CN205515929U - A guiding catheter - Google Patents
A guiding catheter Download PDFInfo
- Publication number
- CN205515929U CN205515929U CN201620064790.4U CN201620064790U CN205515929U CN 205515929 U CN205515929 U CN 205515929U CN 201620064790 U CN201620064790 U CN 201620064790U CN 205515929 U CN205515929 U CN 205515929U
- Authority
- CN
- China
- Prior art keywords
- sacculus
- outer tube
- guiding catheter
- cavity
- guiding
- 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
Landscapes
- Media Introduction/Drainage Providing Device (AREA)
Abstract
The utility model provides a guiding catheter, a guiding catheter is used for the B ultrasonic location, sacculus including pipe body and expandable, the pipe body includes inner tube and outer tube, the inner tube sets up in the outer tube, the sacculus sets up on the outer tube, be formed with a cavity between inner tube and the outer tube, the liquid or the gas that are used for the B ultrasonic location lets in in the cavity, be provided with the through -hole with cavity and sacculus intercommunication on the outer tube.
Description
Technical field
This utility model relates to technical field of medical instruments, leads particularly to a kind of guiding for B ultrasonic location
Pipe.
Background technology
Through femoral artery or radial artery puncturing, by interventional medical device, such as arteria coronaria sacculus, coronary artery bracket, the heart
Dirty interior various stoppers etc., before sending into and arriving diseased region, are required for guiding catheter and build passage in advance.
At present, pushing guiding catheter in human body mainly uses two ways to position:
First kind of way (being common in Cardiological) is to judge guiding catheter by X-ray radiation by contrast agent
Whether reach the position of devices call.But, this mode needs doctor to wear thick and heavy lead clothing to protect,
While it is true, doctor and patient still can the substantial amounts of X-ray of Passive intake, health is had undesirable effect.
The second way (being common in Cardiac Surgery) is the position by B ultrasonic monitoring guiding catheter.Although B ultrasonic
Human safety is better than X-ray, but existing guiding catheter, due to lacking in its material and structure
Falling into, be unfavorable for the development under B ultrasonic, so the mortality of operation is the highest, and doctor's operation depends on experience,
It is inconvenient for.
Based on problems of the prior art, it is necessary to a kind of guiding catheter of exploitation, may be implemented in B ultrasonic ring
Development under border.
Utility model content
The purpose of this utility model is to provide a kind of guiding catheter, and this guiding catheter can show under B ultrasonic environment
Shadow, to promote guiding catheter development capability under B ultrasonic environment, thus promotes the stationkeeping ability of guiding catheter,
And then avoid X-ray for doctor and the injury of patient.
For achieving the above object, this utility model provides a kind of guiding catheter, and described guiding catheter is used for B
Overdetermination position, including a catheter body, also includes a sacculus；Described catheter body includes inner and outer tubes, institute
Stating inner tube to be arranged in described outer tube, described sacculus is arranged on described outer tube；Between said inner tube and outer tube
It is formed with a cavity, described cavity is passed through the liquid for B ultrasonic location or gas, described outer tube is arranged
There is the through hole connected with described cavity and sacculus.
Preferably, in described guiding catheter, the quantity of described through hole is one or more.
Preferably, in described guiding catheter, multiple described through holes are distributed along the axially spaced-apart of described outer tube；
And/or, multiple described through holes are distributed along the radial symmetric of described outer tube.
Preferably, in described guiding catheter, described through hole is manhole or polygonal through hole.
Preferably, in described guiding catheter, described outer tube and inner tube are coaxially arranged.
Preferably, in described guiding catheter, described outer tube is braided tube.
Preferably, in described guiding catheter, the spacing phase of adjacent two through holes in multiple described through holes
Deng.
Preferably, in described guiding catheter, described sacculus is set on described outer tube；Or, described outside
Pipe is positioned at the outside of described sacculus, and at least one end of described sacculus is installed on described outer tube.
Preferably, in described guiding catheter, described sacculus includes main part and from described main part
Two ends each extend over the left extension of formation and right extension.
