CN109152911A - The manufacturing method of suction catheter and suction catheter - Google Patents
The manufacturing method of suction catheter and suction catheter Download PDFInfo
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- CN109152911A CN109152911A CN201780032062.2A CN201780032062A CN109152911A CN 109152911 A CN109152911 A CN 109152911A CN 201780032062 A CN201780032062 A CN 201780032062A CN 109152911 A CN109152911 A CN 109152911A
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- pipe
- pump orifice
- section
- vertical direction
- suction catheter
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- 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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- Life Sciences & Earth Sciences (AREA)
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- Engineering & Computer Science (AREA)
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- Heart & Thoracic Surgery (AREA)
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- Animal Behavior & Ethology (AREA)
- General Health & Medical Sciences (AREA)
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Abstract
Suction catheter (1) has the second pipe (41), and the second pipe (41) has the pump orifice (11) of the aspiration lumen (10) extended from peri position side to far side and the far side for being formed in aspiration lumen.Pump orifice has relative to the face inclined shape morphogenetic part orthogonal with the first direction that first inner chamber is extended.So that the amphi position end (11a) of pump orifice on the upside of vertical direction, in the state of so that mode of the peri position end (11b) of pump orifice on the downside of vertical direction is configured with the second pipe, when the section orthogonal with first direction of aspiration lumen at first position (P1) present in peri position end (11b) by pump orifice in a first direction is set as the first section, first section has the bottom (43) extended in the width direction orthogonal with vertical direction and first direction in vertical direction lower end, bottom has 0.3 times or more and 1.0 times of length below of the maximum length in width direction.
Description
Technical field
One aspect of the present invention is related to for intracorporal substance being drawn into suction catheter and suction catheter external and remove
Manufacturing method.
Background technique
A kind of suction catheter known is introduced in vivo, by the negative pressure applied from conduit front end, by intracorporal object
Matter is drawn into external and removes.As such suction catheter, for example, Patent Document 1 discloses a kind of Biochemical analyzers to lead
The pipe in far side with pump orifice is introduced into intravascular and makes it to reaching diseased region by pipe, the thrombus suction catheter, and
It is removed it from the pump orifice aspirate thrombi.
Patent document 1: Japanese Unexamined Patent Publication 2007-236633 bulletin
In such conduit, it is desirable that inhibit the obstruction of the inner cavity as caused by the thrombus pumped out.Therefore, it is proposed to increase
The conduit of the internal diameter of inner cavity.Think that its suction performance of the big conduit of the internal diameter of inner cavity is high, it is suppressed that the obstruction of inner cavity.But if
The tip attainability for considering the pump orifice of conduit, then need further to improve.
Summary of the invention
Therefore, one aspect of the present invention be designed to provide the suction catheter that can be improved pumping efficiency and suction is led
The manufacturing method of pipe.
Suction catheter involved in one aspect of the present invention has pipe, which, which has, extends from peri position side to far side
Inner cavity and be formed in inner cavity far side pump orifice, pump orifice have with relative to the first direction extended with inner cavity just
The face of the friendship morphogenetic part of inclined shape, the amphi position end for making pump orifice on the upside of vertical direction, make the peri position end of pump orifice
In the configuration of pipe on the downside of vertical direction, at first position present in the peri position end by pump orifice in a first direction in
When the section orthogonal with first direction of chamber is set as the first section, the first section vertical direction lower end have with vertical direction
The bottom extended in the width direction orthogonal with first direction, bottom have 0.3 times or more of the maximum length in width direction
And 1.0 times of length below.
Peri position side section of the substances such as the thrombus or foreign matter that are aspirated by above-mentioned suction catheter from pump orifice in a first direction
It is drawn into inner cavity.In other words, when the pipe configured as described above from the side orthogonal with first direction, pass through above-mentioned suction
The substance of catheter suction is drawn into inner cavity by the lower portion of the pump orifice from pipe.It is taken out involved in one aspect of the invention
It inhales in conduit, when the pipe configured as described above from first direction, the bottom of the vertical direction lower end as the first section
Be formed as 0.3 times or more of the maximum length in the width direction orthogonal with vertical direction in the first section and 1.0 times below
Length, therefore the part that substance is drawn into inner cavity is wider.Therefore, even if in pump orifice, substance will not be inhaled at first
Enter to the part of inner cavity and hooks substance.As a result, pumping efficiency can be made to improve.Orthogonal also include in addition, mentioned here
It is substantially orthogonal.
In one aspect of the invention in related suction catheter, maximum length of first section in vertical direction can
Think 0.4 times or more of the maximum length of the first section in the direction of the width and 0.9 times or less.Above-mentioned inner cavity is so-called transverse direction
The long shape of length.Therefore, can expand in the following side of pump orifice suction substance, therefore can be more efficiently from pump orifice
Aspirate substance.
In one aspect of the invention in related suction catheter, the shape in the first section may be polygon,
In the suction catheter of this structure, easy Formation cross-section during fabrication also easily maintains shape after fabrication.
Suction catheter involved in one aspect of the present invention has pipe, which, which has, extends from peri position side to far side
Inner cavity and be formed in inner cavity far side pump orifice, pump orifice have with relative to the first direction extended with inner cavity just
The face of the friendship morphogenetic part of inclined shape, so that pump orifice amphi position end on the upside of vertical direction, make the peri position of pump orifice
In the state that the mode on the downside of vertical direction of end is configured with pipe, the present in the peri position end by pump orifice in a first direction
When the section orthogonal with first direction of inner cavity at one position is set as the first section, the first section has in vertical direction lower end
The bottom extended in the width direction orthogonal with vertical direction and first direction, the shape in the first section are polygon.
Peri position side section of the substances such as the thrombus or foreign matter that are aspirated by above-mentioned suction catheter from pump orifice in a first direction
It is drawn into inner cavity.In other words, when the pipe configured as described above from the side orthogonal with first direction, pass through above-mentioned suction
The substance of catheter suction is drawn into inner cavity by the lower portion of the pump orifice from pipe.It is taken out involved in one aspect of the invention
It inhales in conduit, when the pipe configured as described above from first direction, is formed in the vertical direction lower end in the first section
The bottom extended in width direction, therefore the part that substance is drawn into inner cavity is wider.Therefore, even if in pump orifice, also not
The part that substance is drawn into inner cavity can be hooked into substance at first.As a result, pumping efficiency can be made to improve.In addition, here
Described is orthogonal also including substantially orthogonal.
In one aspect of the invention in related suction catheter, first cross sectional shape of the inner cavity at first position
Proximally predetermined distance can be extended in side.It, being capable of more swimmingly inhaled material in the suction catheter of above structure.
In one aspect of the invention in related suction catheter, pipe can ratio first position in a first direction more
The position for being close to proximal side also has section switching part, the section switching part make section from the first section to the first cross sectional shape
The second different changes of section.In the suction catheter of the structure, the aspirate qualitative change pumped out, which obtains, is easily touched with the inner surface of pipe
It hits, so that the vibration because of caused by suction substance towards the collision of axis becomes strong.Therefore, the operator of suction catheter can perceive the vibration
It is dynamic.As a result, operator will appreciate that the suction conditions of substance.
In one aspect of the invention in related suction catheter, section switching part can also make section from the first section
To second changes of section different from the first cross sectional shape and sectional area.In the suction catheter of the structure, operator can be slapped
Hold the suction conditions of substance.
In the suction catheter involved in a side of the invention, the end side of section switching part can also be located at first
Away from the position within the 20mm of first position on direction.In the suction catheter of the structure, it can more reliably inhibit aspirating
Obstruction near mouthful, and the vibration imparting to pipe is made to become relatively reliable.
