CN107736884B - Intravascular pressure with supporting mechanism measures conduit - Google Patents
Intravascular pressure with supporting mechanism measures conduit Download PDFInfo
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- CN107736884B CN107736884B CN201710980696.2A CN201710980696A CN107736884B CN 107736884 B CN107736884 B CN 107736884B CN 201710980696 A CN201710980696 A CN 201710980696A CN 107736884 B CN107736884 B CN 107736884B
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- inner tube
- distal portions
- pressure
- proximal part
- conduit
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- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61B—DIAGNOSIS; SURGERY; IDENTIFICATION
- A61B5/00—Measuring for diagnostic purposes; Identification of persons
- A61B5/02—Detecting, measuring or recording pulse, heart rate, blood pressure or blood flow; Combined pulse/heart-rate/blood pressure determination; Evaluating a cardiovascular condition not otherwise provided for, e.g. using combinations of techniques provided for in this group with electrocardiography or electroauscultation; Heart catheters for measuring blood pressure
- A61B5/021—Measuring pressure in heart or blood vessels
- A61B5/0215—Measuring pressure in heart or blood vessels by means inserted into the body
-
- 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
- A61M25/0043—Catheters; Hollow probes characterised by structural features
- A61M25/005—Catheters; Hollow probes characterised by structural features with embedded materials for reinforcement, e.g. wires, coils, braids
-
- 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
- A61M2025/0001—Catheters; Hollow probes for pressure measurement
- A61M2025/0002—Catheters; Hollow probes for pressure measurement with a pressure sensor at the distal end
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- Cardiology (AREA)
- Engineering & Computer Science (AREA)
- Biomedical Technology (AREA)
- Heart & Thoracic Surgery (AREA)
- Veterinary Medicine (AREA)
- Animal Behavior & Ethology (AREA)
- General Health & Medical Sciences (AREA)
- Anesthesiology (AREA)
- Hematology (AREA)
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- Molecular Biology (AREA)
- Surgery (AREA)
- Measuring Pulse, Heart Rate, Blood Pressure Or Blood Flow (AREA)
Abstract
The present invention provides a kind of intravascular pressure measurements with supporting mechanism to lead comprising：Distal portions have the inner tube slideably received within individual medical guiding wire；Proximal part is connect with the distal portions；Pressure sensor is used to measure endovascular blood pressure；And supporting mechanism, there is the extension for being arranged in the base portion of the proximal part and being extended to along the length direction of the proximal part from the base portion distal portions, the extension to be attached to the outer wall of said inner tube and support said inner tube.In the present invention, which measures conduit and provides support to inner tube by the extension of support construction, so as to improve the resistant to bending intensity for being located at the inner tube from distal portions at proximal part, enhances the push ability that intravascular pressure measures conduit.
Description
Technical field
The present invention relates to a kind of intravascular pressures to measure conduit, more particularly to a kind of intravascular pressure with supporting mechanism
Measure conduit.
Background technology
Diagnosis for coronary disease arteriarctia, generally use coronarography or the method for intravascular ultrasound in the industry,
But both methods is only capable of carrying out lesion stenosis the judgement of iconography at present, and can not determine narrow for blood flow generation
Influence.Accurately judge whether to need that patients with coronary heart disease is implemented to be situated between moreover, the judgement of above-mentioned iconography can do nothing to help doctor
Enter treatment (such as angioplasty or placement coronary stent), it is likely that excess processes is caused not need the disease of interventional treatment
Become.
In recent years, a kind of by calculating blood flow reserve score (Fractional Flow Reserve, hereinafter referred to as FFR)
To evaluate whether to need to implement patient the method for interventional treatment, long-term clinical research verification, and FFR values are had already been through
Have become it is generally acknowledged can accurate judgement whether need to implement patient the important indicator of interventional treatment.FFR values are defined as narrow
The ratio of narrow endarterial maximum blood flow and normal maximum blood flow.It intravascular given narrow (is possible to place blood to calculate
The position of pipe holder) FFR values, need to measure and acquire respectively narrow distal side (for example, narrow downstream, far from actively
Arteries and veins) and narrow proximal lateral (such as narrow upstream, close to aorta) blood pressure readings.Clinical research shows that narrowness is got over
Height, FFR values are lower, and whether FFR values, which are less than assessed value (such as 0.8), to be based on the standard as useful criterion
Doctor can determine whether implement interventional treatment to such patient.
