CN116138838A

CN116138838A - Thrombolysis device and thrombus removing system

Info

Publication number: CN116138838A
Application number: CN202111392497.2A
Authority: CN
Inventors: 刘凯; 樊亚明; 张贯一; 王佳豪; 徐晓红; 袁振宇
Original assignee: Shanghai Lanmai Medical Technology Co ltd
Current assignee: Shanghai Lanmai Medical Technology Co ltd
Priority date: 2021-11-19
Filing date: 2021-11-19
Publication date: 2023-05-23
Also published as: WO2023088180A1; AR127721A1

Abstract

The invention provides a thrombus breaking device and a thrombus removing system. Wherein, garrulous bolt device includes: a bolt breaking unit and a separating unit. The separation unit is connected with the proximal end of the thrombus taking head, and part of the separation unit is positioned between the driving tube and the thrombus breaking knife so as to cover part of the opening. By the arrangement of the separation unit, the function of blocking the vessel wall is achieved. Namely, the separation unit can prevent the vascular wall and the venous valve from entering the thrombus removing head in the thrombus removing process, so that the damage is reduced. In addition, the separation unit can separate the wall-attached thrombus from the vessel wall while blocking the vessel wall in the thrombus taking process, so that the clearing efficiency of the wall-attached thrombus is increased, and the clearing effect of the thrombus is improved. In addition, in the process of thrombus taking, the thrombus breaking knife, the separating unit and the thrombus taking head form a multi-layer cutting structure so as to realize repeated cutting of thrombus, improve thrombus breaking efficiency and reduce operation time. Therefore, the thrombus breaking device and the thrombus removing system provided by the invention can not only protect the vessel wall, but also improve the thrombus breaking efficiency and the thrombus removing effect.

Description

Thrombolysis device and thrombus removing system

Technical Field

The invention relates to the technical field of medical instruments, in particular to a thrombus breaking device and a thrombus removing system.

Background

Deep vein thrombosis (deep venous thrombosis, DVT) is a disease caused by abnormal clotting of blood in deep veins of the lower limb. DVT causes increased venous pressure, impeded blood reflux, swelling, pain and dysfunction of the lower extremities, and the risk of thrombus shedding which, with the impact of blood flow, reaches the pulmonary artery, can cause pulmonary embolism (pulmonary embolism, PE). DVT, if not effectively treated in the acute phase, causes thrombosis, venous obstruction, valve dysfunction, venous reflux and venous hypertension, forms post-thrombotic syndrome (post thrombosis syndrome, PTS), endangers limb survival, and threatens life safety.

The medicine can enter the blood system by oral administration or injection of aspirin, heparin or warfarin, etc., so that the venous thrombosis is effectively dissolved, and the occurrence rate of deep venous thrombosis and pulmonary embolism is greatly reduced. However, the prevention and treatment of the medicine also has obvious limitation, and the conditions such as easy hemorrhagic constitution, hemorrhagic cerebral apoplexy, serious trauma, pleural effusion, anticoagulation disorder and the like can cause serious body bleeding, thus endangering the life of patients. Therefore, the existing catheterization thrombolysis (CDT) can directionally convey thrombolytic drugs (such as urokinase and the like) to thrombus positions, so that the thrombus load is effectively reduced, and the occurrence rate of PTS is reduced. However, the DVT treatment by CDT has the problem of long thrombolysis time, which can lead to long-time catheter retention, increase discomfort of patients and prolong hospitalization time; repeated blood drawing, need close monitoring and high-level care; for cases where swelling is severe and even limb survival is compromised, it is not beneficial to open blood flow as soon as possible. And CDT is less suitable for patients at high risk of bleeding (e.g., severe hypertension, etc.), and is not suitable for patients who are delivered and pregnant.

