Thrombus aspiration device

Abstract

The utility model discloses a thrombus aspiration device, which belongs to the technical field of medical instruments and structurally comprises a first connecting piece and a soft needle head, a Luer taper is arranged at the front end of the first connecting piece, an outer needle tube is fixedly connected to the outer side of the soft needle head, a plurality of grooves are formed in the outer needle tube, and the first connecting piece is fixedly connected with the soft needle head. A rotating piece is arranged on the outer side needle tube, a cavity in the soft needle head is set to be a first cavity, and a cavity between the soft needle head and the outer side needle tube is set to be a second cavity. Negative pressure in the second cavity is adjusted through the second pressure control structure, negative pressure is generated in the second cavity through the third connecting piece, the rotating piece deflects, the groove has adsorption force, one end of the rotating piece has a blocking function in cooperation with deflection of the rotating piece, thrombus enters the second cavity after being adsorbed by the groove, and the thrombus is prevented from entering the second cavity. Thrombus is discharged through the third connecting piece and the second connecting piece, and the situation that thrombus blocks flow to all positions of the blood vessel is reduced.

Description

Technical Field

[0001] The utility model relates to the technical field of medical devices, in particular to a thrombus aspiration device. Background Art

[0002] A thrombus aspiration device is a medical device used to treat intravascular thrombotic diseases. Its main purpose is to physically remove the thrombus from the blood vessel and restore normal blood flow.

[0003] Among the existing technologies, negative pressure suction is used. This technology is relatively simple and is used to deal with relatively mild thrombosis problems. When using a catheter to absorb the thrombus, when the thrombus is larger than the radius of the catheter, the catheter contacts the thrombus and is adsorbed by negative pressure, which may cause part of the thrombus to move along the catheter and the blood vessel wall in the opposite direction of the blood flow. After a period of time, it is affected by the blood flow and then moves in the direction of the blood flow. The blood vessels are branched, which may cause the thrombus to flow along the branched blood vessels into other blood vessels, causing the thrombus to flow to various parts of the blood vessels and cause other health problems.

[0004] Therefore, the present invention provides a thrombus aspiration device to solve the above problems. Utility Model Content

[0005] In view of the deficiencies in the prior art, the present invention provides a thrombus aspiration device to solve the above problems.

[0006] To achieve the above objectives, the present invention is implemented through the following technical solutions: a thrombus aspiration device, comprising a first connecting member, a Luer connector provided at the front end of the first connecting member, and a soft needle, an outer needle tube fixedly connected to the outer side of the soft needle, a plurality of grooves being provided on the outer needle tube, a rotating member being provided on the outer needle tube, a chamber within the soft needle being set as a first chamber, and a chamber between the soft needle and the outer needle tube being set as a second chamber.

[0007] Preferably, a first pressure control mechanism is provided on the first connecting member, and the soft needle is provided at the front end of the Luer connector.

[0008] Preferably, a third connecting piece is provided on the soft needle, a second connecting piece is provided on an oblique side of the third connecting piece, and a second pressure control structure is provided on the second connecting piece.

[0009] Preferably, the third connecting member is fixedly connected to the outer needle tube, and the second connecting member is communicated with the outer needle tube through the third connecting member.

[0010] Preferably, a shaft is provided on the rotating member, the rotating member is arranged in the groove, and the rotating member is rotatably connected to the side wall of the outer needle tube through the shaft.

[0011] Preferably, the rear end wall thickness of the rotating member is thinner than the front end wall thickness of the rotating member, and a limit block is provided in the groove.

[0012] Beneficial effects

[0013] The present invention provides a thrombus aspiration device. Compared with the prior art, it has the following beneficial effects:

[0014] (1) A thrombus aspiration device, which regulates the negative pressure in the second chamber through a second pressure control structure, generates negative pressure in the second chamber through a third connecting member, causes the rotating member to deflect, and the groove has an adsorption force, and in conjunction with the deflection of the rotating member, one end of the rotating member has a blocking effect, and the thrombus is adsorbed by the groove and enters the second chamber, and then is discharged through the third connecting member and the second connecting member, thereby reducing the situation where the thrombus block flows to various parts of the blood vessel.

[0015] (2) A thrombus aspiration device, which limits the position of the rotating part by setting a limit block, and cooperates with pressure control to facilitate the control of the opening and closing of the groove of the rotating part, and is easy to adjust at any time. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 It is a side view of the overall structure of the utility model;

[0017] Figure 2 This is a side view of the outer needle tube structure of the utility model;

[0018] Figure 3 This is a side view of the rotating part structure of the utility model;

[0019] Figure 4 This is a structural diagram of the soft needle of the present utility model.

[0020] In the figure, 1 is the first connecting member; 2 is the first pressure control mechanism; 3 is the second connecting member; 4 is the second pressure control structure; 5 is the Luer connector; 6 is the third connecting member; 7 is the outer needle tube; 8 is the rotating member; 9 is the shaft; 10 is the soft needle; 11 is the groove; 12 is the first chamber; 13 is the second chamber; 14 is the limit block. DETAILED DESCRIPTION

[0021] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the embodiments described 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.

[0022] Example 1:

[0023] See also Figure 1-4 A thrombus aspiration device includes a first connecting member 1, a Luer connector 5 is provided at the front end of the first connecting member 1, and a soft needle 10. The outer side of the soft needle 10 is fixedly connected to an outer needle tube 7, the outer needle tube 7 is provided with a plurality of grooves 11, and the outer needle tube 7 is provided with a rotating member 8. The chamber inside the soft needle 10 is set as a first chamber 12, and the chamber between the soft needle 10 and the outer needle tube 7 is set as a second chamber 13.

