CN104958824B - A kind of guiding catheter - Google Patents
A kind of guiding catheter Download PDFInfo
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- CN104958824B CN104958824B CN201510461299.5A CN201510461299A CN104958824B CN 104958824 B CN104958824 B CN 104958824B CN 201510461299 A CN201510461299 A CN 201510461299A CN 104958824 B CN104958824 B CN 104958824B
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- guiding catheter
- handle
- curved segment
- bracing wire
- catheter
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Abstract
This application discloses a kind of guiding catheters, including head end, tail end and main part for connecting the head end and the tail end, the guiding catheter has catheter lumen, further include: it adjusts the first end of curved segment to be connected with the head end, the second end of curved segment and the end of the main part of guiding catheter towards the head end of guiding catheter is adjusted to be connected；The center cavity of curved segment is adjusted to be connected with catheter lumen；Adjust curved component, including handle, one end of bracing wire is through main part and adjusts curved segment and is connected with the first end of curved segment is adjusted, and the other end of bracing wire draws via the tail end of guiding catheter and is connected with handle, and handle can adjust bracing wire and be placed in main part and adjust the length in curved segment.Due to directly utilizing bracing wire to change the bending angle of tune curved segment, the applicability of guiding catheter can be improved so that the head end of guiding catheter protrudes into lesion locations so as to adjust the angle of head end of guiding catheter according to the physiological structure of patient.
Description
Technical field
The present invention relates to the field of medical instrument technology, more particularly to a kind of guiding catheter.
Background technique
With the development of intervention medical technology, intervention class diagnosis and treatment conduit especially guiding catheter has been widely used in people
In body interventional programs.In general, because the difference of human anatomic structure, doctor generally require by various not similar shapes
Shape, structure and size intervention diagnosis and therapy conduit establish patient's body diseased region and external channel.
However, in clinical use, even if developing the specific Human Physiology anatomical structure of various bases and designing remote
The guiding catheter of pre- moulding is held, can not also be adapted to completely with the physiological anatomic architecture of individuation.For this purpose, in the course of surgery, doctor
Conduit would generally be withdrawn from and select the pre- moulding guiding catheter of other shapes again by life, during replacing guiding catheter,
The impaired probability of the difficulty that doctor performs the operation and the expense that sufferer is undertaken and sufferer lumen organization is undoubtedly increased, even
Doctor and sufferer raying time can be extended.
Therefore, how to improve the applicability of intervention class diagnosis and treatment conduit is that those skilled in the art need the technology solved to ask
Topic.
Summary of the invention
In view of this, the purpose of the application is to provide a kind of guiding catheter, it can be according to personalized physiological anatomic architecture
The curved shape of guiding catheter is adjusted, so as to improve the applicability of guiding catheter.
This application provides a kind of guiding catheter, including head end, tail end and for connecting the head end and the tail end
Main part, the guiding catheter has catheter lumen, and the guiding catheter can be used in being inserted into coronary artery, and the guiding catheter also wraps
It includes: adjusting curved segment, the first end for adjusting curved segment is connected with the head end, the second end for adjusting curved segment and the guiding catheter
The end of main part towards the head end of the guiding catheter be connected；The center cavity for adjusting curved segment is connected with the catheter lumen
It is logical；Adjust curved component, including handle, one end of the bracing wire through the main part and it is described adjust curved segment and with the curved segment of adjusting
First end is connected, and the other end of the bracing wire draws via the tail end of the guiding catheter and is connected with the handle, institute
The length that the bracing wire is placed in the main part and the tune curved segment can be adjusted by stating handle.
Preferably, the main part and the tune curved segment include the internal layer for being surrounded on the center cavity setting, are surrounded on
The enhancement layer of the internal layer setting and the outer layer for being surrounded on the enhancement layer setting, the tune curved segment and the main part are also all provided with
It is equipped with bracing wire chamber, the bracing wire chamber is set between the enhancement layer and the internal layer, and the bracing wire chamber is towards the head end
End is provided with anchor ring, and the bracing wire is mutually fixedly connected through the bracing wire chamber and with the anchor ring.
Preferably, the tune curved segment and the main part include at least one described bracing wire chamber, each bracing wire chamber
It is provided with the anchor ring, each anchor ring has the corresponding bracing wire to be mutually fixedly connected therewith, the adjustment handle
The intracavitary length of the bracing wire is placed in for adjusting every bracing wire.
Preferably, the cross section of the catheter lumen and the cross section of the center cavity are circular cross section or the conduit
Chamber cross section and the cross section of the center cavity are non-circular cross sections.
Preferably, the main part is straight body portion or the main part is bending main part.
Preferably, the head end is flexible plastic head end or the head end includes plastics head end and one end and the soft modeling
Material head end is connected, the plastic flexible pipe section that the other end is connected with the first end for adjusting curved segment, and the plastic flexible pipe section includes
Develop indicating and enhancement layer.
Preferably, the anchor ring and the enhancement layer of the plastic flexible pipe section are integral type setting.
Preferably, the bending angle for adjusting curved segment is greater than 0 ° and is not more than 270 °.
Preferably, described that curved segment is adjusted to adjust curved segment or the hardness for adjusting curved segment along the first end for adjusting curved segment to be soft
It is incremented by step by step to the second end for adjusting curved segment.