Currently, it is the pressure-sensing for having fast exchange (RX) mouth that doctor, which more commonly measures one of the device of FFR values,
Conduit.The distal portions of this pressure-sensing conduit have the inner cavity for connecting seal wire, by the way that distal portions are loaded on seal wire, by
This can will be moved to precalculated position along seal wire on pressure measurement conduits.By the way that pressure-sensing conduit is passed through at stenotic lesion
Distal side and proximal lateral, and record distal end blood pressure and proximal end blood pressure respectively.Thereby, it is possible to calculate narrow FFR values.
However, for such pressure-sensing conduit, the inner cavity for being located at distal portions needs to be provided enough by proximal part
Push power so that distal portions can be moved to precalculated position along seal wire.In pressure-sensing conduit in the blood vessels along leading
(especially pass through at stenotic lesion or coronarius complex-shaped and there is more anfractuose portion during silk is mobile
Timesharing), if being likely to occur positioned at from distal portions to the insufficient strength of the inner cavity of proximal part junction, at this excessive
Ground is bent so that inner cavity can not be continued to move to along seal wire, and distal portions can not be pushed to pre-determined bit so as to cause proximal part
Set the measurement for carrying out FFR values.
Invention content
The present invention completes in view of the situation of the above-mentioned prior art, and its purpose is to provide one kind capable of enhancing distal portion
The intravascular pressure with supporting mechanism of push ability is divided to measure conduit.
For this purpose, the present invention provides a kind of, the intravascular pressure with supporting mechanism measures conduit comprising：Distal portion
Point, there is the inner tube slideably received within individual medical guiding wire；Proximal part is connect with the distal portions；Pressure
Sensor is used to measure endovascular blood pressure；And supporting mechanism, have be arranged the proximal part base portion, with
And the extension of the distal portions is extended to along the length direction of the proximal part from the base portion, the extension is attached
It the outer wall in said inner tube and supports said inner tube.
In the present invention, in the blood vessels in pressure measurement conduits, support is provided to inner tube by the extension of support construction,
So as to improve the resistant to bending intensity for being located at the inner tube from distal portions at proximal part, intravascular pressure survey is enhanced
Measure the push ability of conduit.
In addition, in intravascular pressure according to the present invention measures conduit, optionally, further include at least cover it is described remote
The outer tube of end part, the extension extend between the outer tube and said inner tube.In such a case, it is possible to pass through outer tube
Extension is coated, supporting role of the supporting mechanism to distal portions is thus improved.
In addition, in intravascular pressure according to the present invention measures conduit, optionally, in the tube wall of the outer tube, if
It is equipped with the side opening of corresponding said inner tube, to which said inner tube and the side opening penetrate through.Medical guiding wire can be from outer tube as a result,
Tube wall side opening stretch out so that distal portions can be for example connected with proximal part in a manner of almost coaxial.
In such a case, it is possible to which effectively reducing intravascular pressure measures conduit whole (especially distal portions and proximal part
Junction) cross-sectional area, moved in the blood vessels consequently facilitating intravascular pressure measures conduit, and can be by intravascular pressure
Conduit is measured to send to narrower blood vessel.
In addition, in intravascular pressure according to the present invention measures conduit, optionally, said inner tube includes being connected
Main paragraph and bending section, the extension are at least attached to the part that the main paragraph is connected with the bending section.This
In the case of, extension can be to the offer support force of main paragraph and bending section coupling part, and then improves main paragraph and bending section
The flexural strength of coupling part.
In addition, in intravascular pressure according to the present invention measures conduit, optionally, the extension is to be attached to
The shape for stating the outer wall of inner tube is tapered from the proximal part towards the distal portions.In this case, extension
It is in gradually-reducing shape, it is possible to reduce one section of the overall cross sectional area with extension support inner tube of distal portions, thus can either
Support is provided to inner tube, additionally it is possible to be reduced intravascular pressure and be measured the resistance that conduit pushes in the blood vessels.
In addition, in intravascular pressure according to the present invention measures conduit, optionally, the base portion is in a tubular form, described
Extension is by the way that the base portion is chamfer the base portion along the angle direction for forming acute angle with the center line of the base portion
A part and formed.In such a case, it is possible to which extension is made to be in gradually-reducing shape extension.
In addition, in intravascular pressure according to the present invention measures conduit, optionally, the supporting mechanism is by being selected from not
Rust steel, copper, aluminium alloy or hard engineering plastic at least one of are worked as material and are constituted.
In addition, in intravascular pressure according to the present invention measures conduit, optionally, the pressure sensor is set to
The outer wall of said inner tube, the blood pressure signal measured by the pressure sensor are transmitted by conducting wire, and the conducting wire is by described interior
Extend along the proximal part between pipe and the outer tube.In this case, the letter of connection pressure sensor can be made
It number is reliably sent out by conducting wire.