Thus, for patients with DVT, which is a significant clinical symptom, and for whom thrombolytic drugs are not available, conventional surgical procedures are currently available for thrombolytic treatment. However, the traditional surgical operation also has the defects that: phlebotomy and thrombus removal are invasive procedures and are not suitable for patients with poor general conditions; the removal of the thrombus may disrupt valve function; residual thrombus exists, and further thrombolysis and anticoagulation are easy to cause wound complications.

In this regard, with the development of technology, mechanical thrombus removal (percutaneous mechanical thrombectomy, PMT) devices have emerged in recent years as a group of devices for removing acute and subacute intravascular thrombus formation, which employ dissolving, pulverizing, aspiration to remove intravascular thrombus, restoring the circulatory and valve functions. PMT is a minimally invasive endoluminal thrombi removal device that can rapidly remove thrombi and restore blood flow. Some PMTs in the prior art rotate a conveyor screw by a driver, the continuously rotating screw generates negative pressure, thrombus located near the working head of the catheter is sucked into the catheter, sheared by the conveyor screw rotating at high speed, and expelled from the body by a hose. However, since the catheter delivery screw rotates at a high speed, the vessel wall is sucked into the working head and is wound around the delivery screw during the aspiration of the thrombus, and there is a risk of damaging the vessel wall, causing vascular damage. Alternatively, some PMTs drive the rotor to rotate by the pusher screw, to chop and suck thrombus into the working head near the inlet port, and the mashed thrombus is expelled through the disintegration catheter under the delivery of the pusher screw. However, also because the rotor is of a spiral structure, the vessel wall is twisted into the working head in the process of sucking thrombus, so that the vessel wall is damaged, and the risk of vessel injury exists.

It can be seen that existing PMTs cause damage to the vessel wall. Thus, a new thrombolytic device and thrombus removal system are needed.

Disclosure of Invention

The invention aims to provide a thrombus breaking device and a thrombus removing system, which are used for solving the problem of avoiding damage to a vessel wall in the thrombus breaking process.

In order to solve the technical problems, the present invention provides a bolt breaking device, comprising: a shredding unit and a separating unit; wherein, the liquid crystal display device comprises a liquid crystal display device,

the bolt breaking unit comprises a bolt taking head, a bolt breaking cutter and a transmission pipe; the bolt taking head is provided with an inner cavity with two ends communicated, the bolt breaking knife is arranged in the inner cavity and is connected with the distal end of the transmission tube so as to drive the bolt breaking knife to rotate when the transmission tube rotates; an opening is formed in the side wall of the thrombus taking head, and part of the thrombus breaking knife is exposed out of the opening, so that thrombus is cut by the rotary thrombus breaking knife after entering the inner cavity through the opening;

the separation unit is connected with the proximal end of the thrombus taking head, and part of the separation unit is positioned between the transmission pipe and the thrombus breaking knife so as to cover part of the opening.

Optionally, in the bolt breaking device, the separation unit includes a connecting piece and a baffle plate which are connected; the connecting piece is connected with the proximal end of the thrombus taking head, the proximal end of the baffle is connected with the distal end of the connecting piece, and the baffle is positioned between the transmission pipe and the thrombus breaking knife so as to cover part of the opening.

Optionally, in the bolt crushing device, the separation unit includes the connecting piece and at least one baffle; the connecting piece is of an annular structure, and the connecting piece is fixedly connected with the proximal end of the thrombus taking head.

Optionally, in the bolt breaking device, the separation unit further includes a fixing member, and the fixing member is disposed opposite to the connecting member; the baffle is connected with the connecting piece and the fixing piece; the fixing piece and the transmission pipe are arranged at intervals.

Optionally, in the bolt breaking device, when the number of the baffles is greater than 1, all the baffles are spaced from each other along the circumferential direction of the connecting member.

Optionally, in the bolt breaking device, the outer surface of the baffle is a curved surface.

Optionally, in the bolt crushing device, the baffle includes a body and a protrusion extending from a part of a side wall of the body; the projection and a portion of the sidewall of the body conceal a portion of the opening.

