CN209018784U - Intravascular ultrasound catheter and system - Google Patents
Intravascular ultrasound catheter and system Download PDFInfo
- Publication number
- CN209018784U CN209018784U CN201820935510.1U CN201820935510U CN209018784U CN 209018784 U CN209018784 U CN 209018784U CN 201820935510 U CN201820935510 U CN 201820935510U CN 209018784 U CN209018784 U CN 209018784U
- Authority
- CN
- China
- Prior art keywords
- drive shaft
- ultrasonic transducer
- flexible drive
- detecting means
- intravascular ultrasound
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Active
Links
Abstract
Present disclose provides a kind of intravascular ultrasound catheter and systems, comprising: sheath is in elongated tubular product, has proximal lateral and distal side；Flexible drive shaft can slide in sheath, and flexible drive shaft has internal cavity；Detecting means, are arranged in the distal side of sheath, and with flexible driving axis connection, detecting means have the ultrasonic transducer for detecting angio-architecture；And connecting wire, it is arranged along internal cavity and connect with ultrasonic transducer, and the detection signal obtained by ultrasonic transducer is transported in vitro, wherein, in flexible drive shaft, it is additionally provided with the barrier structure for being arranged in and detecting means and internal cavity being isolated between detecting means and internal cavity.In the disclosure, it can be ensured that the concentricity of ultrasonic transducer and connecting wire, and the internal cavity for the infiltration flexible drive shaft for inhibiting process materials such as bonding agent in assembling process etc. and destroy its verticity.
Description
Technical field
This disclosure relates to insertion type field of medical technology, in particular to a kind of intravascular ultrasound catheter and intravascular ultrasound system
System.
Background technique
Intravascular ultrasound (Intravascular Ultrasound, IVUS) system is by minimally invasive insertion type ultrasonic imaging
Conduit come carry out cardiovascular disease diagnosis and interventional therapy guidance important clinical means.IVUS by non-invasive ultrasonic technique with
Interposing catheter technology combines, and it is for example narrow to push to blood vessel target area for conduit trans-radial or femoral artery puncture when use
Place, then the flexible drive shaft in conduit during withdrawing by be arranged in the ultrasonic transducer of its front end to vessel lumen and
Tube wall is imaged.
In the progradation of above-mentioned conduit in the blood vessels, due to blood vessel curved shape and drive flexible drive shaft to occur
Different degrees of bending, conducting wire inside flexible drive shaft also can respective curved, and easily with the internal cavity of flexible drive shaft
Inner wall contact has influenced the rotary motion of flexible drive shaft, has eventually affected ultrasonic transducer excessively to increase friction
Rotation imaging precision.It is general it is contemplated that a kind of lesser thin wire in cross section is provided, to subtract in order to cope with above situation
The friction of the inner wall of the internal cavity of small conducting wire and flexible drive shaft.But, lesser conducting wire easily with the inner wall of flexible drive shaft
Between form gap.
In this case, usually there are problems that two: one side, the in the blood vessels peace of the ultrasonic transducer of ultrasound catheter
It fills in manufacturing process, usually needs when ultrasonic transducer is encapsulated in detecting means or encapsulating housing using bonding agent
(packaging plastic), and since there are such a gaps between the inner wall and connecting wire of flexible drive shaft, in ultrasonic transducer
When coating bonding agent, bonding agent is easy to penetrate into the region of flexible drive shaft via gap, so as to cause ultrasonic transducer part
Bonding agent is insufficient and flexible drive shaft reduced performance due to the bonding agent of infiltration.On the other hand, due to being connected before conducting wire
Ultrasonic transducer, in the blood vessels in the installation manufacturing process of the ultrasonic transducer of ultrasound catheter, if conducting wire is in flexibility
The inside of transmission shaft occurs the case where shaking along the sagittal plane of flexible drive shaft because of the presence in gap, then can make conducting wire
It can not be in same axis with ultrasonic transducer, and then but also the ultrasonic transducer and flexible drive shaft finally installed may
It is not coaxial, finally affect the picture quality of ultrasonic transducer rotation imaging.
Summary of the invention
The disclosure is dedicated to solving above-mentioned problems of the prior art, is assembling its purpose is to provide a kind of
Process materials such as bonding agent etc. is inhibited to penetrate into the internal cavity of flexible drive shaft and destroy the intravascular of its verticity in journey
Ultrasound catheter, system and its assembly method.
