CN112401972B - Device for removing thrombus from external water film of catheter - Google Patents

Device for removing thrombus from external water film of catheter Download PDF

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Publication number
CN112401972B
CN112401972B CN202011294327.6A CN202011294327A CN112401972B CN 112401972 B CN112401972 B CN 112401972B CN 202011294327 A CN202011294327 A CN 202011294327A CN 112401972 B CN112401972 B CN 112401972B
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water film
catheter
recovery
diameter
conduit
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CN202011294327.6A
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CN112401972A (en
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杨青林
王泱
宋浩
赵保健
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Jiangsu Jintai Medical Instrument Co ltd
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Jiangsu Jintai Medical Instrument Co ltd
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    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61B—DIAGNOSIS; SURGERY; IDENTIFICATION
    • A61B17/00—Surgical instruments, devices or methods, e.g. tourniquets
    • A61B17/22—Implements for squeezing-off ulcers or the like on the inside of inner organs of the body; Implements for scraping-out cavities of body organs, e.g. bones; Calculus removers; Calculus smashing apparatus; Apparatus for removing obstructions in blood vessels, not otherwise provided for
    • A61B17/22004—Implements for squeezing-off ulcers or the like on the inside of inner organs of the body; Implements for scraping-out cavities of body organs, e.g. bones; Calculus removers; Calculus smashing apparatus; Apparatus for removing obstructions in blood vessels, not otherwise provided for using mechanical vibrations, e.g. ultrasonic shock waves
    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61B—DIAGNOSIS; SURGERY; IDENTIFICATION
    • A61B17/00—Surgical instruments, devices or methods, e.g. tourniquets
    • A61B17/32—Surgical cutting instruments
    • A61B17/3203—Fluid jet cutting instruments
    • A61B17/32037—Fluid jet cutting instruments for removing obstructions from inner organs or blood vessels, e.g. for atherectomy
    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61B—DIAGNOSIS; SURGERY; IDENTIFICATION
    • A61B17/00—Surgical instruments, devices or methods, e.g. tourniquets
    • A61B17/22—Implements for squeezing-off ulcers or the like on the inside of inner organs of the body; Implements for scraping-out cavities of body organs, e.g. bones; Calculus removers; Calculus smashing apparatus; Apparatus for removing obstructions in blood vessels, not otherwise provided for
    • A61B2017/22079—Implements for squeezing-off ulcers or the like on the inside of inner organs of the body; Implements for scraping-out cavities of body organs, e.g. bones; Calculus removers; Calculus smashing apparatus; Apparatus for removing obstructions in blood vessels, not otherwise provided for with suction of debris

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  • Health & Medical Sciences (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • Surgery (AREA)
  • Engineering & Computer Science (AREA)
  • Medical Informatics (AREA)
  • Nuclear Medicine, Radiotherapy & Molecular Imaging (AREA)
  • Biomedical Technology (AREA)
  • Heart & Thoracic Surgery (AREA)
  • Vascular Medicine (AREA)
  • Molecular Biology (AREA)
  • Animal Behavior & Ethology (AREA)
  • General Health & Medical Sciences (AREA)
  • Public Health (AREA)
  • Veterinary Medicine (AREA)
  • Mechanical Engineering (AREA)
  • Orthopedic Medicine & Surgery (AREA)
  • Surgical Instruments (AREA)

Abstract

The invention relates to the technical field of thrombus removal equipment for medical instruments, in particular to a thrombus removal device for a water film outside a catheter, which comprises a recovery catheter and a conveying catheter, wherein the recovery catheter comprises a catheter body, a catheter diameter-variable part and a catheter head which are sequentially communicated; the conveying conduit is positioned in the recovery conduit, the head end of the conveying conduit penetrates through the side wall of the conduit variable-diameter part to extend to the outer side of the conduit variable-diameter part and is communicated with the circular water film generation ring, and the tail end of the conduit head is sleeved with the water film generation ring; the tail end of the water film generation ring is provided with a plurality of water film spray holes, and the spray directions of the water film spray holes and the axis of the recovery guide pipe are arranged in an inclined angle from outside to inside; the invention provides a catheter external water film thrombus removal device, which is used for removing thrombus, has the advantages of good safety, short treatment time, high removal efficiency and the like, and can be used for removing acute and subacute thrombus.

