CN117224197A - Vascular dredging and flushing device and vascular dredging and flushing method - Google Patents
Vascular dredging and flushing device and vascular dredging and flushing method Download PDFInfo
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- CN117224197A CN117224197A CN202311506356.8A CN202311506356A CN117224197A CN 117224197 A CN117224197 A CN 117224197A CN 202311506356 A CN202311506356 A CN 202311506356A CN 117224197 A CN117224197 A CN 117224197A
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- 230000002792 vascular Effects 0.000 title claims abstract description 69
- 238000011010 flushing procedure Methods 0.000 title claims abstract description 68
- 238000000034 method Methods 0.000 title claims abstract description 22
- 210000004204 blood vessel Anatomy 0.000 claims abstract description 41
- 150000001875 compounds Chemical class 0.000 claims abstract 2
- 238000004140 cleaning Methods 0.000 claims description 11
- 239000002131 composite material Substances 0.000 claims description 8
- 230000007704 transition Effects 0.000 claims description 5
- 238000004891 communication Methods 0.000 claims description 2
- 230000001457 vasomotor Effects 0.000 claims 1
- 230000008569 process Effects 0.000 abstract description 12
- 238000005520 cutting process Methods 0.000 abstract description 7
- 230000003073 embolic effect Effects 0.000 description 5
- 208000005189 Embolism Diseases 0.000 description 4
- 239000003814 drug Substances 0.000 description 4
- 239000007788 liquid Substances 0.000 description 4
- 238000000465 moulding Methods 0.000 description 3
- 206010024796 Logorrhoea Diseases 0.000 description 2
- 230000009471 action Effects 0.000 description 2
- 239000012634 fragment Substances 0.000 description 2
- 238000012423 maintenance Methods 0.000 description 2
- 208000001435 Thromboembolism Diseases 0.000 description 1
- 230000002159 abnormal effect Effects 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000000903 blocking effect Effects 0.000 description 1
- 230000008859 change Effects 0.000 description 1
- 238000013329 compounding Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 238000001914 filtration Methods 0.000 description 1
- 238000003780 insertion Methods 0.000 description 1
- 230000037431 insertion Effects 0.000 description 1
- 238000009434 installation Methods 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 230000035772 mutation Effects 0.000 description 1
- 239000002245 particle Substances 0.000 description 1
- 230000036285 pathological change Effects 0.000 description 1
- 231100000915 pathological change Toxicity 0.000 description 1
- 238000012545 processing Methods 0.000 description 1
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Abstract
The utility model provides a vascular dredging and flushing device and vascular dredging and flushing method, vascular dredging and flushing device is used for clearing up the filth in the blood vessel, including head section, middle section and tail section, wherein, the cutter body of middle section includes a plurality of mutually independent sword strip, every the sword strip is formed with the cutting edge portion that extends along sword strip length direction, the cutting edge portion extends from the near-end to the distal end, is the edge rotation center's circumference slope, simultaneously with the compound orbit that sword strip length direction is the center torsion. According to the utility model, the blade of the cutter body has high cutting efficiency, the cutter body has simple structure, the dirt is not easy to adhere on the cutter bar, the service life of the cutter body is longer, and the dirt on the cutter body is not required to be cleaned and maintained frequently in the operation process.
Description
Technical Field
The present disclosure relates to the field of medical devices, and in particular, to a vascular dredging and flushing device and a vascular dredging and flushing method.
Background
The vascular dredging and flushing device is a common operation device for treating thromboembolism, and the existing vascular dredging and flushing device dredges and clears the pathological change position of the endovascular embolism through a drill bit at the front section, and removes the abnormal change of the inner wall of the blood vessel by utilizing a cutter body so as to ensure the regularity of a vascular channel. The cutter body in the prior art is generally prepared in an integral molding mode, and is integrally sleeved or installed on the body of the vascular dredging and flushing device, however, the cutter body structure molding process in the mode is complex, the track trend of the blade part on the cutter body is limited by the integral molding process, the optimal vascular inner wall cleaning effect cannot be achieved, the installation structure and process of the cutter body on the vascular dredging and flushing device are complex, the manufacturing cost is high, the cutter body is easily blocked by dirt in a blood vessel, the service life is influenced, and the cleaning and maintenance difficulty is increased.