Preferably, be provided with the bracing wire chamber between the enhancement layer and the internal layer, the handle include shell,
Spiral organ and the guide pad, screw rod and steel pipe for being all set in the enclosure interior, in which: the end of thread of the screw rod and institute
It states spiral organ to be attached by being threadedly engaged, the fixing end of the screw rod is mutually fixedly connected with the guide pad；The drawing
Line with the fixing end of the screw rod is mutually fixedly connected through the steel pipe and by the grooving of the steel pipe；The steel pipe
Front end be mutually fixedly connected with the anchor tip, the rear end of the steel pipe is mutually fixedly connected with the guide pad, the steel pipe
Through the screw rod；The guide pad is mutually fixedly connected with the shell.
Preferably, there are two the bracing wire chambers for setting between the enhancement layer and the internal layer, and the handle includes handle
Pullover, handle driver plate, two anchorage shoes, dampened disk, handle upper cover, bezel cover, damped ring and handle lower cover, in which: institute
It states handle driver plate to be set on the boss of the handle upper cover, and the handle driver plate can be revolved along the center of the boss
Turn；Annular groove is offered on the excircle of the handle driver plate, the damped ring is embedded in the annular groove, the handle driver plate tool
There are two the regulating parts for stirring the handle driver plate rotation；The dampened disk and the handle driver plate abut against and the resistance
Buddhist nun's disk and the boss of the handle upper cover fit, and fastener through the dampened disk, handle upper cover boss and with it is described
Bezel cover is mutually fixedly connected；Two anchorage shoes are all set in the handle driver plate, positioned at two bracing wire chambers
The bracing wire passes through the corresponding regulating part respectively and is connected with the corresponding anchorage shoe；It is described to lead
The tail end of guiding tube is connected with strain relief casing；It further include the pipe joint for being exposed to the handle end, the conduit
Connector and the strain relief casing are embedded in the card slot between the handle upper cover and the handle lower cover.
Preferably, the guiding catheter further includes bending adjuster, and the bending adjuster includes wrapping wire, core filaments and seal wire
Seat, the wrapping wire are set to the head end of the bending adjuster, the core filaments can through the guiding catheter catheter lumen and
The center cavity of the bending section.
Preferably, the wrapping wire is metal spring or plastic material wrapping wire；The core filaments are bending wire.
Preferably, the guiding catheter further includes expander, and the expander includes the connector of expansion pipe and expander, institute
State expansion pipe protrude into the guiding catheter catheter lumen and it is described adjust curved segment center cavity in and it is described expansion pipe head end can
Through the guiding catheter head end and be exposed to the guiding catheter head end outside.
Preferably, the main part of the guiding catheter is additionally provided at least one side opening, and the side opening is led with described
Lumen is connected.
A kind of guiding catheter provided herein includes head end, tail end and the main body for connecting head end and tail end
Portion, guiding catheter have catheter lumen, and guiding catheter is for being inserted into coronary artery, guiding catheter further include: adjusts curved segment, adjusts the first of curved segment
End is connected with head end, and the second end of curved segment and the end of main part towards head end is adjusted to be connected；It adjusts the center cavity of curved segment and leads
The catheter lumen of guiding tube is connected；Curved component is adjusted, bending adjustment includes bracing wire and handle, and main part and tune are run through in one end of bracing wire
Curved segment is simultaneously connected with the first end of curved segment is adjusted, and the other end of bracing wire draws via the tail end of guiding catheter and is connected with handle
It connects, handle can adjust bracing wire and be placed in main part and adjust the length in curved segment.So set, when being performed the operation, according to patient
Physiological structure can be placed in the length in guiding catheter by changing bracing wire, be lowered in the drive of bracing wire by operation handle
Curved segment can bend, and during adjusting curved segment to bend, will drive the head end movement of guiding catheter, so as to adjust
The angle of the head end of guiding catheter, so that the head end of guiding catheter protrudes into lesion locations such as coronary artery, so as to lesion position
The instruments such as transfer gantry, seal wire or sacculus are set, compared with prior art, due to directly utilizing bracing wire to change the bending angle of tune curved segment
Degree, so as to according to the physiological structure of patient adjust guiding catheter head end angle so that the head end of guiding catheter protrudes into
Lesion locations, can be improved the applicability of guiding catheter, and due to not needing replacement guiding catheter in the course of surgery, can be with
Operating difficulty is reduced, the time required for performing the operation is reduced, improves the safety of intervention operation.
Detailed description of the invention
In order to more clearly explain the embodiment of the invention or the technical proposal in the existing technology, to embodiment or will show below
There is attached drawing needed in technical description to be briefly described, it should be apparent that, the accompanying drawings in the following description is only this
Some embodiments of invention for those of ordinary skill in the art without creative efforts, can be with
It obtains other drawings based on these drawings.
