Thrombus filtering device

Abstract

The present invention discloses a thrombus filtering device, comprising a main body and a screw cap, wherein the screw cap is threadedly connected to the main body, a catheter interface is provided at the front end of the screw cap, and a negative pressure interface is provided at the rear end of the main body, wherein the diameter of the negative pressure interface is a gradient structure, the diameter of the outer end is the smallest, and a serrated airtight ring is provided on the outer peripheral surface of the negative pressure interface; a plurality of filter layers are provided at intervals in the middle of the axial direction inside the main body, wherein the filter layers are composed of a plurality of grid cylinders parallel to each other, and the angle between the grid cylinders of two adjacent filter layers is 90 degrees. The multi-layer filter layers arranged at intervals in the main body of the present invention are formed into a discontinuous grid mesh by axial extension, and when a mixture of thrombus and blood water flows through the multi-layer filter layers together, the discontinuous grid mesh does not affect the passage of blood water, but intercepts the thrombus and causes the thrombus to adhere to the multi-layer filter layers, and the measurement work can be carried out without removing the filtered thrombus, and the thrombus filtering, extraction, and measurement can be completed in one step, and the operation is very convenient, which greatly improves the work efficiency.

Description

Technical Field

[0001] The present invention relates to a filtering device, in particular to a thrombus filtering device. Background Art

[0002] Clinically, after removing a thrombus from a patient's blood vessel, the length of the thrombus needs to be measured to assess the severity of the patient's current thrombus. Currently, when removing a thrombus, an aspirator is used to suck out the thrombus. While sucking out the thrombus, some blood and liquid are also sucked out. The thrombus and blood are mixed together and eventually caught in a container. The blood and liquid are then filtered out, and the remaining thrombus is measured. This series of steps, such as filtering the blood and liquid, extracting the thrombus, and then measuring its size, is too cumbersome, difficult to operate, and inefficient. Summary of the Invention

[0003] In response to the problems existing in the above-mentioned prior art, the present invention provides a thrombus filtering device, which has simple thrombus filtering, extraction and measurement steps, is easy to operate, and improves work efficiency.

[0004] To achieve the above-mentioned purpose, the present invention provides the following technical solutions: a thrombus filtering device, comprising a main body with a hollow and transparent interior, a screw cap provided at the front end of the main body, the screw cap being threadedly connected to the main body, a catheter interface provided at the front end of the screw cap, and a negative pressure interface provided at the rear end of the main body. The diameter of the negative pressure interface is a gradient structure, the diameter of the outer end is the smallest, and a serrated airtight ring is provided on the outer peripheral surface of the negative pressure interface; multiple filter layers are spaced apart in the middle of the axial direction inside the main body, and the filter layer is composed of multiple grid cylinders parallel to each other, and the angle between the grid cylinders of two adjacent filter layers is 90 degrees.

[0005] Furthermore, the catheter interface is an ohmic connector, which is convenient for connection with the catheter.

[0006] Furthermore, the main body is marked with scale lines.

[0007] Furthermore, the distance between two adjacent grid cylinders on the same filter layer is twice the radius of the grid cylinder, which can meet the requirements of intercepting thrombus while maximizing the thrombus passing rate to obtain the accuracy of measuring thrombus length.

[0008] Furthermore, the distance between two adjacent filter layers is twice the radius of the grid cylinder, which can meet the requirements of intercepting thrombus while maximizing the passing rate of thrombus to obtain the accuracy of measuring thrombus length.

[0009] Compared with the prior art, the multi-layer filter layers arranged at intervals in the main body of the present invention extend axially to form a discontinuous grid mesh. When the mixture of thrombus and blood water flows through the multi-layer filter layers together, the discontinuous grid mesh does not affect the passage of blood water, but will intercept the thrombus and make the thrombus adhere to the multi-layer filter layers. There is no need to remove the filtered thrombus to perform measurement. The filtering, extraction and measurement of the thrombus can be completed in one step, and the operation is very convenient, which greatly improves work efficiency. When the thrombus needs to be removed, the screw cap is unscrewed and the thrombus is removed from the front of the main body. BRIEF DESCRIPTION OF THE DRAWINGS

[0010] Figure 1 It is a schematic diagram of the structure of the present invention;

[0011] Figure 2 Schematic diagram of the filter layer structure of the present invention;

[0012] In the figure: 1, main body; 11, screw cap, 2, catheter interface; 3, negative pressure interface; 4, filter layer; 41, grid cylinder, 5, scale line; 6, serrated airtight ring. DETAILED DESCRIPTION

[0013] The present invention will be further described below with reference to the accompanying drawings.

