CN210990579U

CN210990579U - Mechanical negative pressure thrombus suction device

Info

Publication number: CN210990579U
Application number: CN201921703939.9U
Authority: CN
Inventors: 刘利国; 张秀军
Original assignee: Individual
Current assignee: Individual
Priority date: 2019-10-11
Filing date: 2019-10-11
Publication date: 2020-07-14
Anticipated expiration: 2029-10-11

Abstract

The utility model discloses a about mechanical negative pressure thrombus suction device, this mechanical negative pressure thrombus suction device still includes: the suction sheath is provided with a plugging end at one end; the sheath core is provided with a channel for passing through a guide wire and is inserted into the suction sheath; the thrombus filtering unit comprises a thrombus collecting cavity and a filtering component, and the thrombus collecting cavity is connected with the suction sheath; the thrombus extraction component comprises a sheath body and a thrombus extraction basket extending out of or retracting into the sheath body, wherein the metal wires of one end of the thrombus extraction basket, which are close to the thrombus, are dense, and the metal wires of the other end of the thrombus extraction basket are sparse; the executing end of the sheath body is inserted into the interior of the suction sheath. This disclosed technical scheme has thrombus filtration system, can filter blood and reinfusion, and it is extravagant basically not have blood, and the suction sheath is single-layer construction, simple structure, and the cost of manufacture is low, and suction effect is good.

Description

Mechanical negative pressure thrombus suction device

Technical Field

The utility model discloses a thrombus suction device field especially relates to mechanical negative pressure thrombus suction device.

Background

Currently, the existing thrombus aspiration devices have the following disadvantages:

1. the cost is high;

2. the suction effect of the thrombus is not good, and particularly for thrombus with longer time, higher organization degree or larger elasticity, the thrombus is not easy to be crushed, and the effect is worse;

3. the damage of red blood cells is easily caused, hemoglobinuria is often formed, and even renal insufficiency and deterioration are caused;

4. the thrombus sucked out is crushed, and a general specimen cannot be reserved for the patient and family members to check;

5. the existing suction devices are high-pressure water flow or spiral mechanical tool bit structures, so that the injury, even rupture and bleeding of the blood vessel wall can be caused, and the existing suction devices are frequently used in clinic;

6 the red blood cells in the sucked blood are destroyed and can not be returned to the body;

synthesize above-mentioned, design one kind and have thrombus filtration system, can filter blood and feedback, it is extravagant basically not have blood, the suction sheath is single layer construction, simple structure, the cost of manufacture is low, and the effectual mechanical negative pressure thrombus suction device of suction is the problem that awaits the solution urgently.

SUMMERY OF THE UTILITY MODEL

In order to overcome the problems existing in the related art, the embodiment of the utility model provides a mechanical negative pressure thrombus suction device. The technical scheme is as follows:

according to the utility model discloses a first aspect of the embodiment provides mechanical negative pressure thrombus suction device, and this mechanical negative pressure thrombus suction device still includes:

the suction sheath is provided with a plugging end at one end;

the sheath core is provided with a channel for passing through a guide wire and is inserted into the suction sheath;

the thrombus filtering unit comprises a thrombus collecting cavity and a filtering component, and the thrombus collecting cavity is connected with the suction sheath;

the thrombus extraction component comprises a sheath body and a thrombus extraction basket extending out of or retracting into the sheath body, wherein the metal wires of one end of the thrombus extraction basket, which are close to the thrombus, are dense, and the metal wires of the other end of the thrombus extraction basket are sparse;

the executing end of the sheath body is inserted into the interior of the suction sheath.

In one embodiment, the blocking end of the suction sheath is provided with a blocking member for guiding and preventing blood leakage.

In one embodiment, the end of the sheath core proximal to the thrombus forms a sharp section that facilitates passage through the blood vessel.

In one embodiment, the thrombus filter unit further comprises a negative pressure device, and the suction end of the negative pressure device extends into the thrombus collection cavity.

In one embodiment, the filter assembly comprises at least one layer of filter cotton.

In one embodiment, the bolt withdrawing assembly further comprises a handle, wherein a cavity is arranged inside the handle, and the cavity of the handle is communicated with the inside of the sheath body.