Fig. 1 is the structural schematic diagram of the guiding catheter in embodiment one provided herein；
Fig. 2 is the structural schematic diagram of the guiding catheter in embodiment two provided herein；
Fig. 3 is the amplified schematic diagram of guiding catheter partial structurtes in specific embodiment provided herein；
Fig. 4 is the structural schematic diagram of bending adjuster in specific embodiment provided herein；
Fig. 5 is the structural schematic diagram of expander in specific embodiment provided herein；
Fig. 6 is the structural representation of the guiding catheter in specific embodiment provided herein with bending adjuster
Figure；
Fig. 7 is the structural schematic diagram of the guiding catheter in specific embodiment provided herein with expander；
Fig. 8 is the vertical section structure schematic diagram of guiding catheter in embodiment one provided herein；
Fig. 9 is the vertical section structure schematic diagram of guiding catheter in embodiment two provided herein；
Figure 10 is the cross-sectional structure schematic diagram of guiding catheter in embodiment one provided herein；
Figure 11 is the cross-sectional structure schematic diagram of guiding catheter in embodiment two provided herein；
Figure 12 is a kind of cross-sectional structure schematic diagram of guiding catheter in embodiment provided herein；
Figure 13 is the cross-sectional structure schematic diagram of another guiding catheter in embodiment provided herein；
Figure 14 is the integrally-built structural schematic diagram of handle in embodiment one provided herein；
Figure 15 is the structural schematic diagram of the partial structurtes of handle in embodiment one provided herein；
Figure 16 is the structural schematic diagram of the section of handle in embodiment one provided herein；
Figure 17 is the structural schematic diagram of handle in embodiment two provided herein；
Figure 18 is the structural schematic diagram of handle in embodiment two provided herein；
Wherein Fig. 1 is into Figure 18:
The head end 1 of guiding catheter, adjusts curved segment 3, main part 4, bracing wire 5, strain relief casing 6, handle 7, conduit at anchor ring 2
Connector 8, wrapping wire 10, core filaments 11, filament guiding seat 12, expansion pipe 13, the connector 14 of expander, Y shape valve 15, outer layer 16, adds side opening 9
Strong layer 17, internal layer 18, bracing wire chamber 19, center cavity 20, handle pullover 21, handle driver plate 22, anchorage shoe 23, dampened disk
24, bolt 25, handle upper cover 26, bezel cover 27, damped ring 28, handle lower cover 29, locking nut 30, spiral organ 31, shell 32, steel
Pipe 33, sleeve 34, guide pad 35, screw rod 36, damping ring 37, anchor tip 38.
Specific embodiment
The invention discloses a kind of guiding catheters, can be according to the curved of personalized physiological anatomic architecture adjustment guiding catheter
Curved shape, so as to improve the applicability of guiding catheter.
Following will be combined with the drawings in the embodiments of the present invention, and technical solution in the embodiment of the present invention carries out clear, complete
Site preparation description, it is clear that described embodiments are only a part of the embodiments of the present invention, instead of all the embodiments.It is based on
Embodiment in the present invention, it is obtained by those of ordinary skill in the art without making creative efforts every other
Embodiment shall fall within the protection scope of the present invention.
Fig. 1 is please referred to Figure 18, wherein the dotted line in Fig. 1 and Fig. 2 indicates signal when curved segment being adjusted to be in bending state
Figure.
In this embodiment, guiding catheter includes head end, tail end and the main body for connecting head end and tail end
Portion 4, guiding catheter have catheter lumen, further includes: and curved segment 3 is adjusted, the first end of curved segment 3 is adjusted to be connected with head end, the of tune curved segment 3
Two ends are connected with the end of main part 4 towards head end；The center cavity 20 of curved segment 3 is adjusted to be connected with the catheter lumen of guiding catheter；
Adjust curved component, bending adjustment includes bracing wire 5 and handle 7, one end of bracing wire 5 through main part 4 and adjust curved segment 3 and with tune curved segment 3
First end be connected, the other end of bracing wire 5 draws via the tail end of guiding catheter and is connected with handle 7, and handle 7 can
Adjustment bracing wire 5 is placed in main part 4 and adjusts the length in curved segment 3.
So set, can be drawn by changing according to the physiological structure of patient by operation handle 7 when being performed the operation
Line 5 is placed in the length in guiding catheter (predominantly main part 4 and tune curved segment 3), and lowering curved segment 3 in the drive of bracing wire 5 can occur
Bending, during adjusting curved segment 3 to bend, the head end 1 that will drive guiding catheter is moved, so as to adjust guiding catheter
Head end 1 angle so that the head end 1 of guiding catheter protrudes into lesion locations such as coronary artery, so as to lesion locations especially
It is the instruments such as right coronary artery transfer gantry, seal wire or sacculus, compared with prior art, adjusts curved segment 3 due to directly utilizing bracing wire 5 to change
Bending angle, so as to adjusted according to the physiological structure of patient guiding catheter head end 1 angle so that guiding catheter
Head end 1 protrudes into lesion locations, the applicability of guiding catheter can be improved, and due to not needing replacement guiding in the course of surgery
Conduit can reduce operating difficulty, reduce the time required for performing the operation, and improve the safety of intervention operation.
It should be noted that in this embodiment, guiding catheter is tubular structure, length be 400mm~
1600mm, internal diameter be 0.4mm~5.0mm, outer diameter be 1.2mm~7mm, wherein the length of the head end 1 of guiding catheter be 2mm~
30mm, adjusting the length of curved segment 3 is 10mm~200mm.Wherein, the head end 1 of guiding catheter is flexible plastic head end or guiding catheter
Head end 1 include flexible plastic head end and plastic flexible pipe section, one end of plastic flexible pipe section is connected with flexible plastic head end, separately
One end is connected with the first end of curved segment 3 is adjusted, and wherein plastic flexible pipe section includes development indicating and enhancement layer.Those skilled in the art
It can clearly learn flexible plastic and plastic flexible pipe are made of which kind of material according to knowhow and specific service condition
And plastics the specific value of pliability.