Disclosure of Invention
The present disclosure provides a vascular dredging flushing device and a vascular dredging flushing method.
Specifically, the present disclosure is implemented by the following technical scheme:
in a first aspect, embodiments of the present disclosure provide a vascular dredging flushing device for cleaning dirt in a blood vessel, the vascular dredging flushing device comprising:
the head section is arranged at the far end of the vascular dredging and flushing device and is used for guiding the vascular dredging and flushing device to advance in a blood vessel;
the middle section is arranged at the proximal end of the head section and at least comprises a cutter body;
the tail section is arranged at the proximal end of the middle section and is used for driving the head section and the middle section to integrally rotate along the rotation center in the blood vessel and integrally move along the length of the blood vessel;
the cutter body comprises a plurality of mutually independent cutter bars, each cutter bar is provided with a blade part extending along the length direction of the cutter bar, the blade part extends from the proximal end to the distal end and is a composite track which is inclined along the circumferential direction of the rotation center and is twisted by taking the length direction of the cutter bar as the center.
In some embodiments, the header section comprises: a spherical head part, the far end of which is hemispherical; the threaded part is cylindrical, a threaded groove is formed in the cylindrical surface, and the threaded part is arranged between the ball head part and the middle section.
In some embodiments, the middle section comprises: the conical part is formed into a transition conical surface with gradually expanding diameter from the distal end to the proximal end, and the conical part is arranged at the proximal end of the head section; the ring part is arranged at the far end of the tail section; the cutter body is arranged between the cone part and the ring part, and each cutter bar is fixedly connected with the cone part and the ring part respectively.
In some embodiments, the fixed connection position of each knife bar at the cone portion is equal to the fixed connection position of the knife bar at the ring portion, is at the same distance from the rotation center, and is staggered along the circumferential direction of the rotation center.
In some embodiments, each of the blades has a polygonal cross-sectional shape, each of the blades being twisted about its length to accommodate torsional misalignment of the cross-sectional shape of each of the blades at the location of the fixed connection of the taper to the collar.
In some embodiments, a channel is formed within the tail section, the channel communicating proximally with an external conduit.
In some embodiments, further comprising: the filter sleeve is arranged in the inner cavity of the cutter body, and the inside of the filter sleeve (90) is communicated with the channel.
In some embodiments, the filter sleeve extends within the channel to a proximal end of the tail section.
In some embodiments, the composite trajectory of the blade portion of each of the blades is the same.
In a second aspect, embodiments of the present disclosure provide a vascular dredging flushing method, using the vascular dredging flushing device of the first aspect, the method comprising:
the tail end of the vascular dredging and flushing device is connected with an external pipeline;
extending the vascular dredging and flushing device into the blood vessel;
the tail section of the vascular dredging and flushing device is rotated to drive the head section and the middle section to integrally rotate along the rotation center in the blood vessel;
the blades of the cutter body integrally rotate, and dirt in the blood vessel is cleaned by utilizing the composite track of the blade part.
According to the embodiment of the disclosure, the cutter body is formed by a plurality of mutually independent cutter bars, and as each cutter bar is manufactured independently, the cutter bar is formed flexibly and conveniently, the cutter bar is enabled to form a composite track of inclination and self torsion, and in the process that the head section and the middle section integrally rotate along the rotation center and simultaneously integrally move along the length of the blood vessel in the blood vessel, the inclined and self-torsion composite track ensures that the cutter bar has minimum resistance to the removal process of the blood vessel inner wall mutation and highest cutting efficiency of the cutter bar, and the cutter body has a simple structure, is not easy to adhere with dirt, ensures that the service life of the cutter body is longer, and does not need frequent cleaning and maintenance operations on the dirt on the cutter body in the operation process.
