CN209378262U - A kind of medical catheter and guiding core apparatus - Google Patents
A kind of medical catheter and guiding core apparatus Download PDFInfo
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- CN209378262U CN209378262U CN201821766957.7U CN201821766957U CN209378262U CN 209378262 U CN209378262 U CN 209378262U CN 201821766957 U CN201821766957 U CN 201821766957U CN 209378262 U CN209378262 U CN 209378262U
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- 230000001070 adhesive effect Effects 0.000 claims description 8
- 230000002792 vascular Effects 0.000 abstract description 36
- 230000001464 adherent effect Effects 0.000 abstract description 16
- 210000003462 vein Anatomy 0.000 abstract description 16
- 230000000740 bleeding effect Effects 0.000 abstract description 8
- 239000008280 blood Substances 0.000 description 25
- 210000004369 blood Anatomy 0.000 description 25
- 238000010586 diagram Methods 0.000 description 24
- 238000001631 haemodialysis Methods 0.000 description 13
- 229940079593 drug Drugs 0.000 description 10
- 239000003814 drug Substances 0.000 description 10
- 239000003292 glue Substances 0.000 description 8
- 238000010241 blood sampling Methods 0.000 description 7
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- 230000000322 hemodialysis Effects 0.000 description 5
- 239000012530 fluid Substances 0.000 description 4
- 238000000034 method Methods 0.000 description 4
- 238000007920 subcutaneous administration Methods 0.000 description 4
- HTTJABKRGRZYRN-UHFFFAOYSA-N Heparin Chemical compound OC1C(NC(=O)C)C(O)OC(COS(O)(=O)=O)C1OC1C(OS(O)(=O)=O)C(O)C(OC2C(C(OS(O)(=O)=O)C(OC3C(C(O)C(O)C(O3)C(O)=O)OS(O)(=O)=O)C(CO)O2)NS(O)(=O)=O)C(C(O)=O)O1 HTTJABKRGRZYRN-UHFFFAOYSA-N 0.000 description 3
- 230000001154 acute effect Effects 0.000 description 3
- 238000010276 construction Methods 0.000 description 3
- 238000000502 dialysis Methods 0.000 description 3
- 230000000694 effects Effects 0.000 description 3
- 229960002897 heparin Drugs 0.000 description 3
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- IJVRPNIWWODHHA-UHFFFAOYSA-N 2-cyanoprop-2-enoic acid Chemical compound OC(=O)C(=C)C#N IJVRPNIWWODHHA-UHFFFAOYSA-N 0.000 description 2
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Classifications
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- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61B—DIAGNOSIS; SURGERY; IDENTIFICATION
- A61B17/00—Surgical instruments, devices or methods
- A61B17/34—Trocars; Puncturing needles
-
- 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
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- Health & Medical Sciences (AREA)
- Life Sciences & Earth Sciences (AREA)
- Animal Behavior & Ethology (AREA)
- General Health & Medical Sciences (AREA)
- Veterinary Medicine (AREA)
- Engineering & Computer Science (AREA)
- Biomedical Technology (AREA)
- Heart & Thoracic Surgery (AREA)
- Public Health (AREA)
- Surgery (AREA)
- Pathology (AREA)
- Molecular Biology (AREA)
- Medical Informatics (AREA)
- Nuclear Medicine, Radiotherapy & Molecular Imaging (AREA)
- Biophysics (AREA)
- Pulmonology (AREA)
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- External Artificial Organs (AREA)
- Media Introduction/Drainage Providing Device (AREA)
Abstract
The utility model provides a kind of medical catheter, which includes that the first catheter body and part are placed in the first catheter body for guiding the guiding core apparatus of the first catheter body insertion blood vessel.The utility model also provides a kind of guiding core apparatus, which is used for medical catheter as described above, and medical catheter includes the first catheter body, and guiding core apparatus part is placed in the first catheter body for guiding the first catheter body insertion blood vessel.Medical catheter provided by the utility model and guiding core apparatus can allow medical catheter cunning freely to puncture into blood vessel, it reduces medical catheter and is stuck on the outside of vascular wall or tears the risk that vascular wall causes big bleeding, it can also play a supporting role in the place that blood vessel corner and/or vein tube wall etc. easily " adherent " phenomenon occur, reduce blood vessel and collapse wall bring blood vessel blockage risk.
Description
Technical field
The utility model relates to field of medical article technology, more particularly to a kind of medical catheter and guiding core apparatus.
Background technique
Existing medical catheter causes greatly in order to avoid being stuck on the outside of vascular wall or tearing vascular wall when puncturing inlet
The cross section of catheter body is made as the lesser inclined-plane of the angle between conduit cross section, in order to puncture into blood by bleeding
Can be slided when pipe it is smooth, can also smoothly be pierced into blood vessel while do not damage vascular wall.But at this point, the cross section of catheter body cannot rise
To the effect of support blood vessels wall, blood vessel or conduit are easily occurred by " adherent " when blood vessel corner and/or vein tube wall collapse
Wall blocking or not exclusively blocking.If, may be stifled because of blood vessel or conduit carrying out the conveying of blood, drug or nutriment
Plug causes transfer passage not smooth, and treatment is interfered to carry out.If may decline because of blood flow carrying out hemodialysis
CRRT operation is caused to shut down, treatment is hindered to carry out.
" adherent " phenomenon is collapsed and there is vascular wall in single lumen catheter, double channel catheter, multi-cavity catheter.
For example, being controlled with deepen continuously research and the clinical practice discovery of hemodialysis using double channel catheter
It treats more preferable than single lumen catheter effect.
