CN107736884A - Intravascular pressure measurement conduit with supporting mechanism - Google Patents
Intravascular pressure measurement conduit with supporting mechanism Download PDFInfo
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- CN107736884A CN107736884A CN201710980696.2A CN201710980696A CN107736884A CN 107736884 A CN107736884 A CN 107736884A CN 201710980696 A CN201710980696 A CN 201710980696A CN 107736884 A CN107736884 A CN 107736884A
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- inner tube
- distal portions
- extension
- proximal part
- intravascular pressure
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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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- Engineering & Computer Science (AREA)
- Biomedical Technology (AREA)
- Heart & Thoracic Surgery (AREA)
- Veterinary Medicine (AREA)
- Animal Behavior & Ethology (AREA)
- General Health & Medical Sciences (AREA)
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- Surgery (AREA)
- Measuring Pulse, Heart Rate, Blood Pressure Or Blood Flow (AREA)
Abstract
The invention provides a kind of intravascular pressure measurement with supporting mechanism to lead, and it includes：Distal portions, it has the inner tube slideably received within single medical guiding wire；Proximal part, it is connected with the distal portions；Pressure sensor, it is used to measure endovascular blood pressure；And supporting mechanism, it, which has, is arranged on the base portion of the proximal part and extends to the extension of the distal portions along the length direction of the proximal part from the base portion, and the extension is attached to the outer wall of said inner tube and supports said inner tube.In the present invention, intravascular pressure measurement conduit provides support by the extension of supporting construction to inner tube, is located at so as to improve from distal portions to the resistant to bending intensity of the inner tube of close end office, enhances the push ability that intravascular pressure measures conduit.
Description
Technical field
The present invention relates to a kind of intravascular pressure 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 approaches are only capable of carrying out lesion stenosis at present the judgement of iconography, and can not determine narrow for blood flow generation
Influence.Judge whether to need that patients with coronary heart disease is implemented to be situated between exactly 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 cause excess processes not need the disease of PCI
Become.
In recent years, one kind is by calculating blood flow reserve fraction (Fractional Flow Reserve, hereinafter referred to as FFR)
To evaluate whether to need to implement patient the method for PCI, long-term clinical research checking, 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 PCI.FFR values are defined as narrow
The ratio of narrow endarterial maximum blood flow and normal maximum blood flow.Intravascular given narrow (it is possible to place blood to calculate
The position of pipe holder) FFR values, it is necessary to measure respectively and gather narrow distal side (for example, narrow downstream, away from actively
Arteries and veins) and narrow proximal lateral (such as narrow upstream, close to sustainer) blood pressure readings.Clinical research shows that narrowness is got over
Height, FFR values are lower, and whether FFR values can be as useful criterions, based on the standard less than assessed value (such as 0.8)
Doctor may decide that to whether such patient implements PCI.
At present, one of more conventional device of measurement FFR values of doctor is the pressure-sensing with fast exchange (RX) mouth
Conduit.The distal portions of this pressure-sensing conduit have the inner chamber 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 near-end blood pressure respectively.Thereby, it is possible to calculate narrow FFR values.
However, for such pressure-sensing conduit, need to be provided enough by proximal part positioned at the inner chamber of distal portions
Push power to enable distal portions to be moved to precalculated position along seal wire.In pressure-sensing conduit in the blood vessels along leading
During silk is mobile (at particularly by stenotic lesion, or it is coronarius complex-shaped and there is more anfractuose portion
Timesharing), it is likely to occur if located in the insufficient strength from distal portions to the inner chamber of proximal part junction, at this excessive
Ground is bent so that inner chamber can not continue to move to along seal wire, so as to cause proximal part can not push distal portions to pre-determined bit
Put the measurement for carrying out FFR values.
The content of the invention
The present invention completes in view of the situation of above-mentioned prior art, and its object is to provide one kind to strengthen distal portion
Divide the measurement conduit of the intravascular pressure with supporting mechanism of push ability.
Therefore, the invention provides a kind of intravascular pressure with supporting mechanism to measure conduit, it includes：Distal portion
Point, it has the inner tube slideably received within single medical guiding wire；Proximal part, it is connected with the distal portions；Pressure
Sensor, it is used to measure endovascular blood pressure；And supporting mechanism, its have be arranged on 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
The outer wall in said inner tube and support 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 supporting construction,
It is located at so as to improve from distal portions to the resistant to bending intensity of the inner tube of close end office, enhances intravascular pressure survey
Measure the push ability of conduit.