In one aspect of the invention in related suction catheter, section switching part be can be in the interior table for forming inner cavity
The tapered portion that at least part in face is formed.In the suction catheter of the structure, it is readily able to Formation cross-section switching part.
In one aspect of the invention in related suction catheter, inner cavity at the peri position end of section switching part with
The shape in the orthogonal section of first direction may be circle.In addition, mentioned here orthogonal also including substantially orthogonal.It cuts in section
Changing portion along a first direction keeps the cross sectional shape of inner cavity round from the change in shape in above-mentioned first section.For flowing in the lumen
For the fluid of dynamic substance, since the flow path shape of inner cavity changes, so as to aspirate large-sized thrombus.By big
The suction of the thrombus of size and make vibration generate, so that the operator of suction catheter can perceive the vibration.As a result, operation
Person will appreciate that the suction conditions of substance.
The length of slave peri position end to the amphi position end of pump orifice can also be set as 2.0mm or more and 10mm or less.The structure
Suction catheter tip attainability it is excellent.
The manufacturing method of suction catheter involved in one aspect of the present invention includes: the first cut off operation, will be along first
Direction extend pipe one end by relative to the face orthogonal with the first direction that inner cavity is extended it is inclined in a manner of cut off；Deform work
Sequence makes the inner cavity deformation of the pipe cut off by the first cut off operation；And second cut off operation, the first cut off operation shape will be passed through
At and by deformation the deformed pipe of process opening the proximal side including peri position end including a part cut off.
In one aspect of the invention in related suction catheter, above or below the vertical direction in pump orifice in
A side, end between the inner surface of pipe and the outer surface of pipe can be relative to the suction face recess that forms pump orifice or convex
Out.
The substances such as the thrombus or foreign matter that are aspirated by above-mentioned suction catheter are by the proximal side from pump orifice in a first direction
Part is drawn into inner cavity.In other words, when the pipe configured as described above from the side orthogonal with first direction, by above-mentioned
The substance of suction catheter suction is drawn into inner cavity by the lower portion of the pump orifice from pipe.It is involved in one aspect of the invention
Suction catheter in, in the configuration of pipe as described above, above or below the vertical direction in pump orifice in a side,
End between the inner surface of pipe and the outer surface of pipe is relative to the suction face recess or protrusion for forming pump orifice.Therefore, convex
Part out, thrombus become easily to enter, and in the part of recess, are cut off with the thrombus of the EDGE CONTACT of pipe, therefore the pumping of thrombus
Suction becomes easy.As a result, being able to suppress the obstruction of the inner cavity as caused by suction substance.
In one aspect of the invention in related suction catheter, it is recessed relative to the suction face for forming pump orifice or convex
The shape of part out can also be defined by curved surface.The thrombus close to pump orifice is easily aspirated as a result,.In addition, can also press down
The damage of blood vessel processed.
It is below the vertical direction in pump orifice, pipe in one aspect of the invention in related suction catheter
End between inner surface and the outer surface of pipe can be relative to the suction face protrusion for forming pump orifice.It is led in the suction of the structure
Guan Zhong, thrombus easily enter inner cavity.
It is above the vertical direction in pump orifice, pipe in one aspect of the invention in related suction catheter
End between inner surface and the outer surface of pipe can be relative to the suction face recess for forming pump orifice.It is led in the suction of the structure
Guan Zhong is cut off with the thrombus of the EDGE CONTACT of pipe, therefore the suction of thrombus becomes easy.
In one aspect of the invention in related suction catheter, can by the straight line in suction face and be connection
When the straight line of the upper end of pipe and the lower end of the pipe is set as reference line, the upper end above the vertical direction in pump orifice is opposite
It is recessed in a manner of symmetrical in reference line, the lower end below the vertical direction in pump orifice is relative to reference line with line pair
The mode of title is protruded.
In one aspect of the invention in related suction catheter, can by pipe along first direction cut off when section
In, the first peri position end of the outer surface side of the end below the vertical direction in inner cavity is located at the of the inner surface side than end
One amphi position end is closer to the position of proximal side, connect the straight line of the first peri position end and the first amphi position end relative to first direction with
2 ° or more and 60 ° ranges below tilt, the second amphi position end of the outer surface side of the end above the vertical direction in inner cavity
It is closer to the position of far side positioned at the second peri position end of the inner surface side than end, connects second amphi position end and the second peri position
The straight line at end is relative to first direction with 2 ° or more and 60 ° range inclinations below.In the suction catheter of such structure,
Become the shape tartly to come to a point on the direction of inhaled material.The substance of pump orifice is inhaled by tartly coming to a point like this
End and be chopped into.Block inner cavity due to hooking biggish substance near pump orifice as a result, being able to suppress.
In one aspect of the invention in related suction catheter, can by pipe along first direction cut off when section
In, the first peri position end of the outer surface side of the end below the vertical direction in inner cavity is located at the of the inner surface side than end
One amphi position end is closer to the position of proximal side, the second amphi position end of the outer surface side of the end above the vertical direction in inner cavity
The position of far side is closer to positioned at the second peri position end of the inner surface side than end, below the vertical direction in pump orifice
, the end between the inner surface of pipe and the outer surface of pipe is recessed relative to the straight line of the first peri position end of connection and the first amphi position end
Or protrude, the end between above the vertical direction in the pump orifice, inner surface of pipe and the outer surface of pipe is relative to connection
Second amphi position end and the straight line at the second peri position end recess or protrusion.Become to be easier to aspirate the thrombus close to pump orifice as a result,.
In one aspect of the invention in related suction catheter, from below vertical direction the case where pump orifice
Under, the curvature of the peri position side end of pump orifice can be less than the curvature of the amphi position side end of pump orifice.In the pumping of such structure
It inhales in conduit, from below vertical direction in the case where pump orifice, curvature (the bending journey of the peri position side end of pump orifice
Degree) be less than pump orifice amphi position side end curvature, i.e., the radius of curvature of the peri position side end of pump orifice be greater than amphi position side end
Radius of curvature.Therefore, the live part that thrombus is cut off in pump orifice becomes larger, therefore easily cuts off thrombus.In addition, referred to herein
Curvature also include the case where the case where curvature is 0, is straight line.As a result, being able to suppress in as caused by suction substance
The obstruction of chamber.
In one aspect of the invention in related suction catheter, from below vertical direction the case where pump orifice
Under, the peri position side end of pump orifice can also be linearly in the width direction orthogonal with first direction and vertical direction both sides
Extend.In the structure of the suction catheter, the peri position side end of pump orifice linearly extends in the direction of the width, therefore easily will
Thrombus cutting.As a result, being able to suppress the obstruction of the inner cavity as caused by suction substance.It is mentioned here orthogonal also including substantially
It is orthogonal.
In the manufacturing method of above-mentioned suction catheter, first position present in the peri position end of pump orifice in a first direction
In first section orthogonal with first direction of the inner cavity at place, it can be readily formed in vertical direction lower end and vertical direction
The bottom extended in the width direction orthogonal with first direction.Have in the first section and is formed with bottom in vertical direction lower end
In the suction catheter of the pipe in portion, the part that substance is drawn into inner cavity is wider.
One aspect of the present invention it is possible to improve pumping efficiency.
Detailed description of the invention
Fig. 1 is cross-sectional view when cutting off suction catheter involved in an embodiment along a first direction.
Fig. 2 is the figure for indicating the cross section structure along the line A-A in Fig. 1.
Fig. 3 is the figure for indicating the cross section structure along the line D-D in Fig. 1.
(a) of Fig. 4 is the figure for indicating the cross section structure along the line C-C in Fig. 1, and (b) of Fig. 4 is indicated along in Fig. 1
Line B-B cross section structure figure.