But there is also the same problems in use for existing double channel catheter.On the one hand, double channel catheter is worn in blood vessel
When thorn, the port of the cross-sectional profile of catheter body can be stuck on the outside of vascular wall or tear vascular wall when puncturing inlet and cause
Big bleeding.On the other hand, big bleeding is caused in order to avoid being stuck on the outside of vascular wall or tearing vascular wall when puncturing inlet, it will
The cross section of catheter body is made as the lesser inclined-plane of the angle between conduit cross section, in order to can when puncturing into blood vessel
It is sliding smooth, can also smoothly be pierced into blood vessel while do not damage vascular wall.But at this point, the cross section of catheter body cannot play support blood
Easily by " adherent " vascular wall blocking or incomplete occurs for the effect of tube wall when blood vessel corner and/or vein tube wall are collapsed
Blocking causes blood flow decline that CRRT operation is caused to shut down, treatment is hindered to carry out.
It is the dialysis comparatively ideal selection of (or CRRT) patient that subcutaneously double vessels at deep veins, which carries out haemodialysis, and blood vessel is logical
Road is to carry out the essential precondition of hemodialysis.
Therefore it needs one kind that can while both can solve the sliding vascular wall that freely enters when puncturing and avoids asking for big bleeding
Topic, and the conduit can be made to avoid the conduit for occurring blood vessel " adherent " phenomenon when blood vessel corner and/or vein tube wall collapse.
Certainly, medical catheter of the invention can not only can be used for progress blood, drug or nutriment in human body
Conveying, conduit, which is provided to, to be carried out subcutaneous double vessels at deep veins and carries out the patient of haemodialysis to use, and is supplied to using single
Cavities conduit pipe, double channel catheter, patient's use of multi-cavity catheter and the usage scenario patient use of other similar treatment technology.
Utility model content
The utility model provides a kind of medical catheter and guiding core apparatus, and it is sliding when puncturing can both to have can solve conduit simultaneously
Freely enter the problem of vascular wall avoids big bleeding, and the conduit can be made to avoid collapsing in blood vessel corner and/or vein tube wall
Occurs blood vessel " adherent " phenomenon when sunken.
To solve the above-mentioned problems, a kind of technical solution that the utility model uses is: a kind of medical catheter, medical catheter
It is placed in the first catheter body including the first catheter body and part for guiding the guiding core apparatus of the first catheter body insertion blood vessel.
Wherein, guiding core apparatus include outside sequentially connected pipe, transition connection portion and tail portion, be exposed to first outside pipe
Outside catheter body, transition connection portion is used to be cooperatively connected with the first catheter body.
Preferably, it is streamlined for guiding the outer profile outside core apparatus pipe.Outside guiding core pipe there is the sub warhead longitudinal axis to cut open
The transition guide ramp of face object side view form, when puncture, blood sampling hole main-inlet cross section is screened and smoothly entered by " sub warhead "
It is intravascular, do not damage vascular wall.
Preferably, the width for guiding core apparatus tail portion is less than the width of transition connection portion, along the first catheter body cross outside pipe
The length of cross-wise direction is 9-11mm.
Preferably, guiding core apparatus further includes for hand-held hand-held part, and hand-held part is connect with tail portion.
Preferably, hand-held part is ring-type, cylindricality, circle or taper.
Wherein, guiding core apparatus is to be detachably connected with the first catheter body.
Preferably, guiding core apparatus is detachably connected with the first catheter body by medical adhesive realization.Preferably, guiding core dress
Cooperate between the transition connection portion set for zero clearance.
Wherein, it is preferred that the longitudinal section of the first catheter body and the cross section of the first catheter body are along guiding core apparatus extension side
To angle be 45 degree to 135 degree.
It is further preferred that the longitudinal section of the first catheter body and the cross section of the first catheter body are along guiding core apparatus extension side
To angle less than 90 degree.
Preferably, the catheter body at least one is led along the edge that guiding core apparatus extending direction diameter of section is less than catheter body
Draw core apparatus extending direction opposite direction catheter body diameter of section.
Preferably, the first catheter body and/or the second catheter body are equipped with side opening, and side opening is as time entrance or secondary outlet.Into one
Step is preferred, and side opening diameter is 1.5mm.
" adherent " rate of conduit can be greatly lowered in the utility model medical catheter structure.For example, the first of medical catheter
When catheter body is as liquid-in pipe, guiding cavity entrance set by core apparatus is main-inlet, and the first conduit body side surface is provided with
Side opening, then side opening is as time entrance.If the longitudinal section of the first catheter body and the cross section of the first catheter body are prolonged along guiding core apparatus
When the angle for stretching direction is 85 degree, i.e., when the plane and the first catheter body edge guiding core where the first catheter body main-inlet cross section
When device extending direction forms 85 degree, and vascular wall collapses the gauffer that cannot form acute angle shape, and blood vessel corner curved surfaces are equal
For the space that obtuse angle, 85 degree of angles where cannot being embedded in the entrance of the first catheter body are formed, on the other hand, the first catheter body master
Entrance cross section top edge forms the support of enough height, to ensure that the blood flow of inlet is unobstructed.
Preferably, medical catheter further includes the second catheter body, and the cavity of the first catheter body and the second catheter body is mutually indepedent,
First catheter body and/or the second catheter body are equipped with guiding core apparatus, and the first catheter body and/or the second catheter body are equipped at least one
Side opening, medical catheter further include threeway tube socket, the first catheter body distal end portion being connected to the first catheter body and with the second catheter body
Second catheter body distal end portion of connection, threeway tube socket respectively with one end far from the first catheter body and the second catheter body outside pipe
Connection, the connection of the first catheter body distal end portion, the connection of the second catheter body distal end portion, the first catheter body distal end portion and the second catheter body are remote
End is respectively arranged with the first watering control clamp and the second watering control clamp, and threeway tube socket is additionally provided with the fixed dress for fixing medical catheter
It sets.