Preferably, in described guiding catheter, the area of described through hole is 0.1～3.0mm2。
Preferably, in described guiding catheter, the material of described sacculus be thermoplastic polyurethane, nylon,
One or more in polyethylene, block polyetheramides and polyethylene terephthalate.
Preferably, in described guiding catheter, described sacculus includes the sacculus body of the inside and outside socket of N shell, its
In, N is the positive integer between 2 to 30.
Preferably, in described guiding catheter, the material hardness of the sacculus body of n-th layer is less than remainder layer
The material hardness of sacculus body, the sacculus body of described n-th layer is positioned at outermost layer.
Preferably, in described guiding catheter, described guiding catheter also includes a connection piece, described connection
Part is socketed in the near-end of described outer tube, and is connected with the near-end of said inner tube, and described connector has the first chamber
Body and the second cavity, described first cavity connects with described cavity, and described second cavity is interior with said inner tube
Portion connects.
Preferably, in described guiding catheter, described guiding catheter also includes a sheath, described sheath set
It is connected on described outer tube, and is at least partly coated with described connector or the far-end with described connector is connected.
Preferably, in described guiding catheter, in the expanded state, the maximum outside diameter of described sacculus exists
Between 1.0mm～40.0mm.
Preferably, in described guiding catheter, in the expanded state, described sacculus is along the axial length of outer tube
Degree is between 3.0mm～280.0mm.
Compared to prior art, guiding catheter provided by the utility model, have the advantages that
1, guiding catheter of the present utility model, on the one hand by arranging the inner and outer tubes of inside and outside socket, strengthens
The structural strength of guiding catheter, and then when implementing et al. Ke art, be beneficial to push guiding catheter smoothly, separately
One side by arranging expandable sacculus on outer tube, described sacculus can by the through hole being arranged on outer tube,
And the cavity connected with described through hole formed between the inner and outer pipe sections is as full passage, thus at B
Under hyperenvironment, by means of the developability of the sacculus being passed through gas or liquid, facilitate patient that guiding catheter is pushed away
Pass through Cheng Jinhang location or diagnosis, thus improve guiding catheter development capability under B ultrasonic, also improve
The stationkeeping ability of guiding catheter, it is to avoid X-ray is to patient and the injury of patient；
2, the quantity of through hole of the present utility model is multiple, and along the axially spaced-apart distribution of described outer tube, and/
Or, the radial symmetric along described outer tube is distributed, and so can promote full efficiency so that described sacculus is rapid
Expand；
3, outer tube of the present utility model use braiding tubing, so improve the structural strength of outer tube, can in case
When only the sacculus under swelling state shrinks, outer tube collapses on inner pipe, causes described sacculus to shrink the most even
Cannot shrink, thus extend operating time, cause operative failure；
4, sacculus of the present utility model uses multiple material to be mixed, or uses the sacculus of the inside and outside socket of multilamellar
Body, so can promote the resilience of sacculus, and thus, before full or after filling, described sacculus will not be right
Guiding catheter adversely affects, and the sacculus that resilience is good, and it is full and contraction speed is fast, full and
Contractive effect is good.
Accompanying drawing explanation
Fig. 1 is the front view of the guiding catheter of this utility model one embodiment；
Fig. 2 is the axial sectional view of the guiding catheter of this utility model one embodiment；
Fig. 3 is the end view drawing of the guiding catheter of this utility model one embodiment；
Fig. 4 is the guiding catheter of another embodiment of this utility model partial view under axial section view state；
Fig. 5 a is the sectional view of the through hole arranged on the outer tube of this utility model one embodiment；
Fig. 5 b is the sectional view of the through hole arranged on the outer tube of another embodiment of this utility model；
Fig. 5 c is the sectional view of the through hole arranged on the outer tube of the another embodiment of this utility model；
Fig. 6 is the sectional view of the two-layer sacculus of this utility model one embodiment.
1-catheter body；2-sacculus；21-the first sacculus body；22-the second sacculus body；3-inner tube；4-outer tube；
5-cavity；6-through hole；7-connector；71-the first cavity；72-the second cavity；8-joint；9-sheath；
Detailed description of the invention
For making the purpose of this utility model, advantage and feature clearer, below in conjunction with accompanying drawing 1～6 to this reality
It is described in further detail with the guiding catheter of novel proposition.It should be noted that, accompanying drawing all uses and simplifies very much
Form and all use non-ratio accurately, only in order to convenient, aid in illustrating this utility model lucidly and implement
The purpose of example." near-end " involved in this utility model refers to that the operator apart from this guiding catheter is nearer
One end, " far-end " refers to the operator one end farther out apart from this guiding catheter.