Optionally, in the above thrombus breaking device, the thrombus breaking unit further includes a blocking strip, where the blocking strip is disposed on a side wall of the thrombus taking head and blocks a part of the opening.

Optionally, in the thrombus breaking device, a side wall of the thrombus taking head is provided with a guiding-out port, the guiding-out port is communicated with the opening, and the guiding-out port is located at one end of the opening along the axial direction of the thrombus taking head.

Optionally, in the bolt breaking device, the bolt breaking knife is in a tubular hollow structure and has at least one knife point; wherein, the blade is towards the lateral wall setting of bolt head.

Optionally, in the bolt breaking device, the transmission pipe is a hollow pipe, and the hollow pipe is formed by twisting flexible wires.

Optionally, in the bolt crushing device, the bolt crushing device further comprises a conical structure; the conical structure is arranged at the far end of the thrombus taking head and is provided with a top hole communicated with the inner cavity.

Optionally, in the bolt breaking device, the bolt breaking device further includes a guide wire, and the guide wire sequentially penetrates through the transmission tube and the conical structure and extends out through the top hole.

Optionally, in the thrombolytic device, the thrombolytic device further comprises a sheath, and a distal end of the sheath is connected with a proximal end of the thrombolytic head; the transmission pipe penetrates through the sheath pipe and is spaced from the inner wall of the sheath pipe.

Based on the same inventive concept, the invention also provides a thrombus cleaning system, which comprises a thrombus breaking module and a thrombus absorbing module; wherein, the liquid crystal display device comprises a liquid crystal display device,

the bolt breaking module comprises a driving device and a bolt breaking device; the driving device is connected with the transmission pipe to drive the transmission pipe to rotate and drive the bolt crushing cutter to rotate;

the bolt suction module comprises a bolt suction pipe and a bolt suction device; the proximal end of the thrombolysis tube is connected with the thrombolysis device, and the distal end of the thrombolysis tube is communicated with the inner cavity of the thrombolysis head.

In summary, the present invention provides a thrombus breaking device and a thrombus removing system. Wherein, garrulous bolt device includes: a bolt breaking unit and a separating unit. The separation unit is connected with the proximal end of the thrombus taking head, so that the separation unit is relatively fixed with the thrombus taking head, and part of the separation unit is positioned between the transmission pipe and the thrombus breaking knife to shield part of the opening. By the arrangement of the separation unit, the function of blocking the vessel wall is achieved. That is, the separation unit can obstruct the blood vessel wall and the venous valve from entering the thrombus taking head in the thrombus taking process, so that the damage to the blood vessel wall and the venous valve is reduced. In addition, the separation unit can separate the coanda thrombus from the vessel wall while blocking the vessel wall in the thrombus taking process, so that the clearing efficiency of the coanda thrombus is increased, and the clearing effect of the thrombus is improved. In addition, in the process of thrombus taking, the thrombus breaking knife, the separation unit and the thrombus taking head form a multi-layer cutting structure, repeated cutting of thrombus can be realized, thrombus breaking efficiency is improved, and operation time is shortened. Therefore, the thrombus breaking device and the thrombus removing system provided by the invention can protect the vessel wall, avoid the thrombus breaking process from being damaged, improve the thrombus breaking efficiency, reduce the operation time and improve the thrombus removing effect.