In addition, in intravascular pressure according to the present invention measures conduit, optionally, the outer tube also covers described remote
The part that end part is connect with the proximal part.Outer tube can play the work of the connection to distal portions and proximal part as a result,
With.
In addition, in intravascular pressure according to the present invention measures conduit, optionally, in said inner tube and the support
Strengthening mechanism is additionally provided between mechanism.Strengthening mechanism further can provide support force to inner tube as a result,.
In accordance with the invention it is possible to provide a kind of intravascular pressure measurement conduit with supporting mechanism.The intravascular pressure
It measures conduit and provides support to inner tube by the extension of support construction, be located at from distal portions to close end so as to improve
Respectively inner tube resistant to bending intensity, enhance intravascular pressure measure conduit push ability.
Description of the drawings
Fig. 1 shows that the intravascular pressure with support construction involved by embodiments of the present invention measures the vertical of conduit
Body structural schematic diagram；
Fig. 2 is to show that the intravascular pressure that embodiments of the present invention are related to measures the heart of intubation intervention into the human body
The schematic diagram at position；
Fig. 3 shows that the intravascular pressure with support construction involved by embodiments of the present invention measures the edge of conduit
The sectional view of length direction；
Fig. 4 shows that the distal portions of the measurement conduit of the intravascular pressure involved by embodiments of the present invention have connected doctor
With the sectional view of seal wire；
Fig. 5 shows that the distal portions of intravascular pressure measurement conduit shown in Fig. 3 are locally put with proximal part junction
Big schematic diagram；
Fig. 6 shows that the part of the supporting mechanism of the measurement conduit of the intravascular pressure involved by embodiments of the present invention is put
Big schematic diagram；
Fig. 7 shows that the part of the supporting mechanism of the measurement conduit of the intravascular pressure involved by embodiments of the present invention is vertical
Body structural schematic diagram；And
Fig. 8 shows that the intravascular pressure involved by embodiments of the present invention measures the supporting mechanism of conduit in distal portion
Divide the dimensional structure diagram with proximal part junction.
Primary symbols explanation：
1 ... blood pressure measurement conduit, 10 ... distal portions, 11 ... inner tubes, 20 ... proximal parts, 30 ... pressure sensors,
40 ... supporting mechanisms, 41 ... base portions, 42 ... extensions, 50 ... outer tubes, 60 ... strengthening mechanisms, 70 ... medical guiding wires.
Specific implementation mode
Although being illustrated to the present invention above in association with drawings and examples, it will be appreciated that above description
The invention is not limited in any way.Those skilled in the art without departing from the true spirit and scope of the present invention may be used
To deform and change to the present invention as needed, these deformations and variation are within the scope of the present invention.
It should be noted that the term " comprising " and " having " in the present invention and their any deformation, such as wrapped
Include or possessed series of steps or the process of unit, method, system, product or equipment are not necessarily limited to clearly to list that
A little steps or unit, but may include or with not listing clearly or for these processes, method, product or equipment
Intrinsic other steps or unit.
In addition, the subhead etc. below the present invention involved in description be not meant to limit the present invention in perhaps model
It encloses, is merely possible to the suggesting effect read.Such subhead can neither be interpreted as the content for dividing article, also not
Content under subhead should be limited only in the range of subhead.
Fig. 1 shows that the intravascular pressure with support construction involved by embodiments of the present invention measures the vertical of conduit
Body structural schematic diagram.Fig. 2 is to show that the intravascular pressure that embodiments of the present invention are related to measures intubation intervention into the human body
Cardia schematic diagram.Fig. 3 shows the intravascular pressure with support construction involved by embodiments of the present invention
Measure the sectional view alongst of conduit.Fig. 4 shows that the intravascular pressure involved by embodiments of the present invention is surveyed
The distal portions of amount conduit connect the sectional view of medical guiding wire.For the ease of clearly indicating, the possibility that has in above-mentioned diagram
A part for proximal part is illustrated only, a part for distal portions is omitted in some possibility.
In the present embodiment, as shown in Figure 1, intravascular pressure measures (hereinafter referred to as " the blood pressure measurement conduit of conduit 1
1 ") include mainly distal portions 10, the proximal part 20 being connect with distal portions 10 and the pressure for measuring intravascular blood pressure
Sensor 30 (referring to Fig. 2).