Fig. 1 is illustrated that the front view of the guiding catheter of this utility model embodiment one, and Fig. 2 is shown in Fig. 1
The axial sectional view of guiding catheter, Fig. 3 is the end view drawing of the guiding catheter shown in Fig. 1.Here, ability
Territory personnel are it is to be understood that on the length direction of guiding catheter, the application is all with ellipse (i.e. fracture form)
Illustrate, lower same.
Refering to Fig. 1～3, described guiding catheter positions for B ultrasonic, including catheter body 1 and sacculus 2；Described
Catheter body 1 includes inner tube 3 and outer tube 4, and said inner tube 3 is arranged in outer tube 4, and described sacculus 2 is arranged
On outer tube 4；It is formed with a cavity 5 between said inner tube 3 and outer tube 4, described cavity 5 is passed through use
In the full medium of B ultrasonic location, described outer tube 4 is provided with the through hole 6 connected with cavity 5 and sacculus 2,
Thus, full medium just can be filled with in sacculus 2 by cavity 5 and through hole 6, makes sacculus 2 realize expanding.
Wherein, described sacculus 2 is mainly disposed to the far-end of described guiding catheter, to implant.
When specifically applying, said inner tube 3 is used as guidewire lumen, to place seal wire, under the guiding of described seal wire,
In the far-end implantable of described guiding catheter, and then after reaching lesion locations, cavity 5 and through hole 6 can be passed through
Full medium is passed through in sacculus 2, so that sacculus 2 expands (i.e. opening), and then utilizes B ultrasonic equipment, just
Can be developed the sacculus 2 after expanding.
The guiding catheter of the present embodiment, on the one hand by arranging inner tube 3 and the outer tube 4 of inside and outside socket, enhances
The structural strength of guiding catheter, during implanting, is beneficial to push guiding catheter smoothly, thus promotes
Guiding catheter implantable, the opposing party is by arranging sacculus 2 on outer tube 4, and described sacculus 2 can pass through
The through hole 6 being arranged on outer tube 4 and the sky connected with through hole 6 formed between inner tube 3 and outer tube 4
Chamber 5 is as full passage, thus under B ultrasonic environment, by means of being passed through the good of sacculus 2 after gas or liquid
Good developability, it is simple to the propelling movement process of guiding catheter is positioned or diagnoses by patient, thus promotes guiding
Conduit development capability under B ultrasonic, also improve the stationkeeping ability of guiding catheter simultaneously, it is to avoid X-ray
To patient and the injury of patient.
The full medium of the present embodiment can be gas or liquid, and concrete this utility model does not limit.Preferably
Described full medium is contrast solution, and the developability of the sacculus 2 after expansion is more preferable.
Particularly, described outer tube 4 and inner tube 3 are coaxially arranged, the most just in inwall and the inner tube 3 of outer tube 4
Outer wall between form an annular cavity 5, and coaxially arranged, beneficially in implantation process, effectively adjust
The bending direction of guiding catheter, convenient propelling movement guiding catheter.
In the present embodiment, described sacculus 2 can be set on outer tube 4, as depicted in figs. 1 and 2.At another
In embodiment, as shown in Figure 4, Fig. 4 is that the guiding catheter of another embodiment of this utility model is in axial section view
Partial view under state.In the diagram, described sacculus 2 is arranged on outer tube 4 in non-socket mode, tool
Body, whole outer tube 4 is positioned at the outside of sacculus 2, and described sacculus 2 is solid by its two relative ends
Being located on outer tube 4, the most described sacculus 2 is parallel with outer tube 4, to reduce the overall dimensions of guiding catheter,
It is easy to implant.Additionally, two ends of the sacculus 2 shown in Fig. 4 are respectively arranged with a through hole 6,
Each through hole 6 connects with cavity 5.It addition, when whole outer tube 4 is positioned at sacculus 2 outside, described ball
Capsule 2 also can only have an end (being equivalent to an opening, not shown), one end and outer tube 4
Outer wall be connected, thus realize non-socket connect, now, one end can arrange accordingly one lead to
Hole 6.