Description

Device for removing thrombus from external water film of catheter
Technical Field
The invention relates to the technical field of thrombus removal equipment for medical instruments, in particular to a catheter external water film thrombus removal device.
Background
Mechanical thrombectomy has become an important method for treating peripheral vascular thrombotic diseases, and vacuum direct aspiration, rheological excision, rotary cutting and the like are available at present. A plurality of clinical researches show that the rheologic excision is the most safe and effective method for treating thrombus, and has the advantages of high thrombus removal efficiency, small injury to blood vessels and simple and convenient operation. US2006129091A1 discloses a rheological thrombectomy device, which removes thrombi by bernoulli principle generated by high-pressure sprayed liquid, and has the disadvantages of good treatment effect on acute thrombi and obviously reduced subacute thrombi removal efficiency. Therefore, there is a need to develop a thrombus removal device that can improve the efficiency of removal of the subacute thrombus with high safety by improving the efficiency of removal of the liquid jet.
Disclosure of Invention
Aiming at the defects of the prior art, the invention provides a catheter external water film thrombus removal device, which is used for removing thrombus, has the advantages of good safety, short treatment time, high removal efficiency and the like, and can be used for removing acute and subacute thrombus.
The invention is realized by the following technical scheme:
a water film embolus removing device outside a guide pipe comprises a recovery guide pipe and a conveying guide pipe, wherein the recovery guide pipe comprises a guide pipe body part, a guide pipe variable diameter part and a guide pipe head part which are sequentially communicated;
the conveying guide pipe is positioned in the recovery guide pipe, the head end of the conveying guide pipe penetrates through the side wall of the guide pipe variable-diameter part, extends to the outer side of the guide pipe variable-diameter part and is communicated with a circular water film generation ring, and the tail end of the head of the guide pipe is sleeved with the water film generation ring;
the tail end of the water film generation ring is provided with a plurality of water film spray holes, and the spray directions of the water film spray holes and the axis of the recovery guide pipe are arranged in an inclined angle from outside to inside;
the pipe reducing portion includes the first reducing portion that head end set up and the second reducing portion that tail end set up, a plurality of recovery holes have been seted up to circumference on the circumference lateral wall of second reducing portion.
Preferably, the first diameter-changing portion and the second diameter-changing portion are both arranged in a tapered structure, and the diameter of the first diameter-changing portion gradually increases from the head end to the tail end; the second diameter-changing portion gradually decreases in diameter from the tail end to the head end.
Preferably, the catheter head is provided with a conical structure with gradually reduced diameter from the tail end to the head end.
Preferably, the water film generating ring and the head end of the catheter body are all sleeved with a developing positioning ring, and the developing positioning ring is made of a platinum ring material.
Preferably, the number of the water film spray holes and the recovery holes is at least three, and the water film spray holes and the recovery holes are arranged in a one-to-one correspondence manner, so that liquid sprayed by the water film spray holes directly enters the recovery holes.
Preferably, the water film spray holes are arranged in a rectangular structure, and the recovery holes are arranged in a pear-shaped structure.
Preferably, the tail end of the conveying conduit is communicated with the output end of an external liquid pulse generator, so that external high-pressure liquid flows into the water film generation ring through the conveying conduit and is sprayed out through the water film spray holes on the water film generation ring to form a water film jet flow for crushing thrombus.
Preferably, the tail end of the recovery catheter is communicated with the input end of an external suction device, so that negative pressure is generated in the inner cavity of the recovery catheter, and thrombus is sucked through the recovery hole.
Preferably, the tail end of the recovery catheter further comprises an external recovery bag, so that the crushed thrombus recovered in the recovery catheter flows into the external recovery bag.
The invention has the beneficial effects that:
by adopting the design and the use of the structure, the thrombus is directly crushed by the external water film thrombus removing device of the catheter by using high-pressure water film jet flow, and the thrombus is pushed to enter the recovery hole, so that the thrombus removing efficiency is improved. The high-pressure water film jet flow direction is from outside to inside, and the high-pressure water film jet flow does not contact with the vessel wall and can not damage the vessel wall and surrounding tissues;
the invention has the advantages of good safety, short treatment time, high clearing efficiency and the like when being used for clearing thrombus, and can be used for clearing acute thrombus and subacute thrombus;
the invention has novel structure, reasonable design, low manufacturing cost, convenient use and stronger practicability.
Drawings
In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings used in the description of the embodiments or the prior art will be briefly described below, it is obvious that the drawings in the following description are only some embodiments of the present invention, and for those skilled in the art, other drawings can be obtained according to the drawings without creative efforts.
FIG. 1 is a schematic perspective view of the present invention;
FIG. 2 is a partial enlarged view of A in the present invention;
fig. 3 is a front cross-sectional view of the present invention.
In the figure: 1-recovery conduit, 11-conduit body part, 12-conduit variable diameter part, 121-first variable diameter part, 122-second variable diameter part, 13-conduit head part, 2-conveying conduit, 3-water film generation ring, 4-water film spray hole, 5-recovery hole and 6-development positioning ring.