In the present embodiment, blood pressure measurement conduit 1 can be pushed to patient via such as femoral artery or arteria brachialis
In vivo.Specifically, distal portions 10 can connect medical guiding wire 2 (referring to Fig. 1), doctor is by manipulating blood pressure measurement conduit 1
Proximal part 20, distal portions 10 can be slided along medical guiding wire 2 toward the direction of arrow A, and push to precalculated position
Such as close to stenosis for example coronarius, and the blood pressure of the measurement of pressure sensor 30 stenosis is utilized, such as narrow
Distal side (for example, narrow downstream, far from aorta) and narrow proximal lateral (such as narrow upstream, close aorta)
Blood pressure readings.In addition, one end of the separate distal portions 10 of proximal part 20 can be external with patient external monitoring devices etc.
Connection.The blood pressure signal measured by pressure sensor 30 can be sent to monitoring device or other processing equipments for example calculate
Machine terminal, monitoring device or other processing equipments, which can show and store, is computed the obtained FFR values of blood pressure signal, after being
Continuous interventional treatment provides reference.
(distal portions)
In the present embodiment, the shape of distal portions 10 is not particularly limited, cylindrical shape that can be substantially in extension of shape,
Rectangular tubular, oval tubular that can also be in extension of shape etc..In some instances, from easy to process and be conducive in the blood vessels
From the viewpoint of movement, distal portions 10 are preferably cylindrical.
In addition, in the present embodiment, the length of distal portions 10 is not particularly limited.In some instances, distal portion
10 length is divided for example to can be about 5cm~30cm, as long as can ensure that distal portions 10 easily connect medical guiding wire 2 i.e.
It can.
In the present embodiment, as shown in figures 1 and 3, distal portions 10 have leads slideably received within individually medical
The inner tube (also referred to as " seal wire inner tube ") 11 of silk 2.In this case, inner tube 11 can connect medical guiding wire 2, by push with
Proximal part that distal portions 10 connect and and distal portions 10 are pushed into (such as the lesion of the precalculated position in patient vessel
Place).
In addition, in the present embodiment, as shown in figure 3, inner tube 11 can have main paragraph 111 and connect with main paragraph 111
Logical bending section 112.Main paragraph 111 is connected to bending section 112 and forms lumen therethrough, it is possible thereby to receive individual medical guiding wire
2.In addition, inner tube 11 can have front port 11a and opening 11b, medical guiding wire 2 can be via front port 11a or opening as a result,
11b and be threaded in inner tube 11.
In addition, main paragraph 111 can extend along the length direction of distal portions 10.In some instances, work as distal portion
When dividing 10 to have cylindric, the axis direction of main paragraph 111 is substantially parallel with the axis direction of distal portions 10.As a result, remote
When end part 10 is promoted along medical guiding wire 2, it can be ensured that the main paragraph 111 and the moving direction of distal portions 10 of inner tube 11 are big
Body is consistent.
In addition, in the present embodiment, as shown in Figure 3 and Figure 4, the bending section 112 of inner tube 11 is in bending.In other words,
The end (namely opening 11b of inner tube 11) of bending section 112 is opened wide towards the side of inner tube 11.In this case, medical to lead
Silk 2 can for example enter from the front port 11a of the inner tube 11 of distal portions 10, be stretched out from opening 11b, and thus, it is possible to by distal portion
Divide 10 to be limited on medical guiding wire 2 and carry out push operation, and forms fast exchange mouth.
Fig. 5 shows that the distal portions of intravascular pressure measurement conduit shown in Fig. 3 are locally put with proximal part junction
Big schematic diagram.
In some instances, main paragraph 111 can dock or overlap with bending section 112.In other examples
In, main paragraph 111 can be integrally formed with bending section 112.In addition, the center of the center line L1 and main paragraph 111 of bending section 112
Line L2 can form defined angle, θ (referring to Fig. 5).In some instances, the center line L1 of bending section 112 and main paragraph 111
Center line L2 be formed by predetermined angular θ can be 110 ° to 170 °, it is preferable that predetermined angular θ be 130 ° to 150 °, at this
In the case of kind, distal cannula 10 can more easily connect medical guiding wire 2.
In the present embodiment, it as described above, medical guiding wire 2 can enter from the front port 11a of inner tube 11, and wears successively
Main paragraph 111 and bending section 112 are crossed, and is stretched out from opening 11b.In addition, present embodiment is without being limited thereto, in some instances,
Medical guiding wire 2 can also enter inner tube 11 from opening 11b, and be stretched out from front port 11a.
It in the present embodiment, can be by the pact of bending section 112 when medical guiding wire 2 can be relatively moved along inner tube 11
Beam, moving direction can occur to change accordingly.Thereby, it is possible to inhibit the end of medical guiding wire 2 to distal portions 10 or proximal end
The damage of part 20.