Preferably, the cavity cross-section of the first catheter body and/or the second catheter body is ellipse, semicircle, sickle or side
Shape, it is further preferred that two points symmetrical to referred to as approximate ellipsoidal of the cavity cross-section of the first catheter body and/or the second catheter body
Body.
To solve the above-mentioned problems, the utility model discloses a kind of guiding core apparatus, core apparatus is guided for single-chamber, double
In chamber or multi-cavity medical catheter, medical catheter includes the first catheter body, and guiding core apparatus part, which is placed in the first catheter body, to be used
Blood vessel is inserted into the first catheter body of guidance.
Preferably, guiding core apparatus include outside sequentially connected pipe, transition connection portion and tail portion, the is exposed to outside pipe
Outside one catheter body, transition connection portion is used to be cooperatively connected with the first catheter body.
Preferably, the outer profile outside pipe is streamlined.
Preferably, the width of tail portion is less than the width of transition connection portion, along the first catheter body cross-sectional direction outside pipe
Length is 9-11mm.
Preferably, guiding core apparatus further includes for hand-held hand-held part, and hand-held part is connect with tail portion.
Preferably, guiding core apparatus is to be detachably connected with the first catheter body.
To sum up, the utility model embodiment provides a kind of medical catheter and guiding core apparatus is able to solve in the prior art
Medical catheter it is not sliding smooth when puncturing or be stuck on the outside of vascular wall or tear vascular wall in the case where not having to avulsion shell and cause
The problem of big bleeding, it is often more important that can be to avoid occurring blood vessel " adherent " when blood vessel corner and/or vein tube wall collapse
Phenomenon.A kind of medical catheter provided by the embodiment of the utility model and guiding core apparatus can be smooth puncture vessel, give blood vessel
Wall provides a supporting role, and it is compact-sized, assembly and it is easy-to-use.
In order to which the above and other objects, features and advantages of the utility model can be become apparent, implementation is cited below particularly
Example cooperation attached drawing, is described in detail below.
Detailed description of the invention
It, below will be to required in embodiment description in order to illustrate more clearly of the technical scheme in the embodiment of the utility model
Attached drawing to be used is briefly described, it should be apparent that, the accompanying drawings in the following description is only some realities of the utility model
Example is applied, it for those of ordinary skill in the art, without creative efforts, can also be according to these attached drawings
Obtain other attached drawings, in which:
Fig. 1 is a kind of structural schematic diagram of medical catheter embodiment of the utility model；
Fig. 2 is a kind of structural schematic diagram of the guiding core apparatus of medical catheter embodiment shown in FIG. 1；
Fig. 3 is a kind of structural schematic diagram of the first catheter body of medical catheter embodiment shown in FIG. 1；
Fig. 4 is the structural schematic diagram of the utility model another kind medical catheter embodiment；
Fig. 5 is a kind of partial enlargement structural representation of medical catheter shown in Fig. 4；
Fig. 6 is a kind of structural schematic diagram of the main view angle of field of medical catheter shown in Fig. 4；
Fig. 7 is a kind of structural schematic diagram of the vertical view angle of field of medical catheter shown in Fig. 4；
Fig. 8 is a kind of structural schematic diagram of the guiding core apparatus of medical catheter embodiment shown in Fig. 4；
Fig. 9 is a kind of the first catheter body of medical catheter embodiment shown in Fig. 4 and the structural schematic diagram of the second catheter body；
Figure 10 is a kind of the first catheter body of medical catheter embodiment shown in Fig. 4 and the main view angle of field of the second catheter body
Structural schematic diagram；
Figure 11 is a kind of the first catheter body of medical catheter embodiment shown in Fig. 4 and the vertical view angle of field of the second catheter body
Structural schematic diagram；
Figure 12 is a kind of the first catheter body of medical catheter embodiment shown in Fig. 4 and the left view angle of field of the second catheter body
Structural schematic diagram；
Figure 13 is a kind of structural schematic diagram of the use state embodiment of medical catheter of the utility model.
Specific embodiment
The following will be combined with the drawings in the embodiments of the present invention, carries out the technical scheme in the embodiment of the utility model
Clearly and completely describe, it is clear that the described embodiments are only a part of the embodiments of the utility model, rather than whole
Embodiment.Based on the embodiments of the present invention, those of ordinary skill in the art are without making creative work
Every other embodiment obtained belongs to the range of the utility model protection.
Embodiment one
It is referred to together incorporated by reference to Fig. 1-3, Fig. 1 is a kind of structural schematic diagram of medical catheter embodiment of the utility model；Fig. 2
It is a kind of structural schematic diagram of the guiding core apparatus of medical catheter embodiment shown in FIG. 1；Fig. 3 is that one kind shown in FIG. 1 is medical
The structural schematic diagram of first catheter body of conduit embodiments.
The utility model embodiment protects a kind of medical catheter, specifically for a kind of single lumen catheter.The medical catheter can be used for
Conveying to blood, drug or nutriment is carried out in human body, conduit are provided to the patient's use for carrying out haemodialysis, with
And the usage scenario patient of other similar treatment technology uses.
The medical catheter of the utility model embodiment includes that the first catheter body 2 and part are placed in the first catheter body 2 and use
In the guiding core apparatus 1 for guiding the first catheter body 2 insertion blood vessel.
First catheter body 2 is hollow conduit, the transmission channel as fluid bodies such as drug, blood, nutriments.It punctures
The side for entering human body is proximal end, and the opening of proximal end is main-inlet or primary outlet.
