CN114247038A - Ultrasonic internal imaging micro catheter - Google Patents
Ultrasonic internal imaging micro catheter Download PDFInfo
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- CN114247038A CN114247038A CN202111676153.4A CN202111676153A CN114247038A CN 114247038 A CN114247038 A CN 114247038A CN 202111676153 A CN202111676153 A CN 202111676153A CN 114247038 A CN114247038 A CN 114247038A
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- 238000003384 imaging method Methods 0.000 title claims abstract description 65
- 239000007788 liquid Substances 0.000 claims abstract description 20
- 239000007924 injection Substances 0.000 claims abstract description 15
- 238000002347 injection Methods 0.000 claims abstract description 15
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims description 11
- 230000009977 dual effect Effects 0.000 claims description 10
- 238000002604 ultrasonography Methods 0.000 claims description 8
- 238000012285 ultrasound imaging Methods 0.000 claims description 8
- 239000000463 material Substances 0.000 claims description 4
- 238000007789 sealing Methods 0.000 claims description 2
- 230000035515 penetration Effects 0.000 abstract description 6
- 238000012014 optical coherence tomography Methods 0.000 description 7
- 239000000523 sample Substances 0.000 description 6
- 238000005516 engineering process Methods 0.000 description 5
- 239000002504 physiological saline solution Substances 0.000 description 4
- 210000004204 blood vessel Anatomy 0.000 description 3
- 238000010586 diagram Methods 0.000 description 3
- 238000000034 method Methods 0.000 description 3
- 238000001514 detection method Methods 0.000 description 2
- 238000012986 modification Methods 0.000 description 2
- 230000004048 modification Effects 0.000 description 2
- 230000000149 penetrating effect Effects 0.000 description 2
- 239000000243 solution Substances 0.000 description 2
- 239000004952 Polyamide Substances 0.000 description 1
- 229920002614 Polyether block amide Polymers 0.000 description 1
- 239000004721 Polyphenylene oxide Substances 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000015572 biosynthetic process Effects 0.000 description 1
- 230000008859 change Effects 0.000 description 1
- 230000001684 chronic effect Effects 0.000 description 1
- 210000004351 coronary vessel Anatomy 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 238000002224 dissection Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 238000001746 injection moulding Methods 0.000 description 1
- 238000009434 installation Methods 0.000 description 1
- 230000010354 integration Effects 0.000 description 1
- 229920002647 polyamide Polymers 0.000 description 1
- 229920000570 polyether Polymers 0.000 description 1
- 238000002360 preparation method Methods 0.000 description 1
- 230000008569 process Effects 0.000 description 1
- 239000007787 solid Substances 0.000 description 1
- 238000003466 welding Methods 0.000 description 1
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- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61M—DEVICES FOR INTRODUCING MEDIA INTO, OR ONTO, THE BODY; DEVICES FOR TRANSDUCING BODY MEDIA OR FOR TAKING MEDIA FROM THE BODY; DEVICES FOR PRODUCING OR ENDING SLEEP OR STUPOR
- A61M25/00—Catheters; Hollow probes
- A61M25/0021—Catheters; Hollow probes characterised by the form of the tubing
- A61M25/0023—Catheters; Hollow probes characterised by the form of the tubing by the form of the lumen, e.g. cross-section, variable diameter
-
- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61B—DIAGNOSIS; SURGERY; IDENTIFICATION
- A61B8/00—Diagnosis using ultrasonic, sonic or infrasonic waves
- A61B8/08—Detecting organic movements or changes, e.g. tumours, cysts, swellings
- A61B8/0891—Detecting organic movements or changes, e.g. tumours, cysts, swellings for diagnosis of blood vessels
-
- 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
- A61M—DEVICES FOR INTRODUCING MEDIA INTO, OR ONTO, THE BODY; DEVICES FOR TRANSDUCING BODY MEDIA OR FOR TAKING MEDIA FROM THE BODY; DEVICES FOR PRODUCING OR ENDING SLEEP OR STUPOR
- A61M25/00—Catheters; Hollow probes
- A61M25/0021—Catheters; Hollow probes characterised by the form of the tubing
- A61M2025/0042—Microcatheters, cannula or the like having outside diameters around 1 mm or less
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- Health & Medical Sciences (AREA)
- Life Sciences & Earth Sciences (AREA)
- General Health & Medical Sciences (AREA)
- Heart & Thoracic Surgery (AREA)
- Biophysics (AREA)
- Veterinary Medicine (AREA)
- Public Health (AREA)
- Animal Behavior & Ethology (AREA)