Fig. 5 is the bottom view of the pump orifice of suction catheter involved in an embodiment from vertical direction lower section.
Fig. 6 is the bottom view of the pump orifice of aspiration lumen involved in another embodiment from vertical direction lower section.
(a) of Fig. 7~Fig. 7 (c) is illustrated to an example of the process of the manufacturing method of the suction catheter of Fig. 1
Figure.
Fig. 8 is the solid of the amphi position side end face of the pump orifice in the second pipe for indicate suction catheter involved in variation 1
Figure.
(a) of Fig. 9 be indicate the pump orifice of the second pipe of suction catheter involved in variation 1 amphi position side end face
(b) of the cross-sectional view in one direction, Fig. 9 is the enlarged cross-sectional view of upper end,
(c) of Fig. 9 is the enlarged cross-sectional view of lower end.
(a) of Figure 10~Figure 10 (d) is one of the cross-sectional view of the aspiration lumen of suction catheter involved in variation 1
Example.
(a) of Figure 11~Figure 11 (h) is one of the cross-sectional view of the aspiration lumen of suction catheter involved in variation 2
Example.
Specific embodiment
Hereinafter, being illustrated referring to suction catheter 1 of the attached drawing to an embodiment.Suction catheter 1 is for being introduced in body
It is interior, and the negative pressure by applying from the nearby side (proximal side) of suction catheter 1 by the Biochemical analyzer generated in the blood vessels to external
And it removes.In addition, in the description of the drawings, marking same appended drawing reference to same element sometimes, and the repetitive description thereof will be omitted.
In the following description, on the first direction that suction catheter 1 is extended, by fore side (Fig. 1 of suction catheter 1
Left side) be defined as proximal side, by the opposite side opposite with the fore side of suction catheter 1 and be introduced into human body side (figure
1 right side) it is defined as far side.In addition, can exist the first direction that suction catheter 1 is extended being set as X-axis in FIG. 1 to FIG. 6
Vertical direction is set as Z-direction by direction, will be in the direction orthogonal with above-mentioned first direction and above-mentioned vertical direction that is, suction
The case where width direction of chamber 10 is set as Y direction and indicates.The first direction that suction catheter 1 is extended also refers to side observation
Length direction when suction catheter 1.
As shown in Figure 1, suction catheter 1 includes aspiration lumen 10, amphi position end is extended to from peri position end；And guidewire lumen
20, extend in the far side of aspiration lumen 10 along aspiration lumen 10.Aspiration lumen 10 becomes from being set to aspiration lumen
The flow path of the thrombus that the pump orifice 11 of amphi position end aspirates etc..Guidewire lumen 20, which becomes, to be used in the pump orifice 11 of aspiration lumen 10
The inner cavity for guiding the seal wire (not shown) to object position to pass through.Hereinafter, the part that aspiration lumen 10 individually extends is known as
The part that aspiration lumen 10 and guidewire lumen 20 extend side by side is known as the second axis 5 by one axis 3.
First axle 3 is made of the first pipe 31 of formation aspiration lumen 10.As shown in Fig. 2, the first pipe 31 is in one direction
The hollow part of upper extension, and be the component that section orthogonal to the longitudinal direction (hreinafter referred to as " section ") is annular shape.The
The inner surface 31a of one pipe 31 forms above-mentioned aspiration lumen 10, and above-mentioned aspiration lumen 10 extends from peri position side to far side.First pipe
31 are formed by resin material.In the example of resin material, including from polyamide, polyamide elastomer, polyurethane resin,
At least one resin selected in polyether resin, polyester resin, polyimide resin and polyvinyl resin.
First pipe 31 be also possible to include internal layer and outer layer component.In the example of material for forming internal layer, including it is poly-
Tetrafluoroethene (PTFE), tetrafluoroethylene-perfluoroalkyl vinyl ether copolymer (PFA), tetrafluoraoethylene-hexafluoropropylene copolymer
(FEP), the fluorine tree such as ethylene-tetrafluoroethylene copolymer (ETFE), polyvinylidene fluoride (PVDF), polytrifluorochloroethylene (PCTFE)
Rouge, high density polyethylene (HDPE) etc..In the example of material for forming outer layer, including polyamide elastomer, polyester elastomer, polyolefin
The elastomers such as elastomer.
As the first pipe 31, woven tube also can be used.It includes based on tree that woven tube, which is in the pipe by formation such as resins,
The pipe of the braiding structure of rouge or metal.Braiding structure refer to around the inner cavity that pipe is for example set based on the threadiness knit out
The structure of object.Braiding structure is also possible to the structure for being wound with the structure of single line material or configuring along inner cavity.Constitute braiding
The material or structure of the braided fabric of pipe are not intended to limit the effect of one aspect of the present invention, thus can use various materials or
Person's structure.As the material of braided fabric, it is able to use metal, is able to use 1 or more wires materials is processed into braiding
Metal made of object, the metal wire rod be by by the stainless steels such as SUS304, SUS316, spring steel, piano wire, oil-tempered wire,
Co-Cr alloy, Ni-Ti alloy etc. are processed into made of the various cross sectional shapes such as circle, ellipse, quadrangle.
First axle 3, which can also be, is configured with the two-layer pipe of other pipes in the inside of the first pipe 31 or outside.
As shown in Figure 1, the peri position end 3b in first axle 3 is provided with sleeve 35.Sleeve 35 for example via Y word connector (not
Diagram) and connect with suction units (not shown) such as syringes.The negative-pressure ward power generated by suction unit is applied by sleeve 35
It is added to the aspiration lumen 10 of the first pipe 31.Sleeve 35 is for example formed by styrene-butadiene copolymer.The peri position end of first pipe 31
31b is bonded by adhesive 37 and sleeve 35.Adhesive 37 is, for example, polyurethane binder.The aspiration lumen 10 of first pipe 31 with
The opening portion 35a of sleeve 35 is connected to.
Second axis 5 is formed by the second pipe (pipe) 41 and third pipe 61.Second pipe 41 has from peri position side to far side along the
The aspiration lumen 10 that one direction extends, third pipe 61 have the guidewire lumen extended in a first direction from peri position side to far side
20.In addition, for ease of description, the second pipe 41 and third pipe 61 are as shown in Fig. 3 etc., to be the part different from matrix resin 71
State show, but the shape of the second pipe 41 and third pipe 61 can not also terminate in shape shown in Fig. 3.That is, the second pipe 41,
The boundary of three pipes 61 and matrix resin 71 is also possible to indefinite state.
Second pipe 41 is the hollow part extended in a first direction, is formed by resin material.Aspiration lumen 10 is by the second pipe
41 inner surface 41a is formed.The example and the material in first pipe 31 of formation explained above for forming the resin material of the second pipe 41
The example of material is identical.Similarly, the second pipe 41 be also possible to include internal layer and outer layer component, material can also with first pipe
31 example is identical.In addition, similarly, as the second pipe 41, woven tube also can be used, the example of material can also be with
One pipe 31 is identical.
The interconnection (not shown) of the amphi position end (not shown) of first pipe 31 and the peri position end of the second pipe 41, the first pipe 31
Aspiration lumen 10 and the aspiration lumen 10 of the second pipe 41 are interconnected.In addition it is also possible to pass through first axle 3 and the configuration of the second axis 5
Same pipe, such as the second pipe 41 can also extend to the second axis 5 from first axle 3.
First pipe 31 can be used as a root canal with the second pipe 41 and be integrally formed, and different more can also be connected halfway
Pipe.In the case where being integrally formed, the first pipe 31 can be formed with the second pipe 41 by same resin material.The case where connecting
Under, the pipe formed by same resin material can be connected to each other, it can also be by the pipe formed by different resin materials each other
Connection.Coupling part can be used adhesive or connection member and pipe be connected to each other, and pipe can also be made to melt and connect.