Socket mode shown in corresponding diagram 1 and Fig. 2, the quantity of described through hole 6 is preferably several.Multiple institutes
State the through hole 6 axially spaced-apart distribution along outer tube 4, and each through hole 6 all connects with cavity 5, the most permissible
Being passed through full medium by multiple through holes 6 to sacculus 2, filling velocity is fast, filling effect good simultaneously.More excellent
Choosing, multiple described through holes 6 are distributed along the radial symmetric of outer tube 4, namely axially symmetric about outer tube 4,
So it is easy to balance filling pressure, reduces adverse effect when sacculus 2 fills or shrinks, guiding catheter caused.
In another kind of embodiment, be positioned at the distribution of outer tube 4 through hole 6 above present adjacent two through hole 6 away from
From equal rule.In other words, when outer tube 4 launches, the through hole 6 being distributed on outer tube 4 forms some
Individual equilateral triangle.In the distribution mode of the most several through holes is for both ensureing cavity 5, developer solution fills
Flow velocity to sacculus is sufficiently fast, and when developer solution reclaims, the pressure that sacculus 2 is applied to outer tube 4 is equal
Weighing apparatus, do not result in outer tube 4 subside so that cause sacculus resilience the most even cannot resilience, extend operation time
Between, cause operative failure.
Optional, when outer tube 4 launches, described through hole 6 is manhole (being illustrated in Fig. 5 a), it is also possible to be
The polygonal through hole such as tetragon (being illustrated in Fig. 5 b) or hexagon (being illustrated in Fig. 5 c).Employing polygon leads to
Hole is conducive to controlling flow, flow velocity, to meet the use requirement of different user.The most described polygonal through hole
For regular polygon, easy to process.The cross-sectional area of the most described single through hole 6 projection in the plane
It is 0.1～3.0mm2。
Either using socket is also that non-socket is connected with outer tube 4, and described sacculus 2 may each comprise main part
(i.e. balloon portion) and each extend over the left extension of formation and right extension from the two ends of described main part,
Described left and right extension substantially in tubing shape, described main part expand after can in spherical shape or ellipsoid shape or
Calabash shaped.Described left extension and right extension are all connected with the outer wall of outer tube 4.Such as when described sacculus 2
When being socketed on outer tube 4, described through hole 6 is preferably placed at described main part, as shown in Figure 2.
In the present embodiment, in the expanded state, the maximum outside diameter of described sacculus 2 1.0mm～40.0mm it
Between, described sacculus along the axial length of outer tube 4, is consequently adapted to human body and implants between 3.0mm～280.0mm
Environment, it is ensured that the applicability of guiding catheter.Certainly, this utility model is preferred including, but not limited to these
Size, is configured with specific reference to practical situation.
Optional, described sacculus 2 is made up of a kind of material, such as thermoplastic polyurethane (TPU), nylon (Nylon),
Polyethylene (PE), block polyetheramides (Pebax) and the one of polyethylene terephthalate (PET)
Kind.Preferably, described sacculus 2 by multiple material be blended make, for example with thermoplastic polyurethane, nylon,
Multiple being blended in polyethylene, block polyetheramides and polyethylene terephthalate is made.Use altogether
The sacculus 2 that mixed material is made, the resilience of described sacculus 2 is good, then, before full or after filling, described
Guiding catheter will not be caused too much influence by sacculus 2, and the sacculus 2 that resilience is good, it is full and shrinks
Speed is fast, full good with contractive effect.
In order to promote the resilience of sacculus 2, described sacculus 2 preferably includes the sacculus body of the inside and outside socket of N shell,
Wherein, N is the positive integer more than or equal to 2.
