CN108378896A - Dredging conduit for interventional treatment - Google Patents
Dredging conduit for interventional treatment Download PDFInfo
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- CN108378896A CN108378896A CN201810025999.3A CN201810025999A CN108378896A CN 108378896 A CN108378896 A CN 108378896A CN 201810025999 A CN201810025999 A CN 201810025999A CN 108378896 A CN108378896 A CN 108378896A
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- Prior art keywords
- protrusion
- outer tube
- inner sleeve
- catheter body
- bistrique
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- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61B—DIAGNOSIS; SURGERY; IDENTIFICATION
- A61B17/00—Surgical instruments, devices or methods, e.g. tourniquets
- A61B17/22—Implements for squeezing-off ulcers or the like on the inside of inner organs of the body; Implements for scraping-out cavities of body organs, e.g. bones; Calculus removers; Calculus smashing apparatus; Apparatus for removing obstructions in blood vessels, not otherwise provided for
-
- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61B—DIAGNOSIS; SURGERY; IDENTIFICATION
- A61B17/00—Surgical instruments, devices or methods, e.g. tourniquets
- A61B17/22—Implements for squeezing-off ulcers or the like on the inside of inner organs of the body; Implements for scraping-out cavities of body organs, e.g. bones; Calculus removers; Calculus smashing apparatus; Apparatus for removing obstructions in blood vessels, not otherwise provided for
- A61B2017/22038—Implements for squeezing-off ulcers or the like on the inside of inner organs of the body; Implements for scraping-out cavities of body organs, e.g. bones; Calculus removers; Calculus smashing apparatus; Apparatus for removing obstructions in blood vessels, not otherwise provided for with a guide wire
-
- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61B—DIAGNOSIS; SURGERY; IDENTIFICATION
- A61B17/00—Surgical instruments, devices or methods, e.g. tourniquets
- A61B17/22—Implements for squeezing-off ulcers or the like on the inside of inner organs of the body; Implements for scraping-out cavities of body organs, e.g. bones; Calculus removers; Calculus smashing apparatus; Apparatus for removing obstructions in blood vessels, not otherwise provided for
- A61B2017/22094—Implements for squeezing-off ulcers or the like on the inside of inner organs of the body; Implements for scraping-out cavities of body organs, e.g. bones; Calculus removers; Calculus smashing apparatus; Apparatus for removing obstructions in blood vessels, not otherwise provided for for crossing total occlusions, i.e. piercing
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- Health & Medical Sciences (AREA)
- Surgery (AREA)
- Life Sciences & Earth Sciences (AREA)
- Heart & Thoracic Surgery (AREA)
- Nuclear Medicine, Radiotherapy & Molecular Imaging (AREA)
- Vascular Medicine (AREA)
- Engineering & Computer Science (AREA)
- Biomedical Technology (AREA)
- Orthopedic Medicine & Surgery (AREA)
- Medical Informatics (AREA)
- Molecular Biology (AREA)
- Animal Behavior & Ethology (AREA)
- General Health & Medical Sciences (AREA)
- Public Health (AREA)
- Veterinary Medicine (AREA)
- Media Introduction/Drainage Providing Device (AREA)
Abstract
The invention discloses a kind of dredging conduits for interventional treatment.The dredging conduit includes catheter body, torsion device and bistrique, the bistrique is set in one end of the catheter body, the torsion device is set on the peripheral surface of the catheter body, the bistrique has rough surface, the torsion device is connect with the catheter body, the torsion device is configured to input twisting resistance, so that the bistrique rotates, to gall the inner wall of blood vessel.The dredging conduit is simple in structure, easy to operate, can gall the inner wall of blood vessel rapidly, to form the entrance in channel.
Description
Technical field
The present invention relates to interventional treatment equipment technical fields, are led more particularly, to a kind of dredging for interventional treatment
Pipe.
Background technology
In the therapeutic process of the Chronic total occlusion (CTO) of periphery arteries, coronary artery etc., usually
Using the method for interventional treatment.For example, seal wire reaches occlusion section via the arteries of patient.The point of seal wire directly pierces through
Section is occluded, to achieve the purpose that establish channel.
In some cases, the blocking for occluding section is serious, can not be through.At this time, it may be necessary to via the blood vessel of the occlusion section
Inner and outer wall between region re-establish channel.
Accordingly, it is desirable to provide a kind of dredging conduit for interventional treatment, via lumen of vessels and to pierce through occlusion section proximal end
Blood vessel inner wall, in order to establish channel.
Invention content
It is an object of the present invention to provide a kind of new solutions of the dredging conduit for interventional treatment.
According to the first aspect of the invention, a kind of dredging conduit for interventional treatment is provided.The dredging conduit includes
Catheter body, torsion device and bistrique, the bistrique are set in one end of the catheter body, and the torsion device is set in institute
It states on the peripheral surface of catheter body, the bistrique has rough surface, and the torsion device is connect with the catheter body, described
Torsion device is configured to input twisting resistance, so that the bistrique rotates, to gall the inner wall of blood vessel.