It should also be noted that, adjusting the complete phase of structure snd size of the center cavity 20 of curved segment 3 and the catheter lumen of guiding catheter
Together, and center cavity 20 and catheter lumen align, and thereby may be ensured that the continuity of cavity.In this embodiment, conduit
Chamber and center cavity 20 are that the cross section of cylindrical cavity, that is, catheter lumen cross section and center cavity 20 is circular cross section, and surface is smooth,
Facilitate the instruments such as delivery guidewire, sacculus and support as shown in Figure 10 and Figure 11, certainly, is also not excluded for such as leading using other shapes
Lumen and center cavity 20 are special-shaped cavity, i.e. the cross section of catheter lumen and the cross section of center cavity is non-circular cross sections, are such as schemed
Shown in 12 and Figure 13, center cavity and catheter lumen be not exclusively circular cavity (edge line of cavity includes circular arc line and straight line,
Circular arc line and straight line are interconnected to form the edge line of cavity).Under same catheter outer diameter, such structure can be such that conduit does
To the big chamber of thin-walled, it can be used for conveying multiple brackets and seal wire etc. simultaneously, it is of course also possible to be used according to actual service condition
The cavity of other shapes.
It should be further noted that in this embodiment, the main part 4 of guiding catheter be straight body portion or
It is the main part with certain bending angle, main part that main part 4, which is shaped by preformed in bending, that is, main part 4 of certain shapes,
The shape of 4 bending and curved angle etc. can be set according to actual service condition, enable main part 4
Special human anatomic structure is adapted to, the usability of guiding catheter is improved.
It should be further noted that in this embodiment, adjusting curved segment 3 for 1 phase of head end with guiding catheter
The end of connection is the first end for adjusting curved segment, and the end for adjusting curved segment to be used to be connected with main part 4 is the second end for adjusting curved segment, right
The name of two ends of curved segment is adjusted only to facilitate being described, certainly, is also not excluded for using other naming methods, it is right
Adjust the anomia of two ends of curved segment as the foundation for limiting protection scope.
In addition, by adjusting the length of bracing wire 5, it can enable and curved segment 3 is adjusted to be conditioned bending angle greater than 0 ° and not
Greater than 270 °, when bracing wire 5 in the raw when, adjust the main part 4 of curved segment 3 and guiding catheter to be located at same horizontal line, work as drawing
When straining at line 5, curved segment 3 is adjusted to bend therewith, adjusts the angle between the axis of curved segment 3 and the axis of main part 4 as to adjust curved
The bending angle of section 3.
In further embodiment, adjusts curved segment 3 and main part 4 includes the internal layer 18 for being surrounded on the setting of center cavity 20, surround
In the enhancement layer 17 that internal layer 18 is arranged and the outer layer 16 for being surrounded on the setting of enhancement layer 17, curved segment 3 and main part 4 is adjusted to be provided with drawing
Line chamber 19, bracing wire chamber 19 are set between enhancement layer 17 and internal layer 18, and the end of bracing wire chamber 19 towards head end is provided with anchor ring 2,
Bracing wire 5 is fixedly connected through bracing wire chamber 19 and with 2 phase of anchor ring.So set, bracing wire chamber 19 is embedded in enhancement layer 17 and internal layer 18
Between, so that the bracing wire 5 of stress will not rack outer layer 16.
It should be noted that in this embodiment, outer layer 16 uses macromolecule polymer material such as block polyamides
Amine, nylon or polyurethane are made；Enhancement layer 17 is that stainless steel wire, tungsten wire, cochrome silk, titanium alloy wire or nitinol alloy wire are compiled
Knitmesh, string diameter are 0.02mm to 0.1mm, and density is 30PPI to 100PPI (per inch mesh number), and woven wire cloth makes conduit
With excellent fracture resistance and turn round control performance；Internal layer 18 uses polytetrafluoroethylene (PTFE), has the characteristics that coefficient of friction is small, so that leading
Tube cavity is smooth, other instruments or conduit is facilitated to convey.
It should also be noted that, anchor ring 2 passes through what is be bonded or welded using stainless steel, Nitinol or platinumiridio ring
Mode is fixedly connected with bracing wire 5 with 2 phase of anchor ring, and wherein bracing wire 5 can be using round or flat-shaped stainless steel wire or NiTi
Alloy wire.
It should be further noted that in this embodiment, when the head end 1 of guiding catheter includes flexible plastic head
End and with development indicating and enhancement layer plastic flexible pipe section when, anchor ring 2 and the enhancement layer of plastic flexible pipe section are an integral structure,
If the enhancement layer of plastic flexible pipe section is a metal tube, front end forms the end for being similar to spring by being cut by laser, spring
Clearing end is then used as anchor ring to use.Certainly, it is also not excluded for using other set-up modes, moulding or life such as is being carried out to enhancement layer
When production, directly anchor ring and enhancement layer injection molding are integrated, so that anchor ring and enhancement layer form the structure of integral type.
It needs to further explain, in this embodiment, bracing wire chamber 19 is not limited to flat chamber, can be circle
Chamber or oval chamber, equally, bracing wire 5 can be the wire of flat filament, circle silk or ellipse.