Fig. 6 is the sectional view of the two-layer sacculus of this utility model one embodiment.As shown in Figure 6, the ball of two-layer
Capsule 2 includes the first sacculus body 21 and the second sacculus body 22, and described second sacculus body 22 is coated on the first sacculus
On body 21, to constitute the outer layer of described first sacculus body 21.Preferably, the material of described first sacculus body 21
Hardness is higher than the material hardness of the second sacculus body 22, to avoid outermost sacculus bulk damage tissue as far as possible.
Sum it up, when N is more than 2, the material of the sacculus body of n-th layer is less than the material of the sacculus body of remainder layer
Hardness, the sacculus body of described n-th layer is positioned at outermost layer.Optional, it is provided with viscous between the sacculus body of adjacent layer
Connect layer, to be connected with each other by bonding way.
Optional, described N is between 2～30.The number of plies of sacculus 2 is the most particularly limited by this utility model,
Generally, the number of plies of described sacculus 2 is the most, and its burst pressure is the highest, and reliability is the best, but, layer
Number is the most, and the difficulty of processing of described sacculus 2 is the highest, and the concrete number of plies can be configured according to actual needs.
In preferred version, described outer tube 4 uses braiding tubing, to promote the structural strength of outer tube 4, permissible
When preventing the sacculus 2 under swelling state from shrinking, described outer tube 4 is collapsed upon in inner tube 3, causes sacculus 2 to be received
Contracting slowly even cannot be shunk, and thus extends operating time, causes operative failure, and structural strength is good
Also allow for the implantation of guiding catheter, therefore, guiding catheter to pass through performance good.
If described outer tube 4 is braiding tubing (not shown), it can include a network structure and be coated with described net
The inner core of shape structure.Described inner core and network structure all use the material that biocompatibility is good to make, such as
Employing macromolecular material is made, described inner core for example, plastic tube.Preferably said inner tube 3 is also adopted by macromolecule
Material is made.
With continued reference to Fig. 1 and Fig. 2, described guiding catheter also includes that a connector 7, described connector 7 overlap
It is connected on the near-end of outer tube 4, and is connected with the near-end of inner tube 3.Here, described near-end refers near use
One end of person, otherwise, far-end refers to the one end away from user, lower same.Additionally, described outer tube 4
The far-end of far-end and inner tube 3 links together accordingly, the mechanical connection manner such as coordinated by positive
Connect, thus constitute the head end of guiding catheter.Described head end can be used for entering and internal realizes guidance function.
In the present embodiment, described connector 7 has the first cavity 71 and the second cavity 72, described first cavity
71 connect with cavity 5, and described second cavity 72 connects with the inside of inner tube 3.Described first cavity 71
Opening part can arrange a joint 8, such as sacculus joint, for being connected with outside medium supply apparatus, excellent
Described joint 8 is selected to removably connect the first cavity 71.
Further, described guiding catheter also includes a sheath 9, and described sheath 9 is socketed in the near-end of outer tube 4,
And at least part of cladding connector 7, or sheath 9 and the distal bond of connector 7.Concrete, described in protect
Set 9 is socketed on outer tube 4, and its one end covers on connector 7.
Holding above-mentioned, the present embodiment additionally provides the preparation method of a kind of above-mentioned guiding catheter, described preparation method
Comprise the steps:
Step one: sacculus 2 is arranged on one and has on the outer tube 4 of through hole 6；
Step 2: inner tube 3 is inserted outer tube 4, makes to form a cavity 5 between inner tube 3 and outer tube 4, described
Cavity 5 passes in and out for being passed through gas or liquid, described gas or the liquid via through holes 6 positioned for B ultrasonic
Sacculus 2；And
Step 3: encapsulation inner tube 3 and the far-end of outer tube 4.
The preparation process of the guiding catheter of the present embodiment is simple, low cost, and the guiding catheter prepared is at B
There is under hyperenvironment good developability.
In preferred version, before sacculus 2 is arranged on outer tube 4, the preparation process bag of described sacculus 2
Include following steps:
Step S1: a sacculus tubing and an expanding plasty mould are provided；Described expanding plasty mould can be according to need
The profile of the sacculus of preparation is configured, and concrete this utility model does not limit；
Step S2: described sacculus tubing is positioned in described expanding plasty mould, and by described sacculus tubing
One end close；
Step S3: from the other end of described sacculus tubing, gas is passed through described sacculus tubing, to expand
State sacculus tubing；And
Step S4: stretch during by described sacculus tubing heat treatment, to obtain sacculus 2.
