CN115054316A - Intervention formula thrombus negative pressure cleaning device - Google Patents

Abstract

The invention discloses an intervention type negative pressure cleaning device for thrombus, which comprises a negative pressure bolt guiding pipe and a conical bolt taking part connected to the negative pressure bolt guiding pipe, wherein a guide screw rod is arranged in the negative pressure bolt guiding pipe, the guide screw rod penetrates through the conical bolt taking part and extends out of the conical bolt taking part, a sliding part and a medicine bag are installed on the guide screw rod, the sliding part is arranged in the conical bolt taking part, the medicine bag is arranged at the side close to the negative pressure bolt guiding pipe, the sliding part moves towards the negative pressure bolt guiding pipe under the traction of the guide screw rod, and the medicine bag releases liquid medicine to decompose thrombus under the extrusion of the sliding part. According to the invention, the plug taking part is arranged at the end part of the negative pressure thrombus guide tube, the plug taking part is abutted against the wall of the blood vessel when thrombus is extracted, the passage of the blood vessel is blocked temporarily, the side wall of the plug taking part is closed, the decomposed thrombus fragments are prevented from entering the blood vessel to cause secondary deposition injury, the medicine capsule and the blade are arranged in the plug taking part, the chemical and physical decomposition modes are used together, the pipe is prevented from being blocked by thrombus, the cleaning efficiency is improved, and the cleaning is more thorough.

Description

Intervention formula thrombus negative pressure cleaning device

Technical Field

The invention relates to the technical field of medical instruments, in particular to an intervention type negative pressure thrombus cleaning device.

Background

Thrombi are solid masses formed by the coagulation of blood or components in blood vessels, and are located in the blood circulation system such as arteries and veins. Taking out a thrombus formed in a blood vessel and re-conducting the occluded blood vessel is an effective means for recovering the blood vessel clogged with the thrombus.

At present, various thrombus cleaning devices are generally adopted for treating thrombotic diseases, for example, thrombus is sucked into a suction catheter by using a negative pressure suction principle, or the thrombus is cut and broken by using a spiral cutter and then is sucked.

When the thrombus is crushed by adopting a crushing method, the cutter or the thin tube rotates and rubs with the vascular wall, so that the vascular wall is easily damaged; the thrombus is broken by adopting a breaking method, and the broken fine thrombus block easily flows along with blood, is deposited again to block the blood vessel and causes secondary damage to a human body.

Disclosure of Invention

The invention aims to provide an interventional negative pressure thrombus cleaning device, which aims to solve the technical problem that secondary injury is easily caused because thrombus residue is not thoroughly cleaned in the thrombus cleaning process in the prior art.

In order to solve the technical problems, the invention specifically provides the following technical scheme:

an intervention type negative pressure cleaning device for thrombus comprises a negative pressure guide bolt pipe and a conical bolt taking part connected to the end part of the negative pressure guide bolt pipe, wherein a guide screw rod is arranged in the negative pressure guide bolt pipe, and the guide screw rod penetrates through and extends out of the conical bolt taking part;

the guide screw rod is provided with a sliding part and a medicine bag, the sliding part is arranged in the conical bolt taking part, the medicine bag is arranged on one side close to the negative pressure bolt guide pipe, the sliding part moves towards the negative pressure bolt guide pipe under the traction of the guide screw rod, and the medicine bag releases medicine liquid to decompose thrombus under the extrusion of the sliding part.

As a preferred scheme of the present invention, the tapered plug-taking portion includes an outer tapered closed curved surface and an inner tapered mesh surface, the inner tapered mesh surface is connected to the sliding member, the inner tapered mesh surface is in a concave arc surface shape or a conical surface shape, the outer tapered closed curved surface is made of a flexible transparent anti-seepage material, and the sliding member pulls the inner tapered mesh surface to move when moving along the guiding screw rod so that the inner tapered mesh surface is changed from the concave arc surface shape to the conical surface shape; the inner cone net surface is arranged inside the outer cone closed curved surface to form a material taking cone cavity for absorbing thrombus.

As a preferred scheme of the invention, the outer cone closed curved surface is provided with a fixed ring, the fixed ring is installed along a circumferential curved surface on the inner side of the outer cone closed curved surface, the fixed ring is made of a flexible transparent material, the fixed ring moves along the inner cone net surface, the fixed ring is perpendicular to the guide screw rod, and the fixed ring is in a circular ring shape at the end part of the outer cone closed curved surface.

