TCD foaming auxiliary device

Abstract

The utility model discloses a kind of TCD foaming auxiliary devices, it is related to medical instrument technical field, solve the technical problem of low preparation efficiency of existing device contrast medium.The utility model includes foaming cylinder and turbulence generating assembly, the turbulence generating assembly includes at least one helical blade, the helical blade is arranged in the foaming cylinder inside along the foaming cylinder axial direction, the upper and lower ends of the foaming cylinder are connected with syringe and infusion tube respectively, the utility model has the advantages such as good foaming efficiency, foaming uniformity.

Description

Technical Field

[0001] This utility model belongs to the field of medical device technology, specifically relating to a TCD foaming auxiliary device. Background Technology

[0002] The transcranial Doppler (TCD) bubble test is a monitoring method that uses intravenous injection of a contrast agent and transcranial Doppler ultrasound to monitor intracranial arterial blood flow. The current TCD bubble test procedure uses a three-way stopcock connected to two syringes, with the other end connected to an intravenous needle. One syringe is used to draw 1 ml of air, while the other syringe draws 9 ml of normal saline and a small amount of the patient's blood. The air, normal saline, and blood are mixed evenly by pushing the two syringes back and forth. This process is called preparing hand-vibrated normal saline. The prepared hand-vibrated normal saline is then injected as a contrast agent to check whether the patient has a right-to-left shunt in the heart.

[0003] However, this method has the following drawbacks: First, the preparation of hand-vibrated saline solution generates a lot of pressure, and the syringe is prone to slippage, causing liquid to spray out; second, hand-vibrated saline solution requires about 30 back-and-forth pushes, which takes a long time, and patients often need to perform and maintain the standard Valsalva maneuver before injection, which makes cooperation difficult.

[0004] In view of the problems existing in the current device, it is necessary to study a foaming auxiliary device with higher contrast agent preparation efficiency. Utility Model Content

[0005] This invention provides a TCD foaming auxiliary device, which aims to solve the technical problem of low contrast agent preparation efficiency in existing devices.

[0006] To solve the aforementioned technical problems, the present invention adopts the following technical solution:

[0007] A TCD foaming auxiliary device includes a foaming cylinder and a turbulence generating component.

[0008] The turbulence generating component includes at least one helical blade, which is disposed inside the foaming cylinder along the foaming cylinder. The upper and lower ends of the foaming cylinder are respectively connected to a syringe and an infusion tube.

[0009] In this invention, it should be noted that the air and saline solution are uniformly mixed by the spiral blades. When the saline solution is injected into the foaming cylinder, the liquid is obstructed by the spiral blades, which changes the flow direction and causes a change in flow velocity, thereby forming turbulence. During this process, bubbles are generated and mixed with the liquid, thereby achieving uniform and rapid foaming. The mixed liquid is discharged through the infusion tube and enters the human body.

[0010] Preferably, the turbulence generating component further includes an upper baffle and a lower baffle, the helical blade is disposed between the upper baffle and the lower baffle, and the lower baffle has several through holes.

[0011] After adopting this technical solution, it should be noted that the upper and lower baffles improve the stability and strength of the spiral blades when subjected to impact. The lower baffle is provided with several through holes, which serve to break up large air bubbles and reduce turbulence intensity, making the fluid flow more stable so as to be introduced into the patient's body and reduce the impact on the patient.

[0012] Preferably, the inner edges of the upper and lower ends of the spiral blade are connected to the outer sides of the upper baffle and the lower baffle, respectively, and the outer edge of the spiral blade is connected to the inner wall of the foaming cylinder.

[0013] After adopting this technical solution, it should be noted that after the liquid enters the foaming cylinder, it will flow through the gap between the baffle and the inner wall of the foaming cylinder and come into contact with the spiral blades. Since the cross-sectional area of ​​the liquid decreases when it enters this gap, its flow velocity will increase, thereby generating turbulence better and achieving higher quality mixing.

