Anti-reverse directing device for cardiovascular intervention

Abstract

The utility model relates to medical equipment technical field, especially a kind of anti-reverse orientation device for cardiovascular intervention.The utility model discloses an anti-reverse orientation device for cardiovascular intervention including puncture needle and guide tube, the guide tube is equipped with the guide channel through its both ends, one end of the guide channel is equipped with the functional cavity larger than its diameter, one end of the puncture needle is connected with one end of the guide tube and is communicated, the part of one end of the guide channel close to the functional cavity is equipped with the sealing structure that can be supplied to guide wire, the functional cavity side wall is equipped with medicine injection interface and negative pressure interface.Advantages: simple and reasonable structure design, convenient operation, can satisfy the function of injection, suction, guide wire and guide to enter, overall miniaturization design, can effectively prevent the reverse flow caused by displacement and other factors during cardiovascular intervention puncture process.

Description

Technical Field

[0001] This utility model relates to the field of medical device technology, and in particular to an anti-reverse guidance device for cardiovascular intervention. Background Technology

[0002] Interventional therapy refers to a non-surgical treatment method that uses catheters under the guidance of medical imaging equipment to treat diseases. Currently, interventional therapy has become one of the three major modern medical treatments, alongside traditional medical drug therapy and surgical treatment. Cardiovascular diseases are the most widely used area for interventional therapy. Compared with traditional medical drug therapy, interventional therapy achieves clinical effects that previous drug therapies could not achieve, and in some cases, it has the trend of replacing surgery. For example, radiofrequency ablation treats paroxysmal supraventricular tachycardia, atrial fibrillation, atrial flutter, various premature beats, and ventricular tachycardia; occlusion devices treat congenital heart diseases such as patent ductus arteriosus and central atrial septal defect (Type II); balloon angioplasty treats mitral stenosis and pulmonary valve stenosis; stent implantation treats coronary heart disease and various vascular stenosis; pacemakers treat bradycardia, prevent sudden death, and treat heart failure; and some diseases can even be completely cured.

[0003] Clinically, the puncture procedure generally involves first inserting a puncture needle, then inserting a guidewire along the needle into the blood vessel, withdrawing the needle, and then placing a catheter along the guidewire. Medications or contrast agents are then injected through the catheter. During the procedure, blood backflow may occur during guidewire insertion, causing bleeding. Currently, existing puncture devices have a syringe-like design, injecting medication by pushing. However, this injection process can easily cause needle displacement and is inconvenient to perform.

[0004] Therefore, it is necessary to develop an anti-reverse guidance device for cardiovascular intervention to overcome the above-mentioned technical problems. Utility Model Content

[0005] The technical problem to be solved by this utility model is to provide an anti-reverse guidance device for cardiovascular intervention, which effectively overcomes the defects of the prior art.

[0006] The technical solution of this utility model to solve the above-mentioned technical problems is as follows:

[0007] A cardiovascular interventional anti-retrograde guiding device includes a puncture needle and a guide tube. The guide tube has a guide channel extending through both ends. One end of the guide channel has a functional cavity with a diameter larger than the guide channel. One end of the puncture needle is connected to and communicates with one end of the guide tube. The part of one end of the guide channel near the functional cavity has a sealing structure that allows a guide wire to pass through. The side wall of the functional cavity has a drug injection port and a negative pressure port.

[0008] Based on the above technical solution, the present invention can be further improved as follows.

[0009] Furthermore, the other end of the aforementioned guide channel is threaded and fitted with a sealing cap.

[0010] Furthermore, the aforementioned sealing structure is a silicone rubber membrane.

[0011] Furthermore, the aforementioned sealing structure includes a conical silicone rubber sleeve, the tip of which faces one end of the aforementioned guide channel, and the tip of which includes a plurality of circumferentially distributed sealing petals that are close to each other.

[0012] Furthermore, the aforementioned injection port is equipped with a first one-way valve.

[0013] Furthermore, the aforementioned negative pressure interface is equipped with a control valve.