As a preferable scheme of the present invention, the guide screw includes a guide sleeve and a movable screw, the movable screw is disposed inside the guide sleeve, the slider is mounted on the movable screw, and a sliding groove for providing a moving space for the slider is disposed on the guide sleeve;

the length of the moving screw rod is greater than that of the guide sleeve, the moving screw rod reaches the position of the thrombus block before the guide sleeve, and the moving screw rod moves towards the inner direction of the guide sleeve so that the sliding part slides in the sliding groove relative to the guide sleeve.

As a preferred scheme of the invention, the sliding part comprises a hollow cylinder sleeved on the movable screw rod, a vertical baffle is sleeved on the hollow cylinder, vertical notches are formed in two sides of the bottom of the vertical baffle, and the side walls of the guide sleeve on two sides of the sliding groove are arranged in the vertical notches;

the outer diameter of the hollow cylinder is smaller than the inner diameter of the guide sleeve, the inner diameter of the hollow cylinder is larger than the outer diameter of the movable screw rod, and the width of the vertical baffle is larger than the inner diameter of the guide sleeve.

As a preferred scheme of the invention, a shaft sleeve is arranged at the top of the vertical baffle, and the inner conical mesh surface is connected in the shaft sleeve;

the inner cone mesh surface is internally provided with a hollow round surface, the diameter of the hollow round surface is equal to the inner diameter of the shaft sleeve, the inner cone mesh surface is installed inside the shaft sleeve in a penetrating mode, one end of the hollow round surface is turned out of the shaft sleeve and fixed to the outer peripheral side of the shaft sleeve, and the inner cone mesh surface is opened outwards in a conical mode from the other end face of the shaft sleeve to form the material taking conical cavity.

As a preferable scheme of the present invention, the drug capsule includes a U-shaped magnetic base and a wrapping capsule body mounted on the U-shaped magnetic base, wherein mounting grooves are provided on the side walls of the guide sleeves on both sides of the sliding groove, magnetic columns are vertically mounted in the mounting grooves through springs, and the U-shaped magnetic base is magnetically connected to the magnetic columns.

As a preferable scheme of the present invention, a magnetic plate surface is provided on a side plate surface of the vertical baffle plate close to one side of the hollow circular surface, when the hollow cylinder moves to the position of the magnetic column along with the moving screw, the U-shaped magnetic base is magnetically connected with the vertical baffle plate to transfer the wrapped capsule filled with the liquid medicine to the sliding member, and the U-shaped magnetic base and the magnetic plate surface are magnetically attracted to each other, so that the wrapped capsule located between the U-shaped magnetic base and the magnetic plate surface is squeezed out of the liquid.

As a preferable scheme of the invention, a plurality of blade spines are arranged on the inner conical net surface, the blade spines are arranged on the net wires of the inner conical net surface through flat bars, the flat bars are integrally connected to two sides of the net wires, and the flat bars and the net wires are coaxial.

As a preferred scheme of the invention, the blade spines are arranged on two sides of the screen wire, and the blade spine array is arranged on the periphery of the material taking conical cavity formed by the inner conical screen surface;

the blade spines are parallel to the central axis of the mesh, and the blade spines on the two sides of the mesh are butterfly-shaped integrally. The blade spines are symmetrically arranged on two sides of the mesh of the net-shaped structure.

Compared with the prior art, the invention has the following beneficial effects:

according to the invention, the deformable thrombus taking part is arranged at the end part of the negative pressure thrombus guide tube, the thrombus taking part is abutted against the wall of the blood vessel when thrombus is extracted, the passage of the blood vessel is temporarily blocked, the side wall of the thrombus taking part is closed, the decomposed thrombus fragments are prevented from entering the blood vessel to cause secondary deposition injury, the medicine capsule is arranged in the thrombus taking part, the medicine capsule is extruded to release medicine liquid to chemically decompose thrombus, the thrombus is prevented from blocking the negative pressure delivery tube, the cleaning efficiency is improved, the cleaning is more thorough, and the effect is better.

Drawings

In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings used in the description of the embodiments or the prior art will be briefly described below. It should be apparent that the drawings in the following description are merely exemplary, and that other embodiments can be derived from the drawings provided by those of ordinary skill in the art without inventive effort.