Optionally, the torsion device includes outer tube, inner sleeve, the first elastic element and the first runner element；
The inside of the inner sleeve has pipeline, and the pipeline is for accommodating the catheter body and to the catheter body
It is formed and is fixed；
There is the inner sleeve insertion section, the insertion site to connect in the outer tube and with outer tube rotation
It connects, first elastic element and the first runner element are located in the outer tube；One of the first runner element
End face has the first protrusion, and the inside of the outer tube has clamping portion, any one in the insertion section and the clamping portion
It is a that there is the second protrusion, and another connect with another end face of the first runner element；First elastic element
Pre- elastic force is formed to the first runner element, so that first protrusion and second protrusion are mutually stuck, is turned round with transmitting
Turn power；
The outer tube and the inner sleeve when the twisting resistance between the outer tube and the inner sleeve is more than setting value
Slipping phenomenon occurs between pipe.
Optionally, first protrusion and second protrusion are arc convex, or
It is described first protrusion and second protrusion be wedge-shaped protrusion, the wedge-shaped protrusion include inclined-plane and with it is described tiltedly
The vertical plane of face connection, the inclined-plane of two wedge-shaped protrusions fit, and are stuck with being formed.
Optionally, further include the second runner element, the second runner element is located in the outer tube, described first
It is provided with third protrusion in the commissure of runner element and the second runner element, on one of them, is arranged on another
There is the 4th protrusion, the third protrusion and the 4th protrusion are mutually stuck, to transmit twisting resistance；
First protrusion, second protrusion, the third protrusion and the 4th protrusion are wedge-shaped protrusion, described
Wedge-shaped protrusion includes inclined-plane and the vertical plane that is connect with the inclined-plane, the inclined-plane on the inclined-plane of first protrusion and second protrusion
It fits, the inclined-plane of the inclined-plane of the third protrusion and the 4th protrusion fits；
It is more than when rotating the twisting resistance between the outer tube and the outer tube and the inner sleeve to a direction
When setting value, slipping phenomenon occurs between first protrusion and second protrusion；
It is super when rotating the twisting resistance between the outer tube and the outer tube and the inner sleeve in the opposite direction
When crossing setting value, slipping phenomenon occurs between the third protrusion and the 4th protrusion.
Optionally, the torsion device includes outer tube, inner sleeve, the second elastic element, ball and third runner element；
The inside of the inner sleeve has pipeline, and the pipeline is for accommodating the catheter body and to the catheter body
It is formed and is fixed；
There is the inner sleeve insertion section, the insertion site to connect in the outer tube and with outer tube rotation
It connects, the third runner element is located in the outer tube, and an end face of the third runner element has a hole, in the hole
The ball for being provided with second elastic element and offseting with second elastic element, the ball are caught in the hole
And Local Convex is for the end face；The inside of the outer tube has clamping portion, in the insertion section and the clamping portion
Any one is with groove, and another connect with another end face of the third runner element；The second elasticity member
Part forms pre- elastic force to the ball, so that the part of the ball is caught in the groove, to transmit twisting resistance；
The outer tube and the inner sleeve when the twisting resistance between the outer tube and the inner sleeve is more than setting value
Slipping phenomenon occurs between pipe.
Optionally, it further includes jaw members and retaining element that the inside of the inner sleeve, which has accommodating chamber, the inner sleeve,
There is pipeline, the jaw members to include main part and be arranged in the more of one end of the main part for the inside of the jaw members
A claw, multiple claws are arranged around the pipeline, and the jaw members are arranged in the accommodating chamber, in the appearance
Intracavitary of receiving is provided with stopper section, and the retaining element is fixedly connected with the inner sleeve, one end of the retaining element with it is described
Main part offsets, so that the stopper section offsets with multiple claws, to make multiple claws mutually draw close, with fixation
The catheter body.
Optionally, the outer diameter of the bistrique is by being distally proximally gradually reduced.
Optionally, the outer diameter of one end for being connect with the bistrique of the catheter body is less than the catheter body
The outer diameter at the position being connect with the end, to form depressed area.
Optionally, the catheter body includes inner tube and macromolecule membranous layer, and said inner tube is formed by metal wire knitted, described
Macromolecule membranous layer is arranged in the outside of said inner tube.
Optionally, the material for making the bistrique includes metal material, high molecular material or ceramic material.
According to one embodiment of the disclosure, when in use, first, operator stretches the one end of dredging conduit with bistrique
Enter in arteries, and bistrique is made to march to the occlusion section of blood vessel；
Then, bistrique is rotated, and bistrique continuation is made to advance inwards；
If the blocking for occluding section is lighter, during rotating bistrique, bistrique can pass through occlusion section, to reach dredging
Purpose；
If the blockage ratio for occluding section is more serious, bistrique can not pass through occlusion section.At this point, when rotating bistrique, bistrique
Relative displacement can occur with tamper, final bistrique is limited on the inner wall of the blood vessel of occlusion section proximal end.Bistrique is rotated further,
Until the inner wall of blood vessel is worn.The cut is the entrance in the channel re-established.The channel re-established is located at blood vessel
Between inner and outer wall.
The dredging conduit is simple in structure, easy to operate, can gall the inner wall of blood vessel rapidly, to form the entrance in channel.
In addition, common seal wire can pass through the inner cavity of dredging conduit, to reach the distal end of occlusion section, in order to which seal wire guides
The entrance of device.