In addition, although including main paragraph 111 and bending section 112 described above is inner tube 11, present embodiment is simultaneously unlimited
In this.For example, in some instances, such as inner tube 11 can be cylindrical, in this case, inner tube 11 can only include upper
The main paragraph 111 stated, and main paragraph 111 is cylindrical.At this point, distal portions 10 can not also be with continuous with proximal part 20
Mode for example connect (not shown) in such a way that position is staggered.In this case, medical guiding wire 2 can be from inner tube 11 (i.e.
Main paragraph 111) one end enter, and directly stretched out from the other end of main paragraph 111.
In the present embodiment, medical guiding wire 2 is not particularly limited, such as medical guiding wire 2 can use in intervention operation
Common seal wire.In some instances, the diameter of medical guiding wire 2 is, for example, 0.1mm~0.6mm, and typical or the medical of standard is led
The diameter of silk 2 is such as having 0.36mm (0.014 inch), 0.40mm (0.016 inch), 0.64mm (0.025 inch).
In addition, the internal diameter of the guidewire lumen 11 of distal cannula 10 is slightly larger than the outer diameter of medical guiding wire 2, in this case,
Doctor etc. can easily select various sizes of medical guiding wire 2, as long as can ensure that the outer diameter of the medical guiding wire 2 is less than seal wire
The internal diameter of inner cavity 11.Thus, on the one hand, when using such medical guiding wire 2, distal cannula 10 can be facilitated to connect doctor
With seal wire 2, and make medical guiding wire 2 relative movement or opposite sliding in the guidewire lumen 11 of distal cannula 10, on the other hand
Also it can inhibit the increase of the cross-sectional area (the especially cross-sectional area of distal cannula 10) of blood pressure measurement conduit 1.In addition, in order to
Medical guiding wire 2 is set to move or slide in the guidewire lumen 11 of distal cannula 10, it is preferable to use smooth interior tables for guidewire lumen 11
Face.
In addition, in some instances, the guidewire lumen 11 for connecting medical guiding wire 2 can be only arranged at distal cannula
10.That is, guidewire lumen 11 is only limited in distal cannula 10, it is separated by with proximal part 20.In this case, due to reception
The guidewire lumen 11 of medical guiding wire 2 is only arranged at distal cannula 10, when medical guiding wire 2 is connected blood pressure measurement conduit 1, only
Distal cannula 10 connects on medical guiding wire 2, and thus, it is possible to easy to use or replace different types of medical guiding wire 2.
In addition, distal cannula 10 and the connecting mode of proximal part 20 are not particularly limited, such as distal cannula 10 can be with
Coupled by bonding way with proximal part 20, can also be coupled by connector such as casing.
In addition, in the present embodiment, distal portions 10 can be connected in coaxial fashion with proximal part 20, and
Outer tube 50 can also cover the part that distal portions 10 are connect with proximal part 20.That is, outer tube 50 is by distal portions 10 and closely
End part 20 connects.In some instances, distal portions 10 and close end can closely be covered using the thermoplasticity of outer tube 50
Divide the parts of 20 connections.Thus, it is possible to which distal portions 10 is made to link into an integrated entity with proximal part 20.
In addition, as described above, distal cannula 10 can connect with proximal part 20 in such a way that outer surface is continuous, it can also
For example staggered positions do not connect in a continuous manner.In some instances, distal cannula 10 can be with proximal part 20 in blood pressure
Measure the part that there is overlapping on the length direction of conduit 1.In other examples, distal cannula 10 can be with proximal part 20
It is separated from each other and is coupled by connecting sleeve.
In addition, in some instances, the inner tube 11 of distal portions 10 can be preferably soft material, such soft material
Such as can be polyimides (PI), polyester or nylon etc..In this case, in distal portions 10 by having bending multiple
Miscellaneous blood vessel and when inevitably touching blood vessel, can adapt to the shape of blood vessel and generate deformation, to inhibit distal portions 10 right
The damage of blood vessel.
In addition, in some instances, different materials may be used in main paragraph 111 and bending section 112.Such as main paragraph 111
Polyimides (PI) or polyester may be used, nylon may be used in bending section 112.In this case, since nylon material has
There is good thermoplasticity, it is required shape to be easy thermoplastic shaping, such as is formed with forniciform bending section 112.In addition,
In some instances, bending section 112 can also select other thermoplastic materials.
(outer tube)
In the present embodiment, as shown in Figure 1 or 2, blood pressure measurement conduit 1 can also include outer tube 50.Outer tube 50 to
Distal portions 10 are covered less.Specifically, outer tube 50 at least coats inner tube 11.