In addition, in intravascular pressure measurement conduit involved in the present invention, alternatively, in addition at least cover described remote
The outer tube of part is held, the extension extends between the outer tube and said inner tube.In such a case, it is possible to pass through outer tube
Extension is coated, thus improves supporting role of the supporting mechanism to distal portions.
In addition, in intravascular pressure measurement conduit involved in the present invention, alternatively, in the tube wall of the outer tube, if
The side opening of corresponding said inner tube is equipped with, so as to which said inner tube and the side opening penetrate.Thus, medical guiding wire can be from outer tube
Tube wall side opening stretch out, and then cause distal portions can be for example connected with proximal part in a manner of almost coaxial.
In such a case, it is possible to effectively reduce intravascular pressure measurement conduit overall (particularly distal portions and proximal part
Junction) cross-sectional area, and can be by intravascular pressure consequently facilitating intravascular pressure measurement conduit moves in the blood vessels
Measurement conduit delivers to narrower and small blood vessel.
In addition, in intravascular pressure measurement conduit involved in the present invention, alternatively, said inner tube includes what is be 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 main paragraph and the offer support force of bending section coupling part, and then improves main paragraph and bending section
The flexural strength of coupling part.
In addition, in intravascular pressure measurement conduit involved in the present invention, alternatively, 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
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 reduces the resistance that intravascular pressure measurement conduit pushes in the blood vessels.
In addition, in intravascular pressure measurement conduit involved in the present invention, alternatively, the base portion is in a tubular form, described
Extension is by the way that the base portion is chamfer into the base portion along the angle direction that acute angle is formed with the center line of the base portion
A part and formed.In such a case, it is possible to extension is set to extend in gradually-reducing shape.
In addition, in intravascular pressure measurement conduit involved in the present invention, alternatively, the supporting mechanism is not by selected from
Rust steel, copper, aluminium alloy or hard plastics at least one of are worked as material and formed.
In addition, in intravascular pressure measurement conduit involved in the present invention, alternatively, the pressure sensor is arranged at
The outer wall of said inner tube, the blood pressure signal measured by the pressure sensor are transmitted by wire, and the wire is by described interior
Extend between pipe and the outer tube along the proximal part.In this case, the letter of connection pressure sensor can be made
Number reliably sent out by wire.
In addition, in intravascular pressure measurement conduit involved in the present invention, alternatively, the outer tube also covers described remote
The part that end part is connected with the proximal part.Thus, the connection that outer tube can be played to distal portions and proximal part is made
With.
In addition, in intravascular pressure measurement conduit involved in the present invention, alternatively, in said inner tube and the support
Strengthening mechanism is additionally provided between mechanism.Thus, strengthening mechanism further can provide support force to inner tube.
In accordance with the invention it is possible to provide a kind of intravascular pressure measurement conduit with supporting mechanism.The intravascular pressure
Measure conduit and provide support to inner tube by the extension of supporting construction, be located at so as to improve from distal portions to close end
The resistant to bending intensity of the inner tube of office, enhance the push ability of intravascular pressure measurement conduit.
Brief description of the drawings
Fig. 1 shows the vertical of the measurement conduit of the intravascular pressure with supporting construction involved by embodiments of the present invention
Body structural representation；
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 the edge of the measurement conduit of the intravascular pressure with supporting construction involved by embodiments of the present invention
The sectional view of length direction；
Fig. 4 shows that the distal portions of the intravascular pressure measurement conduit 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 the 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 intravascular pressure measurement conduit involved by embodiments of the present invention is put
Big schematic diagram；
Fig. 7 shows that the part of the supporting mechanism of the intravascular pressure measurement conduit involved by embodiments of the present invention is stood
Body structural representation；And
Fig. 8 shows the supporting mechanism of the intravascular pressure measurement conduit involved by embodiments of the present invention 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.
Embodiment
Although being illustrated above in association with drawings and examples to the present invention, it will be appreciated that described above
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 be deformed and be changed to the present invention as needed, these deformations and change are within the scope of the present invention.
It should be noted that term " comprising " and " having " and their any deformation in the present invention, 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 can include or with not listing clearly or for these processes, method, product or equipment
Intrinsic other steps or unit.
In addition, subhead being related in describing below the present invention etc. be not meant to limit the present invention in perhaps model
Enclose, it is merely possible to the suggesting effect read.Such subhead can neither be interpreted as the content for splitting article, also not
Content under subhead should be limited only within the range of subhead.