Preferably, the first catheter body 2 is equipped with side opening 22, and side opening 22 is as time entrance or secondary outlet.For example, medical catheter
The first catheter body 2 as liquid-in pipe when, guiding cavity entrance set by core apparatus 1 is main-inlet, 2 side of the first catheter body
Face is provided with side opening 22, then side opening 22 is known as time entrance.It is further preferred that 22 diameter of side opening is 1.5 millimeters.First catheter body
2 main entry/exit mouth tube wall edge is provided with chamfered edge, prevents plowing from.Preferably, 2 its central points of entry/exit mouth of the first catheter body away from
3 millimeters with a distance from corresponding main entry/exit mouth cross section.Side opening 22 can be set to be arranged it is multiple, can also be symmetrical arranged.Setting
Side opening 22 increases the entrance of the first catheter body 2, is conducive to the inlet pressure for alleviating fluid body, alleviates to a certain extent
" adherent " phenomenon, alleviating the blocking of " adherent " phenomenon bring entrance influences.
Medical catheter is horizontal positioned, and the first catheter body 2 is in level and just puts state, and the longitudinal section of the first catheter body 2 is
The section that opening along 2 proximal end of the first catheter body is formed, when vertical view, the central point of the longitudinal section of the first catheter body 2 is located at first
On 2 center line of catheter body, the cross section of the first catheter body 2 is the level cross-sectionn of the first catheter body 2.
Preferably, the longitudinal section of the first catheter body 2 and the cross section of the first catheter body 2 are along guiding 1 extending direction of core apparatus
Angle be 45 degree to 135 degree.
Preferably, the longitudinal section of the first catheter body 2 and the cross section of the first catheter body 2 are along guiding 1 extending direction of core apparatus
Angle less than 90 degree.
Single lumen catheter, double channel catheter, more can be used in conveying to blood, drug or nutriment is carried out in human body
Cavities conduit pipe, no matter but using which kind of conduit, unobstructed vascular access is essential.As subcutaneously double vessels at deep veins carries out
Haemodialysis is the comparatively ideal selection of dialysis patient, and unobstructed vascular access is to carry out the essential premise of hemodialysis
Condition.
" adherent " rate of conduit can be greatly lowered in the utility model medical catheter structure, improve the unobstructed of vascular access
The main reason for probability, is the longitudinal section of the first catheter body 2 and cross section edge guiding 1 side of extension of core apparatus of the first catheter body 2
To angle setting, provide the supporting role of blood vessel.
For example, the longitudinal section of the first catheter body 2 and the cross section of the first catheter body 2 are along guiding 1 extending direction of core apparatus
Angle is set as 85 degree.On the one hand, the plane where 2 main-inlet cross section of i.e. the first catheter body in the longitudinal section of the first catheter body 2
85 degree are formed along guiding 1 extending direction of core apparatus with the first catheter body 2, and vascular wall collapses the gauffer that cannot form acute angle shape,
Blood vessel corner curved surfaces are obtuse angle, the space that 85 degree of angles where cannot being embedded in the entrance of the first catheter body 2 are formed,
On the other hand, 2 main-inlet cross section top edge of the first catheter body forms the support of enough height, to ensure inlet
Blood flow it is unobstructed.
Preferably, 2 cavity cross-section of the first catheter body is round, ellipse, semicircle, sickle or rectangular.First conduit
Flow-stopping clip, fixed device etc. can be set far from one end of human body in body 2, and details are not described herein again.
The guiding core apparatus 1 of the present embodiment includes 11, transition connection portion 12 and tail portion 13 outside sequentially connected pipe, and pipe is outer
Portion 11 is exposed to outside the first catheter body 2, and transition connection portion 12 is used to be cooperatively connected with the first catheter body 2.Transition connection portion 12 is
Core apparatus 1 and relatively fixed, mating connection the part of the first catheter body 2 are guided, tail portion 13 is guiding 1 end of core apparatus.
11 outer profile is streamlined outside pipe, in order to be able to more smooth insertion blood vessel.Streamlined is 11 outside pipe
A kind of outer shape, be usually expressed as smooth and rule surface, not big fluctuating and sharp corner angle.Fairing ace
It ensure that pipe outside 11 by lesser resistance.Such as there is the sub warhead longitudinal axis to cut open for " sub warhead " shape, guiding core pipe outside 11
The transition guide ramp of face object side view form, when puncture, blood sampling hole entrance cross section is screened by " sub warhead " and smoothly enters blood
In pipe, do not damage vascular wall.Outside pipe 11 outer profile may be it is streamlined except outer shape, it is such as wedge-shaped, trapezoidal, three
It is angular, round, it can also screen 2 main entrance and exit 21 of the first catheter body to be smoothly inserted into blood vessel.
Preferably, guiding core apparatus 1 is to be detachably connected with the first catheter body 2.Guide core apparatus 1 and the first catheter body 2
After cooperation merging blood vessel, the tail portion 13 of guiding core apparatus 1 can be pulled to pull out guiding core apparatus 1, gone out so that the first catheter body 2 is main
Entrance 21 is unobstructed.After the merging of the first catheter body 2, is pulled out by gently one and taken out guiding core apparatus 1, compact-sized, operation
Simplicity, it is easy to use.
Certainly, the connection type for guiding core apparatus 1 and the first catheter body 2 may be not dismantling connection mode.At this point, leading
Drawing core apparatus 1 can be set to hollow structure, do not influence catheter body it is unobstructed under conditions of will guiding core indwelling in the blood vessels.This
When, medical catheter includes that the first catheter body 2 and part are placed in the first catheter body 2 for guiding the first catheter body 2 insertion blood
The guiding core apparatus 1 of pipe, guiding core apparatus 1 are set as hollow structure, and guiding core apparatus 1 is by 11, transition connection portion 12 outside pipe
It constitutes.At this point, the front opening of guiding core is the entrance of medical catheter.