By referring to the drawings to the detailed description of exemplary embodiment of the present invention, other feature of the invention and its
Advantage will become apparent.
Description of the drawings
It is combined in the description and the attached drawing of a part for constitution instruction shows the embodiment of the present invention, and even
With its explanation together principle for explaining the present invention.
Fig. 1 is the sectional view of dredging conduit according to an embodiment of the invention.
Fig. 2 is the exploded view of torsion device according to an embodiment of the invention.
Fig. 3 is the sectional view of torsion device according to an embodiment of the invention.
Fig. 4 is the structural schematic diagram in cap portion according to an embodiment of the invention.
Fig. 5 is the partial enlarged view of the first runner element and cap portion according to an embodiment of the invention.
Fig. 6 is the partial enlarged view of the first runner element according to an embodiment of the invention.
Fig. 7 is the vertical view of the first runner element according to an embodiment of the invention.
Fig. 8 is the partial enlarged view of third runner element and cap portion according to an embodiment of the invention.
Fig. 9 is schematic diagram when dredging conduit according to an embodiment of the invention uses.
Figure 10 is the exploded view of another dredging conduit according to an embodiment of the invention.
Figure 11 is the structural schematic diagram of runner element according to an embodiment of the invention.
Reference sign：
18：The inner wall of blood vessel；19：Torsion device；20：Dredging conduit；21：Stopper section；22：First spring；23a：First
Runner element；23b：Second runner element；23c：Third runner element；23d：Inner circle keyway；24：Cap portion；25：Main part；26：
Outer tube；26a：Inside flange；27：Inner sleeve；27a：Outer round key；27b：Outside flange；28：Retaining element；29：Card
Pawl；30：Step structure；31：First protrusion；32：Second protrusion；33：Notch；34：Second spring；35：Ball；36：Groove；
37：Inclined-plane；38：Vertical plane；39：Catheter body；40：Bistrique；41：Depressed area；42：Pipeline；43：Female Luer；45：Commonly lead
Silk.
Specific implementation mode
Carry out the various exemplary embodiments of detailed description of the present invention now with reference to attached drawing.It should be noted that：Unless in addition having
Body illustrates that the unlimited system of component and the positioned opposite of step, numerical expression and the numerical value otherwise illustrated in these embodiments is originally
The range of invention.
It is illustrative to the description only actually of at least one exemplary embodiment below, is never used as to the present invention
And its application or any restrictions that use.
Technology, method and apparatus known to person of ordinary skill in the relevant may be not discussed in detail, but suitable
In the case of, the technology, method and apparatus should be considered as part of specification.
In shown here and discussion all examples, any occurrence should be construed as merely illustrative, without
It is as limitation.Therefore, other examples of exemplary embodiment can have different values.
It should be noted that：Similar label and letter indicate similar terms in following attached drawing, therefore, once a certain Xiang Yi
It is defined, then it need not be further discussed in subsequent attached drawing in a attached drawing.
Fig. 1 is the sectional view of dredging conduit according to an embodiment of the invention.
As shown in Figure 1, the dredging conduit 20 for being used for interventional treatment includes catheter body 39, torsion device 19 and bistrique
40.Bistrique 40 is set in one end of catheter body 39.Torsion device 19 is set on the peripheral surface of catheter body 39.Bistrique 40 has
There is rough surface.Rough surface is the table of the matte surface with rough structure or the groove structure with setting
Face.The operator of dredging conduit 20 can gall the inner wall 18 of blood vessel by rotating bistrique 40.
Torsion device 19 is connect with catheter body 39.Torsion device 19 is configured to input twisting resistance, so that bistrique
40 rotations.When in use, operator rotates torsion device 19 with hand.Twisting resistance is transmitted to bistrique 40 via catheter body 39, with
Bistrique 40 is set to rotate.
In embodiments of the present invention, when in use, first, operator stretches into the one end of dredging conduit 20 with bistrique 40
In arterial vascular lumen of vessels, and bistrique 40 is made to march to the occlusion section of blood vessel；
Then, bistrique 40 is rotated, and the continuation of bistrique 40 is made to advance inwards；
If the blocking for occluding section is lighter, during rotating bistrique 40, bistrique 40 can pass through occlusion section, to reach
The purpose of dredging；
If the blockage ratio for occluding section is more serious, bistrique 40 can not pass through occlusion section.At this point, when rotating bistrique 40,
Relative displacement can occur with tamper for bistrique 40, and final bistrique 40 is limited on the inner wall 18 of the blood vessel of occlusion section proximal end.After
Continuous rotation bistrique 40, until the inner wall 18 of blood vessel is worn.The cut is the entrance in the channel re-established.It re-establishes
Channel is located between the inner wall 18 and outer wall of blood vessel.
The dredging conduit 20 is simple in structure, easy to operate, can gall the inner wall 18 of blood vessel rapidly, to form entering for channel
Mouthful.
In addition, common seal wire 45 can pass through the inner cavity of dredging conduit 20, to reach the distal end of occlusion section.Common seal wire is used
In the entrance of guiding seal wire guide device.
Wherein, one end of operator of the distal end i.e. far from dredging conduit 20；Proximal end is the operator close to dredging conduit 20
One end.