Fig. 1 is a schematic overall structural diagram of a negative pressure cleaning device in a bolt removal state according to an embodiment of the present invention;

fig. 2 is a partial structural schematic view of a sliding member according to an embodiment of the present invention;

FIG. 3 is a schematic view of the attachment of the blade barbs to the inner tapered surface according to an embodiment of the present invention;

FIG. 4 is a schematic top plan view of a portion of a drug capsule provided by an embodiment of the present invention on a lead screw;

FIG. 5 is a schematic view of a partial connection between a drug capsule and a guide screw according to an embodiment of the present invention;

FIG. 6 is a partial schematic structural view of the tapered latch portion before latching, with the slider at the end of the sliding slot and the tapered latch portion in a tubular contracted state, according to an embodiment of the present invention;

FIG. 7 is a partial schematic structural view of the tapered latch portion after being latched and the sliding member being located at the end of the sliding slot and the tapered latch portion being in a tubular contracted state according to the embodiment of the present invention;

the reference numerals in the drawings denote the following, respectively:

1-a negative pressure catheter; 2-a tapered plug-removing part; 3, pricking by a blade; 4-guiding screw rod; 5-a slide; 6-medicine encapsulation;

21-inner cone net surface; 22-outer cone closed curved surface; 23-a fixed ring; 41-a guide sleeve; 42-moving the screw rod;

43-a sliding groove; 51-hollow cylinder; 52-vertical baffle plates; 53-shaft sleeve; 61-wrapping the capsule body; 62-U-shaped magnetic base;

210-hollow round surface; 211-flat bar; 420-mounting grooves; 421-a spring; 422-magnetic pole; 520-vertical slot opening; 521-magnetic board surface.

Detailed Description

The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.

The invention is suitable for the technical field of medical instruments and is mainly applied to the clinical treatment of thrombotic diseases. Through the portion of emboliaing of getting that can warp in negative pressure delivery pipe tip setting, the extraction thrombus, and get the portion of emboliaing in the vascular wall butt when the extraction thrombus, the blood vessel passageway is blockked up to the short time, it seals to get the portion lateral wall of emboliaing, the thrombus fragment after avoiding decomposing gets into the blood vessel and causes the secondary sedimentation injury, and be getting the inside medicine cyst and the blade that sets up of portion of emboliaing, the medicine cyst receives extrusion release liquid medicine chemical decomposition thrombus, the blade is drawn and is cut the thrombus piece and carry out physics nature decomposition thrombus, avoid the thrombus to block up the negative pressure delivery pipe, negative pressure extraction thrombus (piece), it is more thorough to have improved cleaning efficiency and clearance, the effect is better.

As shown in figure 1, the invention provides an interventional thrombus negative pressure cleaning device, which comprises a negative pressure guide bolt tube 1 and a conical bolt taking part 2 connected to the end part of the negative pressure guide bolt tube 1, wherein a guide screw rod 4 is arranged in the negative pressure guide bolt tube 1, and the guide screw rod 4 penetrates through and extends out of the conical bolt taking part 2.

When the device stretches into a blood vessel to clean thrombus, the guide screw rod 4 firstly passes through the thrombus block to preliminarily loosen the thrombus block, so that the thrombus block is moved by negative pressure suction, and the thrombus block is extracted into the conical thrombus taking part 2.

The guide screw rod 4 is provided with a sliding part 5 and a medicine bag 6, the sliding part 5 is arranged inside the conical thrombus taking part 2, the medicine bag 6 is arranged at one side close to the negative pressure thrombus guiding tube 1, the sliding part 5 moves towards the negative pressure thrombus guiding tube 1 under the traction of the guide screw rod 4, and the medicine bag 6 releases medicine liquid to decompose thrombus under the extrusion of the sliding part 5.

The tapered embolectomy part 2 can deform under the traction of the movement of the sliding part 5 to form an embolectomy cavity, and the medicinal bag 6 is arranged in the tapered embolectomy part 2, so that when the tapered embolectomy part 2 deforms, the medicinal bag 6 releases medicinal liquid to specifically ablate thrombus, and the blockage of the negative pressure catheter 1 caused by the large thrombus volume is avoided.

