CN111973229A - Intravascular ultrasound catheter - Google Patents
Intravascular ultrasound catheter Download PDFInfo
- Publication number
- CN111973229A CN111973229A CN202010887280.8A CN202010887280A CN111973229A CN 111973229 A CN111973229 A CN 111973229A CN 202010887280 A CN202010887280 A CN 202010887280A CN 111973229 A CN111973229 A CN 111973229A
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- Prior art keywords
- assembly
- rotary scanning
- protective sheath
- arc
- intravascular ultrasound
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- 238000002608 intravascular ultrasound Methods 0.000 title claims description 21
- 230000001681 protective effect Effects 0.000 claims abstract description 24
- 210000004204 blood vessel Anatomy 0.000 claims abstract description 8
- 239000002775 capsule Substances 0.000 claims description 11
- 238000003780 insertion Methods 0.000 claims description 2
- 230000037431 insertion Effects 0.000 claims description 2
- 239000007924 injection Substances 0.000 description 3
- 238000002347 injection Methods 0.000 description 3
- 238000000034 method Methods 0.000 description 3
- 230000005540 biological transmission Effects 0.000 description 2
- 230000008859 change Effects 0.000 description 2
- 238000003384 imaging method Methods 0.000 description 2
- 239000007788 liquid Substances 0.000 description 2
- 230000008569 process Effects 0.000 description 2
- 230000009471 action Effects 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000001419 dependent effect Effects 0.000 description 1
- 238000001514 detection method Methods 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- 238000005259 measurement Methods 0.000 description 1
- 230000007246 mechanism Effects 0.000 description 1
- 239000002504 physiological saline solution Substances 0.000 description 1
- 231100000216 vascular lesion Toxicity 0.000 description 1
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 1
Images
Classifications
-
- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61B—DIAGNOSIS; SURGERY; IDENTIFICATION
- A61B8/00—Diagnosis using ultrasonic, sonic or infrasonic waves
- A61B8/12—Diagnosis using ultrasonic, sonic or infrasonic waves in body cavities or body tracts, e.g. by using catheters
-
- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61B—DIAGNOSIS; SURGERY; IDENTIFICATION
- A61B8/00—Diagnosis using ultrasonic, sonic or infrasonic waves
- A61B8/44—Constructional features of the ultrasonic, sonic or infrasonic diagnostic device
- A61B8/4444—Constructional features of the ultrasonic, sonic or infrasonic diagnostic device related to the probe
- A61B8/445—Details of catheter construction
-
- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61B—DIAGNOSIS; SURGERY; IDENTIFICATION
- A61B8/00—Diagnosis using ultrasonic, sonic or infrasonic waves
- A61B8/46—Ultrasonic, sonic or infrasonic diagnostic devices with special arrangements for interfacing with the operator or the patient
- A61B8/467—Ultrasonic, sonic or infrasonic diagnostic devices with special arrangements for interfacing with the operator or the patient characterised by special input means
- A61B8/469—Ultrasonic, sonic or infrasonic diagnostic devices with special arrangements for interfacing with the operator or the patient characterised by special input means for selection of a region of interest
-
- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61B—DIAGNOSIS; SURGERY; IDENTIFICATION
- A61B8/00—Diagnosis using ultrasonic, sonic or infrasonic waves
- A61B8/54—Control of the diagnostic device
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- Life Sciences & Earth Sciences (AREA)
- Health & Medical Sciences (AREA)
- Biomedical Technology (AREA)
- Biophysics (AREA)
- Nuclear Medicine, Radiotherapy & Molecular Imaging (AREA)
- Pathology (AREA)
- Radiology & Medical Imaging (AREA)
- Engineering & Computer Science (AREA)
- Physics & Mathematics (AREA)
- Heart & Thoracic Surgery (AREA)
- Medical Informatics (AREA)
- Molecular Biology (AREA)
- Surgery (AREA)
- Animal Behavior & Ethology (AREA)
- General Health & Medical Sciences (AREA)
- Public Health (AREA)
- Veterinary Medicine (AREA)
- Ultra Sonic Daignosis Equipment (AREA)
Abstract
In order to solve the problem that the micro ultrasonic transducer cannot finely scan a specific area due to the fact that the moving distance of the micro ultrasonic transducer is not controllable in the prior art, the invention provides an intravascular ultrasonic catheter which comprises a rotary scanning assembly, a protective sheath and a reducing assembly; the rotary scanning component is used for sending ultrasonic waves and receiving the ultrasonic waves so as to carry out rotary scanning on tissues; the protective sheath is arranged on the outer side of the rotary scanning assembly and used for intervening blood vessels; the reducing assembly is arranged between the rotary scanning assembly and the protective sheath. The reducing assembly can radially reduce the protective sheath 2, so that the rotary scanning assembly advances along the reducing assembly at equal intervals in unit time. The invention solves the problem that the miniature ultrasonic transducer can not finely scan a specific area due to the uncontrollable moving distance of the miniature ultrasonic transducer in the prior art, and has the advantages of simple structure and high scanning precision.