In other examples, common seal wire can also be stretched into lumen of vessels first, then along common seal wire by dredging conduit
It stretches into.It is taken out after the inner wall of blood vessel is worn, then by common seal wire.Then, seal wire is drawn along the inner cavity of dredging conduit
Lead the distal end that device extend into occlusion section.
Those skilled in the art can select the operation order of all parts according to actual needs.
In one example, as shown in Figs. 1-2, torsion device 19 includes outer tube 26, inner sleeve 27, the first elastic element
With the first runner element 23a.Operator rotates bistrique 40 by outer tube 26.
The inside of inner sleeve 27 has pipeline.Pipeline forms fixation for receiving conduit ontology 39 and to catheter body 39.
Catheter body 39 in pipeline from passing through and being fixed in inner sleeve 27, so that catheter body 39 and inner sleeve 27 rotate synchronously.
Inner sleeve 27 has insertion section.Insertion site is rotatablely connected in outer tube 26 and with outer tube 26.Rotation connection
I.e. insertion section can be rotated relative to outer tube 26, and be connect with outer tube 26.For example, as shown in figure 3, insertion section has outward
Flange 27b.One end of outer tube 26 has inside flange 26a.Two flanges form backstop, so that outer tube 26 and inner sleeve
The insertion section of pipe 27 connects, so that outer tube 26 and inner sleeve 27 can relatively rotate.
First elastic element and the first runner element 23a are located in outer tube 26.First runner element 23a is located at inner sleeve
Between 27 and outer tube 26.First runner element 23a is used to transmit twisting resistance, and by mutual with inner sleeve or outer tube
Effect, to prevent twisting resistance excessive.
An end face of first runner element 23a has the first protrusion 31.The inside of outer tube 26 has clamping portion.It is inserted into
Any one in portion and clamping portion has the second protrusion 32, and another end face of another and the first runner element 23a
Connection.First elastic element pair the first runner element 23a forms pre- elastic force, so that the first protrusion 31 and the second protrusion 32 mutually card
It, to transmit twisting resistance.It refers to that the first protrusion 31 and the second protrusion 32 are circumferentially forming backstop mutually to stick, so that outer tube 26
It can be rotated synchronously with inner sleeve 27.For example, the first protrusion 31 and the second protrusion 32 intersect or the first protrusion 31 and second
Frictional force is formed between protrusion 32, to transmit twisting resistance.
When the second protrusion 32 is located at insertion section, the first runner element 23a and the circumferentially fixed connection in clamping portion, axial energy phase
To sliding, for example, the two is plugged in together, the first elastic element is between the first runner element 23a and clamping portion；When second
When protrusion 32 is located at clamping portion, the first runner element 23a and the circumferentially fixed connection in insertion section opposite can axially be slided, for example, such as
Shown in Fig. 2 and 10, insertion section is provided with outer round key 27a, for example, spline.As shown in figure 11, in the first runner element 23a
Inside have slot and around slot setting inner circle keyway 23d.Insertion section is inserted into slot, outer round key 27a and interior round key
Slot 23d is connected together, so that the first runner element 23a can be rotated synchronously with inner sleeve 27, and the first runner element 23a energy
It slides axially.
The two is plugged in together, and the first elastic element is between the first runner element 23a and insertion section.
For example, as shown in Figure 3-4, outer tube 26 includes cap portion 24.Cap portion 24 is used as clamping portion.The end face in cap portion 24 has
Second protrusion 32.First elastic element is the first spring 22, shrapnel or elastic rubber.Preferably, the first elastic element is
First spring 22.First spring 22 is set in insertion section.Insertion section is provided with step structure 30.Step structure 30 and the first bullet
One end of spring 22 offsets, and the other end of the first spring 22 offsets with the first runner element 23a, so that first raised 31 and second is convex
32 are played mutually to stick.
In this example embodiment, when the twisting resistance between outer tube 26 and inner sleeve 27 is more than setting value, outer tube 26 and interior
Slipping phenomenon occurs between casing 27.Slipping phenomenon refers to, when outer tube 26 rotates, inner sleeve 27 is not synchronized with outer tube 26
Rotation, outer tube 26 is rotated relative to inner sleeve 27, to prevent the twisting resistance of catheter body 39 excessive.Twisting resistance is excessive to be shown
The resistance that bistrique or dredging conduit are subject to becomes larger.The conference of crossing of the raising of twisting resistance causes catheter body 39 to be distorted change
Shape can cause to damage in this way to blood vessel.Slipping phenomenon can be effectively prevented catheter body 39 and be distorted deformation.
When the twisting resistance inputted by outer tube 26 is within the scope of setting, the first protrusion 31 and the second protrusion 32 are kept
The state mutually stuck, this makes outer tube 26 and inner sleeve 27 rotate synchronously.Inner sleeve 27 drives catheter body 39 to rotate, from
And the bistrique 40 positioned at 39 distal end of catheter body is made to rotate.