As shown in Figure 1, the end face 41b of the far side of the second pipe 41 is tilted.Specifically, the end face of the far side of the second pipe 41
41b is tilted in such a way that the direction (first direction) extended relative to the second pipe 41 is at defined angle.Specifically, as schemed
Shown in 1, the end face 41b of the far side of the second pipe 41 by upper end in far side and in a manner of lower end is in proximal side from far side direction
Proximal side continuously tilts.End face 41b opening, and be connected to aspiration lumen 10.A part of end face 41b can be closed knot
Structure.It is above-mentioned to can be when being tilted in side view linear, it can also be bent.It can also be the combination of straight line and curve.End face 41b is only
If upper end is in far side and lower end is in the shape of proximal side, step difference etc. can be set and change with making shaped step shape,
It is also possible to the combined shaped of straight line and curve.
The amphi position end of second pipe 41 is provided with pump orifice 11.Above-mentioned pump orifice 11 includes a part of above-mentioned end face 41b
Or whole and formed.Pump orifice 11 is arranged along the length direction of the second pipe 41, and one end configuration is in far side, other end configuration
In proximal side.In addition, length L0 (referring to Fig.1) example on the first direction of the slave peri position end 11b to amphi position end 11a of pump orifice 11
It such as can be 2.0mm or more and 10mm or less.As described above, since the end face 41b of the amphi position end of the second pipe 41 is tilted,
The pump orifice 11 for being set to the end face is formed as the inclined state in the face orthogonal with first direction relative to aspiration lumen 10.It is right
For the second pipe 41, in side view, the amphi position end 11a of pump orifice 11 is on the upside of vertical direction, the peri position end 11b of pump orifice 11
On the downside of vertical direction.
As shown in figure 5, in pump orifice 11, including the peri position end 11b including proximal side when from direction under vertical
The curve shape of peri position side end 11d can be with the curve shape of the amphi position side end 11c including amphi position end 11a not
Together.Specifically, the sweep of the curve shape of peri position side end 11d can be greater than the curve shape of amphi position side end 11c
Sweep.That is, the curvature (curvature) of the curve shape of peri position side end 11d can be less than the curved shape of amphi position side end 11c
The curvature (curvature) of shape.With this configuration, the live part that thrombus is cut off in pump orifice 11 becomes larger, so that thrombus is easily cut
It is disconnected.As a result, being able to suppress since thrombus etc. aspirates the obstruction of aspiration lumen 10 caused by substance.For example, can will aspirate
The curvature of the peri position side end 11d of mouth 11 is set as 1.74 × 103Rad/m or less.Thereby, it is possible to more improve obstruction to inhibit effect
Fruit.Rad/m is the unit of curvature, degree of a representation (angle)/perimeter (length).
An example alternatively, as shown in fig. 6, when from direction under vertical including proximal side
The curve shape of peri position side end 111d including the 11b of peri position end can be formed as linear along width direction (Y direction).
The example of the case where this is also the curvature for further decreasing proximal side (curvature 0).According to this structure, thrombus is easily sucked mouth 11
It hooks, and the live part that thrombus is cut off in pump orifice 11 becomes larger, so that thrombus is easily cut off.As a result, being able to suppress
Since thrombus etc. aspirates the obstruction of aspiration lumen 10 caused by substance.
As shown in Figure 1, third pipe 61 is the hollow part extended in one direction, formed by resin material.In seal wire
Chamber 20 is formed by the inner surface 61a of third pipe 61.Opening 21 is respectively arranged in the amphi position end of third pipe 61 and peri position end and is opened
Mouth 22.Opening 21 and opening 22 are formed along the face orthogonal with first direction of aspiration lumen 10.Third pipe 61 is by resin material
It is formed.Form the example phase of the example and the material for the first pipe of formation 31 being illustrated above of the resin material of third pipe 61
Together.Similarly, third pipe 61 be also possible to include internal layer and outer layer component, material can also be with the example phase of the first pipe 31
Together.In addition, similarly, as third pipe 61, woven tube also can be used, the example of material can also be with 31 phase of the first pipe
Together.
First pipe 31, axis, the second pipe 41 and third pipe 61 be also possible to include various kinds of resin material, other materials it is more
Layer structure.Using various kinds of resin material, resin material can be identical, can also be mutually different.In addition, for example
Metal ring or plate etc. can be configured to the part or part in addition to this in face of inner cavity of pipe.Also it can will set
Rouge system or metal Filament winding are in pipe.
The label (not shown) formed by the material that X-ray (radioactive ray) can not transmit can also be set in third pipe 61.
Label is, for example, the cricoid component formed by gold, platinum, tungsten and alloy comprising platinum (Pt) and indium (Ir).Label is with circumferentially
The mode for surrounding third pipe 61 is installed on third pipe 61.Operator can grasp the second axis 5 based on X-ray transmission image as a result,
Amphi position end position.
In the second axis 5, the second pipe 41 is integrally formed with third pipe 61.Specifically, third pipe 61 is to be arranged in second
State above the vertical direction of pipe 41 is integrated by matrix resin 71 formed by resin material.In present embodiment
In, matrix resin 71 is formed by thermoplastic resin, such as polyamide elastomer (PAE) or polyamide elastomer.Matrix resin
71 for example form and the collapsible tube to the second pipe 41 of covering and third pipe 61 heats.The outer of the second axis 5 is formed as a result,
Surface (shape) 71a.Here, it is indefinite to refer to that the boundary of the second pipe 41, third pipe 61 and matrix resin 71 can be for integration
State, can also be as shown in figure 3, each boundary be specific.It can be different by the second pipe 41, third pipe 61 and tube material
Three part integrations, in component can also form two inner cavities and by three in one.It can also be only by the second pipe
41,61 integration of third pipe.In this case, forming matrix resin 71 by the second pipe 41, the third pipe 61 after fusing.
It, can edge by the section of the inner surface 41a of the second pipe 41 aspiration lumen 10 formed as shown in Fig. 1, Fig. 3 and Fig. 4
Direction from proximal side towards far side change.By the peri position end 11b of the pump orifice 11 on the first direction of the second pipe 41
The section of aspiration lumen 10 at existing first position P1 is set as the first section.As shown in figure 3, above-mentioned first section is by one
To the side 42 of arc-shaped, 42, linearly prolong in vertical direction (Z-direction) lower end and in width direction (Y direction)
The bottom 43 and top 44 that is opposed with bottom 43 and linearly extending in width direction (Y direction) stretched are formed.The
One section is that circular lower part and top pass through bottom 43 and top 44 shape made of intercepting respectively.
Here, the length W in above-mentioned first section in the width direction (Y direction) of bottom 43 is width in the first section
Maximum length W on directionmax0.3 times or more and 1.0 times of length below.That is, thrombus to be drawn into the portion of aspiration lumen 10
Dividing forms wider.It therefore, will not be in the part that thrombus is drawn into aspiration lumen 10 at first even if in pump orifice 11
Hook thrombus.As a result, can be improved pumping efficiency.
It, can be easily by thrombus by the way that the first section is set as defined shape in the suction catheter 1 of present embodiment
(suction substance) is cut off in the peri position end side of pump orifice, so as to inhibit large-scale thrombus obstruction aspiration lumen 10.
