Thrombus intercepting and taking-out device

Abstract

The invention provides a thrombus intercepting and taking-out device, and relates to the technical field of internal arteriovenous fistula thrombus treatment equipment. The thrombus intercepting and taking-out device comprises a main branch pipe, an intercepting pipe is arranged on the inner side of the main branch pipe, an intercepting mechanism is arranged on the intercepting pipe, the intercepting mechanism comprises a plurality of filling supporting rods arranged at the end of the intercepting pipe in a surrounding mode, a filter screen is arranged between every two adjacent filling supporting rods, and filling pipes connected with the filling supporting rods are arranged in the intercepting pipe; a groove is formed in the intercepting pipe, the filling supporting rod is arranged in the groove, and the interior of the filling supporting rod is hollow; compared with the prior art, the thrombus cleaning device is simple in structure, convenient to use, capable of effectively dissolving, collecting and sucking out thrombus, high in thrombus cleaning efficiency and safe.

Description

Technical Field

[0001] The present invention relates to the technical field of arteriovenous fistula thrombosis treatment equipment, and in particular to a thrombus interception and removal device. Background Art

[0002] Arteriovenous fistula is the "lifeline" of hemodialysis patients and is of great significance. The most common complication of arteriovenous fistula is thrombosis. The timing of thrombolysis and minimally invasive treatment are currently the key and difficulty in solving the problem of fistula thrombosis.

[0003] In clinical practice, due to the differences in internal fistula thrombosis, it is often difficult to treat longer and larger thrombi using traditional puncture needles and techniques. Moreover, the thrombi after thrombolysis are prone to detachment, resulting in life-threatening events. The ever-changing thrombus dissolution status is difficult to collect and aspirate in a timely and effective manner, resulting in poor thrombolysis and clot removal effects, causing patients to endure the pain and risk of secondary puncture and catheterization, and increasing the workload of medical staff.

[0004] In view of this, we now propose a thrombus interception and removal device to solve the many problems mentioned above. Summary of the Invention

[0005] The purpose of the present invention is to provide a thrombus interception and removal device with a simple structure, easy use, and the ability to effectively dissolve, collect and aspirate thrombi with high thrombus removal efficiency.

[0006] In order to solve the above technical problems, the technical solution adopted by the present invention is: A thrombus interception and removal device includes a main branch, an interception tube is arranged on the inner side of the main branch, and an interception mechanism is arranged on the interception tube. The interception mechanism includes a plurality of filling rods arranged around the end of the interception tube, a filter is arranged between two adjacent filling rods, and a filling tube connected to the filling rod is arranged inside the interception tube; a groove is provided on the interception tube, and the filling rod is arranged in the groove, and the interior of the filling rod is hollow.

[0007] Furthermore, in the present invention, the top end of the filling support rod is provided with an arc-shaped portion, and the filter is provided below the arc-shaped portion.

[0008] Furthermore, in the present invention, two interception mechanisms are arranged at intervals on the interception tube.

[0009] Furthermore, in the present invention, the filling rods of the two intercepting mechanisms are inclined inwards.

[0010] Furthermore, in the present invention, the filling tube is connected to a liquid filling tube, a push rod is provided in the liquid filling tube, and the push rod is connected to the liquid filling tube through a threaded connection.

[0011] Furthermore, in the present invention, a pressure tube is provided on one side of the liquid filling tube, a pressure plate is slidably provided in the pressure tube, and a return spring is provided on one side of the pressure plate; the inner diameter of the pressure tube is consistent with the inner diameter of the filling support rod.

[0012] Furthermore, in the present invention, a plurality of diaphragms are provided in the pipe opening of the above-mentioned intercepting pipe, and two adjacent diaphragms are stacked on both sides, with openings left between the plurality of diaphragms.

[0013] Furthermore, in the present invention, the hardness of the main branch pipe is greater than that of the intercepting pipe.

[0014] Compared with the prior art, the embodiments of the present invention have at least the following advantages or beneficial effects: After thrombolysis, thrombi are prone to detachment and displacement, and it is difficult to collect and aspirate them in a timely and effective manner in response to the ever-changing thrombus dissolution conditions, resulting in poor thrombus removal effects. The present application provides a thrombus interception and removal device, which includes a main branch tube, an interception tube disposed on the inner side of the main branch tube, an interception mechanism disposed on the interception tube, the interception mechanism comprising a plurality of filling struts disposed around the end of the interception tube, a filter disposed between two adjacent filling struts, a filling tube connected to the filling struts disposed within the interception tube, a groove disposed on the interception tube, the filling struts disposed within the groove, and the filling struts being hollow.