It also needs to further explain, in this embodiment, is set to the bracing wire chamber for adjusting curved segment 3 and setting
It is connected in the bracing wire chamber of main part 4 logical, shape, size of two bracing wire chambers etc. are all the same, the center line of two bracing wire chambers
It coincides, i.e., bracing wire chamber 19 is arranged along tune curved segment 3 and main part 4, the extending direction and tune curved segment 3 and main body of bracing wire chamber 19
The extending direction in portion 4 is consistent.
In further embodiment, for the ease of observation, set in the head end 1 of the enhancement layer 17 or guiding catheter of adjusting curved segment 3
Development indicating is set, wherein the material of development indicating uses the high molecular material of cricoid platinumiridio, platinum, gold, tantalum, tungsten, tungstenic
Or the high molecular material containing Bi2O3, convenient for the position of observation guiding catheter and curved segment 3 so can be adjusted in the course of surgery
Angle.
In addition, in this embodiment, being adjusted to guarantee to adjust curved segment 3 that can bend under the drive of bracing wire 5
Curved segment 3 is that (adjusting curved segment 3 to be easy in the drive of bracing wire 5, deformation occurs along active force, when bracing wire 5 is applied for soft tune curved segment
After the active force that adds disappears, state when adjusting curved segment 3 that can restore to non-stress) or adjust the hardness of curved segment 3 along adjusting curved segment
First end is incremented by step by step to second end.It can so guarantee to adjust curved segment that can bend under the action of bracing wire 5, and can be with
Guarantee to adjust the pliability of curved segment 3 to be greater than the main part 4 of guiding catheter, so that it is good to guarantee that the main part 4 of guiding catheter has
Support force, consequently facilitating the instruments such as transport support.
In further scheme, the main part 4 of guiding catheter is additionally provided at least one side opening 9, side opening 9 and conduit
Chamber is connected.In this way, side opening 9 can connecting tube chamber and human vas, allow blood from side opening 9 circulate, prevent from leading
Pipe is completely blocked blood vessel, to further decrease operation risk.In this embodiment, main part 4 preferably has
There is the main part of side opening 9, certainly, is also not excluded for selecting the main part for not offering side opening according to actual service condition.
In addition to this, curved segment 3 and main part 4 is adjusted to be provided at least one bracing wire chamber 19, it below will be with one drawing of setting
The other structures of guiding catheter are illustrated for two bracing wire chambers 19 of line chamber 19 and setting.
Embodiment one
The enhancement layer 17 of the enhancement layer 17 and main part 4 of adjusting curved segment 3 is respectively provided with there are two bracing wire chamber 19, as shown in Figure 10,
Two 19 axial symmetry of bracing wire chamber distributions.Handle includes handle pullover 21,22, two anchorage shoes 23 of handle driver plate, damping
Disk 24, handle upper cover 26, bezel cover 27, damped ring 28 and handle lower cover 29, in which: handle driver plate 22 is set in handle upper cover 26
On boss, the tool of handle driver plate 22 can make there are two regulating part and by stirring any regulating part handle driver plate 22 along
The center of boss rotates；Annular groove is offered on the excircle of handle driver plate 22, damped ring 28 is embedded in annular groove；Dampened disk 24 with
Handle driver plate 22 abuts against and dampened disk 24 and the boss of handle upper cover 26 fit, and fastener is on dampened disk 24, handle
The boss of lid 26 is simultaneously fixedly connected with 27 phase of bezel cover.
Two anchorage shoes 23 are all set in handle driver plate 22, positioned at two bracing wire chambers 19 bracing wire 5 respectively with
Corresponding anchorage shoe 23 be connected, bracing wire 5 passes through the fixed device of the groove connecting stay wire of 22 outer rim of handle driver plate
23, rotation regulating part makes the rotation of handle driver plate 22 that corresponding bracing wire 5 can be driven to be tensioned and loosen, and regulating part can control hand
The rotation angle of handle driver plate 22 realizes that distal end of catheter bending is controllable so as to control the bending degree of bending section 3.
In order to reduce the damage to the tail end of guiding catheter, in this embodiment, the tail end of guiding catheter with answer
Become relief sleeve 6 to be connected；It further include the pipe joint 8 for being exposed to handle end, pipe joint 8 and strain relief casing 6 are embedding
Enter in the card slot between handle upper cover 26 and the handle lower cover 29 and strain relief casing 6 runs through positioned at the convex of handle upper cover 26
The groove at platform center, it is ensured that strain relief casing 6 will not occur bending and strain relief casing 6 will not to handle other
Structure interferes.
In the present embodiment, in order to guarantee the stability connected, there are two installations for the round boss setting of handle upper cover 26
Hole, is embedded with that corresponding nut, fastener are specifically bolt 25 one by one with mounting hole in bezel cover 27, and bolt 25 is through damping
Disk 24 and mounting hole are simultaneously fastened and connected with nut, so can effectively prevent dampened disk 24 and bezel cover 27 rotates.Together
When, by setting damped ring 28, the damping between handle driver plate 22 and dampened disk 24 can be increased, it, can by screwing bolts 25
So that dampened disk 24 is mutually clamped with damped ring 28, and then can guarantee between handle driver plate 22 and the boss of handle upper cover 26
It is fastened and connected.Also, by elastic, the compression damping circle 28 for adjusting bolt 25, adjustable handle driver plate 22 and upper cover 26
On round boss and dampened disk 24 friction, prevent guiding catheter bending section during curved, guiding-tube bend section because
Stress and the rebound of itself cause bracing wire 5 to be slided.