In one embodiment, a sliding piece capable of reciprocating along the axial direction of the inner cavity is arranged in the inner cavity of the handle, and the sliding piece is connected with the hanging bolt basket through a metal wire.

In one embodiment, the interior of the thrombus collection chamber is sealed and connected to an external syringe for withdrawing filtered blood from the thrombus collection chamber.

In one embodiment, the embolectomy device comprises a balloon wrapped around the open end of the sheath near one end of the thrombus, the balloon, the sheath and the inner cavity of the handle are connected to form a sealed liquid storage area for storing liquid, the liquid fills the balloon, and the balloon is inflated; the liquid is pumped out of the balloon, and the balloon is contracted.

In one embodiment, the thrombus removal basket or the balloon is provided with a marking layer for developing under X rays.

The utility model discloses a technical scheme that embodiment provided can include following beneficial effect:

the first filtering component is used for separating blood and thrombus discharged from the suction sheath, and the filtered blood is returned to the blood vessel without blood waste basically;

the suction sheath is of a single-layer structure, the inner diameter of the suction sheath can be larger, the inner diameter of the suction sheath is larger and the suction effect is better under the same blood vessel puncture wound diameter, namely the outer diameter of the suction sheath is smaller under the same inner diameter, and the suction sheath can be matched with the smaller puncture sheath to reduce the injury of the blood vessel wall;

thirdly, the negative pressure device is used for mechanically controlling and sucking air in the thrombus collecting cavity, so that a negative pressure effect is achieved, and the blood mixed with thrombus is promoted to be discharged;

fourthly, the wires at the far end of the thrombus taking basket are dense, the wires at the near end are sparse, and thrombus can be better captured and kept by taking the reference of the design of the vena cava filter.

It is to be understood that both the foregoing general description and the following detailed description are exemplary and explanatory only and are not restrictive of the disclosure.

Drawings

The accompanying drawings, which are incorporated in and constitute a part of this specification, illustrate embodiments consistent with the present disclosure and together with the description, serve to explain the principles of the disclosure.

FIG. 1 is an exploded view of the installation of the embolectomy device of the present invention in conjunction with an aspiration sheath;

FIG. 2 is an exploded view of the sheath core of the present invention in conjunction with the installation of the suction sheath;

FIG. 3 is a schematic structural diagram of the thrombus filter unit according to the present invention;

fig. 4 is a schematic structural view of the handle of the present invention;

FIG. 5 is a cross-sectional view taken along line B-B of FIG. 4;

fig. 6 is a schematic structural view of the sheath core of the present invention;

FIG. 7 is a schematic structural view of the hanging-bolt basket of the present invention being received in the sheath;

FIG. 8 is a schematic structural view of the hanging-bolt basket of the present invention extending out of the sheath body;

fig. 9 is a schematic structural view of the balloon in a state of being filled with an empty body;

fig. 10 is a schematic structural view of the balloon in a fluid state;

reference numerals:

1. aspiration sheath 2, sheath core 201, tapered portion

202. Channel 301, embolectomy basket 302, sheath

303. Handle 304, slider 305, grip

401. Thrombus collecting cavity 402, filter cotton 403 and blood guide tube

404. Negative pressure device 405, pedal controller 5 and injector

6. Plugging piece 7, blood discharge pipe 8 and guide wire

901. Balloon 902, piston 101 and connecting pipe

Detailed Description

Reference will now be made in detail to the exemplary embodiments, examples of which are illustrated in the accompanying drawings. When the following description refers to the accompanying drawings, like numbers in different drawings represent the same or similar elements unless otherwise indicated. The implementations described in the exemplary embodiments below are not intended to represent all implementations consistent with the present disclosure. Rather, they are merely examples of apparatus and methods consistent with certain aspects of the present disclosure, as detailed in the appended claims.