Drawings

FIG. 1 is a schematic view of a latch breaker in an embodiment of the invention;

FIG. 2 is a schematic diagram of a thrombolytic head according to an embodiment of the present invention;

FIG. 3 is a schematic top view of a bolt cutter in an embodiment of the invention;

FIG. 4 is a schematic illustration of the connection of a separation unit to a drive tube in an embodiment of the invention;

FIGS. 5-8 are schematic illustrations of the structure of a separation unit in an embodiment of the present invention;

FIG. 9 is a schematic illustration of the location of a barrier rib in an embodiment of the present invention;

FIG. 10 is a schematic view of the position of the outlet in an embodiment of the invention;

FIG. 11 is a schematic view of a latch breaker in an embodiment of the invention;

wherein, the reference numerals are as follows:

10-a bolt breaking unit; 101-a thrombus taking head; 101 a-a proximal end of the thrombolysis head; 101 b-distal end of the thrombolysis head; 102-a bolt breaking cutter; 103-a drive tube; 104-opening; 105-gear bar; 106-an outlet;

20-a separation unit; 201 a-a connector; 201 b-a fixing member; 202-a baffle; 2021-body; 2022-bulge;

30-a guide wire; 40-sheath; 50-conical structure.

Detailed Description

The invention will be described in further detail with reference to the drawings and the specific embodiments thereof in order to make the objects, advantages and features of the invention more apparent. It should be noted that the drawings are in a very simplified form and are not drawn to scale, merely for convenience and clarity in aiding in the description of embodiments of the invention. Furthermore, the structures shown in the drawings are often part of actual structures. In particular, the drawings are shown with different emphasis instead being placed upon illustrating the various embodiments. It should be further understood that the terms "first," "second," "third," and the like in this specification are used merely for distinguishing between various components, elements, steps, etc. in the specification and not for indicating a logical or sequential relationship between the various components, elements, steps, etc., unless otherwise indicated.

The definition of "proximal" and "distal" herein is: "distal" generally refers to the end of the medical device that first enters the patient during normal operation, and "proximal" generally refers to the end of the medical device that is near the operator during normal operation.

In order to solve the above technical problems, this embodiment provides a bolt breaking device. Referring to fig. 1, the bolt breaking device includes: a bolt breaking unit 10 and a separating unit 20. The thrombus breaking unit 10 comprises a thrombus taking head 101, a thrombus breaking knife 102 and a transmission tube 103. The thrombus taking head 101 is provided with an inner cavity with two communicated ends, the thrombus breaking knife 102 is arranged in the inner cavity, and the distal end of the transmission tube 103 extends into the inner cavity. The bolt crushing cutter 102 is connected with the distal end of the transmission tube 103 so as to drive the bolt crushing cutter 102 to rotate when the transmission tube 103 rotates. The sidewall of the head 101 has an opening 104, and the opening 104 exposes a portion of the shredding blade 102, so that the thrombus is shredded by the rotating shredding blade 102 after entering the inner cavity through the opening 104. The separation unit 20 is connected to the proximal end of the thrombolytic head 101, so that the separation unit 20 is fixedly connected to the thrombolytic head 101, and a portion of the separation unit 20 is located between the transmission tube 102 and the thrombolytic knife 102 to cover a portion of the opening 104. By the arrangement of the separation unit 20, it acts as a barrier to the vessel wall.

Thus, the baffle 202 can block the vessel wall and venous valve from entering the thrombolysis head during the thrombolysis process, thereby reducing the damage to the vessel wall and venous valve. And the separation unit 20 can separate the wall-attached thrombus from the vessel wall while blocking the vessel wall in the thrombus taking process, so that the clearing efficiency of the wall-attached thrombus is increased, and the clearing effect of the thrombus is improved. In addition, in the process of thrombus extraction, the thrombus breaking knife 102, the separation unit 20 and the thrombus extraction head 101 form a multi-layer cutting structure, so that repeated cutting of thrombus can be realized, the thrombus breaking efficiency is improved, and the operation time is shortened. The thrombus breaking device provided by the embodiment not only can protect the vessel wall and avoid the thrombus breaking process from being damaged, but also can improve the thrombus breaking efficiency, reduce the operation time and improve the thrombus removing effect.