In addition, the maximum length h in the vertical direction in the first section is than the maximum length W in width directionmaxIt is short.Into one
Step, the shape that the first section of present embodiment can be long for lateral length.Maximum length h in vertical direction can be width
Maximum length W on directionmax0.4 times or more and 0.9 times or less.Thereby, it is possible to expand aspirate thrombi in pump orifice 11
Following side, therefore can be more efficiently from 11 aspirate thrombi of pump orifice.The second pipe 41 with such section for example can
It is manufactured in the following manner, it may be assumed that be inserted into section shape to the pipe that the cross sectional shape produced by extrusion forming is substantially annular shape
The core component of the stainless steel of shape shape roughly the same with the first section, and the pipe is heated.In addition, the lead in the first section
The maximum length h on direction that hangs down may be the maximum length w or more in width direction.
As shown in Figure 1, the shape in the first section of aspiration lumen 10 can proximally side extends regulation from first position P1
Distance L1.Thereby, it is possible to more swimmingly inhaled materials.Can also proximal side be leaned on than first position P1 in a first direction
Position, in a first direction from second position P2 Formation cross-section switching as starting point of first position P1 separation predetermined distance L1
Portion 15, section switching part 15 switch from the first section to the second section (referring to (b) of Fig. 4) different from the first cross sectional shape.
First position P1 can for example be set as 2mm~20mm with second position P2 distance L1.In addition, under distance L1
Limit value can be set as 2mm or more, and the upper limit value of the distance can be set as 10mm or less.In the present embodiment, section switching part
15 from the second position P2 of first position P1 separation 20mm as starting point to configure in a first direction.Thereby, it is possible to relatively reliable
Ground inhibition is blocked as caused by the thrombus near pump orifice 11, and becomes relatively reliable to the vibration of the second pipe 41 imparting.
Vibration imparting, which becomes relatively reliable, is easily collided with the inner surface of pipe because the aspirate qualitative change pumped out obtains, thus because of aspirate
Vibration caused by collision of the matter towards axis becomes strong.
In the present embodiment, section switching part 15 can also make the cross sectional shape of aspiration lumen 10 from the first section (ginseng
According to Fig. 3) change to second section (referring to (b) of Fig. 4) different from the first cross sectional shape and sectional area.Section switching part 15
It can be the tapered portion at least part formation of the inner surface 41a for the second pipe 41 for forming aspiration lumen 10.Section switching
Portion 15 is formed in a manner of the second position P2 to the third place P3 from the second pipe 41.By this change in shape, thrombus becomes
Easily it is cut off.In addition, this change in shape also has the efficiency for promoting Biochemical analyzer and inhibits thrombus occur in the second pipe 41
The effect for the case where accumulating and blocking aspiration lumen 10.
Section switching part 15 can be made in suction and being set to the tapered portion of inner surface (inner wall) of aspiration lumen 10
The cross sectional shape of chamber 10 gently changes, and cutting for aspiration lumen 10 can also be made by the step difference etc. being arranged instead of tapered portion
Face change in shape.It can be set as this trapezoidal or step difference section switching part 15.From first position P1 separation 5mm's
The area of cross sectional shape at the P2 of the second position can for 0.8 times or more of the area in the first section at the P1 of first position and
1.3 times or less.The variation of the shape of aspiration lumen not only can be the variation that sectional area becomes smaller from far side to proximal side, can also
To be the variation to become larger.Operator's perception of conduit 1 is sucked by the vibration that the variation of flow path shape generates, to operate
Person will appreciate that the suction conditions of thrombus.In the third place P3, by the inner surface 41a of the second pipe 41 aspiration lumen 10 formed
Cross sectional shape is roughly circular.The shape in second section of aspiration lumen 10 extends to peri position end 3b, the i.e. sleeve of first axle 3
35.In addition, double dot dash line shown in (b) of (a) of Fig. 4 and Fig. 4 indicates a part of the inner surface 41a in the first section that is, bottom
Portion 43.
Alternatively, can also make between the third place P3 and sleeve 35 aspiration lumen 10 shape or
Sectional area (size) variation is one or many.For the suction catheter 1 of present embodiment, due to the section of aspiration lumen 10
Shape or sectional area change, therefore the inner surface of the suction easy impact tube of substance pumped out, so as to grasp thrombus
Suction conditions.The variation of cross sectional shape or sectional area can be the variation that far side becomes smaller and proximal side becomes larger.According to
On the way, can be appropriately combined the variation and proximal side that far side becomes smaller and proximal side becomes larger become smaller and variation that far side becomes larger.
The suction catheter 1 of present embodiment can be more swimmingly introduced into intravascular as a result,.
In addition, in the present embodiment, since the length of the slave peri position end 11b to amphi position end 11a of pump orifice 11 is 2.0mm
Above and 10mm is hereinafter, therefore tip attainability is excellent.If the length ratio of the slave peri position end 11b to amphi position end 11a of pump orifice 11
2.0mm is short, then thrombus easily blocks in pump orifice, if suction force becomes very weak than 10mm long.
Then, an example of the manufacturing method of suction catheter 1 is illustrated.It is first in the manufacture of suction catheter 1
First, prepare the first pipe 31, the second pipe 41 and third pipe 61.Each pipe is formed by above-mentioned material by extrusion forming.Then, exist
61 adjustment notch of third pipe.Label is fixed by caulking to third pipe 61.
Then, as shown in (a) of Fig. 7, one end of the second pipe 41 extended in a first direction is cut off.Cut-off one end is
Amphi position end, section become pump orifice.By the cutting, the section of the second pipe 41 be formed as relative to aspiration lumen 10 with
The orthogonal face of first direction tilts (the C1: the first cut off operation of cutting line).Then, as shown in (c) of Fig. 7, pump orifice 11 is cut off
A part (the C2: the second cut off operation of cutting line) by proximal side including peri position end.At this point, such as (b) institute of Fig. 7
Show, the core component 80 of stainless steel can be inserted into the second pipe 41, the core component of resinousness also can be inserted.Core component can be
Hollow, it is also possible to solid.The core component 80 selects the shape in section with cooperating the cross sectional shape of desired pump orifice.
At this point, the aspiration lumen 10 of the second pipe 41 can be deformed by pressurization, the fixation etc. from core component or outside.Make to take out
Inner cavity deformation is inhaled come in the case where forming pump orifice, pump orifice successively passes through the first cut off operation, deformation process and the second cutting
Process and formed.The sequence of aftermentioned aspiration lumen deformation process and the second cut off operation may be reversed.
Then, the amphi position end (the first connection process) of the first pipe 31 is connected at the peri position end of the second pipe 41.Next, connection
There is the second pipe 41 of the first pipe 31 to be arranged in parallel with third pipe 61.Specifically, with the amphi position end of third pipe 61 relative to second
The amphi position end of pipe 41 is more arranged to far side mode outstanding.The method that first pipe is connect with the second pipe can be properly selected
It bonded by adhesive, pipe heat be allowed to welding etc..
Then, the core component of stainless steel is inserted into the second pipe 41 and third pipe 61.The section of the core component is circle.Core
The cross sectional shape of component can also select shape than circular as needed.It is shunk in the second pipe 41 and the covering of third pipe 61
It manages and heats.Collapsible tube can be formed by heat-resistant resin.Such as it there are olefin-based resin.As a result, by the second pipe 41 and
Three pipes, 61 welding and it is integrated.Matrix resin 71 (the second connection process) is formed as a result,.Then, it is inserted into the second pipe 41 stainless
The core component of steel.The section of the core component have with it is shown in Fig. 3, formed by the inner surface 41a of the second pipe 41 first section
The roughly the same cross sectional shape in face.The example of cross sectional shape as the core component that can choose has the figure being described in detail below
Shape shown in 10 and Figure 11.The core component of stainless steel is inserted into third pipe 61.It can also will be in above-mentioned heating process
The core component used uses with keeping intact.When being heated, the second pipe 41 is also heated covering collapsible tube, the second pipe 41 it is interior
The shape of surface 41a is shaped to the shape of the core component of insertion.It is formed in the suction with the first section shown in Fig. 3 as a result,
Chamber 10 (aspiration lumen deformation process).