In addition, in this embodiment, guiding catheter further includes curved in order to further increase the applicability of guiding catheter
Shape adjuster, bending adjuster include wrapping wire 10, core filaments 11 and filament guiding seat 12, and wrapping wire 10 is set to the head end of bending adjuster.
For the ease of installation bending adjuster, needing that Y shape valve 15 is installed in pipe joint 8, Y shape valve 15 is connected with pipe joint 8,
Core filaments 11 can through Y shape valve 15, pipe joint 8, the catheter lumen of guiding catheter and bending section center cavity 20.Wrapping wire 10 is
The soft soft head of metal spring or plastics, can be avoided scratches internal layer 18 when interspersed bending adjuster enters cavity.Core filaments
11 be the bending wire with support force to a certain degree, is able to cooperate handle and makes that curved segment 3 is adjusted to be bent certain angle, so that leading
The head end 1 of guiding tube is in certain special bending to adapt to human anatomic structure.Filament guiding seat 12 has instruction bending and locking function
Can, the bending of bending adjuster can be made consistent with the bending direction of curved segment 3 is adjusted, and lock with the Y shape valve 15 of cooperation, prevent core
Silk 11 slides.
Bending adjuster is inserted into curved for linear tune under natural conditions via Y shape valve 15, catheter lumen and center cavity 20
When section 3, so that adjusting curved segment 3 that a degree of bending deformation, the bending direction of bending adjuster and the bending side for adjusting curved segment 3 occurs
To should be at same plane (i.e. the bending angle of bending adjuster with adjust the bending angle of curved segment 3 it is identical).Filament guiding seat 12 can be with
It is locked with the connector of Y shape valve 15, to prevent bending adjuster from skidding off.Wrapping wire 10 is 0mm~10.0mm at a distance from anchor ring 2,
The head end 1 of guiding catheter is in nature linear state.As shown in figure 8, working as operation handle, when tensing accordingly or loosening bracing wire 5, match
It closes bending adjuster to use, can make to adjust curved segment 3 that deformation occurs, conduit can be made in certain special bending, and to adapt to certain special
Human anatomic structure, be inserted into coronary artery convenient for guiding catheter, being really achieved doctor, can to regulate and control guiding catheter distal end signified
To position, different diseased regions can be entered with same root guiding catheter, so as to shorten operating time, mitigate patient's pain
It is bitter.
Other than bending adjuster, guiding catheter can also be used in combination with expander.Expander mainly cooperates master
Body portion 4 be straight body portion guiding catheter come using.The effect of expander is that the effect of expander is cooperation adjustable bending guiding
Conduit is inserted directly into human vas, realizes and is inserted into without sheath, reduces wound size and the damage to blood vessel.
Expander includes the connector 14 of expander and the expansion pipe 13 with cone cell head end.Wherein expansion pipe 13 is using tool
There are macromolecule polymer material such as block polyamide, polyethylene, nylon or the polyurethane of certain degree of hardness to be made.The length of expander
For 400mm~1600mm, diameter is 1.3mm~2.0mm.Wherein expansion pipe 13 is single lumen catheter, while the head end for expanding pipe 13 is
Cone cell head end is to expand the head end of pipe 13 in coniform, and the taper of cone cell head end is set according to actual service condition, such as
This is conducive to that guiding catheter is cooperated to pass through diseased region using cone cell head end, reduces insertion process resistance and wound；Expander
Connector 14 has locking function, it is ensured that the connector of filament guiding seat 12 and Y shape valve 15 is locked, and adjusts curved component to skid off to prevent.
The distance that conduit head end 1 is stretched out at the tip of expander is 1mm~50.0mm, expands the head end of pipe 13 and guiding catheter
1 pipe shaft interference fit, so that guiding catheter and expander cooperate close gapless, insertion process is more smoothly.
It should be noted that in this embodiment, for the ease of installation, need to be arranged Y shape valve, Y shape valve 15 with
Pipe joint 8 is connected, and bending adjuster and expander pass through Y shape valve 15 and protrude into guiding catheter, certainly, is also not excluded for adopting
With other connection valves such as female Luer or directly bending adjuster and expander are protruded into guiding catheter.
It should also be noted that, in this embodiment, wrapping wire 10 is 0mm to 10.0mm at a distance from anchor ring 2,
Certainly, it is also not excluded for using other set-up modes.
Embodiment two
In the present embodiment, curved segment 3 and main part 4 is adjusted to be provided with a bracing wire chamber 19, as shown in figure 11, handle includes shell
Body 32, spiral organ 31 and the guide pad 35 being all set in inside shell 32, screw rod 36 and steel pipe 33, in which:
The end of thread of screw rod 36 is attached with spiral organ 31 by being threadedly engaged, the fixing end and guiding of screw rod 36
35 phase of block is fixedly connected, and specifically, screw rod 36 is the moving member of handle, and the end of thread has external screw thread, can be with spiral organ 31
On internal screw thread match, the two cooperation thread pitch it is larger, can quickly generate relative movement.The rear end of screw rod 36 is
Flat structure can effectively prevent screw rod 36 from rotating in guide pad 35；Bracing wire 5 is through steel pipe 33 and leads to
The grooving for crossing steel pipe 33 is mutually fixedly connected with the rear end of screw rod 36；The front end of steel pipe 33 is fixedly connected with 38 phase of anchor tip,
The rear end of steel pipe 33 is fixedly connected with 35 phase of guide pad, and steel pipe 33 runs through screw rod 36；In order to avoid the tail end of guiding catheter is sent out
Raw damage, the tail end of guiding catheter are connected with strain relief casing 6, and strain relief casing 6 is sheathed in steel pipe 33 and answers
Two ends for becoming relief sleeve 6 are both exposed to the end of handle, and strain relief casing 6 is exposed to the end of spiral organ 31 and leads
It is connected to the tail end of conduit, the other end of strain relief casing 6 is then used as pipe joint 8 or pipe joint 8 and strain relief
Casing 6 is connected；Guide pad 35 then by the screw hole on shell 32, is screwed guide pad 35 and shell 32, to be formed
The support combinations of shell 32, steel pipe 33, guide pad 35, anchor tip 38.