For this purpose, the one side of the disclosure provides a kind of intravascular ultrasound catheter, comprising: sheath is in elongated tubular product, tool
There are distal side and proximal lateral；Flexible drive shaft can slide in the sheath, and the flexible drive shaft has inner chamber
Body；Detecting means, are arranged in the distal side of the sheath, and with the flexible driving axis connection, the detecting means, which have, to be used
In the ultrasonic transducer of detection angio-architecture；And connecting wire, it arranges along the internal cavity and is changed with the ultrasound
Energy device connection, and the detection signal obtained by the ultrasonic transducer is transported in vitro, wherein in the flexible driving
Axis is additionally provided with and is arranged between the detecting means and the internal cavity so that the detecting means and the internal cavity are isolated
Barrier structure.
In the disclosure, it in flexible drive shaft, is additionally provided with and is arranged between detecting means and internal cavity so that sensing is isolated
The barrier structure in portion and internal cavity thus, it is possible to ensure the concentricity of ultrasonic transducer and connecting wire, and was assembling
Process materials such as bonding agent etc. is inhibited to penetrate into the internal cavity of flexible drive shaft and destroy its verticity in journey, to improve
The image quality of ultrasonic transducer.
In the intravascular ultrasound catheter involved in the disclosure, the barrier structure can close the connecting wire and institute
State the gap between the internal cavity of flexible drive shaft.Thereby, it is possible to detecting means and flexible drive shaft is effectively isolated
Internal cavity.
In addition, the barrier structure can be internal diameter and the company in the intravascular ultrasound catheter involved in the disclosure
Connect the becket of the matched annular shape of conducting wire.Detecting means and flexible drive shaft can be more firmly arranged in barrier structure as a result,
Internal cavity between.
In addition, the ultrasonic transducer is fixed on by bonding agent in the intravascular ultrasound catheter involved in the disclosure
The detecting means.Thereby, it is possible to ultrasonic transducer is stably fixed to detecting means.
In addition, the detecting means include the ultrasonic transduction in the intravascular ultrasound catheter involved in the disclosure
The area of section along width direction of device is greater than the area of section along width direction of the flexible drive shaft.Exist as a result,
In assembling process, a part insertion detecting means of the distal portion of flexible drive shaft can easily be made to be welded and/or be bonded
It is fixed.
In addition, the flexible drive shaft has to be wound along periphery in the intravascular ultrasound catheter involved in the disclosure
Stainless steel conducting wire.Thereby, it is possible to guarantee that there is flexible drive shaft enough rigidity to have good flexibility again.
In addition, the ultrasonic transducer is led via the stainless steel in the intravascular ultrasound catheter involved in the disclosure
Line ground connection.Thereby, it is possible to effectively inhibit interference, guarantee that the detection signal stabilization of acquisition is reliable.
In addition, in the intravascular ultrasound catheter involved in the disclosure, the barrier structure is around the connecting wire
Setting.Thereby, it is possible to so that barrier structure and connecting wire is formed good covering, it is ensured that the inside of detecting means and flexible drive shaft
Isolation between cavity.
In addition, further including being led slideably received within individually medical in the intravascular ultrasound catheter involved in the disclosure
The guidewire lumen of silk.Thereby, it is possible to intravascular ultrasound catheter is directed to blood vessel target area by medical guiding wire.
The second aspect of the disclosure provides a kind of intravascular ultrasound system, comprising: foregoing intravascular ultrasound is led
Pipe；Device is withdrawn, is used for certain speed from vascular lesion to recalling the flexible drive shaft in vitro；And ultrasound is main
Machine, is used to receive and is obtained by the ultrasonic transducer and be transported to the external detection signal via the proximal lateral.
In the intravascular ultrasound system involved in the disclosure, it can be ensured that ultrasonic transducer is coaxial with connecting wire
Degree, and inhibit process materials such as bonding agent etc. to penetrate into the internal cavity of flexible drive shaft and destroy its rotation in assembling process
Turn performance, to improve the image quality of ultrasonic transducer.
The third aspect of the disclosure provides a kind of assembly method of intravascular ultrasound catheter, comprising: by connecting wire
End close to the distal side of sheath is electrically connected with ultrasonic transducer；Barrier structure is sheathed on the connecting wire；Described
Place flexible drive shaft in sheath, and by the connecting wire from the internal cavity of the flexible drive shaft close to the distal side
End penetrate；So that the barrier structure is advanced into the end of the internal cavity along the connecting wire, keeps institute
State barrier structure be between the detecting means and the internal cavity of the flexible drive shaft, be isolated the detecting means with it is described
Internal cavity.
In the assembly method of the intravascular ultrasound catheter involved in the disclosure, in flexible drive shaft, it is additionally provided with arrangement
The barrier structure of detecting means and internal cavity is isolated between detecting means and internal cavity, thus, it is possible to ensure ultrasonic transducer
With the concentricity of connecting wire, and process materials such as bonding agent etc. is inhibited to penetrate into flexible drive shaft in assembling process
Portion's cavity and destroy its verticity, to improve the image quality of ultrasonic transducer.