[0024] A first pressure control mechanism 2 is provided on the first connecting member 1. The first air pressure mechanism 2 includes a vacuum pump, a needle tube and a micro-injection pump. The vacuum pump itself has the function of pressure regulation and control. The vacuum pump is used to generate negative pressure in the needle tube. After the thrombus is sucked out, the vacuum pump is adjusted to return the pressure inside the needle tube to zero, and then micro-injection is used to adjust and infuse blood.

[0025] The soft needle 10 is arranged at the front end of the Luer connector 5 .

[0026] A third connecting member 6 is provided on the soft needle 10, and a second connecting member 3 is provided on the oblique side of the third connecting member 6. A second pressure control structure 4 is provided on the second connecting member 3. The second pressure control structure 4 is composed of a vacuum pump, a needle tube and a microinjection pump. The vacuum pump itself has the function of pressure regulation and control. The vacuum pump is used to generate negative pressure in the needle tube. After the thrombus is sucked out, the vacuum pump is adjusted to return the pressure inside the needle tube to zero, and then microinjection is used to adjust and infuse blood.

[0027] The third connecting member 6 is fixedly connected to the outer needle tube 7 , and the second connecting member 3 is communicated with the outer needle tube 7 through the third connecting member 6 .

[0028] A shaft 9 is provided on the rotating member 8 , and the rotating member 8 is disposed in the groove 11 . The rotating member 8 is rotatably connected to the side wall of the outer needle tube 7 via the shaft 9 .

[0029] The wall thickness of the rear end of the rotating member 8 is thinner than that of the front end of the rotating member 8 , and a limit block 14 is provided in the groove 11 .

[0030] Working principle: The first pressure control mechanism 2 generates negative pressure in the first chamber 12 through extraction. When the soft needle 10 encounters a thrombus, the negative pressure in the first chamber 12 causes the soft needle 10 to absorb the thrombus. Through the negative pressure absorption, the thrombus is discharged through the soft needle 10, the Luer connector 5, and the first connector 1.

[0031] When a thrombus collides with the soft needle 10, the thrombus is dispersed and moves along the gap between the blood vessel wall and the soft needle 10. The negative pressure in the second chamber 13 is adjusted by the second pressure control structure 4. The negative pressure generated in the second chamber 13 is generated through the third connecting member 6, causing the rotating member 8 to deflect. The groove 11 has an adsorption force, and combined with the deflection of the rotating member 8, one end of the rotating member 8 has a blocking effect. The thrombus is adsorbed by the groove 11 and enters the second chamber 13. Then, the thrombus is discharged through the third connecting member 6 and the second connecting member 3.

[0032] When the absorption of thrombus is stopped, the second chamber 13 has a certain pressure through the second pressure control structure 4, so that the second chamber 13 rotates in a closed loop, closing the groove 11, and limiting the rotating part 8 through the limit block 14 to avoid the rotating part 8 being difficult to return to its original position when the absorption of thrombus is stopped.

[0033] Meanwhile, the contents not described in detail in this specification belong to the prior art known to those skilled in the art.

[0034] It should be noted that, in this document, relational terms such as first and second, etc., are used only to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply any actual relationship or order between these entities or operations. Moreover, the terms "comprises," "comprising," or any other variations thereof are intended to cover non-exclusive inclusion, such that a process, method, article, or apparatus that includes a list of elements includes not only those elements but also other elements not explicitly listed, or elements inherent to such process, method, article, or apparatus.

[0035] Although the embodiments of the present invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and variations may be made to these embodiments without departing from the principles and spirit of the present invention, and the scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. A thrombus aspiration device, comprising a first connecting member (1), wherein a Luer connector (5) is provided at the front end of the first connecting member (1), characterized in that: The invention also includes a soft needle (10), wherein the outer side of the soft needle (10) is fixedly connected to an outer needle tube (7), a plurality of grooves (11) are provided on the outer needle tube (7), a rotating member (8) is provided on the outer needle tube (7), a chamber in the soft needle (10) is set as a first chamber (12), and a chamber between the soft needle (10) and the outer needle tube (7) is set as a second chamber (13).

2. The thrombus aspiration device according to claim 1, characterized in that: The first connecting member (1) is provided with a first pressure control mechanism (2), and the soft needle (10) is provided at the front end of the Luer connector (5).

3. The thrombus aspiration device according to claim 1, characterized in that: A third connecting member (6) is provided on the soft needle (10), a second connecting member (3) is provided on an oblique side of the third connecting member (6), and a second pressure control structure (4) is provided on the second connecting member (3).

4. The thrombus aspiration device according to claim 3, characterized in that: The third connecting member (6) is fixedly connected to the outer needle tube (7), and the second connecting member (3) is communicated with the outer needle tube (7) through the third connecting member (6).

5. The thrombus aspiration device according to claim 4, characterized in that: The rotating member (8) is provided with a shaft (9), the rotating member (8) is arranged in the groove (11), and the rotating member (8) is rotatably connected to the side wall of the outer needle tube (7) via the shaft (9).

6. The thrombus aspiration device according to claim 1, characterized in that: The wall thickness of the rear end of the rotating member (8) is thinner than the wall thickness of the front end of the rotating member (8), and a limiting block (14) is provided in the groove (11).

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