Specifically, in the present embodiment, the separation unit 20 includes a connecting member 201a and a baffle 202 connected to each other, the connecting member 201a is connected to the proximal end of the thrombus removing head 101, the proximal end of the baffle 102 is connected to the distal end of the connecting member 201a, and the baffle 102 is located between the transmission tube 103 and the thrombus crushing cutter 102 to shield a portion of the opening 104. The connecting piece 201a may be connected to the proximal end of the thrombolytic head 101 by interference fit, clamping, or the like, so that the connecting piece 201a is fixedly connected to the thrombolytic head 101. The baffle 202 and the connecting piece 201a may be integrally formed, or may be fixedly connected by welding or the like. Thus, by the provision of the baffle 202, it functions as a barrier to the vessel wall.

Wherein the number of baffles 202 may be 1 or more. Referring to fig. 5, when the number of baffles 202 is one, a baffle 102 is located between the driving pipe 103 and the bolt cutter 102 to shield part of the book opening 104. When the number of the baffles 202 is plural, the baffles 202 are uniformly distributed along the circumferential direction of the connector 201a, for example, the number of the baffles 202 is two, and the two baffles 202 are spaced apart from each other along the circumferential direction of the connector 201a, so as to form a portal gap. Each baffle 202 shields a portion of the opening 104, and compared with shielding from one side of the opening 104, shielding from both sides simultaneously can place an unshielded portion of the opening 104 in the middle position of the opening 104, so as to realize adjustment of the opening position.

The following describes the bolt breaking device provided in this embodiment with reference to fig. 1 to 11:

with continued reference to fig. 1-3, the thrombolytic head 101 is a hollow tube with an inner cavity with two communicating ends. Preferably, the hollow pipe is formed by twisting flexible wires. The flexible filaments may be made of materials including, but not limited to, metal. The thrombus breaking knife 102 and the transmission tube 103 are arranged in the inner cavity, so that the thrombus taking head 101 increases the distance from the thrombus breaking knife 102 to the blood vessel wall, reduces the contact volume between the blood vessel wall and the thrombus breaking knife 102, and plays a role in protecting the blood vessel wall in the thrombus breaking process.

The bolt breaking knife 102 is of a tubular hollow structure, occupies small space, is beneficial to being sleeved on the transmission tube 103 to rotate along with the transmission tube, and can be provided with a plurality of knife points, so that the cutting efficiency is improved. In addition, the hollow design mode is convenient for the flow of gas and liquid in the rotating process, reduces the rotating resistance and improves the stability of the bolt breaking device in the operating process. Further, according to the requirement of the shredding degree, the shredding knife 102 may be provided with one knife, two knife or multiple knife, and the shredding efficiency is higher as the number of knife is increased. And, the blade is arranged towards the side wall of the thrombolysis head 101, i.e. towards the opening 104, so as to be cut when thrombus enters the inner cavity through the opening 104.

Referring to fig. 1, 4 and 5, the separation unit 20 is also disposed in the cavity. Preferably, the connecting member 201a of the separation unit 20 has a ring structure and is sleeved on the driving tube 103. Moreover, the proximal end of the connecting piece 201a is connected to the proximal end 101a of the thrombolysis head, and the distal end of the connecting piece 201a is connected to the proximal end of the baffle 202, so that the baffle 202 can always shield part of the openings 104 during thrombolysis, so as to block the vessel wall outside the thrombolysis head 101, and avoid the rotated thrombolysis knife 102 from being twisted into the inner cavity and causing damage.

To further limit the baffle 202, and ensure stability during operation, the separation unit 20 further includes a fixing member 201b. The fixing member 201b is disposed opposite to the connecting member 201a, and the connecting member 201a and the fixing member 201b are respectively connected to opposite ends of the baffle 202. Preferably, the fixing member 201b is also in an annular structure, and is sleeved at the distal end of the transmission tube 103 and spaced from the transmission tube 103, that is, the fixing member 201b does not contact with the transmission tube 103, so that the fixing member 201b is not affected when the transmission tube 103 rotates, thereby ensuring the static state of the separation unit 20. In addition, when the baffle 202 is subjected to a large impact caused by gas and liquid, the baffle 202 can twist, the twisting amplitude of the baffle 202 can be reduced under the restraint of the fixing piece 201b, and the stability of the bolt breaking device is ensured. Of course, in order to reduce the cost and simplify the device, only the connecting member 201a may be provided without the fixing member 201b. As shown in fig. 6, the separation unit 20 includes a connection member 201a and the baffle 202. The connector 201a is connected to the proximal end of the baffle 202 and the proximal end 101a of the thrombolysis head, which can also achieve the effect of protecting the vessel wall.