Description
Technical Field
The present disclosure relates to the field of intravascular ultrasound catheters, and in particular, to an intravascular ultrasound catheter.
Background
IVUS systems are collectively referred to as intravascular ultrasound imaging systems. Through a radial or femoral puncture, the IVUS catheter is advanced to the vascular lesion. During the retraction process of the tube core of the IVUS catheter, the ultrasonic imaging is carried out on the structural information of the lumen and the wall section of the blood vessel through the miniature ultrasonic transducer at the front end of the tube core. Before the IVUS catheter enters the human body, physiological saline needs to be injected into the catheter from the water injection hole by using an injector to discharge air bubbles in the IVUS catheter, so that the miniature ultrasonic transducer is completely positioned in the environment coated by liquid, and the measurement accuracy is improved.
In the ultrasonic scanning process of the existing IVUS system, because the advance and retreat of the miniature ultrasonic transducer can not be accurately controlled, when meeting the region which is relatively interested by a doctor, the experience method is usually adopted, and the miniature ultrasonic transducer is moved to the region which is interested by the IVUS injection device and then scanned.
Due to the fact that the force application stroke of the IVUS injection device is too long, the moving distance of the miniature ultrasonic transducer is not controllable, and fine scanning on a specific area cannot be conducted.
Disclosure of Invention
In order to solve the problem that the micro ultrasonic transducer cannot finely scan a specific area due to the fact that the moving distance of the micro ultrasonic transducer is not controllable in the prior art, the invention provides an intravascular ultrasonic catheter which can effectively solve the technical problem.
The technical scheme adopted by the invention for solving the technical problems is as follows: an intravascular ultrasound catheter comprising:
the rotary scanning component is used for sending ultrasonic waves and receiving the ultrasonic waves so as to carry out rotary scanning on tissues;
a protective sheath arranged outside the rotary scanning assembly for intervening a blood vessel;
the reducing assembly is arranged between the rotary scanning assembly and the protective sheath;
the reducing assembly can radially reduce the protective sheath, so that the rotary scanning assembly advances along the reducing assembly at equal intervals in unit time.
The reducing subassembly includes:
the bag body is hermetically arranged on the inner side wall of the protective sheath;
the arc-shaped movable plate is arranged on the inner side of the bag body and is matched with the rotary scanning assembly;
and the adding unit is communicated with the balloon through a pipeline and is used for expanding the balloon.
The arc fly leaf includes:
the more than two arc-shaped plates are protruded towards the inner side of the capsule body through the expansion of the capsule body;
internal threads are arranged on the two arc-shaped plates, and the expansion and combination of the capsule body form complete threads;
and the outer side of the rotary scanning assembly is provided with an external thread corresponding to the internal thread on the arc-shaped plate.
The rotary scanning assembly, comprising:
a micro motor;
the driving block is arranged at the output end of the micro motor;
the high-frequency ultrasonic transducer is arranged on one side of the driving block, which is far away from the micro motor;
and a structure for transmitting with the reducing assembly is arranged on the outer side of the driving block.
The protective sheath comprises:
a soft portion for insertion into a blood vessel;
a high-frequency sound-transmitting duct provided on one side of the soft portion and having a closed end;
the reducing assembly is arranged in the high-frequency sound-transmitting conduit.
The invention has the beneficial effects that: according to the invention, the reducing component is arranged between the rotary scanning component and the protective sheath, the protective sheath is radially reduced, and the rotary scanning component equidistantly advances along the reducing component in unit time, so that the interested region can be finely scanned back and forth, and an accurate detection result is obtained. The invention solves the problem that the miniature ultrasonic transducer can not finely scan a specific area due to the uncontrollable moving distance of the miniature ultrasonic transducer in the prior art, and has the advantages of simple structure and high scanning precision.
Drawings
FIG. 1 is a schematic structural diagram of the present invention.
Fig. 2 is a schematic enlarged view of the bladder shown in fig. 1.