Detailed Description
In order to make the objects, technical solutions and advantages of the embodiments of the present invention clearer, the technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are some, but not all, embodiments of the present invention. All other embodiments, which can be obtained by a person skilled in the art without inventive step based on the embodiments of the present invention, are within the scope of protection of the present invention.
The first embodiment is as follows:
a water film embolus removing device outside a guide pipe comprises a recovery guide pipe 1 and a conveying guide pipe 2, wherein the recovery guide pipe 1 comprises a guide pipe body part 11, a guide pipe variable-diameter part 12 and a guide pipe head part 13 which are sequentially communicated;
the conveying conduit 2 is positioned inside the recovery conduit 1, the head end of the conveying conduit penetrates through the side wall of the conduit variable-diameter part 12, extends to the outer side of the conduit variable-diameter part 12 and is communicated with the circular water film generation ring 3, and the tail end of the conduit head 13 is sleeved with the water film generation ring 3;
the tail end of the water film generation ring 3 is provided with a plurality of water film spray holes 4, and the spray directions of the water film spray holes 4 and the axis of the recovery catheter 1 are arranged in an inclined angle from outside to inside;
the catheter diameter-changing portion 12 includes a first diameter-changing portion 121 provided at a head end and a second diameter-changing portion 122 provided at a tail end, and a plurality of recovery holes 5 are circumferentially opened on a circumferential side wall of the second diameter-changing portion 122.
Specifically, the first diameter-changing portion 121 and the second diameter-changing portion 122 are both arranged in a tapered structure, and the diameter of the first diameter-changing portion 121 gradually increases from the head end to the tail end; the second diameter-changing portion 122 gradually decreases in diameter from the tail end to the head end.
Specifically, the catheter tip 13 is formed in a tapered shape with a gradually decreasing diameter from the tail end to the tip end.
Specifically, the water film generation ring 3 and the head end of the conduit body 11 are both sleeved with a development positioning ring 6, and the development positioning ring 6 is made of a platinum ring material.
Specifically, the number of the water film spray holes 4 and the recovery holes 5 is at least three, and the water film spray holes 4 and the recovery holes 5 are in one-to-one correspondence with each other, so that liquid sprayed by the water film spray holes 4 directly enters the recovery holes 5.
Specifically, the water film spray holes 4 are arranged in a rectangular structure, and the recovery holes 5 are arranged in a pear-shaped structure.
Specifically, the tail end of the conveying conduit 2 is communicated with the output end of an external liquid pulse generator, so that external high-pressure liquid flows into the water film generation ring 3 through the conveying conduit 2 and is sprayed out through water film spray holes 4 on the water film generation ring 3 to form water film jet flow for crushing thrombus.
Specifically, the tail end of the recovery catheter 1 is communicated with the input end of an external suction device, so that negative pressure is generated in the inner cavity of the recovery catheter 1, and thrombus is sucked through the recovery hole 5.
Specifically, the tail end of the recovery catheter 1 further includes an external recovery bag provided therein, so that the crushed thrombus recovered in the recovery catheter 1 flows into the external recovery bag.
The working principle is as follows: when the invention is used, the guide wire guides the head end of the device to reach the thrombus plaque area during operation, the guide wire is withdrawn, and the device is positioned by two developing positioning rings 6 of the recovery catheter 1. Starting the liquid pulse generator, the high-pressure liquid flows to the water film generation ring 3 from the conveying conduit 2 and is sprayed out from the water film spray holes 4 to form water film jet flow. The suction device is activated simultaneously and the cavity inside the recovery catheter 1 generates a negative pressure. The thrombus is sucked into the catheter diameter-varying portion 12 of the recovery catheter 1 by the negative pressure generated by the high-pressure water film jet and the negative pressure generated by the suction device, and enters the water film jet ejection range. The water film jet flow crushes the thrombus and directly pushes part of the thrombus into the recovery holes 5. Other crushed thrombi are sucked into the recovery hole 5 by negative pressure and enter the recovery bag through the recovery catheter 1. Because the high-pressure liquid is directly sprayed into the recovery holes 5, the condition that the recovery holes 5 are blocked cannot occur, the thrombus removing time is shortened, and the risk of adverse events is reduced.
Furthermore, under the design and the use of the structure, the thrombus is directly crushed by the external water film thrombus removal device of the catheter by using high-pressure water film jet flow, and the thrombus is pushed to enter the recovery hole 5, so that the thrombus removal efficiency is improved. The high-pressure water film jet flow direction is from outside to inside, and the high-pressure water film jet flow does not contact with the vessel wall and can not damage the vessel wall and surrounding tissues. The thrombus removal device with the water film outside the catheter has the advantages of good safety, short treatment time, high removal efficiency and the like, and can be used for removing acute and subacute thrombus.
The above examples are only intended to illustrate the technical solution of the present invention, but not to limit it; although the present invention has been described in detail with reference to the foregoing embodiments, it will be understood by those of ordinary skill in the art that: the technical solutions described in the foregoing embodiments may still be modified, or some technical features may be equivalently replaced; and such modifications or substitutions do not depart from the spirit and scope of the corresponding technical solutions of the embodiments of the present invention.