Core component with the cross sectional shape roughly the same with above-mentioned first section is only inserted into the far side of the second pipe 41.
It is inserted into the core component and the heat transfer that is heated is to the part for being not inserted into the core component of the second pipe 41, taper is consequently formed
The section switching part 15 of shape.By transmitting from the core component with the cross sectional shape roughly the same with above-mentioned first section
Heat, to be first circular part to by with roughly the same with above-mentioned first section by the section that core component is formed
The first section that the core component of cross sectional shape is formed continuously deforms, and forms the section switching part 15 of conical by its shape
Finally, connecting sleeve 35 (third connection process) by adhesive 37 at the peri position end of the first pipe 31.By above
Process, manufactured suction catheter 1.
More than, an embodiment is illustrated, one aspect of the present invention is not limited to the above embodiment.
1 > of < variation
Main (c) for using Fig. 8~Fig. 9, is illustrated suction catheter 1 involved in variation.For variation institute
For the suction catheter 1 being related to, in the suction catheter 1 of above embodiment, above the vertical direction in pump orifice 11 or
Upper end 45a between a side below person, the inner surface 41a of the second pipe (pipe) 41 and the outer surface 41c of the second pipe 41 and
Lower end 45b is relative to the suction face F recess or protrusion for forming pump orifice 11.In addition, being omitted in (c) of Fig. 8~Fig. 9
Form the diagram of the third pipe 61 of guidewire lumen 20.
Hereinafter, being described in detail to variation 1.As shown in (a) of Fig. 8 and Fig. 9~Fig. 9 (c), the second pipe 41
End face 41b by far side is the part including the end face of the second pipe 41 and the end face of aspiration lumen 10.In the second pipe 41
Amphi position end 45 in, be upper end 45a on the upside of vertical direction, be lower end 45b on the downside of vertical direction.In leaning on for the second pipe 41
A side in above or below the vertical direction of far side, the inner surface 41a of the second pipe 41 and the outer surface 41c of the second pipe 41
Between upper end 45a and lower end 45b in the section orthogonal with width direction (Y direction), relative to connection second manage
The farthest site in 41 section and the straight line recess or protrusion in nearest site.That is, upper end of second pipe 41 at pump orifice 11
45a and lower end 45b is not a plane, and is formed by multiple planes or curved surface.As a result, in upper end 45a and lower end 45b
Form convex-concave.The part of protrusion in upper end 45a and lower end 45b, thrombus easily enter and are not easy to cause to damage to blood vessel
Evil, the part of the recess in upper end 45a and lower end 45b are cut off, therefore with the thrombus of the EDGE CONTACT of the second pipe 41
The suction of thrombus becomes easy.
The recess or protrusion of the upper end 45a or lower end 45b of second pipe 41 are also the recess relative to pump orifice 11
Or protrusion.Suction face F refers to form the plane or curved surface of pump orifice 11, by the amphi position side end 11c and proximal side of pump orifice 11
End 11d is formed.In the case where the second pipe 41 are observed in side, when indicating pump orifice 11 with straight line, suction face F is plane,
In pump orifice 11 represented by curve, suction face F is curved surface.In general, pump orifice 11 by with razor by one of the second pipe 41
Divide and reams or a part of the second pipe 41 is cut with scissors and is formed.In this case, the wall thickness part of the second pipe 41 from
Peri position end is once cut off to amphi position end, to form pump orifice 11.
The recess of the upper end 45a or lower end 45b of second pipe 41 or the shape of protrusion can be curved.Curved is
Refer to wall thickness part (the inner surface 41a and appearance of the second pipe 41 of the end of the second pipe 41, the second pipe 41 for forming pump orifice 11
Part that is, upper end 45a and lower end 45b between the 41c of face) be, for example, domed shape protrusion or concave, semi-circular cylindrical
The case where shape of protrusion or recess.By the way that upper end 45a or lower end 45b is shaped as recess or protrusion, energy
Enough thrombus easily aspirated close to pump orifice 11, or inhibit the damage of blood vessel.
As shown in figure 8, also may be at the interior table of the second pipe 41 above the vertical direction (Z-direction) of pump orifice 11
Upper end 45a between face 41a and the outer surface 41c of the second pipe 41 is in relative to the suction face F recess for forming pump orifice 11
Lower end between below the vertical direction of pump orifice 11, the second pipe 41 the inner surface 41a and outer surface 41c of the second pipe 41
45b is protruded relative to suction face F.In addition, by the straight line on suction face F and be connect the second pipe 41 end face 41b upper end
The first of the outer surface side of the lower end 45b of the end face 41b of the second amphi position end 46a and the second pipe 41 of the outer surface side of portion 45a
When the line of peri position end 46b is set as reference line BL, the upper end 45a above the vertical direction in pump orifice 11 is relative to reference line
BL is recessed in a manner of symmetrical, and the lower end 45b below the vertical direction in pump orifice 11 is relative to reference line BL with line
Symmetrical mode is protruded.
In addition, in the present embodiment, as shown in (c) of (a) of Fig. 9, (b) of Fig. 9 and Fig. 9, by 41 edge of the second pipe
In section when first direction (X-direction) is cut off, the second of the outer surface side of the upper end 45a of the end face 41b of the second pipe 41
The second peri position end 46c (the amphi position end 11a of pump orifice 11) that amphi position end 46a is located at the inner surface side than upper end 45a leans on amphi position
First peri position end 46b of the position of side, the outer surface side of the lower end 45b of the end face 41b of the second pipe 41 is located at than lower end 45b
Inner surface side the first amphi position end 46d (the peri position end 11b of pump orifice 11) lean on proximal side position.
The upper end 45a of the end face 41b of second pipe 41 can also relative to first direction (X-direction) with 2 ° or more and
60 ° of range (angle [alpha]) inclinations below.Angle [alpha] be connect the second amphi position end 46a and the second peri position end 46c straight line BL1, with
Angle formed by the inner surface 41a of second pipe 41.The lower limit value of the angle [alpha] is, for example, 10 ° or more, and upper limit value is, for example, 30 ° or less.
In the same manner as the 45a of upper end, the lower end 45b of the end face 41b of the second pipe 41 can also relative to first direction (X-direction) with
2 ° or more and 60 ° range (angle [alpha]) inclinations below.Angle [alpha] is the straight of connection the first peri position end 46b and the first amphi position end 46d
Angle formed by line BL2, the inner surface 41a with the second pipe 41.The lower limit value of the angle [alpha] is, for example, 10 ° or more, and upper limit value is, for example,
30 ° or less.
Upper end 45a above the vertical direction of pump orifice 11 between inner surface and the outer surface 41c of the second pipe 41 can also
With the straight line BL1 recess or protrusion relative to connection the second peri position end 46c and the second amphi position end 46a.In addition, the lead of pump orifice 11
Hanging down the lower end 45b below direction between inner surface and the outer surface 41c of the second pipe 41 can also be relative to connecting the first amphi position
Hold the straight line BL2 recess or protrusion of 46d and the first peri position end 46b.By relative to the second peri position end 46c of connection and the second amphi position
It holds the straight line BL1 of 46a or connects the straight line BL2 recess of the first amphi position end 46d and the first peri position end 46b or the structure of protrusion, energy
It is enough more to improve pumping efficiency.