Specifically, the conical bolt taking part 2 comprises an outer conical closed curved surface 22 and an inner conical net surface 21, the inner conical net surface 21 is connected to the sliding part 5, the inner conical net surface 21 is in a concave arc surface shape or a conical surface shape, the outer conical closed curved surface 22 is made of a flexible transparent anti-seepage material, and the sliding part 5 pulls the inner conical net surface 21 to move when moving along the guide screw rod 4 so that the inner conical net surface 21 is changed into the conical surface shape from the concave arc surface shape; the inner conical net surface 21 forms a material taking conical cavity for absorbing thrombus inside the outer conical closed curved surface 22.

The tapered plug portion 2 is deformable, and the form of the tapered plug portion 2 changes in accordance with the movement of the slider 5, and the present embodiment is described from the position where the slider 5 is located near the end of the guide screw 4.

The whole substance of the outer cone closed curved surface 22 and the inner cone net surface 21 is a net structure connected into a whole, when the sliding part 5 is closest to the end part of the guide screw rod 4, the outer cone closed curved surface 22 and the inner cone net surface 21 extend and are arranged outside the guide screw rod 4 in a tubular shape, when the guide screw rod 4 moves towards one side close to the negative pressure guide bolt pipe 1, the inner cone net surface 21 is gradually pulled back and contracted into the outer cone closed curved surface 4, and when the inner cone net surface 21 just begins to enter the outer cone closed curved surface 22, the inner cone net surface 21 is mainly in a concave arc shape, when the inner cone net surface 21 moves along with the sliding part 5 in the outer cone closed net surface, the inner cone net surface 21 is mainly in a cone surface shape with different heights, and a cone cavity for sucking and decomposing thrombus is formed.

In this embodiment, the outer cone closed curved surface 22 is provided with the fixing ring 23 for maintaining the inner and outer double cone states, the fixing ring 23 is made of a flexible transparent material, and the fixing ring 23 has a hardness greater than that of the outer cone closed curved surface 22, but is still made of a flexible material. The shaping ring 23 is installed along the inner side circumferential curved surface of the outer cone closed curved surface 22, the outer cone closed curved surface 22 and the inner cone mesh surface 21 are substantially integrated, the outer cone closed curved surface 22 gradually becomes a cone in the process of moving and deforming towards one side of the negative pressure guide bolt pipe 1, the shaping ring 23 can also move and deform along with the inner cone mesh surface 21, the end face of the end part of the outer cone closed curved surface 22 is in a circular ring shape when the shaping ring 23 is perpendicular to the guide screw rod 4, the whole shaping ring 23 is located in the end part vertical circumferential plane of the outer cone closed curved surface 22, and the inner cone curved surface and the outer cone curved surface are shaped and maintained to be sleeved together. The outer cone closed curved surface 22 is abutted against the vessel wall to temporarily block the vessel, and a gap is reserved between the inner cone mesh surface 21 and the outer cone closed curved surface 22 so that thrombus blocks decomposed and divided by the inner cone mesh surface enter the negative pressure catheter tube 1.

Because negative pressure catheter 1 is connected with outside negative pressure device, when the thrombus piece was through interior awl wire side 21, under the negative pressure effect, the thrombus can be tentatively cut apart into less volume by network structure, and the thrombus piece can be sent away under the negative pressure effect, avoids blockking up the pipeline.

Further, as shown in fig. 3, in the present embodiment, a plurality of blade spines 3 are provided on the inner conical mesh surface 21, the blade spines 3 are installed on the mesh wire of the inner conical mesh surface 21 through flat bars 211, the flat bars 211 are integrally connected to both sides of the mesh wire, and the flat bars 211 and the mesh wire are coaxial. That is, when the thrombus passes through the inner tapered mesh surface 21, the thrombus is divided by the blade spines 3 in the mesh structure, in addition to the mesh structure, to enhance the dividing effect.

Further, the blade spines 3 are arranged on two sides of the net wire, the blade spines 3 are arranged on the periphery of a material taking conical cavity formed by the inner conical net surface 21 in an array mode, the blade spines 3 are parallel to the central axis of the net wire, and the blade spines 3 on the two sides of the net wire are butterfly-shaped integrally. The two sides of the mesh of the net-shaped structure are symmetrically provided with the blade spines 3, so that the cutting is more dense and the cutting effect is better.