- Engineering & Computer Science (AREA)
- Biomedical Technology (AREA)
- Medical Informatics (AREA)
- Physics & Mathematics (AREA)
- Molecular Biology (AREA)
- Surgery (AREA)
- Radiology & Medical Imaging (AREA)
- Pathology (AREA)
- Nuclear Medicine, Radiotherapy & Molecular Imaging (AREA)
- Vascular Medicine (AREA)
- Pulmonology (AREA)
- Anesthesiology (AREA)
- Hematology (AREA)
- Ultra Sonic Daignosis Equipment (AREA)
Abstract
The invention discloses an ultrasonic internal imaging micro catheter, which comprises: a double-cavity catheter, a shunt connector and a handle which are connected in sequence; the double-cavity catheter is provided with two cavity channels, the shunt connector is provided with a first channel and a second channel which are mutually independent, and the two cavity channels of the double-cavity catheter are respectively communicated through the two channels. The guide wire can be placed into the double-cavity catheter through the first channel and can penetrate out of the double-cavity catheter. An ultrasonic transducer assembly is arranged in the handle, and one end of the ultrasonic transducer assembly penetrates into the double-cavity catheter; the handle is also provided with an injection hole which is communicated with the second channel and used for injecting liquid into the double-cavity catheter, and the liquid is used as an ultrasonic imaging medium of the ultrasonic transducer assembly. The guide wire and the double-cavity catheter are coaxial, the double-cavity catheter can be made smaller while rigidity is ensured, the tube wall is thinner, the double-cavity catheter can enter a narrower, deeper and more complex working position, and compared with the prior art, the ultrasonic penetration depth of the ultrasonic transducer is deeper.
Description
Technical Field
The invention relates to the field of internal imaging catheters, in particular to an ultrasonic internal imaging micro catheter.
Background
Nowadays, devices which combine an internal imaging technology with a guide wire catheter are frequently used, so that an operator can judge the position where the guide wire penetrates out more accurately by means of the internal imaging technology, adjust a guide wire outlet better and improve the success rate of one-time puncture.
However, the existing devices combining the internal imaging technology and the guide wire catheter have the following defects: firstly, the catheter is too large in size and is not suitable for complex use occasions with narrow parts and large depths; secondly, the scanning penetration force of the internal imaging technology realized by combination is limited, and the internal imaging technology cannot be applied to the use occasions with higher requirements on the scanning penetration force.
Therefore, how to provide an internal imaging guide wire catheter with small size and strong scan penetration is a problem to be solved by the technical personnel in the field.
Disclosure of Invention
The invention aims to provide an ultrasonic internal imaging micro-catheter with stronger scanning penetrating power and smaller size.
To achieve the above object, the present invention provides an ultrasonic internal imaging microcatheter comprising: a double-cavity catheter, a shunt connector and a handle which are connected in sequence;
the shunt connector is respectively communicated with two cavities of the double-cavity catheter through a first channel and a second channel, the first channel is used for placing a guide wire into the double-cavity catheter, and the guide wire can penetrate through the outer side of the double-cavity catheter;
an ultrasonic transducer assembly is arranged in the handle, and one end of the ultrasonic transducer assembly penetrates through the second channel to the interior of the double-cavity catheter; the handle is provided with an injection hole which is communicated with the second channel and used for injecting liquid into the double-cavity catheter, and the liquid is used for matching with the ultrasonic transducer assembly to realize ultrasonic imaging.
Optionally, the dual lumen catheter comprises: the device comprises a guide wire cavity and an imaging cavity which are mutually independent, wherein the guide wire cavity is communicated with a first channel, and the imaging cavity is communicated with a second channel.
Optionally, one end of the double-lumen catheter facing away from the shunt connector is provided as a tip; the tip is provided with a water control hole which is communicated with the imaging cavity.