[0014] Preferably, there are two helical blades, which are symmetrically arranged on both sides of the upper baffle and the lower baffle.

[0015] After adopting this technical solution, it should be noted that the two helical blades rotate in opposite directions, and the fluid interferes with each other when it flows through them. This interaction can further enhance the turbulence of the fluid and improve the mixing efficiency and quality.

[0016] Preferably, the foaming cylinder is further provided with a flow guide block, which is located above the upper baffle and has at least one flow guide hole.

[0017] The flow guide hole is inclined, and the inclination direction corresponds to the helical direction of the helical blade.

[0018] After adopting this technical solution, it should be noted that the flow through the guide hole can improve the fluid transport efficiency and fix the fluid flow direction, and change the flow direction when the liquid meets the spiral blade, so that it can better interact with the spiral blade to generate turbulence; in addition, there is a gap between the guide block and the upper baffle to ensure that the fluid flows through the spiral blade.

[0019] Preferably, the guide block has an internal cavity, an inlet hole at the upper end of the guide block, a guide cone inside the cavity, and several guide grooves evenly distributed along the surface of the guide cone, which penetrates the bottom end of the guide block.

[0020] The guide groove is spiral-shaped, and the direction of the guide groove corresponds to the direction of the spiral blade.

[0021] After adopting this technical solution, it should be noted that when the liquid is injected into the cavity through the liquid inlet hole, the flow direction of the liquid is guided by the flow guide groove so that the flow direction of the liquid corresponds to the rotation direction of the spiral blade. As the liquid flow rate will increase after flowing out through the flow guide groove, the two work together to achieve a better mixing effect with the subsequent interaction of the spiral blade.

[0022] Preferably, the lower end of the foaming cylinder has a liquid outlet hole, the lower baffle is located inside the liquid outlet hole, and the lower baffle is connected to the inner wall of the liquid outlet hole.

[0023] Preferably, the lower end of the foaming cylinder is connected to a connecting cylinder, the connecting cylinder is in communication with the foaming cylinder, and an annular connecting groove is opened at the end of the connecting cylinder away from the foaming cylinder. A first thread is provided on the side wall of the annular connecting groove, and the infusion tube can be detachably connected through the connecting groove and the first thread.

[0024] After adopting this technical solution, it should be noted that the infusion tube and the connecting cylinder are connected by threads. The threaded connection is used to prevent the infusion tube from slipping and potentially causing liquid to spray.

[0025] Preferably, the upper end of the foaming tube is provided with a connecting part for connecting a syringe.

[0026] The steps for using this utility model are as follows:

[0027] Device assembly: Insert the syringe into the upper end of the foaming cylinder and tighten the infusion tubing to the connecting cylinder;

[0028] Foaming: The saline solution in the syringe is first guided by a flow guide block to increase its flow rate and establish a certain flow direction. Then, the liquid flows through the gap between the upper baffle and the connecting cylinder, further increasing the pressure and flow rate. When it passes through two spiral blades with opposite directions of rotation, they interfere with each other, causing the fluid to form turbulence and generate bubbles, thus achieving uniform and rapid foaming. Afterward, the liquid passes through the through hole, the large bubbles are broken up, and the turbulence intensity is reduced, making the fluid flow more stable so that it can be injected into the patient and minimize the impact on the patient.

[0029] In summary, due to the adoption of the above technical solution, the beneficial effects of this utility model are:

[0030] 1. The present invention provides a TCD foaming auxiliary device, which sets up a spiral blade to obstruct the fluid and cause the fluid to change its flow direction along the spiral blade and induce a change in flow velocity, thereby forming turbulence. During this process, bubbles will be generated and mixed with the liquid, thereby achieving uniform and rapid foaming.

[0031] 2. The present invention provides a TCD foaming auxiliary device, which disperses large air bubbles and reduces turbulence intensity by setting several through holes on the lower baffle, making the fluid flow more stable so as to be introduced into the patient's body and reduce the impact on the patient.