Fig. 1 shows the vertical of the measurement conduit of the intravascular pressure with supporting construction involved by embodiments of the present invention
Body structural representation.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 supporting 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 the clear possibility for representing, having in above-mentioned diagram
A part for proximal part is illustrate only, some possibility eliminate a part for distal portions.
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 ") distal portions 10, the proximal part 20 being connected with distal portions 10 and the pressure for measuring intravascular blood pressure are mainly included
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), and doctor is by manipulating blood pressure measurement conduit 1
Proximal part 20, direction of the distal portions 10 along medical guiding wire 2 toward arrow A can be slided, 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, for example, it is narrow
Distal side (for example, narrow downstream, away from sustainer) and narrow proximal lateral (such as narrow upstream, close sustainer)
Blood pressure readings.In addition, one end of the remote 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 can show and store the FFR values being computed obtained by blood pressure signal, after being
Continuous PCI 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 that can also be in extension of shape, oval tubular etc..In some instances, from easy to process and be advantageous 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 being able to ensure that distal portions 10 easily connect medical guiding wire 2 i.e.
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 precalculated position (such as the focus that pushes to distal portions 10 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 connects with bending section 112 and forms lumen therethrough, it is possible thereby to receive single medical guiding wire
2.In addition, inner tube 11 can have front port 11a and opening 11b, thus, medical guiding wire 2 can be via front port 11a or opening
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, distal portion is worked as
When dividing 10 to have cylindric, the axis direction of main paragraph 111 is substantially parallel with the axis direction of distal portions 10.Thus, remote
End part 10 along medical guiding wire 2 promote when, it can be ensured that the moving direction of the main paragraph 111 and distal portions 10 of inner tube 11 is 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, it is 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, thus, it is possible to by distal portion
Divide 10 to be limited on medical guiding wire 2 and carry out push operation, and form fast exchange mouth.
Fig. 5 shows that the distal portions of the 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 line L1 of bending section 112 and main paragraph 111 center
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
The predetermined angular θ that are formed of center line L2 can be 110 ° to 170 °, it is preferable that predetermined angular θ is 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, as described above, medical guiding wire 2 can enter from the front port 11a of inner tube 11, and wear successively
Main paragraph 111 and bending section 112 are crossed, and is stretched out from opening 11b.In addition, present embodiment not limited to this, in some instances,
Medical guiding wire 2 can also enter inner tube 11 from opening 11b, and be stretched out from front port 11a.
In the present embodiment, can be by the pact of bending section 112 when medical guiding wire 2 can relatively move along inner tube 11
Beam, its moving direction can occur to change accordingly.Thereby, it is possible to suppress the end of medical guiding wire 2 to distal portions 10 or near-end
The damage of part 20.
In addition, although described above is inner tube 11 includes main paragraph 111 and bending section 112, but present embodiment and unlimited
In this.For example, in some instances, such as inner tube 11 can be with cylindrical, in this case, inner tube 11 can only include upper
The main paragraph 111 stated, and main paragraph 111 is cylindrical.Now, distal portions 10 can not also be with continuous with proximal part 20
Mode for example connect (not shown) in a manner of 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 be used in intervention operation
Conventional seal wire.In some instances, the diameter of medical guiding wire 2 is, for example, 0.1mm~0.6mm, and typical case or the medical of standard are 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 external diameter of medical guiding wire 2, in this case,
Doctor etc. can easily select various sizes of medical guiding wire 2, as long as being able to ensure that the external diameter of the medical guiding wire 2 is less than seal wire
The internal diameter of inner chamber 11.Thus, on the one hand, in medical guiding wire 2 as use, distal cannula 10 can be facilitated to connect doctor
With seal wire 2, and make medical guiding wire 2 in the guidewire lumen 11 of distal cannula 10 relative movement or it is relative slide, on the other hand
Also the increase of the cross-sectional area (the particularly cross-sectional area of distal cannula 10) of blood pressure measurement conduit 1 can be suppressed.In addition, in order to
Medical guiding wire 2 is set to move or slide in the guidewire lumen 11 of distal cannula 10, guidewire lumen 11 preferably uses smooth interior table
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 into blood pressure measurement conduit 1, only
Distal cannula 10 is connected on medical guiding wire 2, thus, it is possible to convenient use or changes 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 with proximal part 20 by bonding way, can also be coupled by connector such as sleeve pipe.
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 connected with proximal part 20.That is, outer tube 50 is by distal portions 10 and closely
End part 20 connects.In some instances, the thermoplasticity of outer tube 50 can be utilized and closely cover distal portions 10 and close end
Divide the parts of 20 connections.Thus, it is possible to distal portions 10 are made to be linked into an integrated entity with proximal part 20.