In one example, the first protrusion 31 and the second protrusion 32 are arc convex.In this case, outer tube 26
Edge is counterclockwise and rotates clockwise, and when twisting resistance is more than setting value, slipping phenomenon can occur for both direction.Either
As illustrated in figs. 5-7, the first protrusion 31 and the second protrusion 32 are wedge-shaped protrusion.Wedge-shaped protrusion include inclined-plane 37 and with
The vertical plane 38 that inclined-plane 37 connects.Vertical plane 38 is parallel with the axial direction of inner sleeve 27 and outer tube 26.Due to the effect of elastic element, therefore
The inclined-plane 37 of two wedge-shaped protrusions fits, and is stuck with being formed.In this case, when twisting resistance is more than setting value, housing
When rotating slipping phenomenon can occur for a direction of the pipe 26 in clockwise or counter-clockwise, and when being rotated along another direction not
Slipping phenomenon can occur.
Those skilled in the art can adjust the big of the twisting resistance that can be transmitted according to the size of the stiffness factor of elastic element
It is small.
In other examples, by increasing gasket come the compression degree of adjustment spring, to adjust the twisting resistance that can be transmitted
Size.For example, gasket be sandwiched in the first spring 22 between the first runner element 23a and/or the first spring 22 and inner sleeve
Between pipe 27.
In one example, as illustrated in figures 4 and 7, the first protrusion 31 and the second protrusion 32 are multiple, and the two is one by one
It is corresponding.This enables the transmission of twisting resistance more balanced.
In one example, as shown in Figure 10, runner element is two, i.e. the first runner element 23a and the second runner member
Part 23b.First runner element 23a and the second runner element 23b are located in the outer tube 26.On the first runner element 23a
It is provided with the first protrusion 31.First protrusion 31 is mutually stuck with the second protrusion 32 positioned at insertion section or clamping portion.
It is convex it to be provided with third in the commissure of the first runner element 23a and the second runner element 23b, on one of them
It rises, the 4th protrusion is provided on another.Third protrusion and the 4th protrusion are mutually stuck, to transmit twisting resistance.
First protrusion 31, the second protrusion 32, third protrusion and the 4th protrusion are wedge-shaped protrusion.Wedge-shaped protrusion includes inclined-plane
37 and the vertical plane 38 that is connect with inclined-plane 37.Vertical plane 38 is parallel with the axial direction of inner sleeve 27 and outer tube 26.Due to the first elasticity member
The effect of part (for example, first spring 22), therefore the inclined-plane 37 of the first protrusion 31 and the inclined-plane 37 of the second protrusion 32 fit.Third
The inclined-plane 37 of protrusion and the inclined-plane 37 of the 4th protrusion fit.
When to direction (for example, clockwise) rotating jacket pipe 26 and the torsion between outer tube 26 and inner sleeve 27
When power is more than setting value, slipping phenomenon occurs between the first protrusion 31 and the second protrusion 32；
When rotating jacket pipe 26 and the torsion between outer tube 26 and inner sleeve 27 (for example, counterclockwise) in the opposite direction
When turning power more than setting value, slipping phenomenon occurs between third protrusion and the 4th protrusion.
By the way that two runner elements (23a, 23b) are arranged, torsion device 19 can be realized towards rotating clockwise and anticlockwise
Slipping phenomenon occurs for Shi Junneng.
In one example, as shown in figure 8, torsion device 19 include outer tube 26, inner sleeve 27, the second elastic element,
Ball 35 and third runner element 23c.
The inside of inner sleeve 27 has pipeline.Pipeline forms fixation for receiving conduit ontology 39 and to catheter body 39.
Catheter body 39 in pipeline from passing through and being fixed in inner sleeve 27, so that catheter body 39 and inner sleeve 27 rotate synchronously.
Inner sleeve 27 has insertion section.Insertion site is rotatablely connected in outer tube 26 and with outer tube 26.Rotation connection
I.e. insertion section can be rotated relative to outer tube 26, and be connect with outer tube 26.For example, insertion section has outside flange 27b.
One end of outer tube 26 has inside flange 26a.Two flanges form backstop, so that the insertion of outer tube 26 and inner sleeve 27
Portion connects.
Third runner element 23c is located in outer tube 26.Third runner element 23c be located at inner sleeve 27 and outer tube 26 it
Between.An end face of third runner element 23c has hole.It is provided with the second elastic element in hole and offsets with the second elastic element
Ball 35.Ball 35 is caught in hole and Local Convex is for end face.The inside of outer tube 26 has clamping portion.Insertion section and card
Any one in socket part is with groove 36, and another connect with another end face of the third runner element 23c.The
Two elastic elements form pre- elastic force to ball 35, so that the part of ball 35 is caught in groove 36, to transmit twisting resistance.
When groove 36 is located at insertion section, third runner element 23c and the circumferentially fixed connection in clamping portion can axially be slided relatively
Dynamic, for example, the two is plugged in together, the second elastic element is located between third runner element 23c and clamping portion；When groove 36
When clamping portion, third runner element 23c and the circumferentially fixed connection in insertion section opposite can axially be slided, for example, the two is plugged on
Together, the second elastic element is located between third runner element 23c and insertion section.
For example, outer tube 26 includes cap portion 24.Cap portion 24 is used as clamping portion.The end face in cap portion 24 has groove 36.Second
Elastic element is second spring 34, shrapnel or elastic rubber.Preferably, the second elastic element is second spring 34.Ball
35 and second spring 34 be located in the hole of third runner element 23c.Second spring 34 forms pre- elastic force to ball 35, so that ball
35 are stuck in groove 36.