The preparation method using the present embodiment to provide, can prepare the sacculus 2 of different size, to mate difference
The guiding catheter of specification, thus meet different demands.
In step s3, optional described gas is nitrogen, and the atmospheric pressure value being passed through described nitrogen exists
Between 1.0atm～60.0atm, wherein, atm is a normal atmosphere.
In step s 4, the heating-up temperature of described sacculus tubing can be between 50 DEG C～200 DEG C, in order to real
Execute stretched operation, make described sacculus tubing produce plastic deformation.
Preferably, in step s 4, the described sacculus tubing after heat treatment is implemented twice stretching, to obtain ball
Capsule 2；Wherein, through stretching for the first time, the main part of sacculus 2 can be obtained；Through second time stretching, can
Obtain the left extension of sacculus 2 and right extension；Described left extension and right extension connect described master respectively
One end of body portion.In stretching for the first time, concrete operating process includes:
The pulling force (such as 20N～900N) of setting is imposed at the two ends of described sacculus tubing, and with the stretching set
Speed, as described in draw speed is 30mm/s～500mm/s stretches, sacculus tubing is to a certain distance, such as
Distance is 5mm～500mm, just can get the main part (i.e. balloon portion) of sacculus 2.
It is further preferred that after step s4, after i.e. described sacculus tubing being implemented stretching, also comprise the steps:
The sacculus 2 of acquirement is carried out a heat treatment, with sacculus 2 of shaping.Specifically, described sacculus tubing
After stretching, the sacculus 2 of acquisition is heated to a certain temperature (such as 90 DEG C～300 DEG C), and certain pressure (as
1atm～60atm) under keep a period of time, subsequently, can cool down by recirculated cooling water, cooling water water
Optional-20 DEG C～60 DEG C of temperature.
Further, in step one, the sacculus 2 after sizing is before being installed on outer tube 4, also through one
Secondary heat treatment, in order at least one end of sacculus 2 is installed on outer tube 4.
Optional, the sacculus 2 after sizing can be heated to a certain temperature (such as 50 DEG C～120 DEG C), and when being incubated one section
Between (optional 0.5min～60.0min), afterwards, can be bonding by sacculus 2 by laser welding or medical glue
One or both ends are fixed on outer tube 4.Employing laser welding not only processing speed is fast, good stability, but sets
Standby cost is high, and bonding apparatus low cost, but treatment effeciency is low, and connective stability is poor.
In the present embodiment, the power of laser welding is chosen as 100mW～3000mW, and rotating speed exists
Between 100rpm～5000rpm, speed is 0.1mm/s～200mm/s；Wherein, mW is milliwatt, rpm-
For revolution per minute.When medical grade glue is bonding, 365nm mercury lamp, preferably ultraviolet lighting intensity can be used
More than or equal to 50mW/cm2Under, irradiation time is 10s～900s；Wherein, mW/cm2For light intensity, i.e.
The milliwatt number of every square centimeter.
Additionally, in order to connect inner tube 3 and outer tube 4, the preparation of the guiding catheter of the present embodiment also includes: outside
Through hole 6 is got on pipe 4.After sacculus 2 is connected with outer tube 4, then inner tube 3 is inserted in outer tube 4, formed
Cavity 5, the far-end of inner tube 3 and outer tube 4 is by weld or bonding process assembles, and inner tube 3 and outer tube 4
Assemble proximally by connector 7.Concrete, the body of described connector 7 is socketed on outer tube 4, described
First cavity 71 of connector 7 is connected with the first opening on outer tube 4, the second cavity of described connector 7
72 is connected with the near-end of inner tube 3.For example with medical grade glue by the first cavity 71 and the second cavity 72 with
Inner and outer pipe is connected.Similarly, when medical grade glue is bonding, can use 365nm mercury lamp, ultraviolet lighting is strong
Degree is more than or equal to 50mW/cm2, the time is between 10s～900s.
Holding above-mentioned, the guiding catheter that this utility model provides is particularly suited for interventional medical device before implantation
Passage build, various closure in described interventional medical device e.g. arteria coronaria sacculus, coronary artery bracket, heart
Device etc..