[0014] Furthermore, the end of the puncture needle near the guide tube is equipped with a controller that can open or close its internal channel.

[0015] Furthermore, the puncture needle has a spherical cavity at one end near the guide tube. The controller includes a sphere sealed in the spherical cavity and a columnar operating knob. The operating knob is sealed through the side wall of the spherical cavity and rotatably assembled with the spherical cavity. The operating knob is connected to the sphere. The sphere has functional channels through both ends. The sphere can be rotated to communicate with the internal cavity of the puncture needle through the functional channels, or to block the internal cavity of the puncture needle.

[0016] Furthermore, the other end of the aforementioned puncture needle is designed as a beveled end.

[0017] Furthermore, the aforementioned puncture needle is fitted with an absorbent pad.

[0018] The beneficial effects of this utility model are: the structure is simple and reasonable, the operation is convenient, and it can meet the functions of injection, aspiration and guide wire insertion. The overall miniaturized design can effectively prevent backflow caused by displacement and other factors during cardiovascular interventional puncture. Attached Figure Description

[0019] Figure 1 This is a schematic diagram of the anti-reverse guidance device for cardiovascular intervention of this utility model;

[0020] Figure 2 This is a schematic diagram of another embodiment of the anti-reverse guidance device for cardiovascular intervention of this utility model;

[0021] Figure 3 This is a schematic diagram of the sealing structure in the anti-reverse guidance device for cardiovascular intervention of this utility model;

[0022] Figure 4 This is a schematic diagram of another embodiment of the anti-reverse guidance device for cardiovascular intervention of this utility model.

[0023] The attached diagram lists the components represented by each number as follows:

[0024] 1. Puncture needle; 2. Guide tube; 3. Sealing structure; 11. Absorption pad; 21. Guide channel; 22. Functional chamber; 23. Injection port; 24. Negative pressure port; 25. Sealing cap; 26. Spherical bladder; 41. Sphere; 42. Operating knob; 311. Sealing flap; 231. First one-way valve; 241. Control valve; 411. Functional channel. Detailed Implementation

[0025] The principles and features of this utility model are described below with reference to the accompanying drawings. The examples given are only for explaining this utility model and are not intended to limit the scope of this utility model.

[0026] Example

[0027] like Figure 1 , 2 As shown, the cardiovascular interventional anti-retrograde guiding device of this embodiment includes a puncture needle 1 and a guide tube 2. The guide tube 2 is provided with a guide channel 21 that runs through both ends of the guide tube. One end of the guide channel 21 is provided with a functional cavity 22 with a diameter larger than the guide channel 22. One end of the puncture needle 1 is connected to and communicates with one end of the guide tube 2. One end of the guide channel 21 is provided with a sealing structure 3 that allows a guide wire to pass through near the functional cavity 22. The side wall of the functional cavity 22 is provided with a drug injection port 23 and a negative pressure port 24.

[0028] In this embodiment, the anti-backflow guiding device for cardiovascular intervention is used by inserting the puncture needle 1 into the blood vessel. Due to the design of the sealing structure 3, blood will not flow back when the guidewire passes through the sealing structure 3. Simultaneously, medication can be injected through the injection port 23 after puncture. During the puncture process, a small negative pressure is applied through the negative pressure port 24 to observe whether blood enters the functional chamber 22, thus determining whether the puncture has entered the blood vessel. The overall structure is simple and reasonable, easy to operate, and can meet the functions of injection, aspiration, and guidewire insertion. The overall miniaturized design effectively prevents backflow caused by displacement or other factors during cardiovascular intervention puncture.

[0029] In this embodiment, the long and straight guide channel 21 can provide good guidance for the entry of the guide wire, so that the guide wire can enter stably.

[0030] In this embodiment, the other end of the guide channel 21 is threaded and fitted with a sealing cap 25. The sealing cap 25 is a disposable product that seals the port of the guide channel 21 at the factory and is removed after puncture.