[0032] 3. The TCD foaming auxiliary device provided by this utility model, by setting two spiral blades with opposite rotation directions, generates mutual interference when the fluid flows through them, thereby further enhancing the turbulence of the fluid and improving the mixing efficiency and quality.

[0033] 4. The present invention provides a TCD foaming auxiliary device, which guides the fluid by setting a guide block to achieve a better mixing effect. Attached Figure Description

[0034] This utility model will be described by way of example and with reference to the accompanying drawings, wherein:

[0035] Figure 1 This is a schematic diagram of the overall structure of this utility model;

[0036] Figure 2 This is an overall sectional view of the present invention;

[0037] Figure 3 This is a schematic diagram of the turbulence generating component of this utility model;

[0038] Figure 4 This is a schematic diagram of the flow guide block structure of this utility model;

[0039] Figure 5 This is a schematic diagram of one embodiment of the present utility model;

[0040] Figure 6 This utility model Figure 5 Internal structure diagram;

[0041] Figure 7 This is a schematic diagram of the present invention after connecting the syringe and the infusion tube.

[0042] Figure label:

[0043] 1-Connecting cylinder, 2-Foaming cylinder, 201-Connecting part, 3-Guide block, 301-Guide hole, 302-Guide cone, 303-Guide groove, 4-Turbulence generating component, 401-Helical blade, 402-Upper baffle, 403-Lower baffle, 405-Slider, 5-Connecting groove, 6-First thread, 7-Through hole, 8-Injector, 9-Infusion tube. Detailed Implementation

[0044] To make the objectives, technical solutions, and advantages of the embodiments of this application clearer, the technical solutions in the embodiments of this application will be clearly and completely described below in conjunction with the embodiments and accompanying drawings. Obviously, the described embodiments are only a part of the embodiments of this application, and not all of the embodiments. The components of the embodiments of this application described and marked in the accompanying drawings can be arranged and designed in various different configurations. Therefore, the following detailed description of the embodiments of this application provided in the accompanying drawings is not intended to limit the scope of the claimed application, but merely represents selected embodiments of this application. All other embodiments obtained by those skilled in the art based on the embodiments of this application without inventive effort are within the scope of protection of this application.

[0045] In the description of the embodiments of this application, it should be noted that the terms "upper," "lower," "left," "right," "vertical," "horizontal," "inner," and "outer," etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings, or the orientation or positional relationship commonly used when the utility product is in use. They are only for the convenience of describing this application and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this application. In addition, the terms "first," "second," and "third," etc., are only used to distinguish descriptions and should not be construed as indicating or implying relative importance.

[0046] The following is combined with Figures 1-7 This utility model will be described in detail.

[0047] Example 1

[0048] A TCD foaming auxiliary device, such as Figure 1 , Figure 2 , Figure 7 As shown, it includes a foaming cylinder 2 and a turbulence generating component 4.

[0049] The turbulence generating component 4 includes at least one helical blade 401, which is disposed inside the foaming cylinder 2 along the foaming cylinder 2. The upper and lower ends of the foaming cylinder 2 are respectively connected to a syringe 8 and an infusion tube 9.

[0050] The lower end of the foaming cylinder 2 is connected to a connecting cylinder 1, which communicates with the foaming cylinder 2. The end of the connecting cylinder 1 away from the foaming cylinder 2 has an annular connecting groove 5. The side wall of the annular connecting groove 5 is provided with a first thread 6. The infusion tube can be detachably connected through the connecting groove 5 and the first thread 6.

[0051] The upper end of the foaming cylinder 2 is provided with a connecting part 201 for connecting the syringe 8.

[0052] In this embodiment, the air and saline solution are uniformly mixed by the spiral blade 401. When the saline solution is injected into the foaming cylinder 2, the liquid is obstructed by the spiral blade 401, which changes the flow direction and causes a change in flow velocity, thereby forming turbulence. During this process, bubbles will be generated and mixed with the liquid, thereby achieving uniform and rapid foaming. The mixed liquid will be discharged through the outlet pipe.