In sum, guiding catheter provided by the utility model, on the one hand by the inner tube of inside and outside socket with
Outer tube, enhances the structural strength of guiding catheter, then when implementing et al. Ke art, it is simple to push smoothly
Guiding catheter, improves the implantable of guiding catheter, and the opposing party is by arranging expandable ball on outer tube
Capsule, described sacculus can by the through hole being arranged on outer tube and formed between the inner and outer pipe sections with institute
State through hole connection cavity as full passage, thus under B ultrasonic environment, by means of being passed through gas or liquid
The developability of sacculus, facilitate patient that the propelling movement process of guiding catheter is positioned or diagnosed, thus promote
Guiding catheter development capability under B ultrasonic, also improve the stationkeeping ability of guiding catheter, it is to avoid X penetrates
Line is to patient and the injury of patient.
Additionally, the quantity of through hole of the present utility model is multiple, and along the axially spaced-apart distribution of described outer tube,
And/or, the radial symmetric along described outer tube is distributed, and so can promote filling pressure so that described sacculus can
To expand rapidly.It addition, outer tube of the present utility model uses braiding tubing, so improve the structure of outer tube
Intensity, when the sacculus being possible to prevent under swelling state shrinks, outer tube collapses on inner pipe, causes described sacculus
Shrink and slowly even cannot shrink, thus extend operating time, cause operative failure.
Further, sacculus of the present utility model uses multiple material to be mixed, or uses the sacculus of inside and outside external member
Body, so can promote the resilience of sacculus, and thus, before full or after filling, described sacculus will not be right
Guiding catheter impacts, and the sacculus that resilience is good, it is full and contraction speed is fast, full and contraction
Effective.
Foregoing description is only the description to this utility model preferred embodiment, not to this utility model scope
Any restriction, any change that the those of ordinary skill in this utility model field does according to the disclosure above content,
Modify, belong to the protection domain of claims.
Claims (17)
1. a guiding catheter, described guiding catheter positions for B ultrasonic, including a catheter body, its feature
It is, also includes a sacculus；Described catheter body include inner and outer tubes, said inner tube be arranged at described outside
Guan Zhong, described sacculus is arranged on described outer tube；A cavity it is formed with between said inner tube and outer tube, described
Cavity is passed through the liquid for B ultrasonic location or gas, described outer tube is provided with and described cavity and sacculus
The through hole of connection.
Guiding catheter the most according to claim 1, it is characterised in that the quantity of described through hole is one
Or it is multiple.
Guiding catheter the most according to claim 2, it is characterised in that multiple described through holes are along outside described
The axially spaced-apart distribution of pipe；And/or, multiple described through holes are distributed along the radial symmetric of described outer tube.
Guiding catheter the most according to claim 2, it is characterised in that described through hole be manhole or
Polygonal through hole.
Guiding catheter the most according to claim 1, it is characterised in that described outer tube and the coaxial cloth of inner tube
Put.
Guiding catheter the most as claimed in any of claims 1 to 5, it is characterised in that outside described
Pipe is braided tube.
Guiding catheter the most according to claim 2, it is characterised in that in multiple described through holes adjacent two
The spacing of individual through hole is equal.
Guiding catheter the most as claimed in any of claims 1 to 5, it is characterised in that described ball
Cuff is located on described outer tube；Or, described outer tube is positioned at the outside of described sacculus, at least the one of described sacculus
End is installed on described outer tube.
Guiding catheter the most as claimed in any of claims 1 to 5, it is characterised in that described ball
Capsule includes that main part and the two ends from described main part each extend over the left extension of formation and right extension
Section.
Guiding catheter the most as claimed in any of claims 1 to 5, it is characterised in that described
The area of through hole is 0.1～3.0mm2。
11. guiding catheters according to claim 1, it is characterised in that the material of described sacculus is heat
In plastic polyurethane, nylon, polyethylene, block polyetheramides and polyethylene terephthalate one
Plant or multiple.
12. guiding catheters as claimed in any of claims 1 to 5, it is characterised in that described
Sacculus includes the sacculus body of the inside and outside socket of N shell, and wherein, N is the positive integer between 2 to 30.