According to the disclosure, it is capable of providing one kind and process materials such as bonding agent etc. is inhibited to penetrate into flexible pass in assembling process
The internal cavity of moving axis and destroy its verticity to improve ultrasonic transducer image quality intravascular ultrasound catheter,
System and its assembly method.
Detailed description of the invention
Embodiment of the disclosure will be explained in further detail solely by reference to the example of attached drawing now, in which:
Fig. 1 is the partial structural diagram of intravascular ultrasound catheter involved in the disclosure.
Fig. 2 is the partial structural diagram of flexible drive shaft involved in the disclosure.
Fig. 3 is the structural schematic diagram of detecting means involved in the disclosure.
Fig. 4 be barrier structure involved in the disclosure be in connecting wire distal side when cross-sectional view.
Fig. 5 is the schematic diagram of the intravascular ultrasound catheter involved in the disclosure with guidewire lumen.
Fig. 6 is the schematic diagram of intravascular ultrasound system involved by the disclosure.
Fig. 7 is the assembly method flow diagram of intravascular ultrasound catheter involved in the disclosure.
Specific embodiment
Hereinafter, explaining the preferred embodiment of the disclosure in detail with reference to attached drawing.In the following description, for identical
Component assign identical symbol, the repetitive description thereof will be omitted.Scheme in addition, attached drawing is only schematical, the mutual ruler of component
Very little shape of ratio or component etc. can be with actual difference.
For each embodiment/example described in the disclosure, in the range or reality of the theme without departing substantially from the disclosure
Under the premise of matter, it can be easy one of embodiment/exemplary feature, component and/or step and any other embodiment party
Feature described in formula/example, component and/or step combination.However, for simplicity, in the disclosure not individually
These possible multiple combinations are described.
After the description for reading the disclosure, the embodiment/exemplary deformation is for those of ordinary skill in the art
It will become obvious.It is expected that those of ordinary skill can suitably use such deformation, and the disclosure can with this
In the different mode of the mode that specifically describes implement.Therefore, many embodiments of the disclosure include the permitted institute of applicable law
The all modifications and equivalent of theme described in attached claim.In addition, unless indicated otherwise herein or obviously and context
Contradiction, otherwise any combination of said elements in its all possible deformation is all contained in the disclosure.
This disclosure relates to a kind of intravascular ultrasound catheter 1 (being referred to as " ultrasound catheter 1 " sometimes below).Make some
With in scene, intravascular ultrasound catheter 1 can be used for detecting the lumen of blood vessel and the situation of inner wall, to obtain blood vessel target area
Health status, to be conducive to instruct doctor etc. to make the intervention operation for whether carrying out for example being implanted into angiocarpy bracket.
In the disclosure, blood vessel is intervened by the way that the ultrasound catheter 1 of ultrasonic transducer will be carry, and reaches the target of blood vessel
Region, ultrasonic transducer first emit ultrasonic wave to target area, then receive the ultrasonic wave through target area transmitting to form detection
Signal.External electronic imaging system receives the image that blood vessel section can be shown after the detection signal, such as the shape of lumen of vessels
State, the structure of vascular wall, and then the case where understanding target area.
Fig. 1 is the partial structural diagram of intravascular ultrasound catheter involved in the disclosure.
In some instances, as shown in Figure 1, ultrasound catheter 1 may include sheath 10, flexible drive shaft 20, detecting means 30
And connecting wire 40.In the disclosure, flexible drive shaft 20 can be connect with detecting means 30, and can in sheath 10 phase
To mobile for example opposite sliding.Connecting wire 40 is arranged in flexible drive shaft 20, and will be by (such as the ultrasonic sensing of detecting means 30
Device) obtain detection signal be transmitted in vitro.
In some instances, as shown in Figure 1, sheath 10 can be in elongated tubular product.Sheath 10 can have distal side 10A
With proximal lateral 10B.In some instances, outermost layer of the sheath 10 as ultrasound catheter 1 plays the work with protection and support
With.The length of sheath 10 is considered as the length available of ultrasound catheter 1, such as can be 125cm~145cm.
In some instances, the cross section of sheath 10 can be round.Thus, it is possible to reduce sheath 10 to the greatest extent
Friction between blood vessel, and then reduce the risk of injury of blood vessel.The cross-sectional diameter of sheath 10 can for 0.86mm~
2.97mm.In some instances, along the length direction of sheath 10, the size of the cross section of sheath 10 can change.
In some instances, the manufacture material of sheath 10 can have good bio-compatibility, reliable flexible, good
Corrosion-resistant and antithrombotic property.Such as it can be polymer or composite material.