[0031] In this embodiment, the sealing structure 3 includes at least the following two structural forms:

[0032] 1) such as Figure 1 As shown, the sealing structure 3 is a silicone rubber membrane. The guidewire passes through this silicone rubber membrane, and utilizing the properties of the silicone rubber membrane, it wraps around the guidewire after it passes through, preventing blood backflow.

[0033] 2) such as Figure 2 and 3 As shown, the sealing structure 3 includes a conical silicone rubber sleeve, the tip of which faces one end of the guide channel 21, and its tip includes multiple circumferentially distributed sealing flaps 311, which are close to each other. In this design, when the guidewire has not passed through the sealing structure 3, the multiple sealing flaps 311 are in a close-to-each-way state. When the guidewire is inserted, the multiple sealing flaps 311 open under the pushing action of the guidewire, but remain tightly attached to the outer periphery of the guidewire to form a seal and prevent blood backflow.

[0034] It should be emphasized that the conical silicone rubber sleeve also allows the guidewire to move correctly along the inner conical surface after it is inserted.

[0035] In this embodiment, the injection port 23 is equipped with a first one-way valve 231. This first one-way valve 231 only allows injection and will not cause backflow.

[0036] In this embodiment, the negative pressure port 24 is equipped with a control valve 241. The control valve 241 can control the opening and closing of the negative pressure port 24, opening when negative pressure is needed and closing when not needed, thus effectively sealing the negative pressure port 24.

[0037] In this embodiment, the end of the puncture needle 1 near the guide tube 2 is provided with a controller that can open or close its internal channel. This controller allows for temporary control of opening or closing the internal cavity of the puncture needle 1, enabling flexible operation according to actual needs in emergency situations.

[0038] As a preferred implementation method, such as Figure 4As shown, the puncture needle 1 has a spherical cavity 26 at one end near the guide tube 2. The controller includes a sphere 41 sealed in the spherical cavity 26 and a columnar operating knob 42. The operating knob 42 is sealed through the side wall of the spherical cavity 26 and is rotatably assembled with the spherical cavity 26. The operating knob 42 is connected to the sphere 41. The sphere 41 has a functional channel 411 through both ends. The sphere 41 can be rotated to the point where the functional channel 411 communicates with the inner cavity of the puncture needle 1, or rotated to block the inner cavity of the puncture needle 1.

[0039] In the above implementation scheme, rotating the operating knob 42 causes the ball 41 to rotate, which can make the functional channel 411 connect with or be misaligned with the inner cavity of the puncture needle 1, allowing the guide wire to enter when it connects. The diameter of the functional channel 411 is the same as the inner cavity of the puncture needle 1.

[0040] In this embodiment, the other end of the puncture needle 1 is set as a beveled end.

[0041] In this embodiment, the puncture needle 1 is fitted with an absorbent pad 11. During puncture, the absorbent pad 11 can move along the puncture needle 1 and adhere to the puncture site, absorbing the blood seeping from the puncture site.

[0042] In the description of this utility model, it should be understood that the terms "center", "longitudinal", "transverse", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", "axial", "radial", "circumferential", etc., indicating the orientation or positional relationship are based on the orientation or positional relationship shown in the accompanying drawings, and are only for the convenience of describing this utility model and simplifying the description, and are not intended to indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of this utility model.

[0043] Furthermore, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of indicated technical features. Thus, a feature defined as "first" or "second" may explicitly or implicitly include at least one of that feature. In the description of this utility model, "a plurality of" means at least two, such as two, three, etc., unless otherwise explicitly specified.

[0044] In this utility model, unless otherwise explicitly specified and limited, the terms "installation," "connection," "joining," and "fixing," etc., should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral part; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; they can refer to the internal communication of two components or the interaction between two components, unless otherwise explicitly limited. Those skilled in the art can understand the specific meaning of the above terms in this utility model according to the specific circumstances.