Turn spiral organ 31, by the reaction force of screw thread, screw rod 36 does axial shifting along steel pipe 33 and guide pad 35
Dynamic, the guide pad 35 in handle can also control the stroke of screw rod 36 in addition to playing the guiding role, when screw rod 36 moves to
When its range, it can be abutted against with guide pad 35, so that guide pad 35 also acts as the effect of limit.Sleeve 34 by with conduit
Connector 8 is fixed, and shell 32 can be facilitated to connect spiral organ 31 from handle rear end.
Wherein, the shape of spiral organ 31 is cylindric, forms outside one by machining or injection molding on excircle
The protrusion in week, while there is anti-skidding processing on surface, rotation when doctor being facilitated to operate.Before anchor tip 38 is embedded in spiral organ 31
End prevents spiral organ 31 from the relative movement in radial and axial direction occurs together, can only do along handle center with shell 32
The relative rotation of axial direction.It is provided with an annular groove on the excircle of anchor tip 38, for being embedded in damping ring 37, increases
Add the damping between spiral organ 31 and anchor tip 38 and support force, during preventing guiding catheter curved, spiral organ 31 can
The revolution that can occur.By rotation locking nut 30, the front end of anchor tip 38 can be made to deform, adjust the size of its inner cavity,
To realize the fixation of guiding catheter Yu anchor tip 38, achieve the purpose that conduit itself is fixed with handle.
By the spiral organ 31 in rotating handle, screw rod 36 is mobile to handle rear end, sends out the bracing wire 5 being fixed thereon
Raw movement, changes the length for being located at and adjusting in curved segment 3 and main part 4, to achieve the purpose that control adjusts curved segment 3 to deform.Control is dialled
The rotation angle of spiral organ 31 can accurately control the bending degree for adjusting curved segment 3, realize that distal end of catheter bending is controllable.Spiral organ 31
Screw thread between screw rod 36 has self-locking function, it can be ensured that when distal end of catheter deformation or stress condition sudden change,
Bending will not change.
It should be noted that in example 1, bending adjuster and expander are that there are two bracing wire chambers 19 with tool
Guiding catheter is used in combination, and certainly, is also not excluded for bending adjuster or expander and the guiding catheter with a bracing wire chamber
It is used in combination, specific set-up mode is similar with description above, and details are not described herein.
Each embodiment in this specification is described in a progressive manner, the highlights of each of the examples are with other
The difference of embodiment, the same or similar parts in each embodiment may refer to each other.
The foregoing description of the disclosed embodiments enables those skilled in the art to implement or use the present invention.
Various modifications to these embodiments will be readily apparent to those skilled in the art, as defined herein
General Principle can be realized in other embodiments without departing from the spirit or scope of the present invention.Therefore, of the invention
It is not intended to be limited to the embodiments shown herein, and is to fit to and the principles and novel features disclosed herein phase one
The widest scope of cause.
Claims (12)
- It is described to lead including head end, tail end and main part for connecting the head end and the tail end 1. a kind of guiding catheter Guiding tube has catheter lumen, which is characterized in that the guiding catheter can be used in being inserted into coronary artery, the guiding catheter further include:Curved segment is adjusted, the first end for adjusting curved segment is connected with the head end, the second end for adjusting curved segment and the main part It is connected towards the end of the head end of the guiding catheter；The center cavity for adjusting curved segment is connected with the catheter lumen；Adjust curved component, including handle, one end of bracing wire is through the main part and described adjust curved segment and adjusts the of curved segment with described One end is connected, and the other end of the bracing wire draws via the tail end of the guiding catheter and is connected with the handle, described Handle can adjust the bracing wire be placed in the main part and it is described adjust curved segment in length, the bracing wire be flat filament, circle silk or The wire of ellipse；The main part and the tune curved segment include internal layer, the ring for being surrounded on the catheter lumen and center cavity setting respectively It is around in the enhancement layer of the internal layer setting and is surrounded on the outer layer of the enhancement layer setting, the tune curved segment and the main part are also It is provided with bracing wire chamber, the bracing wire chamber is set between the enhancement layer and the internal layer, and the bracing wire chamber is towards the head The end at end is provided with anchor ring, and the bracing wire is mutually fixedly connected through the bracing wire chamber and with the anchor ring；One or two described bracing wire chamber is provided between the enhancement layer and the internal layer；When being provided with a bracing wire chamber between the enhancement layer and the internal layer, the handle includes shell, spiral organ With the guide pad, screw rod and steel pipe for being all set in the enclosure interior, in which:The end of thread of the screw rod is attached with the spiral organ by being threadedly engaged, the fixing end of the screw rod and institute Guide pad is stated mutually to be fixedly connected；The bracing wire is through the steel pipe and passes through the fixing end of the grooving of the steel pipe and the screw rod mutually fixation company It connects；The front end of the steel pipe is mutually fixedly connected with anchor tip, and the rear end of the steel pipe is mutually fixedly connected with the guide pad, The steel pipe runs through the screw rod；The guide pad is mutually fixedly connected with the shell；When there are two when the bracing wire chamber, the handle includes handle pullover, hand for setting between the enhancement layer and the internal layer Handle driver plate, two anchorage shoes, dampened disk, handle upper cover, bezel cover, damped ring and handle lower cover, in which:The handle driver plate is set on the boss of the handle upper cover, and the handle driver plate can be along in the boss Heart rotation；Annular groove is offered on the excircle of the handle driver plate, the damped ring is embedded in the annular groove, and the handle is dialled There are two the regulating parts for stirring the handle driver plate rotation for disk tool；The dampened disk is abutted against with the handle driver plate and the dampened disk and the boss of the handle upper cover fit, and tight Firmware is mutually fixedly connected through the dampened disk, the boss of handle upper cover and with the bezel cover；Two anchorage shoes are all set in the handle driver plate, positioned at the bracing wire difference of two bracing wire chambers It is connected with the corresponding anchorage shoe；The tail end of the guiding catheter is connected with strain relief casing；It further include being exposed to the conduit of the handle end to connect Head, the pipe joint and the strain relief casing are embedded in the card slot between the handle upper cover and the handle lower cover.