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 application as claimed.
Drawings
The accompanying drawings, which are incorporated in and constitute a part of this specification, illustrate embodiments consistent with the application and together with the description, serve to explain the principles of the application.
FIG. 1 is a schematic view of a first view of a vascular dredging flushing device in an embodiment of the present disclosure;
FIG. 2 is a schematic view of a second view of a vascular dredging flushing device in an embodiment of the present disclosure;
FIG. 3 is a schematic view of section A in FIG. 2;
fig. 4 is a partially enlarged schematic view at B in fig. 1.
Reference numerals:
10: a ball head portion; 20: a threaded portion; 30: a cone portion; 40: a cutter body; 41: a knife bar; 411: a blade section; 412: a first position; 413: a second position; 50: a ring portion; 60: a sleeve; 70: an end cap; 80: a joint; 90: a filter sleeve; 91: and (5) filtering holes.
Detailed Description
The present disclosure will now be discussed with reference to several embodiments. It should be understood that these embodiments are discussed only in order to enable a person of ordinary skill in the art to better understand and thus practice the present disclosure, and are not meant to imply any limitation on the scope of the present disclosure.
As used herein, the term "comprising" and variants thereof are to be interpreted as meaning "including but not limited to" open-ended terms; the terms "embodiment" and "one embodiment" are to be interpreted as "at least one embodiment"; the term "another embodiment" is to be interpreted as "at least one other embodiment"; the terms "first," "second," and the like, may refer to different or the same object; the term "disposed" is not limited to a direct connection or an indirect connection, nor to a particular manner of connection. Other explicit and implicit definitions are also possible below.
Some specific values or ranges of values may be referred to in the following description. It should be understood that these numerical values and numerical ranges are merely exemplary, which may be advantageous to put the concepts of the present disclosure into practice. However, the description of these examples is not intended to limit the scope of the present disclosure in any way. These values or ranges of values may be set otherwise, depending on the particular application and requirements.
As described above, the structure of the cutter body 40 in the prior art is not easy to form into the track of the blade 411 with high efficiency, the structure of the cutter body 40 is complex, and the blade 411 is easy to block dirt, and the vascular dredging and flushing device and the vascular dredging and flushing method according to the embodiments of the present disclosure at least partially solve the above-mentioned problems. The structure and operation of the vascular dredging flushing device according to an exemplary embodiment of the present disclosure will be described below with reference to fig. 1 to 4. As shown in fig. 1-4, the vascular dredging flushing device according to the embodiment of the present disclosure may be generally divided into three parts, i.e., a head section direction, a middle section and a tail section, where the head section direction of the vascular dredging flushing device is defined as a distal direction, the tail section direction is defined as a proximal direction, and the three parts are sequentially arranged from the distal end to the proximal end. When the vascular dredging and flushing device disclosed by the application is used for dredging and flushing a blood vessel, the head section is firstly contacted with dirt in the blood vessel, the vascular dredging and flushing device is driven by the head section to drill and guide the vascular dredging and flushing device to advance distally in the blood vessel, an operator operates the tail section to rotate, and the tail section drives the middle section and the head section to integrally rotate, so that the dirt in the blood vessel is cleared.
The head section is arranged at the proximal end of the vascular dredging and cleaning device and is used for guiding the vascular dredging and cleaning device to smoothly run in the blood vessel, wherein the distal end of the head section is shaped to be beneficial to reducing running resistance, such as a pointed shape. In one embodiment, the distal-most end of the head section may include a bulb portion 10, the bulb portion 10 being formed in a hemispherical shape, and when the vascular dredging flushing device encounters a plug during advancement, the hemispherical distal-end apex region may be inserted into the plug to some extent while ensuring that the distance in the insertion plug is not deep, and when the resistance is large and cannot be advanced, it is convenient to readjust the direction for reattempting the vascular dredging flushing device after the device is retracted.