Guiding core apparatus 1 and the first catheter body 2 can cooperate for zero clearance.At this point, guiding core apparatus 1 is opposite with catheter body
It is in close contact, in merging vascular process, guides core apparatus 1 and conduit body position is relatively fixed, be conducive to be placed in.It is led pulling out
When drawing core apparatus 1, guiding core apparatus 1 can be pulled out smoothly with the cooperation of catheter body zero clearance.
Preferably, guiding core apparatus 1 and catheter body pass through medical glue connection.Medical adhesive be suitable for be glued skin, internal organs,
Nerve, muscle, blood vessel, mucous membrane glue melt agent, also referred to as soft tissue medical adhesive, be mostly medical e alpha-cyanoacrylate 6B system's glue and
Fibrin bion glue.Medical adhesive can be degradable biomedical material.
Preferably, the width of tail portion 13 is less than the width of transition connection portion 12, rubbing when taking out guiding core apparatus 1 to reduce
Wipe power.Pipe outside 11 is 9-11mm along the length of 2 cross-sectional direction of the first catheter body.
Preferably, guiding core apparatus 1 further includes for hand-held hand-held part 14, and hand-held part 14 is connect with tail portion 13.
Preferably, hand-held part 14 is ring-type, cylindricality 141, circle 142 or taper.Hand-held part 14 is conducive to operator side
Just guiding core apparatus 1 is pulled out in the tail portion 13 of dragging guiding core apparatus 1.
The utility model, which provides a kind of medical catheter and guiding core apparatus 1, can allow medical catheter cunning freely to puncture into blood
Pipe reduces medical catheter and is stuck on the outside of vascular wall or tears the risk that vascular wall causes big bleeding, can also turn round in blood vessel
The place that place and/or vein tube wall etc. easily " adherent " phenomenon occur is played a supporting role, and is reduced blood vessel and is collapsed wall bring blood vessel
Block risk.Medical catheter can not only can be used for the conveying to blood, drug or nutriment is carried out in human body, and conduit can
It is supplied to and carries out patient's use that subcutaneous double vessels at deep veins carries out haemodialysis, be supplied to and led using single lumen catheter, two-chamber
The usage scenario patient of pipe, patient's use of multi-cavity catheter and other similar treatment technology uses.The utility model embodiment
A kind of medical catheter and guiding core apparatus 1 provided can be smooth puncture vessel, provided a supporting role to vascular wall, and structure
It is compact, assembly and it is easy-to-use.
Embodiment two
It is referred to together incorporated by reference to Fig. 4-13, Fig. 4 is the structural schematic diagram of the utility model another kind medical catheter embodiment；
Fig. 5 is a kind of partial enlargement structural representation of medical catheter shown in Fig. 4；Fig. 6 is a kind of master of medical catheter shown in Fig. 4
The structural schematic diagram at view visual angle；Fig. 7 is a kind of structural schematic diagram of the vertical view angle of field of medical catheter shown in Fig. 4；Fig. 8 is
A kind of structural schematic diagram of the guiding core apparatus of medical catheter embodiment shown in Fig. 4；Fig. 9, which is that one kind shown in Fig. 4 is medical, to be led
First catheter body of pipe embodiment and the structural schematic diagram of the second catheter body；Figure 10 is that a kind of medical catheter shown in Fig. 4 is implemented
First catheter body of example and the main view viewing angle constructions schematic diagram of the second catheter body；Figure 11 is a kind of medical catheter shown in Fig. 4
First catheter body of embodiment and the top view viewing angle constructions schematic diagram of the second catheter body；Figure 12 is that one kind shown in Fig. 4 is medical
First catheter body of conduit embodiments and the left view viewing angle constructions schematic diagram of the second catheter body；Figure 13 is the utility model one kind
The structural schematic diagram of the use state embodiment of medical catheter.
By taking double channel catheter as an example, which can be used for carrying out blood in human body the utility model embodiment medical catheter
The conveying of liquid, drug or nutriment, conduit are provided to the patient's use and other similar treatment for carrying out haemodialysis
The usage scenario patient of technology uses.
The medical catheter of the utility model embodiment includes that the first catheter body 42 and part are placed in the first catheter body 42
For guiding the guiding core apparatus 41 of the first catheter body 42 insertion blood vessel.
See Fig. 4, first catheter body 42 and 43 length of the second catheter body of the present embodiment are different, we specify relatively short herein
Conduit be the first catheter body 42, relatively long conduit be the second conduit, herein specify merely to interpretation technique scheme, is not answered
As the specified of restriction technical solutions of the utility model.
Preferably, medical catheter further includes the second catheter body 43, the cavity phase of the first catheter body 42 and the second catheter body 43
Mutually independent, the first catheter body 42 is equipped with guiding core apparatus 41.Settable guiding in first catheter body 42 and the second catheter body 43
Core apparatus 41, the one the second be only to claim in generation.
First catheter body 42, the second catheter body 43 are hollow conduit, as fluid bodies such as drug, blood, nutriments
Transmission channel.The side that first catheter body 42, the second catheter body 43 puncture into human body is proximal end, the first catheter body 42, second
The opening of 43 proximal end of catheter body is main-inlet or primary outlet.
Preferably, the first catheter body 42 and/or the second catheter body 43 are equipped with side opening.Side opening is as time entrance or secondary outlet.