The embodiment of the utility model discloses a technical scheme that provides relates to mechanical negative pressure thrombus suction device, especially relates to the medical machine field. In the related art, it is expensive; the suction effect of the thrombus is not good, and particularly for thrombus with longer time, higher organization degree or larger elasticity, the thrombus is not easy to be crushed, and the effect is worse; the damage of red blood cells is easily caused, hemoglobinuria is often formed, and even renal insufficiency and deterioration are caused; the thrombus sucked out is crushed, and a general specimen cannot be reserved for the patient and family members to check; the existing suction devices are high-pressure water flow or spiral mechanical tool bit structures, so that the injury, even rupture and bleeding of the blood vessel wall can be caused, and the existing suction devices are frequently used in clinic; the red blood cells in the sucked blood are destroyed and can not be returned into the body. Based on this, the mechanical negative pressure thrombus suction device provided by the technical scheme of the disclosure comprises a filtering component, a suction sheath and a filter, wherein the filtering component is used for separating blood and thrombus discharged from the suction sheath, and the filtered blood is infused back into a blood vessel, so that blood waste is basically avoided; the suction sheath is of a single-layer structure, the inner diameter of the suction sheath can be larger, the inner diameter of the suction sheath is larger and the suction effect is better under the same blood vessel puncture wound diameter, namely the outer diameter of the suction sheath is smaller under the same inner diameter, and the suction sheath can be matched with the smaller puncture sheath to reduce the injury of the blood vessel wall; and thirdly, the negative pressure device is used for mechanically controlling and sucking air in the thrombus collecting cavity, so that a negative pressure effect is achieved, and the discharge of blood mixed with thrombus is promoted.

Fig. 1 is an exploded view schematically illustrating a mechanical negative pressure thrombus aspiration device provided in the technical solution disclosed in the present invention. As can be seen from FIG. 1, the mechanical negative pressure thrombus aspiration device further comprises: the suction sheath 1, one end of the suction sheath 1 is a plugging end; the suction sheath is single-layer structure, and under the same blood vessel puncture wound diameter, suction sheath internal diameter can be done bigger, and the internal diameter is big more, and the suction effect is better, or under the same internal diameter condition, this device suction sheath external diameter is littleer, can arrange littleer puncture sheath, reduces the vascular wall damage.

The sheath core 2 is provided with a channel for passing through a guide wire, the sheath core 2 is inserted into the suction sheath 1, and it is further pointed out that the channel formed on the sheath core 2 is coaxial with the sheath core 2, the inner diameter of the channel is slightly larger than the outer diameter of the guide wire, so that the sheath core 2 can conveniently enter the blood vessel of a patient under the limit of the guide wire until the thrombus is reached;

thrombus filter unit, thrombus filter unit includes thrombus collection chamber 401 and filtering component, thrombus collection chamber 401 is connected with suction sheath 1, it needs further to point out, chamber 401 is collected as arranging inside of blood vessel 7 and suction sheath 1 through soft medical catheter to the thrombus, under negative pressure state, blood that will mix the thrombus is guided out to thrombus collection chamber 401 from the inside of chamber 401 is collected to the thrombus, it needs further to point out to be equipped with the connecting pipe 101 rather than inside being linked together on suction sheath 1, the one end of arranging blood vessel 7 is connected with connecting pipe 101, its other end is linked together with the inside of chamber 401 is collected to the thrombus, connecting pipe 101 is the hard pipe, the thrombus is difficult to block up at the junction of connecting pipe 101 and suction sheath 1, it is unobstructed to keep the thrombus to discharge the passageway.

The thrombus extraction component comprises a sheath body 302 and a thrombus extraction basket 301 which extends out of or retracts into the sheath body 302, wherein the wires of one end, close to the thrombus, of the thrombus extraction basket 301 are dense, and the wires of the other end of the thrombus extraction basket are sparse; the executing end of the sheath body 302 is inserted into the interior of the suction sheath 1, and it should be further noted that the embolectomy basket 303 is provided with a marking layer for developing under X-ray.

Preferably, the blocking end of the suction sheath 1 is provided with a blocking member 6 for guiding and preventing blood leakage, it should be further noted that the blocking member 6 is an open end fixedly connected to the suction sheath 1 at a first end, the open end is away from thrombus, the second end of the blocking member 6 is provided with a hole for passing the guide wire 8 or the sheath core 2, the whole blocking member 6 may be a sealing structure made of an elastic material, or a portion of the blocking member 6 close to the first end is a hard material, and a portion of the blocking member 6 close to the second end is supported by an elastic material, the blocking member 6 is detachable, and the suction sheath can be completely flushed, and the embodiment is not limited.