[0015] The present invention utilizes an intercepting tube within the main branch, allowing the main branch to reach the vicinity of a thrombus. The intercepting tube then extends through the thrombus, intercepting the thrombus after thrombolysis, and then retracts to collect the thrombus. The filling struts are hollow and extend and retract during filling, completing their deployment once they reach their intended location. Filters positioned between the filling struts facilitate entry, guidance, and removal of the device. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the following briefly introduces the drawings required for use in the embodiments. It should be understood that the following drawings only illustrate certain embodiments of the present invention and therefore should not be regarded as limiting the scope. For ordinary technicians in this field, other relevant drawings can be obtained based on these drawings without paying any creative work.

[0017] Figure 1 This is a front view of an intercepting tube according to an embodiment of the present invention; Figure 2 is a cross-sectional view of an intercepting tube according to an embodiment of the present invention; Figure 3 2. It is a cross-sectional view of a liquid-filled tube according to an embodiment of the present invention.

[0018] Icons: 1. Main branch pipe; 2. Intercepting pipe; 3. Intercepting mechanism; 4. Arc-shaped part; 5. Filter screen; 6. Groove; 7. Filling pipe; 8. Liquid filling pipe; 9. Push plate; 10. Push rod; 11. Pressure pipe; 12. Pressure plate; 13. Filling support rod. DETAILED DESCRIPTION

[0019] To make the objectives, technical solutions, and advantages of the embodiments of the present invention more clear, the technical solutions of the embodiments of the present invention will be clearly and completely described below in conjunction with the accompanying drawings of the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Generally, the components of the embodiments of the present invention described and shown in the drawings herein can be arranged and designed in various different configurations.

[0020] Therefore, the following detailed description of the embodiments of the present invention provided in the accompanying drawings is not intended to limit the scope of the invention as claimed, but rather merely represents selected embodiments of the present invention. All other embodiments derived by persons of ordinary skill in the art based on the embodiments of the present invention without creative effort shall fall within the scope of protection of the present invention.

[0021] Example 1: Please refer to Figure 1 An embodiment of the present application provides a thrombus interception and removal device, which includes a main branch 1, an interception tube 2 is arranged on the inner side of the main branch 1, and an interception mechanism 3 is arranged on the interception tube 2. The interception mechanism 3 includes a plurality of filling rods 13 arranged around the end of the interception tube 2, a filter screen 5 is arranged between two adjacent filling rods 13, and a filling tube 7 connected to the filling rod 13 is arranged in the interception tube 2; a groove 6 is provided on the interception tube 2, and the filling rod 13 is arranged in the groove 6, and the filling rod 13 is hollow inside.

[0022] The thrombus after thrombolysis is prone to fall off and shift, and it is difficult to collect and aspirate the thrombus in a timely and effective manner due to the constantly changing thrombus dissolution conditions, resulting in poor thrombus removal effects. The present invention provides an interception tube 2 in the main branch 1, so that after the main branch 1 reaches the vicinity of the thrombus location, the interception tube 2 extends through the thrombus location to intercept the thrombus after thrombolysis, and then retracts the interception tube 2 to collect the thrombus. The filling strut 13 is hollow inside, and the extension and retraction of the filling strut 13 are achieved by filling, and the expansion after reaching the position is completed. The filter 5 provided between the filling struts 13 facilitates the entry, guidance and removal of the device. It is understandable that the retractable filter 5 can adopt the structural setting of the self-expandable filter 5 commonly found on the market, such as the filter 5 in the Pounce thrombectomy system of Surmodics or the filter 5 setting in CN205832236U.

[0023] Furthermore, in the present invention, the top of the filling strut 13 is provided with an arcuate portion 4, and the filter 5 is provided below the arcuate portion 4. The arrangement of the arcuate portion 4 allows it to conform well to the inner diameter of the blood vessel. At the same time, the arcuate portion 4 can limit the position of the filter 5 and fit into the groove 6 when the filling strut 13 is retracted, facilitating entry and exit.

[0024] Furthermore, in the present invention, two interception mechanisms 3 are provided at intervals on the interception tube 2. The two interception mechanisms 3 can intercept and control the thrombus from two directions.

[0025] Furthermore, in the present invention, the filling rods 13 of the two interception mechanisms 3 are tilted inwards. The filling rods 13 on both sides tilted inwards can better intercept the thrombus and prevent the thrombus from leaking out from the side when it falls off.