In addition, as described above, distal cannula 10 can connect with proximal part 20 in a manner of outer surface is continuous, 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 on the length direction of conduit 1 and overlapping part be present.In other examples, distal cannula 10 can be with proximal part 20
It is separated from each other and is coupled by connection sleeve pipe.
In addition, in some instances, the inner tubes 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, pass through in distal portions 10 multiple with bending
Miscellaneous blood vessel and when touching blood vessel unavoidably, can adapt to the shape of blood vessel and produce deformation, it is right so as to suppress distal portions 10
The damage of blood vessel.
In addition, in some instances, main paragraph 111 and bending section 112 can use different materials.Such as main paragraph 111
Polyimides (PI) or polyester can be used, bending section 112 can use nylon.In this case, because nylon material has
There is good thermoplasticity, easy thermoplastic shaping is required shape, such as formation has forniciform bending section 112.In addition,
In some instances, bending section 112 can also select other thermoplastics.
(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 such as polyethylene terephthalate with biocompatibility
(Polyethylene Terephthalate, abbreviation PET) etc..Thus, it is possible to using in thermoplastic tight's cladding of outer tube 50
Pipe 11, protected distal portions 10.
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 tube wall corresponding to main paragraph 111.
In addition, in the present embodiment, in the tube wall of outer tube 50, the side opening for corresponding to inner tube 11 is provided with, so as to inner tube
11 penetrate with the side opening of outer tube 50.In other words, the bending section 112 of inner tube 11 can penetrate the tube wall of outer tube 50.Show at some
In example, bending section 112 penetrates the tube wall of outer tube 50 by side opening.Thus, medical guiding wire 2 can be stretched from the tube wall of outer tube 50
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 a portion of the main paragraph 111 of inner tube 11, and the second outer tube can at least coat distal portion
Divide 10 parts being connected 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 arranged at distal portions 10.Specifically, press
Force snesor 30 can be arranged 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 arranged at outer wall corresponding to main paragraph 111.
In the present embodiment, pressure sensor 30 is set close to the end of distal portions 10 (i.e. the end of inner tube 11).
In such a case, it is possible to make pressure sensor 30 closer to the end of distal portions 10, so as to the position according to the end
Put 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 suppress 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 transmit via wire 31.Wire 31
It can be electrically connected by welding with pressure sensor 30.In addition, wire 31 can be between inner tube 11 and outer tube 50 along near-end
Part 20 extends.Specifically, 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.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 can include near-end outer tube 21.In some instances, closely
End outer tube 21 can be made up of materials such as polyimides (PI), polyester or nylon.In the present embodiment, proximal part 20
Shape is not particularly limited, can be with cylindrical shape in extension of shape, rectangular tubular that can also be in extension of shape, oval tubular etc..
In the present embodiment, from easy to process and be advantageous 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 external monitoring device of patient etc. 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 near-end outer tube 21 and (not scheme
Show).In addition, in other examples, outer tube 50 can also be integrally formed with near-end outer tube 21.
In the present embodiment, proximal part 20 can also include the protection pipe 22 being arranged in near-end outer tube 21.One
In a little examples, protection pipe 22 can be made up of materials such as polyimides (PI), polyester or nylon.
In the present embodiment, the above-mentioned wire 31 for being used to transmit blood pressure signal drawn from pressure sensor 30 can edge
The inside extension of protection pipe 22.Thereby, it is possible to effectively suppress directly contacting for wire 31 and vascular tissue liquid, so as to protect
Wire 31 and the stability for improving the blood pressure signal transmitted along wire 31.
In addition, wire 31 for example can be pasted in protection pipe 22 by mode for dispensing glue.Thus, protection pipe 22 can limit
The movement of wire 31 processed, prevent electrical connection of the wire 31 with pressure sensor 30 during being moved with blood pressure measurement conduit 1
Loose contact or interruption.
(supporting mechanism)
Fig. 6 shows that the part of the supporting mechanism of the intravascular pressure measurement conduit involved by embodiments of the present invention is put
Big schematic diagram.Fig. 7 shows the part of the supporting mechanism of the intravascular pressure measurement conduit involved by embodiments of the present invention
Dimensional structure diagram.Fig. 8 shows the supporting mechanism of the intravascular pressure measurement conduit involved by embodiments of the present invention
Dimensional structure diagram in distal portions Yu proximal part junction.In fig. 8, for the ease of represent, 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 on 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 arranged at proximal part 20, and the remainder (extension 42) of supporting mechanism 40 is at least provided with distal portion
Divide 10 coupling parts with 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 base portion 41 of supporting mechanism 40 is arranged on proximal part 20 and extension 42 extends to distal end
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 near-end outer tube 21, can be with
The outer surface of the protection pipe 22 of proximal part 20 is coated in an orbiting manner.In addition, in some instances, supporting mechanism 40 can
To be made up of stainless steel, copper, aluminium alloy or hard plastics.