[0053] Example 2

[0054] The difference between this embodiment and Embodiment 1 is that, as Figure 2 , Figure 3 As shown, the turbulence generating component 4 also includes an upper baffle 402 and a lower baffle 403, the helical blade 401 is disposed between the upper baffle 402 and the lower baffle 403, and the lower baffle 403 has a plurality of through holes 7.

[0055] The inner edges of the upper and lower ends of the spiral blade 401 are connected to the outer sides of the upper baffle 402 and the lower baffle 403, respectively, and the outer edge of the spiral blade 401 is connected to the inner wall of the foaming cylinder 2.

[0056] The lower end of the foaming cylinder 2 has a liquid outlet hole, and the lower baffle 403 is located inside the liquid outlet hole and is connected to the inner wall of the liquid outlet hole.

[0057] In this embodiment, the baffle improves the stability and strength of the spiral blade 401 when subjected to impact. The lower baffle 403 is provided with several through holes 7, which serve to break up large air bubbles and reduce turbulence intensity, making the fluid flow more stable so that it can be introduced into the patient's body and reduce the impact on the patient.

[0058] Furthermore, in this embodiment, after the liquid enters the foaming cylinder 2, it will flow through the gap between the baffle and the inner wall of the foaming cylinder 2 and come into contact with the spiral blade 401. Since the cross-sectional area of ​​the liquid decreases when it enters this gap, its flow rate will increase, thereby generating turbulence better and achieving higher quality mixing.

[0059] Example 3

[0060] The difference between this embodiment and Embodiment 2 is that, as Figure 2 , Figure 3 As shown, there are two helical blades 401, which are symmetrically arranged on both sides of the upper baffle 402 and the lower baffle 403. The two helical blades 401 rotate in opposite directions, and the fluid interferes with each other when it flows through them. This interaction can further enhance the turbulence of the fluid and improve the mixing efficiency and quality.

[0061] Example 4

[0062] The difference between this embodiment and embodiment 3 is that, as Figure 4 As shown, the foaming cylinder 2 is also provided with a flow guide block 3, which is located above the upper baffle 402, and at least one flow guide hole 301 is provided through the flow guide block 3.

[0063] The guide hole 301 is inclined, and the inclination direction corresponds to the helical direction of the helical blade 401.

[0064] In this embodiment, the flow through the guide hole 301 can improve the fluid transport efficiency and fix the fluid flow direction, and change the flow direction when the liquid meets the spiral blade 401, so that it can interact with the spiral blade 401 better to generate turbulence; in addition, there is a gap between the guide block 3 and the upper baffle 402 to ensure that the fluid flows through the spiral blade 401.

[0065] Example 5

[0066] The difference between this embodiment and embodiment 4 is that, as Figure 5 , Figure 6 As shown, the guide block 3 has a cavity inside, a liquid inlet hole at the upper end of the guide block 3, a guide groove 302 inside the cavity, and a plurality of guide grooves 303 evenly distributed along the surface of the guide groove 302, the guide grooves 303 penetrating the bottom end of the guide block 3.

[0067] The guide groove 303 is spiral in shape, and the direction of rotation of the guide groove 303 corresponds to the direction of rotation of the spiral blade 401.

[0068] In this embodiment, after the liquid is injected into the cavity through the liquid inlet hole, the liquid is guided by the flow guide 303 so that the flow direction of the liquid corresponds to the rotation direction of the spiral blade 401. Since the flow rate of the liquid will increase after flowing out through the flow guide 303, the two work together to achieve a better mixing effect with the subsequent interaction with the spiral blade 401.