It is sent out between outer tube 26 and inner sleeve 27 when the twisting resistance between outer tube 26 and inner sleeve 27 is more than setting value
Raw slipping phenomenon.
In this example embodiment, outer tube 26 along counterclockwise and rotate clockwise, when twisting resistance be more than setting value when, both direction
Slipping phenomenon can occur.
In one example, as Figure 2-3, the inside of inner sleeve 27 has accommodating chamber.Inner sleeve 27 further includes claw
Component and retaining element 28.The inside of jaw members has pipeline 42.Catheter body 39 passes through pipeline 42.Jaw members include master
Body portion 25 and multiple claws 29 in one end of main part 25 are set.Multiple claws 29 are arranged around pipeline 42.Jaw members quilt
It is arranged in accommodating chamber.Stopper section 21 is provided in accommodating chamber.Retaining element 28 is fixedly connected with inner sleeve 27.For example, solid
Determining element 28 has external screw thread.Inner sleeve 27 has internal thread.Retaining element 28 is threadedly coupled with inner sleeve 27.Retaining element 28
One end offset with main part 25 so that stopper section 21 offsets with multiple claws 29, to make multiple claws 29 mutually draw close, with
Fixed catheter ontology 39.
In this example embodiment, as shown in figure 3, retaining element 28, main part 25, claw 29 and stopper section 21 are arranged successively in an axial direction
Row.Jaw members are in tubular construction.Notch 33 is formed between adjacent claw 29.The outer end face of claw 29 has oblique cutting part.
Stopper section 21 has chamfered structure corresponding with oblique cutting part.When jaw members are applied to close to the direction of stopper section 21 in an axial direction
When adding active force, chamfered structure can oblique pushing claw 29.Due to the presence of notch 33, multiple claws 29 can mutually be drawn close.It is more
A claw 29 can compress catheter body 39 jointly, to form fixation.
In this example embodiment, the setting of jaw members and retaining element 28 is so that the fixation of catheter body 39 becomes easy.
In addition, retaining element 28 is removably connect with inner sleeve 27 so that the adjusting of the length of catheter body 39 becomes
It is easy.
In one example, the outer diameter of bistrique 40 is by being distally proximally gradually reduced.In this way, bistrique 40 encounter it is intravascular
Barrier or reach occlusion section, need turning when, since the outer diameter of proximal end is small, thus be avoided that and barrier or occlusion section
Interference is formed, to make turning be easier, reduces the resistance of the traveling of bistrique 40.
In addition, the outer diameter of the distal end of bistrique 40 is big.This makes bistrique 40 be easier to contact with the inner wall 18 of blood vessel, to make
The inner wall 18 for galling blood vessel becomes easy.
Optionally, the material of bistrique 40 is metal, alloy, high molecular material, ceramic material or glass material.Above-mentioned material
The wearability of material is good.For example, SS304 stainless steels, SS306 stainless steels, Nitinol, titanium alloy, polytetrafluoroethylene (PTFE) (PTFE),
Acrylonitrile-butadiene-styrene copolymer (ABS) etc..
Bistrique 40 is fixedly connected by modes such as riveting, bonding, welding with catheter body 39.Optionally, bonding is viscous
Knot agent is medical instant drying adhesive, for example, the glue such as 4011,4061,4161,4601.
In one example, as illustrated in figs 1 and 9, the outer diameter of one end for being connect with bistrique 40 of catheter body 39 is small
Outer diameter in the position of catheter body 39 being connect with the end, to form depressed area 41.This mode improves dredging conduit 20
The compliance of distal end.As shown in figure 9, when bistrique 40 is turned, depressed area 41 can be to shapes such as the inner wall 18 of blood vessel, barriers
At effective evacuation, to keep the traveling of dredging conduit 20 more smooth.
In one example, catheter body 39 includes inner tube and macromolecule membranous layer.Inner tube is formed by metal wire knitted.High score
Sub- film layer is arranged in the outside of inner tube.For example, inner tube is formed by bull metal wire knitted.Optionally, the head number of wire is 6-
12.Above-mentioned head number makes the twisting resistance transmission efficiency highest of catheter body 39.Single layer braiding or multilayer may be used in inner tube
The mode of braiding, spiral way can be that left-handed, dextrorotation or left and right rotation are superimposed.
Macromolecule membranous layer is attached to the outer surface of inner tube.The smooth surface of macromolecule membranous layer can reduce catheter body 39
The frictional force advanced in the blood vessel.
In addition, macromolecule membranous layer can make catheter body 39 form effective sealing.In this way, operator can pass through conduit
The liquid such as contrast agent are injected into target blood in the inner cavity of ontology 39.
Optionally, the material of macromolecule membranous layer is polyurethane (PU), thermoplastic polyurethane elastomer (TPU), block polyether
At least one of amide elastomer (PEBAX), nylon.The intensity of above-mentioned material is high, elasticity is good and good tolerance.
Those skilled in the art can be set according to actual needs the number of plies, thickness, hardness of macromolecule membranous layer etc..