Since the thrombus volume is reduced after the thrombus mass is physically divided by the inner tapered mesh surface 21, but the thrombus may be accumulated and blocked, a medical solution for dissolving the thrombus is further provided in the tapered thrombus removal portion 2 in the present embodiment so as to specifically ablate the thrombus. Thrombolytic agents include, but are not limited to, urokinase, streptokinase, alteplase, reteplase, and lumbrokinase. The medicine liquid is loaded in the medicine bag, in the deformation process of the conical thrombus taking part 2, the medicine bag is extruded to trigger the release of the medicine liquid, the thrombus is decomposed and ablated, and the deformation of the conical thrombus taking part 2 is not separated from the movement of the sliding part 5.

The guide screw 4 comprises a guide sleeve 41 and a movable screw rod 42, the movable screw rod 42 is arranged inside the guide sleeve 41, the sliding part 5 is arranged on the movable screw rod 42, and a sliding groove 43 for providing a moving space for the sliding part 5 is arranged on the guide sleeve 41; the length of the movable screw 42 is longer than that of the guide sleeve 41, and the movable screw 42 reaches the thrombus mass before the guide sleeve 41, and the movable screw 42 moves toward the inside of the guide sleeve 41 so that the slider 5 slides in the slide groove 43 with respect to the guide sleeve 41.

As shown in fig. 2, the sliding member 5 includes a hollow cylinder 51 sleeved on the moving screw 42, a vertical baffle plate 52 is sleeved on the hollow cylinder 51, vertical notches 520 are provided at two sides of the bottom of the vertical baffle plate 52, and side walls of the guide sleeve 41 at two sides of the sliding groove 43 are provided in the vertical notches 520; the outer diameter of the hollow cylinder 51 is smaller than the inner diameter of the guide sleeve 41, the inner diameter of the hollow cylinder 51 is larger than the outer diameter of the movable screw rod 42, and the width of the vertical baffle plate 52 is larger than the inner diameter of the guide sleeve 41.

The sliding of the sliding member 5 is a relative motion problem, the sliding member 5 is fixedly installed on the moving screw rod 42, the moving screw rod 42 moves and drives the sliding member 5 to move, the sliding member 5 moves relative to the sliding groove 43 outside the moving screw rod 42, and the sliding member 5 slides in the sliding groove 43, as shown in fig. 6 and 7, the sliding member is in a state of a tapered bolt-taking part when the sliding member is at two ends of the sliding groove 43.

The installation embodiment of the inner conical net surface 21 and the sliding part 5 provided by the invention comprises the following steps: the top of the vertical baffle 52 is provided with a shaft sleeve 53, and the inner cone net surface 21 is connected in the shaft sleeve 53; the hollow circular surface 210 is arranged inside the inner conical mesh surface 21, the diameter of the hollow circular surface 210 is equal to the inner diameter of the shaft sleeve 53, the inner conical mesh surface 21 is installed inside the shaft sleeve 53 in a penetrating mode, one end of the hollow circular surface 210 is turned over out of the shaft sleeve 53 and fixed on the outer peripheral side of the shaft sleeve 53, and the inner conical mesh surface 21 is outwards opened in a conical mode from the other end face of the shaft sleeve 53 to form a material taking conical cavity.

When the sliding part 5 is arranged at the end part of the sliding groove 53 close to one side of the end part of the movable screw rod 42, the net-shaped structure of the conical bolt taking part 2 is outwards unfolded and integrally tubular (the inner conical net surface 21 is close to the end part of the movable screw rod 42) and is coated outside the guide screw rod 4; the sliding part 5 moves to the other end part of the sliding groove 43, and the reticular structure of the conical embolectomy part 2 is expanded outwards and integrally tubular (the outer conical closed curved surface 22 is close to the end part of the movable screw rod 42), and is coated outside the guide screw rod 4 (at the moment, the cleaning device is favorably drawn back from the blood vessel).

When the sliding part 5 moves in the inner space of the sliding groove 53, the sliding part 5 drives the inner cone net surface and the outer cone closed curved surface 22 to deform continuously, the sliding part 5 firstly touches the medicine bag 6 and extrudes the medicine bag 6 in one step, then the fixed ring 23 moves to be perpendicular to the guide screw rod 4, and when the fixed ring 23 is annular at the end face of the end part of the outer cone closed curved surface 22, the double-cone state is kept unchanged, thrombus is extracted, and chemical and physical double decomposition and ablation are carried out on the thrombus by liquid medicine in the conical thrombus taking part 2 and the net-shaped blade thorn.