The embolic debris that is broken by the bulb 10 will still block the vascular dredging cleaning device from continuing to travel. In one embodiment, the proximal end of the ball head 10 is further provided with a threaded portion 20, the shape of the threaded portion 20 may be cylindrical or conical, a threaded groove running in a spiral shape is formed on the outer surface of the threaded portion 20, and the embolic debris damaged by the ball head 10 may be accommodated in the threaded groove and be ejected proximally along the threaded groove as the vascular dredging cleaning device rotates.
The middle section is disposed at the proximal end of the head section, and the middle section mainly includes a cutter body 40, and the exemplary middle section includes only a cutter body 40, the cutter body 40 being directly connected with the distal head section and directly connected with the proximal tail section. In one embodiment, the middle section may also be composed of three parts of the cone 30, the cutter body 40 and the ring 50, where the three parts of the cone 30, the cutter body 40 and the ring 50 are sequentially arranged from the distal end to the proximal end, and the cone 30 is directly connected with the threaded portion 20 at the distal end, and the ring 50 is directly connected with the sleeve 60 of the tail section at the proximal end, and the cutter body 40 is connected between the cone 30 and the ring 50.
The taper portion 30 is formed as a transition taper surface gradually expanding from the distal end to the proximal end, and the transition taper surface is provided so that, on the one hand, the embolic crushed body discharged from the thread groove to the proximal end continues to move along the transition taper surface to the proximal end until being further crushed by the cutter body 40 and discharged from the passage, and on the other hand, the embolic crushed body can further perform a stable guiding function on the running of the vascular dredging flushing device. The cone portion 30 that singly sets up of this disclosed embodiment is directly connected with the screw portion 20, and wherein the screw portion 20 can be cylindrical, and cylindrical resistance of marcing that receives in screw portion 20 region can be reduced, makes the screw groove more smooth and easy, abundant to the garrulous body discharge process, and the garrulous body after discharge processing is further guided to the proximal end through cone portion 30 again, makes the resistance of whole process of marcing less, and the direction of marcing is more stable.
The cutter body 40 is mainly used for removing the variation of the inner wall of the blood vessel, and can further cut the embolism crushed body discharged from the thread groove to a certain extent. The cutter body 40 of the embodiment of the disclosure includes a plurality of cutter bars 41 that are set independently of each other, and exemplary, the number of the cutter bars 41 at least guarantees two, and two cutter bars 41 are arranged relatively along circumference, and the number of the cutter bars 41 also can be three or more, and all the cutter bars 41 are evenly arranged along circumference, and the most preferred number of the cutter bars 41 is six, so that not only can the cleaning efficiency of dirt in blood vessels be ensured, but also the dirt adhesion blocking caused by too small distance between the cutter bars 41 can be avoided.
In order to improve the efficiency of removing the variation in the inner wall of the blood vessel by the blade 41, the blade 411 is provided on the surface of the blade 41, and the variation is directly cut by the blade 411. Because the vascular dredging and flushing device rotates around the rotation center C in the working process, the vascular dredging and flushing device can advance to the deep of the blood vessel, the moving track of any point on the vascular dredging and flushing device is compounded to form a spiral shape, and in order to improve the cutting efficiency of the blade 411, the extending direction of the blade 411 is required to be consistent with the tangential direction of the spiral shape formed by the compounding as much as possible.
In order to ensure that the trajectory of the blade 411 meets the above requirements, in one embodiment, a strip having a polygonal cross-sectional shape is selected as the blade 41, and the intersection points of two adjacent sides of the polygon form the blade 411, and illustratively, a quadrangular cross-sectional shape is selected as the blade 41; after the cutter bar 41 is twisted and shaped along the center of the length direction, one end of the cutter bar 41 is fixedly connected with the large end face of the cone 30 at a first position 412, the other end of the cutter bar 41 is fixedly connected with the end face of the ring 50 at a second position 413, the positions of the first position 412 and the second position 413 in the circumferential direction of the rotation center C are staggered, and the formed track of the blade 411 is a composite track which is inclined along the circumferential direction of the rotation center C and is twisted by taking the length direction of the cutter bar 41 as the center.