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 formed.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 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 fit in the outer wall of inner tube 11 with the form fit of inner tube 11.In some instances, extension 42 can be with attached
Proximally the toward distal portion 10 of part 20 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 because 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 be drawn from supporting mechanism 40 and along distal portions 10 bearing of trend be attached in
The outer wall extension of pipe 11.In the present embodiment, strengthening mechanism 60 can be drawn from the inside of supporting mechanism 40 in a tubular form.One
In a little examples, strengthening mechanism 60 can also draw (not shown) from the side of supporting mechanism 40.
In addition, in some instances, strengthening mechanism 60 can be the core filaments of hard, such as wire.Strengthening mechanism 60 can
To extend along the bearing of trend of distal portions 10 in gradually-reducing shape.In addition, strengthening mechanism 60 can be along the outer wall of inner tube 11
The length of extension is more than the length of outer wall extension of the extension 42 along 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, and due to adding
Gu mechanism 60 is in gradually-reducing shape so that bearing of trend of the hardness of distal portions 10 along distal portions 10 gradually changes, 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
Connect or paste and fixed with supporting mechanism 40.
Although being illustrated above in association with drawings and embodiments to the present invention, it is not intended to limit
The present invention, it will be appreciated that to those skilled in the art, without departing from the spirit and scope of the present invention, can
To be deformed and be changed to the present invention, these deformations and change are each fallen within the scope of the claimed protection of the present invention.
Claims (10)
- A kind of 1. intravascular pressure measurement conduit with supporting mechanism, it is characterised in thatIncluding：Distal portions, it has the inner tube slideably received within single medical guiding wire；Proximal part, it is connected with the distal portions；Pressure sensor, it is used to measure endovascular blood pressure；AndSupporting mechanism, it has the base portion that is arranged on the proximal part and from the base portion along the proximal part Length direction extends to the extension of the distal portions,The extension is attached to the outer wall of said inner tube and supports said inner tube.
- 2. intravascular pressure as claimed in claim 1 measures conduit, it is characterised in thatAlso 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, it is characterised in thatIn the tube wall of the outer tube, the side opening for corresponding to said inner tube is provided with, so as to which said inner tube and the side opening penetrate.
- 4. intravascular pressure as claimed in claim 3 measures conduit, it is characterised in thatSaid 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 claimed in claim 1 measures conduit, it is characterised in thatThe extension is to be attached to the shape of the outer wall of said inner tube from the proximal part towards the distal portions It is tapered.
- 6. intravascular pressure as claimed in claim 1 measures conduit, it is characterised in thatIn a tubular form, the extension is by the way that the base portion is formed into acute angle along with the center line of the base portion to the base portion Angle direction chamfers a part for the base portion and formed.
- 7. intravascular pressure as claimed in claim 1 measures conduit, it is characterised in thatThe supporting mechanism is formed by least one of working as material selected from stainless steel, copper, aluminium alloy or hard plastics.
- 8. intravascular pressure as claimed in claim 1 measures conduit, it is characterised in thatThe pressure sensor is arranged at the outer wall of said inner tube,The blood pressure signal measured by the pressure sensor transmits via wire, the wire said inner tube and the outer tube it Between along the proximal part extend.
- 9. intravascular pressure as claimed in claim 2 measures conduit, it is characterised in thatThe outer tube also covers the part that the distal portions are connected with the proximal part.
- 10. intravascular pressure as claimed in claim 1 measures conduit, it is characterised in thatStrengthening mechanism is additionally provided between said inner tube and the supporting mechanism.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
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| 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 |
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| CN107736884A true CN107736884A (en) | 2018-02-27 |
| CN107736884B CN107736884B (en) | 2018-10-12 |
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| 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 |
| WO2020093967A1 (en) * | 2018-11-05 | 2020-05-14 | 苏州润迈德医疗科技有限公司 | Novel catheter for invasive arterial pressure monitoring, and method for using same |
| CN112294278A (en) * | 2019-08-02 | 2021-02-02 | 深圳北芯生命科技有限公司 | Intravascular pressure measuring catheter |
| 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 |
| 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 |
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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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