- 2. guiding catheter as described in claim 1, which is characterized in that each bracing wire chamber is provided with the anchor ring, often A anchor ring has the corresponding bracing wire to be mutually fixedly connected therewith, and the handle is placed in for adjusting every bracing wire The intracavitary length of the bracing wire.
- 3. guiding catheter as claimed in claim 2, which is characterized in that the cross of the cross section of the catheter lumen and the center cavity Section is circular cross section or the catheter lumen cross section and the cross section of the center cavity is non-circular cross sections.
- 4. guiding catheter as described in claim 1, which is characterized in that the main part is straight body portion or the main part For bending main part.
- 5. guiding catheter as described in claim 1, which is characterized in that the head end of the guiding catheter is plastics head end or described The head end of guiding catheter includes that flexible plastic head end and one end are connected with the flexible plastic head end, and the other end and the tune are curved The plastic flexible pipe section that the first end of section is connected, the plastic flexible pipe section include development indicating and enhancement layer.
- 6. guiding catheter as claimed in claim 5, which is characterized in that the anchor ring and the enhancement layer of the plastic flexible pipe section are Integral type setting.
- 7. such as guiding catheter as claimed in any one of claims 1 to 6, which is characterized in that the tune curved segment can be conditioned bending Angle is greater than 0 ° and is not more than 270 °.
- 8. guiding catheter as claimed in claim 7, which is characterized in that the tune curved segment is soft tune curved segment or the tune curved segment Hardness along it is described adjust curved segment first end to it is described adjust curved segment second end be incremented by step by step.
- 9. guiding catheter as claimed in claim 7, which is characterized in that the guiding catheter further includes bending adjuster, described Bending adjuster includes wrapping wire, core filaments and filament guiding seat, and the wrapping wire is set to the head end of the bending adjuster, the core filaments energy Enough through the catheter lumen of the guiding catheter and the center cavity for adjusting curved segment.
- 10. guiding catheter as claimed in claim 9, which is characterized in that the wrapping wire is metal spring or plastic material wrapping wire； The core filaments are bending wire.
- 11. guiding catheter as claimed in claim 7, which is characterized in that the guiding catheter further includes expander, the expansion Device includes the connector of expansion pipe and expander, and the expansion pipe protrudes into the catheter lumen and the tune curved segment of the guiding catheter In the chambers of the heart and the head end of the expansion pipe can run through the head end of the guiding catheter and be exposed to the guiding catheter The outside of head end.
- 12. guiding catheter as described in claim 1, which is characterized in that the main part of the guiding catheter is additionally provided with At least one side opening, the side opening are connected with the catheter lumen.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510461299.5A CN104958824B (en) | 2015-07-30 | 2015-07-30 | A kind of guiding catheter |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510461299.5A CN104958824B (en) | 2015-07-30 | 2015-07-30 | A kind of guiding catheter |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN104958824A CN104958824A (en) | 2015-10-07 |
| CN104958824B true CN104958824B (en) | 2018-12-21 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN201510461299.5A Active CN104958824B (en) | 2015-07-30 | 2015-07-30 | A kind of guiding catheter |
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| CN (1) | CN104958824B (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
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| US11786705B2 (en) | 2016-10-24 | 2023-10-17 | St. Jude Medical, Cardiology Division, Inc. | Catheter insertion devices |
| US11813410B2 (en) | 2017-11-28 | 2023-11-14 | St. Jude Medical, Cardiology Division, Inc. | Controllable expandable catheter |
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| US11786705B2 (en) | 2016-10-24 | 2023-10-17 | St. Jude Medical, Cardiology Division, Inc. | Catheter insertion devices |
| US11813410B2 (en) | 2017-11-28 | 2023-11-14 | St. Jude Medical, Cardiology Division, Inc. | Controllable expandable catheter |
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| CN104958824A (en) | 2015-10-07 |
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