In addition, outer tube 50 can use the thermoplastic material such as polyethylene terephthalate with biocompatibility
(Polyethylene Terephthalate, abbreviation PET) etc..Thus, it is possible to using in the thermoplastic tight cladding of outer tube 50
Pipe 11 makes distal portions 10 be protected.
In addition, in the present embodiment, as shown in figure 4, a part for the tube wall of inner tube 11 is closely coated by outer tube 50.
In some examples, outer tube 50 can mainly coat 111 corresponding tube wall of main paragraph.
In addition, in the present embodiment, in the tube wall of outer tube 50, the side opening of corresponding inner tube 11 is provided with, to inner tube
11 penetrate through with the side opening of outer tube 50.In other words, the bending section 112 of inner tube 11 can penetrate through the tube wall of outer tube 50.Show at some
In example, bending section 112 penetrates through the tube wall of outer tube 50 by side opening.Medical guiding wire 2 can be stretched from the tube wall of outer tube 50 as a result,
Go out.
In addition, in some instances, outer tube 50 can also include the first outer tube and the second outer tube (not shown).In this feelings
Under condition, the first outer tube can coat at least part of the main paragraph 111 of inner tube 11, and the second outer tube can at least coat distal portion
Divide 10 parts being connect with proximal part 20.In some instances, the second outer tube can coat main paragraph 111 and bending section 112
Coupling part, bending section 112 and proximal part 20 close to distal portions 10 a part.In addition, the first outer tube and second
Outer tube can have lap, such as a part for a part the first outer tube of covering of the second outer tube.
(pressure sensor)
In the present embodiment, as shown in figure 3, pressure sensor 30 can be set to distal portions 10.Specifically, pressure
Force snesor 30 can be set on the outer wall of inner tube 11, and can be coated by outer tube 50.In some instances, pressure sensing
Device 30 can be set to 111 corresponding outer wall of main paragraph.
In the present embodiment, pressure sensor 30 is arranged close to the end (i.e. the end of inner tube 11) of distal portions 10.
In such a case, it is possible to make pressure sensor 30 closer to the end of distal portions 10, so as to according to the position of the end
Set the position for carrying out substantially pressure sensors 30.
In the present embodiment, pressure sensor 30 can be resistive pressure sensor, capacitance pressure transducer, pressure
Electric-type pressure sensor, inductance pressure transducer, thermoelectric (al) type pressure sensor or photo-electric pressure sensor.In addition, one
In a little examples, pressure sensor 30 can be the pressure device using silicon as base material.In addition, in some instances, in order to inhibit to examine
Noise during survey, pressure sensor 30 can be differential type pressure sensor.
In the present embodiment, the blood pressure signal measured by pressure sensor 30 can be transmitted via conducting wire 31.Conducting wire 31
It can be electrically connected with pressure sensor 30 by welding.In addition, conducting wire 31 can be between inner tube 11 and outer tube 50 along proximal end
Part 20 extends.Specifically, conducting wire 31 can be drawn from pressure sensor 30, and along between inner tube 11 and outer tube 50 and attached
The outer wall extension in inner tube 11, and extends into the inside of proximal part 20.Conducting wire 31 can be along in proximal part 20
It is external that portion extends to patient.
(proximal part)
In the present embodiment, as shown in figure 4, proximal part 20 may include proximal end outer tube 21.In some instances, closely
End outer tube 21 can be made of materials such as polyimides (PI), polyester or nylon.In the present embodiment, proximal part 20
Shape is not particularly limited, cylindrical shape that can be in extension of shape, rectangular tubular, oval tubular that can also be in extension of shape etc..
In the present embodiment, from easy to process and be conducive to from the viewpoint of moving in the blood vessels, proximal part 20 is preferably cylindrical.
In addition, the length of proximal part 20 is not particularly limited, as long as ensuring that the length of proximal part 20 can be from patient
The precalculated position (such as affected area) of (such as vein, artery) extends to the external monitoring device etc. of patient in vivo.One
In a little examples, the length of proximal part 20 is about 60cm to 150cm.
In some instances, outer tube 50 can coat the parts of the close distal portions 10 of proximal end outer tube 21 and (not scheme
Show).In addition, in other examples, outer tube 50 can also be integrally formed with proximal end outer tube 21.
In the present embodiment, proximal part 20 can also include the protection pipe 22 being arranged in proximal end outer tube 21.One
In a little examples, protection pipe 22 can be made of materials such as polyimides (PI), polyester or nylon.