Claims (5)

1. A water film thrombectomy device outside a catheter, which comprises a recovery catheter (1) and a conveying catheter (2), and is characterized in that: the recovery conduit (1) comprises a conduit body part (11), a conduit variable-diameter part (12) and a conduit head part (13) which are sequentially communicated;
the conveying guide pipe (2) is positioned in the recovery guide pipe (1), the head end of the conveying guide pipe penetrates through the side wall of the guide pipe variable-diameter part (12) to extend to the outer side of the guide pipe variable-diameter part (12) and is communicated with the circular water film generation ring (3), and the tail end of the guide pipe head (13) is sleeved with the water film generation ring (3);
a plurality of water film spray holes (4) are formed in the tail end of the water film generation ring (3), and the spray directions of the water film spray holes (4) and the axis of the recovery guide pipe (1) are arranged in an inclined angle from outside to inside;
the guide pipe diameter-variable part (12) comprises a first diameter-variable part (121) arranged at a head end and a second diameter-variable part (122) arranged at a tail end, and a plurality of recovery holes (5) are formed in the circumferential side wall of the second diameter-variable part (122) in the circumferential direction;
the first variable-diameter part (121) and the second variable-diameter part (122) are arranged in a conical structure, and the diameter of the first variable-diameter part (121) is gradually increased from the head end to the tail end; the second diameter-changing part (122) gradually decreases in diameter from the tail end to the head end;
the catheter head (13) is in a conical structure with gradually reduced diameter from the tail end to the head end;
the number of the water film spray holes (4) and the recovery holes (5) is at least three, and the water film spray holes and the recovery holes are in one-to-one correspondence, so that liquid sprayed by the water film spray holes (4) directly enters the recovery holes (5);
the water film spray holes (4) are arranged in a rectangular structure, and the recovery holes (5) are arranged in a pear-shaped structure.
2. The catheter external water film embolectomy device of claim 1, wherein: ring (3) takes place for the water film with the head end of catheter body portion (11) all overlaps and is equipped with development holding ring (6), just development holding ring (6) are made for the platinum ring material.
3. The catheter external water membrane embolectomy device of claim 1, wherein: the tail end of the conveying conduit (2) is communicated with the output end of an external liquid pulse generator.
4. The catheter external water membrane embolectomy device of claim 1, wherein: the tail end of the recovery conduit (1) is communicated with the input end of an external suction device.
5. The catheter external water membrane embolectomy device of claim 4, wherein: the tail end of the recovery catheter (1) further comprises an external recovery bag provided.
CN202011294327.6A 2020-11-18 2020-11-18 Device for removing thrombus from external water film of catheter Active CN112401972B (en)

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CN202011294327.6A CN112401972B (en) 2020-11-18 2020-11-18 Device for removing thrombus from external water film of catheter

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Application Number Priority Date Filing Date Title
CN202011294327.6A CN112401972B (en) 2020-11-18 2020-11-18 Device for removing thrombus from external water film of catheter

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CN112401972A CN112401972A (en) 2021-02-26
CN112401972B true CN112401972B (en) 2022-11-11

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Family Cites Families (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP2019628A4 (en) * 2006-04-25 2014-03-05 Hydrocision Inc Electroformed liquid jet surgical instrument
JP5585369B2 (en) * 2010-10-12 2014-09-10 セイコーエプソン株式会社 Fluid ejecting apparatus and medical device
US9737328B2 (en) * 2013-03-14 2017-08-22 Boston Scientific Limited Hydrodynamic eccentrically pivoting catheter
US20140277006A1 (en) * 2013-03-14 2014-09-18 Medrad, Inc. Thrombectomy catheters, systems and methods
US9433427B2 (en) * 2014-04-08 2016-09-06 Incuvate, Llc Systems and methods for management of thrombosis
US20180338770A1 (en) * 2017-05-23 2018-11-29 Asahi Intecc Co., Ltd. Assistive jet aspiration thrombectomy catheter and method of using same

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