In addition, in above-mentioned variation 1, enumerate connection the second amphi position end 46a and the second peri position end 46c straight line BL1 and
Connect the straight line BL2 of the first peri position end 46b and the first amphi position end 46d relative to first direction, i.e. the inner surface 41a of the second pipe 41
The direction extended is illustrated with 2 ° or more the and 60 ° inclined examples of range below, but the inclination be also possible to with
The inclined structure of the different range of above range.
Then, as the example that upper end 45a and lower end 45b are formed as to recess or the method protruded, to general
Upper end 45a is formed as being recessed, and a 45b example for being formed as the method for protrusion in lower end is illustrated.That is, for passing through
The suction catheter 1 that the manufacturing method of above embodiment produces is inserted into core component to the second pipe 41 extended in a first direction
80 (insertion processes).The core component of insertion be preferably deformable material and outer diameter less than the second pipe aspiration lumen 10.It connects
, make the second pipe 41 deformation (deformation process) for inserting core component 80.For example, its change can be made in a manner of squeezing the second pipe
Shape.Then, deformation process in deformed second pipe 41 one end relative to the orthogonal with first direction of aspiration lumen 10
The inclined mode in face be cut off.If after the cut off operation, from the second pipe 41 remove core component 80, then the second pipe 41 by from
It is discharged in above-mentioned deformation.As a result, as shown in (a) of Fig. 8 and Fig. 9, the upper end above the vertical direction in pump orifice 11 is formed
Portion 45a is relative to suction face F recess, the lower end 45b phase below the vertical direction in pump orifice 11 for forming pump orifice 11
For the second pipe 41 of suction face F protrusion.Any one in upper end 45a or lower end 45b can also be only cut off, its phase is made
It is recessed for suction face F or protrudes.
The end of second pipe is formed as being recessed or protrusion can be in the pipe managed first, the second pipe and third pipe are all
Be formed by connecting after being integrated and carry out, can also before connecting the second pipe 41 with third pipe 61 and by the second pipe 41 and
It is carried out before the connection of first pipe 31.After connecting the second pipe 41 with third pipe 61, the end of the second pipe is formed as being recessed
Or in the case where protrusion, the core component or cover of protection third pipe also can be used.Suction involved in variation has been manufactured as a result,
Conduit 1.
Alternatively, it is also possible to by suction catheter 1 involved in above embodiment as documented by above embodiment that
After sample manufacture, by implementing the processing of cutting or melting etc. to upper end 45a and lower end 45b, thus by upper end 45a
Be formed as being recessed or protrude with lower end 45b.Even such method can also manufacture suction catheter involved in variation
1。
2 > of < variation
In the above-described embodiment, as shown in figure 3, enumerate the first section by a pair of of arc-shaped side 42,42, in vertical
Bottom 43 that direction lower end linearly extends along width direction and opposed with bottom 43 and linear along width direction
The example that the top 44 that shape extends is formed is illustrated, but one aspect of the present invention is not limited to this.For example, aspiration lumen
10 the first section, which is also possible to bottom 143A, 143B, 143C, 143D shown in (d) of (a) such as Figure 10~Figure 10, has width
Spend the shape of 0.3 times or more and 1.0 times length below of the maximum length on direction.
That is, as Figure 10 (a) shown in, the first section can also by side 142A, 142A of a pair of of arc-shaped, in vertical side
The bottom 143A that linearly extends to lower end along width direction and it is opposed with bottom 143A and along width direction in straight
The top 144A that threadiness extends is formed.First section is that elliptical lower part and top are distinguished by bottom 143A and top 144A
Shape made of interception.
In addition, the length of the bottom 143B in the first section can also be shorter than top 144B as shown in (b) of Figure 10.First
Section becomes the shape that circular lower part and top are intercepted respectively by bottom 143B and top 144B.In addition, such as Figure 10
(c) shown in, the length of the bottom 143C in the first section can be longer than top 144C.In addition, as shown in (d) of Figure 10, first section
The side in face can be linearly.
Even such first section, the part that thrombus is drawn into aspiration lumen 10 is also relatively wide.Therefore, thrombus easily quilt
It is drawn into aspiration lumen 10 from pump orifice 11, so as to inhibit the obstruction of the aspiration lumen 10 near pump orifice 11.In addition,
First section can be set as symmetrical shape.Thereby, it is possible to significantly ensure the size of pump orifice relative to pipe.In addition,
Also it can according to need and the first section be set as asymmetrical shape or unsetting.
3 > of < variation
The shape in the first section is set as polygon by the shape that also can replace the first section of above embodiment, the
One section can also have the bottom extended in the width direction orthogonal with vertical direction and first direction in vertical direction lower end
Portion.Here polygon refers to including by the vertical side of the length direction of core component in an example with above-mentioned manufacturing method
To cross sectional shape be polygon and the polygon that is formed.In addition, the suction catheter of present embodiment is due to being formed by resin, because
This is soft pipe, and each vertex of polygon is indefinite sometimes displays.The length that polygon can be each side is identical just
Polygon is also possible to the polygon that each side is arbitrary length.For example, as shown in figure 11, it can be by the shape in the first section
It is set as the various polygons with bottom 243A, 243B, 243C, 243D, 243E, 243F, 243G and 243H.First section is
Make be such polygon shape, thrombus is easily also drawn into aspiration lumen 10 from pump orifice 11, and pump orifice can be prevented
The obstruction of aspiration lumen 10 near 11.In addition, the shape in the first section is to aspirate to lead involved in the variation of polygon
Guan Zhong, easily Formation cross-section during fabrication, and the shape is easily maintained after fabrication.
Other variations of < >
In addition, passing through as shown in figure 3, listing the second pipe 41 with third pipe 61 in above embodiment or variation
The integrally formed example of matrix resin 71, but it is not limited to this.For example, it can be the second pipes 41 to pass through bonding with third pipe 61
The structure that agent etc. is fixed to each other.
Various embodiments and variation described above are each other in the model for the purport for not departing from one aspect of the present invention
Enclosing interior can carry out various combinations.
Description of symbols
1 ... suction catheter；3 ... first axles；5 ... second axis；10 ... aspiration lumens (inner cavity)；11 ... pump orifices；11a ... is remote
Position end；11b ... peri position end；11c ... amphi position side end；11d ... peri position side end；15 ... section switching parts；20 ... guidewire lumens；
31 ... first pipes；41 ... second pipes (pipe)；41a ... inner surface；43 ... bottoms；61 ... third pipes；71 ... matrix resins；143A,
The bottom 143B, 143C, 143D ...；The bottom 243A, 243B, 243C, 243D, 243E, 243F, 243G, 243H ...；P1 ... first
It sets.
Claims (21)
1. a kind of suction catheter, has pipe, the pipe has the inner cavity extended from peri position side to far side and is formed in described
The pump orifice of the far side of inner cavity, wherein
The pump orifice has morphogenetic with the face inclined shape orthogonal relative to the first direction extended with the inner cavity
Part,
Make the amphi position end of the pump orifice on the upside of vertical direction, making the peri position end of the pump orifice on the downside of vertical direction
It, will be described interior at first position present in the peri position end of the pump orifice in said first direction in the configuration of the pipe
When the section orthogonal with the first direction of chamber is set as the first section,
First section has in vertical direction lower end in the width side orthogonal with the vertical direction and the first direction
The bottom upwardly extended,
The bottom has 0.3 times or more and 1.0 times of length below of the maximum length in the width direction.
2. suction catheter according to claim 1, wherein
Maximum length of first section in the vertical direction be first section in the width direction most
0.4 times or more and 0.9 times or less of long length.
3. suction catheter according to claim 1 or 2, wherein
The shape in first section is polygon.