Optionally, an end of the guidewire lumen facing away from the first channel exits to the side of the dual lumen catheter.
Optionally, the ultrasound transducer assembly comprises: the transducer, the driving shaft and the signal connector are connected in sequence;
the transducer and the driving shaft are arranged in the imaging cavity together; the signal connector is arranged inside the handle.
Optionally, the handle is provided with a joint; the connector is communicated with the second channel and is used for being matched with the signal connector.
Optionally, a sealing ring is arranged between the injection hole and the joint to prevent liquid from seeping out.
Optionally, the double lumen catheter may remove portions of the catheter other than the double lumen structure to reduce obstruction to ultrasound imaging.
Alternatively, the double lumen catheter may be made of a material with high transparency and low loss for ultrasound imaging.
Compared with the prior art, the invention is provided with the double-cavity catheter, the shunt connector and the handle which are connected in sequence; two cavity channels are arranged in the double-cavity catheter, and the shunt connector is provided with a first channel and a second channel which are independent from each other; the shunt connector is respectively communicated with the two cavity channels of the double-cavity catheter through the first channel and the second channel; a guide wire can be placed into one cavity channel of the double-cavity catheter through the first channel and can penetrate out of the outer side of the double-cavity catheter. An ultrasonic transducer assembly is arranged inside the handle, and one end of the ultrasonic transducer assembly penetrates into the double-cavity catheter from the second channel; and an injection hole is formed in the outer part of the handle and is communicated with the second channel, an operator can inject liquid into the double-cavity catheter through the injection hole, and the liquid is used as an ultrasonic imaging medium of the ultrasonic transducer assembly to realize ultrasonic imaging in a matching mode. The guide wire is coaxial with the double-cavity catheter in the cavity of the double-cavity catheter, the double-cavity catheter can be made smaller while the rigidity is kept, the wall of the double-cavity catheter is thinner, the double-cavity catheter can enter a narrower, deeper and more complex working position, and compared with the prior art, the ultrasonic penetration depth of the ultrasonic transducer is deeper.
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 embodiments of the present invention, and for those skilled in the art, other drawings can be obtained according to the provided drawings without creative efforts.
FIG. 1 is a schematic view of an assembly of an ultrasonic internal imaging microcatheter provided in accordance with an embodiment of the present invention;
FIG. 2 is a longitudinal cross-sectional view of a shunt connector mated with a dual lumen catheter as provided by an embodiment of the present invention;
FIG. 3 is a transverse cross-sectional view of a double lumen catheter provided in accordance with an embodiment of the present invention;
FIG. 4 is a longitudinal cross-sectional view of a double lumen catheter provided in accordance with an embodiment of the present invention;
fig. 5 is a schematic structural diagram of an ultrasound transducer assembly provided in an embodiment of the present invention;
FIG. 6 is a schematic structural view of a handle according to an embodiment of the present invention;
FIG. 7 is a longitudinal cross-sectional view of a dual lumen catheter in accordance with an embodiment of the present invention in cooperation with an OCT probe;
FIG. 8 is a transverse cross-sectional view of another double lumen catheter provided in accordance with an embodiment of the present invention.
Wherein:
1-double-lumen catheter, 11-guide wire lumen, 12-imaging lumen, 13-tip, 2-shunt connector, 21-first channel, 22-second channel, 3-handle, 31-injection hole, 32-joint, 4-water control hole, 5-ultrasonic transducer assembly, 51-transducer, 52-driving shaft, 53-signal connector.
Detailed Description
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 only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.
In order that those skilled in the art will better understand the disclosure, the invention will be described in further detail with reference to the accompanying drawings and specific embodiments.
Referring to the specification, fig. 1 and fig. 2, fig. 1 is a schematic view illustrating the installation and matching of an ultrasonic internal imaging micro-catheter according to an embodiment of the present invention; FIG. 2 is a longitudinal cross-sectional view of a shunt connector mated with a dual lumen catheter as provided by an embodiment of the present invention, comprising: a double-cavity catheter 1, a shunt connector 2 and a handle 3 which are connected in sequence; two channels are arranged in the double-cavity catheter 1, and a first channel 21 and a second channel 22 are independently arranged in the shunt connector 2; the shunt connector 2 is respectively communicated with two cavities of the double-cavity catheter 1 through a first channel 21 and a second channel 22; an operator can insert a guide wire into one of the channels of the double-lumen catheter 1 through the first channel 21, and the guide wire can penetrate out of the outer side of the double-lumen catheter 1.
An ultrasonic transducer assembly 5 is arranged inside the handle 3 along the axial direction of the handle 3, and one end of the ultrasonic transducer assembly 5 penetrates from the inside of the second channel 22 to the inside of one channel of the double-cavity catheter 1; and, the outside of the above-mentioned hand grip 3 has injection holes 31, the above-mentioned injection hole 31 communicates with second channel 22, the operator can inject the liquid into the above-mentioned double-lumen conduit 1 through the injection hole 31, the above-mentioned liquid is used for realizing the ultrasonic imaging as the ultrasonic imaging medium cooperation of the above-mentioned ultrasonic transducer assembly 5.
When the above-described intra-ultrasonic imaging microcatheter is used in a forward dissection re-entry (ADR) procedure for treating Chronic Total Occlusion (CTO) of the coronary arteries: an operator can inject physiological saline into the device through the injection hole 31, the physiological saline finally enters the cavity communicated with the second channel 22 of the double-cavity catheter 1 and exhausts air bubbles in the cavity, the physiological saline can fill the whole cavity and cover the ultrasonic transducer assembly 5 in the cavity, and the physiological saline can be used as an ultrasonic imaging medium to assist the ultrasonic transducer assembly 5 in realizing ultrasonic imaging. The handle 3 is connected with an external control system, and the ultrasonic transducer assembly 5 is controlled by the handle 3 to transmit and exchange signals according to the indication of the control system. The structure realizes the integration of ultrasonic imaging and guide wire puncture, and because the guide wire keeps coaxial with the double-cavity catheter 1 in one cavity of the double-cavity catheter 1 in the pushing process, the double-cavity catheter 1 can be made smaller and the tube wall is thinner while keeping the rigidity, and can enter into narrower, deeper and more complex working positions, and compared with the prior art, the ultrasonic penetration depth of the selected ultrasonic transducer is deeper.
When the ultrasonic internal imaging micro catheter of the invention firstly opens a sub-intima channel of a CTO section, an external control system firstly gives a system imaging instruction, the ultrasonic transducer assembly 5 feeds back information and transmits a display image to a display, an operator can judge whether the ultrasonic internal imaging micro catheter passes through the CTO section or not through the information, if the ultrasonic internal imaging micro catheter passes through the CTO section, a guide wire enters from the first channel 21, when the guide wire enters a position which is not penetrated out of the inside of the double-lumen catheter 1, the system imaging instruction is used for observing the display image, whether a lumen outlet of the double-lumen catheter 1 for placing the guide wire is right opposite to a true lumen of a blood vessel is judged through a guide wire artifact, the optimal puncture position can be reached through properly adjusting the circumferential position of the double-lumen catheter 1, then, puncture is carried out, and the blood vessel intima is penetrated to enter the true lumen of the blood vessel, thereby completing an ADR operation.
Further, referring to fig. 3 of the drawings, fig. 3 is a transverse cross-sectional view of a double lumen catheter provided by an embodiment of the present invention, comprising: the above-mentioned double lumen catheter 1 comprises: a guide wire cavity 11 for communicating with the first channel 21 and an imaging cavity 12 for communicating with the second channel 22, wherein the guide wire cavity 11 and the imaging cavity 12 are independent from each other and do not communicate with each other, thereby preventing mutual interference.
Further, referring to fig. 4 of the drawings, fig. 4 is a longitudinal sectional view of a double lumen catheter provided by an embodiment of the present invention, comprising: the end of the double lumen catheter 1 facing away from the shunt connector 2 is provided with a tip 13, and the direction of the tip 13 is generally the pushing direction of the ultrasound internal imaging microcatheter. The pointed end 13 is provided with a water control hole 4, the water control hole 4 is communicated with the imaging cavity 12, and the imaging cavity 12 realizes the evacuation of air bubbles inside the imaging cavity through the water control hole 4. Above-mentioned accuse water hole 4 can communicate the inside liquid and the bubble of the inside 12 imaging cavities of 1 outside of two-chamber pipe and discharge, because the accuse water hole 4 sets up very tiny, liquid seepage rate is very low, and the operation implementation of pouring into liquid is at the initial preparation stage of the miniature pipe of formation of image in the supersound, has guaranteed that the inside hydraulic pressure of the imaging cavity 12 of pouring into liquid is greater than the outside hydraulic pressure of operating position, can prevent that the outside liquid of two-chamber pipe 1 from flowing into in the imaging cavity 12, thereby realize the inside lock water of imaging cavity 12.
The evacuation of the internal bubbles of the imaging cavity 12 is not limited to the form of arranging the water control hole 4 on the double-cavity catheter 1, and any structural design capable of achieving the same liquid drainage effect can be replaced, and the imaging cavity is not unfolded.
Furthermore, one end of the guide wire cavity 11 is communicated with the first channel 21, and the other end of the guide wire cavity penetrates out of the side surface of the double-cavity catheter 1 to realize guide wire puncture, and the penetrated guide wire and the double-cavity catheter 1 form a certain angle, wherein the angle range is 0-90 degrees, and the guide wire cavity is used for realizing lateral puncture. The position of the guide wire cavity 11 for the guide wire to penetrate out can be adjusted according to actual conditions, and the guide wire cavity is not unfolded.
Further, referring to fig. 5 in the specification, fig. 5 is a schematic structural diagram of an ultrasound transducer assembly provided in an embodiment of the present invention, including: the ultrasonic transducer assembly 5 includes: a transducer 51, a driving shaft 52 and a signal connector 53 which are connected in sequence; the transducer 51 and the driving shaft 52 extend into the imaging cavity 12 by penetrating through the second passage 22, the driving shaft 52 is used for driving the transducer 51 to move and rotate along the length direction of the imaging cavity 12, and the transducer 51 can change the detection range of ultrasonic imaging along with the position changed by the movement. The transducer 51 is used for transmitting and exchanging real-time signals, and the signal connector 53 is firmly connected inside the handle 3.
Further, referring to fig. 6 of the specification, fig. 6 is a schematic structural diagram of a handle according to an embodiment of the present invention, including: the handle 3 is provided with a joint 32, the joint 32 is simultaneously communicated with the second channel 22 and an external control system, the joint 32 is sleeved outside the signal connector 53, the signal connector 53 is matched with the joint 32 to realize connection with the control system, and a control instruction transmitted by the control system is transmitted to the transducer 51 and the driving shaft 52.
Further, the injection hole 31 and the joint 32 are both communicated with the second passage 22, and a seal ring is provided between the injection hole 31 and the joint 32 for preventing liquid from protruding from the joint 32 to the outside.
Referring to the specification, fig. 7 is a longitudinal sectional view of a dual lumen catheter and an OCT probe provided by an embodiment of the present invention, including: in another embodiment, the ultrasound transducer assembly 5 can be replaced by an Optical Coherence Tomography (OCT) probe, because the OCT probe 54 does not need to perform internal imaging by injecting a liquid medium, so the dual-lumen catheter 1 can be removed from the water control hole 4, unlike the previous embodiment, in which the guidewire lumen 11 can extend to the tip 13 of the dual-lumen catheter 1 to form a through hole; the OCT probe 54 is directed through the wall of the double lumen catheter 1 for intra-imaging scanning detection.
Further, referring to fig. 8 of the drawings, fig. 8 is a cross-sectional view of another double lumen catheter provided by an embodiment of the present invention, comprising: the double-lumen catheter 1 can be manufactured into a gourd-like shape by removing the structure except the double lumen, i.e. the guide wire lumen 12 and the imaging lumen 13 are integrally formed by injection molding or welding, and the structure has the advantages of removing the redundant solid part of the catheter, reducing the obstruction to the ultrasound and infrared light and being beneficial to better imaging of the ultrasound transducer 51 (or the OCT probe 54).
Further, the double-lumen catheter 1 can be made of a material with high transparency and low ultrasonic loss, such as: PEBAX (polyether block polyamide), PE materials, and the like.
It is noted that, in this specification, relational terms such as first and second, and the like are used solely to distinguish one entity from another entity without necessarily requiring or implying any actual such relationship or order between such entities.
The ultrasonic internal imaging microcatheter provided by the present invention is described in detail above. The principles and embodiments of the present invention are explained herein using specific examples, which are presented only to assist in understanding the method and its core concepts. It should be noted that, for those skilled in the art, it is possible to make various improvements and modifications to the present invention without departing from the principle of the present invention, and those improvements and modifications also fall within the scope of the claims of the present invention.
Claims (9)
1. An ultrasonic internal imaging microcatheter, comprising: a double-cavity catheter, a shunt connector and a handle which are connected in sequence;
the shunt connector is respectively communicated with two cavities of the double-cavity catheter through a first channel and a second channel, the first channel is used for placing a guide wire into the double-cavity catheter, and the guide wire can penetrate through the outer side of the double-cavity catheter;
an ultrasonic transducer assembly is arranged inside the handle, and one end of the ultrasonic transducer assembly penetrates through the second channel to the inside of the double-cavity catheter; the handle is provided with an injection hole, the injection hole is communicated with the second channel and is used for injecting liquid into the double-cavity catheter, and the liquid is used for matching the ultrasonic transducer assembly to realize ultrasonic imaging.
2. The ultrasound imaging dual lumen catheter of claim 1, wherein the dual lumen catheter comprises: the device comprises a guide wire cavity and an imaging cavity which are mutually independent, wherein the guide wire cavity is communicated with a first channel, and the imaging cavity is communicated with a second channel.
3. The ultrasonically inner imaging microcatheter of claim 2, wherein an end of the dual lumen catheter facing away from the shunt connector is configured as a tip; the pointed end is provided with a water control hole which is communicated with the imaging cavity.
4. The ultrasonic internal imaging microcatheter of claim 3, wherein an end of the guidewire lumen facing away from the first channel exits to a side of the dual lumen catheter.
5. The intra-ultrasound imaging microcatheter of claim 4, wherein the ultrasound transducer assembly comprises: the transducer, the driving shaft and the signal connector are connected in sequence;
the transducer is disposed inside the imaging chamber in conjunction with the drive shaft; the signal connector is arranged inside the handle.
6. The ultrasonic intra-imaging microcatheter of claim 5, wherein the handle is provided with a joint; the connector is communicated with the second channel and is used for being matched with the signal connector.
7. The ultrasonic imaging dual-lumen catheter of claim 6, wherein a sealing ring is disposed between the injection hole and the adapter to prevent the liquid from seeping out.
8. The ultrasound imaging double lumen catheter of claim 7, wherein the double lumen catheter is removable from the outside of the double lumen structure to reduce obstruction to the ultrasound imaging.
9. The ultrasound imaging double lumen catheter of any of claims 1-8, wherein the double lumen catheter is made of a material selected for high transparency and low loss for ultrasound imaging.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202111676153.4A CN114247038A (en) | 2021-12-31 | 2021-12-31 | Ultrasonic internal imaging micro catheter |
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| Application Number | Priority Date | Filing Date | Title |
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| CN202111676153.4A CN114247038A (en) | 2021-12-31 | 2021-12-31 | Ultrasonic internal imaging micro catheter |
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| CN114247038A true CN114247038A (en) | 2022-03-29 |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN115920213A (en) * | 2022-12-19 | 2023-04-07 | 深圳心寰科技有限公司 | Can exhaust intervene type pipe device |
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| CN109847119A (en) * | 2019-02-26 | 2019-06-07 | 胡涛 | Microtubular and microtubular component |
| CN113143315A (en) * | 2021-02-09 | 2021-07-23 | 深圳市赛禾医疗技术有限公司 | Intravascular ultrasonic imaging catheter and system with forward-looking capability |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN115920213A (en) * | 2022-12-19 | 2023-04-07 | 深圳心寰科技有限公司 | Can exhaust intervene type pipe device |
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