For example, when the first catheter body 42 of medical catheter is as liquid-in pipe, guide cavity entrance set by core apparatus 41 be based on enter
Mouthful, 42 side of the first catheter body is provided with side opening, then side opening is known as time entrance.It is further preferred that side opening diameter is 1.5 millis
Rice.The main entry/exit mouth tube wall edge of first catheter body 42 is provided with chamfered edge, prevents plowing from.Preferably, the first catheter body 42 times
Its central point of entry/exit mouth is apart from 3 millimeters of distance of corresponding main entry/exit mouth cross section.Second catheter body, 43 main entrance and exit diameter is
2.5mm, 42 main entrance and exit diameter of the first catheter body are 3.0mm.Side opening can be set to be arranged it is multiple, can also be symmetrical arranged.
The entrance that side opening increases the first catheter body 42 is set, is conducive to the inlet pressure for alleviating fluid body, to a certain extent
Alleviate " adherent " phenomenon, alleviating the blocking of " adherent " phenomenon bring entrance influences.
Preferably, the utility model embodiment is that double channel catheter can be used as subcutaneous double vessels at deep veins, saturating for blood
Analysis treatment.The utility model is illustrated with blood purification with double vessels at deep veins, and accordingly, the first catheter body 42 is heparin tube,
First catheter body, 42 main-inlet is heparin tube main-inlet, and 42 side opening of the first catheter body is heparin tube time entrance, the second catheter body 43
For blood transfusion tube, 43 primary outlet of the second catheter body is blood transfusion tube primary outlet, and 43 side opening of the second catheter body is blood transfusion tube time outlet.
One of design scheme is: 43 side opening of the second catheter body blood transfusion 42 main-inlet of the first catheter body of hole distance is not less than
38mm。
Wherein two kinds of design schemes are: 43 side opening of the second catheter body blood transfusion 42 main-inlet of the first catheter body of hole distance is not less than
60mm。
Preferably, on the main-inlet two sides tube wall of the first catheter body 42 blood sampling cavity, respectively there is a side opening as blood sampling blood
The sub-inlet of liquid, 1.5 millimeters of diameter, central point distance 3 millimeters of main-inlet cross section linear distance of blood sampling.Second catheter body 43
Blood outlet hole aperture is 2.5mm, and the first catheter body 42 takes a blood sample hole main-inlet aperture as 3.0mm.
Preferably, the cavity cross-section of the first catheter body 42 and/or the second catheter body 43 is round, ellipse, semicircle, sickle
Blade type is rectangular, it is further preferred that the cavity cross-section of the first catheter body 42 and/or the second catheter body 43 is to referred to as approximate ellipse
The symmetrical diad of shape.
Preferably, 411 underlying surfaces are led with second outside the pipe of the guiding core apparatus 41 of the first catheter body 42 blood sampling cavity
The overhead surface of the tube wall of tube body 43 Medical absorbable adhesive bonding, and can firmly pull to pull by surgical doctor and be allowed to point
From.
Medical catheter is horizontal positioned, and the first catheter body 42 is in water laid-flat status, and the longitudinal section of the first catheter body 42 is
The section that the opening of first catheter body, 42 proximal end is formed, when vertical view, the central point of the longitudinal section of the first catheter body 42 is located at first
On 42 center line of catheter body, the cross section of the first catheter body 42 is the level cross-sectionn of the first catheter body 42.
Preferably, the longitudinal section of the first catheter body 42 and the cross section of the first catheter body 42 are along guiding 41 side of extension of core apparatus
To angle 44 be 45 degree to 135 degree.
Preferably, the longitudinal section of the first catheter body 42 and the cross section of the first catheter body 42 are along guiding 41 side of extension of core apparatus
To angle 44 less than 90 degree.
Single lumen catheter, double channel catheter, more can be used in conveying to blood, drug or nutriment is carried out in human body
Cavities conduit pipe, no matter but using which kind of conduit, unobstructed vascular access is essential.As subcutaneously double vessels at deep veins carries out
Haemodialysis is the comparatively ideal selection of dialysis patient, and unobstructed vascular access is to carry out the essential premise of hemodialysis
Condition.
" adherent " rate of conduit can be greatly lowered in the utility model medical catheter structure, improve the unobstructed of vascular access
The main reason for probability, is that the longitudinal section of the first catheter body 42 is prolonged with the cross section of the first catheter body 42 along guiding core apparatus 41
The angle 44 for stretching direction is arranged, and provides the supporting role of blood vessel.
For example, the longitudinal section of the first catheter body 42 and the cross section of the first catheter body 42 are along guiding 41 extending direction of core apparatus
Angle 44 be set as 85 degree.On the one hand, where 42 main-inlet cross section of i.e. the first catheter body in the longitudinal section of the first catheter body 42
Plane and the first catheter body 42 along guiding 41 extending direction of core apparatus form 85 degree, and vascular wall collapses cannot form acute angle shape
Gauffer, blood vessel corner curved surfaces are obtuse angle, the 85 degree of angles 44 that cannot be embedded in where the entrance of the first catheter body 42
The space of formation, on the other hand, 42 main-inlet cross section top edge of the first catheter body form the support of enough height, thus
Ensure that the blood flow of inlet is unobstructed.
The guiding core apparatus 41 of the present embodiment includes 411, transition connection portion 412 and tail portion 413 outside sequentially connected pipe,
411 are exposed to outside the first catheter body 42 outside pipe, and transition connection portion 412 is used to be cooperatively connected with the first catheter body 42.Transition connects
Socket part 412 is to guide core apparatus 41 and relatively fixed, mating connection the part of the first catheter body 42, and tail portion 413 is guiding core dress
Set 41 ends.