[0045] In this utility model, unless otherwise explicitly specified and limited, "above" or "below" the second feature can mean that the first feature is in direct contact with the second feature, or that the first feature is in indirect contact through an intermediate medium. Furthermore, "above," "on top of," and "over" the second feature can mean that the first feature is directly above or diagonally above the second feature, or simply that the first feature is at a higher horizontal level than the second feature. "Below," "below," and "under" the second feature can mean that the first feature is directly below or diagonally below the second feature, or simply that the first feature is at a lower horizontal level than the second feature.

[0046] In the description of this specification, the references to terms such as "one embodiment," "some embodiments," "example," "specific example," or "some examples," etc., indicate that a specific feature, structure, material, or characteristic described in connection with that embodiment or example is included in at least one embodiment or example of the present invention. In this specification, the illustrative expressions of the above terms do not necessarily refer to the same embodiment or example. Furthermore, the specific features, structures, materials, or characteristics described may be combined in any suitable manner in one or more embodiments or examples. Moreover, without contradiction, those skilled in the art can combine and integrate the different embodiments or examples described in this specification, as well as the features of different embodiments or examples.

[0047] Although embodiments of the present invention have been shown and described above, it is understood that the above embodiments are exemplary and should not be construed as limiting the present invention. Those skilled in the art can make changes, modifications, substitutions and variations to the above embodiments within the scope of the present invention.

Claims

1. A cardiovascular interventional anti-reverse guidance device, characterized in that: It includes a puncture needle (1) and a guide tube (2). The guide tube (2) has a guide channel (21) that runs through both ends of it. One end of the guide channel (21) has a functional cavity (22) with a diameter larger than its diameter. One end of the puncture needle (1) is connected to and communicates with one end of the guide tube (2). One end of the guide channel (21) near the functional cavity (22) has a sealing structure (3) that allows a guide wire to pass through. The side wall of the functional cavity (22) has a drug injection port (23) and a negative pressure port (24).

2. The anti-reverse guidance device for cardiovascular intervention according to claim 1, characterized in that: The other end of the guide channel (21) is threaded and threaded with a sealing cap (25).

3. The anti-reverse guidance device for cardiovascular intervention according to claim 1, characterized in that: The sealing structure (3) is a silicone rubber membrane.

4. The anti-reverse guidance device for cardiovascular intervention according to claim 1, characterized in that: The sealing structure (3) includes a conical silicone rubber sleeve with the tip of the conical sleeve facing one end of the guide channel (21), and the tip of the silicone rubber sleeve includes a plurality of circumferentially distributed sealing petals (311) that are close to each other.

5. The anti-reverse guidance device for cardiovascular intervention according to claim 1, characterized in that: The injection port (23) is equipped with a first one-way valve (231).

6. The anti-reverse guidance device for cardiovascular intervention according to claim 1, characterized in that: The negative pressure port (24) is equipped with a control valve (241).

7. The anti-reverse guidance device for cardiovascular intervention according to claim 1, characterized in that: The puncture needle (1) is provided with a controller at one end near the guide tube (2) that can open or close its internal channel.

8. The anti-reverse guidance device for cardiovascular intervention according to claim 7, characterized in that: The puncture needle (1) has a spherical cavity (26) at one end near the guide tube (2). The controller includes a sphere (41) sealed in the spherical cavity (26) and a columnar operating knob (42). The operating knob (42) is sealed through the side wall of the spherical cavity (26) and is rotatably assembled with the spherical cavity (26). The operating knob (42) is connected to the sphere (41). The sphere (41) has a functional channel (411) through both ends. The sphere (41) can be rotated to communicate with the internal cavity of the puncture needle (1) through the functional channel (411), or rotated to block the internal cavity of the puncture needle (1).

9. A cardiovascular interventional anti-reverse guidance device according to any one of claims 1 to 8, characterized in that: The other end of the puncture needle (1) is set as an oblique cut port.

10. A cardiovascular interventional anti-reverse guidance device according to any one of claims 1 to 8, characterized in that: The puncture needle (1) is fitted with an absorbent pad (11).

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