As shown in Fig. 1,9 and 10, the entrance of contrast agent and common seal wire 45 is injected for convenience, in catheter body 39
Proximal end is additionally provided with female Luer 43.
In embodiments of the present invention, operator is after operation dredging conduit 20 galls the inner wall 18 of blood vessel, the cut conduct
The entrance in channel, then by common seal wire 45 across the inner cavity of the dredging conduit 20, between the inner wall 18 and outer wall of blood vessel
Region.
Then, dredging conduit 20 is taken out along common seal wire 45；
Next, seal wire guide device is stretched into the region between the inner wall 18 of blood vessel and outer wall along common seal wire 45,
And the distal end of occlusion section is reached, so that the detent mechanism of seal wire guide device is trailed, to be positioned to the outlet in channel；
Next, common seal wire 45 is taken out；
Finally, the medical guiding wire with bending part is extend into along the inner cavity of seal wire guide device near detent mechanism,
And bending part is made to pass through the through-hole of detent mechanism, then the inner wall 18 of blood vessel is pierced through, to reach in lumen of vessels.Channel is used as at puncture
Outlet.The foundation in channel is completed in this way.After Path Setup, operator can select the modes such as bridging to carry out
Operation.
Although some specific embodiments of the present invention are described in detail by example, the skill of this field
Art personnel it should be understood that example above merely to illustrating, the range being not intended to be limiting of the invention.The skill of this field
Art personnel are it should be understood that can without departing from the scope and spirit of the present invention modify to above example.This hair
Bright range is defined by the following claims.
Claims (10)
1. a kind of dredging conduit for interventional treatment, which is characterized in that described including catheter body, torsion device and bistrique
Bistrique is set in one end of the catheter body, and the torsion device is set on the peripheral surface of the catheter body, the mill
There is head rough surface, the torsion device to be connect with the catheter body, and the torsion device is configured to input and turns round
Turn power, so that the bistrique rotates, to gall the inner wall of blood vessel.
2. the dredging conduit according to claim 1 for interventional treatment, which is characterized in that the torsion device includes outer
Casing, inner sleeve, the first elastic element and the first runner element；
The inside of the inner sleeve has pipeline, and the pipeline is for accommodating the catheter body and being formed to the catheter body
It is fixed；
There is the inner sleeve insertion section, the insertion site to be rotatablely connected in the outer tube and with the outer tube, institute
It states the first elastic element and the first runner element is located in the outer tube；One end face of the first runner element has
There are the first protrusion, the inside of the outer tube that there is clamping portion, any one in the insertion section and the clamping portion to have
Second protrusion, and another connect with another end face of the first runner element；First elastic element is to described
First runner element forms pre- elastic force, so that first protrusion and second protrusion are mutually stuck, to transmit twisting resistance；
When the twisting resistance between the outer tube and the inner sleeve be more than setting value when the outer tube and the inner sleeve it
Between slipping phenomenon occurs.
3. the dredging conduit according to claim 2 for interventional treatment, which is characterized in that described first is raised and described
Second protrusion is arc convex, or
First protrusion and second protrusion are wedge-shaped protrusion, and the wedge-shaped protrusion includes inclined-plane and connects with the inclined-plane
The inclined-plane of the vertical plane connect, two wedge-shaped protrusions fits, and is stuck with being formed.
4. the dredging conduit according to claim 2 for interventional treatment, which is characterized in that further include the second runner member
Part, the second runner element are located in the outer tube, in connecing for the first runner element and the second runner element
It in face, is provided with third protrusion on one of them, be provided with the 4th protrusion on another, the third protrusion and described the
Four protrusions are mutually stuck, to transmit twisting resistance；
First protrusion, second protrusion, the third protrusion and the 4th protrusion are wedge-shaped protrusion, the wedge shape
Protrusion includes inclined-plane and the vertical plane being connect with the inclined-plane, and the inclined-plane of first protrusion and the second raised inclined-plane are affixed
It closes, the inclined-plane of the inclined-plane of the third protrusion and the 4th protrusion fits；
It is more than setting when rotating the twisting resistance between the outer tube and the outer tube and the inner sleeve to a direction
When value, slipping phenomenon occurs between first protrusion and second protrusion；
It is more than to set when rotating the twisting resistance between the outer tube and the outer tube and the inner sleeve in the opposite direction
When definite value, slipping phenomenon occurs between the third protrusion and the 4th protrusion.
5. the dredging conduit according to claim 1 for interventional treatment, which is characterized in that the torsion device includes outer
Casing, inner sleeve, the second elastic element, ball and third runner element；
The inside of the inner sleeve has pipeline, and the pipeline is for accommodating the catheter body and being formed to the catheter body
It is fixed；
There is the inner sleeve insertion section, the insertion site to be rotatablely connected in the outer tube and with the outer tube, institute
It states third runner element to be located in the outer tube, an end face of the third runner element has hole, in the hole is arranged
The ball for having second elastic element and offseting with second elastic element, the ball be caught in the hole and
Local Convex is for the end face；The inside of the outer tube has clamping portion, arbitrary in the insertion section and the clamping portion
One has groove, and another connect with another end face of the third runner element；Second elastic element pair
The ball forms pre- elastic force, so that the part of the ball is caught in the groove, to transmit twisting resistance；
When the twisting resistance between the outer tube and the inner sleeve be more than setting value when the outer tube and the inner sleeve it
Between slipping phenomenon occurs.