Fig. 3 is a schematic structural view of the arc-shaped movable plate in the state of fig. 1.
Fig. 4 is a schematic structural view of the arc-shaped movable plate in the state of fig. 2.
An arc plate provided with internal threads is arranged at A in FIG. 3; and the position B is an arc-shaped plate without internal threads.
Detailed Description
The invention will be further described with reference to the accompanying drawings.
Specific example I: 1-2, an intravascular ultrasound catheter comprising: the device comprises a rotary scanning assembly 1, a protective sheath 2 and a reducing assembly 3; the rotary scanning component 1 is used for sending out ultrasonic waves and receiving the ultrasonic waves, so that tissues are subjected to rotary scanning; the protective sheath 2 is arranged outside the rotary scanning assembly 1 and is used for intervening blood vessels; the reducing assembly 3 is arranged between the rotary scanning assembly 1 and the protective sheath 2. The reducing assembly 3 can radially reduce the protective sheath 2, so that the rotary scanning assembly 1 can advance along the reducing assembly 3 at equal intervals in unit time.
The equidistant advancing means that the moving distance of the rotating scanning component 1 in the protective sheath 2 is constant under the condition that the rotating speed is not changed in unit time.
As shown in fig. 3 to 4, in order to prevent the diameter-changing assembly 3 from affecting the forward or backward movement of the rotary scanning assembly 1 without changing the diameter, the diameter-changing assembly 3 includes: a bag body 301 and an arc-shaped movable plate 302;
wherein, the balloon 301 is closely arranged on the inner side wall of the protective sheath 2; an arc-shaped movable plate 302 is arranged on the inner side of the capsule 301 and is matched with the rotary scanning assembly 1;
an adding unit 303 communicating with said balloon 301 through a conduit for inflating said balloon 301.
Under the condition that the balloon 301 is inflated, the arc-shaped movable plate 302 is gradually close to the axis of the balloon 301, and finally, the degree of diameter change is determined by the action of the arc-shaped movable plate 302 or the maximum deformation of the balloon 301.
Specifically, the arc-shaped movable plate 302 includes: an arcuate plate 3021;
wherein, more than two arc panels 3021 are protruded towards the inner side of the capsule 301 through the expansion of the capsule 301, and finally, under the condition that the capsule 301 is gradually enlarged, the side edges of the arc panels 3021 form a mutually dependent positioning relationship to form a complete cylinder shape. Moreover, internal threads are arranged on the two or more arc-shaped plates 3021, and the expansion of the capsule 301 and the combination form complete threads; in order to make the rotary scanning assembly 1 move equidistantly in the arc-shaped movable plate 302, the outer side of the rotary scanning assembly 1 is provided with an external thread corresponding to the internal thread on the arc-shaped plate 3021.
Further, the rotary scanning assembly 1 includes: a micro motor 101, a driving block 102 and a high frequency ultrasonic transducer 103; wherein, the driving block 102 is arranged at the output end of the micro motor 101; a high-frequency ultrasonic transducer 103 is arranged on one side of the driving block 102 far away from the micro motor 101; a structure for transmitting with the reducing assembly 3 is arranged on the outer side of the driving block 102; the transmission mechanism of the invention can be a thread structure.
Further, for convenience of wiring, as in 1-2, a through hole for passing through the micro motor 101 and the high-frequency ultrasonic transducer 103 is formed in the driving block 102.
In order to facilitate the operation of the high frequency ultrasonic transducer 103, the protective sheath 2 comprises: a soft portion 201 and a high-frequency sound-transmitting tube 202; wherein, the soft part 201 is inserted into the blood vessel and can be bent and deformed; a high-frequency sound-transmitting tube 202 having a closed end and disposed on one side of the soft portion 201, for transmitting ultrasonic waves; the reducing assembly 3 is arranged in the high-frequency sound-transmitting conduit 202.
In a specific implementation, since the arc-shaped plate 3021 is provided with an internal thread, in case the balloon 301 is not enlarged, as shown in fig. 1, the travel of the rotary scanning assembly 1 on the arc-shaped plate 3021 may be affected by the thread, which may not facilitate the travel of the rotary scanning assembly 1.
Preferably, a layout as in fig. 3 is used. Four arc panels 3021 are provided in total, and the arc panels 3021 located below and above are provided with smooth inner side walls, and the arc panels 3021 on the left and right sides are provided with internal threads. Similarly, the internal threads of the left and right arc-shaped plates 3021 form a complete thread transmission structure, which facilitates the internal movement of the rotary scanning assembly 1.