411 outer profile is streamlined outside pipe, in order to be able to more smooth insertion blood vessel.Streamlined is outside pipe
A kind of 411 outer shape is usually expressed as smooth and rule surface, not big fluctuating and sharp corner angle.It is streamlined
Surface ensure that pipe outside 411 by lesser resistance.Such as " sub warhead " shape, guiding core pipe outside 411 have sub warhead
The transition guide ramp of longitudinal axis section object side view form, when puncture, blood sampling hole entrance cross section is screened and smooth by " sub warhead "
Into it is intravascular, do not damage vascular wall.Outside pipe 411 outer profile may be it is streamlined except outer shape, such as wedge shape,
Trapezoidal, triangle, circle can also screen 42 entrance of the first catheter body to be smoothly inserted into blood vessel.
Preferably, guiding core apparatus 41 is to be detachably connected with the first catheter body 42.Guide core apparatus 41 and the first conduit
After the cooperation merging blood vessel of body 42, the tail portion 413 of guiding core apparatus 41 can be pulled to pull out guiding core apparatus 41, so as to the first conduit
42 entrance of body is unobstructed.After the merging of the first catheter body 42, is pulled out by gently one and taken out guiding core apparatus 41, structure is tight
It gathers, is easy to operate, it is easy to use.
Certainly, the connection type for guiding core apparatus 41 and the first catheter body 42 may be not dismantling connection mode.At this point,
Guiding core apparatus 41 can be set to hollow structure, do not influence catheter body it is unobstructed under conditions of will guiding core be retained in blood vessel
It is interior.At this point, medical catheter includes that the first catheter body 42 and part are placed in the first catheter body 42 for guiding the first catheter body
The guiding core apparatus 41 of 42 insertion blood vessels, guiding core apparatus 41 are set as hollow structure, guiding core apparatus 41 by 411 outside pipe,
Transition connection portion 412 is constituted.At this point, the front opening of guiding core is the entrance of medical catheter.
Guiding core apparatus 41 and the first catheter body 42 can cooperate for zero clearance.At this point, guiding core apparatus 41 and catheter body
Relative close contact guides core apparatus 41 and conduit body position is relatively fixed, be conducive to be placed in merging vascular process.?
When pulling out guiding core apparatus 41, guiding core apparatus 41 can be pulled out smoothly with the cooperation of catheter body zero clearance.
Preferably, guiding core apparatus 41 and catheter body pass through medical glue connection.Medical adhesive is to be suitable for being glued skin, dirty
Device, nerve, muscle, blood vessel, mucous membrane glue melt agent, also referred to as soft tissue medical adhesive, be mostly medical e alpha-cyanoacrylate 6B system glue
With fibrin bion glue.Medical adhesive can be degradable biomedical material.
Preferably, the width of tail portion 413 is less than the width of transition connection portion 412, when taking out guiding core apparatus 41 to reduce
Frictional force.Pipe outside 411 is 9-11mm along the length of 42 cross-sectional direction of the first catheter body.
Preferably, guiding core apparatus 41 further includes for hand-held hand-held part 414, and hand-held part 414 is connect with tail portion 413.
Preferably, hand-held part 414 is ring-type, cylindricality 4141, circle 4142 or taper.Hand-held part 414 is conducive to operate
Pull out guiding core apparatus 41 in the tail portion 413 that person easily pulls guiding core apparatus 41.
Preferably, medical catheter further includes threeway tube socket 45,42 distal end of the first catheter body being connected to the first catheter body 42
Portion 46 and 43 distal portion 47 of the second catheter body being connected to the second catheter body 43, threeway tube socket 45 is respectively and far from outside pipe 411
The first catheter body 42 connect with one end of the second catheter body 43,42 distal portion 46 of the first catheter body connection, the second catheter body 43
Distal portion 47 connects, and 42 distal portion 46 of the first catheter body and 43 distal portion 47 of the second catheter body are respectively arranged with the first watering control clamp 48
With the second watering control clamp 49, threeway tube socket 45 is additionally provided with the fixation device for fixing medical catheter.
In addition, the utility model additionally provides a kind of guidance core apparatus, the specific structure of the guidance core apparatus is referring to implementation
The description of example one and embodiment two, details are not described herein again.
To sum up, the utility model provides a kind of medical catheter and guiding core apparatus 41 can be in the premise for not having to avulsion shell
Under allow medical catheter cunning freely to puncture into blood vessel, reduce that medical catheter is stuck on the outside of vascular wall or tearing vascular wall causes to go out greatly
The risk of blood can also play a supporting role in the place that blood vessel corner and/or vein tube wall etc. easily " adherent " phenomenon occur,
Blood vessel is reduced to collapse wall bring blood vessel blockage risk.Medical catheter can not only can be used for progress blood, drug in human body
Or the conveying of nutriment, conduit, which is provided to, carries out patient's use that subcutaneous double vessels at deep veins carries out haemodialysis,
It is supplied to using single lumen catheter, double channel catheter, patient's use of multi-cavity catheter and the usage scenario of other similar treatment technology
Patient uses.A kind of medical catheter provided by the embodiment of the utility model and guiding core apparatus 41 can be smooth puncture vessel,
Provided a supporting role to vascular wall, and it is compact-sized, assembly and it is easy-to-use.
The medical catheter of the present embodiment, since size needs to match practical application scene and different equipment from distance, with
On the size that refers to and range data only as explaining that the utility model is used, be not limited to be necessary for size as above with apart from number
According to, should not be used as limitation scope of protection of the utility model explanation.
The above description is only the embodiments of the present invention, and therefore it does not limit the scope of the patent of the utility model, all
Equivalent structure or equivalent flow shift made based on the specification and figures of the utility model, is applied directly or indirectly in
Other related technical areas are also included in the patent protection scope of the utility model.
Claims (17)
1. a kind of medical catheter, which is characterized in that the medical catheter includes that the first catheter body and part are placed in described first
For guiding the guiding core apparatus of the first catheter body insertion blood vessel in catheter body.