6. the dredging conduit for interventional treatment according to any one in claim 2-5, which is characterized in that described
The inside of inner sleeve has accommodating chamber, and the inner sleeve further includes jaw members and retaining element, the inside of the jaw members
With pipeline, the jaw members include main part and multiple claws in one end of the main part, multiple cards are arranged
Pawl is arranged around the pipeline, and the jaw members are arranged in the accommodating chamber, and backstop is provided in the accommodating chamber
Portion, the retaining element are fixedly connected with the inner sleeve, and one end of the retaining element offsets with the main part, so that institute
It states stopper section to offset with multiple claws, to make multiple claws mutually draw close, with the fixation catheter body.
7. the dredging conduit according to claim 1 for interventional treatment, which is characterized in that the outer diameter of the bistrique is by remote
End is proximally gradually reduced.
8. the dredging conduit according to claim 7 for interventional treatment, which is characterized in that the catheter body is used for
The outer diameter of the one end being connect with the bistrique is less than the outer diameter at the position of the catheter body being connect with the end, to form recess
Area.
9. the dredging conduit according to claim 1 for interventional treatment, which is characterized in that the catheter body includes interior
Pipe and macromolecule membranous layer, said inner tube are formed by metal wire knitted, and the macromolecule membranous layer is arranged in the outside of said inner tube.
10. the dredging conduit according to claim 1 for interventional treatment, which is characterized in that for making the bistrique
Material include metal material, high molecular material or ceramic material.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810025999.3A CN108378896A (en) | 2018-01-11 | 2018-01-11 | Dredging conduit for interventional treatment |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810025999.3A CN108378896A (en) | 2018-01-11 | 2018-01-11 | Dredging conduit for interventional treatment |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN108378896A true CN108378896A (en) | 2018-08-10 |
Family
ID=63076095
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201810025999.3A Pending CN108378896A (en) | 2018-01-11 | 2018-01-11 | Dredging conduit for interventional treatment |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN108378896A (en) |
Citations (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP0898940A1 (en) * | 1993-03-12 | 1999-03-03 | Heart Rhythm Technologies, Inc. | Electrophysiological procedures using a catheter |
| US20080312672A1 (en) * | 2007-06-12 | 2008-12-18 | Possis Medical, Inc. | Forwardly directed fluid jet crossing catheter |
| US20080319386A1 (en) * | 2007-06-20 | 2008-12-25 | Possis Medical, Inc. | Forwardly directable fluid jet crossing catheter |
| CN102762159A (en) * | 2009-09-02 | 2012-10-31 | 瑞弗罗医疗公司 | Systems, methods and devices for ablation, crossing, and cutting of occlusions |
| US20120283759A1 (en) * | 2008-04-28 | 2012-11-08 | Bridgepoint Medical, Inc. | Methods and apparatus for crossing occlusions in blood vessels |
| CN103127605A (en) * | 2007-05-16 | 2013-06-05 | Icu医学有限公司 | Medical connector with closeable male lure |
| US20140074153A1 (en) * | 2009-10-14 | 2014-03-13 | Ntn Corporation | Insertion device, training device, and recording system |
| CN105025959A (en) * | 2013-03-13 | 2015-11-04 | 赛诺菲-安万特德国有限公司 | Add-on grip- and actuation-sleeve for a pen-type drug injection device |
| CN107148289A (en) * | 2014-09-15 | 2017-09-08 | 业聚医疗股份有限公司 | Blood vessel reentry catheter |
-
2018
- 2018-01-11 CN CN201810025999.3A patent/CN108378896A/en active Pending
Patent Citations (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP0898940A1 (en) * | 1993-03-12 | 1999-03-03 | Heart Rhythm Technologies, Inc. | Electrophysiological procedures using a catheter |
| CN103127605A (en) * | 2007-05-16 | 2013-06-05 | Icu医学有限公司 | Medical connector with closeable male lure |
| US20080312672A1 (en) * | 2007-06-12 | 2008-12-18 | Possis Medical, Inc. | Forwardly directed fluid jet crossing catheter |
| US20080319386A1 (en) * | 2007-06-20 | 2008-12-25 | Possis Medical, Inc. | Forwardly directable fluid jet crossing catheter |
| US20120283759A1 (en) * | 2008-04-28 | 2012-11-08 | Bridgepoint Medical, Inc. | Methods and apparatus for crossing occlusions in blood vessels |
| CN102762159A (en) * | 2009-09-02 | 2012-10-31 | 瑞弗罗医疗公司 | Systems, methods and devices for ablation, crossing, and cutting of occlusions |
| US20140074153A1 (en) * | 2009-10-14 | 2014-03-13 | Ntn Corporation | Insertion device, training device, and recording system |
| CN105025959A (en) * | 2013-03-13 | 2015-11-04 | 赛诺菲-安万特德国有限公司 | Add-on grip- and actuation-sleeve for a pen-type drug injection device |
| CN107148289A (en) * | 2014-09-15 | 2017-09-08 | 业聚医疗股份有限公司 | Blood vessel reentry catheter |
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Application publication date: 20180810 |