When the extraction thrombus, because outer cone closed surface and vascular wall butt, the thrombus piece can not enter into other vascular backward flows, and the dual decomposition of physics chemistry is cleaner thoroughly with the clearance.

As shown in fig. 4 and 5, the medicine bag 6 includes a U-shaped magnetic base 62 and a wrapping bag body 61 installed on the U-shaped magnetic base 62, installation grooves 420 are provided on the side walls of the guide sleeves 41 on both sides of the sliding groove 43, magnetic columns 422 are vertically installed in the installation grooves 420 through springs 421, the U-shaped magnetic base 62 is magnetically connected to the magnetic columns 422, the medicine bag 6 is installed (adhered or bolted) in the middle of the U-shaped magnetic base 62, and the size of the medicine bag 6 is smaller than that of the side walls of the U-shaped magnetic base 62, so that the periphery of the U-shaped magnetic base can attract the magnetic plate surface 521, and the medicine bag 6 in the middle is squeezed.

The magnetic board surface 521 is arranged on the side board surface of the vertical baffle 52 close to one side of the hollow circular surface 210, when the hollow cylinder 51 moves to the position of the magnetic column 422 along with the movable screw rod 42, the U-shaped magnetic base 62 is magnetically connected with the vertical baffle 52 so as to transfer the wrapping bag body 61 filled with the liquid medicine to the sliding part 5, the U-shaped magnetic base 62 and the magnetic board surface 521 are magnetically attracted, and the wrapping bag body 61 between the U-shaped magnetic base 62 and the magnetic board surface 521 is squeezed out of the liquid.

By means of the magnet connection, an initial mounting of the drug capsule 6 is achieved and when the drug capsule 6 needs to be pressed to release the drug solution, the drug capsule 6 is transferred to the slider 5 by means of the magnetic force relationship and pressed to release the drug solution due to the magnetic attraction.

The above embodiments are only exemplary embodiments of the present application, and are not intended to limit the present application, and the protection scope of the present application is defined by the claims. Various modifications and equivalents may be made by those skilled in the art within the spirit and scope of the present application and such modifications and equivalents should also be considered to be within the scope of the present application.

Claims (10)

1. An intervention type negative pressure thrombus cleaning device is characterized by comprising a negative pressure guide bolt pipe (1) and a conical bolt taking part (2) connected to the end part of the negative pressure guide bolt pipe (1), wherein a guide screw rod (4) is arranged inside the negative pressure guide bolt pipe (1), and the guide screw rod (4) penetrates through and extends out of the conical bolt taking part (2);

the guide screw rod (4) is provided with a sliding part (5) and a medicine bag (6), the sliding part (5) is arranged inside the conical bolt taking part (2), the medicine bag (6) is arranged at one side close to the negative pressure bolt guide pipe (1), the sliding part (5) moves towards the negative pressure bolt guide pipe (1) under the traction of the guide screw rod (4), and the medicine bag (6) releases medicine liquid to decompose thrombus under the extrusion of the sliding part (5).

2. The interventional thrombus negative pressure cleaning device according to claim 1, wherein the conical thrombus removal part (2) comprises an outer conical closed curved surface (22) and an inner conical mesh surface (21), the inner conical mesh surface (21) is connected to the sliding member (5), the inner conical mesh surface (21) is in a concave arc surface shape or a conical surface shape, the outer conical closed curved surface (22) is made of a flexible transparent anti-seepage material, and the sliding member (5) pulls the inner conical mesh surface (21) to move when moving along the guide screw rod (4) so that the inner conical mesh surface (21) is changed from the concave arc surface shape to the conical surface shape; the inner cone net surface (21) forms a material taking cone cavity for absorbing thrombus inside the outer cone closed curved surface (22).

3. The interventional thrombus negative pressure cleaning device according to claim 2, wherein a fixed ring (23) is arranged on the outer cone closed curved surface (22), the fixed ring (23) is installed along the inner side circumference curved surface of the outer cone closed curved surface (22), the fixed ring (23) is made of flexible transparent material, the fixed ring (23) follows the inner cone mesh surface (21) to move, the fixed ring (23) is perpendicular to the guide screw rod (4), and the end part of the outer cone closed curved surface (22) is in a circular ring shape.