Further, when the separation unit 20 further includes a fixing member 201b, the number of the baffles 202 may be 1, 2, 3, or the like. When the number of the baffles 202 is greater than 1, all the baffles 202 are disposed at intervals from each other along the circumferential direction of the connection member 201 a. The number of baffles 202 is 2 as shown in fig. 7. The two baffles 202 are spaced apart from each other along the circumferential direction of the connecting member 201a to form a portal gap. Each baffle 202 shields a portion of the opening 104, and compared with shielding from one side of the opening 104, shielding from both sides simultaneously can place an unshielded portion of the opening 104 in the middle position of the opening 104, so as to realize adjustment of the opening position.

The outer surface of the baffle 202 is curved, and optionally is an arc surface, so as to adapt to the outer contours of the connecting piece 201a and the fixing piece 201b. Also, in addition to the regular arced face baffles 202 shown in FIGS. 4-7, the baffles 202 may be irregular arced faces. As shown in fig. 8, the baffle 202 includes a body 2021 and a projection 2022 extending from a portion of a sidewall of the body 2021. The protrusion 2022 and a portion of the side wall of the body 2021 cover a portion of the opening 104, so that the shape and the position of the portion of the opening 104 that is not covered can be changed according to the need of breaking the bolt, so as to obtain different shielding states, and the expansibility is good.

In order to further improve the blocking effect, as shown in fig. 9, the bolt breaking unit 10 provided in this embodiment further includes at least one blocking strip 105, where the blocking strip 105 is disposed on a side wall of the bolt taking head 101 and blocks a portion of the opening 104. Optionally, the barrier 105 shields a portion of the opening in an axial direction of the thrombolytic head 101. In the thrombus breaking process, when the vessel wall is adsorbed to the opening 104, the volume of the vessel wall entering the internal space of the thrombus breaking knife 102 is reduced under the blocking action of the barrier strip 3, then the vessel wall is pushed out of the internal space of the thrombus breaking knife 102 under the double actions of pushing of the thrombus breaking knife 102 and blocking of the baffle plate 202, and is separated from the opening 104 under the tension action of the vessel wall, so that the damage to the vessel wall is avoided, and the coanda thrombus can be separated from the vessel wall.

In addition, the stop strip 105 can also play a role in cutting thrombus. Under the rapid rotation of the thrombus breaking knife 102, the thrombus and the vessel wall are both subjected to suction force to approach the opening 104, so that the thrombus is rapidly flowed and subjected to larger reaction force when contacting the stop strip 105, and the thrombus is cut, thereby achieving the purpose of breaking the thrombus. The vessel wall has a certain tension compared to the thrombus where the external tissue is soft, and the tissue is tight, so that it is not cut by the barrier strip 105. Instead, the barrier strips 105 can block the vessel wall from entering the lumen, enabling protection of the vessel. Preferably, the stop bar 105 is integrally formed with the head 101. Therefore, in the process of thrombus extraction, the thrombus breaking knife 102, the baffle 105, the baffle 202 and the opening 104 form a multi-layer cutting structure, so that repeated cutting of thrombus can be realized, the thrombus breaking efficiency is improved, and the operation time is reduced.