In one embodiment, the plurality of knife bars 41 are arranged in the same manner, that is, the track of the edge 411 of each knife bar 41 is symmetrical and consistent in the circumferential direction of the rotation center C, so that the balance of cutting stress in the rotation process of the knife body 40 is ensured, and the position of the vascular dredging flushing device is kept stable.
In one embodiment, the large end of the cone 30 is the same diameter as the ring 50, and the first location 412 and the second location 413 are equidistant from the center of rotation C, resulting in the entire midsection being generally cylindrical while ensuring that the midsection area is less resistant to intravascular travel.
The tail section is used for driving the head section and the middle section to integrally rotate in the blood vessel along the rotation center and integrally move along the length of the blood vessel. In one embodiment, the tail section includes a sleeve 60 and an end cap 70, the sleeve 60 being hollow in interior to form a passageway through the sleeve 60, the end cap 70 being formed with an opening, the end cap 70 being provided with a fitting 80 at the opening for communication with an external conduit.
In one embodiment, the sleeve 60 is further provided with a filter sleeve 90 inside, a part of the filter sleeve 90 is located in a central area surrounded by the plurality of cutter bars 41, and another part of the filter sleeve 90 is penetrated inside the sleeve 60, and the filter sleeve 90 may extend through the sleeve 60 until being communicated with the joint 80; the filter sleeve 90 may be cylindrical as a whole, and a plurality of filter holes 91 are formed in the region of the cutter body 40 where the filter sleeve 90 is located, so as to intercept and continue the large-particle intravascular dirt, and cut the cutter bar 41 of the cutter body 40 again, or intercept and avoid the dirt in the liquid medicine from being injected into the blood vessel.
The vascular dredging and flushing device disclosed by the embodiment of the application is used for dredging and flushing blood vessels, and comprises the following steps:
s1, connecting an external pipeline at the tail end of a vascular dredging flushing device, connecting the external pipeline through a connector 80, enabling the external pipeline to be communicated with a channel and a filter sleeve 90, wherein the other end of the external pipeline can be connected with a negative pressure device for sucking dirt in a blood vessel, and can also be connected with a liquid medicine for injecting the liquid medicine into the blood vessel for flushing;
s2, stretching the vascular dredging and flushing device into the blood vessel, and slowly pushing the vascular dredging and flushing device from the end part of the blood vessel by an operator holding the tail section by hand;
s3, an operator applies a rotating force through the tail section to enable the vascular dredging flushing device to integrally rotate, in the process, the vascular dredging flushing device rotates and advances to the deep of a blood vessel under the action of the thread groove, the ball head 10 plays a guiding role, and partial embolic fragments are discharged to the proximal end through the thread groove;
s4, when the inner wall of the blood vessel has variation, the plurality of cutter bars 41 integrally rotate, the variation is cut by the blade 411 along the tangential direction of the spiral advancing track, and the cut variation and the discharged embolism fragments are discharged to an external pipeline through the filter sleeve 90 under the action of negative pressure;
and S5, introducing liquid medicine into the blood vessel, and flushing the blood vessel after the cutting and cleaning.
Any references to directions and orientations in the description of the embodiments herein are for convenience only and should not be construed as limiting the scope of the application in any way. The description of the preferred embodiments will refer to combinations of features, which may be present alone or in combination, and the application is not particularly limited to the preferred embodiments. The scope of the application is defined by the claims.
The foregoing description of the preferred embodiments of the application is not intended to be limiting, but rather is intended to cover all modifications, equivalents, alternatives, and improvements that fall within the spirit and scope of the application.