2. medical catheter according to claim 1, which is characterized in that the guiding core apparatus includes outside sequentially connected pipe
Portion, transition connection portion and tail portion are exposed to outside first catheter body outside the pipe, the transition connection portion be used for it is described
First catheter body is cooperatively connected.
3. medical catheter according to claim 2, which is characterized in that the outer profile outside the pipe is streamlined.
4. medical catheter according to claim 2, which is characterized in that the width of the tail portion is less than the transition connection portion
Width, along the length of the first catheter body cross-sectional direction be 9-11mm outside the pipe.
5. medical catheter according to claim 2, which is characterized in that the guiding core apparatus further includes for hand-held hand
Portion is held, the hand-held part is connect with the tail portion.
6. medical catheter according to claim 5, which is characterized in that the hand-held part is ring-type, cylindricality, circle or cone
Shape.
7. medical catheter according to claim 1, which is characterized in that the guiding core apparatus is with first catheter body
It is detachably connected.
8. medical catheter according to claim 7, which is characterized in that the guiding core apparatus and first catheter body are logical
Medical adhesive realization is crossed to be detachably connected.
9. medical catheter according to claim 1, which is characterized in that the longitudinal section of first catheter body and described first
The cross section of catheter body is 45 degree to 135 degree along the angle of guiding core apparatus extending direction.
10. medical catheter according to claim 9, which is characterized in that the angle is less than 90 degree.
11. medical catheter according to claim 1, which is characterized in that the medical catheter further includes the second catheter body, institute
The cavity for stating the first catheter body and the second catheter body is mutually indepedent, and first catheter body is equipped with the guiding core apparatus, described
First catheter body and/or the second catheter body are equipped at least one side opening, and the medical catheter further includes threeway tube socket, with described the
First catheter body distal end portion of one catheter body connection and the second catheter body distal end portion being connected to second catheter body, described three
Siphunculus seat connect with far from first catheter body outside the pipe with one end of second catheter body respectively, described first
The connection of catheter body distal end portion, the connection of second catheter body distal end portion, first catheter body distal end portion and second conduit
Body distal portion is respectively arranged with the first watering control clamp and the second watering control clamp, and the threeway tube socket is additionally provided with described medical for fixing
The fixation device of conduit.
12. a kind of guiding core apparatus, which is characterized in that the guiding core apparatus is used for medical catheter as described in claim 1,
The medical catheter includes the first catheter body, and the guiding core apparatus part is placed in first catheter body for guiding institute
State the first catheter body insertion blood vessel.
13. guiding core apparatus according to claim 12, which is characterized in that the guiding core apparatus includes sequentially connected
Outside pipe, transition connection portion and tail portion, be exposed to outside first catheter body outside the pipe, the transition connection portion be used for
First catheter body is cooperatively connected.
14. guiding core apparatus according to claim 13, which is characterized in that the outer profile outside the pipe is streamlined.
15. guiding core apparatus according to claim 13, which is characterized in that the width of the tail portion connects less than the transition
The width of socket part along the length of the first catheter body cross-sectional direction is 9-11mm outside the pipe.
16. guiding core apparatus according to claim 13, which is characterized in that the guiding core apparatus further includes for holding
Hand-held part, the hand-held part is connect with the tail portion.
17. guiding core apparatus according to claim 13, which is characterized in that the guiding core apparatus and first conduit
Body is to be detachably connected.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| PCT/CN2019/094631 WO2020087963A1 (en) | 2018-07-18 | 2019-07-03 | Medical catheter and guide core device |
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2018211503366 | 2018-07-18 | ||
| CN201821150336 | 2018-07-18 |
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| Publication Number | Publication Date |
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| CN209378262U true CN209378262U (en) | 2019-09-13 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201821766957.7U Active CN209378262U (en) | 2018-07-18 | 2018-10-29 | A kind of medical catheter and guiding core apparatus |
Country Status (2)
| Country | Link |
|---|---|
| CN (1) | CN209378262U (en) |
| WO (1) | WO2020087963A1 (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112569018A (en) * | 2020-12-31 | 2021-03-30 | 刘劼 | Mouse middle cerebral artery line embolism device |
Family Cites Families (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US5415630A (en) * | 1991-07-17 | 1995-05-16 | Gory; Pierre | Method for removably implanting a blood filter in a vein of the human body |
| JP5175833B2 (en) * | 2006-03-10 | 2013-04-03 | クック メディカル テクノロジーズ エルエルシー | Medical device capable of drawing target tissue into clip arm housing chamber |
| CN201194987Y (en) * | 2008-05-22 | 2009-02-18 | 谢克基 | Multicenter trachea sheath |
| CN103272324B (en) * | 2013-05-31 | 2016-09-07 | 相良顺 | A kind of Wicresoft insertion type doser |
| CN205831886U (en) * | 2016-06-02 | 2016-12-28 | 陈丽娇 | A kind of sheath built-in pipe suit |
| CN206252721U (en) * | 2016-08-18 | 2017-06-16 | 谢宗贵 | A kind of one-step method CVC |
| CN207707982U (en) * | 2017-06-13 | 2018-08-10 | 浙江伏尔特医疗器械股份有限公司 | A kind of Arterial puncture intubation guide device |
-
2018
- 2018-10-29 CN CN201821766957.7U patent/CN209378262U/en active Active
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- 2019-07-03 WO PCT/CN2019/094631 patent/WO2020087963A1/en not_active Ceased
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112569018A (en) * | 2020-12-31 | 2021-03-30 | 刘劼 | Mouse middle cerebral artery line embolism device |
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| WO2020087963A1 (en) | 2020-05-07 |
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