[0014] The following will clearly and completely describe the technical solutions in the embodiments of the present invention in conjunction with the accompanying drawings. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making creative efforts are within the scope of protection of the present invention.

[0015] like Figure 1 As shown, the present invention provides a technical solution: it includes a main body 1 with a hollow interior and is transparent, a screw cap 11 is provided at the front end of the main body 1, the screw cap 11 is threadedly connected to the main body 1, a catheter interface 2 connected to a catheter is provided at the front end of the screw cap 11, and a negative pressure interface 3 connected to a negative pressure device such as an aspirator or an injection is provided at the rear end of the main body 1. The diameter of the negative pressure interface 3 is a gradient structure, the diameter of the outer end is the smallest, and a serrated airtight ring 6 is provided on the outer peripheral surface of the negative pressure interface 3. The gradient structure can meet the connection requirements of negative pressure devices of different calibers, and the serrated airtight ring 6 plays a role in sealing during connection to ensure the negative pressure effect; a plurality of filter layers 4 are provided at intervals in the middle of the axial direction inside the main body 1, as shown in FIG. Figure 2 As shown, the filter layer 4 is composed of a plurality of grid cylinders 41 parallel to each other, and the included angle between the grid cylinders 41 of two adjacent filter layers 4 is 90 degrees; the grid network is formed by axial extension.

[0016] When the present invention is in use, the catheter interface 2 is connected to the catheter, and the negative pressure interface 3 is connected to a negative pressure device such as an aspirator or an injection. After the thrombus is sucked out, the mixture of the thrombus and blood will flow through the multi-layer filter layer 4 together. The discontinuous grid mesh does not affect the passage of blood and water, but as the thrombus contacts more and more grid cylinders 41 when passing through the discontinuous grid mesh, the resistance becomes greater and greater. Finally, the thrombus is intercepted and attached to the multi-layer filter layer 4 in the process of passing through the filter layer 4. At this time, the thrombus can be directly measured through the transparent main body 1 without the need to remove the thrombus. For more convenient measurement, scale lines 5 are marked on the main body 1. The thrombus length can be conveniently calculated by directly observing the scale lines 5 corresponding to the two ends of the thrombus; thrombus filtering, extraction, and measurement can be completed in one step, and the operation is very convenient, which greatly improves work efficiency.

[0017] When the thrombus needs to be removed, the screw cap 11 is unscrewed to remove the thrombus from the front of the main body 1. The removed thrombus can be conveniently tested and the length of the thrombus can be re-measured.

[0018] It will be apparent to those skilled in the art that the present invention is not limited to the details of the exemplary embodiments described above and that the invention can be embodied in other specific forms without departing from the spirit or essential characteristics of the invention. Therefore, the embodiments should be considered in all respects as illustrative and non-restrictive, and the scope of the invention is defined by the appended claims, not the foregoing description, and all variations within the meaning and range of equivalents of the claims are intended to be included therein. Any reference sign in a claim should not be construed as limiting the claim to which it relates.

[0019] The above description is merely a preferred embodiment of the present invention and is not intended to limit the present invention. Any minor modifications, equivalent replacements, and improvements made to the above embodiments based on the technical essence of the present invention shall be included in the scope of protection of the technical solution of the present invention.

Claims

1. A thrombus filtering device, characterized in that: The invention comprises a main body (1) with a hollow interior and being transparent, a screw cap (11) being provided at the front end of the main body (1), the screw cap (11) being threadedly connected to the main body (1), a catheter interface (2) being provided at the front end of the screw cap (11), and a negative pressure interface (3) being provided at the rear end of the main body (1), the negative pressure interface (3) having a gradually changing diameter, with the outer end having the smallest diameter, and a sawtooth airtight ring (6) being provided on the outer peripheral surface of the negative pressure interface (3); and multiple filter layers (4) being provided at intervals in the middle of the axial direction of the main body (1), the filter layers (4) being composed of a plurality of grid cylinders (41) parallel to each other, and the angle between the grid cylinders (41) of two adjacent filter layers (4) being 90 degrees.

2. The thrombus filtering device according to claim 1, characterized in that: The catheter interface (2) is an ohmic connector.

3. The thrombus filtering device according to claim 1, characterized in that: The main body (1) is marked with scale lines (5).

4. The thrombus filtering device according to claim 1, characterized in that: The distance between two adjacent grid cylinders (41) on the filter layer (4) is twice the radius of the grid cylinder (41).

5. The thrombus filtering device according to claim 1, characterized in that: The distance between two adjacent filter layers (4) is twice the radius of the grid cylinder (41).

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