaxially arranged on the outside of the inner tube (1), and the two are connected by a connecting mechanism (3) at the end away from the suction head. The inner tube (1) can slide and rotate relative to the outer tube (2). Negative pressure suction chambers are formed in the inner tube (1), between the inner tube (1) and the outer tube (2), and between the inner tube (1) and the connecting mechanism (3). The negative pressure device is connected to the connection port of the negative pressure connecting mechanism (4) at the rear for suction, so as to realize the dual-tube suction function. An adjustment mechanism (5) for adjusting the bending direction of the front end of the inner tube (1) is provided behind the connecting mechanism (3). The adjustment mechanism (5) is connected to the inner tube (1) through an adjustment line. It also includes a pulse suction device (6), which is connected to the multi-functional interface (301) of the connecting mechanism (3).

2. The novel pulse-assisted aspiration catheter according to claim 1, characterized in that: The pulse suction device (6) includes a connecting drive (61), a suction tube (62), a suction power component (63), and a limiting component (64). The suction tube (62) is located inside the connecting drive (61), and the suction power component (63) is located inside the suction tube (62). A spring (65) is provided on the outside of the suction tube (62) located inside the connecting drive (61). After one end of the limiting member (63) passes through the connecting drive (61), it positions the spring (65) located on the outside of the suction tube (62) so that it is in a stretched state. When the limiting member (63) is removed, the spring (65) contracts, and the connecting drive (61) will drive the suction power member (63) to suck outward under the drive of the spring (65) to achieve secondary pulse suction.

3. The novel pulse-assisted aspiration catheter according to claim 2, characterized in that: A connecting pipe is provided between the suction tube (62) and the multi-functional interface (301), and a control valve is provided on the connecting pipe.

4. The novel pulse-assisted aspiration catheter according to claim 1, characterized in that: The working end of the inner tube (1) is provided with a suction hole, and its end is designed with a round head.

5. The novel pulse-assisted aspiration catheter according to claim 1, characterized in that: The outer tube (2) is provided with a limiting structure (21) for restricting the position of the inner tube (1).

6. The novel pulse-assisted aspiration catheter according to claim 1, characterized in that: It includes a first connector (31) and a second connector (32). The first connector (31) is tapered, with one end located at the limiting mechanism (21) of the outer tube (2). The second connector (32) is located on the outside of the inner tube (1) and is connected by a connecting rib. Its end is connected to the first connector (31).

7. The novel pulse-assisted aspiration catheter according to claim 6, characterized in that: The second connector (32) is provided with a first channel (321).

8. The novel pulse-assisted aspiration catheter according to claim 6, characterized in that: The inner tube (1) is provided with a cleaning channel (11) and a rinsing hole (12), and the cleaning channel (11) is connected to the first channel (321).

9. The novel pulse-assisted aspiration catheter according to claim 3, characterized in that: The inner tube (1) has a second channel (101) for adjusting the routing of the wire.

10. The novel pulse-assisted aspiration catheter according to claim 1, characterized in that: The outer tube (2) is provided with a drug delivery device (21), which is movable on the outer tube (2).

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