When the rotating scanning assembly 1 moves forwards in the protective sheath 2, when meeting an interested area or a position needing to be observed carefully, the balloon 301 in the reducing assembly 3 is expanded, so that the outer thread of the rotating scanning assembly 1 is matched with the inner thread of the arc-shaped plate 3021, and equidistant scanning in unit time is completed.
The means by which the balloon 301 described herein is expanded may be, and preferably is not, inflated or liquid-filled; the material of the arc-shaped plate 3021 may be medical PVC, which does not affect the use of the high-frequency ultrasonic transducer 103.
It is to be understood that: the directional descriptions described herein are subject to fig. 1.
The above description is only an embodiment of the present invention, but the scope of the present invention is not limited thereto, and any person skilled in the art can easily change or replace the present invention within the technical scope of the present invention. Therefore, the protection scope of the present invention is subject to the protection scope of the claims.
Claims (6)
1. An intravascular ultrasound catheter, comprising:
the rotary scanning component is used for sending ultrasonic waves and receiving the ultrasonic waves so as to carry out rotary scanning on tissues;
a protective sheath arranged outside the rotary scanning assembly for intervening a blood vessel;
the reducing assembly is arranged between the rotary scanning assembly and the protective sheath;
the reducing assembly can radially reduce the protective sheath, so that the rotary scanning assembly advances along the reducing assembly at equal intervals in unit time.
2. The intravascular ultrasound catheter of claim 1, wherein the variable diameter assembly comprises:
the bag body is hermetically arranged on the inner side wall of the protective sheath;
the arc-shaped movable plate is arranged on the inner side of the bag body and is matched with the rotary scanning assembly;
and the adding unit is communicated with the balloon through a pipeline and is used for expanding the balloon.
3. The intravascular ultrasound catheter of claim 2, wherein the arcuate moving plate comprises:
the more than two arc-shaped plates are protruded towards the inner side of the capsule body through the expansion of the capsule body;
internal threads are arranged on the two arc-shaped plates, and the expansion and combination of the capsule body form complete threads;
and the outer side of the rotary scanning assembly is provided with an external thread corresponding to the internal thread on the arc-shaped plate.
4. The intravascular ultrasound catheter of claim 1, wherein the rotational scanning assembly comprises:
a micro motor;
the driving block is arranged at the output end of the micro motor;
the high-frequency ultrasonic transducer is arranged on one side of the driving block, which is far away from the micro motor;
and a structure for transmitting with the reducing assembly is arranged on the outer side of the driving block.
5. An intravascular ultrasound catheter according to claim 4, wherein:
the driving block is provided with a through hole for passing through the micro motor and the high-frequency ultrasonic transducer wire.
6. The intravascular ultrasound catheter of claim 1, wherein the protective sheath comprises:
a soft portion for insertion into a blood vessel;
a high-frequency sound-transmitting duct provided on one side of the soft portion and having a closed end;
the reducing assembly is arranged in the high-frequency sound-transmitting conduit.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010887280.8A CN111973229A (en) | 2020-08-28 | 2020-08-28 | Intravascular ultrasound catheter |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010887280.8A CN111973229A (en) | 2020-08-28 | 2020-08-28 | Intravascular ultrasound catheter |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN111973229A true CN111973229A (en) | 2020-11-24 |
Family
ID=73440265
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202010887280.8A Pending CN111973229A (en) | 2020-08-28 | 2020-08-28 | Intravascular ultrasound catheter |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN111973229A (en) |
Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH07184902A (en) * | 1993-12-28 | 1995-07-25 | Olympus Optical Co Ltd | Intracelom ultrasonic probe |
| CN103327878A (en) * | 2011-01-25 | 2013-09-25 | 英伟森医疗公司 | Systems and methods for maintaining a narrow body lumen |
| CN107411773A (en) * | 2017-05-25 | 2017-12-01 | 苏州乐步生物科技有限公司 | A kind of novel Doppler probe |
-
2020
- 2020-08-28 CN CN202010887280.8A patent/CN111973229A/en active Pending
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH07184902A (en) * | 1993-12-28 | 1995-07-25 | Olympus Optical Co Ltd | Intracelom ultrasonic probe |
| CN103327878A (en) * | 2011-01-25 | 2013-09-25 | 英伟森医疗公司 | Systems and methods for maintaining a narrow body lumen |
| CN107411773A (en) * | 2017-05-25 | 2017-12-01 | 苏州乐步生物科技有限公司 | A kind of novel Doppler probe |
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