4. The interventional thrombus negative pressure cleaning device according to claim 2, wherein the guide screw (4) comprises a guide sleeve (41) and a moving screw (42), the moving screw (42) is arranged inside the guide sleeve (41), the slider (5) is mounted on the moving screw (42), and a sliding groove (43) providing a moving space for the slider (5) is arranged on the guide sleeve (41);

the length of the movable screw rod (42) is larger than that of the guide sleeve (41), the movable screw rod (42) reaches the blood clot before the guide sleeve (41), and the movable screw rod (42) moves towards the inner direction of the guide sleeve (41) so that the sliding part (5) slides relative to the guide sleeve (41) in the sliding groove (43).

5. The interventional thrombus negative pressure cleaning device according to claim 4, wherein the sliding member (5) comprises a hollow cylinder (51) sleeved on the movable screw (42), a vertical baffle (52) is sleeved on the hollow cylinder (51), vertical slots (520) are arranged at two sides of the bottom of the vertical baffle (52), and the side walls of the guide sleeve (41) at two sides of the sliding groove (43) are arranged in the vertical slots (520);

the outer diameter of the hollow cylinder (51) is smaller than the inner diameter of the guide sleeve (41), the inner diameter of the hollow cylinder (51) is larger than the outer diameter of the movable screw rod (42), and the width of the vertical baffle (52) is larger than the inner diameter of the guide sleeve (41).

6. The interventional thrombus negative pressure clearing device according to claim 5, wherein a shaft sleeve (53) is installed on top of the vertical baffle (52), the inner conical mesh surface (21) is connected in the shaft sleeve (53);

the utility model discloses a material taking device, including axle sleeve (53), interior awl square (21), the inside hollow round face (210) that is provided with of interior awl square (21), the diameter size of hollow round face (210) with the internal diameter of axle sleeve (53) equals, interior awl square (21) run through install inside axle sleeve (53), just the one end of hollow round face (210) is turned over out axle sleeve (53) and is fixed axle sleeve (53) periphery side, interior awl square (21) follow another terminal surface of axle sleeve (53) outwards is the taper and opens, forms get the material cone chamber.

7. The interventional thrombus negative pressure cleaning device according to claim 6, wherein the drug capsule (6) comprises a U-shaped magnetic base (62) and a wrapping capsule body (61) mounted on the U-shaped magnetic base (62), a mounting groove (420) is provided on the side wall of the guide sleeve (41) at both sides of the sliding groove (43), a magnetic column (422) is vertically mounted in the mounting groove (420) through a spring (421), and the U-shaped magnetic base (62) is magnetically connected to the magnetic column (422).

8. The interventional thrombus negative pressure cleaning device according to claim 7, wherein a magnetic plate surface (521) is arranged on a side plate surface of the vertical baffle (52) close to one side of the hollow circular surface (210), when the hollow cylinder (51) moves to the position of the magnetic column (422) along with the movable screw rod (42), the U-shaped magnetic base (62) is magnetically connected with the vertical baffle (52) so as to transfer the wrapping bag body (61) filled with the liquid medicine to the sliding part (5), the U-shaped magnetic base (62) is magnetically attracted with the magnetic plate surface (521), and the wrapping bag body (61) between the U-shaped magnetic base (62) and the magnetic plate surface (521) is squeezed to form the liquid.

9. The interventional thrombus negative pressure cleaning device according to claim 2, wherein a plurality of blade spines (3) are arranged on the inner conical mesh surface (21), the blade spines (3) are mounted on the mesh wire of the inner conical mesh surface (21) through flat bars (211), the flat bars (211) are integrally connected to both sides of the mesh wire, and the flat bars (211) and the mesh wire are coaxial.

10. The interventional thrombus negative pressure cleaning device according to claim 9, wherein the blade spines (3) are arranged on both sides of the mesh wire, and the array of blade spines (3) is arranged on the periphery of the material-taking conical cavity formed by the inner conical mesh surface (21);

the blade spines (3) are parallel to the central axis of the mesh, and the blade spines (3) on two sides of the mesh are butterfly-shaped integrally. The two sides of the mesh of the net-shaped structure are symmetrically provided with the blade spines (3).

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