Further, the first end of the blocking piece 6 can be connected with the suction sheath 1 in a threaded connection or a clamping connection, and the two are in a sealing state when being contacted; the aperture of the second end of the end sealing part 6 is smaller than the diameter of the guide wire 8, and the diameter of the guide wire 8 is larger than the radius of the second end, and the guide wire 8 is inserted into the second end, so that the aperture is expanded, the guide wire 8 is in interference fit with the aperture, and the sealing state is realized.

Preferably, as shown in fig. 6, the end of the sheath core 2 near the thrombus forms a tapered part for facilitating the passage of the blood vessel, and it should be further noted that the tapered part 201 may be a cone with a smooth transition side wall and a tapered end, and the sheath core 2 is provided with a channel 202 with two open ends for passing through the guide wire 8.

In one embodiment, as shown in fig. 1 and fig. 2, the thrombus filtering unit further includes a negative pressure device, the air exhaust end of the negative pressure device 404 extends into the thrombus collecting cavity 401, it should be further noted that the negative pressure device 404 is preferably a C13 vacuum pump with the model of HI L INTEC, the vacuum pump is externally connected with a pedal controller, the pedal controller 405 is preferably a foot switch with the model of TFS-201, the C13 vacuum pump with the HI L INTEC and the foot switch with the TFS-201 are all existing components sold by the department of Taobao, and the connection mode is that the two are electrified in series, which is not a protection content of the scheme, and the scheme is not limited in this respect.

Preferably, as shown in fig. 3, the filter assembly comprises at least one layer of filter cotton 402, which isolates thrombus at the upper part, and the filtered blood flows through the mesh of the filter cotton 402 and then falls into the bottom of the thrombus collection chamber 401. it should be noted that the filter cotton 402 can be made of one or more of synthetic fibers such as polyester, polyamide, polyacrylonitrile, polyethylene, polypropylene, rayon and natural fibers such as wool, cotton, and inorganic fiber, or a mixture of multiple fibers can be mechanically filtered to remove blood clots with various diameters and impurities such as air in the blood, and the white blood cells have a diameter of 20 microns, so the pores of the filter material can exceed 20 microns, and are generally between 40 and 150 microns.

In an example, the bolt pulling assembly further comprises a handle 303, a cavity is arranged inside the handle 303, the cavity of the handle 303 is communicated with the inside of the sheath body 302, a sliding member capable of reciprocating along the axial direction of the cavity is arranged inside the cavity of the handle 303, the sliding member is connected with the bolt hanging basket 301 through a metal wire, it should be further noted that the sliding member comprises a sliding block 304 and a handle 305 arranged on the surface of the sliding block 304, the upper end of the sliding member penetrates through the outer wall of the handle 303 and extends out of the outer side of the handle, and a limit hole for limiting the displacement of the handle 305 is formed in the handle 303.

In the example, the inside of the thrombus collection chamber 401 is in a sealed state, the inside of the thrombus collection chamber 401 is connected to an external syringe 5, the syringe 5 is used for extracting filtered blood in the thrombus collection chamber 401, and it should be further noted that the syringe 5 is communicated with the inside of the syringe 5 through a blood vessel 403.

Preferably, the suction sheath 1 is a single-layer structure with a wall thickness of between 0.20 and 0.35 mm.

In the technical scheme, when the mechanical negative pressure thrombus suction device is used, a guide wire 8 is firstly placed at a preset position in a blood vessel, a sheath core 201 is combined with a suction sheath 1, the guide wire 8 and the sheath core 201 are withdrawn along the guide wire 8 to reach the preset position, a sheath body 302 of a thrombus extractor is inserted into the suction sheath 1, at the moment, a thrombus hanging basket 301 is still arranged in the sheath body 302 and is not pushed out and opened, the sheath body 302 is pushed into a thrombus position in the blood vessel, a sliding block 304 of a handle 303 of the thrombus extractor is pushed, the thrombus hanging basket 301 is released and then pulled back, meanwhile, a pedal switch serving as a vacuum pump switch is pedaled to generate negative pressure in the suction sheath 1, thrombus collected in the suction sheath 1 by the thrombus extractor and part of blood are collected in a thrombus collecting cavity 401 with a filter assembly, the thrombus is filtered and left, and the filtered blood can be pumped back into a human body by a syringe 5 or left for other use. The thrombus hanging basket 301 can be recovered into the sheath body 302 and enter the blood vessel along with the sheath body 302 again, and the process is opened, released and pulled back, and the steps are repeated.

Example two, as shown in fig. 9 and 10:

in this technical solution, the embolectomy device includes a balloon 901 wrapped at the open end of the sheath body near one end of the thrombus, and the internal cavities of the balloon 901, the sheath body 302 and the handle 305 are connected to form a sealed liquid storage area for storing liquid, as shown in fig. 10, the balloon is inflated by the liquid; as shown in fig. 9, the fluid is pumped out of the balloon and the balloon is deflated.

On the basis of this, a marker layer for developing under X-ray is provided on each balloon.

Preferably, one end of the sliding block 304, which is in contact with the liquid, is provided with a piston sleeve 902, which is used for sealing a gap between the sliding block 304 and the inner cavity of the handle, so that liquid leakage can be prevented, the pressure intensity in the liquid can be kept, and the balloon can be filled with the liquid in the process of pushing the sliding block.

Other embodiments of the disclosure will be apparent to those skilled in the art from consideration of the specification and practice of the disclosure disclosed herein. This application is intended to cover any variations, uses, or adaptations of the disclosure following, in general, the principles of the disclosure and including such departures from the present disclosure as come within known or customary practice within the art to which the disclosure pertains. It is intended that the specification and examples be considered as exemplary only, with a true scope and spirit of the disclosure being indicated by the following claims.

It will be understood that the present disclosure is not limited to the precise arrangements described above and shown in the drawings and that various modifications and changes may be made without departing from the scope thereof. The scope of the present disclosure should be limited only by the attached claims.

Claims

1. Mechanical negative pressure thrombus aspiration device, its characterized in that, this mechanical negative pressure thrombus aspiration device still includes:

the suction sheath is provided with a plugging end at one end;

2. The mechanical negative pressure thrombus aspiration device of claim 1, wherein the occlusion end of the aspiration sheath is provided with an occlusion member for guiding and preventing blood leakage.

3. The mechanical negative pressure thrombus aspiration device of claim 1, wherein an end of the sheath core near the thrombus forms a tapered portion that facilitates passage through the blood vessel.

4. The mechanical negative pressure thrombus aspiration device of claim 1, wherein the thrombus filter unit further comprises a negative pressure device, and the suction end of the negative pressure device extends into the interior of the thrombus collection chamber.

5. The mechanical negative pressure thrombus aspiration device of claim 1, wherein the filter assembly comprises at least one layer of filter cotton.

6. The mechanical negative pressure thrombus aspiration device of claim 1, wherein the thrombus extraction assembly further comprises a handle, a cavity is arranged inside the handle, and the cavity of the handle is communicated with the inside of the sheath body.

7. The mechanical negative pressure thrombus aspiration device according to claim 6, wherein a sliding piece capable of reciprocating along the axial direction of the inner cavity is arranged in the inner cavity of the handle, and the sliding piece is connected with the thrombus hanging basket through a metal wire.

8. The mechanical negative pressure thrombus aspiration device according to claim 1, wherein the inside of the thrombus collection chamber is in a sealed state, and the inside of the thrombus collection chamber is connected with an external syringe for withdrawing filtered blood in the thrombus collection chamber.

9. The mechanical negative pressure thrombus aspiration device according to claim 6, wherein the thrombus extraction assembly comprises a balloon wrapped around the open end of the sheath near one end of the thrombus, the balloon, the sheath and the inner cavity of the handle are connected to form a sealed liquid storage area for storing liquid, the liquid fills the balloon, and the balloon is inflated; the liquid is pumped out of the balloon, and the balloon is contracted.

10. The mechanical negative pressure thrombus aspiration device according to claim 9, wherein the thrombus extraction basket or the balloon is provided with a marking layer for developing under X-ray.