Claims (10)
1. A vascular dredging and flushing device for cleaning dirt in a blood vessel, which is characterized in that the vascular dredging and flushing device comprises:
the head section is arranged at the far end of the vascular dredging and flushing device and is used for guiding the vascular dredging and flushing device to advance in a blood vessel;
the middle section is arranged at the proximal end of the head section and at least comprises a cutter body;
the tail section is arranged at the proximal end of the middle section and is used for driving the head section and the middle section to integrally rotate along the rotation center in the blood vessel and integrally move along the length of the blood vessel;
the cutter body comprises a plurality of mutually independent cutter bars (41), each cutter bar (41) is provided with a blade part (411) extending along the length direction of the cutter bar (41), and the blade parts (411) extend from the proximal end to the distal end and form a composite track inclined along the circumferential direction of the rotation center (C) and twisted by taking the length direction of the cutter bar (41) as the center.
2. The vascular dredging flushing device of claim 1, wherein the head section comprises:
a bulb part (10) with a hemispherical distal end;
the threaded part (20) is cylindrical, a threaded groove is formed in the cylindrical surface, and the threaded part (20) is arranged between the ball head part (10) and the middle section.
3. The vascular dredging flushing device of claim 1, wherein the middle section comprises:
a tapered portion (30) formed as a transition tapered surface gradually expanding from a distal end to a proximal end, the tapered portion (30) being provided at the proximal end of the head section;
a loop (50) disposed distally of the tail section;
the cutter body is arranged between the cone portion (30) and the ring portion (50), and each cutter bar (41) is fixedly connected with the cone portion (30) and the ring portion (50) respectively.
4. A vascular dredging flushing device according to claim 3, wherein each blade (41) is equally spaced from the centre of rotation (C) and staggered in circumferential position along the centre of rotation (C) in a fixed connection position of the cone (30) and in a fixed connection position of the ring (50).
5. A vascular dredging flushing device as claimed in claim 3, wherein each blade (41) has a polygonal cross-sectional shape, each blade (41) being twisted centred along its length to adapt the cross-sectional shape of each blade (41) to the twist phase at the location of the fixed connection of the cone (30) with the ring (50).
6. The vasomotor flushing device of claim 1, wherein a passageway is formed within the tail section, the passageway being in communication with an external conduit at a proximal end.
7. The vascular dredging flushing device of claim 6, further comprising:
the filter sleeve (90) is arranged in the inner cavity of the cutter body, and the inside of the filter sleeve (90) is communicated with the channel.
8. The vascular dredging flushing device of claim 7, wherein the filter sleeve (90) extends within the channel to a proximal end of the tail section.
9. Vascular dredging flushing device according to claim 1, characterized in that the compound trajectory of the blade portions (411) of each blade bar (41) is identical.
10. A vascular dredging flushing method using a vascular dredging flushing device as claimed in any one of claims 1-9, the method comprising:
the tail end of the vascular dredging and flushing device is connected with an external pipeline;
extending the vascular dredging and flushing device into the blood vessel;
the tail section of the vascular dredging and flushing device is rotated to drive the head section and the middle section to integrally rotate along the rotation center in the blood vessel;
the blades (41) of the blade body integrally rotate, and the composite track of the blade part (411) is utilized to clean dirt in blood vessels.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202311506356.8A CN117224197B (en) | 2023-11-13 | 2023-11-13 | Vascular dredging and flushing device and vascular dredging and flushing method |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202311506356.8A CN117224197B (en) | 2023-11-13 | 2023-11-13 | Vascular dredging and flushing device and vascular dredging and flushing method |
Publications (2)
| Publication Number | Publication Date |
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| CN117224197A true CN117224197A (en) | 2023-12-15 |
| CN117224197B CN117224197B (en) | 2024-02-06 |
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| CN202311506356.8A Active CN117224197B (en) | 2023-11-13 | 2023-11-13 | Vascular dredging and flushing device and vascular dredging and flushing method |
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| US20140243882A1 (en) * | 2013-02-22 | 2014-08-28 | Jianlu Ma | Design and methods for a device with blood flow restriction feature for embolus removal in human vasculature |
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| Publication number | Publication date |
|---|---|
| CN117224197B (en) | 2024-02-06 |
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