In the present embodiment, the above-mentioned conducting wire 31 for transmitting blood pressure signal drawn from pressure sensor 30 can edge
The internal stretch of protection pipe 22.Thereby, it is possible to effectively inhibit being in direct contact for conducting wire 31 and vascular tissue's liquid, to protect
Conducting wire 31 and the stability for improving the blood pressure signal transmitted along conducting wire 31.
In addition, conducting wire 31 can be for example pasted on by mode for dispensing glue in protection pipe 22.Protection pipe 22 can limit as a result,
The movement of conducting wire 31 processed prevents conducting wire 31 to be electrically connected with pressure sensor 30 moved with blood pressure measurement conduit 1 during
Poor contact or interruption.
(supporting mechanism)
Fig. 6 shows that the part of the supporting mechanism of the measurement conduit of the intravascular pressure involved by embodiments of the present invention is put
Big schematic diagram.Fig. 7 shows that the intravascular pressure involved by embodiments of the present invention measures the part of the supporting mechanism of conduit
Dimensional structure diagram.Fig. 8 shows that the intravascular pressure involved by embodiments of the present invention measures the supporting mechanism of conduit
In the dimensional structure diagram of distal portions and proximal part junction.In fig. 8, for the ease of indicate, eliminate outer tube and
Show the inner tube of distal cannula 10 and the protection pipe 22 of proximal sleeve 20.
In the present embodiment, as shown in fig. 6, supporting mechanism 40 can have be arranged proximal part base portion 41, with
And the extension 42 of distal portions 10 is extended to along the length direction of proximal part 20 from base portion 41.In other words, supporting mechanism
40 base portion 41 can be set to proximal part 20, and the remainder (extension 42) of supporting mechanism 40 is at least set to distal portion
Divide the coupling part of 10 and proximal part 20.In addition, extension 42 can be attached to the outer wall of inner tube 11 and support inner tube 11.
In this case, the setting of base portion 41 of supporting mechanism 40 extends to distal end in proximal part 20 and extension 42
Part, and extension 42 is attached to the outer wall of inner tube 11 and supports inner tube 11, and therefore, supporting mechanism 40 can effectively act as
Supporting role to inner tube 11.In addition, supporting mechanism 40 can also improve the bending resistance of inner tube 11 so that inner tube 11 has
Enough intensity bears the push power from proximal part 20, and then enhances the push ability of distal portions 10 in the blood vessels.
In the present embodiment, the base portion 41 of supporting mechanism 40 can also be arranged in the inside of proximal end outer tube 21, can be with
It is coated on the outer surface of the protection pipe 22 of proximal part 20 in an orbiting manner.In addition, in some instances, supporting mechanism 40 can
To be made of stainless steel, copper, aluminium alloy or hard engineering plastic.
In the present embodiment, base portion 41 can be in a tubular form.In addition, in some instances, base portion 41 can be by stainless steel
Hypotube is constituted.In addition, as shown in fig. 7, in supporting mechanism 40, extension 42 can be by by base portion 41 along with base portion
41 center line forms a part for the angle direction miter base 41 of acute angle and is formed.In other words, extension 42 be through
A part for miter base 41 and formed.
In the present embodiment, the section of extension 42 can be in arcuation (referring to Fig. 7).In this case, extension
42 can match to fit in the outer wall of inner tube 11 with the shape of inner tube 11.In some instances, extension 42 can be with attached
Proximally 20 toward distal portion 10 of part is tapered for the shape in the outer wall of inner tube 11.In this case, extension 42 both may be used
To provide support to inner tube 11, and since extension 42 is in gradually-reducing shape, it is possible to reduce distal portions 10 have extension 42
One section of overall cross sectional area of inner tube 11 is supportted, thus the resistance that blood pressure measurement conduit 1 pushes in the blood vessels can be reduced.
In the present embodiment, as shown in fig. 6, being also provided with strengthening mechanism between inner tube 11 and supporting mechanism 40
60.Specifically, strengthening mechanism 60 can draw from supporting mechanism 40 and is attached to along the extending direction of distal portions 10 interior
The outer wall of pipe 11 extends.In the present embodiment, strengthening mechanism 60 can be drawn from 40 inside of supporting mechanism in a tubular form.One
In a little examples, strengthening mechanism 60 can also draw (not shown) from 40 side of supporting mechanism.
In addition, in some instances, strengthening mechanism 60 can be the core filaments of hard, such as wire.Strengthening mechanism 60 can
Extended with being in gradually-reducing shape with the extending direction along distal portions 10.In addition, strengthening mechanism 60 can be along the outer wall of inner tube 11
The length of extension is more than the length that extension 42 extends along the outer wall of inner tube 11, such as can extend close to pressure sensor
30 position.