Further, as shown in fig. 1 and 10, the sidewall of the thrombolysis head 101 has a guiding-out port 106, the guiding-out port 106 is in communication with the opening 104, and the guiding-out port 106 is located at one end of the opening 104 along the axial direction of the thrombolysis head 101. During the thrombus breaking process, when the vessel wall is adsorbed to the opening 104, on one hand, the vessel wall cannot be twisted into the thrombus taking head 101 by the thrombus breaking knife 102 under the action of the baffle 202, and on the other hand, the vessel wall is pushed to the outlet 106 under the pushing action of the thrombus breaking knife 102 and is extruded out of the opening 104 under the blocking action of the baffle 202 and the action of the tension of the vessel wall, so that the damage to the vessel wall is avoided, and meanwhile, the coanda thrombus can be separated from the vessel wall.

Referring to fig. 11, the thrombolytic device further comprises a guidewire 30, a sheath 40 and a tapered structure 50. The conical structure 50 is disposed at the distal end 101b of the thrombolytic head 101 and has a top hole communicating with the inner cavity. The guide wire 30 sequentially penetrates through the transmission tube 103 and the conical structure 50 and extends out through the top hole to play a role in guiding when the thrombus breaking device enters the target working area. The distal end of the sheath 40 is connected to the proximal end 101a of the thrombolysis head, and the driving tube 103 penetrates the sheath 40 and is spaced from the inner wall of the sheath 40. After being minced, the thrombus enters the inner cavity of the thrombus removing head 101 and falls into the thrombus removing module through the gap between the transmission tube 103 and the sheath tube 40.

Based on the same inventive concept, the embodiment also provides a thrombus cleaning system, which comprises a thrombus breaking module and a thrombus absorbing module. Wherein, the bolt breaking module comprises a driving device and a bolt breaking device. The driving device is connected with the transmission pipe 103 to drive the transmission pipe 103 to rotate and drive the bolt crushing cutter 102 to rotate. Optionally, the driving device is a motor. The bolt suction module comprises a bolt suction pipe and a bolt suction device. The proximal end of the suction tube is connected to the suction device, and the distal end of the suction tube is connected to the sheath 40 and is in communication with the lumen of the extraction head 101. Optionally, the thrombolytic device is a peristaltic pump.

When the driving device is started, the driving tube 103 is driven to rotate, the bolt crushing cutter 102 is driven to rotate, and meanwhile, the bolt sucker is started, so that a suction effect is generated. The thrombus is sucked, and is cut up under the action of the thrombus breaking knife 102 through the opening 104, so that fragments of the thrombus are conveyed to the sheath tube 40 through the inner cavity and are sucked out through the thrombus sucking tube, and thrombus taking is completed. The baffle 202, the barrier strip 105 and the outlet 106 can prevent the vascular wall from being damaged by inhalation, thereby achieving the purpose of protecting the vascular wall. Meanwhile, the thrombus is subjected to multiple cutting by the opening 104, the baffle 202, the baffle strip 105 and the thrombus breaking knife 102, so that the cutting efficiency is improved, and the thrombus removing effect is improved.

In summary, the present embodiment provides a thrombus breaking device and a thrombus removing system. Wherein, garrulous bolt device includes: a bolt breaking unit 10 and a separating unit 20. The separation unit 20 is connected to the proximal end 101a of the thrombolysis head, and a portion of the separation unit 20 is located between the transmission tube 103 and the thrombolysis knife 102 to shield a portion of the opening, functioning as a barrier to the vessel wall. That is, the separation unit 20 can block the blood vessel wall and the venous valve from entering the thrombus removing head 101 during the thrombus removing process, and reduce damage to the blood vessel wall and the venous valve.