[0026] Furthermore, in the present invention, the filling tube 7 is connected to the filling tube 8, and a push rod 10 is disposed within the filling tube 8. The push rod 10 is threadedly connected to the filling tube 8. The push rod 10 and the filling tube 8 are threadedly connected, allowing the user to gradually fill the liquid by screwing the push rod 10 in and out, thus avoiding overfilling. The push rod 10 is provided with a push plate 9 for pushing.

[0027] Furthermore, in the present invention, a pressure tube 11 is provided on one side of the filling tube 8. A pressure plate 12 is slidably provided inside the pressure tube 11, and a return spring is provided on one side of the pressure plate 12. The inner diameter of the pressure tube 11 is consistent with the inner diameter of the filling support rod 13. The surface of the pressure tube 11 is provided with a visual scale. By observing the moving position of the pressure plate 12, the pressure situation inside the filling support rod 13 can be intuitively understood, thereby avoiding the possibility of overfilling causing damage to the patient's blood vessels. It is understandable that the return spring can be selected from a common spring structure on the market.

[0028] Furthermore, in the present invention, a plurality of diaphragms are provided in the pipe opening of the intercepting tube 2, the two sides of two adjacent diaphragms are stacked, and openings are left between the plurality of diaphragms.

[0029] Furthermore, in the present invention, the main branch 1 has a greater hardness than the intercepting tube 2. The arrangement of the main branch 1 facilitates the entire device to reach a predetermined position, and the intercepting tube 2 can be bent according to the condition of the blood vessel, and has greater adaptability.

[0030] In summary, an embodiment of the present invention provides a thrombus interception and removal device, which includes a main branch 1, an interception tube 2 is provided on the inner side of the main branch 1, an interception mechanism 3 is provided on the interception tube 2, the interception mechanism 3 includes a plurality of filling struts 13 arranged around the end of the interception tube 2, a filter 5 is provided between two adjacent filling struts 13, a filling tube 7 connected to the filling struts 13 is provided in the interception tube 2; a groove 6 is provided on the interception tube 2, the filling strut 13 is provided in the groove 6, and the filling strut 13 is hollow inside. The present invention provides an interception tube 2 in the main branch 1, so that after the main branch 1 reaches the vicinity of the thrombus position, the interception tube 2 extends through the thrombus position to intercept the thrombus after thrombolysis, and then retracts the interception tube 2 to collect the thrombus. The filling strut 13 is hollow inside, and the extension and retraction of the filling strut 13 are achieved by filling, and the expansion after reaching the position is completed. The filter 5 provided between the filling struts 13 facilitates the entry, guidance and removal of the device.

[0031] The above are merely preferred embodiments of the present invention and are not intended to limit the present invention. Those skilled in the art will readily appreciate that various modifications and variations of the present invention are possible. Any modifications, equivalent substitutions, or improvements made within the spirit and principles of the present invention shall be included within the scope of protection of the present invention.

Claims

1. A thrombus interception and removal device, characterized in that: It includes a main branch pipe, an intercepting pipe is arranged on the inner side of the main branch pipe, an intercepting mechanism is arranged on the intercepting pipe, the intercepting mechanism includes a plurality of filling rods arranged around the end of the intercepting pipe, a filter is arranged between two adjacent filling rods, a filling pipe connected to the filling rod is arranged in the intercepting pipe; a groove is provided on the intercepting pipe, the filling rod is arranged in the groove, and the filling rod is hollow inside.

2. The thrombus interception and removal device according to claim 1, characterized in that: The top end of the filling support rod is provided with an arc portion, and the filter is arranged below the arc portion.

3. The thrombus interception and removal device according to claim 2, characterized in that: Two interception mechanisms are arranged on the interception tube at intervals.

4. The thrombus interception and removal device according to claim 2, characterized in that: The filling rods of the two intercepting mechanisms are inclined inwards.

5. The thrombus interception and removal device according to claim 2, characterized in that: The filling tube is connected to a liquid filling tube, a push rod is arranged in the liquid filling tube, and the push rod is connected to the liquid filling tube through a thread.

6. The thrombus interception and removal device according to claim 2, characterized in that: A pressure tube is provided on one side of the liquid filling tube, a pressure plate is slidably provided in the pressure tube, and a return spring is provided on one side of the pressure plate; the inner diameter of the pressure tube is consistent with the inner diameter of the filling support rod.

7. The thrombus interception and removal device according to claim 2, characterized in that: A plurality of diaphragms are arranged in the pipe opening of the intercepting tube, and two adjacent diaphragms are stacked on both sides, with openings left between the plurality of diaphragms.

8. The thrombus interception and removal device according to claim 1, characterized in that: The main branch pipe has a harderness than that of the intercepting pipe.

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