In this case, strengthening mechanism 60 can not only increase the flexural strength of distal portions 10, but also due to adding
Gu mechanism 60 is in gradually-reducing shape so that the hardness of distal portions 10 is gradually changed along the extending direction of distal portions 10, Jin Erke
So that pressure sensor 30 adapts to more complicated blood vessel structure.In addition, in some instances, strengthening mechanism 60 can pass through weldering
It connects or pastes and fixed with supporting mechanism 40.
Although being illustrated to the present invention above in association with drawings and embodiments, it is not intended to limit
The present invention, it should be understood that those skilled in the art, without departing from the spirit and scope of the present invention, can
To deform and change to the present invention, these deformations and change are each fallen in the scope of the claimed protection of the present invention.
Claims (8)
1. a kind of intravascular pressure with supporting mechanism measures conduit, which is characterized in that
Including：
Distal portions have the inner tube slideably received within individual medical guiding wire；
Proximal part is connect with the distal portions；
Pressure sensor is used to measure endovascular blood pressure；And
Supporting mechanism, have be arranged the base portion of the proximal part and from the base portion along the proximal part
Length direction extends to the extension of the distal portions,
Wherein, the extension of the supporting mechanism is attached to the outer wall of said inner tube and supports said inner tube, the base portion
In a tubular form, and the extension be by by the base portion along the angle direction for forming acute angle with the center line of the base portion
It chamfers a part for the base portion and is formed.
2. intravascular pressure as described in claim 1 measures conduit, which is characterized in that
Further include the outer tube at least covering the distal portions,
The extension extends between the outer tube and said inner tube.
3. intravascular pressure as claimed in claim 2 measures conduit, which is characterized in that
In the tube wall of the outer tube, it is provided with the side opening of corresponding said inner tube, to which said inner tube and the side opening penetrate through.
4. intravascular pressure as claimed in claim 3 measures conduit, which is characterized in that
Said inner tube includes the main paragraph and bending section being connected,
The extension is at least attached to the part that the main paragraph is connected with the bending section.
5. intravascular pressure as described in claim 1 measures conduit, which is characterized in that
The supporting mechanism at least one of is worked as material by being selected from stainless steel, copper, aluminium alloy or hard engineering plastic and is constituted.
6. intravascular pressure as claimed in claim 2 measures conduit, which is characterized in that
The pressure sensor is set to the outer wall of said inner tube,
The blood pressure signal measured by the pressure sensor is transmitted via conducting wire, the conducting wire said inner tube and the outer tube it
Between along the proximal part extend.
7. intravascular pressure as claimed in claim 2 measures conduit, which is characterized in that
The outer tube also covers the part that the distal portions are connect with the proximal part.
8. intravascular pressure as described in claim 1 measures conduit, which is characterized in that
It is additionally provided with strengthening mechanism between said inner tube and the supporting mechanism.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710980696.2A CN107736884B (en) | 2017-10-19 | 2017-10-19 | Intravascular pressure with supporting mechanism measures conduit |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710980696.2A CN107736884B (en) | 2017-10-19 | 2017-10-19 | Intravascular pressure with supporting mechanism measures conduit |
Publications (2)
| Publication Number | Publication Date |
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| CN107736884A CN107736884A (en) | 2018-02-27 |
| CN107736884B true CN107736884B (en) | 2018-10-12 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN201710980696.2A Active CN107736884B (en) | 2017-10-19 | 2017-10-19 | Intravascular pressure with supporting mechanism measures conduit |
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Families Citing this family (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108853691A (en) * | 2018-05-15 | 2018-11-23 | 因诺唯特（武汉）科技有限公司 | A kind of central venous catheter |
| CN209136594U (en) * | 2018-11-05 | 2019-07-23 | 苏州润迈德医疗科技有限公司 | New catheter for invasive angiosthenia monitoring |
| CN117582192A (en) * | 2019-08-02 | 2024-02-23 | 深圳北芯生命科技股份有限公司 | Pressure measuring catheter |
| WO2021223248A1 (en) * | 2020-05-08 | 2021-11-11 | 深圳北芯生命科技股份有限公司 | System and method for tracking cardiac circulatory event by using blood pressure |
| CN113181514A (en) * | 2021-03-26 | 2021-07-30 | 杭州未名信科科技有限公司 | Implantable catheter, method of use and method of making the same |
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| CN107736884A (en) | 2018-02-27 |
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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 ) |
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