13. guiding catheters according to claim 12, it is characterised in that the material of the sacculus body of n-th layer
Matter hardness is less than the material hardness of the sacculus body of remainder layer, and the sacculus body of described n-th layer is positioned at outermost layer.
14. guiding catheters as claimed in any of claims 1 to 5, it is characterised in that described
Guiding catheter also includes that a connection piece, described connector are socketed in the near-end of described outer tube, and and said inner tube
Near-end connect, described connector has the first cavity and the second cavity, described first cavity and described cavity
Connection, described second cavity connects with the inside of said inner tube.
15. guiding catheters according to claim 14, it is characterised in that described guiding catheter also includes
One sheath, described sheath is socketed on outer tube, and be at least partly coated with described connector or with described connector
Far-end connect.
16. guiding catheters as claimed in any of claims 1 to 5, it is characterised in that swollen
Under swollen state, the maximum outside diameter of described sacculus is between 1.0mm～40.0mm.
17. guiding catheters as claimed in any of claims 1 to 5, it is characterised in that swollen
Under swollen state, described sacculus along the axial length of outer tube between 3.0mm～280.0mm.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201620064790.4U CN205515929U (en) | 2016-01-22 | 2016-01-22 | A guiding catheter |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201620064790.4U CN205515929U (en) | 2016-01-22 | 2016-01-22 | A guiding catheter |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN205515929U true CN205515929U (en) | 2016-08-31 |
Family
ID=56767767
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201620064790.4U Active CN205515929U (en) | 2016-01-22 | 2016-01-22 | A guiding catheter |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN205515929U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107485466A (en) * | 2017-09-21 | 2017-12-19 | 铜仁市恒睿生产力促进中心有限公司 | A kind of local deformation expands formula catheter sheath and intervention apparatus conveying device |
-
2016
- 2016-01-22 CN CN201620064790.4U patent/CN205515929U/en active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107485466A (en) * | 2017-09-21 | 2017-12-19 | 铜仁市恒睿生产力促进中心有限公司 | A kind of local deformation expands formula catheter sheath and intervention apparatus conveying device |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN106994203A (en) | Guiding catheter and preparation method thereof | |
| JP7312178B2 (en) | Cardiac annuloplasty and pacing procedures, related devices and methods | |
| CN106794064B (en) | Prothesis implant body conveying device | |
| CN102202718B (en) | Apparatus and method for capsule formation in tissue | |
| CN102125471B (en) | Heart valve delivery system with valve catheter | |
| JP6499171B2 (en) | Method for automatic centering of a guide catheter | |
| CN105473106B (en) | Implant system, implant and method through the apex of the heart | |
| CN102469992B (en) | For carrying and transmit the device of the not saturating composition of provisional radiation | |
| CN101415377B (en) | Delivery system and method for self-centering a proximal end of a stent graft | |
| JP2019141712A (en) | Personalized aortic valve prosthesis | |
| CN106714734A (en) | Dual-flange prosthetic valve frame | |
| BR112013005665B1 (en) | PROSTHETIC HEART VALVE AND PROSTHETIC HEART VALVE SYSTEM | |
| CN108348321A (en) | Heart valve | |
| CN102223910A (en) | Apparatus and method for in situ expansion of prosthetic device | |
| CN102159157A (en) | Delivery system for deployment of medical devices | |
| EP2523720A2 (en) | Device system and method for reshaping tissue openings | |
| WO2018072432A1 (en) | Luminal stent | |
| WO2014080339A1 (en) | Prosthetic system for heart valve replacement | |
| CN107530161A (en) | Personalized prosthese and dispositions method | |
| CN207627725U (en) | A kind of double-layered balloon catheter for expanding aorta petal | |
| CN205515929U (en) | A guiding catheter | |
| CN108211089A (en) | Across valve device and its application method | |
| CN208626393U (en) | Across valve device | |
| US20210045879A1 (en) | Cardiac annuloplasty procedures, related devices and methods | |
| CN106422032A (en) | Balloon catheter for vertebral expansion and preparation method of balloon catheter for vertebral expansion |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant |