CN211325885U - Embolism protector - Google Patents

Abstract

The utility model discloses an embolism protector relates to medical instrument technical field, including filter screen and pipe, the end opening indicator is close to the upper portion fixedly connected with of filter screen, and the one end that the pipe is close to the filter screen is equipped with the radiopaque mark of pipe distal end, and the inside of pipe is equipped with catches the seal wire, catches the one end fixedly connected with near-end of seal wire near the filter screen and catches the silk. The utility model discloses a set up pig intestines mucosa heparin coating, ensure that the filter screen keeps open state during the expansion, can catch the great embolism of diameter, still help maintaining the patency of filter screen, increase filter screen and the laminating area of vascular wall, through setting up near end mouth indicator, be convenient for observe the filter screen under the fluorescence perspective mirror and whether expand, supplementary filter screen is fixed a position and is receive and release, through setting up the radiopaque mark of pipe distal end, not only be convenient for fix a position the pipe, still help the location of filter screen.

Description

Embolism protector

Technical Field

The utility model relates to the technical field of medical equipment, in particular to an embolism protector.

Background

Emboli are intravascular masses that lodge in stenotic vessels causing blockage of the vessel at distal body parts, such as in valve repair or replacement procedures, manipulation of calcified valves can result in migration of calcified material, tissue particles and other debris, which can potentially form clumps, thereby forming an embolism which, if located in the heart or aorta, may cause an occlusion in any part of the body, embolic debris may migrate, one way to reduce the risk of these complications, through the circulatory system and resulting in vascular occlusion, blood clots and cerebrovascular accidents, and stroke, is to place an embolic protector downstream of the surgical treatment site, capturing any emboli that may occlude the vessel, once captured, the embolic protector must be carefully closed and removed from the patient's body, avoiding the captured emboli from being reissued into the vessel.

A embolism protector for cerebral vessel protection that discloses in chinese utility model patent application laid-open specification CN201595959U, the nickel titanium alloy skeleton that is provided with stronger holding power on the umbrella package, when catching the embolism in the blood vessel, because blockking of skeleton, can't catch the great embolism of granule, and the bending ability and the flexibility of skeleton are not high, can't ensure that the umbrella package quilt expandes completely, the umbrella package filter screen is probably blockked up to reduce blood flow speed, be not convenient for observe whether the umbrella package expandes and concrete position completely.

SUMMERY OF THE UTILITY MODEL

Technical problem to be solved

To the not enough of prior art, the utility model provides an embolism protector has solved the problem of proposing in the above-mentioned background art.

(II) technical scheme

In order to achieve the above purpose, the utility model discloses a following technical scheme realizes: including filter screen and pipe, the interior roof fixedly connected with of filter screen is end mouth indicator near, the both ends difference fixedly connected with near-end radiopaque marker area and the radiopaque marker area of distal end of filter screen, the one end that the pipe is close to the filter screen is equipped with the radiopaque marker of pipe distal end, the inside of pipe is equipped with catches the seal wire, catch the one end fixedly connected with near-end that the seal wire is close to the filter screen and catch the silk.

Optionally, the filter screen is made of nitinol alloy, and a heparin coating of porcine intestinal mucosa is arranged on the surface of the filter screen.

Optionally, the near-end indicator is made of gold-tungsten alloy, and the near-end indicator is arc-shaped.

Optionally, a tip coil is fixedly connected to one end of the proximal capturing wire far away from the capturing guide wire, and a distal capturing wire is fixedly connected to one end of the tip coil.

Optionally, the diameter of the distal capturing wire is smaller than that of the proximal capturing wire, and a distal soft joint is fixedly connected to one end of the distal capturing wire, which is far away from the tip coil.

Optionally, the proximal and distal radiopaque marker bands are double-walled sleeves, the proximal capture wire is slidably connected to the proximal radiopaque marker band, and the distal capture wire is slidably connected to the distal radiopaque marker band.

Optionally, the diameter of the capturing guide wire is 0.36mm, the outer surface of the capturing guide wire is provided with a polytetrafluoroethylene coating, and one side of the capturing guide wire, which is far away from the proximal capturing wire, is provided with a mark

(III) advantageous effects

The utility model provides a plug protector possesses following beneficial effect:

1. this embolism protector through set up pig intestines mucosa heparin coating on the surface at the filter screen, ensures that the filter screen keeps open state during the expansion, and the great embolism of diameter can be caught to the laminating area of increase filter screen and vascular wall, still helps maintaining the patency of filter screen, avoids the filter screen to be blockked up, improves the efficiency of catching piece in the blood vessel.

2. This embolism protector through setting up near end mouth indicator, is convenient for observe the filter screen under the fluorescence perspective mirror and whether expand completely, and supplementary filter screen is fixed a position and is receive and release, and in addition, through setting up the radiopaque marker of pipe distal end, when catching the embolism, need align the radiopaque marker area of distal end and the radiopaque marker of pipe distal end, not only be convenient for fix a position the pipe, still help the location of filter screen.

Drawings

FIG. 1 is a schematic sectional view of the present invention;

FIG. 2 is a schematic cross-sectional view of the filter screen of the present invention;

fig. 3 is a schematic structural view of the near-end indicator of the present invention;

fig. 4 is a schematic structural diagram of the marking of the present invention.

In the figure: 1. filtering with a screen; 2. a proximal port indicator; 3. a proximal radiopaque marker band; 4. a distal radiopaque marker band; 5. a proximal capture filament; 6. a tip coil; 7. a distal soft joint; 8. capturing a guidewire; 9. a conduit; 10. a radiopaque marker at the distal end of the catheter; 11. a distal capture filament; 12. and (6) marking.

Detailed Description

The technical solutions in the embodiments of the present invention will be described clearly and completely with reference to the accompanying drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only some embodiments of the present invention, not all embodiments.

Referring to fig. 1 to 4, the present invention provides a technical solution: the embolism protector comprises afilter screen 1 and acatheter 9, wherein thefilter screen 1 is made of nitinol alloy, the surface of thefilter screen 1 is provided with a pig intestine mucosa heparin coating, the pig intestine mucosa heparin coating is arranged on the surface of thefilter screen 1 to ensure that thefilter screen 1 is kept in an open state during expansion, emboli with larger diameter can be captured, the smoothness of thefilter screen 1 is facilitated to be maintained, thefilter screen 1 is prevented from being blocked, the attaching area of thefilter screen 1 and the vascular wall is increased, the efficiency of capturing debris in blood vessels is improved, the inner top wall of thefilter screen 1 is fixedly connected with a near-end mouth indicator 2, the near-end mouth indicator 2 is made of gold-tungsten alloy, the near-end mouth indicator 2 is arc-shaped, through the arrangement of the near-end mouth indicator 2, whether thefilter screen 1 is expanded under a fluorescence perspective mirror is convenient, thefilter screen 1 is assisted to be positioned and retracted, two ends of the filter screen, the near-end radiopaque marker band 3 and the far-endradiopaque marker band 4 are double-layer sleeves, one end of thecatheter 9, which is close to thefilter screen 1, is provided with a catheter far-end radiopaque marker 10, the far-endradiopaque marker band 4 is aligned with the catheter far-end radiopaque marker 10 when an embolism is captured by arranging the catheter far-end radiopaque marker 10, thecatheter 9 is convenient to position, thefilter screen 1 is also beneficial to positioning of thefilter screen 1, the captured embolism and thefilter screen 1 are pulled into thecatheter 9 during recovery, the embolism is prevented from leaking out of thefilter screen 1 and transferring into a blood vessel again, the inside of thecatheter 9 is provided with a capturingguide wire 8, one end, which is close to thefilter screen 1, of the capturingguide wire 8 is fixedly connected with a near-end capturing wire 5, the diameter of the capturingguide wire 8 is 0.36mm, the outer surface of the capturingguide wire 8, through setting upmark 12,mark 12 department can snap off fast and catchguidewire 8, it is comparatively swift to change the length of catchingguidewire 8, be convenient for break off catchingguidewire 8 to suitable length when needs, the one end fixedly connected withtip coil 6 of catchingguidewire 8 is kept away from to near-end catching silk 5,tip coil 6 is used for limiting the near-end radiopaque marking area 3 and the removal of distal endradiopaque marking area 4, and then limit the position offilter screen 1 in a certain extent, the one end fixedly connected with distalend catching silk 11 oftip coil 6, the diameter of distalend catching silk 11 is less than near-end catching silk 5, the one end fixedly connected with distal endsoft joint 7 of distalend catching silk 11 keeping away fromtip coil 6, near-end catching silk 5 and near-end radiopaque marking area 3 sliding connection, distalend catching silk 11 and distal endradiopaque marking area 4 sliding connection.

When the embolic protector is used, the capturingguide wire 8 is broken at themark 12 according to the position of a lesion as required, the capturingguide wire 8 is firmly held by two hands at two sides of themark 12, the capturingguide wire 8 is broken, the length of the rest capturingguide wire 8 is suitable for use, when the embolic protector is used, thecatheter 9 containing the capturingguide wire 8 and thefilter screen 1 is slightly pushed in a blood vessel by means of a medical imaging technology device until thedistal radiopaque marker 10 of the catheter is conveyed to a position at least 4-5cm away from the distal end of the lesion, thecatheter 9 is held without movement, the capturingguide wire 8 is slightly pushed forward until the distalsoft joint 7 is flush with thedistal radiopaque marker 10 of the catheter, the position of the proximal radiopaque marker band 3 is observed under a fluoroscope, the position of thefilter screen 1 is adjusted, the proximal radiopaque marker band 3 is ensured to be at least 2cm away from the distal edge of the lesion, and the capturingguide wire 8, theguide tube 9 is slightly pulled back to expose and spread thefilter screen 1 in the blood vessel, the pig intestinal mucosa heparin coating enables thefilter screen 1 to be quickly spread and attached to the inner wall of the blood vessel, after thefilter screen 1 is correctly opened, a goldenproximal port indicator 2 can be seen under the fluoroscope, thefilter mesh 1, the proximal radiopaque marker band 3 and the distalradiopaque marker band 4 are confirmed to be attached to the inner wall of the blood vessel by using medical imaging technology equipment, after the interventional operation is completed, when it is desired to remove thescreen 1 and the embolus, the capturingguidewire 8 is held stationary, thecatheter 9 is pushed, thedistal radiopaque marker 10 of the catheter is observed by means of a fluoroscope and thedistal radiopaque marker 10 of the catheter is pushed to the middle of the distalsoft joint 7, thescreen 1 with the debris and the embolus is made to enter the interior of thecatheter 9, and subsequently, the capturingguidewire 8 and thecatheter 9 are pulled, and the capturingguidewire 8 and thecatheter 9 are taken out as a whole.

The utility model discloses a theory of operation and beneficial effect: tissue particles and other debris generated during operation are retained in a blood vessel and possibly form embolism, a filter screen on an embolism protector can capture the debris and the embolism in the blood vessel, the filter screen and the embolism can be taken out together by using a guide wire, thefilter screen 1 is ensured to keep an open state during expansion by arranging a heparin coating of porcine intestinal mucosa on the surface of thefilter screen 1, the embolism with a larger diameter can be captured, the smoothness of thefilter screen 1 is further favorably maintained, thefilter screen 1 is prevented from being blocked, the attaching area of thefilter screen 1 and the blood vessel wall is increased, the efficiency of capturing the debris in the blood vessel is improved, whether thefilter screen 1 is expanded or not is conveniently observed under a fluoroscope by arranging a near-end mouth indicator 2, thefilter screen 1 is assisted to be positioned and stored, in addition, by arranging a catheter far-end radiopaque marker 10, when the embolism is captured, a far-end radiopaque marker 4 is aligned with the catheter far, not only facilitates the positioning of theduct 9, but also facilitates the positioning of thesieve 1.

The above, only be the concrete implementation of the preferred embodiment of the present invention, but the protection scope of the present invention is not limited thereto, and any person skilled in the art is in the technical scope of the present invention, according to the technical solution of the present invention and the utility model, the concept of which is equivalent to replace or change, should be covered within the protection scope of the present invention.

Claims (7)

1. Embolic protector, including filter screen (1) and pipe (9), its characterized in that: interior roof fixedly connected with of filter screen (1) is near end mouth indicator (2), the both ends difference fixedly connected with near-end radiopaque marker area (3) and distal end radiopaque marker area (4) of filter screen (1), the one end that pipe (9) are close to filter screen (1) is equipped with pipe distal end radiopaque marker (10), the inside of pipe (9) is equipped with catches seal wire (8), catch seal wire (8) and be close to one end fixedly connected with near-end catching silk (5) of filter screen (1).

2. An embolic protector as in claim 1, wherein: the filter screen (1) is made of nitinol alloy, and the surface of the filter screen (1) is provided with a heparin coating of porcine intestinal mucosa.

3. An embolic protector as in claim 1, wherein: the near-end opening indicator (2) is made of gold-tungsten alloy, and the near-end opening indicator (2) is arc-shaped.

4. An embolic protector as in claim 1, wherein: the end, far away from the capturing guide wire (8), of the proximal capturing wire (5) is fixedly connected with a pointed coil (6), and the end of the pointed coil (6) is fixedly connected with a distal capturing wire (11).

5. An embolic protector as in claim 4, wherein: the diameter of the distal capturing wire (11) is smaller than that of the proximal capturing wire (5), and one end, far away from the tip coil (6), of the distal capturing wire (11) is fixedly connected with a distal soft joint (7).

6. An embolic protector as in claim 4, wherein: the proximal radiopaque marker band (3) and the distal radiopaque marker band (4) are double-layer sleeves, the proximal capturing wire (5) is in sliding connection with the proximal radiopaque marker band (3), and the distal capturing wire (11) is in sliding connection with the distal radiopaque marker band (4).

7. An embolic protector as in claim 1, wherein: the diameter of the capturing guide wire (8) is 0.36mm, the outer surface of the capturing guide wire (8) is provided with a polytetrafluoroethylene coating, and one side, far away from the near-end capturing wire (5), of the capturing guide wire (8) is provided with a mark (12).

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