In some instances, the outer wall of sheath 10 could be covered with coating (not shown).Coating for example may include nothing
Organic coating, natural polymer coating, synthesis at least one of polymeric coating layer or medication coat.
In some instances, sheath 10 may include imaging window (not shown).The length of imaging window does not limit especially
System, such as can be 0.85mm~1.55mm.Imaging window can be made of thin-wall plastic tubing.Pipe features can permit super
Decaying, reflection when imaging window conduct ultrasound between sonic transducer 31 and vascular tissue through sheath 10 with minimum energy
Or refraction.It, can be by with smooth inner wall and optimal rigidity but without conduct ultrasound in the non-imaged window portion of sheath 10
Composite material be made.
Fig. 2 is the partial structural diagram of flexible drive shaft involved in the disclosure.
In some instances, as shown in Fig. 2, flexible drive shaft 20 can have internal cavity 21.In some instances, even
External (being described later on) can be connected to via internal cavity 21 by connecing conducting wire 40.
In some instances, as shown in Fig. 2, flexible drive shaft described in flexible drive shaft 20 has along periphery winding not
Become rusty steel conducting wire 22.In some instances, flexible drive shaft 20 may include the stainless steel conducting wire 22 that two or more layers are inversely wound.
When being rotated as a result, by outer power drive flexible drive shaft 20, the stainless steel conducting wire 22 that two or more layers are inversely wound can be this
Kind rotary force is transferred to detecting means 30, and then the rotation of ultrasonic transducer 31 in detecting means 30 is driven to detect blood vessel target area
Situation.
In some instances, the stainless steel conducting wire 22 that two or more layers are inversely wound can make flexible drive shaft 20
Also there is enough rigidity in the case where having good suppleness.In this way, flexible drive shaft 20 is adapted to the life of different blood vessel
Reason construction situation reliably rotates driving to realize stable to ultrasonic transducer.The physical property and layer of stainless steel conducting wire 22
Number directly affects the rotation driving capability of flexible drive shaft 20, can be according to the weight and flexible driving for the detecting means 30 to be supported
The length of axis 20, the flexible number of plies for selecting stainless steel conducting wire 22, while guaranteeing stainless steel conducting wire 22 also and have enough suppleness.
In some instances, flexible drive shaft 20 can in sheath 10 Relative sliding.Flexible drive shaft 20 and sheath 10
Between can have gap.The presence in the gap can make flexible drive shaft 20 have sufficient revolution space in sheath 10.?
Some lubricating fluids for having ultrasound compatible can also be filled in gap.Such as it can be salt water.
In some instances, as shown in Fig. 2, flexible drive shaft 20 has distal portion 20A.Flexible drive shaft 20 can be used for
Carrying is located at the detecting means 30 of distal portion 20A.
In some instances, as shown in Figure 1, detecting means 30 can be set the distal side 10A in sheath 10, and with flexibility
Transmission shaft 20 connects.
Fig. 3 is the structural schematic diagram of detecting means involved in the disclosure.In some instances, as shown in figure 3, detecting means 30
It may include close end 30B.The area of section of the close end 30B of detecting means 30 can be greater than the distal portion of flexible drive shaft 20
The area of section of 20A.Thus, it is possible to easily make the distal portion 20A of flexible drive shaft 20 be embedded in detecting means in assembling process
30 close end 30B and welded and/or be adhesively fixed.
In some instances, the shape of detecting means 30 is not particularly limited, for example, the section of detecting means 30 can be circle
Shape.In such manner, it is possible to be rotated in sheath 10 convenient for detecting means 30 and relative to the movement of sheath 10.
In some instances, as shown in Figure 1, detecting means 30 can have the ultrasonic transducer for detecting angio-architecture
31.In some instances, ultrasonic transducer 31 may include the crystal that can generate piezoelectric effect.When ultrasonic transducer 31 receives
After the electric energy that connecting wire 40 is transmitted, mechanical energy can be converted electrical energy into, is thus surpassed according to the inverse piezoelectric effect of crystal
Sonic transducer 31 emits ultrasonic wave to blood vessel target area by vibration.
In addition, the vibration of ultrasonic transducer 31 will be caused when ultrasonic wave reflexes to ultrasonic transducer 31 from blood vessel target area
It is dynamic, in this way, ultrasonic transducer 31 can convert electric energy for mechanical energy according to the direct piezoelectric effect of crystal.That is ultrasonic transducer
31 produce the electric signal that can reflect vascular lesion situation.The electric signal can be transferred to external letter according to connecting wire 40 again
Number processing unit, such as image-display units can pass through the lesion situation that image shows blood vessel.
In some instances, ultrasonic transducer 31 can the rotation of flexible drive shaft 20 driving under high speed rotation.Such as
The revolving speed of ultrasonic transducer 31 can be 1800 revs/min, to complete 360 degree of dynamic vascular cross-sectional scans.Ultrasonic transducer 31
The frequency of the ultrasonic wave of transmitting is generally 20~40MHz, and azimuthal resolution is up to 80um, and lateral resolution is up to 200um.
In addition, position of the ultrasonic transducer 31 in detecting means 30 can keep same with the central axis of flexible drive shaft 20
Axis.The detection signal of ultrasonic transducer 31 being capable of image quality with higher as a result,.
In some instances, by the rotation to ultrasonic transducer 31 and movement can be withdrawn, can to lumen of vessels into
The accurate measurement of row.Such as maximum lumen diameter, minimum lumen diameter, lumen eccentricity index, lumen cross-sectional area can be measured
(CSA) and Lumen Area stenosis index etc..
In addition, in some instances, ultrasonic transducer 31 can be grounded via stainless steel conducting wire 22.Thereby, it is possible to effective
Ground inhibits interference, guarantees that the detection signal stabilization of acquisition is reliable.
In some instances, ultrasonic transducer 31 can be fixed on detecting means 30 by bonding agent or packaging plastic.As a result, can
It is enough that ultrasonic transducer 31 is firmly fixed at detecting means 30.The type of bonding agent is not particularly limited, and can be epoxy resin
Deng.Epoxy resin has preferable adhesive strength and chemical-resistance.It is eliminated in addition, epoxy resin is also used as absorbing
The acoustics base material of noise or reverberation that detecting means 30 are propagated.
In some instances, the quantity of ultrasonic transducer 31 is not particularly limited, such as can have and change in detecting means 30
It can device array (not shown).Transducer array may include multiple ultrasonic transducers 31 of any suitable number and type.In addition,
Multiple ultrasonic transducers 31 in transducer array, which can be, to be served as a contrast using polymer piezo material at Micro Electro Mechanical System (MEMS)
The ultrasonic transducer of the piezoelectric micro processing of bottom manufacture.In other examples, transducer array can also include that piezoelectricity zirconic acid changes
It can device (PZT), the ultrasonic transducer (CMUT) of capacitor micro machining and other suitable ultrasonic transducers and/or combination.
In some instances, detecting means 30 may include controller (not shown).Controller can be MEMS package component,
And it can be formed by multiple wafer stackings with different function.Cable can be passed through between controller and ultrasonic transducer 31
(connecting wire 40 being described later on) connection.Controller is capable of handling, amplified and adjusted from the received detection of ultrasonic transducer
Signal.Detecting signal can be analog signal, be transmitted again through connecting wire 40 in the form of digital signal after via controller processing
To external corresponding imaging device.
In addition, controller also can use anisotropic electrically conducting adhesive or suitable chip to the combination method of chip
It is installed to the substrate of ultrasonic transducer 31.Controller can also include amplifier, transmitter and related to ultrasonic transducer 31
The protection circuit of connection.Associated protection circuit between controller and ultrasonic transducer 31 can have ultrasonic transducer 31
The smallest influence.Specifically, can be the low distortion for guaranteeing signal transmitted waveform, high-speed communication, amplifier frequency response most
Small distortion and other electric appliance advantages.
In some instances, as shown in Figure 1, ultrasound catheter 1 can also include connecting wire 40.Connecting wire 40 can be set
It sets in internal cavity 21, the detection for connecting, and being obtained by ultrasonic transducer 31 with ultrasonic transducer 31 and/or controller
Signal is transported in vitro via proximal lateral 10B.
In some instances, connecting wire 40 may include the conducting wire of two opposed polarities, such as positive and negative polarity wire.Connection
Conducting wire 40 and the central axis and ultrasonic transducer 31 of flexible drive shaft 20 are coaxial, can guarantee in this way it is final it is higher at
Image quality amount.
In some instances, the material of connecting wire 40 is not particularly limited, and can have good flexibility, to adapt to
The rotary motion under various vascular conditions of flexible drive shaft 20.In addition, connecting wire 40 can have function of shielding, one
In a little examples, it can be realized by suitable conducting wire canoe or increase shielding physical layer.In this way, can protect signal electricity
Road is not by the existing electromagnetic interference (EMI) between each electronic component and/or circuit.It ensure that finally to external imaging device
The detection signal of transmission is high-precision.
(barrier structure)
In some instances, as shown in Figure 1 or 2, ultrasound catheter 1 can also include barrier structure 50.Specifically,
The distal side 10A of sheath 10, can be additionally provided be arranged between detecting means 30 and the internal cavity 21 of flexible drive shaft 20 with
The barrier structure 50 of detecting means 30 and internal cavity 21 is isolated.
In some instances, in the assembling process of ultrasound catheter 1, when detecting means 30 fill bonding agent or packaging plastic with solid
When the ultrasonic transducer 31 or controller of its fixed inside or other electronic devices, bonding agent or packaging plastic are easy to from thinner company
It connects in the gap between conducting wire 40 and the internal cavity 21 of flexible drive shaft 20 and is lost, thus, it is possible to barrier structure 50 is set, with
Guarantee that bonding agent for fixing ultrasonic transducer is enough and ensure that the bonding agent that flexible drive shaft will not be infiltrated
Destroy verticity (such as flexible drive shaft 20 may be because the solidification of the bonding agent or packaging plastic that penetrate into and harden).Finally,
Improve the image quality of ultrasonic transducer.
In some instances, the distal side 40A for protruding into the connecting wire 40 of detecting means 30 can be attached ultrasonic transducer
31.The length of distal side 40A can be 200um-500um.As a result, connecting wire 40 both can have good flexibility (can
Bendability), can also be in very short length, distal side 40A still has certain rigidity.
Fig. 4 be barrier structure involved in the disclosure be in connecting wire distal side when cross-sectional view.
In some instances, barrier structure 50 can be the becket of internal diameter Yu the matched annular shape of the connecting wire,
Thus barrier structure 50 can be more firmly arranged between detecting means 30 and the internal cavity 21 of flexible drive shaft 20, can keep away
Exempt from radial deflection or shaking of the distal side 40A of connecting wire 40 in the assembling process of ultrasound catheter 1.In some instances,
Barrier structure 50 can just between the distal side 40A of connecting wire 40 and the inner wall 211 of internal cavity 21 (such as Fig. 4 institute
Show).In such a case, it is possible to which limit connecting wire distal side well the case where radial deflection, makes in assembling process
Ultrasonic transducer 31 after bonding agent or packaging plastic are fixed is on the central axis of flexible drive shaft 20, ensure that final
Image quality.
In some instances, the barrier structure being arranged between detecting means 30 and the internal cavity 21 of flexible drive shaft 20
50 can guarantee in the blood vessels ultrasound catheter 1 using thinner conducting wire assembled when, be not in be filled in detecting means 30
Bonding agent penetrates into the case where internal cavity 21 of flexible drive shaft 20, in this manner it is ensured that for fixing ultrasonic transducer 31
Bonding agent is enough and ensure that the bonding agent that flexible drive shaft 20 will not be infiltrated destroys verticity, is finally improved
The image quality of ultrasonic transducer 31.
In some instances, barrier structure 50 can be arranged around connecting wire 40.As a result, ultrasound catheter 1
Assembling process becomes convenient.Specifically, by the end of the distal side 10A of the close sheath 10 of connecting wire 40 and can surpass
Sonic transducer 31 is electrically connected, and barrier structure 50 is sheathed on connecting wire 40, and flexible drive shaft 20 is placed in sheath 10,
And connecting wire 40 is penetrated from the internal cavity 21 of flexible drive shaft 20 close to the end of distal side；Make barrier structure 50 along
Connecting wire 40 is advanced into the end of internal cavity 21, and barrier structure 50 is kept to be in the interior of detecting means 30 and flexible drive shaft 20
Between portion's cavity 21, detecting means 30 and internal cavity 21 are isolated.
Fig. 5 is the schematic diagram of the intravascular ultrasound catheter involved in the disclosure with guidewire lumen,
In some instances, as shown in figure 5, ultrasound catheter 1 can also include guidewire lumen 60, medical guiding wire 70 and partition
Portion 80.Guidewire lumen 60 can be used for wearing the medical guiding wire 70 for connecing and can extend into blood vessel.Intravascular ultrasound catheter 1 can as a result,
Blood vessel target area is directed to by medical guiding wire 70 well.
It in some instances, can be first with puncture needle or other sting devices when entering blood vessel using ultrasound catheter 1
Blood vessel is punctured, medical guiding wire 70 is then entered into blood vessel until lesion vessels region along the location push punctured.Due to seal wire
Then seal wire is worn in inner cavity 60, and therefore, ultrasound catheter 1 can be flat along medical guiding wire 70 (seal wire can be regarded as a track)
Steady enters blood vessel.
In addition, for the sake of security, medical guiding wire 70 can be the soft seal wire with J-type head.It, can be with into before blood vessel
First by exploratory several centimetres of feeding blood vessel of medical guiding wire 70.If can continue under the monitoring of X-ray without obvious resistance
Promote seal wire to blood vessel target area.
Fig. 6 is a kind of schematic diagram of intravascular ultrasound system involved by the disclosure.In some instances, as shown in fig. 6, blood
Intraductal ultrasonography system may include intravascular ultrasound catheter 1, withdraw device 2 and ultrasonic host 3.
In some instances, withdraw device 2 can by flexible drive shaft 20 with certain speed from vascular lesion to external
It recalls.Ultrasonic host 3, which can be used for receiving being obtained by ultrasonic transducer 31 and being transported to external detection via proximal lateral 10B, to be believed
Number.Since intravascular ultrasound system has intravascular ultrasound catheter 1, image quality is further improved.
Hereinafter, describing the operating process of intravascular ultrasound system referring to Fig. 7.
Firstly, 70 intravascular perforation position of medical guiding wire is entered into blood vessel target area such as diseased region, it then will be ultrasonic
Conduit 1, which is worn, connects on medical guiding wire 70 and pushes to blood vessel target area, while ensuring the ultrasonic transducer 31 of ultrasound catheter 1
The distal end of (probe) in blood vessel target area.In this manner it is ensured that the complete detection to blood vessel target area.
Then, the image of blood vessel target area is checked on ultrasonic host 21.After confirmation, 1 He of ultrasound catheter is kept
Medical guiding wire 70 is motionless, starting withdraw device 2 by flexible drive shaft 20 (imaging core mandrel) with certain speed from vascular lesion
To recalling automatically in vitro.During withdrawing, ultrasonic transducer 31 can be driven to blood vessel mesh by rotational flexibility transmission shaft 20
The situation (such as lumen and tube wall) for marking region carries out wheel measuring.
Finally, first keep the position of medical guiding wire 70 constant after recalling flexible drive shaft 20, after first withdrawing from ultrasound catheter 1,
Medical guiding wire 70 is withdrawn again.
In addition, the imaging effect of ultrasound catheter 1 is influenced, in medical guiding wire 70 and ultrasound to avoid forming thrombus in blood vessel
Conduit 1 needs to give heparin in advance before entering blood vessel.In addition, being imaged according to the detection signal of ultrasonic transducer 31
Before, it is also desirable in intracoronary injection nitroglycerin, to avoid coronary spasm.
Fig. 7 is the assembly method flow diagram of intravascular ultrasound catheter involved in the disclosure.Hereinafter, being retouched with reference to Fig. 7
State this disclosure relates to intravascular ultrasound catheter assembly method.
In some instances, the assembly method of intravascular ultrasound catheter includes fixing in the end of the distal side of connecting wire
It connects ultrasonic transducer (step S100), barrier structure (step S200) is arranged on the distal side of connecting wire, in sheath
Flexible drive shaft is placed, and connecting wire is penetrated into (step S300) from the far distance port of the internal cavity of flexible drive shaft, when even
Stop penetrating when connecing the distal side of conducting wire close to internal cavity, barrier structure is kept to be in the remote of the internal cavity of flexible drive shaft
Port (step S400).
In addition, storing ultrasonic transducer with detecting means, and make inside flexible driving axial direction detecting means after step S400
Then frictional movement a distance is welded and/or is bonded (step S500) and injects bonding agent from detecting means with fixed super
Sonic transducer (step S600).
The assembly method of the intravascular ultrasound catheter provided according to the disclosure is additionally provided with and is arranged in flexible drive shaft
The barrier structure of detecting means and internal cavity is isolated between detecting means and internal cavity, thus, it is possible to ensure ultrasonic transducer with
The concentricity of connecting wire, and inhibition process materials such as bonding agent etc. penetrates into the inside of flexible drive shaft in assembling process
Cavity and destroy its verticity, to improve the image quality of ultrasonic transducer.
Although being illustrated in conjunction with the accompanying drawings and embodiments to the disclosure above, it will be appreciated that above description
The disclosure is not limited in any form.Those skilled in the art without departing from the true spirit and scope of the present invention may be used
To be deformed and be changed to the disclosure as needed, these deformations and variation are each fallen in the scope of the present disclosure.
Claims (10)
1. a kind of intravascular ultrasound catheter characterized by comprising
Sheath is in elongated tubular product, has distal side and proximal lateral；
Flexible drive shaft can slide in the sheath, and the flexible drive shaft has internal cavity；
Detecting means, are arranged in the distal side of the sheath, and with the flexible driving axis connection, the detecting means, which have, to be used
In the ultrasonic transducer of detection angio-architecture；And
Connecting wire is arranged along the internal cavity and is connect with the ultrasonic transducer, and will be changed by the ultrasound
The detection signal that energy device obtains is transported in vitro,
Wherein, it in the flexible drive shaft, is additionally provided with and is arranged between the detecting means and the internal cavity to be isolated
State the barrier structure of detecting means Yu the internal cavity.
2. intravascular ultrasound catheter as described in claim 1, it is characterised in that:
The barrier structure closes the gap between the connecting wire and the internal cavity of the flexible drive shaft.
3. intravascular ultrasound catheter as claimed in claim 1 or 2, it is characterised in that:
The barrier structure is the becket of internal diameter and the matched annular shape of the connecting wire.
4. intravascular ultrasound catheter as described in claim 1, it is characterised in that:
The ultrasonic transducer is fixed on the detecting means by bonding agent.
5. intravascular ultrasound catheter as described in claim 1, it is characterised in that:
The detecting means include the area of section along width direction of the ultrasonic transducer greater than the flexible driving
The area of section along width direction of axis.
6. intravascular ultrasound catheter as described in claim 1, it is characterised in that:
The flexible drive shaft has the stainless steel conducting wire wound along periphery.
7. intravascular ultrasound catheter as claimed in claim 6, it is characterised in that:
The ultrasonic transducer is via the stainless steel wired earth.
8. intravascular ultrasound catheter as claimed in claim 1 or 2, it is characterised in that:
The barrier structure is arranged around the connecting wire.
9. intravascular ultrasound catheter as described in claim 1, it is characterised in that:
It further include the guidewire lumen slideably received within individual medical guiding wire.
10. a kind of intravascular ultrasound system characterized by comprising
Intravascular ultrasound catheter as described in any one of claims 1-9；
Device is withdrawn, is used for the flexible drive shaft with certain speed from blood vessel target area to recalling in vitro；And
Ultrasonic host, is used to receive and is obtained by the ultrasonic transducer and be transported to the external inspection via the proximal lateral
Survey signal.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201820935510.1U CN209018784U (en) | 2018-06-17 | 2018-06-17 | Intravascular ultrasound catheter and system |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201820935510.1U CN209018784U (en) | 2018-06-17 | 2018-06-17 | Intravascular ultrasound catheter and system |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN209018784U true CN209018784U (en) | 2019-06-25 |
Family
ID=66868234
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201820935510.1U Active CN209018784U (en) | 2018-06-17 | 2018-06-17 | Intravascular ultrasound catheter and system |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN209018784U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108670307A (en) * | 2018-06-17 | 2018-10-19 | 深圳北芯生命科技有限公司 | Intravascular ultrasound catheter, system and its assembly method |
-
2018
- 2018-06-17 CN CN201820935510.1U patent/CN209018784U/en active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108670307A (en) * | 2018-06-17 | 2018-10-19 | 深圳北芯生命科技有限公司 | Intravascular ultrasound catheter, system and its assembly method |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN108670307A (en) | Intravascular ultrasound catheter, system and its assembly method | |
| US11576649B2 (en) | Rotational intravascular ultrasound probe with an active spinning element | |
| US20220240891A1 (en) | Catheter with integrated controller for imaging and pressure sensing | |
| US4951677A (en) | Acoustic imaging catheter and the like | |
| EP2846698B1 (en) | Ultrasound catheter for imaging and blood flow measurement | |
| CN102469986B (en) | Device with integrated ultrasound transducers and flow sensor | |
| US20210059642A1 (en) | Intravascular ultrasound device with impedance matching structure | |
| JPH05502171A (en) | Intraductal ultrasound imaging probe | |
| CN112826536A (en) | Intravascular ultrasonic imaging catheter and system | |
| JP2021505260A (en) | Rewind-type flexible substrate for intracavitary ultrasound imaging equipment | |
| CN209018784U (en) | Intravascular ultrasound catheter and system | |
| JP2021505263A (en) | Retractable flexible substrate with integrated window for intracavitary ultrasound imaging | |
| US9370337B2 (en) | Wirebonding fixture and casting mold | |
| US20220395255A1 (en) | Transducer for ultrasound measuring systems and methods | |
| CN215306087U (en) | Intravascular ultrasonic imaging catheter and system | |
| CN210784420U (en) | Intravascular ultrasound system | |
| CN110882005A (en) | Intravascular ultrasound system |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| CP01 | Change in the name or title of a patent holder | ||
| CP01 | Change in the name or title of a patent holder |
Address after: Area E, 3 / F, building 3, Tingwei Industrial Park, No.6 Liufang Road, Xin'an street, Bao'an District, Shenzhen City, Guangdong Province Patentee after: Shenzhen Beixin Life Technology Co.,Ltd. Address before: Area E, 3 / F, building 3, Tingwei Industrial Park, No.6 Liufang Road, Xin'an street, Bao'an District, Shenzhen City, Guangdong Province Patentee before: INSIGHT LIFETECH Co.,Ltd. (SHENZHEN ) |