In addition, the separation unit 20 can separate the wall-attached thrombus from the vessel wall while blocking the vessel wall during the thrombus removing process, thereby increasing the clearing efficiency of the wall-attached thrombus and improving the clearing effect of the thrombus. In addition, in the process of thrombus extraction, the thrombus breaking knife 102, the separation unit 20 and the thrombus extraction head 101 form a multi-layer cutting structure, so that repeated cutting of thrombus can be realized, thrombus breaking efficiency is improved, and operation time is reduced. Therefore, the thrombus breaking device and the thrombus removing system provided by the embodiment not only can protect the vessel wall and avoid the thrombus breaking process from being damaged, but also can improve the thrombus breaking efficiency, reduce the operation time and improve the thrombus removing effect.

It should also be appreciated that while the present invention has been disclosed in the context of a preferred embodiment, the above embodiments are not intended to limit the invention. Many possible variations and modifications of the disclosed technology can be made by anyone skilled in the art without departing from the scope of the technology, or the technology can be modified to be equivalent. Therefore, any simple modification, equivalent variation and modification of the above embodiments according to the technical substance of the present invention still fall within the scope of the technical solution of the present invention.

Claims

1. A thrombolytic device comprising: a shredding unit and a separating unit; wherein, the liquid crystal display device comprises a liquid crystal display device,

2. The bolt crushing device according to claim 1, wherein the separation unit comprises a connecting piece and a baffle plate connected; the connecting piece is connected with the proximal end of the thrombus taking head, the proximal end of the baffle is connected with the distal end of the connecting piece, and the baffle is positioned between the transmission pipe and the thrombus breaking knife so as to cover part of the opening.

3. The bolt crushing device according to claim 2, wherein the separation unit comprises the connection piece and at least one of the baffles; the connecting piece is of an annular structure, and the connecting piece is fixedly connected with the proximal end of the thrombus taking head.

4. A bolt crushing apparatus according to claim 3, wherein the separation unit further comprises a fixing member disposed opposite to the connecting member; the baffle is connected with the connecting piece and the fixing piece; the fixing piece and the transmission pipe are arranged at intervals.

5. A thrombus device according to any one of claims 2 to 4, wherein when the number of baffles is greater than 1, all baffles are spaced apart from each other along the circumference of the connector.

6. A bolt crushing apparatus according to any one of claims 2 to 4 wherein the outer surface of the baffle is curved.

7. The bolt crushing apparatus according to any one of claims 2 to 4, wherein the baffle includes a body and a projection extending from a portion of a side wall of the body; the projection and a portion of the sidewall of the body conceal a portion of the opening.

8. The thrombolytic device of claim 1, wherein said thrombolytic unit further comprises a barrier disposed on a sidewall of said thrombolytic head and shielding a portion of said opening.

9. The thrombolytic device according to claim 1, wherein a sidewall of said thrombolytic head has a leading-out port, said leading-out port is communicated with said opening, and said leading-out port is located at an end of said opening in an axial direction of said thrombolytic head.

10. The bolt crushing device according to claim 1, wherein the bolt crushing knife is of a tubular hollow structure and is provided with at least one knife edge; wherein, the blade is towards the lateral wall setting of bolt head.

11. The bolt crushing device according to claim 1, wherein the transmission pipe is a hollow pipe, and the hollow pipe is formed by twisting flexible wires.

12. The thrombolytic device of claim 1, further comprising a tapered structure; the conical structure is arranged at the far end of the thrombus taking head and is provided with a top hole communicated with the inner cavity.

13. The thrombolytic device of claim 12 further comprising a guide wire extending sequentially through said transmission tube and said tapered structure and extending through said top aperture.

14. The thrombolytic device of claim 1, further comprising a sheath, a distal end of said sheath being connected to a proximal end of said thrombolytic head; the transmission pipe penetrates through the sheath pipe and is spaced from the inner wall of the sheath pipe.

15. A thrombus removal system, comprising a thrombus breaking module and a thrombus absorbing module; wherein, the liquid crystal display device comprises a liquid crystal display device,

the bolt crushing module comprises a driving device and a bolt crushing device according to any one of claims 1-14;

the driving device is connected with the transmission pipe to drive the transmission pipe to rotate and drive the bolt crushing cutter to rotate;