4. a kind of suction catheter, has pipe, the pipe has the inner cavity extended from peri position side to far side and is formed in described
The pump orifice of the far side of inner cavity, wherein
The pump orifice has morphogenetic with the face inclined shape orthogonal relative to the first direction extended with the inner cavity
Part,
So that the pump orifice amphi position end on the upside of vertical direction, make the peri position end of the pump orifice on the downside of vertical direction
Mode be configured in the state of the pipe, will be first present in the peri position end of the pump orifice in said first direction
When the section orthogonal with the first direction of the inner cavity at the place of setting is set as the first section,
First section has in vertical direction lower end in the width side orthogonal with the vertical direction and the first direction
The bottom upwardly extended,
The shape in first section is polygon.
5. suction catheter described according to claim 1~any one of 4, wherein
Proximally side extends predetermined distance to the shape in first section of the inner cavity at the first position.
6. suction catheter described according to claim 1~any one of 5, wherein
The position that first position described in the ratio of the pipe in said first direction is closer to proximal side also has section switching part,
The section switching part makes section from first section to second changes of section different from first cross sectional shape.
7. suction catheter according to claim 6, wherein
The section switching part makes section from first section to different from first cross sectional shape and sectional area second
Changes of section.
8. suction catheter according to claim 6 or 7, wherein
The end side of the section switching part is located in said first direction away from the position within the first position 20mm.
9. the suction catheter according to any one of claim 6~8, wherein
The section switching part is the tapered portion formed in at least part for forming the inner surface of the inner cavity.
10. the suction catheter according to any one of claim 6~9, wherein
The shape in the section orthogonal with the first direction of the inner cavity at the peri position end of the section switching part is circle
Shape.
11. suction catheter described according to claim 1~any one of 10, wherein
The length of the slave peri position end of the pump orifice to amphi position end is 2.0mm or more and 10mm or less.
12. suction catheter described according to claim 1~any one of 11, wherein
The inner surface of a side in above or below vertical direction in the pump orifice, described pipe and the appearance of the pipe
End between face is relative to the suction face recess or protrusion for forming the pump orifice.
13. suction catheter according to claim 12, wherein
The recess or the shape of protrusion are defined by curved surface.
14. suction catheter according to claim 12 or 13, wherein
End phase between the inner surface of pipe below vertical direction in the pump orifice, described and the outer surface of the pipe
For forming the suction face protrusion of the pump orifice.
15. suction catheter described in any one of 2~14 according to claim 1, wherein
End phase between the inner surface of pipe above vertical direction in the pump orifice, described and the outer surface of the pipe
For forming the suction face recess of the pump orifice.
16. suction catheter described in any one of 2~15 according to claim 1, wherein
When the straight line for connecting the lower end of the outer surface of the upper end and the pipe of the outer surface of the pipe is set as reference line,
The end above vertical direction in the pump orifice is recessed relative to the reference line, is in the pump orifice
Vertical direction below the end protruded relative to the reference line.
17. suction catheter described in any one of 2~16 according to claim 1, wherein
In section when cutting off the pipe along the first direction,
First peri position end of the outer surface side of the end below the vertical direction in the inner cavity is located at than the end
The first amphi position end of inner surface side be closer to the position of proximal side, connect the straight line phase at the first peri position end with the first amphi position end
For the first direction with 2 ° or more and 60 ° ranges below inclinations, above the vertical direction in the inner cavity described in
The second peri position end that second amphi position end of the outer surface side of end is located at the inner surface side than the end is closer to far side
Position, connects second amphi position end and the straight line at the second peri position end is below with 2 ° or more and 60 ° relative to the first direction
Range inclination.
18. suction catheter described in any one of 2~17 according to claim 1, wherein
The end in section when cutting off the pipe along the first direction, below the vertical direction in the inner cavity
The first amphi position end that first peri position end of the outer surface side in portion is located at the inner surface side than the end is closer to the position of proximal side
It sets, the second amphi position end of the outer surface side of the end above the vertical direction in the inner cavity is located at than the end
Second peri position end of inner surface side is closer to the position of far side,
End phase between the inner surface of pipe below vertical direction in the pump orifice, described and the outer surface of the pipe
The straight line at connection first peri position end and first amphi position end is recessed or is protruded,
End phase between the inner surface of pipe above vertical direction in the pump orifice, described and the outer surface of the pipe
For connecting the straight line recess or protrusion of second amphi position end and second peri position end.
19. suction catheter described in any one of 2~16 according to claim 1, wherein
From below vertical direction in the case where the pump orifice, the curvature of the peri position side end of the pump orifice is less than institute
State the curvature of the amphi position side end of pump orifice.
20. suction catheter described in any one of 2~17 according to claim 1, wherein
From below vertical direction in the case where the pump orifice, the peri position side end of the pump orifice is with described first
Linearly extend in direction and the orthogonal width direction of the vertical direction both sides.
21. a kind of manufacturing method of suction catheter, wherein include:
First cut off operation, by one end of the pipe extended in one direction relative to orthogonal with the first direction that inner cavity is extended
The inclined mode in face cut off；
Process is deformed, the inner cavity deformation of the pipe cut off by first cut off operation is made；And
Second cut off operation will be formed by first cut off operation and by the deformed pipe of deformation process
Opening the proximal side including peri position end a part cutting.
Applications Claiming Priority (3)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP2016-154007 | 2016-08-04 | ||
| JP2016154007 | 2016-08-04 | ||
| PCT/JP2017/027906 WO2018025865A1 (en) | 2016-08-04 | 2017-08-01 | Suction catheter, and method for manufacturing suction catheter |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN109152911A true CN109152911A (en) | 2019-01-04 |
| CN109152911B CN109152911B (en) | 2021-04-27 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201780032062.2A Active CN109152911B (en) | 2016-08-04 | 2017-08-01 | Suction catheter and method for manufacturing suction catheter |
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| Country | Link |
|---|---|
| JP (1) | JP7061069B2 (en) |
| CN (1) | CN109152911B (en) |
| WO (1) | WO2018025865A1 (en) |
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| JP5643024B2 (en) * | 2010-08-06 | 2014-12-17 | テルモ株式会社 | Aspiration catheter and method of manufacturing the aspiration catheter |
| DE102011111534A1 (en) * | 2011-08-31 | 2013-02-28 | QUALIMED Innovative Medizinprodukte Gesellschaft mit beschränkter Haftung | aspiration |
| JP7009368B2 (en) * | 2016-08-04 | 2022-01-25 | 株式会社カネカ | Manufacturing method of suction catheter and suction catheter |
| WO2018025859A1 (en) * | 2016-08-04 | 2018-02-08 | 株式会社カネカ | Suction catheter, and method for manufacturing suction catheter |
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2017
- 2017-08-01 CN CN201780032062.2A patent/CN109152911B/en active Active
- 2017-08-01 JP JP2018531926A patent/JP7061069B2/en active Active
- 2017-08-01 WO PCT/JP2017/027906 patent/WO2018025865A1/en active Application Filing
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| US20050015073A1 (en) * | 2003-01-22 | 2005-01-20 | Yuichi Kataishi | Thrombus suction catheter with improved suction and crossing |
| JP2005245930A (en) * | 2004-03-08 | 2005-09-15 | Kawasumi Lab Inc | Balloon catheter |
| US20140107591A1 (en) * | 2004-07-02 | 2014-04-17 | C. R. Bard, Inc. | Tip Configurations for Multi-Lumen Catheter |
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Also Published As
| Publication number | Publication date |
|---|---|
| JPWO2018025865A1 (en) | 2019-06-06 |
| CN109152911B (en) | 2021-04-27 |
| WO2018025865A1 (en) | 2018-02-08 |
| JP7061069B2 (en) | 2022-04-27 |
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