[0069] The steps for using this utility model are as follows:

[0070] Device assembly: Insert syringe 8 into the upper end of foaming cylinder 2, and tighten infusion tube 9 to connecting cylinder 1;

[0071] Foaming: The saline solution in syringe 8 is first guided by the guide block 3 to increase its flow rate and form a certain flow direction. Then, the liquid flows through the gap between the upper baffle 402 and the connecting cylinder 1, further increasing the pressure and flow rate. When it passes through the two spiral blades 401 with opposite rotation, it causes mutual interference, which makes the fluid turbulent and generates bubbles, thereby achieving uniform and rapid foaming. Afterward, the liquid passes through the through hole 7, the large bubbles are broken up, and the turbulence intensity is reduced, making the fluid flow more stable so that it can be injected into the patient and reduce the impact on the patient.

[0072] The above description of the disclosed embodiments enables those skilled in the art to make or use the present invention. Various modifications to these embodiments will be readily apparent to those skilled in the art, and the general principles defined herein may be implemented in other embodiments without departing from the spirit or scope of the present invention. Therefore, the present invention is not to be limited to the embodiments shown herein, but is to be accorded the widest scope consistent with the principles and novel features disclosed herein.

Claims

1. A TCD foaming auxiliary device, characterized in that, Includes a foaming cylinder (2) and a turbulence generating component (4), The turbulence generating component (4) includes at least one helical blade (401), which is disposed inside the foaming cylinder (2) along the axial direction of the foaming cylinder (2). The upper and lower ends of the foaming cylinder (2) are respectively connected to a syringe (8) and an infusion tube (9).

2. The TCD foaming auxiliary device according to claim 1, characterized in that: The turbulence generating component (4) further includes an upper baffle (402) and a lower baffle (403), the helical blade (401) is disposed between the upper baffle (402) and the lower baffle (403), and the lower baffle (403) has several through holes (7).

3. The TCD foaming auxiliary device according to claim 2, characterized in that: The inner edges of the upper and lower ends of the spiral blade (401) are connected to the outer sides of the upper baffle (402) and the lower baffle (403) respectively, and the outer edge of the spiral blade (401) is connected to the inner wall of the foaming cylinder (2).

4. The TCD foaming auxiliary device according to claim 2, characterized in that: Two helical blades (401) are provided, and the two helical blades (401) are symmetrically arranged on both sides of the upper baffle (402) and the lower baffle (403).

5. The TCD foaming auxiliary device according to claim 2, characterized in that: The foaming cylinder (2) is also provided with a flow guide block (3), which is located above the upper baffle (402). At least one flow guide hole (301) is provided through the flow guide block (3).

6. The TCD foaming auxiliary device according to claim 5, characterized in that: The guide hole (301) is inclined, and the inclination direction corresponds to the helical direction of the helical blade (401).

7. The TCD foaming auxiliary device according to claim 5, characterized in that: The guide block (3) has a cavity inside, and the upper end of the guide block (3) has a liquid inlet hole. The cavity has a guide cone (302), and a plurality of guide grooves (303) are evenly distributed along the surface of the guide cone (302). The guide grooves (303) penetrate the bottom end of the guide block (3).

8. The TCD foaming auxiliary device according to claim 7, characterized in that: The guide groove (303) is spiral-shaped, and the direction of rotation of the guide groove (303) corresponds to the direction of rotation of the spiral blade (401).

9. A TCD foaming auxiliary device according to claim 2, characterized in that: The lower end of the foaming cylinder (2) has a liquid outlet hole, the lower baffle (403) is located inside the liquid outlet hole, and the lower baffle (403) is connected to the inner wall of the liquid outlet hole.

10. A TCD foaming auxiliary device according to any one of claims 1-9, characterized in that: The lower end of the foaming cylinder (2) is connected to a connecting cylinder (1), which communicates with the foaming cylinder (2). The end of the connecting cylinder (1) away from the foaming cylinder (2) has an annular connecting groove (5). The side wall of the annular connecting groove (5) is provided with a first thread (6). The infusion tube can be detachably connected through the connecting groove (5) and the first thread (6).

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